From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- gfx/harfbuzz/AUTHORS | 14 + gfx/harfbuzz/COPYING | 42 + gfx/harfbuzz/Makefile.am | 82 + gfx/harfbuzz/NEWS | 3277 ++++++++++++ gfx/harfbuzz/README.md | 99 + gfx/harfbuzz/THANKS | 7 + gfx/harfbuzz/autogen.sh | 48 + gfx/harfbuzz/configure.ac | 486 ++ gfx/harfbuzz/git.mk | 401 ++ gfx/harfbuzz/harfbuzz.doap | 24 + gfx/harfbuzz/moz.yaml | 72 + gfx/harfbuzz/src/ArabicPUASimplified.txt | 250 + gfx/harfbuzz/src/ArabicPUATraditional.txt | 295 + gfx/harfbuzz/src/Makefile.am | 594 +++ gfx/harfbuzz/src/Makefile.sources | 405 ++ gfx/harfbuzz/src/OT/Color/CBDT/CBDT.hh | 1030 ++++ gfx/harfbuzz/src/OT/Color/COLR/COLR.hh | 2436 +++++++++ gfx/harfbuzz/src/OT/Color/COLR/colrv1-closure.hh | 107 + gfx/harfbuzz/src/OT/Color/CPAL/CPAL.hh | 350 ++ gfx/harfbuzz/src/OT/Color/sbix/sbix.hh | 452 ++ gfx/harfbuzz/src/OT/Color/svg/svg.hh | 151 + gfx/harfbuzz/src/OT/Layout/Common/Coverage.hh | 348 ++ .../src/OT/Layout/Common/CoverageFormat1.hh | 133 + 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gfx/harfbuzz/src/hb-ot-name-language.hh create mode 100644 gfx/harfbuzz/src/hb-ot-name-table.hh create mode 100644 gfx/harfbuzz/src/hb-ot-name.cc create mode 100644 gfx/harfbuzz/src/hb-ot-name.h create mode 100644 gfx/harfbuzz/src/hb-ot-os2-table.hh create mode 100644 gfx/harfbuzz/src/hb-ot-os2-unicode-ranges.hh create mode 100644 gfx/harfbuzz/src/hb-ot-post-macroman.hh create mode 100644 gfx/harfbuzz/src/hb-ot-post-table-v2subset.hh create mode 100644 gfx/harfbuzz/src/hb-ot-post-table.hh create mode 100644 gfx/harfbuzz/src/hb-ot-shape-fallback.cc create mode 100644 gfx/harfbuzz/src/hb-ot-shape-fallback.hh create mode 100644 gfx/harfbuzz/src/hb-ot-shape-normalize.cc create mode 100644 gfx/harfbuzz/src/hb-ot-shape-normalize.hh create mode 100644 gfx/harfbuzz/src/hb-ot-shape.cc create mode 100644 gfx/harfbuzz/src/hb-ot-shape.h create mode 100644 gfx/harfbuzz/src/hb-ot-shape.hh create mode 100644 gfx/harfbuzz/src/hb-ot-shaper-arabic-fallback.hh create mode 100644 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gfx/harfbuzz/src/hb-string-array.hh create mode 100644 gfx/harfbuzz/src/hb-style.cc create mode 100644 gfx/harfbuzz/src/hb-style.h create mode 100644 gfx/harfbuzz/src/hb-subset-accelerator.hh create mode 100644 gfx/harfbuzz/src/hb-subset-cff-common.cc create mode 100644 gfx/harfbuzz/src/hb-subset-cff-common.hh create mode 100644 gfx/harfbuzz/src/hb-subset-cff1.cc create mode 100644 gfx/harfbuzz/src/hb-subset-cff1.hh create mode 100644 gfx/harfbuzz/src/hb-subset-cff2.cc create mode 100644 gfx/harfbuzz/src/hb-subset-cff2.hh create mode 100644 gfx/harfbuzz/src/hb-subset-input.cc create mode 100644 gfx/harfbuzz/src/hb-subset-input.hh create mode 100644 gfx/harfbuzz/src/hb-subset-instancer-solver.cc create mode 100644 gfx/harfbuzz/src/hb-subset-plan-member-list.hh create mode 100644 gfx/harfbuzz/src/hb-subset-plan.cc create mode 100644 gfx/harfbuzz/src/hb-subset-plan.hh create mode 100644 gfx/harfbuzz/src/hb-subset-repacker.cc create mode 100644 gfx/harfbuzz/src/hb-subset-repacker.h create mode 100644 gfx/harfbuzz/src/hb-subset.cc create mode 100644 gfx/harfbuzz/src/hb-subset.h create mode 100644 gfx/harfbuzz/src/hb-subset.hh create mode 100644 gfx/harfbuzz/src/hb-ucd-table.hh create mode 100644 gfx/harfbuzz/src/hb-ucd.cc create mode 100644 gfx/harfbuzz/src/hb-unicode-emoji-table.hh create mode 100644 gfx/harfbuzz/src/hb-unicode.cc create mode 100644 gfx/harfbuzz/src/hb-unicode.h create mode 100644 gfx/harfbuzz/src/hb-unicode.hh create mode 100644 gfx/harfbuzz/src/hb-uniscribe.cc create mode 100644 gfx/harfbuzz/src/hb-uniscribe.h create mode 100644 gfx/harfbuzz/src/hb-utf.hh create mode 100644 gfx/harfbuzz/src/hb-vector.hh create mode 100644 gfx/harfbuzz/src/hb-version.h create mode 100644 gfx/harfbuzz/src/hb-version.h.in create mode 100644 gfx/harfbuzz/src/hb.h create mode 100644 gfx/harfbuzz/src/hb.hh create mode 100644 gfx/harfbuzz/src/justify.py create mode 100644 gfx/harfbuzz/src/main.cc create mode 100644 gfx/harfbuzz/src/meson.build create mode 100644 gfx/harfbuzz/src/moz.build create mode 100644 gfx/harfbuzz/src/ms-use/COPYING create mode 100644 gfx/harfbuzz/src/ms-use/IndicPositionalCategory-Additional.txt create mode 100644 gfx/harfbuzz/src/ms-use/IndicShapingInvalidCluster.txt create mode 100644 gfx/harfbuzz/src/ms-use/IndicSyllabicCategory-Additional.txt create mode 100755 gfx/harfbuzz/src/sample.py create mode 100755 gfx/harfbuzz/src/update-unicode-tables.make (limited to 'gfx/harfbuzz') diff --git a/gfx/harfbuzz/AUTHORS b/gfx/harfbuzz/AUTHORS new file mode 100644 index 0000000000..83c0c66f99 --- /dev/null +++ b/gfx/harfbuzz/AUTHORS @@ -0,0 +1,14 @@ +Behdad Esfahbod +David Corbett +David Turner +Ebrahim Byagowi +Garret Rieger +Jonathan Kew +Khaled Hosny +Lars Knoll +Martin Hosken +Owen Taylor +Roderick Sheeter +Roozbeh Pournader +Simon Hausmann +Werner Lemberg diff --git a/gfx/harfbuzz/COPYING b/gfx/harfbuzz/COPYING new file mode 100644 index 0000000000..1dd917e9f2 --- /dev/null +++ b/gfx/harfbuzz/COPYING @@ -0,0 +1,42 @@ +HarfBuzz is licensed under the so-called "Old MIT" license. Details follow. +For parts of HarfBuzz that are licensed under different licenses see individual +files names COPYING in subdirectories where applicable. + +Copyright © 2010-2022 Google, Inc. +Copyright © 2015-2020 Ebrahim Byagowi +Copyright © 2019,2020 Facebook, Inc. +Copyright © 2012,2015 Mozilla Foundation +Copyright © 2011 Codethink Limited +Copyright © 2008,2010 Nokia Corporation and/or its subsidiary(-ies) +Copyright © 2009 Keith Stribley +Copyright © 2011 Martin Hosken and SIL International +Copyright © 2007 Chris Wilson +Copyright © 2005,2006,2020,2021,2022,2023 Behdad Esfahbod +Copyright © 2004,2007,2008,2009,2010,2013,2021,2022,2023 Red Hat, Inc. +Copyright © 1998-2005 David Turner and Werner Lemberg +Copyright © 2016 Igalia S.L. +Copyright © 2022 Matthias Clasen +Copyright © 2018,2021 Khaled Hosny +Copyright © 2018,2019,2020 Adobe, Inc +Copyright © 2013-2015 Alexei Podtelezhnikov + +For full copyright notices consult the individual files in the package. + + +Permission is hereby granted, without written agreement and without +license or royalty fees, to use, copy, modify, and distribute this +software and its documentation for any purpose, provided that the +above copyright notice and the following two paragraphs appear in +all copies of this software. + +IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR +DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES +ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN +IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGE. + +THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS +ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO +PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. diff --git a/gfx/harfbuzz/Makefile.am b/gfx/harfbuzz/Makefile.am new file mode 100644 index 0000000000..c14b4b7c20 --- /dev/null +++ b/gfx/harfbuzz/Makefile.am @@ -0,0 +1,82 @@ +# Process this file with automake to produce Makefile.in + +NULL = + +ACLOCAL_AMFLAGS = -I m4 + +SUBDIRS = src util test perf docs + +EXTRA_DIST = \ + autogen.sh \ + harfbuzz.doap \ + README.md \ + README.python.md \ + BUILD.md \ + CONFIG.md \ + RELEASING.md \ + TESTING.md \ + CMakeLists.txt \ + replace-enum-strings.cmake \ + meson.build \ + meson_options.txt \ + subprojects/cairo.wrap \ + subprojects/freetype2.wrap \ + subprojects/glib.wrap \ + subprojects/google-benchmark.wrap \ + subprojects/ragel.wrap \ + subprojects/packagefiles/ragel/meson.build \ + mingw-configure.sh \ + $(NULL) + +MAINTAINERCLEANFILES = \ + $(GITIGNORE_MAINTAINERCLEANFILES_TOPLEVEL) \ + $(GITIGNORE_MAINTAINERCLEANFILES_M4_LIBTOOL) \ + $(GITIGNORE_MAINTAINERCLEANFILES_MAKEFILE_IN) \ + $(srcdir)/INSTALL \ + $(srcdir)/ChangeLog \ + $(srcdir)/gtk-doc.make \ + $(srcdir)/m4/gtk-doc.m4 \ + $(NULL) + + +# +# ChangeLog generation +# +CHANGELOG_RANGE = +ChangeLog: $(srcdir)/ChangeLog +$(srcdir)/ChangeLog: + $(AM_V_GEN) if test -d "$(top_srcdir)/.git"; then \ + (GIT_DIR=$(top_srcdir)/.git \ + $(GIT) log $(CHANGELOG_RANGE) --stat) > $@.tmp \ + && mv -f $@.tmp "$(srcdir)/ChangeLog" \ + || ($(RM) $@.tmp; \ + echo Failed to generate ChangeLog, your ChangeLog may be outdated >&2; \ + (test -f $@ || echo git-log is required to generate this file >> "$(srcdir)/$@")); \ + else \ + test -f $@ || \ + (echo A git checkout and git-log is required to generate ChangeLog >&2 && \ + echo A git checkout and git-log is required to generate this file >> "$(srcdir)/$@"); \ + fi +.PHONY: ChangeLog $(srcdir)/ChangeLog + + +# +# Release engineering +# + +DISTCHECK_CONFIGURE_FLAGS = \ + --enable-gtk-doc \ + --disable-doc-cross-references \ + --with-gobject \ + --enable-introspection \ + $(NULL) + +# TAR_OPTIONS is not set as env var for 'make dist'. How to fix that? +TAR_OPTIONS = --owner=0 --group=0 + +dist-hook: dist-clear-sticky-bits +# Clean up any sticky bits we may inherit from parent dir +dist-clear-sticky-bits: + chmod -R a-s $(distdir) + +-include $(top_srcdir)/git.mk diff --git a/gfx/harfbuzz/NEWS b/gfx/harfbuzz/NEWS new file mode 100644 index 0000000000..ff35843192 --- /dev/null +++ b/gfx/harfbuzz/NEWS @@ -0,0 +1,3277 @@ +Overview of changes leading to 7.3.0 +Tuesday, May 9, 2023 +==================================== +- Speedup applying glyph variation in VarComposites fonts (over 40% speedup). + (Behdad Esfahbod) +- Speedup instancing some fonts (over 20% speedup in instancing RobotoFlex). + (Behdad Esfahbod) +- Speedup shaping some fonts (over 30% speedup in shaping Roboto). + (Behdad Esfahbod) +- Support subsetting VarComposites and beyond-64k fonts. (Behdad Esfahbod) +- New configuration macro HB_MINIMIZE_MEMORY_USAGE to favor optimizing memory + usage over speed. (Behdad Esfahbod) +- Supporting setting the mapping between old and new glyph indices during + subsetting. (Garret Rieger) +- Various fixes and improvements. + (Behdad Esfahbod, Denis Rochette, Garret Rieger, Han Seung Min, Qunxin Liu) + +- New API: ++hb_subset_input_old_to_new_glyph_mapping() + + +Overview of changes leading to 7.2.0 +Thursday, April 27, 2023 +==================================== +- Add Tifinagh to the list of scripts that can natively be either right-to-left + or left-to-right, to improve handling of its glyph positioning. + (Simon Cozens) +- Return also single substitution from hb_ot_layout_lookup_get_glyph_alternates() + (Behdad Esfahbod) +- Fix 4.2.0 regression in applying across syllables in syllabic scripts. + (Behdad Esfahbod) +- Add flag to avoid glyph substitution closure during subsetting, and the + corresponding “--no-layout-closure” option to “hb-subset” command line tool. + (Garret Rieger) +- Support instancing COLRv1 table. (Qunxin Liu) +- Don’t drop used user-defined name table entries during subsetting. + (Qunxin Liu) +- Optimize handling of “gvar” table. (Behdad Esfahbod) +- Various subsetter bug fixes and improvements. (Garret Rieger, Qunxin Liu) +- Various documentation improvements. (Behdad Esfahbod, Josef Friedrich) + +- New API: ++HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE ++HB_UNICODE_COMBINING_CLASS_CCC132 + +- Deprecated API: ++HB_UNICODE_COMBINING_CLASS_CCC133 + + +Overview of changes leading to 7.1.0 +Friday, March 3, 2023 +==================================== +- New experimental hb_shape_justify() API that uses font variations to expand + or shrink the text to a given advance. (Behdad Esfahbod) +- Various build and bug fixes. (Behdad Esfahbod, Garret Rieger, Qunxin Liu) + +- New API: ++hb_font_set_variation() + + +Overview of changes leading to 7.0.1 +Monday, February 20, 2023 +==================================== +- Various build and bug fixes. + + +Overview of changes leading to 7.0.0 +Saturday, February 11, 2023 +==================================== +- New hb-paint API that is designed mainly to paint “COLRv1” glyphs, but can be + also used as a unified API to paint any of the glyph representations + supported by HarfBuzz (B/W outlines, color layers, or color bitmaps). + (Behdad Esfahbod, Matthias Clasen) +- New hb-cairo API for integrating with cairo graphics library. This is provided + as a separate harfbuzz-cairo library. (Behdad Esfahbod, Matthias Clasen) +- Support for instancing “CFF2” table. (Behdad Esfahbod) +- Support font emboldening. (Behdad Esfahbod) +- Support feature ranges with AAT shaping. (Behdad Esfahbod) +- Experimental support to cubic curves in “glyf” table, see + https://github.com/harfbuzz/boring-expansion-spec/blob/main/glyf1-cubicOutlines.md + for spec. (Behdad Esfahbod) +- Various subsetter improvements. (Garret Rieger, Qunxin Liu, Behdad Esfahbod) +- Various documentation improvements. + (Behdad Esfahbod, Matthias Clasen, Khaled Hosny) +- Significantly reduced memory use during shaping. (Behdad Esfahbod) +- Greatly reduced memory use during subsetting “CFF” table. (Behdad Esfahbod) +- New command line utility, hb-info, for querying various font information. + (Behdad Esfahbod, Matthias Clasen) +- New hb-shape/hb-view options: --glyphs, --color-palette, --font-bold, + --font-grade, and --named-instance. (Behdad Esfahbod) +- Miscellaneous fixes and improvements. + (Amir Masoud Abdol, Andres Salomon, Behdad Esfahbod, Chun-wei Fan, + Garret Rieger, Jens Kutilek, Khaled Hosny, Konstantin Käfer, Matthias Clasen, + Nirbheek Chauhan, Pedro J. Estébanez, Qunxin Liu, Sergei Trofimovich) + +- New API: ++HB_FONT_NO_VAR_NAMED_INSTANCE ++HB_PAINT_IMAGE_FORMAT_BGRA ++HB_PAINT_IMAGE_FORMAT_PNG ++HB_PAINT_IMAGE_FORMAT_SVG ++hb_cairo_font_face_create_for_face ++hb_cairo_font_face_create_for_font ++hb_cairo_font_face_get_face ++hb_cairo_font_face_get_font ++hb_cairo_font_face_get_scale_factor ++hb_cairo_font_face_set_font_init_func ++hb_cairo_font_face_set_scale_factor ++hb_cairo_font_init_func_t ++hb_cairo_glyphs_from_buffer ++hb_cairo_scaled_font_get_font ++hb_color_line_get_color_stops ++hb_color_line_get_color_stops_func_t ++hb_color_line_get_extend ++hb_color_line_get_extend_func_t ++hb_color_line_t ++hb_color_stop_t ++hb_draw_funcs_get_empty ++hb_draw_funcs_get_user_data ++hb_draw_funcs_set_user_data ++hb_face_collect_nominal_glyph_mapping ++hb_font_draw_glyph ++hb_font_draw_glyph_func_t ++hb_font_funcs_set_draw_glyph_func ++hb_font_funcs_set_paint_glyph_func ++hb_font_get_synthetic_bold ++hb_font_get_var_named_instance ++hb_font_paint_glyph ++hb_font_paint_glyph_func_t ++hb_font_set_synthetic_bold ++hb_map_keys ++hb_map_next ++hb_map_update ++hb_map_values ++hb_ot_color_glyph_has_paint ++hb_ot_color_has_paint ++hb_ot_layout_script_select_language2 ++hb_ot_name_id_predefined_t ++hb_paint_color ++hb_paint_color_func_t ++hb_paint_composite_mode_t ++hb_paint_custom_palette_color ++hb_paint_custom_palette_color_func_t ++hb_paint_extend_t ++hb_paint_funcs_create ++hb_paint_funcs_destroy ++hb_paint_funcs_get_empty ++hb_paint_funcs_get_user_data ++hb_paint_funcs_is_immutable ++hb_paint_funcs_make_immutable ++hb_paint_funcs_reference ++hb_paint_funcs_set_color_func ++hb_paint_funcs_set_custom_palette_color_func ++hb_paint_funcs_set_image_func ++hb_paint_funcs_set_linear_gradient_func ++hb_paint_funcs_set_pop_clip_func ++hb_paint_funcs_set_pop_group_func ++hb_paint_funcs_set_pop_transform_func ++hb_paint_funcs_set_push_clip_glyph_func ++hb_paint_funcs_set_push_clip_rectangle_func ++hb_paint_funcs_set_push_group_func ++hb_paint_funcs_set_push_transform_func ++hb_paint_funcs_set_radial_gradient_func ++hb_paint_funcs_set_sweep_gradient_func ++hb_paint_funcs_set_user_data ++hb_paint_funcs_t ++hb_paint_image ++hb_paint_image_func_t ++hb_paint_linear_gradient ++hb_paint_linear_gradient_func_t ++hb_paint_pop_clip ++hb_paint_pop_clip_func_t ++hb_paint_pop_group ++hb_paint_pop_group_func_t ++hb_paint_pop_transform ++hb_paint_pop_transform_func_t ++hb_paint_push_clip_glyph ++hb_paint_push_clip_glyph_func_t ++hb_paint_push_clip_rectangle ++hb_paint_push_clip_rectangle_func_t ++hb_paint_push_group ++hb_paint_push_group_func_t ++hb_paint_push_transform ++hb_paint_push_transform_func_t ++hb_paint_radial_gradient ++hb_paint_radial_gradient_func_t ++hb_paint_sweep_gradient ++hb_paint_sweep_gradient_func_t ++hb_set_is_inverted ++hb_subset_input_keep_everything + +- Deprecated API: ++hb_font_funcs_set_glyph_shape_func ++hb_font_get_glyph_shape_func_t ++hb_font_get_glyph_shape + + +Overview of changes leading to 6.0.0 +Friday, December 16, 2022 +==================================== +- A new API have been added to pre-process the face and speed up future + subsetting operations on that face. Provides up to a 95% reduction in + subsetting times when the same face is subset more than once. + + For more details and benchmarks, see: + https://github.com/harfbuzz/harfbuzz/blob/main/docs/subset-preprocessing.md + + (Garret Rieger, Behdad Esfahbod) + +- Shaping have been speedup by skipping entire lookups when the buffer contents + don't intersect with the lookup. Shows up to a 10% speedup in shaping some + fonts. (Behdad Esfahbod) + +- A new experimental feature, “Variable Composites” (enabled by passing + -Dexperimental_api=true to meson), is also featured in this release. + This technology enables drastic compression of fonts in the Chinese, + Japanese, Korean, and other writing systems, by reusing the OpenType Font + Variations technology for encoding “smart components” into the font. + + The specification for these extensions to the font format can be found in: + https://github.com/harfbuzz/boring-expansion-spec/blob/glyf1/glyf1.md + + A test variable-font with ~7160 Hangul syllables derived from the + NotoSerifKR-VF font has been built, with existing OpenType technology, as + well as with the new Variable Composites (VarComposites) technology. The + VarComposites font is over 90% smaller than the OpenType version of the font! + Both fonts can be obtained from the “smarties” repository: + https://github.com/behdad/smarties/tree/3.0/fonts/hangul/serif + + When building HarfBuzz with experimental features enabled, you can test + the “smarties” font with a sample character like this: + + $ hb-view butchered-hangul-serif-smarties-variable.ttf -u AE01 --variations=wght=700 + + (Behdad Esfahbod) + +- The HarfBuzz subsetter can now drop axes by pinning them to specific values + (also referred to as instancing). There are a couple of restrictions + currently: + + - Only works with TrueType (“glyf”) based fonts. “CFF2” fonts are not yet + supported. + - Only supports the case where all axes in a font are pinned. + + (Garret Rieger, Qunxin Liu) + +- Miscellaneous fixes and improvements. + + (Behdad Esfahbod, Christoph Reiter, David Corbett, Eli Schwartz, Garret + Rieger, Joel Auterson, Jordan Petridis, Khaled Hosny, Lorenz Wildberg, + Marco Rebhan, Martin Storsjö, Matthias Clasen, Qunxin Liu, Satadru Pramanik) + + +- New API ++hb_subset_input_pin_axis_location() ++hb_subset_input_pin_axis_to_default() ++hb_subset_preprocess() + + +Overview of changes leading to 5.3.1 +Wednesday, October 19, 2022 +==================================== +- Subsetter repacker fixes. (Garret Rieger) +- Adjust Grapheme clusters for Katakana voiced sound marks. (Behdad Esfahbod) +- New “hb-subset” option “--preprocess-face”. (Garret Rieger) + + +Overview of changes leading to 5.3.0 +Saturday, October 8, 2022 +"Women, Life, Freedom" #MahsaAmini +==================================== +- Don’t add glyphs from dropped MATH or COLR tables to the subset glyphs. + (Khaled Hosny) +- Map “rlig” to appropriate AAT feature selectors. (Jonathan Kew) +- Update USE data files to latest version. (David Corbett) +- Check “CBDT” extents first before outline tables, to help with fonts that + also include an empty “glyf” table. (Khaled Hosny) +- More work towards variable font instancing in the subsetter. (Qunxin Liu) +- Subsetter repacker improvements. (Garret Rieger) +- New API: ++hb_ot_layout_lookup_get_optical_bound() ++hb_face_builder_sort_tables() + + +Overview of changes leading to 5.2.0 +Saturday, September 17, 2022 +==================================== +- Fix regressions in hb-ft font functions for FT_Face’s with transformation + matrix. (Behdad Esfahbod) +- The experimental hb-repacker API now supports splitting several GPOS subtable + types when needed. (Garret Rieger) +- The HarfBuzz extensions to OpenType font format are now opt-in behind + build-time flags. (Behdad Esfahbod) +- The experimental hb-subset variable fonts instantiation API can now + instantiate more font tables and arbitrary axis locations. (Qunxin Liu) +- Unicode 15 support. (David Corbett) +- Various documentation improvements. (Behdad Esfahbod, Matthias Clasen) +- The hb-view command line tool now detects WezTerm inline images support. + (Wez Furlong) +- Fix FreeType and ICU dependency lookup with meson. (Xavier Claessens) + +- New API: ++HB_SCRIPT_KAWI ++HB_SCRIPT_NAG_MUNDARI + + +Overview of changes leading to 5.1.0 +Sunday, July 31, 2022 +==================================== +- More extensive buffer tracing messages. (Behdad Esfahbod) +- Fix hb-ft regression in bitmap fonts rendering. (Behdad Esfahbod) +- Support extension promotion of lookups in hb-subset-repacker. (Garret Rieger) +- A new HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL for scripts that use elongation + (e.g. Arabic) to signify where it is safe to insert tatweel glyph without + interrupting shaping. (Behdad Esfahbod) +- Add “--safe-to-insert-tatweel” to “hb-shape” tool. (Behdad Esfahbod) + +- New API ++HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL ++HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL + + +Overview of changes leading to 5.0.1 +Saturday, July 23, 2022 +==================================== +- Fix version 2 “avar” table with hb-ft. (Behdad Esfahbod) + + +Overview of changes leading to 5.0.0 +Saturday, July 23, 2022 +==================================== +- Support fonts with more than 65535 glyphs in “GDEF”, “GSUB”, and “GPOS” + tables. This is part of https://github.com/be-fonts/boring-expansion-spec to + extend OpenType in a backward-compatible way. + (Behdad Esfahbod, Garret Rieger) +- Complete support for more than 65535 glyphs in “glyf” table that started in + 4.0.0 release. Part of boring-expansion-spec. (Behdad Esfahbod) +- Support version 2 of “avar” table. Part of boring-expansion-spec. + (Behdad Esfahbod) +- Fix mark attachment on multiple substitutions in some cases. + (Behdad Esfahbod) +- Fix application of “calt”, “rclt”, and “ccmp” features to better match + Uniscribe behaviour with some Arabic fonts. (Behdad Esfahbod) +- Improvement to interaction between multiple cursive attachments. + (Behdad Esfahbod) +- Improve multiple mark interactions in Hebrew. (Behdad Esfahbod) +- Implement language-specific forms in AAT shaping. (Behdad Esfahbod) +- Fix variation of “VORG” table. (Behdad Esfahbod) +- Support for specific script tags to be retained in the subsetter, and add + “--layout-scripts” option to “hb-subset” tool. (Garret Rieger) +- Accept space as delimiter for --features/--variations in command line tools. +- Improve subsetting of “COLR” table. (Qunxin Liu) +- Improved fuzzing coverage for ot-math API. (Frédéric Wang) +- Fix “kern” table version 2 (AAT) sanitization on 32-bit systems. + (Behdad Esfahbod) +- Allow negative glyph advances from “graphite2” shaper. (Stephan Bergmann) +- Implement loading (color) bitmap fonts with hb-ft. (Behdad Esfahbod) +- Fix regression in hb-ft when changing font size. (Behdad Esfahbod) +- Fix build on GCC < 7. (Kleis Auke Wolthuizen) +- Dynamically load dwrite.dll on windows if “directwrite” shaper is enabled. + (Luca Bacci) +- Provide a single-file harfbuzz-subset.cc file for easier alternate building + of hb-subset library, similar to harfbuzz.cc. (Khaled Hosny) + +- New API ++HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG ++hb_language_matches() + + +Overview of changes leading to 4.4.1 +Wednesday, June 29, 2022 +==================================== +- Fix test failure with some compilers. +- Fix Telugu and Kannada kerning regression. + + +Overview of changes leading to 4.4.0 +Monday, June 27, 2022 +==================================== +- Caching of variable fonts shaping, in particular when using HarfBuzz’s own + font loading functions (ot). Bringing performance of variable shaping in par + with non-variable fonts shaping. (Behdad Esfahbod) +- Caching of format 2 “Contextual Substitution” and “Chained Contexts + Substitution” lookups. Resulting in up to 20% speedup of lookup-heavy fonts + like Gulzar or Noto Nastaliq Urdu. (Behdad Esfahbod) +- Improved ANSI output from hb-view. (Behdad Esfahbod) +- Support for shaping legacy, pre-OpenType Windows 3.1-era, Arabic fonts that + relied on a fixed PUA encoding. (Khaled Hosny, Behdad Esfahbod) +- Sinhala script is now shaped by the USE shaper instead of “indic” one. + (Behdad Esfahbod, David Corbett) +- Thai shaper improvements. (David Corbett) +- hb-ot-name API supports approximate BCP-47 language matching, for example + asking for “en_US” in a font that has only “en” names will return them. + (Behdad Esfahbod) +- Optimized TrueType glyph shape loading. (Behdad Esfahbod) +- Fix subsetting of HarfBuzz faces created via hb_face_create_for_tables(). + (Garret Rieger) +- Add 32 bit var store support to the subsetter. (Garret Rieger) + +- New API ++HB_BUFFER_FLAG_DEFINED ++HB_BUFFER_SERIALIZE_FLAG_DEFINED ++hb_font_changed() ++hb_font_get_serial() ++hb_ft_hb_font_changed() ++hb_set_hash() ++hb_map_copy() ++hb_map_hash() + + +Overview of changes leading to 4.3.0 +Friday, May 20, 2022 +==================================== +- Major speed up in loading and subsetting fonts, especially in + handling CFF table. Subsetting some fonts is now 3 times faster. + (Behdad Esfahbod, Garret Rieger) +- Speed up blending CFF2 table. (Behdad Esfahbod) +- Speed up hb_ot_tags_from_language(). (Behdad Esfahbod, David Corbett) +- Fix USE classification of U+10A38 to fix multiple marks on single Kharoshthi + base. (David Corbett) +- Fix parsing of empty CFF Index. (Behdad Esfahbod) +- Fix subsetting CPAL table with partial palette overlaps. (Garret Rieger) + +- New API ++hb_map_is_equal() (Behdad Esfahbod) + + +Overview of changes leading to 4.2.1 +Sunday, April 24, 2022 +==================================== +- Make sure hb_blob_create_from_file_or_fail() always returns nullptr in case + of failure and not empty blob sometimes. (Khaled Hosny) +- Add --passthrough-tables option to hb-subset. (Cosimo Lupo) +- Reinstate a pause after basic features in Khmer shaper, fixing a regression + introduced in previous release. (Behdad Esfahbod) +- Better handling of Regional_Indicator when shaped with RTL-native scripts, + reverting earlier fix that caused regressions in AAT shaping. (Behdad Esfahbod) + + +Overview of changes leading to 4.2.0 +Wednesday, March 30, 2022 +==================================== +- Source code reorganization, splitting large hb-ot-layout files into smaller, + per-subtable ones under OT/Layout/*. Code for more tables will follow suit in + later releases. (Garret Rieger, Behdad Esfahbod) +- Revert Indic shaper change in previous release that broke some fonts and + instead make per-syllable restriction of “GSUB” application limited to + script-specific Indic features, while applying them and discretionary + features in one go. (Behdad Esfahbod) +- Fix decoding of private in gvar table. (Behdad Esfahbod) +- Fix handling of contextual lookups that delete too many glyphs. (Behdad Esfahbod) +- Make “morx” deleted glyphs don’t block “GPOS” application. (Behdad Esfahbod) +- Various build fixes. (Chun-wei Fan, Khaled Hosny) + +- New API ++hb_set_next_many() (Andrew John) + + +Overview of changes leading to 4.1.0 +Wednesday, March 23, 2022 +==================================== +- Various OSS-Fuzz fixes. (Behdad Esfahbod) +- Make fallback vertical-origin match FreeType’s. (Behdad Esfahbod) +- Treat visible viramas like dependent vowels in USE shaper. (David Corbett) +- Apply presentation forms features and discretionary features in one go in + Indic shaper, which seems to match Uniscribe and CoreText behaviour. + (Behdad Esfahbod, David Corbett) +- Various bug fixes. + +- New API ++hb_set_add_sorted_array() (Andrew John) + + +Overview of changes leading to 4.0.1 +Friday, March 11, 2022 +==================================== +- Update OpenType to AAT mappings for “hist” and “vrtr” features. + (Florian Pircher) +- Update IANA Language Subtag Registry to 2022-03-02. (David Corbett) +- Update USE shaper to allow any non-numeric tail in a symbol cluster, and + remove obsolete data overrides. (David Corbett) +- Fix handling of baseline variations to return correctly scaled values. + (Matthias Clasen) +- A new experimental hb_subset_repack_or_fail() to repack an array of objects, + eliminating offset overflows. The API is not available unless HarfBuzz is + built with experimental APIs enabled. (Qunxin Liu) + +- New experimental API ++hb_link_t ++hb_object_t ++hb_subset_repack_or_fail() + + +Overview of changes leading to 4.0.0 +Tuesday, March 1, 2022 +==================================== +- New public API to create subset plan and gather information on things like + glyph mappings in the final subset. The plan can then be passed on to perform + the subsetting operation. (Garret Rieger) +- Draw API for extracting glyph shapes have been extended and finalized and is + no longer an experimental API. The draw API supports glyf, CFF and CFF2 + glyph outlines tables, and applies variation settings set on the font as well + as synthetic slant. The new public API is not backward compatible with the + previous, non-public, experimental API. (Behdad Esfahbod) +- The hb-view tool will use HarfBuzz draw API to render the glyphs instead of + cairo-ft when compiled with Cairo 1.17.5 or newer, setting HB_DRAW + environment variable to 1 or 0 will force using or not use the draw API, + respectively. (Behdad Esfahbod) +- The hb-shape and hb-view tools now default to using HarfBuzz’s own font + loading functions (ot) instead of FreeType ones (ft). They also have a new + option, --font-slant, to apply synthetic slant to the font. (Behdad Esfahbod) +- HarfBuzz now supports more than 65535 (the OpenType limit) glyph shapes and + metrics. See https://github.com/be-fonts/boring-expansion-spec/issues/6 and + https://github.com/be-fonts/boring-expansion-spec/issues/7 for details. + (Behdad Esfahbod) +- New API to get the dominant horizontal baseline tag for a given script. + (Behdad Esfahbod) +- New API to get the baseline positions from the font, and synthesize missing + ones. As well as new API to get font metrics and synthesize missing ones. + (Matthias Clasen) +- Improvements to finding dependencies on Windows when building with Visual + Studio. (Chun-wei Fan) +- New buffer flag, HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT, that must be set + during shaping for HB_GLYPH_FLAG_UNSAFE_TO_CONCAT flag to be reliably + produced. This is to limit the performance hit of producing this flag to when + it is actually needed. (Behdad Esfahbod) +- Documentation improvements. (Matthias Clasen) + +- New API + - General: + +HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT + +hb_var_num_t + + - Draw: + +hb_draw_funcs_t + +hb_draw_funcs_create() + +hb_draw_funcs_reference() + +hb_draw_funcs_destroy() + +hb_draw_funcs_is_immutable() + +hb_draw_funcs_make_immutable() + +hb_draw_move_to_func_t + +hb_draw_funcs_set_move_to_func() + +hb_draw_line_to_func_t + +hb_draw_funcs_set_line_to_func() + +hb_draw_quadratic_to_func_t + +hb_draw_funcs_set_quadratic_to_func() + +hb_draw_cubic_to_func_t + +hb_draw_funcs_set_cubic_to_func() + +hb_draw_close_path_func_t + +hb_draw_funcs_set_close_path_func() + +hb_draw_state_t + +HB_DRAW_STATE_DEFAULT + +hb_draw_move_to() + +hb_draw_line_to() + +hb_draw_quadratic_to() + +hb_draw_cubic_to() + +hb_draw_close_path() + +hb_font_get_glyph_shape_func_t + +hb_font_funcs_set_glyph_shape_func() + +hb_font_get_glyph_shape() + + - OpenType layout + +HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL + +HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL + +hb_ot_layout_get_horizontal_baseline_tag_for_script() + +hb_ot_layout_get_baseline_with_fallback() + + - Metrics: + +hb_ot_metrics_get_position_with_fallback() + + - Subset: + +hb_subset_plan_t + +hb_subset_plan_create_or_fail() + +hb_subset_plan_reference() + +hb_subset_plan_destroy() + +hb_subset_plan_set_user_data() + +hb_subset_plan_get_user_data() + +hb_subset_plan_execute_or_fail() + +hb_subset_plan_unicode_to_old_glyph_mapping() + +hb_subset_plan_new_to_old_glyph_mapping() + +hb_subset_plan_old_to_new_glyph_mapping() + + +Overview of changes leading to 3.4.0 +Sunday, February 13, 2022 +==================================== +- Perform sanity checks on shaping results is now part of “harfbuzz” library + and can be enabled by setting the buffer flag HB_BUFFER_FLAG_VERIFY. + (Behdad Esfahbod) +- Arabic Mark Transient Reordering Algorithm have been updated to revision 6. + (Khaled Hosny) +- ISO 15924 code for mathematical notation, ‘Zmth’, now maps to the OpenType + ‘math’ tag. (Alexis King) +- It is now possible to get at once all math kerning values for a given glyph + at a given corner. (Alexis King) +- Fix locale_t portability issues on systems the typedef’s it to a void + pointer. (Behdad Esfahbod) + +- New API: ++HB_BUFFER_FLAG_VERIFY ++HB_OT_TAG_MATH_SCRIPT ++HB_SCRIPT_MATH ++hb_ot_math_kern_entry_t ++hb_ot_math_get_glyph_kernings() + +- Deprecated API ++HB_OT_MATH_SCRIPT + + +Overview of changes leading to 3.3.2 +Sunday, February 6, 2022 +==================================== +- Revert splitting of pair positioning values introduced in 3.3.0 as it proved + problematic. (Behdad Esfahbod) + + +Overview of changes leading to 3.3.1 +Monday, January 31, 2022 +==================================== +- Fix heap-use-after-free in harfbuzz-subset introduced in previous release. + (Garret Rieger) + + +Overview of changes leading to 3.3.0 +Monday, January 31, 2022 +==================================== +- Improved documentation. (Matthias Clasen) +- Internal code cleanup, using C++ standard library more. (Behdad Esfahbod) +- The low 16-bits of face index will be used by hb_face_create() to select a + face inside a font collection file format, while the high 16-bits will be + used by hb_font_create() to load the named instance. (Behdad Esfahbod) +- Glyph positions and other font metrics now apply synthetic slant set by + hb_font_set_synthetic_slant(), for improved positioning for synthetically + slanted fonts. (Behdad Esfahbod) +- Fixed unintentional locale dependency in hb_variation_to_string() for decimal + point representation. (Matthias Clasen) +- When applying pair positioning (kerning) the positioning value is split + between the two sides of the pair for improved cursor positioning between + such pairs. (Behdad Esfahbod) +- Introduced new HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, to be used in conjunction + with HB_GLYPH_FLAG_UNSAFE_TO_BREAK for optimizing re-shaping during line + breaking. Check the documentation for further details. (Behdad Esfahbod) +- Improved handling of macrolanguages when mapping BCP 47 codes to OpenType + tags. (David Corbett) + +- New API: ++HB_GLYPH_FLAG_UNSAFE_TO_CONCAT ++hb_segment_properties_overlay() ++hb_buffer_create_similar() ++hb_font_set_synthetic_slant() ++hb_font_get_synthetic_slant() ++hb_font_get_var_coords_design() + + +Overview of changes leading to 3.2.0 +Friday, November 26, 2021 +==================================== +“harfbuzz” library improvements: +- Fixed shaping of Apple Color Emoji flags in right-to-left context. (Behdad Esfahbod) +- Fixed positioning of CFF fonts in HB_TINY profile. (Behdad Esfahbod) +- OpenType 1.9 language tags update. (David Corbett) +- Add HB_NO_VERTICAL config option. +- Add HB_CONFIG_OVERRIDE_H for easier configuration. (Behdad Esfahbod) + +“harfbuzz-subset” library improvements: +- Improved packing of cmap, loca, and Ligature tables. (Garret Rieger) +- Significantly improved overflow-resolution strategy in the repacker. (Garret Rieger) + + +Overview of changes leading to 3.1.2 +Friday, November 26, 2021 +==================================== +- hb-shape / hb-view: revert treating text on the commandline as single + paragraph (was introduced in 3.0.0); add new --single-par to do that. + (Behdad Esfahbod) +- Subsetter bug fixes. (Garret Rieger, Qunxin Liu, Behdad Esfahbod) + + +Overview of changes leading to 3.1.1 +Wednesday, November 8, 2021 +==================================== +- Work around GCC cast-align error/warning on some platforms. (Behdad Esfahbod) +- Documentation improvements. (Matthias Clasen) + + +Overview of changes leading to 3.1.0 +Wednesday, November 3, 2021 +==================================== +- Better offset-overflow handling in the subsetter library. (Garret Rieger) +- Improved Unicode 14 properties in the USE shaper, and various other USE + shaper fixes. (David Corbett) +- MATH and COLR v1 tables subsetting support, and various other subsetter fixes. + (Qunxin Liu) +- Support for Pwo Karen / Ason Chin medial la. (Simon Cozens) +- Apply GPOS positioning when substituting with morx table, if kerx is missing. + (Behdad Esfahbod) +- Apply calt and clig features across syllable boundaries in Indic shaper. + (Behdad Esfahbod) +- meson option for enabling Graphite 2 has been renamed to graphite2. +- Build and documentation fixes. + +- New API: ++hb_buffer_set_not_found_glyph() ++hb_buffer_get_not_found_glyph() + + +Overview of changes leading to 3.0.0 +Friday, September 17, 2021 +==================================== +- Unicode 14.0 support (David Corbett). +- The hb-subset API and the harfbuzz-subset library's ABI are now declared + stable. The harfbuzz-subset library would not have been possible without the + work of Garret Rieger and Qunxin Liu from Google Fonts, and the earlier work + of Michiharu Ariza from Adobe. +- The hb-style API is now stable and no longer experimental. + +- New API: ++hb_style_tag_t ++hb_style_get_value() ++hb_subset_input_t ++hb_subset_flags_t ++hb_subset_sets_t ++hb_subset_input_create_or_fail() ++hb_subset_input_reference() ++hb_subset_input_destroy() ++hb_subset_input_set_user_data() ++hb_subset_input_get_user_data() ++hb_subset_input_unicode_set() ++hb_subset_input_glyph_set() ++hb_subset_input_set() ++hb_subset_input_get_flags() ++hb_subset_input_set_flags() ++hb_subset_or_fail() + +- Removed old unstable harfbuzz-subset API: +-hb_subset_input_nameid_set() +-hb_subset_input_namelangid_set() +-hb_subset_input_layout_features_set() +-hb_subset_input_no_subset_tables_set() +-hb_subset_input_drop_tables_set() +-hb_subset_input_set_drop_hints() +-hb_subset_input_get_drop_hints() +-hb_subset_input_set_desubroutinize() +-hb_subset_input_get_desubroutinize() +-hb_subset_input_set_retain_gids() +-hb_subset_input_get_retain_gids() +-hb_subset_input_set_name_legacy() +-hb_subset_input_get_name_legacy() +-hb_subset_input_set_overlaps_flag() +-hb_subset_input_get_overlaps_flag() +-hb_subset_input_set_notdef_outline() +-hb_subset_input_get_notdef_outline() +-hb_subset_input_set_no_prune_unicode_ranges() +-hb_subset_input_get_no_prune_unicode_ranges() +-hb_subset() + + +Overview of changes leading to 2.9.1 +Tuesday, September 7, 2021 +==================================== +- Final subset API is in place and if no issues are discovered, it will be the + stable subset API of HarfBuzz 3.0.0. Old API is kept to ease transition, but + will be removed in 3.0.0. +- Various fuzzer-found bug fixes. +- hb_buffer_append() now handles the pre- and post-context which previously + were left unchanged in the destination buffer. +- hb-view / hb-shape now accept following new arguments: + o --unicodes-before/after: takes a list of hex numbers that represent Unicode + codepoints. +- Undeprecated API: + hb_set_invert() + + +Overview of changes leading to 2.9.0 +Wednesday, August 18, 2021 +History Repeats Itself (Afghanistan) +==================================== +- Subsetter API is being stabilized, with the first stable API to happen in + 3.0.0 release (https://github.com/harfbuzz/harfbuzz/issues/3078). +- Support multiple variation axes with same tag, aka HOI. +- The “coretext” testing shaper now passes font variations to CoreText. +- hb-shape/hb-view does not break line at new lines unless text is read from + file. +- hb-view and hb-subset has a --batch now, similar to hb-shape. +- The --batch mode now uses ; as argument separator instead of : used previously. +- The --batch in hb-shape does not expect 0th argument anymore. That is, the + lines read are interpreted as argv[1:], instead of argv[0:]. +- The --batch option has been undocumented. We are ready to document it; send + feedback if you find it useful. +- hb-subset got arguments revamps. Added much-requested --gids-file, --glyphs, + --glyphs-file, --unicodes-file, supporting ranges in --unicodes. +- Various bug fixes. + + +Overview of changes leading to 2.8.2 +Tuesday, July 8, 2021 +==================================== +- Shaping LTR digits for RTL scripts now makes the native direction of the + digits LTR, applying shaping and positioning rules on the same glyph order as + Uniscribe. (Jonathan Kew, Khaled Hosny). +- Subsetting COLR v1 and CPAL tables is now supported. (Garret Rieger, Qunxin Liu) +- Various fixes and improvements to the subsetter. (Garret Rieger, Qunxin Liu, Behdad) +- When applying morx table, mark glyph widths should not be zeroed. (Jonathan Kew) +- GPOS is preferred over kerx, if GSUB was applied. (Behdad) +- Regional_Indicator pairs are grouped together when clustering. (Behdad) +- New API: ++hb_blob_create_or_fail() ++hb_blob_create_from_file_or_fail() ++hb_set_copy() + + +Overview of changes leading to 2.8.1 +Tuesday, May 4, 2021 +==================================== +- Subsetter now fully supports GSUB/GPOS/GDEF tables (including variations); as + such, layout tables are retained by subsetter by default. (Garret Rieger, Qunxin Liu) +- Build scripts no longer check for FontConfig as HarfBuzz does not use it. +- hb-view supports iTerm2 and kitty inline image protocols (Khaled Hosny), + it can also use Chafa for terminal graphics if available (Hans Petter Jansson). + +Overview of changes leading to 2.8.0 +Tuesday, March 16, 2021 +==================================== +- Shape joining scripts other than Arabic/Syriac using the Universal Shaping Engine. + Previously these were shaped using the generalized Arabic shaper. (David Corbett) +- Fix regression in shaping of U+0B55 ORIYA SIGN OVERLINE. (David Corbett) +- Update language tags. (David Corbett) +- Variations: reduce error: do not round each interpolated delta. (Just van Rossum) +- Documentation improvements. (Khaled Hosny, Nathan Willis) +- Subsetter improvements: subsets most, if not all, lookup types now. (Garret Rieger, Qunxin Liu) +- Fuzzer-found fixes and other improvements when memory failures happen. (Behdad) +- Removed most atomic implementations now that we have C++11 atomic impl. (Behdad) +- General codebase upkeep; using more C++11 features: constexpr constructors, etc. (Behdad) + + +Overview of changes leading to 2.7.4 +Sunday, December 27, 2020 +==================================== +- Fix missing --enable-introspection configure option from previous release + tarball. +- Documentation updates. + + +Overview of changes leading to 2.7.3 +Wednesday, December 23, 2020 +==================================== +- Update USE shaper to 2020-08-13 specification, and other improvements. +- Don’t disable liga feature in myanmar shaper, to match Uniscribe. +- Improvements to language and script tags handling. +- Update language system tag registry to OpenType 1.8.4 +- Support for serializing and deserializing Unicode buffers. Serialized buffers + are now delimited with `<>` or `[]` based on whether it is a Unicode or + glyphs buffer. +- Increase buffer work limits to handle fonts with many complex lookups. +- Handle more shaping operations in trace output. +- Memory access fixes. +- More OOM fixes. +- Improved documentation. +- Build system improvements. +- New API: ++hb_buffer_has_positions() ++hb_buffer_serialize() ++hb_buffer_serialize_unicode() ++hb_buffer_deserialize_unicode() + + +Overview of changes leading to 2.7.2 +Saturday, August 29, 2020 +==================================== +- Fix a regression in the previous release that caused a crash with Kaithi. +- More OOM fixes. + + +Overview of changes leading to 2.7.1 +Thursday, August 13, 2020 +==================================== +- ot-funcs now handles variable empty glyphs better when hvar/vvar isn't present. +- Reverted a GDEF processing regression. +- A couple of fixes to handle OOM better. + + +Overview of changes leading to 2.7.0 +Saturday, July 25, 2020 +==================================== +- Use an implementation for round that always rounds up, some minor fluctuations + are expected on var font specially when hb-ot callback is used. +- Fix an AAT's `kerx` issue on broken rendering of Devanagari Sangam MN. +- Remove AAT's `lcar` table support from _get_ligature_carets API, not even much + use on macOS installed fonts (only two files). GDEF support is the recommended + one and expected to work properly after issues fixed two releases ago. +- Minor memory fixes to handle OOM better specially in hb-ft. +- Minor .so files versioning scheme change and remove stable/unstable scheme + differences, was never used in practice (always default to stable scheme). +- We are now suggesting careful packaging of the library using meson, + https://github.com/harfbuzz/harfbuzz/wiki/Notes-on-migration-to-meson + for more information. +- Distribution package URL is changed, either use GitHub generated tarballs, + `https://github.com/harfbuzz/harfbuzz/archive/$pkgver.tar.gz` + or, even more preferably use commit hash of the release and git checkouts like, + `git+https://github.com/harfbuzz/harfbuzz#commit=$commit` + + +Overview of changes leading to 2.6.8 +Monday, June 22, 2020 +==================================== +- New API to fetch glyph alternates from GSUB table. +- hb-coretext build fix for macOS < 10.10. +- Meson build fixes, cmake port removal is postponed but please prepare for + it and give us feedback. + Autotools is still our main build system however please consider + experimenting with meson also for packaging the library. +- New API: ++hb_ot_layout_lookup_get_glyph_alternates() + + +Overview of changes leading to 2.6.7 +Wednesday, June 3, 2020 +==================================== +- Update to Unicode 13.0.0. +- Fix hb_ot_layout_get_ligature_carets for fonts without lcar table, it was + completely broken for all the other fonts since 2.1.2. +- As a part of our migration to meson, this release will be the last one + to provide cmake port files but autotools still is our main build system. + There is a possibility that the next version or the after be released + using meson. + + +Overview of changes leading to 2.6.6 +Tuesday, May 12, 2020 +==================================== +- A fix in AAT kerning for Geeza Pro. +- Better support for resource fork fonts on macOS. + + +Overview of changes leading to 2.6.5 +Friday, April 17, 2020 +==================================== +- Add experimental meson build system. Autotools is still the primary + and supported build system. +- AAT is now always preferred for horizontal scripts when both AAT and OT + layout tables exist at the same time. +- Subsetter improvements. +- New API: ++hb_ft_font_lock_face() ++hb_ft_font_unlock_face() + + +Overview of changes leading to 2.6.4 +Monday, October 29, 2019 +==================================== +- Small bug fix. +- Build fixes. + + +Overview of changes leading to 2.6.3 +Monday, October 28, 2019 +==================================== +- Misc small fixes, mostly to build-related issues. +- New API: ++hb_font_get_nominal_glyphs() + + +Overview of changes leading to 2.6.2 +Monday, September 30, 2019 +==================================== +- Misc small fixes, mostly to build-related issues. + + +Overview of changes leading to 2.6.1 +Thursday, August 22, 2019 +==================================== +- Fix regression with hb_font_create_sub_font scaling introduced in 2.6.0. +- Change interpretation of font PTEM size / CoreText font size handling. + See https://github.com/harfbuzz/harfbuzz/pull/1484 +- hb-ot-font: Prefer symbol cmap subtable if present. +- Apply 'dist'/'abvm'/'blwm' features to all scripts. +- Drop experimental DirectWrite API. + + +Overview of changes leading to 2.6.0 +Tuesday, August 13, 2019 +==================================== +- New OpenType metrics, baseline, and metadata table access APIs. +- New API to set font variations to a named-instance. +- New hb-gdi.h header and API for creating hb_face_t from HFONT. +- Amalgam: Provide a single-file harfbuzz.cc file for easier alternate building. +- More size-reduction configurable options, enabled by HB_TINY. +- New API: ++hb_font_set_var_named_instance() ++hb_gdi_face_create() ++hb_ot_layout_baseline_tag_t ++hb_ot_layout_get_baseline() ++hb_ot_meta_tag_t ++hb_ot_meta_get_entry_tags() ++hb_ot_meta_reference_entry() ++hb_ot_metrics_tag_t ++hb_ot_metrics_get_position() ++hb_ot_metrics_get_variation() ++hb_ot_metrics_get_x_variation() ++hb_ot_metrics_get_y_variation() + + +Overview of changes leading to 2.5.3 +Wednesday, June 26, 2019 +==================================== +- Fix UCD script data for Unicode 10+ scripts. This was broken since 2.5.0. +- More optimizations for HB_TINY. + + +Overview of changes leading to 2.5.2 +Thursday, June 20, 2019 +==================================== +- More hb-config.hh facilities to shrink library size, namely when built as + HB_TINY. +- New documentation of custom configurations in CONFIG.md. +- Fix build on gcc 4.8. That's supported again. +- Universal Shaping Engine improvements thanks to David Corbett. +- API Changes: Undeprecate some horizontal-kerning API and re-enable in hb-ft, + such that Type1 fonts will continue kerning. + + +Overview of changes leading to 2.5.1 +Friday, May 31, 2019 +==================================== +- Fix build with various versions of Visual Studio. +- Improved documentation, thanks to Nathan Willis. +- Bugfix in subsetting glyf table. +- Improved scripts for cross-compiling for Windows using mingw. +- Rename HB_MATH_GLYPH_PART_FLAG_EXTENDER to HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER. + A deprecated macro is added for backwards-compatibility. + + +Overview of changes leading to 2.5.0 +Friday, May 24, 2019 +==================================== +- This release does not include much functional changes, but includes major internal + code-base changes. We now require C++11. Support for gcc 4.8 and earlier has been + dropped. +- New hb-config.hh facility for compiling smaller library for embedded and web usecases. +- New Unicode Character Database implementation that is half the size of previously-used + UCDN. +- Subsetter improvements. +- Improved documentation, thanks to Nathan Willis. +- Misc shaping fixes. + + +Overview of changes leading to 2.4.0 +Monday, March 25, 2019 +==================================== +- Unicode 12. +- Misc fixes. +- Subsetter improvements. +- New API: +HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE +hb_directwrite_face_create() + + +Overview of changes leading to 2.3.1 +Wednesday, January 30, 2019 +==================================== +- AAT bug fixes. +- Misc internal housekeeping cleanup. + + +Overview of changes leading to 2.3.0 +Thursday, December 20, 2018 +==================================== +- Fix regression on big-endian architectures. Ouch! +- Misc bug and build fixes. +- Fix subsetting of simple GSUB/GDEF. +- Merge CFF / CFF2 support contributed by Adobe. This mostly involves + the subsetter, but also get_glyph_extents on CFF fonts. + +New API in hb-aat.h: ++hb_aat_layout_has_substitution() ++hb_aat_layout_has_positioning() ++hb_aat_layout_has_tracking() + + +Overview of changes leading to 2.2.0 +Thursday, November 29, 2018 +==================================== +- Misc shaping bug fixes. +- Add font variations named-instance API. +- Deprecate font variations axis enumeration API and add replacement. +- AAT shaping improvements: + o Fixed 'kern' table Format 2 implementation. + o Implement 'feat' table API for feature detection. + o Blacklist 'GSUB' table of fonts from 'MUTF' foundry that also have 'morx'. + +New API: ++hb_aat_layout_feature_type_t ++hb_aat_layout_feature_selector_t ++hb_aat_layout_get_feature_types() ++hb_aat_layout_feature_type_get_name_id ++hb_aat_layout_feature_selector_info_t ++HB_AAT_LAYOUT_NO_SELECTOR_INDEX ++hb_aat_layout_feature_type_get_selector_infos() ++hb_ot_var_axis_flags_t ++hb_ot_var_axis_info_t ++hb_ot_var_get_axis_infos() ++hb_ot_var_find_axis_info() ++hb_ot_var_get_named_instance_count() ++hb_ot_var_named_instance_get_subfamily_name_id() ++hb_ot_var_named_instance_get_postscript_name_id() ++hb_ot_var_named_instance_get_design_coords() + +Deprecated API: ++HB_OT_VAR_NO_AXIS_INDEX ++hb_ot_var_axis_t ++hb_ot_var_get_axes() ++hb_ot_var_find_axis() + + +Overview of changes leading to 2.1.3 +Friday, November 16, 2018 +==================================== +- Fix AAT 'mort' shaping, which was broken in 2.1.2 + + +Overview of changes leading to 2.1.2 +Friday, November 16, 2018 +==================================== +- Various internal changes. +- AAT shaping improvements: + o Implement kern table Format 1 state-machine-based kerning. + o Implement cross-stream kerning (cursive positioning, etc). + o Ignore emptyish GSUB tables (zero scripts) if morx present. + o Don't apply GPOS if morx is being applied. Matches Apple. + + +-Overview of changes leading to 2.1.1 +Monday, November 5, 2018 +==================================== +- AAT improvements: + o Implement 'mort' table. + o Implement 'kern' subtables Format 1 and Format 3. + + +Overview of changes leading to 2.1.0 +Tuesday, October 30, 2018 +==================================== +- AAT shaping improvements: + o Allow user controlling AAT features, for whole buffer only currently. + o Several 'morx' fixes. + o Implement tuple-kerns in 'kerx'; Fixes kerning with Apple default + San Francisco fonts. +- Support for color fonts: + o COLR/CPAL API to fetch color layers. + o SVG table to fetch SVG documents. + o CBDT/sbix API to fetch PNG images. +- New 'name' table API. +- hb-ot-font now uses 'VORG' table to correctly position CFF glyphs + in vertical layout. +- Various fuzzer-found bug fixes. + +Changed API: + +A type and a macro added in 2.0.0 were renamed: + +hb_name_id_t -> hb_ot_name_id_t +HB_NAME_ID_INVALID -> HB_OT_NAME_ID_INVALID + +New API: + ++hb_color_t ++HB_COLOR ++hb_color_get_alpha() ++hb_color_get_red() ++hb_color_get_green() ++hb_color_get_blue() ++hb_ot_color_has_palettes() ++hb_ot_color_palette_get_count() ++hb_ot_color_palette_get_name_id() ++hb_ot_color_palette_color_get_name_id() ++hb_ot_color_palette_flags_t ++hb_ot_color_palette_get_flags() ++hb_ot_color_palette_get_colors() ++hb_ot_color_has_layers() ++hb_ot_color_layer_t ++hb_ot_color_glyph_get_layers() ++hb_ot_color_has_svg() ++hb_ot_color_glyph_reference_svg() ++hb_ot_color_has_png() ++hb_ot_color_glyph_reference_png() + ++hb_ot_name_id_t ++HB_OT_NAME_ID_INVALID ++HB_OT_NAME_ID_COPYRIGHT ++HB_OT_NAME_ID_FONT_FAMILY ++HB_OT_NAME_ID_FONT_SUBFAMILY ++HB_OT_NAME_ID_UNIQUE_ID ++HB_OT_NAME_ID_FULL_NAME ++HB_OT_NAME_ID_VERSION_STRING ++HB_OT_NAME_ID_POSTSCRIPT_NAME ++HB_OT_NAME_ID_TRADEMARK ++HB_OT_NAME_ID_MANUFACTURER ++HB_OT_NAME_ID_DESIGNER ++HB_OT_NAME_ID_DESCRIPTION ++HB_OT_NAME_ID_VENDOR_URL ++HB_OT_NAME_ID_DESIGNER_URL ++HB_OT_NAME_ID_LICENSE ++HB_OT_NAME_ID_LICENSE_URL ++HB_OT_NAME_ID_TYPOGRAPHIC_FAMILY ++HB_OT_NAME_ID_TYPOGRAPHIC_SUBFAMILY ++HB_OT_NAME_ID_MAC_FULL_NAME ++HB_OT_NAME_ID_SAMPLE_TEXT ++HB_OT_NAME_ID_CID_FINDFONT_NAME ++HB_OT_NAME_ID_WWS_FAMILY ++HB_OT_NAME_ID_WWS_SUBFAMILY ++HB_OT_NAME_ID_LIGHT_BACKGROUND ++HB_OT_NAME_ID_DARK_BACKGROUND ++HB_OT_NAME_ID_VARIATIONS_PS_PREFIX ++hb_ot_name_entry_t ++hb_ot_name_list_names() ++hb_ot_name_get_utf8() ++hb_ot_name_get_utf16() ++hb_ot_name_get_utf32() + + +Overview of changes leading to 2.0.2 +Saturday, October 20, 2018 +==================================== +- Fix two minor memory access issues in AAT tables. + + +Overview of changes leading to 2.0.1 +Friday, October 19, 2018 +==================================== +- Fix hb-version.h reported release version that went wrong (1.8.0) + with previous release. +- Fix extrapolation in 'trak' table. +- Fix hb-font infinite-recursion issue with some font funcs and + subclassed fonts. +- Implement variation-kerning format in kerx table, although without + variation. +- Fix return value of hb_map_is_empty(). + + +Overview of changes leading to 2.0.0 +Thursday, October 18, 2018 +==================================== +- Added AAT shaping support (morx/kerx/trak). + Automatically used if GSUB/GPOS are not available respectively. + Set HB_OPTIONS=aat env var to have morx/kerx preferred over + GSUB/GPOS. +- Apply TrueType kern table internally, instead of relying on + hb_font_t callbacks. +- Khmer shaper significantly rewritten to better match Uniscribe. +- Indic3 tags ('dev3', etc) are passed to USE shaper. +- .dfont Mac font containers implemented. +- Script- and language-mapping revamped to better use BCP 47. +- Misc USE and Indic fixes. +- Misc everything fixes. +- Too many things to list. Biggest release since 0.9.1, with + over 500 commits in just over 5 weeks! Didn't intend it to + be a big release. Just happened to become. +- hb-ft now locks underlying FT_Face during use. + +API changes: + +- Newly-created hb_font_t's now have our internal "hb-ot-font" + callbacks set on them, so they should work out of the box + without any callbacks set. If callbacks are set, everything + is back to what it was before, the fallback callbacks are + null. If you to get the internal implementation modified, + sub_font it. + +- New hb_font_funcs_set_nominal_glyphs_func() allows speeding + up character to glyph mapping. + +New API: ++HB_FEATURE_GLOBAL_START ++HB_FEATURE_GLOBAL_END ++hb_buffer_set_invisible_glyph() ++hb_buffer_get_invisible_glyph() ++hb_font_funcs_set_nominal_glyphs_func() ++hb_ot_layout_table_select_script() ++hb_ot_layout_script_select_language() ++hb_ot_layout_feature_get_name_ids() ++hb_ot_layout_feature_get_characters() ++hb_name_id_t ++HB_NAME_ID_INVALID ++HB_OT_MAX_TAGS_PER_SCRIPT ++hb_ot_tags_from_script_and_language() ++hb_ot_tags_to_script_and_language() + +Deprecated API: +-hb_font_funcs_set_glyph_func() +-hb_unicode_eastasian_width_func_t +-hb_unicode_funcs_set_eastasian_width_func() +-hb_unicode_eastasian_width() +-hb_unicode_decompose_compatibility_func_t +-HB_UNICODE_MAX_DECOMPOSITION_LEN +-hb_unicode_funcs_set_decompose_compatibility_func() +-hb_unicode_decompose_compatibility() +-hb_font_funcs_set_glyph_h_kerning_func() +-hb_font_funcs_set_glyph_v_kerning_func() +-hb_font_get_glyph_h_kerning() +-hb_font_get_glyph_v_kerning() +-hb_font_get_glyph_kerning_for_direction() +-hb_ot_layout_table_choose_script() +-hb_ot_layout_script_find_language() +-hb_ot_tags_from_script() +-hb_ot_tag_from_language() + + +Overview of changes leading to 1.9.0 +Monday, September 10, 2018 +==================================== +- Added 'cmap' API to hb_face_t. +- Face-builder API. +- hb-ot-font re-creation should be much leaner now, as the + font tables it uses are cached on hb_face_t now. +- Internal source header file name changes: + hb-*-private.hh is renamed to hb-*.hh. + +New API: ++HB_UNICODE_MAX ++hb_face_collect_unicodes() ++hb_face_collect_variation_selectors() ++hb_face_collect_variation_unicodes() ++hb_face_builder_create() ++hb_face_builder_add_table() + + +Overview of changes leading to 1.8.8 +Tuesday, August 14, 2018 +==================================== +- Fix hb-icu crash on architectures where compare_exchange_weak() can + fail falsely. This bug was introduced in 1.8.4. + https://bugs.chromium.org/p/chromium/issues/detail?id=873568 +- More internal refactoring of atomic operations and singletons. +- API changes: + The following functions do NOT reference their return value before + returning: + * hb_unicode_funcs_get_default() + * hb_glib_get_unicode_funcs() + * hb_icu_get_unicode_funcs() + This is consistent with their naming ("get", instead of "reference") + as well as how they are used in the wild (ie. no one calls destroy() + on their return value.) + + +Overview of changes leading to 1.8.7 +Wednesday, August 8, 2018 +==================================== +- Fix assertion failure with GDEF-blacklisted fonts. + + +Overview of changes leading to 1.8.6 +Tuesday, August 7, 2018 +==================================== +- Internal code shuffling. +- New API to speed up getting advance widths for implementations + that have heavy overhead in get_h_advance callback: ++hb_font_funcs_set_glyph_h_advances_func ++hb_font_funcs_set_glyph_v_advances_func ++hb_font_get_glyph_advances_for_direction ++hb_font_get_glyph_h_advances ++hb_font_get_glyph_h_advances_func_t ++hb_font_get_glyph_v_advances ++hb_font_get_glyph_v_advances_func_t + + +Overview of changes leading to 1.8.5 +Wednesday, August 1, 2018 +==================================== +- Major Khmer shaper improvements to better match Microsoft. +- Indic bug fixes. +- Internal improvements to atomic operations. + + +Overview of changes leading to 1.8.4 +Tuesday, July 17, 2018 +==================================== +- Fix build on non-C++11. +- Use C++-style GCC atomics and C++11 atomics. + + +Overview of changes leading to 1.8.3 +Wednesday, July 11, 2018 +==================================== +- A couple of Indic / USE bug fixes. +- Disable vectorization, as it was causing unaligned access bus error on + certain 32bit architectures. + + +Overview of changes leading to 1.8.2 +Tuesday, July 3, 2018 +==================================== +- Fix infinite loop in Khmer shaper. +- Improve hb_blob_create_from_file() for streams. + + +Overview of changes leading to 1.8.1 +Tuesday, June 12, 2018 +==================================== +- Fix hb-version.h file generation; last two releases went out with wrong ones. +- Add correctness bug in hb_set_t operations, introduced in 1.7.7. +- Remove HB_SUBSET_BUILTIN build option. Not necessary. + + +Overview of changes leading to 1.8.0 +Tuesday, June 5, 2018 +==================================== +- Update to Unicode 11.0.0. + + +Overview of changes leading to 1.7.7 +Tuesday, June 5, 2018 +==================================== +- Lots of internal changes, but not yet exposed externally. +- All HarfBuzz objects are significantly smaller in size now. +- Sinhala: Position repha on top of post-consonant, not base. + This better matches Windows 10 behavior, which was changed + from previous Windows versions. +- New build options: + o New cpp macro HB_NO_ATEXIT + o New cpp macro HB_SUBSET_BUILTIN +- Significant libharfbuzz-subset changes. API subject to change. +- New API in libharfbuzz: + ++hb_blob_create_from_file() ++hb_face_count() + +A hashmap implementation: ++hb-map.h ++HB_MAP_VALUE_INVALID ++hb_map_t ++hb_map_create() ++hb_map_get_empty() ++hb_map_reference() ++hb_map_destroy() ++hb_map_set_user_data() ++hb_map_get_user_data() ++hb_map_allocation_successful() ++hb_map_clear() ++hb_map_is_empty() ++hb_map_get_population() ++hb_map_set() ++hb_map_get() ++hb_map_del() ++hb_map_has() + + +Overview of changes leading to 1.7.6 +Wednesday, March 7, 2018 +==================================== + +- Fix to hb_set_t binary operations. Ouch. +- New experimental harfbuzz-subset library. All of hb-subset.h + is experimental right now and API WILL change. + +- New API: +hb_blob_copy_writable_or_fail() +HB_OT_TAG_BASE +hb_set_previous() +hb_set_previous_range() + + +Overview of changes leading to 1.7.5 +Tuesday, January 30, 2018 +==================================== + +- Separate Khmer shaper from Indic. +- First stab at AAT morx. Not hooked up. +- Misc bug fixes. + + +Overview of changes leading to 1.7.4 +Wednesday, December 20, 2017 +==================================== + +- Fix collect_glyphs() regression caused by hb_set_t changes. + + +Overview of changes leading to 1.7.3 +Monday, December 18, 2017 +==================================== + +- hb_set_t performance tuning and optimizations. +- Speed up collect_glyphs() and reject garbage data. +- In hb_coretext_font_create() set font point-size (ptem). +- Misc fixes. + + +Overview of changes leading to 1.7.2 +Monday, December 4, 2017 +==================================== + +- Optimize hb_set_add_range(). +- Misc fixes. +- New API: +hb_coretext_font_create() + + +Overview of changes leading to 1.7.1 +Tuesday, November 14, 2017 +==================================== + +- Fix atexit object destruction regression. +- Fix minor integer-overflow. + + +Overview of changes leading to 1.7.0 +Monday, November 13, 2017 +==================================== + +- Minor Indic fixes. +- Implement kerning and glyph names in hb-ot-font. +- Various DSO optimization re .data and .bss sizes. +- Make C++11 optional; build fixes. +- Mark all other backends "unsafe-to-break". +- Graphite fix. + + +Overview of changes leading to 1.6.3 +Thursday, October 26th, 2017 +==================================== + +- Fix hb_set_t some more. Should be solid now. +- Implement get_glyph_name() for hb-ot-font. +- Misc fixes. + + +Overview of changes leading to 1.6.2 +Monday, October 23nd, 2017 +==================================== + +- Yesterday's release had a bad crasher; don't use it. That's what + happens when one works on Sunday... + https://github.com/harfbuzz/harfbuzz/issues/578 +- Build fixes for FreeBSD and Chrome Android. + + +Overview of changes leading to 1.6.1 +Sunday, October 22nd, 2017 +==================================== + +- Don't skip over COMBINING GRAPHEME JOINER when ligating, etc. + To be refined: https://github.com/harfbuzz/harfbuzz/issues/554 +- Faster hb_set_t implementation. +- Don't use deprecated ICU API. +- Fix undefined-behavior in Myanmar shaper, introduced in 1.6.0 +- Deprecated API: + hb_set_invert() + + +Overview of changes leading to 1.6.0 +Friday, October the 13th, 2017 +==================================== + +- Update to Unicode 10. + +- Various Indic and Universal Shaping Engine fixes as a result of + HarfBuzz Hackfest with Jonathan Kew at Web Engines Hackfest at + the Igalia offices in A Coruña, Spain. Thanks Igalia for having + us! + +- Implement Unicode Arabic Mark Ordering Algorithm UTR#53. + +- Implement optical sizing / tracking in CoreText backend, using + new API hb_font_set_ptem(). + +- Allow notifying hb_font_t that underlying FT_Face changed sizing, + using new API hb_ft_font_changed(). + +- More Graphite backend RTL fixes. + +- Fix caching of variable font shaping plans. + +- hb-view / hb-shape now accept following new arguments: + + o --unicodes: takes a list of hex numbers that represent Unicode + codepoints. + +New API: ++hb_face_get_table_tags() ++hb_font_set_ptem() ++hb_font_get_ptem() ++hb_ft_font_changed() + + +Overview of changes leading to 1.5.1 +Tuesday, September 5, 2017 +==================================== + +- Fix "unsafe-to-break" in fallback shaping and other corner cases. + All our tests pass with --verify now, meaning unsafe-to-break API + works as expected. +- Add --unicodes to hb-view / hb-shape. +- [indic] Treat Consonant_With_Stacker as consonant. This will need + further tweaking. +- hb_buffer_diff() tweaks. + + +Overview of changes leading to 1.5.0 +Wednesday, August 23, 2017 +==================================== + +- Misc new API, for appending a buffer to another, and for comparing + contents of two buffers for types of differences. + +- New "unsafe-to-break" API. Can be used to speed up reshaping + in line-breaking situations. Essentially, after shaping, it returns + positions in the input string (some of the cluster boundaries) that + are "safe to break" in that if the text is segmented at that position + and two sides reshaped and concatenated, the shaping result is + exactly the same as shaping the text in one piece. + + hb-view and hb-shape and hb-shape now take --verify, which verifies + the above property. + + Some corner cases of the implementation are still not quite working. + Those will be fixed in subsequent releases. + +- New API: + +hb_buffer_append() + +hb_glyph_flags_t +HB_GLYPH_FLAG_UNSAFE_TO_BREAK +HB_GLYPH_FLAG_DEFINED +hb_glyph_info_get_glyph_flags() + +HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS + +hb_buffer_diff_flags_t +HB_BUFFER_DIFF_FLAG_EQUAL +HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH +HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH +HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT +HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT +HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH +HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH +HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH +HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH +hb_buffer_diff + + +Overview of changes leading to 1.4.8 +Tuesday, August 8, 2017 +==================================== + +- Major fix to avar table handling. +- Rename hb-shape --show-message to --trace. +- Build fixes. + + +Overview of changes leading to 1.4.7 +Tuesday, July 18, 2017 +==================================== + +- Multiple Indic, Tibetan, and Cham fixes. +- CoreText: Allow disabling kerning. +- Adjust Arabic feature order again. +- Misc build fixes. + + +Overview of changes leading to 1.4.6 +Sunday, April 23, 2017 +==================================== + +- Graphite2: Fix RTL positioning issue. +- Backlist GDEF of more versions of Padauk and Tahoma. +- New, experimental, cmake alternative build system. + + +Overview of changes leading to 1.4.5 +Friday, March 10, 2017 +==================================== + +- Revert "Fix Context lookup application when moving back after a glyph..." + This introduced memory access problems. To be fixed properly soon. + + +Overview of changes leading to 1.4.4 +Sunday, March 5, 2017 +==================================== + +- Fix Context lookup application when moving back after a glyph deletion. +- Fix buffer-overrun in Bengali. + + +Overview of changes leading to 1.4.3 +Saturday, February 25, 2017 +==================================== + +- Route Adlam script to Arabic shaper. +- Misc fixes. +- New API: + hb_font_set_face() +- Deprecate API: + hb_graphite2_font_get_gr_font() + + +Overview of changes leading to 1.4.2 +Monday, January 23, 2017 +==================================== + +- Implement OpenType Font Variation tables avar/fvar/HVAR/VVAR. +- hb-shape and hb-view now accept --variations. +- New API: + +hb_variation_t +hb_variation_from_string() +hb_variation_to_string() + +hb_font_set_variations() +hb_font_set_var_coords_design() +hb_font_get_var_coords_normalized() + +hb-ot-var.h: +hb_ot_var_axis_t +hb_ot_var_has_data() +hb_ot_var_get_axis_count() +hb_ot_var_get_axes() +hb_ot_var_find_axis() +hb_ot_var_normalize_variations() +hb_ot_var_normalize_coords() + +- MVAR to be implemented later. Access to named instances to be + implemented later as well. + +- Misc fixes. + + +Overview of changes leading to 1.4.1 +Thursday, January 5, 2017 +==================================== + +- Always build and use UCDN for Unicode data by default. + Reduces dependence on version of Unicode data in glib, + specially in the Windows bundles we are shipping, which + have very old glib. + + +Overview of changes leading to 1.4.0 +Thursday, January 5, 2017 +==================================== + +- Merged "OpenType GX" branch which adds core of support for + OpenType 1.8 Font Variations. To that extent, the relevant + new API is: + +New API: +hb_font_set_var_coords_normalized() + + with supporting API: + +New API: +HB_OT_LAYOUT_NO_VARIATIONS_INDEX +hb_ot_layout_table_find_feature_variations() +hb_ot_layout_feature_with_variations_get_lookups() +hb_shape_plan_create2() +hb_shape_plan_create_cached2() + + Currently variations in GSUB/GPOS/GDEF are fully supported, + and no other tables are supported. In particular, fvar/avar + are NOT supported, hence the hb_font_set_var_coords_normalized() + taking normalized coordinates. API to take design coordinates + will be added in the future. + + HVAR/VVAR/MVAR support will also be added to hb-ot-font in the + future. + +- Fix regression in GDEF glyph class processing. +- Add decompositions for Chakma, Limbu, and Balinese in USE shaper. +- Misc fixes. + + +Overview of changes leading to 1.3.4 +Monday, December 5, 2016 +==================================== + +- Fix vertical glyph origin in hb-ot-font. +- Implement CBDT/CBLC color font glyph extents in hb-ot-font. + + +Overview of changes leading to 1.3.3 +Wednesday, September 28, 2016 +==================================== + +- Implement parsing of OpenType MATH table. +New API: +HB_OT_TAG_MATH +HB_OT_MATH_SCRIPT +hb_ot_math_constant_t +hb_ot_math_kern_t +hb_ot_math_glyph_variant_t +hb_ot_math_glyph_part_flags_t +hb_ot_math_glyph_part_t +hb_ot_math_has_data +hb_ot_math_get_constant +hb_ot_math_get_glyph_italics_correction +hb_ot_math_get_glyph_top_accent_attachment +hb_ot_math_get_glyph_kerning +hb_ot_math_is_glyph_extended_shape +hb_ot_math_get_glyph_variants +hb_ot_math_get_min_connector_overlap +hb_ot_math_get_glyph_assembly + + +Overview of changes leading to 1.3.2 +Wednesday, September 27, 2016 +==================================== + +- Fix build of hb-coretext on older OS X versions. + + +Overview of changes leading to 1.3.1 +Wednesday, September 7, 2016 +==================================== + +- Blacklist bad GDEF of more fonts (Padauk). +- More CoreText backend crash fixes with OS X 10.9.5. +- Misc fixes. + + +Overview of changes leading to 1.3.0 +Thursday, July 21, 2016 +==================================== + +- Update to Unicode 9.0.0 +- Move Javanese from Indic shaper to Universal Shaping Engine. +- Allow MultipleSubst to delete a glyph (matching Windows engine). +- Update Universal Shaping Engine to latest draft from Microsoft. +- DirectWrite backend improvements. Note: this backend is for testing ONLY. +- CoreText backend improvements with unreachable fonts. +- Implement symbol fonts (cmap 3.0.0) in hb-ft and hb-ot-font. +- Blacklist bad GDEF of more fonts (Tahoma & others). +- Misc fixes. + + +Overview of changes leading to 1.2.7 +Monday, May 2, 2016 +==================================== + +- Blacklist another version of Times New Roman (Bold) Italic from Windows 7. +- Fix Mongolian Free Variation Selectors shaping with certain fonts. +- Fix Tibetan shorthand contractions shaping. +- Improved list of language tag mappings. +- Unbreak build on Windows CE. +- Make 'glyf' table loading lazy in hb-ot-font. + + +Overview of changes leading to 1.2.6 +Friday, April 8, 2016 +==================================== + +- Blacklist GDEF table of another set of Times New Roman (Bold) Italic. +- DirectWrite backend improvements. Note: DirectWrite backend is + exclusively for our internal testing and should NOT be used in any + production system whatsoever. + + +Overview of changes leading to 1.2.5 +Monday, April 4, 2016 +==================================== + +- Fix GDEF mark-filtering-set, which was broken in 1.2.3. + + +Overview of changes leading to 1.2.4 +Thursday, March 17, 2016 +==================================== + +- Synthesize GDEF glyph class for any glyph that does not have one in GDEF. + I really hope we don't discover broken fonts that shape badly with this + change. +- Misc build and other minor fixes. +- API changes: + - Added HB_NDEBUG. It's fine for production systems to define this to + disable high-overhead debugging checks. However, I also reduced the + overhead of those checks, so it's a non-issue right now. You can + forget it. Just not defining anything at all is fine. + + +Overview of changes leading to 1.2.3 +Thursday, February 25, 2016 +==================================== + +- Blacklist GDEF table of certain versions of Times New Roman (Bold) Italic, + due to bug in glyph class of ASCII double-quote character. This should + address "regression" introduced in 1.2.0 when we switched mark zeroing + in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE. + This fourth release in a week should finally stabilize things... + +- hb-ot-font's get_glyph() implementation saw some optimizations. Though, + might be really hard to measure in real-world situations. + +- Also, two rather small API changes: + +We now disable some time-consuming internal bookkeeping if built with NDEBUG +defined. This is a first time that we use NDEBUG to disable debug code. If +there exist production systems that do NOT want to enable NDEBUG, please let +me know and I'll add HB_NDEBUG. + +Added get_nominal_glyph() and get_variation_glyph() instead of get_glyph() + +New API: +- hb_font_get_nominal_glyph_func_t +- hb_font_get_variation_glyph_func_t +- hb_font_funcs_set_nominal_glyph_func() +- hb_font_funcs_set_variation_glyph_func() +- hb_font_get_nominal_glyph() +- hb_font_get_variation_glyph() + +Deprecated API: +- hb_font_get_glyph_func_t +- hb_font_funcs_set_glyph_func() + +Clients that implement their own font-funcs are encouraged to replace +their get_glyph() implementation with a get_nominal_glyph() and +get_variation_glyph() pair. The variation version can assume that +variation_selector argument is not zero. Old (deprecated) functions +will continue working indefinitely using internal gymnastics; it is +just more efficient to use the new functions. + + +Overview of changes leading to 1.2.2 +Wednesday, February 24, 2016 +==================================== + +- Fix regression with mark positioning with fonts that have + non-zero mark advances. This was introduced in 1.2.0 while + trying to make mark and cursive attachments to work together. + I have partially reverted that, so this version is much more + like what we had before. All clients who updated to 1.2.0 + should update to this version. + + +Overview of changes leading to 1.2.1 +Tuesday, February 23, 2016 +==================================== + +- CoreText: Fix bug with wrong scale if font scale was changed later. + https://github.com/libass/libass/issues/212 +- CoreText: Drastically speed up font initialization. +- CoreText: Fix tiny leak. +- Group ZWJ/ZWNJ with previous syllable under cluster-level=0. + https://github.com/harfbuzz/harfbuzz/issues/217 +- Add test/shaping/README.md about how to add tests to the suite. + + +Overview of changes leading to 1.2.0 +Friday, February 19, 2016 +==================================== + +- Fix various issues (hangs mostly) in case of memory allocation failure. +- Change mark zeroing types of most shapers from BY_UNICODE_LATE to + BY_GDEF_LATE. This seems to be what Uniscribe does. +- Change mark zeroing of USE shaper from NONE to BY_GDEF_EARLY. That's + what Windows does. +- Allow GPOS cursive connection on marks, and fix the interaction with + mark attachment. This work resulted in some changes to how mark + attachments work. See: + https://github.com/harfbuzz/harfbuzz/issues/211 + https://github.com/harfbuzz/harfbuzz/commit/86c68c7a2c971efe8e35b1f1bd99401dc8b688d2 +- Graphite2 shaper: improved negative advance handling (eg. Nastaliq). +- Add nmake-based build system for Windows. +- Minor speedup. +- Misc. improvements. + + +Overview of changes leading to 1.1.3 +Monday, January 11, 2016 +==================================== + +- Ported Indic shaper to Unicode 8.0 data. +- Universal Shaping Engine fixes. +- Speed up CoreText shaper when font fallback happens in CoreText. +- Documentation improvements, thanks to Khaled Hosny. +- Very rough directwrite shaper for testing, thanks to Ebrahim Byagowi. +- Misc bug fixes. +- New API: + + * Font extents: + hb_font_extents_t + hb_font_get_font_extents_func_t + hb_font_get_font_h_extents_func_t + hb_font_get_font_v_extents_func_t + hb_font_funcs_set_font_h_extents_func + hb_font_funcs_set_font_v_extents_func + hb_font_get_h_extents + hb_font_get_v_extents + hb_font_get_extents_for_direction + + * Buffer message (aka debug): + hb_buffer_message_func_t + hb_buffer_set_message_func() + Actual message protocol to be fleshed out later. + + +Overview of changes leading to 1.1.2 +Wednesday, November 26, 2015 +==================================== + +- Fix badly-broken fallback shaper that affected terminology. + https://github.com/harfbuzz/harfbuzz/issues/187 +- Fix y_scaling in Graphite shaper. +- API changes: + * An unset glyph_h_origin() function in font-funcs now (sensibly) + implies horizontal origin at 0,0. Ie, the nil callback returns + true instead of false. As such, implementations that have a + glyph_h_origin() that simply returns true, can remove that function + with HarfBuzz >= 1.1.2. This results in a tiny speedup. + + +Overview of changes leading to 1.1.1 +Wednesday, November 24, 2015 +==================================== + +- Build fixes, specially for hb-coretext. + + +Overview of changes leading to 1.1.0 +Wednesday, November 18, 2015 +==================================== + +- Implement 'stch' stretch feature for Syriac Abbreviation Mark. + https://github.com/harfbuzz/harfbuzz/issues/141 +- Disable use of decompose_compatibility() callback. +- Implement "shaping" of various Unicode space characters, even + if the font does not support them. + https://github.com/harfbuzz/harfbuzz/issues/153 +- If font does not support U+2011 NO-BREAK HYPHEN, fallback to + U+2010 HYPHEN. +- Changes resulting from libFuzzer continuous fuzzing: + * Reject font tables that need more than 8 edits, + * Bound buffer growth during shaping to 32x, + * Fix assertions and other issues at OOM / buffer max-growth. +- Misc fixes and optimizations. +- API changes: + * All fonts created with hb_font_create() now inherit from + (ie. have parent) hb_font_get_empty(). + + +Overview of changes leading to 1.0.6 +Thursday, October 15, 2015 +==================================== + +- Reduce max nesting level in OT lookups from 8 to 6. + Should not affect any real font as far as I know. +- Fix memory access issue in ot-font. +- Revert default load-flags of fonts created using hb_ft_font_create() + back to FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING. This was changed in + last release (1.0.5), but caused major issues, so revert. + https://github.com/harfbuzz/harfbuzz/issues/143 + + +Overview of changes leading to 1.0.5 +Tuesday, October 13, 2015 +==================================== + +- Fix multiple memory access bugs discovered using libFuzzer. + https://github.com/harfbuzz/harfbuzz/issues/139 + Everyone should upgrade to this version as soon as possible. + We now have continuous fuzzing set up, to avoid issues like + these creeping in again. +- Misc fixes. + +- New API: + * hb_font_set_parent(). + * hb_ft_font_[sg]et_load_flags() + The default flags for fonts created using hb_ft_font_create() + has changed to default to FT_LOAD_DEFAULT now. Previously it + was defaulting to FT_LOAD_DFEAULT|FT_LOAD_NO_HINTING. + +- API changes: + * Fonts now default to units-per-EM as their scale, instead of 0. + * hb_font_create_sub_font() does NOT make parent font immutable + anymore. hb_font_make_immutable() does. + + +Overview of changes leading to 1.0.4 +Wednesday, September 30, 2015 +==================================== + +- Fix minor out-of-bounds read error. + + +Overview of changes leading to 1.0.3 +Tuesday, September 1, 2015 +==================================== + +- Start of user documentation, from Simon Cozens! +- Implement glyph_extents() for TrueType fonts in hb-ot-font. +- Improve GPOS cursive attachments with conflicting lookups. +- More fixes for cluster-level = 1. +- Uniscribe positioning fix. + + +Overview of changes leading to 1.0.2 +Wednesday, August 19, 2015 +==================================== + +- Fix shaping with cluster-level > 0. +- Fix Uniscribe backend font-size scaling. +- Declare dependencies in harfbuzz.pc. + FreeType is not declared though, to avoid bugs in pkg-config + 0.26 with recursive dependencies. +- Slightly improved debug infrastructure. More to come later. +- Misc build fixes. + + +Overview of changes leading to 1.0.1 +Monday, July 27, 2015 +==================================== + +- Fix out-of-bounds access in USE shaper. + + +Overview of changes leading to 1.0.0 +Sunday, July 26, 2015 +==================================== + +- Implement Universal Shaping Engine: + https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm + http://blogs.windows.com/bloggingwindows/2015/02/23/windows-shapes-the-worlds-languages/ +- Bump version to 1.0.0. The soname was NOT bumped. + + +Overview of changes leading to 0.9.42 +Thursday, July 26, 2015 +===================================== + +- New API to allow for retrieving finer-grained cluster + mappings if the client desires to handle them. Default + behavior is unchanged. +- Fix cluster merging when removing default-ignorables. +- Update to Unicode 8.0 +- hb-graphite2 fixes. +- Misc fixes. +- Removed HB_NO_MERGE_CLUSTERS hack. +- New API: + hb_buffer_cluster_level_t enum + hb_buffer_get_cluster_level() + hb_buffer_set_cluster_level() + hb-shape / hb-view --cluster-level + + +Overview of changes leading to 0.9.41 +Thursday, June 18, 2015 +===================================== + +- Fix hb-coretext with trailing whitespace in right-to-left. +- New API: hb_buffer_reverse_range(). +- Allow implementing atomic ops in config.h. +- Fix hb_language_t in language bindings. +- Misc fixes. + + +Overview of changes leading to 0.9.40 +Friday, March 20, 2015 +===================================== + +- Another hb-coretext crasher fix. Ouch! +- Happy Norouz! + + +Overview of changes leading to 0.9.39 +Wednesday, March 4, 2015 +===================================== + +- Critical hb-coretext fixes. +- Optimizations and refactoring; no functional change + expected. +- Misc build fixes. + + +Overview of changes leading to 0.9.38 +Friday, January 23, 2015 +===================================== + +- Fix minor out-of-bounds access in Indic shaper. +- Change New Tai Lue shaping engine from South-East Asian to default, + reflecting change in Unicode encoding model. +- Add hb-shape --font-size. Can take up to two numbers for separate + x / y size. +- Fix CoreText and FreeType scale issues with negative scales. +- Reject blobs larger than 2GB. This might break some icu-le-hb clients + that need security fixes. See: + http://www.icu-project.org/trac/ticket/11450 +- Avoid accessing font tables during face destruction, in casce rogue + clients released face data already. +- Fix up gobject-introspection a bit. Python bindings kinda working. + See README.python. +- Misc fixes. +- API additions: + hb_ft_face_create_referenced() + hb_ft_font_create_referenced() + + +Overview of changes leading to 0.9.37 +Wednesday, December 17, 2014 +===================================== + +- Fix out-of-bounds access in Context lookup format 3. +- Indic: Allow ZWJ/ZWNJ before syllable modifiers. + + +Overview of changes leading to 0.9.36 +Thursday, November 20, 2014 +===================================== + +- First time that three months went by without a release since + 0.9.2 was released on August 10, 2012! +- Fix performance bug in hb_ot_collect_glyphs(): + https://bugzilla.mozilla.org/show_bug.cgi?id=1090869 +- Add basic vertical-text support to hb-ot-font. +- Misc build fixes. + + +Overview of changes leading to 0.9.35 +Saturday, August 13, 2014 +===================================== + +- Fix major shape-plan caching bug when more than one shaper were + provided to hb_shape_full() (as exercised by XeTeX). + http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1246370.html +- Fix Arabic fallback shaping regression. This was broken in 0.9.32. +- Major hb-coretext fixes. That backend is complete now, including + respecing buffer direction and language, down to vertical writing. +- Build fixes for Windows CE. Should build fine now. +- Misc fixes: + Use atexit() only if it's safe to call from shared library + https://bugs.freedesktop.org/show_bug.cgi?id=82246 + Mandaic had errors in its Unicode Joining_Type + https://bugs.freedesktop.org/show_bug.cgi?id=82306 +- API changes: + + * hb_buffer_clear_contents() does not reset buffer flags now. + + After 763e5466c0a03a7c27020e1e2598e488612529a7, one doesn't + need to set flags for different pieces of text. The flags now + are something the client sets up once, depending on how it + actually uses the buffer. As such, don't clear it in + clear_contents(). + + I don't expect any changes to be needed to any existing client. + + +Overview of changes leading to 0.9.34 +Saturday, August 2, 2014 +===================================== + +- hb_feature_from_string() now accepts CSS font-feature-settings format. +- As a result, hb-shape / hb-view --features also accept CSS-style strings. + Eg, "'liga' off" is accepted now. +- Add old-spec Myanmar shaper: + https://bugs.freedesktop.org/show_bug.cgi?id=81775 +- Don't apply 'calt' in Hangul shaper. +- Fix mark advance zeroing for Hebrew shaper: + https://bugs.freedesktop.org/show_bug.cgi?id=76767 +- Implement Windows-1256 custom Arabic shaping. Only built on Windows, + and requires help from get_glyph(). Used by Firefox. + https://bugzilla.mozilla.org/show_bug.cgi?id=1045139 +- Disable 'liga' in vertical text. +- Build fixes. +- API changes: + + * Make HB_BUFFER_FLAG_BOT/EOT easier to use. + + Previously, we expected users to provide BOT/EOT flags when the + text *segment* was at paragraph boundaries. This meant that for + clients that provide full paragraph to HarfBuzz (eg. Pango), they + had code like this: + + hb_buffer_set_flags (hb_buffer, + (item_offset == 0 ? HB_BUFFER_FLAG_BOT : 0) | + (item_offset + item_length == paragraph_length ? + HB_BUFFER_FLAG_EOT : 0)); + + hb_buffer_add_utf8 (hb_buffer, + paragraph_text, paragraph_length, + item_offset, item_length); + + After this change such clients can simply say: + + hb_buffer_set_flags (hb_buffer, + HB_BUFFER_FLAG_BOT | HB_BUFFER_FLAG_EOT); + + hb_buffer_add_utf8 (hb_buffer, + paragraph_text, paragraph_length, + item_offset, item_length); + + Ie, HarfBuzz itself checks whether the segment is at the beginning/end + of the paragraph. Clients that only pass item-at-a-time to HarfBuzz + continue not setting any flags whatsoever. + + Another way to put it is: if there's pre-context text in the buffer, + HarfBuzz ignores the BOT flag. If there's post-context, it ignores + EOT flag. + + +Overview of changes leading to 0.9.33 +Tuesday, July 22, 2014 +===================================== + +- Turn off ARabic 'cswh' feature that was accidentally turned on. +- Add HB_TAG_MAX_SIGNED. +- Make hb_face_make_immutable() really make face immutable! +- Windows build fixes. + + +Overview of changes leading to 0.9.32 +Thursday, July 17, 2014 +===================================== + +- Apply Arabic shaping features in spec order exactly. +- Another fix for Mongolian free variation selectors. +- For non-Arabic scripts in Arabic shaper apply 'rlig' and 'calt' + together. +- Minor adjustment to U+FFFD logic. +- Fix hb-coretext build. + + +Overview of changes leading to 0.9.31 +Wednesday, July 16, 2014 +===================================== + +- Only accept valid UTF-8/16/32; we missed many cases before. +- Better shaping of invalid UTF-8/16/32. Falls back to + U+FFFD REPLACEMENT CHARACTER now. +- With all changes in this release, the buffer will contain fully + valid Unicode after hb_buffer_add_utf8/16/32 no matter how + broken the input is. This can be overridden though. See below. +- Fix Mongolian Variation Selectors for fonts without GDEF. +- Fix minor invalid buffer access. +- Accept zh-Hant and zh-Hans language tags. hb_ot_tag_to_language() + now uses these instead of private tags. +- Build fixes. +- New API: + * hb_buffer_add_codepoints(). This does what hb_buffer_add_utf32() + used to do, ie. no validity check on the input at all. add_utf32 + now replaces invalid Unicode codepoints with the replacement + character (see below). + * hb_buffer_set_replacement_codepoint() + * hb_buffer_get_replacement_codepoint() + Previously, in hb_buffer_add_utf8 and hb_buffer_add_utf16, when + we detected broken input, we replaced that with (hb_codepoint_t)-1. + This has changed to use U+FFFD now, but can be changed using these + new API. + + +Overview of changes leading to 0.9.30 +Wednesday, July 9, 2014 +===================================== + +- Update to Unicode 7.0.0: + * New scripts Manichaean and Psalter Pahlavi are shaped using + Arabic shaper. + * All the other new scripts to through the generic shaper for + now. +- Minor Indic improvements. +- Fix graphite2 backend cluster mapping [crasher!] +- API changes: + * New HB_SCRIPT_* values for Unicode 7.0 scripts. + * New function hb_ot_layout_language_get_required_feature(). +- Build fixes. + + +Overview of changes leading to 0.9.29 +Thursday, May 29, 2014 +===================================== + +- Implement cmap in hb-ot-font.h. No variation-selectors yet. +- Myanmar: Allow MedialYa+Asat. +- Various Indic fixes: + * Support most characters in Extended Devanagary and Vedic + Unicode blocks. + * Allow digits and a some punctuation as consonant placeholders. +- Build fixes. + + +Overview of changes leading to 0.9.28 +Monday, April 28, 2014 +===================================== + +- Unbreak old-spec Indic shaping. (bug 76705) +- Fix shaping of U+17DD and U+0FC6. +- Add HB_NO_MERGE_CLUSTERS build option. NOT to be enabled by default + for shipping libraries. It's an option for further experimentation + right now. When we are sure how to do it properly, we will add + public run-time API for the functionality. +- Build fixes. + + +Overview of changes leading to 0.9.27 +Tuesday, March 18, 2014 +===================================== + +- Don't use "register" storage class specifier +- Wrap definition of free_langs() with HAVE_ATEXIT +- Add coretext_aat shaper and hb_coretext_face_create() constructor +- If HAVE_ICU_BUILTIN is defined, use hb-icu Unicode callbacks +- Add Myanmar test case from OpenType Myanmar spec +- Only do fallback Hebrew composition if no GPOS 'mark' available +- Allow bootstrapping without gtk-doc +- Use AM_MISSING_PROG for ragel and git +- Typo in ucdn's Makefile.am +- Improve MemoryBarrier() implementation + + +Overview of changes leading to 0.9.26 +Thursday, January 30, 2014 +===================================== + +- Misc fixes. +- Fix application of 'rtlm' feature. +- Automatically apply frac/numr/dnom around U+2044 FRACTION SLASH. +- New header: hb-ot-shape.h +- Uniscribe: fix scratch-buffer accounting. +- Reorder Tai Tham SAKOT to after tone-marks. +- Add Hangul shaper. +- New files: + hb-ot-shape-complex-hangul.cc + hb-ot-shape-complex-hebrew.cc + hb-ot-shape-complex-tibetan.cc +- Disable 'cswh' feature in Arabic shaper. +- Coretext: better handle surrogate pairs. +- Add HB_TAG_MAX and _HB_SCRIPT_MAX_VALUE. + + +Overview of changes leading to 0.9.25 +Wednesday, December 4, 2013 +===================================== + +- Myanmar shaper improvements. +- Avoid font fallback in CoreText backend. +- Additional OpenType language tag mappiongs. +- More aggressive shape-plan caching. +- Build with / require automake 1.13. +- Build with libtool 2.4.2.418 alpha to support ppc64le. + + +Overview of changes leading to 0.9.24 +Tuesday, November 13, 2013 +===================================== + +- Misc compiler warning fixes with clang. +- No functional changes. + + +Overview of changes leading to 0.9.23 +Monday, October 28, 2013 +===================================== + +- "Udupi HarfBuzz Hackfest", Paris, October 14..18 2013. +- Fix (Chain)Context recursion with non-monotone lookup positions. +- Misc Indic bug fixes. +- New Javanese / Buginese shaping, similar to Windows 8.1. + + +Overview of changes leading to 0.9.22 +Thursday, October 3, 2013 +===================================== + +- Fix use-after-end-of-scope in hb_language_from_string(). +- Fix hiding of default_ignorables if font doesn't have space glyph. +- Protect against out-of-range lookup indices. + +- API Changes: + + * Added hb_ot_layout_table_get_lookup_count() + + +Overview of changes leading to 0.9.21 +Monday, September 16, 2013 +===================================== + +- Rename gobject-introspection library name from harfbuzz to HarfBuzz. +- Remove (long disabled) hb-old and hb-icu-le test shapers. +- Misc gtk-doc and gobject-introspection annotations. +- Misc fixes. +- API changes: + + * Add HB_SET_VALUE_INVALID + +Overview of changes leading to 0.9.20 +Thursday, August 29, 2013 +===================================== + +General: +- Misc substitute_closure() fixes. +- Build fixes. + +Documentation: +- gtk-doc boilerplate integrated. Docs are built now, but + contain no contents. By next release hopefully we have + some content in. Enable using --enable-gtk-doc. + +GObject and Introspection: +- Added harfbuzz-gobject library (hb-gobject.h) that has type + bindings for all HarfBuzz objects and enums. Enable using + --with-gobject. +- Added gobject-introspection boilerplate. Nothing useful + right now. Work in progress. Gets enabled automatically if + --with-gobject is used. Override with --disable-introspection. + +OpenType shaper: +- Apply 'mark' in Myanmar shaper. +- Don't apply 'dlig' by default. + +Uniscribe shaper: +- Support user features. +- Fix loading of fonts that are also installed on the system. +- Fix shaping of Arabic Presentation Forms. +- Fix build with wide chars. + +CoreText shaper: +- Support user features. + +Source changes: +- hb_face_t code moved to hb-face.h / hb-face.cc. +- Added hb-deprecated.h. + +API changes: +- Added HB_DISABLE_DEPRECATED. +- Deprecated HB_SCRIPT_CANADIAN_ABORIGINAL; replaced by + HB_SCRIPT_CANADIAN_SYLLABICS. +- Deprecated HB_BUFFER_FLAGS_DEFAULT; replaced by + HB_BUFFER_FLAG_DEFAULT. +- Deprecated HB_BUFFER_SERIALIZE_FLAGS_DEFAULT; replaced by + HB_BUFFER_SERIALIZE_FLAG_DEFAULT. + + +Overview of changes leading to 0.9.19 +Tuesday, July 16, 2013 +===================================== + +- Build fixes. +- Better handling of multiple variation selectors in a row. +- Pass on variation selector to GSUB if not consumed by cmap. +- Fix undefined memory access. +- Add Javanese config to Indic shaper. +- Misc bug fixes. + +Overview of changes leading to 0.9.18 +Tuesday, May 28, 2013 +===================================== + +New build system: + +- All unneeded code is all disabled by default, + +- Uniscribe and CoreText shapers can be enabled with their --with options, + +- icu_le and old shapers cannot be enabled for now, + +- glib, freetype, and cairo will be detected automatically. + They can be force on/off'ed with their --with options, + +- icu and graphite2 are default off, can be enabled with their --with + options, + +Moreover, ICU support is now build into a separate library: +libharfbuzz-icu.so, and a new harfbuzz-icu.pc is shipped for it. +Distros can enable ICU now without every application on earth +getting linked to via libharfbuzz.so. + +For distros I recommend that they make sure they are building --with-glib +--with-freetype --with-cairo, --with-icu, and optionally --with-graphite2; +And package harfbuzz and harfbuzz-icu separately. + + +Overview of changes leading to 0.9.17 +Monday, May 20, 2013 +===================================== + +- Build fixes. +- Fix bug in hb_set_get_min(). +- Fix regression with Arabic mark positioning / width-zeroing. + +Overview of changes leading to 0.9.16 +Friday, April 19, 2013 +===================================== + +- Major speedup in OpenType lookup processing. With the Amiri + Arabic font, this release is over 3x faster than previous + release. All scripts / languages should see this speedup. + +- New --num-iterations option for hb-shape / hb-view; useful for + profiling. + +Overview of changes leading to 0.9.15 +Friday, April 05, 2013 +===================================== + +- Build fixes. +- Fix crasher in graphite2 shaper. +- Fix Arabic mark width zeroing regression. +- Don't compose Hangul jamo into Unicode syllables. + + +Overview of changes leading to 0.9.14 +Thursday, March 21, 2013 +===================================== + +- Build fixes. +- Fix time-consuming sanitize with malicious fonts. +- Implement hb_buffer_deserialize_glyphs() for both json and text. +- Do not ignore Hangul filler characters. +- Indic fixes: + * Fix Malayalam pre-base reordering interaction with post-forms. + * Further adjust ZWJ handling. Should fix known regressions from + 0.9.13. + + +Overview of changes leading to 0.9.13 +Thursday, February 25, 2013 +===================================== + +- Build fixes. +- Ngapi HarfBuzz Hackfest in London (February 2013): + * Fixed all known Indic bugs, + * New Win8-style Myanmar shaper, + * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue, + * Smartly ignore Default_Ignorable characters (joiners, etc) wheb + matching GSUB/GPOS lookups, + * Fix 'Phags-Pa U+A872 shaping, + * Fix partial disabling of default-on features, + * Allow disabling of TrueType kerning. +- Fix possible crasher with broken fonts with overlapping tables. +- Removed generated files from git again. So, one needs ragel to + bootstrap from the git tree. + +API changes: +- hb_shape() and related APIs now abort if buffer direction is + HB_DIRECTION_INVALID. Previously, hb_shape() was calling + hb_buffer_guess_segment_properties() on the buffer before + shaping. The heuristics in that function are fragile. If the + user really wants the old behvaior, they can call that function + right before calling hb_shape() to get the old behavior. +- hb_blob_create_sub_blob() always creates sub-blob with + HB_MEMORY_MODE_READONLY. See comments for the reason. + + +Overview of changes leading to 0.9.12 +Thursday, January 18, 2013 +===================================== + +- Build fixes for Sun compiler. +- Minor bug fix. + +Overview of changes leading to 0.9.11 +Thursday, January 10, 2013 +===================================== + +- Build fixes. +- Fix GPOS mark attachment with null Anchor offsets. +- [Indic] Fix old-spec reordering of viramas if sequence ends in one. +- Fix multi-threaded shaper data creation crash. +- Add atomic ops for Solaris. + +API changes: +- Rename hb_buffer_clear() to hb_buffer_clear_contents(). + + +Overview of changes leading to 0.9.10 +Thursday, January 3, 2013 +===================================== + +- [Indic] Fixed rendering of Malayalam dot-reph +- Updated OT language tags. +- Updated graphite2 backend. +- Improved hb_ot_layout_get_size_params() logic. +- Improve hb-shape/hb-view help output. +- Fixed hb-set.h implementation to not crash. +- Fixed various issues with hb_ot_layout_collect_lookups(). +- Various build fixes. + +New API: + +hb_graphite2_face_get_gr_face() +hb_graphite2_font_get_gr_font() +hb_coretext_face_get_cg_font() + +Modified API: + +hb_ot_layout_get_size_params() + + +Overview of changes leading to 0.9.9 +Wednesday, December 5, 2012 +==================================== + +- Fix build on Windows. +- Minor improvements. + + +Overview of changes leading to 0.9.8 +Tuesday, December 4, 2012 +==================================== + + +- Actually implement hb_shape_plan_get_shaper (). +- Make UCDB data tables const. +- Lots of internal refactoring in OTLayout tables. +- Flesh out hb_ot_layout_lookup_collect_glyphs(). + +New API: + +hb_ot_layout_collect_lookups() +hb_ot_layout_get_size_params() + + +Overview of changes leading to 0.9.7 +Sunday, November 21, 2012 +==================================== + + +HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes. + +- Fix Arabic contextual joining using pre-context text. +- Fix Sinhala "split matra" mess. +- Fix Khmer shaping with broken fonts. +- Implement Thai "PUA" shaping for old fonts. +- Do NOT route Kharoshthi script through the Indic shaper. +- Disable fallback positioning for Indic and Thai shapers. +- Misc fixes. + + +hb-shape / hb-view changes: + +- Add --text-before and --text-after +- Add --bot / --eot / --preserve-default-ignorables +- hb-shape --output-format=json + + +New API: + +hb_buffer_clear() + +hb_buffer_flags_t + +HB_BUFFER_FLAGS_DEFAULT +HB_BUFFER_FLAG_BOT +HB_BUFFER_FLAG_EOT +HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES + +hb_buffer_set_flags() +hb_buffer_get_flags() + +HB_BUFFER_SERIALIZE_FLAGS +hb_buffer_serialize_glyphs() +hb_buffer_deserialize_glyphs() +hb_buffer_serialize_list_formats() + +hb_set_add_range() +hb_set_del_range() +hb_set_get_population() +hb_set_next_range() + +hb_face_[sg]et_glyph_count() + +hb_segment_properties_t +HB_SEGMENT_PROPERTIES_DEFAULT +hb_segment_properties_equal() +hb_segment_properties_hash() + +hb_buffer_set_segment_properties() +hb_buffer_get_segment_properties() + +hb_ot_layout_glyph_class_t +hb_ot_layout_get_glyph_class() +hb_ot_layout_get_glyphs_in_class() + +hb_shape_plan_t +hb_shape_plan_create() +hb_shape_plan_create_cached() +hb_shape_plan_get_empty() +hb_shape_plan_reference() +hb_shape_plan_destroy() +hb_shape_plan_set_user_data() +hb_shape_plan_get_user_data() +hb_shape_plan_execute() +hb_shape_plan_get_shaper() + +hb_ot_shape_plan_collect_lookups() + + +API changes: + +- Remove "mask" parameter from hb_buffer_add(). +- Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup(). +- hb-set.h API const correction. +- Renamed hb_set_min/max() to hb_set_get_min/max(). +- Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups(). +- Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties(). + + + +Overview of changes leading to 0.9.6 +Sunday, November 13, 2012 +==================================== + +- Don't clear pre-context text if no new context is provided. +- Fix ReverseChainingSubstLookup, which was totally borked. +- Adjust output format of hb-shape a bit. +- Include config.h.in in-tree. Makes it easier for alternate build systems. +- Fix hb_buffer_set_length(buffer, 0) invalid memory allocation. +- Use ICU LayoutEngine's C API instead of C++. Avoids much headache. +- Drop glyphs for all of Unicode Default_Ignorable characters. +- Misc build fixes. + +Arabic shaper: +- Enable 'dlig' and 'mset' features in Arabic shaper. +- Implement 'Phags-pa shaping, improve Mongolian. + +Indic shaper: +- Decompose Sinhala split matras the way old HarfBuzz / Pango did. +- Initial support for Consonant Medials. +- Start adding new-style Myanmar shaping. +- Make reph and 'pref' logic introspect the font. +- Route Meetei-Mayek through the Indic shaper. +- Don't apply 'liga' in Indic shaper. +- Improve Malayalam pre-base reordering Ra interaction with Chillus. + + + +Overview of changes leading to 0.9.5 +Sunday, October 14, 2012 +==================================== + +- Synthetic-GSUB Arabic fallback shaping. + +- Misc Indic improvements. + +- Add build system support for pthread. + +- Imported UCDN for in-tree Unicode callbacks implementation. + +- Context-aware Arabic joining. + +- Misc other fixes. + +- New API: + + hb_feature_to/from-string() + hb_buffer_[sg]et_content_type() + + + +Overview of changes leading to 0.9.4 +Tuesday, Sep 03, 2012 +==================================== + +- Indic improvements with old-spec Malayalam. + +- Better fallback glyph positioning, specially with Thai / Lao marks. + +- Implement dotted-circle insertion. + +- Better Arabic fallback shaping / ligation. + +- Added ICU LayoutEngine backend for testing. Call it by the 'icu_le' name. + +- Misc fixes. + + + +Overview of changes leading to 0.9.3 +Friday, Aug 18, 2012 +==================================== + +- Fixed fallback mark positioning for left-to-right text. + +- Improve mark positioning for the remaining combining classes. + +- Unbreak Thai and fallback Arabic shaping. + +- Port Arabic shaper to shape-plan caching. + +- Use new ICU normalizer functions. + + + +Overview of changes leading to 0.9.2 +Friday, Aug 10, 2012 +==================================== + +- Over a thousand commits! This is the first major release of HarfBuzz. + +- HarfBuzz is feature-complete now! It should be in par, or better, than + both Pango's shapers and old HarfBuzz / Qt shapers. + +- New Indic shaper, supporting main Indic scripts, Sinhala, and Khmer. + +- Improved Arabic shaper, with fallback Arabic shaping, supporting Arabic, + Sinhala, N'ko, Mongolian, and Mandaic. + +- New Thai / Lao shaper. + +- Tibetan / Hangul support in the generic shaper. + +- Synthetic GDEF support for fonts without a GDEF table. + +- Fallback mark positioning for fonts without a GPOS table. + +- Unicode normalization shaping heuristic during glyph mapping. + +- New experimental Graphite2 backend. + +- New Uniscribe backend (primarily for testing). + +- New CoreText backend (primarily for testing). + +- Major optimization and speedup. + +- Test suites and testing infrastructure (work in progress). + +- Greatly improved hb-view cmdline tool. + +- hb-shape cmdline tool. + +- Unicode 6.1 support. + +Summary of API changes: + +o Changed API: + + - Users are expected to only include main header files now (ie. hb.h, + hb-glib.h, hb-ft.h, ...) + + - All struct tag names had their initial underscore removed. + Ie. "struct _hb_buffer_t" is "struct hb_buffer_t" now. + + - All set_user_data() functions now take a "replace" boolean parameter. + + - hb_buffer_create() takes zero arguments now. + Use hb_buffer_pre_allocate() to pre-allocate. + + - hb_buffer_add_utf*() now accept -1 for length parameters, + meaning "nul-terminated". + + - hb_direction_t enum values changed. + + - All *_from_string() APIs now take a length parameter to allow for + non-nul-terminated strings. A -1 length means "nul-terminated". + + - Typedef for hb_language_t changed. + + - hb_get_table_func_t renamed to hb_reference_table_func_t. + + - hb_ot_layout_table_choose_script() + + - Various renames in hb-unicode.h. + +o New API: + + - hb_buffer_guess_properties() + Automatically called by hb_shape(). + + - hb_buffer_normalize_glyphs() + + - hb_tag_from_string() + + - hb-coretext.h + + - hb-uniscribe.h + + - hb_face_reference_blob() + - hb_face_[sg]et_index() + - hb_face_set_upem() + + - hb_font_get_glyph_name_func_t + hb_font_get_glyph_from_name_func_t + hb_font_funcs_set_glyph_name_func() + hb_font_funcs_set_glyph_from_name_func() + hb_font_get_glyph_name() + hb_font_get_glyph_from_name() + hb_font_glyph_to_string() + hb_font_glyph_from_string() + + - hb_font_set_funcs_data() + + - hb_ft_font_set_funcs() + - hb_ft_font_get_face() + + - hb-gobject.h (work in progress) + + - hb_ot_shape_glyphs_closure() + hb_ot_layout_substitute_closure_lookup() + + - hb-set.h + + - hb_shape_full() + + - hb_unicode_combining_class_t + + - hb_unicode_compose_func_t + hb_unicode_decompose_func_t + hb_unicode_decompose_compatibility_func_t + hb_unicode_funcs_set_compose_func() + hb_unicode_funcs_set_decompose_func() + hb_unicode_funcs_set_decompose_compatibility_func() + hb_unicode_compose() + hb_unicode_decompose() + hb_unicode_decompose_compatibility() + +o Removed API: + + - hb_ft_get_font_funcs() + + - hb_ot_layout_substitute_start() + hb_ot_layout_substitute_lookup() + hb_ot_layout_substitute_finish() + hb_ot_layout_position_start() + hb_ot_layout_position_lookup() + hb_ot_layout_position_finish() + + + +Overview of changes leading to 0.6.0 +Friday, May 27, 2011 +==================================== + +- Vertical text support in GPOS +- Almost all API entries have unit tests now, under test/ +- All thread-safety issues are fixed + +Summary of API changes follows. + + +* Simple Types API: + + o New API: + HB_LANGUAGE_INVALID + hb_language_get_default() + hb_direction_to_string() + hb_direction_from_string() + hb_script_get_horizontal_direction() + HB_UNTAG() + + o Renamed API: + hb_category_t renamed to hb_unicode_general_category_t + + o Changed API: + hb_language_t is a typed pointers now + + o Removed API: + HB_TAG_STR() + + +* Use ISO 15924 tags for hb_script_t: + + o New API: + hb_script_from_iso15924_tag() + hb_script_to_iso15924_tag() + hb_script_from_string() + + o Changed API: + HB_SCRIPT_* enum members changed value. + + +* Buffer API streamlined: + + o New API: + hb_buffer_reset() + hb_buffer_set_length() + hb_buffer_allocation_successful() + + o Renamed API: + hb_buffer_ensure() renamed to hb_buffer_pre_allocate() + hb_buffer_add_glyph() renamed to hb_buffer_add() + + o Removed API: + hb_buffer_clear() + hb_buffer_clear_positions() + + o Changed API: + hb_buffer_get_glyph_infos() takes an out length parameter now + hb_buffer_get_glyph_positions() takes an out length parameter now + + +* Blob API streamlined: + + o New API: + hb_blob_get_data() + hb_blob_get_data_writable() + + o Renamed API: + hb_blob_create_empty() renamed to hb_blob_get_empty() + + o Removed API: + hb_blob_lock() + hb_blob_unlock() + hb_blob_is_writable() + hb_blob_try_writable() + + o Changed API: + hb_blob_create() takes user_data before destroy now + + +* Unicode functions API: + + o Unicode function vectors can subclass other unicode function vectors now. + Unimplemented callbacks in the subclass automatically chainup to the parent. + + o All hb_unicode_funcs_t callbacks take a user_data now. Their setters + take a user_data and its respective destroy callback. + + o New API: + hb_unicode_funcs_get_empty() + hb_unicode_funcs_get_default() + hb_unicode_funcs_get_parent() + + o Changed API: + hb_unicode_funcs_create() now takes a parent_funcs. + + o Removed func getter functions: + hb_unicode_funcs_get_mirroring_func() + hb_unicode_funcs_get_general_category_func() + hb_unicode_funcs_get_script_func() + hb_unicode_funcs_get_combining_class_func() + hb_unicode_funcs_get_eastasian_width_func() + + +* Face API: + + o Renamed API: + hb_face_get_table() renamed to hb_face_reference_table() + hb_face_create_for_data() renamed to hb_face_create() + + o Changed API: + hb_face_create_for_tables() takes user_data before destroy now + hb_face_reference_table() returns empty blob instead of NULL + hb_get_table_func_t accepts the face as first parameter now + +* Font API: + + o Fonts can subclass other fonts now. Unimplemented callbacks in the + subclass automatically chainup to the parent. When chaining up, + scale is adjusted if the parent font has a different scale. + + o All hb_font_funcs_t callbacks take a user_data now. Their setters + take a user_data and its respective destroy callback. + + o New API: + hb_font_get_parent() + hb_font_funcs_get_empty() + hb_font_create_sub_font() + + o Removed API: + hb_font_funcs_copy() + hb_font_unset_funcs() + + o Removed func getter functions: + hb_font_funcs_get_glyph_func() + hb_font_funcs_get_glyph_advance_func() + hb_font_funcs_get_glyph_extents_func() + hb_font_funcs_get_contour_point_func() + hb_font_funcs_get_kerning_func() + + o Changed API: + hb_font_create() takes a face and references it now + hb_font_set_funcs() takes user_data before destroy now + hb_font_set_scale() accepts signed integers now + hb_font_get_contour_point_func_t now takes glyph first, then point_index + hb_font_get_glyph_func_t returns a success boolean now + + +* Changed object model: + + o All object types have a _get_empty() now: + hb_blob_get_empty() + hb_buffer_get_empty() + hb_face_get_empty() + hb_font_get_empty() + hb_font_funcs_get_empty() + hb_unicode_funcs_get_empty() + + o Added _set_user_data() and _get_user_data() for all object types: + hb_blob_get_user_data() + hb_blob_set_user_data() + hb_buffer_get_user_data() + hb_buffer_set_user_data() + hb_face_get_user_data() + hb_face_set_user_data() + hb_font_funcs_get_user_data() + hb_font_funcs_set_user_data() + hb_font_get_user_data() + hb_font_set_user_data() + hb_unicode_funcs_get_user_data() + hb_unicode_funcs_set_user_data() + + o Removed the _get_reference_count() from all object types: + hb_blob_get_reference_count() + hb_buffer_get_reference_count() + hb_face_get_reference_count() + hb_font_funcs_get_reference_count() + hb_font_get_reference_count() + hb_unicode_funcs_get_reference_count() + + o Added _make_immutable() and _is_immutable() for all object types except for buffer: + hb_blob_make_immutable() + hb_blob_is_immutable() + hb_face_make_immutable() + hb_face_is_immutable() + + +* Changed API for vertical text support + + o The following callbacks where removed: + hb_font_get_glyph_advance_func_t + hb_font_get_kerning_func_t + + o The following new callbacks added instead: + hb_font_get_glyph_h_advance_func_t + hb_font_get_glyph_v_advance_func_t + hb_font_get_glyph_h_origin_func_t + hb_font_get_glyph_v_origin_func_t + hb_font_get_glyph_h_kerning_func_t + hb_font_get_glyph_v_kerning_func_t + + o The following API removed as such: + hb_font_funcs_set_glyph_advance_func() + hb_font_funcs_set_kerning_func() + hb_font_get_glyph_advance() + hb_font_get_kerning() + + o New API added instead: + hb_font_funcs_set_glyph_h_advance_func() + hb_font_funcs_set_glyph_v_advance_func() + hb_font_funcs_set_glyph_h_origin_func() + hb_font_funcs_set_glyph_v_origin_func() + hb_font_funcs_set_glyph_h_kerning_func() + hb_font_funcs_set_glyph_v_kerning_func() + hb_font_get_glyph_h_advance() + hb_font_get_glyph_v_advance() + hb_font_get_glyph_h_origin() + hb_font_get_glyph_v_origin() + hb_font_get_glyph_h_kerning() + hb_font_get_glyph_v_kerning() + + o The following higher-leve API added for convenience: + hb_font_get_glyph_advance_for_direction() + hb_font_get_glyph_origin_for_direction() + hb_font_add_glyph_origin_for_direction() + hb_font_subtract_glyph_origin_for_direction() + hb_font_get_glyph_kerning_for_direction() + hb_font_get_glyph_extents_for_origin() + hb_font_get_glyph_contour_point_for_origin() + + +* OpenType Layout API: + + o New API: + hb_ot_layout_position_start() + hb_ot_layout_substitute_start() + hb_ot_layout_substitute_finish() + + +* Glue code: + + o New API: + hb_glib_script_to_script() + hb_glib_script_from_script() + hb_icu_script_to_script() + hb_icu_script_from_script() + + +* Version API added: + + o New API: + HB_VERSION_MAJOR + HB_VERSION_MINOR + HB_VERSION_MICRO + HB_VERSION_STRING + HB_VERSION_CHECK() + hb_version() + hb_version_string() + hb_version_check() + + diff --git a/gfx/harfbuzz/README.md b/gfx/harfbuzz/README.md new file mode 100644 index 0000000000..4202961e04 --- /dev/null +++ b/gfx/harfbuzz/README.md @@ -0,0 +1,99 @@ +[![Linux CI Status](https://github.com/harfbuzz/harfbuzz/workflows/linux-ci/badge.svg)](https://github.com/harfbuzz/harfbuzz/workflows/linux-ci/badge.svg) +[![CircleCI Build Status](https://circleci.com/gh/harfbuzz/harfbuzz/tree/main.svg?style=svg)](https://circleci.com/gh/harfbuzz/harfbuzz/tree/main) +[![OSS-Fuzz Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/harfbuzz.svg)](https://oss-fuzz-build-logs.storage.googleapis.com/index.html) +[![Coverity Scan Build Status](https://scan.coverity.com/projects/15166/badge.svg)](https://scan.coverity.com/projects/harfbuzz) +[![Codacy Badge](https://app.codacy.com/project/badge/Grade/89c872f5ce1c42af802602bfcd15d90a)](https://www.codacy.com/gh/harfbuzz/harfbuzz/dashboard?utm_source=github.com&utm_medium=referral&utm_content=harfbuzz/harfbuzz&utm_campaign=Badge_Grade) +[![Codecov Code Coverage](https://codecov.io/gh/harfbuzz/harfbuzz/branch/main/graph/badge.svg)](https://codecov.io/gh/harfbuzz/harfbuzz) +[![Packaging status](https://repology.org/badge/tiny-repos/harfbuzz.svg)](https://repology.org/project/harfbuzz/versions) + +# HarfBuzz + +HarfBuzz is a text shaping engine. It primarily supports [OpenType][1], but also +[Apple Advanced Typography][2]. HarfBuzz is used in Android, Chrome, +ChromeOS, Firefox, GNOME, GTK+, KDE, LibreOffice, OpenJDK, PlayStation, Qt, +XeTeX, and other places. + +For bug reports, mailing list, and other information please visit: + + http://harfbuzz.org/ + +For license information, see [COPYING](COPYING). + +## Documentation + +For user manual as well as API documentation, check: https://harfbuzz.github.io + +## Download + +For tarball releases of HarfBuzz, look [here][3]. At the same place you +will also find Win32/Win64 binary bundles that include libharfbuzz DLL, +hb-view.exe, hb-shape.exe, and all dependencies. + +The canonical source tree is available on [github][4]. + +The API that comes with `hb.h` will not change incompatibly. Other, peripheral, +headers are more likely to go through minor modifications, but again, we do our +best to never change API in an incompatible way. We will never break the ABI. + +If you are not sure whether Pango or HarfBuzz is right for you, read [Pango vs +HarfBuzz][5]. + +## Development + +For build information, see [BUILD.md](BUILD.md). + +For custom configurations, see [CONFIG.md](CONFIG.md). + +For testing and profiling, see [TESTING.md](TESTING.md). + +To get a better idea of where HarfBuzz stands in the text rendering stack you +may want to read [State of Text Rendering][6], though, that document is many +years old. Here are a few presentation slides about HarfBuzz at the +Internationalization and Unicode Conference over the years: + +* November 2014, [Unicode, OpenType, and HarfBuzz: Closing the Circle][7], +* October 2012, [HarfBuzz, The Free and Open Text Shaping Engine][8], +* October 2009, [HarfBuzz: the Free and Open Shaping Engine][9]. + +Both development and user support discussion around HarfBuzz happens on the +[github][4]. + +To report bugs or submit patches please use [github][4] issues and +pull-requests. + +For a comparison of old vs new HarfBuzz memory consumption see [this][10]. + + + +## Name + +HarfBuzz (حرف‌باز) is my Persian translation of “[OpenType][1]”, +transliterated using the Latin script. It sports a second meaning, but that +ain’t translatable. + +> Background: Originally there was this font format called TrueType. People and +> companies started calling their type engines all things ending in Type: +> FreeType, CoolType, ClearType, etc. And then came OpenType, which is the +> successor of TrueType. So, for my OpenType implementation, I decided to stick +> with the concept but use the Persian translation. Which is fitting given that +> Persian is written in the Arabic script, and OpenType is an extension of +> TrueType that adds support for complex script rendering, and HarfBuzz is an +> implementation of OpenType complex text shaping. + +
+ Packaging status of HarfBuzz + +[![Packaging status](https://repology.org/badge/vertical-allrepos/harfbuzz.svg?header=harfbuzz)](https://repology.org/project/harfbuzz/versions) + +
+ +[1]: https://docs.microsoft.com/en-us/typography/opentype/spec/ +[2]: https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6AATIntro.html +[3]: https://github.com/harfbuzz/harfbuzz/releases +[4]: https://github.com/harfbuzz/harfbuzz +[5]: http://mces.blogspot.com/2009/11/pango-vs-harfbuzz.html +[6]: http://behdad.org/text/ +[7]: https://goo.gl/FSIQuC +[8]: https://goo.gl/2wSRu +[9]: http://behdad.org/download/Presentations/slippy/harfbuzz_slides.pdf +[10]: https://goo.gl/woyty diff --git a/gfx/harfbuzz/THANKS b/gfx/harfbuzz/THANKS new file mode 100644 index 0000000000..88cb7e9ea1 --- /dev/null +++ b/gfx/harfbuzz/THANKS @@ -0,0 +1,7 @@ +Bradley Grainger +Kenichi Ishibashi +Ivan Kuckir +Ryan Lortie +Jeff Muizelaar +suzuki toshiya +Philip Withnall diff --git a/gfx/harfbuzz/autogen.sh b/gfx/harfbuzz/autogen.sh new file mode 100755 index 0000000000..085b4d8632 --- /dev/null +++ b/gfx/harfbuzz/autogen.sh @@ -0,0 +1,48 @@ +#!/bin/sh +# Run this to generate all the initial makefiles, etc. + +test -n "$srcdir" || srcdir=`dirname "$0"` +test -n "$srcdir" || srcdir=. + +olddir=`pwd` +cd $srcdir + +#printf "checking for ragel... " +#which ragel || { +# echo "You need to install ragel... See http://www.complang.org/ragel/" +# exit 1 +#} + +printf "checking for pkg-config... " +which pkg-config || { + echo "*** No pkg-config found, please install it ***" + exit 1 +} + +printf "checking for libtoolize... " +which glibtoolize || which libtoolize || { + echo "*** No libtoolize (libtool) found, please install it ***" + exit 1 +} +printf "checking for gtkdocize... " +if which gtkdocize ; then + gtkdocize --copy || exit 1 +else + echo "*** No gtkdocize (gtk-doc) found, skipping documentation ***" + echo "EXTRA_DIST = " > gtk-doc.make +fi + +printf "checking for autoreconf... " +which autoreconf || { + echo "*** No autoreconf (autoconf) found, please install it ***" + exit 1 +} + +echo "running autoreconf --force --install --verbose" +autoreconf --force --install --verbose || exit $? + +cd $olddir +test -n "$NOCONFIGURE" || { + echo "running configure $@" + "$srcdir/configure" "$@" +} diff --git a/gfx/harfbuzz/configure.ac b/gfx/harfbuzz/configure.ac new file mode 100644 index 0000000000..a95006baa8 --- /dev/null +++ b/gfx/harfbuzz/configure.ac @@ -0,0 +1,486 @@ +AC_PREREQ([2.64]) +AC_INIT([HarfBuzz], + [7.3.0], + [https://github.com/harfbuzz/harfbuzz/issues/new], + [harfbuzz], + [http://harfbuzz.org/]) + +AC_CONFIG_MACRO_DIR([m4]) +AC_CONFIG_SRCDIR([src/harfbuzz.pc.in]) +AC_CONFIG_HEADERS([config.h]) + +AM_INIT_AUTOMAKE([1.13.0 gnits tar-ustar dist-xz no-dist-gzip -Wall no-define color-tests -Wno-portability]) +AM_SILENT_RULES([yes]) +AX_CODE_COVERAGE + +# Initialize libtool +m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) +LT_PREREQ([2.2]) +LT_INIT([disable-static]) + +# Check for programs +AC_PROG_CC +AC_PROG_CC_C99 +AM_PROG_CC_C_O +AC_PROG_CXX +AX_CXX_COMPILE_STDCXX(11) +AC_SYS_LARGEFILE +PKG_PROG_PKG_CONFIG([0.28]) +AM_MISSING_PROG([RAGEL], [ragel]) +AM_MISSING_PROG([GIT], [git]) + +# Version +m4_define(hb_version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]])) +m4_define(hb_version_major,m4_argn(1,hb_version_triplet)) +m4_define(hb_version_minor,m4_argn(2,hb_version_triplet)) +m4_define(hb_version_micro,m4_argn(3,hb_version_triplet)) +HB_VERSION_MAJOR=hb_version_major +HB_VERSION_MINOR=hb_version_minor +HB_VERSION_MICRO=hb_version_micro +HB_VERSION=AC_PACKAGE_VERSION +AC_SUBST(HB_VERSION_MAJOR) +AC_SUBST(HB_VERSION_MINOR) +AC_SUBST(HB_VERSION_MICRO) +AC_SUBST(HB_VERSION) + +# Libtool version +m4_define([hb_version_int], + m4_eval(60000 + hb_version_major*100 + hb_version_minor*10 + hb_version_micro)) +HB_LIBTOOL_VERSION_INFO=hb_version_int:0:hb_version_int +AC_SUBST(HB_LIBTOOL_VERSION_INFO) + +AC_ARG_WITH([libstdc++], + [AS_HELP_STRING([--with-libstdc++=@<:@yes/no@:>@], + [Allow linking with libstdc++ @<:@default=no@:>@])], + [with_libstdcxx=$withval], + [with_libstdcxx=no]) +AM_CONDITIONAL(WITH_LIBSTDCXX, [test "x$with_libstdcxx" = "xyes"]) + +# Documentation +have_gtk_doc=false +m4_ifdef([GTK_DOC_CHECK], [ +GTK_DOC_CHECK([1.15],[--flavour no-tmpl]) + if test "x$enable_gtk_doc" = xyes; then + have_gtk_doc=true + fi +], [ + AM_CONDITIONAL([ENABLE_GTK_DOC], false) +]) + +# Functions and headers +AC_CHECK_FUNCS(atexit mprotect sysconf getpagesize mmap isatty newlocale uselocale sincosf) +AC_CHECK_HEADERS(unistd.h sys/mman.h stdbool.h xlocale.h) + +# Compiler flags +AC_CANONICAL_HOST +AC_CHECK_ALIGNOF([struct{char;}]) +if test "x$GCC" = "xyes"; then + + # Make symbols link locally + AX_CHECK_LINK_FLAG([[-Bsymbolic-functions]], [LDFLAGS="$LDFLAGS -Bsymbolic-functions"]) + + # Make it possible to not link to libstdc++ + # No threadsafe statics in C++ as we do it ourselves. + # We don't use these features, so it's safe to disable them + # even in the cases where we DO link to libstdc++. + # Put -fno-rtti before $CXXFLAGS such that users can re-enable it + # by overriding CXXFLAGS. + CXXFLAGS="-fno-rtti $CXXFLAGS -fno-exceptions -fno-threadsafe-statics" + + case "$host" in + *-*-mingw*) + ;; + *) + # Hide inline methods + CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden" + ;; + esac + + case "$host" in + arm-*-*) + if test "x$ac_cv_alignof_struct_char__" != x1; then + # Request byte alignment + CXXFLAGS="$CXXFLAGS -mstructure-size-boundary=8" + fi + ;; + esac +fi + +AM_CONDITIONAL(HAVE_GCC, test "x$GCC" = "xyes") + +hb_os_win32=no +AC_MSG_CHECKING([for native Win32]) +case "$host" in + *-*-mingw*) + hb_os_win32=yes + ;; +esac +AC_MSG_RESULT([$hb_os_win32]) +AM_CONDITIONAL(OS_WIN32, test "$hb_os_win32" = "yes") + +have_pthread=false +AX_PTHREAD([have_pthread=true]) +if $have_pthread; then + AC_DEFINE(HAVE_PTHREAD, 1, [Have POSIX threads]) +fi +AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread) + +dnl ========================================================================== + +AC_ARG_WITH(glib, + [AS_HELP_STRING([--with-glib=@<:@yes/no/auto@:>@], + [Use glib @<:@default=auto@:>@])],, + [with_glib=auto]) +have_glib=false +GLIB_DEPS="glib-2.0 >= 2.19.1" +AC_SUBST(GLIB_DEPS) +if test "x$with_glib" = "xyes" -o "x$with_glib" = "xauto"; then + PKG_CHECK_MODULES(GLIB, $GLIB_DEPS, have_glib=true, :) +fi +if test "x$with_glib" = "xyes" -a "x$have_glib" != "xtrue"; then + AC_MSG_ERROR([glib support requested but glib-2.0 not found]) +fi +if $have_glib; then + AC_DEFINE(HAVE_GLIB, 1, [Have glib2 library]) +fi +AM_CONDITIONAL(HAVE_GLIB, $have_glib) + +dnl =========================================================================== + +AC_ARG_WITH(gobject, + [AS_HELP_STRING([--with-gobject=@<:@yes/no/auto@:>@], + [Use gobject @<:@default=no@:>@])],, + [with_gobject=no]) +have_gobject=false +if test "x$with_gobject" = "xyes" -o "x$with_gobject" = "xauto"; then + PKG_CHECK_MODULES(GOBJECT, gobject-2.0 glib-2.0, have_gobject=true, :) +fi +if test "x$with_gobject" = "xyes" -a "x$have_gobject" != "xtrue"; then + AC_MSG_ERROR([gobject support requested but gobject-2.0 / glib-2.0 not found]) +fi +if $have_gobject; then + AC_DEFINE(HAVE_GOBJECT, 1, [Have gobject2 library]) + GLIB_MKENUMS=`$PKG_CONFIG --variable=glib_mkenums glib-2.0` + AC_SUBST(GLIB_MKENUMS) +fi +AM_CONDITIONAL(HAVE_GOBJECT, $have_gobject) +AC_SUBST(have_gobject) + +dnl =========================================================================== + + +dnl =========================================================================== +# Gobject-Introspection +have_introspection=false +m4_ifdef([GOBJECT_INTROSPECTION_CHECK], [ + if $have_gobject; then + GOBJECT_INTROSPECTION_CHECK([1.34.0]) + if test "x$found_introspection" = xyes; then + have_introspection=true + fi + else + AM_CONDITIONAL([HAVE_INTROSPECTION], false) + fi +], [ + AM_CONDITIONAL([HAVE_INTROSPECTION], false) +]) + +dnl ========================================================================== + +AC_ARG_WITH(cairo, + [AS_HELP_STRING([--with-cairo=@<:@yes/no/auto@:>@], + [Use cairo @<:@default=auto@:>@])],, + [with_cairo=auto]) +have_cairo=false +if test "x$with_cairo" = "xyes" -o "x$with_cairo" = "xauto"; then + PKG_CHECK_MODULES(CAIRO, cairo >= 1.8.0, have_cairo=true, :) + save_libs=$LIBS + LIBS="$LIBS $CAIRO_LIBS" + AC_CHECK_FUNCS(cairo_user_font_face_set_render_color_glyph_func) + LIBS=$save_libs +fi +if test "x$with_cairo" = "xyes" -a "x$have_cairo" != "xtrue"; then + AC_MSG_ERROR([cairo support requested but not found]) +fi +if $have_cairo; then + AC_DEFINE(HAVE_CAIRO, 1, [Have cairo graphics library]) +fi +AM_CONDITIONAL(HAVE_CAIRO, $have_cairo) + +have_cairo_ft=false +if $have_cairo; then + PKG_CHECK_MODULES(CAIRO_FT, cairo-ft, have_cairo_ft=true, :) +fi +if $have_cairo_ft; then + AC_DEFINE(HAVE_CAIRO_FT, 1, [Have cairo-ft support in cairo graphics library]) +fi +AM_CONDITIONAL(HAVE_CAIRO_FT, $have_cairo_ft) + +dnl ========================================================================== + +AC_ARG_WITH(chafa, + [AS_HELP_STRING([--with-chafa=@<:@yes/no/auto@:>@], + [Use chafa @<:@default=auto@:>@])],, + [with_chafa=auto]) +have_chafa=false +if test "x$with_chafa" = "xyes" -o "x$with_chafa" = "xauto"; then + PKG_CHECK_MODULES(CHAFA, chafa >= 1.6.0, have_chafa=true, :) +fi +if test "x$with_chafa" = "xyes" -a "x$have_chafa" != "xtrue"; then + AC_MSG_ERROR([chafa support requested but not found]) +fi +if $have_chafa; then + AC_DEFINE(HAVE_CHAFA, 1, [Have chafa terminal graphics library]) +fi +AM_CONDITIONAL(HAVE_CHAFA, $have_chafa) + +dnl ========================================================================== + +AC_ARG_WITH(icu, + [AS_HELP_STRING([--with-icu=@<:@yes/no/builtin/auto@:>@], + [Use ICU @<:@default=auto@:>@])],, + [with_icu=auto]) +have_icu=false +if test "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" -o "x$with_icu" = "xauto"; then + PKG_CHECK_MODULES(ICU, icu-uc, have_icu=true, :) +fi +if test \( "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" \) -a "x$have_icu" != "xtrue"; then + AC_MSG_ERROR([icu support requested but icu-uc not found]) +fi + +if $have_icu; then + CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS icu-uc`" + AC_DEFINE(HAVE_ICU, 1, [Have ICU library]) + if test "x$with_icu" = "xbuiltin"; then + AC_DEFINE(HAVE_ICU_BUILTIN, 1, [Use hb-icu Unicode callbacks]) + fi +fi +AM_CONDITIONAL(HAVE_ICU, $have_icu) +AM_CONDITIONAL(HAVE_ICU_BUILTIN, $have_icu && test "x$with_icu" = "xbuiltin") + +dnl =========================================================================== + +AC_ARG_WITH(graphite2, + [AS_HELP_STRING([--with-graphite2=@<:@yes/no/auto@:>@], + [Use the graphite2 library @<:@default=no@:>@])],, + [with_graphite2=no]) +have_graphite2=false +GRAPHITE2_DEPS="graphite2 >= 1.2.0" +AC_SUBST(GRAPHITE2_DEPS) +if test "x$with_graphite2" = "xyes" -o "x$with_graphite2" = "xauto"; then + PKG_CHECK_MODULES(GRAPHITE2, $GRAPHITE2_DEPS, have_graphite2=true, :) + if test "x$have_graphite2" != "xtrue"; then + # If pkg-config is not available, graphite2 can still be there + ac_save_CFLAGS="$CFLAGS" + ac_save_CPPFLAGS="$CPPFLAGS" + CFLAGS="$CFLAGS $GRAPHITE2_CFLAGS" + CPPFLAGS="$CPPFLAGS $GRAPHITE2_CFLAGS" + AC_CHECK_HEADER(graphite2/Segment.h, have_graphite2=true, :) + CPPFLAGS="$ac_save_CPPFLAGS" + CFLAGS="$ac_save_CFLAGS" + fi +fi +if test "x$with_graphite2" = "xyes" -a "x$have_graphite2" != "xtrue"; then + AC_MSG_ERROR([graphite2 support requested but libgraphite2 not found]) +fi +if $have_graphite2; then + AC_DEFINE(HAVE_GRAPHITE2, 1, [Have Graphite2 library]) +fi +AM_CONDITIONAL(HAVE_GRAPHITE2, $have_graphite2) + +dnl ========================================================================== + +AC_ARG_WITH(freetype, + [AS_HELP_STRING([--with-freetype=@<:@yes/no/auto@:>@], + [Use the FreeType library @<:@default=auto@:>@])],, + [with_freetype=auto]) +have_freetype=false +FREETYPE_DEPS="freetype2 >= 12.0.6" +AC_SUBST(FREETYPE_DEPS) +if test "x$with_freetype" = "xyes" -o "x$with_freetype" = "xauto"; then + # See freetype/docs/VERSION.DLL; 12.0.6 means freetype-2.4.2 + PKG_CHECK_MODULES(FREETYPE, $FREETYPE_DEPS, have_freetype=true, :) +fi +if test "x$with_freetype" = "xyes" -a "x$have_freetype" != "xtrue"; then + AC_MSG_ERROR([FreeType support requested but libfreetype2 not found]) +fi +if $have_freetype; then + AC_DEFINE(HAVE_FREETYPE, 1, [Have FreeType 2 library]) + save_libs=$LIBS + LIBS="$LIBS $FREETYPE_LIBS" + AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates FT_Set_Var_Blend_Coordinates FT_Done_MM_Var FT_Get_Transform) + LIBS=$save_libs +fi +AM_CONDITIONAL(HAVE_FREETYPE, $have_freetype) + +dnl =========================================================================== + +AC_ARG_WITH(uniscribe, + [AS_HELP_STRING([--with-uniscribe=@<:@yes/no/auto@:>@], + [Use the Uniscribe library @<:@default=no@:>@])],, + [with_uniscribe=no]) +have_uniscribe=false +if test "x$with_uniscribe" = "xyes" -o "x$with_uniscribe" = "xauto"; then + AC_CHECK_HEADERS(usp10.h windows.h, have_uniscribe=true) +fi +if test "x$with_uniscribe" = "xyes" -a "x$have_uniscribe" != "xtrue"; then + AC_MSG_ERROR([uniscribe support requested but not found]) +fi +if $have_uniscribe; then + UNISCRIBE_CFLAGS= + UNISCRIBE_LIBS="-lusp10 -lgdi32 -lrpcrt4" + AC_SUBST(UNISCRIBE_CFLAGS) + AC_SUBST(UNISCRIBE_LIBS) + AC_DEFINE(HAVE_UNISCRIBE, 1, [Have Uniscribe library]) +fi +AM_CONDITIONAL(HAVE_UNISCRIBE, $have_uniscribe) + +dnl =========================================================================== + +AC_ARG_WITH(gdi, + [AS_HELP_STRING([--with-gdi=@<:@yes/no/auto@:>@], + [Provide GDI integration helpers @<:@default=no@:>@])],, + [with_gdi=no]) +have_gdi=false +if test "x$with_gdi" = "xyes" -o "x$with_gdi" = "xauto"; then + AC_CHECK_HEADERS(windows.h, have_gdi=true) +fi +if test "x$with_gdi" = "xyes" -a "x$have_gdi" != "xtrue"; then + AC_MSG_ERROR([gdi support requested but not found]) +fi +if $have_gdi; then + GDI_CFLAGS= + GDI_LIBS="-lgdi32" + AC_SUBST(GDI_CFLAGS) + AC_SUBST(GDI_LIBS) + AC_DEFINE(HAVE_GDI, 1, [Have GDI library]) +fi +AM_CONDITIONAL(HAVE_GDI, $have_gdi) + +dnl =========================================================================== + +AC_ARG_WITH(directwrite, + [AS_HELP_STRING([--with-directwrite=@<:@yes/no/auto@:>@], + [Use the DirectWrite library (experimental) @<:@default=no@:>@])],, + [with_directwrite=no]) +have_directwrite=false +AC_LANG_PUSH([C++]) +if test "x$with_directwrite" = "xyes" -o "x$with_directwrite" = "xauto"; then + AC_CHECK_HEADERS(dwrite_1.h, have_directwrite=true) +fi +AC_LANG_POP([C++]) +if test "x$with_directwrite" = "xyes" -a "x$have_directwrite" != "xtrue"; then + AC_MSG_ERROR([directwrite support requested but not found]) +fi +if $have_directwrite; then + AC_DEFINE(HAVE_DIRECTWRITE, 1, [Have DirectWrite library]) +fi +AM_CONDITIONAL(HAVE_DIRECTWRITE, $have_directwrite) + +dnl =========================================================================== + +AC_ARG_WITH(coretext, + [AS_HELP_STRING([--with-coretext=@<:@yes/no/auto@:>@], + [Use CoreText @<:@default=no@:>@])],, + [with_coretext=no]) +have_coretext=false +if test "x$with_coretext" = "xyes" -o "x$with_coretext" = "xauto"; then + AC_CHECK_TYPE(CTFontRef, have_coretext=true,, [#include ]) + + if $have_coretext; then + CORETEXT_CFLAGS= + CORETEXT_LIBS="-framework ApplicationServices" + AC_SUBST(CORETEXT_CFLAGS) + AC_SUBST(CORETEXT_LIBS) + else + # On iOS CoreText and CoreGraphics are stand-alone frameworks + if test "x$have_coretext" != "xtrue"; then + # Check for a different symbol to avoid getting cached result. + AC_CHECK_TYPE(CTRunRef, have_coretext=true,, [#include ]) + fi + + if $have_coretext; then + CORETEXT_CFLAGS= + CORETEXT_LIBS="-framework CoreText -framework CoreGraphics -framework CoreFoundation" + AC_SUBST(CORETEXT_CFLAGS) + AC_SUBST(CORETEXT_LIBS) + fi + fi +fi +if test "x$with_coretext" = "xyes" -a "x$have_coretext" != "xtrue"; then + AC_MSG_ERROR([CoreText support requested but libcoretext not found]) +fi +if $have_coretext; then + AC_DEFINE(HAVE_CORETEXT, 1, [Have Core Text backend]) +fi +AM_CONDITIONAL(HAVE_CORETEXT, $have_coretext) + +dnl =========================================================================== + +AC_CONFIG_FILES([ +Makefile +src/Makefile +src/harfbuzz-config.cmake +util/Makefile +test/Makefile +test/api/Makefile +test/fuzzing/Makefile +test/shape/Makefile +test/shape/data/Makefile +test/shape/data/aots/Makefile +test/shape/data/in-house/Makefile +test/shape/data/text-rendering-tests/Makefile +test/subset/Makefile +test/subset/data/Makefile +test/subset/data/repack_tests/Makefile +test/threads/Makefile +perf/Makefile +docs/Makefile +docs/version.xml +]) + +AC_OUTPUT + +echo +echo "C++ compiler version:" +$CXX --version +echo + +AC_MSG_NOTICE([ + +Autotools is no longer our supported build system for building the library +for *nix distributions, please migrate to meson. + +]) + + +AC_MSG_NOTICE([ + +Build configuration: + +Unicode callbacks (you want at least one): + Builtin true + Glib: ${have_glib} + ICU: ${have_icu} + +Font callbacks (the more the merrier): + FreeType: ${have_freetype} + +Tools used for command-line utilities: + Cairo: ${have_cairo} + Chafa: ${have_chafa} + +Additional shapers: + Graphite2: ${have_graphite2} + +Platform shapers (not normally needed): + CoreText: ${have_coretext} + DirectWrite: ${have_directwrite} + GDI: ${have_gdi} + Uniscribe: ${have_uniscribe} + +Other features: + Documentation: ${enable_gtk_doc} + GObject bindings: ${have_gobject} + Introspection: ${have_introspection} +]) diff --git a/gfx/harfbuzz/git.mk b/gfx/harfbuzz/git.mk new file mode 100644 index 0000000000..cd52db1eb6 --- /dev/null +++ b/gfx/harfbuzz/git.mk @@ -0,0 +1,401 @@ +# git.mk, a small Makefile to autogenerate .gitignore files +# for autotools-based projects. +# +# Copyright 2009, Red Hat, Inc. +# Copyright 2010,2011,2012,2013 Behdad Esfahbod +# Written by Behdad Esfahbod +# +# Copying and distribution of this file, with or without modification, +# is permitted in any medium without royalty provided the copyright +# notice and this notice are preserved. +# +# The latest version of this file can be downloaded from: +GIT_MK_URL = https://raw.githubusercontent.com/behdad/git.mk/master/git.mk +# +# Bugs, etc, should be reported upstream at: +# https://github.com/behdad/git.mk +# +# To use in your project, import this file in your git repo's toplevel, +# then do "make -f git.mk". This modifies all Makefile.am files in +# your project to -include git.mk. Remember to add that line to new +# Makefile.am files you create in your project, or just rerun the +# "make -f git.mk". +# +# This enables automatic .gitignore generation. If you need to ignore +# more files, add them to the GITIGNOREFILES variable in your Makefile.am. +# But think twice before doing that. If a file has to be in .gitignore, +# chances are very high that it's a generated file and should be in one +# of MOSTLYCLEANFILES, CLEANFILES, DISTCLEANFILES, or MAINTAINERCLEANFILES. +# +# The only case that you need to manually add a file to GITIGNOREFILES is +# when remove files in one of mostlyclean-local, clean-local, distclean-local, +# or maintainer-clean-local make targets. +# +# Note that for files like editor backup, etc, there are better places to +# ignore them. See "man gitignore". +# +# If "make maintainer-clean" removes the files but they are not recognized +# by this script (that is, if "git status" shows untracked files still), send +# me the output of "git status" as well as your Makefile.am and Makefile for +# the directories involved and I'll diagnose. +# +# For a list of toplevel files that should be in MAINTAINERCLEANFILES, see +# Makefile.am.sample in the git.mk git repo. +# +# Don't EXTRA_DIST this file. It is supposed to only live in git clones, +# not tarballs. It serves no useful purpose in tarballs and clutters the +# build dir. +# +# This file knows how to handle autoconf, automake, libtool, gtk-doc, +# gnome-doc-utils, yelp.m4, mallard, intltool, gsettings, dejagnu, appdata, +# appstream, hotdoc. +# +# This makefile provides the following targets: +# +# - all: "make all" will build all gitignore files. +# - gitignore: makes all gitignore files in the current dir and subdirs. +# - .gitignore: make gitignore file for the current dir. +# - gitignore-recurse: makes all gitignore files in the subdirs. +# +# KNOWN ISSUES: +# +# - Recursive configure doesn't work as $(top_srcdir)/git.mk inside the +# submodule doesn't find us. If you have configure.{in,ac} files in +# subdirs, add a proxy git.mk file in those dirs that simply does: +# "include $(top_srcdir)/../git.mk". Add more ..'s to your taste. +# And add those files to git. See vte/gnome-pty-helper/git.mk for +# example. +# + + + +############################################################################### +# Variables user modules may want to add to toplevel MAINTAINERCLEANFILES: +############################################################################### + +# +# Most autotools-using modules should be fine including this variable in their +# toplevel MAINTAINERCLEANFILES: +GITIGNORE_MAINTAINERCLEANFILES_TOPLEVEL = \ + $(srcdir)/aclocal.m4 \ + $(srcdir)/autoscan.log \ + $(srcdir)/configure.scan \ + `AUX_DIR=$(srcdir)/$$(cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_AUX_DIR:$$1' ./configure.ac); \ + test "x$$AUX_DIR" = "x$(srcdir)/" && AUX_DIR=$(srcdir); \ + for x in \ + ar-lib \ + compile \ + config.guess \ + config.rpath \ + config.sub \ + depcomp \ + install-sh \ + ltmain.sh \ + missing \ + mkinstalldirs \ + test-driver \ + ylwrap \ + ; do echo "$$AUX_DIR/$$x"; done` \ + `cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_HEADERS:$$1' ./configure.ac | \ + head -n 1 | while read f; do echo "$(srcdir)/$$f.in"; done` +# +# All modules should also be fine including the following variable, which +# removes automake-generated Makefile.in files: +GITIGNORE_MAINTAINERCLEANFILES_MAKEFILE_IN = \ + `cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_FILES:$$1' ./configure.ac | \ + while read f; do \ + case $$f in Makefile|*/Makefile) \ + test -f "$(srcdir)/$$f.am" && echo "$(srcdir)/$$f.in";; esac; \ + done` +# +# Modules that use libtool and use AC_CONFIG_MACRO_DIR() may also include this, +# though it's harmless to include regardless. +GITIGNORE_MAINTAINERCLEANFILES_M4_LIBTOOL = \ + `MACRO_DIR=$(srcdir)/$$(cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_MACRO_DIR:$$1' ./configure.ac); \ + if test "x$$MACRO_DIR" != "x$(srcdir)/"; then \ + for x in \ + libtool.m4 \ + ltoptions.m4 \ + ltsugar.m4 \ + ltversion.m4 \ + lt~obsolete.m4 \ + ; do echo "$$MACRO_DIR/$$x"; done; \ + fi` +# +# Modules that use gettext and use AC_CONFIG_MACRO_DIR() may also include this, +# though it's harmless to include regardless. +GITIGNORE_MAINTAINERCLEANFILES_M4_GETTEXT = \ + `MACRO_DIR=$(srcdir)/$$(cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_MACRO_DIR:$$1' ./configure.ac); \ + if test "x$$MACRO_DIR" != "x$(srcdir)/"; then \ + for x in \ + codeset.m4 \ + extern-inline.m4 \ + fcntl-o.m4 \ + gettext.m4 \ + glibc2.m4 \ + glibc21.m4 \ + iconv.m4 \ + intdiv0.m4 \ + intl.m4 \ + intldir.m4 \ + intlmacosx.m4 \ + intmax.m4 \ + inttypes-pri.m4 \ + inttypes_h.m4 \ + lcmessage.m4 \ + lib-ld.m4 \ + lib-link.m4 \ + lib-prefix.m4 \ + lock.m4 \ + longlong.m4 \ + nls.m4 \ + po.m4 \ + printf-posix.m4 \ + progtest.m4 \ + size_max.m4 \ + stdint_h.m4 \ + threadlib.m4 \ + uintmax_t.m4 \ + visibility.m4 \ + wchar_t.m4 \ + wint_t.m4 \ + xsize.m4 \ + ; do echo "$$MACRO_DIR/$$x"; done; \ + fi` + + + +############################################################################### +# Default rule is to install ourselves in all Makefile.am files: +############################################################################### + +git-all: git-mk-install + +git-mk-install: + @echo "Installing git makefile" + @any_failed=; \ + find "`test -z "$(top_srcdir)" && echo . || echo "$(top_srcdir)"`" -name Makefile.am | while read x; do \ + if grep 'include .*/git.mk' $$x >/dev/null; then \ + echo "$$x already includes git.mk"; \ + else \ + failed=; \ + echo "Updating $$x"; \ + { cat $$x; \ + echo ''; \ + echo '-include $$(top_srcdir)/git.mk'; \ + } > $$x.tmp || failed=1; \ + if test x$$failed = x; then \ + mv $$x.tmp $$x || failed=1; \ + fi; \ + if test x$$failed = x; then : else \ + echo "Failed updating $$x"; >&2 \ + any_failed=1; \ + fi; \ + fi; done; test -z "$$any_failed" + +git-mk-update: + wget $(GIT_MK_URL) -O $(top_srcdir)/git.mk + +.PHONY: git-all git-mk-install git-mk-update + + + +############################################################################### +# Actual .gitignore generation: +############################################################################### + +$(srcdir)/.gitignore: Makefile.am $(top_srcdir)/git.mk $(top_srcdir)/configure.ac + @echo "git.mk: Generating $@" + @{ \ + if test "x$(DOC_MODULE)" = x -o "x$(DOC_MAIN_SGML_FILE)" = x; then :; else \ + for x in \ + $(DOC_MODULE)-decl-list.txt \ + $(DOC_MODULE)-decl.txt \ + tmpl/$(DOC_MODULE)-unused.sgml \ + "tmpl/*.bak" \ + $(REPORT_FILES) \ + $(DOC_MODULE).pdf \ + xml html \ + ; do echo "/$$x"; done; \ + FLAVOR=$$(cd $(top_srcdir); $(AUTOCONF) --trace 'GTK_DOC_CHECK:$$2' ./configure.ac); \ + case $$FLAVOR in *no-tmpl*) echo /tmpl;; esac; \ + if echo "$(SCAN_OPTIONS)" | grep -q "\-\-rebuild-types"; then \ + echo "/$(DOC_MODULE).types"; \ + fi; \ + if echo "$(SCAN_OPTIONS)" | grep -q "\-\-rebuild-sections"; then \ + echo "/$(DOC_MODULE)-sections.txt"; \ + fi; \ + if test "$(abs_srcdir)" != "$(abs_builddir)" ; then \ + for x in \ + $(SETUP_FILES) \ + $(DOC_MODULE).types \ + ; do echo "/$$x"; done; \ + fi; \ + fi; \ + if test "x$(DOC_MODULE)$(DOC_ID)" = x -o "x$(DOC_LINGUAS)" = x; then :; else \ + for lc in $(DOC_LINGUAS); do \ + for x in \ + $(if $(DOC_MODULE),$(DOC_MODULE).xml) \ + $(DOC_PAGES) \ + $(DOC_INCLUDES) \ + ; do echo "/$$lc/$$x"; done; \ + done; \ + for x in \ + $(_DOC_OMF_ALL) \ + $(_DOC_DSK_ALL) \ + $(_DOC_HTML_ALL) \ + $(_DOC_MOFILES) \ + $(DOC_H_FILE) \ + "*/.xml2po.mo" \ + "*/*.omf.out" \ + ; do echo /$$x; done; \ + fi; \ + if test "x$(HOTDOC)" = x; then :; else \ + $(foreach project, $(HOTDOC_PROJECTS),echo "/$(call HOTDOC_TARGET,$(project))"; \ + echo "/$(shell $(call HOTDOC_PROJECT_COMMAND,$(project)) --get-conf-path output)" ; \ + echo "/$(shell $(call HOTDOC_PROJECT_COMMAND,$(project)) --get-private-folder)" ; \ + ) \ + for x in \ + .hotdoc.d \ + ; do echo "/$$x"; done; \ + fi; \ + if test "x$(HELP_ID)" = x -o "x$(HELP_LINGUAS)" = x; then :; else \ + for lc in $(HELP_LINGUAS); do \ + for x in \ + $(HELP_FILES) \ + "$$lc.stamp" \ + "$$lc.mo" \ + ; do echo "/$$lc/$$x"; done; \ + done; \ + fi; \ + if test "x$(gsettings_SCHEMAS)" = x; then :; else \ + for x in \ + $(gsettings_SCHEMAS:.xml=.valid) \ + $(gsettings__enum_file) \ + ; do echo "/$$x"; done; \ + fi; \ + if test "x$(appdata_XML)" = x; then :; else \ + for x in \ + $(appdata_XML:.xml=.valid) \ + ; do echo "/$$x"; done; \ + fi; \ + if test "x$(appstream_XML)" = x; then :; else \ + for x in \ + $(appstream_XML:.xml=.valid) \ + ; do echo "/$$x"; done; \ + fi; \ + if test -f $(srcdir)/po/Makefile.in.in; then \ + for x in \ + ABOUT-NLS \ + po/Makefile.in.in \ + po/Makefile.in.in~ \ + po/Makefile.in \ + po/Makefile \ + po/Makevars.template \ + po/POTFILES \ + po/Rules-quot \ + po/stamp-it \ + po/stamp-po \ + po/.intltool-merge-cache \ + "po/*.gmo" \ + "po/*.header" \ + "po/*.mo" \ + "po/*.sed" \ + "po/*.sin" \ + po/$(GETTEXT_PACKAGE).pot \ + intltool-extract.in \ + intltool-merge.in \ + intltool-update.in \ + ; do echo "/$$x"; done; \ + fi; \ + if test -f $(srcdir)/configure; then \ + for x in \ + autom4te.cache \ + configure \ + config.h \ + stamp-h1 \ + libtool \ + config.lt \ + ; do echo "/$$x"; done; \ + fi; \ + if test "x$(DEJATOOL)" = x; then :; else \ + for x in \ + $(DEJATOOL) \ + ; do echo "/$$x.sum"; echo "/$$x.log"; done; \ + echo /site.exp; \ + fi; \ + if test "x$(am__dirstamp)" = x; then :; else \ + echo "$(am__dirstamp)"; \ + fi; \ + if test "x$(findstring libtool,$(LTCOMPILE))" = x -a "x$(findstring libtool,$(LTCXXCOMPILE))" = x -a "x$(GTKDOC_RUN)" = x; then :; else \ + for x in \ + "*.lo" \ + ".libs" "_libs" \ + ; do echo "$$x"; done; \ + fi; \ + for x in \ + .gitignore \ + $(GITIGNOREFILES) \ + $(CLEANFILES) \ + $(PROGRAMS) $(check_PROGRAMS) $(EXTRA_PROGRAMS) \ + $(LIBRARIES) $(check_LIBRARIES) $(EXTRA_LIBRARIES) \ + $(LTLIBRARIES) $(check_LTLIBRARIES) $(EXTRA_LTLIBRARIES) \ + so_locations \ + $(MOSTLYCLEANFILES) \ + $(TEST_LOGS) \ + $(TEST_LOGS:.log=.trs) \ + $(TEST_SUITE_LOG) \ + $(TESTS:=.test) \ + "*.gcda" \ + "*.gcno" \ + $(DISTCLEANFILES) \ + $(am__CONFIG_DISTCLEAN_FILES) \ + $(CONFIG_CLEAN_FILES) \ + TAGS ID GTAGS GRTAGS GSYMS GPATH tags \ + "*.tab.c" \ + $(MAINTAINERCLEANFILES) \ + $(BUILT_SOURCES) \ + $(patsubst %.vala,%.c,$(filter %.vala,$(SOURCES))) \ + $(filter %_vala.stamp,$(DIST_COMMON)) \ + $(filter %.vapi,$(DIST_COMMON)) \ + $(filter $(addprefix %,$(notdir $(patsubst %.vapi,%.h,$(filter %.vapi,$(DIST_COMMON))))),$(DIST_COMMON)) \ + Makefile \ + Makefile.in \ + "*.orig" \ + "*.rej" \ + "*.bak" \ + "*~" \ + ".*.sw[nop]" \ + ".dirstamp" \ + ; do echo "/$$x"; done; \ + for x in \ + "*.$(OBJEXT)" \ + $(DEPDIR) \ + ; do echo "$$x"; done; \ + } | \ + sed "s@^/`echo "$(srcdir)" | sed 's/\(.\)/[\1]/g'`/@/@" | \ + sed 's@/[.]/@/@g' | \ + LC_ALL=C sort | uniq > .gitignore.tmp && \ + (mv .gitignore.tmp $@ || (echo "WARNING: Cannot create $@ file; skipping"; \ + $(RM) .gitignore.tmp)); + +all: $(srcdir)/.gitignore gitignore-recurse-maybe +gitignore: $(srcdir)/.gitignore gitignore-recurse + +gitignore-recurse-maybe: + @for subdir in $(DIST_SUBDIRS); do \ + case " $(SUBDIRS) " in \ + *" $$subdir "*) :;; \ + *) test "$$subdir" = . -o -e "$$subdir/.git" || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) gitignore || echo "Skipping $$subdir");; \ + esac; \ + done +gitignore-recurse: + @for subdir in $(DIST_SUBDIRS); do \ + test "$$subdir" = . -o -e "$$subdir/.git" || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) gitignore || echo "Skipping $$subdir"); \ + done + +maintainer-clean: gitignore-clean +gitignore-clean: + -rm -f $(srcdir)/.gitignore + +.PHONY: gitignore-clean gitignore gitignore-recurse gitignore-recurse-maybe diff --git a/gfx/harfbuzz/harfbuzz.doap b/gfx/harfbuzz/harfbuzz.doap new file mode 100644 index 0000000000..2a5c0e62e6 --- /dev/null +++ b/gfx/harfbuzz/harfbuzz.doap @@ -0,0 +1,24 @@ + + + harfbuzz + Text shaping library + + + + + + + + + Behdad Esfahbod + + + + diff --git a/gfx/harfbuzz/moz.yaml b/gfx/harfbuzz/moz.yaml new file mode 100644 index 0000000000..494034f2b7 --- /dev/null +++ b/gfx/harfbuzz/moz.yaml @@ -0,0 +1,72 @@ +# Version of this schema +schema: 1 + +bugzilla: + # Bugzilla product and component for this directory and subdirectories + product: Core + component: "Graphics: Text" + +# Document the source of externally hosted code +origin: + + # Short name of the package/library + name: harfbuzz + + description: HarfBuzz is a text shaping engine. + + # Full URL for the package's homepage/etc + # Usually different from repository url + url: https://github.com/harfbuzz/harfbuzz + + # Human-readable identifier for this version/release + # Generally "version NNN", "tag SSS", "bookmark SSS" + release: 7.3.0 (2023-05-10T00:20:25+03:00). + + # Revision to pull in + # Must be a long or short commit SHA (long preferred) + revision: 7.3.0 + + # The package's license, where possible using the mnemonic from + # https://spdx.org/licenses/ + # Multiple licenses can be specified (as a YAML list) + # A "LICENSE" file must exist containing the full license text + license: MIT + license-file: COPYING + + notes: > + To test the upstream's main branch tip, one can + run `./mach vendor --revision tip gfx/harfbuzz/moz.yaml` + +vendoring: + url: https://github.com/harfbuzz/harfbuzz + source-hosting: github + tracking: tag + + include: + - AUTHORS + - autogen.sh + - configure.ac + - COPYING + - git.mk + - harfbuzz.doap + - Makefile.am + - NEWS + - README.md + - src + - THANKS + + exclude: + - "**" + - "**/.*" + - ".*" + - ".*/**" + - "src/test*" + - src/hb-ucdn + +updatebot: + maintainer-phab: jfkthame + maintainer-bz: jfkthame@gmail.com + fuzzy-query: "'crashtest | 'reftest !'print !'jsref" + tasks: + - type: vendoring + enabled: true diff --git a/gfx/harfbuzz/src/ArabicPUASimplified.txt b/gfx/harfbuzz/src/ArabicPUASimplified.txt new file mode 100644 index 0000000000..a74ef266fd --- /dev/null +++ b/gfx/harfbuzz/src/ArabicPUASimplified.txt @@ -0,0 +1,250 @@ +# +# Name: Legacy Simplified Arabic encoding +# +# Format: Three tab-separated columns +# Column #1 is the PUA code (in hex as 0xXXXX) +# Column #2 is the Unicode (in hex as 0xXXXX) +# Column #3 is the Unicode name (follows a comment sign, '#') +# +# The entries are in PUA order +# +0xF100 0x063B # ARABIC LETTER KEHEH WITH TWO DOTS ABOVE +0xF100 0x063C # ARABIC LETTER KEHEH WITH THREE DOTS BELOW +0xF100 0x063D # ARABIC LETTER FARSI YEH WITH INVERTED V +0xF100 0x063E # ARABIC LETTER FARSI YEH WITH TWO DOTS ABOVE +0xF100 0x063F # ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE +0xF100 0x0653 # ARABIC MADDAH ABOVE +0xF100 0x0654 # ARABIC HAMZA ABOVE +0xF100 0x0655 # ARABIC HAMZA BELOW +0xF100 0x0656 # ARABIC SUBSCRIPT ALEF +0xF100 0x0657 # ARABIC INVERTED DAMMA +0xF100 0x0658 # ARABIC MARK NOON GHUNNA +0xF100 0x0659 # ARABIC ZWARAKAY +0xF100 0x065A # ARABIC VOWEL SIGN SMALL V ABOVE +0xF100 0x065B # ARABIC VOWEL SIGN INVERTED SMALL V ABOVE +0xF100 0x065C # ARABIC VOWEL SIGN DOT BELOW +0xF100 0x065D # ARABIC REVERSED DAMMA +0xF100 0x065E # ARABIC FATHA WITH TWO DOTS +0xF10C 0x200C # ZERO WIDTH NON-JOINER +0xF10D 0x200D # ZERO WIDTH JOINER +0xF10E 0x200E # LEFT-TO-RIGHT MARK +0xF10F 0x200F # RIGHT-TO-LEFT MARK +0xF120 0x0020 # SPACE +0xF121 0x0021 # EXCLAMATION MARK +0xF122 0x0022 # QUOTATION MARK +0xF123 0x00AB # LEFT-POINTING DOUBLE ANGLE QUOTATION MARK +0xF124 0x00BB # RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK +0xF125 0x0025 # PERCENT SIGN +0xF126 0x00D7 # MULTIPLICATION SIGN +0xF127 0x00F7 # DIVISION SIGN +0xF128 0x0028 # LEFT PARENTHESIS +0xF129 0x0029 # RIGHT PARENTHESIS +0xF12A 0x002A # ASTERISK +0xF12B 0x002B # PLUS SIGN +0xF12C 0x060C # ARABIC COMMA +0xF12D 0x002D # HYPHEN-MINUS +0xF12E 0x002E # FULL STOP +0xF12F 0x002F # SOLIDUS +0xF130 0x0660 # ARABIC-INDIC DIGIT ZERO +0xF131 0x0661 # ARABIC-INDIC DIGIT ONE +0xF132 0x0662 # ARABIC-INDIC DIGIT TWO +0xF133 0x0663 # ARABIC-INDIC DIGIT THREE +0xF134 0x0664 # ARABIC-INDIC DIGIT FOUR +0xF135 0x0665 # ARABIC-INDIC DIGIT FIVE +0xF136 0x0666 # ARABIC-INDIC DIGIT SIX +0xF137 0x0667 # ARABIC-INDIC DIGIT SEVEN +0xF138 0x0668 # ARABIC-INDIC DIGIT EIGHT +0xF139 0x0669 # ARABIC-INDIC DIGIT NINE +0xF13A 0x003A # COLON +0xF13B 0x003B # SEMICOLON +0xF13B 0x061B # ARABIC SEMICOLON +0xF13C 0x2018 # LEFT SINGLE QUOTATION MARK +0xF13D 0x003D # EQUALS SIGN +0xF13E 0x2019 # RIGHT SINGLE QUOTATION MARK +0xF13F 0x003F # QUESTION MARK +0xF13F 0x061F # ARABIC QUESTION MARK +0xF141 0x0627 # ARABIC LETTER ALEF +0xF141 0xFE8D # ARABIC LETTER ALEF ISOLATED FORM +0xF142 0xFE8E # ARABIC LETTER ALEF FINAL FORM +0xF143 0x0623 # ARABIC LETTER ALEF WITH HAMZA ABOVE +0xF143 0xFE83 # ARABIC LETTER ALEF WITH HAMZA ABOVE ISOLATED FORM +0xF144 0xFE84 # ARABIC LETTER ALEF WITH HAMZA ABOVE FINAL FORM +0xF145 0x0622 # ARABIC LETTER ALEF WITH MADDA ABOVE +0xF145 0xFE81 # ARABIC LETTER ALEF WITH MADDA ABOVE ISOLATED FORM +0xF146 0xFE82 # ARABIC LETTER ALEF WITH MADDA ABOVE FINAL FORM +0xF147 0x0625 # ARABIC LETTER ALEF WITH HAMZA BELOW +0xF147 0xFE87 # ARABIC LETTER ALEF WITH HAMZA BELOW ISOLATED FORM +0xF148 0xFE88 # ARABIC LETTER ALEF WITH HAMZA BELOW FINAL FORM +0xF149 0xFE91 # ARABIC LETTER BEH INITIAL FORM +0xF149 0xFE92 # ARABIC LETTER BEH MEDIAL FORM +0xF14A 0x0628 # ARABIC LETTER BEH +0xF14A 0xFE8F # ARABIC LETTER BEH ISOLATED FORM +0xF14A 0xFE90 # ARABIC LETTER BEH FINAL FORM +0xF14B 0xFE97 # ARABIC LETTER TEH INITIAL FORM +0xF14B 0xFE98 # ARABIC LETTER TEH MEDIAL FORM +0xF14C 0x062A # ARABIC LETTER TEH +0xF14C 0xFE95 # ARABIC LETTER TEH ISOLATED FORM +0xF14C 0xFE96 # ARABIC LETTER TEH FINAL FORM +0xF14D 0xFE9B # ARABIC LETTER THEH INITIAL FORM +0xF14D 0xFE9C # ARABIC LETTER THEH MEDIAL FORM +0xF14E 0x062B # ARABIC LETTER THEH +0xF14E 0xFE99 # ARABIC LETTER THEH ISOLATED FORM +0xF14E 0xFE9A # ARABIC LETTER THEH FINAL FORM +0xF14F 0xFE9F # ARABIC LETTER JEEM INITIAL FORM +0xF14F 0xFEA0 # ARABIC LETTER JEEM MEDIAL FORM +0xF150 0xFE9E # ARABIC LETTER JEEM FINAL FORM +0xF151 0x062C # ARABIC LETTER JEEM +0xF151 0xFE9D # ARABIC LETTER JEEM ISOLATED FORM +0xF152 0xFEA3 # ARABIC LETTER HAH INITIAL FORM +0xF152 0xFEA4 # ARABIC LETTER HAH MEDIAL FORM +0xF153 0xFEA2 # ARABIC LETTER HAH FINAL FORM +0xF154 0x062D # ARABIC LETTER HAH +0xF154 0xFEA1 # ARABIC LETTER HAH ISOLATED FORM +0xF155 0xFEA7 # ARABIC LETTER KHAH INITIAL FORM +0xF155 0xFEA8 # ARABIC LETTER KHAH MEDIAL FORM +0xF156 0xFEA6 # ARABIC LETTER KHAH FINAL FORM +0xF157 0x062E # ARABIC LETTER KHAH +0xF157 0xFEA5 # ARABIC LETTER KHAH ISOLATED FORM +0xF158 0x062F # ARABIC LETTER DAL +0xF158 0xFEA9 # ARABIC LETTER DAL ISOLATED FORM +0xF158 0xFEAA # ARABIC LETTER DAL FINAL FORM +0xF159 0x0630 # ARABIC LETTER THAL +0xF159 0xFEAB # ARABIC LETTER THAL ISOLATED FORM +0xF159 0xFEAC # ARABIC LETTER THAL FINAL FORM +0xF15A 0x0631 # ARABIC LETTER REH +0xF15A 0xFEAD # ARABIC LETTER REH ISOLATED FORM +0xF15A 0xFEAE # ARABIC LETTER REH FINAL FORM +0xF15B 0x005B # LEFT SQUARE BRACKET +0xF15C 0x005C # REVERSE SOLIDUS +0xF15D 0x005D # RIGHT SQUARE BRACKET +0xF15E 0x002C # COMMA +0xF15E 0x066B # ARABIC DECIMAL SEPARATOR +0xF15E 0x066C # ARABIC THOUSANDS SEPARATOR +0xF15F 0x0640 # ARABIC TATWEEL +0xF160 0x0632 # ARABIC LETTER ZAIN +0xF160 0xFEAF # ARABIC LETTER ZAIN ISOLATED FORM +0xF160 0xFEB0 # ARABIC LETTER ZAIN FINAL FORM +0xF161 0xFEB3 # ARABIC LETTER SEEN INITIAL FORM +0xF161 0xFEB4 # ARABIC LETTER SEEN MEDIAL FORM +0xF162 0x0633 # ARABIC LETTER SEEN +0xF162 0xFEB1 # ARABIC LETTER SEEN ISOLATED FORM +0xF162 0xFEB2 # ARABIC LETTER SEEN FINAL FORM +0xF163 0xFEB7 # ARABIC LETTER SHEEN INITIAL FORM +0xF163 0xFEB8 # ARABIC LETTER SHEEN MEDIAL FORM +0xF164 0x0634 # ARABIC LETTER SHEEN +0xF164 0xFEB5 # ARABIC LETTER SHEEN ISOLATED FORM +0xF164 0xFEB6 # ARABIC LETTER SHEEN FINAL FORM +0xF165 0xFEBB # ARABIC LETTER SAD INITIAL FORM +0xF165 0xFEBC # ARABIC LETTER SAD MEDIAL FORM +0xF166 0x0635 # ARABIC LETTER SAD +0xF166 0xFEB9 # ARABIC LETTER SAD ISOLATED FORM +0xF166 0xFEBA # ARABIC LETTER SAD FINAL FORM +0xF167 0xFEBF # ARABIC LETTER DAD INITIAL FORM +0xF167 0xFEC0 # ARABIC LETTER DAD MEDIAL FORM +0xF168 0x0636 # ARABIC LETTER DAD +0xF168 0xFEBD # ARABIC LETTER DAD ISOLATED FORM +0xF168 0xFEBE # ARABIC LETTER DAD FINAL FORM +0xF169 0x0637 # ARABIC LETTER TAH +0xF169 0xFEC1 # ARABIC LETTER TAH ISOLATED FORM +0xF169 0xFEC2 # ARABIC LETTER TAH FINAL FORM +0xF169 0xFEC3 # ARABIC LETTER TAH INITIAL FORM +0xF169 0xFEC4 # ARABIC LETTER TAH MEDIAL FORM +0xF16A 0x0638 # ARABIC LETTER ZAH +0xF16A 0xFEC5 # ARABIC LETTER ZAH ISOLATED FORM +0xF16A 0xFEC6 # ARABIC LETTER ZAH FINAL FORM +0xF16A 0xFEC7 # ARABIC LETTER ZAH INITIAL FORM +0xF16A 0xFEC8 # ARABIC LETTER ZAH MEDIAL FORM +0xF16B 0xFECB # ARABIC LETTER AIN INITIAL FORM +0xF16C 0xFECC # ARABIC LETTER AIN MEDIAL FORM +0xF16D 0xFECA # ARABIC LETTER AIN FINAL FORM +0xF16E 0x0639 # ARABIC LETTER AIN +0xF16E 0xFEC9 # ARABIC LETTER AIN ISOLATED FORM +0xF16F 0xFECF # ARABIC LETTER GHAIN INITIAL FORM +0xF170 0xFED0 # ARABIC LETTER GHAIN MEDIAL FORM +0xF171 0xFECE # ARABIC LETTER GHAIN FINAL FORM +0xF172 0x063A # ARABIC LETTER GHAIN +0xF172 0xFECD # ARABIC LETTER GHAIN ISOLATED FORM +0xF173 0xFED3 # ARABIC LETTER FEH INITIAL FORM +0xF174 0xFED4 # ARABIC LETTER FEH MEDIAL FORM +0xF175 0x0641 # ARABIC LETTER FEH +0xF175 0xFED1 # ARABIC LETTER FEH ISOLATED FORM +0xF175 0xFED2 # ARABIC LETTER FEH FINAL FORM +0xF176 0xFED7 # ARABIC LETTER QAF INITIAL FORM +0xF177 0xFED8 # ARABIC LETTER QAF MEDIAL FORM +0xF178 0x0642 # ARABIC LETTER QAF +0xF178 0xFED5 # ARABIC LETTER QAF ISOLATED FORM +0xF178 0xFED6 # ARABIC LETTER QAF FINAL FORM +0xF179 0xFEDB # ARABIC LETTER KAF INITIAL FORM +0xF179 0xFEDC # ARABIC LETTER KAF MEDIAL FORM +0xF17A 0x0643 # ARABIC LETTER KAF +0xF17A 0xFED9 # ARABIC LETTER KAF ISOLATED FORM +0xF17A 0xFEDA # ARABIC LETTER KAF FINAL FORM +0xF17B 0xFEDF # ARABIC LETTER LAM INITIAL FORM +0xF17B 0xFEE0 # ARABIC LETTER LAM MEDIAL FORM +0xF17C 0x0644 # ARABIC LETTER LAM +0xF17C 0xFEDD # ARABIC LETTER LAM ISOLATED FORM +0xF17C 0xFEDE # ARABIC LETTER LAM FINAL FORM +0xF17D 0xFEE3 # ARABIC LETTER MEEM INITIAL FORM +0xF17D 0xFEE4 # ARABIC LETTER MEEM MEDIAL FORM +0xF17E 0x0645 # ARABIC LETTER MEEM +0xF17E 0xFEE1 # ARABIC LETTER MEEM ISOLATED FORM +0xF17E 0xFEE2 # ARABIC LETTER MEEM FINAL FORM +0xF17F 0xFEE7 # ARABIC LETTER NOON INITIAL FORM +0xF17F 0xFEE8 # ARABIC LETTER NOON MEDIAL FORM +0xF1A1 0xFEEB # ARABIC LETTER HEH INITIAL FORM +0xF1A2 0xFEEC # ARABIC LETTER HEH MEDIAL FORM +0xF1A3 0xFEEA # ARABIC LETTER HEH FINAL FORM +0xF1A4 0x0647 # ARABIC LETTER HEH +0xF1A4 0xFEE9 # ARABIC LETTER HEH ISOLATED FORM +0xF1A5 0x0648 # ARABIC LETTER WAW +0xF1A5 0xFEED # ARABIC LETTER WAW ISOLATED FORM +0xF1A5 0xFEEE # ARABIC LETTER WAW FINAL FORM +0xF1A6 0xFEF3 # ARABIC LETTER YEH INITIAL FORM +0xF1A6 0xFEF4 # ARABIC LETTER YEH MEDIAL FORM +0xF1A7 0xFEF2 # ARABIC LETTER YEH FINAL FORM +0xF1A8 0x064A # ARABIC LETTER YEH +0xF1A8 0xFEF1 # ARABIC LETTER YEH ISOLATED FORM +0xF1A9 0x0629 # ARABIC LETTER TEH MARBUTA +0xF1A9 0xFE93 # ARABIC LETTER TEH MARBUTA ISOLATED FORM +0xF1AA 0xFE94 # ARABIC LETTER TEH MARBUTA FINAL FORM +0xF1AB 0xFEF0 # ARABIC LETTER ALEF MAKSURA FINAL FORM +0xF1AC 0x0649 # ARABIC LETTER ALEF MAKSURA +0xF1AC 0xFEEF # ARABIC LETTER ALEF MAKSURA ISOLATED FORM +0xF1AD 0x0621 # ARABIC LETTER HAMZA +0xF1AE 0xFE8B # ARABIC LETTER YEH WITH HAMZA ABOVE INITIAL FORM +0xF1AE 0xFE8C # ARABIC LETTER YEH WITH HAMZA ABOVE MEDIAL FORM +0xF1AF 0xFE8A # ARABIC LETTER YEH WITH HAMZA ABOVE FINAL FORM +0xF1B0 0x0030 # DIGIT ZERO +0xF1B1 0x0031 # DIGIT ONE +0xF1B2 0x0032 # DIGIT TWO +0xF1B3 0x0033 # DIGIT THREE +0xF1B4 0x0034 # DIGIT FOUR +0xF1B5 0x0035 # DIGIT FIVE +0xF1B6 0x0036 # DIGIT SIX +0xF1B7 0x0037 # DIGIT SEVEN +0xF1B8 0x0038 # DIGIT EIGHT +0xF1B9 0x0039 # DIGIT NINE +0xF1BA 0x0626 # ARABIC LETTER YEH WITH HAMZA ABOVE +0xF1BA 0xFE89 # ARABIC LETTER YEH WITH HAMZA ABOVE ISOLATED FORM +0xF1BB 0x0624 # ARABIC LETTER WAW WITH HAMZA ABOVE +0xF1BB 0xFE85 # ARABIC LETTER WAW WITH HAMZA ABOVE ISOLATED FORM +0xF1BB 0xFE86 # ARABIC LETTER WAW WITH HAMZA ABOVE FINAL FORM +0xF1BC 0xFEFC # ARABIC LIGATURE LAM WITH ALEF FINAL FORM +0xF1BD 0xFEFB # ARABIC LIGATURE LAM WITH ALEF ISOLATED FORM +0xF1BE 0xFEF7 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE ISOLATED FORM +0xF1BF 0xFEF8 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE FINAL FORM +0xF1C0 0xFEF5 # ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE ISOLATED FORM +0xF1C1 0xFEF6 # ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE FINAL FORM +0xF1C2 0xFEF9 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW ISOLATED FORM +0xF1C3 0xFEFA # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW FINAL FORM +0xF1C4 0x064E # ARABIC FATHA +0xF1C5 0x064F # ARABIC DAMMA +0xF1C6 0x0652 # ARABIC SUKUN +0xF1C7 0x064B # ARABIC FATHATAN +0xF1C8 0x064C # ARABIC DAMMATAN +0xF1C9 0x0651 # ARABIC SHADDA +0xF1CA 0x0650 # ARABIC KASRA +0xF1CB 0x064D # ARABIC KASRATAN +0xF1E1 0x0646 # ARABIC LETTER NOON +0xF1E1 0xFEE5 # ARABIC LETTER NOON ISOLATED FORM +0xF1E1 0xFEE6 # ARABIC LETTER NOON FINAL FORM diff --git a/gfx/harfbuzz/src/ArabicPUATraditional.txt b/gfx/harfbuzz/src/ArabicPUATraditional.txt new file mode 100644 index 0000000000..e14b383c98 --- /dev/null +++ b/gfx/harfbuzz/src/ArabicPUATraditional.txt @@ -0,0 +1,295 @@ +# +# Name: Legacy Traditional Arabic encoding +# +# Format: Three tab-separated columns +# Column #1 is the PUA code (in hex as 0xXXXX) +# Column #2 is the Unicode (in hex as 0xXXXX) +# Column #3 is the Unicode name (follows a comment sign, '#') +# +# The entries are in PUA order +# +0xF200 0x063B # ARABIC LETTER KEHEH WITH TWO DOTS ABOVE +0xF200 0x063C # ARABIC LETTER KEHEH WITH THREE DOTS BELOW +0xF200 0x063D # ARABIC LETTER FARSI YEH WITH INVERTED V +0xF200 0x063E # ARABIC LETTER FARSI YEH WITH TWO DOTS ABOVE +0xF200 0x063F # ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE +0xF200 0x0653 # ARABIC MADDAH ABOVE +0xF200 0x0654 # ARABIC HAMZA ABOVE +0xF200 0x0655 # ARABIC HAMZA BELOW +0xF200 0x0656 # ARABIC SUBSCRIPT ALEF +0xF200 0x0657 # ARABIC INVERTED DAMMA +0xF200 0x0658 # ARABIC MARK NOON GHUNNA +0xF200 0x0659 # ARABIC ZWARAKAY +0xF200 0x065A # ARABIC VOWEL SIGN SMALL V ABOVE +0xF200 0x065B # ARABIC VOWEL SIGN INVERTED SMALL V ABOVE +0xF200 0x065C # ARABIC VOWEL SIGN DOT BELOW +0xF200 0x065D # ARABIC REVERSED DAMMA +0xF200 0x065E # ARABIC FATHA WITH TWO DOTS +0xF202 0xFC08 # ARABIC LIGATURE BEH WITH MEEM ISOLATED FORM +0xF203 0xFC0E # ARABIC LIGATURE TEH WITH MEEM ISOLATED FORM +0xF204 0xFC12 # ARABIC LIGATURE THEH WITH MEEM ISOLATED FORM +0xF205 0xFC42 # ARABIC LIGATURE LAM WITH MEEM ISOLATED FORM +0xF206 0xFC4E # ARABIC LIGATURE NOON WITH MEEM ISOLATED FORM +0xF20C 0x200C # ZERO WIDTH NON-JOINER +0xF20D 0x200D # ZERO WIDTH JOINER +0xF20E 0x200E # LEFT-TO-RIGHT MARK +0xF20F 0x200F # RIGHT-TO-LEFT MARK +0xF210 0xFD88 # ARABIC LIGATURE LAM WITH MEEM WITH HAH INITIAL FORM +0xF212 0xFC3F # ARABIC LIGATURE LAM WITH JEEM ISOLATED FORM +0xF213 0xFC40 # ARABIC LIGATURE LAM WITH HAH ISOLATED FORM +0xF214 0xFC41 # ARABIC LIGATURE LAM WITH KHAH ISOLATED FORM +0xF215 0xFC6A # ARABIC LIGATURE BEH WITH REH FINAL FORM +0xF216 0xFC70 # ARABIC LIGATURE TEH WITH REH FINAL FORM +0xF217 0xFC91 # ARABIC LIGATURE YEH WITH REH FINAL FORM +0xF218 0xFCB0 # ARABIC LIGATURE SEEN WITH MEEM INITIAL FORM +0xF219 0xFD30 # ARABIC LIGATURE SHEEN WITH MEEM INITIAL FORM +0xF21A 0xFCCD # ARABIC LIGATURE LAM WITH HEH INITIAL FORM +0xF21C 0xFC44 # ARABIC LIGATURE LAM WITH YEH ISOLATED FORM +0xF21D 0xFC0A # ARABIC LIGATURE BEH WITH YEH ISOLATED FORM +0xF21E 0xFC10 # ARABIC LIGATURE TEH WITH YEH ISOLATED FORM +0xF21F 0xFC50 # ARABIC LIGATURE NOON WITH YEH ISOLATED FORM +0xF220 0x0020 # SPACE +0xF221 0x0021 # EXCLAMATION MARK +0xF222 0x0022 # QUOTATION MARK +0xF223 0x00AB # LEFT-POINTING DOUBLE ANGLE QUOTATION MARK +0xF224 0x00BB # RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK +0xF225 0x0025 # PERCENT SIGN +0xF226 0x00D7 # MULTIPLICATION SIGN +0xF227 0x00F7 # DIVISION SIGN +0xF228 0x0028 # LEFT PARENTHESIS +0xF229 0x0029 # RIGHT PARENTHESIS +0xF22A 0x002A # ASTERISK +0xF22B 0x002B # PLUS SIGN +0xF22C 0x060C # ARABIC COMMA +0xF22D 0x002D # HYPHEN-MINUS +0xF22E 0x002E # FULL STOP +0xF22F 0x002F # SOLIDUS +0xF230 0x0660 # ARABIC-INDIC DIGIT ZERO +0xF231 0x0661 # ARABIC-INDIC DIGIT ONE +0xF232 0x0662 # ARABIC-INDIC DIGIT TWO +0xF233 0x0663 # ARABIC-INDIC DIGIT THREE +0xF234 0x0664 # ARABIC-INDIC DIGIT FOUR +0xF235 0x0665 # ARABIC-INDIC DIGIT FIVE +0xF236 0x0666 # ARABIC-INDIC DIGIT SIX +0xF237 0x0667 # ARABIC-INDIC DIGIT SEVEN +0xF238 0x0668 # ARABIC-INDIC DIGIT EIGHT +0xF239 0x0669 # ARABIC-INDIC DIGIT NINE +0xF23A 0x003A # COLON +0xF23B 0x003B # SEMICOLON +0xF23B 0x061B # ARABIC SEMICOLON +0xF23C 0x201C # LEFT DOUBLE QUOTATION MARK +0xF23D 0x003D # EQUALS SIGN +0xF23E 0x201D # RIGHT DOUBLE QUOTATION MARK +0xF23F 0x003F # QUESTION MARK +0xF23F 0x061F # ARABIC QUESTION MARK +0xF241 0x0627 # ARABIC LETTER ALEF +0xF241 0xFE8D # ARABIC LETTER ALEF ISOLATED FORM +0xF242 0xFE8E # ARABIC LETTER ALEF FINAL FORM +0xF243 0x0623 # ARABIC LETTER ALEF WITH HAMZA ABOVE +0xF243 0xFE83 # ARABIC LETTER ALEF WITH HAMZA ABOVE ISOLATED FORM +0xF244 0xFE84 # ARABIC LETTER ALEF WITH HAMZA ABOVE FINAL FORM +0xF245 0x0622 # ARABIC LETTER ALEF WITH MADDA ABOVE +0xF245 0xFE81 # ARABIC LETTER ALEF WITH MADDA ABOVE ISOLATED FORM +0xF246 0xFE82 # ARABIC LETTER ALEF WITH MADDA ABOVE FINAL FORM +0xF247 0x0625 # ARABIC LETTER ALEF WITH HAMZA BELOW +0xF247 0xFE87 # ARABIC LETTER ALEF WITH HAMZA BELOW ISOLATED FORM +0xF248 0xFE88 # ARABIC LETTER ALEF WITH HAMZA BELOW FINAL FORM +0xF249 0xFE91 # ARABIC LETTER BEH INITIAL FORM +0xF24A 0xFE92 # ARABIC LETTER BEH MEDIAL FORM +0xF24B 0xFE90 # ARABIC LETTER BEH FINAL FORM +0xF24C 0x0628 # ARABIC LETTER BEH +0xF24C 0xFE8F # ARABIC LETTER BEH ISOLATED FORM +0xF24D 0xFE97 # ARABIC LETTER TEH INITIAL FORM +0xF24E 0xFE98 # ARABIC LETTER TEH MEDIAL FORM +0xF24F 0xFE96 # ARABIC LETTER TEH FINAL FORM +0xF250 0x062A # ARABIC LETTER TEH +0xF250 0xFE95 # ARABIC LETTER TEH ISOLATED FORM +0xF251 0xFE9B # ARABIC LETTER THEH INITIAL FORM +0xF252 0xFE9C # ARABIC LETTER THEH MEDIAL FORM +0xF253 0xFE9A # ARABIC LETTER THEH FINAL FORM +0xF254 0x062B # ARABIC LETTER THEH +0xF254 0xFE99 # ARABIC LETTER THEH ISOLATED FORM +0xF255 0xFE9F # ARABIC LETTER JEEM INITIAL FORM +0xF256 0xFEA0 # ARABIC LETTER JEEM MEDIAL FORM +0xF257 0xFE9E # ARABIC LETTER JEEM FINAL FORM +0xF258 0x062C # ARABIC LETTER JEEM +0xF258 0xFE9D # ARABIC LETTER JEEM ISOLATED FORM +0xF259 0xFEA3 # ARABIC LETTER HAH INITIAL FORM +0xF25A 0xFEA4 # ARABIC LETTER HAH MEDIAL FORM +0xF25B 0x005B # LEFT SQUARE BRACKET +0xF25C 0xFEA2 # ARABIC LETTER HAH FINAL FORM +0xF25D 0x005D # RIGHT SQUARE BRACKET +0xF25E 0x002C # COMMA +0xF25E 0x066B # ARABIC DECIMAL SEPARATOR +0xF25E 0x066C # ARABIC THOUSANDS SEPARATOR +0xF25F 0x0640 # ARABIC TATWEEL +0xF260 0x062D # ARABIC LETTER HAH +0xF260 0xFEA1 # ARABIC LETTER HAH ISOLATED FORM +0xF261 0xFEA7 # ARABIC LETTER KHAH INITIAL FORM +0xF262 0xFEA8 # ARABIC LETTER KHAH MEDIAL FORM +0xF263 0xFEA6 # ARABIC LETTER KHAH FINAL FORM +0xF264 0x062E # ARABIC LETTER KHAH +0xF264 0xFEA5 # ARABIC LETTER KHAH ISOLATED FORM +0xF265 0x062F # ARABIC LETTER DAL +0xF265 0xFEA9 # ARABIC LETTER DAL ISOLATED FORM +0xF266 0xFEAA # ARABIC LETTER DAL FINAL FORM +0xF267 0x0630 # ARABIC LETTER THAL +0xF267 0xFEAB # ARABIC LETTER THAL ISOLATED FORM +0xF268 0xFEAC # ARABIC LETTER THAL FINAL FORM +0xF269 0x0631 # ARABIC LETTER REH +0xF269 0xFEAD # ARABIC LETTER REH ISOLATED FORM +0xF26A 0xFEAE # ARABIC LETTER REH FINAL FORM +0xF26B 0x0632 # ARABIC LETTER ZAIN +0xF26B 0xFEAF # ARABIC LETTER ZAIN ISOLATED FORM +0xF26C 0xFEB0 # ARABIC LETTER ZAIN FINAL FORM +0xF26D 0xFEB3 # ARABIC LETTER SEEN INITIAL FORM +0xF26E 0xFEB4 # ARABIC LETTER SEEN MEDIAL FORM +0xF26F 0xFEB2 # ARABIC LETTER SEEN FINAL FORM +0xF270 0x0633 # ARABIC LETTER SEEN +0xF270 0xFEB1 # ARABIC LETTER SEEN ISOLATED FORM +0xF271 0xFEB7 # ARABIC LETTER SHEEN INITIAL FORM +0xF272 0xFEB8 # ARABIC LETTER SHEEN MEDIAL FORM +0xF273 0xFEB6 # ARABIC LETTER SHEEN FINAL FORM +0xF274 0x0634 # ARABIC LETTER SHEEN +0xF274 0xFEB5 # ARABIC LETTER SHEEN ISOLATED FORM +0xF275 0xFEBB # ARABIC LETTER SAD INITIAL FORM +0xF276 0xFEBC # ARABIC LETTER SAD MEDIAL FORM +0xF277 0xFEBA # ARABIC LETTER SAD FINAL FORM +0xF278 0x0635 # ARABIC LETTER SAD +0xF278 0xFEB9 # ARABIC LETTER SAD ISOLATED FORM +0xF279 0xFEBF # ARABIC LETTER DAD INITIAL FORM +0xF27A 0xFEC0 # ARABIC LETTER DAD MEDIAL FORM +0xF27B 0xFD3E # ORNATE LEFT PARENTHESIS +0xF27C 0xFEBE # ARABIC LETTER DAD FINAL FORM +0xF27D 0xFD3F # ORNATE RIGHT PARENTHESIS +0xF27E 0x0636 # ARABIC LETTER DAD +0xF27E 0xFEBD # ARABIC LETTER DAD ISOLATED FORM +0xF27F 0xFEC3 # ARABIC LETTER TAH INITIAL FORM +0xF280 0xFC9C # ARABIC LIGATURE BEH WITH JEEM INITIAL FORM +0xF281 0xFC9D # ARABIC LIGATURE BEH WITH HAH INITIAL FORM +0xF282 0xFC9E # ARABIC LIGATURE BEH WITH KHAH INITIAL FORM +0xF283 0xFCA1 # ARABIC LIGATURE TEH WITH JEEM INITIAL FORM +0xF284 0xFCA2 # ARABIC LIGATURE TEH WITH HAH INITIAL FORM +0xF285 0xFCA3 # ARABIC LIGATURE TEH WITH KHAH INITIAL FORM +0xF286 0xFCC9 # ARABIC LIGATURE LAM WITH JEEM INITIAL FORM +0xF287 0xFCCA # ARABIC LIGATURE LAM WITH HAH INITIAL FORM +0xF288 0xFCCB # ARABIC LIGATURE LAM WITH KHAH INITIAL FORM +0xF289 0xFCCE # ARABIC LIGATURE MEEM WITH JEEM INITIAL FORM +0xF28A 0xFCCF # ARABIC LIGATURE MEEM WITH HAH INITIAL FORM +0xF28B 0xFCD0 # ARABIC LIGATURE MEEM WITH KHAH INITIAL FORM +0xF28D 0xFCD2 # ARABIC LIGATURE NOON WITH JEEM INITIAL FORM +0xF28E 0xFCD3 # ARABIC LIGATURE NOON WITH HAH INITIAL FORM +0xF28F 0xFCDA # ARABIC LIGATURE YEH WITH JEEM INITIAL FORM +0xF290 0xFCDB # ARABIC LIGATURE YEH WITH HAH INITIAL FORM +0xF291 0xFCDC # ARABIC LIGATURE YEH WITH KHAH INITIAL FORM +0xF292 0xFC6D # ARABIC LIGATURE BEH WITH NOON FINAL FORM +0xF293 0xFC73 # ARABIC LIGATURE TEH WITH NOON FINAL FORM +0xF294 0xFC94 # ARABIC LIGATURE YEH WITH NOON FINAL FORM +0xF295 0xFC86 # ARABIC LIGATURE LAM WITH ALEF MAKSURA FINAL FORM +0xF296 0xFC9F # ARABIC LIGATURE BEH WITH MEEM INITIAL FORM +0xF297 0xFCA4 # ARABIC LIGATURE TEH WITH MEEM INITIAL FORM +0xF298 0xFCD5 # ARABIC LIGATURE NOON WITH MEEM INITIAL FORM +0xF299 0xFCDD # ARABIC LIGATURE YEH WITH MEEM INITIAL FORM +0xF29A 0xFCA8 # ARABIC LIGATURE JEEM WITH MEEM INITIAL FORM +0xF29B 0xFCAA # ARABIC LIGATURE HAH WITH MEEM INITIAL FORM +0xF29C 0xFCAC # ARABIC LIGATURE KHAH WITH MEEM INITIAL FORM +0xF29D 0xFCCC # ARABIC LIGATURE LAM WITH MEEM INITIAL FORM +0xF29E 0xFCD1 # ARABIC LIGATURE MEEM WITH MEEM INITIAL FORM +0xF29F 0xFC32 # ARABIC LIGATURE FEH WITH YEH ISOLATED FORM +0xF2A1 0xFEC2 # ARABIC LETTER TAH FINAL FORM +0xF2A2 0x0637 # ARABIC LETTER TAH +0xF2A2 0xFEC1 # ARABIC LETTER TAH ISOLATED FORM +0xF2A3 0x0638 # ARABIC LETTER ZAH +0xF2A3 0xFEC7 # ARABIC LETTER ZAH INITIAL FORM +0xF2A4 0xFEC8 # ARABIC LETTER ZAH MEDIAL FORM +0xF2A5 0xFEC6 # ARABIC LETTER ZAH FINAL FORM +0xF2A6 0xFEC5 # ARABIC LETTER ZAH ISOLATED FORM +0xF2A7 0xFECB # ARABIC LETTER AIN INITIAL FORM +0xF2A8 0xFECC # ARABIC LETTER AIN MEDIAL FORM +0xF2A9 0xFECA # ARABIC LETTER AIN FINAL FORM +0xF2AA 0x0639 # ARABIC LETTER AIN +0xF2AA 0xFEC9 # ARABIC LETTER AIN ISOLATED FORM +0xF2AB 0xFECF # ARABIC LETTER GHAIN INITIAL FORM +0xF2AC 0xFED0 # ARABIC LETTER GHAIN MEDIAL FORM +0xF2AD 0xFECE # ARABIC LETTER GHAIN FINAL FORM +0xF2AE 0x063A # ARABIC LETTER GHAIN +0xF2AE 0xFECD # ARABIC LETTER GHAIN ISOLATED FORM +0xF2AF 0xFED3 # ARABIC LETTER FEH INITIAL FORM +0xF2B0 0xFED4 # ARABIC LETTER FEH MEDIAL FORM +0xF2B1 0xFED2 # ARABIC LETTER FEH FINAL FORM +0xF2B2 0x0641 # ARABIC LETTER FEH +0xF2B2 0xFED1 # ARABIC LETTER FEH ISOLATED FORM +0xF2B3 0xFED7 # ARABIC LETTER QAF INITIAL FORM +0xF2B4 0xFED8 # ARABIC LETTER QAF MEDIAL FORM +0xF2B5 0xFED6 # ARABIC LETTER QAF FINAL FORM +0xF2B6 0x0642 # ARABIC LETTER QAF +0xF2B6 0xFED5 # ARABIC LETTER QAF ISOLATED FORM +0xF2B7 0xFEDB # ARABIC LETTER KAF INITIAL FORM +0xF2B8 0xFEDC # ARABIC LETTER KAF MEDIAL FORM +0xF2B9 0xFEDA # ARABIC LETTER KAF FINAL FORM +0xF2BA 0x0643 # ARABIC LETTER KAF +0xF2BA 0xFED9 # ARABIC LETTER KAF ISOLATED FORM +0xF2BB 0xFEDF # ARABIC LETTER LAM INITIAL FORM +0xF2BC 0xFEE0 # ARABIC LETTER LAM MEDIAL FORM +0xF2BD 0xFEDE # ARABIC LETTER LAM FINAL FORM +0xF2BE 0x0644 # ARABIC LETTER LAM +0xF2BE 0xFEDD # ARABIC LETTER LAM ISOLATED FORM +0xF2BF 0xFEE3 # ARABIC LETTER MEEM INITIAL FORM +0xF2C0 0xFEE4 # ARABIC LETTER MEEM MEDIAL FORM +0xF2C1 0xFEE2 # ARABIC LETTER MEEM FINAL FORM +0xF2C2 0x0645 # ARABIC LETTER MEEM +0xF2C2 0xFEE1 # ARABIC LETTER MEEM ISOLATED FORM +0xF2C3 0xFEE7 # ARABIC LETTER NOON INITIAL FORM +0xF2C4 0xFEE8 # ARABIC LETTER NOON MEDIAL FORM +0xF2C5 0xFEE6 # ARABIC LETTER NOON FINAL FORM +0xF2C6 0x0646 # ARABIC LETTER NOON +0xF2C6 0xFEE5 # ARABIC LETTER NOON ISOLATED FORM +0xF2C7 0xFEEB # ARABIC LETTER HEH INITIAL FORM +0xF2C8 0xFEEC # ARABIC LETTER HEH MEDIAL FORM +0xF2C9 0xFEEA # ARABIC LETTER HEH FINAL FORM +0xF2CA 0x0647 # ARABIC LETTER HEH +0xF2CA 0xFEE9 # ARABIC LETTER HEH ISOLATED FORM +0xF2CB 0x0648 # ARABIC LETTER WAW +0xF2CB 0xFEED # ARABIC LETTER WAW ISOLATED FORM +0xF2CC 0xFEEE # ARABIC LETTER WAW FINAL FORM +0xF2CD 0xFEF3 # ARABIC LETTER YEH INITIAL FORM +0xF2CE 0xFEF4 # ARABIC LETTER YEH MEDIAL FORM +0xF2CF 0xFEF2 # ARABIC LETTER YEH FINAL FORM +0xF2D0 0x064A # ARABIC LETTER YEH +0xF2D0 0xFEF1 # ARABIC LETTER YEH ISOLATED FORM +0xF2D1 0x0629 # ARABIC LETTER TEH MARBUTA +0xF2D1 0xFE93 # ARABIC LETTER TEH MARBUTA ISOLATED FORM +0xF2D2 0xFE94 # ARABIC LETTER TEH MARBUTA FINAL FORM +0xF2D3 0xFEF0 # ARABIC LETTER ALEF MAKSURA FINAL FORM +0xF2D4 0x0649 # ARABIC LETTER ALEF MAKSURA +0xF2D4 0xFEEF # ARABIC LETTER ALEF MAKSURA ISOLATED FORM +0xF2D5 0x0621 # ARABIC LETTER HAMZA +0xF2D6 0xFE8B # ARABIC LETTER YEH WITH HAMZA ABOVE INITIAL FORM +0xF2D7 0xFE8C # ARABIC LETTER YEH WITH HAMZA ABOVE MEDIAL FORM +0xF2D8 0xFE8A # ARABIC LETTER YEH WITH HAMZA ABOVE FINAL FORM +0xF2D9 0x0626 # ARABIC LETTER YEH WITH HAMZA ABOVE +0xF2D9 0xFE89 # ARABIC LETTER YEH WITH HAMZA ABOVE ISOLATED FORM +0xF2DA 0x0624 # ARABIC LETTER WAW WITH HAMZA ABOVE +0xF2DA 0xFE85 # ARABIC LETTER WAW WITH HAMZA ABOVE ISOLATED FORM +0xF2DB 0xFE86 # ARABIC LETTER WAW WITH HAMZA ABOVE FINAL FORM +0xF2DC 0xFEFB # ARABIC LIGATURE LAM WITH ALEF ISOLATED FORM +0xF2DD 0xFEFC # ARABIC LIGATURE LAM WITH ALEF FINAL FORM +0xF2DE 0xFEF7 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE ISOLATED FORM +0xF2DF 0xFEF8 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE FINAL FORM +0xF2E0 0xFEF5 # ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE ISOLATED FORM +0xF2E1 0xFEF6 # ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE FINAL FORM +0xF2E2 0xFEF9 # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW ISOLATED FORM +0xF2E3 0xFEFA # ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW FINAL FORM +0xF2E4 0x064E # ARABIC FATHA +0xF2E5 0x064F # ARABIC DAMMA +0xF2E6 0x0652 # ARABIC SUKUN +0xF2E7 0x064B # ARABIC FATHATAN +0xF2E8 0x064C # ARABIC DAMMATAN +0xF2E9 0x0651 # ARABIC SHADDA +0xF2EA 0x0650 # ARABIC KASRA +0xF2EB 0x064D # ARABIC KASRATAN +0xF2EC 0xFC60 # ARABIC LIGATURE SHADDA WITH FATHA ISOLATED FORM +0xF2ED 0xFC61 # ARABIC LIGATURE SHADDA WITH DAMMA ISOLATED FORM +0xF2EF 0xFC5E # ARABIC LIGATURE SHADDA WITH DAMMATAN ISOLATED FORM +0xF2F0 0xFC62 # ARABIC LIGATURE SHADDA WITH KASRA ISOLATED FORM +0xF2F1 0xFEC4 # ARABIC LETTER TAH MEDIAL FORM diff --git a/gfx/harfbuzz/src/Makefile.am b/gfx/harfbuzz/src/Makefile.am new file mode 100644 index 0000000000..56dc32d9a7 --- /dev/null +++ b/gfx/harfbuzz/src/Makefile.am @@ -0,0 +1,594 @@ +# Process this file with automake to produce Makefile.in + +NULL = +SUBDIRS = +DIST_SUBDIRS = +BUILT_SOURCES = +EXTRA_DIST = +CLEANFILES = +DISTCLEANFILES = +MAINTAINERCLEANFILES = +DISTCHECK_CONFIGURE_FLAGS = --enable-introspection +TESTS = +check_PROGRAMS = + +EXTRA_DIST += harfbuzz.cc harfbuzz-subset.cc +EXTRA_DIST += meson.build +EXTRA_DIST += fix_get_types.py + +# Convenience targets: +lib: $(BUILT_SOURCES) libharfbuzz.la +libs: $(BUILT_SOURCES) $(lib_LTLIBRARIES) +tiny: + $(MAKE) $(AM_MAKEFLAGS) CPPFLAGS="-Os -DHB_TINY $(CPPFLAGS)" libs +tinyz: + $(MAKE) $(AM_MAKEFLAGS) CPPFLAGS="-Oz -DHB_TINY $(CPPFLAGS)" libs + +lib_LTLIBRARIES = libharfbuzz.la + +include Makefile.sources + +HBCFLAGS = +HBLIBS = +HBNONPCLIBS = +HBDEPS = +HBSOURCES = $(HB_BASE_sources) +HBSOURCES += $(HB_BASE_RAGEL_GENERATED_sources) +HBHEADERS = $(HB_BASE_headers) + +if HAVE_PTHREAD +HBCFLAGS += $(PTHREAD_CFLAGS) +HBNONPCLIBS += $(PTHREAD_LIBS) +endif + +if HAVE_GLIB +HBCFLAGS += $(GLIB_CFLAGS) +HBLIBS += $(GLIB_LIBS) +HBDEPS += $(GLIB_DEPS) +HBSOURCES += $(HB_GLIB_sources) +HBHEADERS += $(HB_GLIB_headers) +HB_HAS_GLIB_DEF = define HB_HAS_GLIB 1 +else +HB_HAS_GLIB_DEF = undef HB_HAS_GLIB +endif + +if HAVE_FREETYPE +HBCFLAGS += $(FREETYPE_CFLAGS) +HBLIBS += $(FREETYPE_LIBS) +HBDEPS += $(FREETYPE_DEPS) +HBSOURCES += $(HB_FT_sources) +HBHEADERS += $(HB_FT_headers) +HB_HAS_FREETYPE_DEF = define HB_HAS_FREETYPE 1 +else +HB_HAS_FREETYPE_DEF = undef HB_HAS_FREETYPE +endif + +if HAVE_GRAPHITE2 +HBCFLAGS += $(GRAPHITE2_CFLAGS) +HBLIBS += $(GRAPHITE2_LIBS) +HBDEPS += $(GRAPHITE2_DEPS) +HBSOURCES += $(HB_GRAPHITE2_sources) +HBHEADERS += $(HB_GRAPHITE2_headers) +HB_HAS_GRAPHITE_DEF = define HB_HAS_GRAPHITE 1 +else +HB_HAS_GRAPHITE_DEF = undef HB_HAS_GRAPHITE +endif + +if HAVE_UNISCRIBE +HBCFLAGS += $(UNISCRIBE_CFLAGS) +HBNONPCLIBS += $(UNISCRIBE_LIBS) +HBSOURCES += $(HB_UNISCRIBE_sources) +HBHEADERS += $(HB_UNISCRIBE_headers) +HB_HAS_UNISCRIBE_DEF = define HB_HAS_UNISCRIBE 1 +else +HB_HAS_UNISCRIBE_DEF = undef HB_HAS_UNISCRIBE +endif + +if HAVE_DIRECTWRITE +HBCFLAGS += $(DIRECTWRITE_CXXFLAGS) +HBNONPCLIBS += $(DIRECTWRITE_LIBS) +HBSOURCES += $(HB_DIRECTWRITE_sources) +HBHEADERS += $(HB_DIRECTWRITE_headers) +HB_HAS_DIRECTWRITE_DEF = define HB_HAS_DIRECTWRITE 1 +else +HB_HAS_DIRECTWRITE_DEF = undef HB_HAS_DIRECTWRITE +endif + +if HAVE_GDI +HBCFLAGS += $(GDI_CXXFLAGS) +HBNONPCLIBS += $(GDI_LIBS) +HBSOURCES += $(HB_GDI_sources) +HBHEADERS += $(HB_GDI_headers) +HB_HAS_GDI_DEF = define HB_HAS_GDI 1 +else +HB_HAS_GDI_DEF = undef HB_HAS_GDI +endif + +if HAVE_CORETEXT +HBCFLAGS += $(CORETEXT_CFLAGS) +HBNONPCLIBS += $(CORETEXT_LIBS) +HBSOURCES += $(HB_CORETEXT_sources) +HBHEADERS += $(HB_CORETEXT_headers) +HB_HAS_CORETEXT_DEF = define HB_HAS_CORETEXT 1 +else +HB_HAS_CORETEXT_DEF = undef HB_HAS_CORETEXT +endif + + +BUILT_SOURCES += \ + hb-version.h + +$(srcdir)/hb-version.h: hb-version.h.in $(top_srcdir)/configure.ac + $(AM_V_GEN) $(SED) \ + -e 's/[@]HB_VERSION_MAJOR@/$(HB_VERSION_MAJOR)/' \ + -e 's/[@]HB_VERSION_MINOR@/$(HB_VERSION_MINOR)/' \ + -e 's/[@]HB_VERSION_MICRO@/$(HB_VERSION_MICRO)/' \ + -e 's/[@]HB_VERSION@/$(HB_VERSION)/' \ + "$<" > "$@" || ($(RM) "$@"; false) + +# Put the library together + +HBLIBS += $(HBNONPCLIBS) + +if OS_WIN32 +export_symbols = -export-symbols harfbuzz.def +harfbuzz_def_dependency = harfbuzz.def +export_symbols_subset = -export-symbols harfbuzz-subset.def +harfbuzz_subset_def_dependency = harfbuzz-subset.def +export_symbols_cairo = -export-symbols harfbuzz-cairo.def +harfbuzz_cairo_def_dependency = harfbuzz-cairo.def +export_symbols_icu = -export-symbols harfbuzz-icu.def +harfbuzz_icu_def_dependency = harfbuzz-icu.def +export_symbols_gobject = -export-symbols harfbuzz-gobject.def +harfbuzz_gobject_def_dependency = harfbuzz-gobject.def +chosen_linker = $(CXXLINK) +else +if WITH_LIBSTDCXX +chosen_linker = $(CXXLINK) +else +if HAVE_GCC +# Use a C linker for GCC, not C++; Don't link to libstdc++ +chosen_linker = $(LINK) +else +chosen_linker = $(CXXLINK) +endif +endif +endif + +@CODE_COVERAGE_RULES@ + +base_link_flags = $(AM_LDFLAGS) -lm -version-info $(HB_LIBTOOL_VERSION_INFO) -no-undefined +libharfbuzz_la_LINK = $(chosen_linker) $(libharfbuzz_la_LDFLAGS) +libharfbuzz_la_SOURCES = $(HBSOURCES) $(HBHEADERS) +libharfbuzz_la_CPPFLAGS = $(HBCFLAGS) $(CODE_COVERAGE_CFLAGS) +libharfbuzz_la_LDFLAGS = $(base_link_flags) $(export_symbols) $(CODE_COVERAGE_LDFLAGS) +libharfbuzz_la_LIBADD = $(HBLIBS) +EXTRA_libharfbuzz_la_DEPENDENCIES = $(harfbuzz_def_dependency) +pkginclude_HEADERS = $(HBHEADERS) +nodist_pkginclude_HEADERS = +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = harfbuzz.pc +cmakedir = $(libdir)/cmake/harfbuzz +cmake_DATA = harfbuzz-config.cmake +EXTRA_DIST += hb-version.h.in hb-features.h.in harfbuzz.pc.in harfbuzz-config.cmake.in + +lib_LTLIBRARIES += libharfbuzz-subset.la +libharfbuzz_subset_la_LINK = $(chosen_linker) $(libharfbuzz_subset_la_LDFLAGS) +libharfbuzz_subset_la_SOURCES = $(HB_SUBSET_sources) +libharfbuzz_subset_la_CPPFLAGS = $(HBCFLAGS) $(CODE_COVERAGE_CFLAGS) +libharfbuzz_subset_la_LDFLAGS = $(base_link_flags) $(export_symbols_subset) $(CODE_COVERAGE_LDFLAGS) +libharfbuzz_subset_la_LIBADD = libharfbuzz.la +EXTRA_libharfbuzz_subset_la_DEPENDENCIES = $(harfbuzz_subset_def_dependency) +pkginclude_HEADERS += $(HB_SUBSET_headers) +pkgconfig_DATA += harfbuzz-subset.pc +EXTRA_DIST += harfbuzz-subset.pc.in + +harfbuzz-subset.cc: Makefile.sources + $(AM_V_GEN) \ + LANG=C; \ + for f in \ + $(HB_BASE_sources) \ + $(HB_SUBSET_sources) \ + ; do echo '#include "'$$f'"'; done | \ + sort -u | \ + grep '[.]cc"' > $(srcdir)/harfbuzz-subset.cc \ + || ($(RM) $(srcdir)/harfbuzz-subset.cc; false) +BUILT_SOURCES += harfbuzz-subset.cc + +lib_LTLIBRARIES += libharfbuzz-cairo.la +libharfbuzz_cairo_la_LINK = $(chosen_linker) $(libharfbuzz_cairo_la_LDFLAGS) +libharfbuzz_cairo_la_SOURCES = $(HB_CAIRO_sources) +libharfbuzz_cairo_la_CPPFLAGS = $(HBCFLAGS) $(CAIRO_CFLAGS) $(CODE_COVERAGE_CFLAGS) +libharfbuzz_cairo_la_LDFLAGS = $(base_link_flags) $(export_symbols_cairo) $(CODE_COVERAGE_LDFLAGS) +libharfbuzz_cairo_la_LIBADD = $(CAIRO_LIBS) libharfbuzz.la +EXTRA_libharfbuzz_cairo_la_DEPENDENCIES = $(harfbuzz_cairo_def_dependency) +pkginclude_HEADERS += $(HB_CAIRO_headers) +pkgconfig_DATA += harfbuzz-cairo.pc +EXTRA_DIST += harfbuzz-cairo.pc.in + +if HAVE_ICU +if HAVE_ICU_BUILTIN +HBCFLAGS += $(ICU_CFLAGS) +HBLIBS += $(ICU_LIBS) +HBSOURCES += $(HB_ICU_sources) +HBHEADERS += $(HB_ICU_headers) +HB_HAS_ICU_DEF = define HB_HAS_ICU 1 +else +lib_LTLIBRARIES += libharfbuzz-icu.la +libharfbuzz_icu_la_SOURCES = $(HB_ICU_sources) +libharfbuzz_icu_la_CPPFLAGS = $(HBCFLAGS) $(ICU_CFLAGS) $(CODE_COVERAGE_CFLAGS) +libharfbuzz_icu_la_LDFLAGS = $(base_link_flags) $(export_symbols_icu) $(CODE_COVERAGE_LDFLAGS) +libharfbuzz_icu_la_LIBADD = $(ICU_LIBS) libharfbuzz.la +EXTRA_libharfbuzz_icu_la_DEPENDENCIES = $(harfbuzz_icu_def_dependency) +pkginclude_HEADERS += $(HB_ICU_headers) +pkgconfig_DATA += harfbuzz-icu.pc +HB_HAS_ICU_DEF = undef HB_HAS_ICU +endif +endif +EXTRA_DIST += harfbuzz-icu.pc.in + +if HAVE_GOBJECT +lib_LTLIBRARIES += libharfbuzz-gobject.la +libharfbuzz_gobject_la_LINK = $(chosen_linker) $(libharfbuzz_gobject_la_LDFLAGS) +libharfbuzz_gobject_la_SOURCES = $(HB_GOBJECT_DIST_sources) +nodist_libharfbuzz_gobject_la_SOURCES = $(HB_GOBJECT_NODIST_sources) +libharfbuzz_gobject_la_CPPFLAGS = $(HBCFLAGS) $(GOBJECT_CFLAGS) $(CODE_COVERAGE_CFLAGS) +libharfbuzz_gobject_la_LDFLAGS = $(base_link_flags) $(CODE_COVERAGE_LDFLAGS) +libharfbuzz_gobject_la_LIBADD = $(GOBJECT_LIBS) libharfbuzz.la +EXTRA_libharfbuzz_gobject_la_DEPENDENCIES = $(harfbuzz_gobject_def_dependency) +pkginclude_HEADERS += $(HB_GOBJECT_DIST_headers) +nodist_pkginclude_HEADERS += $(HB_GOBJECT_NODIST_headers) +pkgconfig_DATA += harfbuzz-gobject.pc + +BUILT_SOURCES += \ + $(HB_GOBJECT_ENUM_sources) \ + $(HB_GOBJECT_ENUM_headers) \ + $(NULL) +DISTCLEANFILES += \ + $(HB_GOBJECT_ENUM_sources) \ + $(HB_GOBJECT_ENUM_headers) \ + $(NULL) +hb-gobject-enums.%: hb-gobject-enums.%.tmpl $(HBHEADERS) + $(AM_V_GEN) PYTHONIOENCODING=UTF-8 $(GLIB_MKENUMS) \ + --identifier-prefix hb_ --symbol-prefix hb_gobject \ + --template $^ | \ + sed 's/_t_get_type/_get_type/g; s/_T (/ (/g' > "$@" \ + || ($(RM) "$@"; false) +HB_HAS_GOBJECT_DEF = define HB_HAS_GOBJECT 1 +else +HB_HAS_GOBJECT_DEF = undef HB_HAS_GOBJECT +endif +EXTRA_DIST += \ + harfbuzz-gobject.pc.in \ + hb-gobject-enums.cc.tmpl \ + hb-gobject-enums.h.tmpl \ + $(NULL) + + +BUILT_SOURCES += \ + hb-features.h +DISTCLEANFILES += \ + hb-features.h + +hb-features.h: hb-features.h.in $(top_builddir)/config.status + $(AM_V_GEN) $(SED) \ + -e 's/mesondefine HB_HAS_CAIRO/$(HB_HAS_CAIRO_DEF)/' \ + -e 's/mesondefine HB_HAS_FREETYPE/$(HB_HAS_FREETYPE_DEF)/' \ + -e 's/mesondefine HB_HAS_GDI/$(HB_HAS_GDI_DEF)/' \ + -e 's/mesondefine HB_HAS_GDI/$(HB_HAS_GDI_DEF)/' \ + -e 's/mesondefine HB_HAS_GRAPHITE/$(HB_HAS_GRAPHITE_DEF)/' \ + -e 's/mesondefine HB_HAS_GLIB/$(HB_HAS_GLIB_DEF)/' \ + -e 's/mesondefine HB_HAS_GOBJECT/$(HB_HAS_GOBJECT_DEF)/' \ + -e 's/mesondefine HB_HAS_UNISCRIBE/$(HB_HAS_UNISCRIBE_DEF)/' \ + -e 's/mesondefine HB_HAS_DIRECTWRITE/$(HB_HAS_DIRECTWRITE_DEF)/' \ + -e 's/mesondefine HB_HAS_CORETEXT/$(HB_HAS_CORETEXT_DEF)/' \ + -e 's/mesondefine HB_HAS_ICU/$(HB_HAS_ICU_DEF)/' \ + "$<" > "$@" || ($(RM) "$@"; false) + + +%.pc: %.pc.in $(top_builddir)/config.status + $(AM_V_GEN) \ + $(SED) -e 's@%prefix%@$(prefix)@g' \ + -e 's@%exec_prefix%@$(exec_prefix)@g' \ + -e 's@%libdir%@$(libdir)@g' \ + -e 's@%includedir%@$(includedir)@g' \ + -e 's@%libs_private%@$(HBNONPCLIBS)@g' \ + -e 's@%requires_private%@$(HBDEPS)@g' \ + -e 's@%VERSION%@$(VERSION)@g' \ + "$<" > "$@" \ + || ($(RM) "$@"; false) + +CLEANFILES += $(pkgconfig_DATA) + + +DEF_FILES = harfbuzz.def harfbuzz-subset.def harfbuzz-icu.def harfbuzz-deprecated-symbols.txt +if HAVE_GOBJECT +DEF_FILES += harfbuzz-gobject.def +endif +check: $(DEF_FILES) # For check-symbols.sh +CLEANFILES += $(DEF_FILES) +harfbuzz.def: $(top_builddir)/config.status +harfbuzz.def: $(HBHEADERS) + $(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^ +harfbuzz-subset.def: $(HB_SUBSET_headers) + $(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^ +harfbuzz-cairo.def: $(HB_CAIRO_headers) + $(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^ +harfbuzz-icu.def: $(HB_ICU_headers) + $(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^ +harfbuzz-gobject.def: $(HB_GOBJECT_headers) + $(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^ +harfbuzz-deprecated-symbols.txt: $(srcdir)/hb-deprecated.h + $(AM_V_GEN) PLAIN_LIST=1 $(srcdir)/gen-def.py "$@" $^ + + +GENERATORS = \ + gen-arabic-joining-list.py \ + gen-arabic-table.py \ + gen-def.py \ + gen-emoji-table.py \ + gen-harfbuzzcc.py \ + gen-hb-version.py \ + gen-indic-table.py \ + gen-os2-unicode-ranges.py \ + gen-ragel-artifacts.py \ + gen-tag-table.py \ + gen-ucd-table.py \ + gen-use-table.py \ + gen-vowel-constraints.py \ + $(NULL) +EXTRA_DIST += $(GENERATORS) + +built-sources: $(BUILT_SOURCES) + +.PHONY: built-sources + +RAGEL_GENERATED = \ + $(patsubst %,$(srcdir)/%,$(HB_BASE_RAGEL_GENERATED_sources)) \ + $(NULL) +BUILT_SOURCES += $(RAGEL_GENERATED) +EXTRA_DIST += \ + $(HB_BASE_RAGEL_sources) \ + $(NULL) +# We decided to add ragel-generated files to git... +#MAINTAINERCLEANFILES += $(RAGEL_GENERATED) +$(srcdir)/%.hh: $(srcdir)/%.rl + $(AM_V_GEN)(cd $(srcdir) && $(RAGEL) -e -F1 -o "$*.hh" "$*.rl") \ + || ($(RM) "$@"; false) + +harfbuzz.cc: Makefile.sources + $(AM_V_GEN) \ + LANG=C; \ + for f in \ + $(HB_BASE_sources) \ + $(HB_GLIB_sources) \ + $(HB_FT_sources) \ + $(HB_GRAPHITE2_sources) \ + $(HB_UNISCRIBE_sources) \ + $(HB_GDI_sources) \ + $(HB_DIRECTWRITE_sources) \ + $(HB_CORETEXT_sources) \ + ; do echo '#include "'$$f'"'; done | \ + sort -u | \ + grep '[.]cc"' > $(srcdir)/harfbuzz.cc \ + || ($(RM) $(srcdir)/harfbuzz.cc; false) +BUILT_SOURCES += harfbuzz.cc + +noinst_PROGRAMS = \ + main \ + test \ + test-buffer-serialize \ + test-ot-meta \ + test-ot-name \ + test-ot-glyphname \ + test-gpos-size-params \ + test-gsub-get-alternates \ + test-gsub-would-substitute \ + test-use-table \ + $(NULL) +bin_PROGRAMS = + +main_SOURCES = main.cc +main_CPPFLAGS = $(HBCFLAGS) +main_LDADD = libharfbuzz.la $(HBLIBS) + +test_SOURCES = test.cc +test_CPPFLAGS = $(HBCFLAGS) $(FREETYPE_CFLAGS) +test_LDADD = libharfbuzz.la $(HBLIBS) $(FREETYPE_LIBS) + +test_buffer_serialize_SOURCES = test-buffer-serialize.cc +test_buffer_serialize_CPPFLAGS = $(HBCFLAGS) +test_buffer_serialize_LDADD = libharfbuzz.la $(HBLIBS) + +test_ot_meta_SOURCES = test-ot-meta.cc +test_ot_meta_CPPFLAGS = $(HBCFLAGS) +test_ot_meta_LDADD = libharfbuzz.la $(HBLIBS) + +test_ot_name_SOURCES = test-ot-name.cc +test_ot_name_CPPFLAGS = $(HBCFLAGS) +test_ot_name_LDADD = libharfbuzz.la $(HBLIBS) + +test_ot_glyphname_SOURCES = test-ot-glyphname.cc +test_ot_glyphname_CPPFLAGS = $(HBCFLAGS) +test_ot_glyphname_LDADD = libharfbuzz.la $(HBLIBS) + +test_use_table_SOURCES = test-use-table.cc +test_use_table_CPPFLAGS = $(HBCFLAGS) +test_use_table_LDADD = libharfbuzz.la $(HBLIBS) + +test_gpos_size_params_SOURCES = test-gpos-size-params.cc +test_gpos_size_params_CPPFLAGS = $(HBCFLAGS) +test_gpos_size_params_LDADD = libharfbuzz.la $(HBLIBS) + +test_gsub_get_alternates_SOURCES = test-gsub-get-alternates.cc +test_gsub_get_alternates_CPPFLAGS = $(HBCFLAGS) +test_gsub_get_alternates_LDADD = libharfbuzz.la $(HBLIBS) + +test_gsub_would_substitute_SOURCES = test-gsub-would-substitute.cc +test_gsub_would_substitute_CPPFLAGS = $(HBCFLAGS) $(FREETYPE_CFLAGS) +test_gsub_would_substitute_LDADD = libharfbuzz.la $(HBLIBS) $(FREETYPE_LIBS) + +COMPILED_TESTS = \ + test-algs \ + test-array \ + test-bimap \ + test-iter \ + test-machinery \ + test-map \ + test-multimap \ + test-number \ + test-ot-tag \ + test-priority-queue \ + test-set \ + test-serialize \ + test-unicode-ranges \ + test-vector \ + test-repacker \ + test-classdef-graph \ + $(NULL) +COMPILED_TESTS_CPPFLAGS = $(HBCFLAGS) -DMAIN -UNDEBUG +COMPILED_TESTS_LDADD = libharfbuzz.la $(HBLIBS) +check_PROGRAMS += $(COMPILED_TESTS) +TESTS += $(COMPILED_TESTS) + +test_algs_SOURCES = test-algs.cc hb-static.cc +test_algs_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_algs_LDADD = $(COMPILED_TESTS_LDADD) + +test_array_SOURCES = test-array.cc +test_array_CPPFLAGS = $(HBCFLAGS) +test_array_LDADD = libharfbuzz.la $(HBLIBS) + +test_bimap_SOURCES = test-bimap.cc hb-static.cc +test_bimap_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_bimap_LDADD = $(COMPILED_TESTS_LDADD) + +test_iter_SOURCES = test-iter.cc hb-static.cc +test_iter_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_iter_LDADD = $(COMPILED_TESTS_LDADD) + +test_machinery_SOURCES = test-machinery.cc hb-static.cc +test_machinery_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_machinery_LDADD = $(COMPILED_TESTS_LDADD) + +test_map_SOURCES = test-map.cc hb-static.cc +test_map_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_map_LDADD = $(COMPILED_TESTS_LDADD) + +test_multimap_SOURCES = test-multimap.cc hb-static.cc +test_multimap_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_multimap_LDADD = $(COMPILED_TESTS_LDADD) + +test_number_SOURCES = test-number.cc hb-number.cc +test_number_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_number_LDADD = $(COMPILED_TESTS_LDADD) + +test_ot_tag_SOURCES = hb-ot-tag.cc +test_ot_tag_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_ot_tag_LDADD = $(COMPILED_TESTS_LDADD) + +test_priority_queue_SOURCES = test-priority-queue.cc hb-static.cc +test_priority_queue_CPPFLAGS = $(HBCFLAGS) +test_priority_queue_LDADD = libharfbuzz.la $(HBLIBS) + +test_repacker_SOURCES = test-repacker.cc hb-static.cc graph/gsubgpos-context.cc +test_repacker_CPPFLAGS = $(HBCFLAGS) +test_repacker_LDADD = libharfbuzz.la libharfbuzz-subset.la $(HBLIBS) + +test_classdef_graph_SOURCES = graph/test-classdef-graph.cc hb-static.cc graph/gsubgpos-context.cc +test_classdef_graph_CPPFLAGS = $(HBCFLAGS) +test_classdef_graph_LDADD = libharfbuzz.la libharfbuzz-subset.la $(HBLIBS) + +test_set_SOURCES = test-set.cc hb-static.cc +test_set_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_set_LDADD = $(COMPILED_TESTS_LDADD) + +test_serialize_SOURCES = test-serialize.cc hb-static.cc +test_serialize_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_serialize_LDADD = $(COMPILED_TESTS_LDADD) + +test_unicode_ranges_SOURCES = test-unicode-ranges.cc +test_unicode_ranges_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_unicode_ranges_LDADD = $(COMPILED_TESTS_LDADD) + +test_vector_SOURCES = test-vector.cc hb-static.cc +test_vector_CPPFLAGS = $(COMPILED_TESTS_CPPFLAGS) +test_vector_LDADD = $(COMPILED_TESTS_LDADD) + +dist_check_SCRIPTS = \ + check-c-linkage-decls.py \ + check-externs.py \ + check-header-guards.py \ + check-includes.py \ + check-static-inits.py \ + check-symbols.py \ + $(NULL) +TESTS += $(dist_check_SCRIPTS) + +if !WITH_LIBSTDCXX +dist_check_SCRIPTS += \ + check-libstdc++.py \ + $(NULL) +endif + +TESTS_ENVIRONMENT = \ + srcdir="$(srcdir)" \ + base_srcdir="$(srcdir)" \ + builddir="$(builddir)" \ + MAKE="$(MAKE) $(AM_MAKEFLAGS)" \ + HBSOURCES="$(HBSOURCES)" \ + HBHEADERS="$(HBHEADERS)" \ + LDD="$(LDD)" \ + NM="$(NM)" \ + OBJDUMP="$(OBJDUMP)" \ + OTOOL="$(OTOOL)" \ + $(NULL) + +if HAVE_INTROSPECTION + +-include $(INTROSPECTION_MAKEFILE) +INTROSPECTION_GIRS = HarfBuzz-0.0.gir # What does the 0 mean anyway?! +INTROSPECTION_SCANNER_ARGS = \ + -I$(srcdir) \ + --warn-all --verbose \ + --namespace=HarfBuzz \ + --nsversion=0.0 \ + --symbol-prefix=hb \ + --symbol-prefix=hb_gobject \ + --identifier-prefix=hb_ \ + --pkg-export=harfbuzz-gobject \ + --c-include=hb-gobject.h +INTROSPECTION_COMPILER_ARGS = --includedir=$(srcdir) +INTROSPECTION_SCANNER_ENV = CC="$(CC)" + +HarfBuzz-0.0.gir: libharfbuzz.la libharfbuzz-gobject.la +HarfBuzz_0_0_gir_INCLUDES = GObject-2.0 freetype2-2.0 +HarfBuzz_0_0_gir_CFLAGS = \ + $(INCLUDES) \ + $(HBCFLAGS) \ + -DHB_NO_SINGLE_HEADER_ERROR \ + -DHAVE_GOBJECT \ + -DHB_EXTERN= \ + $(NULL) +HarfBuzz_0_0_gir_LIBS = \ + libharfbuzz.la \ + libharfbuzz-gobject.la \ + $(NULL) +HarfBuzz_0_0_gir_FILES = \ + $(HBHEADERS) \ + $(HBSOURCES) \ + $(HB_GOBJECT_sources) \ + $(HB_GOBJECT_headers) \ + $(NULL) + +girdir = $(datadir)/gir-1.0 +gir_DATA = $(INTROSPECTION_GIRS) + +typelibdir = $(libdir)/girepository-1.0 +typelib_DATA = $(INTROSPECTION_GIRS:.gir=.typelib) + +CLEANFILES += $(gir_DATA) $(typelib_DATA) + +endif + +-include $(top_srcdir)/git.mk diff --git a/gfx/harfbuzz/src/Makefile.sources b/gfx/harfbuzz/src/Makefile.sources new file mode 100644 index 0000000000..85537a58a4 --- /dev/null +++ b/gfx/harfbuzz/src/Makefile.sources @@ -0,0 +1,405 @@ +# Base and default-included sources and headers + +HB_BASE_sources = \ + hb-aat-layout-ankr-table.hh \ + hb-aat-layout-bsln-table.hh \ + hb-aat-layout-common.hh \ + hb-aat-layout-feat-table.hh \ + hb-aat-layout-just-table.hh \ + hb-aat-layout-kerx-table.hh \ + hb-aat-layout-morx-table.hh \ + hb-aat-layout-opbd-table.hh \ + hb-aat-layout-trak-table.hh \ + hb-aat-layout.cc \ + hb-aat-layout.hh \ + hb-aat-ltag-table.hh \ + hb-aat-map.cc \ + hb-aat-map.hh \ + hb-algs.hh \ + hb-array.hh \ + hb-atomic.hh \ + hb-bimap.hh \ + hb-bit-page.hh \ + hb-bit-set.hh \ + hb-bit-set-invertible.hh \ + hb-blob.cc \ + hb-blob.hh \ + hb-buffer-serialize.cc \ + hb-buffer-verify.cc \ + hb-buffer.cc \ + hb-buffer.hh \ + hb-cache.hh \ + hb-cff-interp-common.hh \ + hb-cff-interp-cs-common.hh \ + hb-cff-interp-dict-common.hh \ + hb-cff1-interp-cs.hh \ + hb-cff2-interp-cs.hh \ + hb-common.cc \ + hb-config.hh \ + hb-debug.hh \ + hb-dispatch.hh \ + hb-draw.cc \ + hb-draw.hh \ + hb-face.cc \ + hb-face.hh \ + hb-face-builder.cc \ + hb-fallback-shape.cc \ + hb-font.cc \ + hb-font.hh \ + hb-iter.hh \ + hb-kern.hh \ + hb-limits.hh \ + hb-machinery.hh \ + hb-map.cc \ + hb-map.hh \ + hb-meta.hh \ + hb-ms-feature-ranges.hh \ + hb-multimap.hh \ + hb-mutex.hh \ + hb-null.hh \ + hb-number.cc \ + hb-number.hh \ + hb-object.hh \ + hb-open-file.hh \ + hb-open-type.hh \ + hb-ot-cff-common.hh \ + hb-ot-cff1-std-str.hh \ + hb-ot-cff1-table.cc \ + hb-ot-cff1-table.hh \ + hb-ot-cff2-table.cc \ + hb-ot-cff2-table.hh \ + hb-ot-cmap-table.hh \ + hb-ot-color.cc \ + hb-ot-face-table-list.hh \ + hb-ot-face.cc \ + hb-ot-face.hh \ + hb-ot-font.cc \ + hb-ot-gasp-table.hh \ + hb-ot-glyf-table.hh \ + hb-ot-hdmx-table.hh \ + hb-ot-head-table.hh \ + hb-ot-hhea-table.hh \ + hb-ot-hmtx-table.hh \ + hb-ot-kern-table.hh \ + hb-ot-layout-base-table.hh \ + hb-ot-layout-common.hh \ + hb-ot-layout-gdef-table.hh \ + hb-ot-layout-gpos-table.hh \ + hb-outline.hh \ + hb-outline.cc \ + hb-paint.cc \ + hb-paint.hh \ + hb-paint-extents.cc \ + hb-paint-extents.hh \ + hb-ot-layout-gsub-table.hh \ + OT/Color/CBDT/CBDT.hh \ + OT/Color/COLR/COLR.hh \ + OT/Color/CPAL/CPAL.hh \ + OT/Color/sbix/sbix.hh \ + OT/Color/svg/svg.hh \ + OT/glyf/glyf.hh \ + OT/glyf/glyf-helpers.hh \ + OT/glyf/loca.hh \ + OT/glyf/path-builder.hh \ + OT/glyf/Glyph.hh \ + OT/glyf/GlyphHeader.hh \ + OT/glyf/SimpleGlyph.hh \ + OT/glyf/coord-setter.hh \ + OT/glyf/composite-iter.hh \ + OT/glyf/CompositeGlyph.hh \ + OT/glyf/VarCompositeGlyph.hh \ + OT/glyf/SubsetGlyph.hh \ + OT/Layout/types.hh \ + OT/Layout/Common/Coverage.hh \ + OT/Layout/Common/CoverageFormat1.hh \ + OT/Layout/Common/CoverageFormat2.hh \ + OT/Layout/Common/RangeRecord.hh \ + OT/Layout/GDEF/GDEF.hh \ + OT/Layout/GPOS/AnchorFormat1.hh \ + OT/Layout/GPOS/AnchorFormat2.hh \ + OT/Layout/GPOS/AnchorFormat3.hh \ + OT/Layout/GPOS/Anchor.hh \ + OT/Layout/GPOS/AnchorMatrix.hh \ + OT/Layout/GPOS/ChainContextPos.hh \ + OT/Layout/GPOS/Common.hh \ + OT/Layout/GPOS/ContextPos.hh \ + OT/Layout/GPOS/CursivePosFormat1.hh \ + OT/Layout/GPOS/CursivePos.hh \ + OT/Layout/GPOS/ExtensionPos.hh \ + OT/Layout/GPOS/GPOS.hh \ + OT/Layout/GPOS/LigatureArray.hh \ + OT/Layout/GPOS/MarkArray.hh \ + OT/Layout/GPOS/MarkBasePosFormat1.hh \ + OT/Layout/GPOS/MarkBasePos.hh \ + OT/Layout/GPOS/MarkLigPosFormat1.hh \ + OT/Layout/GPOS/MarkLigPos.hh \ + OT/Layout/GPOS/MarkMarkPosFormat1.hh \ + OT/Layout/GPOS/MarkMarkPos.hh \ + OT/Layout/GPOS/MarkRecord.hh \ + OT/Layout/GPOS/PairPosFormat1.hh \ + OT/Layout/GPOS/PairPosFormat2.hh \ + OT/Layout/GPOS/PairPos.hh \ + OT/Layout/GPOS/PairSet.hh \ + OT/Layout/GPOS/PairValueRecord.hh \ + OT/Layout/GPOS/PosLookup.hh \ + OT/Layout/GPOS/PosLookupSubTable.hh \ + OT/Layout/GPOS/SinglePosFormat1.hh \ + OT/Layout/GPOS/SinglePosFormat2.hh \ + OT/Layout/GPOS/SinglePos.hh \ + OT/Layout/GPOS/ValueFormat.hh \ + OT/Layout/GSUB/AlternateSet.hh \ + OT/Layout/GSUB/AlternateSubstFormat1.hh \ + OT/Layout/GSUB/AlternateSubst.hh \ + OT/Layout/GSUB/ChainContextSubst.hh \ + OT/Layout/GSUB/Common.hh \ + OT/Layout/GSUB/ContextSubst.hh \ + OT/Layout/GSUB/ExtensionSubst.hh \ + OT/Layout/GSUB/GSUB.hh \ + OT/Layout/GSUB/Ligature.hh \ + OT/Layout/GSUB/LigatureSet.hh \ + OT/Layout/GSUB/LigatureSubstFormat1.hh \ + OT/Layout/GSUB/LigatureSubst.hh \ + OT/Layout/GSUB/MultipleSubstFormat1.hh \ + OT/Layout/GSUB/MultipleSubst.hh \ + OT/Layout/GSUB/ReverseChainSingleSubstFormat1.hh \ + OT/Layout/GSUB/ReverseChainSingleSubst.hh \ + OT/Layout/GSUB/Sequence.hh \ + OT/Layout/GSUB/SingleSubstFormat1.hh \ + OT/Layout/GSUB/SingleSubstFormat2.hh \ + OT/Layout/GSUB/SingleSubst.hh \ + OT/Layout/GSUB/SubstLookup.hh \ + OT/Layout/GSUB/SubstLookupSubTable.hh \ + OT/name/name.hh \ + hb-ot-layout-gsubgpos.hh \ + hb-ot-layout-jstf-table.hh \ + hb-ot-layout.cc \ + hb-ot-layout.hh \ + hb-ot-map.cc \ + hb-ot-map.hh \ + hb-ot-math-table.hh \ + hb-ot-math.cc \ + hb-ot-maxp-table.hh \ + hb-ot-meta-table.hh \ + hb-ot-meta.cc \ + hb-ot-metrics.cc \ + hb-ot-metrics.hh \ + hb-ot-name-language-static.hh \ + hb-ot-name-language.hh \ + hb-ot-name-table.hh \ + hb-ot-name.cc \ + hb-ot-os2-table.hh \ + hb-ot-os2-unicode-ranges.hh \ + hb-ot-post-macroman.hh \ + hb-ot-post-table.hh \ + hb-ot-shaper-arabic-fallback.hh \ + hb-ot-shaper-arabic-joining-list.hh \ + hb-ot-shaper-arabic-pua.hh \ + hb-ot-shaper-arabic-table.hh \ + hb-ot-shaper-arabic-win1256.hh \ + hb-ot-shaper-arabic.cc \ + hb-ot-shaper-arabic.hh \ + hb-ot-shaper-default.cc \ + hb-ot-shaper-hangul.cc \ + hb-ot-shaper-hebrew.cc \ + hb-ot-shaper-indic-table.cc \ + hb-ot-shaper-indic.cc \ + hb-ot-shaper-indic.hh \ + hb-ot-shaper-khmer.cc \ + hb-ot-shaper-myanmar.cc \ + hb-ot-shaper-syllabic.cc \ + hb-ot-shaper-syllabic.hh \ + hb-ot-shaper-thai.cc \ + hb-ot-shaper-use-table.hh \ + hb-ot-shaper-use.cc \ + hb-ot-shaper-vowel-constraints.cc \ + hb-ot-shaper-vowel-constraints.hh \ + hb-ot-shaper.hh \ + hb-ot-shape-fallback.cc \ + hb-ot-shape-fallback.hh \ + hb-ot-shape-normalize.cc \ + hb-ot-shape-normalize.hh \ + hb-ot-shape.cc \ + hb-ot-shape.hh \ + hb-ot-stat-table.hh \ + hb-ot-tag-table.hh \ + hb-ot-tag.cc \ + hb-ot-var-avar-table.hh \ + hb-ot-var-common.hh \ + hb-ot-var-cvar-table.hh \ + hb-ot-var-fvar-table.hh \ + hb-ot-var-gvar-table.hh \ + hb-ot-var-hvar-table.hh \ + hb-ot-var-mvar-table.hh \ + hb-ot-var.cc \ + hb-ot-vorg-table.hh \ + hb-pool.hh \ + hb-sanitize.hh \ + hb-serialize.hh \ + hb-set-digest.hh \ + hb-set.cc \ + hb-set.hh \ + hb-shape-plan.cc \ + hb-shape-plan.hh \ + hb-shape.cc \ + hb-shaper-impl.hh \ + hb-shaper-list.hh \ + hb-shaper.cc \ + hb-shaper.hh \ + hb-static.cc \ + hb-string-array.hh \ + hb-style.cc \ + hb-ucd-table.hh \ + hb-ucd.cc \ + hb-unicode-emoji-table.hh \ + hb-unicode.cc \ + hb-unicode.hh \ + hb-utf.hh \ + hb-vector.hh \ + hb-priority-queue.hh \ + hb.hh \ + $(NULL) + +HB_BASE_RAGEL_GENERATED_sources = \ + hb-buffer-deserialize-json.hh \ + hb-buffer-deserialize-text-glyphs.hh \ + hb-buffer-deserialize-text-unicode.hh \ + hb-number-parser.hh \ + hb-ot-shaper-indic-machine.hh \ + hb-ot-shaper-khmer-machine.hh \ + hb-ot-shaper-myanmar-machine.hh \ + hb-ot-shaper-use-machine.hh \ + $(NULL) +HB_BASE_RAGEL_sources = \ + hb-buffer-deserialize-json.rl \ + hb-buffer-deserialize-text-glyphs.rl \ + hb-buffer-deserialize-text-unicode.rl \ + hb-number-parser.rl \ + hb-ot-shaper-indic-machine.rl \ + hb-ot-shaper-khmer-machine.rl \ + hb-ot-shaper-myanmar-machine.rl \ + hb-ot-shaper-use-machine.rl \ + $(NULL) + +HB_BASE_headers = \ + hb-aat-layout.h \ + hb-aat.h \ + hb-blob.h \ + hb-buffer.h \ + hb-common.h \ + hb-cplusplus.hh \ + hb-deprecated.h \ + hb-draw.h \ + hb-face.h \ + hb-font.h \ + hb-map.h \ + hb-ot-color.h \ + hb-ot-deprecated.h \ + hb-ot-font.h \ + hb-ot-layout.h \ + hb-ot-math.h \ + hb-ot-meta.h \ + hb-ot-metrics.h \ + hb-ot-name.h \ + hb-ot-shape.h \ + hb-ot-var.h \ + hb-ot.h \ + hb-paint.h \ + hb-set.h \ + hb-shape-plan.h \ + hb-shape.h \ + hb-style.h \ + hb-unicode.h \ + hb-version.h \ + hb.h \ + $(NULL) + +# Optional Sources and Headers with external deps + +HB_FT_sources = hb-ft.cc hb-ft-colr.hh +HB_FT_headers = hb-ft.h + +HB_GLIB_sources = hb-glib.cc +HB_GLIB_headers = hb-glib.h + +HB_GRAPHITE2_sources = hb-graphite2.cc +HB_GRAPHITE2_headers = hb-graphite2.h + +# System-dependent sources and headers + +HB_CORETEXT_sources = hb-coretext.cc +HB_CORETEXT_headers = hb-coretext.h + +HB_DIRECTWRITE_sources = hb-directwrite.cc +HB_DIRECTWRITE_headers = hb-directwrite.h + +HB_GDI_sources = hb-gdi.cc +HB_GDI_headers = hb-gdi.h + +HB_UNISCRIBE_sources = hb-uniscribe.cc +HB_UNISCRIBE_headers = hb-uniscribe.h + +# Sources for libharfbuzz-gobject and libharfbuzz-icu +HB_ICU_sources = hb-icu.cc +HB_ICU_headers = hb-icu.h + +# Sources for libharfbuzz-subset +HB_SUBSET_sources = \ + hb-number.cc \ + hb-number.hh \ + hb-ot-cff1-table.cc \ + hb-ot-cff2-table.cc \ + hb-ot-post-table-v2subset.hh \ + hb-static.cc \ + hb-subset-cff-common.cc \ + hb-subset-cff-common.hh \ + hb-subset-cff1.cc \ + hb-subset-cff1.hh \ + hb-subset-cff2.cc \ + hb-subset-cff2.hh \ + hb-subset-input.cc \ + hb-subset-input.hh \ + hb-subset-instancer-solver.cc \ + hb-subset-accelerator.hh \ + hb-subset-plan.cc \ + hb-subset-plan.hh \ + hb-subset-plan-member-list.hh \ + hb-subset-repacker.cc \ + hb-subset.cc \ + hb-subset.hh \ + hb-repacker.hh \ + graph/graph.hh \ + graph/gsubgpos-graph.hh \ + graph/gsubgpos-context.hh \ + graph/gsubgpos-context.cc \ + graph/coverage-graph.hh \ + graph/classdef-graph.hh \ + graph/pairpos-graph.hh \ + graph/markbasepos-graph.hh \ + graph/split-helpers.hh \ + graph/serialize.hh \ + OT/Color/COLR/colrv1-closure.hh \ + $(NULL) + +HB_SUBSET_headers = \ + hb-subset.h \ + hb-subset-repacker.h \ + $(NULL) + +HB_CAIRO_sources = \ + hb-cairo.cc \ + hb-cairo-utils.cc \ + hb-cairo-utils.hh \ + hb-static.cc \ + $(NULL) +HB_CAIRO_headers = \ + hb-cairo.h \ + $(NULL) + +HB_GOBJECT_DIST_sources = hb-gobject-structs.cc +HB_GOBJECT_DIST_headers = hb-gobject.h hb-gobject-structs.h +HB_GOBJECT_ENUM_sources = hb-gobject-enums.cc +HB_GOBJECT_ENUM_headers = hb-gobject-enums.h +HB_GOBJECT_NODIST_sources = $(HB_GOBJECT_ENUM_sources) +HB_GOBJECT_NODIST_headers = $(HB_GOBJECT_ENUM_headers) +HB_GOBJECT_sources = $(HB_GOBJECT_DIST_sources) $(HB_GOBJECT_NODIST_sources) +HB_GOBJECT_headers = $(HB_GOBJECT_DIST_headers) $(HB_GOBJECT_NODIST_headers) diff --git a/gfx/harfbuzz/src/OT/Color/CBDT/CBDT.hh b/gfx/harfbuzz/src/OT/Color/CBDT/CBDT.hh new file mode 100644 index 0000000000..b125052344 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/CBDT/CBDT.hh @@ -0,0 +1,1030 @@ +/* + * Copyright © 2016 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Seigo Nonaka, Calder Kitagawa + */ + +#ifndef OT_COLOR_CBDT_CBDT_HH +#define OT_COLOR_CBDT_CBDT_HH + +#include "../../../hb-open-type.hh" +#include "../../../hb-paint.hh" + +/* + * CBLC -- Color Bitmap Location + * https://docs.microsoft.com/en-us/typography/opentype/spec/cblc + * https://docs.microsoft.com/en-us/typography/opentype/spec/eblc + * CBDT -- Color Bitmap Data + * https://docs.microsoft.com/en-us/typography/opentype/spec/cbdt + * https://docs.microsoft.com/en-us/typography/opentype/spec/ebdt + */ +#define HB_OT_TAG_CBLC HB_TAG('C','B','L','C') +#define HB_OT_TAG_CBDT HB_TAG('C','B','D','T') + + +namespace OT { + +struct cblc_bitmap_size_subset_context_t +{ + const char *cbdt; + unsigned int cbdt_length; + hb_vector_t *cbdt_prime; + unsigned int size; /* INOUT + * Input: old size of IndexSubtable + * Output: new size of IndexSubtable + */ + unsigned int num_tables; /* INOUT + * Input: old number of subtables. + * Output: new number of subtables. + */ + hb_codepoint_t start_glyph; /* OUT */ + hb_codepoint_t end_glyph; /* OUT */ +}; + +static inline bool +_copy_data_to_cbdt (hb_vector_t *cbdt_prime, + const void *data, + unsigned length) +{ + unsigned int new_len = cbdt_prime->length + length; + if (unlikely (!cbdt_prime->alloc (new_len))) return false; + hb_memcpy (cbdt_prime->arrayZ + cbdt_prime->length, data, length); + cbdt_prime->length = new_len; + return true; +} + +struct SmallGlyphMetrics +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_extents (hb_font_t *font, hb_glyph_extents_t *extents, bool scale) const + { + extents->x_bearing = bearingX; + extents->y_bearing = bearingY; + extents->width = width; + extents->height = -static_cast (height); + + if (scale) + font->scale_glyph_extents (extents); + } + + HBUINT8 height; + HBUINT8 width; + HBINT8 bearingX; + HBINT8 bearingY; + HBUINT8 advance; + public: + DEFINE_SIZE_STATIC (5); +}; + +struct BigGlyphMetrics : SmallGlyphMetrics +{ + HBINT8 vertBearingX; + HBINT8 vertBearingY; + HBUINT8 vertAdvance; + public: + DEFINE_SIZE_STATIC (8); +}; + +struct SBitLineMetrics +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBINT8 ascender; + HBINT8 decender; + HBUINT8 widthMax; + HBINT8 caretSlopeNumerator; + HBINT8 caretSlopeDenominator; + HBINT8 caretOffset; + HBINT8 minOriginSB; + HBINT8 minAdvanceSB; + HBINT8 maxBeforeBL; + HBINT8 minAfterBL; + HBINT8 padding1; + HBINT8 padding2; + public: + DEFINE_SIZE_STATIC (12); +}; + + +/* + * Index Subtables. + */ + +struct IndexSubtableHeader +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT16 indexFormat; + HBUINT16 imageFormat; + HBUINT32 imageDataOffset; + public: + DEFINE_SIZE_STATIC (8); +}; + +template +struct IndexSubtableFormat1Or3 +{ + bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + offsetArrayZ.sanitize (c, glyph_count + 1)); + } + + bool get_image_data (unsigned int idx, + unsigned int *offset, + unsigned int *length) const + { + if (unlikely (offsetArrayZ[idx + 1] <= offsetArrayZ[idx])) + return false; + + *offset = header.imageDataOffset + offsetArrayZ[idx]; + *length = offsetArrayZ[idx + 1] - offsetArrayZ[idx]; + return true; + } + + bool add_offset (hb_serialize_context_t *c, + unsigned int offset, + unsigned int *size /* OUT (accumulated) */) + { + TRACE_SERIALIZE (this); + Offset embedded_offset; + embedded_offset = offset; + *size += sizeof (OffsetType); + auto *o = c->embed (embedded_offset); + return_trace ((bool) o); + } + + IndexSubtableHeader header; + UnsizedArrayOf> + offsetArrayZ; + public: + DEFINE_SIZE_ARRAY (8, offsetArrayZ); +}; + +struct IndexSubtableFormat1 : IndexSubtableFormat1Or3 {}; +struct IndexSubtableFormat3 : IndexSubtableFormat1Or3 {}; + +struct IndexSubtable +{ + bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const + { + TRACE_SANITIZE (this); + if (!u.header.sanitize (c)) return_trace (false); + switch (u.header.indexFormat) + { + case 1: return_trace (u.format1.sanitize (c, glyph_count)); + case 3: return_trace (u.format3.sanitize (c, glyph_count)); + default:return_trace (true); + } + } + + bool + finish_subtable (hb_serialize_context_t *c, + unsigned int cbdt_prime_len, + unsigned int num_glyphs, + unsigned int *size /* OUT (accumulated) */) + { + TRACE_SERIALIZE (this); + + unsigned int local_offset = cbdt_prime_len - u.header.imageDataOffset; + switch (u.header.indexFormat) + { + case 1: return_trace (u.format1.add_offset (c, local_offset, size)); + case 3: { + if (!u.format3.add_offset (c, local_offset, size)) + return_trace (false); + if (!(num_glyphs & 0x01)) // Pad to 32-bit alignment if needed. + return_trace (u.format3.add_offset (c, 0, size)); + return_trace (true); + } + // TODO: implement 2, 4, 5. + case 2: case 4: // No-op. + case 5: // Pad to 32-bit aligned. + default: return_trace (false); + } + } + + bool + fill_missing_glyphs (hb_serialize_context_t *c, + unsigned int cbdt_prime_len, + unsigned int num_missing, + unsigned int *size /* OUT (accumulated) */, + unsigned int *num_glyphs /* OUT (accumulated) */) + { + TRACE_SERIALIZE (this); + + unsigned int local_offset = cbdt_prime_len - u.header.imageDataOffset; + switch (u.header.indexFormat) + { + case 1: { + for (unsigned int i = 0; i < num_missing; i++) + { + if (unlikely (!u.format1.add_offset (c, local_offset, size))) + return_trace (false); + *num_glyphs += 1; + } + return_trace (true); + } + case 3: { + for (unsigned int i = 0; i < num_missing; i++) + { + if (unlikely (!u.format3.add_offset (c, local_offset, size))) + return_trace (false); + *num_glyphs += 1; + } + return_trace (true); + } + // TODO: implement 2, 4, 5. + case 2: // Add empty space in cbdt_prime?. + case 4: case 5: // No-op as sparse is supported. + default: return_trace (false); + } + } + + bool + copy_glyph_at_idx (hb_serialize_context_t *c, unsigned int idx, + const char *cbdt, unsigned int cbdt_length, + hb_vector_t *cbdt_prime /* INOUT */, + IndexSubtable *subtable_prime /* INOUT */, + unsigned int *size /* OUT (accumulated) */) const + { + TRACE_SERIALIZE (this); + + unsigned int offset, length, format; + if (unlikely (!get_image_data (idx, &offset, &length, &format))) return_trace (false); + if (unlikely (offset > cbdt_length || cbdt_length - offset < length)) return_trace (false); + + auto *header_prime = subtable_prime->get_header (); + unsigned int new_local_offset = cbdt_prime->length - (unsigned int) header_prime->imageDataOffset; + if (unlikely (!_copy_data_to_cbdt (cbdt_prime, cbdt + offset, length))) return_trace (false); + + return_trace (subtable_prime->add_offset (c, new_local_offset, size)); + } + + bool + add_offset (hb_serialize_context_t *c, unsigned int local_offset, + unsigned int *size /* OUT (accumulated) */) + { + TRACE_SERIALIZE (this); + switch (u.header.indexFormat) + { + case 1: return_trace (u.format1.add_offset (c, local_offset, size)); + case 3: return_trace (u.format3.add_offset (c, local_offset, size)); + // TODO: Implement tables 2, 4, 5 + case 2: // Should be a no-op. + case 4: case 5: // Handle sparse cases. + default: return_trace (false); + } + } + + bool get_extents (hb_glyph_extents_t *extents HB_UNUSED, bool scale HB_UNUSED) const + { + switch (u.header.indexFormat) + { + case 2: case 5: /* TODO */ + case 1: case 3: case 4: /* Variable-metrics formats do not have metrics here. */ + default:return (false); + } + } + + bool + get_image_data (unsigned int idx, unsigned int *offset, + unsigned int *length, unsigned int *format) const + { + *format = u.header.imageFormat; + switch (u.header.indexFormat) + { + case 1: return u.format1.get_image_data (idx, offset, length); + case 3: return u.format3.get_image_data (idx, offset, length); + default: return false; + } + } + + const IndexSubtableHeader* get_header () const { return &u.header; } + + void populate_header (unsigned index_format, + unsigned image_format, + unsigned int image_data_offset, + unsigned int *size) + { + u.header.indexFormat = index_format; + u.header.imageFormat = image_format; + u.header.imageDataOffset = image_data_offset; + switch (u.header.indexFormat) + { + case 1: *size += IndexSubtableFormat1::min_size; break; + case 3: *size += IndexSubtableFormat3::min_size; break; + } + } + + protected: + union { + IndexSubtableHeader header; + IndexSubtableFormat1 format1; + IndexSubtableFormat3 format3; + /* TODO: Format 2, 4, 5. */ + } u; + public: + DEFINE_SIZE_UNION (8, header); +}; + +struct IndexSubtableRecord +{ + /* XXX Remove this and fix by not inserting it into vector. */ + IndexSubtableRecord& operator = (const IndexSubtableRecord &o) + { + firstGlyphIndex = o.firstGlyphIndex; + lastGlyphIndex = o.lastGlyphIndex; + offsetToSubtable = (unsigned) o.offsetToSubtable; + assert (offsetToSubtable.is_null ()); + return *this; + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + firstGlyphIndex <= lastGlyphIndex && + offsetToSubtable.sanitize (c, base, lastGlyphIndex - firstGlyphIndex + 1)); + } + + const IndexSubtable* get_subtable (const void *base) const + { + return &(base+offsetToSubtable); + } + + bool add_new_subtable (hb_subset_context_t* c, + cblc_bitmap_size_subset_context_t *bitmap_size_context, + IndexSubtableRecord *record, + const hb_vector_t> *lookup, /* IN */ + const void *base, + unsigned int *start /* INOUT */) const + { + TRACE_SERIALIZE (this); + + auto *subtable = c->serializer->start_embed (); + if (unlikely (!subtable)) return_trace (false); + if (unlikely (!c->serializer->extend_min (subtable))) return_trace (false); + + auto *old_subtable = get_subtable (base); + auto *old_header = old_subtable->get_header (); + + subtable->populate_header (old_header->indexFormat, + old_header->imageFormat, + bitmap_size_context->cbdt_prime->length, + &bitmap_size_context->size); + + unsigned int num_glyphs = 0; + bool early_exit = false; + for (unsigned int i = *start; i < lookup->length; i++) + { + hb_codepoint_t new_gid = (*lookup)[i].first; + const IndexSubtableRecord *next_record = (*lookup)[i].second; + const IndexSubtable *next_subtable = next_record->get_subtable (base); + auto *next_header = next_subtable->get_header (); + if (next_header != old_header) + { + *start = i; + early_exit = true; + break; + } + unsigned int num_missing = record->add_glyph_for_subset (new_gid); + if (unlikely (!subtable->fill_missing_glyphs (c->serializer, + bitmap_size_context->cbdt_prime->length, + num_missing, + &bitmap_size_context->size, + &num_glyphs))) + return_trace (false); + + hb_codepoint_t old_gid = 0; + c->plan->old_gid_for_new_gid (new_gid, &old_gid); + if (old_gid < next_record->firstGlyphIndex) + return_trace (false); + + unsigned int old_idx = (unsigned int) old_gid - next_record->firstGlyphIndex; + if (unlikely (!next_subtable->copy_glyph_at_idx (c->serializer, + old_idx, + bitmap_size_context->cbdt, + bitmap_size_context->cbdt_length, + bitmap_size_context->cbdt_prime, + subtable, + &bitmap_size_context->size))) + return_trace (false); + num_glyphs += 1; + } + if (!early_exit) + *start = lookup->length; + if (unlikely (!subtable->finish_subtable (c->serializer, + bitmap_size_context->cbdt_prime->length, + num_glyphs, + &bitmap_size_context->size))) + return_trace (false); + return_trace (true); + } + + bool add_new_record (hb_subset_context_t *c, + cblc_bitmap_size_subset_context_t *bitmap_size_context, + const hb_vector_t> *lookup, /* IN */ + const void *base, + unsigned int *start, /* INOUT */ + hb_vector_t* records /* INOUT */) const + { + TRACE_SERIALIZE (this); + auto snap = c->serializer->snapshot (); + unsigned int old_size = bitmap_size_context->size; + unsigned int old_cbdt_prime_length = bitmap_size_context->cbdt_prime->length; + + // Set to invalid state to indicate filling glyphs is not yet started. + if (unlikely (!c->serializer->check_success (records->resize (records->length + 1)))) + return_trace (false); + + records->tail ().firstGlyphIndex = 1; + records->tail ().lastGlyphIndex = 0; + bitmap_size_context->size += IndexSubtableRecord::min_size; + + c->serializer->push (); + + if (unlikely (!add_new_subtable (c, bitmap_size_context, &(records->tail ()), lookup, base, start))) + { + c->serializer->pop_discard (); + c->serializer->revert (snap); + bitmap_size_context->cbdt_prime->shrink (old_cbdt_prime_length); + bitmap_size_context->size = old_size; + records->resize (records->length - 1); + return_trace (false); + } + + bitmap_size_context->num_tables += 1; + return_trace (true); + } + + unsigned int add_glyph_for_subset (hb_codepoint_t gid) + { + if (firstGlyphIndex > lastGlyphIndex) + { + firstGlyphIndex = gid; + lastGlyphIndex = gid; + return 0; + } + // TODO maybe assert? this shouldn't occur. + if (lastGlyphIndex > gid) + return 0; + unsigned int num_missing = (unsigned int) (gid - lastGlyphIndex - 1); + lastGlyphIndex = gid; + return num_missing; + } + + bool get_extents (hb_glyph_extents_t *extents, const void *base, bool scale) const + { return (base+offsetToSubtable).get_extents (extents, scale); } + + bool get_image_data (unsigned int gid, + const void *base, + unsigned int *offset, + unsigned int *length, + unsigned int *format) const + { + if (gid < firstGlyphIndex || gid > lastGlyphIndex) return false; + return (base+offsetToSubtable).get_image_data (gid - firstGlyphIndex, + offset, length, format); + } + + HBGlyphID16 firstGlyphIndex; + HBGlyphID16 lastGlyphIndex; + Offset32To offsetToSubtable; + public: + DEFINE_SIZE_STATIC (8); +}; + +struct IndexSubtableArray +{ + friend struct CBDT; + + bool sanitize (hb_sanitize_context_t *c, unsigned int count) const + { + TRACE_SANITIZE (this); + return_trace (indexSubtablesZ.sanitize (c, count, this)); + } + + void + build_lookup (hb_subset_context_t *c, cblc_bitmap_size_subset_context_t *bitmap_size_context, + hb_vector_t> *lookup /* OUT */) const + { + bool start_glyph_is_set = false; + for (hb_codepoint_t new_gid = 0; new_gid < c->plan->num_output_glyphs (); new_gid++) + { + hb_codepoint_t old_gid; + if (unlikely (!c->plan->old_gid_for_new_gid (new_gid, &old_gid))) continue; + + const IndexSubtableRecord* record = find_table (old_gid, bitmap_size_context->num_tables); + if (unlikely (!record)) continue; + + // Don't add gaps to the lookup. The best way to determine if a glyph is a + // gap is that it has no image data. + unsigned int offset, length, format; + if (unlikely (!record->get_image_data (old_gid, this, &offset, &length, &format))) continue; + + lookup->push (hb_pair_t (new_gid, record)); + + if (!start_glyph_is_set) + { + bitmap_size_context->start_glyph = new_gid; + start_glyph_is_set = true; + } + + bitmap_size_context->end_glyph = new_gid; + } + } + + bool + subset (hb_subset_context_t *c, + cblc_bitmap_size_subset_context_t *bitmap_size_context) const + { + TRACE_SUBSET (this); + + auto *dst = c->serializer->start_embed (); + if (unlikely (!dst)) return_trace (false); + + hb_vector_t> lookup; + build_lookup (c, bitmap_size_context, &lookup); + if (unlikely (!c->serializer->propagate_error (lookup))) + return false; + + bitmap_size_context->size = 0; + bitmap_size_context->num_tables = 0; + hb_vector_t records; + for (unsigned int start = 0; start < lookup.length;) + { + if (unlikely (!lookup[start].second->add_new_record (c, bitmap_size_context, &lookup, this, &start, &records))) + { + // Discard any leftover pushes to the serializer from successful records. + for (unsigned int i = 0; i < records.length; i++) + c->serializer->pop_discard (); + return_trace (false); + } + } + + /* Workaround to ensure offset ordering is from least to greatest when + * resolving links. */ + hb_vector_t objidxs; + for (unsigned int i = 0; i < records.length; i++) + objidxs.push (c->serializer->pop_pack ()); + for (unsigned int i = 0; i < records.length; i++) + { + IndexSubtableRecord* record = c->serializer->embed (records[i]); + if (unlikely (!record)) return_trace (false); + c->serializer->add_link (record->offsetToSubtable, objidxs[records.length - 1 - i]); + } + return_trace (true); + } + + public: + const IndexSubtableRecord* find_table (hb_codepoint_t glyph, unsigned int numTables) const + { + for (unsigned int i = 0; i < numTables; ++i) + { + unsigned int firstGlyphIndex = indexSubtablesZ[i].firstGlyphIndex; + unsigned int lastGlyphIndex = indexSubtablesZ[i].lastGlyphIndex; + if (firstGlyphIndex <= glyph && glyph <= lastGlyphIndex) + return &indexSubtablesZ[i]; + } + return nullptr; + } + + protected: + UnsizedArrayOf indexSubtablesZ; +}; + +struct BitmapSizeTable +{ + friend struct CBLC; + friend struct CBDT; + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + indexSubtableArrayOffset.sanitize (c, base, numberOfIndexSubtables) && + horizontal.sanitize (c) && + vertical.sanitize (c)); + } + + const IndexSubtableRecord * + find_table (hb_codepoint_t glyph, const void *base, const void **out_base) const + { + *out_base = &(base+indexSubtableArrayOffset); + return (base+indexSubtableArrayOffset).find_table (glyph, numberOfIndexSubtables); + } + + bool + subset (hb_subset_context_t *c, const void *base, + const char *cbdt, unsigned int cbdt_length, + hb_vector_t *cbdt_prime /* INOUT */) const + { + TRACE_SUBSET (this); + auto *out_table = c->serializer->embed (this); + if (unlikely (!out_table)) return_trace (false); + + cblc_bitmap_size_subset_context_t bitmap_size_context; + bitmap_size_context.cbdt = cbdt; + bitmap_size_context.cbdt_length = cbdt_length; + bitmap_size_context.cbdt_prime = cbdt_prime; + bitmap_size_context.size = indexTablesSize; + bitmap_size_context.num_tables = numberOfIndexSubtables; + bitmap_size_context.start_glyph = 1; + bitmap_size_context.end_glyph = 0; + + if (!out_table->indexSubtableArrayOffset.serialize_subset (c, + indexSubtableArrayOffset, + base, + &bitmap_size_context)) + return_trace (false); + if (!bitmap_size_context.size || + !bitmap_size_context.num_tables || + bitmap_size_context.start_glyph > bitmap_size_context.end_glyph) + return_trace (false); + + out_table->indexTablesSize = bitmap_size_context.size; + out_table->numberOfIndexSubtables = bitmap_size_context.num_tables; + out_table->startGlyphIndex = bitmap_size_context.start_glyph; + out_table->endGlyphIndex = bitmap_size_context.end_glyph; + return_trace (true); + } + + protected: + NNOffset32To + indexSubtableArrayOffset; + HBUINT32 indexTablesSize; + HBUINT32 numberOfIndexSubtables; + HBUINT32 colorRef; + SBitLineMetrics horizontal; + SBitLineMetrics vertical; + HBGlyphID16 startGlyphIndex; + HBGlyphID16 endGlyphIndex; + HBUINT8 ppemX; + HBUINT8 ppemY; + HBUINT8 bitDepth; + HBINT8 flags; + public: + DEFINE_SIZE_STATIC (48); +}; + + +/* + * Glyph Bitmap Data Formats. + */ + +struct GlyphBitmapDataFormat17 +{ + SmallGlyphMetrics glyphMetrics; + Array32Of data; + public: + DEFINE_SIZE_ARRAY (9, data); +}; + +struct GlyphBitmapDataFormat18 +{ + BigGlyphMetrics glyphMetrics; + Array32Of data; + public: + DEFINE_SIZE_ARRAY (12, data); +}; + +struct GlyphBitmapDataFormat19 +{ + Array32Of data; + public: + DEFINE_SIZE_ARRAY (4, data); +}; + +struct CBLC +{ + friend struct CBDT; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_CBLC; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (version.major == 2 || version.major == 3) && + sizeTables.sanitize (c, this)); + } + + static bool + sink_cbdt (hb_subset_context_t *c, hb_vector_t* cbdt_prime) + { + hb_blob_t *cbdt_prime_blob = hb_blob_create (cbdt_prime->arrayZ, + cbdt_prime->length, + HB_MEMORY_MODE_WRITABLE, + cbdt_prime->arrayZ, + hb_free); + cbdt_prime->init (); // Leak arrayZ to the blob. + bool ret = c->plan->add_table (HB_OT_TAG_CBDT, cbdt_prime_blob); + hb_blob_destroy (cbdt_prime_blob); + return ret; + } + + bool + subset_size_table (hb_subset_context_t *c, const BitmapSizeTable& table, + const char *cbdt /* IN */, unsigned int cbdt_length, + CBLC *cblc_prime /* INOUT */, hb_vector_t *cbdt_prime /* INOUT */) const + { + TRACE_SUBSET (this); + cblc_prime->sizeTables.len++; + + auto snap = c->serializer->snapshot (); + auto cbdt_prime_len = cbdt_prime->length; + + if (!table.subset (c, this, cbdt, cbdt_length, cbdt_prime)) + { + cblc_prime->sizeTables.len--; + c->serializer->revert (snap); + cbdt_prime->shrink (cbdt_prime_len); + return_trace (false); + } + return_trace (true); + } + + // Implemented in cc file as it depends on definition of CBDT. + HB_INTERNAL bool subset (hb_subset_context_t *c) const; + + protected: + const BitmapSizeTable &choose_strike (hb_font_t *font) const + { + unsigned count = sizeTables.len; + if (unlikely (!count)) + return Null (BitmapSizeTable); + + unsigned int requested_ppem = hb_max (font->x_ppem, font->y_ppem); + if (!requested_ppem) + requested_ppem = 1<<30; /* Choose largest strike. */ + unsigned int best_i = 0; + unsigned int best_ppem = hb_max (sizeTables[0].ppemX, sizeTables[0].ppemY); + + for (unsigned int i = 1; i < count; i++) + { + unsigned int ppem = hb_max (sizeTables[i].ppemX, sizeTables[i].ppemY); + if ((requested_ppem <= ppem && ppem < best_ppem) || + (requested_ppem > best_ppem && ppem > best_ppem)) + { + best_i = i; + best_ppem = ppem; + } + } + + return sizeTables[best_i]; + } + + protected: + FixedVersion<> version; + Array32Of sizeTables; + public: + DEFINE_SIZE_ARRAY (8, sizeTables); +}; + +struct CBDT +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_CBDT; + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { + this->cblc = hb_sanitize_context_t ().reference_table (face); + this->cbdt = hb_sanitize_context_t ().reference_table (face); + + upem = hb_face_get_upem (face); + } + ~accelerator_t () + { + this->cblc.destroy (); + this->cbdt.destroy (); + } + + bool + get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents, bool scale = true) const + { + const void *base; + const BitmapSizeTable &strike = this->cblc->choose_strike (font); + const IndexSubtableRecord *subtable_record = strike.find_table (glyph, cblc, &base); + if (!subtable_record || !strike.ppemX || !strike.ppemY) + return false; + + if (subtable_record->get_extents (extents, base, scale)) + return true; + + unsigned int image_offset = 0, image_length = 0, image_format = 0; + if (!subtable_record->get_image_data (glyph, base, &image_offset, &image_length, &image_format)) + return false; + + unsigned int cbdt_len = cbdt.get_length (); + if (unlikely (image_offset > cbdt_len || cbdt_len - image_offset < image_length)) + return false; + + switch (image_format) + { + case 17: { + if (unlikely (image_length < GlyphBitmapDataFormat17::min_size)) + return false; + auto &glyphFormat17 = StructAtOffset (this->cbdt, image_offset); + glyphFormat17.glyphMetrics.get_extents (font, extents, scale); + break; + } + case 18: { + if (unlikely (image_length < GlyphBitmapDataFormat18::min_size)) + return false; + auto &glyphFormat18 = StructAtOffset (this->cbdt, image_offset); + glyphFormat18.glyphMetrics.get_extents (font, extents, scale); + break; + } + default: return false; /* TODO: Support other image formats. */ + } + + /* Convert to font units. */ + if (scale) + { + float x_scale = upem / (float) strike.ppemX; + float y_scale = upem / (float) strike.ppemY; + extents->x_bearing = roundf (extents->x_bearing * x_scale); + extents->y_bearing = roundf (extents->y_bearing * y_scale); + extents->width = roundf (extents->width * x_scale); + extents->height = roundf (extents->height * y_scale); + } + + return true; + } + + hb_blob_t* + reference_png (hb_font_t *font, hb_codepoint_t glyph) const + { + const void *base; + const BitmapSizeTable &strike = this->cblc->choose_strike (font); + const IndexSubtableRecord *subtable_record = strike.find_table (glyph, cblc, &base); + if (!subtable_record || !strike.ppemX || !strike.ppemY) + return hb_blob_get_empty (); + + unsigned int image_offset = 0, image_length = 0, image_format = 0; + if (!subtable_record->get_image_data (glyph, base, &image_offset, &image_length, &image_format)) + return hb_blob_get_empty (); + + unsigned int cbdt_len = cbdt.get_length (); + if (unlikely (image_offset > cbdt_len || cbdt_len - image_offset < image_length)) + return hb_blob_get_empty (); + + switch (image_format) + { + case 17: + { + if (unlikely (image_length < GlyphBitmapDataFormat17::min_size)) + return hb_blob_get_empty (); + auto &glyphFormat17 = StructAtOffset (this->cbdt, image_offset); + return hb_blob_create_sub_blob (cbdt.get_blob (), + image_offset + GlyphBitmapDataFormat17::min_size, + glyphFormat17.data.len); + } + case 18: + { + if (unlikely (image_length < GlyphBitmapDataFormat18::min_size)) + return hb_blob_get_empty (); + auto &glyphFormat18 = StructAtOffset (this->cbdt, image_offset); + return hb_blob_create_sub_blob (cbdt.get_blob (), + image_offset + GlyphBitmapDataFormat18::min_size, + glyphFormat18.data.len); + } + case 19: + { + if (unlikely (image_length < GlyphBitmapDataFormat19::min_size)) + return hb_blob_get_empty (); + auto &glyphFormat19 = StructAtOffset (this->cbdt, image_offset); + return hb_blob_create_sub_blob (cbdt.get_blob (), + image_offset + GlyphBitmapDataFormat19::min_size, + glyphFormat19.data.len); + } + default: return hb_blob_get_empty (); /* TODO: Support other image formats. */ + } + } + + bool has_data () const { return cbdt.get_length (); } + + bool paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const + { + hb_glyph_extents_t extents; + hb_glyph_extents_t pixel_extents; + hb_blob_t *blob = reference_png (font, glyph); + + if (unlikely (blob == hb_blob_get_empty ())) + return false; + + if (unlikely (!hb_font_get_glyph_extents (font, glyph, &extents))) + return false; + + if (unlikely (!get_extents (font, glyph, &pixel_extents, false))) + return false; + + bool ret = funcs->image (data, + blob, + pixel_extents.width, -pixel_extents.height, + HB_PAINT_IMAGE_FORMAT_PNG, + font->slant_xy, + &extents); + + hb_blob_destroy (blob); + return ret; + } + + private: + hb_blob_ptr_t cblc; + hb_blob_ptr_t cbdt; + + unsigned int upem; + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (version.major == 2 || version.major == 3)); + } + + protected: + FixedVersion<> version; + UnsizedArrayOf dataZ; + public: + DEFINE_SIZE_ARRAY (4, dataZ); +}; + +inline bool +CBLC::subset (hb_subset_context_t *c) const +{ + TRACE_SUBSET (this); + + auto *cblc_prime = c->serializer->start_embed (); + + // Use a vector as a secondary buffer as the tables need to be built in parallel. + hb_vector_t cbdt_prime; + + if (unlikely (!cblc_prime)) return_trace (false); + if (unlikely (!c->serializer->extend_min (cblc_prime))) return_trace (false); + cblc_prime->version = version; + + hb_blob_t* cbdt_blob = hb_sanitize_context_t ().reference_table (c->plan->source); + unsigned int cbdt_length; + CBDT* cbdt = (CBDT *) hb_blob_get_data (cbdt_blob, &cbdt_length); + if (unlikely (cbdt_length < CBDT::min_size)) + { + hb_blob_destroy (cbdt_blob); + return_trace (false); + } + _copy_data_to_cbdt (&cbdt_prime, cbdt, CBDT::min_size); + + for (const BitmapSizeTable& table : + sizeTables.iter ()) + subset_size_table (c, table, (const char *) cbdt, cbdt_length, cblc_prime, &cbdt_prime); + + hb_blob_destroy (cbdt_blob); + + return_trace (CBLC::sink_cbdt (c, &cbdt_prime)); +} + +struct CBDT_accelerator_t : CBDT::accelerator_t { + CBDT_accelerator_t (hb_face_t *face) : CBDT::accelerator_t (face) {} +}; + + +} /* namespace OT */ + +#endif /* OT_COLOR_CBDT_CBDT_HH */ diff --git a/gfx/harfbuzz/src/OT/Color/COLR/COLR.hh b/gfx/harfbuzz/src/OT/Color/COLR/COLR.hh new file mode 100644 index 0000000000..2a47984294 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/COLR/COLR.hh @@ -0,0 +1,2436 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * Copyright © 2020 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Calder Kitagawa + */ + +#ifndef OT_COLOR_COLR_COLR_HH +#define OT_COLOR_COLR_COLR_HH + +#include "../../../hb.hh" +#include "../../../hb-open-type.hh" +#include "../../../hb-ot-var-common.hh" +#include "../../../hb-paint.hh" +#include "../../../hb-paint-extents.hh" + +/* + * COLR -- Color + * https://docs.microsoft.com/en-us/typography/opentype/spec/colr + */ +#define HB_OT_TAG_COLR HB_TAG('C','O','L','R') + +namespace OT { +struct hb_paint_context_t; +} + +namespace OT { + +struct COLR; + +struct Paint; + +struct hb_paint_context_t : + hb_dispatch_context_t +{ + template + return_t dispatch (const T &obj) { obj.paint_glyph (this); return hb_empty_t (); } + static return_t default_return_value () { return hb_empty_t (); } + + const COLR* get_colr_table () const + { return reinterpret_cast (base); } + +public: + const void *base; + hb_paint_funcs_t *funcs; + void *data; + hb_font_t *font; + unsigned int palette_index; + hb_color_t foreground; + VarStoreInstancer &instancer; + int depth_left = HB_MAX_NESTING_LEVEL; + int edge_count = HB_COLRV1_MAX_EDGE_COUNT; + + hb_paint_context_t (const void *base_, + hb_paint_funcs_t *funcs_, + void *data_, + hb_font_t *font_, + unsigned int palette_, + hb_color_t foreground_, + VarStoreInstancer &instancer_) : + base (base_), + funcs (funcs_), + data (data_), + font (font_), + palette_index (palette_), + foreground (foreground_), + instancer (instancer_) + { } + + hb_color_t get_color (unsigned int color_index, float alpha, hb_bool_t *is_foreground) + { + hb_color_t color = foreground; + + *is_foreground = true; + + if (color_index != 0xffff) + { + if (!funcs->custom_palette_color (data, color_index, &color)) + { + unsigned int clen = 1; + hb_face_t *face = hb_font_get_face (font); + + hb_ot_color_palette_get_colors (face, palette_index, color_index, &clen, &color); + } + + *is_foreground = false; + } + + return HB_COLOR (hb_color_get_blue (color), + hb_color_get_green (color), + hb_color_get_red (color), + hb_color_get_alpha (color) * alpha); + } + + inline void recurse (const Paint &paint); +}; + +struct hb_colrv1_closure_context_t : + hb_dispatch_context_t +{ + template + return_t dispatch (const T &obj) + { + if (unlikely (nesting_level_left == 0)) + return hb_empty_t (); + + if (paint_visited (&obj)) + return hb_empty_t (); + + nesting_level_left--; + obj.closurev1 (this); + nesting_level_left++; + return hb_empty_t (); + } + static return_t default_return_value () { return hb_empty_t (); } + + bool paint_visited (const void *paint) + { + hb_codepoint_t delta = (hb_codepoint_t) ((uintptr_t) paint - (uintptr_t) base); + if (visited_paint.in_error() || visited_paint.has (delta)) + return true; + + visited_paint.add (delta); + return false; + } + + const COLR* get_colr_table () const + { return reinterpret_cast (base); } + + void add_glyph (unsigned glyph_id) + { glyphs->add (glyph_id); } + + void add_layer_indices (unsigned first_layer_index, unsigned num_of_layers) + { layer_indices->add_range (first_layer_index, first_layer_index + num_of_layers - 1); } + + void add_palette_index (unsigned palette_index) + { palette_indices->add (palette_index); } + + public: + const void *base; + hb_set_t visited_paint; + hb_set_t *glyphs; + hb_set_t *layer_indices; + hb_set_t *palette_indices; + unsigned nesting_level_left; + + hb_colrv1_closure_context_t (const void *base_, + hb_set_t *glyphs_, + hb_set_t *layer_indices_, + hb_set_t *palette_indices_, + unsigned nesting_level_left_ = HB_MAX_NESTING_LEVEL) : + base (base_), + glyphs (glyphs_), + layer_indices (layer_indices_), + palette_indices (palette_indices_), + nesting_level_left (nesting_level_left_) + {} +}; + +struct LayerRecord +{ + operator hb_ot_color_layer_t () const { return {glyphId, colorIdx}; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBGlyphID16 glyphId; /* Glyph ID of layer glyph */ + Index colorIdx; /* Index value to use with a + * selected color palette. + * An index value of 0xFFFF + * is a special case indicating + * that the text foreground + * color (defined by a + * higher-level client) should + * be used and shall not be + * treated as actual index + * into CPAL ColorRecord array. */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct BaseGlyphRecord +{ + int cmp (hb_codepoint_t g) const + { return g < glyphId ? -1 : g > glyphId ? 1 : 0; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBGlyphID16 glyphId; /* Glyph ID of reference glyph */ + HBUINT16 firstLayerIdx; /* Index (from beginning of + * the Layer Records) to the + * layer record. There will be + * numLayers consecutive entries + * for this base glyph. */ + HBUINT16 numLayers; /* Number of color layers + * associated with this glyph */ + public: + DEFINE_SIZE_STATIC (6); +}; + +template +struct Variable +{ + static constexpr bool is_variable = true; + + Variable* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (this)); + } + + void closurev1 (hb_colrv1_closure_context_t* c) const + { value.closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + if (!value.subset (c, instancer, varIdxBase)) return_trace (false); + if (c->plan->all_axes_pinned) + return_trace (true); + + //TODO: update varIdxBase for partial-instancing + return_trace (c->serializer->embed (varIdxBase)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + value.paint_glyph (c, varIdxBase); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *stop, + const VarStoreInstancer &instancer) const + { + value.get_color_stop (c, stop, varIdxBase, instancer); + } + + hb_paint_extend_t get_extend () const + { + return value.get_extend (); + } + + protected: + T value; + public: + VarIdx varIdxBase; + public: + DEFINE_SIZE_STATIC (4 + T::static_size); +}; + +template +struct NoVariable +{ + static constexpr bool is_variable = false; + + static constexpr uint32_t varIdxBase = VarIdx::NO_VARIATION; + + NoVariable* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (this)); + } + + void closurev1 (hb_colrv1_closure_context_t* c) const + { value.closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + return_trace (value.subset (c, instancer, varIdxBase)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + value.paint_glyph (c, varIdxBase); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *stop, + const VarStoreInstancer &instancer) const + { + value.get_color_stop (c, stop, VarIdx::NO_VARIATION, instancer); + } + + hb_paint_extend_t get_extend () const + { + return value.get_extend (); + } + + T value; + public: + DEFINE_SIZE_STATIC (T::static_size); +}; + +// Color structures + +struct ColorStop +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { c->add_palette_index (paletteIndex); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->stopOffset.set_float (stopOffset.to_float(instancer (varIdxBase, 0))); + out->alpha.set_float (alpha.to_float (instancer (varIdxBase, 1))); + } + + return_trace (c->serializer->check_assign (out->paletteIndex, c->plan->colr_palettes.get (paletteIndex), + HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *out, + uint32_t varIdx, + const VarStoreInstancer &instancer) const + { + out->offset = stopOffset.to_float(instancer (varIdx, 0)); + out->color = c->get_color (paletteIndex, + alpha.to_float (instancer (varIdx, 1)), + &out->is_foreground); + } + + F2DOT14 stopOffset; + HBUINT16 paletteIndex; + F2DOT14 alpha; + public: + DEFINE_SIZE_STATIC (2 + 2 * F2DOT14::static_size); +}; + +struct Extend : HBUINT8 +{ + enum { + EXTEND_PAD = 0, + EXTEND_REPEAT = 1, + EXTEND_REFLECT = 2, + }; + public: + DEFINE_SIZE_STATIC (1); +}; + +template class Var> +struct ColorLine +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { + for (const auto &stop : stops.iter ()) + stop.closurev1 (c); + } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (this); + if (unlikely (!out)) return_trace (false); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + if (!c->serializer->check_assign (out->extend, extend, HB_SERIALIZE_ERROR_INT_OVERFLOW)) return_trace (false); + if (!c->serializer->check_assign (out->stops.len, stops.len, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW)) return_trace (false); + + for (const auto& stop : stops.iter ()) + { + if (!stop.subset (c, instancer)) return_trace (false); + } + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + stops.sanitize (c)); + } + + /* get up to count stops from start */ + unsigned int + get_color_stops (hb_paint_context_t *c, + unsigned int start, + unsigned int *count, + hb_color_stop_t *color_stops, + const VarStoreInstancer &instancer) const + { + unsigned int len = stops.len; + + if (count && color_stops) + { + unsigned int i; + for (i = 0; i < *count && start + i < len; i++) + stops[start + i].get_color_stop (c, &color_stops[i], instancer); + *count = i; + } + + return len; + } + + HB_INTERNAL static unsigned int static_get_color_stops (hb_color_line_t *color_line, + void *color_line_data, + unsigned int start, + unsigned int *count, + hb_color_stop_t *color_stops, + void *user_data) + { + const ColorLine *thiz = (const ColorLine *) color_line_data; + hb_paint_context_t *c = (hb_paint_context_t *) user_data; + return thiz->get_color_stops (c, start, count, color_stops, c->instancer); + } + + hb_paint_extend_t get_extend () const + { + return (hb_paint_extend_t) (unsigned int) extend; + } + + HB_INTERNAL static hb_paint_extend_t static_get_extend (hb_color_line_t *color_line, + void *color_line_data, + void *user_data) + { + const ColorLine *thiz = (const ColorLine *) color_line_data; + return thiz->get_extend (); + } + + Extend extend; + Array16Of> stops; + public: + DEFINE_SIZE_ARRAY_SIZED (3, stops); +}; + +// Composition modes + +// Compositing modes are taken from https://www.w3.org/TR/compositing-1/ +// NOTE: a brief audit of major implementations suggests most support most +// or all of the specified modes. +struct CompositeMode : HBUINT8 +{ + enum { + // Porter-Duff modes + // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators + COMPOSITE_CLEAR = 0, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_clear + COMPOSITE_SRC = 1, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_src + COMPOSITE_DEST = 2, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dst + COMPOSITE_SRC_OVER = 3, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcover + COMPOSITE_DEST_OVER = 4, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstover + COMPOSITE_SRC_IN = 5, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcin + COMPOSITE_DEST_IN = 6, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstin + COMPOSITE_SRC_OUT = 7, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcout + COMPOSITE_DEST_OUT = 8, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstout + COMPOSITE_SRC_ATOP = 9, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcatop + COMPOSITE_DEST_ATOP = 10, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstatop + COMPOSITE_XOR = 11, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_xor + COMPOSITE_PLUS = 12, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_plus + + // Blend modes + // https://www.w3.org/TR/compositing-1/#blending + COMPOSITE_SCREEN = 13, // https://www.w3.org/TR/compositing-1/#blendingscreen + COMPOSITE_OVERLAY = 14, // https://www.w3.org/TR/compositing-1/#blendingoverlay + COMPOSITE_DARKEN = 15, // https://www.w3.org/TR/compositing-1/#blendingdarken + COMPOSITE_LIGHTEN = 16, // https://www.w3.org/TR/compositing-1/#blendinglighten + COMPOSITE_COLOR_DODGE = 17, // https://www.w3.org/TR/compositing-1/#blendingcolordodge + COMPOSITE_COLOR_BURN = 18, // https://www.w3.org/TR/compositing-1/#blendingcolorburn + COMPOSITE_HARD_LIGHT = 19, // https://www.w3.org/TR/compositing-1/#blendinghardlight + COMPOSITE_SOFT_LIGHT = 20, // https://www.w3.org/TR/compositing-1/#blendingsoftlight + COMPOSITE_DIFFERENCE = 21, // https://www.w3.org/TR/compositing-1/#blendingdifference + COMPOSITE_EXCLUSION = 22, // https://www.w3.org/TR/compositing-1/#blendingexclusion + COMPOSITE_MULTIPLY = 23, // https://www.w3.org/TR/compositing-1/#blendingmultiply + + // Modes that, uniquely, do not operate on components + // https://www.w3.org/TR/compositing-1/#blendingnonseparable + COMPOSITE_HSL_HUE = 24, // https://www.w3.org/TR/compositing-1/#blendinghue + COMPOSITE_HSL_SATURATION = 25, // https://www.w3.org/TR/compositing-1/#blendingsaturation + COMPOSITE_HSL_COLOR = 26, // https://www.w3.org/TR/compositing-1/#blendingcolor + COMPOSITE_HSL_LUMINOSITY = 27, // https://www.w3.org/TR/compositing-1/#blendingluminosity + }; + public: + DEFINE_SIZE_STATIC (1); +}; + +struct Affine2x3 +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xx.set_float (xx.to_float(instancer (varIdxBase, 0))); + out->yx.set_float (yx.to_float(instancer (varIdxBase, 1))); + out->xy.set_float (xy.to_float(instancer (varIdxBase, 2))); + out->yy.set_float (yy.to_float(instancer (varIdxBase, 3))); + out->dx.set_float (dx.to_float(instancer (varIdxBase, 4))); + out->dy.set_float (dy.to_float(instancer (varIdxBase, 5))); + } + return_trace (true); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + c->funcs->push_transform (c->data, + xx.to_float (c->instancer (varIdxBase, 0)), + yx.to_float (c->instancer (varIdxBase, 1)), + xy.to_float (c->instancer (varIdxBase, 2)), + yy.to_float (c->instancer (varIdxBase, 3)), + dx.to_float (c->instancer (varIdxBase, 4)), + dy.to_float (c->instancer (varIdxBase, 5))); + } + + F16DOT16 xx; + F16DOT16 yx; + F16DOT16 xy; + F16DOT16 yy; + F16DOT16 dx; + F16DOT16 dy; + public: + DEFINE_SIZE_STATIC (6 * F16DOT16::static_size); +}; + +struct PaintColrLayers +{ + void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer HB_UNUSED) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + return_trace (c->serializer->check_assign (out->firstLayerIndex, c->plan->colrv1_layers.get (firstLayerIndex), + HB_SERIALIZE_ERROR_INT_OVERFLOW)); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + inline void paint_glyph (hb_paint_context_t *c) const; + + HBUINT8 format; /* format = 1 */ + HBUINT8 numLayers; + HBUINT32 firstLayerIndex; /* index into COLRv1::layerList */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct PaintSolid +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { c->add_palette_index (paletteIndex); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->alpha.set_float (alpha.to_float (instancer (varIdxBase, 0))); + + if (format == 3 && c->plan->all_axes_pinned) + out->format = 2; + + return_trace (c->serializer->check_assign (out->paletteIndex, c->plan->colr_palettes.get (paletteIndex), + HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + hb_bool_t is_foreground; + hb_color_t color; + + color = c->get_color (paletteIndex, + alpha.to_float (c->instancer (varIdxBase, 0)), + &is_foreground); + c->funcs->color (c->data, is_foreground, color); + } + + HBUINT8 format; /* format = 2(noVar) or 3(Var)*/ + HBUINT16 paletteIndex; + F2DOT14 alpha; + public: + DEFINE_SIZE_STATIC (3 + F2DOT14::static_size); +}; + +template class Var> +struct PaintLinearGradient +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { (this+colorLine).closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->x0 = x0 + (int) roundf (instancer (varIdxBase, 0)); + out->y0 = y0 + (int) roundf (instancer (varIdxBase, 1)); + out->x1 = x1 + (int) roundf (instancer (varIdxBase, 2)); + out->y1 = y1 + (int) roundf (instancer (varIdxBase, 3)); + out->x2 = x2 + (int) roundf (instancer (varIdxBase, 4)); + out->y2 = y2 + (int) roundf (instancer (varIdxBase, 5)); + } + + if (format == 5 && c->plan->all_axes_pinned) + out->format = 4; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->linear_gradient (c->data, &cl, + x0 + c->instancer (varIdxBase, 0), + y0 + c->instancer (varIdxBase, 1), + x1 + c->instancer (varIdxBase, 2), + y1 + c->instancer (varIdxBase, 3), + x2 + c->instancer (varIdxBase, 4), + y2 + c->instancer (varIdxBase, 5)); + } + + HBUINT8 format; /* format = 4(noVar) or 5 (Var) */ + Offset24To> colorLine; /* Offset (from beginning of PaintLinearGradient + * table) to ColorLine subtable. */ + FWORD x0; + FWORD y0; + FWORD x1; + FWORD y1; + FWORD x2; + FWORD y2; + public: + DEFINE_SIZE_STATIC (4 + 6 * FWORD::static_size); +}; + +template class Var> +struct PaintRadialGradient +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { (this+colorLine).closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->x0 = x0 + (int) roundf (instancer (varIdxBase, 0)); + out->y0 = y0 + (int) roundf (instancer (varIdxBase, 1)); + out->radius0 = radius0 + (unsigned) roundf (instancer (varIdxBase, 2)); + out->x1 = x1 + (int) roundf (instancer (varIdxBase, 3)); + out->y1 = y1 + (int) roundf (instancer (varIdxBase, 4)); + out->radius1 = radius1 + (unsigned) roundf (instancer (varIdxBase, 5)); + } + + if (format == 7 && c->plan->all_axes_pinned) + out->format = 6; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->radial_gradient (c->data, &cl, + x0 + c->instancer (varIdxBase, 0), + y0 + c->instancer (varIdxBase, 1), + radius0 + c->instancer (varIdxBase, 2), + x1 + c->instancer (varIdxBase, 3), + y1 + c->instancer (varIdxBase, 4), + radius1 + c->instancer (varIdxBase, 5)); + } + + HBUINT8 format; /* format = 6(noVar) or 7 (Var) */ + Offset24To> colorLine; /* Offset (from beginning of PaintRadialGradient + * table) to ColorLine subtable. */ + FWORD x0; + FWORD y0; + UFWORD radius0; + FWORD x1; + FWORD y1; + UFWORD radius1; + public: + DEFINE_SIZE_STATIC (4 + 6 * FWORD::static_size); +}; + +template class Var> +struct PaintSweepGradient +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { (this+colorLine).closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 0)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 1)); + out->startAngle.set_float (startAngle.to_float (instancer (varIdxBase, 2))); + out->endAngle.set_float (endAngle.to_float (instancer (varIdxBase, 3))); + } + + if (format == 9 && c->plan->all_axes_pinned) + out->format = 8; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->sweep_gradient (c->data, &cl, + centerX + c->instancer (varIdxBase, 0), + centerY + c->instancer (varIdxBase, 1), + (startAngle.to_float (c->instancer (varIdxBase, 2)) + 1) * HB_PI, + (endAngle.to_float (c->instancer (varIdxBase, 3)) + 1) * HB_PI); + } + + HBUINT8 format; /* format = 8(noVar) or 9 (Var) */ + Offset24To> colorLine; /* Offset (from beginning of PaintSweepGradient + * table) to ColorLine subtable. */ + FWORD centerX; + FWORD centerY; + F2DOT14 startAngle; + F2DOT14 endAngle; + public: + DEFINE_SIZE_STATIC (4 + 2 * FWORD::static_size + 2 * F2DOT14::static_size); +}; + +// Paint a non-COLR glyph, filled as indicated by paint. +struct PaintGlyph +{ + void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (! c->serializer->check_assign (out->gid, c->plan->glyph_map->get (gid), + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + + return_trace (out->paint.serialize_subset (c, paint, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && paint.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + c->funcs->push_inverse_root_transform (c->data, c->font); + c->funcs->push_clip_glyph (c->data, gid, c->font); + c->funcs->push_root_transform (c->data, c->font); + c->recurse (this+paint); + c->funcs->pop_transform (c->data); + c->funcs->pop_clip (c->data); + c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 10 */ + Offset24To paint; /* Offset (from beginning of PaintGlyph table) to Paint subtable. */ + HBUINT16 gid; + public: + DEFINE_SIZE_STATIC (6); +}; + +struct PaintColrGlyph +{ + void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer HB_UNUSED) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + return_trace (c->serializer->check_assign (out->gid, c->plan->glyph_map->get (gid), + HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + inline void paint_glyph (hb_paint_context_t *c) const; + + HBUINT8 format; /* format = 11 */ + HBUINT16 gid; + public: + DEFINE_SIZE_STATIC (3); +}; + +template class Var> +struct PaintTransform +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + if (!out->transform.serialize_subset (c, transform, this, instancer)) return_trace (false); + if (format == 13 && c->plan->all_axes_pinned) + out->format = 12; + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + src.sanitize (c, this) && + transform.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + (this+transform).paint_glyph (c); + c->recurse (this+src); + c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 12(noVar) or 13 (Var) */ + Offset24To src; /* Offset (from beginning of PaintTransform table) to Paint subtable. */ + Offset24To> transform; + public: + DEFINE_SIZE_STATIC (7); +}; + +struct PaintTranslate +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->dx = dx + (int) roundf (instancer (varIdxBase, 0)); + out->dy = dy + (int) roundf (instancer (varIdxBase, 1)); + } + + if (format == 15 && c->plan->all_axes_pinned) + out->format = 14; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float ddx = dx + c->instancer (varIdxBase, 0); + float ddy = dy + c->instancer (varIdxBase, 1); + + bool p1 = c->funcs->push_translate (c->data, ddx, ddy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 14(noVar) or 15 (Var) */ + Offset24To src; /* Offset (from beginning of PaintTranslate table) to Paint subtable. */ + FWORD dx; + FWORD dy; + public: + DEFINE_SIZE_STATIC (4 + 2 * FWORD::static_size); +}; + +struct PaintScale +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scaleX.set_float (scaleX.to_float (instancer (varIdxBase, 0))); + out->scaleY.set_float (scaleY.to_float (instancer (varIdxBase, 1))); + } + + if (format == 17 && c->plan->all_axes_pinned) + out->format = 16; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float sx = scaleX.to_float (c->instancer (varIdxBase, 0)); + float sy = scaleY.to_float (c->instancer (varIdxBase, 1)); + + bool p1 = c->funcs->push_scale (c->data, sx, sy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 16 (noVar) or 17(Var) */ + Offset24To src; /* Offset (from beginning of PaintScale table) to Paint subtable. */ + F2DOT14 scaleX; + F2DOT14 scaleY; + public: + DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size); +}; + +struct PaintScaleAroundCenter +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scaleX.set_float (scaleX.to_float (instancer (varIdxBase, 0))); + out->scaleY.set_float (scaleY.to_float (instancer (varIdxBase, 1))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 2)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 19 && c->plan->all_axes_pinned) + out->format = 18; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float sx = scaleX.to_float (c->instancer (varIdxBase, 0)); + float sy = scaleY.to_float (c->instancer (varIdxBase, 1)); + float tCenterX = centerX + c->instancer (varIdxBase, 2); + float tCenterY = centerY + c->instancer (varIdxBase, 3); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_scale (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 18 (noVar) or 19(Var) */ + Offset24To src; /* Offset (from beginning of PaintScaleAroundCenter table) to Paint subtable. */ + F2DOT14 scaleX; + F2DOT14 scaleY; + FWORD centerX; + FWORD centerY; + public: + DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size + 2 * FWORD::static_size); +}; + +struct PaintScaleUniform +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->scale.set_float (scale.to_float (instancer (varIdxBase, 0))); + + if (format == 21 && c->plan->all_axes_pinned) + out->format = 20; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float s = scale.to_float (c->instancer (varIdxBase, 0)); + + bool p1 = c->funcs->push_scale (c->data, s, s); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 20 (noVar) or 21(Var) */ + Offset24To src; /* Offset (from beginning of PaintScaleUniform table) to Paint subtable. */ + F2DOT14 scale; + public: + DEFINE_SIZE_STATIC (4 + F2DOT14::static_size); +}; + +struct PaintScaleUniformAroundCenter +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scale.set_float (scale.to_float (instancer (varIdxBase, 0))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 1)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 2)); + } + + if (format == 23 && c->plan->all_axes_pinned) + out->format = 22; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float s = scale.to_float (c->instancer (varIdxBase, 0)); + float tCenterX = centerX + c->instancer (varIdxBase, 1); + float tCenterY = centerY + c->instancer (varIdxBase, 2); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_scale (c->data, s, s); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 22 (noVar) or 23(Var) */ + Offset24To src; /* Offset (from beginning of PaintScaleUniformAroundCenter table) to Paint subtable. */ + F2DOT14 scale; + FWORD centerX; + FWORD centerY; + public: + DEFINE_SIZE_STATIC (4 + F2DOT14::static_size + 2 * FWORD::static_size); +}; + +struct PaintRotate +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->angle.set_float (angle.to_float (instancer (varIdxBase, 0))); + + if (format == 25 && c->plan->all_axes_pinned) + out->format = 24; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float a = angle.to_float (c->instancer (varIdxBase, 0)); + + bool p1 = c->funcs->push_rotate (c->data, a); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 24 (noVar) or 25(Var) */ + Offset24To src; /* Offset (from beginning of PaintRotate table) to Paint subtable. */ + F2DOT14 angle; + public: + DEFINE_SIZE_STATIC (4 + F2DOT14::static_size); +}; + +struct PaintRotateAroundCenter +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->angle.set_float (angle.to_float (instancer (varIdxBase, 0))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 1)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 2)); + } + + if (format ==27 && c->plan->all_axes_pinned) + out->format = 26; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float a = angle.to_float (c->instancer (varIdxBase, 0)); + float tCenterX = centerX + c->instancer (varIdxBase, 1); + float tCenterY = centerY + c->instancer (varIdxBase, 2); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_rotate (c->data, a); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 26 (noVar) or 27(Var) */ + Offset24To src; /* Offset (from beginning of PaintRotateAroundCenter table) to Paint subtable. */ + F2DOT14 angle; + FWORD centerX; + FWORD centerY; + public: + DEFINE_SIZE_STATIC (4 + F2DOT14::static_size + 2 * FWORD::static_size); +}; + +struct PaintSkew +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xSkewAngle.set_float (xSkewAngle.to_float (instancer (varIdxBase, 0))); + out->ySkewAngle.set_float (ySkewAngle.to_float (instancer (varIdxBase, 1))); + } + + if (format == 29 && c->plan->all_axes_pinned) + out->format = 28; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float sx = xSkewAngle.to_float(c->instancer (varIdxBase, 0)); + float sy = ySkewAngle.to_float(c->instancer (varIdxBase, 1)); + + bool p1 = c->funcs->push_skew (c->data, sx, sy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 28(noVar) or 29 (Var) */ + Offset24To src; /* Offset (from beginning of PaintSkew table) to Paint subtable. */ + F2DOT14 xSkewAngle; + F2DOT14 ySkewAngle; + public: + DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size); +}; + +struct PaintSkewAroundCenter +{ + HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xSkewAngle.set_float (xSkewAngle.to_float (instancer (varIdxBase, 0))); + out->ySkewAngle.set_float (ySkewAngle.to_float (instancer (varIdxBase, 1))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 2)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 31 && c->plan->all_axes_pinned) + out->format = 30; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + float sx = xSkewAngle.to_float(c->instancer (varIdxBase, 0)); + float sy = ySkewAngle.to_float(c->instancer (varIdxBase, 1)); + float tCenterX = centerX + c->instancer (varIdxBase, 2); + float tCenterY = centerY + c->instancer (varIdxBase, 3); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_skew (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + HBUINT8 format; /* format = 30(noVar) or 31 (Var) */ + Offset24To src; /* Offset (from beginning of PaintSkewAroundCenter table) to Paint subtable. */ + F2DOT14 xSkewAngle; + F2DOT14 ySkewAngle; + FWORD centerX; + FWORD centerY; + public: + DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size + 2 * FWORD::static_size); +}; + +struct PaintComposite +{ + void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (!out->src.serialize_subset (c, src, this, instancer)) return_trace (false); + return_trace (out->backdrop.serialize_subset (c, backdrop, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + src.sanitize (c, this) && + backdrop.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + c->recurse (this+backdrop); + c->funcs->push_group (c->data); + c->recurse (this+src); + c->funcs->pop_group (c->data, (hb_paint_composite_mode_t) (int) mode); + } + + HBUINT8 format; /* format = 32 */ + Offset24To src; /* Offset (from beginning of PaintComposite table) to source Paint subtable. */ + CompositeMode mode; /* If mode is unrecognized use COMPOSITE_CLEAR */ + Offset24To backdrop; /* Offset (from beginning of PaintComposite table) to backdrop Paint subtable. */ + public: + DEFINE_SIZE_STATIC (8); +}; + +struct ClipBoxData +{ + int xMin, yMin, xMax, yMax; +}; + +struct ClipBoxFormat1 +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_clip_box (ClipBoxData &clip_box, const VarStoreInstancer &instancer HB_UNUSED) const + { + clip_box.xMin = xMin; + clip_box.yMin = yMin; + clip_box.xMax = xMax; + clip_box.yMax = yMax; + } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xMin = xMin + (int) roundf (instancer (varIdxBase, 0)); + out->yMin = yMin + (int) roundf (instancer (varIdxBase, 1)); + out->xMax = xMax + (int) roundf (instancer (varIdxBase, 2)); + out->yMax = yMax + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 2 && c->plan->all_axes_pinned) + out->format = 1; + + return_trace (true); + } + + public: + HBUINT8 format; /* format = 1(noVar) or 2(Var)*/ + FWORD xMin; + FWORD yMin; + FWORD xMax; + FWORD yMax; + public: + DEFINE_SIZE_STATIC (1 + 4 * FWORD::static_size); +}; + +struct ClipBoxFormat2 : Variable +{ + void get_clip_box (ClipBoxData &clip_box, const VarStoreInstancer &instancer) const + { + value.get_clip_box(clip_box, instancer); + if (instancer) + { + clip_box.xMin += roundf (instancer (varIdxBase, 0)); + clip_box.yMin += roundf (instancer (varIdxBase, 1)); + clip_box.xMax += roundf (instancer (varIdxBase, 2)); + clip_box.yMax += roundf (instancer (varIdxBase, 3)); + } + } +}; + +struct ClipBox +{ + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + switch (u.format) { + case 1: return_trace (u.format1.subset (c, instancer, VarIdx::NO_VARIATION)); + case 2: return_trace (u.format2.subset (c, instancer)); + default:return_trace (c->default_return_value ()); + } + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } + + bool get_extents (hb_glyph_extents_t *extents, + const VarStoreInstancer &instancer) const + { + ClipBoxData clip_box; + switch (u.format) { + case 1: + u.format1.get_clip_box (clip_box, instancer); + break; + case 2: + u.format2.get_clip_box (clip_box, instancer); + break; + default: + return false; + } + + extents->x_bearing = clip_box.xMin; + extents->y_bearing = clip_box.yMax; + extents->width = clip_box.xMax - clip_box.xMin; + extents->height = clip_box.yMin - clip_box.yMax; + return true; + } + + protected: + union { + HBUINT8 format; /* Format identifier */ + ClipBoxFormat1 format1; + ClipBoxFormat2 format2; + } u; +}; + +struct ClipRecord +{ + int cmp (hb_codepoint_t g) const + { return g < startGlyphID ? -1 : g <= endGlyphID ? 0 : +1; } + + bool subset (hb_subset_context_t *c, + const void *base, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + return_trace (out->clipBox.serialize_subset (c, clipBox, base, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && clipBox.sanitize (c, base)); + } + + bool get_extents (hb_glyph_extents_t *extents, + const void *base, + const VarStoreInstancer &instancer) const + { + return (base+clipBox).get_extents (extents, instancer); + } + + public: + HBUINT16 startGlyphID; // first gid clip applies to + HBUINT16 endGlyphID; // last gid clip applies to, inclusive + Offset24To clipBox; // Box or VarBox + public: + DEFINE_SIZE_STATIC (7); +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, ClipRecord); + +struct ClipList +{ + unsigned serialize_clip_records (hb_subset_context_t *c, + const VarStoreInstancer &instancer, + const hb_set_t& gids, + const hb_map_t& gid_offset_map) const + { + TRACE_SERIALIZE (this); + if (gids.is_empty () || + gid_offset_map.get_population () != gids.get_population ()) + return_trace (0); + + unsigned count = 0; + + hb_codepoint_t start_gid= gids.get_min (); + hb_codepoint_t prev_gid = start_gid; + + unsigned offset = gid_offset_map.get (start_gid); + unsigned prev_offset = offset; + for (const hb_codepoint_t _ : gids.iter ()) + { + if (_ == start_gid) continue; + + offset = gid_offset_map.get (_); + if (_ == prev_gid + 1 && offset == prev_offset) + { + prev_gid = _; + continue; + } + + ClipRecord record; + record.startGlyphID = start_gid; + record.endGlyphID = prev_gid; + record.clipBox = prev_offset; + + if (!record.subset (c, this, instancer)) return_trace (0); + count++; + + start_gid = _; + prev_gid = _; + prev_offset = offset; + } + + //last one + { + ClipRecord record; + record.startGlyphID = start_gid; + record.endGlyphID = prev_gid; + record.clipBox = prev_offset; + if (!record.subset (c, this, instancer)) return_trace (0); + count++; + } + return_trace (count); + } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + if (!c->serializer->check_assign (out->format, format, HB_SERIALIZE_ERROR_INT_OVERFLOW)) return_trace (false); + + const hb_set_t& glyphset = c->plan->_glyphset_colred; + const hb_map_t &glyph_map = *c->plan->glyph_map; + + hb_map_t new_gid_offset_map; + hb_set_t new_gids; + for (const ClipRecord& record : clips.iter ()) + { + unsigned start_gid = record.startGlyphID; + unsigned end_gid = record.endGlyphID; + for (unsigned gid = start_gid; gid <= end_gid; gid++) + { + if (!glyphset.has (gid) || !glyph_map.has (gid)) continue; + unsigned new_gid = glyph_map.get (gid); + new_gid_offset_map.set (new_gid, record.clipBox); + new_gids.add (new_gid); + } + } + + unsigned count = serialize_clip_records (c, instancer, new_gids, new_gid_offset_map); + if (!count) return_trace (false); + return_trace (c->serializer->check_assign (out->clips.len, count, HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + // TODO Make a formatted struct! + return_trace (c->check_struct (this) && clips.sanitize (c, this)); + } + + bool + get_extents (hb_codepoint_t gid, + hb_glyph_extents_t *extents, + const VarStoreInstancer &instancer) const + { + auto *rec = clips.as_array ().bsearch (gid); + if (rec) + { + rec->get_extents (extents, this, instancer); + return true; + } + return false; + } + + HBUINT8 format; // Set to 1. + SortedArray32Of clips; // Clip records, sorted by startGlyphID + public: + DEFINE_SIZE_ARRAY_SIZED (5, clips); +}; + +struct Paint +{ + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + + if (unlikely (!c->check_start_recursion (HB_MAX_NESTING_LEVEL))) + return_trace (c->no_dispatch_return_value ()); + + return_trace (c->end_recursion (this->dispatch (c, std::forward (ds)...))); + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.paintformat1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.paintformat2, std::forward (ds)...)); + case 3: return_trace (c->dispatch (u.paintformat3, std::forward (ds)...)); + case 4: return_trace (c->dispatch (u.paintformat4, std::forward (ds)...)); + case 5: return_trace (c->dispatch (u.paintformat5, std::forward (ds)...)); + case 6: return_trace (c->dispatch (u.paintformat6, std::forward (ds)...)); + case 7: return_trace (c->dispatch (u.paintformat7, std::forward (ds)...)); + case 8: return_trace (c->dispatch (u.paintformat8, std::forward (ds)...)); + case 9: return_trace (c->dispatch (u.paintformat9, std::forward (ds)...)); + case 10: return_trace (c->dispatch (u.paintformat10, std::forward (ds)...)); + case 11: return_trace (c->dispatch (u.paintformat11, std::forward (ds)...)); + case 12: return_trace (c->dispatch (u.paintformat12, std::forward (ds)...)); + case 13: return_trace (c->dispatch (u.paintformat13, std::forward (ds)...)); + case 14: return_trace (c->dispatch (u.paintformat14, std::forward (ds)...)); + case 15: return_trace (c->dispatch (u.paintformat15, std::forward (ds)...)); + case 16: return_trace (c->dispatch (u.paintformat16, std::forward (ds)...)); + case 17: return_trace (c->dispatch (u.paintformat17, std::forward (ds)...)); + case 18: return_trace (c->dispatch (u.paintformat18, std::forward (ds)...)); + case 19: return_trace (c->dispatch (u.paintformat19, std::forward (ds)...)); + case 20: return_trace (c->dispatch (u.paintformat20, std::forward (ds)...)); + case 21: return_trace (c->dispatch (u.paintformat21, std::forward (ds)...)); + case 22: return_trace (c->dispatch (u.paintformat22, std::forward (ds)...)); + case 23: return_trace (c->dispatch (u.paintformat23, std::forward (ds)...)); + case 24: return_trace (c->dispatch (u.paintformat24, std::forward (ds)...)); + case 25: return_trace (c->dispatch (u.paintformat25, std::forward (ds)...)); + case 26: return_trace (c->dispatch (u.paintformat26, std::forward (ds)...)); + case 27: return_trace (c->dispatch (u.paintformat27, std::forward (ds)...)); + case 28: return_trace (c->dispatch (u.paintformat28, std::forward (ds)...)); + case 29: return_trace (c->dispatch (u.paintformat29, std::forward (ds)...)); + case 30: return_trace (c->dispatch (u.paintformat30, std::forward (ds)...)); + case 31: return_trace (c->dispatch (u.paintformat31, std::forward (ds)...)); + case 32: return_trace (c->dispatch (u.paintformat32, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } + + protected: + union { + HBUINT8 format; + PaintColrLayers paintformat1; + NoVariable paintformat2; + Variable paintformat3; + NoVariable> paintformat4; + Variable> paintformat5; + NoVariable> paintformat6; + Variable> paintformat7; + NoVariable> paintformat8; + Variable> paintformat9; + PaintGlyph paintformat10; + PaintColrGlyph paintformat11; + PaintTransform paintformat12; + PaintTransform paintformat13; + NoVariable paintformat14; + Variable paintformat15; + NoVariable paintformat16; + Variable paintformat17; + NoVariable paintformat18; + Variable paintformat19; + NoVariable paintformat20; + Variable paintformat21; + NoVariable paintformat22; + Variable paintformat23; + NoVariable paintformat24; + Variable paintformat25; + NoVariable paintformat26; + Variable paintformat27; + NoVariable paintformat28; + Variable paintformat29; + NoVariable paintformat30; + Variable paintformat31; + PaintComposite paintformat32; + } u; + public: + DEFINE_SIZE_MIN (2); +}; + +struct BaseGlyphPaintRecord +{ + int cmp (hb_codepoint_t g) const + { return g < glyphId ? -1 : g > glyphId ? 1 : 0; } + + bool serialize (hb_serialize_context_t *s, const hb_map_t* glyph_map, + const void* src_base, hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SERIALIZE (this); + auto *out = s->embed (this); + if (unlikely (!out)) return_trace (false); + if (!s->check_assign (out->glyphId, glyph_map->get (glyphId), + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + + return_trace (out->paint.serialize_subset (c, paint, src_base, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && paint.sanitize (c, base))); + } + + public: + HBGlyphID16 glyphId; /* Glyph ID of reference glyph */ + Offset32To paint; /* Offset (from beginning of BaseGlyphPaintRecord array) to Paint, + * Typically PaintColrLayers */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct BaseGlyphList : SortedArray32Of +{ + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + const hb_set_t* glyphset = &c->plan->_glyphset_colred; + + for (const auto& _ : as_array ()) + { + unsigned gid = _.glyphId; + if (!glyphset->has (gid)) continue; + + if (_.serialize (c->serializer, c->plan->glyph_map, this, c, instancer)) out->len++; + else return_trace (false); + } + + return_trace (out->len != 0); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (SortedArray32Of::sanitize (c, this)); + } +}; + +struct LayerList : Array32OfOffset32To +{ + const Paint& get_paint (unsigned i) const + { return this+(*this)[i]; } + + bool subset (hb_subset_context_t *c, + const VarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + for (const auto& _ : + hb_enumerate (*this) + | hb_filter (c->plan->colrv1_layers, hb_first)) + + { + auto *o = out->serialize_append (c->serializer); + if (unlikely (!o) || !o->serialize_subset (c, _.second, this, instancer)) + return_trace (false); + } + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (Array32OfOffset32To::sanitize (c, this)); + } +}; + +struct COLR +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_COLR; + + bool has_v0_data () const { return numBaseGlyphs; } + bool has_v1_data () const + { + if (version == 1) + return (this+baseGlyphList).len > 0; + + return false; + } + + unsigned int get_glyph_layers (hb_codepoint_t glyph, + unsigned int start_offset, + unsigned int *count, /* IN/OUT. May be NULL. */ + hb_ot_color_layer_t *layers /* OUT. May be NULL. */) const + { + const BaseGlyphRecord &record = (this+baseGlyphsZ).bsearch (numBaseGlyphs, glyph); + + hb_array_t all_layers = (this+layersZ).as_array (numLayers); + hb_array_t glyph_layers = all_layers.sub_array (record.firstLayerIdx, + record.numLayers); + if (count) + { + + glyph_layers.sub_array (start_offset, count) + | hb_sink (hb_array (layers, *count)) + ; + } + return glyph_layers.length; + } + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { colr = hb_sanitize_context_t ().reference_table (face); } + ~accelerator_t () { this->colr.destroy (); } + + bool is_valid () { return colr.get_blob ()->length; } + + void closure_glyphs (hb_codepoint_t glyph, + hb_set_t *related_ids /* OUT */) const + { colr->closure_glyphs (glyph, related_ids); } + + void closure_V0palette_indices (const hb_set_t *glyphs, + hb_set_t *palettes /* OUT */) const + { colr->closure_V0palette_indices (glyphs, palettes); } + + void closure_forV1 (hb_set_t *glyphset, + hb_set_t *layer_indices, + hb_set_t *palette_indices) const + { colr->closure_forV1 (glyphset, layer_indices, palette_indices); } + + private: + hb_blob_ptr_t colr; + }; + + void closure_glyphs (hb_codepoint_t glyph, + hb_set_t *related_ids /* OUT */) const + { + const BaseGlyphRecord *record = get_base_glyph_record (glyph); + if (!record) return; + + auto glyph_layers = (this+layersZ).as_array (numLayers).sub_array (record->firstLayerIdx, + record->numLayers); + if (!glyph_layers.length) return; + related_ids->add_array (&glyph_layers[0].glyphId, glyph_layers.length, LayerRecord::min_size); + } + + void closure_V0palette_indices (const hb_set_t *glyphs, + hb_set_t *palettes /* OUT */) const + { + if (!numBaseGlyphs || !numLayers) return; + hb_array_t baseGlyphs = (this+baseGlyphsZ).as_array (numBaseGlyphs); + hb_array_t all_layers = (this+layersZ).as_array (numLayers); + + for (const BaseGlyphRecord record : baseGlyphs) + { + if (!glyphs->has (record.glyphId)) continue; + hb_array_t glyph_layers = all_layers.sub_array (record.firstLayerIdx, + record.numLayers); + for (const LayerRecord layer : glyph_layers) + palettes->add (layer.colorIdx); + } + } + + void closure_forV1 (hb_set_t *glyphset, + hb_set_t *layer_indices, + hb_set_t *palette_indices) const + { + if (version != 1) return; + hb_set_t visited_glyphs; + + hb_colrv1_closure_context_t c (this, &visited_glyphs, layer_indices, palette_indices); + const BaseGlyphList &baseglyph_paintrecords = this+baseGlyphList; + + for (const BaseGlyphPaintRecord &baseglyph_paintrecord: baseglyph_paintrecords.iter ()) + { + unsigned gid = baseglyph_paintrecord.glyphId; + if (!glyphset->has (gid)) continue; + + const Paint &paint = &baseglyph_paintrecords+baseglyph_paintrecord.paint; + paint.dispatch (&c); + } + hb_set_union (glyphset, &visited_glyphs); + } + + const LayerList& get_layerList () const + { return (this+layerList); } + + const BaseGlyphList& get_baseglyphList () const + { return (this+baseGlyphList); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (this+baseGlyphsZ).sanitize (c, numBaseGlyphs) && + (this+layersZ).sanitize (c, numLayers) && + (version == 0 || + (version == 1 && + baseGlyphList.sanitize (c, this) && + layerList.sanitize (c, this) && + clipList.sanitize (c, this) && + varIdxMap.sanitize (c, this) && + varStore.sanitize (c, this)))); + } + + template + bool serialize_V0 (hb_serialize_context_t *c, + unsigned version, + BaseIterator base_it, + LayerIterator layer_it) + { + TRACE_SERIALIZE (this); + if (unlikely (base_it.len () != layer_it.len ())) + return_trace (false); + + this->version = version; + numLayers = 0; + numBaseGlyphs = base_it.len (); + if (numBaseGlyphs == 0) + { + baseGlyphsZ = 0; + layersZ = 0; + return_trace (true); + } + + c->push (); + for (const hb_item_type _ : + base_it.iter ()) + { + auto* record = c->embed (_); + if (unlikely (!record)) return_trace (false); + record->firstLayerIdx = numLayers; + numLayers += record->numLayers; + } + c->add_link (baseGlyphsZ, c->pop_pack ()); + + c->push (); + for (const hb_item_type& _ : + layer_it.iter ()) + _.as_array ().copy (c); + + c->add_link (layersZ, c->pop_pack ()); + + return_trace (true); + } + + const BaseGlyphRecord* get_base_glyph_record (hb_codepoint_t gid) const + { + const BaseGlyphRecord* record = &(this+baseGlyphsZ).bsearch (numBaseGlyphs, (unsigned int) gid); + if (record == &Null (BaseGlyphRecord) || + (record && (hb_codepoint_t) record->glyphId != gid)) + record = nullptr; + return record; + } + + const BaseGlyphPaintRecord* get_base_glyph_paintrecord (hb_codepoint_t gid) const + { + const BaseGlyphPaintRecord* record = &(this+baseGlyphList).bsearch ((unsigned) gid); + if ((record && (hb_codepoint_t) record->glyphId != gid)) + record = nullptr; + return record; + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_map_t &reverse_glyph_map = *c->plan->reverse_glyph_map; + const hb_set_t& glyphset = c->plan->_glyphset_colred; + + auto base_it = + + hb_range (c->plan->num_output_glyphs ()) + | hb_filter ([&](hb_codepoint_t new_gid) + { + hb_codepoint_t old_gid = reverse_glyph_map.get (new_gid); + if (glyphset.has (old_gid)) return true; + return false; + }) + | hb_map_retains_sorting ([&](hb_codepoint_t new_gid) + { + hb_codepoint_t old_gid = reverse_glyph_map.get (new_gid); + + const BaseGlyphRecord* old_record = get_base_glyph_record (old_gid); + if (unlikely (!old_record)) + return hb_pair_t (false, Null (BaseGlyphRecord)); + BaseGlyphRecord new_record = {}; + new_record.glyphId = new_gid; + new_record.numLayers = old_record->numLayers; + return hb_pair_t (true, new_record); + }) + | hb_filter (hb_first) + | hb_map_retains_sorting (hb_second) + ; + + auto layer_it = + + hb_range (c->plan->num_output_glyphs ()) + | hb_map (reverse_glyph_map) + | hb_filter (glyphset) + | hb_map_retains_sorting ([&](hb_codepoint_t old_gid) + { + const BaseGlyphRecord* old_record = get_base_glyph_record (old_gid); + hb_vector_t out_layers; + + if (unlikely (!old_record || + old_record->firstLayerIdx >= numLayers || + old_record->firstLayerIdx + old_record->numLayers > numLayers)) + return hb_pair_t> (false, out_layers); + + auto layers = (this+layersZ).as_array (numLayers).sub_array (old_record->firstLayerIdx, + old_record->numLayers); + out_layers.resize (layers.length); + for (unsigned int i = 0; i < layers.length; i++) { + out_layers[i] = layers[i]; + hb_codepoint_t new_gid = 0; + if (unlikely (!c->plan->new_gid_for_old_gid (out_layers[i].glyphId, &new_gid))) + return hb_pair_t> (false, out_layers); + out_layers[i].glyphId = new_gid; + out_layers[i].colorIdx = c->plan->colr_palettes.get (layers[i].colorIdx); + } + + return hb_pair_t> (true, out_layers); + }) + | hb_filter (hb_first) + | hb_map_retains_sorting (hb_second) + ; + + if (version == 0 && (!base_it || !layer_it)) + return_trace (false); + + COLR *colr_prime = c->serializer->start_embed (); + if (unlikely (!c->serializer->extend_min (colr_prime))) return_trace (false); + + if (version == 0) + return_trace (colr_prime->serialize_V0 (c->serializer, version, base_it, layer_it)); + + auto snap = c->serializer->snapshot (); + if (!c->serializer->allocate_size (5 * HBUINT32::static_size)) return_trace (false); + + VarStoreInstancer instancer (varStore ? &(this+varStore) : nullptr, + varIdxMap ? &(this+varIdxMap) : nullptr, + c->plan->normalized_coords.as_array ()); + + if (!colr_prime->baseGlyphList.serialize_subset (c, baseGlyphList, this, instancer)) + { + if (c->serializer->in_error ()) return_trace (false); + //no more COLRv1 glyphs: downgrade to version 0 + c->serializer->revert (snap); + return_trace (colr_prime->serialize_V0 (c->serializer, 0, base_it, layer_it)); + } + + if (!colr_prime->serialize_V0 (c->serializer, version, base_it, layer_it)) return_trace (false); + + colr_prime->layerList.serialize_subset (c, layerList, this, instancer); + colr_prime->clipList.serialize_subset (c, clipList, this, instancer); + if (!varStore || c->plan->all_axes_pinned) + return_trace (true); + + colr_prime->varIdxMap.serialize_copy (c->serializer, varIdxMap, this); + colr_prime->varStore.serialize_copy (c->serializer, varStore, this); + return_trace (true); + } + + const Paint *get_base_glyph_paint (hb_codepoint_t glyph) const + { + const BaseGlyphList &baseglyph_paintrecords = this+baseGlyphList; + const BaseGlyphPaintRecord* record = get_base_glyph_paintrecord (glyph); + if (record) + { + const Paint &paint = &baseglyph_paintrecords+record->paint; + return &paint; + } + else + return nullptr; + } + +#ifndef HB_NO_PAINT + bool + get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const + { + if (version != 1) + return false; + + VarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + + if (get_clip (glyph, extents, instancer)) + { + font->scale_glyph_extents (extents); + return true; + } + + auto *extents_funcs = hb_paint_extents_get_funcs (); + hb_paint_extents_context_t extents_data; + bool ret = paint_glyph (font, glyph, extents_funcs, &extents_data, 0, HB_COLOR(0,0,0,0)); + + hb_extents_t e = extents_data.get_extents (); + if (e.is_void ()) + { + extents->x_bearing = 0; + extents->y_bearing = 0; + extents->width = 0; + extents->height = 0; + } + else + { + extents->x_bearing = e.xmin; + extents->y_bearing = e.ymax; + extents->width = e.xmax - e.xmin; + extents->height = e.ymin - e.ymax; + } + + return ret; + } +#endif + + bool + has_paint_for_glyph (hb_codepoint_t glyph) const + { + if (version == 1) + { + const Paint *paint = get_base_glyph_paint (glyph); + + return paint != nullptr; + } + + return false; + } + + bool get_clip (hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + const VarStoreInstancer instancer) const + { + return (this+clipList).get_extents (glyph, + extents, + instancer); + } + +#ifndef HB_NO_PAINT + bool + paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, unsigned int palette_index, hb_color_t foreground, bool clip = true) const + { + VarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + hb_paint_context_t c (this, funcs, data, font, palette_index, foreground, instancer); + + if (version == 1) + { + const Paint *paint = get_base_glyph_paint (glyph); + if (paint) + { + // COLRv1 glyph + + VarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + + bool is_bounded = true; + if (clip) + { + hb_glyph_extents_t extents; + if (get_clip (glyph, &extents, instancer)) + { + font->scale_glyph_extents (&extents); + c.funcs->push_clip_rectangle (c.data, + extents.x_bearing, + extents.y_bearing + extents.height, + extents.x_bearing + extents.width, + extents.y_bearing); + } + else + { + auto *extents_funcs = hb_paint_extents_get_funcs (); + hb_paint_extents_context_t extents_data; + + paint_glyph (font, glyph, + extents_funcs, &extents_data, + palette_index, foreground, + false); + + hb_extents_t extents = extents_data.get_extents (); + is_bounded = extents_data.is_bounded (); + + c.funcs->push_clip_rectangle (c.data, + extents.xmin, + extents.ymin, + extents.xmax, + extents.ymax); + } + } + + c.funcs->push_root_transform (c.data, font); + + if (is_bounded) + c.recurse (*paint); + + c.funcs->pop_transform (c.data); + + if (clip) + c.funcs->pop_clip (c.data); + + return true; + } + } + + const BaseGlyphRecord *record = get_base_glyph_record (glyph); + if (record && ((hb_codepoint_t) record->glyphId == glyph)) + { + // COLRv0 glyph + for (const auto &r : (this+layersZ).as_array (numLayers) + .sub_array (record->firstLayerIdx, record->numLayers)) + { + hb_bool_t is_foreground; + hb_color_t color = c.get_color (r.colorIdx, 1., &is_foreground); + c.funcs->push_clip_glyph (c.data, r.glyphId, c.font); + c.funcs->color (c.data, is_foreground, color); + c.funcs->pop_clip (c.data); + } + + return true; + } + + return false; + } +#endif + + protected: + HBUINT16 version; /* Table version number (starts at 0). */ + HBUINT16 numBaseGlyphs; /* Number of Base Glyph Records. */ + NNOffset32To> + baseGlyphsZ; /* Offset to Base Glyph records. */ + NNOffset32To> + layersZ; /* Offset to Layer Records. */ + HBUINT16 numLayers; /* Number of Layer Records. */ + // Version-1 additions + Offset32To baseGlyphList; + Offset32To layerList; + Offset32To clipList; // Offset to ClipList table (may be NULL) + Offset32To varIdxMap; // Offset to DeltaSetIndexMap table (may be NULL) + Offset32To varStore; + public: + DEFINE_SIZE_MIN (14); +}; + +struct COLR_accelerator_t : COLR::accelerator_t { + COLR_accelerator_t (hb_face_t *face) : COLR::accelerator_t (face) {} +}; + +void +hb_paint_context_t::recurse (const Paint &paint) +{ + if (unlikely (depth_left <= 0 || edge_count <= 0)) return; + depth_left--; + edge_count--; + paint.dispatch (this); + depth_left++; +} + +void PaintColrLayers::paint_glyph (hb_paint_context_t *c) const +{ + const LayerList &paint_offset_lists = c->get_colr_table ()->get_layerList (); + for (unsigned i = firstLayerIndex; i < firstLayerIndex + numLayers; i++) + { + const Paint &paint = paint_offset_lists.get_paint (i); + c->funcs->push_group (c->data); + c->recurse (paint); + c->funcs->pop_group (c->data, HB_PAINT_COMPOSITE_MODE_SRC_OVER); + } +} + +void PaintColrGlyph::paint_glyph (hb_paint_context_t *c) const +{ + const COLR *colr_table = c->get_colr_table (); + const Paint *paint = colr_table->get_base_glyph_paint (gid); + + hb_glyph_extents_t extents = {0}; + bool has_clip_box = colr_table->get_clip (gid, &extents, c->instancer); + + if (has_clip_box) + c->funcs->push_clip_rectangle (c->data, + extents.x_bearing, + extents.y_bearing + extents.height, + extents.x_bearing + extents.width, + extents.y_bearing); + + if (paint) + c->recurse (*paint); + + if (has_clip_box) + c->funcs->pop_clip (c->data); +} + +} /* namespace OT */ + +#endif /* OT_COLOR_COLR_COLR_HH */ diff --git a/gfx/harfbuzz/src/OT/Color/COLR/colrv1-closure.hh b/gfx/harfbuzz/src/OT/Color/COLR/colrv1-closure.hh new file mode 100644 index 0000000000..705863d4ad --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/COLR/colrv1-closure.hh @@ -0,0 +1,107 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * Copyright © 2020 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + */ + +#ifndef OT_COLOR_COLR_COLRV1_CLOSURE_HH +#define OT_COLOR_COLR_COLRV1_CLOSURE_HH + +#include "../../../hb-open-type.hh" +#include "COLR.hh" + +/* + * COLR -- Color + * https://docs.microsoft.com/en-us/typography/opentype/spec/colr + */ +namespace OT { + +HB_INTERNAL void PaintColrLayers::closurev1 (hb_colrv1_closure_context_t* c) const +{ + c->add_layer_indices (firstLayerIndex, numLayers); + const LayerList &paint_offset_lists = c->get_colr_table ()->get_layerList (); + for (unsigned i = firstLayerIndex; i < firstLayerIndex + numLayers; i++) + { + const Paint &paint = std::addressof (paint_offset_lists) + paint_offset_lists[i]; + paint.dispatch (c); + } +} + +HB_INTERNAL void PaintGlyph::closurev1 (hb_colrv1_closure_context_t* c) const +{ + c->add_glyph (gid); + (this+paint).dispatch (c); +} + +HB_INTERNAL void PaintColrGlyph::closurev1 (hb_colrv1_closure_context_t* c) const +{ + const COLR *colr_table = c->get_colr_table (); + const BaseGlyphPaintRecord* baseglyph_paintrecord = colr_table->get_base_glyph_paintrecord (gid); + if (!baseglyph_paintrecord) return; + c->add_glyph (gid); + + const BaseGlyphList &baseglyph_list = colr_table->get_baseglyphList (); + (&baseglyph_list+baseglyph_paintrecord->paint).dispatch (c); +} + +template class Var> +HB_INTERNAL void PaintTransform::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintTranslate::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintScale::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintScaleAroundCenter::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintScaleUniform::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintScaleUniformAroundCenter::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintRotate::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintRotateAroundCenter::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintSkew::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintSkewAroundCenter::closurev1 (hb_colrv1_closure_context_t* c) const +{ (this+src).dispatch (c); } + +HB_INTERNAL void PaintComposite::closurev1 (hb_colrv1_closure_context_t* c) const +{ + (this+src).dispatch (c); + (this+backdrop).dispatch (c); +} + +} /* namespace OT */ + + +#endif /* OT_COLOR_COLR_COLRV1_CLOSURE_HH */ diff --git a/gfx/harfbuzz/src/OT/Color/CPAL/CPAL.hh b/gfx/harfbuzz/src/OT/Color/CPAL/CPAL.hh new file mode 100644 index 0000000000..c07716c1c9 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/CPAL/CPAL.hh @@ -0,0 +1,350 @@ +/* + * Copyright © 2016 Google, Inc. + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Sascha Brawer + */ + +#ifndef OT_COLOR_CPAL_CPAL_HH +#define OT_COLOR_CPAL_CPAL_HH + +#include "../../../hb-open-type.hh" +#include "../../../hb-ot-color.h" +#include "../../../hb-ot-name.h" + + +/* + * CPAL -- Color Palette + * https://docs.microsoft.com/en-us/typography/opentype/spec/cpal + */ +#define HB_OT_TAG_CPAL HB_TAG('C','P','A','L') + +namespace OT { + + +struct CPALV1Tail +{ + friend struct CPAL; + + private: + hb_ot_color_palette_flags_t get_palette_flags (const void *base, + unsigned int palette_index, + unsigned int palette_count) const + { + if (!paletteFlagsZ) return HB_OT_COLOR_PALETTE_FLAG_DEFAULT; + return (hb_ot_color_palette_flags_t) (uint32_t) + (base+paletteFlagsZ).as_array (palette_count)[palette_index]; + } + + hb_ot_name_id_t get_palette_name_id (const void *base, + unsigned int palette_index, + unsigned int palette_count) const + { + if (!paletteLabelsZ) return HB_OT_NAME_ID_INVALID; + return (base+paletteLabelsZ).as_array (palette_count)[palette_index]; + } + + hb_ot_name_id_t get_color_name_id (const void *base, + unsigned int color_index, + unsigned int color_count) const + { + if (!colorLabelsZ) return HB_OT_NAME_ID_INVALID; + return (base+colorLabelsZ).as_array (color_count)[color_index]; + } + + public: + void collect_name_ids (const void *base, + unsigned palette_count, + unsigned color_count, + const hb_map_t *color_index_map, + hb_set_t *nameids_to_retain /* OUT */) const + { + if (paletteLabelsZ) + { + + (base+paletteLabelsZ).as_array (palette_count) + | hb_sink (nameids_to_retain) + ; + } + + if (colorLabelsZ) + { + const hb_array_t colorLabels = (base+colorLabelsZ).as_array (color_count); + for (unsigned i = 0; i < color_count; i++) + { + if (!color_index_map->has (i)) continue; + nameids_to_retain->add (colorLabels[i]); + } + } + } + + bool serialize (hb_serialize_context_t *c, + unsigned palette_count, + unsigned color_count, + const void *base, + const hb_map_t *color_index_map) const + { + TRACE_SERIALIZE (this); + auto *out = c->allocate_size (static_size); + if (unlikely (!out)) return_trace (false); + + out->paletteFlagsZ = 0; + if (paletteFlagsZ) + out->paletteFlagsZ.serialize_copy (c, paletteFlagsZ, base, 0, hb_serialize_context_t::Head, palette_count); + + out->paletteLabelsZ = 0; + if (paletteLabelsZ) + out->paletteLabelsZ.serialize_copy (c, paletteLabelsZ, base, 0, hb_serialize_context_t::Head, palette_count); + + const hb_array_t colorLabels = (base+colorLabelsZ).as_array (color_count); + if (colorLabelsZ) + { + c->push (); + for (unsigned i = 0; i < color_count; i++) + { + if (!color_index_map->has (i)) continue; + if (!c->copy (colorLabels[i])) + { + c->pop_discard (); + return_trace (false); + } + } + c->add_link (out->colorLabelsZ, c->pop_pack ()); + } + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c, + const void *base, + unsigned int palette_count, + unsigned int color_count) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (!paletteFlagsZ || (base+paletteFlagsZ).sanitize (c, palette_count)) && + (!paletteLabelsZ || (base+paletteLabelsZ).sanitize (c, palette_count)) && + (!colorLabelsZ || (base+colorLabelsZ).sanitize (c, color_count))); + } + + protected: + // TODO(garretrieger): these offsets can hold nulls so we should not be using non-null offsets + // here. Currently they are needed since UnsizedArrayOf doesn't define null_size + NNOffset32To> + paletteFlagsZ; /* Offset from the beginning of CPAL table to + * the Palette Type Array. Set to 0 if no array + * is provided. */ + NNOffset32To> + paletteLabelsZ; /* Offset from the beginning of CPAL table to + * the palette labels array. Set to 0 if no + * array is provided. */ + NNOffset32To> + colorLabelsZ; /* Offset from the beginning of CPAL table to + * the color labels array. Set to 0 + * if no array is provided. */ + public: + DEFINE_SIZE_STATIC (12); +}; + +typedef HBUINT32 BGRAColor; + +struct CPAL +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_CPAL; + + bool has_data () const { return numPalettes; } + + unsigned int get_size () const + { return min_size + numPalettes * sizeof (colorRecordIndicesZ[0]); } + + unsigned int get_palette_count () const { return numPalettes; } + unsigned int get_color_count () const { return numColors; } + + hb_ot_color_palette_flags_t get_palette_flags (unsigned int palette_index) const + { return v1 ().get_palette_flags (this, palette_index, numPalettes); } + + hb_ot_name_id_t get_palette_name_id (unsigned int palette_index) const + { return v1 ().get_palette_name_id (this, palette_index, numPalettes); } + + hb_ot_name_id_t get_color_name_id (unsigned int color_index) const + { return v1 ().get_color_name_id (this, color_index, numColors); } + + unsigned int get_palette_colors (unsigned int palette_index, + unsigned int start_offset, + unsigned int *color_count, /* IN/OUT. May be NULL. */ + hb_color_t *colors /* OUT. May be NULL. */) const + { + if (unlikely (palette_index >= numPalettes)) + { + if (color_count) *color_count = 0; + return 0; + } + unsigned int start_index = colorRecordIndicesZ[palette_index]; + hb_array_t all_colors ((this+colorRecordsZ).arrayZ, numColorRecords); + hb_array_t palette_colors = all_colors.sub_array (start_index, + numColors); + if (color_count) + { + + palette_colors.sub_array (start_offset, color_count) + | hb_sink (hb_array (colors, *color_count)) + ; + } + return numColors; + } + + void collect_name_ids (const hb_map_t *color_index_map, + hb_set_t *nameids_to_retain /* OUT */) const + { + if (version == 1) + v1 ().collect_name_ids (this, numPalettes, numColors, color_index_map, nameids_to_retain); + } + + private: + const CPALV1Tail& v1 () const + { + if (version == 0) return Null (CPALV1Tail); + return StructAfter (*this); + } + + public: + bool serialize (hb_serialize_context_t *c, + const hb_array_t &color_record_indices, + const hb_array_t &color_records, + const hb_vector_t& first_color_index_for_layer, + const hb_map_t& first_color_to_layer_index, + const hb_set_t &retained_color_indices) const + { + TRACE_SERIALIZE (this); + + // TODO(grieger): limit total final size. + + for (const auto idx : color_record_indices) + { + hb_codepoint_t layer_index = first_color_to_layer_index[idx]; + + HBUINT16 new_idx; + new_idx = layer_index * retained_color_indices.get_population (); + if (!c->copy (new_idx)) return_trace (false); + } + + c->push (); + for (unsigned first_color_index : first_color_index_for_layer) + { + for (hb_codepoint_t color_index : retained_color_indices) + { + if (!c->copy (color_records[first_color_index + color_index])) + { + c->pop_discard (); + return_trace (false); + } + } + } + + c->add_link (colorRecordsZ, c->pop_pack ()); + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + if (!numPalettes) return_trace (false); + + const hb_map_t *color_index_map = &c->plan->colr_palettes; + if (color_index_map->is_empty ()) return_trace (false); + + hb_set_t retained_color_indices; + for (const auto _ : color_index_map->keys ()) + { + if (_ == 0xFFFF) continue; + retained_color_indices.add (_); + } + if (retained_color_indices.is_empty ()) return_trace (false); + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + + out->version = version; + out->numColors = retained_color_indices.get_population (); + out->numPalettes = numPalettes; + + hb_vector_t first_color_index_for_layer; + hb_map_t first_color_to_layer_index; + + const hb_array_t colorRecordIndices = colorRecordIndicesZ.as_array (numPalettes); + for (const auto first_color_record_idx : colorRecordIndices) + { + if (first_color_to_layer_index.has (first_color_record_idx)) continue; + + first_color_index_for_layer.push (first_color_record_idx); + first_color_to_layer_index.set (first_color_record_idx, + first_color_index_for_layer.length - 1); + } + + out->numColorRecords = first_color_index_for_layer.length + * retained_color_indices.get_population (); + + const hb_array_t color_records = (this+colorRecordsZ).as_array (numColorRecords); + if (!out->serialize (c->serializer, + colorRecordIndices, + color_records, + first_color_index_for_layer, + first_color_to_layer_index, + retained_color_indices)) + return_trace (false); + + if (version == 1) + return_trace (v1 ().serialize (c->serializer, numPalettes, numColors, this, color_index_map)); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (this+colorRecordsZ).sanitize (c, numColorRecords) && + colorRecordIndicesZ.sanitize (c, numPalettes) && + (version == 0 || v1 ().sanitize (c, this, numPalettes, numColors))); + } + + protected: + HBUINT16 version; /* Table version number */ + /* Version 0 */ + HBUINT16 numColors; /* Number of colors in each palette. */ + HBUINT16 numPalettes; /* Number of palettes in the table. */ + HBUINT16 numColorRecords; /* Total number of color records, combined for + * all palettes. */ + NNOffset32To> + colorRecordsZ; /* Offset from the beginning of CPAL table to + * the first ColorRecord. */ + UnsizedArrayOf + colorRecordIndicesZ; /* Index of each palette’s first color record in + * the combined color record array. */ +/*CPALV1Tail v1;*/ + public: + DEFINE_SIZE_ARRAY (12, colorRecordIndicesZ); +}; + +} /* namespace OT */ + + +#endif /* OT_COLOR_CPAL_CPAL_HH */ diff --git a/gfx/harfbuzz/src/OT/Color/sbix/sbix.hh b/gfx/harfbuzz/src/OT/Color/sbix/sbix.hh new file mode 100644 index 0000000000..46ad3fd58e --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/sbix/sbix.hh @@ -0,0 +1,452 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * Copyright © 2020 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Calder Kitagawa + */ + +#ifndef OT_COLOR_SBIX_SBIX_HH +#define OT_COLOR_SBIX_SBIX_HH + +#include "../../../hb-open-type.hh" +#include "../../../hb-paint.hh" + +/* + * sbix -- Standard Bitmap Graphics + * https://docs.microsoft.com/en-us/typography/opentype/spec/sbix + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6sbix.html + */ +#define HB_OT_TAG_sbix HB_TAG('s','b','i','x') + + +namespace OT { + + +struct SBIXGlyph +{ + SBIXGlyph* copy (hb_serialize_context_t *c, unsigned int data_length) const + { + TRACE_SERIALIZE (this); + SBIXGlyph* new_glyph = c->start_embed (); + if (unlikely (!new_glyph)) return_trace (nullptr); + if (unlikely (!c->extend_min (new_glyph))) return_trace (nullptr); + + new_glyph->xOffset = xOffset; + new_glyph->yOffset = yOffset; + new_glyph->graphicType = graphicType; + data.copy (c, data_length); + return_trace (new_glyph); + } + + HBINT16 xOffset; /* The horizontal (x-axis) offset from the left + * edge of the graphic to the glyph’s origin. + * That is, the x-coordinate of the point on the + * baseline at the left edge of the glyph. */ + HBINT16 yOffset; /* The vertical (y-axis) offset from the bottom + * edge of the graphic to the glyph’s origin. + * That is, the y-coordinate of the point on the + * baseline at the left edge of the glyph. */ + Tag graphicType; /* Indicates the format of the embedded graphic + * data: one of 'jpg ', 'png ' or 'tiff', or the + * special format 'dupe'. */ + UnsizedArrayOf + data; /* The actual embedded graphic data. The total + * length is inferred from sequential entries in + * the glyphDataOffsets array and the fixed size + * (8 bytes) of the preceding fields. */ + public: + DEFINE_SIZE_ARRAY (8, data); +}; + +struct SBIXStrike +{ + static unsigned int get_size (unsigned num_glyphs) + { return min_size + num_glyphs * HBUINT32::static_size; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + imageOffsetsZ.sanitize_shallow (c, c->get_num_glyphs () + 1)); + } + + hb_blob_t *get_glyph_blob (unsigned int glyph_id, + hb_blob_t *sbix_blob, + hb_tag_t file_type, + int *x_offset, + int *y_offset, + unsigned int num_glyphs, + unsigned int *strike_ppem) const + { + if (unlikely (!ppem)) return hb_blob_get_empty (); /* To get Null() object out of the way. */ + + unsigned int retry_count = 8; + unsigned int sbix_len = sbix_blob->length; + unsigned int strike_offset = (const char *) this - (const char *) sbix_blob->data; + assert (strike_offset < sbix_len); + + retry: + if (unlikely (glyph_id >= num_glyphs || + imageOffsetsZ[glyph_id + 1] <= imageOffsetsZ[glyph_id] || + imageOffsetsZ[glyph_id + 1] - imageOffsetsZ[glyph_id] <= SBIXGlyph::min_size || + (unsigned int) imageOffsetsZ[glyph_id + 1] > sbix_len - strike_offset)) + return hb_blob_get_empty (); + + unsigned int glyph_offset = strike_offset + (unsigned int) imageOffsetsZ[glyph_id] + SBIXGlyph::min_size; + unsigned int glyph_length = imageOffsetsZ[glyph_id + 1] - imageOffsetsZ[glyph_id] - SBIXGlyph::min_size; + + const SBIXGlyph *glyph = &(this+imageOffsetsZ[glyph_id]); + + if (glyph->graphicType == HB_TAG ('d','u','p','e')) + { + if (glyph_length >= 2) + { + glyph_id = *((HBUINT16 *) &glyph->data); + if (retry_count--) + goto retry; + } + return hb_blob_get_empty (); + } + + if (unlikely (file_type != glyph->graphicType)) + return hb_blob_get_empty (); + + if (strike_ppem) *strike_ppem = ppem; + if (x_offset) *x_offset = glyph->xOffset; + if (y_offset) *y_offset = glyph->yOffset; + return hb_blob_create_sub_blob (sbix_blob, glyph_offset, glyph_length); + } + + bool subset (hb_subset_context_t *c, unsigned int available_len) const + { + TRACE_SUBSET (this); + unsigned int num_output_glyphs = c->plan->num_output_glyphs (); + + auto* out = c->serializer->start_embed (); + if (unlikely (!out)) return_trace (false); + auto snap = c->serializer->snapshot (); + if (unlikely (!c->serializer->extend (out, num_output_glyphs + 1))) return_trace (false); + out->ppem = ppem; + out->resolution = resolution; + HBUINT32 head; + head = get_size (num_output_glyphs + 1); + + bool has_glyphs = false; + for (unsigned new_gid = 0; new_gid < num_output_glyphs; new_gid++) + { + hb_codepoint_t old_gid; + if (!c->plan->old_gid_for_new_gid (new_gid, &old_gid) || + unlikely (imageOffsetsZ[old_gid].is_null () || + imageOffsetsZ[old_gid + 1].is_null () || + imageOffsetsZ[old_gid + 1] <= imageOffsetsZ[old_gid] || + imageOffsetsZ[old_gid + 1] - imageOffsetsZ[old_gid] <= SBIXGlyph::min_size) || + (unsigned int) imageOffsetsZ[old_gid + 1] > available_len) + { + out->imageOffsetsZ[new_gid] = head; + continue; + } + has_glyphs = true; + unsigned int delta = imageOffsetsZ[old_gid + 1] - imageOffsetsZ[old_gid]; + unsigned int glyph_data_length = delta - SBIXGlyph::min_size; + if (!(this+imageOffsetsZ[old_gid]).copy (c->serializer, glyph_data_length)) + return_trace (false); + out->imageOffsetsZ[new_gid] = head; + head += delta; + } + if (has_glyphs) + out->imageOffsetsZ[num_output_glyphs] = head; + else + c->serializer->revert (snap); + return_trace (has_glyphs); + } + + public: + HBUINT16 ppem; /* The PPEM size for which this strike was designed. */ + HBUINT16 resolution; /* The device pixel density (in PPI) for which this + * strike was designed. (E.g., 96 PPI, 192 PPI.) */ + protected: + UnsizedArrayOf> + imageOffsetsZ; /* Offset from the beginning of the strike data header + * to bitmap data for an individual glyph ID. */ + public: + DEFINE_SIZE_ARRAY (4, imageOffsetsZ); +}; + +struct sbix +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_sbix; + + bool has_data () const { return version; } + + const SBIXStrike &get_strike (unsigned int i) const { return this+strikes[i]; } + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { + table = hb_sanitize_context_t ().reference_table (face); + num_glyphs = face->get_num_glyphs (); + } + ~accelerator_t () { table.destroy (); } + + bool has_data () const { return table->has_data (); } + + bool get_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + bool scale = true) const + { + /* We only support PNG right now, and following function checks type. */ + return get_png_extents (font, glyph, extents, scale); + } + + hb_blob_t *reference_png (hb_font_t *font, + hb_codepoint_t glyph_id, + int *x_offset, + int *y_offset, + unsigned int *available_ppem) const + { + return choose_strike (font).get_glyph_blob (glyph_id, table.get_blob (), + HB_TAG ('p','n','g',' '), + x_offset, y_offset, + num_glyphs, available_ppem); + } + + bool paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const + { + if (!has_data ()) + return false; + + int x_offset = 0, y_offset = 0; + unsigned int strike_ppem = 0; + hb_blob_t *blob = reference_png (font, glyph, &x_offset, &y_offset, &strike_ppem); + hb_glyph_extents_t extents; + hb_glyph_extents_t pixel_extents; + + if (blob == hb_blob_get_empty ()) + return false; + + if (!hb_font_get_glyph_extents (font, glyph, &extents)) + return false; + + if (unlikely (!get_extents (font, glyph, &pixel_extents, false))) + return false; + + bool ret = funcs->image (data, + blob, + pixel_extents.width, -pixel_extents.height, + HB_PAINT_IMAGE_FORMAT_PNG, + font->slant_xy, + &extents); + + hb_blob_destroy (blob); + return ret; + } + + private: + + const SBIXStrike &choose_strike (hb_font_t *font) const + { + unsigned count = table->strikes.len; + if (unlikely (!count)) + return Null (SBIXStrike); + + unsigned int requested_ppem = hb_max (font->x_ppem, font->y_ppem); + if (!requested_ppem) + requested_ppem = 1<<30; /* Choose largest strike. */ + /* TODO Add DPI sensitivity as well? */ + unsigned int best_i = 0; + unsigned int best_ppem = table->get_strike (0).ppem; + + for (unsigned int i = 1; i < count; i++) + { + unsigned int ppem = (table->get_strike (i)).ppem; + if ((requested_ppem <= ppem && ppem < best_ppem) || + (requested_ppem > best_ppem && ppem > best_ppem)) + { + best_i = i; + best_ppem = ppem; + } + } + + return table->get_strike (best_i); + } + + struct PNGHeader + { + HBUINT8 signature[8]; + struct + { + struct + { + HBUINT32 length; + Tag type; + } header; + HBUINT32 width; + HBUINT32 height; + HBUINT8 bitDepth; + HBUINT8 colorType; + HBUINT8 compressionMethod; + HBUINT8 filterMethod; + HBUINT8 interlaceMethod; + } IHDR; + + public: + DEFINE_SIZE_STATIC (29); + }; + + bool get_png_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + bool scale = true) const + { + /* Following code is safe to call even without data. + * But faster to short-circuit. */ + if (!has_data ()) + return false; + + int x_offset = 0, y_offset = 0; + unsigned int strike_ppem = 0; + hb_blob_t *blob = reference_png (font, glyph, &x_offset, &y_offset, &strike_ppem); + + const PNGHeader &png = *blob->as(); + + if (png.IHDR.height >= 65536 || png.IHDR.width >= 65536) + { + hb_blob_destroy (blob); + return false; + } + + extents->x_bearing = x_offset; + extents->y_bearing = png.IHDR.height + y_offset; + extents->width = png.IHDR.width; + extents->height = -1 * png.IHDR.height; + + /* Convert to font units. */ + if (strike_ppem && scale) + { + float scale = font->face->get_upem () / (float) strike_ppem; + extents->x_bearing = roundf (extents->x_bearing * scale); + extents->y_bearing = roundf (extents->y_bearing * scale); + extents->width = roundf (extents->width * scale); + extents->height = roundf (extents->height * scale); + } + + if (scale) + font->scale_glyph_extents (extents); + + hb_blob_destroy (blob); + + return strike_ppem; + } + + private: + hb_blob_ptr_t table; + + unsigned int num_glyphs; + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + version >= 1 && + strikes.sanitize (c, this))); + } + + bool + add_strike (hb_subset_context_t *c, unsigned i) const + { + if (strikes[i].is_null () || c->source_blob->length < (unsigned) strikes[i]) + return false; + + return (this+strikes[i]).subset (c, c->source_blob->length - (unsigned) strikes[i]); + } + + bool serialize_strike_offsets (hb_subset_context_t *c) const + { + TRACE_SERIALIZE (this); + + auto *out = c->serializer->start_embed> (); + if (unlikely (!out)) return_trace (false); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + hb_vector_t*> new_strikes; + hb_vector_t objidxs; + for (int i = strikes.len - 1; i >= 0; --i) + { + auto* o = out->serialize_append (c->serializer); + if (unlikely (!o)) return_trace (false); + *o = 0; + auto snap = c->serializer->snapshot (); + c->serializer->push (); + bool ret = add_strike (c, i); + if (!ret) + { + c->serializer->pop_discard (); + out->pop (); + c->serializer->revert (snap); + } + else + { + objidxs.push (c->serializer->pop_pack ()); + new_strikes.push (o); + } + } + for (unsigned int i = 0; i < new_strikes.length; ++i) + c->serializer->add_link (*new_strikes[i], objidxs[new_strikes.length - 1 - i]); + + return_trace (true); + } + + bool subset (hb_subset_context_t* c) const + { + TRACE_SUBSET (this); + + sbix *sbix_prime = c->serializer->start_embed (); + if (unlikely (!sbix_prime)) return_trace (false); + if (unlikely (!c->serializer->embed (this->version))) return_trace (false); + if (unlikely (!c->serializer->embed (this->flags))) return_trace (false); + + return_trace (serialize_strike_offsets (c)); + } + + protected: + HBUINT16 version; /* Table version number — set to 1 */ + HBUINT16 flags; /* Bit 0: Set to 1. Bit 1: Draw outlines. + * Bits 2 to 15: reserved (set to 0). */ + Array32OfOffset32To + strikes; /* Offsets from the beginning of the 'sbix' + * table to data for each individual bitmap strike. */ + public: + DEFINE_SIZE_ARRAY (8, strikes); +}; + +struct sbix_accelerator_t : sbix::accelerator_t { + sbix_accelerator_t (hb_face_t *face) : sbix::accelerator_t (face) {} +}; + + +} /* namespace OT */ + +#endif /* OT_COLOR_SBIX_SBIX_HH */ diff --git a/gfx/harfbuzz/src/OT/Color/svg/svg.hh b/gfx/harfbuzz/src/OT/Color/svg/svg.hh new file mode 100644 index 0000000000..c7d91b88ee --- /dev/null +++ b/gfx/harfbuzz/src/OT/Color/svg/svg.hh @@ -0,0 +1,151 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef OT_COLOR_SVG_SVG_HH +#define OT_COLOR_SVG_SVG_HH + +#include "../../../hb-open-type.hh" +#include "../../../hb-blob.hh" +#include "../../../hb-paint.hh" + +/* + * SVG -- SVG (Scalable Vector Graphics) + * https://docs.microsoft.com/en-us/typography/opentype/spec/svg + */ + +#define HB_OT_TAG_SVG HB_TAG('S','V','G',' ') + + +namespace OT { + + +struct SVGDocumentIndexEntry +{ + int cmp (hb_codepoint_t g) const + { return g < startGlyphID ? -1 : g > endGlyphID ? 1 : 0; } + + hb_blob_t *reference_blob (hb_blob_t *svg_blob, unsigned int index_offset) const + { + return hb_blob_create_sub_blob (svg_blob, + index_offset + (unsigned int) svgDoc, + svgDocLength); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + svgDoc.sanitize (c, base, svgDocLength)); + } + + protected: + HBUINT16 startGlyphID; /* The first glyph ID in the range described by + * this index entry. */ + HBUINT16 endGlyphID; /* The last glyph ID in the range described by + * this index entry. Must be >= startGlyphID. */ + NNOffset32To> + svgDoc; /* Offset from the beginning of the SVG Document Index + * to an SVG document. Must be non-zero. */ + HBUINT32 svgDocLength; /* Length of the SVG document. + * Must be non-zero. */ + public: + DEFINE_SIZE_STATIC (12); +}; + +struct SVG +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_SVG; + + bool has_data () const { return svgDocEntries; } + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { table = hb_sanitize_context_t ().reference_table (face); } + ~accelerator_t () { table.destroy (); } + + hb_blob_t *reference_blob_for_glyph (hb_codepoint_t glyph_id) const + { + return table->get_glyph_entry (glyph_id).reference_blob (table.get_blob (), + table->svgDocEntries); + } + + bool has_data () const { return table->has_data (); } + + bool paint_glyph (hb_font_t *font HB_UNUSED, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const + { + if (!has_data ()) + return false; + + hb_blob_t *blob = reference_blob_for_glyph (glyph); + + if (blob == hb_blob_get_empty ()) + return false; + + funcs->image (data, + blob, + 0, 0, + HB_PAINT_IMAGE_FORMAT_SVG, + font->slant_xy, + nullptr); + + hb_blob_destroy (blob); + return true; + } + + private: + hb_blob_ptr_t table; + public: + DEFINE_SIZE_STATIC (sizeof (hb_blob_ptr_t)); + }; + + const SVGDocumentIndexEntry &get_glyph_entry (hb_codepoint_t glyph_id) const + { return (this+svgDocEntries).bsearch (glyph_id); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (this+svgDocEntries).sanitize_shallow (c))); + } + + protected: + HBUINT16 version; /* Table version (starting at 0). */ + Offset32To> + svgDocEntries; /* Offset (relative to the start of the SVG table) to the + * SVG Documents Index. Must be non-zero. */ + /* Array of SVG Document Index Entries. */ + HBUINT32 reserved; /* Set to 0. */ + public: + DEFINE_SIZE_STATIC (10); +}; + +struct SVG_accelerator_t : SVG::accelerator_t { + SVG_accelerator_t (hb_face_t *face) : SVG::accelerator_t (face) {} +}; + +} /* namespace OT */ + + +#endif /* OT_COLOR_SVG_SVG_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/Common/Coverage.hh b/gfx/harfbuzz/src/OT/Layout/Common/Coverage.hh new file mode 100644 index 0000000000..9ca88f788a --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/Common/Coverage.hh @@ -0,0 +1,348 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod, Garret Rieger + */ + +#ifndef OT_LAYOUT_COMMON_COVERAGE_HH +#define OT_LAYOUT_COMMON_COVERAGE_HH + +#include "../types.hh" +#include "CoverageFormat1.hh" +#include "CoverageFormat2.hh" + +namespace OT { +namespace Layout { +namespace Common { + +template +static inline void Coverage_serialize (hb_serialize_context_t *c, + Iterator it); + +struct Coverage +{ + + protected: + union { + HBUINT16 format; /* Format identifier */ + CoverageFormat1_3 format1; + CoverageFormat2_4 format2; +#ifndef HB_NO_BEYOND_64K + CoverageFormat1_3format3; + CoverageFormat2_4format4; +#endif + } u; + public: + DEFINE_SIZE_UNION (2, format); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) + { + case 1: return_trace (u.format1.sanitize (c)); + case 2: return_trace (u.format2.sanitize (c)); +#ifndef HB_NO_BEYOND_64K + case 3: return_trace (u.format3.sanitize (c)); + case 4: return_trace (u.format4.sanitize (c)); +#endif + default:return_trace (true); + } + } + + /* Has interface. */ + unsigned operator [] (hb_codepoint_t k) const { return get (k); } + bool has (hb_codepoint_t k) const { return (*this)[k] != NOT_COVERED; } + /* Predicate. */ + bool operator () (hb_codepoint_t k) const { return has (k); } + + unsigned int get (hb_codepoint_t k) const { return get_coverage (k); } + unsigned int get_coverage (hb_codepoint_t glyph_id) const + { + switch (u.format) { + case 1: return u.format1.get_coverage (glyph_id); + case 2: return u.format2.get_coverage (glyph_id); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.get_coverage (glyph_id); + case 4: return u.format4.get_coverage (glyph_id); +#endif + default:return NOT_COVERED; + } + } + + unsigned get_population () const + { + switch (u.format) { + case 1: return u.format1.get_population (); + case 2: return u.format2.get_population (); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.get_population (); + case 4: return u.format4.get_population (); +#endif + default:return NOT_COVERED; + } + } + + template + bool serialize (hb_serialize_context_t *c, Iterator glyphs) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + + unsigned count = hb_len (glyphs); + unsigned num_ranges = 0; + hb_codepoint_t last = (hb_codepoint_t) -2; + hb_codepoint_t max = 0; + bool unsorted = false; + for (auto g: glyphs) + { + if (last != (hb_codepoint_t) -2 && g < last) + unsorted = true; + if (last + 1 != g) + num_ranges++; + last = g; + if (g > max) max = g; + } + u.format = !unsorted && count <= num_ranges * 3 ? 1 : 2; + +#ifndef HB_NO_BEYOND_64K + if (max > 0xFFFFu) + u.format += 2; + if (unlikely (max > 0xFFFFFFu)) +#else + if (unlikely (max > 0xFFFFu)) +#endif + { + c->check_success (false, HB_SERIALIZE_ERROR_INT_OVERFLOW); + return_trace (false); + } + + switch (u.format) + { + case 1: return_trace (u.format1.serialize (c, glyphs)); + case 2: return_trace (u.format2.serialize (c, glyphs)); +#ifndef HB_NO_BEYOND_64K + case 3: return_trace (u.format3.serialize (c, glyphs)); + case 4: return_trace (u.format4.serialize (c, glyphs)); +#endif + default:return_trace (false); + } + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto it = + + iter () + | hb_take (c->plan->source->get_num_glyphs ()) + | hb_map_retains_sorting (c->plan->glyph_map_gsub) + | hb_filter ([] (hb_codepoint_t glyph) { return glyph != HB_MAP_VALUE_INVALID; }) + ; + + // Cache the iterator result as it will be iterated multiple times + // by the serialize code below. + hb_sorted_vector_t glyphs (it); + Coverage_serialize (c->serializer, glyphs.iter ()); + return_trace (bool (glyphs)); + } + + bool intersects (const hb_set_t *glyphs) const + { + switch (u.format) + { + case 1: return u.format1.intersects (glyphs); + case 2: return u.format2.intersects (glyphs); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.intersects (glyphs); + case 4: return u.format4.intersects (glyphs); +#endif + default:return false; + } + } + bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const + { + switch (u.format) + { + case 1: return u.format1.intersects_coverage (glyphs, index); + case 2: return u.format2.intersects_coverage (glyphs, index); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.intersects_coverage (glyphs, index); + case 4: return u.format4.intersects_coverage (glyphs, index); +#endif + default:return false; + } + } + + /* Might return false if array looks unsorted. + * Used for faster rejection of corrupt data. */ + template + bool collect_coverage (set_t *glyphs) const + { + switch (u.format) + { + case 1: return u.format1.collect_coverage (glyphs); + case 2: return u.format2.collect_coverage (glyphs); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.collect_coverage (glyphs); + case 4: return u.format4.collect_coverage (glyphs); +#endif + default:return false; + } + } + + template + void intersect_set (const hb_set_t &glyphs, IterableOut&& intersect_glyphs) const + { + switch (u.format) + { + case 1: return u.format1.intersect_set (glyphs, intersect_glyphs); + case 2: return u.format2.intersect_set (glyphs, intersect_glyphs); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.intersect_set (glyphs, intersect_glyphs); + case 4: return u.format4.intersect_set (glyphs, intersect_glyphs); +#endif + default:return ; + } + } + + struct iter_t : hb_iter_with_fallback_t + { + static constexpr bool is_sorted_iterator = true; + iter_t (const Coverage &c_ = Null (Coverage)) + { + hb_memset (this, 0, sizeof (*this)); + format = c_.u.format; + switch (format) + { + case 1: u.format1.init (c_.u.format1); return; + case 2: u.format2.init (c_.u.format2); return; +#ifndef HB_NO_BEYOND_64K + case 3: u.format3.init (c_.u.format3); return; + case 4: u.format4.init (c_.u.format4); return; +#endif + default: return; + } + } + bool __more__ () const + { + switch (format) + { + case 1: return u.format1.__more__ (); + case 2: return u.format2.__more__ (); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.__more__ (); + case 4: return u.format4.__more__ (); +#endif + default:return false; + } + } + void __next__ () + { + switch (format) + { + case 1: u.format1.__next__ (); break; + case 2: u.format2.__next__ (); break; +#ifndef HB_NO_BEYOND_64K + case 3: u.format3.__next__ (); break; + case 4: u.format4.__next__ (); break; +#endif + default: break; + } + } + typedef hb_codepoint_t __item_t__; + __item_t__ __item__ () const { return get_glyph (); } + + hb_codepoint_t get_glyph () const + { + switch (format) + { + case 1: return u.format1.get_glyph (); + case 2: return u.format2.get_glyph (); +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3.get_glyph (); + case 4: return u.format4.get_glyph (); +#endif + default:return 0; + } + } + bool operator != (const iter_t& o) const + { + if (unlikely (format != o.format)) return true; + switch (format) + { + case 1: return u.format1 != o.u.format1; + case 2: return u.format2 != o.u.format2; +#ifndef HB_NO_BEYOND_64K + case 3: return u.format3 != o.u.format3; + case 4: return u.format4 != o.u.format4; +#endif + default:return false; + } + } + iter_t __end__ () const + { + iter_t it = {}; + it.format = format; + switch (format) + { + case 1: it.u.format1 = u.format1.__end__ (); break; + case 2: it.u.format2 = u.format2.__end__ (); break; +#ifndef HB_NO_BEYOND_64K + case 3: it.u.format3 = u.format3.__end__ (); break; + case 4: it.u.format4 = u.format4.__end__ (); break; +#endif + default: break; + } + return it; + } + + private: + unsigned int format; + union { +#ifndef HB_NO_BEYOND_64K + CoverageFormat2_4::iter_t format4; /* Put this one first since it's larger; helps shut up compiler. */ + CoverageFormat1_3::iter_t format3; +#endif + CoverageFormat2_4::iter_t format2; /* Put this one first since it's larger; helps shut up compiler. */ + CoverageFormat1_3::iter_t format1; + } u; + }; + iter_t iter () const { return iter_t (*this); } +}; + +template +static inline void +Coverage_serialize (hb_serialize_context_t *c, + Iterator it) +{ c->start_embed ()->serialize (c, it); } + +} +} +} + +#endif // #ifndef OT_LAYOUT_COMMON_COVERAGE_HH diff --git a/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat1.hh b/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat1.hh new file mode 100644 index 0000000000..5d68e3d15e --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat1.hh @@ -0,0 +1,133 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod, Garret Rieger + */ + + +#ifndef OT_LAYOUT_COMMON_COVERAGEFORMAT1_HH +#define OT_LAYOUT_COMMON_COVERAGEFORMAT1_HH + +namespace OT { +namespace Layout { +namespace Common { + +#define NOT_COVERED ((unsigned int) -1) + +template +struct CoverageFormat1_3 +{ + friend struct Coverage; + + protected: + HBUINT16 coverageFormat; /* Format identifier--format = 1 */ + SortedArray16Of + glyphArray; /* Array of GlyphIDs--in numerical order */ + public: + DEFINE_SIZE_ARRAY (4, glyphArray); + + private: + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (glyphArray.sanitize (c)); + } + + unsigned int get_coverage (hb_codepoint_t glyph_id) const + { + unsigned int i; + glyphArray.bfind (glyph_id, &i, HB_NOT_FOUND_STORE, NOT_COVERED); + return i; + } + + unsigned get_population () const + { + return glyphArray.len; + } + + template + bool serialize (hb_serialize_context_t *c, Iterator glyphs) + { + TRACE_SERIALIZE (this); + return_trace (glyphArray.serialize (c, glyphs)); + } + + bool intersects (const hb_set_t *glyphs) const + { + if (glyphArray.len > glyphs->get_population () * hb_bit_storage ((unsigned) glyphArray.len) / 2) + { + for (hb_codepoint_t g = HB_SET_VALUE_INVALID; glyphs->next (&g);) + if (get_coverage (g) != NOT_COVERED) + return true; + return false; + } + + for (const auto& g : glyphArray.as_array ()) + if (glyphs->has (g)) + return true; + return false; + } + bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const + { return glyphs->has (glyphArray[index]); } + + template + void intersect_set (const hb_set_t &glyphs, IterableOut&& intersect_glyphs) const + { + unsigned count = glyphArray.len; + for (unsigned i = 0; i < count; i++) + if (glyphs.has (glyphArray[i])) + intersect_glyphs << glyphArray[i]; + } + + template + bool collect_coverage (set_t *glyphs) const + { return glyphs->add_sorted_array (glyphArray.as_array ()); } + + public: + /* Older compilers need this to be public. */ + struct iter_t + { + void init (const struct CoverageFormat1_3 &c_) { c = &c_; i = 0; } + bool __more__ () const { return i < c->glyphArray.len; } + void __next__ () { i++; } + hb_codepoint_t get_glyph () const { return c->glyphArray[i]; } + bool operator != (const iter_t& o) const + { return i != o.i; } + iter_t __end__ () const { iter_t it; it.init (*c); it.i = c->glyphArray.len; return it; } + + private: + const struct CoverageFormat1_3 *c; + unsigned int i; + }; + private: +}; + +} +} +} + +#endif // #ifndef OT_LAYOUT_COMMON_COVERAGEFORMAT1_HH diff --git a/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat2.hh b/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat2.hh new file mode 100644 index 0000000000..fa501d659d --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/Common/CoverageFormat2.hh @@ -0,0 +1,239 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod, Garret Rieger + */ + +#ifndef OT_LAYOUT_COMMON_COVERAGEFORMAT2_HH +#define OT_LAYOUT_COMMON_COVERAGEFORMAT2_HH + +#include "RangeRecord.hh" + +namespace OT { +namespace Layout { +namespace Common { + +template +struct CoverageFormat2_4 +{ + friend struct Coverage; + + protected: + HBUINT16 coverageFormat; /* Format identifier--format = 2 */ + SortedArray16Of> + rangeRecord; /* Array of glyph ranges--ordered by + * Start GlyphID. rangeCount entries + * long */ + public: + DEFINE_SIZE_ARRAY (4, rangeRecord); + + private: + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (rangeRecord.sanitize (c)); + } + + unsigned int get_coverage (hb_codepoint_t glyph_id) const + { + const RangeRecord &range = rangeRecord.bsearch (glyph_id); + return likely (range.first <= range.last) + ? (unsigned int) range.value + (glyph_id - range.first) + : NOT_COVERED; + } + + unsigned get_population () const + { + typename Types::large_int ret = 0; + for (const auto &r : rangeRecord) + ret += r.get_population (); + return ret > UINT_MAX ? UINT_MAX : (unsigned) ret; + } + + template + bool serialize (hb_serialize_context_t *c, Iterator glyphs) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + + unsigned num_ranges = 0; + hb_codepoint_t last = (hb_codepoint_t) -2; + for (auto g: glyphs) + { + if (last + 1 != g) + num_ranges++; + last = g; + } + + if (unlikely (!rangeRecord.serialize (c, num_ranges))) return_trace (false); + if (!num_ranges) return_trace (true); + + unsigned count = 0; + unsigned range = (unsigned) -1; + last = (hb_codepoint_t) -2; + unsigned unsorted = false; + for (auto g: glyphs) + { + if (last + 1 != g) + { + if (unlikely (last != (hb_codepoint_t) -2 && last + 1 > g)) + unsorted = true; + + range++; + rangeRecord.arrayZ[range].first = g; + rangeRecord.arrayZ[range].value = count; + } + rangeRecord.arrayZ[range].last = g; + last = g; + count++; + } + + if (unlikely (unsorted)) + rangeRecord.as_array ().qsort (RangeRecord::cmp_range); + + return_trace (true); + } + + bool intersects (const hb_set_t *glyphs) const + { + if (rangeRecord.len > glyphs->get_population () * hb_bit_storage ((unsigned) rangeRecord.len) / 2) + { + for (hb_codepoint_t g = HB_SET_VALUE_INVALID; glyphs->next (&g);) + if (get_coverage (g) != NOT_COVERED) + return true; + return false; + } + + return hb_any (+ hb_iter (rangeRecord) + | hb_map ([glyphs] (const RangeRecord &range) { return range.intersects (*glyphs); })); + } + bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const + { + auto *range = rangeRecord.as_array ().bsearch (index); + if (range) + return range->intersects (*glyphs); + return false; + } + + template + void intersect_set (const hb_set_t &glyphs, IterableOut&& intersect_glyphs) const + { + /* Break out of loop for overlapping, broken, tables, + * to avoid fuzzer timouts. */ + hb_codepoint_t last = 0; + for (const auto& range : rangeRecord) + { + if (unlikely (range.first < last)) + break; + last = range.last; + for (hb_codepoint_t g = range.first - 1; + glyphs.next (&g) && g <= last;) + intersect_glyphs << g; + } + } + + template + bool collect_coverage (set_t *glyphs) const + { + for (const auto& range: rangeRecord) + if (unlikely (!range.collect_coverage (glyphs))) + return false; + return true; + } + + public: + /* Older compilers need this to be public. */ + struct iter_t + { + void init (const CoverageFormat2_4 &c_) + { + c = &c_; + coverage = 0; + i = 0; + j = c->rangeRecord.len ? c->rangeRecord[0].first : 0; + if (unlikely (c->rangeRecord[0].first > c->rangeRecord[0].last)) + { + /* Broken table. Skip. */ + i = c->rangeRecord.len; + j = 0; + } + } + bool __more__ () const { return i < c->rangeRecord.len; } + void __next__ () + { + if (j >= c->rangeRecord[i].last) + { + i++; + if (__more__ ()) + { + unsigned int old = coverage; + j = c->rangeRecord.arrayZ[i].first; + coverage = c->rangeRecord.arrayZ[i].value; + if (unlikely (coverage != old + 1)) + { + /* Broken table. Skip. Important to avoid DoS. + * Also, our callers depend on coverage being + * consecutive and monotonically increasing, + * ie. iota(). */ + i = c->rangeRecord.len; + j = 0; + return; + } + } + else + j = 0; + return; + } + coverage++; + j++; + } + hb_codepoint_t get_glyph () const { return j; } + bool operator != (const iter_t& o) const + { return i != o.i || j != o.j; } + iter_t __end__ () const + { + iter_t it; + it.init (*c); + it.i = c->rangeRecord.len; + it.j = 0; + return it; + } + + private: + const struct CoverageFormat2_4 *c; + unsigned int i, coverage; + hb_codepoint_t j; + }; + private: +}; + +} +} +} + +#endif // #ifndef OT_LAYOUT_COMMON_COVERAGEFORMAT2_HH diff --git a/gfx/harfbuzz/src/OT/Layout/Common/RangeRecord.hh b/gfx/harfbuzz/src/OT/Layout/Common/RangeRecord.hh new file mode 100644 index 0000000000..85aacace9a --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/Common/RangeRecord.hh @@ -0,0 +1,97 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod, Garret Rieger + */ + +#ifndef OT_LAYOUT_COMMON_RANGERECORD_HH +#define OT_LAYOUT_COMMON_RANGERECORD_HH + +namespace OT { +namespace Layout { +namespace Common { + +template +struct RangeRecord +{ + typename Types::HBGlyphID first; /* First GlyphID in the range */ + typename Types::HBGlyphID last; /* Last GlyphID in the range */ + HBUINT16 value; /* Value */ + + DEFINE_SIZE_STATIC (2 + 2 * Types::size); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + int cmp (hb_codepoint_t g) const + { return g < first ? -1 : g <= last ? 0 : +1; } + + HB_INTERNAL static int cmp_range (const void *pa, const void *pb) { + const RangeRecord *a = (const RangeRecord *) pa; + const RangeRecord *b = (const RangeRecord *) pb; + if (a->first < b->first) return -1; + if (a->first > b->first) return +1; + if (a->last < b->last) return -1; + if (a->last > b->last) return +1; + if (a->value < b->value) return -1; + if (a->value > b->value) return +1; + return 0; + } + + unsigned get_population () const + { + if (unlikely (last < first)) return 0; + return (last - first + 1); + } + + bool intersects (const hb_set_t &glyphs) const + { return glyphs.intersects (first, last); } + + template + bool collect_coverage (set_t *glyphs) const + { return glyphs->add_range (first, last); } +}; + +} +} +} + +// TODO(garretrieger): This was previously implemented using +// DECLARE_NULL_NAMESPACE_BYTES_TEMPLATE1 (OT, RangeRecord, 9); +// but that only works when there is only a single namespace level. +// The macro should probably be fixed so it can work in this situation. +extern HB_INTERNAL const unsigned char _hb_Null_OT_RangeRecord[9]; +template +struct Null> { + static OT::Layout::Common::RangeRecord const & get_null () { + return *reinterpret_cast *> (_hb_Null_OT_RangeRecord); + } +}; + + +#endif // #ifndef OT_LAYOUT_COMMON_RANGERECORD_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GDEF/GDEF.hh b/gfx/harfbuzz/src/OT/Layout/GDEF/GDEF.hh new file mode 100644 index 0000000000..c1ff796199 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GDEF/GDEF.hh @@ -0,0 +1,942 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef OT_LAYOUT_GDEF_GDEF_HH +#define OT_LAYOUT_GDEF_GDEF_HH + +#include "../../../hb-ot-layout-common.hh" + +#include "../../../hb-font.hh" +#include "../../../hb-cache.hh" + + +namespace OT { + + +/* + * Attachment List Table + */ + +/* Array of contour point indices--in increasing numerical order */ +struct AttachPoint : Array16Of +{ + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out)) return_trace (false); + + return_trace (out->serialize (c->serializer, + iter ())); + } +}; + +struct AttachList +{ + unsigned int get_attach_points (hb_codepoint_t glyph_id, + unsigned int start_offset, + unsigned int *point_count /* IN/OUT */, + unsigned int *point_array /* OUT */) const + { + unsigned int index = (this+coverage).get_coverage (glyph_id); + if (index == NOT_COVERED) + { + if (point_count) + *point_count = 0; + return 0; + } + + const AttachPoint &points = this+attachPoint[index]; + + if (point_count) + { + + points.as_array ().sub_array (start_offset, point_count) + | hb_sink (hb_array (point_array, *point_count)) + ; + } + + return points.len; + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + hb_sorted_vector_t new_coverage; + + hb_zip (this+coverage, attachPoint) + | hb_filter (glyphset, hb_first) + | hb_filter (subset_offset_array (c, out->attachPoint, this), hb_second) + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + out->coverage.serialize_serialize (c->serializer, new_coverage.iter ()); + return_trace (bool (new_coverage)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && attachPoint.sanitize (c, this)); + } + + protected: + Offset16To + coverage; /* Offset to Coverage table -- from + * beginning of AttachList table */ + Array16OfOffset16To + attachPoint; /* Array of AttachPoint tables + * in Coverage Index order */ + public: + DEFINE_SIZE_ARRAY (4, attachPoint); +}; + +/* + * Ligature Caret Table + */ + +struct CaretValueFormat1 +{ + friend struct CaretValue; + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + return_trace (true); + } + + private: + hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction) const + { + return HB_DIRECTION_IS_HORIZONTAL (direction) ? font->em_scale_x (coordinate) : font->em_scale_y (coordinate); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 caretValueFormat; /* Format identifier--format = 1 */ + FWORD coordinate; /* X or Y value, in design units */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct CaretValueFormat2 +{ + friend struct CaretValue; + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + return_trace (true); + } + + private: + hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction, hb_codepoint_t glyph_id) const + { + hb_position_t x, y; + font->get_glyph_contour_point_for_origin (glyph_id, caretValuePoint, direction, &x, &y); + return HB_DIRECTION_IS_HORIZONTAL (direction) ? x : y; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 caretValueFormat; /* Format identifier--format = 2 */ + HBUINT16 caretValuePoint; /* Contour point index on glyph */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct CaretValueFormat3 +{ + friend struct CaretValue; + + hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction, + const VariationStore &var_store) const + { + return HB_DIRECTION_IS_HORIZONTAL (direction) ? + font->em_scale_x (coordinate) + (this+deviceTable).get_x_delta (font, var_store) : + font->em_scale_y (coordinate) + (this+deviceTable).get_y_delta (font, var_store); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out)) return_trace (false); + if (!c->serializer->embed (caretValueFormat)) return_trace (false); + if (!c->serializer->embed (coordinate)) return_trace (false); + + unsigned varidx = (this+deviceTable).get_variation_index (); + if (c->plan->layout_variation_idx_delta_map.has (varidx)) + { + int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (varidx)); + if (delta != 0) + { + if (!c->serializer->check_assign (out->coordinate, coordinate + delta, HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + } + } + + if (c->plan->all_axes_pinned) + return_trace (c->serializer->check_assign (out->caretValueFormat, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW)); + + if (!c->serializer->embed (deviceTable)) + return_trace (false); + + return_trace (out->deviceTable.serialize_copy (c->serializer, deviceTable, this, c->serializer->to_bias (out), + hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map)); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { (this+deviceTable).collect_variation_indices (c); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && deviceTable.sanitize (c, this)); + } + + protected: + HBUINT16 caretValueFormat; /* Format identifier--format = 3 */ + FWORD coordinate; /* X or Y value, in design units */ + Offset16To + deviceTable; /* Offset to Device table for X or Y + * value--from beginning of CaretValue + * table */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct CaretValue +{ + hb_position_t get_caret_value (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t glyph_id, + const VariationStore &var_store) const + { + switch (u.format) { + case 1: return u.format1.get_caret_value (font, direction); + case 2: return u.format2.get_caret_value (font, direction, glyph_id); + case 3: return u.format3.get_caret_value (font, direction, var_store); + default:return 0; + } + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); + case 3: return_trace (c->dispatch (u.format3, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + switch (u.format) { + case 1: + case 2: + return; + case 3: + u.format3.collect_variation_indices (c); + return; + default: return; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 1: return_trace (u.format1.sanitize (c)); + case 2: return_trace (u.format2.sanitize (c)); + case 3: return_trace (u.format3.sanitize (c)); + default:return_trace (true); + } + } + + protected: + union { + HBUINT16 format; /* Format identifier */ + CaretValueFormat1 format1; + CaretValueFormat2 format2; + CaretValueFormat3 format3; + } u; + public: + DEFINE_SIZE_UNION (2, format); +}; + +struct LigGlyph +{ + unsigned get_lig_carets (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t glyph_id, + const VariationStore &var_store, + unsigned start_offset, + unsigned *caret_count /* IN/OUT */, + hb_position_t *caret_array /* OUT */) const + { + if (caret_count) + { + + carets.as_array ().sub_array (start_offset, caret_count) + | hb_map (hb_add (this)) + | hb_map ([&] (const CaretValue &value) { return value.get_caret_value (font, direction, glyph_id, var_store); }) + | hb_sink (hb_array (caret_array, *caret_count)) + ; + } + + return carets.len; + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + + hb_iter (carets) + | hb_apply (subset_offset_array (c, out->carets, this)) + ; + + return_trace (bool (out->carets)); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + for (const Offset16To& offset : carets.iter ()) + (this+offset).collect_variation_indices (c); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (carets.sanitize (c, this)); + } + + protected: + Array16OfOffset16To + carets; /* Offset array of CaretValue tables + * --from beginning of LigGlyph table + * --in increasing coordinate order */ + public: + DEFINE_SIZE_ARRAY (2, carets); +}; + +struct LigCaretList +{ + unsigned int get_lig_carets (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t glyph_id, + const VariationStore &var_store, + unsigned int start_offset, + unsigned int *caret_count /* IN/OUT */, + hb_position_t *caret_array /* OUT */) const + { + unsigned int index = (this+coverage).get_coverage (glyph_id); + if (index == NOT_COVERED) + { + if (caret_count) + *caret_count = 0; + return 0; + } + const LigGlyph &lig_glyph = this+ligGlyph[index]; + return lig_glyph.get_lig_carets (font, direction, glyph_id, var_store, start_offset, caret_count, caret_array); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + hb_sorted_vector_t new_coverage; + + hb_zip (this+coverage, ligGlyph) + | hb_filter (glyphset, hb_first) + | hb_filter (subset_offset_array (c, out->ligGlyph, this), hb_second) + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + out->coverage.serialize_serialize (c->serializer, new_coverage.iter ()); + return_trace (bool (new_coverage)); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + + hb_zip (this+coverage, ligGlyph) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const LigGlyph& _) { _.collect_variation_indices (c); }) + ; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && ligGlyph.sanitize (c, this)); + } + + protected: + Offset16To + coverage; /* Offset to Coverage table--from + * beginning of LigCaretList table */ + Array16OfOffset16To + ligGlyph; /* Array of LigGlyph tables + * in Coverage Index order */ + public: + DEFINE_SIZE_ARRAY (4, ligGlyph); +}; + + +struct MarkGlyphSetsFormat1 +{ + bool covers (unsigned int set_index, hb_codepoint_t glyph_id) const + { return (this+coverage[set_index]).get_coverage (glyph_id) != NOT_COVERED; } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + bool ret = true; + for (const Offset32To& offset : coverage.iter ()) + { + auto *o = out->coverage.serialize_append (c->serializer); + if (unlikely (!o)) + { + ret = false; + break; + } + + //not using o->serialize_subset (c, offset, this, out) here because + //OTS doesn't allow null offset. + //See issue: https://github.com/khaledhosny/ots/issues/172 + c->serializer->push (); + c->dispatch (this+offset); + c->serializer->add_link (*o, c->serializer->pop_pack ()); + } + + return_trace (ret && out->coverage.len); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + Array16Of> + coverage; /* Array of long offsets to mark set + * coverage tables */ + public: + DEFINE_SIZE_ARRAY (4, coverage); +}; + +struct MarkGlyphSets +{ + bool covers (unsigned int set_index, hb_codepoint_t glyph_id) const + { + switch (u.format) { + case 1: return u.format1.covers (set_index, glyph_id); + default:return false; + } + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + switch (u.format) { + case 1: return_trace (u.format1.subset (c)); + default:return_trace (false); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 1: return_trace (u.format1.sanitize (c)); + default:return_trace (true); + } + } + + protected: + union { + HBUINT16 format; /* Format identifier */ + MarkGlyphSetsFormat1 format1; + } u; + public: + DEFINE_SIZE_UNION (2, format); +}; + + +/* + * GDEF -- Glyph Definition + * https://docs.microsoft.com/en-us/typography/opentype/spec/gdef + */ + + +template +struct GDEFVersion1_2 +{ + friend struct GDEF; + + protected: + FixedVersion<>version; /* Version of the GDEF table--currently + * 0x00010003u */ + typename Types::template OffsetTo + glyphClassDef; /* Offset to class definition table + * for glyph type--from beginning of + * GDEF header (may be Null) */ + typename Types::template OffsetTo + attachList; /* Offset to list of glyphs with + * attachment points--from beginning + * of GDEF header (may be Null) */ + typename Types::template OffsetTo + ligCaretList; /* Offset to list of positioning points + * for ligature carets--from beginning + * of GDEF header (may be Null) */ + typename Types::template OffsetTo + markAttachClassDef; /* Offset to class definition table for + * mark attachment type--from beginning + * of GDEF header (may be Null) */ + typename Types::template OffsetTo + markGlyphSetsDef; /* Offset to the table of mark set + * definitions--from beginning of GDEF + * header (may be NULL). Introduced + * in version 0x00010002. */ + Offset32To + varStore; /* Offset to the table of Item Variation + * Store--from beginning of GDEF + * header (may be NULL). Introduced + * in version 0x00010003. */ + public: + DEFINE_SIZE_MIN (4 + 4 * Types::size); + + unsigned int get_size () const + { + return min_size + + (version.to_int () >= 0x00010002u ? markGlyphSetsDef.static_size : 0) + + (version.to_int () >= 0x00010003u ? varStore.static_size : 0); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (version.sanitize (c) && + glyphClassDef.sanitize (c, this) && + attachList.sanitize (c, this) && + ligCaretList.sanitize (c, this) && + markAttachClassDef.sanitize (c, this) && + (version.to_int () < 0x00010002u || markGlyphSetsDef.sanitize (c, this)) && + (version.to_int () < 0x00010003u || varStore.sanitize (c, this))); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + bool subset_glyphclassdef = out->glyphClassDef.serialize_subset (c, glyphClassDef, this, nullptr, false, true); + bool subset_attachlist = out->attachList.serialize_subset (c, attachList, this); + bool subset_ligcaretlist = out->ligCaretList.serialize_subset (c, ligCaretList, this); + bool subset_markattachclassdef = out->markAttachClassDef.serialize_subset (c, markAttachClassDef, this, nullptr, false, true); + + bool subset_markglyphsetsdef = false; + if (version.to_int () >= 0x00010002u) + { + subset_markglyphsetsdef = out->markGlyphSetsDef.serialize_subset (c, markGlyphSetsDef, this); + } + + bool subset_varstore = false; + if (version.to_int () >= 0x00010003u) + { + if (c->plan->all_axes_pinned) + out->varStore = 0; + else + subset_varstore = out->varStore.serialize_subset (c, varStore, this, c->plan->gdef_varstore_inner_maps.as_array ()); + } + + if (subset_varstore) + { + out->version.minor = 3; + } else if (subset_markglyphsetsdef) { + out->version.minor = 2; + } else { + out->version.minor = 0; + } + + return_trace (subset_glyphclassdef || subset_attachlist || + subset_ligcaretlist || subset_markattachclassdef || + (out->version.to_int () >= 0x00010002u && subset_markglyphsetsdef) || + (out->version.to_int () >= 0x00010003u && subset_varstore)); + } +}; + +struct GDEF +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_GDEF; + + enum GlyphClasses { + UnclassifiedGlyph = 0, + BaseGlyph = 1, + LigatureGlyph = 2, + MarkGlyph = 3, + ComponentGlyph = 4 + }; + + unsigned int get_size () const + { + switch (u.version.major) { + case 1: return u.version1.get_size (); +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.get_size (); +#endif + default: return u.version.static_size; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.version.sanitize (c))) return_trace (false); + switch (u.version.major) { + case 1: return_trace (u.version1.sanitize (c)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (u.version2.sanitize (c)); +#endif + default: return_trace (true); + } + } + + bool subset (hb_subset_context_t *c) const + { + switch (u.version.major) { + case 1: return u.version1.subset (c); +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.subset (c); +#endif + default: return false; + } + } + + bool has_glyph_classes () const + { + switch (u.version.major) { + case 1: return u.version1.glyphClassDef != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.glyphClassDef != 0; +#endif + default: return false; + } + } + const ClassDef &get_glyph_class_def () const + { + switch (u.version.major) { + case 1: return this+u.version1.glyphClassDef; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.glyphClassDef; +#endif + default: return Null(ClassDef); + } + } + bool has_attach_list () const + { + switch (u.version.major) { + case 1: return u.version1.attachList != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.attachList != 0; +#endif + default: return false; + } + } + const AttachList &get_attach_list () const + { + switch (u.version.major) { + case 1: return this+u.version1.attachList; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.attachList; +#endif + default: return Null(AttachList); + } + } + bool has_lig_carets () const + { + switch (u.version.major) { + case 1: return u.version1.ligCaretList != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.ligCaretList != 0; +#endif + default: return false; + } + } + const LigCaretList &get_lig_caret_list () const + { + switch (u.version.major) { + case 1: return this+u.version1.ligCaretList; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.ligCaretList; +#endif + default: return Null(LigCaretList); + } + } + bool has_mark_attachment_types () const + { + switch (u.version.major) { + case 1: return u.version1.markAttachClassDef != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.markAttachClassDef != 0; +#endif + default: return false; + } + } + const ClassDef &get_mark_attach_class_def () const + { + switch (u.version.major) { + case 1: return this+u.version1.markAttachClassDef; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.markAttachClassDef; +#endif + default: return Null(ClassDef); + } + } + bool has_mark_glyph_sets () const + { + switch (u.version.major) { + case 1: return u.version.to_int () >= 0x00010002u && u.version1.markGlyphSetsDef != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.markGlyphSetsDef != 0; +#endif + default: return false; + } + } + const MarkGlyphSets &get_mark_glyph_sets () const + { + switch (u.version.major) { + case 1: return u.version.to_int () >= 0x00010002u ? this+u.version1.markGlyphSetsDef : Null(MarkGlyphSets); +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.markGlyphSetsDef; +#endif + default: return Null(MarkGlyphSets); + } + } + bool has_var_store () const + { + switch (u.version.major) { + case 1: return u.version.to_int () >= 0x00010003u && u.version1.varStore != 0; +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.varStore != 0; +#endif + default: return false; + } + } + const VariationStore &get_var_store () const + { + switch (u.version.major) { + case 1: return u.version.to_int () >= 0x00010003u ? this+u.version1.varStore : Null(VariationStore); +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.varStore; +#endif + default: return Null(VariationStore); + } + } + + + bool has_data () const { return u.version.to_int (); } + unsigned int get_glyph_class (hb_codepoint_t glyph) const + { return get_glyph_class_def ().get_class (glyph); } + void get_glyphs_in_class (unsigned int klass, hb_set_t *glyphs) const + { get_glyph_class_def ().collect_class (glyphs, klass); } + + unsigned int get_mark_attachment_type (hb_codepoint_t glyph) const + { return get_mark_attach_class_def ().get_class (glyph); } + + unsigned int get_attach_points (hb_codepoint_t glyph_id, + unsigned int start_offset, + unsigned int *point_count /* IN/OUT */, + unsigned int *point_array /* OUT */) const + { return get_attach_list ().get_attach_points (glyph_id, start_offset, point_count, point_array); } + + unsigned int get_lig_carets (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t glyph_id, + unsigned int start_offset, + unsigned int *caret_count /* IN/OUT */, + hb_position_t *caret_array /* OUT */) const + { return get_lig_caret_list ().get_lig_carets (font, + direction, glyph_id, get_var_store(), + start_offset, caret_count, caret_array); } + + bool mark_set_covers (unsigned int set_index, hb_codepoint_t glyph_id) const + { return get_mark_glyph_sets ().covers (set_index, glyph_id); } + + /* glyph_props is a 16-bit integer where the lower 8-bit have bits representing + * glyph class and other bits, and high 8-bit the mark attachment type (if any). + * Not to be confused with lookup_props which is very similar. */ + unsigned int get_glyph_props (hb_codepoint_t glyph) const + { + unsigned int klass = get_glyph_class (glyph); + + static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH == (unsigned int) LookupFlag::IgnoreBaseGlyphs), ""); + static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE == (unsigned int) LookupFlag::IgnoreLigatures), ""); + static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_MARK == (unsigned int) LookupFlag::IgnoreMarks), ""); + + switch (klass) { + default: return HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED; + case BaseGlyph: return HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH; + case LigatureGlyph: return HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE; + case MarkGlyph: + klass = get_mark_attachment_type (glyph); + return HB_OT_LAYOUT_GLYPH_PROPS_MARK | (klass << 8); + } + } + + HB_INTERNAL bool is_blocklisted (hb_blob_t *blob, + hb_face_t *face) const; + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { + table = hb_sanitize_context_t ().reference_table (face); + if (unlikely (table->is_blocklisted (table.get_blob (), face))) + { + hb_blob_destroy (table.get_blob ()); + table = hb_blob_get_empty (); + } + } + ~accelerator_t () { table.destroy (); } + + unsigned int get_glyph_props (hb_codepoint_t glyph) const + { + unsigned v; + +#ifndef HB_NO_GDEF_CACHE + if (glyph_props_cache.get (glyph, &v)) + return v; +#endif + + v = table->get_glyph_props (glyph); + +#ifndef HB_NO_GDEF_CACHE + if (likely (table.get_blob ())) // Don't try setting if we are the null instance! + glyph_props_cache.set (glyph, v); +#endif + + return v; + + } + + hb_blob_ptr_t table; +#ifndef HB_NO_GDEF_CACHE + mutable hb_cache_t<21, 3, 8> glyph_props_cache; +#endif + }; + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { get_lig_caret_list ().collect_variation_indices (c); } + + void remap_layout_variation_indices (const hb_set_t *layout_variation_indices, + hb_hashmap_t> *layout_variation_idx_delta_map /* OUT */) const + { + if (!has_var_store ()) return; + if (layout_variation_indices->is_empty ()) return; + + unsigned new_major = 0, new_minor = 0; + unsigned last_major = (layout_variation_indices->get_min ()) >> 16; + for (unsigned idx : layout_variation_indices->iter ()) + { + uint16_t major = idx >> 16; + if (major >= get_var_store ().get_sub_table_count ()) break; + if (major != last_major) + { + new_minor = 0; + ++new_major; + } + + unsigned new_idx = (new_major << 16) + new_minor; + if (!layout_variation_idx_delta_map->has (idx)) + continue; + int delta = hb_second (layout_variation_idx_delta_map->get (idx)); + + layout_variation_idx_delta_map->set (idx, hb_pair_t (new_idx, delta)); + ++new_minor; + last_major = major; + } + } + + protected: + union { + FixedVersion<> version; /* Version identifier */ + GDEFVersion1_2 version1; +#ifndef HB_NO_BEYOND_64K + GDEFVersion1_2 version2; +#endif + } u; + public: + DEFINE_SIZE_MIN (4); +}; + +struct GDEF_accelerator_t : GDEF::accelerator_t { + GDEF_accelerator_t (hb_face_t *face) : GDEF::accelerator_t (face) {} +}; + +} /* namespace OT */ + + +#endif /* OT_LAYOUT_GDEF_GDEF_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/Anchor.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/Anchor.hh new file mode 100644 index 0000000000..49e76e7750 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/Anchor.hh @@ -0,0 +1,83 @@ +#ifndef OT_LAYOUT_GPOS_ANCHOR_HH +#define OT_LAYOUT_GPOS_ANCHOR_HH + +#include "AnchorFormat1.hh" +#include "AnchorFormat2.hh" +#include "AnchorFormat3.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct Anchor +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + AnchorFormat1 format1; + AnchorFormat2 format2; + AnchorFormat3 format3; + } u; + public: + DEFINE_SIZE_UNION (2, format); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 1: return_trace (u.format1.sanitize (c)); + case 2: return_trace (u.format2.sanitize (c)); + case 3: return_trace (u.format3.sanitize (c)); + default:return_trace (true); + } + } + + void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id, + float *x, float *y) const + { + *x = *y = 0; + switch (u.format) { + case 1: u.format1.get_anchor (c, glyph_id, x, y); return; + case 2: u.format2.get_anchor (c, glyph_id, x, y); return; + case 3: u.format3.get_anchor (c, glyph_id, x, y); return; + default: return; + } + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + switch (u.format) { + case 1: return_trace (bool (reinterpret_cast (u.format1.copy (c->serializer)))); + case 2: + if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING) + { + // AnchorFormat 2 just containins extra hinting information, so + // if hints are being dropped convert to format 1. + return_trace (bool (reinterpret_cast (u.format1.copy (c->serializer)))); + } + return_trace (bool (reinterpret_cast (u.format2.copy (c->serializer)))); + case 3: return_trace (u.format3.subset (c)); + default:return_trace (false); + } + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + switch (u.format) { + case 1: case 2: + return; + case 3: + u.format3.collect_variation_indices (c); + return; + default: return; + } + } +}; + +} +} +} + +#endif // OT_LAYOUT_GPOS_ANCHOR_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat1.hh new file mode 100644 index 0000000000..738cc31bbf --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat1.hh @@ -0,0 +1,46 @@ +#ifndef OT_LAYOUT_GPOS_ANCHORFORMAT1_HH +#define OT_LAYOUT_GPOS_ANCHORFORMAT1_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct AnchorFormat1 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + FWORD xCoordinate; /* Horizontal value--in design units */ + FWORD yCoordinate; /* Vertical value--in design units */ + public: + DEFINE_SIZE_STATIC (6); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id HB_UNUSED, + float *x, float *y) const + { + hb_font_t *font = c->font; + *x = font->em_fscale_x (xCoordinate); + *y = font->em_fscale_y (yCoordinate); + } + + AnchorFormat1* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + AnchorFormat1* out = c->embed (this); + if (!out) return_trace (out); + out->format = 1; + return_trace (out); + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_ANCHORFORMAT1_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat2.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat2.hh new file mode 100644 index 0000000000..70b4d19f53 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat2.hh @@ -0,0 +1,58 @@ +#ifndef OT_LAYOUT_GPOS_ANCHORFORMAT2_HH +#define OT_LAYOUT_GPOS_ANCHORFORMAT2_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct AnchorFormat2 +{ + + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + FWORD xCoordinate; /* Horizontal value--in design units */ + FWORD yCoordinate; /* Vertical value--in design units */ + HBUINT16 anchorPoint; /* Index to glyph contour point */ + public: + DEFINE_SIZE_STATIC (8); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id, + float *x, float *y) const + { + hb_font_t *font = c->font; + +#ifdef HB_NO_HINTING + *x = font->em_fscale_x (xCoordinate); + *y = font->em_fscale_y (yCoordinate); + return; +#endif + + unsigned int x_ppem = font->x_ppem; + unsigned int y_ppem = font->y_ppem; + hb_position_t cx = 0, cy = 0; + bool ret; + + ret = (x_ppem || y_ppem) && + font->get_glyph_contour_point_for_origin (glyph_id, anchorPoint, HB_DIRECTION_LTR, &cx, &cy); + *x = ret && x_ppem ? cx : font->em_fscale_x (xCoordinate); + *y = ret && y_ppem ? cy : font->em_fscale_y (yCoordinate); + } + + AnchorFormat2* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (this)); + } +}; + +} +} +} + +#endif // OT_LAYOUT_GPOS_ANCHORFORMAT2_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh new file mode 100644 index 0000000000..e7e3c5c6d1 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh @@ -0,0 +1,100 @@ +#ifndef OT_LAYOUT_GPOS_ANCHORFORMAT3_HH +#define OT_LAYOUT_GPOS_ANCHORFORMAT3_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct AnchorFormat3 +{ + protected: + HBUINT16 format; /* Format identifier--format = 3 */ + FWORD xCoordinate; /* Horizontal value--in design units */ + FWORD yCoordinate; /* Vertical value--in design units */ + Offset16To + xDeviceTable; /* Offset to Device table for X + * coordinate-- from beginning of + * Anchor table (may be NULL) */ + Offset16To + yDeviceTable; /* Offset to Device table for Y + * coordinate-- from beginning of + * Anchor table (may be NULL) */ + public: + DEFINE_SIZE_STATIC (10); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && xDeviceTable.sanitize (c, this) && yDeviceTable.sanitize (c, this)); + } + + void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id HB_UNUSED, + float *x, float *y) const + { + hb_font_t *font = c->font; + *x = font->em_fscale_x (xCoordinate); + *y = font->em_fscale_y (yCoordinate); + + if (font->x_ppem || font->num_coords) + *x += (this+xDeviceTable).get_x_delta (font, c->var_store, c->var_store_cache); + if (font->y_ppem || font->num_coords) + *y += (this+yDeviceTable).get_y_delta (font, c->var_store, c->var_store_cache); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out)) return_trace (false); + if (unlikely (!c->serializer->embed (format))) return_trace (false); + if (unlikely (!c->serializer->embed (xCoordinate))) return_trace (false); + if (unlikely (!c->serializer->embed (yCoordinate))) return_trace (false); + + unsigned x_varidx = xDeviceTable ? (this+xDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX; + if (c->plan->layout_variation_idx_delta_map.has (x_varidx)) + { + int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (x_varidx)); + if (delta != 0) + { + if (!c->serializer->check_assign (out->xCoordinate, xCoordinate + delta, + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + } + } + + unsigned y_varidx = yDeviceTable ? (this+yDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX; + if (c->plan->layout_variation_idx_delta_map.has (y_varidx)) + { + int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (y_varidx)); + if (delta != 0) + { + if (!c->serializer->check_assign (out->yCoordinate, yCoordinate + delta, + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + } + } + + if (c->plan->all_axes_pinned) + return_trace (c->serializer->check_assign (out->format, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW)); + + if (!c->serializer->embed (xDeviceTable)) return_trace (false); + if (!c->serializer->embed (yDeviceTable)) return_trace (false); + + out->xDeviceTable.serialize_copy (c->serializer, xDeviceTable, this, 0, hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map); + out->yDeviceTable.serialize_copy (c->serializer, yDeviceTable, this, 0, hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map); + return_trace (out); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + (this+xDeviceTable).collect_variation_indices (c); + (this+yDeviceTable).collect_variation_indices (c); + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_ANCHORFORMAT3_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorMatrix.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorMatrix.hh new file mode 100644 index 0000000000..c442efa1ea --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorMatrix.hh @@ -0,0 +1,77 @@ +#ifndef OT_LAYOUT_GPOS_ANCHORMATRIX_HH +#define OT_LAYOUT_GPOS_ANCHORMATRIX_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct AnchorMatrix +{ + HBUINT16 rows; /* Number of rows */ + UnsizedArrayOf> + matrixZ; /* Matrix of offsets to Anchor tables-- + * from beginning of AnchorMatrix table */ + public: + DEFINE_SIZE_ARRAY (2, matrixZ); + + bool sanitize (hb_sanitize_context_t *c, unsigned int cols) const + { + TRACE_SANITIZE (this); + if (!c->check_struct (this)) return_trace (false); + if (unlikely (hb_unsigned_mul_overflows (rows, cols))) return_trace (false); + unsigned int count = rows * cols; + if (!c->check_array (matrixZ.arrayZ, count)) return_trace (false); + for (unsigned int i = 0; i < count; i++) + if (!matrixZ[i].sanitize (c, this)) return_trace (false); + return_trace (true); + } + + const Anchor& get_anchor (unsigned int row, unsigned int col, + unsigned int cols, bool *found) const + { + *found = false; + if (unlikely (row >= rows || col >= cols)) return Null (Anchor); + *found = !matrixZ[row * cols + col].is_null (); + return this+matrixZ[row * cols + col]; + } + + template + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + Iterator index_iter) const + { + for (unsigned i : index_iter) + (this+matrixZ[i]).collect_variation_indices (c); + } + + template + bool subset (hb_subset_context_t *c, + unsigned num_rows, + Iterator index_iter) const + { + TRACE_SUBSET (this); + + auto *out = c->serializer->start_embed (this); + + if (!index_iter) return_trace (false); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + out->rows = num_rows; + for (const unsigned i : index_iter) + { + auto *offset = c->serializer->embed (matrixZ[i]); + if (!offset) return_trace (false); + offset->serialize_subset (c, matrixZ[i], this); + } + + return_trace (true); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_ANCHORMATRIX_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/ChainContextPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/ChainContextPos.hh new file mode 100644 index 0000000000..d551ac2a2b --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/ChainContextPos.hh @@ -0,0 +1,14 @@ +#ifndef OT_LAYOUT_GPOS_CHAINCONTEXTPOS_HH +#define OT_LAYOUT_GPOS_CHAINCONTEXTPOS_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct ChainContextPos : ChainContext {}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_CHAINCONTEXTPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/Common.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/Common.hh new file mode 100644 index 0000000000..408197454f --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/Common.hh @@ -0,0 +1,33 @@ +#ifndef OT_LAYOUT_GPOS_COMMON_HH +#define OT_LAYOUT_GPOS_COMMON_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +enum attach_type_t { + ATTACH_TYPE_NONE = 0X00, + + /* Each attachment should be either a mark or a cursive; can't be both. */ + ATTACH_TYPE_MARK = 0X01, + ATTACH_TYPE_CURSIVE = 0X02, +}; + +/* buffer **position** var allocations */ +#define attach_chain() var.i16[0] /* glyph to which this attaches to, relative to current glyphs; negative for going back, positive for forward. */ +#define attach_type() var.u8[2] /* attachment type */ +/* Note! if attach_chain() is zero, the value of attach_type() is irrelevant. */ + +template +static void SinglePos_serialize (hb_serialize_context_t *c, + const SrcLookup *src, + Iterator it, + const hb_hashmap_t> *layout_variation_idx_delta_map, + bool all_axes_pinned); + + +} +} +} + +#endif // OT_LAYOUT_GPOS_COMMON_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/ContextPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/ContextPos.hh new file mode 100644 index 0000000000..2a01eaa3a6 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/ContextPos.hh @@ -0,0 +1,14 @@ +#ifndef OT_LAYOUT_GPOS_CONTEXTPOS_HH +#define OT_LAYOUT_GPOS_CONTEXTPOS_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct ContextPos : Context {}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_CONTEXTPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePos.hh new file mode 100644 index 0000000000..0105a9b854 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePos.hh @@ -0,0 +1,35 @@ +#ifndef OT_LAYOUT_GPOS_CURSIVEPOS_HH +#define OT_LAYOUT_GPOS_CURSIVEPOS_HH + +#include "CursivePosFormat1.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct CursivePos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + CursivePosFormat1 format1; + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_CURSIVEPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePosFormat1.hh new file mode 100644 index 0000000000..b8773ba0aa --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/CursivePosFormat1.hh @@ -0,0 +1,301 @@ +#ifndef OT_LAYOUT_GPOS_CURSIVEPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_CURSIVEPOSFORMAT1_HH + +#include "Anchor.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct EntryExitRecord +{ + friend struct CursivePosFormat1; + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (entryAnchor.sanitize (c, base) && exitAnchor.sanitize (c, base)); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + const void *src_base) const + { + (src_base+entryAnchor).collect_variation_indices (c); + (src_base+exitAnchor).collect_variation_indices (c); + } + + EntryExitRecord* subset (hb_subset_context_t *c, + const void *src_base) const + { + TRACE_SERIALIZE (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (nullptr); + + out->entryAnchor.serialize_subset (c, entryAnchor, src_base); + out->exitAnchor.serialize_subset (c, exitAnchor, src_base); + return_trace (out); + } + + protected: + Offset16To + entryAnchor; /* Offset to EntryAnchor table--from + * beginning of CursivePos + * subtable--may be NULL */ + Offset16To + exitAnchor; /* Offset to ExitAnchor table--from + * beginning of CursivePos + * subtable--may be NULL */ + public: + DEFINE_SIZE_STATIC (4); +}; + +static void +reverse_cursive_minor_offset (hb_glyph_position_t *pos, unsigned int i, hb_direction_t direction, unsigned int new_parent) { + int chain = pos[i].attach_chain(), type = pos[i].attach_type(); + if (likely (!chain || 0 == (type & ATTACH_TYPE_CURSIVE))) + return; + + pos[i].attach_chain() = 0; + + unsigned int j = (int) i + chain; + + /* Stop if we see new parent in the chain. */ + if (j == new_parent) + return; + + reverse_cursive_minor_offset (pos, j, direction, new_parent); + + if (HB_DIRECTION_IS_HORIZONTAL (direction)) + pos[j].y_offset = -pos[i].y_offset; + else + pos[j].x_offset = -pos[i].x_offset; + + pos[j].attach_chain() = -chain; + pos[j].attach_type() = type; +} + + +struct CursivePosFormat1 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + Offset16To + coverage; /* Offset to Coverage table--from + * beginning of subtable */ + Array16Of + entryExitRecord; /* Array of EntryExit records--in + * Coverage Index order */ + public: + DEFINE_SIZE_ARRAY (6, entryExitRecord); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && entryExitRecord.sanitize (c, this)); + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + + hb_zip (this+coverage, entryExitRecord) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + | hb_apply ([&] (const EntryExitRecord& record) { record.collect_variation_indices (c, this); }) + ; + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { if (unlikely (!(this+coverage).collect_coverage (c->input))) return; } + + const Coverage &get_coverage () const { return this+coverage; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + + const EntryExitRecord &this_record = entryExitRecord[(this+coverage).get_coverage (buffer->cur().codepoint)]; + if (!this_record.entryAnchor) return_trace (false); + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.reset_fast (buffer->idx, 1); + unsigned unsafe_from; + if (unlikely (!skippy_iter.prev (&unsafe_from))) + { + buffer->unsafe_to_concat_from_outbuffer (unsafe_from, buffer->idx + 1); + return_trace (false); + } + + const EntryExitRecord &prev_record = entryExitRecord[(this+coverage).get_coverage (buffer->info[skippy_iter.idx].codepoint)]; + if (!prev_record.exitAnchor) + { + buffer->unsafe_to_concat_from_outbuffer (skippy_iter.idx, buffer->idx + 1); + return_trace (false); + } + + unsigned int i = skippy_iter.idx; + unsigned int j = buffer->idx; + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "cursive attaching glyph at %u to glyph at %u", + i, j); + } + + buffer->unsafe_to_break (i, j + 1); + float entry_x, entry_y, exit_x, exit_y; + (this+prev_record.exitAnchor).get_anchor (c, buffer->info[i].codepoint, &exit_x, &exit_y); + (this+this_record.entryAnchor).get_anchor (c, buffer->info[j].codepoint, &entry_x, &entry_y); + + hb_glyph_position_t *pos = buffer->pos; + + hb_position_t d; + /* Main-direction adjustment */ + switch (c->direction) { + case HB_DIRECTION_LTR: + pos[i].x_advance = roundf (exit_x) + pos[i].x_offset; + + d = roundf (entry_x) + pos[j].x_offset; + pos[j].x_advance -= d; + pos[j].x_offset -= d; + break; + case HB_DIRECTION_RTL: + d = roundf (exit_x) + pos[i].x_offset; + pos[i].x_advance -= d; + pos[i].x_offset -= d; + + pos[j].x_advance = roundf (entry_x) + pos[j].x_offset; + break; + case HB_DIRECTION_TTB: + pos[i].y_advance = roundf (exit_y) + pos[i].y_offset; + + d = roundf (entry_y) + pos[j].y_offset; + pos[j].y_advance -= d; + pos[j].y_offset -= d; + break; + case HB_DIRECTION_BTT: + d = roundf (exit_y) + pos[i].y_offset; + pos[i].y_advance -= d; + pos[i].y_offset -= d; + + pos[j].y_advance = roundf (entry_y); + break; + case HB_DIRECTION_INVALID: + default: + break; + } + + /* Cross-direction adjustment */ + + /* We attach child to parent (think graph theory and rooted trees whereas + * the root stays on baseline and each node aligns itself against its + * parent. + * + * Optimize things for the case of RightToLeft, as that's most common in + * Arabic. */ + unsigned int child = i; + unsigned int parent = j; + hb_position_t x_offset = entry_x - exit_x; + hb_position_t y_offset = entry_y - exit_y; + if (!(c->lookup_props & LookupFlag::RightToLeft)) + { + unsigned int k = child; + child = parent; + parent = k; + x_offset = -x_offset; + y_offset = -y_offset; + } + + /* If child was already connected to someone else, walk through its old + * chain and reverse the link direction, such that the whole tree of its + * previous connection now attaches to new parent. Watch out for case + * where new parent is on the path from old chain... + */ + reverse_cursive_minor_offset (pos, child, c->direction, parent); + + pos[child].attach_type() = ATTACH_TYPE_CURSIVE; + pos[child].attach_chain() = (int) parent - (int) child; + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + if (likely (HB_DIRECTION_IS_HORIZONTAL (c->direction))) + pos[child].y_offset = y_offset; + else + pos[child].x_offset = x_offset; + + /* If parent was attached to child, separate them. + * https://github.com/harfbuzz/harfbuzz/issues/2469 + */ + if (unlikely (pos[parent].attach_chain() == -pos[child].attach_chain())) + { + pos[parent].attach_chain() = 0; + if (likely (HB_DIRECTION_IS_HORIZONTAL (c->direction))) + pos[parent].y_offset = 0; + else + pos[parent].x_offset = 0; + } + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "cursive attached glyph at %u to glyph at %u", + i, j); + } + + buffer->idx++; + return_trace (true); + } + + template + void serialize (hb_subset_context_t *c, + Iterator it, + const void *src_base) + { + if (unlikely (!c->serializer->extend_min ((*this)))) return; + this->format = 1; + this->entryExitRecord.len = it.len (); + + for (const EntryExitRecord& entry_record : + it + | hb_map (hb_second)) + entry_record.subset (c, src_base); + + auto glyphs = + + it + | hb_map_retains_sorting (hb_first) + ; + + coverage.serialize_serialize (c->serializer, glyphs); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out)) return_trace (false); + + auto it = + + hb_zip (this+coverage, entryExitRecord) + | hb_filter (glyphset, hb_first) + | hb_map_retains_sorting ([&] (hb_pair_t p) -> hb_pair_t + { return hb_pair (glyph_map[p.first], p.second);}) + ; + + bool ret = bool (it); + out->serialize (c, it, this); + return_trace (ret); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_CURSIVEPOSFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/ExtensionPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/ExtensionPos.hh new file mode 100644 index 0000000000..d1808adab4 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/ExtensionPos.hh @@ -0,0 +1,17 @@ +#ifndef OT_LAYOUT_GPOS_EXTENSIONPOS_HH +#define OT_LAYOUT_GPOS_EXTENSIONPOS_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct ExtensionPos : Extension +{ + typedef struct PosLookupSubTable SubTable; +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_EXTENSIONPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/GPOS.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/GPOS.hh new file mode 100644 index 0000000000..f4af98b25f --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/GPOS.hh @@ -0,0 +1,171 @@ +#ifndef OT_LAYOUT_GPOS_GPOS_HH +#define OT_LAYOUT_GPOS_GPOS_HH + +#include "../../../hb-ot-layout-common.hh" +#include "../../../hb-ot-layout-gsubgpos.hh" +#include "Common.hh" +#include "PosLookup.hh" + +namespace OT { + +using Layout::GPOS_impl::PosLookup; + +namespace Layout { + +static void +propagate_attachment_offsets (hb_glyph_position_t *pos, + unsigned int len, + unsigned int i, + hb_direction_t direction, + unsigned nesting_level = HB_MAX_NESTING_LEVEL); + +/* + * GPOS -- Glyph Positioning + * https://docs.microsoft.com/en-us/typography/opentype/spec/gpos + */ + +struct GPOS : GSUBGPOS +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_GPOS; + + using Lookup = PosLookup; + + const PosLookup& get_lookup (unsigned int i) const + { return static_cast (GSUBGPOS::get_lookup (i)); } + + static inline void position_start (hb_font_t *font, hb_buffer_t *buffer); + static inline void position_finish_advances (hb_font_t *font, hb_buffer_t *buffer); + static inline void position_finish_offsets (hb_font_t *font, hb_buffer_t *buffer); + + bool subset (hb_subset_context_t *c) const + { + hb_subset_layout_context_t l (c, tableTag); + return GSUBGPOS::subset (&l); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (GSUBGPOS::sanitize (c)); + } + + HB_INTERNAL bool is_blocklisted (hb_blob_t *blob, + hb_face_t *face) const; + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + for (unsigned i = 0; i < GSUBGPOS::get_lookup_count (); i++) + { + if (!c->gpos_lookups->has (i)) continue; + const PosLookup &l = get_lookup (i); + l.dispatch (c); + } + } + + void closure_lookups (hb_face_t *face, + const hb_set_t *glyphs, + hb_set_t *lookup_indexes /* IN/OUT */) const + { GSUBGPOS::closure_lookups (face, glyphs, lookup_indexes); } + + typedef GSUBGPOS::accelerator_t accelerator_t; +}; + + +static void +propagate_attachment_offsets (hb_glyph_position_t *pos, + unsigned int len, + unsigned int i, + hb_direction_t direction, + unsigned nesting_level) +{ + /* Adjusts offsets of attached glyphs (both cursive and mark) to accumulate + * offset of glyph they are attached to. */ + int chain = pos[i].attach_chain(), type = pos[i].attach_type(); + if (likely (!chain)) + return; + + pos[i].attach_chain() = 0; + + unsigned int j = (int) i + chain; + + if (unlikely (j >= len)) + return; + + if (unlikely (!nesting_level)) + return; + + propagate_attachment_offsets (pos, len, j, direction, nesting_level - 1); + + assert (!!(type & GPOS_impl::ATTACH_TYPE_MARK) ^ !!(type & GPOS_impl::ATTACH_TYPE_CURSIVE)); + + if (type & GPOS_impl::ATTACH_TYPE_CURSIVE) + { + if (HB_DIRECTION_IS_HORIZONTAL (direction)) + pos[i].y_offset += pos[j].y_offset; + else + pos[i].x_offset += pos[j].x_offset; + } + else /*if (type & GPOS_impl::ATTACH_TYPE_MARK)*/ + { + pos[i].x_offset += pos[j].x_offset; + pos[i].y_offset += pos[j].y_offset; + + assert (j < i); + if (HB_DIRECTION_IS_FORWARD (direction)) + for (unsigned int k = j; k < i; k++) { + pos[i].x_offset -= pos[k].x_advance; + pos[i].y_offset -= pos[k].y_advance; + } + else + for (unsigned int k = j + 1; k < i + 1; k++) { + pos[i].x_offset += pos[k].x_advance; + pos[i].y_offset += pos[k].y_advance; + } + } +} + +void +GPOS::position_start (hb_font_t *font HB_UNUSED, hb_buffer_t *buffer) +{ + unsigned int count = buffer->len; + for (unsigned int i = 0; i < count; i++) + buffer->pos[i].attach_chain() = buffer->pos[i].attach_type() = 0; +} + +void +GPOS::position_finish_advances (hb_font_t *font HB_UNUSED, hb_buffer_t *buffer HB_UNUSED) +{ + //_hb_buffer_assert_gsubgpos_vars (buffer); +} + +void +GPOS::position_finish_offsets (hb_font_t *font, hb_buffer_t *buffer) +{ + _hb_buffer_assert_gsubgpos_vars (buffer); + + unsigned int len; + hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, &len); + hb_direction_t direction = buffer->props.direction; + + /* Handle attachments */ + if (buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT) + for (unsigned i = 0; i < len; i++) + propagate_attachment_offsets (pos, len, i, direction); + + if (unlikely (font->slant)) + { + for (unsigned i = 0; i < len; i++) + if (unlikely (pos[i].y_offset)) + pos[i].x_offset += roundf (font->slant_xy * pos[i].y_offset); + } +} + +} + +struct GPOS_accelerator_t : Layout::GPOS::accelerator_t { + GPOS_accelerator_t (hb_face_t *face) : Layout::GPOS::accelerator_t (face) {} +}; + +} + +#endif /* OT_LAYOUT_GPOS_GPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/LigatureArray.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/LigatureArray.hh new file mode 100644 index 0000000000..a2d807cc32 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/LigatureArray.hh @@ -0,0 +1,56 @@ +#ifndef OT_LAYOUT_GPOS_LIGATUREARRAY_HH +#define OT_LAYOUT_GPOS_LIGATUREARRAY_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + + +typedef AnchorMatrix LigatureAttach; /* component-major-- + * in order of writing direction--, + * mark-minor-- + * ordered by class--zero-based. */ + +/* Array of LigatureAttach tables ordered by LigatureCoverage Index */ +struct LigatureArray : List16OfOffset16To +{ + template + bool subset (hb_subset_context_t *c, + Iterator coverage, + unsigned class_count, + const hb_map_t *klass_mapping) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + for (const auto _ : + hb_zip (coverage, *this) + | hb_filter (glyphset, hb_first)) + { + auto *matrix = out->serialize_append (c->serializer); + if (unlikely (!matrix)) return_trace (false); + + const LigatureAttach& src = (this + _.second); + auto indexes = + + hb_range (src.rows * class_count) + | hb_filter ([=] (unsigned index) { return klass_mapping->has (index % class_count); }) + ; + matrix->serialize_subset (c, + _.second, + this, + src.rows, + indexes); + } + return_trace (this->len); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_LIGATUREARRAY_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkArray.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkArray.hh new file mode 100644 index 0000000000..ff43ffb8c5 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkArray.hh @@ -0,0 +1,128 @@ +#ifndef OT_LAYOUT_GPOS_MARKARRAY_HH +#define OT_LAYOUT_GPOS_MARKARRAY_HH + +#include "AnchorMatrix.hh" +#include "MarkRecord.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct MarkArray : Array16Of /* Array of MarkRecords--in Coverage order */ +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (Array16Of::sanitize (c, this)); + } + + bool apply (hb_ot_apply_context_t *c, + unsigned int mark_index, unsigned int glyph_index, + const AnchorMatrix &anchors, unsigned int class_count, + unsigned int glyph_pos) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + const MarkRecord &record = Array16Of::operator[](mark_index); + unsigned int mark_class = record.klass; + + const Anchor& mark_anchor = this + record.markAnchor; + bool found; + const Anchor& glyph_anchor = anchors.get_anchor (glyph_index, mark_class, class_count, &found); + /* If this subtable doesn't have an anchor for this base and this class, + * return false such that the subsequent subtables have a chance at it. */ + if (unlikely (!found)) return_trace (false); + + float mark_x, mark_y, base_x, base_y; + + buffer->unsafe_to_break (glyph_pos, buffer->idx + 1); + mark_anchor.get_anchor (c, buffer->cur().codepoint, &mark_x, &mark_y); + glyph_anchor.get_anchor (c, buffer->info[glyph_pos].codepoint, &base_x, &base_y); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "attaching mark glyph at %u to glyph at %u", + c->buffer->idx, glyph_pos); + } + + hb_glyph_position_t &o = buffer->cur_pos(); + o.x_offset = roundf (base_x - mark_x); + o.y_offset = roundf (base_y - mark_y); + o.attach_type() = ATTACH_TYPE_MARK; + o.attach_chain() = (int) glyph_pos - (int) buffer->idx; + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "attached mark glyph at %u to glyph at %u", + c->buffer->idx, glyph_pos); + } + + buffer->idx++; + return_trace (true); + } + + template + bool subset (hb_subset_context_t *c, + Iterator coverage, + const hb_map_t *klass_mapping) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + + auto* out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + auto mark_iter = + + hb_zip (coverage, this->iter ()) + | hb_filter (glyphset, hb_first) + | hb_map (hb_second) + ; + + unsigned new_length = 0; + for (const auto& mark_record : mark_iter) { + if (unlikely (!mark_record.subset (c, this, klass_mapping))) + return_trace (false); + new_length++; + } + + if (unlikely (!c->serializer->check_assign (out->len, new_length, + HB_SERIALIZE_ERROR_ARRAY_OVERFLOW))) + return_trace (false); + + return_trace (true); + } +}; + +HB_INTERNAL inline +void Markclass_closure_and_remap_indexes (const Coverage &mark_coverage, + const MarkArray &mark_array, + const hb_set_t &glyphset, + hb_map_t* klass_mapping /* INOUT */) +{ + hb_set_t orig_classes; + + + hb_zip (mark_coverage, mark_array) + | hb_filter (glyphset, hb_first) + | hb_map (hb_second) + | hb_map (&MarkRecord::get_class) + | hb_sink (orig_classes) + ; + + unsigned idx = 0; + for (auto klass : orig_classes.iter ()) + { + if (klass_mapping->has (klass)) continue; + klass_mapping->set (klass, idx); + idx++; + } +} + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKARRAY_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePos.hh new file mode 100644 index 0000000000..cd2fc7ccfd --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePos.hh @@ -0,0 +1,41 @@ +#ifndef OT_LAYOUT_GPOS_MARKBASEPOS_HH +#define OT_LAYOUT_GPOS_MARKBASEPOS_HH + +#include "MarkBasePosFormat1.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct MarkBasePos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + MarkBasePosFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + MarkBasePosFormat1_2 format2; +#endif + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKBASEPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePosFormat1.hh new file mode 100644 index 0000000000..eb4712049b --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkBasePosFormat1.hh @@ -0,0 +1,244 @@ +#ifndef OT_LAYOUT_GPOS_MARKBASEPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_MARKBASEPOSFORMAT1_HH + +#include "MarkArray.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +typedef AnchorMatrix BaseArray; /* base-major-- + * in order of BaseCoverage Index--, + * mark-minor-- + * ordered by class--zero-based. */ + +template +struct MarkBasePosFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + markCoverage; /* Offset to MarkCoverage table--from + * beginning of MarkBasePos subtable */ + typename Types::template OffsetTo + baseCoverage; /* Offset to BaseCoverage table--from + * beginning of MarkBasePos subtable */ + HBUINT16 classCount; /* Number of classes defined for marks */ + typename Types::template OffsetTo + markArray; /* Offset to MarkArray table--from + * beginning of MarkBasePos subtable */ + typename Types::template OffsetTo + baseArray; /* Offset to BaseArray table--from + * beginning of MarkBasePos subtable */ + + public: + DEFINE_SIZE_STATIC (4 + 4 * Types::size); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + markCoverage.sanitize (c, this) && + baseCoverage.sanitize (c, this) && + markArray.sanitize (c, this) && + baseArray.sanitize (c, this, (unsigned int) classCount)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return (this+markCoverage).intersects (glyphs) && + (this+baseCoverage).intersects (glyphs); + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + + hb_zip (this+markCoverage, this+markArray) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + | hb_apply ([&] (const MarkRecord& record) { record.collect_variation_indices (c, &(this+markArray)); }) + ; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+markCoverage, this+markArray, *c->glyph_set, &klass_mapping); + + unsigned basecount = (this+baseArray).rows; + auto base_iter = + + hb_zip (this+baseCoverage, hb_range (basecount)) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + ; + + hb_sorted_vector_t base_indexes; + for (const unsigned row : base_iter) + { + + hb_range ((unsigned) classCount) + | hb_filter (klass_mapping) + | hb_map ([&] (const unsigned col) { return row * (unsigned) classCount + col; }) + | hb_sink (base_indexes) + ; + } + (this+baseArray).collect_variation_indices (c, base_indexes.iter ()); + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+markCoverage).collect_coverage (c->input))) return; + if (unlikely (!(this+baseCoverage).collect_coverage (c->input))) return; + } + + const Coverage &get_coverage () const { return this+markCoverage; } + + static inline bool accept (hb_buffer_t *buffer, unsigned idx) + { + /* We only want to attach to the first of a MultipleSubst sequence. + * https://github.com/harfbuzz/harfbuzz/issues/740 + * Reject others... + * ...but stop if we find a mark in the MultipleSubst sequence: + * https://github.com/harfbuzz/harfbuzz/issues/1020 */ + return !_hb_glyph_info_multiplied (&buffer->info[idx]) || + 0 == _hb_glyph_info_get_lig_comp (&buffer->info[idx]) || + (idx == 0 || + _hb_glyph_info_is_mark (&buffer->info[idx - 1]) || + !_hb_glyph_info_multiplied (&buffer->info[idx - 1]) || + _hb_glyph_info_get_lig_id (&buffer->info[idx]) != + _hb_glyph_info_get_lig_id (&buffer->info[idx - 1]) || + _hb_glyph_info_get_lig_comp (&buffer->info[idx]) != + _hb_glyph_info_get_lig_comp (&buffer->info[idx - 1]) + 1 + ); + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int mark_index = (this+markCoverage).get_coverage (buffer->cur().codepoint); + if (likely (mark_index == NOT_COVERED)) return_trace (false); + + /* Now we search backwards for a non-mark glyph. + * We don't use skippy_iter.prev() to avoid O(n^2) behavior. */ + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.set_lookup_props (LookupFlag::IgnoreMarks); + + if (c->last_base_until > buffer->idx) + { + c->last_base_until = 0; + c->last_base = -1; + } + unsigned j; + for (j = buffer->idx; j > c->last_base_until; j--) + { + auto match = skippy_iter.match (buffer->info[j - 1]); + if (match == skippy_iter.MATCH) + { + // https://github.com/harfbuzz/harfbuzz/issues/4124 + if (!accept (buffer, j - 1) && + NOT_COVERED == (this+baseCoverage).get_coverage (buffer->info[j - 1].codepoint)) + match = skippy_iter.SKIP; + } + if (match == skippy_iter.MATCH) + { + c->last_base = (signed) j - 1; + break; + } + } + c->last_base_until = buffer->idx; + if (c->last_base == -1) + { + buffer->unsafe_to_concat_from_outbuffer (0, buffer->idx + 1); + return_trace (false); + } + + unsigned idx = (unsigned) c->last_base; + + /* Checking that matched glyph is actually a base glyph by GDEF is too strong; disabled */ + //if (!_hb_glyph_info_is_base_glyph (&buffer->info[idx])) { return_trace (false); } + + unsigned int base_index = (this+baseCoverage).get_coverage (buffer->info[idx].codepoint); + if (base_index == NOT_COVERED) + { + buffer->unsafe_to_concat_from_outbuffer (idx, buffer->idx + 1); + return_trace (false); + } + + return_trace ((this+markArray).apply (c, mark_index, base_index, this+baseArray, classCount, idx)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+markCoverage, this+markArray, glyphset, &klass_mapping); + + if (!klass_mapping.get_population ()) return_trace (false); + out->classCount = klass_mapping.get_population (); + + auto mark_iter = + + hb_zip (this+markCoverage, this+markArray) + | hb_filter (glyphset, hb_first) + ; + + hb_sorted_vector_t new_coverage; + + mark_iter + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + + if (!out->markCoverage.serialize_serialize (c->serializer, new_coverage.iter ())) + return_trace (false); + + out->markArray.serialize_subset (c, markArray, this, + (this+markCoverage).iter (), + &klass_mapping); + + unsigned basecount = (this+baseArray).rows; + auto base_iter = + + hb_zip (this+baseCoverage, hb_range (basecount)) + | hb_filter (glyphset, hb_first) + ; + + new_coverage.reset (); + + base_iter + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + + if (!out->baseCoverage.serialize_serialize (c->serializer, new_coverage.iter ())) + return_trace (false); + + hb_sorted_vector_t base_indexes; + for (const unsigned row : + base_iter + | hb_map (hb_second)) + { + + hb_range ((unsigned) classCount) + | hb_filter (klass_mapping) + | hb_map ([&] (const unsigned col) { return row * (unsigned) classCount + col; }) + | hb_sink (base_indexes) + ; + } + + out->baseArray.serialize_subset (c, baseArray, this, + base_iter.len (), + base_indexes.iter ()); + + return_trace (true); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKBASEPOSFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPos.hh new file mode 100644 index 0000000000..739c325411 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPos.hh @@ -0,0 +1,41 @@ +#ifndef OT_LAYOUT_GPOS_MARKLIGPOS_HH +#define OT_LAYOUT_GPOS_MARKLIGPOS_HH + +#include "MarkLigPosFormat1.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct MarkLigPos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + MarkLigPosFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + MarkLigPosFormat1_2 format2; +#endif + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKLIGPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPosFormat1.hh new file mode 100644 index 0000000000..92e83a0e99 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkLigPosFormat1.hh @@ -0,0 +1,223 @@ +#ifndef OT_LAYOUT_GPOS_MARKLIGPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_MARKLIGPOSFORMAT1_HH + +#include "LigatureArray.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + + +template +struct MarkLigPosFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + markCoverage; /* Offset to Mark Coverage table--from + * beginning of MarkLigPos subtable */ + typename Types::template OffsetTo + ligatureCoverage; /* Offset to Ligature Coverage + * table--from beginning of MarkLigPos + * subtable */ + HBUINT16 classCount; /* Number of defined mark classes */ + typename Types::template OffsetTo + markArray; /* Offset to MarkArray table--from + * beginning of MarkLigPos subtable */ + typename Types::template OffsetTo + ligatureArray; /* Offset to LigatureArray table--from + * beginning of MarkLigPos subtable */ + public: + DEFINE_SIZE_STATIC (4 + 4 * Types::size); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + markCoverage.sanitize (c, this) && + ligatureCoverage.sanitize (c, this) && + markArray.sanitize (c, this) && + ligatureArray.sanitize (c, this, (unsigned int) classCount)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return (this+markCoverage).intersects (glyphs) && + (this+ligatureCoverage).intersects (glyphs); + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + + hb_zip (this+markCoverage, this+markArray) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + | hb_apply ([&] (const MarkRecord& record) { record.collect_variation_indices (c, &(this+markArray)); }) + ; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+markCoverage, this+markArray, *c->glyph_set, &klass_mapping); + + unsigned ligcount = (this+ligatureArray).len; + auto lig_iter = + + hb_zip (this+ligatureCoverage, hb_range (ligcount)) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + ; + + const LigatureArray& lig_array = this+ligatureArray; + for (const unsigned i : lig_iter) + { + hb_sorted_vector_t lig_indexes; + unsigned row_count = lig_array[i].rows; + for (unsigned row : + hb_range (row_count)) + { + + hb_range ((unsigned) classCount) + | hb_filter (klass_mapping) + | hb_map ([&] (const unsigned col) { return row * (unsigned) classCount + col; }) + | hb_sink (lig_indexes) + ; + } + + lig_array[i].collect_variation_indices (c, lig_indexes.iter ()); + } + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+markCoverage).collect_coverage (c->input))) return; + if (unlikely (!(this+ligatureCoverage).collect_coverage (c->input))) return; + } + + const Coverage &get_coverage () const { return this+markCoverage; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int mark_index = (this+markCoverage).get_coverage (buffer->cur().codepoint); + if (likely (mark_index == NOT_COVERED)) return_trace (false); + + /* Now we search backwards for a non-mark glyph */ + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.set_lookup_props (LookupFlag::IgnoreMarks); + + if (c->last_base_until > buffer->idx) + { + c->last_base_until = 0; + c->last_base = -1; + } + unsigned j; + for (j = buffer->idx; j > c->last_base_until; j--) + { + auto match = skippy_iter.match (buffer->info[j - 1]); + if (match == skippy_iter.MATCH) + { + c->last_base = (signed) j - 1; + break; + } + } + c->last_base_until = buffer->idx; + if (c->last_base == -1) + { + buffer->unsafe_to_concat_from_outbuffer (0, buffer->idx + 1); + return_trace (false); + } + + unsigned idx = (unsigned) c->last_base; + + /* Checking that matched glyph is actually a ligature by GDEF is too strong; disabled */ + //if (!_hb_glyph_info_is_ligature (&buffer->info[idx])) { return_trace (false); } + + unsigned int lig_index = (this+ligatureCoverage).get_coverage (buffer->info[idx].codepoint); + if (lig_index == NOT_COVERED) + { + buffer->unsafe_to_concat_from_outbuffer (idx, buffer->idx + 1); + return_trace (false); + } + + const LigatureArray& lig_array = this+ligatureArray; + const LigatureAttach& lig_attach = lig_array[lig_index]; + + /* Find component to attach to */ + unsigned int comp_count = lig_attach.rows; + if (unlikely (!comp_count)) + { + buffer->unsafe_to_concat_from_outbuffer (idx, buffer->idx + 1); + return_trace (false); + } + + /* We must now check whether the ligature ID of the current mark glyph + * is identical to the ligature ID of the found ligature. If yes, we + * can directly use the component index. If not, we attach the mark + * glyph to the last component of the ligature. */ + unsigned int comp_index; + unsigned int lig_id = _hb_glyph_info_get_lig_id (&buffer->info[idx]); + unsigned int mark_id = _hb_glyph_info_get_lig_id (&buffer->cur()); + unsigned int mark_comp = _hb_glyph_info_get_lig_comp (&buffer->cur()); + if (lig_id && lig_id == mark_id && mark_comp > 0) + comp_index = hb_min (comp_count, _hb_glyph_info_get_lig_comp (&buffer->cur())) - 1; + else + comp_index = comp_count - 1; + + return_trace ((this+markArray).apply (c, mark_index, comp_index, lig_attach, classCount, idx)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+markCoverage, this+markArray, glyphset, &klass_mapping); + + if (!klass_mapping.get_population ()) return_trace (false); + out->classCount = klass_mapping.get_population (); + + auto mark_iter = + + hb_zip (this+markCoverage, this+markArray) + | hb_filter (glyphset, hb_first) + ; + + auto new_mark_coverage = + + mark_iter + | hb_map_retains_sorting (hb_first) + | hb_map_retains_sorting (glyph_map) + ; + + if (!out->markCoverage.serialize_serialize (c->serializer, new_mark_coverage)) + return_trace (false); + + out->markArray.serialize_subset (c, markArray, this, + (this+markCoverage).iter (), + &klass_mapping); + + auto new_ligature_coverage = + + hb_iter (this + ligatureCoverage) + | hb_filter (glyphset) + | hb_map_retains_sorting (glyph_map) + ; + + if (!out->ligatureCoverage.serialize_serialize (c->serializer, new_ligature_coverage)) + return_trace (false); + + out->ligatureArray.serialize_subset (c, ligatureArray, this, + hb_iter (this+ligatureCoverage), classCount, &klass_mapping); + + return_trace (true); + } + +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKLIGPOSFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPos.hh new file mode 100644 index 0000000000..cddd2a3d50 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPos.hh @@ -0,0 +1,42 @@ +#ifndef OT_LAYOUT_GPOS_MARKMARKPOS_HH +#define OT_LAYOUT_GPOS_MARKMARKPOS_HH + +#include "MarkMarkPosFormat1.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct MarkMarkPos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + MarkMarkPosFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + MarkMarkPosFormat1_2 format2; +#endif + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKMARKPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPosFormat1.hh new file mode 100644 index 0000000000..9dae5ce5da --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkMarkPosFormat1.hh @@ -0,0 +1,228 @@ +#ifndef OT_LAYOUT_GPOS_MARKMARKPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_MARKMARKPOSFORMAT1_HH + +#include "MarkMarkPosFormat1.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +typedef AnchorMatrix Mark2Array; /* mark2-major-- + * in order of Mark2Coverage Index--, + * mark1-minor-- + * ordered by class--zero-based. */ + +template +struct MarkMarkPosFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + mark1Coverage; /* Offset to Combining Mark1 Coverage + * table--from beginning of MarkMarkPos + * subtable */ + typename Types::template OffsetTo + mark2Coverage; /* Offset to Combining Mark2 Coverage + * table--from beginning of MarkMarkPos + * subtable */ + HBUINT16 classCount; /* Number of defined mark classes */ + typename Types::template OffsetTo + mark1Array; /* Offset to Mark1Array table--from + * beginning of MarkMarkPos subtable */ + typename Types::template OffsetTo + mark2Array; /* Offset to Mark2Array table--from + * beginning of MarkMarkPos subtable */ + public: + DEFINE_SIZE_STATIC (4 + 4 * Types::size); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + mark1Coverage.sanitize (c, this) && + mark2Coverage.sanitize (c, this) && + mark1Array.sanitize (c, this) && + mark2Array.sanitize (c, this, (unsigned int) classCount)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return (this+mark1Coverage).intersects (glyphs) && + (this+mark2Coverage).intersects (glyphs); + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + + hb_zip (this+mark1Coverage, this+mark1Array) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + | hb_apply ([&] (const MarkRecord& record) { record.collect_variation_indices (c, &(this+mark1Array)); }) + ; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+mark1Coverage, this+mark1Array, *c->glyph_set, &klass_mapping); + + unsigned mark2_count = (this+mark2Array).rows; + auto mark2_iter = + + hb_zip (this+mark2Coverage, hb_range (mark2_count)) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + ; + + hb_sorted_vector_t mark2_indexes; + for (const unsigned row : mark2_iter) + { + + hb_range ((unsigned) classCount) + | hb_filter (klass_mapping) + | hb_map ([&] (const unsigned col) { return row * (unsigned) classCount + col; }) + | hb_sink (mark2_indexes) + ; + } + (this+mark2Array).collect_variation_indices (c, mark2_indexes.iter ()); + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+mark1Coverage).collect_coverage (c->input))) return; + if (unlikely (!(this+mark2Coverage).collect_coverage (c->input))) return; + } + + const Coverage &get_coverage () const { return this+mark1Coverage; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int mark1_index = (this+mark1Coverage).get_coverage (buffer->cur().codepoint); + if (likely (mark1_index == NOT_COVERED)) return_trace (false); + + /* now we search backwards for a suitable mark glyph until a non-mark glyph */ + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.reset_fast (buffer->idx, 1); + skippy_iter.set_lookup_props (c->lookup_props & ~(uint32_t)LookupFlag::IgnoreFlags); + unsigned unsafe_from; + if (unlikely (!skippy_iter.prev (&unsafe_from))) + { + buffer->unsafe_to_concat_from_outbuffer (unsafe_from, buffer->idx + 1); + return_trace (false); + } + + if (likely (!_hb_glyph_info_is_mark (&buffer->info[skippy_iter.idx]))) + { + buffer->unsafe_to_concat_from_outbuffer (skippy_iter.idx, buffer->idx + 1); + return_trace (false); + } + + unsigned int j = skippy_iter.idx; + + unsigned int id1 = _hb_glyph_info_get_lig_id (&buffer->cur()); + unsigned int id2 = _hb_glyph_info_get_lig_id (&buffer->info[j]); + unsigned int comp1 = _hb_glyph_info_get_lig_comp (&buffer->cur()); + unsigned int comp2 = _hb_glyph_info_get_lig_comp (&buffer->info[j]); + + if (likely (id1 == id2)) + { + if (id1 == 0) /* Marks belonging to the same base. */ + goto good; + else if (comp1 == comp2) /* Marks belonging to the same ligature component. */ + goto good; + } + else + { + /* If ligature ids don't match, it may be the case that one of the marks + * itself is a ligature. In which case match. */ + if ((id1 > 0 && !comp1) || (id2 > 0 && !comp2)) + goto good; + } + + /* Didn't match. */ + buffer->unsafe_to_concat_from_outbuffer (skippy_iter.idx, buffer->idx + 1); + return_trace (false); + + good: + unsigned int mark2_index = (this+mark2Coverage).get_coverage (buffer->info[j].codepoint); + if (mark2_index == NOT_COVERED) + { + buffer->unsafe_to_concat_from_outbuffer (skippy_iter.idx, buffer->idx + 1); + return_trace (false); + } + + return_trace ((this+mark1Array).apply (c, mark1_index, mark2_index, this+mark2Array, classCount, j)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+mark1Coverage, this+mark1Array, glyphset, &klass_mapping); + + if (!klass_mapping.get_population ()) return_trace (false); + out->classCount = klass_mapping.get_population (); + + auto mark1_iter = + + hb_zip (this+mark1Coverage, this+mark1Array) + | hb_filter (glyphset, hb_first) + ; + + hb_sorted_vector_t new_coverage; + + mark1_iter + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + + if (!out->mark1Coverage.serialize_serialize (c->serializer, new_coverage.iter ())) + return_trace (false); + + out->mark1Array.serialize_subset (c, mark1Array, this, + (this+mark1Coverage).iter (), + &klass_mapping); + + unsigned mark2count = (this+mark2Array).rows; + auto mark2_iter = + + hb_zip (this+mark2Coverage, hb_range (mark2count)) + | hb_filter (glyphset, hb_first) + ; + + new_coverage.reset (); + + mark2_iter + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + + if (!out->mark2Coverage.serialize_serialize (c->serializer, new_coverage.iter ())) + return_trace (false); + + hb_sorted_vector_t mark2_indexes; + for (const unsigned row : + mark2_iter + | hb_map (hb_second)) + { + + hb_range ((unsigned) classCount) + | hb_filter (klass_mapping) + | hb_map ([&] (const unsigned col) { return row * (unsigned) classCount + col; }) + | hb_sink (mark2_indexes) + ; + } + + out->mark2Array.serialize_subset (c, mark2Array, this, mark2_iter.len (), mark2_indexes.iter ()); + + return_trace (true); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKMARKPOSFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/MarkRecord.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkRecord.hh new file mode 100644 index 0000000000..a7d489d2a5 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/MarkRecord.hh @@ -0,0 +1,52 @@ +#ifndef OT_LAYOUT_GPOS_MARKRECORD_HH +#define OT_LAYOUT_GPOS_MARKRECORD_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct MarkRecord +{ + friend struct MarkArray; + + public: + HBUINT16 klass; /* Class defined for this mark */ + Offset16To + markAnchor; /* Offset to Anchor table--from + * beginning of MarkArray table */ + public: + DEFINE_SIZE_STATIC (4); + + unsigned get_class () const { return (unsigned) klass; } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && markAnchor.sanitize (c, base)); + } + + MarkRecord *subset (hb_subset_context_t *c, + const void *src_base, + const hb_map_t *klass_mapping) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (nullptr); + + out->klass = klass_mapping->get (klass); + out->markAnchor.serialize_subset (c, markAnchor, src_base); + return_trace (out); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + const void *src_base) const + { + (src_base+markAnchor).collect_variation_indices (c); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_MARKRECORD_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PairPos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPos.hh new file mode 100644 index 0000000000..c13d4f4894 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPos.hh @@ -0,0 +1,46 @@ +#ifndef OT_LAYOUT_GPOS_PAIRPOS_HH +#define OT_LAYOUT_GPOS_PAIRPOS_HH + +#include "PairPosFormat1.hh" +#include "PairPosFormat2.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct PairPos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + PairPosFormat1_3 format1; + PairPosFormat2_4 format2; +#ifndef HB_NO_BEYOND_64K + PairPosFormat1_3 format3; + PairPosFormat2_4 format4; +#endif + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 3: return_trace (c->dispatch (u.format3, std::forward (ds)...)); + case 4: return_trace (c->dispatch (u.format4, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } +}; + +} +} +} + +#endif // OT_LAYOUT_GPOS_PAIRPOS_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat1.hh new file mode 100644 index 0000000000..714b4bec72 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat1.hh @@ -0,0 +1,217 @@ +#ifndef OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH + +#include "PairSet.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + + +template +struct PairPosFormat1_3 +{ + using PairSet = GPOS_impl::PairSet; + using PairValueRecord = GPOS_impl::PairValueRecord; + + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of subtable */ + ValueFormat valueFormat[2]; /* [0] Defines the types of data in + * ValueRecord1--for the first glyph + * in the pair--may be zero (0) */ + /* [1] Defines the types of data in + * ValueRecord2--for the second glyph + * in the pair--may be zero (0) */ + Array16Of> + pairSet; /* Array of PairSet tables + * ordered by Coverage Index */ + public: + DEFINE_SIZE_ARRAY (8 + Types::size, pairSet); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + + if (!c->check_struct (this)) return_trace (false); + + unsigned int len1 = valueFormat[0].get_len (); + unsigned int len2 = valueFormat[1].get_len (); + typename PairSet::sanitize_closure_t closure = + { + valueFormat, + len1, + PairSet::get_size (len1, len2) + }; + + return_trace (coverage.sanitize (c, this) && pairSet.sanitize (c, this, &closure)); + } + + bool intersects (const hb_set_t *glyphs) const + { + auto &cov = this+coverage; + + if (pairSet.len > glyphs->get_population () * hb_bit_storage ((unsigned) pairSet.len) / 4) + { + for (hb_codepoint_t g : glyphs->iter()) + { + unsigned i = cov.get_coverage (g); + if ((this+pairSet[i]).intersects (glyphs, valueFormat)) + return true; + } + return false; + } + + return + + hb_zip (cov, pairSet) + | hb_filter (*glyphs, hb_first) + | hb_map (hb_second) + | hb_map ([glyphs, this] (const typename Types::template OffsetTo &_) + { return (this+_).intersects (glyphs, valueFormat); }) + | hb_any + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + if ((!valueFormat[0].has_device ()) && (!valueFormat[1].has_device ())) return; + + auto it = + + hb_zip (this+coverage, pairSet) + | hb_filter (c->glyph_set, hb_first) + | hb_map (hb_second) + ; + + if (!it) return; + + it + | hb_map (hb_add (this)) + | hb_apply ([&] (const PairSet& _) { _.collect_variation_indices (c, valueFormat); }) + ; + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + unsigned int count = pairSet.len; + for (unsigned int i = 0; i < count; i++) + (this+pairSet[i]).collect_glyphs (c, valueFormat); + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.reset_fast (buffer->idx, 1); + unsigned unsafe_to; + if (unlikely (!skippy_iter.next (&unsafe_to))) + { + buffer->unsafe_to_concat (buffer->idx, unsafe_to); + return_trace (false); + } + + return_trace ((this+pairSet[index]).apply (c, valueFormat, skippy_iter.idx)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + out->valueFormat[0] = valueFormat[0]; + out->valueFormat[1] = valueFormat[1]; + if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING) + { + hb_pair_t newFormats = compute_effective_value_formats (glyphset); + out->valueFormat[0] = newFormats.first; + out->valueFormat[1] = newFormats.second; + } + + if (c->plan->all_axes_pinned) + { + out->valueFormat[0] = out->valueFormat[0].drop_device_table_flags (); + out->valueFormat[1] = out->valueFormat[1].drop_device_table_flags (); + } + + hb_sorted_vector_t new_coverage; + + + hb_zip (this+coverage, pairSet) + | hb_filter (glyphset, hb_first) + | hb_filter ([this, c, out] (const typename Types::template OffsetTo& _) + { + auto snap = c->serializer->snapshot (); + auto *o = out->pairSet.serialize_append (c->serializer); + if (unlikely (!o)) return false; + bool ret = o->serialize_subset (c, _, this, valueFormat, out->valueFormat); + if (!ret) + { + out->pairSet.pop (); + c->serializer->revert (snap); + } + return ret; + }, + hb_second) + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + + out->coverage.serialize_serialize (c->serializer, new_coverage.iter ()); + + return_trace (bool (new_coverage)); + } + + + hb_pair_t compute_effective_value_formats (const hb_set_t& glyphset) const + { + unsigned record_size = PairSet::get_size (valueFormat); + + unsigned format1 = 0; + unsigned format2 = 0; + for (const auto & _ : + + hb_zip (this+coverage, pairSet) + | hb_filter (glyphset, hb_first) + | hb_map (hb_second) + ) + { + const PairSet& set = (this + _); + const PairValueRecord *record = &set.firstPairValueRecord; + + unsigned count = set.len; + for (unsigned i = 0; i < count; i++) + { + if (record->intersects (glyphset)) + { + format1 = format1 | valueFormat[0].get_effective_format (record->get_values_1 ()); + format2 = format2 | valueFormat[1].get_effective_format (record->get_values_2 (valueFormat[0])); + } + record = &StructAtOffset (record, record_size); + } + + if (format1 == valueFormat[0] && format2 == valueFormat[1]) + break; + } + + return hb_pair (format1, format2); + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat2.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat2.hh new file mode 100644 index 0000000000..31329dfcb5 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PairPosFormat2.hh @@ -0,0 +1,356 @@ +#ifndef OT_LAYOUT_GPOS_PAIRPOSFORMAT2_HH +#define OT_LAYOUT_GPOS_PAIRPOSFORMAT2_HH + +#include "ValueFormat.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +template +struct PairPosFormat2_4 +{ + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of subtable */ + ValueFormat valueFormat1; /* ValueRecord definition--for the + * first glyph of the pair--may be zero + * (0) */ + ValueFormat valueFormat2; /* ValueRecord definition--for the + * second glyph of the pair--may be + * zero (0) */ + typename Types::template OffsetTo + classDef1; /* Offset to ClassDef table--from + * beginning of PairPos subtable--for + * the first glyph of the pair */ + typename Types::template OffsetTo + classDef2; /* Offset to ClassDef table--from + * beginning of PairPos subtable--for + * the second glyph of the pair */ + HBUINT16 class1Count; /* Number of classes in ClassDef1 + * table--includes Class0 */ + HBUINT16 class2Count; /* Number of classes in ClassDef2 + * table--includes Class0 */ + ValueRecord values; /* Matrix of value pairs: + * class1-major, class2-minor, + * Each entry has value1 and value2 */ + public: + DEFINE_SIZE_ARRAY (10 + 3 * Types::size, values); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!(c->check_struct (this) + && coverage.sanitize (c, this) + && classDef1.sanitize (c, this) + && classDef2.sanitize (c, this))) return_trace (false); + + unsigned int len1 = valueFormat1.get_len (); + unsigned int len2 = valueFormat2.get_len (); + unsigned int stride = HBUINT16::static_size * (len1 + len2); + unsigned int count = (unsigned int) class1Count * (unsigned int) class2Count; + return_trace (c->check_range ((const void *) values, + count, + stride) && + valueFormat1.sanitize_values_stride_unsafe (c, this, &values[0], count, stride) && + valueFormat2.sanitize_values_stride_unsafe (c, this, &values[len1], count, stride)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return (this+coverage).intersects (glyphs) && + (this+classDef2).intersects (glyphs); + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + if (!intersects (c->glyph_set)) return; + if ((!valueFormat1.has_device ()) && (!valueFormat2.has_device ())) return; + + hb_set_t klass1_glyphs, klass2_glyphs; + if (!(this+classDef1).collect_coverage (&klass1_glyphs)) return; + if (!(this+classDef2).collect_coverage (&klass2_glyphs)) return; + + hb_set_t class1_set, class2_set; + for (const unsigned cp : + c->glyph_set->iter () | hb_filter (this + coverage)) + { + if (!klass1_glyphs.has (cp)) class1_set.add (0); + else + { + unsigned klass1 = (this+classDef1).get (cp); + class1_set.add (klass1); + } + } + + class2_set.add (0); + for (const unsigned cp : + c->glyph_set->iter () | hb_filter (klass2_glyphs)) + { + unsigned klass2 = (this+classDef2).get (cp); + class2_set.add (klass2); + } + + if (class1_set.is_empty () + || class2_set.is_empty () + || (class2_set.get_population() == 1 && class2_set.has(0))) + return; + + unsigned len1 = valueFormat1.get_len (); + unsigned len2 = valueFormat2.get_len (); + const hb_array_t values_array = values.as_array ((unsigned)class1Count * (unsigned) class2Count * (len1 + len2)); + for (const unsigned class1_idx : class1_set.iter ()) + { + for (const unsigned class2_idx : class2_set.iter ()) + { + unsigned start_offset = (class1_idx * (unsigned) class2Count + class2_idx) * (len1 + len2); + if (valueFormat1.has_device ()) + valueFormat1.collect_variation_indices (c, this, values_array.sub_array (start_offset, len1)); + + if (valueFormat2.has_device ()) + valueFormat2.collect_variation_indices (c, this, values_array.sub_array (start_offset+len1, len2)); + } + } + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + if (unlikely (!(this+classDef2).collect_coverage (c->input))) return; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.reset_fast (buffer->idx, 1); + unsigned unsafe_to; + if (unlikely (!skippy_iter.next (&unsafe_to))) + { + buffer->unsafe_to_concat (buffer->idx, unsafe_to); + return_trace (false); + } + + unsigned int klass2 = (this+classDef2).get_class (buffer->info[skippy_iter.idx].codepoint); + if (!klass2) + { + buffer->unsafe_to_concat (buffer->idx, skippy_iter.idx + 1); + return_trace (false); + } + + unsigned int klass1 = (this+classDef1).get_class (buffer->cur().codepoint); + if (unlikely (klass1 >= class1Count || klass2 >= class2Count)) + { + buffer->unsafe_to_concat (buffer->idx, skippy_iter.idx + 1); + return_trace (false); + } + + unsigned int len1 = valueFormat1.get_len (); + unsigned int len2 = valueFormat2.get_len (); + unsigned int record_len = len1 + len2; + + const Value *v = &values[record_len * (klass1 * class2Count + klass2)]; + + bool applied_first = false, applied_second = false; + + + /* Isolate simple kerning and apply it half to each side. + * Results in better cursor positinoing / underline drawing. + * + * Disabled, because causes issues... :-( + * https://github.com/harfbuzz/harfbuzz/issues/3408 + * https://github.com/harfbuzz/harfbuzz/pull/3235#issuecomment-1029814978 + */ +#ifndef HB_SPLIT_KERN + if (false) +#endif + { + if (!len2) + { + const hb_direction_t dir = buffer->props.direction; + const bool horizontal = HB_DIRECTION_IS_HORIZONTAL (dir); + const bool backward = HB_DIRECTION_IS_BACKWARD (dir); + unsigned mask = horizontal ? ValueFormat::xAdvance : ValueFormat::yAdvance; + if (backward) + mask |= mask >> 2; /* Add eg. xPlacement in RTL. */ + /* Add Devices. */ + mask |= mask << 4; + + if (valueFormat1 & ~mask) + goto bail; + + /* Is simple kern. Apply value on an empty position slot, + * then split it between sides. */ + + hb_glyph_position_t pos{}; + if (valueFormat1.apply_value (c, this, v, pos)) + { + hb_position_t *src = &pos.x_advance; + hb_position_t *dst1 = &buffer->cur_pos().x_advance; + hb_position_t *dst2 = &buffer->pos[skippy_iter.idx].x_advance; + unsigned i = horizontal ? 0 : 1; + + hb_position_t kern = src[i]; + hb_position_t kern1 = kern >> 1; + hb_position_t kern2 = kern - kern1; + + if (!backward) + { + dst1[i] += kern1; + dst2[i] += kern2; + dst2[i + 2] += kern2; + } + else + { + dst1[i] += kern1; + dst1[i + 2] += src[i + 2] - kern2; + dst2[i] += kern2; + } + + applied_first = applied_second = kern != 0; + goto success; + } + goto boring; + } + } + bail: + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "try kerning glyphs at %u,%u", + c->buffer->idx, skippy_iter.idx); + } + + applied_first = len1 && valueFormat1.apply_value (c, this, v, buffer->cur_pos()); + applied_second = len2 && valueFormat2.apply_value (c, this, v + len1, buffer->pos[skippy_iter.idx]); + + if (applied_first || applied_second) + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "kerned glyphs at %u,%u", + c->buffer->idx, skippy_iter.idx); + } + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "tried kerning glyphs at %u,%u", + c->buffer->idx, skippy_iter.idx); + } + + success: + if (applied_first || applied_second) + buffer->unsafe_to_break (buffer->idx, skippy_iter.idx + 1); + else + boring: + buffer->unsafe_to_concat (buffer->idx, skippy_iter.idx + 1); + + if (len2) + { + skippy_iter.idx++; + // https://github.com/harfbuzz/harfbuzz/issues/3824 + // https://github.com/harfbuzz/harfbuzz/issues/3888#issuecomment-1326781116 + buffer->unsafe_to_break (buffer->idx, skippy_iter.idx + 1); + } + + buffer->idx = skippy_iter.idx; + + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_map_t klass1_map; + out->classDef1.serialize_subset (c, classDef1, this, &klass1_map, true, true, &(this + coverage)); + out->class1Count = klass1_map.get_population (); + + hb_map_t klass2_map; + out->classDef2.serialize_subset (c, classDef2, this, &klass2_map, true, false); + out->class2Count = klass2_map.get_population (); + + unsigned len1 = valueFormat1.get_len (); + unsigned len2 = valueFormat2.get_len (); + + hb_pair_t newFormats = hb_pair (valueFormat1, valueFormat2); + if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING) + newFormats = compute_effective_value_formats (klass1_map, klass2_map); + + out->valueFormat1 = newFormats.first; + out->valueFormat2 = newFormats.second; + + if (c->plan->all_axes_pinned) + { + out->valueFormat1 = out->valueFormat1.drop_device_table_flags (); + out->valueFormat2 = out->valueFormat2.drop_device_table_flags (); + } + + for (unsigned class1_idx : + hb_range ((unsigned) class1Count) | hb_filter (klass1_map)) + { + for (unsigned class2_idx : + hb_range ((unsigned) class2Count) | hb_filter (klass2_map)) + { + unsigned idx = (class1_idx * (unsigned) class2Count + class2_idx) * (len1 + len2); + valueFormat1.copy_values (c->serializer, out->valueFormat1, this, &values[idx], &c->plan->layout_variation_idx_delta_map); + valueFormat2.copy_values (c->serializer, out->valueFormat2, this, &values[idx + len1], &c->plan->layout_variation_idx_delta_map); + } + } + + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto it = + + hb_iter (this+coverage) + | hb_filter (glyphset) + | hb_map_retains_sorting (glyph_map) + ; + + out->coverage.serialize_serialize (c->serializer, it); + return_trace (out->class1Count && out->class2Count && bool (it)); + } + + + hb_pair_t compute_effective_value_formats (const hb_map_t& klass1_map, + const hb_map_t& klass2_map) const + { + unsigned len1 = valueFormat1.get_len (); + unsigned len2 = valueFormat2.get_len (); + unsigned record_size = len1 + len2; + + unsigned format1 = 0; + unsigned format2 = 0; + + for (unsigned class1_idx : + hb_range ((unsigned) class1Count) | hb_filter (klass1_map)) + { + for (unsigned class2_idx : + hb_range ((unsigned) class2Count) | hb_filter (klass2_map)) + { + unsigned idx = (class1_idx * (unsigned) class2Count + class2_idx) * record_size; + format1 = format1 | valueFormat1.get_effective_format (&values[idx]); + format2 = format2 | valueFormat2.get_effective_format (&values[idx + len1]); + } + + if (format1 == valueFormat1 && format2 == valueFormat2) + break; + } + + return hb_pair (format1, format2); + } +}; + +} +} +} + +#endif // OT_LAYOUT_GPOS_PAIRPOSFORMAT2_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PairSet.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PairSet.hh new file mode 100644 index 0000000000..9faff49909 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PairSet.hh @@ -0,0 +1,207 @@ +#ifndef OT_LAYOUT_GPOS_PAIRSET_HH +#define OT_LAYOUT_GPOS_PAIRSET_HH + +#include "PairValueRecord.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + + +template +struct PairSet +{ + template + friend struct PairPosFormat1_3; + + using PairValueRecord = GPOS_impl::PairValueRecord; + + protected: + HBUINT16 len; /* Number of PairValueRecords */ + PairValueRecord firstPairValueRecord; + /* Array of PairValueRecords--ordered + * by GlyphID of the second glyph */ + public: + DEFINE_SIZE_MIN (2); + + static unsigned get_size (unsigned len1, unsigned len2) + { + return Types::HBGlyphID::static_size + Value::static_size * (len1 + len2); + } + static unsigned get_size (const ValueFormat valueFormats[2]) + { + unsigned len1 = valueFormats[0].get_len (); + unsigned len2 = valueFormats[1].get_len (); + return get_size (len1, len2); + } + + struct sanitize_closure_t + { + const ValueFormat *valueFormats; + unsigned int len1; /* valueFormats[0].get_len() */ + unsigned int stride; /* bytes */ + }; + + bool sanitize (hb_sanitize_context_t *c, const sanitize_closure_t *closure) const + { + TRACE_SANITIZE (this); + if (!(c->check_struct (this) + && c->check_range (&firstPairValueRecord, + len, + closure->stride))) return_trace (false); + + unsigned int count = len; + const PairValueRecord *record = &firstPairValueRecord; + return_trace (closure->valueFormats[0].sanitize_values_stride_unsafe (c, this, &record->values[0], count, closure->stride) && + closure->valueFormats[1].sanitize_values_stride_unsafe (c, this, &record->values[closure->len1], count, closure->stride)); + } + + bool intersects (const hb_set_t *glyphs, + const ValueFormat *valueFormats) const + { + unsigned record_size = get_size (valueFormats); + + const PairValueRecord *record = &firstPairValueRecord; + unsigned int count = len; + for (unsigned int i = 0; i < count; i++) + { + if (glyphs->has (record->secondGlyph)) + return true; + record = &StructAtOffset (record, record_size); + } + return false; + } + + void collect_glyphs (hb_collect_glyphs_context_t *c, + const ValueFormat *valueFormats) const + { + unsigned record_size = get_size (valueFormats); + + const PairValueRecord *record = &firstPairValueRecord; + c->input->add_array (&record->secondGlyph, len, record_size); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + const ValueFormat *valueFormats) const + { + unsigned record_size = get_size (valueFormats); + + const PairValueRecord *record = &firstPairValueRecord; + unsigned count = len; + for (unsigned i = 0; i < count; i++) + { + if (c->glyph_set->has (record->secondGlyph)) + { record->collect_variation_indices (c, valueFormats, this); } + + record = &StructAtOffset (record, record_size); + } + } + + bool apply (hb_ot_apply_context_t *c, + const ValueFormat *valueFormats, + unsigned int pos) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int len1 = valueFormats[0].get_len (); + unsigned int len2 = valueFormats[1].get_len (); + unsigned record_size = get_size (len1, len2); + + const PairValueRecord *record = hb_bsearch (buffer->info[pos].codepoint, + &firstPairValueRecord, + len, + record_size); + if (record) + { + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "try kerning glyphs at %u,%u", + c->buffer->idx, pos); + } + + bool applied_first = len1 && valueFormats[0].apply_value (c, this, &record->values[0], buffer->cur_pos()); + bool applied_second = len2 && valueFormats[1].apply_value (c, this, &record->values[len1], buffer->pos[pos]); + + if (applied_first || applied_second) + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "kerned glyphs at %u,%u", + c->buffer->idx, pos); + } + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "tried kerning glyphs at %u,%u", + c->buffer->idx, pos); + } + + if (applied_first || applied_second) + buffer->unsafe_to_break (buffer->idx, pos + 1); + + if (len2) + { + pos++; + // https://github.com/harfbuzz/harfbuzz/issues/3824 + // https://github.com/harfbuzz/harfbuzz/issues/3888#issuecomment-1326781116 + buffer->unsafe_to_break (buffer->idx, pos + 1); + } + + buffer->idx = pos; + return_trace (true); + } + buffer->unsafe_to_concat (buffer->idx, pos + 1); + return_trace (false); + } + + bool subset (hb_subset_context_t *c, + const ValueFormat valueFormats[2], + const ValueFormat newFormats[2]) const + { + TRACE_SUBSET (this); + auto snap = c->serializer->snapshot (); + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->len = 0; + + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + unsigned len1 = valueFormats[0].get_len (); + unsigned len2 = valueFormats[1].get_len (); + unsigned record_size = get_size (len1, len2); + + typename PairValueRecord::context_t context = + { + this, + valueFormats, + newFormats, + len1, + &glyph_map, + &c->plan->layout_variation_idx_delta_map + }; + + const PairValueRecord *record = &firstPairValueRecord; + unsigned count = len, num = 0; + for (unsigned i = 0; i < count; i++) + { + if (glyphset.has (record->secondGlyph) + && record->subset (c, &context)) num++; + record = &StructAtOffset (record, record_size); + } + + out->len = num; + if (!num) c->serializer->revert (snap); + return_trace (num); + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_PAIRSET_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PairValueRecord.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PairValueRecord.hh new file mode 100644 index 0000000000..3222477764 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PairValueRecord.hh @@ -0,0 +1,99 @@ +#ifndef OT_LAYOUT_GPOS_PAIRVALUERECORD_HH +#define OT_LAYOUT_GPOS_PAIRVALUERECORD_HH + +#include "ValueFormat.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + + +template +struct PairValueRecord +{ + template + friend struct PairSet; + + protected: + typename Types::HBGlyphID + secondGlyph; /* GlyphID of second glyph in the + * pair--first glyph is listed in the + * Coverage table */ + ValueRecord values; /* Positioning data for the first glyph + * followed by for second glyph */ + public: + DEFINE_SIZE_ARRAY (Types::size, values); + + int cmp (hb_codepoint_t k) const + { return secondGlyph.cmp (k); } + + struct context_t + { + const void *base; + const ValueFormat *valueFormats; + const ValueFormat *newFormats; + unsigned len1; /* valueFormats[0].get_len() */ + const hb_map_t *glyph_map; + const hb_hashmap_t> *layout_variation_idx_delta_map; + }; + + bool subset (hb_subset_context_t *c, + context_t *closure) const + { + TRACE_SERIALIZE (this); + auto *s = c->serializer; + auto *out = s->start_embed (*this); + if (unlikely (!s->extend_min (out))) return_trace (false); + + out->secondGlyph = (*closure->glyph_map)[secondGlyph]; + + closure->valueFormats[0].copy_values (s, + closure->newFormats[0], + closure->base, &values[0], + closure->layout_variation_idx_delta_map); + closure->valueFormats[1].copy_values (s, + closure->newFormats[1], + closure->base, + &values[closure->len1], + closure->layout_variation_idx_delta_map); + + return_trace (true); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + const ValueFormat *valueFormats, + const void *base) const + { + unsigned record1_len = valueFormats[0].get_len (); + unsigned record2_len = valueFormats[1].get_len (); + const hb_array_t values_array = values.as_array (record1_len + record2_len); + + if (valueFormats[0].has_device ()) + valueFormats[0].collect_variation_indices (c, base, values_array.sub_array (0, record1_len)); + + if (valueFormats[1].has_device ()) + valueFormats[1].collect_variation_indices (c, base, values_array.sub_array (record1_len, record2_len)); + } + + bool intersects (const hb_set_t& glyphset) const + { + return glyphset.has(secondGlyph); + } + + const Value* get_values_1 () const + { + return &values[0]; + } + + const Value* get_values_2 (ValueFormat format1) const + { + return &values[format1.get_len ()]; + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_PAIRVALUERECORD_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookup.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookup.hh new file mode 100644 index 0000000000..c4e57bb543 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookup.hh @@ -0,0 +1,79 @@ +#ifndef OT_LAYOUT_GPOS_POSLOOKUP_HH +#define OT_LAYOUT_GPOS_POSLOOKUP_HH + +#include "PosLookupSubTable.hh" +#include "../../../hb-ot-layout-common.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct PosLookup : Lookup +{ + using SubTable = PosLookupSubTable; + + const SubTable& get_subtable (unsigned int i) const + { return Lookup::get_subtable (i); } + + bool is_reverse () const + { + return false; + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + return_trace (dispatch (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { + hb_intersects_context_t c (glyphs); + return dispatch (&c); + } + + hb_collect_glyphs_context_t::return_t collect_glyphs (hb_collect_glyphs_context_t *c) const + { return dispatch (c); } + + hb_closure_lookups_context_t::return_t closure_lookups (hb_closure_lookups_context_t *c, unsigned this_index) const + { + if (c->is_lookup_visited (this_index)) + return hb_closure_lookups_context_t::default_return_value (); + + c->set_lookup_visited (this_index); + if (!intersects (c->glyphs)) + { + c->set_lookup_inactive (this_index); + return hb_closure_lookups_context_t::default_return_value (); + } + + hb_closure_lookups_context_t::return_t ret = dispatch (c); + return ret; + } + + template + void collect_coverage (set_t *glyphs) const + { + hb_collect_coverage_context_t c (glyphs); + dispatch (&c); + } + + template + static typename context_t::return_t dispatch_recurse_func (context_t *c, unsigned int lookup_index); + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { return Lookup::dispatch (c, std::forward (ds)...); } + + bool subset (hb_subset_context_t *c) const + { return Lookup::subset (c); } + + bool sanitize (hb_sanitize_context_t *c) const + { return Lookup::sanitize (c); } +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_POSLOOKUP_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookupSubTable.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookupSubTable.hh new file mode 100644 index 0000000000..c19fbc323f --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/PosLookupSubTable.hh @@ -0,0 +1,79 @@ +#ifndef OT_LAYOUT_GPOS_POSLOOKUPSUBTABLE_HH +#define OT_LAYOUT_GPOS_POSLOOKUPSUBTABLE_HH + +#include "SinglePos.hh" +#include "PairPos.hh" +#include "CursivePos.hh" +#include "MarkBasePos.hh" +#include "MarkLigPos.hh" +#include "MarkMarkPos.hh" +#include "ContextPos.hh" +#include "ChainContextPos.hh" +#include "ExtensionPos.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct PosLookupSubTable +{ + friend struct ::OT::Lookup; + friend struct PosLookup; + + enum Type { + Single = 1, + Pair = 2, + Cursive = 3, + MarkBase = 4, + MarkLig = 5, + MarkMark = 6, + Context = 7, + ChainContext = 8, + Extension = 9 + }; + + template + typename context_t::return_t dispatch (context_t *c, unsigned int lookup_type, Ts&&... ds) const + { + TRACE_DISPATCH (this, lookup_type); + switch (lookup_type) { + case Single: return_trace (u.single.dispatch (c, std::forward (ds)...)); + case Pair: return_trace (u.pair.dispatch (c, std::forward (ds)...)); + case Cursive: return_trace (u.cursive.dispatch (c, std::forward (ds)...)); + case MarkBase: return_trace (u.markBase.dispatch (c, std::forward (ds)...)); + case MarkLig: return_trace (u.markLig.dispatch (c, std::forward (ds)...)); + case MarkMark: return_trace (u.markMark.dispatch (c, std::forward (ds)...)); + case Context: return_trace (u.context.dispatch (c, std::forward (ds)...)); + case ChainContext: return_trace (u.chainContext.dispatch (c, std::forward (ds)...)); + case Extension: return_trace (u.extension.dispatch (c, std::forward (ds)...)); + default: return_trace (c->default_return_value ()); + } + } + + bool intersects (const hb_set_t *glyphs, unsigned int lookup_type) const + { + hb_intersects_context_t c (glyphs); + return dispatch (&c, lookup_type); + } + + protected: + union { + SinglePos single; + PairPos pair; + CursivePos cursive; + MarkBasePos markBase; + MarkLigPos markLig; + MarkMarkPos markMark; + ContextPos context; + ChainContextPos chainContext; + ExtensionPos extension; + } u; + public: + DEFINE_SIZE_MIN (0); +}; + +} +} +} + +#endif /* HB_OT_LAYOUT_GPOS_POSLOOKUPSUBTABLE_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePos.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePos.hh new file mode 100644 index 0000000000..3af6c49965 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePos.hh @@ -0,0 +1,100 @@ +#ifndef OT_LAYOUT_GPOS_SINGLEPOS_HH +#define OT_LAYOUT_GPOS_SINGLEPOS_HH + +#include "SinglePosFormat1.hh" +#include "SinglePosFormat2.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct SinglePos +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + SinglePosFormat1 format1; + SinglePosFormat2 format2; + } u; + + public: + template + unsigned get_format (Iterator glyph_val_iter_pairs) + { + hb_array_t first_val_iter = hb_second (*glyph_val_iter_pairs); + + for (const auto iter : glyph_val_iter_pairs) + for (const auto _ : hb_zip (iter.second, first_val_iter)) + if (_.first != _.second) + return 2; + + return 1; + } + + template + void serialize (hb_serialize_context_t *c, + const SrcLookup* src, + Iterator glyph_val_iter_pairs, + const hb_hashmap_t> *layout_variation_idx_delta_map, + bool all_axes_pinned) + { + if (unlikely (!c->extend_min (u.format))) return; + unsigned format = 2; + ValueFormat new_format = src->get_value_format (); + + if (all_axes_pinned) + new_format = new_format.drop_device_table_flags (); + + if (glyph_val_iter_pairs) + format = get_format (glyph_val_iter_pairs); + + u.format = format; + switch (u.format) { + case 1: u.format1.serialize (c, + src, + glyph_val_iter_pairs, + new_format, + layout_variation_idx_delta_map); + return; + case 2: u.format2.serialize (c, + src, + glyph_val_iter_pairs, + new_format, + layout_variation_idx_delta_map); + return; + default:return; + } + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } +}; + + +template +static void +SinglePos_serialize (hb_serialize_context_t *c, + const SrcLookup *src, + Iterator it, + const hb_hashmap_t> *layout_variation_idx_delta_map, + bool all_axes_pinned) +{ c->start_embed ()->serialize (c, src, it, layout_variation_idx_delta_map, all_axes_pinned); } + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_SINGLEPOS_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat1.hh new file mode 100644 index 0000000000..623e4e66b2 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat1.hh @@ -0,0 +1,164 @@ +#ifndef OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH +#define OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH + +#include "Common.hh" +#include "ValueFormat.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct SinglePosFormat1 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + Offset16To + coverage; /* Offset to Coverage table--from + * beginning of subtable */ + ValueFormat valueFormat; /* Defines the types of data in the + * ValueRecord */ + ValueRecord values; /* Defines positioning + * value(s)--applied to all glyphs in + * the Coverage table */ + public: + DEFINE_SIZE_ARRAY (6, values); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + coverage.sanitize (c, this) && + /* The coverage table may use a range to represent a set + * of glyphs, which means a small number of bytes can + * generate a large glyph set. Manually modify the + * sanitizer max ops to take this into account. + * + * Note: This check *must* be right after coverage sanitize. */ + c->check_ops ((this + coverage).get_population () >> 1) && + valueFormat.sanitize_value (c, this, values)); + + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + if (!valueFormat.has_device ()) return; + + hb_set_t intersection; + (this+coverage).intersect_set (*c->glyph_set, intersection); + if (!intersection) return; + + valueFormat.collect_variation_indices (c, this, values.as_array (valueFormat.get_len ())); + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { if (unlikely (!(this+coverage).collect_coverage (c->input))) return; } + + const Coverage &get_coverage () const { return this+coverage; } + + ValueFormat get_value_format () const { return valueFormat; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "positioning glyph at %u", + c->buffer->idx); + } + + valueFormat.apply_value (c, this, values, buffer->cur_pos()); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "positioned glyph at %u", + c->buffer->idx); + } + + buffer->idx++; + return_trace (true); + } + + bool + position_single (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t gid, + hb_glyph_position_t &pos) const + { + unsigned int index = (this+coverage).get_coverage (gid); + if (likely (index == NOT_COVERED)) return false; + + /* This is ugly... */ + hb_buffer_t buffer; + buffer.props.direction = direction; + OT::hb_ot_apply_context_t c (1, font, &buffer); + + valueFormat.apply_value (&c, this, values, pos); + return true; + } + + template + void serialize (hb_serialize_context_t *c, + const SrcLookup *src, + Iterator it, + ValueFormat newFormat, + const hb_hashmap_t> *layout_variation_idx_delta_map) + { + if (unlikely (!c->extend_min (this))) return; + if (unlikely (!c->check_assign (valueFormat, + newFormat, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) return; + + for (const hb_array_t& _ : + it | hb_map (hb_second)) + { + src->get_value_format ().copy_values (c, newFormat, src, &_, layout_variation_idx_delta_map); + // Only serialize the first entry in the iterator, the rest are assumed to + // be the same. + break; + } + + auto glyphs = + + it + | hb_map_retains_sorting (hb_first) + ; + + coverage.serialize_serialize (c, glyphs); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + hb_set_t intersection; + (this+coverage).intersect_set (glyphset, intersection); + + auto it = + + hb_iter (intersection) + | hb_map_retains_sorting (glyph_map) + | hb_zip (hb_repeat (values.as_array (valueFormat.get_len ()))) + ; + + bool ret = bool (it); + SinglePos_serialize (c->serializer, this, it, &c->plan->layout_variation_idx_delta_map, c->plan->all_axes_pinned); + return_trace (ret); + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat2.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat2.hh new file mode 100644 index 0000000000..e8f2d7c2c6 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat2.hh @@ -0,0 +1,176 @@ +#ifndef OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH +#define OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct SinglePosFormat2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + Offset16To + coverage; /* Offset to Coverage table--from + * beginning of subtable */ + ValueFormat valueFormat; /* Defines the types of data in the + * ValueRecord */ + HBUINT16 valueCount; /* Number of ValueRecords */ + ValueRecord values; /* Array of ValueRecords--positioning + * values applied to glyphs */ + public: + DEFINE_SIZE_ARRAY (8, values); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + coverage.sanitize (c, this) && + valueFormat.sanitize_values (c, this, values, valueCount)); + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + if (!valueFormat.has_device ()) return; + + auto it = + + hb_zip (this+coverage, hb_range ((unsigned) valueCount)) + | hb_filter (c->glyph_set, hb_first) + ; + + if (!it) return; + + unsigned sub_length = valueFormat.get_len (); + const hb_array_t values_array = values.as_array (valueCount * sub_length); + + for (unsigned i : + it + | hb_map (hb_second)) + valueFormat.collect_variation_indices (c, this, values_array.sub_array (i * sub_length, sub_length)); + + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { if (unlikely (!(this+coverage).collect_coverage (c->input))) return; } + + const Coverage &get_coverage () const { return this+coverage; } + + ValueFormat get_value_format () const { return valueFormat; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_buffer_t *buffer = c->buffer; + unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + if (unlikely (index >= valueCount)) return_trace (false); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "positioning glyph at %u", + c->buffer->idx); + } + + valueFormat.apply_value (c, this, + &values[index * valueFormat.get_len ()], + buffer->cur_pos()); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "positioned glyph at %u", + c->buffer->idx); + } + + buffer->idx++; + return_trace (true); + } + + bool + position_single (hb_font_t *font, + hb_direction_t direction, + hb_codepoint_t gid, + hb_glyph_position_t &pos) const + { + unsigned int index = (this+coverage).get_coverage (gid); + if (likely (index == NOT_COVERED)) return false; + if (unlikely (index >= valueCount)) return false; + + /* This is ugly... */ + hb_buffer_t buffer; + buffer.props.direction = direction; + OT::hb_ot_apply_context_t c (1, font, &buffer); + + valueFormat.apply_value (&c, this, + &values[index * valueFormat.get_len ()], + pos); + return true; + } + + + template + void serialize (hb_serialize_context_t *c, + const SrcLookup *src, + Iterator it, + ValueFormat newFormat, + const hb_hashmap_t> *layout_variation_idx_delta_map) + { + auto out = c->extend_min (this); + if (unlikely (!out)) return; + if (unlikely (!c->check_assign (valueFormat, newFormat, HB_SERIALIZE_ERROR_INT_OVERFLOW))) return; + if (unlikely (!c->check_assign (valueCount, it.len (), HB_SERIALIZE_ERROR_ARRAY_OVERFLOW))) return; + + + it + | hb_map (hb_second) + | hb_apply ([&] (hb_array_t _) + { src->get_value_format ().copy_values (c, newFormat, src, &_, layout_variation_idx_delta_map); }) + ; + + auto glyphs = + + it + | hb_map_retains_sorting (hb_first) + ; + + coverage.serialize_serialize (c, glyphs); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + unsigned sub_length = valueFormat.get_len (); + auto values_array = values.as_array (valueCount * sub_length); + + auto it = + + hb_zip (this+coverage, hb_range ((unsigned) valueCount)) + | hb_filter (glyphset, hb_first) + | hb_map_retains_sorting ([&] (const hb_pair_t& _) + { + return hb_pair (glyph_map[_.first], + values_array.sub_array (_.second * sub_length, + sub_length)); + }) + ; + + bool ret = bool (it); + SinglePos_serialize (c->serializer, this, it, &c->plan->layout_variation_idx_delta_map, c->plan->all_axes_pinned); + return_trace (ret); + } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/ValueFormat.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/ValueFormat.hh new file mode 100644 index 0000000000..1aa451abcc --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/ValueFormat.hh @@ -0,0 +1,394 @@ +#ifndef OT_LAYOUT_GPOS_VALUEFORMAT_HH +#define OT_LAYOUT_GPOS_VALUEFORMAT_HH + +#include "../../../hb-ot-layout-gsubgpos.hh" + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +typedef HBUINT16 Value; + +typedef UnsizedArrayOf ValueRecord; + +struct ValueFormat : HBUINT16 +{ + enum Flags { + xPlacement = 0x0001u, /* Includes horizontal adjustment for placement */ + yPlacement = 0x0002u, /* Includes vertical adjustment for placement */ + xAdvance = 0x0004u, /* Includes horizontal adjustment for advance */ + yAdvance = 0x0008u, /* Includes vertical adjustment for advance */ + xPlaDevice = 0x0010u, /* Includes horizontal Device table for placement */ + yPlaDevice = 0x0020u, /* Includes vertical Device table for placement */ + xAdvDevice = 0x0040u, /* Includes horizontal Device table for advance */ + yAdvDevice = 0x0080u, /* Includes vertical Device table for advance */ + ignored = 0x0F00u, /* Was used in TrueType Open for MM fonts */ + reserved = 0xF000u, /* For future use */ + + devices = 0x00F0u /* Mask for having any Device table */ + }; + +/* All fields are options. Only those available advance the value pointer. */ +#if 0 + HBINT16 xPlacement; /* Horizontal adjustment for + * placement--in design units */ + HBINT16 yPlacement; /* Vertical adjustment for + * placement--in design units */ + HBINT16 xAdvance; /* Horizontal adjustment for + * advance--in design units (only used + * for horizontal writing) */ + HBINT16 yAdvance; /* Vertical adjustment for advance--in + * design units (only used for vertical + * writing) */ + Offset16To xPlaDevice; /* Offset to Device table for + * horizontal placement--measured from + * beginning of PosTable (may be NULL) */ + Offset16To yPlaDevice; /* Offset to Device table for vertical + * placement--measured from beginning + * of PosTable (may be NULL) */ + Offset16To xAdvDevice; /* Offset to Device table for + * horizontal advance--measured from + * beginning of PosTable (may be NULL) */ + Offset16To yAdvDevice; /* Offset to Device table for vertical + * advance--measured from beginning of + * PosTable (may be NULL) */ +#endif + + IntType& operator = (uint16_t i) { v = i; return *this; } + + unsigned int get_len () const { return hb_popcount ((unsigned int) *this); } + unsigned int get_size () const { return get_len () * Value::static_size; } + + hb_vector_t get_device_table_indices () const { + unsigned i = 0; + hb_vector_t result; + unsigned format = *this; + + if (format & xPlacement) i++; + if (format & yPlacement) i++; + if (format & xAdvance) i++; + if (format & yAdvance) i++; + + if (format & xPlaDevice) result.push (i++); + if (format & yPlaDevice) result.push (i++); + if (format & xAdvDevice) result.push (i++); + if (format & yAdvDevice) result.push (i++); + + return result; + } + + bool apply_value (hb_ot_apply_context_t *c, + const void *base, + const Value *values, + hb_glyph_position_t &glyph_pos) const + { + bool ret = false; + unsigned int format = *this; + if (!format) return ret; + + hb_font_t *font = c->font; + bool horizontal = +#ifndef HB_NO_VERTICAL + HB_DIRECTION_IS_HORIZONTAL (c->direction) +#else + true +#endif + ; + + if (format & xPlacement) glyph_pos.x_offset += font->em_scale_x (get_short (values++, &ret)); + if (format & yPlacement) glyph_pos.y_offset += font->em_scale_y (get_short (values++, &ret)); + if (format & xAdvance) { + if (likely (horizontal)) glyph_pos.x_advance += font->em_scale_x (get_short (values, &ret)); + values++; + } + /* y_advance values grow downward but font-space grows upward, hence negation */ + if (format & yAdvance) { + if (unlikely (!horizontal)) glyph_pos.y_advance -= font->em_scale_y (get_short (values, &ret)); + values++; + } + + if (!has_device ()) return ret; + + bool use_x_device = font->x_ppem || font->num_coords; + bool use_y_device = font->y_ppem || font->num_coords; + + if (!use_x_device && !use_y_device) return ret; + + const VariationStore &store = c->var_store; + auto *cache = c->var_store_cache; + + /* pixel -> fractional pixel */ + if (format & xPlaDevice) { + if (use_x_device) glyph_pos.x_offset += (base + get_device (values, &ret)).get_x_delta (font, store, cache); + values++; + } + if (format & yPlaDevice) { + if (use_y_device) glyph_pos.y_offset += (base + get_device (values, &ret)).get_y_delta (font, store, cache); + values++; + } + if (format & xAdvDevice) { + if (horizontal && use_x_device) glyph_pos.x_advance += (base + get_device (values, &ret)).get_x_delta (font, store, cache); + values++; + } + if (format & yAdvDevice) { + /* y_advance values grow downward but font-space grows upward, hence negation */ + if (!horizontal && use_y_device) glyph_pos.y_advance -= (base + get_device (values, &ret)).get_y_delta (font, store, cache); + values++; + } + return ret; + } + + unsigned int get_effective_format (const Value *values) const + { + unsigned int format = *this; + for (unsigned flag = xPlacement; flag <= yAdvDevice; flag = flag << 1) { + if (format & flag) should_drop (*values++, (Flags) flag, &format); + } + + return format; + } + + template + unsigned int get_effective_format (Iterator it) const { + unsigned int new_format = 0; + + for (const hb_array_t& values : it) + new_format = new_format | get_effective_format (&values); + + return new_format; + } + + void copy_values (hb_serialize_context_t *c, + unsigned int new_format, + const void *base, + const Value *values, + const hb_hashmap_t> *layout_variation_idx_delta_map) const + { + unsigned int format = *this; + if (!format) return; + + HBINT16 *x_placement = nullptr, *y_placement = nullptr, *x_adv = nullptr, *y_adv = nullptr; + if (format & xPlacement) x_placement = copy_value (c, new_format, xPlacement, *values++); + if (format & yPlacement) y_placement = copy_value (c, new_format, yPlacement, *values++); + if (format & xAdvance) x_adv = copy_value (c, new_format, xAdvance, *values++); + if (format & yAdvance) y_adv = copy_value (c, new_format, yAdvance, *values++); + + if (format & xPlaDevice) + { + add_delta_to_value (x_placement, base, values, layout_variation_idx_delta_map); + copy_device (c, base, values++, layout_variation_idx_delta_map, new_format, xPlaDevice); + } + + if (format & yPlaDevice) + { + add_delta_to_value (y_placement, base, values, layout_variation_idx_delta_map); + copy_device (c, base, values++, layout_variation_idx_delta_map, new_format, yPlaDevice); + } + + if (format & xAdvDevice) + { + add_delta_to_value (x_adv, base, values, layout_variation_idx_delta_map); + copy_device (c, base, values++, layout_variation_idx_delta_map, new_format, xAdvDevice); + } + + if (format & yAdvDevice) + { + add_delta_to_value (y_adv, base, values, layout_variation_idx_delta_map); + copy_device (c, base, values++, layout_variation_idx_delta_map, new_format, yAdvDevice); + } + } + + HBINT16* copy_value (hb_serialize_context_t *c, + unsigned int new_format, + Flags flag, + Value value) const + { + // Filter by new format. + if (!(new_format & flag)) return nullptr; + return reinterpret_cast (c->copy (value)); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c, + const void *base, + const hb_array_t& values) const + { + unsigned format = *this; + unsigned i = 0; + if (format & xPlacement) i++; + if (format & yPlacement) i++; + if (format & xAdvance) i++; + if (format & yAdvance) i++; + if (format & xPlaDevice) + { + (base + get_device (&(values[i]))).collect_variation_indices (c); + i++; + } + + if (format & ValueFormat::yPlaDevice) + { + (base + get_device (&(values[i]))).collect_variation_indices (c); + i++; + } + + if (format & ValueFormat::xAdvDevice) + { + + (base + get_device (&(values[i]))).collect_variation_indices (c); + i++; + } + + if (format & ValueFormat::yAdvDevice) + { + + (base + get_device (&(values[i]))).collect_variation_indices (c); + i++; + } + } + + unsigned drop_device_table_flags () const + { + unsigned format = *this; + for (unsigned flag = xPlaDevice; flag <= yAdvDevice; flag = flag << 1) + format = format & ~flag; + + return format; + } + + private: + bool sanitize_value_devices (hb_sanitize_context_t *c, const void *base, const Value *values) const + { + unsigned int format = *this; + + if (format & xPlacement) values++; + if (format & yPlacement) values++; + if (format & xAdvance) values++; + if (format & yAdvance) values++; + + if ((format & xPlaDevice) && !get_device (values++).sanitize (c, base)) return false; + if ((format & yPlaDevice) && !get_device (values++).sanitize (c, base)) return false; + if ((format & xAdvDevice) && !get_device (values++).sanitize (c, base)) return false; + if ((format & yAdvDevice) && !get_device (values++).sanitize (c, base)) return false; + + return true; + } + + static inline Offset16To& get_device (Value* value) + { + return *static_cast *> (value); + } + static inline const Offset16To& get_device (const Value* value, bool *worked=nullptr) + { + if (worked) *worked |= bool (*value); + return *static_cast *> (value); + } + + void add_delta_to_value (HBINT16 *value, + const void *base, + const Value *src_value, + const hb_hashmap_t> *layout_variation_idx_delta_map) const + { + if (!value) return; + unsigned varidx = (base + get_device (src_value)).get_variation_index (); + hb_pair_t *varidx_delta; + if (!layout_variation_idx_delta_map->has (varidx, &varidx_delta)) return; + + *value += hb_second (*varidx_delta); + } + + bool copy_device (hb_serialize_context_t *c, const void *base, + const Value *src_value, + const hb_hashmap_t> *layout_variation_idx_delta_map, + unsigned int new_format, Flags flag) const + { + // Filter by new format. + if (!(new_format & flag)) return true; + + Value *dst_value = c->copy (*src_value); + + if (!dst_value) return false; + if (*dst_value == 0) return true; + + *dst_value = 0; + c->push (); + if ((base + get_device (src_value)).copy (c, layout_variation_idx_delta_map)) + { + c->add_link (*dst_value, c->pop_pack ()); + return true; + } + else + { + c->pop_discard (); + return false; + } + } + + static inline const HBINT16& get_short (const Value* value, bool *worked=nullptr) + { + if (worked) *worked |= bool (*value); + return *reinterpret_cast (value); + } + + public: + + bool has_device () const + { + unsigned int format = *this; + return (format & devices) != 0; + } + + bool sanitize_value (hb_sanitize_context_t *c, const void *base, const Value *values) const + { + TRACE_SANITIZE (this); + return_trace (c->check_range (values, get_size ()) && (!has_device () || sanitize_value_devices (c, base, values))); + } + + bool sanitize_values (hb_sanitize_context_t *c, const void *base, const Value *values, unsigned int count) const + { + TRACE_SANITIZE (this); + unsigned int len = get_len (); + + if (!c->check_range (values, count, get_size ())) return_trace (false); + + if (!has_device ()) return_trace (true); + + for (unsigned int i = 0; i < count; i++) { + if (!sanitize_value_devices (c, base, values)) + return_trace (false); + values += len; + } + + return_trace (true); + } + + /* Just sanitize referenced Device tables. Doesn't check the values themselves. */ + bool sanitize_values_stride_unsafe (hb_sanitize_context_t *c, const void *base, const Value *values, unsigned int count, unsigned int stride) const + { + TRACE_SANITIZE (this); + + if (!has_device ()) return_trace (true); + + for (unsigned int i = 0; i < count; i++) { + if (!sanitize_value_devices (c, base, values)) + return_trace (false); + values = &StructAtOffset (values, stride); + } + + return_trace (true); + } + + private: + + void should_drop (Value value, Flags flag, unsigned int* format) const + { + if (value) return; + *format = *format & ~flag; + } + +}; + +} +} +} + +#endif // #ifndef OT_LAYOUT_GPOS_VALUEFORMAT_HH diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSet.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSet.hh new file mode 100644 index 0000000000..b4466119be --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSet.hh @@ -0,0 +1,126 @@ +#ifndef OT_LAYOUT_GSUB_ALTERNATESET_HH +#define OT_LAYOUT_GSUB_ALTERNATESET_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct AlternateSet +{ + protected: + Array16Of + alternates; /* Array of alternate GlyphIDs--in + * arbitrary order */ + public: + DEFINE_SIZE_ARRAY (2, alternates); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (alternates.sanitize (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { return hb_any (alternates, glyphs); } + + void closure (hb_closure_context_t *c) const + { c->output->add_array (alternates.arrayZ, alternates.len); } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { c->output->add_array (alternates.arrayZ, alternates.len); } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + unsigned int count = alternates.len; + + if (unlikely (!count)) return_trace (false); + + hb_mask_t glyph_mask = c->buffer->cur().mask; + hb_mask_t lookup_mask = c->lookup_mask; + + /* Note: This breaks badly if two features enabled this lookup together. */ + unsigned int shift = hb_ctz (lookup_mask); + unsigned int alt_index = ((lookup_mask & glyph_mask) >> shift); + + /* If alt_index is MAX_VALUE, randomize feature if it is the rand feature. */ + if (alt_index == HB_OT_MAP_MAX_VALUE && c->random) + { + /* Maybe we can do better than unsafe-to-break all; but since we are + * changing random state, it would be hard to track that. Good 'nough. */ + c->buffer->unsafe_to_break (0, c->buffer->len); + alt_index = c->random_number () % count + 1; + } + + if (unlikely (alt_index > count || alt_index == 0)) return_trace (false); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (alternate substitution)", + c->buffer->idx); + } + + c->replace_glyph (alternates[alt_index - 1]); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (alternate substitution)", + c->buffer->idx - 1u); + } + + return_trace (true); + } + + unsigned + get_alternates (unsigned start_offset, + unsigned *alternate_count /* IN/OUT. May be NULL. */, + hb_codepoint_t *alternate_glyphs /* OUT. May be NULL. */) const + { + if (alternates.len && alternate_count) + { + + alternates.as_array ().sub_array (start_offset, alternate_count) + | hb_sink (hb_array (alternate_glyphs, *alternate_count)) + ; + } + return alternates.len; + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator alts) + { + TRACE_SERIALIZE (this); + return_trace (alternates.serialize (c, alts)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto it = + + hb_iter (alternates) + | hb_filter (glyphset) + | hb_map (glyph_map) + ; + + auto *out = c->serializer->start_embed (*this); + return_trace (out->serialize (c->serializer, it) && + out->alternates); + } +}; + +} +} +} + + +#endif /* OT_LAYOUT_GSUB_ALTERNATESET_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubst.hh new file mode 100644 index 0000000000..04a052a783 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubst.hh @@ -0,0 +1,62 @@ +#ifndef OT_LAYOUT_GSUB_ALTERNATESUBST_HH +#define OT_LAYOUT_GSUB_ALTERNATESUBST_HH + +#include "AlternateSubstFormat1.hh" +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct AlternateSubst +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + AlternateSubstFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + AlternateSubstFormat1_2 format2; +#endif + } u; + public: + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } + + /* TODO This function is unused and not updated to 24bit GIDs. Should be done by using + * iterators. While at it perhaps using iterator of arrays of hb_codepoint_t instead. */ + bool serialize (hb_serialize_context_t *c, + hb_sorted_array_t glyphs, + hb_array_t alternate_len_list, + hb_array_t alternate_glyphs_list) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (u.format))) return_trace (false); + unsigned int format = 1; + u.format = format; + switch (u.format) { + case 1: return_trace (u.format1.serialize (c, glyphs, alternate_len_list, alternate_glyphs_list)); + default:return_trace (false); + } + } + + /* TODO subset() should choose format. */ + +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_ALTERNATESUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubstFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubstFormat1.hh new file mode 100644 index 0000000000..adec65d586 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/AlternateSubstFormat1.hh @@ -0,0 +1,128 @@ +#ifndef OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH +#define OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH + +#include "AlternateSet.hh" +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct AlternateSubstFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of Substitution table */ + Array16Of>> + alternateSet; /* Array of AlternateSet tables + * ordered by Coverage Index */ + public: + DEFINE_SIZE_ARRAY (2 + 2 * Types::size, alternateSet); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && alternateSet.sanitize (c, this)); + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + bool may_have_non_1to1 () const + { return false; } + + void closure (hb_closure_context_t *c) const + { + + hb_zip (this+coverage, alternateSet) + | hb_filter (c->parent_active_glyphs (), hb_first) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const AlternateSet &_) { _.closure (c); }) + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + + hb_zip (this+coverage, alternateSet) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const AlternateSet &_) { _.collect_glyphs (c); }) + ; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; } + + unsigned + get_glyph_alternates (hb_codepoint_t gid, + unsigned start_offset, + unsigned *alternate_count /* IN/OUT. May be NULL. */, + hb_codepoint_t *alternate_glyphs /* OUT. May be NULL. */) const + { return (this+alternateSet[(this+coverage).get_coverage (gid)]) + .get_alternates (start_offset, alternate_count, alternate_glyphs); } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + + unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + return_trace ((this+alternateSet[index]).apply (c)); + } + + bool serialize (hb_serialize_context_t *c, + hb_sorted_array_t glyphs, + hb_array_t alternate_len_list, + hb_array_t alternate_glyphs_list) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + if (unlikely (!alternateSet.serialize (c, glyphs.length))) return_trace (false); + for (unsigned int i = 0; i < glyphs.length; i++) + { + unsigned int alternate_len = alternate_len_list[i]; + if (unlikely (!alternateSet[i] + .serialize_serialize (c, alternate_glyphs_list.sub_array (0, alternate_len)))) + return_trace (false); + alternate_glyphs_list += alternate_len; + } + return_trace (coverage.serialize_serialize (c, glyphs)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_sorted_vector_t new_coverage; + + hb_zip (this+coverage, alternateSet) + | hb_filter (glyphset, hb_first) + | hb_filter (subset_offset_array (c, out->alternateSet, this), hb_second) + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + out->coverage.serialize_serialize (c->serializer, new_coverage.iter ()); + return_trace (bool (new_coverage)); + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/ChainContextSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/ChainContextSubst.hh new file mode 100644 index 0000000000..08fd779f73 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/ChainContextSubst.hh @@ -0,0 +1,18 @@ +#ifndef OT_LAYOUT_GSUB_CHAINCONTEXTSUBST_HH +#define OT_LAYOUT_GSUB_CHAINCONTEXTSUBST_HH + +// TODO(garretrieger): move to new layout. +#include "../../../hb-ot-layout-gsubgpos.hh" +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct ChainContextSubst : ChainContext {}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_CHAINCONTEXTSUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/Common.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/Common.hh new file mode 100644 index 0000000000..968bba0481 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/Common.hh @@ -0,0 +1,21 @@ +#ifndef OT_LAYOUT_GSUB_COMMON_HH +#define OT_LAYOUT_GSUB_COMMON_HH + +#include "../../../hb-serialize.hh" +#include "../../../hb-ot-layout-gsubgpos.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +typedef hb_pair_t hb_codepoint_pair_t; + +template +static void SingleSubst_serialize (hb_serialize_context_t *c, + Iterator it); + +} +} +} + +#endif /* OT_LAYOUT_GSUB_COMMON_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/ContextSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/ContextSubst.hh new file mode 100644 index 0000000000..9f8cb46b5e --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/ContextSubst.hh @@ -0,0 +1,18 @@ +#ifndef OT_LAYOUT_GSUB_CONTEXTSUBST_HH +#define OT_LAYOUT_GSUB_CONTEXTSUBST_HH + +// TODO(garretrieger): move to new layout. +#include "../../../hb-ot-layout-gsubgpos.hh" +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct ContextSubst : Context {}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_CONTEXTSUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/ExtensionSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/ExtensionSubst.hh new file mode 100644 index 0000000000..831a7dfa2d --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/ExtensionSubst.hh @@ -0,0 +1,22 @@ +#ifndef OT_LAYOUT_GSUB_EXTENSIONSUBST_HH +#define OT_LAYOUT_GSUB_EXTENSIONSUBST_HH + +// TODO(garretrieger): move to new layout. +#include "../../../hb-ot-layout-gsubgpos.hh" +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct ExtensionSubst : Extension +{ + typedef struct SubstLookupSubTable SubTable; + bool is_reverse () const; +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_EXTENSIONSUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/GSUB.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/GSUB.hh new file mode 100644 index 0000000000..900cf603e4 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/GSUB.hh @@ -0,0 +1,61 @@ +#ifndef OT_LAYOUT_GSUB_GSUB_HH +#define OT_LAYOUT_GSUB_GSUB_HH + +#include "../../../hb-ot-layout-gsubgpos.hh" +#include "Common.hh" +#include "SubstLookup.hh" + +namespace OT { + +using Layout::GSUB_impl::SubstLookup; + +namespace Layout { + +/* + * GSUB -- Glyph Substitution + * https://docs.microsoft.com/en-us/typography/opentype/spec/gsub + */ + +struct GSUB : GSUBGPOS +{ + using Lookup = SubstLookup; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_GSUB; + + const SubstLookup& get_lookup (unsigned int i) const + { return static_cast (GSUBGPOS::get_lookup (i)); } + + bool subset (hb_subset_context_t *c) const + { + hb_subset_layout_context_t l (c, tableTag); + return GSUBGPOS::subset (&l); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (GSUBGPOS::sanitize (c)); + } + + HB_INTERNAL bool is_blocklisted (hb_blob_t *blob, + hb_face_t *face) const; + + void closure_lookups (hb_face_t *face, + const hb_set_t *glyphs, + hb_set_t *lookup_indexes /* IN/OUT */) const + { GSUBGPOS::closure_lookups (face, glyphs, lookup_indexes); } + + typedef GSUBGPOS::accelerator_t accelerator_t; +}; + + +} + +struct GSUB_accelerator_t : Layout::GSUB::accelerator_t { + GSUB_accelerator_t (hb_face_t *face) : Layout::GSUB::accelerator_t (face) {} +}; + + +} + +#endif /* OT_LAYOUT_GSUB_GSUB_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/Ligature.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/Ligature.hh new file mode 100644 index 0000000000..8674a52fb5 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/Ligature.hh @@ -0,0 +1,190 @@ +#ifndef OT_LAYOUT_GSUB_LIGATURE_HH +#define OT_LAYOUT_GSUB_LIGATURE_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct Ligature +{ + public: + typename Types::HBGlyphID + ligGlyph; /* GlyphID of ligature to substitute */ + HeadlessArrayOf + component; /* Array of component GlyphIDs--start + * with the second component--ordered + * in writing direction */ + public: + DEFINE_SIZE_ARRAY (Types::size + 2, component); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (ligGlyph.sanitize (c) && component.sanitize (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { return hb_all (component, glyphs); } + + bool intersects_lig_glyph (const hb_set_t *glyphs) const + { return glyphs->has(ligGlyph); } + + void closure (hb_closure_context_t *c) const + { + if (!intersects (c->glyphs)) return; + c->output->add (ligGlyph); + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + c->input->add_array (component.arrayZ, component.get_length ()); + c->output->add (ligGlyph); + } + + bool would_apply (hb_would_apply_context_t *c) const + { + if (c->len != component.lenP1) + return false; + + for (unsigned int i = 1; i < c->len; i++) + if (likely (c->glyphs[i] != component[i])) + return false; + + return true; + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + unsigned int count = component.lenP1; + + if (unlikely (!count)) return_trace (false); + + /* Special-case to make it in-place and not consider this + * as a "ligated" substitution. */ + if (unlikely (count == 1)) + { + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (ligature substitution)", + c->buffer->idx); + } + + c->replace_glyph (ligGlyph); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (ligature substitution)", + c->buffer->idx - 1u); + } + + return_trace (true); + } + + unsigned int total_component_count = 0; + + unsigned int match_end = 0; + unsigned int match_positions[HB_MAX_CONTEXT_LENGTH]; + + if (likely (!match_input (c, count, + &component[1], + match_glyph, + nullptr, + &match_end, + match_positions, + &total_component_count))) + { + c->buffer->unsafe_to_concat (c->buffer->idx, match_end); + return_trace (false); + } + + unsigned pos = 0; + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + unsigned delta = c->buffer->sync_so_far (); + + pos = c->buffer->idx; + + char buf[HB_MAX_CONTEXT_LENGTH * 16] = {0}; + char *p = buf; + + match_end += delta; + for (unsigned i = 0; i < count; i++) + { + match_positions[i] += delta; + if (i) + *p++ = ','; + snprintf (p, sizeof(buf) - (p - buf), "%u", match_positions[i]); + p += strlen(p); + } + + c->buffer->message (c->font, + "ligating glyphs at %s", + buf); + } + + ligate_input (c, + count, + match_positions, + match_end, + ligGlyph, + total_component_count); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "ligated glyph at %u", + pos); + } + + return_trace (true); + } + + template + bool serialize (hb_serialize_context_t *c, + hb_codepoint_t ligature, + Iterator components /* Starting from second */) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + ligGlyph = ligature; + if (unlikely (!component.serialize (c, components))) return_trace (false); + return_trace (true); + } + + bool subset (hb_subset_context_t *c, unsigned coverage_idx) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + if (!intersects (&glyphset) || !glyphset.has (ligGlyph)) return_trace (false); + // Ensure Coverage table is always packed after this. + c->serializer->add_virtual_link (coverage_idx); + + auto it = + + hb_iter (component) + | hb_map (glyph_map) + ; + + auto *out = c->serializer->start_embed (*this); + return_trace (out->serialize (c->serializer, + glyph_map[ligGlyph], + it)); } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GSUB_LIGATURE_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSet.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSet.hh new file mode 100644 index 0000000000..0ba262e901 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSet.hh @@ -0,0 +1,189 @@ +#ifndef OT_LAYOUT_GSUB_LIGATURESET_HH +#define OT_LAYOUT_GSUB_LIGATURESET_HH + +#include "Common.hh" +#include "Ligature.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct LigatureSet +{ + protected: + Array16OfOffset16To> + ligature; /* Array LigatureSet tables + * ordered by preference */ + public: + DEFINE_SIZE_ARRAY (2, ligature); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (ligature.sanitize (c, this)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return + + hb_iter (ligature) + | hb_map (hb_add (this)) + | hb_map ([glyphs] (const Ligature &_) { return _.intersects (glyphs); }) + | hb_any + ; + } + + bool intersects_lig_glyph (const hb_set_t *glyphs) const + { + return + + hb_iter (ligature) + | hb_map (hb_add (this)) + | hb_map ([glyphs] (const Ligature &_) { + return _.intersects_lig_glyph (glyphs) && _.intersects (glyphs); + }) + | hb_any + ; + } + + void closure (hb_closure_context_t *c) const + { + + hb_iter (ligature) + | hb_map (hb_add (this)) + | hb_apply ([c] (const Ligature &_) { _.closure (c); }) + ; + } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + + hb_iter (ligature) + | hb_map (hb_add (this)) + | hb_apply ([c] (const Ligature &_) { _.collect_glyphs (c); }) + ; + } + + bool would_apply (hb_would_apply_context_t *c) const + { + return + + hb_iter (ligature) + | hb_map (hb_add (this)) + | hb_map ([c] (const Ligature &_) { return _.would_apply (c); }) + | hb_any + ; + } + + static bool match_always (hb_glyph_info_t &info HB_UNUSED, unsigned value HB_UNUSED, const void *data HB_UNUSED) + { + return true; + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + + unsigned int num_ligs = ligature.len; + +#ifndef HB_NO_OT_LIGATURES_FAST_PATH + if (HB_OPTIMIZE_SIZE_VAL || num_ligs <= 2) +#endif + { + slow: + for (unsigned int i = 0; i < num_ligs; i++) + { + const auto &lig = this+ligature.arrayZ[i]; + if (lig.apply (c)) return_trace (true); + } + return_trace (false); + } + + /* This version is optimized for speed by matching the first component + * of the ligature here, instead of calling into the ligation code. */ + + hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; + skippy_iter.reset (c->buffer->idx, 1); + skippy_iter.set_match_func (match_always, nullptr); + skippy_iter.set_glyph_data ((HBUINT16 *) nullptr); + unsigned unsafe_to; + hb_codepoint_t first = (unsigned) -1; + bool matched = skippy_iter.next (&unsafe_to); + if (likely (matched)) + { + first = c->buffer->info[skippy_iter.idx].codepoint; + unsafe_to = skippy_iter.idx + 1; + + if (skippy_iter.may_skip (c->buffer->info[skippy_iter.idx])) + { + /* Can't use the fast path if eg. the next char is a default-ignorable + * or other skippable. */ + goto slow; + } + } + + bool unsafe_to_concat = false; + + for (unsigned int i = 0; i < num_ligs; i++) + { + const auto &lig = this+ligature.arrayZ[i]; + if (unlikely (lig.component.lenP1 <= 1) || + lig.component[1] == first) + { + if (lig.apply (c)) + { + if (unsafe_to_concat) + c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to); + return_trace (true); + } + } + else if (likely (lig.component.lenP1 > 1)) + unsafe_to_concat = true; + } + if (likely (unsafe_to_concat)) + c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to); + + return_trace (false); + } + + bool serialize (hb_serialize_context_t *c, + hb_array_t ligatures, + hb_array_t component_count_list, + hb_array_t &component_list /* Starting from second for each ligature */) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + if (unlikely (!ligature.serialize (c, ligatures.length))) return_trace (false); + for (unsigned int i = 0; i < ligatures.length; i++) + { + unsigned int component_count = (unsigned) hb_max ((int) component_count_list[i] - 1, 0); + if (unlikely (!ligature[i].serialize_serialize (c, + ligatures[i], + component_list.sub_array (0, component_count)))) + return_trace (false); + component_list += component_count; + } + return_trace (true); + } + + bool subset (hb_subset_context_t *c, unsigned coverage_idx) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + + hb_iter (ligature) + | hb_filter (subset_offset_array (c, out->ligature, this, coverage_idx)) + | hb_drain + ; + + if (bool (out->ligature)) + // Ensure Coverage table is always packed after this. + c->serializer->add_virtual_link (coverage_idx); + + return_trace (bool (out->ligature)); + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_LIGATURESET_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubst.hh new file mode 100644 index 0000000000..18f6e35581 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubst.hh @@ -0,0 +1,71 @@ +#ifndef OT_LAYOUT_GSUB_LIGATURESUBST_HH +#define OT_LAYOUT_GSUB_LIGATURESUBST_HH + +#include "Common.hh" +#include "LigatureSubstFormat1.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct LigatureSubst +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + LigatureSubstFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + LigatureSubstFormat1_2 format2; +#endif + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } + + /* TODO This function is only used by small GIDs, and not updated to 24bit GIDs. Should + * be done by using iterators. While at it perhaps using iterator of arrays of hb_codepoint_t + * instead. */ + bool serialize (hb_serialize_context_t *c, + hb_sorted_array_t first_glyphs, + hb_array_t ligature_per_first_glyph_count_list, + hb_array_t ligatures_list, + hb_array_t component_count_list, + hb_array_t component_list /* Starting from second for each ligature */) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (u.format))) return_trace (false); + unsigned int format = 1; + u.format = format; + switch (u.format) { + case 1: return_trace (u.format1.serialize (c, + first_glyphs, + ligature_per_first_glyph_count_list, + ligatures_list, + component_count_list, + component_list)); + default:return_trace (false); + } + } + + /* TODO subset() should choose format. */ + +}; + + +} +} +} + +#endif /* OT_LAYOUT_GSUB_LIGATURESUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubstFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubstFormat1.hh new file mode 100644 index 0000000000..5c7df97d13 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/LigatureSubstFormat1.hh @@ -0,0 +1,166 @@ +#ifndef OT_LAYOUT_GSUB_LIGATURESUBSTFORMAT1_HH +#define OT_LAYOUT_GSUB_LIGATURESUBSTFORMAT1_HH + +#include "Common.hh" +#include "LigatureSet.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct LigatureSubstFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of Substitution table */ + Array16Of>> + ligatureSet; /* Array LigatureSet tables + * ordered by Coverage Index */ + public: + DEFINE_SIZE_ARRAY (4 + Types::size, ligatureSet); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && ligatureSet.sanitize (c, this)); + } + + bool intersects (const hb_set_t *glyphs) const + { + return + + hb_zip (this+coverage, ligatureSet) + | hb_filter (*glyphs, hb_first) + | hb_map (hb_second) + | hb_map ([this, glyphs] (const typename Types::template OffsetTo> &_) + { return (this+_).intersects (glyphs); }) + | hb_any + ; + } + + bool may_have_non_1to1 () const + { return true; } + + void closure (hb_closure_context_t *c) const + { + + hb_zip (this+coverage, ligatureSet) + | hb_filter (c->parent_active_glyphs (), hb_first) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const LigatureSet &_) { _.closure (c); }) + ; + + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + + + hb_zip (this+coverage, ligatureSet) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const LigatureSet &_) { _.collect_glyphs (c); }) + ; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { + unsigned int index = (this+coverage).get_coverage (c->glyphs[0]); + if (likely (index == NOT_COVERED)) return false; + + const auto &lig_set = this+ligatureSet[index]; + return lig_set.would_apply (c); + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + + unsigned int index = (this+coverage).get_coverage (c->buffer->cur ().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + const auto &lig_set = this+ligatureSet[index]; + return_trace (lig_set.apply (c)); + } + + bool serialize (hb_serialize_context_t *c, + hb_sorted_array_t first_glyphs, + hb_array_t ligature_per_first_glyph_count_list, + hb_array_t ligatures_list, + hb_array_t component_count_list, + hb_array_t component_list /* Starting from second for each ligature */) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + if (unlikely (!ligatureSet.serialize (c, first_glyphs.length))) return_trace (false); + for (unsigned int i = 0; i < first_glyphs.length; i++) + { + unsigned int ligature_count = ligature_per_first_glyph_count_list[i]; + if (unlikely (!ligatureSet[i] + .serialize_serialize (c, + ligatures_list.sub_array (0, ligature_count), + component_count_list.sub_array (0, ligature_count), + component_list))) return_trace (false); + ligatures_list += ligature_count; + component_count_list += ligature_count; + } + return_trace (coverage.serialize_serialize (c, first_glyphs)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + // Due to a bug in some older versions of windows 7 the Coverage table must be + // packed after the LigatureSet and Ligature tables, so serialize Coverage first + // which places it last in the packed order. + hb_set_t new_coverage; + + hb_zip (this+coverage, hb_iter (ligatureSet) | hb_map (hb_add (this))) + | hb_filter (glyphset, hb_first) + | hb_filter ([&] (const LigatureSet& _) { + return _.intersects_lig_glyph (&glyphset); + }, hb_second) + | hb_map (hb_first) + | hb_sink (new_coverage); + + if (!c->serializer->push () + ->serialize (c->serializer, + + new_coverage.iter () | hb_map_retains_sorting (glyph_map))) + { + c->serializer->pop_discard (); + return_trace (false); + } + + unsigned coverage_idx = c->serializer->pop_pack (); + c->serializer->add_link (out->coverage, coverage_idx); + + + hb_zip (this+coverage, ligatureSet) + | hb_filter (new_coverage, hb_first) + | hb_map (hb_second) + // to ensure that the repacker always orders the coverage table after the LigatureSet + // and LigatureSubtable's they will be linked to the Coverage table via a virtual link + // the coverage table object idx is passed down to facilitate this. + | hb_apply (subset_offset_array (c, out->ligatureSet, this, coverage_idx)) + ; + + return_trace (bool (new_coverage)); + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_LIGATURESUBSTFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubst.hh new file mode 100644 index 0000000000..742c8587ee --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubst.hh @@ -0,0 +1,62 @@ +#ifndef OT_LAYOUT_GSUB_MULTIPLESUBST_HH +#define OT_LAYOUT_GSUB_MULTIPLESUBST_HH + +#include "Common.hh" +#include "MultipleSubstFormat1.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct MultipleSubst +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + MultipleSubstFormat1_2 format1; +#ifndef HB_NO_BEYOND_64K + MultipleSubstFormat1_2 format2; +#endif + } u; + + public: + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator it) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (u.format))) return_trace (false); + unsigned int format = 1; + u.format = format; + switch (u.format) { + case 1: return_trace (u.format1.serialize (c, it)); + default:return_trace (false); + } + } + + /* TODO subset() should choose format. */ + +}; + + +} +} +} + +#endif /* OT_LAYOUT_GSUB_MULTIPLESUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubstFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubstFormat1.hh new file mode 100644 index 0000000000..3b4bd11694 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/MultipleSubstFormat1.hh @@ -0,0 +1,130 @@ +#ifndef OT_LAYOUT_GSUB_MULTIPLESUBSTFORMAT1_HH +#define OT_LAYOUT_GSUB_MULTIPLESUBSTFORMAT1_HH + +#include "Common.hh" +#include "Sequence.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct MultipleSubstFormat1_2 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of Substitution table */ + Array16Of>> + sequence; /* Array of Sequence tables + * ordered by Coverage Index */ + public: + DEFINE_SIZE_ARRAY (4 + Types::size, sequence); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && sequence.sanitize (c, this)); + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + bool may_have_non_1to1 () const + { return true; } + + void closure (hb_closure_context_t *c) const + { + + hb_zip (this+coverage, sequence) + | hb_filter (c->parent_active_glyphs (), hb_first) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const Sequence &_) { _.closure (c); }) + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + + hb_zip (this+coverage, sequence) + | hb_map (hb_second) + | hb_map (hb_add (this)) + | hb_apply ([c] (const Sequence &_) { _.collect_glyphs (c); }) + ; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + + unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + return_trace ((this+sequence[index]).apply (c)); + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator it) + { + TRACE_SERIALIZE (this); + auto sequences = + + it + | hb_map (hb_second) + ; + auto glyphs = + + it + | hb_map_retains_sorting (hb_first) + ; + if (unlikely (!c->extend_min (this))) return_trace (false); + + if (unlikely (!sequence.serialize (c, sequences.length))) return_trace (false); + + for (auto& pair : hb_zip (sequences, sequence)) + { + if (unlikely (!pair.second + .serialize_serialize (c, pair.first))) + return_trace (false); + } + + return_trace (coverage.serialize_serialize (c, glyphs)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_sorted_vector_t new_coverage; + + hb_zip (this+coverage, sequence) + | hb_filter (glyphset, hb_first) + | hb_filter (subset_offset_array (c, out->sequence, this), hb_second) + | hb_map (hb_first) + | hb_map (glyph_map) + | hb_sink (new_coverage) + ; + out->coverage.serialize_serialize (c->serializer, new_coverage.iter ()); + return_trace (bool (new_coverage)); + } +}; + +} +} +} + + +#endif /* OT_LAYOUT_GSUB_MULTIPLESUBSTFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubst.hh new file mode 100644 index 0000000000..5ad463fea7 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubst.hh @@ -0,0 +1,36 @@ +#ifndef OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBST_HH +#define OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBST_HH + +#include "Common.hh" +#include "ReverseChainSingleSubstFormat1.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct ReverseChainSingleSubst +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + ReverseChainSingleSubstFormat1 format1; + } u; + + public: + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + default:return_trace (c->default_return_value ()); + } + } +}; + +} +} +} + +#endif /* HB_OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubstFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubstFormat1.hh new file mode 100644 index 0000000000..2c2e1aa44f --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/ReverseChainSingleSubstFormat1.hh @@ -0,0 +1,244 @@ +#ifndef OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBSTFORMAT1_HH +#define OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBSTFORMAT1_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct ReverseChainSingleSubstFormat1 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + Offset16To + coverage; /* Offset to Coverage table--from + * beginning of table */ + Array16OfOffset16To + backtrack; /* Array of coverage tables + * in backtracking sequence, in glyph + * sequence order */ + Array16OfOffset16To + lookaheadX; /* Array of coverage tables + * in lookahead sequence, in glyph + * sequence order */ + Array16Of + substituteX; /* Array of substitute + * GlyphIDs--ordered by Coverage Index */ + public: + DEFINE_SIZE_MIN (10); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!(coverage.sanitize (c, this) && backtrack.sanitize (c, this))) + return_trace (false); + const auto &lookahead = StructAfter (backtrack); + if (!lookahead.sanitize (c, this)) + return_trace (false); + const auto &substitute = StructAfter (lookahead); + return_trace (substitute.sanitize (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { + if (!(this+coverage).intersects (glyphs)) + return false; + + const auto &lookahead = StructAfter (backtrack); + + unsigned int count; + + count = backtrack.len; + for (unsigned int i = 0; i < count; i++) + if (!(this+backtrack[i]).intersects (glyphs)) + return false; + + count = lookahead.len; + for (unsigned int i = 0; i < count; i++) + if (!(this+lookahead[i]).intersects (glyphs)) + return false; + + return true; + } + + bool may_have_non_1to1 () const + { return false; } + + void closure (hb_closure_context_t *c) const + { + if (!intersects (c->glyphs)) return; + + const auto &lookahead = StructAfter (backtrack); + const auto &substitute = StructAfter (lookahead); + + + hb_zip (this+coverage, substitute) + | hb_filter (c->parent_active_glyphs (), hb_first) + | hb_map (hb_second) + | hb_sink (c->output) + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + + unsigned int count; + + count = backtrack.len; + for (unsigned int i = 0; i < count; i++) + if (unlikely (!(this+backtrack[i]).collect_coverage (c->before))) return; + + const auto &lookahead = StructAfter (backtrack); + count = lookahead.len; + for (unsigned int i = 0; i < count; i++) + if (unlikely (!(this+lookahead[i]).collect_coverage (c->after))) return; + + const auto &substitute = StructAfter (lookahead); + count = substitute.len; + c->output->add_array (substitute.arrayZ, substitute.len); + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + if (unlikely (c->nesting_level_left != HB_MAX_NESTING_LEVEL)) + return_trace (false); /* No chaining to this type */ + + unsigned int index = (this+coverage).get_coverage (c->buffer->cur ().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + const auto &lookahead = StructAfter (backtrack); + const auto &substitute = StructAfter (lookahead); + + if (unlikely (index >= substitute.len)) return_trace (false); + + unsigned int start_index = 0, end_index = 0; + if (match_backtrack (c, + backtrack.len, (HBUINT16 *) backtrack.arrayZ, + match_coverage, this, + &start_index) && + match_lookahead (c, + lookahead.len, (HBUINT16 *) lookahead.arrayZ, + match_coverage, this, + c->buffer->idx + 1, &end_index)) + { + c->buffer->unsafe_to_break_from_outbuffer (start_index, end_index); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replacing glyph at %u (reverse chaining substitution)", + c->buffer->idx); + } + + c->replace_glyph_inplace (substitute[index]); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (reverse chaining substitution)", + c->buffer->idx); + } + + /* Note: We DON'T decrease buffer->idx. The main loop does it + * for us. This is useful for preventing surprises if someone + * calls us through a Context lookup. */ + return_trace (true); + } + else + { + c->buffer->unsafe_to_concat_from_outbuffer (start_index, end_index); + return_trace (false); + } + } + + template + bool serialize_coverage_offset_array (hb_subset_context_t *c, Iterator it) const + { + TRACE_SERIALIZE (this); + auto *out = c->serializer->start_embed> (); + + if (unlikely (!c->serializer->allocate_size (HBUINT16::static_size))) + return_trace (false); + + for (auto& offset : it) { + auto *o = out->serialize_append (c->serializer); + if (unlikely (!o) || !o->serialize_subset (c, offset, this)) + return_trace (false); + } + + return_trace (true); + } + + template + bool serialize (hb_subset_context_t *c, + Iterator coverage_subst_iter, + BacktrackIterator backtrack_iter, + LookaheadIterator lookahead_iter) const + { + TRACE_SERIALIZE (this); + + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->check_success (out))) return_trace (false); + if (unlikely (!c->serializer->embed (this->format))) return_trace (false); + if (unlikely (!c->serializer->embed (this->coverage))) return_trace (false); + + if (!serialize_coverage_offset_array (c, backtrack_iter)) return_trace (false); + if (!serialize_coverage_offset_array (c, lookahead_iter)) return_trace (false); + + auto *substitute_out = c->serializer->start_embed> (); + auto substitutes = + + coverage_subst_iter + | hb_map (hb_second) + ; + + auto glyphs = + + coverage_subst_iter + | hb_map_retains_sorting (hb_first) + ; + if (unlikely (! c->serializer->check_success (substitute_out->serialize (c->serializer, substitutes)))) + return_trace (false); + + if (unlikely (!out->coverage.serialize_serialize (c->serializer, glyphs))) + return_trace (false); + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + const auto &lookahead = StructAfter (backtrack); + const auto &substitute = StructAfter (lookahead); + + auto it = + + hb_zip (this+coverage, substitute) + | hb_filter (glyphset, hb_first) + | hb_filter (glyphset, hb_second) + | hb_map_retains_sorting ([&] (hb_pair_t p) -> hb_codepoint_pair_t + { return hb_pair (glyph_map[p.first], glyph_map[p.second]); }) + ; + + return_trace (bool (it) && serialize (c, it, backtrack.iter (), lookahead.iter ())); + } +}; + +} +} +} + +#endif /* HB_OT_LAYOUT_GSUB_REVERSECHAINSINGLESUBSTFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/Sequence.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/Sequence.hh new file mode 100644 index 0000000000..ae3292f329 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/Sequence.hh @@ -0,0 +1,165 @@ +#ifndef OT_LAYOUT_GSUB_SEQUENCE_HH +#define OT_LAYOUT_GSUB_SEQUENCE_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct Sequence +{ + protected: + Array16Of + substitute; /* String of GlyphIDs to substitute */ + public: + DEFINE_SIZE_ARRAY (2, substitute); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (substitute.sanitize (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { return hb_all (substitute, glyphs); } + + void closure (hb_closure_context_t *c) const + { c->output->add_array (substitute.arrayZ, substitute.len); } + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { c->output->add_array (substitute.arrayZ, substitute.len); } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + unsigned int count = substitute.len; + + /* Special-case to make it in-place and not consider this + * as a "multiplied" substitution. */ + if (unlikely (count == 1)) + { + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (multiple substitution)", + c->buffer->idx); + } + + c->replace_glyph (substitute.arrayZ[0]); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (multiple subtitution)", + c->buffer->idx - 1u); + } + + return_trace (true); + } + /* Spec disallows this, but Uniscribe allows it. + * https://github.com/harfbuzz/harfbuzz/issues/253 */ + else if (unlikely (count == 0)) + { + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "deleting glyph at %u (multiple substitution)", + c->buffer->idx); + } + + c->buffer->delete_glyph (); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "deleted glyph at %u (multiple substitution)", + c->buffer->idx); + } + + return_trace (true); + } + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "multiplying glyph at %u", + c->buffer->idx); + } + + unsigned int klass = _hb_glyph_info_is_ligature (&c->buffer->cur()) ? + HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH : 0; + unsigned lig_id = _hb_glyph_info_get_lig_id (&c->buffer->cur()); + + for (unsigned int i = 0; i < count; i++) + { + /* If is attached to a ligature, don't disturb that. + * https://github.com/harfbuzz/harfbuzz/issues/3069 */ + if (!lig_id) + _hb_glyph_info_set_lig_props_for_component (&c->buffer->cur(), i); + c->output_glyph_for_component (substitute.arrayZ[i], klass); + } + c->buffer->skip_glyph (); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + + char buf[HB_MAX_CONTEXT_LENGTH * 16] = {0}; + char *p = buf; + + for (unsigned i = c->buffer->idx - count; i < c->buffer->idx; i++) + { + if (buf < p) + *p++ = ','; + snprintf (p, sizeof(buf) - (p - buf), "%u", i); + p += strlen(p); + } + + c->buffer->message (c->font, + "multiplied glyphs at %s", + buf); + } + + return_trace (true); + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator subst) + { + TRACE_SERIALIZE (this); + return_trace (substitute.serialize (c, subst)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + if (!intersects (&glyphset)) return_trace (false); + + auto it = + + hb_iter (substitute) + | hb_map (glyph_map) + ; + + auto *out = c->serializer->start_embed (*this); + return_trace (out->serialize (c->serializer, it)); + } +}; + + +} +} +} + + +#endif /* OT_LAYOUT_GSUB_SEQUENCE_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubst.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubst.hh new file mode 100644 index 0000000000..181c9e52e5 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubst.hh @@ -0,0 +1,103 @@ +#ifndef OT_LAYOUT_GSUB_SINGLESUBST_HH +#define OT_LAYOUT_GSUB_SINGLESUBST_HH + +#include "Common.hh" +#include "SingleSubstFormat1.hh" +#include "SingleSubstFormat2.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct SingleSubst +{ + protected: + union { + HBUINT16 format; /* Format identifier */ + SingleSubstFormat1_3 format1; + SingleSubstFormat2_4 format2; +#ifndef HB_NO_BEYOND_64K + SingleSubstFormat1_3 format3; + SingleSubstFormat2_4 format4; +#endif + } u; + + public: + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + switch (u.format) { + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 3: return_trace (c->dispatch (u.format3, std::forward (ds)...)); + case 4: return_trace (c->dispatch (u.format4, std::forward (ds)...)); +#endif + default:return_trace (c->default_return_value ()); + } + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator glyphs) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (u.format))) return_trace (false); + unsigned format = 2; + unsigned delta = 0; + if (glyphs) + { + format = 1; + hb_codepoint_t mask = 0xFFFFu; + +#ifndef HB_NO_BEYOND_64K + if (+ glyphs + | hb_map_retains_sorting (hb_second) + | hb_filter ([] (hb_codepoint_t gid) { return gid > 0xFFFFu; })) + { + format += 2; + mask = 0xFFFFFFu; + } +#endif + + auto get_delta = [=] (hb_codepoint_pair_t _) + { return (unsigned) (_.second - _.first) & mask; }; + delta = get_delta (*glyphs); + if (!hb_all (++(+glyphs), delta, get_delta)) format += 1; + } + + u.format = format; + switch (u.format) { + case 1: return_trace (u.format1.serialize (c, + + glyphs + | hb_map_retains_sorting (hb_first), + delta)); + case 2: return_trace (u.format2.serialize (c, glyphs)); +#ifndef HB_NO_BEYOND_64K + case 3: return_trace (u.format3.serialize (c, + + glyphs + | hb_map_retains_sorting (hb_first), + delta)); + case 4: return_trace (u.format4.serialize (c, glyphs)); +#endif + default:return_trace (false); + } + } +}; + +template +static void +SingleSubst_serialize (hb_serialize_context_t *c, + Iterator it) +{ c->start_embed ()->serialize (c, it); } + +} +} +} + +#endif /* OT_LAYOUT_GSUB_SINGLESUBST_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat1.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat1.hh new file mode 100644 index 0000000000..850be86c04 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat1.hh @@ -0,0 +1,204 @@ +#ifndef OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH +#define OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct SingleSubstFormat1_3 +{ + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of Substitution table */ + typename Types::HBUINT + deltaGlyphID; /* Add to original GlyphID to get + * substitute GlyphID, modulo 0x10000 */ + + public: + DEFINE_SIZE_STATIC (2 + 2 * Types::size); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + coverage.sanitize (c, this) && + /* The coverage table may use a range to represent a set + * of glyphs, which means a small number of bytes can + * generate a large glyph set. Manually modify the + * sanitizer max ops to take this into account. + * + * Note: This check *must* be right after coverage sanitize. */ + c->check_ops ((this + coverage).get_population () >> 1)); + } + + hb_codepoint_t get_mask () const + { return (1 << (8 * Types::size)) - 1; } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + bool may_have_non_1to1 () const + { return false; } + + void closure (hb_closure_context_t *c) const + { + hb_codepoint_t d = deltaGlyphID; + hb_codepoint_t mask = get_mask (); + + /* Help fuzzer avoid this function as much. */ + unsigned pop = (this+coverage).get_population (); + if (pop >= mask) + return; + + hb_set_t intersection; + (this+coverage).intersect_set (c->parent_active_glyphs (), intersection); + + /* In degenerate fuzzer-found fonts, but not real fonts, + * this table can keep adding new glyphs in each round of closure. + * Refuse to close-over, if it maps glyph range to overlapping range. */ + hb_codepoint_t min_before = intersection.get_min (); + hb_codepoint_t max_before = intersection.get_max (); + hb_codepoint_t min_after = (min_before + d) & mask; + hb_codepoint_t max_after = (max_before + d) & mask; + if (intersection.get_population () == max_before - min_before + 1 && + ((min_before <= min_after && min_after <= max_before) || + (min_before <= max_after && max_after <= max_before))) + return; + + + hb_iter (intersection) + | hb_map ([d, mask] (hb_codepoint_t g) { return (g + d) & mask; }) + | hb_sink (c->output) + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + hb_codepoint_t d = deltaGlyphID; + hb_codepoint_t mask = get_mask (); + + + hb_iter (this+coverage) + | hb_map ([d, mask] (hb_codepoint_t g) { return (g + d) & mask; }) + | hb_sink (c->output) + ; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; } + + unsigned + get_glyph_alternates (hb_codepoint_t glyph_id, + unsigned start_offset, + unsigned *alternate_count /* IN/OUT. May be NULL. */, + hb_codepoint_t *alternate_glyphs /* OUT. May be NULL. */) const + { + unsigned int index = (this+coverage).get_coverage (glyph_id); + if (likely (index == NOT_COVERED)) + { + if (alternate_count) + *alternate_count = 0; + return 0; + } + + if (alternate_count && *alternate_count) + { + hb_codepoint_t d = deltaGlyphID; + hb_codepoint_t mask = get_mask (); + + glyph_id = (glyph_id + d) & mask; + + *alternate_glyphs = glyph_id; + *alternate_count = 1; + } + + return 1; + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_codepoint_t glyph_id = c->buffer->cur().codepoint; + unsigned int index = (this+coverage).get_coverage (glyph_id); + if (likely (index == NOT_COVERED)) return_trace (false); + + hb_codepoint_t d = deltaGlyphID; + hb_codepoint_t mask = get_mask (); + + glyph_id = (glyph_id + d) & mask; + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (single substitution)", + c->buffer->idx); + } + + c->replace_glyph (glyph_id); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (single substitution)", + c->buffer->idx - 1u); + } + + return_trace (true); + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator glyphs, + unsigned delta) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false); + c->check_assign (deltaGlyphID, delta, HB_SERIALIZE_ERROR_INT_OVERFLOW); + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + hb_codepoint_t d = deltaGlyphID; + hb_codepoint_t mask = get_mask (); + + hb_set_t intersection; + (this+coverage).intersect_set (glyphset, intersection); + + auto it = + + hb_iter (intersection) + | hb_map_retains_sorting ([d, mask] (hb_codepoint_t g) { + return hb_codepoint_pair_t (g, + (g + d) & mask); }) + | hb_filter (glyphset, hb_second) + | hb_map_retains_sorting ([&] (hb_codepoint_pair_t p) -> hb_codepoint_pair_t + { return hb_pair (glyph_map[p.first], glyph_map[p.second]); }) + ; + + bool ret = bool (it); + SingleSubst_serialize (c->serializer, it); + return_trace (ret); + } +}; + +} +} +} + + +#endif /* OT_LAYOUT_GSUB_SINGLESUBSTFORMAT1_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh new file mode 100644 index 0000000000..9c651abe71 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh @@ -0,0 +1,176 @@ +#ifndef OT_LAYOUT_GSUB_SINGLESUBSTFORMAT2_HH +#define OT_LAYOUT_GSUB_SINGLESUBSTFORMAT2_HH + +#include "Common.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +template +struct SingleSubstFormat2_4 +{ + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + typename Types::template OffsetTo + coverage; /* Offset to Coverage table--from + * beginning of Substitution table */ + Array16Of + substitute; /* Array of substitute + * GlyphIDs--ordered by Coverage Index */ + + public: + DEFINE_SIZE_ARRAY (4 + Types::size, substitute); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (coverage.sanitize (c, this) && substitute.sanitize (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { return (this+coverage).intersects (glyphs); } + + bool may_have_non_1to1 () const + { return false; } + + void closure (hb_closure_context_t *c) const + { + auto &cov = this+coverage; + auto &glyph_set = c->parent_active_glyphs (); + + if (substitute.len > glyph_set.get_population () * 4) + { + for (auto g : glyph_set) + { + unsigned i = cov.get_coverage (g); + if (i == NOT_COVERED || i >= substitute.len) + continue; + c->output->add (substitute.arrayZ[i]); + } + + return; + } + + + hb_zip (cov, substitute) + | hb_filter (glyph_set, hb_first) + | hb_map (hb_second) + | hb_sink (c->output) + ; + } + + void closure_lookups (hb_closure_lookups_context_t *c) const {} + + void collect_glyphs (hb_collect_glyphs_context_t *c) const + { + if (unlikely (!(this+coverage).collect_coverage (c->input))) return; + + hb_zip (this+coverage, substitute) + | hb_map (hb_second) + | hb_sink (c->output) + ; + } + + const Coverage &get_coverage () const { return this+coverage; } + + bool would_apply (hb_would_apply_context_t *c) const + { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; } + + unsigned + get_glyph_alternates (hb_codepoint_t glyph_id, + unsigned start_offset, + unsigned *alternate_count /* IN/OUT. May be NULL. */, + hb_codepoint_t *alternate_glyphs /* OUT. May be NULL. */) const + { + unsigned int index = (this+coverage).get_coverage (glyph_id); + if (likely (index == NOT_COVERED)) + { + if (alternate_count) + *alternate_count = 0; + return 0; + } + + if (alternate_count && *alternate_count) + { + glyph_id = substitute[index]; + + *alternate_glyphs = glyph_id; + *alternate_count = 1; + } + + return 1; + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); + if (likely (index == NOT_COVERED)) return_trace (false); + + if (unlikely (index >= substitute.len)) return_trace (false); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (single substitution)", + c->buffer->idx); + } + + c->replace_glyph (substitute[index]); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (single substitution)", + c->buffer->idx - 1u); + } + + return_trace (true); + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator it) + { + TRACE_SERIALIZE (this); + auto substitutes = + + it + | hb_map (hb_second) + ; + auto glyphs = + + it + | hb_map_retains_sorting (hb_first) + ; + if (unlikely (!c->extend_min (this))) return_trace (false); + if (unlikely (!substitute.serialize (c, substitutes))) return_trace (false); + if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false); + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto it = + + hb_zip (this+coverage, substitute) + | hb_filter (glyphset, hb_first) + | hb_filter (glyphset, hb_second) + | hb_map_retains_sorting ([&] (hb_pair_t p) -> hb_codepoint_pair_t + { return hb_pair (glyph_map[p.first], glyph_map[p.second]); }) + ; + + bool ret = bool (it); + SingleSubst_serialize (c->serializer, it); + return_trace (ret); + } +}; + +} +} +} + +#endif /* OT_LAYOUT_GSUB_SINGLESUBSTFORMAT2_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookup.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookup.hh new file mode 100644 index 0000000000..d49dcc0e0f --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookup.hh @@ -0,0 +1,220 @@ +#ifndef OT_LAYOUT_GSUB_SUBSTLOOKUP_HH +#define OT_LAYOUT_GSUB_SUBSTLOOKUP_HH + +#include "Common.hh" +#include "SubstLookupSubTable.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct SubstLookup : Lookup +{ + using SubTable = SubstLookupSubTable; + + bool sanitize (hb_sanitize_context_t *c) const + { return Lookup::sanitize (c); } + + const SubTable& get_subtable (unsigned int i) const + { return Lookup::get_subtable (i); } + + static inline bool lookup_type_is_reverse (unsigned int lookup_type) + { return lookup_type == SubTable::ReverseChainSingle; } + + bool is_reverse () const + { + unsigned int type = get_type (); + if (unlikely (type == SubTable::Extension)) + return get_subtable (0).u.extension.is_reverse (); + return lookup_type_is_reverse (type); + } + + bool may_have_non_1to1 () const + { + hb_have_non_1to1_context_t c; + return dispatch (&c); + } + + bool apply (hb_ot_apply_context_t *c) const + { + TRACE_APPLY (this); + return_trace (dispatch (c)); + } + + bool intersects (const hb_set_t *glyphs) const + { + hb_intersects_context_t c (glyphs); + return dispatch (&c); + } + + hb_closure_context_t::return_t closure (hb_closure_context_t *c, unsigned int this_index) const + { + if (!c->should_visit_lookup (this_index)) + return hb_closure_context_t::default_return_value (); + + c->set_recurse_func (dispatch_closure_recurse_func); + + hb_closure_context_t::return_t ret = dispatch (c); + + c->flush (); + + return ret; + } + + hb_closure_lookups_context_t::return_t closure_lookups (hb_closure_lookups_context_t *c, unsigned this_index) const + { + if (c->is_lookup_visited (this_index)) + return hb_closure_lookups_context_t::default_return_value (); + + c->set_lookup_visited (this_index); + if (!intersects (c->glyphs)) + { + c->set_lookup_inactive (this_index); + return hb_closure_lookups_context_t::default_return_value (); + } + + hb_closure_lookups_context_t::return_t ret = dispatch (c); + return ret; + } + + hb_collect_glyphs_context_t::return_t collect_glyphs (hb_collect_glyphs_context_t *c) const + { + c->set_recurse_func (dispatch_recurse_func); + return dispatch (c); + } + + template + void collect_coverage (set_t *glyphs) const + { + hb_collect_coverage_context_t c (glyphs); + dispatch (&c); + } + + bool would_apply (hb_would_apply_context_t *c, + const hb_ot_layout_lookup_accelerator_t *accel) const + { + if (unlikely (!c->len)) return false; + if (!accel->may_have (c->glyphs[0])) return false; + return dispatch (c); + } + + template + bool serialize_single (hb_serialize_context_t *c, + uint32_t lookup_props, + Glyphs glyphs, + Substitutes substitutes) + { + TRACE_SERIALIZE (this); + if (unlikely (!Lookup::serialize (c, SubTable::Single, lookup_props, 1))) return_trace (false); + if (c->push ()->u.single.serialize (c, hb_zip (glyphs, substitutes))) + { + c->add_link (get_subtables ()[0], c->pop_pack ()); + return_trace (true); + } + c->pop_discard (); + return_trace (false); + } + + template + bool serialize (hb_serialize_context_t *c, + uint32_t lookup_props, + Iterator it) + { + TRACE_SERIALIZE (this); + if (unlikely (!Lookup::serialize (c, SubTable::Multiple, lookup_props, 1))) return_trace (false); + if (c->push ()->u.multiple. + serialize (c, it)) + { + c->add_link (get_subtables ()[0], c->pop_pack ()); + return_trace (true); + } + c->pop_discard (); + return_trace (false); + } + + bool serialize_alternate (hb_serialize_context_t *c, + uint32_t lookup_props, + hb_sorted_array_t glyphs, + hb_array_t alternate_len_list, + hb_array_t alternate_glyphs_list) + { + TRACE_SERIALIZE (this); + if (unlikely (!Lookup::serialize (c, SubTable::Alternate, lookup_props, 1))) return_trace (false); + + if (c->push ()->u.alternate. + serialize (c, + glyphs, + alternate_len_list, + alternate_glyphs_list)) + { + c->add_link (get_subtables ()[0], c->pop_pack ()); + return_trace (true); + } + c->pop_discard (); + return_trace (false); + } + + bool serialize_ligature (hb_serialize_context_t *c, + uint32_t lookup_props, + hb_sorted_array_t first_glyphs, + hb_array_t ligature_per_first_glyph_count_list, + hb_array_t ligatures_list, + hb_array_t component_count_list, + hb_array_t component_list /* Starting from second for each ligature */) + { + TRACE_SERIALIZE (this); + if (unlikely (!Lookup::serialize (c, SubTable::Ligature, lookup_props, 1))) return_trace (false); + if (c->push ()->u.ligature. + serialize (c, + first_glyphs, + ligature_per_first_glyph_count_list, + ligatures_list, + component_count_list, + component_list)) + { + c->add_link (get_subtables ()[0], c->pop_pack ()); + return_trace (true); + } + c->pop_discard (); + return_trace (false); + } + + template + static inline typename context_t::return_t dispatch_recurse_func (context_t *c, unsigned int lookup_index); + + static inline typename hb_closure_context_t::return_t closure_glyphs_recurse_func (hb_closure_context_t *c, unsigned lookup_index, hb_set_t *covered_seq_indices, unsigned seq_index, unsigned end_index); + + static inline hb_closure_context_t::return_t dispatch_closure_recurse_func (hb_closure_context_t *c, unsigned lookup_index, hb_set_t *covered_seq_indices, unsigned seq_index, unsigned end_index) + { + if (!c->should_visit_lookup (lookup_index)) + return hb_empty_t (); + + hb_closure_context_t::return_t ret = closure_glyphs_recurse_func (c, lookup_index, covered_seq_indices, seq_index, end_index); + + /* While in theory we should flush here, it will cause timeouts because a recursive + * lookup can keep growing the glyph set. Skip, and outer loop will retry up to + * HB_CLOSURE_MAX_STAGES time, which should be enough for every realistic font. */ + //c->flush (); + + return ret; + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { return Lookup::dispatch (c, std::forward (ds)...); } + + bool subset (hb_subset_context_t *c) const + { return Lookup::subset (c); } +}; + + +} +} +} + +#endif /* OT_LAYOUT_GSUB_SUBSTLOOKUP_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookupSubTable.hh b/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookupSubTable.hh new file mode 100644 index 0000000000..a525fba039 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GSUB/SubstLookupSubTable.hh @@ -0,0 +1,77 @@ +#ifndef OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH +#define OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH + +#include "Common.hh" +#include "SingleSubst.hh" +#include "MultipleSubst.hh" +#include "AlternateSubst.hh" +#include "LigatureSubst.hh" +#include "ContextSubst.hh" +#include "ChainContextSubst.hh" +#include "ExtensionSubst.hh" +#include "ReverseChainSingleSubst.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +struct SubstLookupSubTable +{ + friend struct ::OT::Lookup; + friend struct SubstLookup; + + protected: + union { + SingleSubst single; + MultipleSubst multiple; + AlternateSubst alternate; + LigatureSubst ligature; + ContextSubst context; + ChainContextSubst chainContext; + ExtensionSubst extension; + ReverseChainSingleSubst reverseChainContextSingle; + } u; + public: + DEFINE_SIZE_MIN (0); + + enum Type { + Single = 1, + Multiple = 2, + Alternate = 3, + Ligature = 4, + Context = 5, + ChainContext = 6, + Extension = 7, + ReverseChainSingle = 8 + }; + + template + typename context_t::return_t dispatch (context_t *c, unsigned int lookup_type, Ts&&... ds) const + { + TRACE_DISPATCH (this, lookup_type); + switch (lookup_type) { + case Single: return_trace (u.single.dispatch (c, std::forward (ds)...)); + case Multiple: return_trace (u.multiple.dispatch (c, std::forward (ds)...)); + case Alternate: return_trace (u.alternate.dispatch (c, std::forward (ds)...)); + case Ligature: return_trace (u.ligature.dispatch (c, std::forward (ds)...)); + case Context: return_trace (u.context.dispatch (c, std::forward (ds)...)); + case ChainContext: return_trace (u.chainContext.dispatch (c, std::forward (ds)...)); + case Extension: return_trace (u.extension.dispatch (c, std::forward (ds)...)); + case ReverseChainSingle: return_trace (u.reverseChainContextSingle.dispatch (c, std::forward (ds)...)); + default: return_trace (c->default_return_value ()); + } + } + + bool intersects (const hb_set_t *glyphs, unsigned int lookup_type) const + { + hb_intersects_context_t c (glyphs); + return dispatch (&c, lookup_type); + } +}; + + +} +} +} + +#endif /* HB_OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH */ diff --git a/gfx/harfbuzz/src/OT/Layout/types.hh b/gfx/harfbuzz/src/OT/Layout/types.hh new file mode 100644 index 0000000000..6a43403e94 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/types.hh @@ -0,0 +1,66 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod, Garret Rieger + */ + +#ifndef OT_LAYOUT_TYPES_HH +#define OT_LAYOUT_TYPES_HH + +namespace OT { +namespace Layout { + +struct SmallTypes { + static constexpr unsigned size = 2; + using large_int = uint32_t; + using HBUINT = HBUINT16; + using HBGlyphID = HBGlyphID16; + using Offset = Offset16; + template + using OffsetTo = OT::Offset16To; + template + using ArrayOf = OT::Array16Of; + template + using SortedArrayOf = OT::SortedArray16Of; +}; + +struct MediumTypes { + static constexpr unsigned size = 3; + using large_int = uint64_t; + using HBUINT = HBUINT24; + using HBGlyphID = HBGlyphID24; + using Offset = Offset24; + template + using OffsetTo = OT::Offset24To; + template + using ArrayOf = OT::Array24Of; + template + using SortedArrayOf = OT::SortedArray24Of; +}; + +} +} + +#endif /* OT_LAYOUT_TYPES_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh b/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh new file mode 100644 index 0000000000..d81fadf7c8 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh @@ -0,0 +1,423 @@ +#ifndef OT_GLYF_COMPOSITEGLYPH_HH +#define OT_GLYF_COMPOSITEGLYPH_HH + + +#include "../../hb-open-type.hh" +#include "composite-iter.hh" + + +namespace OT { +namespace glyf_impl { + + +struct CompositeGlyphRecord +{ + protected: + enum composite_glyph_flag_t + { + ARG_1_AND_2_ARE_WORDS = 0x0001, + ARGS_ARE_XY_VALUES = 0x0002, + ROUND_XY_TO_GRID = 0x0004, + WE_HAVE_A_SCALE = 0x0008, + MORE_COMPONENTS = 0x0020, + WE_HAVE_AN_X_AND_Y_SCALE = 0x0040, + WE_HAVE_A_TWO_BY_TWO = 0x0080, + WE_HAVE_INSTRUCTIONS = 0x0100, + USE_MY_METRICS = 0x0200, + OVERLAP_COMPOUND = 0x0400, + SCALED_COMPONENT_OFFSET = 0x0800, + UNSCALED_COMPONENT_OFFSET = 0x1000, +#ifndef HB_NO_BEYOND_64K + GID_IS_24BIT = 0x2000 +#endif + }; + + public: + unsigned int get_size () const + { + unsigned int size = min_size; + /* glyphIndex is 24bit instead of 16bit */ +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) size += HBGlyphID24::static_size - HBGlyphID16::static_size; +#endif + /* arg1 and 2 are int16 */ + if (flags & ARG_1_AND_2_ARE_WORDS) size += 4; + /* arg1 and 2 are int8 */ + else size += 2; + + /* One x 16 bit (scale) */ + if (flags & WE_HAVE_A_SCALE) size += 2; + /* Two x 16 bit (xscale, yscale) */ + else if (flags & WE_HAVE_AN_X_AND_Y_SCALE) size += 4; + /* Four x 16 bit (xscale, scale01, scale10, yscale) */ + else if (flags & WE_HAVE_A_TWO_BY_TWO) size += 8; + + return size; + } + + void drop_instructions_flag () { flags = (uint16_t) flags & ~WE_HAVE_INSTRUCTIONS; } + void set_overlaps_flag () + { + flags = (uint16_t) flags | OVERLAP_COMPOUND; + } + + bool has_instructions () const { return flags & WE_HAVE_INSTRUCTIONS; } + + bool has_more () const { return flags & MORE_COMPONENTS; } + bool is_use_my_metrics () const { return flags & USE_MY_METRICS; } + bool is_anchored () const { return !(flags & ARGS_ARE_XY_VALUES); } + void get_anchor_points (unsigned int &point1, unsigned int &point2) const + { + const auto *p = &StructAfter (flags); +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) + p += HBGlyphID24::static_size; + else +#endif + p += HBGlyphID16::static_size; + if (flags & ARG_1_AND_2_ARE_WORDS) + { + point1 = ((const HBUINT16 *) p)[0]; + point2 = ((const HBUINT16 *) p)[1]; + } + else + { + point1 = p[0]; + point2 = p[1]; + } + } + + static void transform (const float (&matrix)[4], + hb_array_t points) + { + auto arrayZ = points.arrayZ; + unsigned count = points.length; + + if (matrix[0] != 1.f || matrix[1] != 0.f || + matrix[2] != 0.f || matrix[3] != 1.f) + for (unsigned i = 0; i < count; i++) + arrayZ[i].transform (matrix); + } + + static void translate (const contour_point_t &trans, + hb_array_t points) + { + auto arrayZ = points.arrayZ; + unsigned count = points.length; + + if (trans.x != 0.f || trans.y != 0.f) + for (unsigned i = 0; i < count; i++) + arrayZ[i].translate (trans); + } + + void transform_points (hb_array_t points, + const float (&matrix)[4], + const contour_point_t &trans) const + { + if (scaled_offsets ()) + { + translate (trans, points); + transform (matrix, points); + } + else + { + transform (matrix, points); + translate (trans, points); + } + } + + bool get_points (contour_point_vector_t &points) const + { + float matrix[4]; + contour_point_t trans; + get_transformation (matrix, trans); + points.alloc (points.length + 4); // For phantom points + if (unlikely (!points.resize (points.length + 1))) return false; + points.arrayZ[points.length - 1] = trans; + return true; + } + + unsigned compile_with_point (const contour_point_t &point, + char *out) const + { + const HBINT8 *p = &StructAfter (flags); +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) + p += HBGlyphID24::static_size; + else +#endif + p += HBGlyphID16::static_size; + + unsigned len = get_size (); + unsigned len_before_val = (const char *)p - (const char *)this; + if (flags & ARG_1_AND_2_ARE_WORDS) + { + // no overflow, copy value + hb_memcpy (out, this, len); + + HBINT16 *o = reinterpret_cast (out + len_before_val); + o[0] = roundf (point.x); + o[1] = roundf (point.y); + } + else + { + int new_x = roundf (point.x); + int new_y = roundf (point.y); + if (new_x <= 127 && new_x >= -128 && + new_y <= 127 && new_y >= -128) + { + hb_memcpy (out, this, len); + HBINT8 *o = reinterpret_cast (out + len_before_val); + o[0] = new_x; + o[1] = new_y; + } + else + { + // new point value has an int8 overflow + hb_memcpy (out, this, len_before_val); + + //update flags + CompositeGlyphRecord *o = reinterpret_cast (out); + o->flags = flags | ARG_1_AND_2_ARE_WORDS; + out += len_before_val; + + HBINT16 new_value; + new_value = new_x; + hb_memcpy (out, &new_value, HBINT16::static_size); + out += HBINT16::static_size; + + new_value = new_y; + hb_memcpy (out, &new_value, HBINT16::static_size); + out += HBINT16::static_size; + + hb_memcpy (out, p+2, len - len_before_val - 2); + len += 2; + } + } + return len; + } + + protected: + bool scaled_offsets () const + { return (flags & (SCALED_COMPONENT_OFFSET | UNSCALED_COMPONENT_OFFSET)) == SCALED_COMPONENT_OFFSET; } + + public: + bool get_transformation (float (&matrix)[4], contour_point_t &trans) const + { + matrix[0] = matrix[3] = 1.f; + matrix[1] = matrix[2] = 0.f; + + const auto *p = &StructAfter (flags); +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) + p += HBGlyphID24::static_size; + else +#endif + p += HBGlyphID16::static_size; + int tx, ty; + if (flags & ARG_1_AND_2_ARE_WORDS) + { + tx = *(const HBINT16 *) p; + p += HBINT16::static_size; + ty = *(const HBINT16 *) p; + p += HBINT16::static_size; + } + else + { + tx = *p++; + ty = *p++; + } + if (is_anchored ()) tx = ty = 0; + + trans.init ((float) tx, (float) ty); + + { + const F2DOT14 *points = (const F2DOT14 *) p; + if (flags & WE_HAVE_A_SCALE) + { + matrix[0] = matrix[3] = points[0].to_float (); + return true; + } + else if (flags & WE_HAVE_AN_X_AND_Y_SCALE) + { + matrix[0] = points[0].to_float (); + matrix[3] = points[1].to_float (); + return true; + } + else if (flags & WE_HAVE_A_TWO_BY_TWO) + { + matrix[0] = points[0].to_float (); + matrix[1] = points[1].to_float (); + matrix[2] = points[2].to_float (); + matrix[3] = points[3].to_float (); + return true; + } + } + return tx || ty; + } + + hb_codepoint_t get_gid () const + { +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) + return StructAfter (flags); + else +#endif + return StructAfter (flags); + } + void set_gid (hb_codepoint_t gid) + { +#ifndef HB_NO_BEYOND_64K + if (flags & GID_IS_24BIT) + StructAfter (flags) = gid; + else +#endif + /* TODO assert? */ + StructAfter (flags) = gid; + } + +#ifndef HB_NO_BEYOND_64K + void lower_gid_24_to_16 () + { + hb_codepoint_t gid = get_gid (); + if (!(flags & GID_IS_24BIT) || gid > 0xFFFFu) + return; + + /* Lower the flag and move the rest of the struct down. */ + + unsigned size = get_size (); + char *end = (char *) this + size; + char *p = &StructAfter (flags); + p += HBGlyphID24::static_size; + + flags = flags & ~GID_IS_24BIT; + set_gid (gid); + + memmove (p - HBGlyphID24::static_size + HBGlyphID16::static_size, p, end - p); + } +#endif + + protected: + HBUINT16 flags; + HBUINT24 pad; + public: + DEFINE_SIZE_MIN (4); +}; + +using composite_iter_t = composite_iter_tmpl; + +struct CompositeGlyph +{ + const GlyphHeader &header; + hb_bytes_t bytes; + CompositeGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) : + header (header_), bytes (bytes_) {} + + composite_iter_t iter () const + { return composite_iter_t (bytes, &StructAfter (header)); } + + unsigned int instructions_length (hb_bytes_t bytes) const + { + unsigned int start = bytes.length; + unsigned int end = bytes.length; + const CompositeGlyphRecord *last = nullptr; + for (auto &item : iter ()) + last = &item; + if (unlikely (!last)) return 0; + + if (last->has_instructions ()) + start = (char *) last - &bytes + last->get_size (); + if (unlikely (start > end)) return 0; + return end - start; + } + + /* Trimming for composites not implemented. + * If removing hints it falls out of that. */ + const hb_bytes_t trim_padding () const { return bytes; } + + void drop_hints () + { + for (const auto &_ : iter ()) + const_cast (_).drop_instructions_flag (); + } + + /* Chop instructions off the end */ + void drop_hints_bytes (hb_bytes_t &dest_start) const + { dest_start = bytes.sub_array (0, bytes.length - instructions_length (bytes)); } + + void set_overlaps_flag () + { + CompositeGlyphRecord& glyph_chain = const_cast ( + StructAfter (header)); + if (!bytes.check_range(&glyph_chain, CompositeGlyphRecord::min_size)) + return; + glyph_chain.set_overlaps_flag (); + } + + bool compile_bytes_with_deltas (const hb_bytes_t &source_bytes, + const contour_point_vector_t &points_with_deltas, + hb_bytes_t &dest_bytes /* OUT */) + { + if (source_bytes.length <= GlyphHeader::static_size || + header.numberOfContours != -1) + { + dest_bytes = hb_bytes_t (); + return true; + } + + unsigned source_len = source_bytes.length - GlyphHeader::static_size; + + /* try to allocate more memories than source glyph bytes + * in case that there might be an overflow for int8 value + * and we would need to use int16 instead */ + char *o = (char *) hb_calloc (source_len * 2, sizeof (char)); + if (unlikely (!o)) return false; + + const CompositeGlyphRecord *c = reinterpret_cast (source_bytes.arrayZ + GlyphHeader::static_size); + auto it = composite_iter_t (hb_bytes_t ((const char *)c, source_len), c); + + char *p = o; + unsigned i = 0, source_comp_len = 0; + for (const auto &component : it) + { + /* last 4 points in points_with_deltas are phantom points and should not be included */ + if (i >= points_with_deltas.length - 4) { + free (o); + return false; + } + + unsigned comp_len = component.get_size (); + if (component.is_anchored ()) + { + hb_memcpy (p, &component, comp_len); + p += comp_len; + } + else + { + unsigned new_len = component.compile_with_point (points_with_deltas[i], p); + p += new_len; + } + i++; + source_comp_len += comp_len; + } + + //copy instructions if any + if (source_len > source_comp_len) + { + unsigned instr_len = source_len - source_comp_len; + hb_memcpy (p, (const char *)c + source_comp_len, instr_len); + p += instr_len; + } + + unsigned len = p - o; + dest_bytes = hb_bytes_t (o, len); + return true; + } +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_COMPOSITEGLYPH_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/Glyph.hh b/gfx/harfbuzz/src/OT/glyf/Glyph.hh new file mode 100644 index 0000000000..2bd5fe8206 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/Glyph.hh @@ -0,0 +1,577 @@ +#ifndef OT_GLYF_GLYPH_HH +#define OT_GLYF_GLYPH_HH + + +#include "../../hb-open-type.hh" + +#include "GlyphHeader.hh" +#include "SimpleGlyph.hh" +#include "CompositeGlyph.hh" +#include "VarCompositeGlyph.hh" +#include "coord-setter.hh" + + +namespace OT { + +struct glyf_accelerator_t; + +namespace glyf_impl { + + +enum phantom_point_index_t +{ + PHANTOM_LEFT = 0, + PHANTOM_RIGHT = 1, + PHANTOM_TOP = 2, + PHANTOM_BOTTOM = 3, + PHANTOM_COUNT = 4 +}; + +struct Glyph +{ + enum glyph_type_t { + EMPTY, + SIMPLE, + COMPOSITE, +#ifndef HB_NO_VAR_COMPOSITES + VAR_COMPOSITE, +#endif + }; + + public: + composite_iter_t get_composite_iterator () const + { + if (type != COMPOSITE) return composite_iter_t (); + return CompositeGlyph (*header, bytes).iter (); + } + var_composite_iter_t get_var_composite_iterator () const + { +#ifndef HB_NO_VAR_COMPOSITES + if (type != VAR_COMPOSITE) return var_composite_iter_t (); + return VarCompositeGlyph (*header, bytes).iter (); +#else + return var_composite_iter_t (); +#endif + } + + const hb_bytes_t trim_padding () const + { + switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return VarCompositeGlyph (*header, bytes).trim_padding (); +#endif + case COMPOSITE: return CompositeGlyph (*header, bytes).trim_padding (); + case SIMPLE: return SimpleGlyph (*header, bytes).trim_padding (); + case EMPTY: return bytes; + default: return bytes; + } + } + + void drop_hints () + { + switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No hinting +#endif + case COMPOSITE: CompositeGlyph (*header, bytes).drop_hints (); return; + case SIMPLE: SimpleGlyph (*header, bytes).drop_hints (); return; + case EMPTY: return; + } + } + + void set_overlaps_flag () + { + switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No overlaps flag +#endif + case COMPOSITE: CompositeGlyph (*header, bytes).set_overlaps_flag (); return; + case SIMPLE: SimpleGlyph (*header, bytes).set_overlaps_flag (); return; + case EMPTY: return; + } + } + + void drop_hints_bytes (hb_bytes_t &dest_start, hb_bytes_t &dest_end) const + { + switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No hinting +#endif + case COMPOSITE: CompositeGlyph (*header, bytes).drop_hints_bytes (dest_start); return; + case SIMPLE: SimpleGlyph (*header, bytes).drop_hints_bytes (dest_start, dest_end); return; + case EMPTY: return; + } + } + + void update_mtx (const hb_subset_plan_t *plan, + int xMin, int xMax, + int yMin, int yMax, + const contour_point_vector_t &all_points) const + { + hb_codepoint_t new_gid = 0; + if (!plan->new_gid_for_old_gid (gid, &new_gid)) + return; + + if (type != EMPTY) + { + plan->bounds_width_map.set (new_gid, xMax - xMin); + plan->bounds_height_map.set (new_gid, yMax - yMin); + } + + unsigned len = all_points.length; + float leftSideX = all_points[len - 4].x; + float rightSideX = all_points[len - 3].x; + float topSideY = all_points[len - 2].y; + float bottomSideY = all_points[len - 1].y; + + signed hori_aw = roundf (rightSideX - leftSideX); + if (hori_aw < 0) hori_aw = 0; + int lsb = roundf (xMin - leftSideX); + plan->hmtx_map.set (new_gid, hb_pair ((unsigned) hori_aw, lsb)); + //flag value should be computed using non-empty glyphs + if (type != EMPTY && lsb != xMin) + plan->head_maxp_info.allXMinIsLsb = false; + + signed vert_aw = roundf (topSideY - bottomSideY); + if (vert_aw < 0) vert_aw = 0; + int tsb = roundf (topSideY - yMax); + plan->vmtx_map.set (new_gid, hb_pair ((unsigned) vert_aw, tsb)); + } + + bool compile_header_bytes (const hb_subset_plan_t *plan, + const contour_point_vector_t &all_points, + hb_bytes_t &dest_bytes /* OUT */) const + { + GlyphHeader *glyph_header = nullptr; + if (!plan->pinned_at_default && type != EMPTY && all_points.length >= 4) + { + glyph_header = (GlyphHeader *) hb_calloc (1, GlyphHeader::static_size); + if (unlikely (!glyph_header)) return false; + } + + float xMin = 0, xMax = 0; + float yMin = 0, yMax = 0; + if (all_points.length > 4) + { + xMin = xMax = all_points[0].x; + yMin = yMax = all_points[0].y; + + unsigned count = all_points.length - 4; + for (unsigned i = 1; i < count; i++) + { + float x = all_points[i].x; + float y = all_points[i].y; + xMin = hb_min (xMin, x); + xMax = hb_max (xMax, x); + yMin = hb_min (yMin, y); + yMax = hb_max (yMax, y); + } + } + + + // These are destined for storage in a 16 bit field to clamp the values to + // fit into a 16 bit signed integer. + int rounded_xMin = hb_clamp (roundf (xMin), -32768.0f, 32767.0f); + int rounded_xMax = hb_clamp (roundf (xMax), -32768.0f, 32767.0f); + int rounded_yMin = hb_clamp (roundf (yMin), -32768.0f, 32767.0f); + int rounded_yMax = hb_clamp (roundf (yMax), -32768.0f, 32767.0f); + + update_mtx (plan, rounded_xMin, rounded_xMax, rounded_yMin, rounded_yMax, all_points); + + if (type != EMPTY) + { + plan->head_maxp_info.xMin = hb_min (plan->head_maxp_info.xMin, rounded_xMin); + plan->head_maxp_info.yMin = hb_min (plan->head_maxp_info.yMin, rounded_yMin); + plan->head_maxp_info.xMax = hb_max (plan->head_maxp_info.xMax, rounded_xMax); + plan->head_maxp_info.yMax = hb_max (plan->head_maxp_info.yMax, rounded_yMax); + } + + /* when pinned at default, no need to compile glyph header + * and for empty glyphs: all_points only include phantom points. + * just update metrics and then return */ + if (!glyph_header) + return true; + + glyph_header->numberOfContours = header->numberOfContours; + + glyph_header->xMin = rounded_xMin; + glyph_header->yMin = rounded_yMin; + glyph_header->xMax = rounded_xMax; + glyph_header->yMax = rounded_yMax; + + dest_bytes = hb_bytes_t ((const char *)glyph_header, GlyphHeader::static_size); + return true; + } + + bool compile_bytes_with_deltas (const hb_subset_plan_t *plan, + hb_font_t *font, + const glyf_accelerator_t &glyf, + hb_bytes_t &dest_start, /* IN/OUT */ + hb_bytes_t &dest_end /* OUT */) + { + contour_point_vector_t all_points, points_with_deltas; + unsigned composite_contours = 0; + head_maxp_info_t *head_maxp_info_p = &plan->head_maxp_info; + unsigned *composite_contours_p = &composite_contours; + + // don't compute head/maxp values when glyph has no contours(type is EMPTY) + // also ignore .notdef glyph when --notdef-outline is not enabled + if (type == EMPTY || + (gid == 0 && !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE))) + { + head_maxp_info_p = nullptr; + composite_contours_p = nullptr; + } + + if (!get_points (font, glyf, all_points, &points_with_deltas, head_maxp_info_p, composite_contours_p, false, false)) + return false; + + // .notdef, set type to empty so we only update metrics and don't compile bytes for + // it + if (gid == 0 && + !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE)) + { + type = EMPTY; + dest_start = hb_bytes_t (); + dest_end = hb_bytes_t (); + } + + //dont compile bytes when pinned at default, just recalculate bounds + if (!plan->pinned_at_default) + { + switch (type) + { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: + // TODO + dest_end = hb_bytes_t (); + break; +#endif + + case COMPOSITE: + if (!CompositeGlyph (*header, bytes).compile_bytes_with_deltas (dest_start, + points_with_deltas, + dest_end)) + return false; + break; + case SIMPLE: + if (!SimpleGlyph (*header, bytes).compile_bytes_with_deltas (all_points, + plan->flags & HB_SUBSET_FLAGS_NO_HINTING, + dest_end)) + return false; + break; + case EMPTY: + /* set empty bytes for empty glyph + * do not use source glyph's pointers */ + dest_start = hb_bytes_t (); + dest_end = hb_bytes_t (); + break; + } + } + + if (!compile_header_bytes (plan, all_points, dest_start)) + { + dest_end.fini (); + return false; + } + return true; + } + + + /* Note: Recursively calls itself. + * all_points includes phantom points + */ + template + bool get_points (hb_font_t *font, const accelerator_t &glyf_accelerator, + contour_point_vector_t &all_points /* OUT */, + contour_point_vector_t *points_with_deltas = nullptr, /* OUT */ + head_maxp_info_t * head_maxp_info = nullptr, /* OUT */ + unsigned *composite_contours = nullptr, /* OUT */ + bool shift_points_hori = true, + bool use_my_metrics = true, + bool phantom_only = false, + hb_array_t coords = hb_array_t (), + unsigned int depth = 0, + unsigned *edge_count = nullptr) const + { + if (unlikely (depth > HB_MAX_NESTING_LEVEL)) return false; + unsigned stack_edge_count = 0; + if (!edge_count) edge_count = &stack_edge_count; + if (unlikely (*edge_count > HB_GLYF_MAX_EDGE_COUNT)) return false; + (*edge_count)++; + + if (head_maxp_info) + { + head_maxp_info->maxComponentDepth = hb_max (head_maxp_info->maxComponentDepth, depth); + } + + if (!coords) + coords = hb_array (font->coords, font->num_coords); + + contour_point_vector_t stack_points; + contour_point_vector_t &points = type == SIMPLE ? all_points : stack_points; + unsigned old_length = points.length; + + switch (type) { + case SIMPLE: + if (depth == 0 && head_maxp_info) + head_maxp_info->maxContours = hb_max (head_maxp_info->maxContours, (unsigned) header->numberOfContours); + if (depth > 0 && composite_contours) + *composite_contours += (unsigned) header->numberOfContours; + if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (all_points, phantom_only))) + return false; + break; + case COMPOSITE: + { + for (auto &item : get_composite_iterator ()) + if (unlikely (!item.get_points (points))) return false; + break; + } +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: + { + for (auto &item : get_var_composite_iterator ()) + if (unlikely (!item.get_points (points))) return false; + break; + } +#endif + case EMPTY: + break; + } + + /* Init phantom points */ + if (unlikely (!points.resize (points.length + PHANTOM_COUNT))) return false; + hb_array_t phantoms = points.as_array ().sub_array (points.length - PHANTOM_COUNT, PHANTOM_COUNT); + { + int lsb = 0; + int h_delta = glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb) ? + (int) header->xMin - lsb : 0; + HB_UNUSED int tsb = 0; + int v_orig = (int) header->yMax + +#ifndef HB_NO_VERTICAL + ((void) glyf_accelerator.vmtx->get_leading_bearing_without_var_unscaled (gid, &tsb), tsb) +#else + 0 +#endif + ; + unsigned h_adv = glyf_accelerator.hmtx->get_advance_without_var_unscaled (gid); + unsigned v_adv = +#ifndef HB_NO_VERTICAL + glyf_accelerator.vmtx->get_advance_without_var_unscaled (gid) +#else + - font->face->get_upem () +#endif + ; + phantoms[PHANTOM_LEFT].x = h_delta; + phantoms[PHANTOM_RIGHT].x = (int) h_adv + h_delta; + phantoms[PHANTOM_TOP].y = v_orig; + phantoms[PHANTOM_BOTTOM].y = v_orig - (int) v_adv; + } + +#ifndef HB_NO_VAR + glyf_accelerator.gvar->apply_deltas_to_points (gid, + coords, + points.as_array ().sub_array (old_length)); +#endif + + // mainly used by CompositeGlyph calculating new X/Y offset value so no need to extend it + // with child glyphs' points + if (points_with_deltas != nullptr && depth == 0 && type == COMPOSITE) + { + if (unlikely (!points_with_deltas->resize (points.length))) return false; + points_with_deltas->copy_vector (points); + } + + switch (type) { + case SIMPLE: + if (depth == 0 && head_maxp_info) + head_maxp_info->maxPoints = hb_max (head_maxp_info->maxPoints, all_points.length - old_length - 4); + break; + case COMPOSITE: + { + unsigned int comp_index = 0; + for (auto &item : get_composite_iterator ()) + { + unsigned old_count = all_points.length; + + if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) && + !glyf_accelerator.glyph_for_gid (item.get_gid ()) + .get_points (font, + glyf_accelerator, + all_points, + points_with_deltas, + head_maxp_info, + composite_contours, + shift_points_hori, + use_my_metrics, + phantom_only, + coords, + depth + 1, + edge_count))) + return false; + + auto comp_points = all_points.as_array ().sub_array (old_count); + + /* Copy phantom points from component if USE_MY_METRICS flag set */ + if (use_my_metrics && item.is_use_my_metrics ()) + for (unsigned int i = 0; i < PHANTOM_COUNT; i++) + phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i]; + + float matrix[4]; + contour_point_t default_trans; + item.get_transformation (matrix, default_trans); + + /* Apply component transformation & translation (with deltas applied) */ + item.transform_points (comp_points, matrix, points[comp_index]); + + if (item.is_anchored ()) + { + unsigned int p1, p2; + item.get_anchor_points (p1, p2); + if (likely (p1 < all_points.length && p2 < comp_points.length)) + { + contour_point_t delta; + delta.init (all_points[p1].x - comp_points[p2].x, + all_points[p1].y - comp_points[p2].y); + + item.translate (delta, comp_points); + } + } + + all_points.resize (all_points.length - PHANTOM_COUNT); + + if (all_points.length > HB_GLYF_MAX_POINTS) + return false; + + comp_index++; + } + + if (head_maxp_info && depth == 0) + { + if (composite_contours) + head_maxp_info->maxCompositeContours = hb_max (head_maxp_info->maxCompositeContours, *composite_contours); + head_maxp_info->maxCompositePoints = hb_max (head_maxp_info->maxCompositePoints, all_points.length); + head_maxp_info->maxComponentElements = hb_max (head_maxp_info->maxComponentElements, comp_index); + } + all_points.extend (phantoms); + } break; +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: + { + hb_array_t points_left = points.as_array (); + for (auto &item : get_var_composite_iterator ()) + { + unsigned item_num_points = item.get_num_points (); + hb_array_t record_points = points_left.sub_array (0, item_num_points); + assert (record_points.length == item_num_points); + + auto component_coords = coords; + if (item.is_reset_unspecified_axes ()) + component_coords = hb_array (); + + coord_setter_t coord_setter (component_coords); + item.set_variations (coord_setter, record_points); + + unsigned old_count = all_points.length; + + if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) && + !glyf_accelerator.glyph_for_gid (item.get_gid ()) + .get_points (font, + glyf_accelerator, + all_points, + points_with_deltas, + head_maxp_info, + nullptr, + shift_points_hori, + use_my_metrics, + phantom_only, + coord_setter.get_coords (), + depth + 1, + edge_count))) + return false; + + auto comp_points = all_points.as_array ().sub_array (old_count); + + /* Apply component transformation */ + if (comp_points) // Empty in case of phantom_only + item.transform_points (record_points, comp_points); + + /* Copy phantom points from component if USE_MY_METRICS flag set */ + if (use_my_metrics && item.is_use_my_metrics ()) + for (unsigned int i = 0; i < PHANTOM_COUNT; i++) + phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i]; + + all_points.resize (all_points.length - PHANTOM_COUNT); + + if (all_points.length > HB_GLYF_MAX_POINTS) + return false; + + points_left += item_num_points; + } + all_points.extend (phantoms); + } break; +#endif + case EMPTY: + all_points.extend (phantoms); + break; + } + + if (depth == 0 && shift_points_hori) /* Apply at top level */ + { + /* Undocumented rasterizer behavior: + * Shift points horizontally by the updated left side bearing + */ + int v = -phantoms[PHANTOM_LEFT].x; + if (v) + for (auto &point : all_points) + point.x += v; + } + + return !all_points.in_error (); + } + + bool get_extents_without_var_scaled (hb_font_t *font, const glyf_accelerator_t &glyf_accelerator, + hb_glyph_extents_t *extents) const + { + if (type == EMPTY) return true; /* Empty glyph; zero extents. */ + return header->get_extents_without_var_scaled (font, glyf_accelerator, gid, extents); + } + + hb_bytes_t get_bytes () const { return bytes; } + glyph_type_t get_type () const { return type; } + const GlyphHeader *get_header () const { return header; } + + Glyph () : bytes (), + header (bytes.as ()), + gid (-1), + type(EMPTY) + {} + + Glyph (hb_bytes_t bytes_, + hb_codepoint_t gid_ = (unsigned) -1) : bytes (bytes_), + header (bytes.as ()), + gid (gid_) + { + int num_contours = header->numberOfContours; + if (unlikely (num_contours == 0)) type = EMPTY; + else if (num_contours > 0) type = SIMPLE; + else if (num_contours == -1) type = COMPOSITE; +#ifndef HB_NO_VAR_COMPOSITES + else if (num_contours == -2) type = VAR_COMPOSITE; +#endif + else type = EMPTY; // Spec deviation; Spec says COMPOSITE, but not seen in the wild. + } + + protected: + hb_bytes_t bytes; + const GlyphHeader *header; + hb_codepoint_t gid; + glyph_type_t type; +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_GLYPH_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh b/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh new file mode 100644 index 0000000000..a43b6691ab --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh @@ -0,0 +1,52 @@ +#ifndef OT_GLYF_GLYPHHEADER_HH +#define OT_GLYF_GLYPHHEADER_HH + + +#include "../../hb-open-type.hh" + + +namespace OT { +namespace glyf_impl { + + +struct GlyphHeader +{ + bool has_data () const { return numberOfContours; } + + template + bool get_extents_without_var_scaled (hb_font_t *font, const accelerator_t &glyf_accelerator, + hb_codepoint_t gid, hb_glyph_extents_t *extents) const + { + /* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */ + /* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */ + int lsb = hb_min (xMin, xMax); + (void) glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb); + extents->x_bearing = lsb; + extents->y_bearing = hb_max (yMin, yMax); + extents->width = hb_max (xMin, xMax) - hb_min (xMin, xMax); + extents->height = hb_min (yMin, yMax) - hb_max (yMin, yMax); + + font->scale_glyph_extents (extents); + + return true; + } + + HBINT16 numberOfContours; + /* If the number of contours is + * greater than or equal to zero, + * this is a simple glyph; if negative, + * this is a composite glyph. */ + FWORD xMin; /* Minimum x for coordinate data. */ + FWORD yMin; /* Minimum y for coordinate data. */ + FWORD xMax; /* Maximum x for coordinate data. */ + FWORD yMax; /* Maximum y for coordinate data. */ + public: + DEFINE_SIZE_STATIC (10); +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_GLYPHHEADER_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh b/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh new file mode 100644 index 0000000000..555bcee346 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh @@ -0,0 +1,348 @@ +#ifndef OT_GLYF_SIMPLEGLYPH_HH +#define OT_GLYF_SIMPLEGLYPH_HH + + +#include "../../hb-open-type.hh" + + +namespace OT { +namespace glyf_impl { + + +struct SimpleGlyph +{ + enum simple_glyph_flag_t + { + FLAG_ON_CURVE = 0x01, + FLAG_X_SHORT = 0x02, + FLAG_Y_SHORT = 0x04, + FLAG_REPEAT = 0x08, + FLAG_X_SAME = 0x10, + FLAG_Y_SAME = 0x20, + FLAG_OVERLAP_SIMPLE = 0x40, + FLAG_CUBIC = 0x80 + }; + + const GlyphHeader &header; + hb_bytes_t bytes; + SimpleGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) : + header (header_), bytes (bytes_) {} + + unsigned int instruction_len_offset () const + { return GlyphHeader::static_size + 2 * header.numberOfContours; } + + unsigned int length (unsigned int instruction_len) const + { return instruction_len_offset () + 2 + instruction_len; } + + bool has_instructions_length () const + { + return instruction_len_offset () + 2 <= bytes.length; + } + + unsigned int instructions_length () const + { + unsigned int instruction_length_offset = instruction_len_offset (); + if (unlikely (instruction_length_offset + 2 > bytes.length)) return 0; + + const HBUINT16 &instructionLength = StructAtOffset (&bytes, instruction_length_offset); + /* Out of bounds of the current glyph */ + if (unlikely (length (instructionLength) > bytes.length)) return 0; + return instructionLength; + } + + const hb_bytes_t trim_padding () const + { + /* based on FontTools _g_l_y_f.py::trim */ + const uint8_t *glyph = (uint8_t*) bytes.arrayZ; + const uint8_t *glyph_end = glyph + bytes.length; + /* simple glyph w/contours, possibly trimmable */ + glyph += instruction_len_offset (); + + if (unlikely (glyph + 2 >= glyph_end)) return hb_bytes_t (); + unsigned int num_coordinates = StructAtOffset (glyph - 2, 0) + 1; + unsigned int num_instructions = StructAtOffset (glyph, 0); + + glyph += 2 + num_instructions; + + unsigned int coord_bytes = 0; + unsigned int coords_with_flags = 0; + while (glyph < glyph_end) + { + uint8_t flag = *glyph; + glyph++; + + unsigned int repeat = 1; + if (flag & FLAG_REPEAT) + { + if (unlikely (glyph >= glyph_end)) return hb_bytes_t (); + repeat = *glyph + 1; + glyph++; + } + + unsigned int xBytes, yBytes; + xBytes = yBytes = 0; + if (flag & FLAG_X_SHORT) xBytes = 1; + else if ((flag & FLAG_X_SAME) == 0) xBytes = 2; + + if (flag & FLAG_Y_SHORT) yBytes = 1; + else if ((flag & FLAG_Y_SAME) == 0) yBytes = 2; + + coord_bytes += (xBytes + yBytes) * repeat; + coords_with_flags += repeat; + if (coords_with_flags >= num_coordinates) break; + } + + if (unlikely (coords_with_flags != num_coordinates)) return hb_bytes_t (); + return bytes.sub_array (0, bytes.length + coord_bytes - (glyph_end - glyph)); + } + + /* zero instruction length */ + void drop_hints () + { + if (!has_instructions_length ()) return; + GlyphHeader &glyph_header = const_cast (header); + (HBUINT16 &) StructAtOffset (&glyph_header, instruction_len_offset ()) = 0; + } + + void drop_hints_bytes (hb_bytes_t &dest_start, hb_bytes_t &dest_end) const + { + unsigned int instructions_len = instructions_length (); + unsigned int glyph_length = length (instructions_len); + dest_start = bytes.sub_array (0, glyph_length - instructions_len); + dest_end = bytes.sub_array (glyph_length, bytes.length - glyph_length); + } + + void set_overlaps_flag () + { + if (unlikely (!header.numberOfContours)) return; + + unsigned flags_offset = length (instructions_length ()); + if (unlikely (flags_offset + 1 > bytes.length)) return; + + HBUINT8 &first_flag = (HBUINT8 &) StructAtOffset (&bytes, flags_offset); + first_flag = (uint8_t) first_flag | FLAG_OVERLAP_SIMPLE; + } + + static bool read_flags (const HBUINT8 *&p /* IN/OUT */, + hb_array_t points_ /* IN/OUT */, + const HBUINT8 *end) + { + unsigned count = points_.length; + for (unsigned int i = 0; i < count;) + { + if (unlikely (p + 1 > end)) return false; + uint8_t flag = *p++; + points_.arrayZ[i++].flag = flag; + if (flag & FLAG_REPEAT) + { + if (unlikely (p + 1 > end)) return false; + unsigned int repeat_count = *p++; + unsigned stop = hb_min (i + repeat_count, count); + for (; i < stop; i++) + points_.arrayZ[i].flag = flag; + } + } + return true; + } + + static bool read_points (const HBUINT8 *&p /* IN/OUT */, + hb_array_t points_ /* IN/OUT */, + const HBUINT8 *end, + float contour_point_t::*m, + const simple_glyph_flag_t short_flag, + const simple_glyph_flag_t same_flag) + { + int v = 0; + + unsigned count = points_.length; + for (unsigned i = 0; i < count; i++) + { + unsigned flag = points_.arrayZ[i].flag; + if (flag & short_flag) + { + if (unlikely (p + 1 > end)) return false; + if (flag & same_flag) + v += *p++; + else + v -= *p++; + } + else + { + if (!(flag & same_flag)) + { + if (unlikely (p + HBINT16::static_size > end)) return false; + v += *(const HBINT16 *) p; + p += HBINT16::static_size; + } + } + points_.arrayZ[i].*m = v; + } + return true; + } + + bool get_contour_points (contour_point_vector_t &points /* OUT */, + bool phantom_only = false) const + { + const HBUINT16 *endPtsOfContours = &StructAfter (header); + int num_contours = header.numberOfContours; + assert (num_contours > 0); + /* One extra item at the end, for the instruction-count below. */ + if (unlikely (!bytes.check_range (&endPtsOfContours[num_contours]))) return false; + unsigned int num_points = endPtsOfContours[num_contours - 1] + 1; + + unsigned old_length = points.length; + points.alloc (points.length + num_points + 4, true); // Allocate for phantom points, to avoid a possible copy + if (!points.resize (points.length + num_points, false)) return false; + auto points_ = points.as_array ().sub_array (old_length); + hb_memset (points_.arrayZ, 0, sizeof (contour_point_t) * num_points); + if (phantom_only) return true; + + for (int i = 0; i < num_contours; i++) + points_[endPtsOfContours[i]].is_end_point = true; + + /* Skip instructions */ + const HBUINT8 *p = &StructAtOffset (&endPtsOfContours[num_contours + 1], + endPtsOfContours[num_contours]); + + if (unlikely ((const char *) p < bytes.arrayZ)) return false; /* Unlikely overflow */ + const HBUINT8 *end = (const HBUINT8 *) (bytes.arrayZ + bytes.length); + if (unlikely (p >= end)) return false; + + /* Read x & y coordinates */ + return read_flags (p, points_, end) + && read_points (p, points_, end, &contour_point_t::x, + FLAG_X_SHORT, FLAG_X_SAME) + && read_points (p, points_, end, &contour_point_t::y, + FLAG_Y_SHORT, FLAG_Y_SAME); + } + + static void encode_coord (int value, + unsigned &flag, + const simple_glyph_flag_t short_flag, + const simple_glyph_flag_t same_flag, + hb_vector_t &coords /* OUT */) + { + if (value == 0) + { + flag |= same_flag; + } + else if (value >= -255 && value <= 255) + { + flag |= short_flag; + if (value > 0) flag |= same_flag; + else value = -value; + + coords.arrayZ[coords.length++] = (uint8_t) value; + } + else + { + int16_t val = value; + coords.arrayZ[coords.length++] = val >> 8; + coords.arrayZ[coords.length++] = val & 0xff; + } + } + + static void encode_flag (unsigned flag, + unsigned &repeat, + unsigned lastflag, + hb_vector_t &flags /* OUT */) + { + if (flag == lastflag && repeat != 255) + { + repeat++; + if (repeat == 1) + { + /* We know there's room. */ + flags.arrayZ[flags.length++] = flag; + } + else + { + unsigned len = flags.length; + flags.arrayZ[len-2] = flag | FLAG_REPEAT; + flags.arrayZ[len-1] = repeat; + } + } + else + { + repeat = 0; + flags.arrayZ[flags.length++] = flag; + } + } + + bool compile_bytes_with_deltas (const contour_point_vector_t &all_points, + bool no_hinting, + hb_bytes_t &dest_bytes /* OUT */) + { + if (header.numberOfContours == 0 || all_points.length <= 4) + { + dest_bytes = hb_bytes_t (); + return true; + } + unsigned num_points = all_points.length - 4; + + hb_vector_t flags, x_coords, y_coords; + if (unlikely (!flags.alloc (num_points, true))) return false; + if (unlikely (!x_coords.alloc (2*num_points, true))) return false; + if (unlikely (!y_coords.alloc (2*num_points, true))) return false; + + unsigned lastflag = 255, repeat = 0; + int prev_x = 0, prev_y = 0; + + for (unsigned i = 0; i < num_points; i++) + { + unsigned flag = all_points.arrayZ[i].flag; + flag &= FLAG_ON_CURVE | FLAG_OVERLAP_SIMPLE | FLAG_CUBIC; + + int cur_x = roundf (all_points.arrayZ[i].x); + int cur_y = roundf (all_points.arrayZ[i].y); + encode_coord (cur_x - prev_x, flag, FLAG_X_SHORT, FLAG_X_SAME, x_coords); + encode_coord (cur_y - prev_y, flag, FLAG_Y_SHORT, FLAG_Y_SAME, y_coords); + encode_flag (flag, repeat, lastflag, flags); + + prev_x = cur_x; + prev_y = cur_y; + lastflag = flag; + } + + unsigned len_before_instrs = 2 * header.numberOfContours + 2; + unsigned len_instrs = instructions_length (); + unsigned total_len = len_before_instrs + flags.length + x_coords.length + y_coords.length; + + if (!no_hinting) + total_len += len_instrs; + + char *p = (char *) hb_malloc (total_len); + if (unlikely (!p)) return false; + + const char *src = bytes.arrayZ + GlyphHeader::static_size; + char *cur = p; + hb_memcpy (p, src, len_before_instrs); + + cur += len_before_instrs; + src += len_before_instrs; + + if (!no_hinting) + { + hb_memcpy (cur, src, len_instrs); + cur += len_instrs; + } + + hb_memcpy (cur, flags.arrayZ, flags.length); + cur += flags.length; + + hb_memcpy (cur, x_coords.arrayZ, x_coords.length); + cur += x_coords.length; + + hb_memcpy (cur, y_coords.arrayZ, y_coords.length); + + dest_bytes = hb_bytes_t (p, total_len); + return true; + } +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_SIMPLEGLYPH_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh b/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh new file mode 100644 index 0000000000..26dc374eab --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh @@ -0,0 +1,152 @@ +#ifndef OT_GLYF_SUBSETGLYPH_HH +#define OT_GLYF_SUBSETGLYPH_HH + + +#include "../../hb-open-type.hh" + + +namespace OT { + +struct glyf_accelerator_t; + +namespace glyf_impl { + + +struct SubsetGlyph +{ + hb_codepoint_t old_gid; + Glyph source_glyph; + hb_bytes_t dest_start; /* region of source_glyph to copy first */ + hb_bytes_t dest_end; /* region of source_glyph to copy second */ + bool allocated; + + bool serialize (hb_serialize_context_t *c, + bool use_short_loca, + const hb_subset_plan_t *plan) + { + TRACE_SERIALIZE (this); + + hb_bytes_t dest_glyph = dest_start.copy (c); + hb_bytes_t end_copy = dest_end.copy (c); + if (!end_copy.arrayZ || !dest_glyph.arrayZ) { + return false; + } + + dest_glyph = hb_bytes_t (&dest_glyph, dest_glyph.length + end_copy.length); + unsigned int pad_length = use_short_loca ? padding () : 0; + DEBUG_MSG (SUBSET, nullptr, "serialize %u byte glyph, width %u pad %u", dest_glyph.length, dest_glyph.length + pad_length, pad_length); + + HBUINT8 pad; + pad = 0; + while (pad_length > 0) + { + c->embed (pad); + pad_length--; + } + + if (unlikely (!dest_glyph.length)) return_trace (true); + + /* update components gids. */ + for (auto &_ : Glyph (dest_glyph).get_composite_iterator ()) + { + hb_codepoint_t new_gid; + if (plan->new_gid_for_old_gid (_.get_gid(), &new_gid)) + const_cast (_).set_gid (new_gid); + } +#ifndef HB_NO_VAR_COMPOSITES + for (auto &_ : Glyph (dest_glyph).get_var_composite_iterator ()) + { + hb_codepoint_t new_gid; + if (plan->new_gid_for_old_gid (_.get_gid(), &new_gid)) + const_cast (_).set_gid (new_gid); + } +#endif + +#ifndef HB_NO_BEYOND_64K + auto it = Glyph (dest_glyph).get_composite_iterator (); + if (it) + { + /* lower GID24 to GID16 in components if possible. + * + * TODO: VarComposite. Not as critical, since VarComposite supports + * gid24 from the first version. */ + char *p = it ? (char *) &*it : nullptr; + char *q = p; + const char *end = dest_glyph.arrayZ + dest_glyph.length; + while (it) + { + auto &rec = const_cast (*it); + ++it; + + q += rec.get_size (); + + rec.lower_gid_24_to_16 (); + + unsigned size = rec.get_size (); + + memmove (p, &rec, size); + + p += size; + } + memmove (p, q, end - q); + p += end - q; + + /* We want to shorten the glyph, but we can't do that without + * updating the length in the loca table, which is already + * written out :-(. So we just fill the rest of the glyph with + * harmless instructions, since that's what they will be + * interpreted as. + * + * Should move the lowering to _populate_subset_glyphs() to + * fix this issue. */ + + hb_memset (p, 0x7A /* TrueType instruction ROFF; harmless */, end - p); + p += end - p; + dest_glyph = hb_bytes_t (dest_glyph.arrayZ, p - (char *) dest_glyph.arrayZ); + + // TODO: Padding; & trim serialized bytes. + // TODO: Update length in loca. Ugh. + } +#endif + + if (plan->flags & HB_SUBSET_FLAGS_NO_HINTING) + Glyph (dest_glyph).drop_hints (); + + if (plan->flags & HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG) + Glyph (dest_glyph).set_overlaps_flag (); + + return_trace (true); + } + + bool compile_bytes_with_deltas (const hb_subset_plan_t *plan, + hb_font_t *font, + const glyf_accelerator_t &glyf) + { + allocated = source_glyph.compile_bytes_with_deltas (plan, font, glyf, dest_start, dest_end); + return allocated; + } + + void free_compiled_bytes () + { + if (likely (allocated)) { + allocated = false; + dest_start.fini (); + dest_end.fini (); + } + } + + void drop_hints_bytes () + { source_glyph.drop_hints_bytes (dest_start, dest_end); } + + unsigned int length () const { return dest_start.length + dest_end.length; } + /* pad to 2 to ensure 2-byte loca will be ok */ + unsigned int padding () const { return length () % 2; } + unsigned int padded_size () const { return length () + padding (); } +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_SUBSETGLYPH_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh b/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh new file mode 100644 index 0000000000..6dc6fd9ded --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh @@ -0,0 +1,401 @@ +#ifndef OT_GLYF_VARCOMPOSITEGLYPH_HH +#define OT_GLYF_VARCOMPOSITEGLYPH_HH + + +#include "../../hb-open-type.hh" +#include "coord-setter.hh" + + +namespace OT { +namespace glyf_impl { + + +struct VarCompositeGlyphRecord +{ + protected: + enum var_composite_glyph_flag_t + { + USE_MY_METRICS = 0x0001, + AXIS_INDICES_ARE_SHORT = 0x0002, + UNIFORM_SCALE = 0x0004, + HAVE_TRANSLATE_X = 0x0008, + HAVE_TRANSLATE_Y = 0x0010, + HAVE_ROTATION = 0x0020, + HAVE_SCALE_X = 0x0040, + HAVE_SCALE_Y = 0x0080, + HAVE_SKEW_X = 0x0100, + HAVE_SKEW_Y = 0x0200, + HAVE_TCENTER_X = 0x0400, + HAVE_TCENTER_Y = 0x0800, + GID_IS_24BIT = 0x1000, + AXES_HAVE_VARIATION = 0x2000, + RESET_UNSPECIFIED_AXES = 0x4000, + }; + + public: + + unsigned int get_size () const + { + unsigned fl = flags; + unsigned int size = min_size; + + unsigned axis_width = (fl & AXIS_INDICES_ARE_SHORT) ? 4 : 3; + size += numAxes * axis_width; + + if (fl & GID_IS_24BIT) size += 1; + + // 2 bytes each for the following flags + fl = fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y | + HAVE_ROTATION | + HAVE_SCALE_X | HAVE_SCALE_Y | + HAVE_SKEW_X | HAVE_SKEW_Y | + HAVE_TCENTER_X | HAVE_TCENTER_Y); + size += hb_popcount (fl) * 2; + + return size; + } + + bool has_more () const { return true; } + + bool is_use_my_metrics () const { return flags & USE_MY_METRICS; } + bool is_reset_unspecified_axes () const { return flags & RESET_UNSPECIFIED_AXES; } + + hb_codepoint_t get_gid () const + { + if (flags & GID_IS_24BIT) + return * (const HBGlyphID24 *) &pad; + else + return * (const HBGlyphID16 *) &pad; + } + + void set_gid (hb_codepoint_t gid) + { + if (flags & GID_IS_24BIT) + * (HBGlyphID24 *) &pad = gid; + else + * (HBGlyphID16 *) &pad = gid; + } + + unsigned get_numAxes () const + { + return numAxes; + } + + unsigned get_num_points () const + { + unsigned fl = flags; + unsigned num = 0; + if (fl & AXES_HAVE_VARIATION) num += numAxes; + + /* Hopefully faster code, relying on the value of the flags. */ + fl = (((fl & (HAVE_TRANSLATE_Y | HAVE_SCALE_Y | HAVE_SKEW_Y | HAVE_TCENTER_Y)) >> 1) | fl) & + (HAVE_TRANSLATE_X | HAVE_ROTATION | HAVE_SCALE_X | HAVE_SKEW_X | HAVE_TCENTER_X); + num += hb_popcount (fl); + return num; + + /* Slower but more readable code. */ + if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y)) num++; + if (fl & HAVE_ROTATION) num++; + if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y)) num++; + if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y)) num++; + if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y)) num++; + return num; + } + + void transform_points (hb_array_t record_points, + hb_array_t points) const + { + float matrix[4]; + contour_point_t trans; + + get_transformation_from_points (record_points.arrayZ, matrix, trans); + + auto arrayZ = points.arrayZ; + unsigned count = points.length; + + if (matrix[0] != 1.f || matrix[1] != 0.f || + matrix[2] != 0.f || matrix[3] != 1.f) + for (unsigned i = 0; i < count; i++) + arrayZ[i].transform (matrix); + + if (trans.x != 0.f || trans.y != 0.f) + for (unsigned i = 0; i < count; i++) + arrayZ[i].translate (trans); + } + + static inline void transform (float (&matrix)[4], contour_point_t &trans, + float (other)[6]) + { + // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L268 + float xx1 = other[0]; + float xy1 = other[1]; + float yx1 = other[2]; + float yy1 = other[3]; + float dx1 = other[4]; + float dy1 = other[5]; + float xx2 = matrix[0]; + float xy2 = matrix[1]; + float yx2 = matrix[2]; + float yy2 = matrix[3]; + float dx2 = trans.x; + float dy2 = trans.y; + + matrix[0] = xx1*xx2 + xy1*yx2; + matrix[1] = xx1*xy2 + xy1*yy2; + matrix[2] = yx1*xx2 + yy1*yx2; + matrix[3] = yx1*xy2 + yy1*yy2; + trans.x = xx2*dx1 + yx2*dy1 + dx2; + trans.y = xy2*dx1 + yy2*dy1 + dy2; + } + + static void translate (float (&matrix)[4], contour_point_t &trans, + float translateX, float translateY) + { + if (!translateX && !translateY) + return; + + trans.x += matrix[0] * translateX + matrix[2] * translateY; + trans.y += matrix[1] * translateX + matrix[3] * translateY; + } + + static void scale (float (&matrix)[4], contour_point_t &trans, + float scaleX, float scaleY) + { + if (scaleX == 1.f && scaleY == 1.f) + return; + + matrix[0] *= scaleX; + matrix[1] *= scaleX; + matrix[2] *= scaleY; + matrix[3] *= scaleY; + } + + static void rotate (float (&matrix)[4], contour_point_t &trans, + float rotation) + { + if (!rotation) + return; + + // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L240 + rotation = rotation * HB_PI; + float c; + float s; +#ifdef HAVE_SINCOSF + sincosf (rotation, &s, &c); +#else + c = cosf (rotation); + s = sinf (rotation); +#endif + float other[6] = {c, s, -s, c, 0.f, 0.f}; + transform (matrix, trans, other); + } + + static void skew (float (&matrix)[4], contour_point_t &trans, + float skewX, float skewY) + { + if (!skewX && !skewY) + return; + + // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L255 + skewX = skewX * HB_PI; + skewY = skewY * HB_PI; + float other[6] = {1.f, + skewY ? tanf (skewY) : 0.f, + skewX ? tanf (skewX) : 0.f, + 1.f, + 0.f, 0.f}; + transform (matrix, trans, other); + } + + bool get_points (contour_point_vector_t &points) const + { + unsigned num_points = get_num_points (); + + points.alloc (points.length + num_points + 4); // For phantom points + if (unlikely (!points.resize (points.length + num_points, false))) return false; + contour_point_t *rec_points = points.arrayZ + (points.length - num_points); + memset (rec_points, 0, num_points * sizeof (rec_points[0])); + + unsigned fl = flags; + + unsigned num_axes = numAxes; + unsigned axis_width = (fl & AXIS_INDICES_ARE_SHORT) ? 2 : 1; + unsigned axes_size = num_axes * axis_width; + + const F2DOT14 *q = (const F2DOT14 *) (axes_size + + (fl & GID_IS_24BIT ? 3 : 2) + + (const HBUINT8 *) &pad); + + unsigned count = num_axes; + if (fl & AXES_HAVE_VARIATION) + { + for (unsigned i = 0; i < count; i++) + rec_points++->x = q++->to_int (); + } + else + q += count; + + const HBUINT16 *p = (const HBUINT16 *) q; + + if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y)) + { + int translateX = (fl & HAVE_TRANSLATE_X) ? * (const FWORD *) p++ : 0; + int translateY = (fl & HAVE_TRANSLATE_Y) ? * (const FWORD *) p++ : 0; + rec_points->x = translateX; + rec_points->y = translateY; + rec_points++; + } + if (fl & HAVE_ROTATION) + { + int rotation = (fl & HAVE_ROTATION) ? ((const F4DOT12 *) p++)->to_int () : 0; + rec_points->x = rotation; + rec_points++; + } + if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y)) + { + int scaleX = (fl & HAVE_SCALE_X) ? ((const F6DOT10 *) p++)->to_int () : 1 << 10; + int scaleY = (fl & HAVE_SCALE_Y) ? ((const F6DOT10 *) p++)->to_int () : 1 << 10; + if ((fl & UNIFORM_SCALE) && !(fl & HAVE_SCALE_Y)) + scaleY = scaleX; + rec_points->x = scaleX; + rec_points->y = scaleY; + rec_points++; + } + if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y)) + { + int skewX = (fl & HAVE_SKEW_X) ? ((const F4DOT12 *) p++)->to_int () : 0; + int skewY = (fl & HAVE_SKEW_Y) ? ((const F4DOT12 *) p++)->to_int () : 0; + rec_points->x = skewX; + rec_points->y = skewY; + rec_points++; + } + if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y)) + { + int tCenterX = (fl & HAVE_TCENTER_X) ? * (const FWORD *) p++ : 0; + int tCenterY = (fl & HAVE_TCENTER_Y) ? * (const FWORD *) p++ : 0; + rec_points->x = tCenterX; + rec_points->y = tCenterY; + rec_points++; + } + + return true; + } + + void get_transformation_from_points (const contour_point_t *rec_points, + float (&matrix)[4], contour_point_t &trans) const + { + unsigned fl = flags; + + if (fl & AXES_HAVE_VARIATION) + rec_points += numAxes; + + matrix[0] = matrix[3] = 1.f; + matrix[1] = matrix[2] = 0.f; + trans.init (0.f, 0.f); + + float translateX = 0.f; + float translateY = 0.f; + float rotation = 0.f; + float scaleX = 1.f; + float scaleY = 1.f; + float skewX = 0.f; + float skewY = 0.f; + float tCenterX = 0.f; + float tCenterY = 0.f; + + if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y)) + { + translateX = rec_points->x; + translateY = rec_points->y; + rec_points++; + } + if (fl & HAVE_ROTATION) + { + rotation = rec_points->x / (1 << 12); + rec_points++; + } + if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y)) + { + scaleX = rec_points->x / (1 << 10); + scaleY = rec_points->y / (1 << 10); + rec_points++; + } + if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y)) + { + skewX = rec_points->x / (1 << 12); + skewY = rec_points->y / (1 << 12); + rec_points++; + } + if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y)) + { + tCenterX = rec_points->x; + tCenterY = rec_points->y; + rec_points++; + } + + translate (matrix, trans, translateX + tCenterX, translateY + tCenterY); + rotate (matrix, trans, rotation); + scale (matrix, trans, scaleX, scaleY); + skew (matrix, trans, -skewX, skewY); + translate (matrix, trans, -tCenterX, -tCenterY); + } + + void set_variations (coord_setter_t &setter, + hb_array_t rec_points) const + { + bool have_variations = flags & AXES_HAVE_VARIATION; + unsigned axis_width = (flags & AXIS_INDICES_ARE_SHORT) ? 2 : 1; + unsigned num_axes = numAxes; + + const HBUINT8 *p = (const HBUINT8 *) (((HBUINT8 *) &numAxes) + numAxes.static_size + (flags & GID_IS_24BIT ? 3 : 2)); + const HBUINT16 *q = (const HBUINT16 *) (((HBUINT8 *) &numAxes) + numAxes.static_size + (flags & GID_IS_24BIT ? 3 : 2)); + + const F2DOT14 *a = (const F2DOT14 *) ((HBUINT8 *) (axis_width == 1 ? (p + num_axes) : (HBUINT8 *) (q + num_axes))); + + unsigned count = num_axes; + for (unsigned i = 0; i < count; i++) + { + unsigned axis_index = axis_width == 1 ? (unsigned) *p++ : (unsigned) *q++; + + signed v = have_variations ? rec_points.arrayZ[i].x : a++->to_int (); + + v = hb_clamp (v, -(1<<14), (1<<14)); + setter[axis_index] = v; + } + } + + protected: + HBUINT16 flags; + HBUINT8 numAxes; + HBUINT16 pad; + public: + DEFINE_SIZE_MIN (5); +}; + +using var_composite_iter_t = composite_iter_tmpl; + +struct VarCompositeGlyph +{ + const GlyphHeader &header; + hb_bytes_t bytes; + VarCompositeGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) : + header (header_), bytes (bytes_) {} + + var_composite_iter_t iter () const + { return var_composite_iter_t (bytes, &StructAfter (header)); } + + const hb_bytes_t trim_padding () const + { + unsigned length = GlyphHeader::static_size; + for (auto &comp : iter ()) + length += comp.get_size (); + return bytes.sub_array (0, length); + } +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_VARCOMPOSITEGLYPH_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/composite-iter.hh b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh new file mode 100644 index 0000000000..d05701f3d1 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh @@ -0,0 +1,68 @@ +#ifndef OT_GLYF_COMPOSITE_ITER_HH +#define OT_GLYF_COMPOSITE_ITER_HH + + +#include "../../hb.hh" + + +namespace OT { +namespace glyf_impl { + + +template +struct composite_iter_tmpl : hb_iter_with_fallback_t, + const CompositeGlyphRecord &> +{ + typedef const CompositeGlyphRecord *__item_t__; + composite_iter_tmpl (hb_bytes_t glyph_, __item_t__ current_) : + glyph (glyph_), current (nullptr), current_size (0) + { + set_current (current_); + } + + composite_iter_tmpl () : glyph (hb_bytes_t ()), current (nullptr), current_size (0) {} + + const CompositeGlyphRecord & __item__ () const { return *current; } + bool __more__ () const { return current; } + void __next__ () + { + if (!current->has_more ()) { current = nullptr; return; } + + set_current (&StructAtOffset (current, current_size)); + } + composite_iter_tmpl __end__ () const { return composite_iter_tmpl (); } + bool operator != (const composite_iter_tmpl& o) const + { return current != o.current; } + + + void set_current (__item_t__ current_) + { + if (!glyph.check_range (current_, CompositeGlyphRecord::min_size)) + { + current = nullptr; + current_size = 0; + return; + } + unsigned size = current_->get_size (); + if (!glyph.check_range (current_, size)) + { + current = nullptr; + current_size = 0; + return; + } + + current = current_; + current_size = size; + } + + private: + hb_bytes_t glyph; + __item_t__ current; + unsigned current_size; +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + +#endif /* OT_GLYF_COMPOSITE_ITER_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/coord-setter.hh b/gfx/harfbuzz/src/OT/glyf/coord-setter.hh new file mode 100644 index 0000000000..df64ed5af7 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/coord-setter.hh @@ -0,0 +1,34 @@ +#ifndef OT_GLYF_COORD_SETTER_HH +#define OT_GLYF_COORD_SETTER_HH + + +#include "../../hb.hh" + + +namespace OT { +namespace glyf_impl { + + +struct coord_setter_t +{ + coord_setter_t (hb_array_t coords) : + coords (coords) {} + + int& operator [] (unsigned idx) + { + if (coords.length < idx + 1) + coords.resize (idx + 1); + return coords[idx]; + } + + hb_array_t get_coords () + { return coords.as_array (); } + + hb_vector_t coords; +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + +#endif /* OT_GLYF_COORD_SETTER_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh b/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh new file mode 100644 index 0000000000..30106b2b98 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh @@ -0,0 +1,104 @@ +#ifndef OT_GLYF_GLYF_HELPERS_HH +#define OT_GLYF_GLYF_HELPERS_HH + + +#include "../../hb-open-type.hh" +#include "../../hb-subset-plan.hh" + +#include "loca.hh" + + +namespace OT { +namespace glyf_impl { + + +template +static void +_write_loca (IteratorIn&& it, bool short_offsets, IteratorOut&& dest) +{ + unsigned right_shift = short_offsets ? 1 : 0; + unsigned int offset = 0; + dest << 0; + + it + | hb_map ([=, &offset] (unsigned int padded_size) + { + offset += padded_size; + DEBUG_MSG (SUBSET, nullptr, "loca entry offset %u", offset); + return offset >> right_shift; + }) + | hb_sink (dest) + ; +} + +static bool +_add_head_and_set_loca_version (hb_subset_plan_t *plan, bool use_short_loca) +{ + hb_blob_t *head_blob = hb_sanitize_context_t ().reference_table (plan->source); + hb_blob_t *head_prime_blob = hb_blob_copy_writable_or_fail (head_blob); + hb_blob_destroy (head_blob); + + if (unlikely (!head_prime_blob)) + return false; + + head *head_prime = (head *) hb_blob_get_data_writable (head_prime_blob, nullptr); + head_prime->indexToLocFormat = use_short_loca ? 0 : 1; + if (plan->normalized_coords) + { + head_prime->xMin = plan->head_maxp_info.xMin; + head_prime->xMax = plan->head_maxp_info.xMax; + head_prime->yMin = plan->head_maxp_info.yMin; + head_prime->yMax = plan->head_maxp_info.yMax; + + unsigned orig_flag = head_prime->flags; + if (plan->head_maxp_info.allXMinIsLsb) + orig_flag |= 1 << 1; + else + orig_flag &= ~(1 << 1); + head_prime->flags = orig_flag; + } + bool success = plan->add_table (HB_OT_TAG_head, head_prime_blob); + + hb_blob_destroy (head_prime_blob); + return success; +} + +template +static bool +_add_loca_and_head (hb_subset_plan_t * plan, Iterator padded_offsets, bool use_short_loca) +{ + unsigned num_offsets = padded_offsets.len () + 1; + unsigned entry_size = use_short_loca ? 2 : 4; + char *loca_prime_data = (char *) hb_calloc (entry_size, num_offsets); + + if (unlikely (!loca_prime_data)) return false; + + DEBUG_MSG (SUBSET, nullptr, "loca entry_size %u num_offsets %u size %u", + entry_size, num_offsets, entry_size * num_offsets); + + if (use_short_loca) + _write_loca (padded_offsets, true, hb_array ((HBUINT16 *) loca_prime_data, num_offsets)); + else + _write_loca (padded_offsets, false, hb_array ((HBUINT32 *) loca_prime_data, num_offsets)); + + hb_blob_t *loca_blob = hb_blob_create (loca_prime_data, + entry_size * num_offsets, + HB_MEMORY_MODE_WRITABLE, + loca_prime_data, + hb_free); + + bool result = plan->add_table (HB_OT_TAG_loca, loca_blob) + && _add_head_and_set_loca_version (plan, use_short_loca); + + hb_blob_destroy (loca_blob); + return result; +} + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_GLYF_HELPERS_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/glyf.hh b/gfx/harfbuzz/src/OT/glyf/glyf.hh new file mode 100644 index 0000000000..dd08dda6ee --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/glyf.hh @@ -0,0 +1,504 @@ +#ifndef OT_GLYF_GLYF_HH +#define OT_GLYF_GLYF_HH + + +#include "../../hb-open-type.hh" +#include "../../hb-ot-head-table.hh" +#include "../../hb-ot-hmtx-table.hh" +#include "../../hb-ot-var-gvar-table.hh" +#include "../../hb-draw.hh" +#include "../../hb-paint.hh" + +#include "glyf-helpers.hh" +#include "Glyph.hh" +#include "SubsetGlyph.hh" +#include "loca.hh" +#include "path-builder.hh" + + +namespace OT { + + +/* + * glyf -- TrueType Glyph Data + * https://docs.microsoft.com/en-us/typography/opentype/spec/glyf + */ +#define HB_OT_TAG_glyf HB_TAG('g','l','y','f') + +struct glyf +{ + friend struct glyf_accelerator_t; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_glyf; + + static bool has_valid_glyf_format(const hb_face_t* face) + { + const OT::head &head = *face->table.head; + return head.indexToLocFormat <= 1 && head.glyphDataFormat <= 1; + } + + bool sanitize (hb_sanitize_context_t *c HB_UNUSED) const + { + TRACE_SANITIZE (this); + /* Runtime checks as eager sanitizing each glyph is costy */ + return_trace (true); + } + + /* requires source of SubsetGlyph complains the identifier isn't declared */ + template + bool serialize (hb_serialize_context_t *c, + Iterator it, + bool use_short_loca, + const hb_subset_plan_t *plan) + { + TRACE_SERIALIZE (this); + + unsigned init_len = c->length (); + for (auto &_ : it) + if (unlikely (!_.serialize (c, use_short_loca, plan))) + return false; + + /* As a special case when all glyph in the font are empty, add a zero byte + * to the table, so that OTS doesn’t reject it, and to make the table work + * on Windows as well. + * See https://github.com/khaledhosny/ots/issues/52 */ + if (init_len == c->length ()) + { + HBUINT8 empty_byte; + empty_byte = 0; + c->copy (empty_byte); + } + return_trace (true); + } + + /* Byte region(s) per glyph to output + unpadded, hints removed if so requested + If we fail to process a glyph we produce an empty (0-length) glyph */ + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + if (!has_valid_glyf_format (c->plan->source)) { + // glyf format is unknown don't attempt to subset it. + DEBUG_MSG (SUBSET, nullptr, + "unkown glyf format, dropping from subset."); + return_trace (false); + } + + glyf *glyf_prime = c->serializer->start_embed (); + if (unlikely (!c->serializer->check_success (glyf_prime))) return_trace (false); + + hb_font_t *font = nullptr; + if (c->plan->normalized_coords) + { + font = _create_font_for_instancing (c->plan); + if (unlikely (!font)) return false; + } + + hb_vector_t padded_offsets; + unsigned num_glyphs = c->plan->num_output_glyphs (); + if (unlikely (!padded_offsets.resize (num_glyphs))) + { + hb_font_destroy (font); + return false; + } + + hb_vector_t glyphs; + if (!_populate_subset_glyphs (c->plan, font, glyphs)) + { + hb_font_destroy (font); + return false; + } + + if (font) + hb_font_destroy (font); + + unsigned max_offset = 0; + for (unsigned i = 0; i < num_glyphs; i++) + { + padded_offsets[i] = glyphs[i].padded_size (); + max_offset += padded_offsets[i]; + } + + bool use_short_loca = false; + if (likely (!c->plan->force_long_loca)) + use_short_loca = max_offset < 0x1FFFF; + + if (!use_short_loca) { + for (unsigned i = 0; i < num_glyphs; i++) + padded_offsets[i] = glyphs[i].length (); + } + + bool result = glyf_prime->serialize (c->serializer, glyphs.writer (), use_short_loca, c->plan); + if (c->plan->normalized_coords && !c->plan->pinned_at_default) + _free_compiled_subset_glyphs (glyphs); + + if (!result) return false; + + if (unlikely (c->serializer->in_error ())) return_trace (false); + + return_trace (c->serializer->check_success (glyf_impl::_add_loca_and_head (c->plan, + padded_offsets.iter (), + use_short_loca))); + } + + bool + _populate_subset_glyphs (const hb_subset_plan_t *plan, + hb_font_t *font, + hb_vector_t &glyphs /* OUT */) const; + + hb_font_t * + _create_font_for_instancing (const hb_subset_plan_t *plan) const; + + void _free_compiled_subset_glyphs (hb_vector_t &glyphs) const + { + for (unsigned i = 0; i < glyphs.length; i++) + glyphs[i].free_compiled_bytes (); + } + + protected: + UnsizedArrayOf + dataZ; /* Glyphs data. */ + public: + DEFINE_SIZE_MIN (0); /* In reality, this is UNBOUNDED() type; but since we always + * check the size externally, allow Null() object of it by + * defining it _MIN instead. */ +}; + +struct glyf_accelerator_t +{ + glyf_accelerator_t (hb_face_t *face) + { + short_offset = false; + num_glyphs = 0; + loca_table = nullptr; + glyf_table = nullptr; +#ifndef HB_NO_VAR + gvar = nullptr; +#endif + hmtx = nullptr; +#ifndef HB_NO_VERTICAL + vmtx = nullptr; +#endif + const OT::head &head = *face->table.head; + if (!glyf::has_valid_glyf_format (face)) + /* Unknown format. Leave num_glyphs=0, that takes care of disabling us. */ + return; + short_offset = 0 == head.indexToLocFormat; + + loca_table = face->table.loca.get_blob (); // Needs no destruct! + glyf_table = hb_sanitize_context_t ().reference_table (face); +#ifndef HB_NO_VAR + gvar = face->table.gvar; +#endif + hmtx = face->table.hmtx; +#ifndef HB_NO_VERTICAL + vmtx = face->table.vmtx; +#endif + + num_glyphs = hb_max (1u, loca_table.get_length () / (short_offset ? 2 : 4)) - 1; + num_glyphs = hb_min (num_glyphs, face->get_num_glyphs ()); + } + ~glyf_accelerator_t () + { + glyf_table.destroy (); + } + + bool has_data () const { return num_glyphs; } + + protected: + template + bool get_points (hb_font_t *font, hb_codepoint_t gid, T consumer) const + { + if (gid >= num_glyphs) return false; + + /* Making this allocfree is not that easy + https://github.com/harfbuzz/harfbuzz/issues/2095 + mostly because of gvar handling in VF fonts, + perhaps a separate path for non-VF fonts can be considered */ + contour_point_vector_t all_points; + + bool phantom_only = !consumer.is_consuming_contour_points (); + if (unlikely (!glyph_for_gid (gid).get_points (font, *this, all_points, nullptr, nullptr, nullptr, true, true, phantom_only))) + return false; + + if (consumer.is_consuming_contour_points ()) + { + unsigned count = all_points.length; + assert (count >= glyf_impl::PHANTOM_COUNT); + count -= glyf_impl::PHANTOM_COUNT; + for (unsigned point_index = 0; point_index < count; point_index++) + consumer.consume_point (all_points[point_index]); + consumer.points_end (); + } + + /* Where to write phantoms, nullptr if not requested */ + contour_point_t *phantoms = consumer.get_phantoms_sink (); + if (phantoms) + for (unsigned i = 0; i < glyf_impl::PHANTOM_COUNT; ++i) + phantoms[i] = all_points[all_points.length - glyf_impl::PHANTOM_COUNT + i]; + + return true; + } + + public: + +#ifndef HB_NO_VAR + struct points_aggregator_t + { + hb_font_t *font; + hb_glyph_extents_t *extents; + contour_point_t *phantoms; + bool scaled; + + struct contour_bounds_t + { + contour_bounds_t () { min_x = min_y = FLT_MAX; max_x = max_y = -FLT_MAX; } + + void add (const contour_point_t &p) + { + min_x = hb_min (min_x, p.x); + min_y = hb_min (min_y, p.y); + max_x = hb_max (max_x, p.x); + max_y = hb_max (max_y, p.y); + } + + bool empty () const { return (min_x >= max_x) || (min_y >= max_y); } + + void get_extents (hb_font_t *font, hb_glyph_extents_t *extents, bool scaled) + { + if (unlikely (empty ())) + { + extents->width = 0; + extents->x_bearing = 0; + extents->height = 0; + extents->y_bearing = 0; + return; + } + { + extents->x_bearing = roundf (min_x); + extents->width = roundf (max_x - extents->x_bearing); + extents->y_bearing = roundf (max_y); + extents->height = roundf (min_y - extents->y_bearing); + + if (scaled) + font->scale_glyph_extents (extents); + } + } + + protected: + float min_x, min_y, max_x, max_y; + } bounds; + + points_aggregator_t (hb_font_t *font_, hb_glyph_extents_t *extents_, contour_point_t *phantoms_, bool scaled_) + { + font = font_; + extents = extents_; + phantoms = phantoms_; + scaled = scaled_; + if (extents) bounds = contour_bounds_t (); + } + + void consume_point (const contour_point_t &point) { bounds.add (point); } + void points_end () { bounds.get_extents (font, extents, scaled); } + + bool is_consuming_contour_points () { return extents; } + contour_point_t *get_phantoms_sink () { return phantoms; } + }; + + unsigned + get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t gid, bool is_vertical) const + { + if (unlikely (gid >= num_glyphs)) return 0; + + bool success = false; + + contour_point_t phantoms[glyf_impl::PHANTOM_COUNT]; + if (font->num_coords) + success = get_points (font, gid, points_aggregator_t (font, nullptr, phantoms, false)); + + if (unlikely (!success)) + return +#ifndef HB_NO_VERTICAL + is_vertical ? vmtx->get_advance_without_var_unscaled (gid) : +#endif + hmtx->get_advance_without_var_unscaled (gid); + + float result = is_vertical + ? phantoms[glyf_impl::PHANTOM_TOP].y - phantoms[glyf_impl::PHANTOM_BOTTOM].y + : phantoms[glyf_impl::PHANTOM_RIGHT].x - phantoms[glyf_impl::PHANTOM_LEFT].x; + return hb_clamp (roundf (result), 0.f, (float) UINT_MAX / 2); + } + + bool get_leading_bearing_with_var_unscaled (hb_font_t *font, hb_codepoint_t gid, bool is_vertical, int *lsb) const + { + if (unlikely (gid >= num_glyphs)) return false; + + hb_glyph_extents_t extents; + + contour_point_t phantoms[glyf_impl::PHANTOM_COUNT]; + if (unlikely (!get_points (font, gid, points_aggregator_t (font, &extents, phantoms, false)))) + return false; + + *lsb = is_vertical + ? roundf (phantoms[glyf_impl::PHANTOM_TOP].y) - extents.y_bearing + : roundf (phantoms[glyf_impl::PHANTOM_LEFT].x); + return true; + } +#endif + + bool get_leading_bearing_without_var_unscaled (hb_codepoint_t gid, bool is_vertical, int *lsb) const + { + if (unlikely (gid >= num_glyphs)) return false; + if (is_vertical) return false; // TODO Humm, what to do here? + + *lsb = glyph_for_gid (gid).get_header ()->xMin; + return true; + } + + public: + bool get_extents (hb_font_t *font, hb_codepoint_t gid, hb_glyph_extents_t *extents) const + { + if (unlikely (gid >= num_glyphs)) return false; + +#ifndef HB_NO_VAR + if (font->num_coords) + return get_points (font, gid, points_aggregator_t (font, extents, nullptr, true)); +#endif + return glyph_for_gid (gid).get_extents_without_var_scaled (font, *this, extents); + } + + bool paint_glyph (hb_font_t *font, hb_codepoint_t gid, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const + { + funcs->push_clip_glyph (data, gid, font); + funcs->color (data, true, foreground); + funcs->pop_clip (data); + + return true; + } + + const glyf_impl::Glyph + glyph_for_gid (hb_codepoint_t gid, bool needs_padding_removal = false) const + { + if (unlikely (gid >= num_glyphs)) return glyf_impl::Glyph (); + + unsigned int start_offset, end_offset; + + if (short_offset) + { + const HBUINT16 *offsets = (const HBUINT16 *) loca_table->dataZ.arrayZ; + start_offset = 2 * offsets[gid]; + end_offset = 2 * offsets[gid + 1]; + } + else + { + const HBUINT32 *offsets = (const HBUINT32 *) loca_table->dataZ.arrayZ; + start_offset = offsets[gid]; + end_offset = offsets[gid + 1]; + } + + if (unlikely (start_offset > end_offset || end_offset > glyf_table.get_length ())) + return glyf_impl::Glyph (); + + glyf_impl::Glyph glyph (hb_bytes_t ((const char *) this->glyf_table + start_offset, + end_offset - start_offset), gid); + return needs_padding_removal ? glyf_impl::Glyph (glyph.trim_padding (), gid) : glyph; + } + + bool + get_path (hb_font_t *font, hb_codepoint_t gid, hb_draw_session_t &draw_session) const + { return get_points (font, gid, glyf_impl::path_builder_t (font, draw_session)); } + +#ifndef HB_NO_VAR + const gvar_accelerator_t *gvar; +#endif + const hmtx_accelerator_t *hmtx; +#ifndef HB_NO_VERTICAL + const vmtx_accelerator_t *vmtx; +#endif + + private: + bool short_offset; + unsigned int num_glyphs; + hb_blob_ptr_t loca_table; + hb_blob_ptr_t glyf_table; +}; + + +inline bool +glyf::_populate_subset_glyphs (const hb_subset_plan_t *plan, + hb_font_t *font, + hb_vector_t& glyphs /* OUT */) const +{ + OT::glyf_accelerator_t glyf (plan->source); + unsigned num_glyphs = plan->num_output_glyphs (); + if (!glyphs.resize (num_glyphs)) return false; + + for (auto p : plan->glyph_map->iter ()) + { + unsigned new_gid = p.second; + glyf_impl::SubsetGlyph& subset_glyph = glyphs.arrayZ[new_gid]; + subset_glyph.old_gid = p.first; + + if (unlikely (new_gid == 0 && + !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE)) && + !plan->normalized_coords) + subset_glyph.source_glyph = glyf_impl::Glyph (); + else + { + /* If plan has an accelerator, the preprocessing step already trimmed glyphs. + * Don't trim them again! */ + subset_glyph.source_glyph = glyf.glyph_for_gid (subset_glyph.old_gid, !plan->accelerator); + } + + if (plan->flags & HB_SUBSET_FLAGS_NO_HINTING) + subset_glyph.drop_hints_bytes (); + else + subset_glyph.dest_start = subset_glyph.source_glyph.get_bytes (); + + if (font) + { + if (unlikely (!subset_glyph.compile_bytes_with_deltas (plan, font, glyf))) + { + // when pinned at default, only bounds are updated, thus no need to free + if (!plan->pinned_at_default) + _free_compiled_subset_glyphs (glyphs); + return false; + } + } + } + return true; +} + +inline hb_font_t * +glyf::_create_font_for_instancing (const hb_subset_plan_t *plan) const +{ + hb_font_t *font = hb_font_create (plan->source); + if (unlikely (font == hb_font_get_empty ())) return nullptr; + + hb_vector_t vars; + if (unlikely (!vars.alloc (plan->user_axes_location.get_population (), true))) + { + hb_font_destroy (font); + return nullptr; + } + + for (auto _ : plan->user_axes_location) + { + hb_variation_t var; + var.tag = _.first; + var.value = _.second; + vars.push (var); + } + +#ifndef HB_NO_VAR + hb_font_set_variations (font, vars.arrayZ, plan->user_axes_location.get_population ()); +#endif + return font; +} + + +} /* namespace OT */ + + +#endif /* OT_GLYF_GLYF_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/loca.hh b/gfx/harfbuzz/src/OT/glyf/loca.hh new file mode 100644 index 0000000000..4481cba8ed --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/loca.hh @@ -0,0 +1,43 @@ +#ifndef OT_GLYF_LOCA_HH +#define OT_GLYF_LOCA_HH + + +#include "../../hb-open-type.hh" + + +namespace OT { + + +/* + * loca -- Index to Location + * https://docs.microsoft.com/en-us/typography/opentype/spec/loca + */ +#define HB_OT_TAG_loca HB_TAG('l','o','c','a') + +struct loca +{ + friend struct glyf; + friend struct glyf_accelerator_t; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_loca; + + bool sanitize (hb_sanitize_context_t *c HB_UNUSED) const + { + TRACE_SANITIZE (this); + return_trace (true); + } + + protected: + UnsizedArrayOf + dataZ; /* Location data. */ + public: + DEFINE_SIZE_MIN (0); /* In reality, this is UNBOUNDED() type; but since we always + * check the size externally, allow Null() object of it by + * defining it _MIN instead. */ +}; + + +} /* namespace OT */ + + +#endif /* OT_GLYF_LOCA_HH */ diff --git a/gfx/harfbuzz/src/OT/glyf/path-builder.hh b/gfx/harfbuzz/src/OT/glyf/path-builder.hh new file mode 100644 index 0000000000..f7f732d336 --- /dev/null +++ b/gfx/harfbuzz/src/OT/glyf/path-builder.hh @@ -0,0 +1,189 @@ +#ifndef OT_GLYF_PATH_BUILDER_HH +#define OT_GLYF_PATH_BUILDER_HH + + +#include "../../hb.hh" + + +namespace OT { +namespace glyf_impl { + + +struct path_builder_t +{ + hb_font_t *font; + hb_draw_session_t *draw_session; + + struct optional_point_t + { + optional_point_t () {} + optional_point_t (float x_, float y_) : has_data (true), x (x_), y (y_) {} + operator bool () const { return has_data; } + + bool has_data = false; + float x = 0.; + float y = 0.; + + optional_point_t lerp (optional_point_t p, float t) + { return optional_point_t (x + t * (p.x - x), y + t * (p.y - y)); } + } first_oncurve, first_offcurve, first_offcurve2, last_offcurve, last_offcurve2; + + path_builder_t (hb_font_t *font_, hb_draw_session_t &draw_session_) : + font (font_), draw_session (&draw_session_) {} + + /* based on https://github.com/RazrFalcon/ttf-parser/blob/4f32821/src/glyf.rs#L287 + See also: + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM01/Chap1.html + * https://stackoverflow.com/a/20772557 + * + * Cubic support added. */ + void consume_point (const contour_point_t &point) + { + bool is_on_curve = point.flag & glyf_impl::SimpleGlyph::FLAG_ON_CURVE; +#ifdef HB_NO_CUBIC_GLYF + bool is_cubic = false; +#else + bool is_cubic = !is_on_curve && (point.flag & glyf_impl::SimpleGlyph::FLAG_CUBIC); +#endif + optional_point_t p (font->em_fscalef_x (point.x), font->em_fscalef_y (point.y)); + if (!first_oncurve) + { + if (is_on_curve) + { + first_oncurve = p; + draw_session->move_to (p.x, p.y); + } + else + { + if (is_cubic && !first_offcurve2) + { + first_offcurve2 = first_offcurve; + first_offcurve = p; + } + else if (first_offcurve) + { + optional_point_t mid = first_offcurve.lerp (p, .5f); + first_oncurve = mid; + last_offcurve = p; + draw_session->move_to (mid.x, mid.y); + } + else + first_offcurve = p; + } + } + else + { + if (last_offcurve) + { + if (is_on_curve) + { + if (last_offcurve2) + { + draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y, + last_offcurve.x, last_offcurve.y, + p.x, p.y); + last_offcurve2 = optional_point_t (); + } + else + draw_session->quadratic_to (last_offcurve.x, last_offcurve.y, + p.x, p.y); + last_offcurve = optional_point_t (); + } + else + { + if (is_cubic && !last_offcurve2) + { + last_offcurve2 = last_offcurve; + last_offcurve = p; + } + else + { + optional_point_t mid = last_offcurve.lerp (p, .5f); + + if (is_cubic) + { + draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y, + last_offcurve.x, last_offcurve.y, + mid.x, mid.y); + last_offcurve2 = optional_point_t (); + } + else + draw_session->quadratic_to (last_offcurve.x, last_offcurve.y, + mid.x, mid.y); + last_offcurve = p; + } + } + } + else + { + if (is_on_curve) + draw_session->line_to (p.x, p.y); + else + last_offcurve = p; + } + } + + if (point.is_end_point) + { + if (first_offcurve && last_offcurve) + { + optional_point_t mid = last_offcurve.lerp (first_offcurve2 ? + first_offcurve2 : + first_offcurve, .5f); + if (last_offcurve2) + draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y, + last_offcurve.x, last_offcurve.y, + mid.x, mid.y); + else + draw_session->quadratic_to (last_offcurve.x, last_offcurve.y, + mid.x, mid.y); + last_offcurve = optional_point_t (); + } + /* now check the rest */ + + if (first_offcurve && first_oncurve) + { + if (first_offcurve2) + draw_session->cubic_to (first_offcurve2.x, first_offcurve2.y, + first_offcurve.x, first_offcurve.y, + first_oncurve.x, first_oncurve.y); + else + draw_session->quadratic_to (first_offcurve.x, first_offcurve.y, + first_oncurve.x, first_oncurve.y); + } + else if (last_offcurve && first_oncurve) + { + if (last_offcurve2) + draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y, + last_offcurve.x, last_offcurve.y, + first_oncurve.x, first_oncurve.y); + else + draw_session->quadratic_to (last_offcurve.x, last_offcurve.y, + first_oncurve.x, first_oncurve.y); + } + else if (first_oncurve) + draw_session->line_to (first_oncurve.x, first_oncurve.y); + else if (first_offcurve) + { + float x = first_offcurve.x, y = first_offcurve.y; + draw_session->move_to (x, y); + draw_session->quadratic_to (x, y, x, y); + } + + /* Getting ready for the next contour */ + first_oncurve = first_offcurve = last_offcurve = last_offcurve2 = optional_point_t (); + draw_session->close_path (); + } + } + void points_end () {} + + bool is_consuming_contour_points () { return true; } + contour_point_t *get_phantoms_sink () { return nullptr; } +}; + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_PATH_BUILDER_HH */ diff --git a/gfx/harfbuzz/src/OT/name/name.hh b/gfx/harfbuzz/src/OT/name/name.hh new file mode 100644 index 0000000000..c1839f3b68 --- /dev/null +++ b/gfx/harfbuzz/src/OT/name/name.hh @@ -0,0 +1,589 @@ +/* + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef OT_NAME_NAME_HH +#define OT_NAME_NAME_HH + +#include "../../hb-open-type.hh" +#include "../../hb-ot-name-language.hh" +#include "../../hb-aat-layout.hh" +#include "../../hb-utf.hh" + + +namespace OT { + +template +inline unsigned int +hb_ot_name_convert_utf (hb_bytes_t bytes, + unsigned int *text_size /* IN/OUT */, + typename out_utf_t::codepoint_t *text /* OUT */) +{ + unsigned int src_len = bytes.length / sizeof (typename in_utf_t::codepoint_t); + const typename in_utf_t::codepoint_t *src = (const typename in_utf_t::codepoint_t *) bytes.arrayZ; + const typename in_utf_t::codepoint_t *src_end = src + src_len; + + typename out_utf_t::codepoint_t *dst = text; + + hb_codepoint_t unicode; + const hb_codepoint_t replacement = HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT; + + if (text_size && *text_size) + { + (*text_size)--; /* Save room for NUL-termination. */ + const typename out_utf_t::codepoint_t *dst_end = text + *text_size; + + while (src < src_end && dst < dst_end) + { + const typename in_utf_t::codepoint_t *src_next = in_utf_t::next (src, src_end, &unicode, replacement); + typename out_utf_t::codepoint_t *dst_next = out_utf_t::encode (dst, dst_end, unicode); + if (dst_next == dst) + break; /* Out-of-room. */ + + dst = dst_next; + src = src_next; + } + + *text_size = dst - text; + *dst = 0; /* NUL-terminate. */ + } + + /* Accumulate length of rest. */ + unsigned int dst_len = dst - text; + while (src < src_end) + { + src = in_utf_t::next (src, src_end, &unicode, replacement); + dst_len += out_utf_t::encode_len (unicode); + } + return dst_len; +} + +#define entry_score var.u16[0] +#define entry_index var.u16[1] + + +/* + * name -- Naming + * https://docs.microsoft.com/en-us/typography/opentype/spec/name + */ +#define HB_OT_TAG_name HB_TAG('n','a','m','e') + +#define UNSUPPORTED 42 + +struct NameRecord +{ + hb_language_t language (hb_face_t *face) const + { +#ifndef HB_NO_OT_NAME_LANGUAGE + unsigned int p = platformID; + unsigned int l = languageID; + + if (p == 3) + return _hb_ot_name_language_for_ms_code (l); + + if (p == 1) + return _hb_ot_name_language_for_mac_code (l); + +#ifndef HB_NO_OT_NAME_LANGUAGE_AAT + if (p == 0) + return face->table.ltag->get_language (l); +#endif + +#endif + return HB_LANGUAGE_INVALID; + } + + uint16_t score () const + { + /* Same order as in cmap::find_best_subtable(). */ + unsigned int p = platformID; + unsigned int e = encodingID; + + /* 32-bit. */ + if (p == 3 && e == 10) return 0; + if (p == 0 && e == 6) return 1; + if (p == 0 && e == 4) return 2; + + /* 16-bit. */ + if (p == 3 && e == 1) return 3; + if (p == 0 && e == 3) return 4; + if (p == 0 && e == 2) return 5; + if (p == 0 && e == 1) return 6; + if (p == 0 && e == 0) return 7; + + /* Symbol. */ + if (p == 3 && e == 0) return 8; + + /* We treat all Mac Latin names as ASCII only. */ + if (p == 1 && e == 0) return 10; /* 10 is magic number :| */ + + return UNSUPPORTED; + } + + NameRecord* copy (hb_serialize_context_t *c, const void *base +#ifdef HB_EXPERIMENTAL_API + , const hb_hashmap_t *name_table_overrides +#endif + ) const + { + TRACE_SERIALIZE (this); + HB_UNUSED auto snap = c->snapshot (); + auto *out = c->embed (this); + if (unlikely (!out)) return_trace (nullptr); +#ifdef HB_EXPERIMENTAL_API + hb_ot_name_record_ids_t record_ids (platformID, encodingID, languageID, nameID); + hb_bytes_t* name_bytes; + + if (name_table_overrides->has (record_ids, &name_bytes)) { + hb_bytes_t encoded_bytes = *name_bytes; + char *name_str_utf16_be = nullptr; + + if (platformID != 1) + { + unsigned text_size = hb_ot_name_convert_utf (*name_bytes, nullptr, nullptr); + + text_size++; // needs to consider NULL terminator for use in hb_ot_name_convert_utf() + unsigned byte_len = text_size * hb_utf16_be_t::codepoint_t::static_size; + name_str_utf16_be = (char *) hb_calloc (byte_len, 1); + if (!name_str_utf16_be) + { + c->revert (snap); + return_trace (nullptr); + } + hb_ot_name_convert_utf (*name_bytes, &text_size, + (hb_utf16_be_t::codepoint_t *) name_str_utf16_be); + + unsigned encoded_byte_len = text_size * hb_utf16_be_t::codepoint_t::static_size; + if (!encoded_byte_len || !c->check_assign (out->length, encoded_byte_len, HB_SERIALIZE_ERROR_INT_OVERFLOW)) { + c->revert (snap); + hb_free (name_str_utf16_be); + return_trace (nullptr); + } + + encoded_bytes = hb_bytes_t (name_str_utf16_be, encoded_byte_len); + } + else + { + // mac platform, copy the UTF-8 string(all ascii characters) as is + if (!c->check_assign (out->length, encoded_bytes.length, HB_SERIALIZE_ERROR_INT_OVERFLOW)) { + c->revert (snap); + return_trace (nullptr); + } + } + + out->offset = 0; + c->push (); + encoded_bytes.copy (c); + c->add_link (out->offset, c->pop_pack (), hb_serialize_context_t::Tail, 0); + hb_free (name_str_utf16_be); + } + else +#endif + { + out->offset.serialize_copy (c, offset, base, 0, hb_serialize_context_t::Tail, length); + } + return_trace (out); + } + + bool isUnicode () const + { + unsigned int p = platformID; + unsigned int e = encodingID; + + return (p == 0 || + (p == 3 && (e == 0 || e == 1 || e == 10))); + } + + static int cmp (const void *pa, const void *pb) + { + const NameRecord *a = (const NameRecord *)pa; + const NameRecord *b = (const NameRecord *)pb; + + if (a->platformID != b->platformID) + return a->platformID - b->platformID; + + if (a->encodingID != b->encodingID) + return a->encodingID - b->encodingID; + + if (a->languageID != b->languageID) + return a->languageID - b->languageID; + + if (a->nameID != b->nameID) + return a->nameID - b->nameID; + + if (a->length != b->length) + return a->length - b->length; + + return 0; + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && offset.sanitize (c, base, length)); + } + + HBUINT16 platformID; /* Platform ID. */ + HBUINT16 encodingID; /* Platform-specific encoding ID. */ + HBUINT16 languageID; /* Language ID. */ + HBUINT16 nameID; /* Name ID. */ + HBUINT16 length; /* String length (in bytes). */ + NNOffset16To> + offset; /* String offset from start of storage area (in bytes). */ + public: + DEFINE_SIZE_STATIC (12); +}; + +static int +_hb_ot_name_entry_cmp_key (const void *pa, const void *pb, bool exact) +{ + const hb_ot_name_entry_t *a = (const hb_ot_name_entry_t *) pa; + const hb_ot_name_entry_t *b = (const hb_ot_name_entry_t *) pb; + + /* Compare by name_id, then language. */ + + if (a->name_id != b->name_id) + return a->name_id - b->name_id; + + if (a->language == b->language) return 0; + if (!a->language) return -1; + if (!b->language) return +1; + + const char *astr = hb_language_to_string (a->language); + const char *bstr = hb_language_to_string (b->language); + + signed c = strcmp (astr, bstr); + + // 'a' is the user request, and 'b' is string in the font. + // If eg. user asks for "en-us" and font has "en", approve. + if (!exact && c && + hb_language_matches (b->language, a->language)) + return 0; + + return c; +} + +static int +_hb_ot_name_entry_cmp (const void *pa, const void *pb) +{ + /* Compare by name_id, then language, then score, then index. */ + + int v = _hb_ot_name_entry_cmp_key (pa, pb, true); + if (v) + return v; + + const hb_ot_name_entry_t *a = (const hb_ot_name_entry_t *) pa; + const hb_ot_name_entry_t *b = (const hb_ot_name_entry_t *) pb; + + if (a->entry_score != b->entry_score) + return a->entry_score - b->entry_score; + + if (a->entry_index != b->entry_index) + return a->entry_index - b->entry_index; + + return 0; +} + +struct name +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_name; + + unsigned int get_size () const + { return min_size + count * nameRecordZ.item_size; } + + template + bool serialize (hb_serialize_context_t *c, + Iterator it, + const void *src_string_pool +#ifdef HB_EXPERIMENTAL_API + , const hb_vector_t& insert_name_records + , const hb_hashmap_t *name_table_overrides +#endif + ) + { + TRACE_SERIALIZE (this); + + if (unlikely (!c->extend_min ((*this)))) return_trace (false); + + unsigned total_count = it.len () +#ifdef HB_EXPERIMENTAL_API + + insert_name_records.length +#endif + ; + this->format = 0; + if (!c->check_assign (this->count, total_count, HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return false; + + NameRecord *name_records = (NameRecord *) hb_calloc (total_count, NameRecord::static_size); + if (unlikely (!name_records)) return_trace (false); + + hb_array_t records (name_records, total_count); + + for (const NameRecord& record : it) + { + hb_memcpy (name_records, &record, NameRecord::static_size); + name_records++; + } + +#ifdef HB_EXPERIMENTAL_API + for (unsigned i = 0; i < insert_name_records.length; i++) + { + const hb_ot_name_record_ids_t& ids = insert_name_records[i]; + NameRecord record; + record.platformID = ids.platform_id; + record.encodingID = ids.encoding_id; + record.languageID = ids.language_id; + record.nameID = ids.name_id; + record.length = 0; // handled in NameRecord copy() + record.offset = 0; + memcpy (name_records, &record, NameRecord::static_size); + name_records++; + } +#endif + + records.qsort (); + + c->copy_all (records, + src_string_pool +#ifdef HB_EXPERIMENTAL_API + , name_table_overrides +#endif + ); + hb_free (records.arrayZ); + + + if (unlikely (c->ran_out_of_room ())) return_trace (false); + + this->stringOffset = c->length (); + + return_trace (true); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + name *name_prime = c->serializer->start_embed (); + if (unlikely (!name_prime)) return_trace (false); + +#ifdef HB_EXPERIMENTAL_API + const hb_hashmap_t *name_table_overrides = + &c->plan->name_table_overrides; +#endif + + auto it = + + nameRecordZ.as_array (count) + | hb_filter (c->plan->name_ids, &NameRecord::nameID) + | hb_filter (c->plan->name_languages, &NameRecord::languageID) + | hb_filter ([&] (const NameRecord& namerecord) { + return + (c->plan->flags & HB_SUBSET_FLAGS_NAME_LEGACY) + || namerecord.isUnicode (); + }) +#ifdef HB_EXPERIMENTAL_API + | hb_filter ([&] (const NameRecord& namerecord) { + if (name_table_overrides->is_empty ()) + return true; + hb_ot_name_record_ids_t rec_ids (namerecord.platformID, + namerecord.encodingID, + namerecord.languageID, + namerecord.nameID); + + hb_bytes_t *p; + if (name_table_overrides->has (rec_ids, &p) && + (*p).length == 0) + return false; + return true; + }) +#endif + ; + +#ifdef HB_EXPERIMENTAL_API + hb_hashmap_t retained_name_record_ids; + for (const NameRecord& rec : it) + { + hb_ot_name_record_ids_t rec_ids (rec.platformID, + rec.encodingID, + rec.languageID, + rec.nameID); + retained_name_record_ids.set (rec_ids, 1); + } + + hb_vector_t insert_name_records; + if (!name_table_overrides->is_empty ()) + { + if (unlikely (!insert_name_records.alloc (name_table_overrides->get_population (), true))) + return_trace (false); + for (const auto& record_ids : name_table_overrides->keys ()) + { + if (name_table_overrides->get (record_ids).length == 0) + continue; + if (retained_name_record_ids.has (record_ids)) + continue; + insert_name_records.push (record_ids); + } + } +#endif + + return (name_prime->serialize (c->serializer, it, + std::addressof (this + stringOffset) +#ifdef HB_EXPERIMENTAL_API + , insert_name_records + , name_table_overrides +#endif + )); + } + + bool sanitize_records (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + const void *string_pool = (this+stringOffset).arrayZ; + return_trace (nameRecordZ.sanitize (c, count, string_pool)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (format == 0 || format == 1) && + c->check_array (nameRecordZ.arrayZ, count) && + c->check_range (this, stringOffset) && + sanitize_records (c)); + } + + struct accelerator_t + { + accelerator_t (hb_face_t *face) + { + this->table = hb_sanitize_context_t ().reference_table (face); + assert (this->table.get_length () >= this->table->stringOffset); + this->pool = (const char *) (const void *) (this->table+this->table->stringOffset); + this->pool_len = this->table.get_length () - this->table->stringOffset; + const hb_array_t all_names (this->table->nameRecordZ.arrayZ, + this->table->count); + + this->names.alloc (all_names.length, true); + + for (unsigned int i = 0; i < all_names.length; i++) + { + hb_ot_name_entry_t *entry = this->names.push (); + + entry->name_id = all_names[i].nameID; + entry->language = all_names[i].language (face); + entry->entry_score = all_names[i].score (); + entry->entry_index = i; + } + + this->names.qsort (_hb_ot_name_entry_cmp); + /* Walk and pick best only for each name_id,language pair, + * while dropping unsupported encodings. */ + unsigned int j = 0; + for (unsigned int i = 0; i < this->names.length; i++) + { + if (this->names[i].entry_score == UNSUPPORTED || + this->names[i].language == HB_LANGUAGE_INVALID) + continue; + if (i && + this->names[i - 1].name_id == this->names[i].name_id && + this->names[i - 1].language == this->names[i].language) + continue; + this->names[j++] = this->names[i]; + } + this->names.resize (j); + } + ~accelerator_t () + { + this->table.destroy (); + } + + int get_index (hb_ot_name_id_t name_id, + hb_language_t language, + unsigned int *width=nullptr) const + { + const hb_ot_name_entry_t key = {name_id, {0}, language}; + const hb_ot_name_entry_t *entry = hb_bsearch (key, (const hb_ot_name_entry_t *) this->names, + this->names.length, + sizeof (hb_ot_name_entry_t), + _hb_ot_name_entry_cmp_key, + true); + + if (!entry) + { + entry = hb_bsearch (key, (const hb_ot_name_entry_t *) this->names, + this->names.length, + sizeof (hb_ot_name_entry_t), + _hb_ot_name_entry_cmp_key, + false); + } + + if (!entry) + return -1; + + if (width) + *width = entry->entry_score < 10 ? 2 : 1; + + return entry->entry_index; + } + + hb_bytes_t get_name (unsigned int idx) const + { + const hb_array_t all_names (table->nameRecordZ.arrayZ, table->count); + const NameRecord &record = all_names[idx]; + const hb_bytes_t string_pool (pool, pool_len); + return string_pool.sub_array (record.offset, record.length); + } + + private: + const char *pool; + unsigned int pool_len; + public: + hb_blob_ptr_t table; + hb_vector_t names; + }; + + public: + /* We only implement format 0 for now. */ + HBUINT16 format; /* Format selector (=0/1). */ + HBUINT16 count; /* Number of name records. */ + NNOffset16To> + stringOffset; /* Offset to start of string storage (from start of table). */ + UnsizedArrayOf + nameRecordZ; /* The name records where count is the number of records. */ + public: + DEFINE_SIZE_ARRAY (6, nameRecordZ); +}; + +#undef entry_index +#undef entry_score + +struct name_accelerator_t : name::accelerator_t { + name_accelerator_t (hb_face_t *face) : name::accelerator_t (face) {} +}; + +} /* namespace OT */ + + +#endif /* OT_NAME_NAME_HH */ diff --git a/gfx/harfbuzz/src/check-c-linkage-decls.py b/gfx/harfbuzz/src/check-c-linkage-decls.py new file mode 100755 index 0000000000..fe18eda897 --- /dev/null +++ b/gfx/harfbuzz/src/check-c-linkage-decls.py @@ -0,0 +1,36 @@ +#!/usr/bin/env python3 + +import sys, os + +srcdir = os.getenv ('srcdir', os.path.dirname (__file__)) +base_srcdir = os.getenv ('base_srcdir', srcdir) + +os.chdir (srcdir) + +def removeprefix(s): + abs_path = os.path.join(base_srcdir, s) + return os.path.relpath(abs_path, srcdir) + + +HBHEADERS = [os.path.basename (x) for x in os.getenv ('HBHEADERS', '').split ()] or \ + [x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith ('.h')] +HBSOURCES = [ + removeprefix(x) for x in os.getenv ('HBSOURCES', '').split () +] or [ + x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith (('.cc', '.hh')) +] +stat = 0 + +for x in HBHEADERS: + with open (x, 'r', encoding='utf-8') as f: content = f.read () + if ('HB_BEGIN_DECLS' not in content) or ('HB_END_DECLS' not in content): + print ('Ouch, file %s does not have HB_BEGIN_DECLS / HB_END_DECLS, but it should' % x) + stat = 1 + +for x in HBSOURCES: + with open (x, 'r', encoding='utf-8') as f: content = f.read () + if ('HB_BEGIN_DECLS' in content) or ('HB_END_DECLS' in content): + print ('Ouch, file %s has HB_BEGIN_DECLS / HB_END_DECLS, but it shouldn\'t' % x) + stat = 1 + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/check-externs.py b/gfx/harfbuzz/src/check-externs.py new file mode 100755 index 0000000000..a64d2e5b4a --- /dev/null +++ b/gfx/harfbuzz/src/check-externs.py @@ -0,0 +1,20 @@ +#!/usr/bin/env python3 + +import sys, os, re + +os.chdir (os.getenv ('srcdir', os.path.dirname (__file__))) + +HBHEADERS = [os.path.basename (x) for x in os.getenv ('HBHEADERS', '').split ()] or \ + [x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith ('.h')] + +stat = 0 + +print ('Checking that all public symbols are exported with HB_EXTERN') +for x in HBHEADERS: + with open (x, 'r', encoding='utf-8') as f: content = f.read () + for s in re.findall (r'\n.+\nhb_.+\n', content): + if not s.startswith ('\nHB_EXTERN '): + print ('failure on:', s) + stat = 1 + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/check-header-guards.py b/gfx/harfbuzz/src/check-header-guards.py new file mode 100755 index 0000000000..35ae6bef62 --- /dev/null +++ b/gfx/harfbuzz/src/check-header-guards.py @@ -0,0 +1,34 @@ +#!/usr/bin/env python3 + +import sys, os, re + +srcdir = os.getenv ('srcdir', os.path.dirname (__file__)) +base_srcdir = os.getenv ('base_srcdir', srcdir) + +os.chdir (srcdir) + +def removeprefix(s): + abs_path = os.path.join(base_srcdir, s) + return os.path.relpath(abs_path, srcdir) + + +HBHEADERS = [os.path.basename (x) for x in os.getenv ('HBHEADERS', '').split ()] or \ + [x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith ('.h')] +HBSOURCES = [ + removeprefix(x) for x in os.getenv ('HBSOURCES', '').split () +] or [ + x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith (('.cc', '.hh')) +] + + +stat = 0 + +for x in HBHEADERS + HBSOURCES: + if not x.endswith ('h') or x == 'hb-gobject-structs.h': continue + tag = x.upper ().replace ('.', '_').replace ('-', '_').replace(os.path.sep, '_').replace('/', '_') + with open (x, 'r', encoding='utf-8') as f: content = f.read () + if len (re.findall (tag + r'\b', content)) != 3: + print ('Ouch, header file %s does not have correct preprocessor guards. Expected: %s' % (x, tag)) + stat = 1 + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/check-includes.py b/gfx/harfbuzz/src/check-includes.py new file mode 100755 index 0000000000..fc95874b12 --- /dev/null +++ b/gfx/harfbuzz/src/check-includes.py @@ -0,0 +1,51 @@ +#!/usr/bin/env python3 + +import sys, os, re + +srcdir = os.getenv ('srcdir', os.path.dirname (__file__)) +base_srcdir = os.getenv ('base_srcdir', srcdir) + +os.chdir (srcdir) + +def removeprefix(s): + abs_path = os.path.join(base_srcdir, s) + return os.path.relpath(abs_path, srcdir) + +HBHEADERS = [os.path.basename (x) for x in os.getenv ('HBHEADERS', '').split ()] or \ + [x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith ('.h')] + +HBSOURCES = [ + removeprefix(x) for x in os.getenv ('HBSOURCES', '').split () +] or [ + x for x in os.listdir ('.') if x.startswith ('hb') and x.endswith (('.cc', '.hh')) +] + + +stat = 0 + +print ('Checking that public header files #include "hb-common.h" or "hb.h" first (or none)') +for x in HBHEADERS: + if x == 'hb.h' or x == 'hb-common.h': continue + with open (x, 'r', encoding='utf-8') as f: content = f.read () + first = re.findall (r'#.*include.*', content)[0] + if first not in ['#include "hb.h"', '#include "hb-common.h"']: + print ('failure on %s' % x) + stat = 1 + +print ('Checking that source files #include a private header first (or none)') +for x in HBSOURCES: + with open (x, 'r', encoding='utf-8') as f: content = f.read () + includes = re.findall (r'#.*include.*', content) + if includes: + if not len (re.findall (r'".*\.hh"', includes[0])): + print ('failure on %s' % x) + stat = 1 + +print ('Checking that there is no #include ') +for x in HBHEADERS + HBSOURCES: + with open (x, 'r', encoding='utf-8') as f: content = f.read () + if re.findall ('#.*include.*<.*hb', content): + print ('failure on %s' % x) + stat = 1 + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/check-libstdc++.py b/gfx/harfbuzz/src/check-libstdc++.py new file mode 100755 index 0000000000..e70d5f80b2 --- /dev/null +++ b/gfx/harfbuzz/src/check-libstdc++.py @@ -0,0 +1,39 @@ +#!/usr/bin/env python3 + +import sys, os, shutil, subprocess + +os.chdir (os.getenv ('srcdir', os.path.dirname (__file__))) + +libs = os.getenv ('libs', '.libs') + +ldd = os.getenv ('LDD', shutil.which ('ldd')) +if not ldd: + otool = os.getenv ('OTOOL', shutil.which ('otool')) + if otool: + ldd = otool + ' -L' + else: + print ('check-libstdc++.py: \'ldd\' not found; skipping test') + sys.exit (77) + +stat = 0 +tested = False + +# harfbuzz-icu links to libstdc++ because icu does. +for soname in ['harfbuzz', 'harfbuzz-subset', 'harfbuzz-gobject', 'harfbuzz-cairo']: + for suffix in ['so', 'dylib']: + so = os.path.join (libs, 'lib%s.%s' % (soname, suffix)) + if not os.path.exists (so): continue + + print ('Checking that we are not linking to libstdc++ or libc++ in %s' % so) + ldd_result = subprocess.check_output (ldd.split() + [so]) + if (b'libstdc++' in ldd_result) or (b'libc++' in ldd_result): + print ('Ouch, %s is linked to libstdc++ or libc++' % so) + stat = 1 + + tested = True + +if not tested: + print ('check-libstdc++.py: libharfbuzz shared library not found; skipping test') + sys.exit (77) + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/check-static-inits.py b/gfx/harfbuzz/src/check-static-inits.py new file mode 100755 index 0000000000..c6e2db1ea6 --- /dev/null +++ b/gfx/harfbuzz/src/check-static-inits.py @@ -0,0 +1,51 @@ +#!/usr/bin/env python3 + +import sys, os, shutil, subprocess, glob, re + +builddir = os.getenv ('builddir', os.path.dirname (__file__)) +libs = os.getenv ('libs', '.libs') + +objdump = os.getenv ('OBJDUMP', shutil.which ('objdump')) +if not objdump: + print ('check-static-inits.py: \'ldd\' not found; skipping test') + sys.exit (77) + +if sys.version_info < (3, 5): + print ('check-static-inits.py: needs python 3.5 for recursive support in glob') + sys.exit (77) + +OBJS = glob.glob (os.path.join (builddir, libs, '**', '*hb*.o'), recursive=True) +if not OBJS: + print ('check-static-inits.py: object files not found; skipping test') + sys.exit (77) + +stat = 0 +tested = 0 + +for obj in OBJS: + result = subprocess.run(objdump.split () + ['-t', obj], stdout=subprocess.PIPE, stderr=subprocess.PIPE) + + if result.returncode: + if result.stderr.find (b'not recognized') != -1: + # https://github.com/harfbuzz/harfbuzz/issues/3019 + print ('objdump %s returned "not recognized", skipping' % obj) + continue + print ('objdump %s returned error:\n%s' % (obj, result.stderr.decode ('utf-8'))) + stat = 2 + + result = result.stdout.decode ('utf-8') + + # Checking that no object file has static initializers + for l in re.findall (r'^.*\.[cd]tors.*$', result, re.MULTILINE): + if not re.match (r'.*\b0+\b', l): + print ('Ouch, %s has static initializers/finalizers' % obj) + stat = 1 + + # Checking that no object file has lazy static C++ constructors/destructors or other such stuff + if ('__cxa_' in result) and ('__ubsan_handle' not in result): + print ('Ouch, %s has lazy static C++ constructors/destructors or other such stuff' % obj) + stat = 1 + + tested += 1 + +sys.exit (stat if tested else 77) diff --git a/gfx/harfbuzz/src/check-symbols.py b/gfx/harfbuzz/src/check-symbols.py new file mode 100755 index 0000000000..91bf8b0671 --- /dev/null +++ b/gfx/harfbuzz/src/check-symbols.py @@ -0,0 +1,74 @@ +#!/usr/bin/env python3 + +import sys, os, shutil, subprocess, re, difflib + +os.environ['LC_ALL'] = 'C' # otherwise 'nm' prints in wrong order + +builddir = os.getenv ('builddir', os.path.dirname (__file__)) +libs = os.getenv ('libs', '.libs') + +IGNORED_SYMBOLS = '|'.join(['_fini', '_init', '_fdata', '_ftext', '_fbss', + '__bss_start', '__bss_start__', '__bss_end__', '_edata', '_end', '_bss_end__', + '__end__', '__gcov_.*', 'llvm_.*', 'flush_fn_list', 'writeout_fn_list', 'mangle_path', + 'lprofDirMode', 'reset_fn_list']) + +nm = os.getenv ('NM', shutil.which ('nm')) +if not nm: + print ('check-symbols.py: \'nm\' not found; skipping test') + sys.exit (77) + +cxxfilt = shutil.which ('c++filt') + +tested = False +stat = 0 + +for soname in ['harfbuzz', 'harfbuzz-subset', 'harfbuzz-icu', 'harfbuzz-gobject', 'harfbuzz-cairo']: + for suffix in ['so', 'dylib']: + so = os.path.join (builddir, libs, 'lib%s.%s' % (soname, suffix)) + if not os.path.exists (so): continue + + # On macOS, C symbols are prefixed with _ + symprefix = '_' if suffix == 'dylib' else '' + + EXPORTED_SYMBOLS = [s.split ()[2] + for s in re.findall (r'^.+ [BCDGIRSTu] .+$', subprocess.check_output (nm.split() + [so]).decode ('utf-8'), re.MULTILINE) + if not re.match (r'.* %s(%s)\b' % (symprefix, IGNORED_SYMBOLS), s)] + + # run again c++filt also if is available + if cxxfilt: + EXPORTED_SYMBOLS = subprocess.check_output ( + [cxxfilt], input='\n'.join (EXPORTED_SYMBOLS).encode () + ).decode ('utf-8').splitlines () + + prefix = (symprefix + os.path.basename (so)).replace ('libharfbuzz', 'hb').replace ('-', '_').split ('.')[0] + + print ('Checking that %s does not expose internal symbols' % so) + suspicious_symbols = [x for x in EXPORTED_SYMBOLS if not re.match (r'^%s(_|$)' % prefix, x)] + if suspicious_symbols: + print ('Ouch, internal symbols exposed:', suspicious_symbols) + stat = 1 + + def_path = os.path.join (builddir, soname + '.def') + if not os.path.exists (def_path): + print ('\'%s\' not found; skipping' % def_path) + else: + print ('Checking that %s has the same symbol list as %s' % (so, def_path)) + with open (def_path, 'r', encoding='utf-8') as f: def_file = f.read () + diff_result = list (difflib.context_diff ( + def_file.splitlines (), + ['EXPORTS'] + [re.sub ('^%shb' % symprefix, 'hb', x) for x in EXPORTED_SYMBOLS] + + # cheat: copy the last line from the def file! + [def_file.splitlines ()[-1]] + )) + + if diff_result: + print ('\n'.join (diff_result)) + stat = 1 + + tested = True + +if not tested: + print ('check-symbols.py: no shared libraries found; skipping test') + sys.exit (77) + +sys.exit (stat) diff --git a/gfx/harfbuzz/src/failing-alloc.c b/gfx/harfbuzz/src/failing-alloc.c new file mode 100644 index 0000000000..1bfb935b94 --- /dev/null +++ b/gfx/harfbuzz/src/failing-alloc.c @@ -0,0 +1,65 @@ +/* + * Copyright © 2020 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +int alloc_state = 0; + +__attribute__((no_sanitize("integer"))) +static int fastrand () +{ + if (!alloc_state) return 1; + /* Based on https://software.intel.com/content/www/us/en/develop/articles/fast-random-number-generator-on-the-intel-pentiumr-4-processor.html */ + alloc_state = (214013 * alloc_state + 2531011); + return (alloc_state >> 16) & 0x7FFF; +} + +void* hb_malloc_impl (size_t size) +{ + return (fastrand () % 16) ? malloc (size) : NULL; +} + +void* hb_calloc_impl (size_t nmemb, size_t size) +{ + return (fastrand () % 16) ? calloc (nmemb, size) : NULL; +} + +void* hb_realloc_impl (void *ptr, size_t size) +{ + return (fastrand () % 16) ? realloc (ptr, size) : NULL; +} + +void hb_free_impl (void *ptr) +{ + return free (ptr); +} + +#ifdef __cplusplus +} +#endif diff --git a/gfx/harfbuzz/src/fix_get_types.py b/gfx/harfbuzz/src/fix_get_types.py new file mode 100755 index 0000000000..208b9dfcd6 --- /dev/null +++ b/gfx/harfbuzz/src/fix_get_types.py @@ -0,0 +1,15 @@ +#!/usr/bin/env python3 + +import re +import argparse + +parser = argparse.ArgumentParser () +parser.add_argument ('input') +parser.add_argument ('output') +args = parser.parse_args () + +with open (args.input, 'r') as inp, open (args.output, 'w') as out: + for l in inp.readlines (): + l = re.sub ('_t_get_type', '_get_type', l) + l = re.sub ('_T \(', ' (', l) + out.write (l) diff --git a/gfx/harfbuzz/src/gen-arabic-joining-list.py b/gfx/harfbuzz/src/gen-arabic-joining-list.py new file mode 100755 index 0000000000..7ec7425fd8 --- /dev/null +++ b/gfx/harfbuzz/src/gen-arabic-joining-list.py @@ -0,0 +1,106 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-arabic-joining-table.py ArabicShaping.txt Scripts.txt + +Input files: +* https://unicode.org/Public/UCD/latest/ucd/ArabicShaping.txt +* https://unicode.org/Public/UCD/latest/ucd/Scripts.txt +""" + +import os.path, sys + +if len (sys.argv) != 3: + sys.exit (__doc__) + +files = [open (x, encoding='utf-8') for x in sys.argv[1:]] + +headers = [[f.readline (), f.readline ()] for f in files] +while files[0].readline ().find ('##################') < 0: + pass + +def read (f): + mapping = {} + for line in f: + + j = line.find ('#') + if j >= 0: + line = line[:j] + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + + uu = fields[0].split ('..') + start = int (uu[0], 16) + if len (uu) == 1: + end = start + else: + end = int (uu[1], 16) + + t = fields[1] + + for u in range (start, end + 1): + mapping[u] = t + + return mapping + +def read_joining_uu (f): + values = set () + for line in f: + + if line[0] == '#': + continue + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + if fields[2] in {'T', 'U'}: + continue + + values.add (int (fields[0], 16)) + + return sorted (values) + +def print_has_arabic_joining (scripts, joining_uu): + + print ("static bool") + print ("has_arabic_joining (hb_script_t script)") + print ("{") + print (" /* List of scripts that have data in arabic-table. */") + print (" switch ((int) script)") + print (" {") + + for script in sorted ({scripts[u] for u in joining_uu if scripts[u] not in {'Common', 'Inherited'}}): + print (" case HB_SCRIPT_{}:".format (script.upper ())) + + print (" return true;") + print () + print (" default:") + print (" return false;") + print (" }") + print ("}") + print () + +print ("/* == Start of generated function == */") +print ("/*") +print (" * The following function is generated by running:") +print (" *") +print (" * ./gen-arabic-joining-list.py ArabicShaping.txt Scripts.txt") +print (" *") +print (" * on files with these headers:") +print (" *") +for h in headers: + for l in h: + print (" * %s" % (l.strip ())) +print (" */") +print () +print ("#ifndef HB_OT_SHAPER_ARABIC_JOINING_LIST_HH") +print ("#define HB_OT_SHAPER_ARABIC_JOINING_LIST_HH") +print () + +print_has_arabic_joining (read (files[1]), read_joining_uu (files[0])) + +print () +print ("#endif /* HB_OT_SHAPER_ARABIC_JOINING_LIST_HH */") +print () +print ("/* == End of generated function == */") diff --git a/gfx/harfbuzz/src/gen-arabic-pua.py b/gfx/harfbuzz/src/gen-arabic-pua.py new file mode 100755 index 0000000000..4cf290087d --- /dev/null +++ b/gfx/harfbuzz/src/gen-arabic-pua.py @@ -0,0 +1,35 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-arabic-pua.py +""" + +import packTab + + +print ("/* == Start of generated table == */") +print ("/*") +print (" * The following table is generated by running:") +print (" *") +print (" * ./gen-arabic-pua.py") +print (" *") +print (" */") +print () +print ("#ifndef HB_OT_SHAPER_ARABIC_PUA_HH") +print ("#define HB_OT_SHAPER_ARABIC_PUA_HH") +print () + +code = packTab.Code('_hb_arabic') + +for p in ("ArabicPUASimplified.txt", "ArabicPUATraditional.txt"): + with open (p, encoding='utf-8') as f: + fields = [l.split('\t') for l in f if l[:1] != '#'] + data = {int(fs[1], 16):int(fs[0], 16) for fs in fields} + sol = packTab.pack_table(data, compression=9) + sol.genCode(code, f'pua_{p[9:13].lower()}_map') + +code.print_c(linkage='static inline') + +print () +print ("#endif /* HB_OT_SHAPER_ARABIC_PUA_HH */") +print () +print ("/* == End of generated table == */") diff --git a/gfx/harfbuzz/src/gen-arabic-table.py b/gfx/harfbuzz/src/gen-arabic-table.py new file mode 100755 index 0000000000..8278d7d69c --- /dev/null +++ b/gfx/harfbuzz/src/gen-arabic-table.py @@ -0,0 +1,358 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-arabic-table.py ArabicShaping.txt UnicodeData.txt Blocks.txt + +Input files: +* https://unicode.org/Public/UCD/latest/ucd/ArabicShaping.txt +* https://unicode.org/Public/UCD/latest/ucd/UnicodeData.txt +* https://unicode.org/Public/UCD/latest/ucd/Blocks.txt +""" + +import os.path, sys + +if len (sys.argv) != 4: + sys.exit (__doc__) + +files = [open (x, encoding='utf-8') for x in sys.argv[1:]] + +headers = [[files[0].readline (), files[0].readline ()], [files[2].readline (), files[2].readline ()]] +headers.append (["UnicodeData.txt does not have a header."]) +while files[0].readline ().find ('##################') < 0: + pass + +blocks = {} +def read_blocks(f): + global blocks + for line in f: + + j = line.find ('#') + if j >= 0: + line = line[:j] + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + + uu = fields[0].split ('..') + start = int (uu[0], 16) + if len (uu) == 1: + end = start + else: + end = int (uu[1], 16) + + t = fields[1] + + for u in range (start, end + 1): + blocks[u] = t + +def print_joining_table(f): + + values = {} + for line in f: + + if line[0] == '#': + continue + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + + u = int (fields[0], 16) + + if fields[3] in ["ALAPH", "DALATH RISH"]: + value = "JOINING_GROUP_" + fields[3].replace(' ', '_') + else: + value = "JOINING_TYPE_" + fields[2] + values[u] = value + + short_value = {} + for value in sorted (set ([v for v in values.values ()] + ['JOINING_TYPE_X'])): + short = ''.join(x[0] for x in value.split('_')[2:]) + assert short not in short_value.values() + short_value[value] = short + + print () + for value,short in short_value.items(): + print ("#define %s %s" % (short, value)) + + uu = sorted(values.keys()) + num = len(values) + all_blocks = set([blocks[u] for u in uu]) + + last = -100000 + ranges = [] + for u in uu: + if u - last <= 1+16*5: + ranges[-1][-1] = u + else: + ranges.append([u,u]) + last = u + + print () + print ("static const uint8_t joining_table[] =") + print ("{") + last_block = None + offset = 0 + for start,end in ranges: + + print () + print ("#define joining_offset_0x%04xu %d" % (start, offset)) + + for u in range(start, end+1): + + block = blocks.get(u, last_block) + value = values.get(u, "JOINING_TYPE_X") + + if block != last_block or u == start: + if u != start: + print () + if block in all_blocks: + print ("\n /* %s */" % block) + else: + print ("\n /* FILLER */") + last_block = block + if u % 32 != 0: + print () + print (" /* %04X */" % (u//32*32), " " * (u % 32), end="") + + if u % 32 == 0: + print () + print (" /* %04X */ " % u, end="") + print ("%s," % short_value[value], end="") + print () + + offset += end - start + 1 + print () + occupancy = num * 100. / offset + print ("}; /* Table items: %d; occupancy: %d%% */" % (offset, occupancy)) + print () + + page_bits = 12 + print () + print ("static unsigned int") + print ("joining_type (hb_codepoint_t u)") + print ("{") + print (" switch (u >> %d)" % page_bits) + print (" {") + pages = set([u>>page_bits for u in [s for s,e in ranges]+[e for s,e in ranges]]) + for p in sorted(pages): + print (" case 0x%0Xu:" % p) + for (start,end) in ranges: + if p not in [start>>page_bits, end>>page_bits]: continue + offset = "joining_offset_0x%04xu" % start + print (" if (hb_in_range (u, 0x%04Xu, 0x%04Xu)) return joining_table[u - 0x%04Xu + %s];" % (start, end, start, offset)) + print (" break;") + print ("") + print (" default:") + print (" break;") + print (" }") + print (" return X;") + print ("}") + print () + for value,short in short_value.items(): + print ("#undef %s" % (short)) + print () + +LIGATURES = ( + 0xF2EE, 0xFC08, 0xFC0E, 0xFC12, 0xFC32, 0xFC3F, 0xFC40, 0xFC41, 0xFC42, + 0xFC44, 0xFC4E, 0xFC5E, 0xFC60, 0xFC61, 0xFC62, 0xFC6A, 0xFC6D, 0xFC6F, + 0xFC70, 0xFC73, 0xFC75, 0xFC86, 0xFC8F, 0xFC91, 0xFC94, 0xFC9C, 0xFC9D, + 0xFC9E, 0xFC9F, 0xFCA1, 0xFCA2, 0xFCA3, 0xFCA4, 0xFCA8, 0xFCAA, 0xFCAC, + 0xFCB0, 0xFCC9, 0xFCCA, 0xFCCB, 0xFCCC, 0xFCCD, 0xFCCE, 0xFCCF, 0xFCD0, + 0xFCD1, 0xFCD2, 0xFCD3, 0xFCD5, 0xFCDA, 0xFCDB, 0xFCDC, 0xFCDD, 0xFD30, + 0xFD88, 0xFEF5, 0xFEF6, 0xFEF7, 0xFEF8, 0xFEF9, 0xFEFA, 0xFEFB, 0xFEFC, + 0xF201, 0xF211, 0xF2EE, +) + +def print_shaping_table(f): + + shapes = {} + ligatures = {} + names = {} + lines = f.readlines() + lines += [ + "F201;PUA ARABIC LIGATURE LELLAH ISOLATED FORM;Lo;0;AL; 0644 0644 0647;;;;N;;;;;", + "F211;PUA ARABIC LIGATURE LAM WITH MEEM WITH JEEM INITIAL FORM;Lo;0;AL; 0644 0645 062C;;;;N;;;;;", + "F2EE;PUA ARABIC LIGATURE SHADDA WITH FATHATAN ISOLATED FORM;Lo;0;AL; 0020 064B 0651;;;;N;;;;;", + ] + for line in lines: + + fields = [x.strip () for x in line.split (';')] + if fields[5][0:1] != '<': + continue + + items = fields[5].split (' ') + shape, items = items[0][1:-1], tuple (int (x, 16) for x in items[1:]) + c = int (fields[0], 16) + + if not shape in ['initial', 'medial', 'isolated', 'final']: + continue + + if len (items) != 1: + # Mark ligatures start with space and are in visual order, so we + # remove the space and reverse the items. + if items[0] == 0x0020: + items = items[:0:-1] + shape = None + # We only care about a subset of ligatures + if c not in LIGATURES: + continue + + # Save ligature + names[c] = fields[1] + if items not in ligatures: + ligatures[items] = {} + ligatures[items][shape] = c + else: + # Save shape + if items[0] not in names: + names[items[0]] = fields[1] + else: + names[items[0]] = os.path.commonprefix ([names[items[0]], fields[1]]).strip () + if items[0] not in shapes: + shapes[items[0]] = {} + shapes[items[0]][shape] = c + + print () + print ("static const uint16_t shaping_table[][4] =") + print ("{") + + keys = shapes.keys () + min_u, max_u = min (keys), max (keys) + for u in range (min_u, max_u + 1): + s = [shapes[u][shape] if u in shapes and shape in shapes[u] else 0 + for shape in ['initial', 'medial', 'final', 'isolated']] + value = ', '.join ("0x%04Xu" % c for c in s) + print (" {%s}, /* U+%04X %s */" % (value, u, names[u] if u in names else "")) + + print ("};") + print () + print ("#define SHAPING_TABLE_FIRST 0x%04Xu" % min_u) + print ("#define SHAPING_TABLE_LAST 0x%04Xu" % max_u) + print () + + ligas_2 = {} + ligas_3 = {} + ligas_mark_2 = {} + for key in ligatures.keys (): + for shape in ligatures[key]: + c = ligatures[key][shape] + if len(key) == 3: + if shape == 'isolated': + liga = (shapes[key[0]]['initial'], shapes[key[1]]['medial'], shapes[key[2]]['final']) + elif shape == 'final': + liga = (shapes[key[0]]['medial'], shapes[key[1]]['medial'], shapes[key[2]]['final']) + elif shape == 'initial': + liga = (shapes[key[0]]['initial'], shapes[key[1]]['medial'], shapes[key[2]]['medial']) + else: + raise Exception ("Unexpected shape", shape) + if liga[0] not in ligas_3: + ligas_3[liga[0]] = [] + ligas_3[liga[0]].append ((liga[1], liga[2], c)) + elif len(key) == 2: + if shape is None: + liga = key + if liga[0] not in ligas_mark_2: + ligas_mark_2[liga[0]] = [] + ligas_mark_2[liga[0]].append ((liga[1], c)) + continue + elif shape == 'isolated': + liga = (shapes[key[0]]['initial'], shapes[key[1]]['final']) + elif shape == 'final': + liga = (shapes[key[0]]['medial'], shapes[key[1]]['final']) + elif shape == 'initial': + liga = (shapes[key[0]]['initial'], shapes[key[1]]['medial']) + else: + raise Exception ("Unexpected shape", shape) + if liga[0] not in ligas_2: + ligas_2[liga[0]] = [] + ligas_2[liga[0]].append ((liga[1], c)) + else: + raise Exception ("Unexpected number of ligature components", key) + max_i = max (len (ligas_2[l]) for l in ligas_2) + print () + print ("static const struct ligature_set_t {") + print (" uint16_t first;") + print (" struct ligature_pairs_t {") + print (" uint16_t components[1];") + print (" uint16_t ligature;") + print (" } ligatures[%d];" % max_i) + print ("} ligature_table[] =") + print ("{") + for first in sorted (ligas_2.keys ()): + + print (" { 0x%04Xu, {" % (first)) + for liga in ligas_2[first]: + print (" { {0x%04Xu}, 0x%04Xu }, /* %s */" % (liga[0], liga[1], names[liga[1]])) + print (" }},") + + print ("};") + print () + + max_i = max (len (ligas_mark_2[l]) for l in ligas_mark_2) + print () + print ("static const struct ligature_mark_set_t {") + print (" uint16_t first;") + print (" struct ligature_pairs_t {") + print (" uint16_t components[1];") + print (" uint16_t ligature;") + print (" } ligatures[%d];" % max_i) + print ("} ligature_mark_table[] =") + print ("{") + for first in sorted (ligas_mark_2.keys ()): + + print (" { 0x%04Xu, {" % (first)) + for liga in ligas_mark_2[first]: + print (" { {0x%04Xu}, 0x%04Xu }, /* %s */" % (liga[0], liga[1], names[liga[1]])) + print (" }},") + + print ("};") + print () + + max_i = max (len (ligas_3[l]) for l in ligas_3) + print () + print ("static const struct ligature_3_set_t {") + print (" uint16_t first;") + print (" struct ligature_triplets_t {") + print (" uint16_t components[2];") + print (" uint16_t ligature;") + print (" } ligatures[%d];" % max_i) + print ("} ligature_3_table[] =") + print ("{") + for first in sorted (ligas_3.keys ()): + + print (" { 0x%04Xu, {" % (first)) + for liga in ligas_3[first]: + print (" { {0x%04Xu, 0x%04Xu}, 0x%04Xu}, /* %s */" % (liga[0], liga[1], liga[2], names[liga[2]])) + print (" }},") + + print ("};") + print () + + + +print ("/* == Start of generated table == */") +print ("/*") +print (" * The following table is generated by running:") +print (" *") +print (" * ./gen-arabic-table.py ArabicShaping.txt UnicodeData.txt Blocks.txt") +print (" *") +print (" * on files with these headers:") +print (" *") +for h in headers: + for l in h: + print (" * %s" % (l.strip())) +print (" */") +print () +print ("#ifndef HB_OT_SHAPER_ARABIC_TABLE_HH") +print ("#define HB_OT_SHAPER_ARABIC_TABLE_HH") +print () + +read_blocks (files[2]) +print_joining_table (files[0]) +print_shaping_table (files[1]) + +print () +print ("#endif /* HB_OT_SHAPER_ARABIC_TABLE_HH */") +print () +print ("/* == End of generated table == */") diff --git a/gfx/harfbuzz/src/gen-def.py b/gfx/harfbuzz/src/gen-def.py new file mode 100755 index 0000000000..6011817bc5 --- /dev/null +++ b/gfx/harfbuzz/src/gen-def.py @@ -0,0 +1,33 @@ +#!/usr/bin/env python3 + +"usage: gen-def.py harfbuzz.def hb.h [hb-blob.h hb-buffer.h ...]" + +import os, re, sys + +if len (sys.argv) < 3: + sys.exit(__doc__) + +output_file = sys.argv[1] +header_paths = sys.argv[2:] + +headers_content = [] +for h in header_paths: + if h.endswith (".h"): + with open (h, encoding='utf-8') as f: headers_content.append (f.read ()) + +symbols = sorted (re.findall (r"^hb_\w+(?= \()", "\n".join (headers_content), re.M)) +if '--experimental-api' not in sys.argv: + # Move these to harfbuzz-sections.txt when got stable + experimental_symbols = \ +"""hb_shape_justify +hb_subset_repack_or_fail +hb_subset_input_override_name_table +""".splitlines () + symbols = [x for x in symbols if x not in experimental_symbols] +symbols = "\n".join (symbols) + +result = symbols if os.getenv ('PLAIN_LIST', '') else """EXPORTS +%s +LIBRARY lib%s-0.dll""" % (symbols, output_file.replace ('src/', '').replace ('.def', '')) + +with open (output_file, "w") as f: f.write (result) diff --git a/gfx/harfbuzz/src/gen-emoji-table.py b/gfx/harfbuzz/src/gen-emoji-table.py new file mode 100755 index 0000000000..42a3fb8de5 --- /dev/null +++ b/gfx/harfbuzz/src/gen-emoji-table.py @@ -0,0 +1,98 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-emoji-table.py emoji-data.txt emoji-test.txt + +Input file: +* https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt +* https://www.unicode.org/Public/emoji/latest/emoji-test.txt +""" + +import sys +from collections import OrderedDict +import packTab + +if len (sys.argv) != 3: + sys.exit (__doc__) + +f = open(sys.argv[1]) +header = [f.readline () for _ in range(10)] + +ranges = OrderedDict() +for line in f.readlines(): + line = line.strip() + if not line or line[0] == '#': + continue + rang, typ = [s.strip() for s in line.split('#')[0].split(';')[:2]] + + rang = [int(s, 16) for s in rang.split('..')] + if len(rang) > 1: + start, end = rang + else: + start = end = rang[0] + + if typ not in ranges: + ranges[typ] = [] + if ranges[typ] and ranges[typ][-1][1] == start - 1: + ranges[typ][-1] = (ranges[typ][-1][0], end) + else: + ranges[typ].append((start, end)) + + + +print ("/* == Start of generated table == */") +print ("/*") +print (" * The following tables are generated by running:") +print (" *") +print (" * ./gen-emoji-table.py emoji-data.txt") +print (" *") +print (" * on file with this header:") +print (" *") +for l in header: + print (" * %s" % (l.strip())) +print (" */") +print () +print ("#ifndef HB_UNICODE_EMOJI_TABLE_HH") +print ("#define HB_UNICODE_EMOJI_TABLE_HH") +print () +print ('#include "hb-unicode.hh"') +print () + +for typ, s in ranges.items(): + if typ != "Extended_Pictographic": continue + + arr = dict() + for start,end in s: + for i in range(start, end + 1): + arr[i] = 1 + + sol = packTab.pack_table(arr, 0, compression=9) + code = packTab.Code('_hb_emoji') + sol.genCode(code, 'is_'+typ) + code.print_c(linkage='static inline') + print() + +print () +print ("#endif /* HB_UNICODE_EMOJI_TABLE_HH */") +print () +print ("/* == End of generated table == */") + + +# Generate test file. +sequences = [] +with open(sys.argv[2]) as f: + for line in f.readlines(): + if "#" in line: + line = line[:line.index("#")] + if ";" in line: + line = line[:line.index(";")] + line = line.strip() + line = line.split(" ") + if len(line) < 2: + continue + sequences.append(line) + +with open("../test/shape/data/in-house/tests/emoji-clusters.tests", "w") as f: + for sequence in sequences: + f.write("../fonts/AdobeBlank2.ttf;--no-glyph-names --no-positions --font-funcs=ot") + f.write(";" + ",".join(sequence)) + f.write(";[" + "|".join("1=0" for c in sequence) + "]\n") diff --git a/gfx/harfbuzz/src/gen-harfbuzzcc.py b/gfx/harfbuzz/src/gen-harfbuzzcc.py new file mode 100755 index 0000000000..227384043e --- /dev/null +++ b/gfx/harfbuzz/src/gen-harfbuzzcc.py @@ -0,0 +1,24 @@ +#!/usr/bin/env python3 + +"This tool is intended to be used from meson" + +import os, sys, shutil + +if len (sys.argv) < 3: + sys.exit (__doc__) + +OUTPUT = sys.argv[1] +CURRENT_SOURCE_DIR = sys.argv[2] + +# make sure input files are unique +sources = sorted(set(sys.argv[3:])) + +with open (OUTPUT, "wb") as f: + f.write ("".join ('#include "{}"\n'.format (os.path.relpath (os.path.abspath (x), CURRENT_SOURCE_DIR)) for x in sources if x.endswith (".cc")).encode ()) + +# copy it also to the source tree, but only if it has changed +baseline_filename = os.path.join (CURRENT_SOURCE_DIR, os.path.basename (OUTPUT)) +with open(baseline_filename, "rb") as baseline: + with open(OUTPUT, "rb") as generated: + if baseline.read() != generated.read(): + shutil.copyfile (OUTPUT, baseline_filename) diff --git a/gfx/harfbuzz/src/gen-hb-version.py b/gfx/harfbuzz/src/gen-hb-version.py new file mode 100755 index 0000000000..06018edfcf --- /dev/null +++ b/gfx/harfbuzz/src/gen-hb-version.py @@ -0,0 +1,40 @@ +#!/usr/bin/env python3 + +"This tool is intended to be used from meson" + +import os, sys, shutil, re + +if len (sys.argv) < 4: + sys.exit(__doc__) + +version = sys.argv[1] +major, minor, micro = version.split (".") + +OUTPUT = sys.argv[2] +INPUT = sys.argv[3] +CURRENT_SOURCE_DIR = os.path.dirname(INPUT) + +try: + with open (OUTPUT, "r", encoding='utf-8') as old_output: + for line in old_output: + old_version = re.match (r"#define HB_VERSION_STRING \"(\d.\d.\d)\"", line) + if old_version and old_version[1] == version: + sys.exit () +except IOError: + pass + +with open (INPUT, "r", encoding='utf-8') as template: + with open (OUTPUT, "wb") as output: + output.write (template.read () + .replace ("@HB_VERSION_MAJOR@", major) + .replace ("@HB_VERSION_MINOR@", minor) + .replace ("@HB_VERSION_MICRO@", micro) + .replace ("@HB_VERSION@", version) + .encode ()) + +# copy it also to the source tree, but only if it has changed +baseline_filename = os.path.join (CURRENT_SOURCE_DIR, os.path.basename (OUTPUT)) +with open(baseline_filename, "rb") as baseline: + with open(OUTPUT, "rb") as generated: + if baseline.read() != generated.read(): + shutil.copyfile (OUTPUT, baseline_filename) diff --git a/gfx/harfbuzz/src/gen-indic-table.py b/gfx/harfbuzz/src/gen-indic-table.py new file mode 100755 index 0000000000..4ef970265d --- /dev/null +++ b/gfx/harfbuzz/src/gen-indic-table.py @@ -0,0 +1,699 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-indic-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt Blocks.txt + +Input files: +* https://unicode.org/Public/UCD/latest/ucd/IndicSyllabicCategory.txt +* https://unicode.org/Public/UCD/latest/ucd/IndicPositionalCategory.txt +* https://unicode.org/Public/UCD/latest/ucd/Blocks.txt +""" + +import sys + +if len (sys.argv) != 4: + sys.exit (__doc__) + +ALLOWED_SINGLES = [0x00A0, 0x25CC] +ALLOWED_BLOCKS = [ + 'Basic Latin', + 'Latin-1 Supplement', + 'Devanagari', + 'Bengali', + 'Gurmukhi', + 'Gujarati', + 'Oriya', + 'Tamil', + 'Telugu', + 'Kannada', + 'Malayalam', + 'Myanmar', + 'Khmer', + 'Vedic Extensions', + 'General Punctuation', + 'Superscripts and Subscripts', + 'Devanagari Extended', + 'Myanmar Extended-B', + 'Myanmar Extended-A', +] + +files = [open (x, encoding='utf-8') for x in sys.argv[1:]] + +headers = [[f.readline () for i in range (2)] for f in files] + +unicode_data = [{} for _ in files] +for i, f in enumerate (files): + for line in f: + + j = line.find ('#') + if j >= 0: + line = line[:j] + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + + uu = fields[0].split ('..') + start = int (uu[0], 16) + if len (uu) == 1: + end = start + else: + end = int (uu[1], 16) + + t = fields[1] + + for u in range (start, end + 1): + unicode_data[i][u] = t + +# Merge data into one dict: +defaults = ('Other', 'Not_Applicable', 'No_Block') +combined = {} +for i,d in enumerate (unicode_data): + for u,v in d.items (): + if i == 2 and not u in combined: + continue + if not u in combined: + combined[u] = list (defaults) + combined[u][i] = v +combined = {k:v for k,v in combined.items() if k in ALLOWED_SINGLES or v[2] in ALLOWED_BLOCKS} + + +# Convert categories & positions types + +categories = { + 'indic' : [ + 'X', + 'C', + 'V', + 'N', + 'H', + 'ZWNJ', + 'ZWJ', + 'M', + 'SM', + 'A', + 'VD', + 'PLACEHOLDER', + 'DOTTEDCIRCLE', + 'RS', + 'MPst', + 'Repha', + 'Ra', + 'CM', + 'Symbol', + 'CS', + ], + 'khmer' : [ + 'VAbv', + 'VBlw', + 'VPre', + 'VPst', + + 'Robatic', + 'Xgroup', + 'Ygroup', + ], + 'myanmar' : [ + 'VAbv', + 'VBlw', + 'VPre', + 'VPst', + + 'IV', + 'As', + 'DB', + 'GB', + 'MH', + 'MR', + 'MW', + 'MY', + 'PT', + 'VS', + 'ML', + ], +} + +category_map = { + 'Other' : 'X', + 'Avagraha' : 'Symbol', + 'Bindu' : 'SM', + 'Brahmi_Joining_Number' : 'PLACEHOLDER', # Don't care. + 'Cantillation_Mark' : 'A', + 'Consonant' : 'C', + 'Consonant_Dead' : 'C', + 'Consonant_Final' : 'CM', + 'Consonant_Head_Letter' : 'C', + 'Consonant_Initial_Postfixed' : 'C', # TODO + 'Consonant_Killer' : 'M', # U+17CD only. + 'Consonant_Medial' : 'CM', + 'Consonant_Placeholder' : 'PLACEHOLDER', + 'Consonant_Preceding_Repha' : 'Repha', + 'Consonant_Prefixed' : 'X', # Don't care. + 'Consonant_Subjoined' : 'CM', + 'Consonant_Succeeding_Repha' : 'CM', + 'Consonant_With_Stacker' : 'CS', + 'Gemination_Mark' : 'SM', # https://github.com/harfbuzz/harfbuzz/issues/552 + 'Invisible_Stacker' : 'H', + 'Joiner' : 'ZWJ', + 'Modifying_Letter' : 'X', + 'Non_Joiner' : 'ZWNJ', + 'Nukta' : 'N', + 'Number' : 'PLACEHOLDER', + 'Number_Joiner' : 'PLACEHOLDER', # Don't care. + 'Pure_Killer' : 'M', # Is like a vowel matra. + 'Register_Shifter' : 'RS', + 'Syllable_Modifier' : 'SM', + 'Tone_Letter' : 'X', + 'Tone_Mark' : 'N', + 'Virama' : 'H', + 'Visarga' : 'SM', + 'Vowel' : 'V', + 'Vowel_Dependent' : 'M', + 'Vowel_Independent' : 'V', +} +position_map = { + 'Not_Applicable' : 'END', + + 'Left' : 'PRE_C', + 'Top' : 'ABOVE_C', + 'Bottom' : 'BELOW_C', + 'Right' : 'POST_C', + + # These should resolve to the position of the last part of the split sequence. + 'Bottom_And_Right' : 'POST_C', + 'Left_And_Right' : 'POST_C', + 'Top_And_Bottom' : 'BELOW_C', + 'Top_And_Bottom_And_Left' : 'BELOW_C', + 'Top_And_Bottom_And_Right' : 'POST_C', + 'Top_And_Left' : 'ABOVE_C', + 'Top_And_Left_And_Right' : 'POST_C', + 'Top_And_Right' : 'POST_C', + + 'Overstruck' : 'AFTER_MAIN', + 'Visual_order_left' : 'PRE_M', +} + +category_overrides = { + + # These are the variation-selectors. They only appear in the Myanmar grammar + # but are not Myanmar-specific + 0xFE00: 'VS', + 0xFE01: 'VS', + 0xFE02: 'VS', + 0xFE03: 'VS', + 0xFE04: 'VS', + 0xFE05: 'VS', + 0xFE06: 'VS', + 0xFE07: 'VS', + 0xFE08: 'VS', + 0xFE09: 'VS', + 0xFE0A: 'VS', + 0xFE0B: 'VS', + 0xFE0C: 'VS', + 0xFE0D: 'VS', + 0xFE0E: 'VS', + 0xFE0F: 'VS', + + # These appear in the OT Myanmar spec, but are not Myanmar-specific + 0x2015: 'PLACEHOLDER', + 0x2022: 'PLACEHOLDER', + 0x25FB: 'PLACEHOLDER', + 0x25FC: 'PLACEHOLDER', + 0x25FD: 'PLACEHOLDER', + 0x25FE: 'PLACEHOLDER', + + + # Indic + + 0x0930: 'Ra', # Devanagari + 0x09B0: 'Ra', # Bengali + 0x09F0: 'Ra', # Bengali + 0x0A30: 'Ra', # Gurmukhi No Reph + 0x0AB0: 'Ra', # Gujarati + 0x0B30: 'Ra', # Oriya + 0x0BB0: 'Ra', # Tamil No Reph + 0x0C30: 'Ra', # Telugu Reph formed only with ZWJ + 0x0CB0: 'Ra', # Kannada + 0x0D30: 'Ra', # Malayalam No Reph, Logical Repha + + # The following act more like the Bindus. + 0x0953: 'SM', + 0x0954: 'SM', + + # U+0A40 GURMUKHI VOWEL SIGN II may be preceded by U+0A02 GURMUKHI SIGN BINDI. + 0x0A40: 'MPst', + + # The following act like consonants. + 0x0A72: 'C', + 0x0A73: 'C', + 0x1CF5: 'C', + 0x1CF6: 'C', + + # TODO: The following should only be allowed after a Visarga. + # For now, just treat them like regular tone marks. + 0x1CE2: 'A', + 0x1CE3: 'A', + 0x1CE4: 'A', + 0x1CE5: 'A', + 0x1CE6: 'A', + 0x1CE7: 'A', + 0x1CE8: 'A', + + # TODO: The following should only be allowed after some of + # the nasalization marks, maybe only for U+1CE9..U+1CF1. + # For now, just treat them like tone marks. + 0x1CED: 'A', + + # The following take marks in standalone clusters, similar to Avagraha. + 0xA8F2: 'Symbol', + 0xA8F3: 'Symbol', + 0xA8F4: 'Symbol', + 0xA8F5: 'Symbol', + 0xA8F6: 'Symbol', + 0xA8F7: 'Symbol', + 0x1CE9: 'Symbol', + 0x1CEA: 'Symbol', + 0x1CEB: 'Symbol', + 0x1CEC: 'Symbol', + 0x1CEE: 'Symbol', + 0x1CEF: 'Symbol', + 0x1CF0: 'Symbol', + 0x1CF1: 'Symbol', + + 0x0A51: 'M', # https://github.com/harfbuzz/harfbuzz/issues/524 + + # According to ScriptExtensions.txt, these Grantha marks may also be used in Tamil, + # so the Indic shaper needs to know their categories. + 0x11301: 'SM', + 0x11302: 'SM', + 0x11303: 'SM', + 0x1133B: 'N', + 0x1133C: 'N', + + 0x0AFB: 'N', # https://github.com/harfbuzz/harfbuzz/issues/552 + 0x0B55: 'N', # https://github.com/harfbuzz/harfbuzz/issues/2849 + + 0x09FC: 'PLACEHOLDER', # https://github.com/harfbuzz/harfbuzz/pull/1613 + 0x0C80: 'PLACEHOLDER', # https://github.com/harfbuzz/harfbuzz/pull/623 + 0x0D04: 'PLACEHOLDER', # https://github.com/harfbuzz/harfbuzz/pull/3511 + + 0x25CC: 'DOTTEDCIRCLE', + + + # Khmer + + 0x179A: 'Ra', + + 0x17CC: 'Robatic', + 0x17C9: 'Robatic', + 0x17CA: 'Robatic', + + 0x17C6: 'Xgroup', + 0x17CB: 'Xgroup', + 0x17CD: 'Xgroup', + 0x17CE: 'Xgroup', + 0x17CF: 'Xgroup', + 0x17D0: 'Xgroup', + 0x17D1: 'Xgroup', + + 0x17C7: 'Ygroup', + 0x17C8: 'Ygroup', + 0x17DD: 'Ygroup', + 0x17D3: 'Ygroup', # Just guessing. Uniscribe doesn't categorize it. + + 0x17D9: 'PLACEHOLDER', # https://github.com/harfbuzz/harfbuzz/issues/2384 + + + # Myanmar + + # https://docs.microsoft.com/en-us/typography/script-development/myanmar#analyze + + 0x104E: 'C', # The spec says C, IndicSyllableCategory says Consonant_Placeholder + + 0x1004: 'Ra', + 0x101B: 'Ra', + 0x105A: 'Ra', + + 0x1032: 'A', + 0x1036: 'A', + + 0x103A: 'As', + + #0x1040: 'D0', # XXX The spec says D0, but Uniscribe doesn't seem to do. + + 0x103E: 'MH', + 0x1060: 'ML', + 0x103C: 'MR', + 0x103D: 'MW', + 0x1082: 'MW', + 0x103B: 'MY', + 0x105E: 'MY', + 0x105F: 'MY', + + 0x1063: 'PT', + 0x1064: 'PT', + 0x1069: 'PT', + 0x106A: 'PT', + 0x106B: 'PT', + 0x106C: 'PT', + 0x106D: 'PT', + 0xAA7B: 'PT', + + 0x1038: 'SM', + 0x1087: 'SM', + 0x1088: 'SM', + 0x1089: 'SM', + 0x108A: 'SM', + 0x108B: 'SM', + 0x108C: 'SM', + 0x108D: 'SM', + 0x108F: 'SM', + 0x109A: 'SM', + 0x109B: 'SM', + 0x109C: 'SM', + + 0x104A: 'PLACEHOLDER', +} +position_overrides = { + + 0x0A51: 'BELOW_C', # https://github.com/harfbuzz/harfbuzz/issues/524 + + 0x0B01: 'BEFORE_SUB', # Oriya Bindu is BeforeSub in the spec. +} + +def matra_pos_left(u, block): + return "PRE_M" +def matra_pos_right(u, block): + if block == 'Devanagari': return 'AFTER_SUB' + if block == 'Bengali': return 'AFTER_POST' + if block == 'Gurmukhi': return 'AFTER_POST' + if block == 'Gujarati': return 'AFTER_POST' + if block == 'Oriya': return 'AFTER_POST' + if block == 'Tamil': return 'AFTER_POST' + if block == 'Telugu': return 'BEFORE_SUB' if u <= 0x0C42 else 'AFTER_SUB' + if block == 'Kannada': return 'BEFORE_SUB' if u < 0x0CC3 or u > 0x0CD6 else 'AFTER_SUB' + if block == 'Malayalam': return 'AFTER_POST' + return 'AFTER_SUB' +def matra_pos_top(u, block): + # BENG and MLYM don't have top matras. + if block == 'Devanagari': return 'AFTER_SUB' + if block == 'Gurmukhi': return 'AFTER_POST' # Deviate from spec + if block == 'Gujarati': return 'AFTER_SUB' + if block == 'Oriya': return 'AFTER_MAIN' + if block == 'Tamil': return 'AFTER_SUB' + if block == 'Telugu': return 'BEFORE_SUB' + if block == 'Kannada': return 'BEFORE_SUB' + return 'AFTER_SUB' +def matra_pos_bottom(u, block): + if block == 'Devanagari': return 'AFTER_SUB' + if block == 'Bengali': return 'AFTER_SUB' + if block == 'Gurmukhi': return 'AFTER_POST' + if block == 'Gujarati': return 'AFTER_POST' + if block == 'Oriya': return 'AFTER_SUB' + if block == 'Tamil': return 'AFTER_POST' + if block == 'Telugu': return 'BEFORE_SUB' + if block == 'Kannada': return 'BEFORE_SUB' + if block == 'Malayalam': return 'AFTER_POST' + return "AFTER_SUB" +def indic_matra_position(u, pos, block): # Reposition matra + if pos == 'PRE_C': return matra_pos_left(u, block) + if pos == 'POST_C': return matra_pos_right(u, block) + if pos == 'ABOVE_C': return matra_pos_top(u, block) + if pos == 'BELOW_C': return matra_pos_bottom(u, block) + assert (False) + +def position_to_category(pos): + if pos == 'PRE_C': return 'VPre' + if pos == 'ABOVE_C': return 'VAbv' + if pos == 'BELOW_C': return 'VBlw' + if pos == 'POST_C': return 'VPst' + assert(False) + + +defaults = (category_map[defaults[0]], position_map[defaults[1]], defaults[2]) + +indic_data = {} +for k, (cat, pos, block) in combined.items(): + cat = category_map[cat] + pos = position_map[pos] + indic_data[k] = (cat, pos, block) + +for k,new_cat in category_overrides.items(): + (cat, pos, _) = indic_data.get(k, defaults) + indic_data[k] = (new_cat, pos, unicode_data[2][k]) + +# We only expect position for certain types +positioned_categories = ('CM', 'SM', 'RS', 'H', 'M', 'MPst') +for k, (cat, pos, block) in indic_data.items(): + if cat not in positioned_categories: + pos = 'END' + indic_data[k] = (cat, pos, block) + +# Position overrides are more complicated + +# Keep in sync with CONSONANT_FLAGS in the shaper +consonant_categories = ('C', 'CS', 'Ra','CM', 'V', 'PLACEHOLDER', 'DOTTEDCIRCLE') +matra_categories = ('M', 'MPst') +smvd_categories = ('SM', 'VD', 'A', 'Symbol') +for k, (cat, pos, block) in indic_data.items(): + if cat in consonant_categories: + pos = 'BASE_C' + elif cat in matra_categories: + if block.startswith('Khmer') or block.startswith('Myanmar'): + cat = position_to_category(pos) + else: + pos = indic_matra_position(k, pos, block) + elif cat in smvd_categories: + pos = 'SMVD'; + indic_data[k] = (cat, pos, block) + +for k,new_pos in position_overrides.items(): + (cat, pos, _) = indic_data.get(k, defaults) + indic_data[k] = (cat, new_pos, unicode_data[2][k]) + + +values = [{_: 1} for _ in defaults] +for vv in indic_data.values(): + for i,v in enumerate(vv): + values[i][v] = values[i].get (v, 0) + 1 + + + + +# Move the outliers NO-BREAK SPACE and DOTTED CIRCLE out +singles = {} +for u in ALLOWED_SINGLES: + singles[u] = indic_data[u] + del indic_data[u] + +print ("/* == Start of generated table == */") +print ("/*") +print (" * The following table is generated by running:") +print (" *") +print (" * ./gen-indic-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt Blocks.txt") +print (" *") +print (" * on files with these headers:") +print (" *") +for h in headers: + for l in h: + print (" * %s" % (l.strip())) +print (" */") +print () +print ('#include "hb.hh"') +print () +print ('#ifndef HB_NO_OT_SHAPE') +print () +print ('#include "hb-ot-shaper-indic.hh"') +print () +print ('#pragma GCC diagnostic push') +print ('#pragma GCC diagnostic ignored "-Wunused-macros"') +print () + +# Print categories +for shaper in categories: + print ('#include "hb-ot-shaper-%s-machine.hh"' % shaper) +print () +done = {} +for shaper, shaper_cats in categories.items(): + print ('/* %s */' % shaper) + for cat in shaper_cats: + v = shaper[0].upper() + if cat not in done: + print ("#define OT_%s %s_Cat(%s)" % (cat, v, cat)) + done[cat] = v + else: + print ('static_assert (OT_%s == %s_Cat(%s), "");' % (cat, v, cat)) +print () + +# Shorten values +short = [{ + "Repha": 'Rf', + "PLACEHOLDER": 'GB', + "DOTTEDCIRCLE": 'DC', + "VPst": 'VR', + "VPre": 'VL', + "Robatic": 'Rt', + "Xgroup": 'Xg', + "Ygroup": 'Yg', + "As": 'As', +},{ + "END": 'X', + "BASE_C": 'C', + "ABOVE_C": 'T', + "BELOW_C": 'B', + "POST_C": 'R', + "PRE_C": 'L', + "PRE_M": 'LM', + "AFTER_MAIN": 'A', + "AFTER_SUB": 'AS', + "BEFORE_SUB": 'BS', + "AFTER_POST": 'AP', + "SMVD": 'SM', +}] +all_shorts = [{},{}] + +# Add some of the values, to make them more readable, and to avoid duplicates + +for i in range (2): + for v,s in short[i].items (): + all_shorts[i][s] = v + +what = ["OT", "POS"] +what_short = ["_OT", "_POS"] +cat_defs = [] +for i in range (2): + vv = sorted (values[i].keys ()) + for v in vv: + v_no_and = v.replace ('_And_', '_') + if v in short[i]: + s = short[i][v] + else: + s = ''.join ([c for c in v_no_and if ord ('A') <= ord (c) <= ord ('Z')]) + if s in all_shorts[i]: + raise Exception ("Duplicate short value alias", v, all_shorts[i][s]) + all_shorts[i][s] = v + short[i][v] = s + cat_defs.append ((what_short[i] + '_' + s, what[i] + '_' + (v.upper () if i else v), str (values[i][v]), v)) + +maxlen_s = max ([len (c[0]) for c in cat_defs]) +maxlen_l = max ([len (c[1]) for c in cat_defs]) +maxlen_n = max ([len (c[2]) for c in cat_defs]) +for s in what_short: + print () + for c in [c for c in cat_defs if s in c[0]]: + print ("#define %s %s /* %s chars; %s */" % + (c[0].ljust (maxlen_s), c[1].ljust (maxlen_l), c[2].rjust (maxlen_n), c[3])) +print () +print ('#pragma GCC diagnostic pop') +print () +print ("#define INDIC_COMBINE_CATEGORIES(S,M) ((S) | ((M) << 8))") +print () +print ("#define _(S,M) INDIC_COMBINE_CATEGORIES (%s_##S, %s_##M)" % tuple(what_short)) +print () +print () + +total = 0 +used = 0 +last_block = None +def print_block (block, start, end, data): + global total, used, last_block + if block and block != last_block: + print () + print () + print (" /* %s */" % block) + num = 0 + assert start % 8 == 0 + assert (end+1) % 8 == 0 + for u in range (start, end+1): + if u % 8 == 0: + print () + print (" /* %04X */" % u, end="") + if u in data: + num += 1 + d = data.get (u, defaults) + print ("%9s" % ("_(%s,%s)," % (short[0][d[0]], short[1][d[1]])), end="") + + total += end - start + 1 + used += num + if block: + last_block = block + +uu = sorted (indic_data) + +last = -100000 +num = 0 +offset = 0 +starts = [] +ends = [] +print ("static const uint16_t indic_table[] = {") +for u in uu: + if u <= last: + continue + block = indic_data[u][2] + + start = u//8*8 + end = start+1 + while end in uu and block == indic_data[end][2]: + end += 1 + end = (end-1)//8*8 + 7 + + if start != last + 1: + if start - last <= 1+16*2: + print_block (None, last+1, start-1, indic_data) + else: + if last >= 0: + ends.append (last + 1) + offset += ends[-1] - starts[-1] + print () + print () + print ("#define indic_offset_0x%04xu %d" % (start, offset)) + starts.append (start) + + print_block (block, start, end, indic_data) + last = end +ends.append (last + 1) +offset += ends[-1] - starts[-1] +print () +print () +occupancy = used * 100. / total +page_bits = 12 +print ("}; /* Table items: %d; occupancy: %d%% */" % (offset, occupancy)) +print () +print ("uint16_t") +print ("hb_indic_get_categories (hb_codepoint_t u)") +print ("{") +print (" switch (u >> %d)" % page_bits) +print (" {") +pages = set ([u>>page_bits for u in starts+ends+list (singles.keys ())]) +for p in sorted(pages): + print (" case 0x%0Xu:" % p) + for u,d in singles.items (): + if p != u>>page_bits: continue + print (" if (unlikely (u == 0x%04Xu)) return _(%s,%s);" % (u, short[0][d[0]], short[1][d[1]])) + for (start,end) in zip (starts, ends): + if p not in [start>>page_bits, end>>page_bits]: continue + offset = "indic_offset_0x%04xu" % start + print (" if (hb_in_range (u, 0x%04Xu, 0x%04Xu)) return indic_table[u - 0x%04Xu + %s];" % (start, end-1, start, offset)) + print (" break;") + print ("") +print (" default:") +print (" break;") +print (" }") +print (" return _(X,X);") +print ("}") +print () +print ("#undef _") +print ("#undef INDIC_COMBINE_CATEGORIES") +for i in range (2): + print () + vv = sorted (values[i].keys ()) + for v in vv: + print ("#undef %s_%s" % + (what_short[i], short[i][v])) +print () +print ('#endif') +print () +print ("/* == End of generated table == */") + +# Maintain at least 50% occupancy in the table */ +if occupancy < 50: + raise Exception ("Table too sparse, please investigate: ", occupancy) diff --git a/gfx/harfbuzz/src/gen-os2-unicode-ranges.py b/gfx/harfbuzz/src/gen-os2-unicode-ranges.py new file mode 100755 index 0000000000..b1a34d478f --- /dev/null +++ b/gfx/harfbuzz/src/gen-os2-unicode-ranges.py @@ -0,0 +1,50 @@ +#!/usr/bin/env python3 + +"""Generates the code for a sorted unicode range array as used in hb-ot-os2-unicode-ranges.hh +Input is a tab separated list of unicode ranges from the otspec +(https://docs.microsoft.com/en-us/typography/opentype/spec/os2#ur). +""" + +import re +import sys + + +print ("""static OS2Range _hb_os2_unicode_ranges[] = +{""") + +args = sys.argv[1:] +input_file = args[0] + +with open (input_file, mode="r", encoding="utf-8") as f: + + all_ranges = [] + current_bit = 0 + while True: + line = f.readline().strip() + if not line: + break + fields = re.split(r'\t+', line) + if len(fields) == 3: + current_bit = fields[0] + fields = fields[1:] + elif len(fields) > 3: + raise Exception("bad input :(.") + + name = fields[0] + ranges = re.split("-", fields[1]) + if len(ranges) != 2: + raise Exception("bad input :(.") + + v = tuple((int(ranges[0], 16), int(ranges[1], 16), int(current_bit), name)) + all_ranges.append(v) + +all_ranges = sorted(all_ranges, key=lambda t: t[0]) + +for ranges in all_ranges: + start = ("0x%X" % ranges[0]).rjust(8) + end = ("0x%X" % ranges[1]).rjust(8) + bit = ("%s" % ranges[2]).rjust(3) + + print (" {%s, %s, %s}, // %s" % (start, end, bit, ranges[3])) + +print ("""};""") diff --git a/gfx/harfbuzz/src/gen-ragel-artifacts.py b/gfx/harfbuzz/src/gen-ragel-artifacts.py new file mode 100755 index 0000000000..8bbb375bfb --- /dev/null +++ b/gfx/harfbuzz/src/gen-ragel-artifacts.py @@ -0,0 +1,25 @@ +#!/usr/bin/env python3 + +"This tool is intended to be used from meson" + +import os, os.path, sys, subprocess, shutil + +ragel = sys.argv[1] +if not ragel: + sys.exit ('You have to install ragel if you are going to develop HarfBuzz itself') + +if len (sys.argv) < 4: + sys.exit (__doc__) + +OUTPUT = sys.argv[2] +CURRENT_SOURCE_DIR = sys.argv[3] +INPUT = sys.argv[4] + +outdir = os.path.dirname (OUTPUT) +shutil.copy (INPUT, outdir) +rl = os.path.basename (INPUT) +hh = rl.replace ('.rl', '.hh') +subprocess.Popen (ragel.split() + ['-e', '-F1', '-o', hh, rl], cwd=outdir).wait () + +# copy it also to src/ +shutil.copyfile (os.path.join (outdir, hh), os.path.join (CURRENT_SOURCE_DIR, hh)) diff --git a/gfx/harfbuzz/src/gen-tag-table.py b/gfx/harfbuzz/src/gen-tag-table.py new file mode 100755 index 0000000000..7e15c08c56 --- /dev/null +++ b/gfx/harfbuzz/src/gen-tag-table.py @@ -0,0 +1,1216 @@ +#!/usr/bin/env python3 + +"""Generator of the mapping from OpenType tags to BCP 47 tags and vice +versa. + +It creates a ``const LangTag[]``, matching the tags from the OpenType +languages system tag list to the language subtags of the BCP 47 language +subtag registry, with some manual adjustments. The mappings are +supplemented with macrolanguages' sublanguages and retired codes' +replacements, according to BCP 47 and some manual additions where BCP 47 +omits a retired code entirely. + +Also generated is a function, ``hb_ot_ambiguous_tag_to_language``, +intended for use by ``hb_ot_tag_to_language``. It maps OpenType tags +back to BCP 47 tags. Ambiguous OpenType tags (those that correspond to +multiple BCP 47 tags) are listed here, except when the alphabetically +first BCP 47 tag happens to be the chosen disambiguated tag. In that +case, the fallback behavior will choose the right tag anyway. + +usage: ./gen-tag-table.py languagetags language-subtag-registry + +Input files: +* https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags +* https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry +""" + +import collections +import html +from html.parser import HTMLParser +import itertools +import re +import sys +import unicodedata + +if len (sys.argv) != 3: + sys.exit (__doc__) + +def expect (condition, message=None): + if not condition: + if message is None: + raise AssertionError + raise AssertionError (message) + +def write (s): + sys.stdout.flush () + sys.stdout.buffer.write (s.encode ('utf-8')) + +DEFAULT_LANGUAGE_SYSTEM = '' + +# from https://www-01.sil.org/iso639-3/iso-639-3.tab +ISO_639_3_TO_1 = { + 'aar': 'aa', + 'abk': 'ab', + 'afr': 'af', + 'aka': 'ak', + 'amh': 'am', + 'ara': 'ar', + 'arg': 'an', + 'asm': 'as', + 'ava': 'av', + 'ave': 'ae', + 'aym': 'ay', + 'aze': 'az', + 'bak': 'ba', + 'bam': 'bm', + 'bel': 'be', + 'ben': 'bn', + 'bis': 'bi', + 'bod': 'bo', + 'bos': 'bs', + 'bre': 'br', + 'bul': 'bg', + 'cat': 'ca', + 'ces': 'cs', + 'cha': 'ch', + 'che': 'ce', + 'chu': 'cu', + 'chv': 'cv', + 'cor': 'kw', + 'cos': 'co', + 'cre': 'cr', + 'cym': 'cy', + 'dan': 'da', + 'deu': 'de', + 'div': 'dv', + 'dzo': 'dz', + 'ell': 'el', + 'eng': 'en', + 'epo': 'eo', + 'est': 'et', + 'eus': 'eu', + 'ewe': 'ee', + 'fao': 'fo', + 'fas': 'fa', + 'fij': 'fj', + 'fin': 'fi', + 'fra': 'fr', + 'fry': 'fy', + 'ful': 'ff', + 'gla': 'gd', + 'gle': 'ga', + 'glg': 'gl', + 'glv': 'gv', + 'grn': 'gn', + 'guj': 'gu', + 'hat': 'ht', + 'hau': 'ha', + 'hbs': 'sh', + 'heb': 'he', + 'her': 'hz', + 'hin': 'hi', + 'hmo': 'ho', + 'hrv': 'hr', + 'hun': 'hu', + 'hye': 'hy', + 'ibo': 'ig', + 'ido': 'io', + 'iii': 'ii', + 'iku': 'iu', + 'ile': 'ie', + 'ina': 'ia', + 'ind': 'id', + 'ipk': 'ik', + 'isl': 'is', + 'ita': 'it', + 'jav': 'jv', + 'jpn': 'ja', + 'kal': 'kl', + 'kan': 'kn', + 'kas': 'ks', + 'kat': 'ka', + 'kau': 'kr', + 'kaz': 'kk', + 'khm': 'km', + 'kik': 'ki', + 'kin': 'rw', + 'kir': 'ky', + 'kom': 'kv', + 'kon': 'kg', + 'kor': 'ko', + 'kua': 'kj', + 'kur': 'ku', + 'lao': 'lo', + 'lat': 'la', + 'lav': 'lv', + 'lim': 'li', + 'lin': 'ln', + 'lit': 'lt', + 'ltz': 'lb', + 'lub': 'lu', + 'lug': 'lg', + 'mah': 'mh', + 'mal': 'ml', + 'mar': 'mr', + 'mkd': 'mk', + 'mlg': 'mg', + 'mlt': 'mt', + 'mol': 'mo', + 'mon': 'mn', + 'mri': 'mi', + 'msa': 'ms', + 'mya': 'my', + 'nau': 'na', + 'nav': 'nv', + 'nbl': 'nr', + 'nde': 'nd', + 'ndo': 'ng', + 'nep': 'ne', + 'nld': 'nl', + 'nno': 'nn', + 'nob': 'nb', + 'nor': 'no', + 'nya': 'ny', + 'oci': 'oc', + 'oji': 'oj', + 'ori': 'or', + 'orm': 'om', + 'oss': 'os', + 'pan': 'pa', + 'pli': 'pi', + 'pol': 'pl', + 'por': 'pt', + 'pus': 'ps', + 'que': 'qu', + 'roh': 'rm', + 'ron': 'ro', + 'run': 'rn', + 'rus': 'ru', + 'sag': 'sg', + 'san': 'sa', + 'sin': 'si', + 'slk': 'sk', + 'slv': 'sl', + 'sme': 'se', + 'smo': 'sm', + 'sna': 'sn', + 'snd': 'sd', + 'som': 'so', + 'sot': 'st', + 'spa': 'es', + 'sqi': 'sq', + 'srd': 'sc', + 'srp': 'sr', + 'ssw': 'ss', + 'sun': 'su', + 'swa': 'sw', + 'swe': 'sv', + 'tah': 'ty', + 'tam': 'ta', + 'tat': 'tt', + 'tel': 'te', + 'tgk': 'tg', + 'tgl': 'tl', + 'tha': 'th', + 'tir': 'ti', + 'ton': 'to', + 'tsn': 'tn', + 'tso': 'ts', + 'tuk': 'tk', + 'tur': 'tr', + 'twi': 'tw', + 'uig': 'ug', + 'ukr': 'uk', + 'urd': 'ur', + 'uzb': 'uz', + 'ven': 've', + 'vie': 'vi', + 'vol': 'vo', + 'wln': 'wa', + 'wol': 'wo', + 'xho': 'xh', + 'yid': 'yi', + 'yor': 'yo', + 'zha': 'za', + 'zho': 'zh', + 'zul': 'zu', +} + +class LanguageTag (object): + """A BCP 47 language tag. + + Attributes: + subtags (List[str]): The list of subtags in this tag. + grandfathered (bool): Whether this tag is grandfathered. If + ``true``, the entire lowercased tag is the ``language`` + and the other subtag fields are empty. + language (str): The language subtag. + script (str): The script subtag. + region (str): The region subtag. + variant (str): The variant subtag. + + Args: + tag (str): A BCP 47 language tag. + + """ + def __init__ (self, tag): + global bcp_47 + self.subtags = tag.lower ().split ('-') + self.grandfathered = tag.lower () in bcp_47.grandfathered + if self.grandfathered: + self.language = tag.lower () + self.script = '' + self.region = '' + self.variant = '' + else: + self.language = self.subtags[0] + self.script = self._find_first (lambda s: len (s) == 4 and s[0] > '9', self.subtags) + self.region = self._find_first (lambda s: len (s) == 2 and s[0] > '9' or len (s) == 3 and s[0] <= '9', self.subtags[1:]) + self.variant = self._find_first (lambda s: len (s) > 4 or len (s) == 4 and s[0] <= '9', self.subtags) + + def __str__(self): + return '-'.join(self.subtags) + + def __repr__ (self): + return 'LanguageTag(%r)' % str(self) + + @staticmethod + def _find_first (function, sequence): + try: + return next (iter (filter (function, sequence))) + except StopIteration: + return None + + def is_complex (self): + """Return whether this tag is too complex to represent as a + ``LangTag`` in the generated code. + + Complex tags need to be handled in + ``hb_ot_tags_from_complex_language``. + + Returns: + Whether this tag is complex. + """ + return not (len (self.subtags) == 1 + or self.grandfathered + and len (self.subtags[1]) != 3 + and ot.from_bcp_47[self.subtags[0]] == ot.from_bcp_47[self.language]) + + def get_group (self): + """Return the group into which this tag should be categorized in + ``hb_ot_tags_from_complex_language``. + + The group is the first letter of the tag, or ``'und'`` if this tag + should not be matched in a ``switch`` statement in the generated + code. + + Returns: + This tag's group. + """ + return ('und' + if (self.language == 'und' + or self.variant in bcp_47.prefixes and len (bcp_47.prefixes[self.variant]) == 1) + else self.language[0]) + +class OpenTypeRegistryParser (HTMLParser): + """A parser for the OpenType language system tag registry. + + Attributes: + header (str): The "last updated" line of the registry. + names (Mapping[str, str]): A map of language system tags to the + names they are given in the registry. + ranks (DefaultDict[str, int]): A map of language system tags to + numbers. If a single BCP 47 tag corresponds to multiple + OpenType tags, the tags are ordered in increasing order by + rank. The rank is based on the number of BCP 47 tags + associated with a tag, though it may be manually modified. + to_bcp_47 (DefaultDict[str, AbstractSet[str]]): A map of + OpenType language system tags to sets of BCP 47 tags. + from_bcp_47 (DefaultDict[str, AbstractSet[str]]): ``to_bcp_47`` + inverted. Its values start as unsorted sets; + ``sort_languages`` converts them to sorted lists. + from_bcp_47_uninherited (Optional[Dict[str, AbstractSet[str]]]): + A copy of ``from_bcp_47``. It starts as ``None`` and is + populated at the beginning of the first call to + ``inherit_from_macrolanguages``. + + """ + def __init__ (self): + HTMLParser.__init__ (self) + self.header = '' + self.names = {} + self.ranks = collections.defaultdict (int) + self.to_bcp_47 = collections.defaultdict (set) + self.from_bcp_47 = collections.defaultdict (set) + self.from_bcp_47_uninherited = None + # Whether the parser is in a element + self._td = False + # Whether the parser is after a
element within the current element + self._br = False + # The text of the elements of the current element. + self._current_tr = [] + + def handle_starttag (self, tag, attrs): + if tag == 'br': + self._br = True + elif tag == 'meta': + for attr, value in attrs: + if attr == 'name' and value == 'updated_at': + self.header = self.get_starttag_text () + break + elif tag == 'td': + self._td = True + self._current_tr.append ('') + elif tag == 'tr': + self._br = False + self._current_tr = [] + + def handle_endtag (self, tag): + if tag == 'td': + self._td = False + elif tag == 'tr' and self._current_tr: + expect (2 <= len (self._current_tr) <= 3) + name = self._current_tr[0].strip () + tag = self._current_tr[1].strip ("\t\n\v\f\r '") + rank = 0 + if len (tag) > 4: + expect (tag.endswith (' (deprecated)'), 'ill-formed OpenType tag: %s' % tag) + name += ' (deprecated)' + tag = tag.split (' ')[0] + rank = 1 + self.names[tag] = re.sub (' languages$', '', name) + if not self._current_tr[2]: + return + iso_codes = self._current_tr[2].strip () + self.to_bcp_47[tag].update (ISO_639_3_TO_1.get (code, code) for code in iso_codes.replace (' ', '').split (',')) + rank += 2 * len (self.to_bcp_47[tag]) + self.ranks[tag] = rank + + def handle_data (self, data): + if self._td and not self._br: + self._current_tr[-1] += data + + def handle_charref (self, name): + self.handle_data (html.unescape ('&#%s;' % name)) + + def handle_entityref (self, name): + self.handle_data (html.unescape ('&%s;' % name)) + + def parse (self, filename): + """Parse the OpenType language system tag registry. + + Args: + filename (str): The file name of the registry. + """ + with open (filename, encoding='utf-8') as f: + self.feed (f.read ()) + expect (self.header) + for tag, iso_codes in self.to_bcp_47.items (): + for iso_code in iso_codes: + self.from_bcp_47[iso_code].add (tag) + + def add_language (self, bcp_47_tag, ot_tag): + """Add a language as if it were in the registry. + + Args: + bcp_47_tag (str): A BCP 47 tag. If the tag is more than just + a language subtag, and if the language subtag is a + macrolanguage, then new languages are added corresponding + to the macrolanguages' individual languages with the + remainder of the tag appended. + ot_tag (str): An OpenType language system tag. + """ + global bcp_47 + self.to_bcp_47[ot_tag].add (bcp_47_tag) + self.from_bcp_47[bcp_47_tag].add (ot_tag) + if bcp_47_tag.lower () not in bcp_47.grandfathered: + try: + [macrolanguage, suffix] = bcp_47_tag.split ('-', 1) + if macrolanguage in bcp_47.macrolanguages: + s = set () + for language in bcp_47.macrolanguages[macrolanguage]: + if language.lower () not in bcp_47.grandfathered: + s.add ('%s-%s' % (language, suffix)) + bcp_47.macrolanguages['%s-%s' % (macrolanguage, suffix)] = s + except ValueError: + pass + + @staticmethod + def _remove_language (tag_1, dict_1, dict_2): + for tag_2 in dict_1.pop (tag_1): + dict_2[tag_2].remove (tag_1) + if not dict_2[tag_2]: + del dict_2[tag_2] + + def remove_language_ot (self, ot_tag): + """Remove an OpenType tag from the registry. + + Args: + ot_tag (str): An OpenType tag. + """ + self._remove_language (ot_tag, self.to_bcp_47, self.from_bcp_47) + + def remove_language_bcp_47 (self, bcp_47_tag): + """Remove a BCP 47 tag from the registry. + + Args: + bcp_47_tag (str): A BCP 47 tag. + """ + self._remove_language (bcp_47_tag, self.from_bcp_47, self.to_bcp_47) + + def inherit_from_macrolanguages (self): + """Copy mappings from macrolanguages to individual languages. + + If a BCP 47 tag for an individual mapping has no OpenType + mapping but its macrolanguage does, the mapping is copied to + the individual language. For example, als (Tosk Albanian) has no + explicit mapping, so it inherits from sq (Albanian) the mapping + to SQI. + + However, if an OpenType tag maps to a BCP 47 macrolanguage and + some but not all of its individual languages, the mapping is not + inherited from the macrolanguage to the missing individual + languages. For example, INUK (Nunavik Inuktitut) is mapped to + ike (Eastern Canadian Inuktitut) and iu (Inuktitut) but not to + ikt (Inuinnaqtun, which is an individual language of iu), so + this method does not add a mapping from ikt to INUK. + + If a BCP 47 tag for a macrolanguage has no OpenType mapping but + some of its individual languages do, their mappings are copied + to the macrolanguage. + """ + global bcp_47 + first_time = self.from_bcp_47_uninherited is None + if first_time: + self.from_bcp_47_uninherited = dict (self.from_bcp_47) + for macrolanguage, languages in dict (bcp_47.macrolanguages).items (): + ot_macrolanguages = { + ot_macrolanguage for ot_macrolanguage in self.from_bcp_47_uninherited.get (macrolanguage, set ()) + } + blocked_ot_macrolanguages = set () + if 'retired code' not in bcp_47.scopes.get (macrolanguage, ''): + for ot_macrolanguage in ot_macrolanguages: + round_trip_macrolanguages = { + l for l in self.to_bcp_47[ot_macrolanguage] + if 'retired code' not in bcp_47.scopes.get (l, '') + } + round_trip_languages = { + l for l in languages + if 'retired code' not in bcp_47.scopes.get (l, '') + } + intersection = round_trip_macrolanguages & round_trip_languages + if intersection and intersection != round_trip_languages: + blocked_ot_macrolanguages.add (ot_macrolanguage) + if ot_macrolanguages: + for ot_macrolanguage in ot_macrolanguages: + if ot_macrolanguage not in blocked_ot_macrolanguages: + for language in languages: + self.add_language (language, ot_macrolanguage) + if not blocked_ot_macrolanguages: + self.ranks[ot_macrolanguage] += 1 + elif first_time: + for language in languages: + if language in self.from_bcp_47_uninherited: + ot_macrolanguages |= self.from_bcp_47_uninherited[language] + else: + ot_macrolanguages.clear () + if not ot_macrolanguages: + break + for ot_macrolanguage in ot_macrolanguages: + self.add_language (macrolanguage, ot_macrolanguage) + + def sort_languages (self): + """Sort the values of ``from_bcp_47`` in ascending rank order.""" + for language, tags in self.from_bcp_47.items (): + self.from_bcp_47[language] = sorted (tags, + key=lambda t: (self.ranks[t] + rank_delta (language, t), t)) + +ot = OpenTypeRegistryParser () + +class BCP47Parser (object): + """A parser for the BCP 47 subtag registry. + + Attributes: + header (str): The "File-Date" line of the registry. + names (Mapping[str, str]): A map of subtags to the names they + are given in the registry. Each value is a + ``'\\n'``-separated list of names. + scopes (Mapping[str, str]): A map of language subtags to strings + suffixed to language names, including suffixes to explain + language scopes. + macrolanguages (DefaultDict[str, AbstractSet[str]]): A map of + language subtags to the sets of language subtags which + inherit from them. See + ``OpenTypeRegistryParser.inherit_from_macrolanguages``. + prefixes (DefaultDict[str, AbstractSet[str]]): A map of variant + subtags to their prefixes. + grandfathered (AbstractSet[str]): The set of grandfathered tags, + normalized to lowercase. + + """ + def __init__ (self): + self.header = '' + self.names = {} + self.scopes = {} + self.macrolanguages = collections.defaultdict (set) + self.prefixes = collections.defaultdict (set) + self.grandfathered = set () + + def parse (self, filename): + """Parse the BCP 47 subtag registry. + + Args: + filename (str): The file name of the registry. + """ + with open (filename, encoding='utf-8') as f: + subtag_type = None + subtag = None + deprecated = False + has_preferred_value = False + line_buffer = '' + for line in itertools.chain (f, ['']): + line = line.rstrip () + if line.startswith (' '): + line_buffer += line[1:] + continue + line, line_buffer = line_buffer, line + if line.startswith ('Type: '): + subtag_type = line.split (' ')[1] + deprecated = False + has_preferred_value = False + elif line.startswith ('Subtag: ') or line.startswith ('Tag: '): + subtag = line.split (' ')[1] + if subtag_type == 'grandfathered': + self.grandfathered.add (subtag.lower ()) + elif line.startswith ('Description: '): + description = line.split (' ', 1)[1].replace (' (individual language)', '') + description = re.sub (' (\(family\)|\((individual |macro)language\)|languages)$', '', + description) + if subtag in self.names: + self.names[subtag] += '\n' + description + else: + self.names[subtag] = description + elif subtag_type == 'language' or subtag_type == 'grandfathered': + if line.startswith ('Scope: '): + scope = line.split (' ')[1] + if scope == 'macrolanguage': + scope = ' [macrolanguage]' + elif scope == 'collection': + scope = ' [collection]' + else: + continue + self.scopes[subtag] = scope + elif line.startswith ('Deprecated: '): + self.scopes[subtag] = ' (retired code)' + self.scopes.get (subtag, '') + deprecated = True + elif deprecated and line.startswith ('Comments: see '): + # If a subtag is split into multiple replacement subtags, + # it essentially represents a macrolanguage. + for language in line.replace (',', '').split (' ')[2:]: + self._add_macrolanguage (subtag, language) + elif line.startswith ('Preferred-Value: '): + # If a subtag is deprecated in favor of a single replacement subtag, + # it is either a dialect or synonym of the preferred subtag. Either + # way, it is close enough to the truth to consider the replacement + # the macrolanguage of the deprecated language. + has_preferred_value = True + macrolanguage = line.split (' ')[1] + self._add_macrolanguage (macrolanguage, subtag) + elif not has_preferred_value and line.startswith ('Macrolanguage: '): + self._add_macrolanguage (line.split (' ')[1], subtag) + elif subtag_type == 'variant': + if line.startswith ('Deprecated: '): + self.scopes[subtag] = ' (retired code)' + self.scopes.get (subtag, '') + elif line.startswith ('Prefix: '): + self.prefixes[subtag].add (line.split (' ')[1]) + elif line.startswith ('File-Date: '): + self.header = line + expect (self.header) + + def _add_macrolanguage (self, macrolanguage, language): + global ot + if language not in ot.from_bcp_47: + for l in self.macrolanguages.get (language, set ()): + self._add_macrolanguage (macrolanguage, l) + if macrolanguage not in ot.from_bcp_47: + for ls in list (self.macrolanguages.values ()): + if macrolanguage in ls: + ls.add (language) + return + self.macrolanguages[macrolanguage].add (language) + + def remove_extra_macrolanguages (self): + """Make every language have at most one macrolanguage.""" + inverted = collections.defaultdict (list) + for macrolanguage, languages in self.macrolanguages.items (): + for language in languages: + inverted[language].append (macrolanguage) + for language, macrolanguages in inverted.items (): + if len (macrolanguages) > 1: + macrolanguages.sort (key=lambda ml: len (self.macrolanguages[ml])) + biggest_macrolanguage = macrolanguages.pop () + for macrolanguage in macrolanguages: + self._add_macrolanguage (biggest_macrolanguage, macrolanguage) + + def _get_name_piece (self, subtag): + """Return the first name of a subtag plus its scope suffix. + + Args: + subtag (str): A BCP 47 subtag. + + Returns: + The name form of ``subtag``. + """ + return self.names[subtag].split ('\n')[0] + self.scopes.get (subtag, '') + + def get_name (self, lt): + """Return the names of the subtags in a language tag. + + Args: + lt (LanguageTag): A BCP 47 language tag. + + Returns: + The name form of ``lt``. + """ + name = self._get_name_piece (lt.language) + if lt.script: + name += '; ' + self._get_name_piece (lt.script.title ()) + if lt.region: + name += '; ' + self._get_name_piece (lt.region.upper ()) + if lt.variant: + name += '; ' + self._get_name_piece (lt.variant) + return name + +bcp_47 = BCP47Parser () + +ot.parse (sys.argv[1]) +bcp_47.parse (sys.argv[2]) + +ot.add_language ('ary', 'MOR') + +ot.add_language ('ath', 'ATH') + +ot.add_language ('bai', 'BML') + +ot.ranks['BAL'] = ot.ranks['KAR'] + 1 + +ot.add_language ('ber', 'BBR') + +ot.remove_language_ot ('PGR') +ot.add_language ('el-polyton', 'PGR') + +bcp_47.macrolanguages['et'] = {'ekk'} + +bcp_47.names['flm'] = 'Falam Chin' +bcp_47.scopes['flm'] = ' (retired code)' +bcp_47.macrolanguages['flm'] = {'cfm'} + +ot.ranks['FNE'] = ot.ranks['TNE'] + 1 + +ot.add_language ('und-fonipa', 'IPPH') + +ot.add_language ('und-fonnapa', 'APPH') + +ot.remove_language_ot ('IRT') +ot.add_language ('ga-Latg', 'IRT') + +ot.add_language ('hy-arevmda', 'HYE') + +ot.remove_language_ot ('KGE') +ot.add_language ('und-Geok', 'KGE') + +bcp_47.macrolanguages['id'] = {'in'} + +bcp_47.macrolanguages['ijo'] = {'ijc'} + +ot.add_language ('kht', 'KHN') +ot.names['KHN'] = ot.names['KHT'] + ' (Microsoft fonts)' +ot.ranks['KHN'] = ot.ranks['KHT'] + 1 + +ot.ranks['LCR'] = ot.ranks['MCR'] + 1 + +ot.names['MAL'] = 'Malayalam Traditional' +ot.ranks['MLR'] += 1 + +bcp_47.names['mhv'] = 'Arakanese' +bcp_47.scopes['mhv'] = ' (retired code)' + +ot.add_language ('mnw-TH', 'MONT') + +ot.add_language ('no', 'NOR') + +ot.add_language ('oc-provenc', 'PRO') + +ot.remove_language_ot ('QUZ') +ot.add_language ('qu', 'QUZ') +ot.add_language ('qub', 'QWH') +ot.add_language ('qud', 'QVI') +ot.add_language ('qug', 'QVI') +ot.add_language ('qul', 'QUH') +ot.add_language ('qup', 'QVI') +ot.add_language ('qur', 'QWH') +ot.add_language ('qus', 'QUH') +ot.add_language ('quw', 'QVI') +ot.add_language ('qux', 'QWH') +ot.add_language ('qva', 'QWH') +ot.add_language ('qvh', 'QWH') +ot.add_language ('qvj', 'QVI') +ot.add_language ('qvl', 'QWH') +ot.add_language ('qvm', 'QWH') +ot.add_language ('qvn', 'QWH') +ot.add_language ('qvo', 'QVI') +ot.add_language ('qvp', 'QWH') +ot.add_language ('qvw', 'QWH') +ot.add_language ('qvz', 'QVI') +ot.add_language ('qwa', 'QWH') +ot.add_language ('qws', 'QWH') +ot.add_language ('qxa', 'QWH') +ot.add_language ('qxc', 'QWH') +ot.add_language ('qxh', 'QWH') +ot.add_language ('qxl', 'QVI') +ot.add_language ('qxn', 'QWH') +ot.add_language ('qxo', 'QWH') +ot.add_language ('qxr', 'QVI') +ot.add_language ('qxt', 'QWH') +ot.add_language ('qxw', 'QWH') + +bcp_47.macrolanguages['ro-MD'].add ('mo') + +ot.remove_language_ot ('SYRE') +ot.remove_language_ot ('SYRJ') +ot.remove_language_ot ('SYRN') +ot.add_language ('und-Syre', 'SYRE') +ot.add_language ('und-Syrj', 'SYRJ') +ot.add_language ('und-Syrn', 'SYRN') + +bcp_47.names['xst'] = "Silt'e" +bcp_47.scopes['xst'] = ' (retired code)' +bcp_47.macrolanguages['xst'] = {'stv', 'wle'} + +ot.add_language ('xwo', 'TOD') + +ot.remove_language_ot ('ZHH') +ot.remove_language_ot ('ZHP') +ot.remove_language_ot ('ZHT') +ot.remove_language_ot ('ZHTM') +bcp_47.macrolanguages['zh'].remove ('lzh') +bcp_47.macrolanguages['zh'].remove ('yue') +ot.add_language ('zh-Hant-MO', 'ZHH') +ot.add_language ('zh-Hant-MO', 'ZHTM') +ot.add_language ('zh-Hant-HK', 'ZHH') +ot.add_language ('zh-Hans', 'ZHS') +ot.add_language ('zh-Hant', 'ZHT') +ot.add_language ('zh-HK', 'ZHH') +ot.add_language ('zh-MO', 'ZHH') +ot.add_language ('zh-MO', 'ZHTM') +ot.add_language ('zh-TW', 'ZHT') +ot.add_language ('lzh', 'ZHT') +ot.add_language ('lzh-Hans', 'ZHS') +ot.add_language ('yue', 'ZHH') +ot.add_language ('yue-Hans', 'ZHS') + +bcp_47.macrolanguages['zom'] = {'yos'} + +def rank_delta (bcp_47, ot): + """Return a delta to apply to a BCP 47 tag's rank. + + Most OpenType tags have a constant rank, but a few have ranks that + depend on the BCP 47 tag. + + Args: + bcp_47 (str): A BCP 47 tag. + ot (str): An OpenType tag to. + + Returns: + A number to add to ``ot``'s rank when sorting ``bcp_47``'s + OpenType equivalents. + """ + if bcp_47 == 'ak' and ot == 'AKA': + return -1 + if bcp_47 == 'tw' and ot == 'TWI': + return -1 + return 0 + +disambiguation = { + 'ALT': 'alt', + 'ARK': 'rki', + 'ATH': 'ath', + 'BHI': 'bhb', + 'BLN': 'bjt', + 'BTI': 'beb', + 'CCHN': 'cco', + 'CMR': 'swb', + 'CPP': 'crp', + 'CRR': 'crx', + 'DUJ': 'dwu', + 'ECR': 'crj', + 'HAL': 'cfm', + 'HND': 'hnd', + 'HYE': 'hyw', + 'KIS': 'kqs', + 'KUI': 'uki', + 'LRC': 'bqi', + 'NDB': 'nd', + 'NIS': 'njz', + 'PLG': 'pce', + 'PRO': 'pro', + 'QIN': 'bgr', + 'QUH': 'quh', + 'QVI': 'qvi', + 'QWH': 'qwh', + 'SIG': 'stv', + 'SRB': 'sr', + 'SXT': 'xnj', + 'ZHH': 'zh-HK', + 'ZHS': 'zh-Hans', + 'ZHT': 'zh-Hant', + 'ZHTM': 'zh-MO', +} + +ot.inherit_from_macrolanguages () +bcp_47.remove_extra_macrolanguages () +ot.inherit_from_macrolanguages () +ot.names[DEFAULT_LANGUAGE_SYSTEM] = '*/' +ot.ranks[DEFAULT_LANGUAGE_SYSTEM] = max (ot.ranks.values ()) + 1 +for tricky_ot_tag in filter (lambda tag: re.match ('[A-Z]{3}$', tag), ot.names): + possible_bcp_47_tag = tricky_ot_tag.lower () + if possible_bcp_47_tag in bcp_47.names and not ot.from_bcp_47[possible_bcp_47_tag]: + ot.add_language (possible_bcp_47_tag, DEFAULT_LANGUAGE_SYSTEM) + bcp_47.macrolanguages[possible_bcp_47_tag] = set () +ot.sort_languages () + +print ('/* == Start of generated table == */') +print ('/*') +print (' * The following table is generated by running:') +print (' *') +print (' * %s languagetags language-subtag-registry' % sys.argv[0]) +print (' *') +print (' * on files with these headers:') +print (' *') +print (' * %s' % ot.header.strip ()) +print (' * %s' % bcp_47.header) +print (' */') +print () +print ('#ifndef HB_OT_TAG_TABLE_HH') +print ('#define HB_OT_TAG_TABLE_HH') +print () + +def hb_tag (tag): + """Convert a tag to ``HB_TAG`` form. + + Args: + tag (str): An OpenType tag. + + Returns: + A snippet of C++ representing ``tag``. + """ + if tag == DEFAULT_LANGUAGE_SYSTEM: + return 'HB_TAG_NONE\t ' + return "HB_TAG('%s','%s','%s','%s')" % tuple (('%-4s' % tag)[:4]) + +def get_variant_set (name): + """Return a set of variant language names from a name. + + Args: + name (str): A list of language names from the BCP 47 registry, + joined on ``'\\n'``. + + Returns: + A set of normalized language names. + """ + return set (unicodedata.normalize ('NFD', n.replace ('\u2019', "'")) + .encode ('ASCII', 'ignore') + .strip () + for n in re.split ('[\n(),]', name) if n) + +def language_name_intersection (a, b): + """Return the names in common between two language names. + + Args: + a (str): A list of language names from the BCP 47 registry, + joined on ``'\\n'``. + b (str): A list of language names from the BCP 47 registry, + joined on ``'\\n'``. + + Returns: + The normalized language names shared by ``a`` and ``b``. + """ + return get_variant_set (a).intersection (get_variant_set (b)) + +def get_matching_language_name (intersection, candidates): + return next (iter (c for c in candidates if not intersection.isdisjoint (get_variant_set (c)))) + +def same_tag (bcp_47_tag, ot_tags): + return len (bcp_47_tag) == 3 and len (ot_tags) == 1 and bcp_47_tag == ot_tags[0].lower () + +for language_len in (2, 3): + if language_len == 3: + print ('#ifndef HB_NO_LANGUAGE_LONG') + print ('static const LangTag ot_languages%d[] = {' % language_len) + for language, tags in sorted (ot.from_bcp_47.items ()): + if language == '' or '-' in language: + continue + if len(language) != language_len: continue + commented_out = same_tag (language, tags) + for i, tag in enumerate (tags, start=1): + print ('%s{%s,\t%s},' % ('/*' if commented_out else ' ', hb_tag (language), hb_tag (tag)), end='') + if commented_out: + print ('*/', end='') + print ('\t/* ', end='') + bcp_47_name = bcp_47.names.get (language, '') + bcp_47_name_candidates = bcp_47_name.split ('\n') + ot_name = ot.names[tag] + scope = bcp_47.scopes.get (language, '') + if tag == DEFAULT_LANGUAGE_SYSTEM: + write (f'{bcp_47_name_candidates[0]}{scope} != {ot.names[language.upper ()]}') + else: + intersection = language_name_intersection (bcp_47_name, ot_name) + if not intersection: + write ('%s%s -> %s' % (bcp_47_name_candidates[0], scope, ot_name)) + else: + name = get_matching_language_name (intersection, bcp_47_name_candidates) + bcp_47.names[language] = name + write ('%s%s' % (name if len (name) > len (ot_name) else ot_name, scope)) + print (' */') + print ('};') + if language_len == 3: + print ('#endif') + print () + +print ('/**') +print (' * hb_ot_tags_from_complex_language:') +print (' * @lang_str: a BCP 47 language tag to convert.') +print (' * @limit: a pointer to the end of the substring of @lang_str to consider for') +print (' * conversion.') +print (' * @count: maximum number of language tags to retrieve (IN) and actual number of') +print (' * language tags retrieved (OUT). If no tags are retrieved, it is not modified.') +print (' * @tags: array of size at least @language_count to store the language tag') +print (' * results') +print (' *') +print (' * Converts a multi-subtag BCP 47 language tag to language tags.') +print (' *') +print (' * Return value: Whether any language systems were retrieved.') +print (' **/') +print ('static inline bool') +print ('hb_ot_tags_from_complex_language (const char *lang_str,') +print ('\t\t\t\t const char *limit,') +print ('\t\t\t\t unsigned int *count /* IN/OUT */,') +print ('\t\t\t\t hb_tag_t *tags /* OUT */)') +print ('{') + +def print_subtag_matches (subtag, string, new_line): + if subtag: + if new_line: + print () + print ('\t&& ', end='') + print ('subtag_matches (%s, limit, "-%s", %i)' % (string, subtag, 1 + len (subtag)), end='') + +complex_tags = collections.defaultdict (list) +for initial, group in itertools.groupby ((lt_tags for lt_tags in [ + (LanguageTag (language), tags) + for language, tags in sorted (ot.from_bcp_47.items (), + key=lambda i: (-len (i[0]), i[0])) + ] if lt_tags[0].is_complex ()), + key=lambda lt_tags: lt_tags[0].get_group ()): + complex_tags[initial] += group + +# Calculate the min length of the subtags outside the switch +min_subtag_len = 100 +for initial, items in sorted (complex_tags.items ()): + if initial != 'und': + continue + for lt, tags in items: + if not tags: + continue + subtag_len = 0 + subtag_len += 1 + len (lt.script) if lt.script is not None else 0 + subtag_len += 1 + len (lt.region) if lt.region is not None else 0 + subtag_len += 1 + len (lt.variant) if lt.variant is not None else 0 + min_subtag_len = min(subtag_len, min_subtag_len) + +print (' if (limit - lang_str >= %d)' % (min_subtag_len + 2)) +print (' {') +print (" const char *p = strchr (lang_str, '-');") +print (" if (!p || p >= limit || limit - p < %i) goto out;" % min_subtag_len) +for initial, items in sorted (complex_tags.items ()): + if initial != 'und': + continue + for lt, tags in items: + if not tags: + continue + if lt.variant in bcp_47.prefixes: + expect (next (iter (bcp_47.prefixes[lt.variant])) == lt.language, + '%s is not a valid prefix of %s' % (lt.language, lt.variant)) + print (' if (', end='') + print_subtag_matches (lt.script, 'p', False) + print_subtag_matches (lt.region, 'p', False) + print_subtag_matches (lt.variant, 'p', False) + print (')') + print (' {') + write (' /* %s */' % bcp_47.get_name (lt)) + print () + if len (tags) == 1: + write (' tags[0] = %s; /* %s */' % (hb_tag (tags[0]), ot.names[tags[0]])) + print () + print (' *count = 1;') + else: + print (' hb_tag_t possible_tags[] = {') + for tag in tags: + write (' %s, /* %s */' % (hb_tag (tag), ot.names[tag])) + print () + print (' };') + print (' for (i = 0; i < %s && i < *count; i++)' % len (tags)) + print ('\ttags[i] = possible_tags[i];') + print (' *count = i;') + print (' return true;') + print (' }') +print (' }') +print ('out:') + +print (' switch (lang_str[0])') +print (' {') +for initial, items in sorted (complex_tags.items ()): + if initial == 'und': + continue + print (" case '%s':" % initial) + for lt, tags in items: + if not tags: + continue + print (' if (', end='') + script = lt.script + region = lt.region + if lt.grandfathered: + print ('0 == strcmp (&lang_str[1], "%s")' % lt.language[1:], end='') + else: + string_literal = lt.language[1:] + '-' + if script: + string_literal += script + script = None + if region: + string_literal += '-' + region + region = None + if string_literal[-1] == '-': + print ('0 == strncmp (&lang_str[1], "%s", %i)' % (string_literal, len (string_literal)), end='') + else: + print ('lang_matches (&lang_str[1], limit, "%s", %i)' % (string_literal, len (string_literal)), end='') + print_subtag_matches (script, 'lang_str', True) + print_subtag_matches (region, 'lang_str', True) + print_subtag_matches (lt.variant, 'lang_str', True) + print (')') + print (' {') + write (' /* %s */' % bcp_47.get_name (lt)) + print () + if len (tags) == 1: + write (' tags[0] = %s; /* %s */' % (hb_tag (tags[0]), ot.names[tags[0]])) + print () + print (' *count = 1;') + else: + print (' unsigned int i;') + print (' hb_tag_t possible_tags[] = {') + for tag in tags: + write ('\t%s, /* %s */' % (hb_tag (tag), ot.names[tag])) + print () + print (' };') + print (' for (i = 0; i < %s && i < *count; i++)' % len (tags)) + print ('\ttags[i] = possible_tags[i];') + print (' *count = i;') + print (' return true;') + print (' }') + print (' break;') + +print (' }') +print (' return false;') +print ('}') +print () +print ('/**') +print (' * hb_ot_ambiguous_tag_to_language') +print (' * @tag: A language tag.') +print (' *') +print (' * Converts @tag to a BCP 47 language tag if it is ambiguous (it corresponds to') +print (' * many language tags) and the best tag is not the alphabetically first, or if') +print (' * the best tag consists of multiple subtags, or if the best tag does not appear') +print (' * in #ot_languages.') +print (' *') +print (' * Return value: The #hb_language_t corresponding to the BCP 47 language tag,') +print (' * or #HB_LANGUAGE_INVALID if @tag is not ambiguous.') +print (' **/') +print ('static inline hb_language_t') +print ('hb_ot_ambiguous_tag_to_language (hb_tag_t tag)') +print ('{') +print (' switch (tag)') +print (' {') + +def verify_disambiguation_dict (): + """Verify and normalize ``disambiguation``. + + ``disambiguation`` is a map of ambiguous OpenType language system + tags to the particular BCP 47 tags they correspond to. This function + checks that all its keys really are ambiguous and that each key's + value is valid for that key. It checks that no ambiguous tag is + missing, except when it can figure out which BCP 47 tag is the best + by itself. + + It modifies ``disambiguation`` to remove keys whose values are the + same as those that the fallback would return anyway, and to add + ambiguous keys whose disambiguations it determined automatically. + + Raises: + AssertionError: Verification failed. + """ + global bcp_47 + global disambiguation + global ot + for ot_tag, bcp_47_tags in ot.to_bcp_47.items (): + if ot_tag == DEFAULT_LANGUAGE_SYSTEM: + primary_tags = [] + else: + primary_tags = list (t for t in bcp_47_tags if t not in bcp_47.grandfathered and ot.from_bcp_47.get (t)[0] == ot_tag) + if len (primary_tags) == 1: + expect (ot_tag not in disambiguation, 'unnecessary disambiguation for OT tag: %s' % ot_tag) + if '-' in primary_tags[0]: + disambiguation[ot_tag] = primary_tags[0] + else: + first_tag = sorted (t for t in bcp_47_tags if t not in bcp_47.grandfathered and ot_tag in ot.from_bcp_47.get (t))[0] + if primary_tags[0] != first_tag: + disambiguation[ot_tag] = primary_tags[0] + elif len (primary_tags) == 0: + expect (ot_tag not in disambiguation, 'There is no possible valid disambiguation for %s' % ot_tag) + else: + original_languages = [t for t in primary_tags if t in ot.from_bcp_47_uninherited and 'retired code' not in bcp_47.scopes.get (t, '')] + if len (original_languages) == 1: + macrolanguages = original_languages + else: + macrolanguages = [t for t in primary_tags if bcp_47.scopes.get (t) == ' [macrolanguage]'] + if len (macrolanguages) != 1: + macrolanguages = list (t for t in primary_tags if bcp_47.scopes.get (t) == ' [collection]') + if len (macrolanguages) != 1: + macrolanguages = list (t for t in primary_tags if 'retired code' not in bcp_47.scopes.get (t, '')) + if len (macrolanguages) != 1: + expect (ot_tag in disambiguation, 'ambiguous OT tag: %s %s' % (ot_tag, str (macrolanguages))) + expect (disambiguation[ot_tag] in bcp_47_tags, + '%s is not a valid disambiguation for %s' % (disambiguation[ot_tag], ot_tag)) + elif ot_tag not in disambiguation: + disambiguation[ot_tag] = macrolanguages[0] + different_bcp_47_tags = sorted (t for t in bcp_47_tags if not same_tag (t, ot.from_bcp_47.get (t))) + if different_bcp_47_tags and disambiguation[ot_tag] == different_bcp_47_tags[0] and '-' not in disambiguation[ot_tag]: + del disambiguation[ot_tag] + for ot_tag in disambiguation.keys (): + expect (ot_tag in ot.to_bcp_47, 'unknown OT tag: %s' % ot_tag) + +verify_disambiguation_dict () +for ot_tag, bcp_47_tag in sorted (disambiguation.items ()): + write (' case %s: /* %s */' % (hb_tag (ot_tag), ot.names[ot_tag])) + print () + write (' return hb_language_from_string (\"%s\", -1); /* %s */' % (bcp_47_tag, bcp_47.get_name (LanguageTag (bcp_47_tag)))) + print () + +print (' default:') +print (' return HB_LANGUAGE_INVALID;') +print (' }') +print ('}') + +print () +print ('#endif /* HB_OT_TAG_TABLE_HH */') +print () +print ('/* == End of generated table == */') + diff --git a/gfx/harfbuzz/src/gen-ucd-table.py b/gfx/harfbuzz/src/gen-ucd-table.py new file mode 100755 index 0000000000..d85ae4faa8 --- /dev/null +++ b/gfx/harfbuzz/src/gen-ucd-table.py @@ -0,0 +1,202 @@ +#!/usr/bin/env python3 + +"""usage: ./gen-ucd-table ucd.nounihan.grouped.xml [/path/to/hb-common.h] + +Input file: +* https://unicode.org/Public/UCD/latest/ucdxml/ucd.nounihan.grouped.zip +""" + +import sys, re +import logging +logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO) + +if len (sys.argv) not in (2, 3): + sys.exit (__doc__) + +# https://github.com/harfbuzz/packtab +import packTab +import packTab.ucdxml + +logging.info('Loading UCDXML...') +ucdxml = packTab.ucdxml.load_ucdxml(sys.argv[1]) +ucd = packTab.ucdxml.ucdxml_get_repertoire(ucdxml) + +hb_common_h = 'hb-common.h' if len (sys.argv) < 3 else sys.argv[2] + +logging.info('Preparing data tables...') + + +# This is how the data is encoded: +# +# General_Category (gc), Canonical_Combining_Class (ccc), +# and Script (sc) are encoded as integers. +# +# Mirroring character (bmg) is encoded as difference from +# the original character. +# +# Composition & Decomposition (dm) are encoded elaborately, +# as discussed below. + +gc = [u['gc'] for u in ucd] +ccc = [int(u['ccc']) for u in ucd] +bmg = [int(v, 16) - int(u) if v else 0 for u,v in enumerate(u['bmg'] for u in ucd)] +sc = [u['sc'] for u in ucd] + + +# Prepare Compose / Decompose data +# +# This code is very dense. See hb_ucd_compose() / hb_ucd_decompose() for the logic. + +dm = {i:tuple(int(v, 16) for v in u['dm'].split()) for i,u in enumerate(ucd) + if u['dm'] != '#' and u['dt'] == 'can' and not (0xAC00 <= i < 0xAC00+11172)} +ce = {i for i,u in enumerate(ucd) if u['Comp_Ex'] == 'Y'} + +assert not any(v for v in dm.values() if len(v) not in (1,2)) +dm1 = sorted(set(v for v in dm.values() if len(v) == 1)) +assert all((v[0] >> 16) in (0,2) for v in dm1) +dm1_p0_array = ['0x%04Xu' % (v[0] & 0xFFFF) for v in dm1 if (v[0] >> 16) == 0] +dm1_p2_array = ['0x%04Xu' % (v[0] & 0xFFFF) for v in dm1 if (v[0] >> 16) == 2] +dm1_order = {v:i+1 for i,v in enumerate(dm1)} + +dm2 = sorted((v+(i if i not in ce and not ccc[i] else 0,), v) + for i,v in dm.items() if len(v) == 2) + +filt = lambda v: ((v[0] & 0xFFFFF800) == 0x0000 and + (v[1] & 0xFFFFFF80) == 0x0300 and + (v[2] & 0xFFF0C000) == 0x0000) +dm2_u32_array = [v for v in dm2 if filt(v[0])] +dm2_u64_array = [v for v in dm2 if not filt(v[0])] +assert dm2_u32_array + dm2_u64_array == dm2 +dm2_u32_array = ["HB_CODEPOINT_ENCODE3_11_7_14 (0x%04Xu, 0x%04Xu, 0x%04Xu)" % v[0] for v in dm2_u32_array] +dm2_u64_array = ["HB_CODEPOINT_ENCODE3 (0x%04Xu, 0x%04Xu, 0x%04Xu)" % v[0] for v in dm2_u64_array] + +l = 1 + len(dm1_p0_array) + len(dm1_p2_array) +dm2_order = {v[1]:i+l for i,v in enumerate(dm2)} + +dm_order = {None: 0} +dm_order.update(dm1_order) +dm_order.update(dm2_order) + + +# Prepare General_Category / Script mapping arrays + +gc_order = dict() +for i,v in enumerate(('Cc', 'Cf', 'Cn', 'Co', 'Cs', 'Ll', 'Lm', 'Lo', 'Lt', 'Lu', + 'Mc', 'Me', 'Mn', 'Nd', 'Nl', 'No', 'Pc', 'Pd', 'Pe', 'Pf', + 'Pi', 'Po', 'Ps', 'Sc', 'Sk', 'Sm', 'So', 'Zl', 'Zp', 'Zs',)): + gc_order[i] = v + gc_order[v] = i + +sc_order = dict() +sc_array = [] +sc_re = re.compile(r"\b(HB_SCRIPT_[_A-Z]*).*HB_TAG [(]'(.)','(.)','(.)','(.)'[)]") +for line in open(hb_common_h): + m = sc_re.search (line) + if not m: continue + name = m.group(1) + tag = ''.join(m.group(i) for i in range(2, 6)) + i = len(sc_array) + sc_order[tag] = i + sc_order[i] = tag + sc_array.append(name) + + +# Write out main data + +DEFAULT = 'DEFAULT' +COMPACT = 'COMPACT' +SLOPPY = 'SLOPPY' + +compression_level = { + DEFAULT: 5, + COMPACT: 9, + SLOPPY: 9, +} + +logging.info('Generating output...') +print("/* == Start of generated table == */") +print("/*") +print(" * The following table is generated by running:") +print(" *") +print(" * ./gen-ucd-table.py ucd.nounihan.grouped.xml") +print(" *") +print(" * on file with this description:", ucdxml.description) +print(" */") +print() +print("#ifndef HB_UCD_TABLE_HH") +print("#define HB_UCD_TABLE_HH") +print() +print('#include "hb.hh"') +print() + + +# Write mapping data + +code = packTab.Code('_hb_ucd') +sc_array, _ = code.addArray('hb_script_t', 'sc_map', sc_array) +dm1_p0_array, _ = code.addArray('uint16_t', 'dm1_p0_map', dm1_p0_array) +dm1_p2_array, _ = code.addArray('uint16_t', 'dm1_p2_map', dm1_p2_array) +dm2_u32_array, _ = code.addArray('uint32_t', 'dm2_u32_map', dm2_u32_array) +dm2_u64_array, _ = code.addArray('uint64_t', 'dm2_u64_map', dm2_u64_array) +code.print_c(linkage='static inline') + +datasets = [ + ('gc', gc, 'Cn', gc_order), + ('ccc', ccc, 0, None), + ('bmg', bmg, 0, None), + ('sc', sc, 'Zzzz', sc_order), + ('dm', dm, None, dm_order), +] + + +# Write main data + +for step in (DEFAULT, COMPACT, SLOPPY): + compression = compression_level[step] + logging.info(' Compression=%d:' % compression) + print() + if step == DEFAULT: + print('#ifndef HB_OPTIMIZE_SIZE') + elif step == COMPACT: + print('#elif !defined(HB_NO_UCD_UNASSIGNED)') + elif step == SLOPPY: + print('#else') + else: + assert False + print() + + if step == SLOPPY: + for i in range(len(gc)): + if (i % 128) and gc[i] == 'Cn': + gc[i] = gc[i - 1] + for i in range(len(gc) - 2, -1, -1): + if ((i + 1) % 128) and gc[i] == 'Cn': + gc[i] = gc[i + 1] + for i in range(len(sc)): + if (i % 128) and sc[i] == 'Zzzz': + sc[i] = sc[i - 1] + for i in range(len(sc) - 2, -1, -1): + if ((i + 1) % 128) and sc[i] == 'Zzzz': + sc[i] = sc[i + 1] + + + code = packTab.Code('_hb_ucd') + + for name,data,default,mapping in datasets: + sol = packTab.pack_table(data, default, mapping=mapping, compression=compression) + logging.info(' Dataset=%-8s FullCost=%d' % (name, sol.fullCost)) + sol.genCode(code, name) + + code.print_c(linkage='static inline') + + print() + + +print('#endif') +print() + +print() +print("#endif /* HB_UCD_TABLE_HH */") +print() +print("/* == End of generated table == */") +logging.info('Done.') diff --git a/gfx/harfbuzz/src/gen-use-table.py b/gfx/harfbuzz/src/gen-use-table.py new file mode 100755 index 0000000000..e8b76dfb5f --- /dev/null +++ b/gfx/harfbuzz/src/gen-use-table.py @@ -0,0 +1,507 @@ +#!/usr/bin/env python3 +# flake8: noqa: F821 + +import logging +logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO) + +"""usage: ./gen-use-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt ArabicShaping.txt DerivedCoreProperties.txt UnicodeData.txt Blocks.txt Scripts.txt IndicSyllabicCategory-Additional.txt IndicPositionalCategory-Additional.txt + +Input files: +* https://unicode.org/Public/UCD/latest/ucd/IndicSyllabicCategory.txt +* https://unicode.org/Public/UCD/latest/ucd/IndicPositionalCategory.txt +* https://unicode.org/Public/UCD/latest/ucd/ArabicShaping.txt +* https://unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt +* https://unicode.org/Public/UCD/latest/ucd/UnicodeData.txt +* https://unicode.org/Public/UCD/latest/ucd/Blocks.txt +* https://unicode.org/Public/UCD/latest/ucd/Scripts.txt +* ms-use/IndicSyllabicCategory-Additional.txt +* ms-use/IndicPositionalCategory-Additional.txt +""" + +import sys + +if len (sys.argv) != 10: + sys.exit (__doc__) + +DISABLED_SCRIPTS = { + 'Arabic', + 'Lao', + 'Samaritan', + 'Syriac', + 'Thai', +} + +files = [open (x, encoding='utf-8') for x in sys.argv[1:]] + +headers = [[f.readline () for i in range (2)] for j,f in enumerate(files) if j != 4] +for j in range(7, 9): + for line in files[j]: + line = line.rstrip() + if not line: + break + headers[j - 1].append(line) +headers.append (["UnicodeData.txt does not have a header."]) + +unicode_data = [{} for _ in files] +values = [{} for _ in files] +for i, f in enumerate (files): + for line in f: + + j = line.find ('#') + if j >= 0: + line = line[:j] + + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + + uu = fields[0].split ('..') + start = int (uu[0], 16) + if len (uu) == 1: + end = start + else: + end = int (uu[1], 16) + + t = fields[1 if i not in [2, 4] else 2] + + if i == 2: + t = 'jt_' + t + elif i == 3 and t != 'Default_Ignorable_Code_Point': + continue + elif i == 7 and t == 'Consonant_Final_Modifier': + # TODO: https://github.com/MicrosoftDocs/typography-issues/issues/336 + t = 'Syllable_Modifier' + elif i == 8 and t == 'NA': + t = 'Not_Applicable' + + i0 = i if i < 7 else i - 7 + for u in range (start, end + 1): + unicode_data[i0][u] = t + values[i0][t] = values[i0].get (t, 0) + end - start + 1 + +defaults = ('Other', 'Not_Applicable', 'jt_X', '', 'Cn', 'No_Block', 'Unknown') + +# Merge data into one dict: +for i,v in enumerate (defaults): + values[i][v] = values[i].get (v, 0) + 1 +combined = {} +for i,d in enumerate (unicode_data): + for u,v in d.items (): + if not u in combined: + if i >= 4: + continue + combined[u] = list (defaults) + combined[u][i] = v +combined = {k: v for k, v in combined.items() if v[6] not in DISABLED_SCRIPTS} + + +property_names = [ + # General_Category + 'Cc', 'Cf', 'Cn', 'Co', 'Cs', 'Ll', 'Lm', 'Lo', 'Lt', 'Lu', 'Mc', + 'Me', 'Mn', 'Nd', 'Nl', 'No', 'Pc', 'Pd', 'Pe', 'Pf', 'Pi', 'Po', + 'Ps', 'Sc', 'Sk', 'Sm', 'So', 'Zl', 'Zp', 'Zs', + # Indic_Syllabic_Category + 'Other', + 'Bindu', + 'Visarga', + 'Avagraha', + 'Nukta', + 'Virama', + 'Pure_Killer', + 'Invisible_Stacker', + 'Vowel_Independent', + 'Vowel_Dependent', + 'Vowel', + 'Consonant_Placeholder', + 'Consonant', + 'Consonant_Dead', + 'Consonant_With_Stacker', + 'Consonant_Prefixed', + 'Consonant_Preceding_Repha', + 'Consonant_Succeeding_Repha', + 'Consonant_Subjoined', + 'Consonant_Medial', + 'Consonant_Final', + 'Consonant_Head_Letter', + 'Consonant_Initial_Postfixed', + 'Modifying_Letter', + 'Tone_Letter', + 'Tone_Mark', + 'Gemination_Mark', + 'Cantillation_Mark', + 'Register_Shifter', + 'Syllable_Modifier', + 'Consonant_Killer', + 'Non_Joiner', + 'Joiner', + 'Number_Joiner', + 'Number', + 'Brahmi_Joining_Number', + 'Symbol_Modifier', + 'Hieroglyph', + 'Hieroglyph_Joiner', + 'Hieroglyph_Segment_Begin', + 'Hieroglyph_Segment_End', + # Indic_Positional_Category + 'Not_Applicable', + 'Right', + 'Left', + 'Visual_Order_Left', + 'Left_And_Right', + 'Top', + 'Bottom', + 'Top_And_Bottom', + 'Top_And_Bottom_And_Left', + 'Top_And_Right', + 'Top_And_Left', + 'Top_And_Left_And_Right', + 'Bottom_And_Left', + 'Bottom_And_Right', + 'Top_And_Bottom_And_Right', + 'Overstruck', + # Joining_Type + 'jt_C', + 'jt_D', + 'jt_L', + 'jt_R', + 'jt_T', + 'jt_U', + 'jt_X', +] + +class PropertyValue(object): + def __init__(self, name_): + self.name = name_ + def __str__(self): + return self.name + def __eq__(self, other): + return self.name == (other if isinstance(other, str) else other.name) + def __ne__(self, other): + return not (self == other) + def __hash__(self): + return hash(str(self)) + +property_values = {} + +for name in property_names: + value = PropertyValue(name) + assert value not in property_values + assert value not in globals() + property_values[name] = value +globals().update(property_values) + + +def is_BASE(U, UISC, UDI, UGC, AJT): + return (UISC in [Number, Consonant, Consonant_Head_Letter, + Tone_Letter, + Vowel_Independent, + ] or + # TODO: https://github.com/MicrosoftDocs/typography-issues/issues/484 + AJT in [jt_C, jt_D, jt_L, jt_R] and UISC != Joiner or + (UGC == Lo and UISC in [Avagraha, Bindu, Consonant_Final, Consonant_Medial, + Consonant_Subjoined, Vowel, Vowel_Dependent])) +def is_BASE_NUM(U, UISC, UDI, UGC, AJT): + return UISC == Brahmi_Joining_Number +def is_BASE_OTHER(U, UISC, UDI, UGC, AJT): + if UISC == Consonant_Placeholder: return True + return U in [0x2015, 0x2022, 0x25FB, 0x25FC, 0x25FD, 0x25FE] +def is_CGJ(U, UISC, UDI, UGC, AJT): + # Also includes VARIATION_SELECTOR and ZWJ + return UISC == Joiner or UDI and UGC in [Mc, Me, Mn] +def is_CONS_FINAL(U, UISC, UDI, UGC, AJT): + return ((UISC == Consonant_Final and UGC != Lo) or + UISC == Consonant_Succeeding_Repha) +def is_CONS_FINAL_MOD(U, UISC, UDI, UGC, AJT): + return UISC == Syllable_Modifier +def is_CONS_MED(U, UISC, UDI, UGC, AJT): + # Consonant_Initial_Postfixed is new in Unicode 11; not in the spec. + return (UISC == Consonant_Medial and UGC != Lo or + UISC == Consonant_Initial_Postfixed) +def is_CONS_MOD(U, UISC, UDI, UGC, AJT): + return UISC in [Nukta, Gemination_Mark, Consonant_Killer] +def is_CONS_SUB(U, UISC, UDI, UGC, AJT): + return UISC == Consonant_Subjoined and UGC != Lo +def is_CONS_WITH_STACKER(U, UISC, UDI, UGC, AJT): + return UISC == Consonant_With_Stacker +def is_HALANT(U, UISC, UDI, UGC, AJT): + return UISC == Virama and not is_HALANT_OR_VOWEL_MODIFIER(U, UISC, UDI, UGC, AJT) +def is_HALANT_OR_VOWEL_MODIFIER(U, UISC, UDI, UGC, AJT): + # Split off of HALANT + return U == 0x0DCA +def is_HALANT_NUM(U, UISC, UDI, UGC, AJT): + return UISC == Number_Joiner +def is_HIEROGLYPH(U, UISC, UDI, UGC, AJT): + return UISC == Hieroglyph +def is_HIEROGLYPH_JOINER(U, UISC, UDI, UGC, AJT): + return UISC == Hieroglyph_Joiner +def is_HIEROGLYPH_SEGMENT_BEGIN(U, UISC, UDI, UGC, AJT): + return UISC == Hieroglyph_Segment_Begin +def is_HIEROGLYPH_SEGMENT_END(U, UISC, UDI, UGC, AJT): + return UISC == Hieroglyph_Segment_End +def is_INVISIBLE_STACKER(U, UISC, UDI, UGC, AJT): + # Split off of HALANT + return (UISC == Invisible_Stacker + and not is_SAKOT(U, UISC, UDI, UGC, AJT) + ) +def is_ZWNJ(U, UISC, UDI, UGC, AJT): + return UISC == Non_Joiner +def is_OTHER(U, UISC, UDI, UGC, AJT): + # Also includes BASE_IND and SYM + return ((UGC == Po or UISC in [Consonant_Dead, Joiner, Modifying_Letter, Other]) + and not is_BASE(U, UISC, UDI, UGC, AJT) + and not is_BASE_OTHER(U, UISC, UDI, UGC, AJT) + and not is_CGJ(U, UISC, UDI, UGC, AJT) + and not is_SYM_MOD(U, UISC, UDI, UGC, AJT) + and not is_Word_Joiner(U, UISC, UDI, UGC, AJT) + ) +def is_REPHA(U, UISC, UDI, UGC, AJT): + return UISC in [Consonant_Preceding_Repha, Consonant_Prefixed] +def is_SAKOT(U, UISC, UDI, UGC, AJT): + # Split off of HALANT + return U == 0x1A60 +def is_SYM_MOD(U, UISC, UDI, UGC, AJT): + return UISC == Symbol_Modifier +def is_VOWEL(U, UISC, UDI, UGC, AJT): + return (UISC == Pure_Killer or + UGC != Lo and UISC in [Vowel, Vowel_Dependent]) +def is_VOWEL_MOD(U, UISC, UDI, UGC, AJT): + return (UISC in [Tone_Mark, Cantillation_Mark, Register_Shifter, Visarga] or + UGC != Lo and UISC == Bindu) +def is_Word_Joiner(U, UISC, UDI, UGC, AJT): + # Also includes Rsv + return (UDI and U not in [0x115F, 0x1160, 0x3164, 0xFFA0, 0x1BCA0, 0x1BCA1, 0x1BCA2, 0x1BCA3] + and UISC == Other + and not is_CGJ(U, UISC, UDI, UGC, AJT) + ) or UGC == Cn + +use_mapping = { + 'B': is_BASE, + 'N': is_BASE_NUM, + 'GB': is_BASE_OTHER, + 'CGJ': is_CGJ, + 'F': is_CONS_FINAL, + 'FM': is_CONS_FINAL_MOD, + 'M': is_CONS_MED, + 'CM': is_CONS_MOD, + 'SUB': is_CONS_SUB, + 'CS': is_CONS_WITH_STACKER, + 'H': is_HALANT, + 'HVM': is_HALANT_OR_VOWEL_MODIFIER, + 'HN': is_HALANT_NUM, + 'IS': is_INVISIBLE_STACKER, + 'G': is_HIEROGLYPH, + 'J': is_HIEROGLYPH_JOINER, + 'SB': is_HIEROGLYPH_SEGMENT_BEGIN, + 'SE': is_HIEROGLYPH_SEGMENT_END, + 'ZWNJ': is_ZWNJ, + 'O': is_OTHER, + 'R': is_REPHA, + 'Sk': is_SAKOT, + 'SM': is_SYM_MOD, + 'V': is_VOWEL, + 'VM': is_VOWEL_MOD, + 'WJ': is_Word_Joiner, +} + +use_positions = { + 'F': { + 'Abv': [Top], + 'Blw': [Bottom], + 'Pst': [Right], + }, + 'M': { + 'Abv': [Top], + 'Blw': [Bottom, Bottom_And_Left, Bottom_And_Right], + 'Pst': [Right], + 'Pre': [Left, Top_And_Bottom_And_Left], + }, + 'CM': { + 'Abv': [Top], + 'Blw': [Bottom, Overstruck], + }, + 'V': { + 'Abv': [Top, Top_And_Bottom, Top_And_Bottom_And_Right, Top_And_Right], + 'Blw': [Bottom, Overstruck, Bottom_And_Right], + 'Pst': [Right], + 'Pre': [Left, Top_And_Left, Top_And_Left_And_Right, Left_And_Right], + }, + 'VM': { + 'Abv': [Top], + 'Blw': [Bottom, Overstruck], + 'Pst': [Right], + 'Pre': [Left], + }, + 'SM': { + 'Abv': [Top], + 'Blw': [Bottom], + }, + 'H': None, + 'HVM': None, + 'IS': None, + 'B': None, + 'FM': { + 'Abv': [Top], + 'Blw': [Bottom], + 'Pst': [Not_Applicable], + }, + 'R': None, + 'SUB': None, +} + +def map_to_use(data): + out = {} + items = use_mapping.items() + for U, (UISC, UIPC, AJT, UDI, UGC, UBlock, _) in data.items(): + + # Resolve Indic_Syllabic_Category + + # TODO: These don't have UISC assigned in Unicode 13.0.0, but have UIPC + if 0x1CE2 <= U <= 0x1CE8: UISC = Cantillation_Mark + + # Tibetan: + # TODO: These don't have UISC assigned in Unicode 13.0.0, but have UIPC + if 0x0F18 <= U <= 0x0F19 or 0x0F3E <= U <= 0x0F3F: UISC = Vowel_Dependent + + # TODO: U+1CED should only be allowed after some of + # the nasalization marks, maybe only for U+1CE9..U+1CF1. + if U == 0x1CED: UISC = Tone_Mark + + values = [k for k,v in items if v(U, UISC, UDI, UGC, AJT)] + assert len(values) == 1, "%s %s %s %s %s %s" % (hex(U), UISC, UDI, UGC, AJT, values) + USE = values[0] + + # Resolve Indic_Positional_Category + + # TODO: https://github.com/harfbuzz/harfbuzz/pull/1037 + # and https://github.com/harfbuzz/harfbuzz/issues/1631 + if U in [0x11302, 0x11303, 0x114C1]: UIPC = Top + + assert (UIPC in [Not_Applicable, Visual_Order_Left] or U == 0x0F7F or + USE in use_positions), "%s %s %s %s %s %s %s" % (hex(U), UIPC, USE, UISC, UDI, UGC, AJT) + + pos_mapping = use_positions.get(USE, None) + if pos_mapping: + values = [k for k,v in pos_mapping.items() if v and UIPC in v] + assert len(values) == 1, "%s %s %s %s %s %s %s %s" % (hex(U), UIPC, USE, UISC, UDI, UGC, AJT, values) + USE = USE + values[0] + + out[U] = (USE, UBlock) + return out + +use_data = map_to_use(combined) + +print ("/* == Start of generated table == */") +print ("/*") +print (" * The following table is generated by running:") +print (" *") +print (" * {} IndicSyllabicCategory.txt IndicPositionalCategory.txt ArabicShaping.txt DerivedCoreProperties.txt UnicodeData.txt Blocks.txt Scripts.txt IndicSyllabicCategory-Additional.txt IndicPositionalCategory-Additional.txt".format (sys.argv[0])) +print (" *") +print (" * on files with these headers:") +print (" *") +for h in headers: + for l in h: + print (" * %s" % (l.strip())) +print (" */") +print () +print ("#ifndef HB_OT_SHAPER_USE_TABLE_HH") +print ("#define HB_OT_SHAPER_USE_TABLE_HH") +print () +print ('#include "hb.hh"') +print () +print ('#include "hb-ot-shaper-use-machine.hh"') +print () + +total = 0 +used = 0 +last_block = None +def print_block (block, start, end, use_data): + global total, used, last_block + if block and block != last_block: + print () + print () + print (" /* %s */" % block) + if start % 16: + print (' ' * (20 + (start % 16 * 6)), end='') + num = 0 + assert start % 8 == 0 + assert (end+1) % 8 == 0 + for u in range (start, end+1): + if u % 16 == 0: + print () + print (" /* %04X */" % u, end='') + if u in use_data: + num += 1 + d = use_data.get (u) + if d is not None: + d = d[0] + elif u in unicode_data[4]: + d = 'O' + else: + d = 'WJ' + print ("%6s," % d, end='') + + total += end - start + 1 + used += num + if block: + last_block = block + +uu = sorted (use_data.keys ()) + +last = -100000 +num = 0 +offset = 0 +starts = [] +ends = [] +print ('#pragma GCC diagnostic push') +print ('#pragma GCC diagnostic ignored "-Wunused-macros"') +for k,v in sorted(use_mapping.items()): + if k in use_positions and use_positions[k]: continue + print ("#define %s USE(%s) /* %s */" % (k, k, v.__name__[3:])) +for k,v in sorted(use_positions.items()): + if not v: continue + for suf in v.keys(): + tag = k + suf + print ("#define %s USE(%s)" % (tag, tag)) +print ('#pragma GCC diagnostic pop') +print ("") + + +import packTab +data = {u:v[0] for u,v in use_data.items()} + +DEFAULT = 5 +COMPACT = 9 +for compression in (DEFAULT, COMPACT): + + logging.info(' Compression=%d:' % compression) + print() + if compression == DEFAULT: + print('#ifndef HB_OPTIMIZE_SIZE') + elif compression == COMPACT: + print('#else') + else: + assert False + print() + + code = packTab.Code('hb_use') + sol = packTab.pack_table(data, compression=compression, default='O') + logging.info(' FullCost=%d' % (sol.fullCost)) + sol.genCode(code, f'get_category') + code.print_c(linkage='static inline') + print () + +print('#endif') + +print () +for k in sorted(use_mapping.keys()): + if k in use_positions and use_positions[k]: continue + print ("#undef %s" % k) +for k,v in sorted(use_positions.items()): + if not v: continue + for suf in v.keys(): + tag = k + suf + print ("#undef %s" % tag) +print () +print () +print ("#endif /* HB_OT_SHAPER_USE_TABLE_HH */") +print ("/* == End of generated table == */") diff --git a/gfx/harfbuzz/src/gen-vowel-constraints.py b/gfx/harfbuzz/src/gen-vowel-constraints.py new file mode 100755 index 0000000000..3c1f6211eb --- /dev/null +++ b/gfx/harfbuzz/src/gen-vowel-constraints.py @@ -0,0 +1,229 @@ +#!/usr/bin/env python3 + +"""Generator of the function to prohibit certain vowel sequences. + +It creates ``_hb_preprocess_text_vowel_constraints``, which inserts dotted +circles into sequences prohibited by the USE script development spec. +This function should be used as the ``preprocess_text`` of an +``hb_ot_shaper_t``. + +usage: ./gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt Scripts.txt + +Input file: +* https://unicode.org/Public/UCD/latest/ucd/Scripts.txt +""" + +import collections +def write (s): + sys.stdout.flush () + sys.stdout.buffer.write (s.encode ('utf-8')) +import sys + +if len (sys.argv) != 3: + sys.exit (__doc__) + +with open (sys.argv[2], encoding='utf-8') as f: + scripts_header = [f.readline () for i in range (2)] + scripts = {} + script_order = {} + for line in f: + j = line.find ('#') + if j >= 0: + line = line[:j] + fields = [x.strip () for x in line.split (';')] + if len (fields) == 1: + continue + uu = fields[0].split ('..') + start = int (uu[0], 16) + if len (uu) == 1: + end = start + else: + end = int (uu[1], 16) + script = fields[1] + for u in range (start, end + 1): + scripts[u] = script + if script not in script_order: + script_order[script] = start + +class ConstraintSet (object): + """A set of prohibited code point sequences. + + Args: + constraint (List[int]): A prohibited code point sequence. + + """ + def __init__ (self, constraint): + # Either a list or a dictionary. As a list of code points, it + # represents a prohibited code point sequence. As a dictionary, + # it represents a set of prohibited sequences, where each item + # represents the set of prohibited sequences starting with the + # key (a code point) concatenated with any of the values + # (ConstraintSets). + self._c = constraint + + def add (self, constraint): + """Add a constraint to this set.""" + if not constraint: + return + first = constraint[0] + rest = constraint[1:] + if isinstance (self._c, list): + if constraint == self._c[:len (constraint)]: + self._c = constraint + elif self._c != constraint[:len (self._c)]: + self._c = {self._c[0]: ConstraintSet (self._c[1:])} + if isinstance (self._c, dict): + if first in self._c: + self._c[first].add (rest) + else: + self._c[first] = ConstraintSet (rest) + + @staticmethod + def _indent (depth): + return (' ' * depth).replace (' ', '\t') + + def __str__ (self, index=0, depth=4): + s = [] + indent = self._indent (depth) + if isinstance (self._c, list): + if len (self._c) == 0: + assert index == 2, 'Cannot use `matched` for this constraint; the general case has not been implemented' + s.append ('{}matched = true;\n'.format (indent)) + elif len (self._c) == 1: + assert index == 1, 'Cannot use `matched` for this constraint; the general case has not been implemented' + s.append ('{}matched = 0x{:04X}u == buffer->cur ({}).codepoint;\n'.format (indent, next (iter (self._c)), index or '')) + else: + s.append ('{}if (0x{:04X}u == buffer->cur ({}).codepoint &&\n'.format (indent, self._c[0], index or '')) + if index: + s.append ('{}buffer->idx + {} < count &&\n'.format (self._indent (depth + 2), index + 1)) + for i, cp in enumerate (self._c[1:], start=1): + s.append ('{}0x{:04X}u == buffer->cur ({}).codepoint{}\n'.format ( + self._indent (depth + 2), cp, index + i, ')' if i == len (self._c) - 1 else ' &&')) + s.append ('{}{{\n'.format (indent)) + for i in range (index): + s.append ('{}(void) buffer->next_glyph ();\n'.format (self._indent (depth + 1))) + s.append ('{}matched = true;\n'.format (self._indent (depth + 1))) + s.append ('{}}}\n'.format (indent)) + else: + s.append ('{}switch (buffer->cur ({}).codepoint)\n'.format(indent, index or '')) + s.append ('{}{{\n'.format (indent)) + cases = collections.defaultdict (set) + for first, rest in sorted (self._c.items ()): + cases[rest.__str__ (index + 1, depth + 2)].add (first) + for body, labels in sorted (cases.items (), key=lambda b_ls: sorted (b_ls[1])[0]): + for i, cp in enumerate (sorted (labels)): + if i % 4 == 0: + s.append (self._indent (depth + 1)) + else: + s.append (' ') + s.append ('case 0x{:04X}u:{}'.format (cp, '\n' if i % 4 == 3 else '')) + if len (labels) % 4 != 0: + s.append ('\n') + s.append (body) + s.append ('{}break;\n'.format (self._indent (depth + 2))) + s.append ('{}}}\n'.format (indent)) + return ''.join (s) + +constraints = {} +with open (sys.argv[1], encoding='utf-8') as f: + constraints_header = [] + while True: + line = f.readline ().strip () + if line == '#': + break + constraints_header.append(line) + for line in f: + j = line.find ('#') + if j >= 0: + line = line[:j] + constraint = [int (cp, 16) for cp in line.split (';')[0].split ()] + if not constraint: continue + assert 2 <= len (constraint), 'Prohibited sequence is too short: {}'.format (constraint) + script = scripts[constraint[0]] + if script in constraints: + constraints[script].add (constraint) + else: + constraints[script] = ConstraintSet (constraint) + assert constraints, 'No constraints found' + +print ('/* == Start of generated functions == */') +print ('/*') +print (' * The following functions are generated by running:') +print (' *') +print (' * %s ms-use/IndicShapingInvalidCluster.txt Scripts.txt' % sys.argv[0]) +print (' *') +print (' * on files with these headers:') +print (' *') +for line in constraints_header: + print (' * %s' % line.strip ()) +print (' *') +for line in scripts_header: + print (' * %s' % line.strip ()) +print (' */') + +print () +print ('#include "hb.hh"') +print () +print ('#ifndef HB_NO_OT_SHAPE') +print () +print ('#include "hb-ot-shaper-vowel-constraints.hh"') +print () +print ('static void') +print ('_output_dotted_circle (hb_buffer_t *buffer)') +print ('{') +print (' (void) buffer->output_glyph (0x25CCu);') +print (' _hb_glyph_info_reset_continuation (&buffer->prev());') +print ('}') +print () +print ('static void') +print ('_output_with_dotted_circle (hb_buffer_t *buffer)') +print ('{') +print (' _output_dotted_circle (buffer);') +print (' (void) buffer->next_glyph ();') +print ('}') +print () + +print ('void') +print ('_hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan HB_UNUSED,') +print ('\t\t\t\t hb_buffer_t *buffer,') +print ('\t\t\t\t hb_font_t *font HB_UNUSED)') +print ('{') +print ('#ifdef HB_NO_OT_SHAPER_VOWEL_CONSTRAINTS') +print (' return;') +print ('#endif') +print (' if (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE)') +print (' return;') +print () +print (' /* UGLY UGLY UGLY business of adding dotted-circle in the middle of') +print (' * vowel-sequences that look like another vowel. Data for each script') +print (' * collected from the USE script development spec.') +print (' *') +print (' * https://github.com/harfbuzz/harfbuzz/issues/1019') +print (' */') +print (' buffer->clear_output ();') +print (' unsigned int count = buffer->len;') +print (' switch ((unsigned) buffer->props.script)') +print (' {') + +for script, constraints in sorted (constraints.items (), key=lambda s_c: script_order[s_c[0]]): + print (' case HB_SCRIPT_{}:'.format (script.upper ())) + print (' for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)') + print (' {') + print ('\tbool matched = false;') + write (str (constraints)) + print ('\t(void) buffer->next_glyph ();') + print ('\tif (matched) _output_with_dotted_circle (buffer);') + print (' }') + print (' break;') + print () + +print (' default:') +print (' break;') +print (' }') +print (' buffer->sync ();') +print ('}') + +print () +print () +print ('#endif') +print ('/* == End of generated functions == */') diff --git a/gfx/harfbuzz/src/graph/classdef-graph.hh b/gfx/harfbuzz/src/graph/classdef-graph.hh new file mode 100644 index 0000000000..c2e24a7067 --- /dev/null +++ b/gfx/harfbuzz/src/graph/classdef-graph.hh @@ -0,0 +1,216 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "graph.hh" +#include "../hb-ot-layout-common.hh" + +#ifndef GRAPH_CLASSDEF_GRAPH_HH +#define GRAPH_CLASSDEF_GRAPH_HH + +namespace graph { + +struct ClassDefFormat1 : public OT::ClassDefFormat1_3 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + constexpr unsigned min_size = OT::ClassDefFormat1_3::min_size; + if (vertex_len < min_size) return false; + return vertex_len >= min_size + classValue.get_size () - classValue.len.get_size (); + } +}; + +struct ClassDefFormat2 : public OT::ClassDefFormat2_4 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + constexpr unsigned min_size = OT::ClassDefFormat2_4::min_size; + if (vertex_len < min_size) return false; + return vertex_len >= min_size + rangeRecord.get_size () - rangeRecord.len.get_size (); + } +}; + +struct ClassDef : public OT::ClassDef +{ + template + static bool add_class_def (gsubgpos_graph_context_t& c, + unsigned parent_id, + unsigned link_position, + It glyph_and_class, + unsigned max_size) + { + unsigned class_def_prime_id = c.graph.new_node (nullptr, nullptr); + auto& class_def_prime_vertex = c.graph.vertices_[class_def_prime_id]; + if (!make_class_def (c, glyph_and_class, class_def_prime_id, max_size)) + return false; + + auto* class_def_link = c.graph.vertices_[parent_id].obj.real_links.push (); + class_def_link->width = SmallTypes::size; + class_def_link->objidx = class_def_prime_id; + class_def_link->position = link_position; + class_def_prime_vertex.parents.push (parent_id); + + return true; + } + + template + static bool make_class_def (gsubgpos_graph_context_t& c, + It glyph_and_class, + unsigned dest_obj, + unsigned max_size) + { + char* buffer = (char*) hb_calloc (1, max_size); + hb_serialize_context_t serializer (buffer, max_size); + OT::ClassDef_serialize (&serializer, glyph_and_class); + serializer.end_serialize (); + if (serializer.in_error ()) + { + hb_free (buffer); + return false; + } + + hb_bytes_t class_def_copy = serializer.copy_bytes (); + c.add_buffer ((char *) class_def_copy.arrayZ); // Give ownership to the context, it will cleanup the buffer. + + auto& obj = c.graph.vertices_[dest_obj].obj; + obj.head = (char *) class_def_copy.arrayZ; + obj.tail = obj.head + class_def_copy.length; + + hb_free (buffer); + return true; + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < OT::ClassDef::min_size) return false; + switch (u.format) + { + case 1: return ((ClassDefFormat1*)this)->sanitize (vertex); + case 2: return ((ClassDefFormat2*)this)->sanitize (vertex); +#ifndef HB_NO_BEYOND_64K + // Not currently supported + case 3: + case 4: +#endif + default: return false; + } + } +}; + + +struct class_def_size_estimator_t +{ + template + class_def_size_estimator_t (It glyph_and_class) + : gids_consecutive (true), num_ranges_per_class (), glyphs_per_class () + { + unsigned last_gid = (unsigned) -1; + for (auto p : + glyph_and_class) + { + unsigned gid = p.first; + unsigned klass = p.second; + + if (last_gid != (unsigned) -1 && gid != last_gid + 1) + gids_consecutive = false; + last_gid = gid; + + hb_set_t* glyphs; + if (glyphs_per_class.has (klass, &glyphs) && glyphs) { + glyphs->add (gid); + continue; + } + + hb_set_t new_glyphs; + new_glyphs.add (gid); + glyphs_per_class.set (klass, std::move (new_glyphs)); + } + + if (in_error ()) return; + + for (unsigned klass : glyphs_per_class.keys ()) + { + if (!klass) continue; // class 0 doesn't get encoded. + + const hb_set_t& glyphs = glyphs_per_class.get (klass); + hb_codepoint_t start = HB_SET_VALUE_INVALID; + hb_codepoint_t end = HB_SET_VALUE_INVALID; + + unsigned count = 0; + while (glyphs.next_range (&start, &end)) + count++; + + num_ranges_per_class.set (klass, count); + } + } + + // Incremental increase in the Coverage and ClassDef table size + // (worst case) if all glyphs associated with 'klass' were added. + unsigned incremental_coverage_size (unsigned klass) const + { + // Coverage takes 2 bytes per glyph worst case, + return 2 * glyphs_per_class.get (klass).get_population (); + } + + // Incremental increase in the Coverage and ClassDef table size + // (worst case) if all glyphs associated with 'klass' were added. + unsigned incremental_class_def_size (unsigned klass) const + { + // ClassDef takes 6 bytes per range + unsigned class_def_2_size = 6 * num_ranges_per_class.get (klass); + if (gids_consecutive) + { + // ClassDef1 takes 2 bytes per glyph, but only can be used + // when gids are consecutive. + return hb_min (2 * glyphs_per_class.get (klass).get_population (), class_def_2_size); + } + + return class_def_2_size; + } + + bool in_error () + { + if (num_ranges_per_class.in_error ()) return true; + if (glyphs_per_class.in_error ()) return true; + + for (const hb_set_t& s : glyphs_per_class.values ()) + { + if (s.in_error ()) return true; + } + return false; + } + + private: + bool gids_consecutive; + hb_hashmap_t num_ranges_per_class; + hb_hashmap_t glyphs_per_class; +}; + + +} + +#endif // GRAPH_CLASSDEF_GRAPH_HH diff --git a/gfx/harfbuzz/src/graph/coverage-graph.hh b/gfx/harfbuzz/src/graph/coverage-graph.hh new file mode 100644 index 0000000000..49d0936315 --- /dev/null +++ b/gfx/harfbuzz/src/graph/coverage-graph.hh @@ -0,0 +1,152 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "graph.hh" +#include "../OT/Layout/Common/Coverage.hh" + +#ifndef GRAPH_COVERAGE_GRAPH_HH +#define GRAPH_COVERAGE_GRAPH_HH + +namespace graph { + +struct CoverageFormat1 : public OT::Layout::Common::CoverageFormat1_3 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + constexpr unsigned min_size = OT::Layout::Common::CoverageFormat1_3::min_size; + if (vertex_len < min_size) return false; + return vertex_len >= min_size + glyphArray.get_size () - glyphArray.len.get_size (); + } +}; + +struct CoverageFormat2 : public OT::Layout::Common::CoverageFormat2_4 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + constexpr unsigned min_size = OT::Layout::Common::CoverageFormat2_4::min_size; + if (vertex_len < min_size) return false; + return vertex_len >= min_size + rangeRecord.get_size () - rangeRecord.len.get_size (); + } +}; + +struct Coverage : public OT::Layout::Common::Coverage +{ + static Coverage* clone_coverage (gsubgpos_graph_context_t& c, + unsigned coverage_id, + unsigned new_parent_id, + unsigned link_position, + unsigned start, unsigned end) + + { + unsigned coverage_size = c.graph.vertices_[coverage_id].table_size (); + auto& coverage_v = c.graph.vertices_[coverage_id]; + Coverage* coverage_table = (Coverage*) coverage_v.obj.head; + if (!coverage_table || !coverage_table->sanitize (coverage_v)) + return nullptr; + + auto new_coverage = + + hb_zip (coverage_table->iter (), hb_range ()) + | hb_filter ([&] (hb_pair_t p) { + return p.second >= start && p.second < end; + }) + | hb_map_retains_sorting (hb_first) + ; + + return add_coverage (c, new_parent_id, link_position, new_coverage, coverage_size); + } + + template + static Coverage* add_coverage (gsubgpos_graph_context_t& c, + unsigned parent_id, + unsigned link_position, + It glyphs, + unsigned max_size) + { + unsigned coverage_prime_id = c.graph.new_node (nullptr, nullptr); + auto& coverage_prime_vertex = c.graph.vertices_[coverage_prime_id]; + if (!make_coverage (c, glyphs, coverage_prime_id, max_size)) + return nullptr; + + auto* coverage_link = c.graph.vertices_[parent_id].obj.real_links.push (); + coverage_link->width = SmallTypes::size; + coverage_link->objidx = coverage_prime_id; + coverage_link->position = link_position; + coverage_prime_vertex.parents.push (parent_id); + + return (Coverage*) coverage_prime_vertex.obj.head; + } + + template + static bool make_coverage (gsubgpos_graph_context_t& c, + It glyphs, + unsigned dest_obj, + unsigned max_size) + { + char* buffer = (char*) hb_calloc (1, max_size); + hb_serialize_context_t serializer (buffer, max_size); + OT::Layout::Common::Coverage_serialize (&serializer, glyphs); + serializer.end_serialize (); + if (serializer.in_error ()) + { + hb_free (buffer); + return false; + } + + hb_bytes_t coverage_copy = serializer.copy_bytes (); + c.add_buffer ((char *) coverage_copy.arrayZ); // Give ownership to the context, it will cleanup the buffer. + + auto& obj = c.graph.vertices_[dest_obj].obj; + obj.head = (char *) coverage_copy.arrayZ; + obj.tail = obj.head + coverage_copy.length; + + hb_free (buffer); + return true; + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < OT::Layout::Common::Coverage::min_size) return false; + switch (u.format) + { + case 1: return ((CoverageFormat1*)this)->sanitize (vertex); + case 2: return ((CoverageFormat2*)this)->sanitize (vertex); +#ifndef HB_NO_BEYOND_64K + // Not currently supported + case 3: + case 4: +#endif + default: return false; + } + } +}; + + +} + +#endif // GRAPH_COVERAGE_GRAPH_HH diff --git a/gfx/harfbuzz/src/graph/graph.hh b/gfx/harfbuzz/src/graph/graph.hh new file mode 100644 index 0000000000..294a999918 --- /dev/null +++ b/gfx/harfbuzz/src/graph/graph.hh @@ -0,0 +1,1402 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "../hb-set.hh" +#include "../hb-priority-queue.hh" +#include "../hb-serialize.hh" + +#ifndef GRAPH_GRAPH_HH +#define GRAPH_GRAPH_HH + +namespace graph { + +/** + * Represents a serialized table in the form of a graph. + * Provides methods for modifying and reordering the graph. + */ +struct graph_t +{ + struct vertex_t + { + hb_serialize_context_t::object_t obj; + int64_t distance = 0 ; + int64_t space = 0 ; + hb_vector_t parents; + unsigned start = 0; + unsigned end = 0; + unsigned priority = 0; + + + bool link_positions_valid (unsigned num_objects, bool removed_nil) + { + hb_set_t assigned_bytes; + for (const auto& l : obj.real_links) + { + if (l.objidx >= num_objects + || (removed_nil && !l.objidx)) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + "Invalid graph. Invalid object index."); + return false; + } + + unsigned start = l.position; + unsigned end = start + l.width - 1; + + if (unlikely (l.width < 2 || l.width > 4)) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + "Invalid graph. Invalid link width."); + return false; + } + + if (unlikely (end >= table_size ())) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + "Invalid graph. Link position is out of bounds."); + return false; + } + + if (unlikely (assigned_bytes.intersects (start, end))) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + "Invalid graph. Found offsets whose positions overlap."); + return false; + } + + assigned_bytes.add_range (start, end); + } + + return !assigned_bytes.in_error (); + } + + void normalize () + { + obj.real_links.qsort (); + for (auto& l : obj.real_links) + { + for (unsigned i = 0; i < l.width; i++) + { + obj.head[l.position + i] = 0; + } + } + } + + bool equals (const vertex_t& other, + const graph_t& graph, + const graph_t& other_graph, + unsigned depth) const + { + if (!(as_bytes () == other.as_bytes ())) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + "vertex [%lu] bytes != [%lu] bytes, depth = %u", + (unsigned long) table_size (), + (unsigned long) other.table_size (), + depth); + + auto a = as_bytes (); + auto b = other.as_bytes (); + while (a || b) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " 0x%x %s 0x%x", (unsigned) *a, (*a == *b) ? "==" : "!=", (unsigned) *b); + a++; + b++; + } + return false; + } + + return links_equal (obj.real_links, other.obj.real_links, graph, other_graph, depth); + } + + hb_bytes_t as_bytes () const + { + return hb_bytes_t (obj.head, table_size ()); + } + + friend void swap (vertex_t& a, vertex_t& b) + { + hb_swap (a.obj, b.obj); + hb_swap (a.distance, b.distance); + hb_swap (a.space, b.space); + hb_swap (a.parents, b.parents); + hb_swap (a.start, b.start); + hb_swap (a.end, b.end); + hb_swap (a.priority, b.priority); + } + + hb_hashmap_t + position_to_index_map () const + { + hb_hashmap_t result; + + for (const auto& l : obj.real_links) { + result.set (l.position, l.objidx); + } + + return result; + } + + bool is_shared () const + { + return parents.length > 1; + } + + unsigned incoming_edges () const + { + return parents.length; + } + + void remove_parent (unsigned parent_index) + { + unsigned count = parents.length; + for (unsigned i = 0; i < count; i++) + { + if (parents.arrayZ[i] != parent_index) continue; + parents.remove_unordered (i); + break; + } + } + + void remove_real_link (unsigned child_index, const void* offset) + { + unsigned count = obj.real_links.length; + for (unsigned i = 0; i < count; i++) + { + auto& link = obj.real_links.arrayZ[i]; + if (link.objidx != child_index) + continue; + + if ((obj.head + link.position) != offset) + continue; + + obj.real_links.remove_unordered (i); + return; + } + } + + void remap_parents (const hb_vector_t& id_map) + { + unsigned count = parents.length; + for (unsigned i = 0; i < count; i++) + parents.arrayZ[i] = id_map[parents.arrayZ[i]]; + } + + void remap_parent (unsigned old_index, unsigned new_index) + { + unsigned count = parents.length; + for (unsigned i = 0; i < count; i++) + { + if (parents.arrayZ[i] == old_index) + parents.arrayZ[i] = new_index; + } + } + + bool is_leaf () const + { + return !obj.real_links.length && !obj.virtual_links.length; + } + + bool raise_priority () + { + if (has_max_priority ()) return false; + priority++; + return true; + } + + bool has_max_priority () const { + return priority >= 3; + } + + size_t table_size () const { + return obj.tail - obj.head; + } + + int64_t modified_distance (unsigned order) const + { + // TODO(garretrieger): once priority is high enough, should try + // setting distance = 0 which will force to sort immediately after + // it's parent where possible. + + int64_t modified_distance = + hb_min (hb_max(distance + distance_modifier (), 0), 0x7FFFFFFFFFF); + if (has_max_priority ()) { + modified_distance = 0; + } + return (modified_distance << 18) | (0x003FFFF & order); + } + + int64_t distance_modifier () const + { + if (!priority) return 0; + int64_t table_size = obj.tail - obj.head; + + if (priority == 1) + return -table_size / 2; + + return -table_size; + } + + private: + bool links_equal (const hb_vector_t& this_links, + const hb_vector_t& other_links, + const graph_t& graph, + const graph_t& other_graph, + unsigned depth) const + { + auto a = this_links.iter (); + auto b = other_links.iter (); + + while (a && b) + { + const auto& link_a = *a; + const auto& link_b = *b; + + if (link_a.width != link_b.width || + link_a.is_signed != link_b.is_signed || + link_a.whence != link_b.whence || + link_a.position != link_b.position || + link_a.bias != link_b.bias) + return false; + + if (!graph.vertices_[link_a.objidx].equals ( + other_graph.vertices_[link_b.objidx], graph, other_graph, depth + 1)) + return false; + + a++; + b++; + } + + if (bool (a) != bool (b)) + return false; + + return true; + } + }; + + template + struct vertex_and_table_t + { + vertex_and_table_t () : index (0), vertex (nullptr), table (nullptr) + {} + + unsigned index; + vertex_t* vertex; + T* table; + + operator bool () { + return table && vertex; + } + }; + + /* + * A topological sorting of an object graph. Ordered + * in reverse serialization order (first object in the + * serialization is at the end of the list). This matches + * the 'packed' object stack used internally in the + * serializer + */ + template + graph_t (const T& objects) + : parents_invalid (true), + distance_invalid (true), + positions_invalid (true), + successful (true), + buffers () + { + num_roots_for_space_.push (1); + bool removed_nil = false; + vertices_.alloc (objects.length); + vertices_scratch_.alloc (objects.length); + unsigned count = objects.length; + for (unsigned i = 0; i < count; i++) + { + // If this graph came from a serialization buffer object 0 is the + // nil object. We don't need it for our purposes here so drop it. + if (i == 0 && !objects.arrayZ[i]) + { + removed_nil = true; + continue; + } + + vertex_t* v = vertices_.push (); + if (check_success (!vertices_.in_error ())) + v->obj = *objects.arrayZ[i]; + + check_success (v->link_positions_valid (count, removed_nil)); + + if (!removed_nil) continue; + // Fix indices to account for removed nil object. + for (auto& l : v->obj.all_links_writer ()) { + l.objidx--; + } + } + } + + ~graph_t () + { + vertices_.fini (); + for (char* b : buffers) + hb_free (b); + } + + bool operator== (const graph_t& other) const + { + return root ().equals (other.root (), *this, other, 0); + } + + // Sorts links of all objects in a consistent manner and zeroes all offsets. + void normalize () + { + for (auto& v : vertices_.writer ()) + v.normalize (); + } + + bool in_error () const + { + return !successful || + vertices_.in_error () || + num_roots_for_space_.in_error (); + } + + const vertex_t& root () const + { + return vertices_[root_idx ()]; + } + + unsigned root_idx () const + { + // Object graphs are in reverse order, the first object is at the end + // of the vector. Since the graph is topologically sorted it's safe to + // assume the first object has no incoming edges. + return vertices_.length - 1; + } + + const hb_serialize_context_t::object_t& object (unsigned i) const + { + return vertices_[i].obj; + } + + void add_buffer (char* buffer) + { + buffers.push (buffer); + } + + /* + * Adds a 16 bit link from parent_id to child_id + */ + template + void add_link (T* offset, + unsigned parent_id, + unsigned child_id) + { + auto& v = vertices_[parent_id]; + auto* link = v.obj.real_links.push (); + link->width = 2; + link->objidx = child_id; + link->position = (char*) offset - (char*) v.obj.head; + vertices_[child_id].parents.push (parent_id); + } + + /* + * Generates a new topological sorting of graph ordered by the shortest + * distance to each node if positions are marked as invalid. + */ + void sort_shortest_distance_if_needed () + { + if (!positions_invalid) return; + sort_shortest_distance (); + } + + + /* + * Generates a new topological sorting of graph ordered by the shortest + * distance to each node. + */ + void sort_shortest_distance () + { + positions_invalid = true; + + if (vertices_.length <= 1) { + // Graph of 1 or less doesn't need sorting. + return; + } + + update_distances (); + + hb_priority_queue_t queue; + hb_vector_t &sorted_graph = vertices_scratch_; + if (unlikely (!check_success (sorted_graph.resize (vertices_.length)))) return; + hb_vector_t id_map; + if (unlikely (!check_success (id_map.resize (vertices_.length)))) return; + + hb_vector_t removed_edges; + if (unlikely (!check_success (removed_edges.resize (vertices_.length)))) return; + update_parents (); + + queue.insert (root ().modified_distance (0), root_idx ()); + int new_id = root_idx (); + unsigned order = 1; + while (!queue.in_error () && !queue.is_empty ()) + { + unsigned next_id = queue.pop_minimum().second; + + hb_swap (sorted_graph[new_id], vertices_[next_id]); + const vertex_t& next = sorted_graph[new_id]; + + if (unlikely (!check_success(new_id >= 0))) { + // We are out of ids. Which means we've visited a node more than once. + // This graph contains a cycle which is not allowed. + DEBUG_MSG (SUBSET_REPACK, nullptr, "Invalid graph. Contains cycle."); + return; + } + + id_map[next_id] = new_id--; + + for (const auto& link : next.obj.all_links ()) { + removed_edges[link.objidx]++; + if (!(vertices_[link.objidx].incoming_edges () - removed_edges[link.objidx])) + // Add the order that the links were encountered to the priority. + // This ensures that ties between priorities objects are broken in a consistent + // way. More specifically this is set up so that if a set of objects have the same + // distance they'll be added to the topological order in the order that they are + // referenced from the parent object. + queue.insert (vertices_[link.objidx].modified_distance (order++), + link.objidx); + } + } + + check_success (!queue.in_error ()); + check_success (!sorted_graph.in_error ()); + + remap_all_obj_indices (id_map, &sorted_graph); + hb_swap (vertices_, sorted_graph); + + if (!check_success (new_id == -1)) + print_orphaned_nodes (); + } + + /* + * Finds the set of nodes (placed into roots) that should be assigned unique spaces. + * More specifically this looks for the top most 24 bit or 32 bit links in the graph. + * Some special casing is done that is specific to the layout of GSUB/GPOS tables. + */ + void find_space_roots (hb_set_t& visited, hb_set_t& roots) + { + int root_index = (int) root_idx (); + for (int i = root_index; i >= 0; i--) + { + if (visited.has (i)) continue; + + // Only real links can form 32 bit spaces + for (auto& l : vertices_[i].obj.real_links) + { + if (l.is_signed || l.width < 3) + continue; + + if (i == root_index && l.width == 3) + // Ignore 24bit links from the root node, this skips past the single 24bit + // pointer to the lookup list. + continue; + + if (l.width == 3) + { + // A 24bit offset forms a root, unless there is 32bit offsets somewhere + // in it's subgraph, then those become the roots instead. This is to make sure + // that extension subtables beneath a 24bit lookup become the spaces instead + // of the offset to the lookup. + hb_set_t sub_roots; + find_32bit_roots (l.objidx, sub_roots); + if (sub_roots) { + for (unsigned sub_root_idx : sub_roots) { + roots.add (sub_root_idx); + find_subgraph (sub_root_idx, visited); + } + continue; + } + } + + roots.add (l.objidx); + find_subgraph (l.objidx, visited); + } + } + } + + template + vertex_and_table_t as_table (unsigned parent, const void* offset, Ts... ds) + { + return as_table_from_index (index_for_offset (parent, offset), std::forward(ds)...); + } + + template + vertex_and_table_t as_mutable_table (unsigned parent, const void* offset, Ts... ds) + { + return as_table_from_index (mutable_index_for_offset (parent, offset), std::forward(ds)...); + } + + template + vertex_and_table_t as_table_from_index (unsigned index, Ts... ds) + { + if (index >= vertices_.length) + return vertex_and_table_t (); + + vertex_and_table_t r; + r.vertex = &vertices_[index]; + r.table = (T*) r.vertex->obj.head; + r.index = index; + if (!r.table) + return vertex_and_table_t (); + + if (!r.table->sanitize (*(r.vertex), std::forward(ds)...)) + return vertex_and_table_t (); + + return r; + } + + // Finds the object id of the object pointed to by the offset at 'offset' + // within object[node_idx]. + unsigned index_for_offset (unsigned node_idx, const void* offset) const + { + const auto& node = object (node_idx); + if (offset < node.head || offset >= node.tail) return -1; + + unsigned count = node.real_links.length; + for (unsigned i = 0; i < count; i++) + { + // Use direct access for increased performance, this is a hot method. + const auto& link = node.real_links.arrayZ[i]; + if (offset != node.head + link.position) + continue; + return link.objidx; + } + + return -1; + } + + // Finds the object id of the object pointed to by the offset at 'offset' + // within object[node_idx]. Ensures that the returned object is safe to mutate. + // That is, if the original child object is shared by parents other than node_idx + // it will be duplicated and the duplicate will be returned instead. + unsigned mutable_index_for_offset (unsigned node_idx, const void* offset) + { + unsigned child_idx = index_for_offset (node_idx, offset); + auto& child = vertices_[child_idx]; + for (unsigned p : child.parents) + { + if (p != node_idx) { + return duplicate (node_idx, child_idx); + } + } + + return child_idx; + } + + + /* + * Assign unique space numbers to each connected subgraph of 24 bit and/or 32 bit offset(s). + * Currently, this is implemented specifically tailored to the structure of a GPOS/GSUB + * (including with 24bit offsets) table. + */ + bool assign_spaces () + { + update_parents (); + + hb_set_t visited; + hb_set_t roots; + find_space_roots (visited, roots); + + // Mark everything not in the subgraphs of the roots as visited. This prevents + // subgraphs from being connected via nodes not in those subgraphs. + visited.invert (); + + if (!roots) return false; + + while (roots) + { + uint32_t next = HB_SET_VALUE_INVALID; + if (unlikely (!check_success (!roots.in_error ()))) break; + if (!roots.next (&next)) break; + + hb_set_t connected_roots; + find_connected_nodes (next, roots, visited, connected_roots); + if (unlikely (!check_success (!connected_roots.in_error ()))) break; + + isolate_subgraph (connected_roots); + if (unlikely (!check_success (!connected_roots.in_error ()))) break; + + unsigned next_space = this->next_space (); + num_roots_for_space_.push (0); + for (unsigned root : connected_roots) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, "Subgraph %u gets space %u", root, next_space); + vertices_[root].space = next_space; + num_roots_for_space_[next_space] = num_roots_for_space_[next_space] + 1; + distance_invalid = true; + positions_invalid = true; + } + + // TODO(grieger): special case for GSUB/GPOS use extension promotions to move 16 bit space + // into the 32 bit space as needed, instead of using isolation. + } + + + + return true; + } + + /* + * Isolates the subgraph of nodes reachable from root. Any links to nodes in the subgraph + * that originate from outside of the subgraph will be removed by duplicating the linked to + * object. + * + * Indices stored in roots will be updated if any of the roots are duplicated to new indices. + */ + bool isolate_subgraph (hb_set_t& roots) + { + update_parents (); + hb_map_t subgraph; + + // incoming edges to root_idx should be all 32 bit in length so we don't need to de-dup these + // set the subgraph incoming edge count to match all of root_idx's incoming edges + hb_set_t parents; + for (unsigned root_idx : roots) + { + subgraph.set (root_idx, wide_parents (root_idx, parents)); + find_subgraph (root_idx, subgraph); + } + + unsigned original_root_idx = root_idx (); + hb_map_t index_map; + bool made_changes = false; + for (auto entry : subgraph.iter ()) + { + const auto& node = vertices_[entry.first]; + unsigned subgraph_incoming_edges = entry.second; + + if (subgraph_incoming_edges < node.incoming_edges ()) + { + // Only de-dup objects with incoming links from outside the subgraph. + made_changes = true; + duplicate_subgraph (entry.first, index_map); + } + } + + if (in_error ()) + return false; + + if (!made_changes) + return false; + + if (original_root_idx != root_idx () + && parents.has (original_root_idx)) + { + // If the root idx has changed since parents was determined, update root idx in parents + parents.add (root_idx ()); + parents.del (original_root_idx); + } + + auto new_subgraph = + + subgraph.keys () + | hb_map([&] (uint32_t node_idx) { + const uint32_t *v; + if (index_map.has (node_idx, &v)) return *v; + return node_idx; + }) + ; + + remap_obj_indices (index_map, new_subgraph); + remap_obj_indices (index_map, parents.iter (), true); + + // Update roots set with new indices as needed. + uint32_t next = HB_SET_VALUE_INVALID; + while (roots.next (&next)) + { + const uint32_t *v; + if (index_map.has (next, &v)) + { + roots.del (next); + roots.add (*v); + } + } + + return true; + } + + void find_subgraph (unsigned node_idx, hb_map_t& subgraph) + { + for (const auto& link : vertices_[node_idx].obj.all_links ()) + { + const uint32_t *v; + if (subgraph.has (link.objidx, &v)) + { + subgraph.set (link.objidx, *v + 1); + continue; + } + subgraph.set (link.objidx, 1); + find_subgraph (link.objidx, subgraph); + } + } + + void find_subgraph (unsigned node_idx, hb_set_t& subgraph) + { + if (subgraph.has (node_idx)) return; + subgraph.add (node_idx); + for (const auto& link : vertices_[node_idx].obj.all_links ()) + find_subgraph (link.objidx, subgraph); + } + + size_t find_subgraph_size (unsigned node_idx, hb_set_t& subgraph, unsigned max_depth = -1) + { + if (subgraph.has (node_idx)) return 0; + subgraph.add (node_idx); + + const auto& o = vertices_[node_idx].obj; + size_t size = o.tail - o.head; + if (max_depth == 0) + return size; + + for (const auto& link : o.all_links ()) + size += find_subgraph_size (link.objidx, subgraph, max_depth - 1); + return size; + } + + /* + * Finds the topmost children of 32bit offsets in the subgraph starting + * at node_idx. Found indices are placed into 'found'. + */ + void find_32bit_roots (unsigned node_idx, hb_set_t& found) + { + for (const auto& link : vertices_[node_idx].obj.all_links ()) + { + if (!link.is_signed && link.width == 4) { + found.add (link.objidx); + continue; + } + find_32bit_roots (link.objidx, found); + } + } + + /* + * Moves the child of old_parent_idx pointed to by old_offset to a new + * vertex at the new_offset. + */ + template + void move_child (unsigned old_parent_idx, + const O* old_offset, + unsigned new_parent_idx, + const O* new_offset) + { + distance_invalid = true; + positions_invalid = true; + + auto& old_v = vertices_[old_parent_idx]; + auto& new_v = vertices_[new_parent_idx]; + + unsigned child_id = index_for_offset (old_parent_idx, + old_offset); + + auto* new_link = new_v.obj.real_links.push (); + new_link->width = O::static_size; + new_link->objidx = child_id; + new_link->position = (const char*) new_offset - (const char*) new_v.obj.head; + + auto& child = vertices_[child_id]; + child.parents.push (new_parent_idx); + + old_v.remove_real_link (child_id, old_offset); + child.remove_parent (old_parent_idx); + } + + /* + * duplicates all nodes in the subgraph reachable from node_idx. Does not re-assign + * links. index_map is updated with mappings from old id to new id. If a duplication has already + * been performed for a given index, then it will be skipped. + */ + void duplicate_subgraph (unsigned node_idx, hb_map_t& index_map) + { + if (index_map.has (node_idx)) + return; + + unsigned clone_idx = duplicate (node_idx); + if (!check_success (clone_idx != (unsigned) -1)) + return; + + index_map.set (node_idx, clone_idx); + for (const auto& l : object (node_idx).all_links ()) { + duplicate_subgraph (l.objidx, index_map); + } + } + + /* + * Creates a copy of node_idx and returns it's new index. + */ + unsigned duplicate (unsigned node_idx) + { + positions_invalid = true; + distance_invalid = true; + + auto* clone = vertices_.push (); + auto& child = vertices_[node_idx]; + if (vertices_.in_error ()) { + return -1; + } + + clone->obj.head = child.obj.head; + clone->obj.tail = child.obj.tail; + clone->distance = child.distance; + clone->space = child.space; + clone->parents.reset (); + + unsigned clone_idx = vertices_.length - 2; + for (const auto& l : child.obj.real_links) + { + clone->obj.real_links.push (l); + vertices_[l.objidx].parents.push (clone_idx); + } + for (const auto& l : child.obj.virtual_links) + { + clone->obj.virtual_links.push (l); + vertices_[l.objidx].parents.push (clone_idx); + } + + check_success (!clone->obj.real_links.in_error ()); + check_success (!clone->obj.virtual_links.in_error ()); + + // The last object is the root of the graph, so swap back the root to the end. + // The root's obj idx does change, however since it's root nothing else refers to it. + // all other obj idx's will be unaffected. + hb_swap (vertices_[vertices_.length - 2], *clone); + + // Since the root moved, update the parents arrays of all children on the root. + for (const auto& l : root ().obj.all_links ()) + vertices_[l.objidx].remap_parent (root_idx () - 1, root_idx ()); + + return clone_idx; + } + + /* + * Creates a copy of child and re-assigns the link from + * parent to the clone. The copy is a shallow copy, objects + * linked from child are not duplicated. + */ + unsigned duplicate_if_shared (unsigned parent_idx, unsigned child_idx) + { + unsigned new_idx = duplicate (parent_idx, child_idx); + if (new_idx == (unsigned) -1) return child_idx; + return new_idx; + } + + + /* + * Creates a copy of child and re-assigns the link from + * parent to the clone. The copy is a shallow copy, objects + * linked from child are not duplicated. + */ + unsigned duplicate (unsigned parent_idx, unsigned child_idx) + { + update_parents (); + + unsigned links_to_child = 0; + for (const auto& l : vertices_[parent_idx].obj.all_links ()) + { + if (l.objidx == child_idx) links_to_child++; + } + + if (vertices_[child_idx].incoming_edges () <= links_to_child) + { + // Can't duplicate this node, doing so would orphan the original one as all remaining links + // to child are from parent. + DEBUG_MSG (SUBSET_REPACK, nullptr, " Not duplicating %u => %u", + parent_idx, child_idx); + return -1; + } + + DEBUG_MSG (SUBSET_REPACK, nullptr, " Duplicating %u => %u", + parent_idx, child_idx); + + unsigned clone_idx = duplicate (child_idx); + if (clone_idx == (unsigned) -1) return false; + // duplicate shifts the root node idx, so if parent_idx was root update it. + if (parent_idx == clone_idx) parent_idx++; + + auto& parent = vertices_[parent_idx]; + for (auto& l : parent.obj.all_links_writer ()) + { + if (l.objidx != child_idx) + continue; + + reassign_link (l, parent_idx, clone_idx); + } + + return clone_idx; + } + + + /* + * Adds a new node to the graph, not connected to anything. + */ + unsigned new_node (char* head, char* tail) + { + positions_invalid = true; + distance_invalid = true; + + auto* clone = vertices_.push (); + if (vertices_.in_error ()) { + return -1; + } + + clone->obj.head = head; + clone->obj.tail = tail; + clone->distance = 0; + clone->space = 0; + + unsigned clone_idx = vertices_.length - 2; + + // The last object is the root of the graph, so swap back the root to the end. + // The root's obj idx does change, however since it's root nothing else refers to it. + // all other obj idx's will be unaffected. + hb_swap (vertices_[vertices_.length - 2], *clone); + + // Since the root moved, update the parents arrays of all children on the root. + for (const auto& l : root ().obj.all_links ()) + vertices_[l.objidx].remap_parent (root_idx () - 1, root_idx ()); + + return clone_idx; + } + + /* + * Raises the sorting priority of all children. + */ + bool raise_childrens_priority (unsigned parent_idx) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, " Raising priority of all children of %u", + parent_idx); + // This operation doesn't change ordering until a sort is run, so no need + // to invalidate positions. It does not change graph structure so no need + // to update distances or edge counts. + auto& parent = vertices_[parent_idx].obj; + bool made_change = false; + for (auto& l : parent.all_links_writer ()) + made_change |= vertices_[l.objidx].raise_priority (); + return made_change; + } + + bool is_fully_connected () + { + update_parents(); + + if (root().parents) + // Root cannot have parents. + return false; + + for (unsigned i = 0; i < root_idx (); i++) + { + if (!vertices_[i].parents) + return false; + } + return true; + } + +#if 0 + /* + * Saves the current graph to a packed binary format which the repacker fuzzer takes + * as a seed. + */ + void save_fuzzer_seed (hb_tag_t tag) const + { + FILE* f = fopen ("./repacker_fuzzer_seed", "w"); + fwrite ((void*) &tag, sizeof (tag), 1, f); + + uint16_t num_objects = vertices_.length; + fwrite ((void*) &num_objects, sizeof (num_objects), 1, f); + + for (const auto& v : vertices_) + { + uint16_t blob_size = v.table_size (); + fwrite ((void*) &blob_size, sizeof (blob_size), 1, f); + fwrite ((const void*) v.obj.head, blob_size, 1, f); + } + + uint16_t link_count = 0; + for (const auto& v : vertices_) + link_count += v.obj.real_links.length; + + fwrite ((void*) &link_count, sizeof (link_count), 1, f); + + typedef struct + { + uint16_t parent; + uint16_t child; + uint16_t position; + uint8_t width; + } link_t; + + for (unsigned i = 0; i < vertices_.length; i++) + { + for (const auto& l : vertices_[i].obj.real_links) + { + link_t link { + (uint16_t) i, (uint16_t) l.objidx, + (uint16_t) l.position, (uint8_t) l.width + }; + fwrite ((void*) &link, sizeof (link), 1, f); + } + } + + fclose (f); + } +#endif + + void print_orphaned_nodes () + { + if (!DEBUG_ENABLED(SUBSET_REPACK)) return; + + DEBUG_MSG (SUBSET_REPACK, nullptr, "Graph is not fully connected."); + parents_invalid = true; + update_parents(); + + if (root().parents) { + DEBUG_MSG (SUBSET_REPACK, nullptr, "Root node has incoming edges."); + } + + for (unsigned i = 0; i < root_idx (); i++) + { + const auto& v = vertices_[i]; + if (!v.parents) + DEBUG_MSG (SUBSET_REPACK, nullptr, "Node %u is orphaned.", i); + } + } + + unsigned num_roots_for_space (unsigned space) const + { + return num_roots_for_space_[space]; + } + + unsigned next_space () const + { + return num_roots_for_space_.length; + } + + void move_to_new_space (const hb_set_t& indices) + { + num_roots_for_space_.push (0); + unsigned new_space = num_roots_for_space_.length - 1; + + for (unsigned index : indices) { + auto& node = vertices_[index]; + num_roots_for_space_[node.space] = num_roots_for_space_[node.space] - 1; + num_roots_for_space_[new_space] = num_roots_for_space_[new_space] + 1; + node.space = new_space; + distance_invalid = true; + positions_invalid = true; + } + } + + unsigned space_for (unsigned index, unsigned* root = nullptr) const + { + const auto& node = vertices_[index]; + if (node.space) + { + if (root != nullptr) + *root = index; + return node.space; + } + + if (!node.parents) + { + if (root) + *root = index; + return 0; + } + + return space_for (node.parents[0], root); + } + + void err_other_error () { this->successful = false; } + + size_t total_size_in_bytes () const { + size_t total_size = 0; + unsigned count = vertices_.length; + for (unsigned i = 0; i < count; i++) { + size_t size = vertices_.arrayZ[i].obj.tail - vertices_.arrayZ[i].obj.head; + total_size += size; + } + return total_size; + } + + + private: + + /* + * Returns the numbers of incoming edges that are 24 or 32 bits wide. + */ + unsigned wide_parents (unsigned node_idx, hb_set_t& parents) const + { + unsigned count = 0; + hb_set_t visited; + for (unsigned p : vertices_[node_idx].parents) + { + if (visited.has (p)) continue; + visited.add (p); + + // Only real links can be wide + for (const auto& l : vertices_[p].obj.real_links) + { + if (l.objidx == node_idx + && (l.width == 3 || l.width == 4) + && !l.is_signed) + { + count++; + parents.add (p); + } + } + } + return count; + } + + bool check_success (bool success) + { return this->successful && (success || ((void) err_other_error (), false)); } + + public: + /* + * Creates a map from objid to # of incoming edges. + */ + void update_parents () + { + if (!parents_invalid) return; + + unsigned count = vertices_.length; + + for (unsigned i = 0; i < count; i++) + vertices_.arrayZ[i].parents.reset (); + + for (unsigned p = 0; p < count; p++) + { + for (auto& l : vertices_.arrayZ[p].obj.all_links ()) + { + vertices_[l.objidx].parents.push (p); + } + } + + for (unsigned i = 0; i < count; i++) + // parents arrays must be accurate or downstream operations like cycle detection + // and sorting won't work correctly. + check_success (!vertices_.arrayZ[i].parents.in_error ()); + + parents_invalid = false; + } + + /* + * compute the serialized start and end positions for each vertex. + */ + void update_positions () + { + if (!positions_invalid) return; + + unsigned current_pos = 0; + for (int i = root_idx (); i >= 0; i--) + { + auto& v = vertices_[i]; + v.start = current_pos; + current_pos += v.obj.tail - v.obj.head; + v.end = current_pos; + } + + positions_invalid = false; + } + + /* + * Finds the distance to each object in the graph + * from the initial node. + */ + void update_distances () + { + if (!distance_invalid) return; + + // Uses Dijkstra's algorithm to find all of the shortest distances. + // https://en.wikipedia.org/wiki/Dijkstra%27s_algorithm + // + // Implementation Note: + // Since our priority queue doesn't support fast priority decreases + // we instead just add new entries into the queue when a priority changes. + // Redundant ones are filtered out later on by the visited set. + // According to https://www3.cs.stonybrook.edu/~rezaul/papers/TR-07-54.pdf + // for practical performance this is faster then using a more advanced queue + // (such as a fibonacci queue) with a fast decrease priority. + unsigned count = vertices_.length; + for (unsigned i = 0; i < count; i++) + { + if (i == vertices_.length - 1) + vertices_.arrayZ[i].distance = 0; + else + vertices_.arrayZ[i].distance = hb_int_max (int64_t); + } + + hb_priority_queue_t queue; + queue.insert (0, vertices_.length - 1); + + hb_vector_t visited; + visited.resize (vertices_.length); + + while (!queue.in_error () && !queue.is_empty ()) + { + unsigned next_idx = queue.pop_minimum ().second; + if (visited[next_idx]) continue; + const auto& next = vertices_[next_idx]; + int64_t next_distance = vertices_[next_idx].distance; + visited[next_idx] = true; + + for (const auto& link : next.obj.all_links ()) + { + if (visited[link.objidx]) continue; + + const auto& child = vertices_[link.objidx].obj; + unsigned link_width = link.width ? link.width : 4; // treat virtual offsets as 32 bits wide + int64_t child_weight = (child.tail - child.head) + + ((int64_t) 1 << (link_width * 8)) * (vertices_[link.objidx].space + 1); + int64_t child_distance = next_distance + child_weight; + + if (child_distance < vertices_[link.objidx].distance) + { + vertices_[link.objidx].distance = child_distance; + queue.insert (child_distance, link.objidx); + } + } + } + + check_success (!queue.in_error ()); + if (!check_success (queue.is_empty ())) + { + print_orphaned_nodes (); + return; + } + + distance_invalid = false; + } + + private: + /* + * Updates a link in the graph to point to a different object. Corrects the + * parents vector on the previous and new child nodes. + */ + void reassign_link (hb_serialize_context_t::object_t::link_t& link, + unsigned parent_idx, + unsigned new_idx) + { + unsigned old_idx = link.objidx; + link.objidx = new_idx; + vertices_[old_idx].remove_parent (parent_idx); + vertices_[new_idx].parents.push (parent_idx); + } + + /* + * Updates all objidx's in all links using the provided mapping. Corrects incoming edge counts. + */ + template + void remap_obj_indices (const hb_map_t& id_map, + Iterator subgraph, + bool only_wide = false) + { + if (!id_map) return; + for (unsigned i : subgraph) + { + for (auto& link : vertices_[i].obj.all_links_writer ()) + { + const uint32_t *v; + if (!id_map.has (link.objidx, &v)) continue; + if (only_wide && !(link.width == 4 && !link.is_signed)) continue; + + reassign_link (link, i, *v); + } + } + } + + /* + * Updates all objidx's in all links using the provided mapping. + */ + void remap_all_obj_indices (const hb_vector_t& id_map, + hb_vector_t* sorted_graph) const + { + unsigned count = sorted_graph->length; + for (unsigned i = 0; i < count; i++) + { + (*sorted_graph)[i].remap_parents (id_map); + for (auto& link : sorted_graph->arrayZ[i].obj.all_links_writer ()) + { + link.objidx = id_map[link.objidx]; + } + } + } + + /* + * Finds all nodes in targets that are reachable from start_idx, nodes in visited will be skipped. + * For this search the graph is treated as being undirected. + * + * Connected targets will be added to connected and removed from targets. All visited nodes + * will be added to visited. + */ + void find_connected_nodes (unsigned start_idx, + hb_set_t& targets, + hb_set_t& visited, + hb_set_t& connected) + { + if (unlikely (!check_success (!visited.in_error ()))) return; + if (visited.has (start_idx)) return; + visited.add (start_idx); + + if (targets.has (start_idx)) + { + targets.del (start_idx); + connected.add (start_idx); + } + + const auto& v = vertices_[start_idx]; + + // Graph is treated as undirected so search children and parents of start_idx + for (const auto& l : v.obj.all_links ()) + find_connected_nodes (l.objidx, targets, visited, connected); + + for (unsigned p : v.parents) + find_connected_nodes (p, targets, visited, connected); + } + + public: + // TODO(garretrieger): make private, will need to move most of offset overflow code into graph. + hb_vector_t vertices_; + hb_vector_t vertices_scratch_; + private: + bool parents_invalid; + bool distance_invalid; + bool positions_invalid; + bool successful; + hb_vector_t num_roots_for_space_; + hb_vector_t buffers; +}; + +} + +#endif // GRAPH_GRAPH_HH diff --git a/gfx/harfbuzz/src/graph/gsubgpos-context.cc b/gfx/harfbuzz/src/graph/gsubgpos-context.cc new file mode 100644 index 0000000000..b2044426d4 --- /dev/null +++ b/gfx/harfbuzz/src/graph/gsubgpos-context.cc @@ -0,0 +1,70 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "gsubgpos-graph.hh" + +namespace graph { + +gsubgpos_graph_context_t::gsubgpos_graph_context_t (hb_tag_t table_tag_, + graph_t& graph_) + : table_tag (table_tag_), + graph (graph_), + lookup_list_index (0), + lookups () +{ + if (table_tag_ != HB_OT_TAG_GPOS + && table_tag_ != HB_OT_TAG_GSUB) + return; + + GSTAR* gstar = graph::GSTAR::graph_to_gstar (graph_); + if (gstar) { + gstar->find_lookups (graph, lookups); + lookup_list_index = gstar->get_lookup_list_index (graph_); + } +} + +unsigned gsubgpos_graph_context_t::create_node (unsigned size) +{ + char* buffer = (char*) hb_calloc (1, size); + if (!buffer) + return -1; + + add_buffer (buffer); + + return graph.new_node (buffer, buffer + size); +} + +unsigned gsubgpos_graph_context_t::num_non_ext_subtables () { + unsigned count = 0; + for (auto l : lookups.values ()) + { + if (l->is_extension (table_tag)) continue; + count += l->number_of_subtables (); + } + return count; +} + +} diff --git a/gfx/harfbuzz/src/graph/gsubgpos-context.hh b/gfx/harfbuzz/src/graph/gsubgpos-context.hh new file mode 100644 index 0000000000..9fe9662e64 --- /dev/null +++ b/gfx/harfbuzz/src/graph/gsubgpos-context.hh @@ -0,0 +1,61 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "graph.hh" +#include "../hb-ot-layout-gsubgpos.hh" + +#ifndef GRAPH_GSUBGPOS_CONTEXT_HH +#define GRAPH_GSUBGPOS_CONTEXT_HH + +namespace graph { + +struct Lookup; + +struct gsubgpos_graph_context_t +{ + hb_tag_t table_tag; + graph_t& graph; + unsigned lookup_list_index; + hb_hashmap_t lookups; + + + HB_INTERNAL gsubgpos_graph_context_t (hb_tag_t table_tag_, + graph_t& graph_); + + HB_INTERNAL unsigned create_node (unsigned size); + + void add_buffer (char* buffer) + { + graph.add_buffer (buffer); + } + + private: + HB_INTERNAL unsigned num_non_ext_subtables (); +}; + +} + +#endif // GRAPH_GSUBGPOS_CONTEXT diff --git a/gfx/harfbuzz/src/graph/gsubgpos-graph.hh b/gfx/harfbuzz/src/graph/gsubgpos-graph.hh new file mode 100644 index 0000000000..c170638409 --- /dev/null +++ b/gfx/harfbuzz/src/graph/gsubgpos-graph.hh @@ -0,0 +1,414 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "graph.hh" +#include "../hb-ot-layout-gsubgpos.hh" +#include "../OT/Layout/GSUB/ExtensionSubst.hh" +#include "gsubgpos-context.hh" +#include "pairpos-graph.hh" +#include "markbasepos-graph.hh" + +#ifndef GRAPH_GSUBGPOS_GRAPH_HH +#define GRAPH_GSUBGPOS_GRAPH_HH + +namespace graph { + +struct Lookup; + +template +struct ExtensionFormat1 : public OT::ExtensionFormat1 +{ + void reset(unsigned type) + { + this->format = 1; + this->extensionLookupType = type; + this->extensionOffset = 0; + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + return vertex_len >= OT::ExtensionFormat1::static_size; + } + + unsigned get_lookup_type () const + { + return this->extensionLookupType; + } + + unsigned get_subtable_index (graph_t& graph, unsigned this_index) const + { + return graph.index_for_offset (this_index, &this->extensionOffset); + } +}; + +struct Lookup : public OT::Lookup +{ + unsigned number_of_subtables () const + { + return subTable.len; + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < OT::Lookup::min_size) return false; + return vertex_len >= this->get_size (); + } + + bool is_extension (hb_tag_t table_tag) const + { + return lookupType == extension_type (table_tag); + } + + bool make_extension (gsubgpos_graph_context_t& c, + unsigned this_index) + { + unsigned type = lookupType; + unsigned ext_type = extension_type (c.table_tag); + if (!ext_type || is_extension (c.table_tag)) + { + // NOOP + return true; + } + + DEBUG_MSG (SUBSET_REPACK, nullptr, + "Promoting lookup type %u (obj %u) to extension.", + type, + this_index); + + for (unsigned i = 0; i < subTable.len; i++) + { + unsigned subtable_index = c.graph.index_for_offset (this_index, &subTable[i]); + if (!make_subtable_extension (c, + this_index, + subtable_index)) + return false; + } + + lookupType = ext_type; + return true; + } + + bool split_subtables_if_needed (gsubgpos_graph_context_t& c, + unsigned this_index) + { + unsigned type = lookupType; + bool is_ext = is_extension (c.table_tag); + + if (c.table_tag != HB_OT_TAG_GPOS) + return true; + + if (!is_ext && + type != OT::Layout::GPOS_impl::PosLookupSubTable::Type::Pair && + type != OT::Layout::GPOS_impl::PosLookupSubTable::Type::MarkBase) + return true; + + hb_vector_t>> all_new_subtables; + for (unsigned i = 0; i < subTable.len; i++) + { + unsigned subtable_index = c.graph.index_for_offset (this_index, &subTable[i]); + unsigned parent_index = this_index; + if (is_ext) { + unsigned ext_subtable_index = subtable_index; + parent_index = ext_subtable_index; + ExtensionFormat1* extension = + (ExtensionFormat1*) + c.graph.object (ext_subtable_index).head; + if (!extension || !extension->sanitize (c.graph.vertices_[ext_subtable_index])) + continue; + + subtable_index = extension->get_subtable_index (c.graph, ext_subtable_index); + type = extension->get_lookup_type (); + if (type != OT::Layout::GPOS_impl::PosLookupSubTable::Type::Pair + && type != OT::Layout::GPOS_impl::PosLookupSubTable::Type::MarkBase) + continue; + } + + hb_vector_t new_sub_tables; + switch (type) + { + case 2: + new_sub_tables = split_subtable (c, parent_index, subtable_index); break; + case 4: + new_sub_tables = split_subtable (c, parent_index, subtable_index); break; + default: + break; + } + if (new_sub_tables.in_error ()) return false; + if (!new_sub_tables) continue; + hb_pair_t>* entry = all_new_subtables.push (); + entry->first = i; + entry->second = std::move (new_sub_tables); + } + + if (all_new_subtables) { + add_sub_tables (c, this_index, type, all_new_subtables); + } + + return true; + } + + template + hb_vector_t split_subtable (gsubgpos_graph_context_t& c, + unsigned parent_idx, + unsigned objidx) + { + T* sub_table = (T*) c.graph.object (objidx).head; + if (!sub_table || !sub_table->sanitize (c.graph.vertices_[objidx])) + return hb_vector_t (); + + return sub_table->split_subtables (c, parent_idx, objidx); + } + + void add_sub_tables (gsubgpos_graph_context_t& c, + unsigned this_index, + unsigned type, + hb_vector_t>>& subtable_ids) + { + bool is_ext = is_extension (c.table_tag); + auto& v = c.graph.vertices_[this_index]; + fix_existing_subtable_links (c, this_index, subtable_ids); + + unsigned new_subtable_count = 0; + for (const auto& p : subtable_ids) + new_subtable_count += p.second.length; + + size_t new_size = v.table_size () + + new_subtable_count * OT::Offset16::static_size; + char* buffer = (char*) hb_calloc (1, new_size); + c.add_buffer (buffer); + hb_memcpy (buffer, v.obj.head, v.table_size()); + + v.obj.head = buffer; + v.obj.tail = buffer + new_size; + + Lookup* new_lookup = (Lookup*) buffer; + + unsigned shift = 0; + new_lookup->subTable.len = subTable.len + new_subtable_count; + for (const auto& p : subtable_ids) + { + unsigned offset_index = p.first + shift + 1; + shift += p.second.length; + + for (unsigned subtable_id : p.second) + { + if (is_ext) + { + unsigned ext_id = create_extension_subtable (c, subtable_id, type); + c.graph.vertices_[subtable_id].parents.push (ext_id); + subtable_id = ext_id; + } + + auto* link = v.obj.real_links.push (); + link->width = 2; + link->objidx = subtable_id; + link->position = (char*) &new_lookup->subTable[offset_index++] - + (char*) new_lookup; + c.graph.vertices_[subtable_id].parents.push (this_index); + } + } + + // Repacker sort order depends on link order, which we've messed up so resort it. + v.obj.real_links.qsort (); + + // The head location of the lookup has changed, invalidating the lookups map entry + // in the context. Update the map. + c.lookups.set (this_index, new_lookup); + } + + void fix_existing_subtable_links (gsubgpos_graph_context_t& c, + unsigned this_index, + hb_vector_t>>& subtable_ids) + { + auto& v = c.graph.vertices_[this_index]; + Lookup* lookup = (Lookup*) v.obj.head; + + unsigned shift = 0; + for (const auto& p : subtable_ids) + { + unsigned insert_index = p.first + shift; + unsigned pos_offset = p.second.length * OT::Offset16::static_size; + unsigned insert_offset = (char*) &lookup->subTable[insert_index] - (char*) lookup; + shift += p.second.length; + + for (auto& l : v.obj.all_links_writer ()) + { + if (l.position > insert_offset) l.position += pos_offset; + } + } + } + + unsigned create_extension_subtable (gsubgpos_graph_context_t& c, + unsigned subtable_index, + unsigned type) + { + unsigned extension_size = OT::ExtensionFormat1::static_size; + + unsigned ext_index = c.create_node (extension_size); + if (ext_index == (unsigned) -1) + return -1; + + auto& ext_vertex = c.graph.vertices_[ext_index]; + ExtensionFormat1* extension = + (ExtensionFormat1*) ext_vertex.obj.head; + extension->reset (type); + + // Make extension point at the subtable. + auto* l = ext_vertex.obj.real_links.push (); + + l->width = 4; + l->objidx = subtable_index; + l->position = 4; + + return ext_index; + } + + bool make_subtable_extension (gsubgpos_graph_context_t& c, + unsigned lookup_index, + unsigned subtable_index) + { + unsigned type = lookupType; + + unsigned ext_index = create_extension_subtable(c, subtable_index, type); + if (ext_index == (unsigned) -1) + return false; + + auto& lookup_vertex = c.graph.vertices_[lookup_index]; + for (auto& l : lookup_vertex.obj.real_links.writer ()) + { + if (l.objidx == subtable_index) + // Change lookup to point at the extension. + l.objidx = ext_index; + } + + // Make extension point at the subtable. + auto& ext_vertex = c.graph.vertices_[ext_index]; + auto& subtable_vertex = c.graph.vertices_[subtable_index]; + ext_vertex.parents.push (lookup_index); + subtable_vertex.remap_parent (lookup_index, ext_index); + + return true; + } + + private: + unsigned extension_type (hb_tag_t table_tag) const + { + switch (table_tag) + { + case HB_OT_TAG_GPOS: return 9; + case HB_OT_TAG_GSUB: return 7; + default: return 0; + } + } +}; + +template +struct LookupList : public OT::LookupList +{ + bool sanitize (const graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < OT::LookupList::min_size) return false; + return vertex_len >= OT::LookupList::item_size * this->len; + } +}; + +struct GSTAR : public OT::GSUBGPOS +{ + static GSTAR* graph_to_gstar (graph_t& graph) + { + const auto& r = graph.root (); + + GSTAR* gstar = (GSTAR*) r.obj.head; + if (!gstar || !gstar->sanitize (r)) + return nullptr; + + return gstar; + } + + const void* get_lookup_list_field_offset () const + { + switch (u.version.major) { + case 1: return u.version1.get_lookup_list_offset (); +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.get_lookup_list_offset (); +#endif + default: return 0; + } + } + + bool sanitize (const graph_t::vertex_t& vertex) + { + int64_t len = vertex.obj.tail - vertex.obj.head; + if (len < OT::GSUBGPOS::min_size) return false; + return len >= get_size (); + } + + void find_lookups (graph_t& graph, + hb_hashmap_t& lookups /* OUT */) + { + switch (u.version.major) { + case 1: find_lookups (graph, lookups); break; +#ifndef HB_NO_BEYOND_64K + case 2: find_lookups (graph, lookups); break; +#endif + } + } + + unsigned get_lookup_list_index (graph_t& graph) + { + return graph.index_for_offset (graph.root_idx (), + get_lookup_list_field_offset()); + } + + template + void find_lookups (graph_t& graph, + hb_hashmap_t& lookups /* OUT */) + { + unsigned lookup_list_idx = get_lookup_list_index (graph); + const LookupList* lookupList = + (const LookupList*) graph.object (lookup_list_idx).head; + if (!lookupList || !lookupList->sanitize (graph.vertices_[lookup_list_idx])) + return; + + for (unsigned i = 0; i < lookupList->len; i++) + { + unsigned lookup_idx = graph.index_for_offset (lookup_list_idx, &(lookupList->arrayZ[i])); + Lookup* lookup = (Lookup*) graph.object (lookup_idx).head; + if (!lookup || !lookup->sanitize (graph.vertices_[lookup_idx])) continue; + lookups.set (lookup_idx, lookup); + } + } +}; + + + + +} + +#endif /* GRAPH_GSUBGPOS_GRAPH_HH */ diff --git a/gfx/harfbuzz/src/graph/markbasepos-graph.hh b/gfx/harfbuzz/src/graph/markbasepos-graph.hh new file mode 100644 index 0000000000..5e9d5aea3a --- /dev/null +++ b/gfx/harfbuzz/src/graph/markbasepos-graph.hh @@ -0,0 +1,513 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#ifndef GRAPH_MARKBASEPOS_GRAPH_HH +#define GRAPH_MARKBASEPOS_GRAPH_HH + +#include "split-helpers.hh" +#include "coverage-graph.hh" +#include "../OT/Layout/GPOS/MarkBasePos.hh" +#include "../OT/Layout/GPOS/PosLookupSubTable.hh" + +namespace graph { + +struct AnchorMatrix : public OT::Layout::GPOS_impl::AnchorMatrix +{ + bool sanitize (graph_t::vertex_t& vertex, unsigned class_count) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < AnchorMatrix::min_size) return false; + + return vertex_len >= AnchorMatrix::min_size + + OT::Offset16::static_size * class_count * this->rows; + } + + bool shrink (gsubgpos_graph_context_t& c, + unsigned this_index, + unsigned old_class_count, + unsigned new_class_count) + { + if (new_class_count >= old_class_count) return false; + auto& o = c.graph.vertices_[this_index].obj; + unsigned base_count = rows; + o.tail = o.head + + AnchorMatrix::min_size + + OT::Offset16::static_size * base_count * new_class_count; + + // Reposition links into the new indexing scheme. + for (auto& link : o.real_links.writer ()) + { + unsigned index = (link.position - 2) / 2; + unsigned base = index / old_class_count; + unsigned klass = index % old_class_count; + if (klass >= new_class_count) + // should have already been removed + return false; + + unsigned new_index = base * new_class_count + klass; + + link.position = (char*) &(this->matrixZ[new_index]) - (char*) this; + } + + return true; + } + + unsigned clone (gsubgpos_graph_context_t& c, + unsigned this_index, + unsigned start, + unsigned end, + unsigned class_count) + { + unsigned base_count = rows; + unsigned new_class_count = end - start; + unsigned size = AnchorMatrix::min_size + + OT::Offset16::static_size * new_class_count * rows; + unsigned prime_id = c.create_node (size); + if (prime_id == (unsigned) -1) return -1; + AnchorMatrix* prime = (AnchorMatrix*) c.graph.object (prime_id).head; + prime->rows = base_count; + + auto& o = c.graph.vertices_[this_index].obj; + int num_links = o.real_links.length; + for (int i = 0; i < num_links; i++) + { + const auto& link = o.real_links[i]; + unsigned old_index = (link.position - 2) / OT::Offset16::static_size; + unsigned klass = old_index % class_count; + if (klass < start || klass >= end) continue; + + unsigned base = old_index / class_count; + unsigned new_klass = klass - start; + unsigned new_index = base * new_class_count + new_klass; + + + unsigned child_idx = link.objidx; + c.graph.add_link (&(prime->matrixZ[new_index]), + prime_id, + child_idx); + + auto& child = c.graph.vertices_[child_idx]; + child.remove_parent (this_index); + + o.real_links.remove_unordered (i); + num_links--; + i--; + } + + return prime_id; + } +}; + +struct MarkArray : public OT::Layout::GPOS_impl::MarkArray +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + unsigned min_size = MarkArray::min_size; + if (vertex_len < min_size) return false; + + return vertex_len >= get_size (); + } + + bool shrink (gsubgpos_graph_context_t& c, + const hb_hashmap_t& mark_array_links, + unsigned this_index, + unsigned new_class_count) + { + auto& o = c.graph.vertices_[this_index].obj; + for (const auto& link : o.real_links) + c.graph.vertices_[link.objidx].remove_parent (this_index); + o.real_links.reset (); + + unsigned new_index = 0; + for (const auto& record : this->iter ()) + { + unsigned klass = record.klass; + if (klass >= new_class_count) continue; + + (*this)[new_index].klass = klass; + unsigned position = (char*) &record.markAnchor - (char*) this; + unsigned* objidx; + if (!mark_array_links.has (position, &objidx)) + { + new_index++; + continue; + } + + c.graph.add_link (&(*this)[new_index].markAnchor, this_index, *objidx); + new_index++; + } + + this->len = new_index; + o.tail = o.head + MarkArray::min_size + + OT::Layout::GPOS_impl::MarkRecord::static_size * new_index; + return true; + } + + unsigned clone (gsubgpos_graph_context_t& c, + unsigned this_index, + const hb_hashmap_t& pos_to_index, + hb_set_t& marks, + unsigned start_class) + { + unsigned size = MarkArray::min_size + + OT::Layout::GPOS_impl::MarkRecord::static_size * + marks.get_population (); + unsigned prime_id = c.create_node (size); + if (prime_id == (unsigned) -1) return -1; + MarkArray* prime = (MarkArray*) c.graph.object (prime_id).head; + prime->len = marks.get_population (); + + + unsigned i = 0; + for (hb_codepoint_t mark : marks) + { + (*prime)[i].klass = (*this)[mark].klass - start_class; + unsigned offset_pos = (char*) &((*this)[mark].markAnchor) - (char*) this; + unsigned* anchor_index; + if (pos_to_index.has (offset_pos, &anchor_index)) + c.graph.move_child (this_index, + &((*this)[mark].markAnchor), + prime_id, + &((*prime)[i].markAnchor)); + + i++; + } + + return prime_id; + } +}; + +struct MarkBasePosFormat1 : public OT::Layout::GPOS_impl::MarkBasePosFormat1_2 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + return vertex_len >= MarkBasePosFormat1::static_size; + } + + hb_vector_t split_subtables (gsubgpos_graph_context_t& c, + unsigned parent_index, + unsigned this_index) + { + hb_set_t visited; + + const unsigned base_coverage_id = c.graph.index_for_offset (this_index, &baseCoverage); + const unsigned base_size = + OT::Layout::GPOS_impl::PairPosFormat1_3::min_size + + MarkArray::min_size + + AnchorMatrix::min_size + + c.graph.vertices_[base_coverage_id].table_size (); + + hb_vector_t class_to_info = get_class_info (c, this_index); + + unsigned class_count = classCount; + auto base_array = c.graph.as_table (this_index, + &baseArray, + class_count); + if (!base_array) return hb_vector_t (); + unsigned base_count = base_array.table->rows; + + unsigned partial_coverage_size = 4; + unsigned accumulated = base_size; + hb_vector_t split_points; + + for (unsigned klass = 0; klass < class_count; klass++) + { + class_info_t& info = class_to_info[klass]; + partial_coverage_size += OT::HBUINT16::static_size * info.marks.get_population (); + unsigned accumulated_delta = + OT::Layout::GPOS_impl::MarkRecord::static_size * info.marks.get_population () + + OT::Offset16::static_size * base_count; + + for (unsigned objidx : info.child_indices) + accumulated_delta += c.graph.find_subgraph_size (objidx, visited); + + accumulated += accumulated_delta; + unsigned total = accumulated + partial_coverage_size; + + if (total >= (1 << 16)) + { + split_points.push (klass); + accumulated = base_size + accumulated_delta; + partial_coverage_size = 4 + OT::HBUINT16::static_size * info.marks.get_population (); + visited.clear (); // node sharing isn't allowed between splits. + } + } + + + const unsigned mark_array_id = c.graph.index_for_offset (this_index, &markArray); + split_context_t split_context { + c, + this, + c.graph.duplicate_if_shared (parent_index, this_index), + std::move (class_to_info), + c.graph.vertices_[mark_array_id].position_to_index_map (), + }; + + return actuate_subtable_split (split_context, split_points); + } + + private: + + struct class_info_t { + hb_set_t marks; + hb_vector_t child_indices; + }; + + struct split_context_t { + gsubgpos_graph_context_t& c; + MarkBasePosFormat1* thiz; + unsigned this_index; + hb_vector_t class_to_info; + hb_hashmap_t mark_array_links; + + hb_set_t marks_for (unsigned start, unsigned end) + { + hb_set_t marks; + for (unsigned klass = start; klass < end; klass++) + { + + class_to_info[klass].marks.iter () + | hb_sink (marks) + ; + } + return marks; + } + + unsigned original_count () + { + return thiz->classCount; + } + + unsigned clone_range (unsigned start, unsigned end) + { + return thiz->clone_range (*this, this->this_index, start, end); + } + + bool shrink (unsigned count) + { + return thiz->shrink (*this, this->this_index, count); + } + }; + + hb_vector_t get_class_info (gsubgpos_graph_context_t& c, + unsigned this_index) + { + hb_vector_t class_to_info; + + unsigned class_count= classCount; + if (!class_to_info.resize (class_count)) + return hb_vector_t(); + + auto mark_array = c.graph.as_table (this_index, &markArray); + if (!mark_array) return hb_vector_t (); + unsigned mark_count = mark_array.table->len; + for (unsigned mark = 0; mark < mark_count; mark++) + { + unsigned klass = (*mark_array.table)[mark].get_class (); + if (klass >= class_count) continue; + class_to_info[klass].marks.add (mark); + } + + for (const auto& link : mark_array.vertex->obj.real_links) + { + unsigned mark = (link.position - 2) / + OT::Layout::GPOS_impl::MarkRecord::static_size; + unsigned klass = (*mark_array.table)[mark].get_class (); + if (klass >= class_count) continue; + class_to_info[klass].child_indices.push (link.objidx); + } + + unsigned base_array_id = + c.graph.index_for_offset (this_index, &baseArray); + auto& base_array_v = c.graph.vertices_[base_array_id]; + + for (const auto& link : base_array_v.obj.real_links) + { + unsigned index = (link.position - 2) / OT::Offset16::static_size; + unsigned klass = index % class_count; + class_to_info[klass].child_indices.push (link.objidx); + } + + return class_to_info; + } + + bool shrink (split_context_t& sc, + unsigned this_index, + unsigned count) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Shrinking MarkBasePosFormat1 (%u) to [0, %u).", + this_index, + count); + + unsigned old_count = classCount; + if (count >= old_count) + return true; + + classCount = count; + + auto mark_coverage = sc.c.graph.as_mutable_table (this_index, + &markCoverage); + if (!mark_coverage) return false; + hb_set_t marks = sc.marks_for (0, count); + auto new_coverage = + + hb_enumerate (mark_coverage.table->iter ()) + | hb_filter (marks, hb_first) + | hb_map_retains_sorting (hb_second) + ; + if (!Coverage::make_coverage (sc.c, + new_coverage, + mark_coverage.index, + 4 + 2 * marks.get_population ())) + return false; + + + auto base_array = sc.c.graph.as_mutable_table (this_index, + &baseArray, + old_count); + if (!base_array || !base_array.table->shrink (sc.c, + base_array.index, + old_count, + count)) + return false; + + auto mark_array = sc.c.graph.as_mutable_table (this_index, + &markArray); + if (!mark_array || !mark_array.table->shrink (sc.c, + sc.mark_array_links, + mark_array.index, + count)) + return false; + + return true; + } + + // Create a new MarkBasePos that has all of the data for classes from [start, end). + unsigned clone_range (split_context_t& sc, + unsigned this_index, + unsigned start, unsigned end) const + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Cloning MarkBasePosFormat1 (%u) range [%u, %u).", this_index, start, end); + + graph_t& graph = sc.c.graph; + unsigned prime_size = OT::Layout::GPOS_impl::MarkBasePosFormat1_2::static_size; + + unsigned prime_id = sc.c.create_node (prime_size); + if (prime_id == (unsigned) -1) return -1; + + MarkBasePosFormat1* prime = (MarkBasePosFormat1*) graph.object (prime_id).head; + prime->format = this->format; + unsigned new_class_count = end - start; + prime->classCount = new_class_count; + + unsigned base_coverage_id = + graph.index_for_offset (sc.this_index, &baseCoverage); + graph.add_link (&(prime->baseCoverage), prime_id, base_coverage_id); + graph.duplicate (prime_id, base_coverage_id); + + auto mark_coverage = sc.c.graph.as_table (this_index, + &markCoverage); + if (!mark_coverage) return false; + hb_set_t marks = sc.marks_for (start, end); + auto new_coverage = + + hb_enumerate (mark_coverage.table->iter ()) + | hb_filter (marks, hb_first) + | hb_map_retains_sorting (hb_second) + ; + if (!Coverage::add_coverage (sc.c, + prime_id, + 2, + + new_coverage, + marks.get_population () * 2 + 4)) + return -1; + + auto mark_array = + graph.as_table (sc.this_index, &markArray); + if (!mark_array) return -1; + unsigned new_mark_array = + mark_array.table->clone (sc.c, + mark_array.index, + sc.mark_array_links, + marks, + start); + graph.add_link (&(prime->markArray), prime_id, new_mark_array); + + unsigned class_count = classCount; + auto base_array = + graph.as_table (sc.this_index, &baseArray, class_count); + if (!base_array) return -1; + unsigned new_base_array = + base_array.table->clone (sc.c, + base_array.index, + start, end, this->classCount); + graph.add_link (&(prime->baseArray), prime_id, new_base_array); + + return prime_id; + } +}; + + +struct MarkBasePos : public OT::Layout::GPOS_impl::MarkBasePos +{ + hb_vector_t split_subtables (gsubgpos_graph_context_t& c, + unsigned parent_index, + unsigned this_index) + { + switch (u.format) { + case 1: + return ((MarkBasePosFormat1*)(&u.format1))->split_subtables (c, parent_index, this_index); +#ifndef HB_NO_BEYOND_64K + case 2: HB_FALLTHROUGH; + // Don't split 24bit PairPos's. +#endif + default: + return hb_vector_t (); + } + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < u.format.get_size ()) return false; + + switch (u.format) { + case 1: + return ((MarkBasePosFormat1*)(&u.format1))->sanitize (vertex); +#ifndef HB_NO_BEYOND_64K + case 2: HB_FALLTHROUGH; +#endif + default: + // We don't handle format 3 and 4 here. + return false; + } + } +}; + + +} + +#endif // GRAPH_MARKBASEPOS_GRAPH_HH diff --git a/gfx/harfbuzz/src/graph/pairpos-graph.hh b/gfx/harfbuzz/src/graph/pairpos-graph.hh new file mode 100644 index 0000000000..1c13eb24f9 --- /dev/null +++ b/gfx/harfbuzz/src/graph/pairpos-graph.hh @@ -0,0 +1,647 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#ifndef GRAPH_PAIRPOS_GRAPH_HH +#define GRAPH_PAIRPOS_GRAPH_HH + +#include "split-helpers.hh" +#include "coverage-graph.hh" +#include "classdef-graph.hh" +#include "../OT/Layout/GPOS/PairPos.hh" +#include "../OT/Layout/GPOS/PosLookupSubTable.hh" + +namespace graph { + +struct PairPosFormat1 : public OT::Layout::GPOS_impl::PairPosFormat1_3 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + unsigned min_size = OT::Layout::GPOS_impl::PairPosFormat1_3::min_size; + if (vertex_len < min_size) return false; + + return vertex_len >= + min_size + pairSet.get_size () - pairSet.len.get_size(); + } + + hb_vector_t split_subtables (gsubgpos_graph_context_t& c, + unsigned parent_index, + unsigned this_index) + { + hb_set_t visited; + + const unsigned coverage_id = c.graph.index_for_offset (this_index, &coverage); + const unsigned coverage_size = c.graph.vertices_[coverage_id].table_size (); + const unsigned base_size = OT::Layout::GPOS_impl::PairPosFormat1_3::min_size; + + unsigned partial_coverage_size = 4; + unsigned accumulated = base_size; + hb_vector_t split_points; + for (unsigned i = 0; i < pairSet.len; i++) + { + unsigned pair_set_index = pair_set_graph_index (c, this_index, i); + unsigned accumulated_delta = + c.graph.find_subgraph_size (pair_set_index, visited) + + SmallTypes::size; // for PairSet offset. + partial_coverage_size += OT::HBUINT16::static_size; + + accumulated += accumulated_delta; + unsigned total = accumulated + hb_min (partial_coverage_size, coverage_size); + + if (total >= (1 << 16)) + { + split_points.push (i); + accumulated = base_size + accumulated_delta; + partial_coverage_size = 6; + visited.clear (); // node sharing isn't allowed between splits. + } + } + + split_context_t split_context { + c, + this, + c.graph.duplicate_if_shared (parent_index, this_index), + }; + + return actuate_subtable_split (split_context, split_points); + } + + private: + + struct split_context_t { + gsubgpos_graph_context_t& c; + PairPosFormat1* thiz; + unsigned this_index; + + unsigned original_count () + { + return thiz->pairSet.len; + } + + unsigned clone_range (unsigned start, unsigned end) + { + return thiz->clone_range (this->c, this->this_index, start, end); + } + + bool shrink (unsigned count) + { + return thiz->shrink (this->c, this->this_index, count); + } + }; + + bool shrink (gsubgpos_graph_context_t& c, + unsigned this_index, + unsigned count) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Shrinking PairPosFormat1 (%u) to [0, %u).", + this_index, + count); + unsigned old_count = pairSet.len; + if (count >= old_count) + return true; + + pairSet.len = count; + c.graph.vertices_[this_index].obj.tail -= (old_count - count) * SmallTypes::size; + + auto coverage = c.graph.as_mutable_table (this_index, &this->coverage); + if (!coverage) return false; + + unsigned coverage_size = coverage.vertex->table_size (); + auto new_coverage = + + hb_zip (coverage.table->iter (), hb_range ()) + | hb_filter ([&] (hb_pair_t p) { + return p.second < count; + }) + | hb_map_retains_sorting (hb_first) + ; + + return Coverage::make_coverage (c, new_coverage, coverage.index, coverage_size); + } + + // Create a new PairPos including PairSet's from start (inclusive) to end (exclusive). + // Returns object id of the new object. + unsigned clone_range (gsubgpos_graph_context_t& c, + unsigned this_index, + unsigned start, unsigned end) const + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Cloning PairPosFormat1 (%u) range [%u, %u).", this_index, start, end); + + unsigned num_pair_sets = end - start; + unsigned prime_size = OT::Layout::GPOS_impl::PairPosFormat1_3::min_size + + num_pair_sets * SmallTypes::size; + + unsigned pair_pos_prime_id = c.create_node (prime_size); + if (pair_pos_prime_id == (unsigned) -1) return -1; + + PairPosFormat1* pair_pos_prime = (PairPosFormat1*) c.graph.object (pair_pos_prime_id).head; + pair_pos_prime->format = this->format; + pair_pos_prime->valueFormat[0] = this->valueFormat[0]; + pair_pos_prime->valueFormat[1] = this->valueFormat[1]; + pair_pos_prime->pairSet.len = num_pair_sets; + + for (unsigned i = start; i < end; i++) + { + c.graph.move_child<> (this_index, + &pairSet[i], + pair_pos_prime_id, + &pair_pos_prime->pairSet[i - start]); + } + + unsigned coverage_id = c.graph.index_for_offset (this_index, &coverage); + if (!Coverage::clone_coverage (c, + coverage_id, + pair_pos_prime_id, + 2, + start, end)) + return -1; + + return pair_pos_prime_id; + } + + + + unsigned pair_set_graph_index (gsubgpos_graph_context_t& c, unsigned this_index, unsigned i) const + { + return c.graph.index_for_offset (this_index, &pairSet[i]); + } +}; + +struct PairPosFormat2 : public OT::Layout::GPOS_impl::PairPosFormat2_4 +{ + bool sanitize (graph_t::vertex_t& vertex) const + { + size_t vertex_len = vertex.table_size (); + unsigned min_size = OT::Layout::GPOS_impl::PairPosFormat2_4::min_size; + if (vertex_len < min_size) return false; + + const unsigned class1_count = class1Count; + return vertex_len >= + min_size + class1_count * get_class1_record_size (); + } + + hb_vector_t split_subtables (gsubgpos_graph_context_t& c, + unsigned parent_index, + unsigned this_index) + { + const unsigned base_size = OT::Layout::GPOS_impl::PairPosFormat2_4::min_size; + const unsigned class_def_2_size = size_of (c, this_index, &classDef2); + const Coverage* coverage = get_coverage (c, this_index); + const ClassDef* class_def_1 = get_class_def_1 (c, this_index); + auto gid_and_class = + + coverage->iter () + | hb_map_retains_sorting ([&] (hb_codepoint_t gid) { + return hb_pair_t (gid, class_def_1->get_class (gid)); + }) + ; + class_def_size_estimator_t estimator (gid_and_class); + + const unsigned class1_count = class1Count; + const unsigned class2_count = class2Count; + const unsigned class1_record_size = get_class1_record_size (); + + const unsigned value_1_len = valueFormat1.get_len (); + const unsigned value_2_len = valueFormat2.get_len (); + const unsigned total_value_len = value_1_len + value_2_len; + + unsigned accumulated = base_size; + unsigned coverage_size = 4; + unsigned class_def_1_size = 4; + unsigned max_coverage_size = coverage_size; + unsigned max_class_def_1_size = class_def_1_size; + + hb_vector_t split_points; + + hb_hashmap_t device_tables = get_all_device_tables (c, this_index); + hb_vector_t format1_device_table_indices = valueFormat1.get_device_table_indices (); + hb_vector_t format2_device_table_indices = valueFormat2.get_device_table_indices (); + bool has_device_tables = bool(format1_device_table_indices) || bool(format2_device_table_indices); + + hb_set_t visited; + for (unsigned i = 0; i < class1_count; i++) + { + unsigned accumulated_delta = class1_record_size; + coverage_size += estimator.incremental_coverage_size (i); + class_def_1_size += estimator.incremental_class_def_size (i); + max_coverage_size = hb_max (max_coverage_size, coverage_size); + max_class_def_1_size = hb_max (max_class_def_1_size, class_def_1_size); + + if (has_device_tables) { + for (unsigned j = 0; j < class2_count; j++) + { + unsigned value1_index = total_value_len * (class2_count * i + j); + unsigned value2_index = value1_index + value_1_len; + accumulated_delta += size_of_value_record_children (c, + device_tables, + format1_device_table_indices, + value1_index, + visited); + accumulated_delta += size_of_value_record_children (c, + device_tables, + format2_device_table_indices, + value2_index, + visited); + } + } + + accumulated += accumulated_delta; + unsigned total = accumulated + + coverage_size + class_def_1_size + class_def_2_size + // The largest object will pack last and can exceed the size limit. + - hb_max (hb_max (coverage_size, class_def_1_size), class_def_2_size); + if (total >= (1 << 16)) + { + split_points.push (i); + // split does not include i, so add the size for i when we reset the size counters. + accumulated = base_size + accumulated_delta; + coverage_size = 4 + estimator.incremental_coverage_size (i); + class_def_1_size = 4 + estimator.incremental_class_def_size (i); + visited.clear (); // node sharing isn't allowed between splits. + } + } + + split_context_t split_context { + c, + this, + c.graph.duplicate_if_shared (parent_index, this_index), + class1_record_size, + total_value_len, + value_1_len, + value_2_len, + max_coverage_size, + max_class_def_1_size, + device_tables, + format1_device_table_indices, + format2_device_table_indices + }; + + return actuate_subtable_split (split_context, split_points); + } + private: + + struct split_context_t + { + gsubgpos_graph_context_t& c; + PairPosFormat2* thiz; + unsigned this_index; + unsigned class1_record_size; + unsigned value_record_len; + unsigned value1_record_len; + unsigned value2_record_len; + unsigned max_coverage_size; + unsigned max_class_def_size; + + const hb_hashmap_t& device_tables; + const hb_vector_t& format1_device_table_indices; + const hb_vector_t& format2_device_table_indices; + + unsigned original_count () + { + return thiz->class1Count; + } + + unsigned clone_range (unsigned start, unsigned end) + { + return thiz->clone_range (*this, start, end); + } + + bool shrink (unsigned count) + { + return thiz->shrink (*this, count); + } + }; + + size_t get_class1_record_size () const + { + const size_t class2_count = class2Count; + return + class2_count * (valueFormat1.get_size () + valueFormat2.get_size ()); + } + + unsigned clone_range (split_context_t& split_context, + unsigned start, unsigned end) const + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Cloning PairPosFormat2 (%u) range [%u, %u).", split_context.this_index, start, end); + + graph_t& graph = split_context.c.graph; + + unsigned num_records = end - start; + unsigned prime_size = OT::Layout::GPOS_impl::PairPosFormat2_4::min_size + + num_records * split_context.class1_record_size; + + unsigned pair_pos_prime_id = split_context.c.create_node (prime_size); + if (pair_pos_prime_id == (unsigned) -1) return -1; + + PairPosFormat2* pair_pos_prime = + (PairPosFormat2*) graph.object (pair_pos_prime_id).head; + pair_pos_prime->format = this->format; + pair_pos_prime->valueFormat1 = this->valueFormat1; + pair_pos_prime->valueFormat2 = this->valueFormat2; + pair_pos_prime->class1Count = num_records; + pair_pos_prime->class2Count = this->class2Count; + clone_class1_records (split_context, + pair_pos_prime_id, + start, + end); + + unsigned coverage_id = + graph.index_for_offset (split_context.this_index, &coverage); + unsigned class_def_1_id = + graph.index_for_offset (split_context.this_index, &classDef1); + auto& coverage_v = graph.vertices_[coverage_id]; + auto& class_def_1_v = graph.vertices_[class_def_1_id]; + Coverage* coverage_table = (Coverage*) coverage_v.obj.head; + ClassDef* class_def_1_table = (ClassDef*) class_def_1_v.obj.head; + if (!coverage_table + || !coverage_table->sanitize (coverage_v) + || !class_def_1_table + || !class_def_1_table->sanitize (class_def_1_v)) + return -1; + + auto klass_map = + + coverage_table->iter () + | hb_map_retains_sorting ([&] (hb_codepoint_t gid) { + return hb_pair_t (gid, class_def_1_table->get_class (gid)); + }) + | hb_filter ([&] (hb_codepoint_t klass) { + return klass >= start && klass < end; + }, hb_second) + | hb_map_retains_sorting ([&] (hb_pair_t gid_and_class) { + // Classes must be from 0...N so subtract start + return hb_pair_t (gid_and_class.first, gid_and_class.second - start); + }) + ; + + if (!Coverage::add_coverage (split_context.c, + pair_pos_prime_id, + 2, + + klass_map | hb_map_retains_sorting (hb_first), + split_context.max_coverage_size)) + return -1; + + // classDef1 + if (!ClassDef::add_class_def (split_context.c, + pair_pos_prime_id, + 8, + + klass_map, + split_context.max_class_def_size)) + return -1; + + // classDef2 + unsigned class_def_2_id = + graph.index_for_offset (split_context.this_index, &classDef2); + auto* class_def_link = graph.vertices_[pair_pos_prime_id].obj.real_links.push (); + class_def_link->width = SmallTypes::size; + class_def_link->objidx = class_def_2_id; + class_def_link->position = 10; + graph.vertices_[class_def_2_id].parents.push (pair_pos_prime_id); + graph.duplicate (pair_pos_prime_id, class_def_2_id); + + return pair_pos_prime_id; + } + + void clone_class1_records (split_context_t& split_context, + unsigned pair_pos_prime_id, + unsigned start, unsigned end) const + { + PairPosFormat2* pair_pos_prime = + (PairPosFormat2*) split_context.c.graph.object (pair_pos_prime_id).head; + + char* start_addr = ((char*)&values[0]) + start * split_context.class1_record_size; + unsigned num_records = end - start; + hb_memcpy (&pair_pos_prime->values[0], + start_addr, + num_records * split_context.class1_record_size); + + if (!split_context.format1_device_table_indices + && !split_context.format2_device_table_indices) + // No device tables to move over. + return; + + unsigned class2_count = class2Count; + for (unsigned i = start; i < end; i++) + { + for (unsigned j = 0; j < class2_count; j++) + { + unsigned value1_index = split_context.value_record_len * (class2_count * i + j); + unsigned value2_index = value1_index + split_context.value1_record_len; + + unsigned new_value1_index = split_context.value_record_len * (class2_count * (i - start) + j); + unsigned new_value2_index = new_value1_index + split_context.value1_record_len; + + transfer_device_tables (split_context, + pair_pos_prime_id, + split_context.format1_device_table_indices, + value1_index, + new_value1_index); + + transfer_device_tables (split_context, + pair_pos_prime_id, + split_context.format2_device_table_indices, + value2_index, + new_value2_index); + } + } + } + + void transfer_device_tables (split_context_t& split_context, + unsigned pair_pos_prime_id, + const hb_vector_t& device_table_indices, + unsigned old_value_record_index, + unsigned new_value_record_index) const + { + PairPosFormat2* pair_pos_prime = + (PairPosFormat2*) split_context.c.graph.object (pair_pos_prime_id).head; + + for (unsigned i : device_table_indices) + { + OT::Offset16* record = (OT::Offset16*) &values[old_value_record_index + i]; + unsigned record_position = ((char*) record) - ((char*) this); + if (!split_context.device_tables.has (record_position)) continue; + + split_context.c.graph.move_child ( + split_context.this_index, + record, + pair_pos_prime_id, + (OT::Offset16*) &pair_pos_prime->values[new_value_record_index + i]); + } + } + + bool shrink (split_context_t& split_context, + unsigned count) + { + DEBUG_MSG (SUBSET_REPACK, nullptr, + " Shrinking PairPosFormat2 (%u) to [0, %u).", + split_context.this_index, + count); + unsigned old_count = class1Count; + if (count >= old_count) + return true; + + graph_t& graph = split_context.c.graph; + class1Count = count; + graph.vertices_[split_context.this_index].obj.tail -= + (old_count - count) * split_context.class1_record_size; + + auto coverage = + graph.as_mutable_table (split_context.this_index, &this->coverage); + if (!coverage) return false; + + auto class_def_1 = + graph.as_mutable_table (split_context.this_index, &classDef1); + if (!class_def_1) return false; + + auto klass_map = + + coverage.table->iter () + | hb_map_retains_sorting ([&] (hb_codepoint_t gid) { + return hb_pair_t (gid, class_def_1.table->get_class (gid)); + }) + | hb_filter ([&] (hb_codepoint_t klass) { + return klass < count; + }, hb_second) + ; + + auto new_coverage = + klass_map | hb_map_retains_sorting (hb_first); + if (!Coverage::make_coverage (split_context.c, + + new_coverage, + coverage.index, + // existing ranges my not be kept, worst case size is a format 1 + // coverage table. + 4 + new_coverage.len() * 2)) + return false; + + return ClassDef::make_class_def (split_context.c, + + klass_map, + class_def_1.index, + class_def_1.vertex->table_size ()); + } + + hb_hashmap_t + get_all_device_tables (gsubgpos_graph_context_t& c, + unsigned this_index) const + { + const auto& v = c.graph.vertices_[this_index]; + return v.position_to_index_map (); + } + + const Coverage* get_coverage (gsubgpos_graph_context_t& c, + unsigned this_index) const + { + unsigned coverage_id = c.graph.index_for_offset (this_index, &coverage); + auto& coverage_v = c.graph.vertices_[coverage_id]; + + Coverage* coverage_table = (Coverage*) coverage_v.obj.head; + if (!coverage_table || !coverage_table->sanitize (coverage_v)) + return &Null(Coverage); + return coverage_table; + } + + const ClassDef* get_class_def_1 (gsubgpos_graph_context_t& c, + unsigned this_index) const + { + unsigned class_def_1_id = c.graph.index_for_offset (this_index, &classDef1); + auto& class_def_1_v = c.graph.vertices_[class_def_1_id]; + + ClassDef* class_def_1_table = (ClassDef*) class_def_1_v.obj.head; + if (!class_def_1_table || !class_def_1_table->sanitize (class_def_1_v)) + return &Null(ClassDef); + return class_def_1_table; + } + + unsigned size_of_value_record_children (gsubgpos_graph_context_t& c, + const hb_hashmap_t& device_tables, + const hb_vector_t device_table_indices, + unsigned value_record_index, + hb_set_t& visited) + { + unsigned size = 0; + for (unsigned i : device_table_indices) + { + OT::Layout::GPOS_impl::Value* record = &values[value_record_index + i]; + unsigned record_position = ((char*) record) - ((char*) this); + unsigned* obj_idx; + if (!device_tables.has (record_position, &obj_idx)) continue; + size += c.graph.find_subgraph_size (*obj_idx, visited); + } + return size; + } + + unsigned size_of (gsubgpos_graph_context_t& c, + unsigned this_index, + const void* offset) const + { + const unsigned id = c.graph.index_for_offset (this_index, offset); + return c.graph.vertices_[id].table_size (); + } +}; + +struct PairPos : public OT::Layout::GPOS_impl::PairPos +{ + hb_vector_t split_subtables (gsubgpos_graph_context_t& c, + unsigned parent_index, + unsigned this_index) + { + switch (u.format) { + case 1: + return ((PairPosFormat1*)(&u.format1))->split_subtables (c, parent_index, this_index); + case 2: + return ((PairPosFormat2*)(&u.format2))->split_subtables (c, parent_index, this_index); +#ifndef HB_NO_BEYOND_64K + case 3: HB_FALLTHROUGH; + case 4: HB_FALLTHROUGH; + // Don't split 24bit PairPos's. +#endif + default: + return hb_vector_t (); + } + } + + bool sanitize (graph_t::vertex_t& vertex) const + { + int64_t vertex_len = vertex.obj.tail - vertex.obj.head; + if (vertex_len < u.format.get_size ()) return false; + + switch (u.format) { + case 1: + return ((PairPosFormat1*)(&u.format1))->sanitize (vertex); + case 2: + return ((PairPosFormat2*)(&u.format2))->sanitize (vertex); +#ifndef HB_NO_BEYOND_64K + case 3: HB_FALLTHROUGH; + case 4: HB_FALLTHROUGH; +#endif + default: + // We don't handle format 3 and 4 here. + return false; + } + } +}; + +} + +#endif // GRAPH_PAIRPOS_GRAPH_HH diff --git a/gfx/harfbuzz/src/graph/serialize.hh b/gfx/harfbuzz/src/graph/serialize.hh new file mode 100644 index 0000000000..2e0b845baa --- /dev/null +++ b/gfx/harfbuzz/src/graph/serialize.hh @@ -0,0 +1,270 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#ifndef GRAPH_SERIALIZE_HH +#define GRAPH_SERIALIZE_HH + +namespace graph { + +struct overflow_record_t +{ + unsigned parent; + unsigned child; + + bool operator != (const overflow_record_t o) const + { return !(*this == o); } + + inline bool operator == (const overflow_record_t& o) const + { + return parent == o.parent && + child == o.child; + } + + inline uint32_t hash () const + { + uint32_t current = 0; + current = current * 31 + hb_hash (parent); + current = current * 31 + hb_hash (child); + return current; + } +}; + +inline +int64_t compute_offset ( + const graph_t& graph, + unsigned parent_idx, + const hb_serialize_context_t::object_t::link_t& link) +{ + const auto& parent = graph.vertices_[parent_idx]; + const auto& child = graph.vertices_[link.objidx]; + int64_t offset = 0; + switch ((hb_serialize_context_t::whence_t) link.whence) { + case hb_serialize_context_t::whence_t::Head: + offset = child.start - parent.start; break; + case hb_serialize_context_t::whence_t::Tail: + offset = child.start - parent.end; break; + case hb_serialize_context_t::whence_t::Absolute: + offset = child.start; break; + } + + assert (offset >= link.bias); + offset -= link.bias; + return offset; +} + +inline +bool is_valid_offset (int64_t offset, + const hb_serialize_context_t::object_t::link_t& link) +{ + if (unlikely (!link.width)) + // Virtual links can't overflow. + return link.is_signed || offset >= 0; + + if (link.is_signed) + { + if (link.width == 4) + return offset >= -((int64_t) 1 << 31) && offset < ((int64_t) 1 << 31); + else + return offset >= -(1 << 15) && offset < (1 << 15); + } + else + { + if (link.width == 4) + return offset >= 0 && offset < ((int64_t) 1 << 32); + else if (link.width == 3) + return offset >= 0 && offset < ((int32_t) 1 << 24); + else + return offset >= 0 && offset < (1 << 16); + } +} + +/* + * Will any offsets overflow on graph when it's serialized? + */ +inline bool +will_overflow (graph_t& graph, + hb_vector_t* overflows = nullptr) +{ + if (overflows) overflows->resize (0); + graph.update_positions (); + + hb_hashmap_t record_set; + const auto& vertices = graph.vertices_; + for (int parent_idx = vertices.length - 1; parent_idx >= 0; parent_idx--) + { + // Don't need to check virtual links for overflow + for (const auto& link : vertices.arrayZ[parent_idx].obj.real_links) + { + int64_t offset = compute_offset (graph, parent_idx, link); + if (likely (is_valid_offset (offset, link))) + continue; + + if (!overflows) return true; + + overflow_record_t r; + r.parent = parent_idx; + r.child = link.objidx; + if (record_set.has(&r)) continue; // don't keep duplicate overflows. + + overflows->push (r); + record_set.set(&r, true); + } + } + + if (!overflows) return false; + return overflows->length; +} + +inline +void print_overflows (graph_t& graph, + const hb_vector_t& overflows) +{ + if (!DEBUG_ENABLED(SUBSET_REPACK)) return; + + graph.update_parents (); + int limit = 10; + for (const auto& o : overflows) + { + if (!limit--) break; + const auto& parent = graph.vertices_[o.parent]; + const auto& child = graph.vertices_[o.child]; + DEBUG_MSG (SUBSET_REPACK, nullptr, + " overflow from " + "%4u (%4u in, %4u out, space %2u) => " + "%4u (%4u in, %4u out, space %2u)", + o.parent, + parent.incoming_edges (), + parent.obj.real_links.length + parent.obj.virtual_links.length, + graph.space_for (o.parent), + o.child, + child.incoming_edges (), + child.obj.real_links.length + child.obj.virtual_links.length, + graph.space_for (o.child)); + } + if (overflows.length > 10) { + DEBUG_MSG (SUBSET_REPACK, nullptr, " ... plus %u more overflows.", overflows.length - 10); + } +} + +template inline void +serialize_link_of_type (const hb_serialize_context_t::object_t::link_t& link, + char* head, + hb_serialize_context_t* c) +{ + OT::Offset* offset = reinterpret_cast*> (head + link.position); + *offset = 0; + c->add_link (*offset, + // serializer has an extra nil object at the start of the + // object array. So all id's are +1 of what our id's are. + link.objidx + 1, + (hb_serialize_context_t::whence_t) link.whence, + link.bias); +} + +inline +void serialize_link (const hb_serialize_context_t::object_t::link_t& link, + char* head, + hb_serialize_context_t* c) +{ + switch (link.width) + { + case 0: + // Virtual links aren't serialized. + return; + case 4: + if (link.is_signed) + { + serialize_link_of_type (link, head, c); + } else { + serialize_link_of_type (link, head, c); + } + return; + case 2: + if (link.is_signed) + { + serialize_link_of_type (link, head, c); + } else { + serialize_link_of_type (link, head, c); + } + return; + case 3: + serialize_link_of_type (link, head, c); + return; + default: + // Unexpected link width. + assert (0); + } +} + +/* + * serialize graph into the provided serialization buffer. + */ +inline hb_blob_t* serialize (const graph_t& graph) +{ + hb_vector_t buffer; + size_t size = graph.total_size_in_bytes (); + if (!buffer.alloc (size)) { + DEBUG_MSG (SUBSET_REPACK, nullptr, "Unable to allocate output buffer."); + return nullptr; + } + hb_serialize_context_t c((void *) buffer, size); + + c.start_serialize (); + const auto& vertices = graph.vertices_; + for (unsigned i = 0; i < vertices.length; i++) { + c.push (); + + size_t size = vertices[i].obj.tail - vertices[i].obj.head; + char* start = c.allocate_size (size); + if (!start) { + DEBUG_MSG (SUBSET_REPACK, nullptr, "Buffer out of space."); + return nullptr; + } + + hb_memcpy (start, vertices[i].obj.head, size); + + // Only real links needs to be serialized. + for (const auto& link : vertices[i].obj.real_links) + serialize_link (link, start, &c); + + // All duplications are already encoded in the graph, so don't + // enable sharing during packing. + c.pop_pack (false); + } + c.end_serialize (); + + if (c.in_error ()) { + DEBUG_MSG (SUBSET_REPACK, nullptr, "Error during serialization. Err flag: %d", + c.errors); + return nullptr; + } + + return c.copy_blob (); +} + +} // namespace graph + +#endif // GRAPH_SERIALIZE_HH diff --git a/gfx/harfbuzz/src/graph/split-helpers.hh b/gfx/harfbuzz/src/graph/split-helpers.hh new file mode 100644 index 0000000000..61fd7c2d2f --- /dev/null +++ b/gfx/harfbuzz/src/graph/split-helpers.hh @@ -0,0 +1,69 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#ifndef GRAPH_SPLIT_HELPERS_HH +#define GRAPH_SPLIT_HELPERS_HH + +namespace graph { + +template +HB_INTERNAL +hb_vector_t actuate_subtable_split (Context& split_context, + const hb_vector_t& split_points) +{ + hb_vector_t new_objects; + if (!split_points) + return new_objects; + + for (unsigned i = 0; i < split_points.length; i++) + { + unsigned start = split_points[i]; + unsigned end = (i < split_points.length - 1) + ? split_points[i + 1] + : split_context.original_count (); + unsigned id = split_context.clone_range (start, end); + + if (id == (unsigned) -1) + { + new_objects.reset (); + new_objects.allocated = -1; // mark error + return new_objects; + } + new_objects.push (id); + } + + if (!split_context.shrink (split_points[0])) + { + new_objects.reset (); + new_objects.allocated = -1; // mark error + } + + return new_objects; +} + +} + +#endif // GRAPH_SPLIT_HELPERS_HH diff --git a/gfx/harfbuzz/src/graph/test-classdef-graph.cc b/gfx/harfbuzz/src/graph/test-classdef-graph.cc new file mode 100644 index 0000000000..55854ff5c2 --- /dev/null +++ b/gfx/harfbuzz/src/graph/test-classdef-graph.cc @@ -0,0 +1,119 @@ +/* + * Copyright © 2022 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#include "gsubgpos-context.hh" +#include "classdef-graph.hh" + +typedef hb_pair_t gid_and_class_t; +typedef hb_vector_t gid_and_class_list_t; + + +static bool incremental_size_is (const gid_and_class_list_t& list, unsigned klass, + unsigned cov_expected, unsigned class_def_expected) +{ + graph::class_def_size_estimator_t estimator (list.iter ()); + + unsigned result = estimator.incremental_coverage_size (klass); + if (result != cov_expected) + { + printf ("FAIL: coverage expected size %u but was %u\n", cov_expected, result); + return false; + } + + result = estimator.incremental_class_def_size (klass); + if (result != class_def_expected) + { + printf ("FAIL: class def expected size %u but was %u\n", class_def_expected, result); + return false; + } + + return true; +} + +static void test_class_and_coverage_size_estimates () +{ + gid_and_class_list_t empty = { + }; + assert (incremental_size_is (empty, 0, 0, 0)); + assert (incremental_size_is (empty, 1, 0, 0)); + + gid_and_class_list_t class_zero = { + {5, 0}, + }; + assert (incremental_size_is (class_zero, 0, 2, 0)); + + gid_and_class_list_t consecutive = { + {4, 0}, + {5, 0}, + {6, 1}, + {7, 1}, + {8, 2}, + {9, 2}, + {10, 2}, + {11, 2}, + }; + assert (incremental_size_is (consecutive, 0, 4, 0)); + assert (incremental_size_is (consecutive, 1, 4, 4)); + assert (incremental_size_is (consecutive, 2, 8, 6)); + + gid_and_class_list_t non_consecutive = { + {4, 0}, + {5, 0}, + + {6, 1}, + {7, 1}, + + {9, 2}, + {10, 2}, + {11, 2}, + {12, 2}, + }; + assert (incremental_size_is (non_consecutive, 0, 4, 0)); + assert (incremental_size_is (non_consecutive, 1, 4, 6)); + assert (incremental_size_is (non_consecutive, 2, 8, 6)); + + gid_and_class_list_t multiple_ranges = { + {4, 0}, + {5, 0}, + + {6, 1}, + {7, 1}, + + {9, 1}, + + {11, 1}, + {12, 1}, + {13, 1}, + }; + assert (incremental_size_is (multiple_ranges, 0, 4, 0)); + assert (incremental_size_is (multiple_ranges, 1, 2 * 6, 3 * 6)); +} + +int +main (int argc, char **argv) +{ + test_class_and_coverage_size_estimates (); +} diff --git a/gfx/harfbuzz/src/harfbuzz-cairo.pc.in b/gfx/harfbuzz/src/harfbuzz-cairo.pc.in new file mode 100644 index 0000000000..df97ff1512 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-cairo.pc.in @@ -0,0 +1,12 @@ +prefix=%prefix% +exec_prefix=%exec_prefix% +libdir=%libdir% +includedir=%includedir% + +Name: harfbuzz cairo integration +Description: HarfBuzz cairo integration +Version: %VERSION% + +Requires: harfbuzz = %VERSION% +Libs: -L${libdir} -lharfbuzz-cairo +Cflags: -I${includedir}/harfbuzz diff --git a/gfx/harfbuzz/src/harfbuzz-config.cmake.in b/gfx/harfbuzz/src/harfbuzz-config.cmake.in new file mode 100644 index 0000000000..ced97919a2 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-config.cmake.in @@ -0,0 +1,62 @@ +set(_harfbuzz_libdir "@libdir@") +set(_harfbuzz_includedir "@includedir@") + +# Extract version information from libtool. +set(_harfbuzz_version_info "@HB_LIBTOOL_VERSION_INFO@") +string(REPLACE ":" ";" _harfbuzz_version_info "${_harfbuzz_version_info}") +list(GET _harfbuzz_version_info 0 + _harfbuzz_current) +list(GET _harfbuzz_version_info 1 + _harfbuzz_revision) +list(GET _harfbuzz_version_info 2 + _harfbuzz_age) +unset(_harfbuzz_version_info) + +if ("@default_library@" MATCHES "static") + set(_harfbuzz_lib_suffix ".a") +else () + if (APPLE) + set(_harfbuzz_lib_suffix ".0${CMAKE_SHARED_LIBRARY_SUFFIX}") + elseif (UNIX) + set(_harfbuzz_lib_suffix "${CMAKE_SHARED_LIBRARY_SUFFIX}.0.${_harfbuzz_current}.${_harfbuzz_revision}") + else () + # Unsupported. + set(harfbuzz_FOUND 0) + endif () +endif () + +# Add the libraries. +add_library(harfbuzz::harfbuzz SHARED IMPORTED) +set_target_properties(harfbuzz::harfbuzz PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${_harfbuzz_includedir}/harfbuzz" + IMPORTED_LOCATION "${_harfbuzz_libdir}/libharfbuzz${_harfbuzz_lib_suffix}") + +add_library(harfbuzz::icu SHARED IMPORTED) +set_target_properties(harfbuzz::icu PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${_harfbuzz_includedir}/harfbuzz" + INTERFACE_LINK_LIBRARIES "harfbuzz::harfbuzz" + IMPORTED_LOCATION "${_harfbuzz_libdir}/libharfbuzz-icu${_harfbuzz_lib_suffix}") + +add_library(harfbuzz::subset SHARED IMPORTED) +set_target_properties(harfbuzz::subset PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${_harfbuzz_includedir}/harfbuzz" + INTERFACE_LINK_LIBRARIES "harfbuzz::harfbuzz" + IMPORTED_LOCATION "${_harfbuzz_libdir}/libharfbuzz-subset${_harfbuzz_lib_suffix}") + +# Only add the gobject library if it was built. +set(_harfbuzz_have_gobject "@have_gobject@") +if (_harfbuzz_have_gobject) + add_library(harfbuzz::gobject SHARED IMPORTED) + set_target_properties(harfbuzz::gobject PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${_harfbuzz_includedir}/harfbuzz" + INTERFACE_LINK_LIBRARIES "harfbuzz::harfbuzz" + IMPORTED_LOCATION "${_harfbuzz_libdir}/libharfbuzz-gobject${_harfbuzz_lib_suffix}") +endif () + +# Clean out variables we used in our scope. +unset(_harfbuzz_lib_suffix) +unset(_harfbuzz_current) +unset(_harfbuzz_revision) +unset(_harfbuzz_age) +unset(_harfbuzz_includedir) +unset(_harfbuzz_libdir) diff --git a/gfx/harfbuzz/src/harfbuzz-gobject.pc.in b/gfx/harfbuzz/src/harfbuzz-gobject.pc.in new file mode 100644 index 0000000000..7008360190 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-gobject.pc.in @@ -0,0 +1,12 @@ +prefix=%prefix% +exec_prefix=%exec_prefix% +libdir=%libdir% +includedir=%includedir% + +Name: harfbuzz +Description: HarfBuzz text shaping library GObject integration +Version: %VERSION% + +Requires: harfbuzz gobject-2.0 glib-2.0 +Libs: -L${libdir} -lharfbuzz-gobject +Cflags: -I${includedir}/harfbuzz diff --git a/gfx/harfbuzz/src/harfbuzz-icu.pc.in b/gfx/harfbuzz/src/harfbuzz-icu.pc.in new file mode 100644 index 0000000000..949869a356 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-icu.pc.in @@ -0,0 +1,13 @@ +prefix=%prefix% +exec_prefix=%exec_prefix% +libdir=%libdir% +includedir=%includedir% + +Name: harfbuzz +Description: HarfBuzz text shaping library ICU integration +Version: %VERSION% + +Requires: harfbuzz +Requires.private: icu-uc +Libs: -L${libdir} -lharfbuzz-icu +Cflags: -I${includedir}/harfbuzz diff --git a/gfx/harfbuzz/src/harfbuzz-subset.cc b/gfx/harfbuzz/src/harfbuzz-subset.cc new file mode 100644 index 0000000000..c0e23b3eb8 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-subset.cc @@ -0,0 +1,62 @@ +#include "graph/gsubgpos-context.cc" +#include "hb-aat-layout.cc" +#include "hb-aat-map.cc" +#include "hb-blob.cc" +#include "hb-buffer-serialize.cc" +#include "hb-buffer-verify.cc" +#include "hb-buffer.cc" +#include "hb-common.cc" +#include "hb-draw.cc" +#include "hb-face-builder.cc" +#include "hb-face.cc" +#include "hb-fallback-shape.cc" +#include "hb-font.cc" +#include "hb-map.cc" +#include "hb-number.cc" +#include "hb-ot-cff1-table.cc" +#include "hb-ot-cff2-table.cc" +#include "hb-ot-color.cc" +#include "hb-ot-face.cc" +#include "hb-ot-font.cc" +#include "hb-ot-layout.cc" +#include "hb-ot-map.cc" +#include "hb-ot-math.cc" +#include "hb-ot-meta.cc" +#include "hb-ot-metrics.cc" +#include "hb-ot-name.cc" +#include "hb-ot-shape-fallback.cc" +#include "hb-ot-shape-normalize.cc" +#include "hb-ot-shape.cc" +#include "hb-ot-shaper-arabic.cc" +#include "hb-ot-shaper-default.cc" +#include "hb-ot-shaper-hangul.cc" +#include "hb-ot-shaper-hebrew.cc" +#include "hb-ot-shaper-indic-table.cc" +#include "hb-ot-shaper-indic.cc" +#include "hb-ot-shaper-khmer.cc" +#include "hb-ot-shaper-myanmar.cc" +#include "hb-ot-shaper-syllabic.cc" +#include "hb-ot-shaper-thai.cc" +#include "hb-ot-shaper-use.cc" +#include "hb-ot-shaper-vowel-constraints.cc" +#include "hb-ot-tag.cc" +#include "hb-ot-var.cc" +#include "hb-outline.cc" +#include "hb-paint-extents.cc" +#include "hb-paint.cc" +#include "hb-set.cc" +#include "hb-shape-plan.cc" +#include "hb-shape.cc" +#include "hb-shaper.cc" +#include "hb-static.cc" +#include "hb-style.cc" +#include "hb-subset-cff-common.cc" +#include "hb-subset-cff1.cc" +#include "hb-subset-cff2.cc" +#include "hb-subset-input.cc" +#include "hb-subset-instancer-solver.cc" +#include "hb-subset-plan.cc" +#include "hb-subset-repacker.cc" +#include "hb-subset.cc" +#include "hb-ucd.cc" +#include "hb-unicode.cc" diff --git a/gfx/harfbuzz/src/harfbuzz-subset.pc.in b/gfx/harfbuzz/src/harfbuzz-subset.pc.in new file mode 100644 index 0000000000..ca13c70ef3 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz-subset.pc.in @@ -0,0 +1,12 @@ +prefix=%prefix% +exec_prefix=%exec_prefix% +libdir=%libdir% +includedir=%includedir% + +Name: harfbuzz subsetter +Description: HarfBuzz font subsetter +Version: %VERSION% + +Requires: harfbuzz = %VERSION% +Libs: -L${libdir} -lharfbuzz-subset +Cflags: -I${includedir}/harfbuzz diff --git a/gfx/harfbuzz/src/harfbuzz.cc b/gfx/harfbuzz/src/harfbuzz.cc new file mode 100644 index 0000000000..d7e8a93f39 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz.cc @@ -0,0 +1,60 @@ +#include "hb-aat-layout.cc" +#include "hb-aat-map.cc" +#include "hb-blob.cc" +#include "hb-buffer-serialize.cc" +#include "hb-buffer-verify.cc" +#include "hb-buffer.cc" +#include "hb-common.cc" +#include "hb-coretext.cc" +#include "hb-directwrite.cc" +#include "hb-draw.cc" +#include "hb-face-builder.cc" +#include "hb-face.cc" +#include "hb-fallback-shape.cc" +#include "hb-font.cc" +#include "hb-ft.cc" +#include "hb-gdi.cc" +#include "hb-glib.cc" +#include "hb-graphite2.cc" +#include "hb-map.cc" +#include "hb-number.cc" +#include "hb-ot-cff1-table.cc" +#include "hb-ot-cff2-table.cc" +#include "hb-ot-color.cc" +#include "hb-ot-face.cc" +#include "hb-ot-font.cc" +#include "hb-ot-layout.cc" +#include "hb-ot-map.cc" +#include "hb-ot-math.cc" +#include "hb-ot-meta.cc" +#include "hb-ot-metrics.cc" +#include "hb-ot-name.cc" +#include "hb-ot-shape-fallback.cc" +#include "hb-ot-shape-normalize.cc" +#include "hb-ot-shape.cc" +#include "hb-ot-shaper-arabic.cc" +#include "hb-ot-shaper-default.cc" +#include "hb-ot-shaper-hangul.cc" +#include "hb-ot-shaper-hebrew.cc" +#include "hb-ot-shaper-indic-table.cc" +#include "hb-ot-shaper-indic.cc" +#include "hb-ot-shaper-khmer.cc" +#include "hb-ot-shaper-myanmar.cc" +#include "hb-ot-shaper-syllabic.cc" +#include "hb-ot-shaper-thai.cc" +#include "hb-ot-shaper-use.cc" +#include "hb-ot-shaper-vowel-constraints.cc" +#include "hb-ot-tag.cc" +#include "hb-ot-var.cc" +#include "hb-outline.cc" +#include "hb-paint-extents.cc" +#include "hb-paint.cc" +#include "hb-set.cc" +#include "hb-shape-plan.cc" +#include "hb-shape.cc" +#include "hb-shaper.cc" +#include "hb-static.cc" +#include "hb-style.cc" +#include "hb-ucd.cc" +#include "hb-unicode.cc" +#include "hb-uniscribe.cc" diff --git a/gfx/harfbuzz/src/harfbuzz.pc.in b/gfx/harfbuzz/src/harfbuzz.pc.in new file mode 100644 index 0000000000..661251c2d4 --- /dev/null +++ b/gfx/harfbuzz/src/harfbuzz.pc.in @@ -0,0 +1,13 @@ +prefix=%prefix% +exec_prefix=%exec_prefix% +libdir=%libdir% +includedir=%includedir% + +Name: harfbuzz +Description: HarfBuzz text shaping library +Version: %VERSION% + +Libs: -L${libdir} -lharfbuzz +Libs.private: -lm %libs_private% +Requires.private: %requires_private% +Cflags: -I${includedir}/harfbuzz diff --git a/gfx/harfbuzz/src/hb-aat-layout-ankr-table.hh b/gfx/harfbuzz/src/hb-aat-layout-ankr-table.hh new file mode 100644 index 0000000000..63fac84524 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-ankr-table.hh @@ -0,0 +1,98 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LAYOUT_ANKR_TABLE_HH +#define HB_AAT_LAYOUT_ANKR_TABLE_HH + +#include "hb-aat-layout-common.hh" + +/* + * ankr -- Anchor Point + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ankr.html + */ +#define HB_AAT_TAG_ankr HB_TAG('a','n','k','r') + + +namespace AAT { + +using namespace OT; + + +struct Anchor +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + FWORD xCoordinate; + FWORD yCoordinate; + public: + DEFINE_SIZE_STATIC (4); +}; + +typedef Array32Of GlyphAnchors; + +struct ankr +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_ankr; + + const Anchor &get_anchor (hb_codepoint_t glyph_id, + unsigned int i, + unsigned int num_glyphs) const + { + const NNOffset16To *offset = (this+lookupTable).get_value (glyph_id, num_glyphs); + if (!offset) + return Null (Anchor); + const GlyphAnchors &anchors = &(this+anchorData) + *offset; + return anchors[i]; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + version == 0 && + c->check_range (this, anchorData) && + lookupTable.sanitize (c, this, &(this+anchorData)))); + } + + protected: + HBUINT16 version; /* Version number (set to zero) */ + HBUINT16 flags; /* Flags (currently unused; set to zero) */ + Offset32To>> + lookupTable; /* Offset to the table's lookup table */ + NNOffset32To + anchorData; /* Offset to the glyph data table */ + + public: + DEFINE_SIZE_STATIC (12); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_ANKR_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-bsln-table.hh b/gfx/harfbuzz/src/hb-aat-layout-bsln-table.hh new file mode 100644 index 0000000000..bf12d2e699 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-bsln-table.hh @@ -0,0 +1,158 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LAYOUT_BSLN_TABLE_HH +#define HB_AAT_LAYOUT_BSLN_TABLE_HH + +#include "hb-aat-layout-common.hh" + +/* + * bsln -- Baseline + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bsln.html + */ +#define HB_AAT_TAG_bsln HB_TAG('b','s','l','n') + + +namespace AAT { + + +struct BaselineTableFormat0Part +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + // Roman, Ideographic centered, Ideographic low, Hanging and Math + // are the default defined ones, but any other maybe accessed also. + HBINT16 deltas[32]; /* These are the FUnit distance deltas from + * the font's natural baseline to the other + * baselines used in the font. */ + public: + DEFINE_SIZE_STATIC (64); +}; + +struct BaselineTableFormat1Part +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + lookupTable.sanitize (c))); + } + + protected: + HBINT16 deltas[32]; /* ditto */ + Lookup + lookupTable; /* Lookup table that maps glyphs to their + * baseline values. */ + public: + DEFINE_SIZE_MIN (66); +}; + +struct BaselineTableFormat2Part +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBGlyphID16 stdGlyph; /* The specific glyph index number in this + * font that is used to set the baseline values. + * This is the standard glyph. + * This glyph must contain a set of control points + * (whose numbers are contained in the ctlPoints field) + * that are used to determine baseline distances. */ + HBUINT16 ctlPoints[32]; /* Set of control point numbers, + * associated with the standard glyph. + * A value of 0xFFFF means there is no corresponding + * control point in the standard glyph. */ + public: + DEFINE_SIZE_STATIC (66); +}; + +struct BaselineTableFormat3Part +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c))); + } + + protected: + HBGlyphID16 stdGlyph; /* ditto */ + HBUINT16 ctlPoints[32]; /* ditto */ + Lookup + lookupTable; /* Lookup table that maps glyphs to their + * baseline values. */ + public: + DEFINE_SIZE_MIN (68); +}; + +struct bsln +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_bsln; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!(c->check_struct (this) && defaultBaseline < 32))) + return_trace (false); + + switch (format) + { + case 0: return_trace (parts.format0.sanitize (c)); + case 1: return_trace (parts.format1.sanitize (c)); + case 2: return_trace (parts.format2.sanitize (c)); + case 3: return_trace (parts.format3.sanitize (c)); + default:return_trace (true); + } + } + + protected: + FixedVersion<>version; /* Version number of the Baseline table. */ + HBUINT16 format; /* Format of the baseline table. Only one baseline + * format may be selected for the font. */ + HBUINT16 defaultBaseline;/* Default baseline value for all glyphs. + * This value can be from 0 through 31. */ + union { + // Distance-Based Formats + BaselineTableFormat0Part format0; + BaselineTableFormat1Part format1; + // Control Point-based Formats + BaselineTableFormat2Part format2; + BaselineTableFormat3Part format3; + } parts; + public: + DEFINE_SIZE_MIN (8); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_BSLN_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-common.hh b/gfx/harfbuzz/src/hb-aat-layout-common.hh new file mode 100644 index 0000000000..7d53c354da --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-common.hh @@ -0,0 +1,919 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_LAYOUT_COMMON_HH +#define HB_AAT_LAYOUT_COMMON_HH + +#include "hb-aat-layout.hh" +#include "hb-aat-map.hh" +#include "hb-open-type.hh" + +namespace OT { +struct GDEF; +}; + +namespace AAT { + +using namespace OT; + + +struct ankr; + +struct hb_aat_apply_context_t : + hb_dispatch_context_t +{ + const char *get_name () { return "APPLY"; } + template + return_t dispatch (const T &obj) { return obj.apply (this); } + static return_t default_return_value () { return false; } + bool stop_sublookup_iteration (return_t r) const { return r; } + + const hb_ot_shape_plan_t *plan; + hb_font_t *font; + hb_face_t *face; + hb_buffer_t *buffer; + hb_sanitize_context_t sanitizer; + const ankr *ankr_table; + const OT::GDEF *gdef_table; + const hb_sorted_vector_t *range_flags = nullptr; + hb_mask_t subtable_flags = 0; + + /* Unused. For debug tracing only. */ + unsigned int lookup_index; + + HB_INTERNAL hb_aat_apply_context_t (const hb_ot_shape_plan_t *plan_, + hb_font_t *font_, + hb_buffer_t *buffer_, + hb_blob_t *blob = const_cast (&Null (hb_blob_t))); + + HB_INTERNAL ~hb_aat_apply_context_t (); + + HB_INTERNAL void set_ankr_table (const AAT::ankr *ankr_table_); + + void set_lookup_index (unsigned int i) { lookup_index = i; } +}; + + +/* + * Lookup Table + */ + +template struct Lookup; + +template +struct LookupFormat0 +{ + friend struct Lookup; + + private: + const T* get_value (hb_codepoint_t glyph_id, unsigned int num_glyphs) const + { + if (unlikely (glyph_id >= num_glyphs)) return nullptr; + return &arrayZ[glyph_id]; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (arrayZ.sanitize (c, c->get_num_glyphs ())); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (arrayZ.sanitize (c, c->get_num_glyphs (), base)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 0 */ + UnsizedArrayOf + arrayZ; /* Array of lookup values, indexed by glyph index. */ + public: + DEFINE_SIZE_UNBOUNDED (2); +}; + + +template +struct LookupSegmentSingle +{ + static constexpr unsigned TerminationWordCount = 2u; + + int cmp (hb_codepoint_t g) const + { return g < first ? -1 : g <= last ? 0 : +1 ; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c, base)); + } + + HBGlyphID16 last; /* Last GlyphID in this segment */ + HBGlyphID16 first; /* First GlyphID in this segment */ + T value; /* The lookup value (only one) */ + public: + DEFINE_SIZE_STATIC (4 + T::static_size); +}; + +template +struct LookupFormat2 +{ + friend struct Lookup; + + private: + const T* get_value (hb_codepoint_t glyph_id) const + { + const LookupSegmentSingle *v = segments.bsearch (glyph_id); + return v ? &v->value : nullptr; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (segments.sanitize (c)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (segments.sanitize (c, base)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + VarSizedBinSearchArrayOf> + segments; /* The actual segments. These must already be sorted, + * according to the first word in each one (the last + * glyph in each segment). */ + public: + DEFINE_SIZE_ARRAY (8, segments); +}; + +template +struct LookupSegmentArray +{ + static constexpr unsigned TerminationWordCount = 2u; + + const T* get_value (hb_codepoint_t glyph_id, const void *base) const + { + return first <= glyph_id && glyph_id <= last ? &(base+valuesZ)[glyph_id - first] : nullptr; + } + + int cmp (hb_codepoint_t g) const + { return g < first ? -1 : g <= last ? 0 : +1; } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + first <= last && + valuesZ.sanitize (c, base, last - first + 1)); + } + template + bool sanitize (hb_sanitize_context_t *c, const void *base, Ts&&... ds) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + first <= last && + valuesZ.sanitize (c, base, last - first + 1, std::forward (ds)...)); + } + + HBGlyphID16 last; /* Last GlyphID in this segment */ + HBGlyphID16 first; /* First GlyphID in this segment */ + NNOffset16To> + valuesZ; /* A 16-bit offset from the start of + * the table to the data. */ + public: + DEFINE_SIZE_STATIC (6); +}; + +template +struct LookupFormat4 +{ + friend struct Lookup; + + private: + const T* get_value (hb_codepoint_t glyph_id) const + { + const LookupSegmentArray *v = segments.bsearch (glyph_id); + return v ? v->get_value (glyph_id, this) : nullptr; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (segments.sanitize (c, this)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (segments.sanitize (c, this, base)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 4 */ + VarSizedBinSearchArrayOf> + segments; /* The actual segments. These must already be sorted, + * according to the first word in each one (the last + * glyph in each segment). */ + public: + DEFINE_SIZE_ARRAY (8, segments); +}; + +template +struct LookupSingle +{ + static constexpr unsigned TerminationWordCount = 1u; + + int cmp (hb_codepoint_t g) const { return glyph.cmp (g); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c, base)); + } + + HBGlyphID16 glyph; /* Last GlyphID */ + T value; /* The lookup value (only one) */ + public: + DEFINE_SIZE_STATIC (2 + T::static_size); +}; + +template +struct LookupFormat6 +{ + friend struct Lookup; + + private: + const T* get_value (hb_codepoint_t glyph_id) const + { + const LookupSingle *v = entries.bsearch (glyph_id); + return v ? &v->value : nullptr; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (entries.sanitize (c)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (entries.sanitize (c, base)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 6 */ + VarSizedBinSearchArrayOf> + entries; /* The actual entries, sorted by glyph index. */ + public: + DEFINE_SIZE_ARRAY (8, entries); +}; + +template +struct LookupFormat8 +{ + friend struct Lookup; + + private: + const T* get_value (hb_codepoint_t glyph_id) const + { + return firstGlyph <= glyph_id && glyph_id - firstGlyph < glyphCount ? + &valueArrayZ[glyph_id - firstGlyph] : nullptr; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && valueArrayZ.sanitize (c, glyphCount)); + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && valueArrayZ.sanitize (c, glyphCount, base)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 8 */ + HBGlyphID16 firstGlyph; /* First glyph index included in the trimmed array. */ + HBUINT16 glyphCount; /* Total number of glyphs (equivalent to the last + * glyph minus the value of firstGlyph plus 1). */ + UnsizedArrayOf + valueArrayZ; /* The lookup values (indexed by the glyph index + * minus the value of firstGlyph). */ + public: + DEFINE_SIZE_ARRAY (6, valueArrayZ); +}; + +template +struct LookupFormat10 +{ + friend struct Lookup; + + private: + const typename T::type get_value_or_null (hb_codepoint_t glyph_id) const + { + if (!(firstGlyph <= glyph_id && glyph_id - firstGlyph < glyphCount)) + return Null (T); + + const HBUINT8 *p = &valueArrayZ[(glyph_id - firstGlyph) * valueSize]; + + unsigned int v = 0; + unsigned int count = valueSize; + for (unsigned int i = 0; i < count; i++) + v = (v << 8) | *p++; + + return v; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + valueSize <= 4 && + valueArrayZ.sanitize (c, glyphCount * valueSize)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 8 */ + HBUINT16 valueSize; /* Byte size of each value. */ + HBGlyphID16 firstGlyph; /* First glyph index included in the trimmed array. */ + HBUINT16 glyphCount; /* Total number of glyphs (equivalent to the last + * glyph minus the value of firstGlyph plus 1). */ + UnsizedArrayOf + valueArrayZ; /* The lookup values (indexed by the glyph index + * minus the value of firstGlyph). */ + public: + DEFINE_SIZE_ARRAY (8, valueArrayZ); +}; + +template +struct Lookup +{ + const T* get_value (hb_codepoint_t glyph_id, unsigned int num_glyphs) const + { + switch (u.format) { + case 0: return u.format0.get_value (glyph_id, num_glyphs); + case 2: return u.format2.get_value (glyph_id); + case 4: return u.format4.get_value (glyph_id); + case 6: return u.format6.get_value (glyph_id); + case 8: return u.format8.get_value (glyph_id); + default:return nullptr; + } + } + + const typename T::type get_value_or_null (hb_codepoint_t glyph_id, unsigned int num_glyphs) const + { + switch (u.format) { + /* Format 10 cannot return a pointer. */ + case 10: return u.format10.get_value_or_null (glyph_id); + default: + const T *v = get_value (glyph_id, num_glyphs); + return v ? *v : Null (T); + } + } + + typename T::type get_class (hb_codepoint_t glyph_id, + unsigned int num_glyphs, + unsigned int outOfRange) const + { + const T *v = get_value (glyph_id, num_glyphs); + return v ? *v : outOfRange; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 0: return_trace (u.format0.sanitize (c)); + case 2: return_trace (u.format2.sanitize (c)); + case 4: return_trace (u.format4.sanitize (c)); + case 6: return_trace (u.format6.sanitize (c)); + case 8: return_trace (u.format8.sanitize (c)); + case 10: return_trace (u.format10.sanitize (c)); + default:return_trace (true); + } + } + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 0: return_trace (u.format0.sanitize (c, base)); + case 2: return_trace (u.format2.sanitize (c, base)); + case 4: return_trace (u.format4.sanitize (c, base)); + case 6: return_trace (u.format6.sanitize (c, base)); + case 8: return_trace (u.format8.sanitize (c, base)); + case 10: return_trace (false); /* We don't support format10 here currently. */ + default:return_trace (true); + } + } + + protected: + union { + HBUINT16 format; /* Format identifier */ + LookupFormat0 format0; + LookupFormat2 format2; + LookupFormat4 format4; + LookupFormat6 format6; + LookupFormat8 format8; + LookupFormat10 format10; + } u; + public: + DEFINE_SIZE_UNION (2, format); +}; +DECLARE_NULL_NAMESPACE_BYTES_TEMPLATE1 (AAT, Lookup, 2); + +enum { DELETED_GLYPH = 0xFFFF }; + +/* + * (Extended) State Table + */ + +template +struct Entry +{ + // This does seem like it's ever called. + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* Note, we don't recurse-sanitize data because we don't access it. + * That said, in our DEFINE_SIZE_STATIC we access T::static_size, + * which ensures that data has a simple sanitize(). To be determined + * if I need to remove that as well. + * + * HOWEVER! Because we are a template, our DEFINE_SIZE_STATIC + * assertion wouldn't be checked, hence the line below. */ + static_assert (T::static_size, ""); + + return_trace (c->check_struct (this)); + } + + public: + HBUINT16 newState; /* Byte offset from beginning of state table + * to the new state. Really?!?! Or just state + * number? The latter in morx for sure. */ + HBUINT16 flags; /* Table specific. */ + T data; /* Optional offsets to per-glyph tables. */ + public: + DEFINE_SIZE_STATIC (4 + T::static_size); +}; + +template <> +struct Entry +{ + // This does seem like it's ever called. + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT16 newState; /* Byte offset from beginning of state table to the new state. */ + HBUINT16 flags; /* Table specific. */ + public: + DEFINE_SIZE_STATIC (4); +}; + +template +struct StateTable +{ + typedef typename Types::HBUINT HBUINT; + typedef typename Types::HBUSHORT HBUSHORT; + typedef typename Types::ClassTypeNarrow ClassType; + + enum State + { + STATE_START_OF_TEXT = 0, + STATE_START_OF_LINE = 1, + }; + enum Class + { + CLASS_END_OF_TEXT = 0, + CLASS_OUT_OF_BOUNDS = 1, + CLASS_DELETED_GLYPH = 2, + CLASS_END_OF_LINE = 3, + }; + + int new_state (unsigned int newState) const + { return Types::extended ? newState : ((int) newState - (int) stateArrayTable) / (int) nClasses; } + + unsigned int get_class (hb_codepoint_t glyph_id, unsigned int num_glyphs) const + { + if (unlikely (glyph_id == DELETED_GLYPH)) return CLASS_DELETED_GLYPH; + return (this+classTable).get_class (glyph_id, num_glyphs, 1); + } + + const Entry *get_entries () const + { return (this+entryTable).arrayZ; } + + const Entry &get_entry (int state, unsigned int klass) const + { + if (unlikely (klass >= nClasses)) + klass = StateTable::CLASS_OUT_OF_BOUNDS; + + const HBUSHORT *states = (this+stateArrayTable).arrayZ; + const Entry *entries = (this+entryTable).arrayZ; + + unsigned int entry = states[state * nClasses + klass]; + DEBUG_MSG (APPLY, nullptr, "e%u", entry); + + return entries[entry]; + } + + bool sanitize (hb_sanitize_context_t *c, + unsigned int *num_entries_out = nullptr) const + { + TRACE_SANITIZE (this); + if (unlikely (!(c->check_struct (this) && + nClasses >= 4 /* Ensure pre-defined classes fit. */ && + classTable.sanitize (c, this)))) return_trace (false); + + const HBUSHORT *states = (this+stateArrayTable).arrayZ; + const Entry *entries = (this+entryTable).arrayZ; + + unsigned int num_classes = nClasses; + if (unlikely (hb_unsigned_mul_overflows (num_classes, states[0].static_size))) + return_trace (false); + unsigned int row_stride = num_classes * states[0].static_size; + + /* Apple 'kern' table has this peculiarity: + * + * "Because the stateTableOffset in the state table header is (strictly + * speaking) redundant, some 'kern' tables use it to record an initial + * state where that should not be StartOfText. To determine if this is + * done, calculate what the stateTableOffset should be. If it's different + * from the actual stateTableOffset, use it as the initial state." + * + * We implement this by calling the initial state zero, but allow *negative* + * states if the start state indeed was not the first state. Since the code + * is shared, this will also apply to 'mort' table. The 'kerx' / 'morx' + * tables are not affected since those address states by index, not offset. + */ + + int min_state = 0; + int max_state = 0; + unsigned int num_entries = 0; + + int state_pos = 0; + int state_neg = 0; + unsigned int entry = 0; + while (min_state < state_neg || state_pos <= max_state) + { + if (min_state < state_neg) + { + /* Negative states. */ + if (unlikely (hb_unsigned_mul_overflows (min_state, num_classes))) + return_trace (false); + if (unlikely (!c->check_range (&states[min_state * num_classes], + -min_state, + row_stride))) + return_trace (false); + if ((c->max_ops -= state_neg - min_state) <= 0) + return_trace (false); + { /* Sweep new states. */ + const HBUSHORT *stop = &states[min_state * num_classes]; + if (unlikely (stop > states)) + return_trace (false); + for (const HBUSHORT *p = states; stop < p; p--) + num_entries = hb_max (num_entries, *(p - 1) + 1u); + state_neg = min_state; + } + } + + if (state_pos <= max_state) + { + /* Positive states. */ + if (unlikely (!c->check_range (states, + max_state + 1, + row_stride))) + return_trace (false); + if ((c->max_ops -= max_state - state_pos + 1) <= 0) + return_trace (false); + { /* Sweep new states. */ + if (unlikely (hb_unsigned_mul_overflows ((max_state + 1), num_classes))) + return_trace (false); + const HBUSHORT *stop = &states[(max_state + 1) * num_classes]; + if (unlikely (stop < states)) + return_trace (false); + for (const HBUSHORT *p = &states[state_pos * num_classes]; p < stop; p++) + num_entries = hb_max (num_entries, *p + 1u); + state_pos = max_state + 1; + } + } + + if (unlikely (!c->check_array (entries, num_entries))) + return_trace (false); + if ((c->max_ops -= num_entries - entry) <= 0) + return_trace (false); + { /* Sweep new entries. */ + const Entry *stop = &entries[num_entries]; + for (const Entry *p = &entries[entry]; p < stop; p++) + { + int newState = new_state (p->newState); + min_state = hb_min (min_state, newState); + max_state = hb_max (max_state, newState); + } + entry = num_entries; + } + } + + if (num_entries_out) + *num_entries_out = num_entries; + + return_trace (true); + } + + protected: + HBUINT nClasses; /* Number of classes, which is the number of indices + * in a single line in the state array. */ + NNOffsetTo + classTable; /* Offset to the class table. */ + NNOffsetTo, HBUINT> + stateArrayTable;/* Offset to the state array. */ + NNOffsetTo>, HBUINT> + entryTable; /* Offset to the entry array. */ + + public: + DEFINE_SIZE_STATIC (4 * sizeof (HBUINT)); +}; + +template +struct ClassTable +{ + unsigned int get_class (hb_codepoint_t glyph_id, unsigned int outOfRange) const + { + unsigned int i = glyph_id - firstGlyph; + return i >= classArray.len ? outOfRange : classArray.arrayZ[i]; + } + unsigned int get_class (hb_codepoint_t glyph_id, + unsigned int num_glyphs HB_UNUSED, + unsigned int outOfRange) const + { + return get_class (glyph_id, outOfRange); + } + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && classArray.sanitize (c)); + } + protected: + HBGlyphID16 firstGlyph; /* First glyph index included in the trimmed array. */ + Array16Of classArray; /* The class codes (indexed by glyph index minus + * firstGlyph). */ + public: + DEFINE_SIZE_ARRAY (4, classArray); +}; + +struct ObsoleteTypes +{ + static constexpr bool extended = false; + typedef HBUINT16 HBUINT; + typedef HBUINT8 HBUSHORT; + typedef ClassTable ClassTypeNarrow; + typedef ClassTable ClassTypeWide; + + template + static unsigned int offsetToIndex (unsigned int offset, + const void *base, + const T *array) + { + /* https://github.com/harfbuzz/harfbuzz/issues/3483 */ + /* If offset is less than base, return an offset that would + * result in an address half a 32bit address-space away, + * to make sure sanitize fails even on 32bit builds. */ + if (unlikely (offset < unsigned ((const char *) array - (const char *) base))) + return INT_MAX / T::static_size; + + /* https://github.com/harfbuzz/harfbuzz/issues/2816 */ + return (offset - unsigned ((const char *) array - (const char *) base)) / T::static_size; + } + template + static unsigned int byteOffsetToIndex (unsigned int offset, + const void *base, + const T *array) + { + return offsetToIndex (offset, base, array); + } + template + static unsigned int wordOffsetToIndex (unsigned int offset, + const void *base, + const T *array) + { + return offsetToIndex (2 * offset, base, array); + } +}; +struct ExtendedTypes +{ + static constexpr bool extended = true; + typedef HBUINT32 HBUINT; + typedef HBUINT16 HBUSHORT; + typedef Lookup ClassTypeNarrow; + typedef Lookup ClassTypeWide; + + template + static unsigned int offsetToIndex (unsigned int offset, + const void *base HB_UNUSED, + const T *array HB_UNUSED) + { + return offset; + } + template + static unsigned int byteOffsetToIndex (unsigned int offset, + const void *base HB_UNUSED, + const T *array HB_UNUSED) + { + return offset / 2; + } + template + static unsigned int wordOffsetToIndex (unsigned int offset, + const void *base HB_UNUSED, + const T *array HB_UNUSED) + { + return offset; + } +}; + +template +struct StateTableDriver +{ + using StateTableT = StateTable; + using EntryT = Entry; + + StateTableDriver (const StateTableT &machine_, + hb_buffer_t *buffer_, + hb_face_t *face_) : + machine (machine_), + buffer (buffer_), + num_glyphs (face_->get_num_glyphs ()) {} + + template + void drive (context_t *c, hb_aat_apply_context_t *ac) + { + if (!c->in_place) + buffer->clear_output (); + + int state = StateTableT::STATE_START_OF_TEXT; + // If there's only one range, we already checked the flag. + auto *last_range = ac->range_flags && (ac->range_flags->length > 1) ? &(*ac->range_flags)[0] : nullptr; + for (buffer->idx = 0; buffer->successful;) + { + /* This block is copied in NoncontextualSubtable::apply. Keep in sync. */ + if (last_range) + { + auto *range = last_range; + if (buffer->idx < buffer->len) + { + unsigned cluster = buffer->cur().cluster; + while (cluster < range->cluster_first) + range--; + while (cluster > range->cluster_last) + range++; + + + last_range = range; + } + if (!(range->flags & ac->subtable_flags)) + { + if (buffer->idx == buffer->len || unlikely (!buffer->successful)) + break; + + state = StateTableT::STATE_START_OF_TEXT; + (void) buffer->next_glyph (); + continue; + } + } + + unsigned int klass = buffer->idx < buffer->len ? + machine.get_class (buffer->cur().codepoint, num_glyphs) : + (unsigned) StateTableT::CLASS_END_OF_TEXT; + DEBUG_MSG (APPLY, nullptr, "c%u at %u", klass, buffer->idx); + const EntryT &entry = machine.get_entry (state, klass); + const int next_state = machine.new_state (entry.newState); + + /* Conditions under which it's guaranteed safe-to-break before current glyph: + * + * 1. There was no action in this transition; and + * + * 2. If we break before current glyph, the results will be the same. That + * is guaranteed if: + * + * 2a. We were already in start-of-text state; or + * + * 2b. We are epsilon-transitioning to start-of-text state; or + * + * 2c. Starting from start-of-text state seeing current glyph: + * + * 2c'. There won't be any actions; and + * + * 2c". We would end up in the same state that we were going to end up + * in now, including whether epsilon-transitioning. + * + * and + * + * 3. If we break before current glyph, there won't be any end-of-text action + * after previous glyph. + * + * This triples the transitions we need to look up, but is worth returning + * granular unsafe-to-break results. See eg.: + * + * https://github.com/harfbuzz/harfbuzz/issues/2860 + */ + const EntryT *wouldbe_entry; + bool safe_to_break = + /* 1. */ + !c->is_actionable (this, entry) + && + /* 2. */ + ( + /* 2a. */ + state == StateTableT::STATE_START_OF_TEXT + || + /* 2b. */ + ( + (entry.flags & context_t::DontAdvance) && + next_state == StateTableT::STATE_START_OF_TEXT + ) + || + /* 2c. */ + ( + wouldbe_entry = &machine.get_entry (StateTableT::STATE_START_OF_TEXT, klass) + , + /* 2c'. */ + !c->is_actionable (this, *wouldbe_entry) + && + /* 2c". */ + ( + next_state == machine.new_state (wouldbe_entry->newState) + && + (entry.flags & context_t::DontAdvance) == (wouldbe_entry->flags & context_t::DontAdvance) + ) + ) + ) + && + /* 3. */ + !c->is_actionable (this, machine.get_entry (state, StateTableT::CLASS_END_OF_TEXT)) + ; + + if (!safe_to_break && buffer->backtrack_len () && buffer->idx < buffer->len) + buffer->unsafe_to_break_from_outbuffer (buffer->backtrack_len () - 1, buffer->idx + 1); + + c->transition (this, entry); + + state = next_state; + DEBUG_MSG (APPLY, nullptr, "s%d", state); + + if (buffer->idx == buffer->len || unlikely (!buffer->successful)) + break; + + if (!(entry.flags & context_t::DontAdvance) || buffer->max_ops-- <= 0) + (void) buffer->next_glyph (); + } + + if (!c->in_place) + buffer->sync (); + } + + public: + const StateTableT &machine; + hb_buffer_t *buffer; + unsigned int num_glyphs; +}; + + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_COMMON_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-feat-table.hh b/gfx/harfbuzz/src/hb-aat-layout-feat-table.hh new file mode 100644 index 0000000000..815a1fd2aa --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-feat-table.hh @@ -0,0 +1,222 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LAYOUT_FEAT_TABLE_HH +#define HB_AAT_LAYOUT_FEAT_TABLE_HH + +#include "hb-aat-layout-common.hh" + +/* + * feat -- Feature Name + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6feat.html + */ +#define HB_AAT_TAG_feat HB_TAG('f','e','a','t') + + +namespace AAT { + + +struct SettingName +{ + friend struct FeatureName; + + int cmp (hb_aat_layout_feature_selector_t key) const + { return (int) key - (int) setting; } + + hb_aat_layout_feature_selector_t get_selector () const + { return (hb_aat_layout_feature_selector_t) (unsigned) setting; } + + hb_aat_layout_feature_selector_info_t get_info (hb_aat_layout_feature_selector_t default_selector) const + { + return { + nameIndex, + (hb_aat_layout_feature_selector_t) (unsigned int) setting, + default_selector == HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID + ? (hb_aat_layout_feature_selector_t) (setting + 1) + : default_selector, + 0 + }; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 setting; /* The setting. */ + NameID nameIndex; /* The name table index for the setting's name. */ + public: + DEFINE_SIZE_STATIC (4); +}; +DECLARE_NULL_NAMESPACE_BYTES (AAT, SettingName); + +struct feat; + +struct FeatureName +{ + int cmp (hb_aat_layout_feature_type_t key) const + { return (int) key - (int) feature; } + + enum { + Exclusive = 0x8000, /* If set, the feature settings are mutually exclusive. */ + NotDefault = 0x4000, /* If clear, then the setting with an index of 0 in + * the setting name array for this feature should + * be taken as the default for the feature + * (if one is required). If set, then bits 0-15 of this + * featureFlags field contain the index of the setting + * which is to be taken as the default. */ + IndexMask = 0x00FF /* If bits 30 and 31 are set, then these sixteen bits + * indicate the index of the setting in the setting name + * array for this feature which should be taken + * as the default. */ + }; + + unsigned int get_selector_infos (unsigned int start_offset, + unsigned int *selectors_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */ + unsigned int *pdefault_index, /* OUT. May be NULL. */ + const void *base) const + { + hb_array_t< const SettingName> settings_table = (base+settingTableZ).as_array (nSettings); + + static_assert (Index::NOT_FOUND_INDEX == HB_AAT_LAYOUT_NO_SELECTOR_INDEX, ""); + + hb_aat_layout_feature_selector_t default_selector = HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID; + unsigned int default_index = Index::NOT_FOUND_INDEX; + if (featureFlags & Exclusive) + { + default_index = (featureFlags & NotDefault) ? featureFlags & IndexMask : 0; + default_selector = settings_table[default_index].get_selector (); + } + if (pdefault_index) + *pdefault_index = default_index; + + if (selectors_count) + { + + settings_table.sub_array (start_offset, selectors_count) + | hb_map ([=] (const SettingName& setting) { return setting.get_info (default_selector); }) + | hb_sink (hb_array (selectors, *selectors_count)) + ; + } + return settings_table.length; + } + + hb_aat_layout_feature_type_t get_feature_type () const + { return (hb_aat_layout_feature_type_t) (unsigned int) feature; } + + hb_ot_name_id_t get_feature_name_id () const { return nameIndex; } + + bool is_exclusive () const { return featureFlags & Exclusive; } + + /* A FeatureName with no settings is meaningless */ + bool has_data () const { return nSettings; } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (base+settingTableZ).sanitize (c, nSettings))); + } + + protected: + HBUINT16 feature; /* Feature type. */ + HBUINT16 nSettings; /* The number of records in the setting name array. */ + NNOffset32To> + settingTableZ; /* Offset in bytes from the beginning of this table to + * this feature's setting name array. The actual type of + * record this offset refers to will depend on the + * exclusivity value, as described below. */ + HBUINT16 featureFlags; /* Single-bit flags associated with the feature type. */ + HBINT16 nameIndex; /* The name table index for the feature's name. + * This index has values greater than 255 and + * less than 32768. */ + public: + DEFINE_SIZE_STATIC (12); +}; + +struct feat +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_feat; + + bool has_data () const { return version.to_int (); } + + unsigned int get_feature_types (unsigned int start_offset, + unsigned int *count, + hb_aat_layout_feature_type_t *features) const + { + if (count) + { + + namesZ.as_array (featureNameCount).sub_array (start_offset, count) + | hb_map (&FeatureName::get_feature_type) + | hb_sink (hb_array (features, *count)) + ; + } + return featureNameCount; + } + + bool exposes_feature (hb_aat_layout_feature_type_t feature_type) const + { return get_feature (feature_type).has_data (); } + + const FeatureName& get_feature (hb_aat_layout_feature_type_t feature_type) const + { return namesZ.bsearch (featureNameCount, feature_type); } + + hb_ot_name_id_t get_feature_name_id (hb_aat_layout_feature_type_t feature) const + { return get_feature (feature).get_feature_name_id (); } + + unsigned int get_selector_infos (hb_aat_layout_feature_type_t feature_type, + unsigned int start_offset, + unsigned int *selectors_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */ + unsigned int *default_index /* OUT. May be NULL. */) const + { + return get_feature (feature_type).get_selector_infos (start_offset, selectors_count, selectors, + default_index, this); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + version.major == 1 && + namesZ.sanitize (c, featureNameCount, this))); + } + + protected: + FixedVersion<>version; /* Version number of the feature name table + * (0x00010000 for the current version). */ + HBUINT16 featureNameCount; + /* The number of entries in the feature name array. */ + HBUINT16 reserved1; /* Reserved (set to zero). */ + HBUINT32 reserved2; /* Reserved (set to zero). */ + SortedUnsizedArrayOf + namesZ; /* The feature name array. */ + public: + DEFINE_SIZE_ARRAY (12, namesZ); +}; + +} /* namespace AAT */ + +#endif /* HB_AAT_LAYOUT_FEAT_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-just-table.hh b/gfx/harfbuzz/src/hb-aat-layout-just-table.hh new file mode 100644 index 0000000000..8fd3990f88 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-just-table.hh @@ -0,0 +1,417 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LAYOUT_JUST_TABLE_HH +#define HB_AAT_LAYOUT_JUST_TABLE_HH + +#include "hb-aat-layout-common.hh" +#include "hb-ot-layout.hh" +#include "hb-open-type.hh" + +#include "hb-aat-layout-morx-table.hh" + +/* + * just -- Justification + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6just.html + */ +#define HB_AAT_TAG_just HB_TAG('j','u','s','t') + + +namespace AAT { + +using namespace OT; + + +struct ActionSubrecordHeader +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT16 actionClass; /* The JustClass value associated with this + * ActionSubrecord. */ + HBUINT16 actionType; /* The type of postcompensation action. */ + HBUINT16 actionLength; /* Length of this ActionSubrecord record, which + * must be a multiple of 4. */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct DecompositionAction +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + ActionSubrecordHeader + header; + F16DOT16 lowerLimit; /* If the distance factor is less than this value, + * then the ligature is decomposed. */ + F16DOT16 upperLimit; /* If the distance factor is greater than this value, + * then the ligature is decomposed. */ + HBUINT16 order; /* Numerical order in which this ligature will + * be decomposed; you may want infrequent ligatures + * to decompose before more frequent ones. The ligatures + * on the line of text will decompose in increasing + * value of this field. */ + Array16Of + decomposedglyphs; + /* Number of 16-bit glyph indexes that follow; + * the ligature will be decomposed into these glyphs. + * + * Array of decomposed glyphs. */ + public: + DEFINE_SIZE_ARRAY (18, decomposedglyphs); +}; + +struct UnconditionalAddGlyphAction +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + ActionSubrecordHeader + header; + HBGlyphID16 addGlyph; /* Glyph that should be added if the distance factor + * is growing. */ + + public: + DEFINE_SIZE_STATIC (8); +}; + +struct ConditionalAddGlyphAction +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + ActionSubrecordHeader + header; + F16DOT16 substThreshold; /* Distance growth factor (in ems) at which + * this glyph is replaced and the growth factor + * recalculated. */ + HBGlyphID16 addGlyph; /* Glyph to be added as kashida. If this value is + * 0xFFFF, no extra glyph will be added. Note that + * generally when a glyph is added, justification + * will need to be redone. */ + HBGlyphID16 substGlyph; /* Glyph to be substituted for this glyph if the + * growth factor equals or exceeds the value of + * substThreshold. */ + public: + DEFINE_SIZE_STATIC (14); +}; + +struct DuctileGlyphAction +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + ActionSubrecordHeader + header; + HBUINT32 variationAxis; /* The 4-byte tag identifying the ductile axis. + * This would normally be 0x64756374 ('duct'), + * but you may use any axis the font contains. */ + F16DOT16 minimumLimit; /* The lowest value for the ductility axis that + * still yields an acceptable appearance. Normally + * this will be 1.0. */ + F16DOT16 noStretchValue; /* This is the default value that corresponds to + * no change in appearance. Normally, this will + * be 1.0. */ + F16DOT16 maximumLimit; /* The highest value for the ductility axis that + * still yields an acceptable appearance. */ + public: + DEFINE_SIZE_STATIC (22); +}; + +struct RepeatedAddGlyphAction +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + ActionSubrecordHeader + header; + HBUINT16 flags; /* Currently unused; set to 0. */ + HBGlyphID16 glyph; /* Glyph that should be added if the distance factor + * is growing. */ + public: + DEFINE_SIZE_STATIC (10); +}; + +struct ActionSubrecord +{ + unsigned int get_length () const { return u.header.actionLength; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + switch (u.header.actionType) + { + case 0: return_trace (u.decompositionAction.sanitize (c)); + case 1: return_trace (u.unconditionalAddGlyphAction.sanitize (c)); + case 2: return_trace (u.conditionalAddGlyphAction.sanitize (c)); + // case 3: return_trace (u.stretchGlyphAction.sanitize (c)); + case 4: return_trace (u.decompositionAction.sanitize (c)); + case 5: return_trace (u.decompositionAction.sanitize (c)); + default: return_trace (true); + } + } + + protected: + union { + ActionSubrecordHeader header; + DecompositionAction decompositionAction; + UnconditionalAddGlyphAction unconditionalAddGlyphAction; + ConditionalAddGlyphAction conditionalAddGlyphAction; + /* StretchGlyphAction stretchGlyphAction; -- Not supported by CoreText */ + DuctileGlyphAction ductileGlyphAction; + RepeatedAddGlyphAction repeatedAddGlyphAction; + } u; /* Data. The format of this data depends on + * the value of the actionType field. */ + public: + DEFINE_SIZE_UNION (6, header); +}; + +struct PostcompensationActionChain +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + unsigned int offset = min_size; + for (unsigned int i = 0; i < count; i++) + { + const ActionSubrecord& subrecord = StructAtOffset (this, offset); + if (unlikely (!subrecord.sanitize (c))) return_trace (false); + offset += subrecord.get_length (); + } + + return_trace (true); + } + + protected: + HBUINT32 count; + + public: + DEFINE_SIZE_STATIC (4); +}; + +struct JustWidthDeltaEntry +{ + enum Flags + { + Reserved1 =0xE000,/* Reserved. You should set these bits to zero. */ + UnlimiteGap =0x1000,/* The glyph can take unlimited gap. When this + * glyph participates in the justification process, + * it and any other glyphs on the line having this + * bit set absorb all the remaining gap. */ + Reserved2 =0x0FF0,/* Reserved. You should set these bits to zero. */ + Priority =0x000F /* The justification priority of the glyph. */ + }; + + enum Priority + { + Kashida = 0, /* Kashida priority. This is the highest priority + * during justification. */ + Whitespace = 1, /* Whitespace priority. Any whitespace glyphs (as + * identified in the glyph properties table) will + * get this priority. */ + InterCharacter = 2, /* Inter-character priority. Give this to any + * remaining glyphs. */ + NullPriority = 3 /* Null priority. You should set this priority for + * glyphs that only participate in justification + * after the above priorities. Normally all glyphs + * have one of the previous three values. If you + * don't want a glyph to participate in justification, + * and you don't want to set its factors to zero, + * you may instead assign it to the null priority. */ + }; + + protected: + F16DOT16 beforeGrowLimit;/* The ratio by which the advance width of the + * glyph is permitted to grow on the left or top side. */ + F16DOT16 beforeShrinkLimit; + /* The ratio by which the advance width of the + * glyph is permitted to shrink on the left or top side. */ + F16DOT16 afterGrowLimit; /* The ratio by which the advance width of the glyph + * is permitted to shrink on the left or top side. */ + F16DOT16 afterShrinkLimit; + /* The ratio by which the advance width of the glyph + * is at most permitted to shrink on the right or + * bottom side. */ + HBUINT16 growFlags; /* Flags controlling the grow case. */ + HBUINT16 shrinkFlags; /* Flags controlling the shrink case. */ + + public: + DEFINE_SIZE_STATIC (20); +}; + +struct WidthDeltaPair +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT32 justClass; /* The justification category associated + * with the wdRecord field. Only 7 bits of + * this field are used. (The other bits are + * used as padding to guarantee longword + * alignment of the following record). */ + JustWidthDeltaEntry + wdRecord; /* The actual width delta record. */ + + public: + DEFINE_SIZE_STATIC (24); +}; + +typedef OT::Array32Of WidthDeltaCluster; + +struct JustificationCategory +{ + typedef void EntryData; + + enum Flags + { + SetMark =0x8000,/* If set, make the current glyph the marked + * glyph. */ + DontAdvance =0x4000,/* If set, don't advance to the next glyph before + * going to the new state. */ + MarkCategory =0x3F80,/* The justification category for the marked + * glyph if nonzero. */ + CurrentCategory =0x007F /* The justification category for the current + * glyph if nonzero. */ + }; + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + morphHeader.sanitize (c) && + stHeader.sanitize (c))); + } + + protected: + ChainSubtable + morphHeader; /* Metamorphosis-style subtable header. */ + StateTable + stHeader; /* The justification insertion state table header */ + public: + DEFINE_SIZE_STATIC (30); +}; + +struct JustificationHeader +{ + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + justClassTable.sanitize (c, base, base) && + wdcTable.sanitize (c, base) && + pcTable.sanitize (c, base) && + lookupTable.sanitize (c, base))); + } + + protected: + Offset16To + justClassTable; /* Offset to the justification category state table. */ + Offset16To + wdcTable; /* Offset from start of justification table to start + * of the subtable containing the width delta factors + * for the glyphs in your font. + * + * The width delta clusters table. */ + Offset16To + pcTable; /* Offset from start of justification table to start + * of postcompensation subtable (set to zero if none). + * + * The postcompensation subtable, if present in the font. */ + Lookup> + lookupTable; /* Lookup table associating glyphs with width delta + * clusters. See the description of Width Delta Clusters + * table for details on how to interpret the lookup values. */ + + public: + DEFINE_SIZE_MIN (8); +}; + +struct just +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_just; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + + return_trace (likely (c->check_struct (this) && + version.major == 1 && + horizData.sanitize (c, this, this) && + vertData.sanitize (c, this, this))); + } + + protected: + FixedVersion<>version; /* Version of the justification table + * (0x00010000u for version 1.0). */ + HBUINT16 format; /* Format of the justification table (set to 0). */ + Offset16To + horizData; /* Byte offset from the start of the justification table + * to the header for tables that contain justification + * information for horizontal text. + * If you are not including this information, + * store 0. */ + Offset16To + vertData; /* ditto, vertical */ + + public: + DEFINE_SIZE_STATIC (10); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_JUST_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-kerx-table.hh b/gfx/harfbuzz/src/hb-aat-layout-kerx-table.hh new file mode 100644 index 0000000000..35d7c84c2b --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-kerx-table.hh @@ -0,0 +1,1001 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_LAYOUT_KERX_TABLE_HH +#define HB_AAT_LAYOUT_KERX_TABLE_HH + +#include "hb-kern.hh" +#include "hb-aat-layout-ankr-table.hh" + +/* + * kerx -- Extended Kerning + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6kerx.html + */ +#define HB_AAT_TAG_kerx HB_TAG('k','e','r','x') + + +namespace AAT { + +using namespace OT; + + +static inline int +kerxTupleKern (int value, + unsigned int tupleCount, + const void *base, + hb_aat_apply_context_t *c) +{ + if (likely (!tupleCount || !c)) return value; + + unsigned int offset = value; + const FWORD *pv = &StructAtOffset (base, offset); + if (unlikely (!c->sanitizer.check_array (pv, tupleCount))) return 0; + return *pv; +} + + +struct hb_glyph_pair_t +{ + hb_codepoint_t left; + hb_codepoint_t right; +}; + +struct KernPair +{ + int get_kerning () const { return value; } + + int cmp (const hb_glyph_pair_t &o) const + { + int ret = left.cmp (o.left); + if (ret) return ret; + return right.cmp (o.right); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBGlyphID16 left; + HBGlyphID16 right; + FWORD value; + public: + DEFINE_SIZE_STATIC (6); +}; + +template +struct KerxSubTableFormat0 +{ + int get_kerning (hb_codepoint_t left, hb_codepoint_t right, + hb_aat_apply_context_t *c = nullptr) const + { + hb_glyph_pair_t pair = {left, right}; + int v = pairs.bsearch (pair).get_kerning (); + return kerxTupleKern (v, header.tuple_count (), this, c); + } + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + if (!c->plan->requested_kerning) + return false; + + if (header.coverage & header.Backwards) + return false; + + accelerator_t accel (*this, c); + hb_kern_machine_t machine (accel, header.coverage & header.CrossStream); + machine.kern (c->font, c->buffer, c->plan->kern_mask); + + return_trace (true); + } + + struct accelerator_t + { + const KerxSubTableFormat0 &table; + hb_aat_apply_context_t *c; + + accelerator_t (const KerxSubTableFormat0 &table_, + hb_aat_apply_context_t *c_) : + table (table_), c (c_) {} + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { return table.get_kerning (left, right, c); } + }; + + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (pairs.sanitize (c))); + } + + protected: + KernSubTableHeader header; + BinSearchArrayOf + pairs; /* Sorted kern records. */ + public: + DEFINE_SIZE_ARRAY (KernSubTableHeader::static_size + 16, pairs); +}; + + +template +struct Format1Entry; + +template <> +struct Format1Entry +{ + enum Flags + { + Push = 0x8000, /* If set, push this glyph on the kerning stack. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph + * before going to the new state. */ + Reset = 0x2000, /* If set, reset the kerning data (clear the stack) */ + Reserved = 0x1FFF, /* Not used; set to 0. */ + }; + + struct EntryData + { + HBUINT16 kernActionIndex;/* Index into the kerning value array. If + * this index is 0xFFFF, then no kerning + * is to be performed. */ + public: + DEFINE_SIZE_STATIC (2); + }; + + static bool performAction (const Entry &entry) + { return entry.data.kernActionIndex != 0xFFFF; } + + static unsigned int kernActionIndex (const Entry &entry) + { return entry.data.kernActionIndex; } +}; +template <> +struct Format1Entry +{ + enum Flags + { + Push = 0x8000, /* If set, push this glyph on the kerning stack. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph + * before going to the new state. */ + Offset = 0x3FFF, /* Byte offset from beginning of subtable to the + * value table for the glyphs on the kerning stack. */ + + Reset = 0x0000, /* Not supported? */ + }; + + typedef void EntryData; + + static bool performAction (const Entry &entry) + { return entry.flags & Offset; } + + static unsigned int kernActionIndex (const Entry &entry) + { return entry.flags & Offset; } +}; + +template +struct KerxSubTableFormat1 +{ + typedef typename KernSubTableHeader::Types Types; + typedef typename Types::HBUINT HBUINT; + + typedef Format1Entry Format1EntryT; + typedef typename Format1EntryT::EntryData EntryData; + + struct driver_context_t + { + static constexpr bool in_place = true; + enum + { + DontAdvance = Format1EntryT::DontAdvance, + }; + + driver_context_t (const KerxSubTableFormat1 *table_, + hb_aat_apply_context_t *c_) : + c (c_), + table (table_), + /* Apparently the offset kernAction is from the beginning of the state-machine, + * similar to offsets in morx table, NOT from beginning of this table, like + * other subtables in kerx. Discovered via testing. */ + kernAction (&table->machine + table->kernAction), + depth (0), + crossStream (table->header.coverage & table->header.CrossStream) {} + + bool is_actionable (StateTableDriver *driver HB_UNUSED, + const Entry &entry) + { return Format1EntryT::performAction (entry); } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + unsigned int flags = entry.flags; + + if (flags & Format1EntryT::Reset) + depth = 0; + + if (flags & Format1EntryT::Push) + { + if (likely (depth < ARRAY_LENGTH (stack))) + stack[depth++] = buffer->idx; + else + depth = 0; /* Probably not what CoreText does, but better? */ + } + + if (Format1EntryT::performAction (entry) && depth) + { + unsigned int tuple_count = hb_max (1u, table->header.tuple_count ()); + + unsigned int kern_idx = Format1EntryT::kernActionIndex (entry); + kern_idx = Types::byteOffsetToIndex (kern_idx, &table->machine, kernAction.arrayZ); + const FWORD *actions = &kernAction[kern_idx]; + if (!c->sanitizer.check_array (actions, depth, tuple_count)) + { + depth = 0; + return; + } + + hb_mask_t kern_mask = c->plan->kern_mask; + + /* From Apple 'kern' spec: + * "Each pops one glyph from the kerning stack and applies the kerning value to it. + * The end of the list is marked by an odd value... */ + bool last = false; + while (!last && depth) + { + unsigned int idx = stack[--depth]; + int v = *actions; + actions += tuple_count; + if (idx >= buffer->len) continue; + + /* "The end of the list is marked by an odd value..." */ + last = v & 1; + v &= ~1; + + hb_glyph_position_t &o = buffer->pos[idx]; + + if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction)) + { + if (crossStream) + { + /* The following flag is undocumented in the spec, but described + * in the 'kern' table example. */ + if (v == -0x8000) + { + o.attach_type() = OT::Layout::GPOS_impl::ATTACH_TYPE_NONE; + o.attach_chain() = 0; + o.y_offset = 0; + } + else if (o.attach_type()) + { + o.y_offset += c->font->em_scale_y (v); + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + } + } + else if (buffer->info[idx].mask & kern_mask) + { + o.x_advance += c->font->em_scale_x (v); + o.x_offset += c->font->em_scale_x (v); + } + } + else + { + if (crossStream) + { + /* CoreText doesn't do crossStream kerning in vertical. We do. */ + if (v == -0x8000) + { + o.attach_type() = OT::Layout::GPOS_impl::ATTACH_TYPE_NONE; + o.attach_chain() = 0; + o.x_offset = 0; + } + else if (o.attach_type()) + { + o.x_offset += c->font->em_scale_x (v); + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + } + } + else if (buffer->info[idx].mask & kern_mask) + { + o.y_advance += c->font->em_scale_y (v); + o.y_offset += c->font->em_scale_y (v); + } + } + } + } + } + + private: + hb_aat_apply_context_t *c; + const KerxSubTableFormat1 *table; + const UnsizedArrayOf &kernAction; + unsigned int stack[8]; + unsigned int depth; + bool crossStream; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + if (!c->plan->requested_kerning && + !(header.coverage & header.CrossStream)) + return false; + + driver_context_t dc (this, c); + + StateTableDriver driver (machine, c->buffer, c->font->face); + driver.drive (&dc, c); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* The rest of array sanitizations are done at run-time. */ + return_trace (likely (c->check_struct (this) && + machine.sanitize (c))); + } + + protected: + KernSubTableHeader header; + StateTable machine; + NNOffsetTo, HBUINT> kernAction; + public: + DEFINE_SIZE_STATIC (KernSubTableHeader::static_size + 5 * sizeof (HBUINT)); +}; + +template +struct KerxSubTableFormat2 +{ + typedef typename KernSubTableHeader::Types Types; + typedef typename Types::HBUINT HBUINT; + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right, + hb_aat_apply_context_t *c) const + { + unsigned int num_glyphs = c->sanitizer.get_num_glyphs (); + unsigned int l = (this+leftClassTable).get_class (left, num_glyphs, 0); + unsigned int r = (this+rightClassTable).get_class (right, num_glyphs, 0); + + const UnsizedArrayOf &arrayZ = this+array; + unsigned int kern_idx = l + r; + kern_idx = Types::offsetToIndex (kern_idx, this, arrayZ.arrayZ); + const FWORD *v = &arrayZ[kern_idx]; + if (unlikely (!v->sanitize (&c->sanitizer))) return 0; + + return kerxTupleKern (*v, header.tuple_count (), this, c); + } + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + if (!c->plan->requested_kerning) + return false; + + if (header.coverage & header.Backwards) + return false; + + accelerator_t accel (*this, c); + hb_kern_machine_t machine (accel, header.coverage & header.CrossStream); + machine.kern (c->font, c->buffer, c->plan->kern_mask); + + return_trace (true); + } + + struct accelerator_t + { + const KerxSubTableFormat2 &table; + hb_aat_apply_context_t *c; + + accelerator_t (const KerxSubTableFormat2 &table_, + hb_aat_apply_context_t *c_) : + table (table_), c (c_) {} + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { return table.get_kerning (left, right, c); } + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + leftClassTable.sanitize (c, this) && + rightClassTable.sanitize (c, this) && + c->check_range (this, array))); + } + + protected: + KernSubTableHeader header; + HBUINT rowWidth; /* The width, in bytes, of a row in the table. */ + NNOffsetTo + leftClassTable; /* Offset from beginning of this subtable to + * left-hand class table. */ + NNOffsetTo + rightClassTable;/* Offset from beginning of this subtable to + * right-hand class table. */ + NNOffsetTo, HBUINT> + array; /* Offset from beginning of this subtable to + * the start of the kerning array. */ + public: + DEFINE_SIZE_STATIC (KernSubTableHeader::static_size + 4 * sizeof (HBUINT)); +}; + +template +struct KerxSubTableFormat4 +{ + typedef ExtendedTypes Types; + + struct EntryData + { + HBUINT16 ankrActionIndex;/* Either 0xFFFF (for no action) or the index of + * the action to perform. */ + public: + DEFINE_SIZE_STATIC (2); + }; + + struct driver_context_t + { + static constexpr bool in_place = true; + enum Flags + { + Mark = 0x8000, /* If set, remember this glyph as the marked glyph. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph before + * going to the new state. */ + Reserved = 0x3FFF, /* Not used; set to 0. */ + }; + + enum SubTableFlags + { + ActionType = 0xC0000000, /* A two-bit field containing the action type. */ + Unused = 0x3F000000, /* Unused - must be zero. */ + Offset = 0x00FFFFFF, /* Masks the offset in bytes from the beginning + * of the subtable to the beginning of the control + * point table. */ + }; + + driver_context_t (const KerxSubTableFormat4 *table, + hb_aat_apply_context_t *c_) : + c (c_), + action_type ((table->flags & ActionType) >> 30), + ankrData ((HBUINT16 *) ((const char *) &table->machine + (table->flags & Offset))), + mark_set (false), + mark (0) {} + + bool is_actionable (StateTableDriver *driver HB_UNUSED, + const Entry &entry) + { return entry.data.ankrActionIndex != 0xFFFF; } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + + if (mark_set && entry.data.ankrActionIndex != 0xFFFF && buffer->idx < buffer->len) + { + hb_glyph_position_t &o = buffer->cur_pos(); + switch (action_type) + { + case 0: /* Control Point Actions.*/ + { + /* Indexed into glyph outline. */ + /* Each action (record in ankrData) contains two 16-bit fields, so we must + double the ankrActionIndex to get the correct offset here. */ + const HBUINT16 *data = &ankrData[entry.data.ankrActionIndex * 2]; + if (!c->sanitizer.check_array (data, 2)) return; + unsigned int markControlPoint = *data++; + unsigned int currControlPoint = *data++; + hb_position_t markX = 0; + hb_position_t markY = 0; + hb_position_t currX = 0; + hb_position_t currY = 0; + if (!c->font->get_glyph_contour_point_for_origin (c->buffer->info[mark].codepoint, + markControlPoint, + HB_DIRECTION_LTR /*XXX*/, + &markX, &markY) || + !c->font->get_glyph_contour_point_for_origin (c->buffer->cur ().codepoint, + currControlPoint, + HB_DIRECTION_LTR /*XXX*/, + &currX, &currY)) + return; + + o.x_offset = markX - currX; + o.y_offset = markY - currY; + } + break; + + case 1: /* Anchor Point Actions. */ + { + /* Indexed into 'ankr' table. */ + /* Each action (record in ankrData) contains two 16-bit fields, so we must + double the ankrActionIndex to get the correct offset here. */ + const HBUINT16 *data = &ankrData[entry.data.ankrActionIndex * 2]; + if (!c->sanitizer.check_array (data, 2)) return; + unsigned int markAnchorPoint = *data++; + unsigned int currAnchorPoint = *data++; + const Anchor &markAnchor = c->ankr_table->get_anchor (c->buffer->info[mark].codepoint, + markAnchorPoint, + c->sanitizer.get_num_glyphs ()); + const Anchor &currAnchor = c->ankr_table->get_anchor (c->buffer->cur ().codepoint, + currAnchorPoint, + c->sanitizer.get_num_glyphs ()); + + o.x_offset = c->font->em_scale_x (markAnchor.xCoordinate) - c->font->em_scale_x (currAnchor.xCoordinate); + o.y_offset = c->font->em_scale_y (markAnchor.yCoordinate) - c->font->em_scale_y (currAnchor.yCoordinate); + } + break; + + case 2: /* Control Point Coordinate Actions. */ + { + /* Each action contains four 16-bit fields, so we multiply the ankrActionIndex + by 4 to get the correct offset for the given action. */ + const FWORD *data = (const FWORD *) &ankrData[entry.data.ankrActionIndex * 4]; + if (!c->sanitizer.check_array (data, 4)) return; + int markX = *data++; + int markY = *data++; + int currX = *data++; + int currY = *data++; + + o.x_offset = c->font->em_scale_x (markX) - c->font->em_scale_x (currX); + o.y_offset = c->font->em_scale_y (markY) - c->font->em_scale_y (currY); + } + break; + } + o.attach_type() = OT::Layout::GPOS_impl::ATTACH_TYPE_MARK; + o.attach_chain() = (int) mark - (int) buffer->idx; + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + } + + if (entry.flags & Mark) + { + mark_set = true; + mark = buffer->idx; + } + } + + private: + hb_aat_apply_context_t *c; + unsigned int action_type; + const HBUINT16 *ankrData; + bool mark_set; + unsigned int mark; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + driver_context_t dc (this, c); + + StateTableDriver driver (machine, c->buffer, c->font->face); + driver.drive (&dc, c); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* The rest of array sanitizations are done at run-time. */ + return_trace (likely (c->check_struct (this) && + machine.sanitize (c))); + } + + protected: + KernSubTableHeader header; + StateTable machine; + HBUINT32 flags; + public: + DEFINE_SIZE_STATIC (KernSubTableHeader::static_size + 20); +}; + +template +struct KerxSubTableFormat6 +{ + enum Flags + { + ValuesAreLong = 0x00000001, + }; + + bool is_long () const { return flags & ValuesAreLong; } + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right, + hb_aat_apply_context_t *c) const + { + unsigned int num_glyphs = c->sanitizer.get_num_glyphs (); + if (is_long ()) + { + const typename U::Long &t = u.l; + unsigned int l = (this+t.rowIndexTable).get_value_or_null (left, num_glyphs); + unsigned int r = (this+t.columnIndexTable).get_value_or_null (right, num_glyphs); + unsigned int offset = l + r; + if (unlikely (offset < l)) return 0; /* Addition overflow. */ + if (unlikely (hb_unsigned_mul_overflows (offset, sizeof (FWORD32)))) return 0; + const FWORD32 *v = &StructAtOffset (&(this+t.array), offset * sizeof (FWORD32)); + if (unlikely (!v->sanitize (&c->sanitizer))) return 0; + return kerxTupleKern (*v, header.tuple_count (), &(this+vector), c); + } + else + { + const typename U::Short &t = u.s; + unsigned int l = (this+t.rowIndexTable).get_value_or_null (left, num_glyphs); + unsigned int r = (this+t.columnIndexTable).get_value_or_null (right, num_glyphs); + unsigned int offset = l + r; + const FWORD *v = &StructAtOffset (&(this+t.array), offset * sizeof (FWORD)); + if (unlikely (!v->sanitize (&c->sanitizer))) return 0; + return kerxTupleKern (*v, header.tuple_count (), &(this+vector), c); + } + } + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + if (!c->plan->requested_kerning) + return false; + + if (header.coverage & header.Backwards) + return false; + + accelerator_t accel (*this, c); + hb_kern_machine_t machine (accel, header.coverage & header.CrossStream); + machine.kern (c->font, c->buffer, c->plan->kern_mask); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (is_long () ? + ( + u.l.rowIndexTable.sanitize (c, this) && + u.l.columnIndexTable.sanitize (c, this) && + c->check_range (this, u.l.array) + ) : ( + u.s.rowIndexTable.sanitize (c, this) && + u.s.columnIndexTable.sanitize (c, this) && + c->check_range (this, u.s.array) + )) && + (header.tuple_count () == 0 || + c->check_range (this, vector)))); + } + + struct accelerator_t + { + const KerxSubTableFormat6 &table; + hb_aat_apply_context_t *c; + + accelerator_t (const KerxSubTableFormat6 &table_, + hb_aat_apply_context_t *c_) : + table (table_), c (c_) {} + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { return table.get_kerning (left, right, c); } + }; + + protected: + KernSubTableHeader header; + HBUINT32 flags; + HBUINT16 rowCount; + HBUINT16 columnCount; + union U + { + struct Long + { + NNOffset32To> rowIndexTable; + NNOffset32To> columnIndexTable; + NNOffset32To> array; + } l; + struct Short + { + NNOffset32To> rowIndexTable; + NNOffset32To> columnIndexTable; + NNOffset32To> array; + } s; + } u; + NNOffset32To> vector; + public: + DEFINE_SIZE_STATIC (KernSubTableHeader::static_size + 24); +}; + + +struct KerxSubTableHeader +{ + typedef ExtendedTypes Types; + + unsigned tuple_count () const { return tupleCount; } + bool is_horizontal () const { return !(coverage & Vertical); } + + enum Coverage + { + Vertical = 0x80000000u, /* Set if table has vertical kerning values. */ + CrossStream = 0x40000000u, /* Set if table has cross-stream kerning values. */ + Variation = 0x20000000u, /* Set if table has variation kerning values. */ + Backwards = 0x10000000u, /* If clear, process the glyphs forwards, that + * is, from first to last in the glyph stream. + * If we, process them from last to first. + * This flag only applies to state-table based + * 'kerx' subtables (types 1 and 4). */ + Reserved = 0x0FFFFF00u, /* Reserved, set to zero. */ + SubtableType= 0x000000FFu, /* Subtable type. */ + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT32 length; + HBUINT32 coverage; + HBUINT32 tupleCount; + public: + DEFINE_SIZE_STATIC (12); +}; + +struct KerxSubTable +{ + friend struct kerx; + + unsigned int get_size () const { return u.header.length; } + unsigned int get_type () const { return u.header.coverage & u.header.SubtableType; } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + unsigned int subtable_type = get_type (); + TRACE_DISPATCH (this, subtable_type); + switch (subtable_type) { + case 0: return_trace (c->dispatch (u.format0, std::forward (ds)...)); + case 1: return_trace (c->dispatch (u.format1, std::forward (ds)...)); + case 2: return_trace (c->dispatch (u.format2, std::forward (ds)...)); + case 4: return_trace (c->dispatch (u.format4, std::forward (ds)...)); + case 6: return_trace (c->dispatch (u.format6, std::forward (ds)...)); + default: return_trace (c->default_return_value ()); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.header.sanitize (c) || + u.header.length <= u.header.static_size || + !c->check_range (this, u.header.length)) + return_trace (false); + + return_trace (dispatch (c)); + } + + public: + union { + KerxSubTableHeader header; + KerxSubTableFormat0 format0; + KerxSubTableFormat1 format1; + KerxSubTableFormat2 format2; + KerxSubTableFormat4 format4; + KerxSubTableFormat6 format6; + } u; + public: + DEFINE_SIZE_MIN (12); +}; + + +/* + * The 'kerx' Table + */ + +template +struct KerxTable +{ + /* https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern */ + const T* thiz () const { return static_cast (this); } + + bool has_state_machine () const + { + typedef typename T::SubTable SubTable; + + const SubTable *st = &thiz()->firstSubTable; + unsigned int count = thiz()->tableCount; + for (unsigned int i = 0; i < count; i++) + { + if (st->get_type () == 1) + return true; + st = &StructAfter (*st); + } + return false; + } + + bool has_cross_stream () const + { + typedef typename T::SubTable SubTable; + + const SubTable *st = &thiz()->firstSubTable; + unsigned int count = thiz()->tableCount; + for (unsigned int i = 0; i < count; i++) + { + if (st->u.header.coverage & st->u.header.CrossStream) + return true; + st = &StructAfter (*st); + } + return false; + } + + int get_h_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { + typedef typename T::SubTable SubTable; + + int v = 0; + const SubTable *st = &thiz()->firstSubTable; + unsigned int count = thiz()->tableCount; + for (unsigned int i = 0; i < count; i++) + { + if ((st->u.header.coverage & (st->u.header.Variation | st->u.header.CrossStream)) || + !st->u.header.is_horizontal ()) + continue; + v += st->get_kerning (left, right); + st = &StructAfter (*st); + } + return v; + } + + bool apply (AAT::hb_aat_apply_context_t *c) const + { + c->buffer->unsafe_to_concat (); + + typedef typename T::SubTable SubTable; + + bool ret = false; + bool seenCrossStream = false; + c->set_lookup_index (0); + const SubTable *st = &thiz()->firstSubTable; + unsigned int count = thiz()->tableCount; + for (unsigned int i = 0; i < count; i++) + { + bool reverse; + + if (!T::Types::extended && (st->u.header.coverage & st->u.header.Variation)) + goto skip; + + if (HB_DIRECTION_IS_HORIZONTAL (c->buffer->props.direction) != st->u.header.is_horizontal ()) + goto skip; + + reverse = bool (st->u.header.coverage & st->u.header.Backwards) != + HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction); + + if (!c->buffer->message (c->font, "start subtable %u", c->lookup_index)) + goto skip; + + if (!seenCrossStream && + (st->u.header.coverage & st->u.header.CrossStream)) + { + /* Attach all glyphs into a chain. */ + seenCrossStream = true; + hb_glyph_position_t *pos = c->buffer->pos; + unsigned int count = c->buffer->len; + for (unsigned int i = 0; i < count; i++) + { + pos[i].attach_type() = OT::Layout::GPOS_impl::ATTACH_TYPE_CURSIVE; + pos[i].attach_chain() = HB_DIRECTION_IS_FORWARD (c->buffer->props.direction) ? -1 : +1; + /* We intentionally don't set HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT, + * since there needs to be a non-zero attachment for post-positioning to + * be needed. */ + } + } + + if (reverse) + c->buffer->reverse (); + + { + /* See comment in sanitize() for conditional here. */ + hb_sanitize_with_object_t with (&c->sanitizer, i < count - 1 ? st : (const SubTable *) nullptr); + ret |= st->dispatch (c); + } + + if (reverse) + c->buffer->reverse (); + + (void) c->buffer->message (c->font, "end subtable %u", c->lookup_index); + + skip: + st = &StructAfter (*st); + c->set_lookup_index (c->lookup_index + 1); + } + + return ret; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!thiz()->version.sanitize (c) || + (unsigned) thiz()->version < (unsigned) T::minVersion || + !thiz()->tableCount.sanitize (c))) + return_trace (false); + + typedef typename T::SubTable SubTable; + + const SubTable *st = &thiz()->firstSubTable; + unsigned int count = thiz()->tableCount; + for (unsigned int i = 0; i < count; i++) + { + if (unlikely (!st->u.header.sanitize (c))) + return_trace (false); + /* OpenType kern table has 2-byte subtable lengths. That's limiting. + * MS implementation also only supports one subtable, of format 0, + * anyway. Certain versions of some fonts, like Calibry, contain + * kern subtable that exceeds 64kb. Looks like, the subtable length + * is simply ignored. Which makes sense. It's only needed if you + * have multiple subtables. To handle such fonts, we just ignore + * the length for the last subtable. */ + hb_sanitize_with_object_t with (c, i < count - 1 ? st : (const SubTable *) nullptr); + + if (unlikely (!st->sanitize (c))) + return_trace (false); + + st = &StructAfter (*st); + } + + return_trace (true); + } +}; + +struct kerx : KerxTable +{ + friend struct KerxTable; + + static constexpr hb_tag_t tableTag = HB_AAT_TAG_kerx; + static constexpr unsigned minVersion = 2u; + + typedef KerxSubTableHeader SubTableHeader; + typedef SubTableHeader::Types Types; + typedef KerxSubTable SubTable; + + bool has_data () const { return version; } + + protected: + HBUINT16 version; /* The version number of the extended kerning table + * (currently 2, 3, or 4). */ + HBUINT16 unused; /* Set to 0. */ + HBUINT32 tableCount; /* The number of subtables included in the extended kerning + * table. */ + SubTable firstSubTable; /* Subtables. */ +/*subtableGlyphCoverageArray*/ /* Only if version >= 3. We don't use. */ + + public: + DEFINE_SIZE_MIN (8); +}; + + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_KERX_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-morx-table.hh b/gfx/harfbuzz/src/hb-aat-layout-morx-table.hh new file mode 100644 index 0000000000..f41ecc197f --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-morx-table.hh @@ -0,0 +1,1210 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_LAYOUT_MORX_TABLE_HH +#define HB_AAT_LAYOUT_MORX_TABLE_HH + +#include "hb-open-type.hh" +#include "hb-aat-layout-common.hh" +#include "hb-ot-layout-common.hh" +#include "hb-ot-layout-gdef-table.hh" +#include "hb-aat-map.hh" + +/* + * morx -- Extended Glyph Metamorphosis + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6morx.html + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6mort.html + */ +#define HB_AAT_TAG_morx HB_TAG('m','o','r','x') +#define HB_AAT_TAG_mort HB_TAG('m','o','r','t') + + +namespace AAT { + +using namespace OT; + +template +struct RearrangementSubtable +{ + typedef typename Types::HBUINT HBUINT; + + typedef void EntryData; + + struct driver_context_t + { + static constexpr bool in_place = true; + enum Flags + { + MarkFirst = 0x8000, /* If set, make the current glyph the first + * glyph to be rearranged. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph + * before going to the new state. This means + * that the glyph index doesn't change, even + * if the glyph at that index has changed. */ + MarkLast = 0x2000, /* If set, make the current glyph the last + * glyph to be rearranged. */ + Reserved = 0x1FF0, /* These bits are reserved and should be set to 0. */ + Verb = 0x000F, /* The type of rearrangement specified. */ + }; + + driver_context_t (const RearrangementSubtable *table HB_UNUSED) : + ret (false), + start (0), end (0) {} + + bool is_actionable (StateTableDriver *driver HB_UNUSED, + const Entry &entry) + { + return (entry.flags & Verb) && start < end; + } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + unsigned int flags = entry.flags; + + if (flags & MarkFirst) + start = buffer->idx; + + if (flags & MarkLast) + end = hb_min (buffer->idx + 1, buffer->len); + + if ((flags & Verb) && start < end) + { + /* The following map has two nibbles, for start-side + * and end-side. Values of 0,1,2 mean move that many + * to the other side. Value of 3 means move 2 and + * flip them. */ + const unsigned char map[16] = + { + 0x00, /* 0 no change */ + 0x10, /* 1 Ax => xA */ + 0x01, /* 2 xD => Dx */ + 0x11, /* 3 AxD => DxA */ + 0x20, /* 4 ABx => xAB */ + 0x30, /* 5 ABx => xBA */ + 0x02, /* 6 xCD => CDx */ + 0x03, /* 7 xCD => DCx */ + 0x12, /* 8 AxCD => CDxA */ + 0x13, /* 9 AxCD => DCxA */ + 0x21, /* 10 ABxD => DxAB */ + 0x31, /* 11 ABxD => DxBA */ + 0x22, /* 12 ABxCD => CDxAB */ + 0x32, /* 13 ABxCD => CDxBA */ + 0x23, /* 14 ABxCD => DCxAB */ + 0x33, /* 15 ABxCD => DCxBA */ + }; + + unsigned int m = map[flags & Verb]; + unsigned int l = hb_min (2u, m >> 4); + unsigned int r = hb_min (2u, m & 0x0F); + bool reverse_l = 3 == (m >> 4); + bool reverse_r = 3 == (m & 0x0F); + + if (end - start >= l + r && end-start <= HB_MAX_CONTEXT_LENGTH) + { + buffer->merge_clusters (start, hb_min (buffer->idx + 1, buffer->len)); + buffer->merge_clusters (start, end); + + hb_glyph_info_t *info = buffer->info; + hb_glyph_info_t buf[4]; + + hb_memcpy (buf, info + start, l * sizeof (buf[0])); + hb_memcpy (buf + 2, info + end - r, r * sizeof (buf[0])); + + if (l != r) + memmove (info + start + r, info + start + l, (end - start - l - r) * sizeof (buf[0])); + + hb_memcpy (info + start, buf + 2, r * sizeof (buf[0])); + hb_memcpy (info + end - l, buf, l * sizeof (buf[0])); + if (reverse_l) + { + buf[0] = info[end - 1]; + info[end - 1] = info[end - 2]; + info[end - 2] = buf[0]; + } + if (reverse_r) + { + buf[0] = info[start]; + info[start] = info[start + 1]; + info[start + 1] = buf[0]; + } + } + } + } + + public: + bool ret; + private: + unsigned int start; + unsigned int end; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + driver_context_t dc (this); + + StateTableDriver driver (machine, c->buffer, c->face); + driver.drive (&dc, c); + + return_trace (dc.ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (machine.sanitize (c)); + } + + protected: + StateTable machine; + public: + DEFINE_SIZE_STATIC (16); +}; + +template +struct ContextualSubtable +{ + typedef typename Types::HBUINT HBUINT; + + struct EntryData + { + HBUINT16 markIndex; /* Index of the substitution table for the + * marked glyph (use 0xFFFF for none). */ + HBUINT16 currentIndex; /* Index of the substitution table for the + * current glyph (use 0xFFFF for none). */ + public: + DEFINE_SIZE_STATIC (4); + }; + + struct driver_context_t + { + static constexpr bool in_place = true; + enum Flags + { + SetMark = 0x8000, /* If set, make the current glyph the marked glyph. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph before + * going to the new state. */ + Reserved = 0x3FFF, /* These bits are reserved and should be set to 0. */ + }; + + driver_context_t (const ContextualSubtable *table_, + hb_aat_apply_context_t *c_) : + ret (false), + c (c_), + gdef (*c->gdef_table), + mark_set (false), + has_glyph_classes (gdef.has_glyph_classes ()), + mark (0), + table (table_), + subs (table+table->substitutionTables) {} + + bool is_actionable (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + + if (buffer->idx == buffer->len && !mark_set) + return false; + + return entry.data.markIndex != 0xFFFF || entry.data.currentIndex != 0xFFFF; + } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + + /* Looks like CoreText applies neither mark nor current substitution for + * end-of-text if mark was not explicitly set. */ + if (buffer->idx == buffer->len && !mark_set) + return; + + const HBGlyphID16 *replacement; + + replacement = nullptr; + if (Types::extended) + { + if (entry.data.markIndex != 0xFFFF) + { + const Lookup &lookup = subs[entry.data.markIndex]; + replacement = lookup.get_value (buffer->info[mark].codepoint, driver->num_glyphs); + } + } + else + { + unsigned int offset = entry.data.markIndex + buffer->info[mark].codepoint; + const UnsizedArrayOf &subs_old = (const UnsizedArrayOf &) subs; + replacement = &subs_old[Types::wordOffsetToIndex (offset, table, subs_old.arrayZ)]; + if (!replacement->sanitize (&c->sanitizer) || !*replacement) + replacement = nullptr; + } + if (replacement) + { + buffer->unsafe_to_break (mark, hb_min (buffer->idx + 1, buffer->len)); + buffer->info[mark].codepoint = *replacement; + if (has_glyph_classes) + _hb_glyph_info_set_glyph_props (&buffer->info[mark], + gdef.get_glyph_props (*replacement)); + ret = true; + } + + replacement = nullptr; + unsigned int idx = hb_min (buffer->idx, buffer->len - 1); + if (Types::extended) + { + if (entry.data.currentIndex != 0xFFFF) + { + const Lookup &lookup = subs[entry.data.currentIndex]; + replacement = lookup.get_value (buffer->info[idx].codepoint, driver->num_glyphs); + } + } + else + { + unsigned int offset = entry.data.currentIndex + buffer->info[idx].codepoint; + const UnsizedArrayOf &subs_old = (const UnsizedArrayOf &) subs; + replacement = &subs_old[Types::wordOffsetToIndex (offset, table, subs_old.arrayZ)]; + if (!replacement->sanitize (&c->sanitizer) || !*replacement) + replacement = nullptr; + } + if (replacement) + { + buffer->info[idx].codepoint = *replacement; + if (has_glyph_classes) + _hb_glyph_info_set_glyph_props (&buffer->info[idx], + gdef.get_glyph_props (*replacement)); + ret = true; + } + + if (entry.flags & SetMark) + { + mark_set = true; + mark = buffer->idx; + } + } + + public: + bool ret; + private: + hb_aat_apply_context_t *c; + const OT::GDEF &gdef; + bool mark_set; + bool has_glyph_classes; + unsigned int mark; + const ContextualSubtable *table; + const UnsizedListOfOffset16To, HBUINT, false> &subs; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + driver_context_t dc (this, c); + + StateTableDriver driver (machine, c->buffer, c->face); + driver.drive (&dc, c); + + return_trace (dc.ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + + unsigned int num_entries = 0; + if (unlikely (!machine.sanitize (c, &num_entries))) return_trace (false); + + if (!Types::extended) + return_trace (substitutionTables.sanitize (c, this, 0)); + + unsigned int num_lookups = 0; + + const Entry *entries = machine.get_entries (); + for (unsigned int i = 0; i < num_entries; i++) + { + const EntryData &data = entries[i].data; + + if (data.markIndex != 0xFFFF) + num_lookups = hb_max (num_lookups, 1u + data.markIndex); + if (data.currentIndex != 0xFFFF) + num_lookups = hb_max (num_lookups, 1u + data.currentIndex); + } + + return_trace (substitutionTables.sanitize (c, this, num_lookups)); + } + + protected: + StateTable + machine; + NNOffsetTo, HBUINT, false>, HBUINT> + substitutionTables; + public: + DEFINE_SIZE_STATIC (20); +}; + + +template +struct LigatureEntry; + +template <> +struct LigatureEntry +{ + enum Flags + { + SetComponent = 0x8000, /* Push this glyph onto the component stack for + * eventual processing. */ + DontAdvance = 0x4000, /* Leave the glyph pointer at this glyph for the + next iteration. */ + PerformAction = 0x2000, /* Use the ligActionIndex to process a ligature + * group. */ + Reserved = 0x1FFF, /* These bits are reserved and should be set to 0. */ + }; + + struct EntryData + { + HBUINT16 ligActionIndex; /* Index to the first ligActionTable entry + * for processing this group, if indicated + * by the flags. */ + public: + DEFINE_SIZE_STATIC (2); + }; + + static bool performAction (const Entry &entry) + { return entry.flags & PerformAction; } + + static unsigned int ligActionIndex (const Entry &entry) + { return entry.data.ligActionIndex; } +}; +template <> +struct LigatureEntry +{ + enum Flags + { + SetComponent = 0x8000, /* Push this glyph onto the component stack for + * eventual processing. */ + DontAdvance = 0x4000, /* Leave the glyph pointer at this glyph for the + next iteration. */ + Offset = 0x3FFF, /* Byte offset from beginning of subtable to the + * ligature action list. This value must be a + * multiple of 4. */ + }; + + typedef void EntryData; + + static bool performAction (const Entry &entry) + { return entry.flags & Offset; } + + static unsigned int ligActionIndex (const Entry &entry) + { return entry.flags & Offset; } +}; + + +template +struct LigatureSubtable +{ + typedef typename Types::HBUINT HBUINT; + + typedef LigatureEntry LigatureEntryT; + typedef typename LigatureEntryT::EntryData EntryData; + + struct driver_context_t + { + static constexpr bool in_place = false; + enum + { + DontAdvance = LigatureEntryT::DontAdvance, + }; + enum LigActionFlags + { + LigActionLast = 0x80000000, /* This is the last action in the list. This also + * implies storage. */ + LigActionStore = 0x40000000, /* Store the ligature at the current cumulated index + * in the ligature table in place of the marked + * (i.e. currently-popped) glyph. */ + LigActionOffset = 0x3FFFFFFF, /* A 30-bit value which is sign-extended to 32-bits + * and added to the glyph ID, resulting in an index + * into the component table. */ + }; + + driver_context_t (const LigatureSubtable *table_, + hb_aat_apply_context_t *c_) : + ret (false), + c (c_), + table (table_), + ligAction (table+table->ligAction), + component (table+table->component), + ligature (table+table->ligature), + match_length (0) {} + + bool is_actionable (StateTableDriver *driver HB_UNUSED, + const Entry &entry) + { + return LigatureEntryT::performAction (entry); + } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + + DEBUG_MSG (APPLY, nullptr, "Ligature transition at %u", buffer->idx); + if (entry.flags & LigatureEntryT::SetComponent) + { + /* Never mark same index twice, in case DontAdvance was used... */ + if (match_length && match_positions[(match_length - 1u) % ARRAY_LENGTH (match_positions)] == buffer->out_len) + match_length--; + + match_positions[match_length++ % ARRAY_LENGTH (match_positions)] = buffer->out_len; + DEBUG_MSG (APPLY, nullptr, "Set component at %u", buffer->out_len); + } + + if (LigatureEntryT::performAction (entry)) + { + DEBUG_MSG (APPLY, nullptr, "Perform action with %u", match_length); + unsigned int end = buffer->out_len; + + if (unlikely (!match_length)) + return; + + if (buffer->idx >= buffer->len) + return; /* TODO Work on previous instead? */ + + unsigned int cursor = match_length; + + unsigned int action_idx = LigatureEntryT::ligActionIndex (entry); + action_idx = Types::offsetToIndex (action_idx, table, ligAction.arrayZ); + const HBUINT32 *actionData = &ligAction[action_idx]; + + unsigned int ligature_idx = 0; + unsigned int action; + do + { + if (unlikely (!cursor)) + { + /* Stack underflow. Clear the stack. */ + DEBUG_MSG (APPLY, nullptr, "Stack underflow"); + match_length = 0; + break; + } + + DEBUG_MSG (APPLY, nullptr, "Moving to stack position %u", cursor - 1); + if (unlikely (!buffer->move_to (match_positions[--cursor % ARRAY_LENGTH (match_positions)]))) return; + + if (unlikely (!actionData->sanitize (&c->sanitizer))) break; + action = *actionData; + + uint32_t uoffset = action & LigActionOffset; + if (uoffset & 0x20000000) + uoffset |= 0xC0000000; /* Sign-extend. */ + int32_t offset = (int32_t) uoffset; + unsigned int component_idx = buffer->cur().codepoint + offset; + component_idx = Types::wordOffsetToIndex (component_idx, table, component.arrayZ); + const HBUINT16 &componentData = component[component_idx]; + if (unlikely (!componentData.sanitize (&c->sanitizer))) break; + ligature_idx += componentData; + + DEBUG_MSG (APPLY, nullptr, "Action store %d last %d", + bool (action & LigActionStore), + bool (action & LigActionLast)); + if (action & (LigActionStore | LigActionLast)) + { + ligature_idx = Types::offsetToIndex (ligature_idx, table, ligature.arrayZ); + const HBGlyphID16 &ligatureData = ligature[ligature_idx]; + if (unlikely (!ligatureData.sanitize (&c->sanitizer))) break; + hb_codepoint_t lig = ligatureData; + + DEBUG_MSG (APPLY, nullptr, "Produced ligature %u", lig); + if (unlikely (!buffer->replace_glyph (lig))) return; + + unsigned int lig_end = match_positions[(match_length - 1u) % ARRAY_LENGTH (match_positions)] + 1u; + /* Now go and delete all subsequent components. */ + while (match_length - 1u > cursor) + { + DEBUG_MSG (APPLY, nullptr, "Skipping ligature component"); + if (unlikely (!buffer->move_to (match_positions[--match_length % ARRAY_LENGTH (match_positions)]))) return; + if (unlikely (!buffer->replace_glyph (DELETED_GLYPH))) return; + } + + if (unlikely (!buffer->move_to (lig_end))) return; + buffer->merge_out_clusters (match_positions[cursor % ARRAY_LENGTH (match_positions)], buffer->out_len); + } + + actionData++; + } + while (!(action & LigActionLast)); + if (unlikely (!buffer->move_to (end))) return; + } + } + + public: + bool ret; + private: + hb_aat_apply_context_t *c; + const LigatureSubtable *table; + const UnsizedArrayOf &ligAction; + const UnsizedArrayOf &component; + const UnsizedArrayOf &ligature; + unsigned int match_length; + unsigned int match_positions[HB_MAX_CONTEXT_LENGTH]; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + driver_context_t dc (this, c); + + StateTableDriver driver (machine, c->buffer, c->face); + driver.drive (&dc, c); + + return_trace (dc.ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* The rest of array sanitizations are done at run-time. */ + return_trace (c->check_struct (this) && machine.sanitize (c) && + ligAction && component && ligature); + } + + protected: + StateTable + machine; + NNOffsetTo, HBUINT> + ligAction; /* Offset to the ligature action table. */ + NNOffsetTo, HBUINT> + component; /* Offset to the component table. */ + NNOffsetTo, HBUINT> + ligature; /* Offset to the actual ligature lists. */ + public: + DEFINE_SIZE_STATIC (28); +}; + +template +struct NoncontextualSubtable +{ + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + const OT::GDEF &gdef (*c->gdef_table); + bool has_glyph_classes = gdef.has_glyph_classes (); + + bool ret = false; + unsigned int num_glyphs = c->face->get_num_glyphs (); + + hb_glyph_info_t *info = c->buffer->info; + unsigned int count = c->buffer->len; + // If there's only one range, we already checked the flag. + auto *last_range = c->range_flags && (c->range_flags->length > 1) ? &(*c->range_flags)[0] : nullptr; + for (unsigned int i = 0; i < count; i++) + { + /* This block copied from StateTableDriver::drive. Keep in sync. */ + if (last_range) + { + auto *range = last_range; + { + unsigned cluster = info[i].cluster; + while (cluster < range->cluster_first) + range--; + while (cluster > range->cluster_last) + range++; + + last_range = range; + } + if (!(range->flags & c->subtable_flags)) + continue; + } + + const HBGlyphID16 *replacement = substitute.get_value (info[i].codepoint, num_glyphs); + if (replacement) + { + info[i].codepoint = *replacement; + if (has_glyph_classes) + _hb_glyph_info_set_glyph_props (&info[i], + gdef.get_glyph_props (*replacement)); + ret = true; + } + } + + return_trace (ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (substitute.sanitize (c)); + } + + protected: + Lookup substitute; + public: + DEFINE_SIZE_MIN (2); +}; + +template +struct InsertionSubtable +{ + typedef typename Types::HBUINT HBUINT; + + struct EntryData + { + HBUINT16 currentInsertIndex; /* Zero-based index into the insertion glyph table. + * The number of glyphs to be inserted is contained + * in the currentInsertCount field in the flags. + * A value of 0xFFFF indicates no insertion is to + * be done. */ + HBUINT16 markedInsertIndex; /* Zero-based index into the insertion glyph table. + * The number of glyphs to be inserted is contained + * in the markedInsertCount field in the flags. + * A value of 0xFFFF indicates no insertion is to + * be done. */ + public: + DEFINE_SIZE_STATIC (4); + }; + + struct driver_context_t + { + static constexpr bool in_place = false; + enum Flags + { + SetMark = 0x8000, /* If set, mark the current glyph. */ + DontAdvance = 0x4000, /* If set, don't advance to the next glyph before + * going to the new state. This does not mean + * that the glyph pointed to is the same one as + * before. If you've made insertions immediately + * downstream of the current glyph, the next glyph + * processed would in fact be the first one + * inserted. */ + CurrentIsKashidaLike= 0x2000, /* If set, and the currentInsertList is nonzero, + * then the specified glyph list will be inserted + * as a kashida-like insertion, either before or + * after the current glyph (depending on the state + * of the currentInsertBefore flag). If clear, and + * the currentInsertList is nonzero, then the + * specified glyph list will be inserted as a + * split-vowel-like insertion, either before or + * after the current glyph (depending on the state + * of the currentInsertBefore flag). */ + MarkedIsKashidaLike= 0x1000, /* If set, and the markedInsertList is nonzero, + * then the specified glyph list will be inserted + * as a kashida-like insertion, either before or + * after the marked glyph (depending on the state + * of the markedInsertBefore flag). If clear, and + * the markedInsertList is nonzero, then the + * specified glyph list will be inserted as a + * split-vowel-like insertion, either before or + * after the marked glyph (depending on the state + * of the markedInsertBefore flag). */ + CurrentInsertBefore= 0x0800, /* If set, specifies that insertions are to be made + * to the left of the current glyph. If clear, + * they're made to the right of the current glyph. */ + MarkedInsertBefore= 0x0400, /* If set, specifies that insertions are to be + * made to the left of the marked glyph. If clear, + * they're made to the right of the marked glyph. */ + CurrentInsertCount= 0x3E0, /* This 5-bit field is treated as a count of the + * number of glyphs to insert at the current + * position. Since zero means no insertions, the + * largest number of insertions at any given + * current location is 31 glyphs. */ + MarkedInsertCount= 0x001F, /* This 5-bit field is treated as a count of the + * number of glyphs to insert at the marked + * position. Since zero means no insertions, the + * largest number of insertions at any given + * marked location is 31 glyphs. */ + }; + + driver_context_t (const InsertionSubtable *table, + hb_aat_apply_context_t *c_) : + ret (false), + c (c_), + mark (0), + insertionAction (table+table->insertionAction) {} + + bool is_actionable (StateTableDriver *driver HB_UNUSED, + const Entry &entry) + { + return (entry.flags & (CurrentInsertCount | MarkedInsertCount)) && + (entry.data.currentInsertIndex != 0xFFFF ||entry.data.markedInsertIndex != 0xFFFF); + } + void transition (StateTableDriver *driver, + const Entry &entry) + { + hb_buffer_t *buffer = driver->buffer; + unsigned int flags = entry.flags; + + unsigned mark_loc = buffer->out_len; + + if (entry.data.markedInsertIndex != 0xFFFF) + { + unsigned int count = (flags & MarkedInsertCount); + if (unlikely ((buffer->max_ops -= count) <= 0)) return; + unsigned int start = entry.data.markedInsertIndex; + const HBGlyphID16 *glyphs = &insertionAction[start]; + if (unlikely (!c->sanitizer.check_array (glyphs, count))) count = 0; + + bool before = flags & MarkedInsertBefore; + + unsigned int end = buffer->out_len; + if (unlikely (!buffer->move_to (mark))) return; + + if (buffer->idx < buffer->len && !before) + if (unlikely (!buffer->copy_glyph ())) return; + /* TODO We ignore KashidaLike setting. */ + if (unlikely (!buffer->replace_glyphs (0, count, glyphs))) return; + if (buffer->idx < buffer->len && !before) + buffer->skip_glyph (); + + if (unlikely (!buffer->move_to (end + count))) return; + + buffer->unsafe_to_break_from_outbuffer (mark, hb_min (buffer->idx + 1, buffer->len)); + } + + if (flags & SetMark) + mark = mark_loc; + + if (entry.data.currentInsertIndex != 0xFFFF) + { + unsigned int count = (flags & CurrentInsertCount) >> 5; + if (unlikely ((buffer->max_ops -= count) <= 0)) return; + unsigned int start = entry.data.currentInsertIndex; + const HBGlyphID16 *glyphs = &insertionAction[start]; + if (unlikely (!c->sanitizer.check_array (glyphs, count))) count = 0; + + bool before = flags & CurrentInsertBefore; + + unsigned int end = buffer->out_len; + + if (buffer->idx < buffer->len && !before) + if (unlikely (!buffer->copy_glyph ())) return; + /* TODO We ignore KashidaLike setting. */ + if (unlikely (!buffer->replace_glyphs (0, count, glyphs))) return; + if (buffer->idx < buffer->len && !before) + buffer->skip_glyph (); + + /* Humm. Not sure where to move to. There's this wording under + * DontAdvance flag: + * + * "If set, don't update the glyph index before going to the new state. + * This does not mean that the glyph pointed to is the same one as + * before. If you've made insertions immediately downstream of the + * current glyph, the next glyph processed would in fact be the first + * one inserted." + * + * This suggests that if DontAdvance is NOT set, we should move to + * end+count. If it *was*, then move to end, such that newly inserted + * glyphs are now visible. + * + * https://github.com/harfbuzz/harfbuzz/issues/1224#issuecomment-427691417 + */ + if (unlikely (!buffer->move_to ((flags & DontAdvance) ? end : end + count))) return; + } + } + + public: + bool ret; + private: + hb_aat_apply_context_t *c; + unsigned int mark; + const UnsizedArrayOf &insertionAction; + }; + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + driver_context_t dc (this, c); + + StateTableDriver driver (machine, c->buffer, c->face); + driver.drive (&dc, c); + + return_trace (dc.ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* The rest of array sanitizations are done at run-time. */ + return_trace (c->check_struct (this) && machine.sanitize (c) && + insertionAction); + } + + protected: + StateTable + machine; + NNOffsetTo, HBUINT> + insertionAction; /* Byte offset from stateHeader to the start of + * the insertion glyph table. */ + public: + DEFINE_SIZE_STATIC (20); +}; + + +struct Feature +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT16 featureType; /* The type of feature. */ + HBUINT16 featureSetting; /* The feature's setting (aka selector). */ + HBUINT32 enableFlags; /* Flags for the settings that this feature + * and setting enables. */ + HBUINT32 disableFlags; /* Complement of flags for the settings that this + * feature and setting disable. */ + + public: + DEFINE_SIZE_STATIC (12); +}; + +template +struct ChainSubtable +{ + typedef typename Types::HBUINT HBUINT; + + template + friend struct Chain; + + unsigned int get_size () const { return length; } + unsigned int get_type () const { return coverage & 0xFF; } + unsigned int get_coverage () const { return coverage >> (sizeof (HBUINT) * 8 - 8); } + + enum Coverage + { + Vertical = 0x80, /* If set, this subtable will only be applied + * to vertical text. If clear, this subtable + * will only be applied to horizontal text. */ + Backwards = 0x40, /* If set, this subtable will process glyphs + * in descending order. If clear, it will + * process the glyphs in ascending order. */ + AllDirections = 0x20, /* If set, this subtable will be applied to + * both horizontal and vertical text (i.e. + * the state of bit 0x80000000 is ignored). */ + Logical = 0x10, /* If set, this subtable will process glyphs + * in logical order (or reverse logical order, + * depending on the value of bit 0x80000000). */ + }; + enum Type + { + Rearrangement = 0, + Contextual = 1, + Ligature = 2, + Noncontextual = 4, + Insertion = 5 + }; + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + unsigned int subtable_type = get_type (); + TRACE_DISPATCH (this, subtable_type); + switch (subtable_type) { + case Rearrangement: return_trace (c->dispatch (u.rearrangement, std::forward (ds)...)); + case Contextual: return_trace (c->dispatch (u.contextual, std::forward (ds)...)); + case Ligature: return_trace (c->dispatch (u.ligature, std::forward (ds)...)); + case Noncontextual: return_trace (c->dispatch (u.noncontextual, std::forward (ds)...)); + case Insertion: return_trace (c->dispatch (u.insertion, std::forward (ds)...)); + default: return_trace (c->default_return_value ()); + } + } + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + hb_sanitize_with_object_t with (&c->sanitizer, this); + return_trace (dispatch (c)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!length.sanitize (c) || + length <= min_size || + !c->check_range (this, length)) + return_trace (false); + + hb_sanitize_with_object_t with (c, this); + return_trace (dispatch (c)); + } + + protected: + HBUINT length; /* Total subtable length, including this header. */ + HBUINT coverage; /* Coverage flags and subtable type. */ + HBUINT32 subFeatureFlags;/* The 32-bit mask identifying which subtable this is. */ + union { + RearrangementSubtable rearrangement; + ContextualSubtable contextual; + LigatureSubtable ligature; + NoncontextualSubtable noncontextual; + InsertionSubtable insertion; + } u; + public: + DEFINE_SIZE_MIN (2 * sizeof (HBUINT) + 4); +}; + +template +struct Chain +{ + typedef typename Types::HBUINT HBUINT; + + hb_mask_t compile_flags (const hb_aat_map_builder_t *map) const + { + hb_mask_t flags = defaultFlags; + { + unsigned int count = featureCount; + for (unsigned i = 0; i < count; i++) + { + const Feature &feature = featureZ[i]; + hb_aat_layout_feature_type_t type = (hb_aat_layout_feature_type_t) (unsigned int) feature.featureType; + hb_aat_layout_feature_selector_t setting = (hb_aat_layout_feature_selector_t) (unsigned int) feature.featureSetting; + retry: + // Check whether this type/setting pair was requested in the map, and if so, apply its flags. + // (The search here only looks at the type and setting fields of feature_info_t.) + hb_aat_map_builder_t::feature_info_t info = { type, setting, false, 0 }; + if (map->current_features.bsearch (info)) + { + flags &= feature.disableFlags; + flags |= feature.enableFlags; + } + else if (type == HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE && setting == HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS) + { + /* Deprecated. https://github.com/harfbuzz/harfbuzz/issues/1342 */ + type = HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE; + setting = HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS; + goto retry; + } +#ifndef HB_NO_AAT + else if (type == HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE && setting && + /* TODO: Rudimentary language matching. */ + hb_language_matches (map->face->table.ltag->get_language (setting - 1), map->props.language)) + { + flags &= feature.disableFlags; + flags |= feature.enableFlags; + } +#endif + } + } + return flags; + } + + void apply (hb_aat_apply_context_t *c) const + { + const ChainSubtable *subtable = &StructAfter> (featureZ.as_array (featureCount)); + unsigned int count = subtableCount; + for (unsigned int i = 0; i < count; i++) + { + bool reverse; + + if (hb_none (hb_iter (c->range_flags) | + hb_map ([&subtable] (const hb_aat_map_t::range_flags_t _) -> bool { return subtable->subFeatureFlags & (_.flags); }))) + goto skip; + c->subtable_flags = subtable->subFeatureFlags; + + if (!(subtable->get_coverage() & ChainSubtable::AllDirections) && + HB_DIRECTION_IS_VERTICAL (c->buffer->props.direction) != + bool (subtable->get_coverage() & ChainSubtable::Vertical)) + goto skip; + + /* Buffer contents is always in logical direction. Determine if + * we need to reverse before applying this subtable. We reverse + * back after if we did reverse indeed. + * + * Quoting the spac: + * """ + * Bits 28 and 30 of the coverage field control the order in which + * glyphs are processed when the subtable is run by the layout engine. + * Bit 28 is used to indicate if the glyph processing direction is + * the same as logical order or layout order. Bit 30 is used to + * indicate whether glyphs are processed forwards or backwards within + * that order. + + Bit 30 Bit 28 Interpretation for Horizontal Text + 0 0 The subtable is processed in layout order + (the same order as the glyphs, which is + always left-to-right). + 1 0 The subtable is processed in reverse layout order + (the order opposite that of the glyphs, which is + always right-to-left). + 0 1 The subtable is processed in logical order + (the same order as the characters, which may be + left-to-right or right-to-left). + 1 1 The subtable is processed in reverse logical order + (the order opposite that of the characters, which + may be right-to-left or left-to-right). + */ + reverse = subtable->get_coverage () & ChainSubtable::Logical ? + bool (subtable->get_coverage () & ChainSubtable::Backwards) : + bool (subtable->get_coverage () & ChainSubtable::Backwards) != + HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction); + + if (!c->buffer->message (c->font, "start chainsubtable %u", c->lookup_index)) + goto skip; + + if (reverse) + c->buffer->reverse (); + + subtable->apply (c); + + if (reverse) + c->buffer->reverse (); + + (void) c->buffer->message (c->font, "end chainsubtable %u", c->lookup_index); + + if (unlikely (!c->buffer->successful)) return; + + skip: + subtable = &StructAfter> (*subtable); + c->set_lookup_index (c->lookup_index + 1); + } + } + + unsigned int get_size () const { return length; } + + bool sanitize (hb_sanitize_context_t *c, unsigned int version HB_UNUSED) const + { + TRACE_SANITIZE (this); + if (!length.sanitize (c) || + length < min_size || + !c->check_range (this, length)) + return_trace (false); + + if (!c->check_array (featureZ.arrayZ, featureCount)) + return_trace (false); + + const ChainSubtable *subtable = &StructAfter> (featureZ.as_array (featureCount)); + unsigned int count = subtableCount; + for (unsigned int i = 0; i < count; i++) + { + if (!subtable->sanitize (c)) + return_trace (false); + subtable = &StructAfter> (*subtable); + } + + return_trace (true); + } + + protected: + HBUINT32 defaultFlags; /* The default specification for subtables. */ + HBUINT32 length; /* Total byte count, including this header. */ + HBUINT featureCount; /* Number of feature subtable entries. */ + HBUINT subtableCount; /* The number of subtables in the chain. */ + + UnsizedArrayOf featureZ; /* Features. */ +/*ChainSubtable firstSubtable;*//* Subtables. */ +/*subtableGlyphCoverageArray*/ /* Only if version >= 3. We don't use. */ + + public: + DEFINE_SIZE_MIN (8 + 2 * sizeof (HBUINT)); +}; + + +/* + * The 'mort'/'morx' Table + */ + +template +struct mortmorx +{ + static constexpr hb_tag_t tableTag = TAG; + + bool has_data () const { return version != 0; } + + void compile_flags (const hb_aat_map_builder_t *mapper, + hb_aat_map_t *map) const + { + const Chain *chain = &firstChain; + unsigned int count = chainCount; + if (unlikely (!map->chain_flags.resize (count))) + return; + for (unsigned int i = 0; i < count; i++) + { + map->chain_flags[i].push (hb_aat_map_t::range_flags_t {chain->compile_flags (mapper), + mapper->range_first, + mapper->range_last}); + chain = &StructAfter> (*chain); + } + } + + void apply (hb_aat_apply_context_t *c, + const hb_aat_map_t &map) const + { + if (unlikely (!c->buffer->successful)) return; + + c->buffer->unsafe_to_concat (); + + c->set_lookup_index (0); + const Chain *chain = &firstChain; + unsigned int count = chainCount; + for (unsigned int i = 0; i < count; i++) + { + c->range_flags = &map.chain_flags[i]; + chain->apply (c); + if (unlikely (!c->buffer->successful)) return; + chain = &StructAfter> (*chain); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!version.sanitize (c) || !version || !chainCount.sanitize (c)) + return_trace (false); + + const Chain *chain = &firstChain; + unsigned int count = chainCount; + for (unsigned int i = 0; i < count; i++) + { + if (!chain->sanitize (c, version)) + return_trace (false); + chain = &StructAfter> (*chain); + } + + return_trace (true); + } + + protected: + HBUINT16 version; /* Version number of the glyph metamorphosis table. + * 1, 2, or 3. */ + HBUINT16 unused; /* Set to 0. */ + HBUINT32 chainCount; /* Number of metamorphosis chains contained in this + * table. */ + Chain firstChain; /* Chains. */ + + public: + DEFINE_SIZE_MIN (8); +}; + +struct morx : mortmorx {}; +struct mort : mortmorx {}; + + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_MORX_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-opbd-table.hh b/gfx/harfbuzz/src/hb-aat-layout-opbd-table.hh new file mode 100644 index 0000000000..51b650fc33 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-opbd-table.hh @@ -0,0 +1,173 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LAYOUT_OPBD_TABLE_HH +#define HB_AAT_LAYOUT_OPBD_TABLE_HH + +#include "hb-aat-layout-common.hh" +#include "hb-open-type.hh" + +/* + * opbd -- Optical Bounds + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6opbd.html + */ +#define HB_AAT_TAG_opbd HB_TAG('o','p','b','d') + + +namespace AAT { + +struct OpticalBounds +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + FWORD leftSide; + FWORD topSide; + FWORD rightSide; + FWORD bottomSide; + public: + DEFINE_SIZE_STATIC (8); +}; + +struct opbdFormat0 +{ + bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id, + hb_glyph_extents_t *extents, const void *base) const + { + const Offset16To *bounds_offset = lookupTable.get_value (glyph_id, font->face->get_num_glyphs ()); + if (!bounds_offset) return false; + const OpticalBounds &bounds = base+*bounds_offset; + + if (extents) + *extents = { + font->em_scale_x (bounds.leftSide), + font->em_scale_y (bounds.topSide), + font->em_scale_x (bounds.rightSide), + font->em_scale_y (bounds.bottomSide) + }; + return true; + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base))); + } + + protected: + Lookup> + lookupTable; /* Lookup table associating glyphs with the four + * int16 values for the left-side, top-side, + * right-side, and bottom-side optical bounds. */ + public: + DEFINE_SIZE_MIN (2); +}; + +struct opbdFormat1 +{ + bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id, + hb_glyph_extents_t *extents, const void *base) const + { + const Offset16To *bounds_offset = lookupTable.get_value (glyph_id, font->face->get_num_glyphs ()); + if (!bounds_offset) return false; + const OpticalBounds &bounds = base+*bounds_offset; + + hb_position_t left = 0, top = 0, right = 0, bottom = 0, ignore; + if (font->get_glyph_contour_point (glyph_id, bounds.leftSide, &left, &ignore) || + font->get_glyph_contour_point (glyph_id, bounds.topSide, &ignore, &top) || + font->get_glyph_contour_point (glyph_id, bounds.rightSide, &right, &ignore) || + font->get_glyph_contour_point (glyph_id, bounds.bottomSide, &ignore, &bottom)) + { + if (extents) + *extents = {left, top, right, bottom}; + return true; + } + return false; + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base))); + } + + protected: + Lookup> + lookupTable; /* Lookup table associating glyphs with the four + * int16 values for the left-side, top-side, + * right-side, and bottom-side optical bounds. */ + public: + DEFINE_SIZE_MIN (2); +}; + +struct opbd +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_opbd; + + bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id, + hb_glyph_extents_t *extents) const + { + switch (format) + { + case 0: return u.format0.get_bounds (font, glyph_id, extents, this); + case 1: return u.format1.get_bounds (font, glyph_id, extents, this); + default:return false; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this) || version.major != 1)) + return_trace (false); + + switch (format) + { + case 0: return_trace (u.format0.sanitize (c, this)); + case 1: return_trace (u.format1.sanitize (c, this)); + default:return_trace (true); + } + } + + protected: + FixedVersion<>version; /* Version number of the optical bounds + * table (0x00010000 for the current version). */ + HBUINT16 format; /* Format of the optical bounds table. + * Format 0 indicates distance and Format 1 indicates + * control point. */ + union { + opbdFormat0 format0; + opbdFormat1 format1; + } u; + public: + DEFINE_SIZE_MIN (8); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_OPBD_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout-trak-table.hh b/gfx/harfbuzz/src/hb-aat-layout-trak-table.hh new file mode 100644 index 0000000000..2ba9355b06 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout-trak-table.hh @@ -0,0 +1,230 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_LAYOUT_TRAK_TABLE_HH +#define HB_AAT_LAYOUT_TRAK_TABLE_HH + +#include "hb-aat-layout-common.hh" +#include "hb-ot-layout.hh" +#include "hb-open-type.hh" + +/* + * trak -- Tracking + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6trak.html + */ +#define HB_AAT_TAG_trak HB_TAG('t','r','a','k') + + +namespace AAT { + + +struct TrackTableEntry +{ + friend struct TrackData; + + float get_track_value () const { return track.to_float (); } + + int get_value (const void *base, unsigned int index, + unsigned int table_size) const + { return (base+valuesZ).as_array (table_size)[index]; } + + public: + bool sanitize (hb_sanitize_context_t *c, const void *base, + unsigned int table_size) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (valuesZ.sanitize (c, base, table_size)))); + } + + protected: + F16DOT16 track; /* Track value for this record. */ + NameID trackNameID; /* The 'name' table index for this track. + * (a short word or phrase like "loose" + * or "very tight") */ + NNOffset16To> + valuesZ; /* Offset from start of tracking table to + * per-size tracking values for this track. */ + + public: + DEFINE_SIZE_STATIC (8); +}; + +struct TrackData +{ + float interpolate_at (unsigned int idx, + float target_size, + const TrackTableEntry &trackTableEntry, + const void *base) const + { + unsigned int sizes = nSizes; + hb_array_t size_table ((base+sizeTable).arrayZ, sizes); + + float s0 = size_table[idx].to_float (); + float s1 = size_table[idx + 1].to_float (); + float t = unlikely (s0 == s1) ? 0.f : (target_size - s0) / (s1 - s0); + return t * trackTableEntry.get_value (base, idx + 1, sizes) + + (1.f - t) * trackTableEntry.get_value (base, idx, sizes); + } + + int get_tracking (const void *base, float ptem) const + { + /* + * Choose track. + */ + const TrackTableEntry *trackTableEntry = nullptr; + unsigned int count = nTracks; + for (unsigned int i = 0; i < count; i++) + { + /* Note: Seems like the track entries are sorted by values. But the + * spec doesn't explicitly say that. It just mentions it in the example. */ + + /* For now we only seek for track entries with zero tracking value */ + + if (trackTable[i].get_track_value () == 0.f) + { + trackTableEntry = &trackTable[i]; + break; + } + } + if (!trackTableEntry) return 0.; + + /* + * Choose size. + */ + unsigned int sizes = nSizes; + if (!sizes) return 0.; + if (sizes == 1) return trackTableEntry->get_value (base, 0, sizes); + + hb_array_t size_table ((base+sizeTable).arrayZ, sizes); + unsigned int size_index; + for (size_index = 0; size_index < sizes - 1; size_index++) + if (size_table[size_index].to_float () >= ptem) + break; + + return roundf (interpolate_at (size_index ? size_index - 1 : 0, ptem, + *trackTableEntry, base)); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + sizeTable.sanitize (c, base, nSizes) && + trackTable.sanitize (c, nTracks, base, nSizes))); + } + + protected: + HBUINT16 nTracks; /* Number of separate tracks included in this table. */ + HBUINT16 nSizes; /* Number of point sizes included in this table. */ + NNOffset32To> + sizeTable; /* Offset from start of the tracking table to + * Array[nSizes] of size values.. */ + UnsizedArrayOf + trackTable; /* Array[nTracks] of TrackTableEntry records. */ + + public: + DEFINE_SIZE_ARRAY (8, trackTable); +}; + +struct trak +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_trak; + + bool has_data () const { return version.to_int (); } + + bool apply (hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + hb_mask_t trak_mask = c->plan->trak_mask; + + const float ptem = c->font->ptem; + if (unlikely (ptem <= 0.f)) + return_trace (false); + + hb_buffer_t *buffer = c->buffer; + if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction)) + { + const TrackData &trackData = this+horizData; + int tracking = trackData.get_tracking (this, ptem); + hb_position_t offset_to_add = c->font->em_scalef_x (tracking / 2); + hb_position_t advance_to_add = c->font->em_scalef_x (tracking); + foreach_grapheme (buffer, start, end) + { + if (!(buffer->info[start].mask & trak_mask)) continue; + buffer->pos[start].x_advance += advance_to_add; + buffer->pos[start].x_offset += offset_to_add; + } + } + else + { + const TrackData &trackData = this+vertData; + int tracking = trackData.get_tracking (this, ptem); + hb_position_t offset_to_add = c->font->em_scalef_y (tracking / 2); + hb_position_t advance_to_add = c->font->em_scalef_y (tracking); + foreach_grapheme (buffer, start, end) + { + if (!(buffer->info[start].mask & trak_mask)) continue; + buffer->pos[start].y_advance += advance_to_add; + buffer->pos[start].y_offset += offset_to_add; + } + } + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + + return_trace (likely (c->check_struct (this) && + version.major == 1 && + horizData.sanitize (c, this, this) && + vertData.sanitize (c, this, this))); + } + + protected: + FixedVersion<>version; /* Version of the tracking table + * (0x00010000u for version 1.0). */ + HBUINT16 format; /* Format of the tracking table (set to 0). */ + Offset16To + horizData; /* Offset from start of tracking table to TrackData + * for horizontal text (or 0 if none). */ + Offset16To + vertData; /* Offset from start of tracking table to TrackData + * for vertical text (or 0 if none). */ + HBUINT16 reserved; /* Reserved. Set to 0. */ + + public: + DEFINE_SIZE_STATIC (12); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LAYOUT_TRAK_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-layout.cc b/gfx/harfbuzz/src/hb-aat-layout.cc new file mode 100644 index 0000000000..5e4cea2224 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout.cc @@ -0,0 +1,446 @@ +/* + * Copyright © 2017 Google, Inc. + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-aat-layout.hh" +#include "hb-aat-layout-ankr-table.hh" +#include "hb-aat-layout-bsln-table.hh" // Just so we compile it; unused otherwise. +#include "hb-aat-layout-feat-table.hh" +#include "hb-aat-layout-just-table.hh" // Just so we compile it; unused otherwise. +#include "hb-aat-layout-kerx-table.hh" +#include "hb-aat-layout-morx-table.hh" +#include "hb-aat-layout-trak-table.hh" +#include "hb-aat-ltag-table.hh" + + +/* + * hb_aat_apply_context_t + */ + +/* Note: This context is used for kerning, even without AAT, hence the condition. */ +#if !defined(HB_NO_AAT) || !defined(HB_NO_OT_KERN) + +AAT::hb_aat_apply_context_t::hb_aat_apply_context_t (const hb_ot_shape_plan_t *plan_, + hb_font_t *font_, + hb_buffer_t *buffer_, + hb_blob_t *blob) : + plan (plan_), + font (font_), + face (font->face), + buffer (buffer_), + sanitizer (), + ankr_table (&Null (AAT::ankr)), + gdef_table ( +#ifndef HB_NO_OT_LAYOUT + face->table.GDEF->table +#else + &Null (GDEF) +#endif + ), + lookup_index (0) +{ + sanitizer.init (blob); + sanitizer.set_num_glyphs (face->get_num_glyphs ()); + sanitizer.start_processing (); + sanitizer.set_max_ops (HB_SANITIZE_MAX_OPS_MAX); +} + +AAT::hb_aat_apply_context_t::~hb_aat_apply_context_t () +{ sanitizer.end_processing (); } + +void +AAT::hb_aat_apply_context_t::set_ankr_table (const AAT::ankr *ankr_table_) +{ ankr_table = ankr_table_; } + +#endif + + +/** + * SECTION:hb-aat-layout + * @title: hb-aat-layout + * @short_description: Apple Advanced Typography Layout + * @include: hb-aat.h + * + * Functions for querying AAT Layout features in the font face. + * + * HarfBuzz supports all of the AAT tables used to implement shaping. Other + * AAT tables and their associated features are not supported. + **/ + + +#if !defined(HB_NO_AAT) || defined(HAVE_CORETEXT) + +/* Mapping from OpenType feature tags to AAT feature names and selectors. + * + * Table data courtesy of Apple. Converted from mnemonics to integers + * when moving to this file. */ +static const hb_aat_feature_mapping_t feature_mappings[] = +{ + {HB_TAG ('a','f','r','c'), HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS, HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS}, + {HB_TAG ('c','2','p','c'), HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS, HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE}, + {HB_TAG ('c','2','s','c'), HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS, HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE}, + {HB_TAG ('c','a','l','t'), HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF}, + {HB_TAG ('c','a','s','e'), HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT, HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF}, + {HB_TAG ('c','l','i','g'), HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF}, + {HB_TAG ('c','p','s','p'), HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT, HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF}, + {HB_TAG ('c','s','w','h'), HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF}, + {HB_TAG ('d','l','i','g'), HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF}, + {HB_TAG ('e','x','p','t'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('f','r','a','c'), HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS, HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS}, + {HB_TAG ('f','w','i','d'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('h','a','l','t'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('h','i','s','t'), (hb_aat_layout_feature_type_t) 40, (hb_aat_layout_feature_selector_t) 0, (hb_aat_layout_feature_selector_t) 1}, + {HB_TAG ('h','k','n','a'), HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF}, + {HB_TAG ('h','l','i','g'), HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF}, + {HB_TAG ('h','n','g','l'), HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION, HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL, HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION}, + {HB_TAG ('h','o','j','o'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('h','w','i','d'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('i','t','a','l'), HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN, HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF}, + {HB_TAG ('j','p','0','4'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('j','p','7','8'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('j','p','8','3'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('j','p','9','0'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('l','i','g','a'), HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF}, + {HB_TAG ('l','n','u','m'), HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS, (hb_aat_layout_feature_selector_t) 2}, + {HB_TAG ('m','g','r','k'), HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS, HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF}, + {HB_TAG ('n','l','c','k'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('o','n','u','m'), HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS, (hb_aat_layout_feature_selector_t) 2}, + {HB_TAG ('o','r','d','n'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION, HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION}, + {HB_TAG ('p','a','l','t'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('p','c','a','p'), HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS, HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE}, + {HB_TAG ('p','k','n','a'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('p','n','u','m'), HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS, (hb_aat_layout_feature_selector_t) 4}, + {HB_TAG ('p','w','i','d'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('q','w','i','d'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('r','l','i','g'), HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF}, + {HB_TAG ('r','u','b','y'), HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA, HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF}, + {HB_TAG ('s','i','n','f'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION, HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION}, + {HB_TAG ('s','m','c','p'), HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE, HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS, HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE}, + {HB_TAG ('s','m','p','l'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('s','s','0','1'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF}, + {HB_TAG ('s','s','0','2'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF}, + {HB_TAG ('s','s','0','3'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF}, + {HB_TAG ('s','s','0','4'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF}, + {HB_TAG ('s','s','0','5'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF}, + {HB_TAG ('s','s','0','6'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF}, + {HB_TAG ('s','s','0','7'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF}, + {HB_TAG ('s','s','0','8'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF}, + {HB_TAG ('s','s','0','9'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF}, + {HB_TAG ('s','s','1','0'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF}, + {HB_TAG ('s','s','1','1'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF}, + {HB_TAG ('s','s','1','2'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF}, + {HB_TAG ('s','s','1','3'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF}, + {HB_TAG ('s','s','1','4'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF}, + {HB_TAG ('s','s','1','5'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF}, + {HB_TAG ('s','s','1','6'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF}, + {HB_TAG ('s','s','1','7'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF}, + {HB_TAG ('s','s','1','8'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF}, + {HB_TAG ('s','s','1','9'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF}, + {HB_TAG ('s','s','2','0'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF}, + {HB_TAG ('s','u','b','s'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION, HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION}, + {HB_TAG ('s','u','p','s'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION, HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION}, + {HB_TAG ('s','w','s','h'), HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES, HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF}, + {HB_TAG ('t','i','t','l'), HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS, HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS, HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS}, + {HB_TAG ('t','n','a','m'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('t','n','u','m'), HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS, (hb_aat_layout_feature_selector_t) 4}, + {HB_TAG ('t','r','a','d'), HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE, HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS, (hb_aat_layout_feature_selector_t) 16}, + {HB_TAG ('t','w','i','d'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('u','n','i','c'), HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE, (hb_aat_layout_feature_selector_t) 14, (hb_aat_layout_feature_selector_t) 15}, + {HB_TAG ('v','a','l','t'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('v','e','r','t'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION, HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF}, + {HB_TAG ('v','h','a','l'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('v','k','n','a'), HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF}, + {HB_TAG ('v','p','a','l'), HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING, HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT, (hb_aat_layout_feature_selector_t) 7}, + {HB_TAG ('v','r','t','2'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION, HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF}, + {HB_TAG ('v','r','t','r'), HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION, (hb_aat_layout_feature_selector_t) 2, (hb_aat_layout_feature_selector_t) 3}, + {HB_TAG ('z','e','r','o'), HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS, HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF}, +}; + +/** + * hb_aat_layout_find_feature_mapping: + * @tag: The requested #hb_tag_t feature tag + * + * Fetches the AAT feature-and-selector combination that corresponds + * to a given OpenType feature tag. + * + * Return value: the AAT features and selectors corresponding to the + * OpenType feature tag queried + * + **/ +const hb_aat_feature_mapping_t * +hb_aat_layout_find_feature_mapping (hb_tag_t tag) +{ + return hb_sorted_array (feature_mappings).bsearch (tag); +} +#endif + + +#ifndef HB_NO_AAT + +/* + * mort/morx/kerx/trak + */ + + +void +hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper, + hb_aat_map_t *map) +{ + const AAT::morx& morx = *mapper->face->table.morx; + if (morx.has_data ()) + { + morx.compile_flags (mapper, map); + return; + } + + const AAT::mort& mort = *mapper->face->table.mort; + if (mort.has_data ()) + { + mort.compile_flags (mapper, map); + return; + } +} + + +/** + * hb_aat_layout_has_substitution: + * @face: #hb_face_t to work upon + * + * Tests whether the specified face includes any substitutions in the + * `morx` or `mort` tables. + * + * Note: does not examine the `GSUB` table. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.3.0 + */ +hb_bool_t +hb_aat_layout_has_substitution (hb_face_t *face) +{ + return face->table.morx->has_data () || + face->table.mort->has_data (); +} + +void +hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features, + unsigned num_features) +{ + hb_aat_map_builder_t builder (font->face, plan->props); + for (unsigned i = 0; i < num_features; i++) + builder.add_feature (features[i]); + hb_aat_map_t map; + builder.compile (map); + + hb_blob_t *morx_blob = font->face->table.morx.get_blob (); + const AAT::morx& morx = *morx_blob->as (); + if (morx.has_data ()) + { + AAT::hb_aat_apply_context_t c (plan, font, buffer, morx_blob); + if (!buffer->message (font, "start table morx")) return; + morx.apply (&c, map); + (void) buffer->message (font, "end table morx"); + return; + } + + hb_blob_t *mort_blob = font->face->table.mort.get_blob (); + const AAT::mort& mort = *mort_blob->as (); + if (mort.has_data ()) + { + AAT::hb_aat_apply_context_t c (plan, font, buffer, mort_blob); + if (!buffer->message (font, "start table mort")) return; + mort.apply (&c, map); + (void) buffer->message (font, "end table mort"); + return; + } +} + +void +hb_aat_layout_zero_width_deleted_glyphs (hb_buffer_t *buffer) +{ + unsigned int count = buffer->len; + hb_glyph_info_t *info = buffer->info; + hb_glyph_position_t *pos = buffer->pos; + for (unsigned int i = 0; i < count; i++) + if (unlikely (info[i].codepoint == AAT::DELETED_GLYPH)) + pos[i].x_advance = pos[i].y_advance = pos[i].x_offset = pos[i].y_offset = 0; +} + +static bool +is_deleted_glyph (const hb_glyph_info_t *info) +{ + return info->codepoint == AAT::DELETED_GLYPH; +} + +void +hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer) +{ + buffer->delete_glyphs_inplace (is_deleted_glyph); +} + +/** + * hb_aat_layout_has_positioning: + * @face: #hb_face_t to work upon + * + * Tests whether the specified face includes any positioning information + * in the `kerx` table. + * + * Note: does not examine the `GPOS` table. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.3.0 + */ +hb_bool_t +hb_aat_layout_has_positioning (hb_face_t *face) +{ + return face->table.kerx->has_data (); +} + +void +hb_aat_layout_position (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer) +{ + hb_blob_t *kerx_blob = font->face->table.kerx.get_blob (); + const AAT::kerx& kerx = *kerx_blob->as (); + + AAT::hb_aat_apply_context_t c (plan, font, buffer, kerx_blob); + if (!buffer->message (font, "start table kerx")) return; + c.set_ankr_table (font->face->table.ankr.get ()); + kerx.apply (&c); + (void) buffer->message (font, "end table kerx"); +} + + +/** + * hb_aat_layout_has_tracking: + * @face:: #hb_face_t to work upon + * + * Tests whether the specified face includes any tracking information + * in the `trak` table. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.3.0 + */ +hb_bool_t +hb_aat_layout_has_tracking (hb_face_t *face) +{ + return face->table.trak->has_data (); +} + +void +hb_aat_layout_track (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer) +{ + const AAT::trak& trak = *font->face->table.trak; + + AAT::hb_aat_apply_context_t c (plan, font, buffer); + trak.apply (&c); +} + +/** + * hb_aat_layout_get_feature_types: + * @face: #hb_face_t to work upon + * @start_offset: offset of the first feature type to retrieve + * @feature_count: (inout) (optional): Input = the maximum number of feature types to return; + * Output = the actual number of feature types returned (may be zero) + * @features: (out caller-allocates) (array length=feature_count): Array of feature types found + * + * Fetches a list of the AAT feature types included in the specified face. + * + * Return value: Number of all available feature types. + * + * Since: 2.2.0 + */ +unsigned int +hb_aat_layout_get_feature_types (hb_face_t *face, + unsigned int start_offset, + unsigned int *feature_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_type_t *features /* OUT. May be NULL. */) +{ + return face->table.feat->get_feature_types (start_offset, feature_count, features); +} + +/** + * hb_aat_layout_feature_type_get_name_id: + * @face: #hb_face_t to work upon + * @feature_type: The #hb_aat_layout_feature_type_t of the requested feature type + * + * Fetches the name identifier of the specified feature type in the face's `name` table. + * + * Return value: Name identifier of the requested feature type + * + * Since: 2.2.0 + */ +hb_ot_name_id_t +hb_aat_layout_feature_type_get_name_id (hb_face_t *face, + hb_aat_layout_feature_type_t feature_type) +{ + return face->table.feat->get_feature_name_id (feature_type); +} + +/** + * hb_aat_layout_feature_type_get_selector_infos: + * @face: #hb_face_t to work upon + * @feature_type: The #hb_aat_layout_feature_type_t of the requested feature type + * @start_offset: offset of the first feature type to retrieve + * @selector_count: (inout) (optional): Input = the maximum number of selectors to return; + * Output = the actual number of selectors returned (may be zero) + * @selectors: (out caller-allocates) (array length=selector_count) (optional): + * A buffer pointer. The selectors available for the feature type queries. + * @default_index: (out) (optional): The index of the feature's default selector, if any + * + * Fetches a list of the selectors available for the specified feature in the given face. + * + * If upon return, @default_index is set to #HB_AAT_LAYOUT_NO_SELECTOR_INDEX, then + * the feature type is non-exclusive. Otherwise, @default_index is the index of + * the selector that is selected by default. + * + * Return value: Number of all available feature selectors + * + * Since: 2.2.0 + */ +unsigned int +hb_aat_layout_feature_type_get_selector_infos (hb_face_t *face, + hb_aat_layout_feature_type_t feature_type, + unsigned int start_offset, + unsigned int *selector_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */ + unsigned int *default_index /* OUT. May be NULL. */) +{ + return face->table.feat->get_selector_infos (feature_type, start_offset, selector_count, selectors, default_index); +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-aat-layout.h b/gfx/harfbuzz/src/hb-aat-layout.h new file mode 100644 index 0000000000..9af2740088 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout.h @@ -0,0 +1,795 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#if !defined(HB_AAT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_AAT_LAYOUT_H +#define HB_AAT_LAYOUT_H + +#include "hb.h" + +#include "hb-ot.h" + +HB_BEGIN_DECLS + +/** + * hb_aat_layout_feature_type_t: + * @HB_AAT_LAYOUT_FEATURE_TYPE_INVALID: Initial, unset feature type + * @HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC: [All Typographic Features](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type0) + * @HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES: [Ligatures](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type1) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CURISVE_CONNECTION: [Cursive Connection](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type2) + * @HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE: [Letter Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type3) + * @HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION: [Vertical Substitution](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type4) + * @HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT: [Linguistic Rearrangement](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type5) + * @HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING: [Number Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type6) + * @HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE: [Smart Swash](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type8) + * @HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE: [Diacritics](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type9) + * @HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION: [Vertical Position](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type10) + * @HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS: [Fractions](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type11) + * @HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE: [Overlapping Characters](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type13) + * @HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS: [Typographic Extras](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type14) + * @HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS: [Mathematical Extras](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type15) + * @HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE: [Ornament Sets](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type16) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES: [Character Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type17) + * @HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE: [Design Complexity](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type18) + * @HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS: [Style Options](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type19) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE: [Character Shape](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type20) + * @HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE: [Number Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type21) + * @HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING: [Text Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type22) + * @HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION: [Transliteration](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type23) + * @HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE: [Annotation](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type24) + * @HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE: [Kana Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type25) + * @HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE: [Ideographic Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type26) + * @HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE: [Unicode Decomposition](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type27) + * @HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA: [Ruby Kana](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type28) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE: [CJK Symbol Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type29) + * @HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE: [Ideographic Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type30) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE: [CJK Vertical Roman Placement](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type31) + * @HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN: [Italic CJK Roman](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type32) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT: [Case Sensitive Layout](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type33) + * @HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA: [Alternate Kana](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type34) + * @HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES: [Stylistic Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type35) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES: [Contextual Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type36) + * @HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE: [Lower Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type37) + * @HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE: [Upper Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type38) + * @HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE: [Language Tag](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type39) + * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE: [CJK Roman Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type103) + * + * The possible feature types defined for AAT shaping, from Apple [Font Feature Registry](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html). + * + * Since: 2.2.0 + */ +typedef enum +{ + HB_AAT_LAYOUT_FEATURE_TYPE_INVALID = 0xFFFF, + + HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC = 0, + HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES = 1, + HB_AAT_LAYOUT_FEATURE_TYPE_CURISVE_CONNECTION = 2, + HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE = 3, + HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION = 4, + HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT = 5, + HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING = 6, + HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE = 8, + HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE = 9, + HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION = 10, + HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS = 11, + HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE = 13, + HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS = 14, + HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS = 15, + HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE = 16, + HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES = 17, + HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE = 18, + HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS = 19, + HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE = 20, + HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE = 21, + HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING = 22, + HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION = 23, + HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE = 24, + HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE = 25, + HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE = 26, + HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE = 27, + HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA = 28, + HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE = 29, + HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE = 30, + HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE = 31, + HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN = 32, + HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT = 33, + HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA = 34, + HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES = 35, + HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES = 36, + HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE = 37, + HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE = 38, + HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE = 39, + HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE = 103, + + /*< private >*/ + _HB_AAT_LAYOUT_FEATURE_TYPE_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/ +} hb_aat_layout_feature_type_t; + +/** + * hb_aat_layout_feature_selector_t: + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID: Initial, unset feature selector + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UNCONNECTED: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PARTIALLY_CONNECTED: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CURSIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_AND_LOWER_CASE: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_CAPS: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_LOWER_CASE: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS_AND_SMALL_CAPS: Deprecated + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SHOW_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HIDE_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DECOMPOSE_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ORNAMENTS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DINGBATS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PI_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FLEURONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DECORATIVE_BORDERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INTERNATIONAL_SYMBOLS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATH_SYMBOLS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ALTERNATES: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL1: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL2: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL3: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL4: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL5: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DISPLAY_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ENGRAVED_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ILLUMINATED_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HIRAGANA_TO_KATAKANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_KATAKANA_TO_HIRAGANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_KANA_TO_ROMANIZATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_HIRAGANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_KATAKANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROUNDED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CIRCLE_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_CIRCLE_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PARENTHESIS_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIOD_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMAN_NUMERAL_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAMOND_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_ROUNDED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_KANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_KANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_RUBY_KANA: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF instead + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON instead + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_SYMBOL_ALTERNATIVES: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_IDEOGRAPHIC_ALTERNATIVES: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_CENTERED: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_HBASELINE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_ITALIC_ROMAN: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF instead + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON instead + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLISTIC_ALTERNATES: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE + * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE + * + * The selectors defined for specifying AAT feature settings. + * + * Since: 2.2.0 + */ +typedef enum +{ + HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID = 0xFFFF, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_OFF = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_ON = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_OFF = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_ON = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_OFF = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_ON = 10, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_OFF = 11, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_ON = 12, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_OFF = 13, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_ON = 14, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_OFF = 15, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_ON = 16, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_OFF = 17, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON = 18, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF = 19, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON = 20, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF = 21, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_UNCONNECTED = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PARTIALLY_CONNECTED = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CURSIVE = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_AND_LOWER_CASE = 0, /* deprecated */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_CAPS = 1, /* deprecated */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_LOWER_CASE = 2, /* deprecated */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS = 3, /* deprecated */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS = 4, /* deprecated */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS_AND_SMALL_CAPS = 5, /* deprecated */ + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_OFF = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_NUMBERS = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_NUMBERS = 3, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_OFF = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_ON = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_OFF = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_ON = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_OFF = 9, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_SHOW_DIACRITICS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HIDE_DIACRITICS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DECOMPOSE_DIACRITICS = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS = 4, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_OFF = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_ON = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_OFF = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_ON = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_OFF = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_ON = 10, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_OFF = 11, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_OFF = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_ON = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_OFF = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_ON = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_OFF = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON = 10, + HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF = 11, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ORNAMENTS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DINGBATS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PI_CHARACTERS = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_FLEURONS = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DECORATIVE_BORDERS = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INTERNATIONAL_SYMBOLS = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_MATH_SYMBOLS = 6, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ALTERNATES = 0, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL1 = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL2 = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL3 = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL4 = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL5 = 4, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DISPLAY_TEXT = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ENGRAVED_TEXT = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ILLUMINATED_CAPS = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TALL_CAPS = 5, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_ONE = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_TWO = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_THREE = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FOUR = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FIVE = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS = 10, + HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS = 11, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS = 12, + HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS = 13, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS = 14, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT = 6, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HIRAGANA_TO_KATAKANA = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_KATAKANA_TO_HIRAGANA = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_KANA_TO_ROMANIZATION = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_HIRAGANA = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_KATAKANA = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_ONE = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_TWO = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_THREE = 9, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ANNOTATION = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_BOX_ANNOTATION = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ROUNDED_BOX_ANNOTATION = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CIRCLE_ANNOTATION = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_CIRCLE_ANNOTATION = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PARENTHESIS_ANNOTATION = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIOD_ANNOTATION = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMAN_NUMERAL_ANNOTATION = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAMOND_ANNOTATION = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_BOX_ANNOTATION = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_ROUNDED_BOX_ANNOTATION= 10, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_KANA = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_KANA = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_IDEOGRAPHS = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_IDEOGRAPHS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_IDEOGRAPHS = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_OFF = 5, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_RUBY_KANA = 0, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF instead */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA = 1, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON instead */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF = 3, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_SYMBOL_ALTERNATIVES = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_ONE = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_TWO = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_THREE = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FOUR = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FIVE = 5, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_IDEOGRAPHIC_ALTERNATIVES = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_ONE = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_TWO = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_THREE = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FOUR = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FIVE = 5, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_CENTERED = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_HBASELINE = 1, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_ITALIC_ROMAN = 0, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF instead */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN = 1, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON instead */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF = 3, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF = 3, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF = 3, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLISTIC_ALTERNATES = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF = 5, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON = 6, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF = 7, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON = 8, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF = 9, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON = 10, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF = 11, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON = 12, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF = 13, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON = 14, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF = 15, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON = 16, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF = 17, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON = 18, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF = 19, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON = 20, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF = 21, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON = 22, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF = 23, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON = 24, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF = 25, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON = 26, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF = 27, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON = 28, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF = 29, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON = 30, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF = 31, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON = 32, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF = 33, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON = 34, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF = 35, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON = 36, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF = 37, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON = 38, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF = 39, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON = 40, + HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF = 41, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF = 3, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON = 4, + HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF= 5, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS = 2, + + /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE */ + HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_CJK_ROMAN = 0, + HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_CJK_ROMAN = 1, + HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_CJK_ROMAN = 2, + HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_CJK_ROMAN = 3, + + /*< private >*/ + _HB_AAT_LAYOUT_FEATURE_SELECTOR_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/ +} hb_aat_layout_feature_selector_t; + +HB_EXTERN unsigned int +hb_aat_layout_get_feature_types (hb_face_t *face, + unsigned int start_offset, + unsigned int *feature_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_type_t *features /* OUT. May be NULL. */); + +HB_EXTERN hb_ot_name_id_t +hb_aat_layout_feature_type_get_name_id (hb_face_t *face, + hb_aat_layout_feature_type_t feature_type); + +/** + * hb_aat_layout_feature_selector_info_t: + * @name_id: The selector's name identifier + * @enable: The value to turn the selector on + * @disable: The value to turn the selector off + * + * Structure representing a setting for an #hb_aat_layout_feature_type_t. + */ +typedef struct hb_aat_layout_feature_selector_info_t { + hb_ot_name_id_t name_id; + hb_aat_layout_feature_selector_t enable; + hb_aat_layout_feature_selector_t disable; + /*< private >*/ + unsigned int reserved; +} hb_aat_layout_feature_selector_info_t; + +/** + * HB_AAT_LAYOUT_NO_SELECTOR_INDEX + * + * Used when getting or setting AAT feature selectors. Indicates that + * there is no selector index corresponding to the selector of interest. + * + */ +#define HB_AAT_LAYOUT_NO_SELECTOR_INDEX 0xFFFFu + +HB_EXTERN unsigned int +hb_aat_layout_feature_type_get_selector_infos (hb_face_t *face, + hb_aat_layout_feature_type_t feature_type, + unsigned int start_offset, + unsigned int *selector_count, /* IN/OUT. May be NULL. */ + hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */ + unsigned int *default_index /* OUT. May be NULL. */); + + +/* + * morx/mort + */ + +HB_EXTERN hb_bool_t +hb_aat_layout_has_substitution (hb_face_t *face); + + +/* + * kerx + */ + +HB_EXTERN hb_bool_t +hb_aat_layout_has_positioning (hb_face_t *face); + + +/* + * trak + */ + +HB_EXTERN hb_bool_t +hb_aat_layout_has_tracking (hb_face_t *face); + + +HB_END_DECLS + +#endif /* HB_AAT_LAYOUT_H */ diff --git a/gfx/harfbuzz/src/hb-aat-layout.hh b/gfx/harfbuzz/src/hb-aat-layout.hh new file mode 100644 index 0000000000..15c382aa92 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-layout.hh @@ -0,0 +1,77 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_LAYOUT_HH +#define HB_AAT_LAYOUT_HH + +#include "hb.hh" + +#include "hb-ot-shape.hh" +#include "hb-aat-ltag-table.hh" + +struct hb_aat_feature_mapping_t +{ + hb_tag_t otFeatureTag; + hb_aat_layout_feature_type_t aatFeatureType; + hb_aat_layout_feature_selector_t selectorToEnable; + hb_aat_layout_feature_selector_t selectorToDisable; + + int cmp (hb_tag_t key) const + { return key < otFeatureTag ? -1 : key > otFeatureTag ? 1 : 0; } +}; + +HB_INTERNAL const hb_aat_feature_mapping_t * +hb_aat_layout_find_feature_mapping (hb_tag_t tag); + +HB_INTERNAL void +hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper, + hb_aat_map_t *map); + +HB_INTERNAL void +hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features, + unsigned num_features); + +HB_INTERNAL void +hb_aat_layout_zero_width_deleted_glyphs (hb_buffer_t *buffer); + +HB_INTERNAL void +hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer); + +HB_INTERNAL void +hb_aat_layout_position (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer); + +HB_INTERNAL void +hb_aat_layout_track (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer); + + +#endif /* HB_AAT_LAYOUT_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-ltag-table.hh b/gfx/harfbuzz/src/hb-aat-ltag-table.hh new file mode 100644 index 0000000000..6d771e1513 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-ltag-table.hh @@ -0,0 +1,92 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_LTAG_TABLE_HH +#define HB_AAT_LTAG_TABLE_HH + +#include "hb-open-type.hh" + +/* + * ltag -- Language Tag + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ltag.html + */ +#define HB_AAT_TAG_ltag HB_TAG('l','t','a','g') + + +namespace AAT { + +using namespace OT; + + +struct FTStringRange +{ + friend struct ltag; + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && (base+tag).sanitize (c, length)); + } + + protected: + NNOffset16To> + tag; /* Offset from the start of the table to + * the beginning of the string */ + HBUINT16 length; /* String length (in bytes) */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct ltag +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_ltag; + + hb_language_t get_language (unsigned int i) const + { + const FTStringRange &range = tagRanges[i]; + return hb_language_from_string ((const char *) (this+range.tag).arrayZ, + range.length); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + version >= 1 && + tagRanges.sanitize (c, this))); + } + + protected: + HBUINT32 version; /* Table version; currently 1 */ + HBUINT32 flags; /* Table flags; currently none defined */ + Array32Of + tagRanges; /* Range for each tag's string */ + public: + DEFINE_SIZE_ARRAY (12, tagRanges); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_LTAG_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-aat-map.cc b/gfx/harfbuzz/src/hb-aat-map.cc new file mode 100644 index 0000000000..5bdb8004f2 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-map.cc @@ -0,0 +1,172 @@ +/* + * Copyright © 2009,2010 Red Hat, Inc. + * Copyright © 2010,2011,2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifndef HB_NO_AAT_SHAPE + +#include "hb-aat-map.hh" + +#include "hb-aat-layout.hh" +#include "hb-aat-layout-feat-table.hh" + + +void hb_aat_map_builder_t::add_feature (const hb_feature_t &feature) +{ + if (!face->table.feat->has_data ()) return; + + if (feature.tag == HB_TAG ('a','a','l','t')) + { + if (!face->table.feat->exposes_feature (HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES)) + return; + feature_range_t *range = features.push(); + range->start = feature.start; + range->end = feature.end; + range->info.type = HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES; + range->info.setting = (hb_aat_layout_feature_selector_t) feature.value; + range->info.seq = features.length; + range->info.is_exclusive = true; + return; + } + + const hb_aat_feature_mapping_t *mapping = hb_aat_layout_find_feature_mapping (feature.tag); + if (!mapping) return; + + const AAT::FeatureName* feature_name = &face->table.feat->get_feature (mapping->aatFeatureType); + if (!feature_name->has_data ()) + { + /* Special case: Chain::compile_flags will fall back to the deprecated version of + * small-caps if necessary, so we need to check for that possibility. + * https://github.com/harfbuzz/harfbuzz/issues/2307 */ + if (mapping->aatFeatureType == HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE && + mapping->selectorToEnable == HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS) + { + feature_name = &face->table.feat->get_feature (HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE); + if (!feature_name->has_data ()) return; + } + else return; + } + + feature_range_t *range = features.push(); + range->start = feature.start; + range->end = feature.end; + range->info.type = mapping->aatFeatureType; + range->info.setting = feature.value ? mapping->selectorToEnable : mapping->selectorToDisable; + range->info.seq = features.length; + range->info.is_exclusive = feature_name->is_exclusive (); +} + +void +hb_aat_map_builder_t::compile (hb_aat_map_t &m) +{ + /* Compute active features per range, and compile each. */ + + /* Sort features by start/end events. */ + hb_vector_t feature_events; + for (unsigned int i = 0; i < features.length; i++) + { + auto &feature = features[i]; + + if (features[i].start == features[i].end) + continue; + + feature_event_t *event; + + event = feature_events.push (); + event->index = features[i].start; + event->start = true; + event->feature = feature.info; + + event = feature_events.push (); + event->index = features[i].end; + event->start = false; + event->feature = feature.info; + } + feature_events.qsort (); + /* Add a strategic final event. */ + { + feature_info_t feature; + feature.seq = features.length + 1; + + feature_event_t *event = feature_events.push (); + event->index = -1; /* This value does magic. */ + event->start = false; + event->feature = feature; + } + + /* Scan events and save features for each range. */ + hb_sorted_vector_t active_features; + unsigned int last_index = 0; + for (unsigned int i = 0; i < feature_events.length; i++) + { + feature_event_t *event = &feature_events[i]; + + if (event->index != last_index) + { + /* Save a snapshot of active features and the range. */ + + /* Sort features and merge duplicates */ + current_features = active_features; + range_first = last_index; + range_last = event->index - 1; + if (current_features.length) + { + current_features.qsort (); + unsigned int j = 0; + for (unsigned int i = 1; i < current_features.length; i++) + if (current_features[i].type != current_features[j].type || + /* Nonexclusive feature selectors come in even/odd pairs to turn a setting on/off + * respectively, so we mask out the low-order bit when checking for "duplicates" + * (selectors referring to the same feature setting) here. */ + (!current_features[i].is_exclusive && ((current_features[i].setting & ~1) != (current_features[j].setting & ~1)))) + current_features[++j] = current_features[i]; + current_features.shrink (j + 1); + } + + hb_aat_layout_compile_map (this, &m); + + last_index = event->index; + } + + if (event->start) + { + active_features.push (event->feature); + } else { + feature_info_t *feature = active_features.lsearch (event->feature); + if (feature) + active_features.remove_ordered (feature - active_features.arrayZ); + } + } + + for (auto &chain_flags : m.chain_flags) + // With our above setup this value is one less than desired; adjust it. + chain_flags.tail().cluster_last = HB_FEATURE_GLOBAL_END; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-aat-map.hh b/gfx/harfbuzz/src/hb-aat-map.hh new file mode 100644 index 0000000000..cb22ffee42 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat-map.hh @@ -0,0 +1,123 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_AAT_MAP_HH +#define HB_AAT_MAP_HH + +#include "hb.hh" + + +struct hb_aat_map_t +{ + friend struct hb_aat_map_builder_t; + + public: + struct range_flags_t + { + hb_mask_t flags; + unsigned cluster_first; + unsigned cluster_last; // end - 1 + }; + + public: + hb_vector_t> chain_flags; +}; + +struct hb_aat_map_builder_t +{ + public: + + HB_INTERNAL hb_aat_map_builder_t (hb_face_t *face_, + const hb_segment_properties_t props_) : + face (face_), + props (props_) {} + + HB_INTERNAL void add_feature (const hb_feature_t &feature); + + HB_INTERNAL void compile (hb_aat_map_t &m); + + public: + struct feature_info_t + { + hb_aat_layout_feature_type_t type; + hb_aat_layout_feature_selector_t setting; + bool is_exclusive; + unsigned seq; /* For stable sorting only. */ + + HB_INTERNAL static int cmp (const void *pa, const void *pb) + { + const feature_info_t *a = (const feature_info_t *) pa; + const feature_info_t *b = (const feature_info_t *) pb; + if (a->type != b->type) return (a->type < b->type ? -1 : 1); + if (!a->is_exclusive && + (a->setting & ~1) != (b->setting & ~1)) return (a->setting < b->setting ? -1 : 1); + return (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); + } + + /* compares type & setting only */ + int cmp (const feature_info_t& f) const + { + return (f.type != type) ? (f.type < type ? -1 : 1) : + (f.setting != setting) ? (f.setting < setting ? -1 : 1) : 0; + } + }; + + struct feature_range_t + { + feature_info_t info; + unsigned start; + unsigned end; + }; + + private: + struct feature_event_t + { + unsigned int index; + bool start; + feature_info_t feature; + + HB_INTERNAL static int cmp (const void *pa, const void *pb) { + const feature_event_t *a = (const feature_event_t *) pa; + const feature_event_t *b = (const feature_event_t *) pb; + return a->index < b->index ? -1 : a->index > b->index ? 1 : + a->start < b->start ? -1 : a->start > b->start ? 1 : + feature_info_t::cmp (&a->feature, &b->feature); + } + }; + + public: + hb_face_t *face; + hb_segment_properties_t props; + + public: + hb_sorted_vector_t features; + hb_sorted_vector_t current_features; + unsigned range_first = HB_FEATURE_GLOBAL_START; + unsigned range_last = HB_FEATURE_GLOBAL_END; +}; + + +#endif /* HB_AAT_MAP_HH */ diff --git a/gfx/harfbuzz/src/hb-aat.h b/gfx/harfbuzz/src/hb-aat.h new file mode 100644 index 0000000000..c14313d1e2 --- /dev/null +++ b/gfx/harfbuzz/src/hb-aat.h @@ -0,0 +1,38 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_H +#define HB_AAT_H +#define HB_AAT_H_IN + +#include "hb.h" + +#include "hb-aat-layout.h" + +HB_BEGIN_DECLS + +HB_END_DECLS + +#undef HB_AAT_H_IN +#endif /* HB_AAT_H */ diff --git a/gfx/harfbuzz/src/hb-algs.hh b/gfx/harfbuzz/src/hb-algs.hh new file mode 100644 index 0000000000..da383e050a --- /dev/null +++ b/gfx/harfbuzz/src/hb-algs.hh @@ -0,0 +1,1407 @@ +/* + * Copyright © 2017 Google, Inc. + * Copyright © 2019 Facebook, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + * Facebook Author(s): Behdad Esfahbod + */ + +#ifndef HB_ALGS_HH +#define HB_ALGS_HH + +#include "hb.hh" +#include "hb-meta.hh" +#include "hb-null.hh" +#include "hb-number.hh" + +#include +#include +#include +#include + +/* + * Flags + */ + +/* Enable bitwise ops on enums marked as flags_t */ +/* To my surprise, looks like the function resolver is happy to silently cast + * one enum to another... So this doesn't provide the type-checking that I + * originally had in mind... :(. + * + * For MSVC warnings, see: https://github.com/harfbuzz/harfbuzz/pull/163 + */ +#ifdef _MSC_VER +# pragma warning(disable:4200) +# pragma warning(disable:4800) +#endif +#define HB_MARK_AS_FLAG_T(T) \ + extern "C++" { \ + static inline constexpr T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \ + static inline constexpr T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \ + static inline constexpr T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \ + static inline constexpr unsigned operator ~ (T r) { return (~(unsigned) r); } \ + static inline T& operator |= (T &l, T r) { l = l | r; return l; } \ + static inline T& operator &= (T& l, T r) { l = l & r; return l; } \ + static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \ + } \ + static_assert (true, "") + +/* Useful for set-operations on small enums. + * For example, for testing "x ∈ {x1, x2, x3}" use: + * (FLAG_UNSAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3))) + */ +#define FLAG(x) (static_assert_expr ((unsigned)(x) < 32) + (((uint32_t) 1U) << (unsigned)(x))) +#define FLAG_UNSAFE(x) ((unsigned)(x) < 32 ? (((uint32_t) 1U) << (unsigned)(x)) : 0) +#define FLAG_RANGE(x,y) (static_assert_expr ((x) < (y)) + FLAG(y+1) - FLAG(x)) +#define FLAG64(x) (static_assert_expr ((unsigned)(x) < 64) + (((uint64_t) 1ULL) << (unsigned)(x))) +#define FLAG64_UNSAFE(x) ((unsigned)(x) < 64 ? (((uint64_t) 1ULL) << (unsigned)(x)) : 0) + + +/* + * Big-endian integers. + */ + +/* Endian swap, used in Windows related backends */ +static inline constexpr uint16_t hb_uint16_swap (uint16_t v) +{ return (v >> 8) | (v << 8); } +static inline constexpr uint32_t hb_uint32_swap (uint32_t v) +{ return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16); } + +template +struct BEInt; +template +struct BEInt +{ + public: + BEInt () = default; + constexpr BEInt (Type V) : v {uint8_t (V)} {} + constexpr operator Type () const { return v; } + private: uint8_t v; +}; +template +struct BEInt +{ + public: + BEInt () = default; + constexpr BEInt (Type V) : v {uint8_t ((V >> 8) & 0xFF), + uint8_t ((V ) & 0xFF)} {} + + struct __attribute__((packed)) packed_uint16_t { uint16_t v; }; + constexpr operator Type () const + { +#if defined(__OPTIMIZE__) && !defined(HB_NO_PACKED) && \ + defined(__BYTE_ORDER) && \ + (__BYTE_ORDER == __BIG_ENDIAN || \ + (__BYTE_ORDER == __LITTLE_ENDIAN && \ + hb_has_builtin(__builtin_bswap16))) + /* Spoon-feed the compiler a big-endian integer with alignment 1. + * https://github.com/harfbuzz/harfbuzz/pull/1398 */ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap16 (((packed_uint16_t *) v)->v); +#else /* __BYTE_ORDER == __BIG_ENDIAN */ + return ((packed_uint16_t *) v)->v; +#endif +#else + return (v[0] << 8) + + (v[1] ); +#endif + } + private: uint8_t v[2]; +}; +template +struct BEInt +{ + static_assert (!std::is_signed::value, ""); + public: + BEInt () = default; + constexpr BEInt (Type V) : v {uint8_t ((V >> 16) & 0xFF), + uint8_t ((V >> 8) & 0xFF), + uint8_t ((V ) & 0xFF)} {} + + constexpr operator Type () const { return (v[0] << 16) + + (v[1] << 8) + + (v[2] ); } + private: uint8_t v[3]; +}; +template +struct BEInt +{ + public: + BEInt () = default; + constexpr BEInt (Type V) : v {uint8_t ((V >> 24) & 0xFF), + uint8_t ((V >> 16) & 0xFF), + uint8_t ((V >> 8) & 0xFF), + uint8_t ((V ) & 0xFF)} {} + + struct __attribute__((packed)) packed_uint32_t { uint32_t v; }; + constexpr operator Type () const { +#if defined(__OPTIMIZE__) && !defined(HB_NO_PACKED) && \ + defined(__BYTE_ORDER) && \ + (__BYTE_ORDER == __BIG_ENDIAN || \ + (__BYTE_ORDER == __LITTLE_ENDIAN && \ + hb_has_builtin(__builtin_bswap32))) + /* Spoon-feed the compiler a big-endian integer with alignment 1. + * https://github.com/harfbuzz/harfbuzz/pull/1398 */ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap32 (((packed_uint32_t *) v)->v); +#else /* __BYTE_ORDER == __BIG_ENDIAN */ + return ((packed_uint32_t *) v)->v; +#endif +#else + return (v[0] << 24) + + (v[1] << 16) + + (v[2] << 8) + + (v[3] ); +#endif + } + private: uint8_t v[4]; +}; + +/* Floats. */ + +/* We want our rounding towards +infinity. */ +static inline float +_hb_roundf (float x) { return floorf (x + .5f); } +#define roundf(x) _hb_roundf(x) + + +/* Encodes three unsigned integers in one 64-bit number. If the inputs have more than 21 bits, + * values will be truncated / overlap, and might not decode exactly. */ +#define HB_CODEPOINT_ENCODE3(x,y,z) (((uint64_t) (x) << 42) | ((uint64_t) (y) << 21) | (uint64_t) (z)) +#define HB_CODEPOINT_DECODE3_1(v) ((hb_codepoint_t) ((v) >> 42)) +#define HB_CODEPOINT_DECODE3_2(v) ((hb_codepoint_t) ((v) >> 21) & 0x1FFFFFu) +#define HB_CODEPOINT_DECODE3_3(v) ((hb_codepoint_t) (v) & 0x1FFFFFu) + +/* Custom encoding used by hb-ucd. */ +#define HB_CODEPOINT_ENCODE3_11_7_14(x,y,z) (((uint32_t) ((x) & 0x07FFu) << 21) | (((uint32_t) (y) & 0x007Fu) << 14) | (uint32_t) ((z) & 0x3FFFu)) +#define HB_CODEPOINT_DECODE3_11_7_14_1(v) ((hb_codepoint_t) ((v) >> 21)) +#define HB_CODEPOINT_DECODE3_11_7_14_2(v) ((hb_codepoint_t) (((v) >> 14) & 0x007Fu) | 0x0300) +#define HB_CODEPOINT_DECODE3_11_7_14_3(v) ((hb_codepoint_t) (v) & 0x3FFFu) + + +struct +{ + /* Note. This is dangerous in that if it's passed an rvalue, it returns rvalue-reference. */ + template constexpr auto + operator () (T&& v) const HB_AUTO_RETURN ( std::forward (v) ) +} +HB_FUNCOBJ (hb_identity); +struct +{ + /* Like identity(), but only retains lvalue-references. Rvalues are returned as rvalues. */ + template constexpr T& + operator () (T& v) const { return v; } + + template constexpr hb_remove_reference + operator () (T&& v) const { return v; } +} +HB_FUNCOBJ (hb_lidentity); +struct +{ + /* Like identity(), but always returns rvalue. */ + template constexpr hb_remove_reference + operator () (T&& v) const { return v; } +} +HB_FUNCOBJ (hb_ridentity); + +struct +{ + template constexpr bool + operator () (T&& v) const { return bool (std::forward (v)); } +} +HB_FUNCOBJ (hb_bool); + +struct +{ + private: + + template constexpr auto + impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, hb_deref (v).hash ()) + + template constexpr auto + impl (const T& v, hb_priority<0>) const HB_RETURN (uint32_t, std::hash>{} (hb_deref (v))) + + public: + + template constexpr auto + operator () (const T& v) const HB_RETURN (uint32_t, impl (v, hb_prioritize)) +} +HB_FUNCOBJ (hb_hash); + + +struct +{ + private: + + /* Pointer-to-member-function. */ + template auto + impl (Appl&& a, hb_priority<2>, T &&v, Ts&&... ds) const HB_AUTO_RETURN + ((hb_deref (std::forward (v)).*std::forward (a)) (std::forward (ds)...)) + + /* Pointer-to-member. */ + template auto + impl (Appl&& a, hb_priority<1>, T &&v) const HB_AUTO_RETURN + ((hb_deref (std::forward (v))).*std::forward (a)) + + /* Operator(). */ + template auto + impl (Appl&& a, hb_priority<0>, Ts&&... ds) const HB_AUTO_RETURN + (hb_deref (std::forward (a)) (std::forward (ds)...)) + + public: + + template auto + operator () (Appl&& a, Ts&&... ds) const HB_AUTO_RETURN + ( + impl (std::forward (a), + hb_prioritize, + std::forward (ds)...) + ) +} +HB_FUNCOBJ (hb_invoke); + +template +struct hb_partial_t +{ + hb_partial_t (Appl a, V v) : a (a), v (v) {} + + static_assert (Pos > 0, ""); + + template auto + operator () (Ts&& ...ds) -> decltype (hb_invoke (hb_declval (Appl), + hb_declval (V), + hb_declval (Ts)...)) + { + return hb_invoke (std::forward (a), + std::forward (v), + std::forward (ds)...); + } + template auto + operator () (T0&& d0, Ts&& ...ds) -> decltype (hb_invoke (hb_declval (Appl), + hb_declval (T0), + hb_declval (V), + hb_declval (Ts)...)) + { + return hb_invoke (std::forward (a), + std::forward (d0), + std::forward (v), + std::forward (ds)...); + } + + private: + hb_reference_wrapper a; + V v; +}; +template +auto hb_partial (Appl&& a, V&& v) HB_AUTO_RETURN +(( hb_partial_t (a, v) )) + +/* The following, HB_PARTIALIZE, macro uses a particular corner-case + * of C++11 that is not particularly well-supported by all compilers. + * What's happening is that it's using "this" in a trailing return-type + * via decltype(). Broken compilers deduce the type of "this" pointer + * in that context differently from what it resolves to in the body + * of the function. + * + * One probable cause of this is that at the time of trailing return + * type declaration, "this" points to an incomplete type, whereas in + * the function body the type is complete. That doesn't justify the + * error in any way, but is probably what's happening. + * + * In the case of MSVC, we get around this by using C++14 "decltype(auto)" + * which deduces the type from the actual return statement. For gcc 4.8 + * we use "+this" instead of "this" which produces an rvalue that seems + * to be deduced as the same type with this particular compiler, and seem + * to be fine as default code path as well. + */ +#ifdef _MSC_VER +/* https://github.com/harfbuzz/harfbuzz/issues/1730 */ \ +#define HB_PARTIALIZE(Pos) \ + template \ + decltype(auto) operator () (_T&& _v) const \ + { return hb_partial (this, std::forward<_T> (_v)); } \ + static_assert (true, "") +#else +/* https://github.com/harfbuzz/harfbuzz/issues/1724 */ +#define HB_PARTIALIZE(Pos) \ + template \ + auto operator () (_T&& _v) const HB_AUTO_RETURN \ + (hb_partial (+this, std::forward<_T> (_v))) \ + static_assert (true, "") +#endif + + +struct +{ + private: + + template auto + impl (Pred&& p, Val &&v, hb_priority<1>) const HB_AUTO_RETURN + ( + hb_deref (std::forward (p)).has (std::forward (v)) + ) + + template auto + impl (Pred&& p, Val &&v, hb_priority<0>) const HB_AUTO_RETURN + ( + hb_invoke (std::forward (p), + std::forward (v)) + ) + + public: + + template auto + operator () (Pred&& p, Val &&v) const HB_RETURN (bool, + impl (std::forward (p), + std::forward (v), + hb_prioritize) + ) +} +HB_FUNCOBJ (hb_has); + +struct +{ + private: + + template auto + impl (Pred&& p, Val &&v, hb_priority<1>) const HB_AUTO_RETURN + ( + hb_has (std::forward (p), + std::forward (v)) + ) + + template auto + impl (Pred&& p, Val &&v, hb_priority<0>) const HB_AUTO_RETURN + ( + std::forward (p) == std::forward (v) + ) + + public: + + template auto + operator () (Pred&& p, Val &&v) const HB_RETURN (bool, + impl (std::forward (p), + std::forward (v), + hb_prioritize) + ) +} +HB_FUNCOBJ (hb_match); + +struct +{ + private: + + template auto + impl (Proj&& f, Val &&v, hb_priority<2>) const HB_AUTO_RETURN + ( + hb_deref (std::forward (f)).get (std::forward (v)) + ) + + template auto + impl (Proj&& f, Val &&v, hb_priority<1>) const HB_AUTO_RETURN + ( + hb_invoke (std::forward (f), + std::forward (v)) + ) + + template auto + impl (Proj&& f, Val &&v, hb_priority<0>) const HB_AUTO_RETURN + ( + std::forward (f)[std::forward (v)] + ) + + public: + + template auto + operator () (Proj&& f, Val &&v) const HB_AUTO_RETURN + ( + impl (std::forward (f), + std::forward (v), + hb_prioritize) + ) +} +HB_FUNCOBJ (hb_get); + +struct +{ + private: + + template auto + impl (T1&& v1, T2 &&v2, hb_priority<3>) const HB_AUTO_RETURN + ( + std::forward (v2).cmp (std::forward (v1)) == 0 + ) + + template auto + impl (T1&& v1, T2 &&v2, hb_priority<2>) const HB_AUTO_RETURN + ( + std::forward (v1).cmp (std::forward (v2)) == 0 + ) + + template auto + impl (T1&& v1, T2 &&v2, hb_priority<1>) const HB_AUTO_RETURN + ( + std::forward (v1) == std::forward (v2) + ) + + template auto + impl (T1&& v1, T2 &&v2, hb_priority<0>) const HB_AUTO_RETURN + ( + std::forward (v2) == std::forward (v1) + ) + + public: + + template auto + operator () (T1&& v1, T2 &&v2) const HB_AUTO_RETURN + ( + impl (std::forward (v1), + std::forward (v2), + hb_prioritize) + ) +} +HB_FUNCOBJ (hb_equal); + +struct +{ + template void + operator () (T& a, T& b) const + { + using std::swap; // allow ADL + swap (a, b); + } +} +HB_FUNCOBJ (hb_swap); + + +template +struct hb_pair_t +{ + typedef T1 first_t; + typedef T2 second_t; + typedef hb_pair_t pair_t; + + template ::value && + std::is_default_constructible::value)> + hb_pair_t () : first (), second () {} + hb_pair_t (T1 a, T2 b) : first (std::forward (a)), second (std::forward (b)) {} + + template + operator hb_pair_t () { return hb_pair_t (first, second); } + + hb_pair_t reverse () const + { return hb_pair_t (second, first); } + + bool operator == (const pair_t& o) const { return first == o.first && second == o.second; } + bool operator != (const pair_t& o) const { return !(*this == o); } + bool operator < (const pair_t& o) const { return first < o.first || (first == o.first && second < o.second); } + bool operator >= (const pair_t& o) const { return !(*this < o); } + bool operator > (const pair_t& o) const { return first > o.first || (first == o.first && second > o.second); } + bool operator <= (const pair_t& o) const { return !(*this > o); } + + static int cmp (const void *pa, const void *pb) + { + pair_t *a = (pair_t *) pa; + pair_t *b = (pair_t *) pb; + + if (a->first < b->first) return -1; + if (a->first > b->first) return +1; + if (a->second < b->second) return -1; + if (a->second > b->second) return +1; + return 0; + } + + friend void swap (hb_pair_t& a, hb_pair_t& b) + { + hb_swap (a.first, b.first); + hb_swap (a.second, b.second); + } + + + T1 first; + T2 second; +}; +template static inline hb_pair_t +hb_pair (T1&& a, T2&& b) { return hb_pair_t (a, b); } + +struct +{ + template constexpr typename Pair::first_t + operator () (const Pair& pair) const { return pair.first; } +} +HB_FUNCOBJ (hb_first); + +struct +{ + template constexpr typename Pair::second_t + operator () (const Pair& pair) const { return pair.second; } +} +HB_FUNCOBJ (hb_second); + +/* Note. In min/max impl, we can use hb_type_identity for second argument. + * However, that would silently convert between different-signedness integers. + * Instead we accept two different types, such that compiler can err if + * comparing integers of different signedness. */ +struct +{ + template constexpr auto + operator () (T&& a, T2&& b) const HB_AUTO_RETURN + (a <= b ? a : b) +} +HB_FUNCOBJ (hb_min); +struct +{ + template constexpr auto + operator () (T&& a, T2&& b) const HB_AUTO_RETURN + (a >= b ? a : b) +} +HB_FUNCOBJ (hb_max); +struct +{ + template constexpr auto + operator () (T&& x, T2&& min, T3&& max) const HB_AUTO_RETURN + (hb_min (hb_max (std::forward (x), std::forward (min)), std::forward (max))) +} +HB_FUNCOBJ (hb_clamp); + +/* + * Bithacks. + */ + +/* Return the number of 1 bits in v. */ +template +static inline unsigned int +hb_popcount (T v) +{ +#if hb_has_builtin(__builtin_popcount) + if (sizeof (T) <= sizeof (unsigned int)) + return __builtin_popcount (v); +#endif + +#if hb_has_builtin(__builtin_popcountl) + if (sizeof (T) <= sizeof (unsigned long)) + return __builtin_popcountl (v); +#endif + +#if hb_has_builtin(__builtin_popcountll) + if (sizeof (T) <= sizeof (unsigned long long)) + return __builtin_popcountll (v); +#endif + + if (sizeof (T) <= 4) + { + /* "HACKMEM 169" */ + uint32_t y; + y = (v >> 1) &033333333333; + y = v - y - ((y >>1) & 033333333333); + return (((y + (y >> 3)) & 030707070707) % 077); + } + + if (sizeof (T) == 8) + { + uint64_t y = (uint64_t) v; + y -= ((y >> 1) & 0x5555555555555555ull); + y = (y & 0x3333333333333333ull) + (y >> 2 & 0x3333333333333333ull); + return ((y + (y >> 4)) & 0xf0f0f0f0f0f0f0full) * 0x101010101010101ull >> 56; + } + + if (sizeof (T) == 16) + { + unsigned int shift = 64; + return hb_popcount ((uint64_t) v) + hb_popcount ((uint64_t) (v >> shift)); + } + + assert (0); + return 0; /* Shut up stupid compiler. */ +} + +/* Returns the number of bits needed to store number */ +template +static inline unsigned int +hb_bit_storage (T v) +{ + if (unlikely (!v)) return 0; + +#if hb_has_builtin(__builtin_clz) + if (sizeof (T) <= sizeof (unsigned int)) + return sizeof (unsigned int) * 8 - __builtin_clz (v); +#endif + +#if hb_has_builtin(__builtin_clzl) + if (sizeof (T) <= sizeof (unsigned long)) + return sizeof (unsigned long) * 8 - __builtin_clzl (v); +#endif + +#if hb_has_builtin(__builtin_clzll) + if (sizeof (T) <= sizeof (unsigned long long)) + return sizeof (unsigned long long) * 8 - __builtin_clzll (v); +#endif + +#if (defined(_MSC_VER) && _MSC_VER >= 1500) || (defined(__MINGW32__) && (__GNUC__ < 4)) + if (sizeof (T) <= sizeof (unsigned int)) + { + unsigned long where; + _BitScanReverse (&where, v); + return 1 + where; + } +# if defined(_WIN64) + if (sizeof (T) <= 8) + { + unsigned long where; + _BitScanReverse64 (&where, v); + return 1 + where; + } +# endif +#endif + + if (sizeof (T) <= 4) + { + /* "bithacks" */ + const unsigned int b[] = {0x2, 0xC, 0xF0, 0xFF00, 0xFFFF0000}; + const unsigned int S[] = {1, 2, 4, 8, 16}; + unsigned int r = 0; + for (int i = 4; i >= 0; i--) + if (v & b[i]) + { + v >>= S[i]; + r |= S[i]; + } + return r + 1; + } + if (sizeof (T) <= 8) + { + /* "bithacks" */ + const uint64_t b[] = {0x2ULL, 0xCULL, 0xF0ULL, 0xFF00ULL, 0xFFFF0000ULL, 0xFFFFFFFF00000000ULL}; + const unsigned int S[] = {1, 2, 4, 8, 16, 32}; + unsigned int r = 0; + for (int i = 5; i >= 0; i--) + if (v & b[i]) + { + v >>= S[i]; + r |= S[i]; + } + return r + 1; + } + if (sizeof (T) == 16) + { + unsigned int shift = 64; + return (v >> shift) ? hb_bit_storage ((uint64_t) (v >> shift)) + shift : + hb_bit_storage ((uint64_t) v); + } + + assert (0); + return 0; /* Shut up stupid compiler. */ +} + +/* Returns the number of zero bits in the least significant side of v */ +template +static inline unsigned int +hb_ctz (T v) +{ + if (unlikely (!v)) return 8 * sizeof (T); + +#if hb_has_builtin(__builtin_ctz) + if (sizeof (T) <= sizeof (unsigned int)) + return __builtin_ctz (v); +#endif + +#if hb_has_builtin(__builtin_ctzl) + if (sizeof (T) <= sizeof (unsigned long)) + return __builtin_ctzl (v); +#endif + +#if hb_has_builtin(__builtin_ctzll) + if (sizeof (T) <= sizeof (unsigned long long)) + return __builtin_ctzll (v); +#endif + +#if (defined(_MSC_VER) && _MSC_VER >= 1500) || (defined(__MINGW32__) && (__GNUC__ < 4)) + if (sizeof (T) <= sizeof (unsigned int)) + { + unsigned long where; + _BitScanForward (&where, v); + return where; + } +# if defined(_WIN64) + if (sizeof (T) <= 8) + { + unsigned long where; + _BitScanForward64 (&where, v); + return where; + } +# endif +#endif + + if (sizeof (T) <= 4) + { + /* "bithacks" */ + unsigned int c = 32; + v &= - (int32_t) v; + if (v) c--; + if (v & 0x0000FFFF) c -= 16; + if (v & 0x00FF00FF) c -= 8; + if (v & 0x0F0F0F0F) c -= 4; + if (v & 0x33333333) c -= 2; + if (v & 0x55555555) c -= 1; + return c; + } + if (sizeof (T) <= 8) + { + /* "bithacks" */ + unsigned int c = 64; + v &= - (int64_t) (v); + if (v) c--; + if (v & 0x00000000FFFFFFFFULL) c -= 32; + if (v & 0x0000FFFF0000FFFFULL) c -= 16; + if (v & 0x00FF00FF00FF00FFULL) c -= 8; + if (v & 0x0F0F0F0F0F0F0F0FULL) c -= 4; + if (v & 0x3333333333333333ULL) c -= 2; + if (v & 0x5555555555555555ULL) c -= 1; + return c; + } + if (sizeof (T) == 16) + { + unsigned int shift = 64; + return (uint64_t) v ? hb_bit_storage ((uint64_t) v) : + hb_bit_storage ((uint64_t) (v >> shift)) + shift; + } + + assert (0); + return 0; /* Shut up stupid compiler. */ +} + + +/* + * Tiny stuff. + */ + +/* ASCII tag/character handling */ +static inline bool ISALPHA (unsigned char c) +{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); } +static inline bool ISALNUM (unsigned char c) +{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'); } +static inline bool ISSPACE (unsigned char c) +{ return c == ' ' || c =='\f'|| c =='\n'|| c =='\r'|| c =='\t'|| c =='\v'; } +static inline unsigned char TOUPPER (unsigned char c) +{ return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c; } +static inline unsigned char TOLOWER (unsigned char c) +{ return (c >= 'A' && c <= 'Z') ? c - 'A' + 'a' : c; } +static inline bool ISHEX (unsigned char c) +{ return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); } +static inline unsigned char TOHEX (uint8_t c) +{ return (c & 0xF) <= 9 ? (c & 0xF) + '0' : (c & 0xF) + 'a' - 10; } +static inline uint8_t FROMHEX (unsigned char c) +{ return (c >= '0' && c <= '9') ? c - '0' : TOLOWER (c) - 'a' + 10; } + +static inline unsigned int DIV_CEIL (const unsigned int a, unsigned int b) +{ return (a + (b - 1)) / b; } + + +#undef ARRAY_LENGTH +template +static inline unsigned int ARRAY_LENGTH (const Type (&)[n]) { return n; } +/* A const version, but does not detect erratically being called on pointers. */ +#define ARRAY_LENGTH_CONST(__array) ((signed int) (sizeof (__array) / sizeof (__array[0]))) + + +static inline void * +hb_memcpy (void *__restrict dst, const void *__restrict src, size_t len) +{ + /* It's illegal to pass 0 as size to memcpy. */ + if (unlikely (!len)) return dst; + return memcpy (dst, src, len); +} + +static inline int +hb_memcmp (const void *a, const void *b, unsigned int len) +{ + /* It's illegal to pass NULL to memcmp(), even if len is zero. + * So, wrap it. + * https://sourceware.org/bugzilla/show_bug.cgi?id=23878 */ + if (unlikely (!len)) return 0; + return memcmp (a, b, len); +} + +static inline void * +hb_memset (void *s, int c, unsigned int n) +{ + /* It's illegal to pass NULL to memset(), even if n is zero. */ + if (unlikely (!n)) return 0; + return memset (s, c, n); +} + +static inline unsigned int +hb_ceil_to_4 (unsigned int v) +{ + return ((v - 1) | 3) + 1; +} + +template static inline bool +hb_in_range (T u, T lo, T hi) +{ + static_assert (!std::is_signed::value, ""); + + /* The casts below are important as if T is smaller than int, + * the subtract results will become a signed int! */ + return (T)(u - lo) <= (T)(hi - lo); +} +template static inline bool +hb_in_ranges (T u, T lo1, T hi1) +{ + return hb_in_range (u, lo1, hi1); +} +template static inline bool +hb_in_ranges (T u, T lo1, T hi1, Ts... ds) +{ + return hb_in_range (u, lo1, hi1) || hb_in_ranges (u, ds...); +} + + +/* + * Overflow checking. + */ + +static inline bool +hb_unsigned_mul_overflows (unsigned int count, unsigned int size, unsigned *result = nullptr) +{ +#if hb_has_builtin(__builtin_mul_overflow) + unsigned stack_result; + if (!result) + result = &stack_result; + return __builtin_mul_overflow (count, size, result); +#endif + + if (result) + *result = count * size; + return (size > 0) && (count >= ((unsigned int) -1) / size); +} + + +/* + * Sort and search. + */ + +template +static int +_hb_cmp_method (const void *pkey, const void *pval, Ts... ds) +{ + const K& key = * (const K*) pkey; + const V& val = * (const V*) pval; + + return val.cmp (key, ds...); +} + +template +static inline bool +hb_bsearch_impl (unsigned *pos, /* Out */ + const K& key, + V* base, size_t nmemb, size_t stride, + int (*compar)(const void *_key, const void *_item, Ts... _ds), + Ts... ds) +{ + /* This is our *only* bsearch implementation. */ + + int min = 0, max = (int) nmemb - 1; + while (min <= max) + { + int mid = ((unsigned int) min + (unsigned int) max) / 2; +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + V* p = (V*) (((const char *) base) + (mid * stride)); +#pragma GCC diagnostic pop + int c = compar ((const void *) std::addressof (key), (const void *) p, ds...); + if (c < 0) + max = mid - 1; + else if (c > 0) + min = mid + 1; + else + { + *pos = mid; + return true; + } + } + *pos = min; + return false; +} + +template +static inline V* +hb_bsearch (const K& key, V* base, + size_t nmemb, size_t stride = sizeof (V), + int (*compar)(const void *_key, const void *_item) = _hb_cmp_method) +{ + unsigned pos; +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + return hb_bsearch_impl (&pos, key, base, nmemb, stride, compar) ? + (V*) (((const char *) base) + (pos * stride)) : nullptr; +#pragma GCC diagnostic pop +} +template +static inline V* +hb_bsearch (const K& key, V* base, + size_t nmemb, size_t stride, + int (*compar)(const void *_key, const void *_item, Ts... _ds), + Ts... ds) +{ + unsigned pos; +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + return hb_bsearch_impl (&pos, key, base, nmemb, stride, compar, ds...) ? + (V*) (((const char *) base) + (pos * stride)) : nullptr; +#pragma GCC diagnostic pop +} + + +/* From https://github.com/noporpoise/sort_r + Feb 5, 2019 (c8c65c1e) + Modified to support optional argument using templates */ + +/* Isaac Turner 29 April 2014 Public Domain */ + +/* +hb_qsort function to be exported. +Parameters: + base is the array to be sorted + nel is the number of elements in the array + width is the size in bytes of each element of the array + compar is the comparison function + arg (optional) is a pointer to be passed to the comparison function + +void hb_qsort(void *base, size_t nel, size_t width, + int (*compar)(const void *_a, const void *_b, [void *_arg]), + [void *arg]); +*/ + +#define SORT_R_SWAP(a,b,tmp) ((void) ((tmp) = (a)), (void) ((a) = (b)), (b) = (tmp)) + +/* swap a and b */ +/* a and b must not be equal! */ +static inline void sort_r_swap(char *__restrict a, char *__restrict b, + size_t w) +{ + char tmp, *end = a+w; + for(; a < end; a++, b++) { SORT_R_SWAP(*a, *b, tmp); } +} + +/* swap a, b iff a>b */ +/* a and b must not be equal! */ +/* __restrict is same as restrict but better support on old machines */ +template +static inline int sort_r_cmpswap(char *__restrict a, + char *__restrict b, size_t w, + int (*compar)(const void *_a, + const void *_b, + Ts... _ds), + Ts... ds) +{ + if(compar(a, b, ds...) > 0) { + sort_r_swap(a, b, w); + return 1; + } + return 0; +} + +/* +Swap consecutive blocks of bytes of size na and nb starting at memory addr ptr, +with the smallest swap so that the blocks are in the opposite order. Blocks may +be internally re-ordered e.g. + 12345ab -> ab34512 + 123abc -> abc123 + 12abcde -> deabc12 +*/ +static inline void sort_r_swap_blocks(char *ptr, size_t na, size_t nb) +{ + if(na > 0 && nb > 0) { + if(na > nb) { sort_r_swap(ptr, ptr+na, nb); } + else { sort_r_swap(ptr, ptr+nb, na); } + } +} + +/* Implement recursive quicksort ourselves */ +/* Note: quicksort is not stable, equivalent values may be swapped */ +template +static inline void sort_r_simple(void *base, size_t nel, size_t w, + int (*compar)(const void *_a, + const void *_b, + Ts... _ds), + Ts... ds) +{ + char *b = (char *)base, *end = b + nel*w; + + /* for(size_t i=0; i b && sort_r_cmpswap(pj-w,pj,w,compar,ds...); pj -= w) {} + } + } + else + { + /* nel > 9; Quicksort */ + + int cmp; + char *pl, *ple, *pr, *pre, *pivot; + char *last = b+w*(nel-1), *tmp; + + /* + Use median of second, middle and second-last items as pivot. + First and last may have been swapped with pivot and therefore be extreme + */ + char *l[3]; + l[0] = b + w; + l[1] = b+w*(nel/2); + l[2] = last - w; + + /* printf("pivots: %i, %i, %i\n", *(int*)l[0], *(int*)l[1], *(int*)l[2]); */ + + if(compar(l[0],l[1],ds...) > 0) { SORT_R_SWAP(l[0], l[1], tmp); } + if(compar(l[1],l[2],ds...) > 0) { + SORT_R_SWAP(l[1], l[2], tmp); + if(compar(l[0],l[1],ds...) > 0) { SORT_R_SWAP(l[0], l[1], tmp); } + } + + /* swap mid value (l[1]), and last element to put pivot as last element */ + if(l[1] != last) { sort_r_swap(l[1], last, w); } + + /* + pl is the next item on the left to be compared to the pivot + pr is the last item on the right that was compared to the pivot + ple is the left position to put the next item that equals the pivot + ple is the last right position where we put an item that equals the pivot + v- end (beyond the array) + EEEEEELLLLLLLLuuuuuuuuGGGGGGGEEEEEEEE. + ^- b ^- ple ^- pl ^- pr ^- pre ^- last (where the pivot is) + Pivot comparison key: + E = equal, L = less than, u = unknown, G = greater than, E = equal + */ + pivot = last; + ple = pl = b; + pre = pr = last; + + /* + Strategy: + Loop into the list from the left and right at the same time to find: + - an item on the left that is greater than the pivot + - an item on the right that is less than the pivot + Once found, they are swapped and the loop continues. + Meanwhile items that are equal to the pivot are moved to the edges of the + array. + */ + while(pl < pr) { + /* Move left hand items which are equal to the pivot to the far left. + break when we find an item that is greater than the pivot */ + for(; pl < pr; pl += w) { + cmp = compar(pl, pivot, ds...); + if(cmp > 0) { break; } + else if(cmp == 0) { + if(ple < pl) { sort_r_swap(ple, pl, w); } + ple += w; + } + } + /* break if last batch of left hand items were equal to pivot */ + if(pl >= pr) { break; } + /* Move right hand items which are equal to the pivot to the far right. + break when we find an item that is less than the pivot */ + for(; pl < pr; ) { + pr -= w; /* Move right pointer onto an unprocessed item */ + cmp = compar(pr, pivot, ds...); + if(cmp == 0) { + pre -= w; + if(pr < pre) { sort_r_swap(pr, pre, w); } + } + else if(cmp < 0) { + if(pl < pr) { sort_r_swap(pl, pr, w); } + pl += w; + break; + } + } + } + + pl = pr; /* pr may have gone below pl */ + + /* + Now we need to go from: EEELLLGGGGEEEE + to: LLLEEEEEEEGGGG + Pivot comparison key: + E = equal, L = less than, u = unknown, G = greater than, E = equal + */ + sort_r_swap_blocks(b, ple-b, pl-ple); + sort_r_swap_blocks(pr, pre-pr, end-pre); + + /*for(size_t i=0; i static inline void +hb_stable_sort (T *array, unsigned int len, int(*compar)(const T2 *, const T2 *), T3 *array2 = nullptr) +{ + static_assert (hb_is_trivially_copy_assignable (T), ""); + static_assert (hb_is_trivially_copy_assignable (T3), ""); + + for (unsigned int i = 1; i < len; i++) + { + unsigned int j = i; + while (j && compar (&array[j - 1], &array[i]) > 0) + j--; + if (i == j) + continue; + /* Move item i to occupy place for item j, shift what's in between. */ + { + T t = array[i]; + memmove (&array[j + 1], &array[j], (i - j) * sizeof (T)); + array[j] = t; + } + if (array2) + { + T3 t = array2[i]; + memmove (&array2[j + 1], &array2[j], (i - j) * sizeof (T3)); + array2[j] = t; + } + } +} + +static inline hb_bool_t +hb_codepoint_parse (const char *s, unsigned int len, int base, hb_codepoint_t *out) +{ + unsigned int v; + const char *p = s; + const char *end = p + len; + if (unlikely (!hb_parse_uint (&p, end, &v, true/* whole buffer */, base))) + return false; + + *out = v; + return true; +} + + +/* Operators. */ + +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (a & b) +} +HB_FUNCOBJ (hb_bitwise_and); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (a | b) +} +HB_FUNCOBJ (hb_bitwise_or); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (a ^ b) +} +HB_FUNCOBJ (hb_bitwise_xor); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a & b) +} +HB_FUNCOBJ (hb_bitwise_lt); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (a & ~b) +} +HB_FUNCOBJ (hb_bitwise_gt); // aka sub +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a | b) +} +HB_FUNCOBJ (hb_bitwise_le); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T &b) const HB_AUTO_RETURN (a | ~b) +} +HB_FUNCOBJ (hb_bitwise_ge); +struct +{ + template constexpr auto + operator () (const T &a) const HB_AUTO_RETURN (~a) +} +HB_FUNCOBJ (hb_bitwise_neg); + +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a + b) +} +HB_FUNCOBJ (hb_add); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a - b) +} +HB_FUNCOBJ (hb_sub); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (b - a) +} +HB_FUNCOBJ (hb_rsub); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a * b) +} +HB_FUNCOBJ (hb_mul); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a / b) +} +HB_FUNCOBJ (hb_div); +struct +{ HB_PARTIALIZE(2); + template constexpr auto + operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a % b) +} +HB_FUNCOBJ (hb_mod); +struct +{ + template constexpr auto + operator () (const T &a) const HB_AUTO_RETURN (+a) +} +HB_FUNCOBJ (hb_pos); +struct +{ + template constexpr auto + operator () (const T &a) const HB_AUTO_RETURN (-a) +} +HB_FUNCOBJ (hb_neg); +struct +{ + template constexpr auto + operator () (T &a) const HB_AUTO_RETURN (++a) +} +HB_FUNCOBJ (hb_inc); +struct +{ + template constexpr auto + operator () (T &a) const HB_AUTO_RETURN (--a) +} +HB_FUNCOBJ (hb_dec); + + +/* Adapted from kurbo implementation with extra parameters added, + * and finding for a particular range instead of 0. + * + * For documentation and implementation see: + * + * [ITP method]: https://en.wikipedia.org/wiki/ITP_Method + * [An Enhancement of the Bisection Method Average Performance Preserving Minmax Optimality]: https://dl.acm.org/doi/10.1145/3423597 + * https://docs.rs/kurbo/0.8.1/kurbo/common/fn.solve_itp.html + * https://github.com/linebender/kurbo/blob/fd839c25ea0c98576c7ce5789305822675a89938/src/common.rs#L162-L248 + */ +template +double solve_itp (func_t f, + double a, double b, + double epsilon, + double min_y, double max_y, + double &ya, double &yb, double &y) +{ + unsigned n1_2 = (unsigned) (hb_max (ceil (log2 ((b - a) / epsilon)) - 1.0, 0.0)); + const unsigned n0 = 1; // Hardwired + const double k1 = 0.2 / (b - a); // Hardwired. + unsigned nmax = n0 + n1_2; + double scaled_epsilon = epsilon * double (1llu << nmax); + double _2_epsilon = 2.0 * epsilon; + while (b - a > _2_epsilon) + { + double x1_2 = 0.5 * (a + b); + double r = scaled_epsilon - 0.5 * (b - a); + double xf = (yb * a - ya * b) / (yb - ya); + double sigma = x1_2 - xf; + double b_a = b - a; + // This has k2 = 2 hardwired for efficiency. + double b_a_k2 = b_a * b_a; + double delta = k1 * b_a_k2; + int sigma_sign = sigma >= 0 ? +1 : -1; + double xt = delta <= fabs (x1_2 - xf) ? xf + delta * sigma_sign : x1_2; + double xitp = fabs (xt - x1_2) <= r ? xt : x1_2 - r * sigma_sign; + double yitp = f (xitp); + if (yitp > max_y) + { + b = xitp; + yb = yitp; + } + else if (yitp < min_y) + { + a = xitp; + ya = yitp; + } + else + { + y = yitp; + return xitp; + } + scaled_epsilon *= 0.5; + } + return 0.5 * (a + b); +} + + +#endif /* HB_ALGS_HH */ diff --git a/gfx/harfbuzz/src/hb-array.hh b/gfx/harfbuzz/src/hb-array.hh new file mode 100644 index 0000000000..1a22e15c0f --- /dev/null +++ b/gfx/harfbuzz/src/hb-array.hh @@ -0,0 +1,512 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_ARRAY_HH +#define HB_ARRAY_HH + +#include "hb.hh" +#include "hb-algs.hh" +#include "hb-iter.hh" +#include "hb-null.hh" + + +template +struct hb_sorted_array_t; + +enum hb_not_found_t +{ + HB_NOT_FOUND_DONT_STORE, + HB_NOT_FOUND_STORE, + HB_NOT_FOUND_STORE_CLOSEST, +}; + + +template +struct hb_array_t : hb_iter_with_fallback_t, Type&> +{ + /* + * Constructors. + */ + hb_array_t () = default; + hb_array_t (const hb_array_t&) = default; + ~hb_array_t () = default; + hb_array_t& operator= (const hb_array_t&) = default; + hb_array_t& operator= (hb_array_t&&) = default; + + constexpr hb_array_t (Type *array_, unsigned int length_) : arrayZ (array_), length (length_) {} + template + constexpr hb_array_t (Type (&array_)[length_]) : hb_array_t (array_, length_) {} + + template + constexpr hb_array_t (const hb_array_t &o) : + hb_iter_with_fallback_t (), + arrayZ (o.arrayZ), length (o.length), backwards_length (o.backwards_length) {} + template + hb_array_t& operator = (const hb_array_t &o) + { arrayZ = o.arrayZ; length = o.length; backwards_length = o.backwards_length; return *this; } + + /* + * Iterator implementation. + */ + typedef Type& __item_t__; + static constexpr bool is_random_access_iterator = true; + Type& __item_at__ (unsigned i) const + { + if (unlikely (i >= length)) return CrapOrNull (Type); + return arrayZ[i]; + } + void __forward__ (unsigned n) + { + if (unlikely (n > length)) + n = length; + length -= n; + backwards_length += n; + arrayZ += n; + } + void __rewind__ (unsigned n) + { + if (unlikely (n > backwards_length)) + n = backwards_length; + length += n; + backwards_length -= n; + arrayZ -= n; + } + unsigned __len__ () const { return length; } + /* Ouch. The operator== compares the contents of the array. For range-based for loops, + * it's best if we can just compare arrayZ, though comparing contents is still fast, + * but also would require that Type has operator==. As such, we optimize this operator + * for range-based for loop and just compare arrayZ and length. + * + * The above comment is outdated now because we implemented separate begin/end to + * objects that were using hb_array_t for range-based loop before. */ + bool operator != (const hb_array_t& o) const + { return this->arrayZ != o.arrayZ || this->length != o.length; } + + /* Faster range-based for loop without bounds-check. */ + Type *begin () const { return arrayZ; } + Type *end () const { return arrayZ + length; } + + + /* Extra operators. + */ + Type * operator & () const { return arrayZ; } + operator hb_array_t () { return hb_array_t (arrayZ, length); } + template operator T * () const { return arrayZ; } + + HB_INTERNAL bool operator == (const hb_array_t &o) const; + + uint32_t hash () const + { + // FNV-1a hash function + uint32_t current = /*cbf29ce4*/0x84222325; + for (auto &v : *this) + { + current = current ^ hb_hash (v); + current = current * 16777619; + } + return current; + } + + /* + * Compare, Sort, and Search. + */ + + /* Note: our compare is NOT lexicographic; it also does NOT call Type::cmp. */ + int cmp (const hb_array_t &a) const + { + if (length != a.length) + return (int) a.length - (int) length; + return hb_memcmp (a.arrayZ, arrayZ, get_size ()); + } + HB_INTERNAL static int cmp (const void *pa, const void *pb) + { + hb_array_t *a = (hb_array_t *) pa; + hb_array_t *b = (hb_array_t *) pb; + return b->cmp (*a); + } + + template + Type *lsearch (const T &x, Type *not_found = nullptr) + { + unsigned i; + return lfind (x, &i) ? &this->arrayZ[i] : not_found; + } + template + const Type *lsearch (const T &x, const Type *not_found = nullptr) const + { + unsigned i; + return lfind (x, &i) ? &this->arrayZ[i] : not_found; + } + template + bool lfind (const T &x, unsigned *pos = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { + for (unsigned i = 0; i < length; ++i) + if (hb_equal (x, this->arrayZ[i])) + { + if (pos) + *pos = i; + return true; + } + + if (pos) + { + switch (not_found) + { + case HB_NOT_FOUND_DONT_STORE: + break; + + case HB_NOT_FOUND_STORE: + *pos = to_store; + break; + + case HB_NOT_FOUND_STORE_CLOSEST: + *pos = length; + break; + } + } + return false; + } + + hb_sorted_array_t qsort (int (*cmp_)(const void*, const void*)) + { + //static_assert (hb_enable_if (hb_is_trivially_copy_assignable(Type)), ""); + if (likely (length)) + hb_qsort (arrayZ, length, this->get_item_size (), cmp_); + return hb_sorted_array_t (*this); + } + hb_sorted_array_t qsort () + { + //static_assert (hb_enable_if (hb_is_trivially_copy_assignable(Type)), ""); + if (likely (length)) + hb_qsort (arrayZ, length, this->get_item_size (), Type::cmp); + return hb_sorted_array_t (*this); + } + + /* + * Other methods. + */ + + unsigned int get_size () const { return length * this->get_item_size (); } + + /* + * Reverse the order of items in this array in the range [start, end). + */ + void reverse (unsigned start = 0, unsigned end = -1) + { + start = hb_min (start, length); + end = hb_min (end, length); + + if (end < start + 2) + return; + + for (unsigned lhs = start, rhs = end - 1; lhs < rhs; lhs++, rhs--) + hb_swap (arrayZ[rhs], arrayZ[lhs]); + } + + hb_array_t sub_array (unsigned int start_offset = 0, unsigned int *seg_count = nullptr /* IN/OUT */) const + { + if (!start_offset && !seg_count) + return *this; + + unsigned int count = length; + if (unlikely (start_offset > count)) + count = 0; + else + count -= start_offset; + if (seg_count) + count = *seg_count = hb_min (count, *seg_count); + return hb_array_t (arrayZ + start_offset, count); + } + hb_array_t sub_array (unsigned int start_offset, unsigned int seg_count) const + { return sub_array (start_offset, &seg_count); } + + hb_array_t truncate (unsigned length) const { return sub_array (0, length); } + + template + const T *as () const + { return length < hb_min_size (T) ? &Null (T) : reinterpret_cast (arrayZ); } + + template + bool check_range (const T *p, unsigned int size = T::static_size) const + { + return arrayZ <= ((const char *) p) + && ((const char *) p) <= arrayZ + length + && (unsigned int) (arrayZ + length - (const char *) p) >= size; + } + + /* Only call if you allocated the underlying array using hb_malloc() or similar. */ + void fini () + { hb_free ((void *) arrayZ); arrayZ = nullptr; length = 0; } + + template )))> + hb_array_t copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + auto* out = c->start_embed (arrayZ); + if (unlikely (!c->extend_size (out, get_size (), false))) return_trace (hb_array_t ()); + for (unsigned i = 0; i < length; i++) + out[i] = arrayZ[i]; /* TODO: add version that calls c->copy() */ + return_trace (hb_array_t (out, length)); + } + + template ))> + hb_array_t copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + auto* out = c->start_embed (arrayZ); + if (unlikely (!c->extend_size (out, get_size (), false))) return_trace (hb_array_t ()); + hb_memcpy (out, arrayZ, get_size ()); + return_trace (hb_array_t (out, length)); + } + + template + bool sanitize (hb_sanitize_context_t *c) const + { return c->check_array (arrayZ, length); } + + /* + * Members + */ + + public: + Type *arrayZ = nullptr; + unsigned int length = 0; + unsigned int backwards_length = 0; +}; +template inline hb_array_t +hb_array () +{ return hb_array_t (); } +template inline hb_array_t +hb_array (T *array, unsigned int length) +{ return hb_array_t (array, length); } +template inline hb_array_t +hb_array (T (&array_)[length_]) +{ return hb_array_t (array_); } + +template +struct hb_sorted_array_t : + hb_array_t, + hb_iter_t, Type&> +{ + typedef hb_iter_t iter_base_t; + HB_ITER_USING (iter_base_t); + static constexpr bool is_random_access_iterator = true; + static constexpr bool is_sorted_iterator = true; + + hb_sorted_array_t () = default; + hb_sorted_array_t (const hb_sorted_array_t&) = default; + ~hb_sorted_array_t () = default; + hb_sorted_array_t& operator= (const hb_sorted_array_t&) = default; + hb_sorted_array_t& operator= (hb_sorted_array_t&&) = default; + + constexpr hb_sorted_array_t (Type *array_, unsigned int length_) : hb_array_t (array_, length_) {} + template + constexpr hb_sorted_array_t (Type (&array_)[length_]) : hb_array_t (array_) {} + + template + constexpr hb_sorted_array_t (const hb_array_t &o) : + hb_array_t (o), + hb_iter_t () {} + template + hb_sorted_array_t& operator = (const hb_array_t &o) + { hb_array_t (*this) = o; return *this; } + + /* Iterator implementation. */ + + /* See comment in hb_array_of::operator != */ + bool operator != (const hb_sorted_array_t& o) const + { return this->arrayZ != o.arrayZ || this->length != o.length; } + + /* Faster range-based for loop without bounds-check. */ + Type *begin () const { return this->arrayZ; } + Type *end () const { return this->arrayZ + this->length; } + + + hb_sorted_array_t sub_array (unsigned int start_offset, unsigned int *seg_count /* IN/OUT */) const + { return hb_sorted_array_t (((const hb_array_t *) (this))->sub_array (start_offset, seg_count)); } + hb_sorted_array_t sub_array (unsigned int start_offset, unsigned int seg_count) const + { return sub_array (start_offset, &seg_count); } + + hb_sorted_array_t truncate (unsigned length) const { return sub_array (0, length); } + + template + Type *bsearch (const T &x, Type *not_found = nullptr) + { + unsigned int i; + return bfind (x, &i) ? &this->arrayZ[i] : not_found; + } + template + const Type *bsearch (const T &x, const Type *not_found = nullptr) const + { + unsigned int i; + return bfind (x, &i) ? &this->arrayZ[i] : not_found; + } + template + bool bfind (const T &x, unsigned int *i = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { + unsigned pos; + + if (bsearch_impl (x, &pos)) + { + if (i) + *i = pos; + return true; + } + + if (i) + { + switch (not_found) + { + case HB_NOT_FOUND_DONT_STORE: + break; + + case HB_NOT_FOUND_STORE: + *i = to_store; + break; + + case HB_NOT_FOUND_STORE_CLOSEST: + *i = pos; + break; + } + } + return false; + } + template + bool bsearch_impl (const T &x, unsigned *pos, Ts... ds) const + { + return hb_bsearch_impl (pos, + x, + this->arrayZ, + this->length, + sizeof (Type), + _hb_cmp_method, + std::forward (ds)...); + } +}; +template inline hb_sorted_array_t +hb_sorted_array (T *array, unsigned int length) +{ return hb_sorted_array_t (array, length); } +template inline hb_sorted_array_t +hb_sorted_array (T (&array_)[length_]) +{ return hb_sorted_array_t (array_); } + +template +inline bool hb_array_t::operator == (const hb_array_t &o) const +{ + if (o.length != this->length) return false; + for (unsigned int i = 0; i < this->length; i++) { + if (this->arrayZ[i] != o.arrayZ[i]) return false; + } + return true; +} +template <> +inline bool hb_array_t::operator == (const hb_array_t &o) const +{ + if (o.length != this->length) return false; + return 0 == hb_memcmp (arrayZ, o.arrayZ, length); +} +template <> +inline bool hb_array_t::operator == (const hb_array_t &o) const +{ + if (o.length != this->length) return false; + return 0 == hb_memcmp (arrayZ, o.arrayZ, length); +} + + +/* Specialize hash() for byte arrays. */ + +template <> +inline uint32_t hb_array_t::hash () const +{ + // FNV-1a hash function + uint32_t current = /*cbf29ce4*/0x84222325; + unsigned i = 0; + +#if defined(__OPTIMIZE__) && !defined(HB_NO_PACKED) && \ + ((defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)) + struct __attribute__((packed)) packed_uint32_t { uint32_t v; }; + for (; i + 4 <= this->length; i += 4) + { + current = current ^ hb_hash ((uint32_t) ((const packed_uint32_t *) &this->arrayZ[i])->v); + current = current * 16777619; + } +#endif + + for (; i < this->length; i++) + { + current = current ^ hb_hash (this->arrayZ[i]); + current = current * 16777619; + } + return current; +} + +template <> +inline uint32_t hb_array_t::hash () const +{ + // FNV-1a hash function + uint32_t current = /*cbf29ce4*/0x84222325; + unsigned i = 0; + +#if defined(__OPTIMIZE__) && !defined(HB_NO_PACKED) && \ + ((defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)) + struct __attribute__((packed)) packed_uint32_t { uint32_t v; }; + for (; i + 4 <= this->length; i += 4) + { + current = current ^ hb_hash ((uint32_t) ((const packed_uint32_t *) &this->arrayZ[i])->v); + current = current * 16777619; + } +#endif + + for (; i < this->length; i++) + { + current = current ^ hb_hash (this->arrayZ[i]); + current = current * 16777619; + } + return current; +} + + +typedef hb_array_t hb_bytes_t; +typedef hb_array_t hb_ubytes_t; + + + +#endif /* HB_ARRAY_HH */ diff --git a/gfx/harfbuzz/src/hb-atomic.hh b/gfx/harfbuzz/src/hb-atomic.hh new file mode 100644 index 0000000000..a6283de140 --- /dev/null +++ b/gfx/harfbuzz/src/hb-atomic.hh @@ -0,0 +1,221 @@ +/* + * Copyright © 2007 Chris Wilson + * Copyright © 2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Contributor(s): + * Chris Wilson + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_ATOMIC_HH +#define HB_ATOMIC_HH + +#include "hb.hh" +#include "hb-meta.hh" + + +/* + * Atomic integers and pointers. + */ + + +/* We need external help for these */ + +#if defined(hb_atomic_int_impl_add) \ + && defined(hb_atomic_ptr_impl_get) \ + && defined(hb_atomic_ptr_impl_cmpexch) + +/* Defined externally, i.e. in config.h. */ + + +#elif !defined(HB_NO_MT) && defined(__ATOMIC_ACQUIRE) + +/* C++11-style GCC primitives. We prefer these as they don't require linking to libstdc++ / libc++. */ + +#define _hb_memory_barrier() __sync_synchronize () + +#define hb_atomic_int_impl_add(AI, V) __atomic_fetch_add ((AI), (V), __ATOMIC_ACQ_REL) +#define hb_atomic_int_impl_set_relaxed(AI, V) __atomic_store_n ((AI), (V), __ATOMIC_RELAXED) +#define hb_atomic_int_impl_set(AI, V) __atomic_store_n ((AI), (V), __ATOMIC_RELEASE) +#define hb_atomic_int_impl_get_relaxed(AI) __atomic_load_n ((AI), __ATOMIC_RELAXED) +#define hb_atomic_int_impl_get(AI) __atomic_load_n ((AI), __ATOMIC_ACQUIRE) + +#define hb_atomic_ptr_impl_set_relaxed(P, V) __atomic_store_n ((P), (V), __ATOMIC_RELAXED) +#define hb_atomic_ptr_impl_get_relaxed(P) __atomic_load_n ((P), __ATOMIC_RELAXED) +#define hb_atomic_ptr_impl_get(P) __atomic_load_n ((P), __ATOMIC_ACQUIRE) +static inline bool +_hb_atomic_ptr_impl_cmplexch (const void **P, const void *O_, const void *N) +{ + const void *O = O_; // Need lvalue + return __atomic_compare_exchange_n ((void **) P, (void **) &O, (void *) N, true, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED); +} +#define hb_atomic_ptr_impl_cmpexch(P,O,N) _hb_atomic_ptr_impl_cmplexch ((const void **) (P), (O), (N)) + + +#elif !defined(HB_NO_MT) + +/* C++11 atomics. */ + +#include + +#define _hb_memory_barrier() std::atomic_thread_fence(std::memory_order_ack_rel) +#define _hb_memory_r_barrier() std::atomic_thread_fence(std::memory_order_acquire) +#define _hb_memory_w_barrier() std::atomic_thread_fence(std::memory_order_release) + +#define hb_atomic_int_impl_add(AI, V) (reinterpret_cast::type> *> (AI)->fetch_add ((V), std::memory_order_acq_rel)) +#define hb_atomic_int_impl_set_relaxed(AI, V) (reinterpret_cast::type> *> (AI)->store ((V), std::memory_order_relaxed)) +#define hb_atomic_int_impl_set(AI, V) (reinterpret_cast::type> *> (AI)->store ((V), std::memory_order_release)) +#define hb_atomic_int_impl_get_relaxed(AI) (reinterpret_cast::type> const *> (AI)->load (std::memory_order_relaxed)) +#define hb_atomic_int_impl_get(AI) (reinterpret_cast::type> const *> (AI)->load (std::memory_order_acquire)) + +#define hb_atomic_ptr_impl_set_relaxed(P, V) (reinterpret_cast *> (P)->store ((V), std::memory_order_relaxed)) +#define hb_atomic_ptr_impl_get_relaxed(P) (reinterpret_cast const *> (P)->load (std::memory_order_relaxed)) +#define hb_atomic_ptr_impl_get(P) (reinterpret_cast *> (P)->load (std::memory_order_acquire)) +static inline bool +_hb_atomic_ptr_impl_cmplexch (const void **P, const void *O_, const void *N) +{ + const void *O = O_; // Need lvalue + return reinterpret_cast *> (P)->compare_exchange_weak (O, N, std::memory_order_acq_rel, std::memory_order_relaxed); +} +#define hb_atomic_ptr_impl_cmpexch(P,O,N) _hb_atomic_ptr_impl_cmplexch ((const void **) (P), (O), (N)) + + +#else /* defined(HB_NO_MT) */ + +#define hb_atomic_int_impl_add(AI, V) ((*(AI) += (V)) - (V)) +#define _hb_memory_barrier() do {} while (0) +#define hb_atomic_ptr_impl_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false) + +#endif + + +/* This should never be disabled, even under HB_NO_MT. + * except that MSVC gives me an internal compiler error, so disabled there. + * + * https://github.com/harfbuzz/harfbuzz/pull/4119 + */ +#ifndef _hb_compiler_memory_r_barrier +#if defined(__ATOMIC_ACQUIRE) // gcc-like +#define _hb_compiler_memory_r_barrier() asm volatile("": : :"memory") +#elif !defined(_MSC_VER) +#include +#define _hb_compiler_memory_r_barrier() std::atomic_signal_fence (std::memory_order_acquire) +#else +#define _hb_compiler_memory_r_barrier() do {} while (0) +#endif +#endif + + + +#ifndef _hb_memory_r_barrier +#define _hb_memory_r_barrier() _hb_memory_barrier () +#endif +#ifndef _hb_memory_w_barrier +#define _hb_memory_w_barrier() _hb_memory_barrier () +#endif +#ifndef hb_atomic_int_impl_set_relaxed +#define hb_atomic_int_impl_set_relaxed(AI, V) (*(AI) = (V)) +#endif +#ifndef hb_atomic_int_impl_get_relaxed +#define hb_atomic_int_impl_get_relaxed(AI) (*(AI)) +#endif + +#ifndef hb_atomic_ptr_impl_set_relaxed +#define hb_atomic_ptr_impl_set_relaxed(P, V) (*(P) = (V)) +#endif +#ifndef hb_atomic_ptr_impl_get_relaxed +#define hb_atomic_ptr_impl_get_relaxed(P) (*(P)) +#endif +#ifndef hb_atomic_int_impl_set +inline void hb_atomic_int_impl_set (int *AI, int v) { _hb_memory_w_barrier (); *AI = v; } +inline void hb_atomic_int_impl_set (short *AI, short v) { _hb_memory_w_barrier (); *AI = v; } +#endif +#ifndef hb_atomic_int_impl_get +inline int hb_atomic_int_impl_get (const int *AI) { int v = *AI; _hb_memory_r_barrier (); return v; } +inline short hb_atomic_int_impl_get (const short *AI) { short v = *AI; _hb_memory_r_barrier (); return v; } +#endif +#ifndef hb_atomic_ptr_impl_get +inline void *hb_atomic_ptr_impl_get (void ** const P) { void *v = *P; _hb_memory_r_barrier (); return v; } +#endif + + +struct hb_atomic_short_t +{ + hb_atomic_short_t () = default; + constexpr hb_atomic_short_t (short v) : v (v) {} + + hb_atomic_short_t& operator = (short v_) { set_relaxed (v_); return *this; } + operator short () const { return get_relaxed (); } + + void set_relaxed (short v_) { hb_atomic_int_impl_set_relaxed (&v, v_); } + void set_release (short v_) { hb_atomic_int_impl_set (&v, v_); } + short get_relaxed () const { return hb_atomic_int_impl_get_relaxed (&v); } + short get_acquire () const { return hb_atomic_int_impl_get (&v); } + short inc () { return hb_atomic_int_impl_add (&v, 1); } + short dec () { return hb_atomic_int_impl_add (&v, -1); } + + short v = 0; +}; + +struct hb_atomic_int_t +{ + hb_atomic_int_t () = default; + constexpr hb_atomic_int_t (int v) : v (v) {} + + hb_atomic_int_t& operator = (int v_) { set_relaxed (v_); return *this; } + operator int () const { return get_relaxed (); } + + void set_relaxed (int v_) { hb_atomic_int_impl_set_relaxed (&v, v_); } + void set_release (int v_) { hb_atomic_int_impl_set (&v, v_); } + int get_relaxed () const { return hb_atomic_int_impl_get_relaxed (&v); } + int get_acquire () const { return hb_atomic_int_impl_get (&v); } + int inc () { return hb_atomic_int_impl_add (&v, 1); } + int dec () { return hb_atomic_int_impl_add (&v, -1); } + + int v = 0; +}; + +template +struct hb_atomic_ptr_t +{ + typedef hb_remove_pointer

T; + + hb_atomic_ptr_t () = default; + constexpr hb_atomic_ptr_t (T* v) : v (v) {} + + void init (T* v_ = nullptr) { set_relaxed (v_); } + void set_relaxed (T* v_) { hb_atomic_ptr_impl_set_relaxed (&v, v_); } + T *get_relaxed () const { return (T *) hb_atomic_ptr_impl_get_relaxed (&v); } + T *get_acquire () const { return (T *) hb_atomic_ptr_impl_get ((void **) &v); } + bool cmpexch (const T *old, T *new_) const { return hb_atomic_ptr_impl_cmpexch ((void **) &v, (void *) old, (void *) new_); } + + T * operator -> () const { return get_acquire (); } + template operator C * () const { return get_acquire (); } + + T *v = nullptr; +}; + + +#endif /* HB_ATOMIC_HH */ diff --git a/gfx/harfbuzz/src/hb-bimap.hh b/gfx/harfbuzz/src/hb-bimap.hh new file mode 100644 index 0000000000..9edefd9710 --- /dev/null +++ b/gfx/harfbuzz/src/hb-bimap.hh @@ -0,0 +1,164 @@ +/* + * Copyright © 2019 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_BIMAP_HH +#define HB_BIMAP_HH + +#include "hb.hh" +#include "hb-map.hh" + +/* Bi-directional map */ +struct hb_bimap_t +{ + void reset () + { + forw_map.reset (); + back_map.reset (); + } + + void resize (unsigned pop) + { + forw_map.resize (pop); + back_map.resize (pop); + } + + bool in_error () const { return forw_map.in_error () || back_map.in_error (); } + + void set (hb_codepoint_t lhs, hb_codepoint_t rhs) + { + if (in_error ()) return; + if (unlikely (lhs == HB_MAP_VALUE_INVALID)) return; + if (unlikely (rhs == HB_MAP_VALUE_INVALID)) { del (lhs); return; } + + forw_map.set (lhs, rhs); + if (unlikely (in_error ())) return; + + back_map.set (rhs, lhs); + if (unlikely (in_error ())) forw_map.del (lhs); + } + + hb_codepoint_t get (hb_codepoint_t lhs) const { return forw_map.get (lhs); } + hb_codepoint_t backward (hb_codepoint_t rhs) const { return back_map.get (rhs); } + + hb_codepoint_t operator [] (hb_codepoint_t lhs) const { return get (lhs); } + bool has (hb_codepoint_t lhs) const { return forw_map.has (lhs); } + + + void del (hb_codepoint_t lhs) + { + back_map.del (get (lhs)); + forw_map.del (lhs); + } + + void clear () + { + forw_map.clear (); + back_map.clear (); + } + + bool is_empty () const { return forw_map.is_empty (); } + + unsigned int get_population () const { return forw_map.get_population (); } + + + protected: + hb_map_t forw_map; + hb_map_t back_map; + + public: + auto keys () const HB_AUTO_RETURN (+ forw_map.keys()) + auto values () const HB_AUTO_RETURN (+ forw_map.values()) + auto iter () const HB_AUTO_RETURN (+ forw_map.iter()) +}; + +/* Inremental bimap: only lhs is given, rhs is incrementally assigned */ +struct hb_inc_bimap_t : hb_bimap_t +{ + /* Add a mapping from lhs to rhs with a unique value if lhs is unknown. + * Return the rhs value as the result. + */ + hb_codepoint_t add (hb_codepoint_t lhs) + { + hb_codepoint_t rhs = forw_map[lhs]; + if (rhs == HB_MAP_VALUE_INVALID) + { + rhs = next_value++; + set (lhs, rhs); + } + return rhs; + } + + hb_codepoint_t skip () + { return next_value++; } + + hb_codepoint_t skip (unsigned count) + { return next_value += count; } + + hb_codepoint_t get_next_value () const + { return next_value; } + + void add_set (const hb_set_t *set) + { + hb_codepoint_t i = HB_SET_VALUE_INVALID; + while (hb_set_next (set, &i)) add (i); + } + + /* Create an identity map. */ + bool identity (unsigned int size) + { + clear (); + for (hb_codepoint_t i = 0; i < size; i++) set (i, i); + return !in_error (); + } + + protected: + static int cmp_id (const void* a, const void* b) + { return (int)*(const hb_codepoint_t *)a - (int)*(const hb_codepoint_t *)b; } + + public: + /* Optional: after finished adding all mappings in a random order, + * reassign rhs to lhs so that they are in the same order. */ + void sort () + { + hb_codepoint_t count = get_population (); + hb_vector_t work; + work.resize (count); + + for (hb_codepoint_t rhs = 0; rhs < count; rhs++) + work[rhs] = back_map[rhs]; + + work.qsort (cmp_id); + + clear (); + for (hb_codepoint_t rhs = 0; rhs < count; rhs++) + set (work[rhs], rhs); + } + + protected: + unsigned int next_value = 0; +}; + +#endif /* HB_BIMAP_HH */ diff --git a/gfx/harfbuzz/src/hb-bit-page.hh b/gfx/harfbuzz/src/hb-bit-page.hh new file mode 100644 index 0000000000..9b027ac590 --- /dev/null +++ b/gfx/harfbuzz/src/hb-bit-page.hh @@ -0,0 +1,340 @@ +/* + * Copyright © 2012,2017 Google, Inc. + * Copyright © 2021 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BIT_PAGE_HH +#define HB_BIT_PAGE_HH + +#include "hb.hh" + + +/* Compiler-assisted vectorization. */ + +/* Type behaving similar to vectorized vars defined using __attribute__((vector_size(...))), + * basically a fixed-size bitset. We can't use the compiler type because hb_vector_t cannot + * guarantee alignment requirements. */ +template +struct hb_vector_size_t +{ + elt_t& operator [] (unsigned int i) { return v[i]; } + const elt_t& operator [] (unsigned int i) const { return v[i]; } + + void init0 () + { + for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) + v[i] = 0; + } + void init1 () + { + for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) + v[i] = (elt_t) -1; + } + + template + hb_vector_size_t process (const Op& op) const + { + hb_vector_size_t r; + for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) + r.v[i] = op (v[i]); + return r; + } + template + hb_vector_size_t process (const Op& op, const hb_vector_size_t &o) const + { + hb_vector_size_t r; + for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) + r.v[i] = op (v[i], o.v[i]); + return r; + } + hb_vector_size_t operator | (const hb_vector_size_t &o) const + { return process (hb_bitwise_or, o); } + hb_vector_size_t operator & (const hb_vector_size_t &o) const + { return process (hb_bitwise_and, o); } + hb_vector_size_t operator ^ (const hb_vector_size_t &o) const + { return process (hb_bitwise_xor, o); } + hb_vector_size_t operator ~ () const + { return process (hb_bitwise_neg); } + + hb_array_t iter () const + { return hb_array (v); } + + private: + static_assert (0 == byte_size % sizeof (elt_t), ""); + elt_t v[byte_size / sizeof (elt_t)]; +}; + + +struct hb_bit_page_t +{ + void init0 () { v.init0 (); } + void init1 () { v.init1 (); } + + static inline constexpr unsigned len () + { return ARRAY_LENGTH_CONST (v); } + + bool is_empty () const + { + return + + hb_iter (v) + | hb_none + ; + } + uint32_t hash () const + { + return + + hb_iter (v) + | hb_reduce ([] (uint32_t h, const elt_t &_) { return h * 31 + hb_hash (_); }, (uint32_t) 0u) + ; + } + + void add (hb_codepoint_t g) { elt (g) |= mask (g); } + void del (hb_codepoint_t g) { elt (g) &= ~mask (g); } + void set (hb_codepoint_t g, bool value) { if (value) add (g); else del (g); } + bool get (hb_codepoint_t g) const { return elt (g) & mask (g); } + + void add_range (hb_codepoint_t a, hb_codepoint_t b) + { + elt_t *la = &elt (a); + elt_t *lb = &elt (b); + if (la == lb) + *la |= (mask (b) << 1) - mask(a); + else + { + *la |= ~(mask (a) - 1); + la++; + + hb_memset (la, 0xff, (char *) lb - (char *) la); + + *lb |= ((mask (b) << 1) - 1); + } + } + void del_range (hb_codepoint_t a, hb_codepoint_t b) + { + elt_t *la = &elt (a); + elt_t *lb = &elt (b); + if (la == lb) + *la &= ~((mask (b) << 1) - mask(a)); + else + { + *la &= mask (a) - 1; + la++; + + hb_memset (la, 0, (char *) lb - (char *) la); + + *lb &= ~((mask (b) << 1) - 1); + } + } + void set_range (hb_codepoint_t a, hb_codepoint_t b, bool v) + { if (v) add_range (a, b); else del_range (a, b); } + + + // Writes out page values to the array p. Returns the number of values + // written. At most size codepoints will be written. + unsigned int write (uint32_t base, + unsigned int start_value, + hb_codepoint_t *p, + unsigned int size) const + { + unsigned int start_v = start_value / ELT_BITS; + unsigned int start_bit = start_value & ELT_MASK; + unsigned int count = 0; + for (unsigned i = start_v; i < len () && count < size; i++) + { + elt_t bits = v[i]; + uint32_t v_base = base | (i * ELT_BITS); + for (unsigned int j = start_bit; j < ELT_BITS && count < size; j++) + { + if ((elt_t(1) << j) & bits) { + *p++ = v_base | j; + count++; + } + } + start_bit = 0; + } + return count; + } + + // Writes out the values NOT in this page to the array p. Returns the + // number of values written. At most size codepoints will be written. + // Returns the number of codepoints written. next_value holds the next value + // that should be written (if not present in this page). This is used to fill + // any missing value gaps between this page and the previous page, if any. + // next_value is updated to one more than the last value present in this page. + unsigned int write_inverted (uint32_t base, + unsigned int start_value, + hb_codepoint_t *p, + unsigned int size, + hb_codepoint_t *next_value) const + { + unsigned int start_v = start_value / ELT_BITS; + unsigned int start_bit = start_value & ELT_MASK; + unsigned int count = 0; + for (unsigned i = start_v; i < len () && count < size; i++) + { + elt_t bits = v[i]; + uint32_t v_offset = i * ELT_BITS; + for (unsigned int j = start_bit; j < ELT_BITS && count < size; j++) + { + if ((elt_t(1) << j) & bits) + { + hb_codepoint_t value = base | v_offset | j; + // Emit all the missing values from next_value up to value - 1. + for (hb_codepoint_t k = *next_value; k < value && count < size; k++) + { + *p++ = k; + count++; + } + // Skip over this value; + *next_value = value + 1; + } + } + start_bit = 0; + } + return count; + } + + bool is_equal (const hb_bit_page_t &other) const + { + for (unsigned i = 0; i < len (); i++) + if (v[i] != other.v[i]) + return false; + return true; + } + bool is_subset (const hb_bit_page_t &larger_page) const + { + for (unsigned i = 0; i < len (); i++) + if (~larger_page.v[i] & v[i]) + return false; + return true; + } + + unsigned int get_population () const + { + return + + hb_iter (v) + | hb_reduce ([] (unsigned pop, const elt_t &_) { return pop + hb_popcount (_); }, 0u) + ; + } + + bool next (hb_codepoint_t *codepoint) const + { + unsigned int m = (*codepoint + 1) & MASK; + if (!m) + { + *codepoint = INVALID; + return false; + } + unsigned int i = m / ELT_BITS; + unsigned int j = m & ELT_MASK; + + const elt_t vv = v[i] & ~((elt_t (1) << j) - 1); + for (const elt_t *p = &vv; i < len (); p = &v[++i]) + if (*p) + { + *codepoint = i * ELT_BITS + elt_get_min (*p); + return true; + } + + *codepoint = INVALID; + return false; + } + bool previous (hb_codepoint_t *codepoint) const + { + unsigned int m = (*codepoint - 1) & MASK; + if (m == MASK) + { + *codepoint = INVALID; + return false; + } + unsigned int i = m / ELT_BITS; + unsigned int j = m & ELT_MASK; + + /* Fancy mask to avoid shifting by elt_t bitsize, which is undefined. */ + const elt_t mask = j < 8 * sizeof (elt_t) - 1 ? + ((elt_t (1) << (j + 1)) - 1) : + (elt_t) -1; + const elt_t vv = v[i] & mask; + const elt_t *p = &vv; + while (true) + { + if (*p) + { + *codepoint = i * ELT_BITS + elt_get_max (*p); + return true; + } + if ((int) i <= 0) break; + p = &v[--i]; + } + + *codepoint = INVALID; + return false; + } + hb_codepoint_t get_min () const + { + for (unsigned int i = 0; i < len (); i++) + if (v[i]) + return i * ELT_BITS + elt_get_min (v[i]); + return INVALID; + } + hb_codepoint_t get_max () const + { + for (int i = len () - 1; i >= 0; i--) + if (v[i]) + return i * ELT_BITS + elt_get_max (v[i]); + return 0; + } + + static constexpr hb_codepoint_t INVALID = HB_SET_VALUE_INVALID; + + typedef unsigned long long elt_t; + static constexpr unsigned PAGE_BITS_LOG_2 = 9; // 512 bits + static constexpr unsigned PAGE_BITS = 1 << PAGE_BITS_LOG_2; + static_assert (1 << PAGE_BITS_LOG_2 == PAGE_BITS, ""); + static_assert ((PAGE_BITS & ((PAGE_BITS) - 1)) == 0, ""); + static constexpr unsigned PAGE_BITMASK = PAGE_BITS - 1; + + static unsigned int elt_get_min (const elt_t &elt) { return hb_ctz (elt); } + static unsigned int elt_get_max (const elt_t &elt) { return hb_bit_storage (elt) - 1; } + + typedef hb_vector_size_t vector_t; + + static constexpr unsigned ELT_BITS = sizeof (elt_t) * 8; + static constexpr unsigned ELT_MASK = ELT_BITS - 1; + + static constexpr unsigned BITS = sizeof (vector_t) * 8; + static constexpr unsigned MASK = BITS - 1; + static_assert ((unsigned) PAGE_BITS == (unsigned) BITS, ""); + + elt_t &elt (hb_codepoint_t g) { return v[(g & MASK) / ELT_BITS]; } + const elt_t& elt (hb_codepoint_t g) const { return v[(g & MASK) / ELT_BITS]; } + static constexpr elt_t mask (hb_codepoint_t g) { return elt_t (1) << (g & ELT_MASK); } + + vector_t v; +}; +static_assert (hb_bit_page_t::PAGE_BITS == sizeof (hb_bit_page_t) * 8, ""); + + +#endif /* HB_BIT_PAGE_HH */ diff --git a/gfx/harfbuzz/src/hb-bit-set-invertible.hh b/gfx/harfbuzz/src/hb-bit-set-invertible.hh new file mode 100644 index 0000000000..1eb1b1c209 --- /dev/null +++ b/gfx/harfbuzz/src/hb-bit-set-invertible.hh @@ -0,0 +1,378 @@ +/* + * Copyright © 2012,2017 Google, Inc. + * Copyright © 2021 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BIT_SET_INVERTIBLE_HH +#define HB_BIT_SET_INVERTIBLE_HH + +#include "hb.hh" +#include "hb-bit-set.hh" + + +struct hb_bit_set_invertible_t +{ + hb_bit_set_t s; + bool inverted = false; + + hb_bit_set_invertible_t () = default; + hb_bit_set_invertible_t (const hb_bit_set_invertible_t& o) = default; + hb_bit_set_invertible_t (hb_bit_set_invertible_t&& other) : hb_bit_set_invertible_t () { hb_swap (*this, other); } + hb_bit_set_invertible_t& operator= (const hb_bit_set_invertible_t& o) = default; + hb_bit_set_invertible_t& operator= (hb_bit_set_invertible_t&& other) { hb_swap (*this, other); return *this; } + friend void swap (hb_bit_set_invertible_t &a, hb_bit_set_invertible_t &b) + { + if (likely (!a.s.successful || !b.s.successful)) + return; + hb_swap (a.inverted, b.inverted); + hb_swap (a.s, b.s); + } + + void init () { s.init (); inverted = false; } + void fini () { s.fini (); } + void err () { s.err (); } + bool in_error () const { return s.in_error (); } + explicit operator bool () const { return !is_empty (); } + + void alloc (unsigned sz) { s.alloc (sz); } + void reset () + { + s.reset (); + inverted = false; + } + void clear () + { + s.clear (); + if (likely (s.successful)) + inverted = false; + } + void invert () + { + if (likely (s.successful)) + inverted = !inverted; + } + + bool is_inverted () const + { + return inverted; + } + + bool is_empty () const + { + hb_codepoint_t v = INVALID; + next (&v); + return v == INVALID; + } + uint32_t hash () const { return s.hash () ^ (uint32_t) inverted; } + + hb_codepoint_t get_min () const + { + hb_codepoint_t v = INVALID; + next (&v); + return v; + } + hb_codepoint_t get_max () const + { + hb_codepoint_t v = INVALID; + previous (&v); + return v; + } + unsigned int get_population () const + { return inverted ? INVALID - s.get_population () : s.get_population (); } + + + void add (hb_codepoint_t g) { unlikely (inverted) ? s.del (g) : s.add (g); } + bool add_range (hb_codepoint_t a, hb_codepoint_t b) + { return unlikely (inverted) ? ((void) s.del_range (a, b), true) : s.add_range (a, b); } + + template + void add_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { inverted ? s.del_array (array, count, stride) : s.add_array (array, count, stride); } + template + void add_array (const hb_array_t& arr) { add_array (&arr, arr.len ()); } + + /* Might return false if array looks unsorted. + * Used for faster rejection of corrupt data. */ + template + bool add_sorted_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { return inverted ? s.del_sorted_array (array, count, stride) : s.add_sorted_array (array, count, stride); } + template + bool add_sorted_array (const hb_sorted_array_t& arr) { return add_sorted_array (&arr, arr.len ()); } + + void del (hb_codepoint_t g) { unlikely (inverted) ? s.add (g) : s.del (g); } + void del_range (hb_codepoint_t a, hb_codepoint_t b) + { unlikely (inverted) ? (void) s.add_range (a, b) : s.del_range (a, b); } + + bool get (hb_codepoint_t g) const { return s.get (g) ^ inverted; } + + /* Has interface. */ + bool operator [] (hb_codepoint_t k) const { return get (k); } + bool has (hb_codepoint_t k) const { return (*this)[k]; } + /* Predicate. */ + bool operator () (hb_codepoint_t k) const { return has (k); } + + /* Sink interface. */ + hb_bit_set_invertible_t& operator << (hb_codepoint_t v) + { add (v); return *this; } + hb_bit_set_invertible_t& operator << (const hb_pair_t& range) + { add_range (range.first, range.second); return *this; } + + bool intersects (hb_codepoint_t first, hb_codepoint_t last) const + { + hb_codepoint_t c = first - 1; + return next (&c) && c <= last; + } + + void set (const hb_bit_set_invertible_t &other) + { + s.set (other.s); + if (likely (s.successful)) + inverted = other.inverted; + } + + bool is_equal (const hb_bit_set_invertible_t &other) const + { + if (likely (inverted == other.inverted)) + return s.is_equal (other.s); + else + { + /* TODO Add iter_ranges() and use here. */ + auto it1 = iter (); + auto it2 = other.iter (); + return hb_all (+ hb_zip (it1, it2) + | hb_map ([](hb_pair_t _) { return _.first == _.second; })); + } + } + + bool is_subset (const hb_bit_set_invertible_t &larger_set) const + { + if (unlikely (inverted != larger_set.inverted)) + return hb_all (hb_iter (s) | hb_map (larger_set.s)); + else + return unlikely (inverted) ? larger_set.s.is_subset (s) : s.is_subset (larger_set.s); + } + + protected: + template + void process (const Op& op, const hb_bit_set_invertible_t &other) + { s.process (op, other.s); } + public: + void union_ (const hb_bit_set_invertible_t &other) + { + if (likely (inverted == other.inverted)) + { + if (unlikely (inverted)) + process (hb_bitwise_and, other); + else + process (hb_bitwise_or, other); /* Main branch. */ + } + else + { + if (unlikely (inverted)) + process (hb_bitwise_gt, other); + else + process (hb_bitwise_lt, other); + } + if (likely (s.successful)) + inverted = inverted || other.inverted; + } + void intersect (const hb_bit_set_invertible_t &other) + { + if (likely (inverted == other.inverted)) + { + if (unlikely (inverted)) + process (hb_bitwise_or, other); + else + process (hb_bitwise_and, other); /* Main branch. */ + } + else + { + if (unlikely (inverted)) + process (hb_bitwise_lt, other); + else + process (hb_bitwise_gt, other); + } + if (likely (s.successful)) + inverted = inverted && other.inverted; + } + void subtract (const hb_bit_set_invertible_t &other) + { + if (likely (inverted == other.inverted)) + { + if (unlikely (inverted)) + process (hb_bitwise_lt, other); + else + process (hb_bitwise_gt, other); /* Main branch. */ + } + else + { + if (unlikely (inverted)) + process (hb_bitwise_or, other); + else + process (hb_bitwise_and, other); + } + if (likely (s.successful)) + inverted = inverted && !other.inverted; + } + void symmetric_difference (const hb_bit_set_invertible_t &other) + { + process (hb_bitwise_xor, other); + if (likely (s.successful)) + inverted = inverted ^ other.inverted; + } + + bool next (hb_codepoint_t *codepoint) const + { + if (likely (!inverted)) + return s.next (codepoint); + + auto old = *codepoint; + if (unlikely (old + 1 == INVALID)) + { + *codepoint = INVALID; + return false; + } + + auto v = old; + s.next (&v); + if (old + 1 < v) + { + *codepoint = old + 1; + return true; + } + + v = old; + s.next_range (&old, &v); + + *codepoint = v + 1; + return *codepoint != INVALID; + } + bool previous (hb_codepoint_t *codepoint) const + { + if (likely (!inverted)) + return s.previous (codepoint); + + auto old = *codepoint; + if (unlikely (old - 1 == INVALID)) + { + *codepoint = INVALID; + return false; + } + + auto v = old; + s.previous (&v); + + if (old - 1 > v || v == INVALID) + { + *codepoint = old - 1; + return true; + } + + v = old; + s.previous_range (&v, &old); + + *codepoint = v - 1; + return *codepoint != INVALID; + } + bool next_range (hb_codepoint_t *first, hb_codepoint_t *last) const + { + if (likely (!inverted)) + return s.next_range (first, last); + + if (!next (last)) + { + *last = *first = INVALID; + return false; + } + + *first = *last; + s.next (last); + --*last; + return true; + } + bool previous_range (hb_codepoint_t *first, hb_codepoint_t *last) const + { + if (likely (!inverted)) + return s.previous_range (first, last); + + if (!previous (first)) + { + *last = *first = INVALID; + return false; + } + + *last = *first; + s.previous (first); + ++*first; + return true; + } + + unsigned int next_many (hb_codepoint_t codepoint, + hb_codepoint_t *out, + unsigned int size) const + { + return inverted ? s.next_many_inverted (codepoint, out, size) + : s.next_many (codepoint, out, size); + } + + static constexpr hb_codepoint_t INVALID = hb_bit_set_t::INVALID; + + /* + * Iterator implementation. + */ + struct iter_t : hb_iter_with_fallback_t + { + static constexpr bool is_sorted_iterator = true; + iter_t (const hb_bit_set_invertible_t &s_ = Null (hb_bit_set_invertible_t), + bool init = true) : s (&s_), v (INVALID), l(0) + { + if (init) + { + l = s->get_population () + 1; + __next__ (); + } + } + + typedef hb_codepoint_t __item_t__; + hb_codepoint_t __item__ () const { return v; } + bool __more__ () const { return v != INVALID; } + void __next__ () { s->next (&v); if (l) l--; } + void __prev__ () { s->previous (&v); } + unsigned __len__ () const { return l; } + iter_t end () const { return iter_t (*s, false); } + bool operator != (const iter_t& o) const + { return s != o.s || v != o.v; } + + protected: + const hb_bit_set_invertible_t *s; + hb_codepoint_t v; + unsigned l; + }; + iter_t iter () const { return iter_t (*this); } + operator iter_t () const { return iter (); } +}; + + +#endif /* HB_BIT_SET_INVERTIBLE_HH */ diff --git a/gfx/harfbuzz/src/hb-bit-set.hh b/gfx/harfbuzz/src/hb-bit-set.hh new file mode 100644 index 0000000000..d290f6114c --- /dev/null +++ b/gfx/harfbuzz/src/hb-bit-set.hh @@ -0,0 +1,967 @@ +/* + * Copyright © 2012,2017 Google, Inc. + * Copyright © 2021 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BIT_SET_HH +#define HB_BIT_SET_HH + +#include "hb.hh" +#include "hb-bit-page.hh" +#include "hb-machinery.hh" + + +struct hb_bit_set_t +{ + hb_bit_set_t () = default; + ~hb_bit_set_t () = default; + + hb_bit_set_t (const hb_bit_set_t& other) : hb_bit_set_t () { set (other, true); } + hb_bit_set_t ( hb_bit_set_t&& other) : hb_bit_set_t () { hb_swap (*this, other); } + hb_bit_set_t& operator= (const hb_bit_set_t& other) { set (other); return *this; } + hb_bit_set_t& operator= (hb_bit_set_t&& other) { hb_swap (*this, other); return *this; } + friend void swap (hb_bit_set_t &a, hb_bit_set_t &b) + { + if (likely (!a.successful || !b.successful)) + return; + hb_swap (a.population, b.population); + hb_swap (a.last_page_lookup, b.last_page_lookup); + hb_swap (a.page_map, b.page_map); + hb_swap (a.pages, b.pages); + } + + void init () + { + successful = true; + population = 0; + last_page_lookup = 0; + page_map.init (); + pages.init (); + } + void fini () + { + page_map.fini (); + pages.fini (); + } + + using page_t = hb_bit_page_t; + struct page_map_t + { + int cmp (const page_map_t &o) const { return cmp (o.major); } + int cmp (uint32_t o_major) const { return (int) o_major - (int) major; } + + uint32_t major; + uint32_t index; + }; + + bool successful = true; /* Allocations successful */ + mutable unsigned int population = 0; + mutable hb_atomic_int_t last_page_lookup = 0; + hb_sorted_vector_t page_map; + hb_vector_t pages; + + void err () { if (successful) successful = false; } /* TODO Remove */ + bool in_error () const { return !successful; } + + bool resize (unsigned int count, bool clear = true, bool exact_size = false) + { + if (unlikely (!successful)) return false; + + if (pages.length == 0 && count == 1) + exact_size = true; // Most sets are small and local + + if (unlikely (!pages.resize (count, clear, exact_size) || !page_map.resize (count, clear, exact_size))) + { + pages.resize (page_map.length, clear, exact_size); + successful = false; + return false; + } + return true; + } + + void alloc (unsigned sz) + { + sz >>= (page_t::PAGE_BITS_LOG_2 - 1); + pages.alloc (sz); + page_map.alloc (sz); + } + + void reset () + { + successful = true; + clear (); + } + + void clear () + { + resize (0); + if (likely (successful)) + population = 0; + } + bool is_empty () const + { + unsigned int count = pages.length; + for (unsigned int i = 0; i < count; i++) + if (!pages[i].is_empty ()) + return false; + return true; + } + explicit operator bool () const { return !is_empty (); } + + uint32_t hash () const + { + uint32_t h = 0; + for (auto &map : page_map) + h = h * 31 + hb_hash (map.major) + hb_hash (pages[map.index]); + return h; + } + + private: + void dirty () { population = UINT_MAX; } + public: + + void add (hb_codepoint_t g) + { + if (unlikely (!successful)) return; + if (unlikely (g == INVALID)) return; + dirty (); + page_t *page = page_for (g, true); if (unlikely (!page)) return; + page->add (g); + } + bool add_range (hb_codepoint_t a, hb_codepoint_t b) + { + if (unlikely (!successful)) return true; /* https://github.com/harfbuzz/harfbuzz/issues/657 */ + if (unlikely (a > b || a == INVALID || b == INVALID)) return false; + dirty (); + unsigned int ma = get_major (a); + unsigned int mb = get_major (b); + if (ma == mb) + { + page_t *page = page_for (a, true); if (unlikely (!page)) return false; + page->add_range (a, b); + } + else + { + page_t *page = page_for (a, true); if (unlikely (!page)) return false; + page->add_range (a, major_start (ma + 1) - 1); + + for (unsigned int m = ma + 1; m < mb; m++) + { + page = page_for (major_start (m), true); if (unlikely (!page)) return false; + page->init1 (); + } + + page = page_for (b, true); if (unlikely (!page)) return false; + page->add_range (major_start (mb), b); + } + return true; + } + + template + void set_array (bool v, const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { + if (unlikely (!successful)) return; + if (!count) return; + dirty (); + hb_codepoint_t g = *array; + while (count) + { + unsigned int m = get_major (g); + page_t *page = page_for (g, v); if (unlikely (v && !page)) return; + unsigned int start = major_start (m); + unsigned int end = major_start (m + 1); + do + { + if (g != INVALID && (v || page)) /* The v check is to optimize out the page check if v is true. */ + page->set (g, v); + + array = &StructAtOffsetUnaligned (array, stride); + count--; + } + while (count && (g = *array, start <= g && g < end)); + } + } + + template + void add_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { set_array (true, array, count, stride); } + template + void add_array (const hb_array_t& arr) { add_array (&arr, arr.len ()); } + + template + void del_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { set_array (false, array, count, stride); } + template + void del_array (const hb_array_t& arr) { del_array (&arr, arr.len ()); } + + /* Might return false if array looks unsorted. + * Used for faster rejection of corrupt data. */ + template + bool set_sorted_array (bool v, const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { + if (unlikely (!successful)) return true; /* https://github.com/harfbuzz/harfbuzz/issues/657 */ + if (unlikely (!count)) return true; + dirty (); + hb_codepoint_t g = *array; + hb_codepoint_t last_g = g; + while (count) + { + unsigned int m = get_major (g); + page_t *page = page_for (g, v); if (unlikely (v && !page)) return false; + unsigned int end = major_start (m + 1); + do + { + /* If we try harder we can change the following comparison to <=; + * Not sure if it's worth it. */ + if (g < last_g) return false; + last_g = g; + + if (g != INVALID && (v || page)) /* The v check is to optimize out the page check if v is true. */ + page->add (g); + + array = &StructAtOffsetUnaligned (array, stride); + count--; + } + while (count && (g = *array, g < end)); + } + return true; + } + + template + bool add_sorted_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { return set_sorted_array (true, array, count, stride); } + template + bool add_sorted_array (const hb_sorted_array_t& arr) { return add_sorted_array (&arr, arr.len ()); } + + template + bool del_sorted_array (const T *array, unsigned int count, unsigned int stride=sizeof(T)) + { return set_sorted_array (false, array, count, stride); } + template + bool del_sorted_array (const hb_sorted_array_t& arr) { return del_sorted_array (&arr, arr.len ()); } + + void del (hb_codepoint_t g) + { + if (unlikely (!successful)) return; + page_t *page = page_for (g); + if (!page) + return; + dirty (); + page->del (g); + } + + private: + void del_pages (int ds, int de) + { + if (ds <= de) + { + // Pre-allocate the workspace that compact() will need so we can bail on allocation failure + // before attempting to rewrite the page map. + hb_vector_t compact_workspace; + if (unlikely (!allocate_compact_workspace (compact_workspace))) return; + + unsigned int write_index = 0; + for (unsigned int i = 0; i < page_map.length; i++) + { + int m = (int) page_map[i].major; + if (m < ds || de < m) + page_map[write_index++] = page_map[i]; + } + compact (compact_workspace, write_index); + resize (write_index); + } + } + + + public: + void del_range (hb_codepoint_t a, hb_codepoint_t b) + { + if (unlikely (!successful)) return; + if (unlikely (a > b || a == INVALID)) return; + dirty (); + unsigned int ma = get_major (a); + unsigned int mb = get_major (b); + /* Delete pages from ds through de if ds <= de. */ + int ds = (a == major_start (ma))? (int) ma: (int) (ma + 1); + int de = (b + 1 == major_start (mb + 1))? (int) mb: ((int) mb - 1); + if (ds > de || (int) ma < ds) + { + page_t *page = page_for (a); + if (page) + { + if (ma == mb) + page->del_range (a, b); + else + page->del_range (a, major_start (ma + 1) - 1); + } + } + if (de < (int) mb && ma != mb) + { + page_t *page = page_for (b); + if (page) + page->del_range (major_start (mb), b); + } + del_pages (ds, de); + } + + bool get (hb_codepoint_t g) const + { + const page_t *page = page_for (g); + if (!page) + return false; + return page->get (g); + } + + /* Has interface. */ + bool operator [] (hb_codepoint_t k) const { return get (k); } + bool has (hb_codepoint_t k) const { return (*this)[k]; } + /* Predicate. */ + bool operator () (hb_codepoint_t k) const { return has (k); } + + /* Sink interface. */ + hb_bit_set_t& operator << (hb_codepoint_t v) + { add (v); return *this; } + hb_bit_set_t& operator << (const hb_pair_t& range) + { add_range (range.first, range.second); return *this; } + + bool intersects (hb_codepoint_t first, hb_codepoint_t last) const + { + hb_codepoint_t c = first - 1; + return next (&c) && c <= last; + } + void set (const hb_bit_set_t &other, bool exact_size = false) + { + if (unlikely (!successful)) return; + unsigned int count = other.pages.length; + if (unlikely (!resize (count, false, exact_size))) + return; + population = other.population; + + page_map = other.page_map; + pages = other.pages; + } + + bool is_equal (const hb_bit_set_t &other) const + { + if (has_population () && other.has_population () && + population != other.population) + return false; + + unsigned int na = pages.length; + unsigned int nb = other.pages.length; + + unsigned int a = 0, b = 0; + for (; a < na && b < nb; ) + { + if (page_at (a).is_empty ()) { a++; continue; } + if (other.page_at (b).is_empty ()) { b++; continue; } + if (page_map[a].major != other.page_map[b].major || + !page_at (a).is_equal (other.page_at (b))) + return false; + a++; + b++; + } + for (; a < na; a++) + if (!page_at (a).is_empty ()) { return false; } + for (; b < nb; b++) + if (!other.page_at (b).is_empty ()) { return false; } + + return true; + } + + bool is_subset (const hb_bit_set_t &larger_set) const + { + if (has_population () && larger_set.has_population () && + population > larger_set.population) + return false; + + uint32_t spi = 0; + for (uint32_t lpi = 0; spi < page_map.length && lpi < larger_set.page_map.length; lpi++) + { + uint32_t spm = page_map[spi].major; + uint32_t lpm = larger_set.page_map[lpi].major; + auto sp = page_at (spi); + + if (spm < lpm && !sp.is_empty ()) + return false; + + if (lpm < spm) + continue; + + auto lp = larger_set.page_at (lpi); + if (!sp.is_subset (lp)) + return false; + + spi++; + } + + while (spi < page_map.length) + if (!page_at (spi++).is_empty ()) + return false; + + return true; + } + + private: + bool allocate_compact_workspace (hb_vector_t& workspace) + { + if (unlikely (!workspace.resize_exact (pages.length))) + { + successful = false; + return false; + } + + return true; + } + + /* + * workspace should be a pre-sized vector allocated to hold at exactly pages.length + * elements. + */ + void compact (hb_vector_t& workspace, + unsigned int length) + { + assert(workspace.length == pages.length); + hb_vector_t& old_index_to_page_map_index = workspace; + + hb_fill (old_index_to_page_map_index.writer(), 0xFFFFFFFF); + for (unsigned i = 0; i < length; i++) + old_index_to_page_map_index[page_map[i].index] = i; + + compact_pages (old_index_to_page_map_index); + } + void compact_pages (const hb_vector_t& old_index_to_page_map_index) + { + unsigned int write_index = 0; + for (unsigned int i = 0; i < pages.length; i++) + { + if (old_index_to_page_map_index[i] == 0xFFFFFFFF) continue; + + if (write_index < i) + pages[write_index] = pages[i]; + + page_map[old_index_to_page_map_index[i]].index = write_index; + write_index++; + } + } + public: + + void process_ (hb_bit_page_t::vector_t (*op) (const hb_bit_page_t::vector_t &, const hb_bit_page_t::vector_t &), + bool passthru_left, bool passthru_right, + const hb_bit_set_t &other) + { + if (unlikely (!successful)) return; + + dirty (); + + unsigned int na = pages.length; + unsigned int nb = other.pages.length; + unsigned int next_page = na; + + unsigned int count = 0, newCount = 0; + unsigned int a = 0, b = 0; + unsigned int write_index = 0; + + // Pre-allocate the workspace that compact() will need so we can bail on allocation failure + // before attempting to rewrite the page map. + hb_vector_t compact_workspace; + if (!passthru_left && unlikely (!allocate_compact_workspace (compact_workspace))) return; + + for (; a < na && b < nb; ) + { + if (page_map[a].major == other.page_map[b].major) + { + if (!passthru_left) + { + // Move page_map entries that we're keeping from the left side set + // to the front of the page_map vector. This isn't necessary if + // passthru_left is set since no left side pages will be removed + // in that case. + if (write_index < a) + page_map[write_index] = page_map[a]; + write_index++; + } + + count++; + a++; + b++; + } + else if (page_map[a].major < other.page_map[b].major) + { + if (passthru_left) + count++; + a++; + } + else + { + if (passthru_right) + count++; + b++; + } + } + if (passthru_left) + count += na - a; + if (passthru_right) + count += nb - b; + + if (!passthru_left) + { + na = write_index; + next_page = write_index; + compact (compact_workspace, write_index); + } + + if (unlikely (!resize (count))) + return; + + newCount = count; + + /* Process in-place backward. */ + a = na; + b = nb; + for (; a && b; ) + { + if (page_map.arrayZ[a - 1].major == other.page_map.arrayZ[b - 1].major) + { + a--; + b--; + count--; + page_map.arrayZ[count] = page_map.arrayZ[a]; + page_at (count).v = op (page_at (a).v, other.page_at (b).v); + } + else if (page_map.arrayZ[a - 1].major > other.page_map.arrayZ[b - 1].major) + { + a--; + if (passthru_left) + { + count--; + page_map.arrayZ[count] = page_map.arrayZ[a]; + } + } + else + { + b--; + if (passthru_right) + { + count--; + page_map.arrayZ[count].major = other.page_map.arrayZ[b].major; + page_map.arrayZ[count].index = next_page++; + page_at (count).v = other.page_at (b).v; + } + } + } + if (passthru_left) + while (a) + { + a--; + count--; + page_map.arrayZ[count] = page_map.arrayZ[a]; + } + if (passthru_right) + while (b) + { + b--; + count--; + page_map.arrayZ[count].major = other.page_map.arrayZ[b].major; + page_map.arrayZ[count].index = next_page++; + page_at (count).v = other.page_at (b).v; + } + assert (!count); + resize (newCount); + } + template + static hb_bit_page_t::vector_t + op_ (const hb_bit_page_t::vector_t &a, const hb_bit_page_t::vector_t &b) + { return Op{} (a, b); } + template + void process (const Op& op, const hb_bit_set_t &other) + { + process_ (op_, op (1, 0), op (0, 1), other); + } + + void union_ (const hb_bit_set_t &other) { process (hb_bitwise_or, other); } + void intersect (const hb_bit_set_t &other) { process (hb_bitwise_and, other); } + void subtract (const hb_bit_set_t &other) { process (hb_bitwise_gt, other); } + void symmetric_difference (const hb_bit_set_t &other) { process (hb_bitwise_xor, other); } + + bool next (hb_codepoint_t *codepoint) const + { + if (unlikely (*codepoint == INVALID)) { + *codepoint = get_min (); + return *codepoint != INVALID; + } + + const auto* page_map_array = page_map.arrayZ; + unsigned int major = get_major (*codepoint); + unsigned int i = last_page_lookup; + + if (unlikely (i >= page_map.length || page_map_array[i].major != major)) + { + page_map.bfind (major, &i, HB_NOT_FOUND_STORE_CLOSEST); + if (i >= page_map.length) { + *codepoint = INVALID; + return false; + } + last_page_lookup = i; + } + + const auto* pages_array = pages.arrayZ; + const page_map_t ¤t = page_map_array[i]; + if (likely (current.major == major)) + { + if (pages_array[current.index].next (codepoint)) + { + *codepoint += current.major * page_t::PAGE_BITS; + return true; + } + i++; + } + + for (; i < page_map.length; i++) + { + const page_map_t ¤t = page_map_array[i]; + hb_codepoint_t m = pages_array[current.index].get_min (); + if (m != INVALID) + { + *codepoint = current.major * page_t::PAGE_BITS + m; + last_page_lookup = i; + return true; + } + } + *codepoint = INVALID; + return false; + } + bool previous (hb_codepoint_t *codepoint) const + { + if (unlikely (*codepoint == INVALID)) { + *codepoint = get_max (); + return *codepoint != INVALID; + } + + page_map_t map = {get_major (*codepoint), 0}; + unsigned int i; + page_map.bfind (map, &i, HB_NOT_FOUND_STORE_CLOSEST); + if (i < page_map.length && page_map.arrayZ[i].major == map.major) + { + if (pages[page_map.arrayZ[i].index].previous (codepoint)) + { + *codepoint += page_map.arrayZ[i].major * page_t::PAGE_BITS; + return true; + } + } + i--; + for (; (int) i >= 0; i--) + { + hb_codepoint_t m = pages.arrayZ[page_map.arrayZ[i].index].get_max (); + if (m != INVALID) + { + *codepoint = page_map.arrayZ[i].major * page_t::PAGE_BITS + m; + return true; + } + } + *codepoint = INVALID; + return false; + } + bool next_range (hb_codepoint_t *first, hb_codepoint_t *last) const + { + hb_codepoint_t i; + + i = *last; + if (!next (&i)) + { + *last = *first = INVALID; + return false; + } + + /* TODO Speed up. */ + *last = *first = i; + while (next (&i) && i == *last + 1) + (*last)++; + + return true; + } + bool previous_range (hb_codepoint_t *first, hb_codepoint_t *last) const + { + hb_codepoint_t i; + + i = *first; + if (!previous (&i)) + { + *last = *first = INVALID; + return false; + } + + /* TODO Speed up. */ + *last = *first = i; + while (previous (&i) && i == *first - 1) + (*first)--; + + return true; + } + + unsigned int next_many (hb_codepoint_t codepoint, + hb_codepoint_t *out, + unsigned int size) const + { + // By default, start at the first bit of the first page of values. + unsigned int start_page = 0; + unsigned int start_page_value = 0; + if (unlikely (codepoint != INVALID)) + { + const auto* page_map_array = page_map.arrayZ; + unsigned int major = get_major (codepoint); + unsigned int i = last_page_lookup; + if (unlikely (i >= page_map.length || page_map_array[i].major != major)) + { + page_map.bfind (major, &i, HB_NOT_FOUND_STORE_CLOSEST); + if (i >= page_map.length) + return 0; // codepoint is greater than our max element. + } + start_page = i; + start_page_value = page_remainder (codepoint + 1); + if (unlikely (start_page_value == 0)) + { + // The export-after value was last in the page. Start on next page. + start_page++; + start_page_value = 0; + } + } + + unsigned int initial_size = size; + for (unsigned int i = start_page; i < page_map.length && size; i++) + { + uint32_t base = major_start (page_map[i].major); + unsigned int n = pages[page_map[i].index].write (base, start_page_value, out, size); + out += n; + size -= n; + start_page_value = 0; + } + return initial_size - size; + } + + unsigned int next_many_inverted (hb_codepoint_t codepoint, + hb_codepoint_t *out, + unsigned int size) const + { + unsigned int initial_size = size; + // By default, start at the first bit of the first page of values. + unsigned int start_page = 0; + unsigned int start_page_value = 0; + if (unlikely (codepoint != INVALID)) + { + const auto* page_map_array = page_map.arrayZ; + unsigned int major = get_major (codepoint); + unsigned int i = last_page_lookup; + if (unlikely (i >= page_map.length || page_map_array[i].major != major)) + { + page_map.bfind(major, &i, HB_NOT_FOUND_STORE_CLOSEST); + if (unlikely (i >= page_map.length)) + { + // codepoint is greater than our max element. + while (++codepoint != INVALID && size) + { + *out++ = codepoint; + size--; + } + return initial_size - size; + } + } + start_page = i; + start_page_value = page_remainder (codepoint + 1); + if (unlikely (start_page_value == 0)) + { + // The export-after value was last in the page. Start on next page. + start_page++; + start_page_value = 0; + } + } + + hb_codepoint_t next_value = codepoint + 1; + for (unsigned int i=start_page; i= 0; i--) + { + const auto& map = page_map[(unsigned) i]; + const auto& page = pages[map.index]; + + if (!page.is_empty ()) + return map.major * page_t::PAGE_BITS + page.get_max (); + } + return INVALID; + } + + static constexpr hb_codepoint_t INVALID = page_t::INVALID; + + /* + * Iterator implementation. + */ + struct iter_t : hb_iter_with_fallback_t + { + static constexpr bool is_sorted_iterator = true; + iter_t (const hb_bit_set_t &s_ = Null (hb_bit_set_t), + bool init = true) : s (&s_), v (INVALID), l(0) + { + if (init) + { + l = s->get_population () + 1; + __next__ (); + } + } + + typedef hb_codepoint_t __item_t__; + hb_codepoint_t __item__ () const { return v; } + bool __more__ () const { return v != INVALID; } + void __next__ () { s->next (&v); if (l) l--; } + void __prev__ () { s->previous (&v); } + unsigned __len__ () const { return l; } + iter_t end () const { return iter_t (*s, false); } + bool operator != (const iter_t& o) const + { return s != o.s || v != o.v; } + + protected: + const hb_bit_set_t *s; + hb_codepoint_t v; + unsigned l; + }; + iter_t iter () const { return iter_t (*this); } + operator iter_t () const { return iter (); } + + protected: + + page_t *page_for (hb_codepoint_t g, bool insert = false) + { + unsigned major = get_major (g); + + /* The extra page_map length is necessary; can't just rely on vector here, + * since the next check would be tricked because a null page also has + * major==0, which we can't distinguish from an actualy major==0 page... */ + unsigned i = last_page_lookup; + if (likely (i < page_map.length)) + { + auto &cached_page = page_map.arrayZ[i]; + if (cached_page.major == major) + return &pages.arrayZ[cached_page.index]; + } + + page_map_t map = {major, pages.length}; + if (!page_map.bfind (map, &i, HB_NOT_FOUND_STORE_CLOSEST)) + { + if (!insert) + return nullptr; + + if (unlikely (!resize (pages.length + 1))) + return nullptr; + + pages.arrayZ[map.index].init0 (); + memmove (page_map.arrayZ + i + 1, + page_map.arrayZ + i, + (page_map.length - 1 - i) * page_map.item_size); + page_map.arrayZ[i] = map; + } + + last_page_lookup = i; + return &pages.arrayZ[page_map.arrayZ[i].index]; + } + const page_t *page_for (hb_codepoint_t g) const + { + unsigned major = get_major (g); + + /* The extra page_map length is necessary; can't just rely on vector here, + * since the next check would be tricked because a null page also has + * major==0, which we can't distinguish from an actualy major==0 page... */ + unsigned i = last_page_lookup; + if (likely (i < page_map.length)) + { + auto &cached_page = page_map.arrayZ[i]; + if (cached_page.major == major) + return &pages.arrayZ[cached_page.index]; + } + + page_map_t key = {major}; + if (!page_map.bfind (key, &i)) + return nullptr; + + last_page_lookup = i; + return &pages.arrayZ[page_map[i].index]; + } + page_t &page_at (unsigned int i) + { + assert (i < page_map.length); + return pages.arrayZ[page_map.arrayZ[i].index]; + } + const page_t &page_at (unsigned int i) const + { + assert (i < page_map.length); + return pages.arrayZ[page_map.arrayZ[i].index]; + } + unsigned int get_major (hb_codepoint_t g) const { return g >> page_t::PAGE_BITS_LOG_2; } + unsigned int page_remainder (hb_codepoint_t g) const { return g & page_t::PAGE_BITMASK; } + hb_codepoint_t major_start (unsigned int major) const { return major << page_t::PAGE_BITS_LOG_2; } +}; + + +#endif /* HB_BIT_SET_HH */ diff --git a/gfx/harfbuzz/src/hb-blob.cc b/gfx/harfbuzz/src/hb-blob.cc new file mode 100644 index 0000000000..265effba03 --- /dev/null +++ b/gfx/harfbuzz/src/hb-blob.cc @@ -0,0 +1,775 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + */ + +#include "hb.hh" +#include "hb-blob.hh" + +#ifdef HAVE_SYS_MMAN_H +#ifdef HAVE_UNISTD_H +#include +#endif /* HAVE_UNISTD_H */ +#include +#endif /* HAVE_SYS_MMAN_H */ + + +/** + * SECTION: hb-blob + * @title: hb-blob + * @short_description: Binary data containers + * @include: hb.h + * + * Blobs wrap a chunk of binary data to handle lifecycle management of data + * while it is passed between client and HarfBuzz. Blobs are primarily used + * to create font faces, but also to access font face tables, as well as + * pass around other binary data. + **/ + + +/** + * hb_blob_create: (skip) + * @data: Pointer to blob data. + * @length: Length of @data in bytes. + * @mode: Memory mode for @data. + * @user_data: Data parameter to pass to @destroy. + * @destroy: (nullable): Callback to call when @data is not needed anymore. + * + * Creates a new "blob" object wrapping @data. The @mode parameter is used + * to negotiate ownership and lifecycle of @data. + * + * Return value: New blob, or the empty blob if something failed or if @length is + * zero. Destroy with hb_blob_destroy(). + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_blob_create (const char *data, + unsigned int length, + hb_memory_mode_t mode, + void *user_data, + hb_destroy_func_t destroy) +{ + if (!length) + { + if (destroy) + destroy (user_data); + return hb_blob_get_empty (); + } + + hb_blob_t *blob = hb_blob_create_or_fail (data, length, mode, + user_data, destroy); + return likely (blob) ? blob : hb_blob_get_empty (); +} + +/** + * hb_blob_create_or_fail: (skip) + * @data: Pointer to blob data. + * @length: Length of @data in bytes. + * @mode: Memory mode for @data. + * @user_data: Data parameter to pass to @destroy. + * @destroy: (nullable): Callback to call when @data is not needed anymore. + * + * Creates a new "blob" object wrapping @data. The @mode parameter is used + * to negotiate ownership and lifecycle of @data. + * + * Note that this function returns a freshly-allocated empty blob even if @length + * is zero. This is in contrast to hb_blob_create(), which returns the singleton + * empty blob (as returned by hb_blob_get_empty()) if @length is zero. + * + * Return value: New blob, or `NULL` if failed. Destroy with hb_blob_destroy(). + * + * Since: 2.8.2 + **/ +hb_blob_t * +hb_blob_create_or_fail (const char *data, + unsigned int length, + hb_memory_mode_t mode, + void *user_data, + hb_destroy_func_t destroy) +{ + hb_blob_t *blob; + + if (length >= 1u << 31 || + !(blob = hb_object_create ())) + { + if (destroy) + destroy (user_data); + return nullptr; + } + + blob->data = data; + blob->length = length; + blob->mode = mode; + + blob->user_data = user_data; + blob->destroy = destroy; + + if (blob->mode == HB_MEMORY_MODE_DUPLICATE) { + blob->mode = HB_MEMORY_MODE_READONLY; + if (!blob->try_make_writable ()) + { + hb_blob_destroy (blob); + return nullptr; + } + } + + return blob; +} + +static void +_hb_blob_destroy (void *data) +{ + hb_blob_destroy ((hb_blob_t *) data); +} + +/** + * hb_blob_create_sub_blob: + * @parent: Parent blob. + * @offset: Start offset of sub-blob within @parent, in bytes. + * @length: Length of sub-blob. + * + * Returns a blob that represents a range of bytes in @parent. The new + * blob is always created with #HB_MEMORY_MODE_READONLY, meaning that it + * will never modify data in the parent blob. The parent data is not + * expected to be modified, and will result in undefined behavior if it + * is. + * + * Makes @parent immutable. + * + * Return value: New blob, or the empty blob if something failed or if + * @length is zero or @offset is beyond the end of @parent's data. Destroy + * with hb_blob_destroy(). + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_blob_create_sub_blob (hb_blob_t *parent, + unsigned int offset, + unsigned int length) +{ + hb_blob_t *blob; + + if (!length || !parent || offset >= parent->length) + return hb_blob_get_empty (); + + hb_blob_make_immutable (parent); + + blob = hb_blob_create (parent->data + offset, + hb_min (length, parent->length - offset), + HB_MEMORY_MODE_READONLY, + hb_blob_reference (parent), + _hb_blob_destroy); + + return blob; +} + +/** + * hb_blob_copy_writable_or_fail: + * @blob: A blob. + * + * Makes a writable copy of @blob. + * + * Return value: The new blob, or nullptr if allocation failed + * + * Since: 1.8.0 + **/ +hb_blob_t * +hb_blob_copy_writable_or_fail (hb_blob_t *blob) +{ + blob = hb_blob_create (blob->data, + blob->length, + HB_MEMORY_MODE_DUPLICATE, + nullptr, + nullptr); + + if (unlikely (blob == hb_blob_get_empty ())) + blob = nullptr; + + return blob; +} + +/** + * hb_blob_get_empty: + * + * Returns the singleton empty blob. + * + * See TODO:link object types for more information. + * + * Return value: (transfer full): The empty blob. + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_blob_get_empty () +{ + return const_cast (&Null (hb_blob_t)); +} + +/** + * hb_blob_reference: (skip) + * @blob: a blob. + * + * Increases the reference count on @blob. + * + * See TODO:link object types for more information. + * + * Return value: @blob. + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_blob_reference (hb_blob_t *blob) +{ + return hb_object_reference (blob); +} + +/** + * hb_blob_destroy: (skip) + * @blob: a blob. + * + * Decreases the reference count on @blob, and if it reaches zero, destroys + * @blob, freeing all memory, possibly calling the destroy-callback the blob + * was created for if it has not been called already. + * + * See TODO:link object types for more information. + * + * Since: 0.9.2 + **/ +void +hb_blob_destroy (hb_blob_t *blob) +{ + if (!hb_object_destroy (blob)) return; + + hb_free (blob); +} + +/** + * hb_blob_set_user_data: (skip) + * @blob: An #hb_blob_t + * @key: The user-data key to set + * @data: A pointer to the user data to set + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified blob. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_blob_set_user_data (hb_blob_t *blob, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (blob, key, data, destroy, replace); +} + +/** + * hb_blob_get_user_data: (skip) + * @blob: a blob + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified font-functions structure. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 0.9.2 + **/ +void * +hb_blob_get_user_data (const hb_blob_t *blob, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (blob, key); +} + + +/** + * hb_blob_make_immutable: + * @blob: a blob + * + * Makes a blob immutable. + * + * Since: 0.9.2 + **/ +void +hb_blob_make_immutable (hb_blob_t *blob) +{ + if (hb_object_is_immutable (blob)) + return; + + hb_object_make_immutable (blob); +} + +/** + * hb_blob_is_immutable: + * @blob: a blob. + * + * Tests whether a blob is immutable. + * + * Return value: `true` if @blob is immutable, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_blob_is_immutable (hb_blob_t *blob) +{ + return hb_object_is_immutable (blob); +} + + +/** + * hb_blob_get_length: + * @blob: a blob. + * + * Fetches the length of a blob's data. + * + * Return value: the length of @blob data in bytes. + * + * Since: 0.9.2 + **/ +unsigned int +hb_blob_get_length (hb_blob_t *blob) +{ + return blob->length; +} + +/** + * hb_blob_get_data: + * @blob: a blob. + * @length: (out): The length in bytes of the data retrieved + * + * Fetches the data from a blob. + * + * Returns: (nullable) (transfer none) (array length=length): the byte data of @blob. + * + * Since: 0.9.2 + **/ +const char * +hb_blob_get_data (hb_blob_t *blob, unsigned int *length) +{ + if (length) + *length = blob->length; + + return blob->data; +} + +/** + * hb_blob_get_data_writable: + * @blob: a blob. + * @length: (out): output length of the writable data. + * + * Tries to make blob data writable (possibly copying it) and + * return pointer to data. + * + * Fails if blob has been made immutable, or if memory allocation + * fails. + * + * Returns: (transfer none) (array length=length): Writable blob data, + * or `NULL` if failed. + * + * Since: 0.9.2 + **/ +char * +hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length) +{ + if (hb_object_is_immutable (blob) || + !blob->try_make_writable ()) + { + if (length) *length = 0; + return nullptr; + } + + if (length) *length = blob->length; + return const_cast (blob->data); +} + + +bool +hb_blob_t::try_make_writable_inplace_unix () +{ +#if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT) + uintptr_t pagesize = -1, mask, length; + const char *addr; + +#if defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE) + pagesize = (uintptr_t) sysconf (_SC_PAGE_SIZE); +#elif defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE) + pagesize = (uintptr_t) sysconf (_SC_PAGESIZE); +#elif defined(HAVE_GETPAGESIZE) + pagesize = (uintptr_t) getpagesize (); +#endif + + if ((uintptr_t) -1L == pagesize) { + DEBUG_MSG_FUNC (BLOB, this, "failed to get pagesize: %s", strerror (errno)); + return false; + } + DEBUG_MSG_FUNC (BLOB, this, "pagesize is %lu", (unsigned long) pagesize); + + mask = ~(pagesize-1); + addr = (const char *) (((uintptr_t) this->data) & mask); + length = (const char *) (((uintptr_t) this->data + this->length + pagesize-1) & mask) - addr; + DEBUG_MSG_FUNC (BLOB, this, + "calling mprotect on [%p..%p] (%lu bytes)", + addr, addr+length, (unsigned long) length); + if (-1 == mprotect ((void *) addr, length, PROT_READ | PROT_WRITE)) { + DEBUG_MSG_FUNC (BLOB, this, "mprotect failed: %s", strerror (errno)); + return false; + } + + this->mode = HB_MEMORY_MODE_WRITABLE; + + DEBUG_MSG_FUNC (BLOB, this, + "successfully made [%p..%p] (%lu bytes) writable\n", + addr, addr+length, (unsigned long) length); + return true; +#else + return false; +#endif +} + +bool +hb_blob_t::try_make_writable_inplace () +{ + DEBUG_MSG_FUNC (BLOB, this, "making writable inplace\n"); + + if (this->try_make_writable_inplace_unix ()) + return true; + + DEBUG_MSG_FUNC (BLOB, this, "making writable -> FAILED\n"); + + /* Failed to make writable inplace, mark that */ + this->mode = HB_MEMORY_MODE_READONLY; + return false; +} + +bool +hb_blob_t::try_make_writable () +{ + if (unlikely (!length)) + mode = HB_MEMORY_MODE_WRITABLE; + + if (this->mode == HB_MEMORY_MODE_WRITABLE) + return true; + + if (this->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && this->try_make_writable_inplace ()) + return true; + + if (this->mode == HB_MEMORY_MODE_WRITABLE) + return true; + + + DEBUG_MSG_FUNC (BLOB, this, "current data is -> %p\n", this->data); + + char *new_data; + + new_data = (char *) hb_malloc (this->length); + if (unlikely (!new_data)) + return false; + + DEBUG_MSG_FUNC (BLOB, this, "dupped successfully -> %p\n", this->data); + + hb_memcpy (new_data, this->data, this->length); + this->destroy_user_data (); + this->mode = HB_MEMORY_MODE_WRITABLE; + this->data = new_data; + this->user_data = new_data; + this->destroy = hb_free; + + return true; +} + +/* + * Mmap + */ + +#ifndef HB_NO_OPEN +#ifdef HAVE_MMAP +# if !defined(HB_NO_RESOURCE_FORK) && defined(__APPLE__) +# include +# endif +# include +# include +# include +#endif + +#ifdef _WIN32 +# include +#else +# ifndef O_BINARY +# define O_BINARY 0 +# endif +#endif + +#ifndef MAP_NORESERVE +# define MAP_NORESERVE 0 +#endif + +struct hb_mapped_file_t +{ + char *contents; + unsigned long length; +#ifdef _WIN32 + HANDLE mapping; +#endif +}; + +#if (defined(HAVE_MMAP) || defined(_WIN32)) && !defined(HB_NO_MMAP) +static void +_hb_mapped_file_destroy (void *file_) +{ + hb_mapped_file_t *file = (hb_mapped_file_t *) file_; +#ifdef HAVE_MMAP + munmap (file->contents, file->length); +#elif defined(_WIN32) + UnmapViewOfFile (file->contents); + CloseHandle (file->mapping); +#else + assert (0); // If we don't have mmap we shouldn't reach here +#endif + + hb_free (file); +} +#endif + +#ifdef _PATH_RSRCFORKSPEC +static int +_open_resource_fork (const char *file_name, hb_mapped_file_t *file) +{ + size_t name_len = strlen (file_name); + size_t len = name_len + sizeof (_PATH_RSRCFORKSPEC); + + char *rsrc_name = (char *) hb_malloc (len); + if (unlikely (!rsrc_name)) return -1; + + strncpy (rsrc_name, file_name, name_len); + strncpy (rsrc_name + name_len, _PATH_RSRCFORKSPEC, + sizeof (_PATH_RSRCFORKSPEC)); + + int fd = open (rsrc_name, O_RDONLY | O_BINARY, 0); + hb_free (rsrc_name); + + if (fd != -1) + { + struct stat st; + if (fstat (fd, &st) != -1) + file->length = (unsigned long) st.st_size; + else + { + close (fd); + fd = -1; + } + } + + return fd; +} +#endif + +/** + * hb_blob_create_from_file: + * @file_name: A font filename + * + * Creates a new blob containing the data from the + * specified binary font file. + * + * Returns: An #hb_blob_t pointer with the content of the file, + * or hb_blob_get_empty() if failed. + * + * Since: 1.7.7 + **/ +hb_blob_t * +hb_blob_create_from_file (const char *file_name) +{ + hb_blob_t *blob = hb_blob_create_from_file_or_fail (file_name); + return likely (blob) ? blob : hb_blob_get_empty (); +} + +/** + * hb_blob_create_from_file_or_fail: + * @file_name: A font filename + * + * Creates a new blob containing the data from the + * specified binary font file. + * + * Returns: An #hb_blob_t pointer with the content of the file, + * or `NULL` if failed. + * + * Since: 2.8.2 + **/ +hb_blob_t * +hb_blob_create_from_file_or_fail (const char *file_name) +{ + /* Adopted from glib's gmappedfile.c with Matthias Clasen and + Allison Lortie permission but changed a lot to suit our need. */ +#if defined(HAVE_MMAP) && !defined(HB_NO_MMAP) + hb_mapped_file_t *file = (hb_mapped_file_t *) hb_calloc (1, sizeof (hb_mapped_file_t)); + if (unlikely (!file)) return nullptr; + + int fd = open (file_name, O_RDONLY | O_BINARY, 0); + if (unlikely (fd == -1)) goto fail_without_close; + + struct stat st; + if (unlikely (fstat (fd, &st) == -1)) goto fail; + + file->length = (unsigned long) st.st_size; + +#ifdef _PATH_RSRCFORKSPEC + if (unlikely (file->length == 0)) + { + int rfd = _open_resource_fork (file_name, file); + if (rfd != -1) + { + close (fd); + fd = rfd; + } + } +#endif + + file->contents = (char *) mmap (nullptr, file->length, PROT_READ, + MAP_PRIVATE | MAP_NORESERVE, fd, 0); + + if (unlikely (file->contents == MAP_FAILED)) goto fail; + + close (fd); + + return hb_blob_create_or_fail (file->contents, file->length, + HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file, + (hb_destroy_func_t) _hb_mapped_file_destroy); + +fail: + close (fd); +fail_without_close: + hb_free (file); + +#elif defined(_WIN32) && !defined(HB_NO_MMAP) + hb_mapped_file_t *file = (hb_mapped_file_t *) hb_calloc (1, sizeof (hb_mapped_file_t)); + if (unlikely (!file)) return nullptr; + + HANDLE fd; + unsigned int size = strlen (file_name) + 1; + wchar_t * wchar_file_name = (wchar_t *) hb_malloc (sizeof (wchar_t) * size); + if (unlikely (!wchar_file_name)) goto fail_without_close; + mbstowcs (wchar_file_name, file_name, size); +#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) + { + CREATEFILE2_EXTENDED_PARAMETERS ceparams = { 0 }; + ceparams.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS); + ceparams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0xFFFF; + ceparams.dwFileFlags = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0xFFF00000; + ceparams.dwSecurityQosFlags = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0x000F0000; + ceparams.lpSecurityAttributes = nullptr; + ceparams.hTemplateFile = nullptr; + fd = CreateFile2 (wchar_file_name, GENERIC_READ, FILE_SHARE_READ, + OPEN_EXISTING, &ceparams); + } +#else + fd = CreateFileW (wchar_file_name, GENERIC_READ, FILE_SHARE_READ, nullptr, + OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED, + nullptr); +#endif + hb_free (wchar_file_name); + + if (unlikely (fd == INVALID_HANDLE_VALUE)) goto fail_without_close; + +#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) + { + LARGE_INTEGER length; + GetFileSizeEx (fd, &length); + file->length = length.LowPart; + file->mapping = CreateFileMappingFromApp (fd, nullptr, PAGE_READONLY, length.QuadPart, nullptr); + } +#else + file->length = (unsigned long) GetFileSize (fd, nullptr); + file->mapping = CreateFileMapping (fd, nullptr, PAGE_READONLY, 0, 0, nullptr); +#endif + if (unlikely (!file->mapping)) goto fail; + +#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) + file->contents = (char *) MapViewOfFileFromApp (file->mapping, FILE_MAP_READ, 0, 0); +#else + file->contents = (char *) MapViewOfFile (file->mapping, FILE_MAP_READ, 0, 0, 0); +#endif + if (unlikely (!file->contents)) goto fail; + + CloseHandle (fd); + return hb_blob_create_or_fail (file->contents, file->length, + HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file, + (hb_destroy_func_t) _hb_mapped_file_destroy); + +fail: + CloseHandle (fd); +fail_without_close: + hb_free (file); + +#endif + + /* The following tries to read a file without knowing its size beforehand + It's used as a fallback for systems without mmap or to read from pipes */ + unsigned long len = 0, allocated = BUFSIZ * 16; + char *data = (char *) hb_malloc (allocated); + if (unlikely (!data)) return nullptr; + + FILE *fp = fopen (file_name, "rb"); + if (unlikely (!fp)) goto fread_fail_without_close; + + while (!feof (fp)) + { + if (allocated - len < BUFSIZ) + { + allocated *= 2; + /* Don't allocate and go more than ~536MB, our mmap reader still + can cover files like that but lets limit our fallback reader */ + if (unlikely (allocated > (2 << 28))) goto fread_fail; + char *new_data = (char *) hb_realloc (data, allocated); + if (unlikely (!new_data)) goto fread_fail; + data = new_data; + } + + unsigned long addition = fread (data + len, 1, allocated - len, fp); + + int err = ferror (fp); +#ifdef EINTR // armcc doesn't have it + if (unlikely (err == EINTR)) continue; +#endif + if (unlikely (err)) goto fread_fail; + + len += addition; + } + fclose (fp); + + return hb_blob_create_or_fail (data, len, HB_MEMORY_MODE_WRITABLE, data, + (hb_destroy_func_t) hb_free); + +fread_fail: + fclose (fp); +fread_fail_without_close: + hb_free (data); + return nullptr; +} +#endif /* !HB_NO_OPEN */ diff --git a/gfx/harfbuzz/src/hb-blob.h b/gfx/harfbuzz/src/hb-blob.h new file mode 100644 index 0000000000..db50067e16 --- /dev/null +++ b/gfx/harfbuzz/src/hb-blob.h @@ -0,0 +1,160 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_BLOB_H +#define HB_BLOB_H + +#include "hb-common.h" + +HB_BEGIN_DECLS + + +/** + * hb_memory_mode_t: + * @HB_MEMORY_MODE_DUPLICATE: HarfBuzz immediately makes a copy of the data. + * @HB_MEMORY_MODE_READONLY: HarfBuzz client will never modify the data, + * and HarfBuzz will never modify the data. + * @HB_MEMORY_MODE_WRITABLE: HarfBuzz client made a copy of the data solely + * for HarfBuzz, so HarfBuzz may modify the data. + * @HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE: See above + * + * Data type holding the memory modes available to + * client programs. + * + * Regarding these various memory-modes: + * + * - In no case shall the HarfBuzz client modify memory + * that is passed to HarfBuzz in a blob. If there is + * any such possibility, @HB_MEMORY_MODE_DUPLICATE should be used + * such that HarfBuzz makes a copy immediately, + * + * - Use @HB_MEMORY_MODE_READONLY otherwise, unless you really really + * really know what you are doing, + * + * - @HB_MEMORY_MODE_WRITABLE is appropriate if you really made a + * copy of data solely for the purpose of passing to + * HarfBuzz and doing that just once (no reuse!), + * + * - If the font is mmap()ed, it's okay to use + * @HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, however, using that mode + * correctly is very tricky. Use @HB_MEMORY_MODE_READONLY instead. + **/ +typedef enum { + HB_MEMORY_MODE_DUPLICATE, + HB_MEMORY_MODE_READONLY, + HB_MEMORY_MODE_WRITABLE, + HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE +} hb_memory_mode_t; + +/** + * hb_blob_t: + * + * Data type for blobs. A blob wraps a chunk of binary + * data and facilitates its lifecycle management between + * a client program and HarfBuzz. + * + **/ +typedef struct hb_blob_t hb_blob_t; + +HB_EXTERN hb_blob_t * +hb_blob_create (const char *data, + unsigned int length, + hb_memory_mode_t mode, + void *user_data, + hb_destroy_func_t destroy); + +HB_EXTERN hb_blob_t * +hb_blob_create_or_fail (const char *data, + unsigned int length, + hb_memory_mode_t mode, + void *user_data, + hb_destroy_func_t destroy); + +HB_EXTERN hb_blob_t * +hb_blob_create_from_file (const char *file_name); + +HB_EXTERN hb_blob_t * +hb_blob_create_from_file_or_fail (const char *file_name); + +/* Always creates with MEMORY_MODE_READONLY. + * Even if the parent blob is writable, we don't + * want the user of the sub-blob to be able to + * modify the parent data as that data may be + * shared among multiple sub-blobs. + */ +HB_EXTERN hb_blob_t * +hb_blob_create_sub_blob (hb_blob_t *parent, + unsigned int offset, + unsigned int length); + +HB_EXTERN hb_blob_t * +hb_blob_copy_writable_or_fail (hb_blob_t *blob); + +HB_EXTERN hb_blob_t * +hb_blob_get_empty (void); + +HB_EXTERN hb_blob_t * +hb_blob_reference (hb_blob_t *blob); + +HB_EXTERN void +hb_blob_destroy (hb_blob_t *blob); + +HB_EXTERN hb_bool_t +hb_blob_set_user_data (hb_blob_t *blob, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + + +HB_EXTERN void * +hb_blob_get_user_data (const hb_blob_t *blob, + hb_user_data_key_t *key); + + +HB_EXTERN void +hb_blob_make_immutable (hb_blob_t *blob); + +HB_EXTERN hb_bool_t +hb_blob_is_immutable (hb_blob_t *blob); + + +HB_EXTERN unsigned int +hb_blob_get_length (hb_blob_t *blob); + +HB_EXTERN const char * +hb_blob_get_data (hb_blob_t *blob, unsigned int *length); + +HB_EXTERN char * +hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length); + +HB_END_DECLS + +#endif /* HB_BLOB_H */ diff --git a/gfx/harfbuzz/src/hb-blob.hh b/gfx/harfbuzz/src/hb-blob.hh new file mode 100644 index 0000000000..b1b3b94d3d --- /dev/null +++ b/gfx/harfbuzz/src/hb-blob.hh @@ -0,0 +1,98 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BLOB_HH +#define HB_BLOB_HH + +#include "hb.hh" + + +/* + * hb_blob_t + */ + +struct hb_blob_t +{ + ~hb_blob_t () { destroy_user_data (); } + + void destroy_user_data () + { + if (destroy) + { + destroy (user_data); + user_data = nullptr; + destroy = nullptr; + } + } + + HB_INTERNAL bool try_make_writable (); + HB_INTERNAL bool try_make_writable_inplace (); + HB_INTERNAL bool try_make_writable_inplace_unix (); + + hb_bytes_t as_bytes () const { return hb_bytes_t (data, length); } + template + const Type* as () const { return as_bytes ().as (); } + + public: + hb_object_header_t header; + + const char *data = nullptr; + unsigned int length = 0; + hb_memory_mode_t mode = (hb_memory_mode_t) 0; + + void *user_data = nullptr; + hb_destroy_func_t destroy = nullptr; +}; + + +/* + * hb_blob_ptr_t + */ + +template +struct hb_blob_ptr_t +{ + typedef hb_remove_pointer

T; + + hb_blob_ptr_t (hb_blob_t *b_ = nullptr) : b (b_) {} + hb_blob_t * operator = (hb_blob_t *b_) { return b = b_; } + const T * operator -> () const { return get (); } + const T & operator * () const { return *get (); } + template operator const C * () const { return get (); } + operator const char * () const { return (const char *) get (); } + const T * get () const { return b->as (); } + hb_blob_t * get_blob () const { return b.get_raw (); } + unsigned int get_length () const { return b.get ()->length; } + void destroy () { hb_blob_destroy (b.get_raw ()); b = nullptr; } + + private: + hb_nonnull_ptr_t b; +}; + + +#endif /* HB_BLOB_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-json.hh b/gfx/harfbuzz/src/hb-buffer-deserialize-json.hh new file mode 100644 index 0000000000..004a9fb8b7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-json.hh @@ -0,0 +1,795 @@ + +#line 1 "hb-buffer-deserialize-json.rl" +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_JSON_HH +#define HB_BUFFER_DESERIALIZE_JSON_HH + +#include "hb.hh" + + +#line 33 "hb-buffer-deserialize-json.hh" +static const unsigned char _deserialize_json_trans_keys[] = { + 0u, 0u, 9u, 123u, 9u, 34u, 97u, 117u, 120u, 121u, 34u, 34u, 9u, 58u, 9u, 57u, + 48u, 57u, 9u, 125u, 9u, 125u, 9u, 93u, 9u, 125u, 34u, 34u, 9u, 58u, 9u, 57u, + 48u, 57u, 9u, 125u, 9u, 125u, 108u, 108u, 34u, 34u, 9u, 58u, 9u, 57u, 9u, 125u, + 9u, 125u, 120u, 121u, 34u, 34u, 9u, 58u, 9u, 57u, 48u, 57u, 9u, 125u, 9u, 125u, + 34u, 34u, 9u, 58u, 9u, 57u, 48u, 57u, 9u, 125u, 9u, 125u, 108u, 108u, 34u, 34u, + 9u, 58u, 9u, 57u, 9u, 125u, 9u, 125u, 34u, 34u, 9u, 58u, 9u, 57u, 34u, 92u, + 9u, 125u, 34u, 92u, 9u, 125u, 9u, 125u, 34u, 34u, 9u, 58u, 9u, 57u, 9u, 125u, + 9u, 123u, 0u, 0u, 0 +}; + +static const char _deserialize_json_key_spans[] = { + 0, 115, 26, 21, 2, 1, 50, 49, + 10, 117, 117, 85, 117, 1, 50, 49, + 10, 117, 117, 1, 1, 50, 49, 117, + 117, 2, 1, 50, 49, 10, 117, 117, + 1, 50, 49, 10, 117, 117, 1, 1, + 50, 49, 117, 117, 1, 50, 49, 59, + 117, 59, 117, 117, 1, 50, 49, 117, + 115, 0 +}; + +static const short _deserialize_json_index_offsets[] = { + 0, 0, 116, 143, 165, 168, 170, 221, + 271, 282, 400, 518, 604, 722, 724, 775, + 825, 836, 954, 1072, 1074, 1076, 1127, 1177, + 1295, 1413, 1416, 1418, 1469, 1519, 1530, 1648, + 1766, 1768, 1819, 1869, 1880, 1998, 2116, 2118, + 2120, 2171, 2221, 2339, 2457, 2459, 2510, 2560, + 2620, 2738, 2798, 2916, 3034, 3036, 3087, 3137, + 3255, 3371 +}; + +static const char _deserialize_json_indicies[] = { + 0, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 0, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 2, 1, 3, 3, 3, + 3, 3, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 3, 1, 4, 1, + 5, 1, 6, 7, 1, 8, 9, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 10, 1, 11, 12, + 1, 13, 1, 13, 13, 13, 13, 13, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 13, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 14, 1, 14, 14, + 14, 14, 14, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 14, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 15, 1, 1, 16, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 1, + 18, 19, 19, 19, 19, 19, 19, 19, + 19, 19, 1, 20, 20, 20, 20, 20, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 20, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 21, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 22, + 1, 23, 23, 23, 23, 23, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 23, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 3, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 24, 1, 25, + 25, 25, 25, 25, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 25, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 26, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 27, 1, 20, 20, 20, + 20, 20, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 20, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 21, 1, 1, 1, 19, 19, 19, 19, + 19, 19, 19, 19, 19, 19, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 22, 1, 28, 1, 28, 28, 28, + 28, 28, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 28, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 29, 1, + 29, 29, 29, 29, 29, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 29, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 30, 1, 1, 31, + 32, 32, 32, 32, 32, 32, 32, 32, + 32, 1, 33, 34, 34, 34, 34, 34, + 34, 34, 34, 34, 1, 35, 35, 35, + 35, 35, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 35, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 36, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 37, 1, 35, 35, 35, 35, 35, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 35, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 36, 1, + 1, 1, 34, 34, 34, 34, 34, 34, + 34, 34, 34, 34, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 37, + 1, 38, 1, 39, 1, 39, 39, 39, + 39, 39, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 39, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 40, 1, + 40, 40, 40, 40, 40, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 40, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 41, + 42, 42, 42, 42, 42, 42, 42, 42, + 42, 1, 43, 43, 43, 43, 43, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 43, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 44, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 45, 1, + 43, 43, 43, 43, 43, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 43, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 44, 1, 1, 1, 46, + 46, 46, 46, 46, 46, 46, 46, 46, + 46, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 45, 1, 47, 48, + 1, 49, 1, 49, 49, 49, 49, 49, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 49, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 50, 1, 50, 50, + 50, 50, 50, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 50, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 51, 1, 1, 52, 53, 53, + 53, 53, 53, 53, 53, 53, 53, 1, + 54, 55, 55, 55, 55, 55, 55, 55, + 55, 55, 1, 56, 56, 56, 56, 56, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 56, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 57, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 58, + 1, 56, 56, 56, 56, 56, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 56, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 57, 1, 1, 1, + 55, 55, 55, 55, 55, 55, 55, 55, + 55, 55, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 58, 1, 59, + 1, 59, 59, 59, 59, 59, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 59, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 60, 1, 60, 60, 60, 60, + 60, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 60, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 61, 1, 1, 62, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 1, 64, 65, + 65, 65, 65, 65, 65, 65, 65, 65, + 1, 66, 66, 66, 66, 66, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 66, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 67, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 68, 1, 66, + 66, 66, 66, 66, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 66, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 67, 1, 1, 1, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 68, 1, 69, 1, 70, + 1, 70, 70, 70, 70, 70, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 70, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 71, 1, 71, 71, 71, 71, + 71, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 71, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 72, 73, 73, 73, 73, + 73, 73, 73, 73, 73, 1, 74, 74, + 74, 74, 74, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 74, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 75, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 76, 1, 74, 74, 74, 74, + 74, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 74, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 75, + 1, 1, 1, 77, 77, 77, 77, 77, + 77, 77, 77, 77, 77, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 76, 1, 78, 1, 78, 78, 78, 78, + 78, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 78, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 79, 1, 79, + 79, 79, 79, 79, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 79, 1, + 80, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 81, 82, + 82, 82, 82, 82, 82, 82, 82, 82, + 1, 84, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 83, 83, 83, 83, 83, + 83, 83, 83, 85, 83, 86, 86, 86, + 86, 86, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 86, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 87, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 88, 1, 83, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 83, 1, 89, + 89, 89, 89, 89, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 89, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 90, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 91, 1, 89, 89, 89, + 89, 89, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 89, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 90, 1, 1, 1, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 91, 1, 93, 1, 93, 93, 93, + 93, 93, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 93, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 94, 1, + 94, 94, 94, 94, 94, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 94, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 95, + 96, 96, 96, 96, 96, 96, 96, 96, + 96, 1, 89, 89, 89, 89, 89, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 89, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 90, 1, 1, + 1, 97, 97, 97, 97, 97, 97, 97, + 97, 97, 97, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 91, 1, + 0, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 0, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 2, 1, 1, 0 +}; + +static const char _deserialize_json_trans_targs[] = { + 1, 0, 2, 2, 3, 4, 19, 25, + 38, 44, 52, 5, 13, 6, 7, 8, + 9, 12, 9, 12, 10, 2, 11, 10, + 11, 11, 56, 57, 14, 15, 16, 17, + 18, 17, 18, 10, 2, 11, 20, 21, + 22, 23, 24, 10, 2, 11, 24, 26, + 32, 27, 28, 29, 30, 31, 30, 31, + 10, 2, 11, 33, 34, 35, 36, 37, + 36, 37, 10, 2, 11, 39, 40, 41, + 42, 43, 10, 2, 11, 43, 45, 46, + 47, 50, 51, 47, 48, 49, 10, 2, + 11, 10, 2, 11, 51, 53, 54, 50, + 55, 55 +}; + +static const char _deserialize_json_trans_actions[] = { + 0, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 2, + 2, 2, 0, 0, 3, 3, 4, 0, + 5, 0, 0, 0, 0, 0, 2, 2, + 2, 0, 0, 6, 6, 7, 0, 0, + 0, 2, 2, 8, 8, 9, 0, 0, + 0, 0, 0, 2, 2, 2, 0, 0, + 10, 10, 11, 0, 0, 2, 2, 2, + 0, 0, 12, 12, 13, 0, 0, 0, + 2, 2, 14, 14, 15, 0, 0, 0, + 2, 16, 16, 0, 17, 0, 18, 18, + 19, 20, 20, 21, 17, 0, 0, 22, + 22, 23 +}; + +static const int deserialize_json_start = 1; +static const int deserialize_json_first_final = 56; +static const int deserialize_json_error = 0; + +static const int deserialize_json_en_main = 1; + + +#line 111 "hb-buffer-deserialize-json.rl" + + +static hb_bool_t +_hb_buffer_deserialize_json (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len; + + /* Ensure we have positions. */ + (void) hb_buffer_get_glyph_positions (buffer, nullptr); + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? ',' : '[')) + *end_ptr = ++p; + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + hb_glyph_position_t pos = {0}; + +#line 552 "hb-buffer-deserialize-json.hh" + { + cs = deserialize_json_start; + } + +#line 555 "hb-buffer-deserialize-json.hh" + { + int _slen; + int _trans; + const unsigned char *_keys; + const char *_inds; + if ( p == pe ) + goto _test_eof; + if ( cs == 0 ) + goto _out; +_resume: + _keys = _deserialize_json_trans_keys + (cs<<1); + _inds = _deserialize_json_indicies + _deserialize_json_index_offsets[cs]; + + _slen = _deserialize_json_key_spans[cs]; + _trans = _inds[ _slen > 0 && _keys[0] <=(*p) && + (*p) <= _keys[1] ? + (*p) - _keys[0] : _slen ]; + + cs = _deserialize_json_trans_targs[_trans]; + + if ( _deserialize_json_trans_actions[_trans] == 0 ) + goto _again; + + switch ( _deserialize_json_trans_actions[_trans] ) { + case 1: +#line 38 "hb-buffer-deserialize-json.rl" + { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} + break; + case 5: +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 2: +#line 51 "hb-buffer-deserialize-json.rl" + { + tok = p; +} + break; + case 17: +#line 55 "hb-buffer-deserialize-json.rl" + { if (unlikely (!buffer->ensure_glyphs ())) return false; } + break; + case 23: +#line 56 "hb-buffer-deserialize-json.rl" + { if (unlikely (!buffer->ensure_unicode ())) return false; } + break; + case 18: +#line 58 "hb-buffer-deserialize-json.rl" + { + /* TODO Unescape \" and \\ if found. */ + if (!hb_font_glyph_from_string (font, + tok+1, p - tok - 2, /* Skip "" */ + &info.codepoint)) + return false; +} + break; + case 20: +#line 66 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.codepoint)) return false; } + break; + case 8: +#line 67 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } + break; + case 10: +#line 68 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.x_offset )) return false; } + break; + case 12: +#line 69 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.y_offset )) return false; } + break; + case 3: +#line 70 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.x_advance)) return false; } + break; + case 6: +#line 71 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.y_advance)) return false; } + break; + case 14: +#line 72 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.mask )) return false; } + break; + case 16: +#line 51 "hb-buffer-deserialize-json.rl" + { + tok = p; +} +#line 55 "hb-buffer-deserialize-json.rl" + { if (unlikely (!buffer->ensure_glyphs ())) return false; } + break; + case 22: +#line 51 "hb-buffer-deserialize-json.rl" + { + tok = p; +} +#line 56 "hb-buffer-deserialize-json.rl" + { if (unlikely (!buffer->ensure_unicode ())) return false; } + break; + case 19: +#line 58 "hb-buffer-deserialize-json.rl" + { + /* TODO Unescape \" and \\ if found. */ + if (!hb_font_glyph_from_string (font, + tok+1, p - tok - 2, /* Skip "" */ + &info.codepoint)) + return false; +} +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 21: +#line 66 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.codepoint)) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 9: +#line 67 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 11: +#line 68 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.x_offset )) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 13: +#line 69 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.y_offset )) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 4: +#line 70 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.x_advance)) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 7: +#line 71 "hb-buffer-deserialize-json.rl" + { if (!parse_int (tok, p, &pos.y_advance)) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 15: +#line 72 "hb-buffer-deserialize-json.rl" + { if (!parse_uint (tok, p, &info.mask )) return false; } +#line 43 "hb-buffer-deserialize-json.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; +#line 733 "hb-buffer-deserialize-json.hh" + } + +_again: + if ( cs == 0 ) + goto _out; + if ( ++p != pe ) + goto _resume; + _test_eof: {} + _out: {} + } + +#line 137 "hb-buffer-deserialize-json.rl" + + + *end_ptr = p; + + return p == pe && *(p-1) != ']'; +} + +#endif /* HB_BUFFER_DESERIALIZE_JSON_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl b/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl new file mode 100644 index 0000000000..b12dd0f1a1 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl @@ -0,0 +1,144 @@ +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_JSON_HH +#define HB_BUFFER_DESERIALIZE_JSON_HH + +#include "hb.hh" + +%%{ + +machine deserialize_json; +alphtype unsigned char; +write data; + +action clear_item { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} + +action add_item { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + +action tok { + tok = p; +} + +action ensure_glyphs { if (unlikely (!buffer->ensure_glyphs ())) return false; } +action ensure_unicode { if (unlikely (!buffer->ensure_unicode ())) return false; } + +action parse_glyph_name { + /* TODO Unescape \" and \\ if found. */ + if (!hb_font_glyph_from_string (font, + tok+1, p - tok - 2, /* Skip "" */ + &info.codepoint)) + return false; +} + +action parse_codepoint { if (!parse_uint (tok, p, &info.codepoint)) return false; } +action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; } +action parse_x_offset { if (!parse_int (tok, p, &pos.x_offset )) return false; } +action parse_y_offset { if (!parse_int (tok, p, &pos.y_offset )) return false; } +action parse_x_advance { if (!parse_int (tok, p, &pos.x_advance)) return false; } +action parse_y_advance { if (!parse_int (tok, p, &pos.y_advance)) return false; } +action parse_glyph_flags{ if (!parse_uint (tok, p, &info.mask )) return false; } + +unum = '0' | [1-9] digit*; +num = '-'? unum; + +comma = space* ',' space*; +colon = space* ':' space*; + +codepoint = unum; +glyph_name = '"' ([^\\"] | '\\' [\\"])* '"'; + +parse_glyph_name = (glyph_name >tok %parse_glyph_name); +parse_codepoint = (codepoint >tok %parse_codepoint); + +glyph = "\"g\"" colon (parse_glyph_name | parse_codepoint); +unicode = "\"u\"" colon parse_codepoint; +cluster = "\"cl\"" colon (unum >tok %parse_cluster); +xoffset = "\"dx\"" colon (num >tok %parse_x_offset); +yoffset = "\"dy\"" colon (num >tok %parse_y_offset); +xadvance= "\"ax\"" colon (num >tok %parse_x_advance); +yadvance= "\"ay\"" colon (num >tok %parse_y_advance); +glyphflags="\"fl\"" colon (unum >tok %parse_glyph_flags); + +element = glyph @ensure_glyphs + | unicode @ensure_unicode + | cluster + | xoffset + | yoffset + | xadvance + | yadvance + | glyphflags; +item = + ( '{' space* element (comma element)* space* '}') + >clear_item + @add_item + ; + +main := space* item (comma item)* space* (','|']'); + +}%% + +static hb_bool_t +_hb_buffer_deserialize_json (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len; + + /* Ensure we have positions. */ + (void) hb_buffer_get_glyph_positions (buffer, nullptr); + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? ',' : '[')) + *end_ptr = ++p; + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + hb_glyph_position_t pos = {0}; + %%{ + write init; + write exec; + }%% + + *end_ptr = p; + + return p == pe && *(p-1) != ']'; +} + +#endif /* HB_BUFFER_DESERIALIZE_JSON_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.hh b/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.hh new file mode 100644 index 0000000000..5fe75659b4 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.hh @@ -0,0 +1,692 @@ + +#line 1 "hb-buffer-deserialize-text-glyphs.rl" +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH +#define HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH + +#include "hb.hh" + + +#line 33 "hb-buffer-deserialize-text-glyphs.hh" +static const unsigned char _deserialize_text_glyphs_trans_keys[] = { + 0u, 0u, 48u, 57u, 45u, 57u, 48u, 57u, 45u, 57u, 48u, 57u, 48u, 57u, 45u, 57u, + 48u, 57u, 44u, 44u, 45u, 57u, 48u, 57u, 44u, 57u, 43u, 124u, 9u, 124u, 9u, 124u, + 9u, 124u, 9u, 124u, 9u, 124u, 9u, 124u, 9u, 124u, 9u, 124u, 9u, 124u, 9u, 124u, + 9u, 124u, 9u, 124u, 9u, 124u, 0 +}; + +static const char _deserialize_text_glyphs_key_spans[] = { + 0, 10, 13, 10, 13, 10, 10, 13, + 10, 1, 13, 10, 14, 82, 116, 116, + 116, 116, 116, 116, 116, 116, 116, 116, + 116, 116, 116 +}; + +static const short _deserialize_text_glyphs_index_offsets[] = { + 0, 0, 11, 25, 36, 50, 61, 72, + 86, 97, 99, 113, 124, 139, 222, 339, + 456, 573, 690, 807, 924, 1041, 1158, 1275, + 1392, 1509, 1626 +}; + +static const char _deserialize_text_glyphs_indicies[] = { + 0, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 1, 3, 1, 1, 4, + 5, 5, 5, 5, 5, 5, 5, 5, + 5, 1, 6, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 1, 8, 1, 1, + 9, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 1, 11, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 1, 13, 14, + 14, 14, 14, 14, 14, 14, 14, 14, + 1, 15, 1, 1, 16, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 1, 18, + 19, 19, 19, 19, 19, 19, 19, 19, + 19, 1, 20, 1, 21, 1, 1, 22, + 23, 23, 23, 23, 23, 23, 23, 23, + 23, 1, 24, 25, 25, 25, 25, 25, + 25, 25, 25, 25, 1, 20, 1, 1, + 1, 19, 19, 19, 19, 19, 19, 19, + 19, 19, 19, 1, 26, 26, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 26, 1, + 1, 26, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 26, 26, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 26, 1, 28, + 28, 28, 28, 28, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 28, 27, + 27, 29, 27, 27, 27, 27, 27, 27, + 27, 30, 1, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 31, 27, 27, 32, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 33, 1, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 28, 27, 34, 34, 34, 34, + 34, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 34, 26, 26, 35, 26, + 26, 26, 26, 26, 26, 26, 36, 1, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 37, 26, 26, 38, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 39, + 1, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 40, + 26, 41, 41, 41, 41, 41, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 41, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 42, 1, 43, 43, + 43, 43, 43, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 43, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 44, 1, 41, 41, 41, 41, 41, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 41, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 42, 1, + 46, 46, 46, 46, 46, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 46, + 1, 1, 47, 1, 1, 1, 1, 1, + 1, 1, 1, 48, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 49, 1, 50, 50, 50, + 50, 50, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 50, 1, 1, 51, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 52, 1, 50, 50, 50, 50, 50, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 50, 1, 1, 51, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 12, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 52, 1, 46, + 46, 46, 46, 46, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 46, 1, + 1, 47, 1, 1, 1, 1, 1, 1, + 1, 1, 48, 1, 1, 1, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 49, 1, 53, 53, 53, 53, + 53, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 53, 1, 1, 54, 1, + 1, 1, 1, 1, 1, 1, 55, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 56, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 57, + 1, 58, 58, 58, 58, 58, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 58, 1, 1, 59, 1, 1, 1, 1, + 1, 1, 1, 60, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 61, 1, 58, 58, + 58, 58, 58, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 58, 1, 1, + 59, 1, 1, 1, 1, 1, 1, 1, + 60, 1, 1, 1, 1, 25, 25, 25, + 25, 25, 25, 25, 25, 25, 25, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 61, 1, 53, 53, 53, 53, 53, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 53, 1, 1, 54, 1, 1, + 1, 1, 1, 1, 1, 55, 1, 1, + 1, 1, 62, 62, 62, 62, 62, 62, + 62, 62, 62, 62, 1, 1, 1, 1, + 1, 1, 56, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 57, 1, + 0 +}; + +static const char _deserialize_text_glyphs_trans_targs[] = { + 16, 0, 18, 3, 19, 22, 19, 22, + 5, 20, 21, 20, 21, 23, 26, 8, + 9, 12, 9, 12, 10, 11, 24, 25, + 24, 25, 15, 15, 14, 1, 2, 6, + 7, 13, 15, 1, 2, 6, 7, 13, + 14, 17, 14, 17, 14, 18, 17, 1, + 4, 14, 17, 1, 14, 17, 1, 2, + 7, 14, 17, 1, 2, 14, 26 +}; + +static const char _deserialize_text_glyphs_trans_actions[] = { + 1, 0, 1, 1, 1, 1, 0, 0, + 1, 1, 1, 0, 0, 1, 1, 1, + 1, 1, 0, 0, 2, 1, 1, 1, + 0, 0, 0, 4, 3, 5, 5, 5, + 5, 4, 6, 7, 7, 7, 7, 0, + 6, 8, 8, 0, 0, 0, 9, 10, + 10, 9, 11, 12, 11, 13, 14, 14, + 14, 13, 15, 16, 16, 15, 0 +}; + +static const char _deserialize_text_glyphs_eof_actions[] = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 3, 6, + 8, 0, 8, 9, 11, 11, 9, 13, + 15, 15, 13 +}; + +static const int deserialize_text_glyphs_start = 14; +static const int deserialize_text_glyphs_first_final = 14; +static const int deserialize_text_glyphs_error = 0; + +static const int deserialize_text_glyphs_en_main = 14; + + +#line 98 "hb-buffer-deserialize-text-glyphs.rl" + + +static hb_bool_t +_hb_buffer_deserialize_text_glyphs (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len, *eof = pe, *orig_pe = pe; + + /* Ensure we have positions. */ + (void) hb_buffer_get_glyph_positions (buffer, nullptr); + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? '|' : '[')) + *end_ptr = ++p; + + const char *end = strchr ((char *) p, ']'); + if (end) + pe = eof = end; + else + { + end = strrchr ((char *) p, '|'); + if (end) + pe = eof = end; + else + pe = eof = p; + } + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + hb_glyph_position_t pos = {0}; + +#line 346 "hb-buffer-deserialize-text-glyphs.hh" + { + cs = deserialize_text_glyphs_start; + } + +#line 349 "hb-buffer-deserialize-text-glyphs.hh" + { + int _slen; + int _trans; + const unsigned char *_keys; + const char *_inds; + if ( p == pe ) + goto _test_eof; + if ( cs == 0 ) + goto _out; +_resume: + _keys = _deserialize_text_glyphs_trans_keys + (cs<<1); + _inds = _deserialize_text_glyphs_indicies + _deserialize_text_glyphs_index_offsets[cs]; + + _slen = _deserialize_text_glyphs_key_spans[cs]; + _trans = _inds[ _slen > 0 && _keys[0] <=(*p) && + (*p) <= _keys[1] ? + (*p) - _keys[0] : _slen ]; + + cs = _deserialize_text_glyphs_trans_targs[_trans]; + + if ( _deserialize_text_glyphs_trans_actions[_trans] == 0 ) + goto _again; + + switch ( _deserialize_text_glyphs_trans_actions[_trans] ) { + case 1: +#line 51 "hb-buffer-deserialize-text-glyphs.rl" + { + tok = p; +} + break; + case 7: +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} + break; + case 14: +#line 63 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } + break; + case 2: +#line 64 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.x_offset )) return false; } + break; + case 16: +#line 65 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_offset )) return false; } + break; + case 10: +#line 66 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.x_advance)) return false; } + break; + case 12: +#line 67 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_advance)) return false; } + break; + case 4: +#line 38 "hb-buffer-deserialize-text-glyphs.rl" + { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} +#line 51 "hb-buffer-deserialize-text-glyphs.rl" + { + tok = p; +} + break; + case 6: +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 13: +#line 63 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 15: +#line 65 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_offset )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 9: +#line 66 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.x_advance)) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 11: +#line 67 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_advance)) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 8: +#line 68 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_uint (tok, p, &info.mask )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 5: +#line 38 "hb-buffer-deserialize-text-glyphs.rl" + { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} +#line 51 "hb-buffer-deserialize-text-glyphs.rl" + { + tok = p; +} +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} + break; + case 3: +#line 38 "hb-buffer-deserialize-text-glyphs.rl" + { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} +#line 51 "hb-buffer-deserialize-text-glyphs.rl" + { + tok = p; +} +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; +#line 516 "hb-buffer-deserialize-text-glyphs.hh" + } + +_again: + if ( cs == 0 ) + goto _out; + if ( ++p != pe ) + goto _resume; + _test_eof: {} + if ( p == eof ) + { + switch ( _deserialize_text_glyphs_eof_actions[cs] ) { + case 6: +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 13: +#line 63 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 15: +#line 65 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_offset )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 9: +#line 66 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.x_advance)) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 11: +#line 67 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_int (tok, p, &pos.y_advance)) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 8: +#line 68 "hb-buffer-deserialize-text-glyphs.rl" + { if (!parse_uint (tok, p, &info.mask )) return false; } +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 3: +#line 38 "hb-buffer-deserialize-text-glyphs.rl" + { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} +#line 51 "hb-buffer-deserialize-text-glyphs.rl" + { + tok = p; +} +#line 55 "hb-buffer-deserialize-text-glyphs.rl" + { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} +#line 43 "hb-buffer-deserialize-text-glyphs.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; +#line 616 "hb-buffer-deserialize-text-glyphs.hh" + } + } + + _out: {} + } + +#line 136 "hb-buffer-deserialize-text-glyphs.rl" + + + if (pe < orig_pe && *pe == ']') + { + pe++; + if (p == pe) + p++; + } + + *end_ptr = p; + + return p == pe; +} + +#endif /* HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.rl b/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.rl new file mode 100644 index 0000000000..21db14b568 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-text-glyphs.rl @@ -0,0 +1,150 @@ +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH +#define HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH + +#include "hb.hh" + +%%{ + +machine deserialize_text_glyphs; +alphtype unsigned char; +write data; + +action clear_item { + hb_memset (&info, 0, sizeof (info)); + hb_memset (&pos , 0, sizeof (pos )); +} + +action add_item { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + +action tok { + tok = p; +} + +action parse_glyph { + /* TODO Unescape delimiters. */ + if (!hb_font_glyph_from_string (font, + tok, p - tok, + &info.codepoint)) + return false; +} + +action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; } +action parse_x_offset { if (!parse_int (tok, p, &pos.x_offset )) return false; } +action parse_y_offset { if (!parse_int (tok, p, &pos.y_offset )) return false; } +action parse_x_advance { if (!parse_int (tok, p, &pos.x_advance)) return false; } +action parse_y_advance { if (!parse_int (tok, p, &pos.y_advance)) return false; } +action parse_glyph_flags{ if (!parse_uint (tok, p, &info.mask )) return false; } + +unum = '0' | [1-9] digit*; +num = '-'? unum; + +glyph_id = unum; +glyph_name = ([^\\\]=@+,#|] | '\\' [\\\]=@+,|]) *; + +glyph = (glyph_id | glyph_name) >tok %parse_glyph; +cluster = '=' (unum >tok %parse_cluster); +offsets = '@' (num >tok %parse_x_offset) ',' (num >tok %parse_y_offset ); +advances= '+' (num >tok %parse_x_advance) (',' (num >tok %parse_y_advance))?; +glyphflags= '#' (unum >tok %parse_glyph_flags); + +glyph_item = + ( + glyph + cluster? + offsets? + advances? + glyphflags? + ) + >clear_item + %add_item + ; + +glyphs = glyph_item (space* '|' space* glyph_item)* space*; + +main := space* glyphs; + +}%% + +static hb_bool_t +_hb_buffer_deserialize_text_glyphs (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len, *eof = pe, *orig_pe = pe; + + /* Ensure we have positions. */ + (void) hb_buffer_get_glyph_positions (buffer, nullptr); + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? '|' : '[')) + *end_ptr = ++p; + + const char *end = strchr ((char *) p, ']'); + if (end) + pe = eof = end; + else + { + end = strrchr ((char *) p, '|'); + if (end) + pe = eof = end; + else + pe = eof = p; + } + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + hb_glyph_position_t pos = {0}; + %%{ + write init; + write exec; + }%% + + if (pe < orig_pe && *pe == ']') + { + pe++; + if (p == pe) + p++; + } + + *end_ptr = p; + + return p == pe; +} + +#endif /* HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.hh b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.hh new file mode 100644 index 0000000000..8ca73bf25f --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.hh @@ -0,0 +1,332 @@ + +#line 1 "hb-buffer-deserialize-text-unicode.rl" +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH +#define HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH + +#include "hb.hh" + + +#line 33 "hb-buffer-deserialize-text-unicode.hh" +static const unsigned char _deserialize_text_unicode_trans_keys[] = { + 0u, 0u, 9u, 117u, 43u, 102u, 48u, 102u, 48u, 57u, 9u, 124u, 9u, 124u, 9u, 124u, + 9u, 124u, 0 +}; + +static const char _deserialize_text_unicode_key_spans[] = { + 0, 109, 60, 55, 10, 116, 116, 116, + 116 +}; + +static const short _deserialize_text_unicode_index_offsets[] = { + 0, 0, 110, 171, 227, 238, 355, 472, + 589 +}; + +static const char _deserialize_text_unicode_indicies[] = { + 0, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 0, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 1, 3, + 1, 1, 1, 1, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 1, 1, + 1, 1, 1, 1, 1, 4, 4, 4, + 4, 4, 4, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 4, 4, 4, + 4, 4, 4, 1, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 1, 1, + 1, 1, 1, 1, 1, 4, 4, 4, + 4, 4, 4, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 4, 4, 4, + 4, 4, 4, 1, 5, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 1, 7, + 7, 7, 7, 7, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 7, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, + 1, 1, 1, 9, 1, 1, 1, 8, + 8, 8, 8, 8, 8, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 8, + 8, 8, 8, 8, 8, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 10, 1, 11, 11, 11, 11, + 11, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 11, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 0, + 1, 12, 12, 12, 12, 12, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 12, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 13, 1, 12, 12, + 12, 12, 12, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 12, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 13, 1, 0 +}; + +static const char _deserialize_text_unicode_trans_targs[] = { + 1, 0, 2, 3, 5, 7, 8, 6, + 5, 4, 1, 6, 6, 1, 8 +}; + +static const char _deserialize_text_unicode_trans_actions[] = { + 0, 0, 1, 0, 2, 2, 2, 3, + 0, 4, 3, 0, 5, 5, 0 +}; + +static const char _deserialize_text_unicode_eof_actions[] = { + 0, 0, 0, 0, 0, 3, 0, 5, + 5 +}; + +static const int deserialize_text_unicode_start = 1; +static const int deserialize_text_unicode_first_final = 5; +static const int deserialize_text_unicode_error = 0; + +static const int deserialize_text_unicode_en_main = 1; + + +#line 79 "hb-buffer-deserialize-text-unicode.rl" + + +static hb_bool_t +_hb_buffer_deserialize_text_unicode (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len, *eof = pe, *orig_pe = pe; + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? '|' : '<')) + *end_ptr = ++p; + + const char *end = strchr ((char *) p, '>'); + if (end) + pe = eof = end; + else + { + end = strrchr ((char *) p, '|'); + if (end) + pe = eof = end; + else + pe = eof = p; + } + + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + const hb_glyph_position_t pos = {0}; + +#line 194 "hb-buffer-deserialize-text-unicode.hh" + { + cs = deserialize_text_unicode_start; + } + +#line 197 "hb-buffer-deserialize-text-unicode.hh" + { + int _slen; + int _trans; + const unsigned char *_keys; + const char *_inds; + if ( p == pe ) + goto _test_eof; + if ( cs == 0 ) + goto _out; +_resume: + _keys = _deserialize_text_unicode_trans_keys + (cs<<1); + _inds = _deserialize_text_unicode_indicies + _deserialize_text_unicode_index_offsets[cs]; + + _slen = _deserialize_text_unicode_key_spans[cs]; + _trans = _inds[ _slen > 0 && _keys[0] <=(*p) && + (*p) <= _keys[1] ? + (*p) - _keys[0] : _slen ]; + + cs = _deserialize_text_unicode_trans_targs[_trans]; + + if ( _deserialize_text_unicode_trans_actions[_trans] == 0 ) + goto _again; + + switch ( _deserialize_text_unicode_trans_actions[_trans] ) { + case 1: +#line 38 "hb-buffer-deserialize-text-unicode.rl" + { + hb_memset (&info, 0, sizeof (info)); +} + break; + case 2: +#line 51 "hb-buffer-deserialize-text-unicode.rl" + { + tok = p; +} + break; + case 4: +#line 55 "hb-buffer-deserialize-text-unicode.rl" + {if (!parse_hex (tok, p, &info.codepoint )) return false; } + break; + case 3: +#line 55 "hb-buffer-deserialize-text-unicode.rl" + {if (!parse_hex (tok, p, &info.codepoint )) return false; } +#line 42 "hb-buffer-deserialize-text-unicode.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 5: +#line 57 "hb-buffer-deserialize-text-unicode.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } +#line 42 "hb-buffer-deserialize-text-unicode.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; +#line 256 "hb-buffer-deserialize-text-unicode.hh" + } + +_again: + if ( cs == 0 ) + goto _out; + if ( ++p != pe ) + goto _resume; + _test_eof: {} + if ( p == eof ) + { + switch ( _deserialize_text_unicode_eof_actions[cs] ) { + case 3: +#line 55 "hb-buffer-deserialize-text-unicode.rl" + {if (!parse_hex (tok, p, &info.codepoint )) return false; } +#line 42 "hb-buffer-deserialize-text-unicode.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; + case 5: +#line 57 "hb-buffer-deserialize-text-unicode.rl" + { if (!parse_uint (tok, p, &info.cluster )) return false; } +#line 42 "hb-buffer-deserialize-text-unicode.rl" + { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + break; +#line 289 "hb-buffer-deserialize-text-unicode.hh" + } + } + + _out: {} + } + +#line 115 "hb-buffer-deserialize-text-unicode.rl" + + + if (pe < orig_pe && *pe == '>') + { + pe++; + if (p == pe) + p++; + } + + *end_ptr = p; + + return p == pe; +} + +#endif /* HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl new file mode 100644 index 0000000000..92873b804f --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl @@ -0,0 +1,129 @@ +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH +#define HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH + +#include "hb.hh" + +%%{ + +machine deserialize_text_unicode; +alphtype unsigned char; +write data; + +action clear_item { + hb_memset (&info, 0, sizeof (info)); +} + +action add_item { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + +action tok { + tok = p; +} + +action parse_hexdigits {if (!parse_hex (tok, p, &info.codepoint )) return false; } + +action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; } + +unum = '0' | [1-9] digit*; +num = '-'? unum; + +cluster = '=' (unum >tok %parse_cluster); + +unicode = [Uu] '+'? xdigit+ >tok %parse_hexdigits; + +unicode_item = + ( + unicode + cluster? + ) + >clear_item + %add_item + ; + +unicodes = unicode_item (space* '|' space* unicode_item)* space*; + +main := space* unicodes; + +}%% + +static hb_bool_t +_hb_buffer_deserialize_text_unicode (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len, *eof = pe, *orig_pe = pe; + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? '|' : '<')) + *end_ptr = ++p; + + const char *end = strchr ((char *) p, '>'); + if (end) + pe = eof = end; + else + { + end = strrchr ((char *) p, '|'); + if (end) + pe = eof = end; + else + pe = eof = p; + } + + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + const hb_glyph_position_t pos = {0}; + %%{ + write init; + write exec; + }%% + + if (pe < orig_pe && *pe == '>') + { + pe++; + if (p == pe) + p++; + } + + *end_ptr = p; + + return p == pe; +} + +#endif /* HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH */ diff --git a/gfx/harfbuzz/src/hb-buffer-serialize.cc b/gfx/harfbuzz/src/hb-buffer-serialize.cc new file mode 100644 index 0000000000..16f189519b --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-serialize.cc @@ -0,0 +1,872 @@ +/* + * Copyright © 2012,2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifndef HB_NO_BUFFER_SERIALIZE + +#include "hb-buffer.hh" + + +static const char *_hb_buffer_serialize_formats[] = { + "text", + "json", + nullptr +}; + +/** + * hb_buffer_serialize_list_formats: + * + * Returns a list of supported buffer serialization formats. + * + * Return value: (transfer none): + * A string array of buffer serialization formats. Should not be freed. + * + * Since: 0.9.7 + **/ +const char ** +hb_buffer_serialize_list_formats () +{ + return _hb_buffer_serialize_formats; +} + +/** + * hb_buffer_serialize_format_from_string: + * @str: (array length=len) (element-type uint8_t): a string to parse + * @len: length of @str, or -1 if string is `NULL` terminated + * + * Parses a string into an #hb_buffer_serialize_format_t. Does not check if + * @str is a valid buffer serialization format, use + * hb_buffer_serialize_list_formats() to get the list of supported formats. + * + * Return value: + * The parsed #hb_buffer_serialize_format_t. + * + * Since: 0.9.7 + **/ +hb_buffer_serialize_format_t +hb_buffer_serialize_format_from_string (const char *str, int len) +{ + /* Upper-case it. */ + return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020u); +} + +/** + * hb_buffer_serialize_format_to_string: + * @format: an #hb_buffer_serialize_format_t to convert. + * + * Converts @format to the string corresponding it, or `NULL` if it is not a valid + * #hb_buffer_serialize_format_t. + * + * Return value: (transfer none): + * A `NULL` terminated string corresponding to @format. Should not be freed. + * + * Since: 0.9.7 + **/ +const char * +hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format) +{ + switch ((unsigned) format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return _hb_buffer_serialize_formats[0]; + case HB_BUFFER_SERIALIZE_FORMAT_JSON: return _hb_buffer_serialize_formats[1]; + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return nullptr; + } +} + +static unsigned int +_hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + hb_glyph_position_t *pos = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? + nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); + + *buf_consumed = 0; + hb_position_t x = 0, y = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + /* In the following code, we know b is large enough that no overflow can happen. */ + +#define APPEND(s) HB_STMT_START { strcpy (p, s); p += strlen (s); } HB_STMT_END + + if (i) + *p++ = ','; + else + *p++ = '['; + + *p++ = '{'; + + APPEND ("\"g\":"); + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES)) + { + char g[128]; + hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g)); + *p++ = '"'; + for (char *q = g; *q; q++) + { + if (unlikely (*q == '"' || *q == '\\')) + *p++ = '\\'; + *p++ = *q; + } + *p++ = '"'; + } + else + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster)); + } + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS)) + { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d", + x+pos[i].x_offset, y+pos[i].y_offset)); + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d", + pos[i].x_advance, pos[i].y_advance)); + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS) + { + if (info[i].mask & HB_GLYPH_FLAG_DEFINED) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"fl\":%u", info[i].mask & HB_GLYPH_FLAG_DEFINED)); + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) + { + hb_glyph_extents_t extents; + hb_font_get_glyph_extents(font, info[i].codepoint, &extents); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"xb\":%d,\"yb\":%d", + extents.x_bearing, extents.y_bearing)); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"w\":%d,\"h\":%d", + extents.width, extents.height)); + } + + *p++ = '}'; + if (i == end-1) + *p++ = ']'; + + unsigned int l = p - b; + if (buf_size > l) + { + hb_memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + + if (pos && (flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) + { + x += pos[i].x_advance; + y += pos[i].y_advance; + } + } + + return end - start; +} + +static unsigned int +_hb_buffer_serialize_unicode_json (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + + *buf_consumed = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + if (i) + *p++ = ','; + else + *p++ = '['; + + *p++ = '{'; + + APPEND ("\"u\":"); + + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster)); + } + + *p++ = '}'; + + if (i == end-1) + *p++ = ']'; + + unsigned int l = p - b; + if (buf_size > l) + { + hb_memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + + } + + return end - start; +} + +static unsigned int +_hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + hb_glyph_position_t *pos = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? + nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); + + *buf_consumed = 0; + hb_position_t x = 0, y = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + /* In the following code, we know b is large enough that no overflow can happen. */ + + if (i) + *p++ = '|'; + else + *p++ = '['; + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES)) + { + /* TODO Escape delimiters we use. */ + hb_font_glyph_to_string (font, info[i].codepoint, p, 128); + p += strlen (p); + } + else + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster)); + } + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS)) + { + if (x+pos[i].x_offset || y+pos[i].y_offset) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", x+pos[i].x_offset, y+pos[i].y_offset)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) + { + *p++ = '+'; + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance)); + if (pos[i].y_advance) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance)); + } + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS) + { + if (info[i].mask & HB_GLYPH_FLAG_DEFINED) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "#%X", info[i].mask &HB_GLYPH_FLAG_DEFINED)); + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) + { + hb_glyph_extents_t extents; + hb_font_get_glyph_extents(font, info[i].codepoint, &extents); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "<%d,%d,%d,%d>", extents.x_bearing, extents.y_bearing, extents.width, extents.height)); + } + + if (i == end-1) { + *p++ = ']'; + } + + unsigned int l = p - b; + if (buf_size > l) + { + hb_memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + + if (pos && (flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) + { + x += pos[i].x_advance; + y += pos[i].y_advance; + } + } + + return end - start; +} + + +static unsigned int +_hb_buffer_serialize_unicode_text (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + *buf_consumed = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + if (i) + *p++ = '|'; + else + *p++ = '<'; + + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "U+%04X", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster)); + } + + if (i == end-1) + *p++ = '>'; + + unsigned int l = p - b; + if (buf_size > l) + { + hb_memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + } + return end - start; +} + +/** + * hb_buffer_serialize_glyphs: + * @buffer: an #hb_buffer_t buffer. + * @start: the first item in @buffer to serialize. + * @end: the last item in @buffer to serialize. + * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to + * write serialized buffer into. + * @buf_size: the size of @buf. + * @buf_consumed: (out) (optional): if not `NULL`, will be set to the number of bytes written into @buf. + * @font: (nullable): the #hb_font_t used to shape this buffer, needed to + * read glyph names and extents. If `NULL`, an empty font will be used. + * @format: the #hb_buffer_serialize_format_t to use for formatting the output. + * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties + * to serialize. + * + * Serializes @buffer into a textual representation of its glyph content, + * useful for showing the contents of the buffer, for example during debugging. + * There are currently two supported serialization formats: + * + * ## text + * A human-readable, plain text format. + * The serialized glyphs will look something like: + * + * ``` + * [uni0651=0@518,0+0|uni0628=0+1897] + * ``` + * + * - The serialized glyphs are delimited with `[` and `]`. + * - Glyphs are separated with `|` + * - Each glyph starts with glyph name, or glyph index if + * #HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES flag is set. Then, + * - If #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set, `=` then #hb_glyph_info_t.cluster. + * - If #HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS is not set, the #hb_glyph_position_t in the format: + * - If both #hb_glyph_position_t.x_offset and #hb_glyph_position_t.y_offset are not 0, `@x_offset,y_offset`. Then, + * - `+x_advance`, then `,y_advance` if #hb_glyph_position_t.y_advance is not 0. Then, + * - If #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set, the #hb_glyph_extents_t in the format `` + * + * ## json + * A machine-readable, structured format. + * The serialized glyphs will look something like: + * + * ``` + * [{"g":"uni0651","cl":0,"dx":518,"dy":0,"ax":0,"ay":0}, + * {"g":"uni0628","cl":0,"dx":0,"dy":0,"ax":1897,"ay":0}] + * ``` + * + * Each glyph is a JSON object, with the following properties: + * - `g`: the glyph name or glyph index if + * #HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES flag is set. + * - `cl`: #hb_glyph_info_t.cluster if + * #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set. + * - `dx`,`dy`,`ax`,`ay`: #hb_glyph_position_t.x_offset, #hb_glyph_position_t.y_offset, + * #hb_glyph_position_t.x_advance and #hb_glyph_position_t.y_advance + * respectively, if #HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS is not set. + * - `xb`,`yb`,`w`,`h`: #hb_glyph_extents_t.x_bearing, #hb_glyph_extents_t.y_bearing, + * #hb_glyph_extents_t.width and #hb_glyph_extents_t.height respectively if + * #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set. + * + * Return value: + * The number of serialized items. + * + * Since: 0.9.7 + **/ +unsigned int +hb_buffer_serialize_glyphs (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + end = hb_clamp (end, start, buffer->len); + start = hb_min (start, end); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + *buf_consumed = 0; + if (buf_size) + *buf = '\0'; + + buffer->assert_glyphs (); + + if (!buffer->have_positions) + flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS; + + if (unlikely (start == end)) + return 0; + + if (!font) + font = hb_font_get_empty (); + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_serialize_glyphs_text (buffer, start, end, + buf, buf_size, buf_consumed, + font, flags); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_serialize_glyphs_json (buffer, start, end, + buf, buf_size, buf_consumed, + font, flags); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return 0; + + } +} + +/** + * hb_buffer_serialize_unicode: + * @buffer: an #hb_buffer_t buffer. + * @start: the first item in @buffer to serialize. + * @end: the last item in @buffer to serialize. + * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to + * write serialized buffer into. + * @buf_size: the size of @buf. + * @buf_consumed: (out) (optional): if not `NULL`, will be set to the number of bytes written into @buf. + * @format: the #hb_buffer_serialize_format_t to use for formatting the output. + * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties + * to serialize. + * + * Serializes @buffer into a textual representation of its content, + * when the buffer contains Unicode codepoints (i.e., before shaping). This is + * useful for showing the contents of the buffer, for example during debugging. + * There are currently two supported serialization formats: + * + * ## text + * A human-readable, plain text format. + * The serialized codepoints will look something like: + * + * ``` + *   + * ``` + * + * - Glyphs are separated with `|` + * - Unicode codepoints are expressed as zero-padded four (or more) + * digit hexadecimal numbers preceded by `U+` + * - If #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set, the cluster + * will be indicated with a `=` then #hb_glyph_info_t.cluster. + * + * ## json + * A machine-readable, structured format. + * The serialized codepoints will be a list of objects with the following + * properties: + * - `u`: the Unicode codepoint as a decimal integer + * - `cl`: #hb_glyph_info_t.cluster if + * #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set. + * + * For example: + * + * ``` + * [{u:1617,cl:0},{u:1576,cl:1}] + * ``` + * + * Return value: + * The number of serialized items. + * + * Since: 2.7.3 + **/ +unsigned int +hb_buffer_serialize_unicode (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + end = hb_clamp (end, start, buffer->len); + start = hb_min (start, end); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + *buf_consumed = 0; + if (buf_size) + *buf = '\0'; + + buffer->assert_unicode (); + + if (unlikely (start == end)) + return 0; + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_serialize_unicode_text (buffer, start, end, + buf, buf_size, buf_consumed, flags); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_serialize_unicode_json (buffer, start, end, + buf, buf_size, buf_consumed, flags); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return 0; + + } +} + +static unsigned int +_hb_buffer_serialize_invalid (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + assert (!buffer->len); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + if (buf_size < 3) + return 0; + if (format == HB_BUFFER_SERIALIZE_FORMAT_JSON) { + *buf++ = '['; + *buf++ = ']'; + *buf = '\0'; + } else if (format == HB_BUFFER_SERIALIZE_FORMAT_TEXT) { + *buf++ = '!'; + *buf++ = '!'; + *buf = '\0'; + } + *buf_consumed = 2; + return 0; +} + +/** + * hb_buffer_serialize: + * @buffer: an #hb_buffer_t buffer. + * @start: the first item in @buffer to serialize. + * @end: the last item in @buffer to serialize. + * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to + * write serialized buffer into. + * @buf_size: the size of @buf. + * @buf_consumed: (out) (optional): if not `NULL`, will be set to the number of bytes written into @buf. + * @font: (nullable): the #hb_font_t used to shape this buffer, needed to + * read glyph names and extents. If `NULL`, an empty font will be used. + * @format: the #hb_buffer_serialize_format_t to use for formatting the output. + * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties + * to serialize. + * + * Serializes @buffer into a textual representation of its content, whether + * Unicode codepoints or glyph identifiers and positioning information. This is + * useful for showing the contents of the buffer, for example during debugging. + * See the documentation of hb_buffer_serialize_unicode() and + * hb_buffer_serialize_glyphs() for a description of the output format. + * + * Return value: + * The number of serialized items. + * + * Since: 2.7.3 + **/ +unsigned int +hb_buffer_serialize (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + switch (buffer->content_type) + { + + case HB_BUFFER_CONTENT_TYPE_GLYPHS: + return hb_buffer_serialize_glyphs (buffer, start, end, buf, buf_size, + buf_consumed, font, format, flags); + + case HB_BUFFER_CONTENT_TYPE_UNICODE: + return hb_buffer_serialize_unicode (buffer, start, end, buf, buf_size, + buf_consumed, format, flags); + + case HB_BUFFER_CONTENT_TYPE_INVALID: + default: + return _hb_buffer_serialize_invalid (buffer, start, end, buf, buf_size, + buf_consumed, format, flags); + } +} + +static bool +parse_int (const char *pp, const char *end, int32_t *pv) +{ + int v; + const char *p = pp; + if (unlikely (!hb_parse_int (&p, end, &v, true/* whole buffer */))) + return false; + + *pv = v; + return true; +} + +static bool +parse_uint (const char *pp, const char *end, uint32_t *pv) +{ + unsigned int v; + const char *p = pp; + if (unlikely (!hb_parse_uint (&p, end, &v, true/* whole buffer */))) + return false; + + *pv = v; + return true; +} + +static bool +parse_hex (const char *pp, const char *end, uint32_t *pv) +{ + unsigned int v; + const char *p = pp; + if (unlikely (!hb_parse_uint (&p, end, &v, true/* whole buffer */, 16))) + return false; + + *pv = v; + return true; +} + +#include "hb-buffer-deserialize-json.hh" +#include "hb-buffer-deserialize-text-glyphs.hh" +#include "hb-buffer-deserialize-text-unicode.hh" + +/** + * hb_buffer_deserialize_glyphs: + * @buffer: an #hb_buffer_t buffer. + * @buf: (array length=buf_len): string to deserialize + * @buf_len: the size of @buf, or -1 if it is `NULL`-terminated + * @end_ptr: (out) (optional): output pointer to the character after last + * consumed one. + * @font: (nullable): font for getting glyph IDs + * @format: the #hb_buffer_serialize_format_t of the input @buf + * + * Deserializes glyphs @buffer from textual representation in the format + * produced by hb_buffer_serialize_glyphs(). + * + * Return value: `true` if parse was successful, `false` if an error + * occurred. + * + * Since: 0.9.7 + **/ +hb_bool_t +hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, + const char *buf, + int buf_len, /* -1 means nul-terminated */ + const char **end_ptr, /* May be NULL */ + hb_font_t *font, /* May be NULL */ + hb_buffer_serialize_format_t format) +{ + const char *end; + if (!end_ptr) + end_ptr = &end; + *end_ptr = buf; + + buffer->assert_glyphs (); + + if (unlikely (hb_object_is_immutable (buffer))) + { + if (end_ptr) + *end_ptr = buf; + return false; + } + + if (buf_len == -1) + buf_len = strlen (buf); + + if (!buf_len) + { + *end_ptr = buf; + return false; + } + + hb_buffer_set_content_type (buffer, HB_BUFFER_CONTENT_TYPE_GLYPHS); + + if (!font) + font = hb_font_get_empty (); + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_deserialize_text_glyphs (buffer, + buf, buf_len, end_ptr, + font); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_deserialize_json (buffer, + buf, buf_len, end_ptr, + font); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return false; + + } +} + + +/** + * hb_buffer_deserialize_unicode: + * @buffer: an #hb_buffer_t buffer. + * @buf: (array length=buf_len): string to deserialize + * @buf_len: the size of @buf, or -1 if it is `NULL`-terminated + * @end_ptr: (out) (optional): output pointer to the character after last + * consumed one. + * @format: the #hb_buffer_serialize_format_t of the input @buf + * + * Deserializes Unicode @buffer from textual representation in the format + * produced by hb_buffer_serialize_unicode(). + * + * Return value: `true` if parse was successful, `false` if an error + * occurred. + * + * Since: 2.7.3 + **/ +hb_bool_t +hb_buffer_deserialize_unicode (hb_buffer_t *buffer, + const char *buf, + int buf_len, /* -1 means nul-terminated */ + const char **end_ptr, /* May be NULL */ + hb_buffer_serialize_format_t format) +{ + const char *end; + if (!end_ptr) + end_ptr = &end; + *end_ptr = buf; + + buffer->assert_unicode (); + + if (unlikely (hb_object_is_immutable (buffer))) + { + if (end_ptr) + *end_ptr = buf; + return false; + } + + if (buf_len == -1) + buf_len = strlen (buf); + + if (!buf_len) + { + *end_ptr = buf; + return false; + } + + hb_buffer_set_content_type (buffer, HB_BUFFER_CONTENT_TYPE_UNICODE); + + hb_font_t* font = hb_font_get_empty (); + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_deserialize_text_unicode (buffer, + buf, buf_len, end_ptr, + font); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_deserialize_json (buffer, + buf, buf_len, end_ptr, + font); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return false; + + } +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-buffer-verify.cc b/gfx/harfbuzz/src/hb-buffer-verify.cc new file mode 100644 index 0000000000..f111b2d8dc --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-verify.cc @@ -0,0 +1,439 @@ +/* + * Copyright © 2022 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifndef HB_NO_BUFFER_VERIFY + +#include "hb-buffer.hh" + + +#define BUFFER_VERIFY_ERROR "buffer verify error: " +static inline void +buffer_verify_error (hb_buffer_t *buffer, + hb_font_t *font, + const char *fmt, + ...) HB_PRINTF_FUNC(3, 4); + +static inline void +buffer_verify_error (hb_buffer_t *buffer, + hb_font_t *font, + const char *fmt, + ...) +{ + va_list ap; + va_start (ap, fmt); + if (buffer->messaging ()) + { + buffer->message_impl (font, fmt, ap); + } + else + { + fprintf (stderr, "harfbuzz "); + vfprintf (stderr, fmt, ap); + fprintf (stderr, "\n"); + } + va_end (ap); +} + +static bool +buffer_verify_monotone (hb_buffer_t *buffer, + hb_font_t *font) +{ + /* Check that clusters are monotone. */ + if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES || + buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS) + { + bool is_forward = HB_DIRECTION_IS_FORWARD (hb_buffer_get_direction (buffer)); + + unsigned int num_glyphs; + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, &num_glyphs); + + for (unsigned int i = 1; i < num_glyphs; i++) + if (info[i-1].cluster != info[i].cluster && + (info[i-1].cluster < info[i].cluster) != is_forward) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "clusters are not monotone."); + return false; + } + } + + return true; +} + +static bool +buffer_verify_unsafe_to_break (hb_buffer_t *buffer, + hb_buffer_t *text_buffer, + hb_font_t *font, + const hb_feature_t *features, + unsigned int num_features, + const char * const *shapers) +{ + if (buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES && + buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS) + { + /* Cannot perform this check without monotone clusters. */ + return true; + } + + /* Check that breaking up shaping at safe-to-break is indeed safe. */ + + hb_buffer_t *fragment = hb_buffer_create_similar (buffer); + hb_buffer_set_flags (fragment, (hb_buffer_flags_t (hb_buffer_get_flags (fragment) & ~HB_BUFFER_FLAG_VERIFY))); + hb_buffer_t *reconstruction = hb_buffer_create_similar (buffer); + hb_buffer_set_flags (reconstruction, (hb_buffer_flags_t (hb_buffer_get_flags (reconstruction) & ~HB_BUFFER_FLAG_VERIFY))); + + unsigned int num_glyphs; + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, &num_glyphs); + + unsigned int num_chars; + hb_glyph_info_t *text = hb_buffer_get_glyph_infos (text_buffer, &num_chars); + + /* Chop text and shape fragments. */ + bool forward = HB_DIRECTION_IS_FORWARD (hb_buffer_get_direction (buffer)); + unsigned int start = 0; + unsigned int text_start = forward ? 0 : num_chars; + unsigned int text_end = text_start; + for (unsigned int end = 1; end < num_glyphs + 1; end++) + { + if (end < num_glyphs && + (info[end].cluster == info[end-1].cluster || + info[end-(forward?0:1)].mask & HB_GLYPH_FLAG_UNSAFE_TO_BREAK)) + continue; + + /* Shape segment corresponding to glyphs start..end. */ + if (end == num_glyphs) + { + if (forward) + text_end = num_chars; + else + text_start = 0; + } + else + { + if (forward) + { + unsigned int cluster = info[end].cluster; + while (text_end < num_chars && text[text_end].cluster < cluster) + text_end++; + } + else + { + unsigned int cluster = info[end - 1].cluster; + while (text_start && text[text_start - 1].cluster >= cluster) + text_start--; + } + } + assert (text_start < text_end); + + if (0) + printf("start %u end %u text start %u end %u\n", start, end, text_start, text_end); + + hb_buffer_clear_contents (fragment); + + hb_buffer_flags_t flags = hb_buffer_get_flags (fragment); + if (0 < text_start) + flags = (hb_buffer_flags_t) (flags & ~HB_BUFFER_FLAG_BOT); + if (text_end < num_chars) + flags = (hb_buffer_flags_t) (flags & ~HB_BUFFER_FLAG_EOT); + hb_buffer_set_flags (fragment, flags); + + hb_buffer_append (fragment, text_buffer, text_start, text_end); + if (!hb_shape_full (font, fragment, features, num_features, shapers)) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "shaping failed while shaping fragment."); + hb_buffer_destroy (reconstruction); + hb_buffer_destroy (fragment); + return false; + } + else if (!fragment->successful || fragment->shaping_failed) + { + hb_buffer_destroy (reconstruction); + hb_buffer_destroy (fragment); + return true; + } + hb_buffer_append (reconstruction, fragment, 0, -1); + + start = end; + if (forward) + text_start = text_end; + else + text_end = text_start; + } + + bool ret = true; + hb_buffer_diff_flags_t diff = hb_buffer_diff (reconstruction, buffer, (hb_codepoint_t) -1, 0); + if (diff & ~HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "unsafe-to-break test failed."); + ret = false; + + /* Return the reconstructed result instead so it can be inspected. */ + hb_buffer_set_length (buffer, 0); + hb_buffer_append (buffer, reconstruction, 0, -1); + } + + hb_buffer_destroy (reconstruction); + hb_buffer_destroy (fragment); + + return ret; +} + +static bool +buffer_verify_unsafe_to_concat (hb_buffer_t *buffer, + hb_buffer_t *text_buffer, + hb_font_t *font, + const hb_feature_t *features, + unsigned int num_features, + const char * const *shapers) +{ + if (buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES && + buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS) + { + /* Cannot perform this check without monotone clusters. */ + return true; + } + + /* Check that shuffling up text before shaping at safe-to-concat points + * is indeed safe. */ + + /* This is what we do: + * + * 1. We shape text once. Then segment the text at all the safe-to-concat + * points; + * + * 2. Then we create two buffers, one containing all the even segments and + * one all the odd segments. + * + * 3. Because all these segments were safe-to-concat at both ends, we + * expect that concatenating them and shaping should NOT change the + * shaping results of each segment. As such, we expect that after + * shaping the two buffers, we still get cluster boundaries at the + * segment boundaries, and that those all are safe-to-concat points. + * Moreover, that there are NOT any safe-to-concat points within the + * segments. + * + * 4. Finally, we reconstruct the shaping results of the original text by + * simply interleaving the shaping results of the segments from the two + * buffers, and assert that the total shaping results is the same as + * the one from original buffer in step 1. + */ + + hb_buffer_t *fragments[2] {hb_buffer_create_similar (buffer), + hb_buffer_create_similar (buffer)}; + hb_buffer_set_flags (fragments[0], (hb_buffer_flags_t (hb_buffer_get_flags (fragments[0]) & ~HB_BUFFER_FLAG_VERIFY))); + hb_buffer_set_flags (fragments[1], (hb_buffer_flags_t (hb_buffer_get_flags (fragments[1]) & ~HB_BUFFER_FLAG_VERIFY))); + hb_buffer_t *reconstruction = hb_buffer_create_similar (buffer); + hb_buffer_set_flags (reconstruction, (hb_buffer_flags_t (hb_buffer_get_flags (reconstruction) & ~HB_BUFFER_FLAG_VERIFY))); + hb_segment_properties_t props; + hb_buffer_get_segment_properties (buffer, &props); + hb_buffer_set_segment_properties (fragments[0], &props); + hb_buffer_set_segment_properties (fragments[1], &props); + hb_buffer_set_segment_properties (reconstruction, &props); + + unsigned num_glyphs; + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, &num_glyphs); + + unsigned num_chars; + hb_glyph_info_t *text = hb_buffer_get_glyph_infos (text_buffer, &num_chars); + + bool forward = HB_DIRECTION_IS_FORWARD (hb_buffer_get_direction (buffer)); + + if (!forward) + hb_buffer_reverse (buffer); + + /* + * Split text into segments and collect into to fragment streams. + */ + { + unsigned fragment_idx = 0; + unsigned start = 0; + unsigned text_start = 0; + unsigned text_end = 0; + for (unsigned end = 1; end < num_glyphs + 1; end++) + { + if (end < num_glyphs && + (info[end].cluster == info[end-1].cluster || + info[end].mask & HB_GLYPH_FLAG_UNSAFE_TO_CONCAT)) + continue; + + /* Accumulate segment corresponding to glyphs start..end. */ + if (end == num_glyphs) + text_end = num_chars; + else + { + unsigned cluster = info[end].cluster; + while (text_end < num_chars && text[text_end].cluster < cluster) + text_end++; + } + assert (text_start < text_end); + + if (0) + printf("start %u end %u text start %u end %u\n", start, end, text_start, text_end); + +#if 0 + hb_buffer_flags_t flags = hb_buffer_get_flags (fragment); + if (0 < text_start) + flags = (hb_buffer_flags_t) (flags & ~HB_BUFFER_FLAG_BOT); + if (text_end < num_chars) + flags = (hb_buffer_flags_t) (flags & ~HB_BUFFER_FLAG_EOT); + hb_buffer_set_flags (fragment, flags); +#endif + + hb_buffer_append (fragments[fragment_idx], text_buffer, text_start, text_end); + + start = end; + text_start = text_end; + fragment_idx = 1 - fragment_idx; + } + } + + bool ret = true; + hb_buffer_diff_flags_t diff; + /* + * Shape the two fragment streams. + */ + if (!hb_shape_full (font, fragments[0], features, num_features, shapers)) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "shaping failed while shaping fragment."); + ret = false; + goto out; + } + else if (!fragments[0]->successful || fragments[0]->shaping_failed) + { + ret = true; + goto out; + } + if (!hb_shape_full (font, fragments[1], features, num_features, shapers)) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "shaping failed while shaping fragment."); + ret = false; + goto out; + } + else if (!fragments[1]->successful || fragments[1]->shaping_failed) + { + ret = true; + goto out; + } + + if (!forward) + { + hb_buffer_reverse (fragments[0]); + hb_buffer_reverse (fragments[1]); + } + + /* + * Reconstruct results. + */ + { + unsigned fragment_idx = 0; + unsigned fragment_start[2] {0, 0}; + unsigned fragment_num_glyphs[2]; + hb_glyph_info_t *fragment_info[2]; + for (unsigned i = 0; i < 2; i++) + fragment_info[i] = hb_buffer_get_glyph_infos (fragments[i], &fragment_num_glyphs[i]); + while (fragment_start[0] < fragment_num_glyphs[0] || + fragment_start[1] < fragment_num_glyphs[1]) + { + unsigned fragment_end = fragment_start[fragment_idx] + 1; + while (fragment_end < fragment_num_glyphs[fragment_idx] && + (fragment_info[fragment_idx][fragment_end].cluster == fragment_info[fragment_idx][fragment_end - 1].cluster || + fragment_info[fragment_idx][fragment_end].mask & HB_GLYPH_FLAG_UNSAFE_TO_CONCAT)) + fragment_end++; + + hb_buffer_append (reconstruction, fragments[fragment_idx], fragment_start[fragment_idx], fragment_end); + + fragment_start[fragment_idx] = fragment_end; + fragment_idx = 1 - fragment_idx; + } + } + + if (!forward) + { + hb_buffer_reverse (buffer); + hb_buffer_reverse (reconstruction); + } + + /* + * Diff results. + */ + diff = hb_buffer_diff (reconstruction, buffer, (hb_codepoint_t) -1, 0); + if (diff & ~HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH) + { + buffer_verify_error (buffer, font, BUFFER_VERIFY_ERROR "unsafe-to-concat test failed."); + ret = false; + + /* Return the reconstructed result instead so it can be inspected. */ + hb_buffer_set_length (buffer, 0); + hb_buffer_append (buffer, reconstruction, 0, -1); + } + + +out: + hb_buffer_destroy (reconstruction); + hb_buffer_destroy (fragments[0]); + hb_buffer_destroy (fragments[1]); + + return ret; +} + +bool +hb_buffer_t::verify (hb_buffer_t *text_buffer, + hb_font_t *font, + const hb_feature_t *features, + unsigned int num_features, + const char * const *shapers) +{ + bool ret = true; + if (!buffer_verify_monotone (this, font)) + ret = false; + if (!buffer_verify_unsafe_to_break (this, text_buffer, font, features, num_features, shapers)) + ret = false; + if ((flags & HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT) != 0 && + !buffer_verify_unsafe_to_concat (this, text_buffer, font, features, num_features, shapers)) + ret = false; + if (!ret) + { +#ifndef HB_NO_BUFFER_SERIALIZE + unsigned len = text_buffer->len; + hb_vector_t bytes; + if (likely (bytes.resize (len * 10 + 16))) + { + hb_buffer_serialize_unicode (text_buffer, + 0, len, + bytes.arrayZ, bytes.length, + &len, + HB_BUFFER_SERIALIZE_FORMAT_TEXT, + HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS); + buffer_verify_error (this, font, BUFFER_VERIFY_ERROR "text was: %s.", bytes.arrayZ); + } +#endif + } + return ret; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-buffer.cc b/gfx/harfbuzz/src/hb-buffer.cc new file mode 100644 index 0000000000..ace2a104fd --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer.cc @@ -0,0 +1,2222 @@ +/* + * Copyright © 1998-2004 David Turner and Werner Lemberg + * Copyright © 2004,2007,2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Owen Taylor, Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb-buffer.hh" +#include "hb-utf.hh" + + +/** + * SECTION: hb-buffer + * @title: hb-buffer + * @short_description: Input and output buffers + * @include: hb.h + * + * Buffers serve a dual role in HarfBuzz; before shaping, they hold + * the input characters that are passed to hb_shape(), and after + * shaping they hold the output glyphs. + * + * The input buffer is a sequence of Unicode codepoints, with + * associated attributes such as direction and script. The output + * buffer is a sequence of glyphs, with associated attributes such + * as position and cluster. + **/ + + +/** + * hb_segment_properties_equal: + * @a: first #hb_segment_properties_t to compare. + * @b: second #hb_segment_properties_t to compare. + * + * Checks the equality of two #hb_segment_properties_t's. + * + * Return value: + * `true` if all properties of @a equal those of @b, `false` otherwise. + * + * Since: 0.9.7 + **/ +hb_bool_t +hb_segment_properties_equal (const hb_segment_properties_t *a, + const hb_segment_properties_t *b) +{ + return a->direction == b->direction && + a->script == b->script && + a->language == b->language && + a->reserved1 == b->reserved1 && + a->reserved2 == b->reserved2; + +} + +/** + * hb_segment_properties_hash: + * @p: #hb_segment_properties_t to hash. + * + * Creates a hash representing @p. + * + * Return value: + * A hash of @p. + * + * Since: 0.9.7 + **/ +unsigned int +hb_segment_properties_hash (const hb_segment_properties_t *p) +{ + return ((unsigned int) p->direction * 31 + + (unsigned int) p->script) * 31 + + (intptr_t) (p->language); +} + +/** + * hb_segment_properties_overlay: + * @p: #hb_segment_properties_t to fill in. + * @src: #hb_segment_properties_t to fill in from. + * + * Fills in missing fields of @p from @src in a considered manner. + * + * First, if @p does not have direction set, direction is copied from @src. + * + * Next, if @p and @src have the same direction (which can be unset), if @p + * does not have script set, script is copied from @src. + * + * Finally, if @p and @src have the same direction and script (which either + * can be unset), if @p does not have language set, language is copied from + * @src. + * + * Since: 3.3.0 + **/ +void +hb_segment_properties_overlay (hb_segment_properties_t *p, + const hb_segment_properties_t *src) +{ + if (unlikely (!p || !src)) + return; + + if (!p->direction) + p->direction = src->direction; + + if (p->direction != src->direction) + return; + + if (!p->script) + p->script = src->script; + + if (p->script != src->script) + return; + + if (!p->language) + p->language = src->language; +} + +/* Here is how the buffer works internally: + * + * There are two info pointers: info and out_info. They always have + * the same allocated size, but different lengths. + * + * As an optimization, both info and out_info may point to the + * same piece of memory, which is owned by info. This remains the + * case as long as out_len doesn't exceed i at any time. + * In that case, sync() is mostly no-op and the glyph operations + * operate mostly in-place. + * + * As soon as out_info gets longer than info, out_info is moved over + * to an alternate buffer (which we reuse the pos buffer for), and its + * current contents (out_len entries) are copied to the new place. + * + * This should all remain transparent to the user. sync() then + * switches info over to out_info and does housekeeping. + */ + + + +/* Internal API */ + +bool +hb_buffer_t::enlarge (unsigned int size) +{ + if (unlikely (!successful)) + return false; + if (unlikely (size > max_len)) + { + successful = false; + return false; + } + + unsigned int new_allocated = allocated; + hb_glyph_position_t *new_pos = nullptr; + hb_glyph_info_t *new_info = nullptr; + bool separate_out = out_info != info; + + if (unlikely (hb_unsigned_mul_overflows (size, sizeof (info[0])))) + goto done; + + while (size >= new_allocated) + new_allocated += (new_allocated >> 1) + 32; + + unsigned new_bytes; + if (unlikely (hb_unsigned_mul_overflows (new_allocated, sizeof (info[0]), &new_bytes))) + goto done; + + static_assert (sizeof (info[0]) == sizeof (pos[0]), ""); + new_pos = (hb_glyph_position_t *) hb_realloc (pos, new_bytes); + new_info = (hb_glyph_info_t *) hb_realloc (info, new_bytes); + +done: + if (unlikely (!new_pos || !new_info)) + successful = false; + + if (likely (new_pos)) + pos = new_pos; + + if (likely (new_info)) + info = new_info; + + out_info = separate_out ? (hb_glyph_info_t *) pos : info; + if (likely (successful)) + allocated = new_allocated; + + return likely (successful); +} + +bool +hb_buffer_t::make_room_for (unsigned int num_in, + unsigned int num_out) +{ + if (unlikely (!ensure (out_len + num_out))) return false; + + if (out_info == info && + out_len + num_out > idx + num_in) + { + assert (have_output); + + out_info = (hb_glyph_info_t *) pos; + hb_memcpy (out_info, info, out_len * sizeof (out_info[0])); + } + + return true; +} + +bool +hb_buffer_t::shift_forward (unsigned int count) +{ + assert (have_output); + if (unlikely (!ensure (len + count))) return false; + + memmove (info + idx + count, info + idx, (len - idx) * sizeof (info[0])); + if (idx + count > len) + { + /* Under memory failure we might expose this area. At least + * clean it up. Oh well... + * + * Ideally, we should at least set Default_Ignorable bits on + * these, as well as consistent cluster values. But the former + * is layering violation... */ + hb_memset (info + len, 0, (idx + count - len) * sizeof (info[0])); + } + len += count; + idx += count; + + return true; +} + +hb_buffer_t::scratch_buffer_t * +hb_buffer_t::get_scratch_buffer (unsigned int *size) +{ + have_output = false; + have_positions = false; + + out_len = 0; + out_info = info; + + assert ((uintptr_t) pos % sizeof (scratch_buffer_t) == 0); + *size = allocated * sizeof (pos[0]) / sizeof (scratch_buffer_t); + return (scratch_buffer_t *) (void *) pos; +} + + + +/* HarfBuzz-Internal API */ + +void +hb_buffer_t::similar (const hb_buffer_t &src) +{ + hb_unicode_funcs_destroy (unicode); + unicode = hb_unicode_funcs_reference (src.unicode); + flags = src.flags; + cluster_level = src.cluster_level; + replacement = src.replacement; + invisible = src.invisible; + not_found = src.not_found; +} + +void +hb_buffer_t::reset () +{ + hb_unicode_funcs_destroy (unicode); + unicode = hb_unicode_funcs_reference (hb_unicode_funcs_get_default ()); + flags = HB_BUFFER_FLAG_DEFAULT; + cluster_level = HB_BUFFER_CLUSTER_LEVEL_DEFAULT; + replacement = HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT; + invisible = 0; + not_found = 0; + + clear (); +} + +void +hb_buffer_t::clear () +{ + content_type = HB_BUFFER_CONTENT_TYPE_INVALID; + hb_segment_properties_t default_props = HB_SEGMENT_PROPERTIES_DEFAULT; + props = default_props; + + successful = true; + shaping_failed = false; + have_output = false; + have_positions = false; + + idx = 0; + len = 0; + out_len = 0; + out_info = info; + + hb_memset (context, 0, sizeof context); + hb_memset (context_len, 0, sizeof context_len); + + deallocate_var_all (); + serial = 0; + scratch_flags = HB_BUFFER_SCRATCH_FLAG_DEFAULT; +} + +void +hb_buffer_t::enter () +{ + deallocate_var_all (); + serial = 0; + shaping_failed = false; + scratch_flags = HB_BUFFER_SCRATCH_FLAG_DEFAULT; + unsigned mul; + if (likely (!hb_unsigned_mul_overflows (len, HB_BUFFER_MAX_LEN_FACTOR, &mul))) + { + max_len = hb_max (mul, (unsigned) HB_BUFFER_MAX_LEN_MIN); + } + if (likely (!hb_unsigned_mul_overflows (len, HB_BUFFER_MAX_OPS_FACTOR, &mul))) + { + max_ops = hb_max (mul, (unsigned) HB_BUFFER_MAX_OPS_MIN); + } +} +void +hb_buffer_t::leave () +{ + max_len = HB_BUFFER_MAX_LEN_DEFAULT; + max_ops = HB_BUFFER_MAX_OPS_DEFAULT; + deallocate_var_all (); + serial = 0; + // Intentionally not reseting shaping_failed, such that it can be inspected. +} + + +void +hb_buffer_t::add (hb_codepoint_t codepoint, + unsigned int cluster) +{ + hb_glyph_info_t *glyph; + + if (unlikely (!ensure (len + 1))) return; + + glyph = &info[len]; + + hb_memset (glyph, 0, sizeof (*glyph)); + glyph->codepoint = codepoint; + glyph->mask = 0; + glyph->cluster = cluster; + + len++; +} + +void +hb_buffer_t::add_info (const hb_glyph_info_t &glyph_info) +{ + if (unlikely (!ensure (len + 1))) return; + + info[len] = glyph_info; + + len++; +} + + +void +hb_buffer_t::clear_output () +{ + have_output = true; + have_positions = false; + + idx = 0; + out_len = 0; + out_info = info; +} + +void +hb_buffer_t::clear_positions () +{ + have_output = false; + have_positions = true; + + out_len = 0; + out_info = info; + + hb_memset (pos, 0, sizeof (pos[0]) * len); +} + +bool +hb_buffer_t::sync () +{ + bool ret = false; + + assert (have_output); + + assert (idx <= len); + + if (unlikely (!successful || !next_glyphs (len - idx))) + goto reset; + + if (out_info != info) + { + pos = (hb_glyph_position_t *) info; + info = out_info; + } + len = out_len; + ret = true; + +reset: + have_output = false; + out_len = 0; + out_info = info; + idx = 0; + + return ret; +} + +int +hb_buffer_t::sync_so_far () +{ + bool had_output = have_output; + unsigned out_i = out_len; + unsigned i = idx; + unsigned old_idx = idx; + + if (sync ()) + idx = out_i; + else + idx = i; + + if (had_output) + { + have_output = true; + out_len = idx; + } + + assert (idx <= len); + + return idx - old_idx; +} + +bool +hb_buffer_t::move_to (unsigned int i) +{ + if (!have_output) + { + assert (i <= len); + idx = i; + return true; + } + if (unlikely (!successful)) + return false; + + assert (i <= out_len + (len - idx)); + + if (out_len < i) + { + unsigned int count = i - out_len; + if (unlikely (!make_room_for (count, count))) return false; + + memmove (out_info + out_len, info + idx, count * sizeof (out_info[0])); + idx += count; + out_len += count; + } + else if (out_len > i) + { + /* Tricky part: rewinding... */ + unsigned int count = out_len - i; + + /* This will blow in our face if memory allocation fails later + * in this same lookup... + * + * We used to shift with extra 32 items. + * But that would leave empty slots in the buffer in case of allocation + * failures. See comments in shift_forward(). This can cause O(N^2) + * behavior more severely than adding 32 empty slots can... */ + if (unlikely (idx < count && !shift_forward (count - idx))) return false; + + assert (idx >= count); + + idx -= count; + out_len -= count; + memmove (info + idx, out_info + out_len, count * sizeof (out_info[0])); + } + + return true; +} + + +void +hb_buffer_t::set_masks (hb_mask_t value, + hb_mask_t mask, + unsigned int cluster_start, + unsigned int cluster_end) +{ + hb_mask_t not_mask = ~mask; + value &= mask; + + if (!mask) + return; + + unsigned int count = len; + for (unsigned int i = 0; i < count; i++) + if (cluster_start <= info[i].cluster && info[i].cluster < cluster_end) + info[i].mask = (info[i].mask & not_mask) | value; +} + +void +hb_buffer_t::merge_clusters_impl (unsigned int start, + unsigned int end) +{ + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS) + { + unsafe_to_break (start, end); + return; + } + + unsigned int cluster = info[start].cluster; + + for (unsigned int i = start + 1; i < end; i++) + cluster = hb_min (cluster, info[i].cluster); + + /* Extend end */ + if (cluster != info[end - 1].cluster) + while (end < len && info[end - 1].cluster == info[end].cluster) + end++; + + /* Extend start */ + if (cluster != info[start].cluster) + while (idx < start && info[start - 1].cluster == info[start].cluster) + start--; + + /* If we hit the start of buffer, continue in out-buffer. */ + if (idx == start && info[start].cluster != cluster) + for (unsigned int i = out_len; i && out_info[i - 1].cluster == info[start].cluster; i--) + set_cluster (out_info[i - 1], cluster); + + for (unsigned int i = start; i < end; i++) + set_cluster (info[i], cluster); +} +void +hb_buffer_t::merge_out_clusters (unsigned int start, + unsigned int end) +{ + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS) + return; + + if (unlikely (end - start < 2)) + return; + + unsigned int cluster = out_info[start].cluster; + + for (unsigned int i = start + 1; i < end; i++) + cluster = hb_min (cluster, out_info[i].cluster); + + /* Extend start */ + while (start && out_info[start - 1].cluster == out_info[start].cluster) + start--; + + /* Extend end */ + while (end < out_len && out_info[end - 1].cluster == out_info[end].cluster) + end++; + + /* If we hit the end of out-buffer, continue in buffer. */ + if (end == out_len) + for (unsigned int i = idx; i < len && info[i].cluster == out_info[end - 1].cluster; i++) + set_cluster (info[i], cluster); + + for (unsigned int i = start; i < end; i++) + set_cluster (out_info[i], cluster); +} +void +hb_buffer_t::delete_glyph () +{ + /* The logic here is duplicated in hb_ot_hide_default_ignorables(). */ + + unsigned int cluster = info[idx].cluster; + if ((idx + 1 < len && cluster == info[idx + 1].cluster) || + (out_len && cluster == out_info[out_len - 1].cluster)) + { + /* Cluster survives; do nothing. */ + goto done; + } + + if (out_len) + { + /* Merge cluster backward. */ + if (cluster < out_info[out_len - 1].cluster) + { + unsigned int mask = info[idx].mask; + unsigned int old_cluster = out_info[out_len - 1].cluster; + for (unsigned i = out_len; i && out_info[i - 1].cluster == old_cluster; i--) + set_cluster (out_info[i - 1], cluster, mask); + } + goto done; + } + + if (idx + 1 < len) + { + /* Merge cluster forward. */ + merge_clusters (idx, idx + 2); + goto done; + } + +done: + skip_glyph (); +} + +void +hb_buffer_t::delete_glyphs_inplace (bool (*filter) (const hb_glyph_info_t *info)) +{ + /* Merge clusters and delete filtered glyphs. + * NOTE! We can't use out-buffer as we have positioning data. */ + unsigned int j = 0; + unsigned int count = len; + for (unsigned int i = 0; i < count; i++) + { + if (filter (&info[i])) + { + /* Merge clusters. + * Same logic as delete_glyph(), but for in-place removal. */ + + unsigned int cluster = info[i].cluster; + if (i + 1 < count && cluster == info[i + 1].cluster) + continue; /* Cluster survives; do nothing. */ + + if (j) + { + /* Merge cluster backward. */ + if (cluster < info[j - 1].cluster) + { + unsigned int mask = info[i].mask; + unsigned int old_cluster = info[j - 1].cluster; + for (unsigned k = j; k && info[k - 1].cluster == old_cluster; k--) + set_cluster (info[k - 1], cluster, mask); + } + continue; + } + + if (i + 1 < count) + merge_clusters (i, i + 2); /* Merge cluster forward. */ + + continue; + } + + if (j != i) + { + info[j] = info[i]; + pos[j] = pos[i]; + } + j++; + } + len = j; +} + +void +hb_buffer_t::guess_segment_properties () +{ + assert_unicode (); + + /* If script is set to INVALID, guess from buffer contents */ + if (props.script == HB_SCRIPT_INVALID) { + for (unsigned int i = 0; i < len; i++) { + hb_script_t script = unicode->script (info[i].codepoint); + if (likely (script != HB_SCRIPT_COMMON && + script != HB_SCRIPT_INHERITED && + script != HB_SCRIPT_UNKNOWN)) { + props.script = script; + break; + } + } + } + + /* If direction is set to INVALID, guess from script */ + if (props.direction == HB_DIRECTION_INVALID) { + props.direction = hb_script_get_horizontal_direction (props.script); + if (props.direction == HB_DIRECTION_INVALID) + props.direction = HB_DIRECTION_LTR; + } + + /* If language is not set, use default language from locale */ + if (props.language == HB_LANGUAGE_INVALID) { + /* TODO get_default_for_script? using $LANGUAGE */ + props.language = hb_language_get_default (); + } +} + + +/* Public API */ + +DEFINE_NULL_INSTANCE (hb_buffer_t) = +{ + HB_OBJECT_HEADER_STATIC, + + const_cast (&_hb_Null_hb_unicode_funcs_t), + HB_BUFFER_FLAG_DEFAULT, + HB_BUFFER_CLUSTER_LEVEL_DEFAULT, + HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT, + 0, /* invisible */ + 0, /* not_found */ + + + HB_BUFFER_CONTENT_TYPE_INVALID, + HB_SEGMENT_PROPERTIES_DEFAULT, + + false, /* successful */ + true, /* shaping_failed */ + false, /* have_output */ + true /* have_positions */ + + /* Zero is good enough for everything else. */ +}; + + +/** + * hb_buffer_create: + * + * Creates a new #hb_buffer_t with all properties to defaults. + * + * Return value: (transfer full): + * A newly allocated #hb_buffer_t with a reference count of 1. The initial + * reference count should be released with hb_buffer_destroy() when you are done + * using the #hb_buffer_t. This function never returns `NULL`. If memory cannot + * be allocated, a special #hb_buffer_t object will be returned on which + * hb_buffer_allocation_successful() returns `false`. + * + * Since: 0.9.2 + **/ +hb_buffer_t * +hb_buffer_create () +{ + hb_buffer_t *buffer; + + if (!(buffer = hb_object_create ())) + return hb_buffer_get_empty (); + + buffer->max_len = HB_BUFFER_MAX_LEN_DEFAULT; + buffer->max_ops = HB_BUFFER_MAX_OPS_DEFAULT; + + buffer->reset (); + + return buffer; +} + +/** + * hb_buffer_create_similar: + * @src: An #hb_buffer_t + * + * Creates a new #hb_buffer_t, similar to hb_buffer_create(). The only + * difference is that the buffer is configured similarly to @src. + * + * Return value: (transfer full): + * A newly allocated #hb_buffer_t, similar to hb_buffer_create(). + * + * Since: 3.3.0 + **/ +hb_buffer_t * +hb_buffer_create_similar (const hb_buffer_t *src) +{ + hb_buffer_t *buffer = hb_buffer_create (); + + buffer->similar (*src); + + return buffer; +} + +/** + * hb_buffer_reset: + * @buffer: An #hb_buffer_t + * + * Resets the buffer to its initial status, as if it was just newly created + * with hb_buffer_create(). + * + * Since: 0.9.2 + **/ +void +hb_buffer_reset (hb_buffer_t *buffer) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->reset (); +} + +/** + * hb_buffer_get_empty: + * + * Fetches an empty #hb_buffer_t. + * + * Return value: (transfer full): The empty buffer + * + * Since: 0.9.2 + **/ +hb_buffer_t * +hb_buffer_get_empty () +{ + return const_cast (&Null (hb_buffer_t)); +} + +/** + * hb_buffer_reference: (skip) + * @buffer: An #hb_buffer_t + * + * Increases the reference count on @buffer by one. This prevents @buffer from + * being destroyed until a matching call to hb_buffer_destroy() is made. + * + * Return value: (transfer full): + * The referenced #hb_buffer_t. + * + * Since: 0.9.2 + **/ +hb_buffer_t * +hb_buffer_reference (hb_buffer_t *buffer) +{ + return hb_object_reference (buffer); +} + +/** + * hb_buffer_destroy: (skip) + * @buffer: An #hb_buffer_t + * + * Deallocate the @buffer. + * Decreases the reference count on @buffer by one. If the result is zero, then + * @buffer and all associated resources are freed. See hb_buffer_reference(). + * + * Since: 0.9.2 + **/ +void +hb_buffer_destroy (hb_buffer_t *buffer) +{ + if (!hb_object_destroy (buffer)) return; + + hb_unicode_funcs_destroy (buffer->unicode); + + hb_free (buffer->info); + hb_free (buffer->pos); +#ifndef HB_NO_BUFFER_MESSAGE + if (buffer->message_destroy) + buffer->message_destroy (buffer->message_data); +#endif + + hb_free (buffer); +} + +/** + * hb_buffer_set_user_data: (skip) + * @buffer: An #hb_buffer_t + * @key: The user-data key + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified buffer. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_buffer_set_user_data (hb_buffer_t *buffer, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (buffer, key, data, destroy, replace); +} + +/** + * hb_buffer_get_user_data: (skip) + * @buffer: An #hb_buffer_t + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified buffer. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 0.9.2 + **/ +void * +hb_buffer_get_user_data (const hb_buffer_t *buffer, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (buffer, key); +} + + +/** + * hb_buffer_set_content_type: + * @buffer: An #hb_buffer_t + * @content_type: The type of buffer contents to set + * + * Sets the type of @buffer contents. Buffers are either empty, contain + * characters (before shaping), or contain glyphs (the result of shaping). + * + * You rarely need to call this function, since a number of other + * functions transition the content type for you. Namely: + * + * - A newly created buffer starts with content type + * %HB_BUFFER_CONTENT_TYPE_INVALID. Calling hb_buffer_reset(), + * hb_buffer_clear_contents(), as well as calling hb_buffer_set_length() + * with an argument of zero all set the buffer content type to invalid + * as well. + * + * - Calling hb_buffer_add_utf8(), hb_buffer_add_utf16(), + * hb_buffer_add_utf32(), hb_buffer_add_codepoints() and + * hb_buffer_add_latin1() expect that buffer is either empty and + * have a content type of invalid, or that buffer content type is + * %HB_BUFFER_CONTENT_TYPE_UNICODE, and they also set the content + * type to Unicode if they added anything to an empty buffer. + * + * - Finally hb_shape() and hb_shape_full() expect that the buffer + * is either empty and have content type of invalid, or that buffer + * content type is %HB_BUFFER_CONTENT_TYPE_UNICODE, and upon + * success they set the buffer content type to + * %HB_BUFFER_CONTENT_TYPE_GLYPHS. + * + * The above transitions are designed such that one can use a buffer + * in a loop of "reset : add-text : shape" without needing to ever + * modify the content type manually. + * + * Since: 0.9.5 + **/ +void +hb_buffer_set_content_type (hb_buffer_t *buffer, + hb_buffer_content_type_t content_type) +{ + buffer->content_type = content_type; +} + +/** + * hb_buffer_get_content_type: + * @buffer: An #hb_buffer_t + * + * Fetches the type of @buffer contents. Buffers are either empty, contain + * characters (before shaping), or contain glyphs (the result of shaping). + * + * Return value: + * The type of @buffer contents + * + * Since: 0.9.5 + **/ +hb_buffer_content_type_t +hb_buffer_get_content_type (const hb_buffer_t *buffer) +{ + return buffer->content_type; +} + + +/** + * hb_buffer_set_unicode_funcs: + * @buffer: An #hb_buffer_t + * @unicode_funcs: The Unicode-functions structure + * + * Sets the Unicode-functions structure of a buffer to + * @unicode_funcs. + * + * Since: 0.9.2 + **/ +void +hb_buffer_set_unicode_funcs (hb_buffer_t *buffer, + hb_unicode_funcs_t *unicode_funcs) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + if (!unicode_funcs) + unicode_funcs = hb_unicode_funcs_get_default (); + + hb_unicode_funcs_reference (unicode_funcs); + hb_unicode_funcs_destroy (buffer->unicode); + buffer->unicode = unicode_funcs; +} + +/** + * hb_buffer_get_unicode_funcs: + * @buffer: An #hb_buffer_t + * + * Fetches the Unicode-functions structure of a buffer. + * + * Return value: The Unicode-functions structure + * + * Since: 0.9.2 + **/ +hb_unicode_funcs_t * +hb_buffer_get_unicode_funcs (const hb_buffer_t *buffer) +{ + return buffer->unicode; +} + +/** + * hb_buffer_set_direction: + * @buffer: An #hb_buffer_t + * @direction: the #hb_direction_t of the @buffer + * + * Set the text flow direction of the buffer. No shaping can happen without + * setting @buffer direction, and it controls the visual direction for the + * output glyphs; for RTL direction the glyphs will be reversed. Many layout + * features depend on the proper setting of the direction, for example, + * reversing RTL text before shaping, then shaping with LTR direction is not + * the same as keeping the text in logical order and shaping with RTL + * direction. + * + * Since: 0.9.2 + **/ +void +hb_buffer_set_direction (hb_buffer_t *buffer, + hb_direction_t direction) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->props.direction = direction; +} + +/** + * hb_buffer_get_direction: + * @buffer: An #hb_buffer_t + * + * See hb_buffer_set_direction() + * + * Return value: + * The direction of the @buffer. + * + * Since: 0.9.2 + **/ +hb_direction_t +hb_buffer_get_direction (const hb_buffer_t *buffer) +{ + return buffer->props.direction; +} + +/** + * hb_buffer_set_script: + * @buffer: An #hb_buffer_t + * @script: An #hb_script_t to set. + * + * Sets the script of @buffer to @script. + * + * Script is crucial for choosing the proper shaping behaviour for scripts that + * require it (e.g. Arabic) and the which OpenType features defined in the font + * to be applied. + * + * You can pass one of the predefined #hb_script_t values, or use + * hb_script_from_string() or hb_script_from_iso15924_tag() to get the + * corresponding script from an ISO 15924 script tag. + * + * Since: 0.9.2 + **/ +void +hb_buffer_set_script (hb_buffer_t *buffer, + hb_script_t script) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->props.script = script; +} + +/** + * hb_buffer_get_script: + * @buffer: An #hb_buffer_t + * + * Fetches the script of @buffer. + * + * Return value: + * The #hb_script_t of the @buffer + * + * Since: 0.9.2 + **/ +hb_script_t +hb_buffer_get_script (const hb_buffer_t *buffer) +{ + return buffer->props.script; +} + +/** + * hb_buffer_set_language: + * @buffer: An #hb_buffer_t + * @language: An hb_language_t to set + * + * Sets the language of @buffer to @language. + * + * Languages are crucial for selecting which OpenType feature to apply to the + * buffer which can result in applying language-specific behaviour. Languages + * are orthogonal to the scripts, and though they are related, they are + * different concepts and should not be confused with each other. + * + * Use hb_language_from_string() to convert from BCP 47 language tags to + * #hb_language_t. + * + * Since: 0.9.2 + **/ +void +hb_buffer_set_language (hb_buffer_t *buffer, + hb_language_t language) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->props.language = language; +} + +/** + * hb_buffer_get_language: + * @buffer: An #hb_buffer_t + * + * See hb_buffer_set_language(). + * + * Return value: (transfer none): + * The #hb_language_t of the buffer. Must not be freed by the caller. + * + * Since: 0.9.2 + **/ +hb_language_t +hb_buffer_get_language (const hb_buffer_t *buffer) +{ + return buffer->props.language; +} + +/** + * hb_buffer_set_segment_properties: + * @buffer: An #hb_buffer_t + * @props: An #hb_segment_properties_t to use + * + * Sets the segment properties of the buffer, a shortcut for calling + * hb_buffer_set_direction(), hb_buffer_set_script() and + * hb_buffer_set_language() individually. + * + * Since: 0.9.7 + **/ +void +hb_buffer_set_segment_properties (hb_buffer_t *buffer, + const hb_segment_properties_t *props) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->props = *props; +} + +/** + * hb_buffer_get_segment_properties: + * @buffer: An #hb_buffer_t + * @props: (out): The output #hb_segment_properties_t + * + * Sets @props to the #hb_segment_properties_t of @buffer. + * + * Since: 0.9.7 + **/ +void +hb_buffer_get_segment_properties (const hb_buffer_t *buffer, + hb_segment_properties_t *props) +{ + *props = buffer->props; +} + + +/** + * hb_buffer_set_flags: + * @buffer: An #hb_buffer_t + * @flags: The buffer flags to set + * + * Sets @buffer flags to @flags. See #hb_buffer_flags_t. + * + * Since: 0.9.7 + **/ +void +hb_buffer_set_flags (hb_buffer_t *buffer, + hb_buffer_flags_t flags) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->flags = flags; +} + +/** + * hb_buffer_get_flags: + * @buffer: An #hb_buffer_t + * + * Fetches the #hb_buffer_flags_t of @buffer. + * + * Return value: + * The @buffer flags + * + * Since: 0.9.7 + **/ +hb_buffer_flags_t +hb_buffer_get_flags (const hb_buffer_t *buffer) +{ + return buffer->flags; +} + +/** + * hb_buffer_set_cluster_level: + * @buffer: An #hb_buffer_t + * @cluster_level: The cluster level to set on the buffer + * + * Sets the cluster level of a buffer. The #hb_buffer_cluster_level_t + * dictates one aspect of how HarfBuzz will treat non-base characters + * during shaping. + * + * Since: 0.9.42 + **/ +void +hb_buffer_set_cluster_level (hb_buffer_t *buffer, + hb_buffer_cluster_level_t cluster_level) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->cluster_level = cluster_level; +} + +/** + * hb_buffer_get_cluster_level: + * @buffer: An #hb_buffer_t + * + * Fetches the cluster level of a buffer. The #hb_buffer_cluster_level_t + * dictates one aspect of how HarfBuzz will treat non-base characters + * during shaping. + * + * Return value: The cluster level of @buffer + * + * Since: 0.9.42 + **/ +hb_buffer_cluster_level_t +hb_buffer_get_cluster_level (const hb_buffer_t *buffer) +{ + return buffer->cluster_level; +} + + +/** + * hb_buffer_set_replacement_codepoint: + * @buffer: An #hb_buffer_t + * @replacement: the replacement #hb_codepoint_t + * + * Sets the #hb_codepoint_t that replaces invalid entries for a given encoding + * when adding text to @buffer. + * + * Default is #HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT. + * + * Since: 0.9.31 + **/ +void +hb_buffer_set_replacement_codepoint (hb_buffer_t *buffer, + hb_codepoint_t replacement) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->replacement = replacement; +} + +/** + * hb_buffer_get_replacement_codepoint: + * @buffer: An #hb_buffer_t + * + * Fetches the #hb_codepoint_t that replaces invalid entries for a given encoding + * when adding text to @buffer. + * + * Return value: + * The @buffer replacement #hb_codepoint_t + * + * Since: 0.9.31 + **/ +hb_codepoint_t +hb_buffer_get_replacement_codepoint (const hb_buffer_t *buffer) +{ + return buffer->replacement; +} + + +/** + * hb_buffer_set_invisible_glyph: + * @buffer: An #hb_buffer_t + * @invisible: the invisible #hb_codepoint_t + * + * Sets the #hb_codepoint_t that replaces invisible characters in + * the shaping result. If set to zero (default), the glyph for the + * U+0020 SPACE character is used. Otherwise, this value is used + * verbatim. + * + * Since: 2.0.0 + **/ +void +hb_buffer_set_invisible_glyph (hb_buffer_t *buffer, + hb_codepoint_t invisible) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->invisible = invisible; +} + +/** + * hb_buffer_get_invisible_glyph: + * @buffer: An #hb_buffer_t + * + * See hb_buffer_set_invisible_glyph(). + * + * Return value: + * The @buffer invisible #hb_codepoint_t + * + * Since: 2.0.0 + **/ +hb_codepoint_t +hb_buffer_get_invisible_glyph (const hb_buffer_t *buffer) +{ + return buffer->invisible; +} + +/** + * hb_buffer_set_not_found_glyph: + * @buffer: An #hb_buffer_t + * @not_found: the not-found #hb_codepoint_t + * + * Sets the #hb_codepoint_t that replaces characters not found in + * the font during shaping. + * + * The not-found glyph defaults to zero, sometimes knows as the + * ".notdef" glyph. This API allows for differentiating the two. + * + * Since: 3.1.0 + **/ +void +hb_buffer_set_not_found_glyph (hb_buffer_t *buffer, + hb_codepoint_t not_found) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->not_found = not_found; +} + +/** + * hb_buffer_get_not_found_glyph: + * @buffer: An #hb_buffer_t + * + * See hb_buffer_set_not_found_glyph(). + * + * Return value: + * The @buffer not-found #hb_codepoint_t + * + * Since: 3.1.0 + **/ +hb_codepoint_t +hb_buffer_get_not_found_glyph (const hb_buffer_t *buffer) +{ + return buffer->not_found; +} + + +/** + * hb_buffer_clear_contents: + * @buffer: An #hb_buffer_t + * + * Similar to hb_buffer_reset(), but does not clear the Unicode functions and + * the replacement code point. + * + * Since: 0.9.11 + **/ +void +hb_buffer_clear_contents (hb_buffer_t *buffer) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return; + + buffer->clear (); +} + +/** + * hb_buffer_pre_allocate: + * @buffer: An #hb_buffer_t + * @size: Number of items to pre allocate. + * + * Pre allocates memory for @buffer to fit at least @size number of items. + * + * Return value: + * `true` if @buffer memory allocation succeeded, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_buffer_pre_allocate (hb_buffer_t *buffer, unsigned int size) +{ + return buffer->ensure (size); +} + +/** + * hb_buffer_allocation_successful: + * @buffer: An #hb_buffer_t + * + * Check if allocating memory for the buffer succeeded. + * + * Return value: + * `true` if @buffer memory allocation succeeded, `false` otherwise. + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_buffer_allocation_successful (hb_buffer_t *buffer) +{ + return buffer->successful; +} + +/** + * hb_buffer_add: + * @buffer: An #hb_buffer_t + * @codepoint: A Unicode code point. + * @cluster: The cluster value of @codepoint. + * + * Appends a character with the Unicode value of @codepoint to @buffer, and + * gives it the initial cluster value of @cluster. Clusters can be any thing + * the client wants, they are usually used to refer to the index of the + * character in the input text stream and are output in + * #hb_glyph_info_t.cluster field. + * + * This function does not check the validity of @codepoint, it is up to the + * caller to ensure it is a valid Unicode code point. + * + * Since: 0.9.7 + **/ +void +hb_buffer_add (hb_buffer_t *buffer, + hb_codepoint_t codepoint, + unsigned int cluster) +{ + buffer->add (codepoint, cluster); + buffer->clear_context (1); +} + +/** + * hb_buffer_set_length: + * @buffer: An #hb_buffer_t + * @length: The new length of @buffer + * + * Similar to hb_buffer_pre_allocate(), but clears any new items added at the + * end. + * + * Return value: + * `true` if @buffer memory allocation succeeded, `false` otherwise. + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_buffer_set_length (hb_buffer_t *buffer, + unsigned int length) +{ + if (unlikely (hb_object_is_immutable (buffer))) + return length == 0; + + if (unlikely (!buffer->ensure (length))) + return false; + + /* Wipe the new space */ + if (length > buffer->len) { + hb_memset (buffer->info + buffer->len, 0, sizeof (buffer->info[0]) * (length - buffer->len)); + if (buffer->have_positions) + hb_memset (buffer->pos + buffer->len, 0, sizeof (buffer->pos[0]) * (length - buffer->len)); + } + + buffer->len = length; + + if (!length) + { + buffer->content_type = HB_BUFFER_CONTENT_TYPE_INVALID; + buffer->clear_context (0); + } + buffer->clear_context (1); + + return true; +} + +/** + * hb_buffer_get_length: + * @buffer: An #hb_buffer_t + * + * Returns the number of items in the buffer. + * + * Return value: + * The @buffer length. + * The value valid as long as buffer has not been modified. + * + * Since: 0.9.2 + **/ +unsigned int +hb_buffer_get_length (const hb_buffer_t *buffer) +{ + return buffer->len; +} + +/** + * hb_buffer_get_glyph_infos: + * @buffer: An #hb_buffer_t + * @length: (out): The output-array length. + * + * Returns @buffer glyph information array. Returned pointer + * is valid as long as @buffer contents are not modified. + * + * Return value: (transfer none) (array length=length): + * The @buffer glyph information array. + * The value valid as long as buffer has not been modified. + * + * Since: 0.9.2 + **/ +hb_glyph_info_t * +hb_buffer_get_glyph_infos (hb_buffer_t *buffer, + unsigned int *length) +{ + if (length) + *length = buffer->len; + + return (hb_glyph_info_t *) buffer->info; +} + +/** + * hb_buffer_get_glyph_positions: + * @buffer: An #hb_buffer_t + * @length: (out): The output length + * + * Returns @buffer glyph position array. Returned pointer + * is valid as long as @buffer contents are not modified. + * + * If buffer did not have positions before, the positions will be + * initialized to zeros, unless this function is called from + * within a buffer message callback (see hb_buffer_set_message_func()), + * in which case `NULL` is returned. + * + * Return value: (transfer none) (array length=length): + * The @buffer glyph position array. + * The value valid as long as buffer has not been modified. + * + * Since: 0.9.2 + **/ +hb_glyph_position_t * +hb_buffer_get_glyph_positions (hb_buffer_t *buffer, + unsigned int *length) +{ + if (length) + *length = buffer->len; + + if (!buffer->have_positions) + { + if (unlikely (buffer->message_depth)) + return nullptr; + + buffer->clear_positions (); + } + + return (hb_glyph_position_t *) buffer->pos; +} + +/** + * hb_buffer_has_positions: + * @buffer: an #hb_buffer_t. + * + * Returns whether @buffer has glyph position data. + * A buffer gains position data when hb_buffer_get_glyph_positions() is called on it, + * and cleared of position data when hb_buffer_clear_contents() is called. + * + * Return value: + * `true` if the @buffer has position array, `false` otherwise. + * + * Since: 2.7.3 + **/ +HB_EXTERN hb_bool_t +hb_buffer_has_positions (hb_buffer_t *buffer) +{ + return buffer->have_positions; +} + +/** + * hb_glyph_info_get_glyph_flags: + * @info: a #hb_glyph_info_t + * + * Returns glyph flags encoded within a #hb_glyph_info_t. + * + * Return value: + * The #hb_glyph_flags_t encoded within @info + * + * Since: 1.5.0 + **/ +hb_glyph_flags_t +(hb_glyph_info_get_glyph_flags) (const hb_glyph_info_t *info) +{ + return hb_glyph_info_get_glyph_flags (info); +} + +/** + * hb_buffer_reverse: + * @buffer: An #hb_buffer_t + * + * Reverses buffer contents. + * + * Since: 0.9.2 + **/ +void +hb_buffer_reverse (hb_buffer_t *buffer) +{ + buffer->reverse (); +} + +/** + * hb_buffer_reverse_range: + * @buffer: An #hb_buffer_t + * @start: start index + * @end: end index + * + * Reverses buffer contents between @start and @end. + * + * Since: 0.9.41 + **/ +void +hb_buffer_reverse_range (hb_buffer_t *buffer, + unsigned int start, unsigned int end) +{ + buffer->reverse_range (start, end); +} + +/** + * hb_buffer_reverse_clusters: + * @buffer: An #hb_buffer_t + * + * Reverses buffer clusters. That is, the buffer contents are + * reversed, then each cluster (consecutive items having the + * same cluster number) are reversed again. + * + * Since: 0.9.2 + **/ +void +hb_buffer_reverse_clusters (hb_buffer_t *buffer) +{ + buffer->reverse_clusters (); +} + +/** + * hb_buffer_guess_segment_properties: + * @buffer: An #hb_buffer_t + * + * Sets unset buffer segment properties based on buffer Unicode + * contents. If buffer is not empty, it must have content type + * #HB_BUFFER_CONTENT_TYPE_UNICODE. + * + * If buffer script is not set (ie. is #HB_SCRIPT_INVALID), it + * will be set to the Unicode script of the first character in + * the buffer that has a script other than #HB_SCRIPT_COMMON, + * #HB_SCRIPT_INHERITED, and #HB_SCRIPT_UNKNOWN. + * + * Next, if buffer direction is not set (ie. is #HB_DIRECTION_INVALID), + * it will be set to the natural horizontal direction of the + * buffer script as returned by hb_script_get_horizontal_direction(). + * If hb_script_get_horizontal_direction() returns #HB_DIRECTION_INVALID, + * then #HB_DIRECTION_LTR is used. + * + * Finally, if buffer language is not set (ie. is #HB_LANGUAGE_INVALID), + * it will be set to the process's default language as returned by + * hb_language_get_default(). This may change in the future by + * taking buffer script into consideration when choosing a language. + * Note that hb_language_get_default() is NOT threadsafe the first time + * it is called. See documentation for that function for details. + * + * Since: 0.9.7 + **/ +void +hb_buffer_guess_segment_properties (hb_buffer_t *buffer) +{ + buffer->guess_segment_properties (); +} + +template +static inline void +hb_buffer_add_utf (hb_buffer_t *buffer, + const typename utf_t::codepoint_t *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + typedef typename utf_t::codepoint_t T; + const hb_codepoint_t replacement = buffer->replacement; + + buffer->assert_unicode (); + + if (unlikely (hb_object_is_immutable (buffer))) + return; + + if (text_length == -1) + text_length = utf_t::strlen (text); + + if (item_length == -1) + item_length = text_length - item_offset; + + if (unlikely (item_length < 0 || + item_length > INT_MAX / 8 || + !buffer->ensure (buffer->len + item_length * sizeof (T) / 4))) + return; + + /* If buffer is empty and pre-context provided, install it. + * This check is written this way, to make sure people can + * provide pre-context in one add_utf() call, then provide + * text in a follow-up call. See: + * + * https://bugzilla.mozilla.org/show_bug.cgi?id=801410#c13 + */ + if (!buffer->len && item_offset > 0) + { + /* Add pre-context */ + buffer->clear_context (0); + const T *prev = text + item_offset; + const T *start = text; + while (start < prev && buffer->context_len[0] < buffer->CONTEXT_LENGTH) + { + hb_codepoint_t u; + prev = utf_t::prev (prev, start, &u, replacement); + buffer->context[0][buffer->context_len[0]++] = u; + } + } + + const T *next = text + item_offset; + const T *end = next + item_length; + while (next < end) + { + hb_codepoint_t u; + const T *old_next = next; + next = utf_t::next (next, end, &u, replacement); + buffer->add (u, old_next - (const T *) text); + } + + /* Add post-context */ + buffer->clear_context (1); + end = text + text_length; + while (next < end && buffer->context_len[1] < buffer->CONTEXT_LENGTH) + { + hb_codepoint_t u; + next = utf_t::next (next, end, &u, replacement); + buffer->context[1][buffer->context_len[1]++] = u; + } + + buffer->content_type = HB_BUFFER_CONTENT_TYPE_UNICODE; +} + +/** + * hb_buffer_add_utf8: + * @buffer: An #hb_buffer_t + * @text: (array length=text_length) (element-type uint8_t): An array of UTF-8 + * characters to append. + * @text_length: The length of the @text, or -1 if it is `NULL` terminated. + * @item_offset: The offset of the first character to add to the @buffer. + * @item_length: The number of characters to add to the @buffer, or -1 for the + * end of @text (assuming it is `NULL` terminated). + * + * See hb_buffer_add_codepoints(). + * + * Replaces invalid UTF-8 characters with the @buffer replacement code point, + * see hb_buffer_set_replacement_codepoint(). + * + * Since: 0.9.2 + **/ +void +hb_buffer_add_utf8 (hb_buffer_t *buffer, + const char *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + hb_buffer_add_utf (buffer, (const uint8_t *) text, text_length, item_offset, item_length); +} + +/** + * hb_buffer_add_utf16: + * @buffer: An #hb_buffer_t + * @text: (array length=text_length): An array of UTF-16 characters to append + * @text_length: The length of the @text, or -1 if it is `NULL` terminated + * @item_offset: The offset of the first character to add to the @buffer + * @item_length: The number of characters to add to the @buffer, or -1 for the + * end of @text (assuming it is `NULL` terminated) + * + * See hb_buffer_add_codepoints(). + * + * Replaces invalid UTF-16 characters with the @buffer replacement code point, + * see hb_buffer_set_replacement_codepoint(). + * + * Since: 0.9.2 + **/ +void +hb_buffer_add_utf16 (hb_buffer_t *buffer, + const uint16_t *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + hb_buffer_add_utf (buffer, text, text_length, item_offset, item_length); +} + +/** + * hb_buffer_add_utf32: + * @buffer: An #hb_buffer_t + * @text: (array length=text_length): An array of UTF-32 characters to append + * @text_length: The length of the @text, or -1 if it is `NULL` terminated + * @item_offset: The offset of the first character to add to the @buffer + * @item_length: The number of characters to add to the @buffer, or -1 for the + * end of @text (assuming it is `NULL` terminated) + * + * See hb_buffer_add_codepoints(). + * + * Replaces invalid UTF-32 characters with the @buffer replacement code point, + * see hb_buffer_set_replacement_codepoint(). + * + * Since: 0.9.2 + **/ +void +hb_buffer_add_utf32 (hb_buffer_t *buffer, + const uint32_t *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + hb_buffer_add_utf (buffer, text, text_length, item_offset, item_length); +} + +/** + * hb_buffer_add_latin1: + * @buffer: An #hb_buffer_t + * @text: (array length=text_length) (element-type uint8_t): an array of UTF-8 + * characters to append + * @text_length: the length of the @text, or -1 if it is `NULL` terminated + * @item_offset: the offset of the first character to add to the @buffer + * @item_length: the number of characters to add to the @buffer, or -1 for the + * end of @text (assuming it is `NULL` terminated) + * + * Similar to hb_buffer_add_codepoints(), but allows only access to first 256 + * Unicode code points that can fit in 8-bit strings. + * + * Has nothing to do with non-Unicode Latin-1 encoding. + * + * Since: 0.9.39 + **/ +void +hb_buffer_add_latin1 (hb_buffer_t *buffer, + const uint8_t *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + hb_buffer_add_utf (buffer, text, text_length, item_offset, item_length); +} + +/** + * hb_buffer_add_codepoints: + * @buffer: a #hb_buffer_t to append characters to. + * @text: (array length=text_length): an array of Unicode code points to append. + * @text_length: the length of the @text, or -1 if it is `NULL` terminated. + * @item_offset: the offset of the first code point to add to the @buffer. + * @item_length: the number of code points to add to the @buffer, or -1 for the + * end of @text (assuming it is `NULL` terminated). + * + * Appends characters from @text array to @buffer. The @item_offset is the + * position of the first character from @text that will be appended, and + * @item_length is the number of character. When shaping part of a larger text + * (e.g. a run of text from a paragraph), instead of passing just the substring + * corresponding to the run, it is preferable to pass the whole + * paragraph and specify the run start and length as @item_offset and + * @item_length, respectively, to give HarfBuzz the full context to be able, + * for example, to do cross-run Arabic shaping or properly handle combining + * marks at stat of run. + * + * This function does not check the validity of @text, it is up to the caller + * to ensure it contains a valid Unicode scalar values. In contrast, + * hb_buffer_add_utf32() can be used that takes similar input but performs + * sanity-check on the input. + * + * Since: 0.9.31 + **/ +void +hb_buffer_add_codepoints (hb_buffer_t *buffer, + const hb_codepoint_t *text, + int text_length, + unsigned int item_offset, + int item_length) +{ + hb_buffer_add_utf (buffer, text, text_length, item_offset, item_length); +} + + +/** + * hb_buffer_append: + * @buffer: An #hb_buffer_t + * @source: source #hb_buffer_t + * @start: start index into source buffer to copy. Use 0 to copy from start of buffer. + * @end: end index into source buffer to copy. Use @HB_FEATURE_GLOBAL_END to copy to end of buffer. + * + * Append (part of) contents of another buffer to this buffer. + * + * Since: 1.5.0 + **/ +HB_EXTERN void +hb_buffer_append (hb_buffer_t *buffer, + const hb_buffer_t *source, + unsigned int start, + unsigned int end) +{ + assert (!buffer->have_output && !source->have_output); + assert (buffer->have_positions == source->have_positions || + !buffer->len || !source->len); + assert (buffer->content_type == source->content_type || + !buffer->len || !source->len); + + if (end > source->len) + end = source->len; + if (start > end) + start = end; + if (start == end) + return; + + if (buffer->len + (end - start) < buffer->len) /* Overflows. */ + { + buffer->successful = false; + return; + } + + unsigned int orig_len = buffer->len; + hb_buffer_set_length (buffer, buffer->len + (end - start)); + if (unlikely (!buffer->successful)) + return; + + if (!orig_len) + buffer->content_type = source->content_type; + if (!buffer->have_positions && source->have_positions) + buffer->clear_positions (); + + hb_segment_properties_overlay (&buffer->props, &source->props); + + hb_memcpy (buffer->info + orig_len, source->info + start, (end - start) * sizeof (buffer->info[0])); + if (buffer->have_positions) + hb_memcpy (buffer->pos + orig_len, source->pos + start, (end - start) * sizeof (buffer->pos[0])); + + if (source->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE) + { + /* See similar logic in add_utf. */ + + /* pre-context */ + if (!orig_len && start + source->context_len[0] > 0) + { + buffer->clear_context (0); + while (start > 0 && buffer->context_len[0] < buffer->CONTEXT_LENGTH) + buffer->context[0][buffer->context_len[0]++] = source->info[--start].codepoint; + for (auto i = 0u; i < source->context_len[0] && buffer->context_len[0] < buffer->CONTEXT_LENGTH; i++) + buffer->context[0][buffer->context_len[0]++] = source->context[0][i]; + } + + /* post-context */ + buffer->clear_context (1); + while (end < source->len && buffer->context_len[1] < buffer->CONTEXT_LENGTH) + buffer->context[1][buffer->context_len[1]++] = source->info[end++].codepoint; + for (auto i = 0u; i < source->context_len[1] && buffer->context_len[1] < buffer->CONTEXT_LENGTH; i++) + buffer->context[1][buffer->context_len[1]++] = source->context[1][i]; + } +} + + +static int +compare_info_codepoint (const hb_glyph_info_t *pa, + const hb_glyph_info_t *pb) +{ + return (int) pb->codepoint - (int) pa->codepoint; +} + +static inline void +normalize_glyphs_cluster (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + bool backward) +{ + hb_glyph_position_t *pos = buffer->pos; + + /* Total cluster advance */ + hb_position_t total_x_advance = 0, total_y_advance = 0; + for (unsigned int i = start; i < end; i++) + { + total_x_advance += pos[i].x_advance; + total_y_advance += pos[i].y_advance; + } + + hb_position_t x_advance = 0, y_advance = 0; + for (unsigned int i = start; i < end; i++) + { + pos[i].x_offset += x_advance; + pos[i].y_offset += y_advance; + + x_advance += pos[i].x_advance; + y_advance += pos[i].y_advance; + + pos[i].x_advance = 0; + pos[i].y_advance = 0; + } + + if (backward) + { + /* Transfer all cluster advance to the last glyph. */ + pos[end - 1].x_advance = total_x_advance; + pos[end - 1].y_advance = total_y_advance; + + hb_stable_sort (buffer->info + start, end - start - 1, compare_info_codepoint, buffer->pos + start); + } else { + /* Transfer all cluster advance to the first glyph. */ + pos[start].x_advance += total_x_advance; + pos[start].y_advance += total_y_advance; + for (unsigned int i = start + 1; i < end; i++) { + pos[i].x_offset -= total_x_advance; + pos[i].y_offset -= total_y_advance; + } + hb_stable_sort (buffer->info + start + 1, end - start - 1, compare_info_codepoint, buffer->pos + start + 1); + } +} + +/** + * hb_buffer_normalize_glyphs: + * @buffer: An #hb_buffer_t + * + * Reorders a glyph buffer to have canonical in-cluster glyph order / position. + * The resulting clusters should behave identical to pre-reordering clusters. + * + * This has nothing to do with Unicode normalization. + * + * Since: 0.9.2 + **/ +void +hb_buffer_normalize_glyphs (hb_buffer_t *buffer) +{ + assert (buffer->have_positions); + + buffer->assert_glyphs (); + + bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction); + + foreach_cluster (buffer, start, end) + normalize_glyphs_cluster (buffer, start, end, backward); +} + +void +hb_buffer_t::sort (unsigned int start, unsigned int end, int(*compar)(const hb_glyph_info_t *, const hb_glyph_info_t *)) +{ + assert (!have_positions); + for (unsigned int i = start + 1; i < end; i++) + { + unsigned int j = i; + while (j > start && compar (&info[j - 1], &info[i]) > 0) + j--; + if (i == j) + continue; + /* Move item i to occupy place for item j, shift what's in between. */ + merge_clusters (j, i + 1); + { + hb_glyph_info_t t = info[i]; + memmove (&info[j + 1], &info[j], (i - j) * sizeof (hb_glyph_info_t)); + info[j] = t; + } + } +} + + +/* + * Comparing buffers. + */ + +/** + * hb_buffer_diff: + * @buffer: a buffer. + * @reference: other buffer to compare to. + * @dottedcircle_glyph: glyph id of U+25CC DOTTED CIRCLE, or (hb_codepont_t) -1. + * @position_fuzz: allowed absolute difference in position values. + * + * If dottedcircle_glyph is (hb_codepoint_t) -1 then #HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT + * and #HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT are never returned. This should be used by most + * callers if just comparing two buffers is needed. + * + * Since: 1.5.0 + **/ +hb_buffer_diff_flags_t +hb_buffer_diff (hb_buffer_t *buffer, + hb_buffer_t *reference, + hb_codepoint_t dottedcircle_glyph, + unsigned int position_fuzz) +{ + if (buffer->content_type != reference->content_type && buffer->len && reference->len) + return HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH; + + hb_buffer_diff_flags_t result = HB_BUFFER_DIFF_FLAG_EQUAL; + bool contains = dottedcircle_glyph != (hb_codepoint_t) -1; + + unsigned int count = reference->len; + + if (buffer->len != count) + { + /* + * we can't compare glyph-by-glyph, but we do want to know if there + * are .notdef or dottedcircle glyphs present in the reference buffer + */ + const hb_glyph_info_t *info = reference->info; + unsigned int i; + for (i = 0; i < count; i++) + { + if (contains && info[i].codepoint == dottedcircle_glyph) + result |= HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT; + if (contains && info[i].codepoint == 0) + result |= HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT; + } + result |= HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH; + return hb_buffer_diff_flags_t (result); + } + + if (!count) + return hb_buffer_diff_flags_t (result); + + const hb_glyph_info_t *buf_info = buffer->info; + const hb_glyph_info_t *ref_info = reference->info; + for (unsigned int i = 0; i < count; i++) + { + if (buf_info->codepoint != ref_info->codepoint) + result |= HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH; + if (buf_info->cluster != ref_info->cluster) + result |= HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH; + if ((buf_info->mask ^ ref_info->mask) & HB_GLYPH_FLAG_DEFINED) + result |= HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH; + if (contains && ref_info->codepoint == dottedcircle_glyph) + result |= HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT; + if (contains && ref_info->codepoint == 0) + result |= HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT; + buf_info++; + ref_info++; + } + + if (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS) + { + assert (buffer->have_positions); + const hb_glyph_position_t *buf_pos = buffer->pos; + const hb_glyph_position_t *ref_pos = reference->pos; + for (unsigned int i = 0; i < count; i++) + { + if ((unsigned int) abs (buf_pos->x_advance - ref_pos->x_advance) > position_fuzz || + (unsigned int) abs (buf_pos->y_advance - ref_pos->y_advance) > position_fuzz || + (unsigned int) abs (buf_pos->x_offset - ref_pos->x_offset) > position_fuzz || + (unsigned int) abs (buf_pos->y_offset - ref_pos->y_offset) > position_fuzz) + { + result |= HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH; + break; + } + buf_pos++; + ref_pos++; + } + } + + return result; +} + + +/* + * Debugging. + */ + +#ifndef HB_NO_BUFFER_MESSAGE +/** + * hb_buffer_set_message_func: + * @buffer: An #hb_buffer_t + * @func: (closure user_data) (destroy destroy) (scope notified): Callback function + * @user_data: (nullable): Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_buffer_message_func_t. + * + * Since: 1.1.3 + **/ +void +hb_buffer_set_message_func (hb_buffer_t *buffer, + hb_buffer_message_func_t func, + void *user_data, hb_destroy_func_t destroy) +{ + if (unlikely (hb_object_is_immutable (buffer))) + { + if (destroy) + destroy (user_data); + return; + } + + if (buffer->message_destroy) + buffer->message_destroy (buffer->message_data); + + if (func) { + buffer->message_func = func; + buffer->message_data = user_data; + buffer->message_destroy = destroy; + } else { + buffer->message_func = nullptr; + buffer->message_data = nullptr; + buffer->message_destroy = nullptr; + } +} +bool +hb_buffer_t::message_impl (hb_font_t *font, const char *fmt, va_list ap) +{ + assert (!have_output || (out_info == info && out_len == idx)); + + message_depth++; + + char buf[100]; + vsnprintf (buf, sizeof (buf), fmt, ap); + bool ret = (bool) this->message_func (this, font, buf, this->message_data); + + message_depth--; + + return ret; +} +#endif diff --git a/gfx/harfbuzz/src/hb-buffer.h b/gfx/harfbuzz/src/hb-buffer.h new file mode 100644 index 0000000000..bff78543c8 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer.h @@ -0,0 +1,799 @@ +/* + * Copyright © 1998-2004 David Turner and Werner Lemberg + * Copyright © 2004,2007,2009 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Owen Taylor, Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_BUFFER_H +#define HB_BUFFER_H + +#include "hb-common.h" +#include "hb-unicode.h" +#include "hb-font.h" + +HB_BEGIN_DECLS + +/** + * hb_glyph_info_t: + * @codepoint: either a Unicode code point (before shaping) or a glyph index + * (after shaping). + * @cluster: the index of the character in the original text that corresponds + * to this #hb_glyph_info_t, or whatever the client passes to + * hb_buffer_add(). More than one #hb_glyph_info_t can have the same + * @cluster value, if they resulted from the same character (e.g. one + * to many glyph substitution), and when more than one character gets + * merged in the same glyph (e.g. many to one glyph substitution) the + * #hb_glyph_info_t will have the smallest cluster value of them. + * By default some characters are merged into the same cluster + * (e.g. combining marks have the same cluster as their bases) + * even if they are separate glyphs, hb_buffer_set_cluster_level() + * allow selecting more fine-grained cluster handling. + * + * The #hb_glyph_info_t is the structure that holds information about the + * glyphs and their relation to input text. + */ +typedef struct hb_glyph_info_t { + hb_codepoint_t codepoint; + /*< private >*/ + hb_mask_t mask; + /*< public >*/ + uint32_t cluster; + + /*< private >*/ + hb_var_int_t var1; + hb_var_int_t var2; +} hb_glyph_info_t; + +/** + * hb_glyph_flags_t: + * @HB_GLYPH_FLAG_UNSAFE_TO_BREAK: Indicates that if input text is broken at the + * beginning of the cluster this glyph is part of, + * then both sides need to be re-shaped, as the + * result might be different. + * On the flip side, it means that when this + * flag is not present, then it is safe to break + * the glyph-run at the beginning of this + * cluster, and the two sides will represent the + * exact same result one would get if breaking + * input text at the beginning of this cluster + * and shaping the two sides separately. + * This can be used to optimize paragraph + * layout, by avoiding re-shaping of each line + * after line-breaking. + * @HB_GLYPH_FLAG_UNSAFE_TO_CONCAT: Indicates that if input text is changed on one + * side of the beginning of the cluster this glyph + * is part of, then the shaping results for the + * other side might change. + * Note that the absence of this flag will NOT by + * itself mean that it IS safe to concat text. + * Only two pieces of text both of which clear of + * this flag can be concatenated safely. + * This can be used to optimize paragraph + * layout, by avoiding re-shaping of each line + * after line-breaking, by limiting the + * reshaping to a small piece around the + * breaking positin only, even if the breaking + * position carries the + * #HB_GLYPH_FLAG_UNSAFE_TO_BREAK or when + * hyphenation or other text transformation + * happens at line-break position, in the following + * way: + * 1. Iterate back from the line-break position + * until the first cluster start position that is + * NOT unsafe-to-concat, 2. shape the segment from + * there till the end of line, 3. check whether the + * resulting glyph-run also is clear of the + * unsafe-to-concat at its start-of-text position; + * if it is, just splice it into place and the line + * is shaped; If not, move on to a position further + * back that is clear of unsafe-to-concat and retry + * from there, and repeat. + * At the start of next line a similar algorithm can + * be implemented. That is: 1. Iterate forward from + * the line-break position until the first cluster + * start position that is NOT unsafe-to-concat, 2. + * shape the segment from beginning of the line to + * that position, 3. check whether the resulting + * glyph-run also is clear of the unsafe-to-concat + * at its end-of-text position; if it is, just splice + * it into place and the beginning is shaped; If not, + * move on to a position further forward that is clear + * of unsafe-to-concat and retry up to there, and repeat. + * A slight complication will arise in the + * implementation of the algorithm above, + * because while our buffer API has a way to + * return flags for position corresponding to + * start-of-text, there is currently no position + * corresponding to end-of-text. This limitation + * can be alleviated by shaping more text than needed + * and looking for unsafe-to-concat flag within text + * clusters. + * The #HB_GLYPH_FLAG_UNSAFE_TO_BREAK flag will + * always imply this flag. + * To use this flag, you must enable the buffer flag + * @HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT during + * shaping, otherwise the buffer flag will not be + * reliably produced. + * Since: 4.0.0 + * @HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL: In scripts that use elongation (Arabic, + Mongolian, Syriac, etc.), this flag signifies + that it is safe to insert a U+0640 TATWEEL + character before this cluster for elongation. + This flag does not determine the + script-specific elongation places, but only + when it is safe to do the elongation without + interrupting text shaping. + Since: 5.1.0 + * @HB_GLYPH_FLAG_DEFINED: All the currently defined flags. + * + * Flags for #hb_glyph_info_t. + * + * Since: 1.5.0 + */ +typedef enum { /*< flags >*/ + HB_GLYPH_FLAG_UNSAFE_TO_BREAK = 0x00000001, + HB_GLYPH_FLAG_UNSAFE_TO_CONCAT = 0x00000002, + HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL = 0x00000004, + + HB_GLYPH_FLAG_DEFINED = 0x00000007 /* OR of all defined flags */ +} hb_glyph_flags_t; + +HB_EXTERN hb_glyph_flags_t +hb_glyph_info_get_glyph_flags (const hb_glyph_info_t *info); + +#define hb_glyph_info_get_glyph_flags(info) \ + ((hb_glyph_flags_t) ((unsigned int) (info)->mask & HB_GLYPH_FLAG_DEFINED)) + + +/** + * hb_glyph_position_t: + * @x_advance: how much the line advances after drawing this glyph when setting + * text in horizontal direction. + * @y_advance: how much the line advances after drawing this glyph when setting + * text in vertical direction. + * @x_offset: how much the glyph moves on the X-axis before drawing it, this + * should not affect how much the line advances. + * @y_offset: how much the glyph moves on the Y-axis before drawing it, this + * should not affect how much the line advances. + * + * The #hb_glyph_position_t is the structure that holds the positions of the + * glyph in both horizontal and vertical directions. All positions in + * #hb_glyph_position_t are relative to the current point. + * + */ +typedef struct hb_glyph_position_t { + hb_position_t x_advance; + hb_position_t y_advance; + hb_position_t x_offset; + hb_position_t y_offset; + + /*< private >*/ + hb_var_int_t var; +} hb_glyph_position_t; + +/** + * hb_segment_properties_t: + * @direction: the #hb_direction_t of the buffer, see hb_buffer_set_direction(). + * @script: the #hb_script_t of the buffer, see hb_buffer_set_script(). + * @language: the #hb_language_t of the buffer, see hb_buffer_set_language(). + * + * The structure that holds various text properties of an #hb_buffer_t. Can be + * set and retrieved using hb_buffer_set_segment_properties() and + * hb_buffer_get_segment_properties(), respectively. + */ +typedef struct hb_segment_properties_t { + hb_direction_t direction; + hb_script_t script; + hb_language_t language; + /*< private >*/ + void *reserved1; + void *reserved2; +} hb_segment_properties_t; + +/** + * HB_SEGMENT_PROPERTIES_DEFAULT: + * + * The default #hb_segment_properties_t of of freshly created #hb_buffer_t. + */ +#define HB_SEGMENT_PROPERTIES_DEFAULT {HB_DIRECTION_INVALID, \ + HB_SCRIPT_INVALID, \ + HB_LANGUAGE_INVALID, \ + (void *) 0, \ + (void *) 0} + +HB_EXTERN hb_bool_t +hb_segment_properties_equal (const hb_segment_properties_t *a, + const hb_segment_properties_t *b); + +HB_EXTERN unsigned int +hb_segment_properties_hash (const hb_segment_properties_t *p); + +HB_EXTERN void +hb_segment_properties_overlay (hb_segment_properties_t *p, + const hb_segment_properties_t *src); + + +/** + * hb_buffer_t: + * + * The main structure holding the input text and its properties before shaping, + * and output glyphs and their information after shaping. + */ + +typedef struct hb_buffer_t hb_buffer_t; + +HB_EXTERN hb_buffer_t * +hb_buffer_create (void); + +HB_EXTERN hb_buffer_t * +hb_buffer_create_similar (const hb_buffer_t *src); + +HB_EXTERN void +hb_buffer_reset (hb_buffer_t *buffer); + + +HB_EXTERN hb_buffer_t * +hb_buffer_get_empty (void); + +HB_EXTERN hb_buffer_t * +hb_buffer_reference (hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_destroy (hb_buffer_t *buffer); + +HB_EXTERN hb_bool_t +hb_buffer_set_user_data (hb_buffer_t *buffer, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + +HB_EXTERN void * +hb_buffer_get_user_data (const hb_buffer_t *buffer, + hb_user_data_key_t *key); + + +/** + * hb_buffer_content_type_t: + * @HB_BUFFER_CONTENT_TYPE_INVALID: Initial value for new buffer. + * @HB_BUFFER_CONTENT_TYPE_UNICODE: The buffer contains input characters (before shaping). + * @HB_BUFFER_CONTENT_TYPE_GLYPHS: The buffer contains output glyphs (after shaping). + * + * The type of #hb_buffer_t contents. + */ +typedef enum { + HB_BUFFER_CONTENT_TYPE_INVALID = 0, + HB_BUFFER_CONTENT_TYPE_UNICODE, + HB_BUFFER_CONTENT_TYPE_GLYPHS +} hb_buffer_content_type_t; + +HB_EXTERN void +hb_buffer_set_content_type (hb_buffer_t *buffer, + hb_buffer_content_type_t content_type); + +HB_EXTERN hb_buffer_content_type_t +hb_buffer_get_content_type (const hb_buffer_t *buffer); + + +HB_EXTERN void +hb_buffer_set_unicode_funcs (hb_buffer_t *buffer, + hb_unicode_funcs_t *unicode_funcs); + +HB_EXTERN hb_unicode_funcs_t * +hb_buffer_get_unicode_funcs (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_direction (hb_buffer_t *buffer, + hb_direction_t direction); + +HB_EXTERN hb_direction_t +hb_buffer_get_direction (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_script (hb_buffer_t *buffer, + hb_script_t script); + +HB_EXTERN hb_script_t +hb_buffer_get_script (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_language (hb_buffer_t *buffer, + hb_language_t language); + + +HB_EXTERN hb_language_t +hb_buffer_get_language (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_segment_properties (hb_buffer_t *buffer, + const hb_segment_properties_t *props); + +HB_EXTERN void +hb_buffer_get_segment_properties (const hb_buffer_t *buffer, + hb_segment_properties_t *props); + +HB_EXTERN void +hb_buffer_guess_segment_properties (hb_buffer_t *buffer); + + +/** + * hb_buffer_flags_t: + * @HB_BUFFER_FLAG_DEFAULT: the default buffer flag. + * @HB_BUFFER_FLAG_BOT: flag indicating that special handling of the beginning + * of text paragraph can be applied to this buffer. Should usually + * be set, unless you are passing to the buffer only part + * of the text without the full context. + * @HB_BUFFER_FLAG_EOT: flag indicating that special handling of the end of text + * paragraph can be applied to this buffer, similar to + * @HB_BUFFER_FLAG_BOT. + * @HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES: + * flag indication that character with Default_Ignorable + * Unicode property should use the corresponding glyph + * from the font, instead of hiding them (done by + * replacing them with the space glyph and zeroing the + * advance width.) This flag takes precedence over + * @HB_BUFFER_FLAG_REMOVE_DEFAULT_IGNORABLES. + * @HB_BUFFER_FLAG_REMOVE_DEFAULT_IGNORABLES: + * flag indication that character with Default_Ignorable + * Unicode property should be removed from glyph string + * instead of hiding them (done by replacing them with the + * space glyph and zeroing the advance width.) + * @HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES takes + * precedence over this flag. Since: 1.8.0 + * @HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE: + * flag indicating that a dotted circle should + * not be inserted in the rendering of incorrect + * character sequences (such at <0905 093E>). Since: 2.4.0 + * @HB_BUFFER_FLAG_VERIFY: + * flag indicating that the hb_shape() call and its variants + * should perform various verification processes on the results + * of the shaping operation on the buffer. If the verification + * fails, then either a buffer message is sent, if a message + * handler is installed on the buffer, or a message is written + * to standard error. In either case, the shaping result might + * be modified to show the failed output. Since: 3.4.0 + * @HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT: + * flag indicating that the @HB_GLYPH_FLAG_UNSAFE_TO_CONCAT + * glyph-flag should be produced by the shaper. By default + * it will not be produced since it incurs a cost. Since: 4.0.0 + * @HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL: + * flag indicating that the @HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL + * glyph-flag should be produced by the shaper. By default + * it will not be produced. Since: 5.1.0 + * @HB_BUFFER_FLAG_DEFINED: All currently defined flags: Since: 4.4.0 + * + * Flags for #hb_buffer_t. + * + * Since: 0.9.20 + */ +typedef enum { /*< flags >*/ + HB_BUFFER_FLAG_DEFAULT = 0x00000000u, + HB_BUFFER_FLAG_BOT = 0x00000001u, /* Beginning-of-text */ + HB_BUFFER_FLAG_EOT = 0x00000002u, /* End-of-text */ + HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES = 0x00000004u, + HB_BUFFER_FLAG_REMOVE_DEFAULT_IGNORABLES = 0x00000008u, + HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE = 0x00000010u, + HB_BUFFER_FLAG_VERIFY = 0x00000020u, + HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT = 0x00000040u, + HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL = 0x00000080u, + + HB_BUFFER_FLAG_DEFINED = 0x000000FFu +} hb_buffer_flags_t; + +HB_EXTERN void +hb_buffer_set_flags (hb_buffer_t *buffer, + hb_buffer_flags_t flags); + +HB_EXTERN hb_buffer_flags_t +hb_buffer_get_flags (const hb_buffer_t *buffer); + +/** + * hb_buffer_cluster_level_t: + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES: Return cluster values grouped by graphemes into + * monotone order. + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS: Return cluster values grouped into monotone order. + * @HB_BUFFER_CLUSTER_LEVEL_CHARACTERS: Don't group cluster values. + * @HB_BUFFER_CLUSTER_LEVEL_DEFAULT: Default cluster level, + * equal to @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES. + * + * Data type for holding HarfBuzz's clustering behavior options. The cluster level + * dictates one aspect of how HarfBuzz will treat non-base characters + * during shaping. + * + * In @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES, non-base + * characters are merged into the cluster of the base character that precedes them. + * + * In @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS, non-base characters are initially + * assigned their own cluster values, which are not merged into preceding base + * clusters. This allows HarfBuzz to perform additional operations like reorder + * sequences of adjacent marks. + * + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES is the default, because it maintains + * backward compatibility with older versions of HarfBuzz. New client programs that + * do not need to maintain such backward compatibility are recommended to use + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS instead of the default. + * + * Since: 0.9.42 + */ +typedef enum { + HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES = 0, + HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS = 1, + HB_BUFFER_CLUSTER_LEVEL_CHARACTERS = 2, + HB_BUFFER_CLUSTER_LEVEL_DEFAULT = HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES +} hb_buffer_cluster_level_t; + +HB_EXTERN void +hb_buffer_set_cluster_level (hb_buffer_t *buffer, + hb_buffer_cluster_level_t cluster_level); + +HB_EXTERN hb_buffer_cluster_level_t +hb_buffer_get_cluster_level (const hb_buffer_t *buffer); + +/** + * HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT: + * + * The default code point for replacing invalid characters in a given encoding. + * Set to U+FFFD REPLACEMENT CHARACTER. + * + * Since: 0.9.31 + */ +#define HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT 0xFFFDu + +HB_EXTERN void +hb_buffer_set_replacement_codepoint (hb_buffer_t *buffer, + hb_codepoint_t replacement); + +HB_EXTERN hb_codepoint_t +hb_buffer_get_replacement_codepoint (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_invisible_glyph (hb_buffer_t *buffer, + hb_codepoint_t invisible); + +HB_EXTERN hb_codepoint_t +hb_buffer_get_invisible_glyph (const hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_set_not_found_glyph (hb_buffer_t *buffer, + hb_codepoint_t not_found); + +HB_EXTERN hb_codepoint_t +hb_buffer_get_not_found_glyph (const hb_buffer_t *buffer); + + +/* + * Content API. + */ + +HB_EXTERN void +hb_buffer_clear_contents (hb_buffer_t *buffer); + +HB_EXTERN hb_bool_t +hb_buffer_pre_allocate (hb_buffer_t *buffer, + unsigned int size); + + +HB_EXTERN hb_bool_t +hb_buffer_allocation_successful (hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_reverse (hb_buffer_t *buffer); + +HB_EXTERN void +hb_buffer_reverse_range (hb_buffer_t *buffer, + unsigned int start, unsigned int end); + +HB_EXTERN void +hb_buffer_reverse_clusters (hb_buffer_t *buffer); + + +/* Filling the buffer in */ + +HB_EXTERN void +hb_buffer_add (hb_buffer_t *buffer, + hb_codepoint_t codepoint, + unsigned int cluster); + +HB_EXTERN void +hb_buffer_add_utf8 (hb_buffer_t *buffer, + const char *text, + int text_length, + unsigned int item_offset, + int item_length); + +HB_EXTERN void +hb_buffer_add_utf16 (hb_buffer_t *buffer, + const uint16_t *text, + int text_length, + unsigned int item_offset, + int item_length); + +HB_EXTERN void +hb_buffer_add_utf32 (hb_buffer_t *buffer, + const uint32_t *text, + int text_length, + unsigned int item_offset, + int item_length); + +HB_EXTERN void +hb_buffer_add_latin1 (hb_buffer_t *buffer, + const uint8_t *text, + int text_length, + unsigned int item_offset, + int item_length); + +HB_EXTERN void +hb_buffer_add_codepoints (hb_buffer_t *buffer, + const hb_codepoint_t *text, + int text_length, + unsigned int item_offset, + int item_length); + +HB_EXTERN void +hb_buffer_append (hb_buffer_t *buffer, + const hb_buffer_t *source, + unsigned int start, + unsigned int end); + +HB_EXTERN hb_bool_t +hb_buffer_set_length (hb_buffer_t *buffer, + unsigned int length); + +HB_EXTERN unsigned int +hb_buffer_get_length (const hb_buffer_t *buffer); + +/* Getting glyphs out of the buffer */ + +HB_EXTERN hb_glyph_info_t * +hb_buffer_get_glyph_infos (hb_buffer_t *buffer, + unsigned int *length); + +HB_EXTERN hb_glyph_position_t * +hb_buffer_get_glyph_positions (hb_buffer_t *buffer, + unsigned int *length); + +HB_EXTERN hb_bool_t +hb_buffer_has_positions (hb_buffer_t *buffer); + + +HB_EXTERN void +hb_buffer_normalize_glyphs (hb_buffer_t *buffer); + + +/* + * Serialize + */ + +/** + * hb_buffer_serialize_flags_t: + * @HB_BUFFER_SERIALIZE_FLAG_DEFAULT: serialize glyph names, clusters and positions. + * @HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS: do not serialize glyph cluster. + * @HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS: do not serialize glyph position information. + * @HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES: do no serialize glyph name. + * @HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS: serialize glyph extents. + * @HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS: serialize glyph flags. Since: 1.5.0 + * @HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES: do not serialize glyph advances, + * glyph offsets will reflect absolute glyph positions. Since: 1.8.0 + * @HB_BUFFER_SERIALIZE_FLAG_DEFINED: All currently defined flags. Since: 4.4.0 + * + * Flags that control what glyph information are serialized in hb_buffer_serialize_glyphs(). + * + * Since: 0.9.20 + */ +typedef enum { /*< flags >*/ + HB_BUFFER_SERIALIZE_FLAG_DEFAULT = 0x00000000u, + HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS = 0x00000001u, + HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS = 0x00000002u, + HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES = 0x00000004u, + HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS = 0x00000008u, + HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS = 0x00000010u, + HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES = 0x00000020u, + + HB_BUFFER_SERIALIZE_FLAG_DEFINED = 0x0000003Fu +} hb_buffer_serialize_flags_t; + +/** + * hb_buffer_serialize_format_t: + * @HB_BUFFER_SERIALIZE_FORMAT_TEXT: a human-readable, plain text format. + * @HB_BUFFER_SERIALIZE_FORMAT_JSON: a machine-readable JSON format. + * @HB_BUFFER_SERIALIZE_FORMAT_INVALID: invalid format. + * + * The buffer serialization and de-serialization format used in + * hb_buffer_serialize_glyphs() and hb_buffer_deserialize_glyphs(). + * + * Since: 0.9.2 + */ +typedef enum { + HB_BUFFER_SERIALIZE_FORMAT_TEXT = HB_TAG('T','E','X','T'), + HB_BUFFER_SERIALIZE_FORMAT_JSON = HB_TAG('J','S','O','N'), + HB_BUFFER_SERIALIZE_FORMAT_INVALID = HB_TAG_NONE +} hb_buffer_serialize_format_t; + +HB_EXTERN hb_buffer_serialize_format_t +hb_buffer_serialize_format_from_string (const char *str, int len); + +HB_EXTERN const char * +hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format); + +HB_EXTERN const char ** +hb_buffer_serialize_list_formats (void); + +HB_EXTERN unsigned int +hb_buffer_serialize_glyphs (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags); + +HB_EXTERN unsigned int +hb_buffer_serialize_unicode (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags); + +HB_EXTERN unsigned int +hb_buffer_serialize (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags); + +HB_EXTERN hb_bool_t +hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, + const char *buf, + int buf_len, + const char **end_ptr, + hb_font_t *font, + hb_buffer_serialize_format_t format); + +HB_EXTERN hb_bool_t +hb_buffer_deserialize_unicode (hb_buffer_t *buffer, + const char *buf, + int buf_len, + const char **end_ptr, + hb_buffer_serialize_format_t format); + + + +/* + * Compare buffers + */ + +/** + * hb_buffer_diff_flags_t: + * @HB_BUFFER_DIFF_FLAG_EQUAL: equal buffers. + * @HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH: buffers with different + * #hb_buffer_content_type_t. + * @HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH: buffers with differing length. + * @HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT: `.notdef` glyph is present in the + * reference buffer. + * @HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT: dotted circle glyph is present + * in the reference buffer. + * @HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH: difference in #hb_glyph_info_t.codepoint + * @HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH: difference in #hb_glyph_info_t.cluster + * @HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH: difference in #hb_glyph_flags_t. + * @HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH: difference in #hb_glyph_position_t. + * + * Flags from comparing two #hb_buffer_t's. + * + * Buffer with different #hb_buffer_content_type_t cannot be meaningfully + * compared in any further detail. + * + * For buffers with differing length, the per-glyph comparison is not + * attempted, though we do still scan reference buffer for dotted circle and + * `.notdef` glyphs. + * + * If the buffers have the same length, we compare them glyph-by-glyph and + * report which aspect(s) of the glyph info/position are different. + * + * Since: 1.5.0 + */ +typedef enum { /*< flags >*/ + HB_BUFFER_DIFF_FLAG_EQUAL = 0x0000, + + /* Buffers with different content_type cannot be meaningfully compared + * in any further detail. */ + HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH = 0x0001, + + /* For buffers with differing length, the per-glyph comparison is not + * attempted, though we do still scan reference for dottedcircle / .notdef + * glyphs. */ + HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH = 0x0002, + + /* We want to know if dottedcircle / .notdef glyphs are present in the + * reference, as we may not care so much about other differences in this + * case. */ + HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT = 0x0004, + HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT = 0x0008, + + /* If the buffers have the same length, we compare them glyph-by-glyph + * and report which aspect(s) of the glyph info/position are different. */ + HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH = 0x0010, + HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH = 0x0020, + HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH = 0x0040, + HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH = 0x0080 + +} hb_buffer_diff_flags_t; + +/* Compare the contents of two buffers, report types of differences. */ +HB_EXTERN hb_buffer_diff_flags_t +hb_buffer_diff (hb_buffer_t *buffer, + hb_buffer_t *reference, + hb_codepoint_t dottedcircle_glyph, + unsigned int position_fuzz); + + +/* + * Tracing. + */ + +/** + * hb_buffer_message_func_t: + * @buffer: An #hb_buffer_t to work upon + * @font: The #hb_font_t the @buffer is shaped with + * @message: `NULL`-terminated message passed to the function + * @user_data: User data pointer passed by the caller + * + * A callback method for #hb_buffer_t. The method gets called with the + * #hb_buffer_t it was set on, the #hb_font_t the buffer is shaped with and a + * message describing what step of the shaping process will be performed. + * Returning `false` from this method will skip this shaping step and move to + * the next one. + * + * Return value: `true` to perform the shaping step, `false` to skip it. + * + * Since: 1.1.3 + */ +typedef hb_bool_t (*hb_buffer_message_func_t) (hb_buffer_t *buffer, + hb_font_t *font, + const char *message, + void *user_data); + +HB_EXTERN void +hb_buffer_set_message_func (hb_buffer_t *buffer, + hb_buffer_message_func_t func, + void *user_data, hb_destroy_func_t destroy); + + +HB_END_DECLS + +#endif /* HB_BUFFER_H */ diff --git a/gfx/harfbuzz/src/hb-buffer.hh b/gfx/harfbuzz/src/hb-buffer.hh new file mode 100644 index 0000000000..7a97fc7168 --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer.hh @@ -0,0 +1,668 @@ +/* + * Copyright © 1998-2004 David Turner and Werner Lemberg + * Copyright © 2004,2007,2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Owen Taylor, Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_HH +#define HB_BUFFER_HH + +#include "hb.hh" +#include "hb-unicode.hh" +#include "hb-set-digest.hh" + + +static_assert ((sizeof (hb_glyph_info_t) == 20), ""); +static_assert ((sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t)), ""); + +HB_MARK_AS_FLAG_T (hb_glyph_flags_t); +HB_MARK_AS_FLAG_T (hb_buffer_flags_t); +HB_MARK_AS_FLAG_T (hb_buffer_serialize_flags_t); +HB_MARK_AS_FLAG_T (hb_buffer_diff_flags_t); + +enum hb_buffer_scratch_flags_t { + HB_BUFFER_SCRATCH_FLAG_DEFAULT = 0x00000000u, + HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII = 0x00000001u, + HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES = 0x00000002u, + HB_BUFFER_SCRATCH_FLAG_HAS_SPACE_FALLBACK = 0x00000004u, + HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT = 0x00000008u, + HB_BUFFER_SCRATCH_FLAG_HAS_CGJ = 0x00000010u, + HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS = 0x00000020u, + HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE = 0x00000040u, + + /* Reserved for shapers' internal use. */ + HB_BUFFER_SCRATCH_FLAG_SHAPER0 = 0x01000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER1 = 0x02000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER2 = 0x04000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER3 = 0x08000000u, +}; +HB_MARK_AS_FLAG_T (hb_buffer_scratch_flags_t); + + +/* + * hb_buffer_t + */ + +struct hb_buffer_t +{ + hb_object_header_t header; + + /* + * Information about how the text in the buffer should be treated. + */ + + hb_unicode_funcs_t *unicode; /* Unicode functions */ + hb_buffer_flags_t flags; /* BOT / EOT / etc. */ + hb_buffer_cluster_level_t cluster_level; + hb_codepoint_t replacement; /* U+FFFD or something else. */ + hb_codepoint_t invisible; /* 0 or something else. */ + hb_codepoint_t not_found; /* 0 or something else. */ + + /* + * Buffer contents + */ + + hb_buffer_content_type_t content_type; + hb_segment_properties_t props; /* Script, language, direction */ + + bool successful; /* Allocations successful */ + bool shaping_failed; /* Shaping failure */ + bool have_output; /* Whether we have an output buffer going on */ + bool have_positions; /* Whether we have positions */ + + unsigned int idx; /* Cursor into ->info and ->pos arrays */ + unsigned int len; /* Length of ->info and ->pos arrays */ + unsigned int out_len; /* Length of ->out_info array if have_output */ + + unsigned int allocated; /* Length of allocated arrays */ + hb_glyph_info_t *info; + hb_glyph_info_t *out_info; + hb_glyph_position_t *pos; + + /* Text before / after the main buffer contents. + * Always in Unicode, and ordered outward. + * Index 0 is for "pre-context", 1 for "post-context". */ + static constexpr unsigned CONTEXT_LENGTH = 5u; + hb_codepoint_t context[2][CONTEXT_LENGTH]; + unsigned int context_len[2]; + + + /* + * Managed by enter / leave + */ + + uint8_t allocated_var_bits; + uint8_t serial; + hb_buffer_scratch_flags_t scratch_flags; /* Have space-fallback, etc. */ + unsigned int max_len; /* Maximum allowed len. */ + int max_ops; /* Maximum allowed operations. */ + /* The bits here reflect current allocations of the bytes in glyph_info_t's var1 and var2. */ + + + /* + * Messaging callback + */ + +#ifndef HB_NO_BUFFER_MESSAGE + hb_buffer_message_func_t message_func; + void *message_data; + hb_destroy_func_t message_destroy; + unsigned message_depth; /* How deeply are we inside a message callback? */ +#else + static constexpr unsigned message_depth = 0u; +#endif + + + + /* Methods */ + + HB_NODISCARD bool in_error () const { return !successful; } + + void allocate_var (unsigned int start, unsigned int count) + { + unsigned int end = start + count; + assert (end <= 8); + unsigned int bits = (1u< (info, len).reverse (start, end); + if (have_positions) + hb_array_t (pos, len).reverse (start, end); + } + void reverse () { reverse_range (0, len); } + + template + void reverse_groups (const FuncType& group, + bool merge_clusters = false) + { + if (unlikely (!len)) + return; + + unsigned start = 0; + unsigned i; + for (i = 1; i < len; i++) + { + if (!group (info[i - 1], info[i])) + { + if (merge_clusters) + this->merge_clusters (start, i); + reverse_range (start, i); + start = i; + } + } + if (merge_clusters) + this->merge_clusters (start, i); + reverse_range (start, i); + + reverse (); + } + + template + unsigned group_end (unsigned start, const FuncType& group) const + { + while (++start < len && group (info[start - 1], info[start])) + ; + + return start; + } + + static bool _cluster_group_func (const hb_glyph_info_t& a, + const hb_glyph_info_t& b) + { return a.cluster == b.cluster; } + + void reverse_clusters () { reverse_groups (_cluster_group_func); } + + HB_INTERNAL void guess_segment_properties (); + + HB_INTERNAL bool sync (); + HB_INTERNAL int sync_so_far (); + HB_INTERNAL void clear_output (); + HB_INTERNAL void clear_positions (); + + template + HB_NODISCARD bool replace_glyphs (unsigned int num_in, + unsigned int num_out, + const T *glyph_data) + { + if (unlikely (!make_room_for (num_in, num_out))) return false; + + assert (idx + num_in <= len); + + merge_clusters (idx, idx + num_in); + + hb_glyph_info_t &orig_info = idx < len ? cur() : prev(); + + hb_glyph_info_t *pinfo = &out_info[out_len]; + for (unsigned int i = 0; i < num_out; i++) + { + *pinfo = orig_info; + pinfo->codepoint = glyph_data[i]; + pinfo++; + } + + idx += num_in; + out_len += num_out; + return true; + } + + HB_NODISCARD bool replace_glyph (hb_codepoint_t glyph_index) + { return replace_glyphs (1, 1, &glyph_index); } + + /* Makes a copy of the glyph at idx to output and replace glyph_index */ + HB_NODISCARD bool output_glyph (hb_codepoint_t glyph_index) + { return replace_glyphs (0, 1, &glyph_index); } + + HB_NODISCARD bool output_info (const hb_glyph_info_t &glyph_info) + { + if (unlikely (!make_room_for (0, 1))) return false; + + out_info[out_len] = glyph_info; + + out_len++; + return true; + } + /* Copies glyph at idx to output but doesn't advance idx */ + HB_NODISCARD bool copy_glyph () + { + /* Extra copy because cur()'s return can be freed within + * output_info() call if buffer reallocates. */ + return output_info (hb_glyph_info_t (cur())); + } + + /* Copies glyph at idx to output and advance idx. + * If there's no output, just advance idx. */ + HB_NODISCARD bool next_glyph () + { + if (have_output) + { + if (out_info != info || out_len != idx) + { + if (unlikely (!make_room_for (1, 1))) return false; + out_info[out_len] = info[idx]; + } + out_len++; + } + + idx++; + return true; + } + /* Copies n glyphs at idx to output and advance idx. + * If there's no output, just advance idx. */ + HB_NODISCARD bool next_glyphs (unsigned int n) + { + if (have_output) + { + if (out_info != info || out_len != idx) + { + if (unlikely (!make_room_for (n, n))) return false; + memmove (out_info + out_len, info + idx, n * sizeof (out_info[0])); + } + out_len += n; + } + + idx += n; + return true; + } + /* Advance idx without copying to output. */ + void skip_glyph () { idx++; } + void reset_masks (hb_mask_t mask) + { + for (unsigned int j = 0; j < len; j++) + info[j].mask = mask; + } + void add_masks (hb_mask_t mask) + { + for (unsigned int j = 0; j < len; j++) + info[j].mask |= mask; + } + HB_INTERNAL void set_masks (hb_mask_t value, hb_mask_t mask, + unsigned int cluster_start, unsigned int cluster_end); + + void merge_clusters (unsigned int start, unsigned int end) + { + if (end - start < 2) + return; + merge_clusters_impl (start, end); + } + HB_INTERNAL void merge_clusters_impl (unsigned int start, unsigned int end); + HB_INTERNAL void merge_out_clusters (unsigned int start, unsigned int end); + /* Merge clusters for deleting current glyph, and skip it. */ + HB_INTERNAL void delete_glyph (); + HB_INTERNAL void delete_glyphs_inplace (bool (*filter) (const hb_glyph_info_t *info)); + + + + /* Adds glyph flags in mask to infos with clusters between start and end. + * The start index will be from out-buffer if from_out_buffer is true. + * If interior is true, then the cluster having the minimum value is skipped. */ + void _set_glyph_flags (hb_mask_t mask, + unsigned start = 0, + unsigned end = (unsigned) -1, + bool interior = false, + bool from_out_buffer = false) + { + end = hb_min (end, len); + + if (interior && !from_out_buffer && end - start < 2) + return; + + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + + if (!from_out_buffer || !have_output) + { + if (!interior) + { + for (unsigned i = start; i < end; i++) + info[i].mask |= mask; + } + else + { + unsigned cluster = _infos_find_min_cluster (info, start, end); + _infos_set_glyph_flags (info, start, end, cluster, mask); + } + } + else + { + assert (start <= out_len); + assert (idx <= end); + + if (!interior) + { + for (unsigned i = start; i < out_len; i++) + out_info[i].mask |= mask; + for (unsigned i = idx; i < end; i++) + info[i].mask |= mask; + } + else + { + unsigned cluster = _infos_find_min_cluster (info, idx, end); + cluster = _infos_find_min_cluster (out_info, start, out_len, cluster); + + _infos_set_glyph_flags (out_info, start, out_len, cluster, mask); + _infos_set_glyph_flags (info, idx, end, cluster, mask); + } + } + } + + void unsafe_to_break (unsigned int start = 0, unsigned int end = -1) + { + _set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, + start, end, + true); + } + void safe_to_insert_tatweel (unsigned int start = 0, unsigned int end = -1) + { + if ((flags & HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL) == 0) + { + unsafe_to_break (start, end); + return; + } + _set_glyph_flags (HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL, + start, end, + true); + } + void unsafe_to_concat (unsigned int start = 0, unsigned int end = -1) + { + if (likely ((flags & HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT) == 0)) + return; + _set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, + start, end, + true); + } + void unsafe_to_break_from_outbuffer (unsigned int start = 0, unsigned int end = -1) + { + _set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, + start, end, + true, true); + } + void unsafe_to_concat_from_outbuffer (unsigned int start = 0, unsigned int end = -1) + { + if (likely ((flags & HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT) == 0)) + return; + _set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, + start, end, + false, true); + } + + + /* Internal methods */ + HB_NODISCARD HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */ + + HB_NODISCARD HB_INTERNAL bool enlarge (unsigned int size); + + HB_NODISCARD bool ensure (unsigned int size) + { return likely (!size || size < allocated) ? true : enlarge (size); } + + HB_NODISCARD bool ensure_inplace (unsigned int size) + { return likely (!size || size < allocated); } + + void assert_glyphs () + { + assert ((content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS) || + (!len && (content_type == HB_BUFFER_CONTENT_TYPE_INVALID))); + } + void assert_unicode () + { + assert ((content_type == HB_BUFFER_CONTENT_TYPE_UNICODE) || + (!len && (content_type == HB_BUFFER_CONTENT_TYPE_INVALID))); + } + HB_NODISCARD bool ensure_glyphs () + { + if (unlikely (content_type != HB_BUFFER_CONTENT_TYPE_GLYPHS)) + { + if (content_type != HB_BUFFER_CONTENT_TYPE_INVALID) + return false; + assert (len == 0); + content_type = HB_BUFFER_CONTENT_TYPE_GLYPHS; + } + return true; + } + HB_NODISCARD bool ensure_unicode () + { + if (unlikely (content_type != HB_BUFFER_CONTENT_TYPE_UNICODE)) + { + if (content_type != HB_BUFFER_CONTENT_TYPE_INVALID) + return false; + assert (len == 0); + content_type = HB_BUFFER_CONTENT_TYPE_UNICODE; + } + return true; + } + + HB_NODISCARD HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out); + HB_NODISCARD HB_INTERNAL bool shift_forward (unsigned int count); + + typedef long scratch_buffer_t; + HB_INTERNAL scratch_buffer_t *get_scratch_buffer (unsigned int *size); + + void clear_context (unsigned int side) { context_len[side] = 0; } + + HB_INTERNAL void sort (unsigned int start, unsigned int end, int(*compar)(const hb_glyph_info_t *, const hb_glyph_info_t *)); + + bool messaging () + { +#ifdef HB_NO_BUFFER_MESSAGE + return false; +#else + return unlikely (message_func); +#endif + } + bool message (hb_font_t *font, const char *fmt, ...) HB_PRINTF_FUNC(3, 4) + { +#ifdef HB_NO_BUFFER_MESSAGE + return true; +#else + if (likely (!messaging ())) + return true; + + va_list ap; + va_start (ap, fmt); + bool ret = message_impl (font, fmt, ap); + va_end (ap); + + return ret; +#endif + } + HB_INTERNAL bool message_impl (hb_font_t *font, const char *fmt, va_list ap) HB_PRINTF_FUNC(3, 0); + + static void + set_cluster (hb_glyph_info_t &inf, unsigned int cluster, unsigned int mask = 0) + { + if (inf.cluster != cluster) + inf.mask = (inf.mask & ~HB_GLYPH_FLAG_DEFINED) | (mask & HB_GLYPH_FLAG_DEFINED); + inf.cluster = cluster; + } + void + _infos_set_glyph_flags (hb_glyph_info_t *infos, + unsigned int start, unsigned int end, + unsigned int cluster, + hb_mask_t mask) + { + if (unlikely (start == end)) + return; + + unsigned cluster_first = infos[start].cluster; + unsigned cluster_last = infos[end - 1].cluster; + + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS || + (cluster != cluster_first && cluster != cluster_last)) + { + for (unsigned int i = start; i < end; i++) + if (cluster != infos[i].cluster) + { + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + infos[i].mask |= mask; + } + return; + } + + /* Monotone clusters */ + + if (cluster == cluster_first) + { + for (unsigned int i = end; start < i && infos[i - 1].cluster != cluster_first; i--) + { + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + infos[i - 1].mask |= mask; + } + } + else /* cluster == cluster_last */ + { + for (unsigned int i = start; i < end && infos[i].cluster != cluster_last; i++) + { + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + infos[i].mask |= mask; + } + } + } + unsigned + _infos_find_min_cluster (const hb_glyph_info_t *infos, + unsigned start, unsigned end, + unsigned cluster = UINT_MAX) + { + if (unlikely (start == end)) + return cluster; + + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS) + { + for (unsigned int i = start; i < end; i++) + cluster = hb_min (cluster, infos[i].cluster); + return cluster; + } + + return hb_min (cluster, hb_min (infos[start].cluster, infos[end - 1].cluster)); + } + + void clear_glyph_flags (hb_mask_t mask = 0) + { + for (unsigned int i = 0; i < len; i++) + info[i].mask = (info[i].mask & ~HB_GLYPH_FLAG_DEFINED) | (mask & HB_GLYPH_FLAG_DEFINED); + } +}; +DECLARE_NULL_INSTANCE (hb_buffer_t); + + +#define foreach_group(buffer, start, end, group_func) \ + for (unsigned int \ + _count = buffer->len, \ + start = 0, end = _count ? buffer->group_end (0, group_func) : 0; \ + start < _count; \ + start = end, end = buffer->group_end (start, group_func)) + +#define foreach_cluster(buffer, start, end) \ + foreach_group (buffer, start, end, hb_buffer_t::_cluster_group_func) + + +#define HB_BUFFER_XALLOCATE_VAR(b, func, var) \ + b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \ + sizeof (b->info[0].var)) +#define HB_BUFFER_ALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var ()) +#define HB_BUFFER_TRY_ALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, try_allocate_var, var ()) +#define HB_BUFFER_DEALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var ()) +#define HB_BUFFER_ASSERT_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, assert_var, var ()) + + +#endif /* HB_BUFFER_HH */ diff --git a/gfx/harfbuzz/src/hb-cache.hh b/gfx/harfbuzz/src/hb-cache.hh new file mode 100644 index 0000000000..8371465c6c --- /dev/null +++ b/gfx/harfbuzz/src/hb-cache.hh @@ -0,0 +1,101 @@ +/* + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_CACHE_HH +#define HB_CACHE_HH + +#include "hb.hh" + + +/* Implements a lockfree cache for int->int functions. + * + * The cache is a fixed-size array of 16-bit or 32-bit integers. + * The key is split into two parts: the cache index and the rest. + * + * The cache index is used to index into the array. The rest is used + * to store the key and the value. + * + * The value is stored in the least significant bits of the integer. + * The key is stored in the most significant bits of the integer. + * The key is shifted by cache_bits to the left to make room for the + * value. + */ + +template +struct hb_cache_t +{ + using item_t = typename std::conditional::type, + typename std::conditional::type + >::type; + + static_assert ((key_bits >= cache_bits), ""); + static_assert ((key_bits + value_bits <= cache_bits + 8 * sizeof (item_t)), ""); + + hb_cache_t () { init (); } + + void init () { clear (); } + + void clear () + { + for (unsigned i = 0; i < ARRAY_LENGTH (values); i++) + values[i] = -1; + } + + bool get (unsigned int key, unsigned int *value) const + { + unsigned int k = key & ((1u<> value_bits) != (key >> cache_bits)) + return false; + *value = v & ((1u<> key_bits) || (value >> value_bits))) + return false; /* Overflows */ + unsigned int k = key & ((1u<>cache_bits)< + +/* Some routines in this file were ported from BlackRenderer by Black Foundry. + * Used by permission to relicense to HarfBuzz license. + * + * https://github.com/BlackFoundryCom/black-renderer + */ + +#define PREALLOCATED_COLOR_STOPS 16 + +typedef struct { + float r, g, b, a; +} hb_cairo_color_t; + +static inline cairo_extend_t +hb_cairo_extend (hb_paint_extend_t extend) +{ + switch (extend) + { + case HB_PAINT_EXTEND_PAD: return CAIRO_EXTEND_PAD; + case HB_PAINT_EXTEND_REPEAT: return CAIRO_EXTEND_REPEAT; + case HB_PAINT_EXTEND_REFLECT: return CAIRO_EXTEND_REFLECT; + default: break; + } + + return CAIRO_EXTEND_PAD; +} + +#ifdef CAIRO_HAS_PNG_FUNCTIONS +typedef struct +{ + hb_blob_t *blob; + unsigned int offset; +} hb_cairo_read_blob_data_t; + +static cairo_status_t +hb_cairo_read_blob (void *closure, + unsigned char *data, + unsigned int length) +{ + hb_cairo_read_blob_data_t *r = (hb_cairo_read_blob_data_t *) closure; + const char *d; + unsigned int size; + + d = hb_blob_get_data (r->blob, &size); + + if (r->offset + length > size) + return CAIRO_STATUS_READ_ERROR; + + memcpy (data, d + r->offset, length); + r->offset += length; + + return CAIRO_STATUS_SUCCESS; +} +#endif + +static const cairo_user_data_key_t *_hb_cairo_surface_blob_user_data_key = {0}; + +static void +_hb_cairo_destroy_blob (void *p) +{ + hb_blob_destroy ((hb_blob_t *) p); +} + +hb_bool_t +_hb_cairo_paint_glyph_image (hb_cairo_context_t *c, + hb_blob_t *blob, + unsigned width, + unsigned height, + hb_tag_t format, + float slant, + hb_glyph_extents_t *extents) +{ + cairo_t *cr = c->cr; + + if (!extents) /* SVG currently. */ + return false; + + cairo_surface_t *surface = nullptr; + +#ifdef CAIRO_HAS_PNG_FUNCTIONS + if (format == HB_PAINT_IMAGE_FORMAT_PNG) + { + hb_cairo_read_blob_data_t r; + r.blob = blob; + r.offset = 0; + surface = cairo_image_surface_create_from_png_stream (hb_cairo_read_blob, &r); + + /* For PNG, width,height can be unreliable, as is the case for NotoColorEmoji :(. + * Just pull them out of the surface. */ + width = cairo_image_surface_get_width (surface); + height = cairo_image_surface_get_width (surface); + } + else +#endif + if (format == HB_PAINT_IMAGE_FORMAT_BGRA) + { + /* Byte-endian conversion. */ + unsigned data_size = hb_blob_get_length (blob); + if (data_size < width * height * 4) + return false; + + unsigned char *data; +#ifdef __BYTE_ORDER + if (__BYTE_ORDER == __BIG_ENDIAN) + { + data = (unsigned char *) hb_blob_get_data_writable (blob, nullptr); + if (!data) + return false; + + unsigned count = width * height * 4; + for (unsigned i = 0; i < count; i += 4) + { + unsigned char b; + b = data[i]; + data[i] = data[i+3]; + data[i+3] = b; + b = data[i+1]; + data[i+1] = data[i+2]; + data[i+2] = b; + } + } + else +#endif + data = (unsigned char *) hb_blob_get_data (blob, nullptr); + + surface = cairo_image_surface_create_for_data (data, + CAIRO_FORMAT_ARGB32, + width, height, + width * 4); + + cairo_surface_set_user_data (surface, + _hb_cairo_surface_blob_user_data_key, + hb_blob_reference (blob), + _hb_cairo_destroy_blob); + } + + if (!surface) + return false; + + cairo_save (cr); + /* this clip is here to work around recording surface limitations */ + cairo_rectangle (cr, + extents->x_bearing, + extents->y_bearing, + extents->width, + extents->height); + cairo_clip (cr); + + cairo_pattern_t *pattern = cairo_pattern_create_for_surface (surface); + cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD); + + cairo_matrix_t matrix = {(double) width, 0, 0, (double) height, 0, 0}; + cairo_pattern_set_matrix (pattern, &matrix); + + /* Undo slant in the extents and apply it in the context. */ + extents->width -= extents->height * slant; + extents->x_bearing -= extents->y_bearing * slant; + cairo_matrix_t cairo_matrix = {1., 0., (double) slant, 1., 0., 0.}; + cairo_transform (cr, &cairo_matrix); + + cairo_translate (cr, extents->x_bearing, extents->y_bearing); + cairo_scale (cr, extents->width, extents->height); + cairo_set_source (cr, pattern); + + cairo_paint (cr); + + cairo_pattern_destroy (pattern); + cairo_surface_destroy (surface); + + cairo_restore (cr); + + return true; +} + +static void +_hb_cairo_reduce_anchors (float x0, float y0, + float x1, float y1, + float x2, float y2, + float *xx0, float *yy0, + float *xx1, float *yy1) +{ + float q1x, q1y, q2x, q2y; + float s; + float k; + + q2x = x2 - x0; + q2y = y2 - y0; + q1x = x1 - x0; + q1y = y1 - y0; + + s = q2x * q2x + q2y * q2y; + if (s < 0.000001f) + { + *xx0 = x0; *yy0 = y0; + *xx1 = x1; *yy1 = y1; + return; + } + + k = (q2x * q1x + q2y * q1y) / s; + *xx0 = x0; + *yy0 = y0; + *xx1 = x1 - k * q2x; + *yy1 = y1 - k * q2y; +} + +static int +_hb_cairo_cmp_color_stop (const void *p1, + const void *p2) +{ + const hb_color_stop_t *c1 = (const hb_color_stop_t *) p1; + const hb_color_stop_t *c2 = (const hb_color_stop_t *) p2; + + if (c1->offset < c2->offset) + return -1; + else if (c1->offset > c2->offset) + return 1; + else + return 0; +} + +static void +_hb_cairo_normalize_color_line (hb_color_stop_t *stops, + unsigned int len, + float *omin, + float *omax) +{ + float min, max; + + hb_qsort (stops, len, sizeof (hb_color_stop_t), _hb_cairo_cmp_color_stop); + + min = max = stops[0].offset; + for (unsigned int i = 0; i < len; i++) + { + min = hb_min (min, stops[i].offset); + max = hb_max (max, stops[i].offset); + } + + if (min != max) + { + for (unsigned int i = 0; i < len; i++) + stops[i].offset = (stops[i].offset - min) / (max - min); + } + + *omin = min; + *omax = max; +} + +static bool +_hb_cairo_get_color_stops (hb_cairo_context_t *c, + hb_color_line_t *color_line, + unsigned *count, + hb_color_stop_t **stops) +{ + unsigned len = hb_color_line_get_color_stops (color_line, 0, nullptr, nullptr); + if (len > *count) + { + *stops = (hb_color_stop_t *) hb_malloc (len * sizeof (hb_color_stop_t)); + if (unlikely (!stops)) + return false; + } + hb_color_line_get_color_stops (color_line, 0, &len, *stops); + for (unsigned i = 0; i < len; i++) + if ((*stops)[i].is_foreground) + { +#ifdef HAVE_CAIRO_USER_SCALED_FONT_GET_FOREGROUND_SOURCE + double r, g, b, a; + cairo_pattern_t *foreground = cairo_user_scaled_font_get_foreground_source (c->scaled_font); + if (cairo_pattern_get_rgba (foreground, &r, &g, &b, &a) == CAIRO_STATUS_SUCCESS) + (*stops)[i].color = HB_COLOR (round (b * 255.), round (g * 255.), round (r * 255.), + round (a * hb_color_get_alpha ((*stops)[i].color))); + else +#endif + (*stops)[i].color = HB_COLOR (0, 0, 0, hb_color_get_alpha ((*stops)[i].color)); + } + + *count = len; + return true; +} + +void +_hb_cairo_paint_linear_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float x0, float y0, + float x1, float y1, + float x2, float y2) +{ + cairo_t *cr = c->cr; + + unsigned int len = PREALLOCATED_COLOR_STOPS; + hb_color_stop_t stops_[PREALLOCATED_COLOR_STOPS]; + hb_color_stop_t *stops = stops_; + float xx0, yy0, xx1, yy1; + float xxx0, yyy0, xxx1, yyy1; + float min, max; + cairo_pattern_t *pattern; + + if (unlikely (!_hb_cairo_get_color_stops (c, color_line, &len, &stops))) + return; + _hb_cairo_normalize_color_line (stops, len, &min, &max); + + _hb_cairo_reduce_anchors (x0, y0, x1, y1, x2, y2, &xx0, &yy0, &xx1, &yy1); + + xxx0 = xx0 + min * (xx1 - xx0); + yyy0 = yy0 + min * (yy1 - yy0); + xxx1 = xx0 + max * (xx1 - xx0); + yyy1 = yy0 + max * (yy1 - yy0); + + pattern = cairo_pattern_create_linear ((double) xxx0, (double) yyy0, (double) xxx1, (double) yyy1); + cairo_pattern_set_extend (pattern, hb_cairo_extend (hb_color_line_get_extend (color_line))); + for (unsigned int i = 0; i < len; i++) + { + double r, g, b, a; + r = hb_color_get_red (stops[i].color) / 255.; + g = hb_color_get_green (stops[i].color) / 255.; + b = hb_color_get_blue (stops[i].color) / 255.; + a = hb_color_get_alpha (stops[i].color) / 255.; + cairo_pattern_add_color_stop_rgba (pattern, (double) stops[i].offset, r, g, b, a); + } + + cairo_set_source (cr, pattern); + cairo_paint (cr); + + cairo_pattern_destroy (pattern); + + if (stops != stops_) + hb_free (stops); +} + +void +_hb_cairo_paint_radial_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float x0, float y0, float r0, + float x1, float y1, float r1) +{ + cairo_t *cr = c->cr; + + unsigned int len = PREALLOCATED_COLOR_STOPS; + hb_color_stop_t stops_[PREALLOCATED_COLOR_STOPS]; + hb_color_stop_t *stops = stops_; + float min, max; + float xx0, yy0, xx1, yy1; + float rr0, rr1; + cairo_pattern_t *pattern; + + if (unlikely (!_hb_cairo_get_color_stops (c, color_line, &len, &stops))) + return; + _hb_cairo_normalize_color_line (stops, len, &min, &max); + + xx0 = x0 + min * (x1 - x0); + yy0 = y0 + min * (y1 - y0); + xx1 = x0 + max * (x1 - x0); + yy1 = y0 + max * (y1 - y0); + rr0 = r0 + min * (r1 - r0); + rr1 = r0 + max * (r1 - r0); + + pattern = cairo_pattern_create_radial ((double) xx0, (double) yy0, (double) rr0, (double) xx1, (double) yy1, (double) rr1); + cairo_pattern_set_extend (pattern, hb_cairo_extend (hb_color_line_get_extend (color_line))); + + for (unsigned int i = 0; i < len; i++) + { + double r, g, b, a; + r = hb_color_get_red (stops[i].color) / 255.; + g = hb_color_get_green (stops[i].color) / 255.; + b = hb_color_get_blue (stops[i].color) / 255.; + a = hb_color_get_alpha (stops[i].color) / 255.; + cairo_pattern_add_color_stop_rgba (pattern, (double) stops[i].offset, r, g, b, a); + } + + cairo_set_source (cr, pattern); + cairo_paint (cr); + + cairo_pattern_destroy (pattern); + + if (stops != stops_) + hb_free (stops); +} + +typedef struct { + float x, y; +} hb_cairo_point_t; + +static inline float +_hb_cairo_interpolate (float f0, float f1, float f) +{ + return f0 + f * (f1 - f0); +} + +static inline void +_hb_cairo_premultiply (hb_cairo_color_t *c) +{ + c->r *= c->a; + c->g *= c->a; + c->b *= c->a; +} + +static inline void +_hb_cairo_unpremultiply (hb_cairo_color_t *c) +{ + if (c->a != 0.f) + { + c->r /= c->a; + c->g /= c->a; + c->b /= c->a; + } +} + +static void +_hb_cairo_interpolate_colors (hb_cairo_color_t *c0, hb_cairo_color_t *c1, float k, hb_cairo_color_t *c) +{ + // According to the COLR specification, gradients + // should be interpolated in premultiplied form + _hb_cairo_premultiply (c0); + _hb_cairo_premultiply (c1); + c->r = c0->r + k * (c1->r - c0->r); + c->g = c0->g + k * (c1->g - c0->g); + c->b = c0->b + k * (c1->b - c0->b); + c->a = c0->a + k * (c1->a - c0->a); + _hb_cairo_unpremultiply (c); +} + +static inline float +_hb_cairo_dot (hb_cairo_point_t p, hb_cairo_point_t q) +{ + return p.x * q.x + p.y * q.y; +} + +static inline hb_cairo_point_t +_hb_cairo_normalize (hb_cairo_point_t p) +{ + float len = sqrtf (_hb_cairo_dot (p, p)); + + return hb_cairo_point_t { p.x / len, p.y / len }; +} + +static inline hb_cairo_point_t +_hb_cairo_sum (hb_cairo_point_t p, hb_cairo_point_t q) +{ + return hb_cairo_point_t { p.x + q.x, p.y + q.y }; +} + +static inline hb_cairo_point_t +_hb_cairo_difference (hb_cairo_point_t p, hb_cairo_point_t q) +{ + return hb_cairo_point_t { p.x - q.x, p.y - q.y }; +} + +static inline hb_cairo_point_t +_hb_cairo_scale (hb_cairo_point_t p, float f) +{ + return hb_cairo_point_t { p.x * f, p.y * f }; +} + +typedef struct { + hb_cairo_point_t center, p0, c0, c1, p1; + hb_cairo_color_t color0, color1; +} hb_cairo_patch_t; + +static void +_hb_cairo_add_patch (cairo_pattern_t *pattern, hb_cairo_point_t *center, hb_cairo_patch_t *p) +{ + cairo_mesh_pattern_begin_patch (pattern); + cairo_mesh_pattern_move_to (pattern, (double) center->x, (double) center->y); + cairo_mesh_pattern_line_to (pattern, (double) p->p0.x, (double) p->p0.y); + cairo_mesh_pattern_curve_to (pattern, + (double) p->c0.x, (double) p->c0.y, + (double) p->c1.x, (double) p->c1.y, + (double) p->p1.x, (double) p->p1.y); + cairo_mesh_pattern_line_to (pattern, (double) center->x, (double) center->y); + cairo_mesh_pattern_set_corner_color_rgba (pattern, 0, + (double) p->color0.r, + (double) p->color0.g, + (double) p->color0.b, + (double) p->color0.a); + cairo_mesh_pattern_set_corner_color_rgba (pattern, 1, + (double) p->color0.r, + (double) p->color0.g, + (double) p->color0.b, + (double) p->color0.a); + cairo_mesh_pattern_set_corner_color_rgba (pattern, 2, + (double) p->color1.r, + (double) p->color1.g, + (double) p->color1.b, + (double) p->color1.a); + cairo_mesh_pattern_set_corner_color_rgba (pattern, 3, + (double) p->color1.r, + (double) p->color1.g, + (double) p->color1.b, + (double) p->color1.a); + cairo_mesh_pattern_end_patch (pattern); +} + +#define MAX_ANGLE (HB_PI / 8.f) + +static void +_hb_cairo_add_sweep_gradient_patches1 (float cx, float cy, float radius, + float a0, hb_cairo_color_t *c0, + float a1, hb_cairo_color_t *c1, + cairo_pattern_t *pattern) +{ + hb_cairo_point_t center = hb_cairo_point_t { cx, cy }; + int num_splits; + hb_cairo_point_t p0; + hb_cairo_color_t color0, color1; + + num_splits = ceilf (fabsf (a1 - a0) / MAX_ANGLE); + p0 = hb_cairo_point_t { cosf (a0), sinf (a0) }; + color0 = *c0; + + for (int a = 0; a < num_splits; a++) + { + float k = (a + 1.) / num_splits; + float angle1; + hb_cairo_point_t p1; + hb_cairo_point_t A, U; + hb_cairo_point_t C0, C1; + hb_cairo_patch_t patch; + + angle1 = _hb_cairo_interpolate (a0, a1, k); + _hb_cairo_interpolate_colors (c0, c1, k, &color1); + + patch.color0 = color0; + patch.color1 = color1; + + p1 = hb_cairo_point_t { cosf (angle1), sinf (angle1) }; + patch.p0 = _hb_cairo_sum (center, _hb_cairo_scale (p0, radius)); + patch.p1 = _hb_cairo_sum (center, _hb_cairo_scale (p1, radius)); + + A = _hb_cairo_normalize (_hb_cairo_sum (p0, p1)); + U = hb_cairo_point_t { -A.y, A.x }; + C0 = _hb_cairo_sum (A, _hb_cairo_scale (U, _hb_cairo_dot (_hb_cairo_difference (p0, A), p0) / _hb_cairo_dot (U, p0))); + C1 = _hb_cairo_sum (A, _hb_cairo_scale (U, _hb_cairo_dot (_hb_cairo_difference (p1, A), p1) / _hb_cairo_dot (U, p1))); + + patch.c0 = _hb_cairo_sum (center, _hb_cairo_scale (_hb_cairo_sum (C0, _hb_cairo_scale (_hb_cairo_difference (C0, p0), 0.33333f)), radius)); + patch.c1 = _hb_cairo_sum (center, _hb_cairo_scale (_hb_cairo_sum (C1, _hb_cairo_scale (_hb_cairo_difference (C1, p1), 0.33333f)), radius)); + + _hb_cairo_add_patch (pattern, ¢er, &patch); + + p0 = p1; + color0 = color1; + } +} + +static void +_hb_cairo_add_sweep_gradient_patches (hb_color_stop_t *stops, + unsigned int n_stops, + cairo_extend_t extend, + float cx, float cy, + float radius, + float start_angle, + float end_angle, + cairo_pattern_t *pattern) +{ + float angles_[PREALLOCATED_COLOR_STOPS]; + float *angles = angles_; + hb_cairo_color_t colors_[PREALLOCATED_COLOR_STOPS]; + hb_cairo_color_t *colors = colors_; + hb_cairo_color_t color0, color1; + + if (start_angle == end_angle) + { + if (extend == CAIRO_EXTEND_PAD) + { + hb_cairo_color_t c; + if (start_angle > 0) + { + c.r = hb_color_get_red (stops[0].color) / 255.; + c.g = hb_color_get_green (stops[0].color) / 255.; + c.b = hb_color_get_blue (stops[0].color) / 255.; + c.a = hb_color_get_alpha (stops[0].color) / 255.; + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + 0., &c, + start_angle, &c, + pattern); + } + if (end_angle < HB_2_PI) + { + c.r = hb_color_get_red (stops[n_stops - 1].color) / 255.; + c.g = hb_color_get_green (stops[n_stops - 1].color) / 255.; + c.b = hb_color_get_blue (stops[n_stops - 1].color) / 255.; + c.a = hb_color_get_alpha (stops[n_stops - 1].color) / 255.; + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + end_angle, &c, + HB_2_PI, &c, + pattern); + } + } + return; + } + + assert (start_angle != end_angle); + + /* handle directions */ + if (end_angle < start_angle) + { + hb_swap (start_angle, end_angle); + + for (unsigned i = 0; i < n_stops - 1 - i; i++) + hb_swap (stops[i], stops[n_stops - 1 - i]); + for (unsigned i = 0; i < n_stops; i++) + stops[i].offset = 1 - stops[i].offset; + } + + if (n_stops > PREALLOCATED_COLOR_STOPS) + { + angles = (float *) hb_malloc (sizeof (float) * n_stops); + colors = (hb_cairo_color_t *) hb_malloc (sizeof (hb_cairo_color_t) * n_stops); + if (unlikely (!angles || !colors)) + { + hb_free (angles); + hb_free (colors); + return; + } + } + + for (unsigned i = 0; i < n_stops; i++) + { + angles[i] = start_angle + stops[i].offset * (end_angle - start_angle); + colors[i].r = hb_color_get_red (stops[i].color) / 255.; + colors[i].g = hb_color_get_green (stops[i].color) / 255.; + colors[i].b = hb_color_get_blue (stops[i].color) / 255.; + colors[i].a = hb_color_get_alpha (stops[i].color) / 255.; + } + + if (extend == CAIRO_EXTEND_PAD) + { + unsigned pos; + + color0 = colors[0]; + for (pos = 0; pos < n_stops; pos++) + { + if (angles[pos] >= 0) + { + if (pos > 0) + { + float k = (0 - angles[pos - 1]) / (angles[pos] - angles[pos - 1]); + _hb_cairo_interpolate_colors (&colors[pos-1], &colors[pos], k, &color0); + } + break; + } + } + if (pos == n_stops) + { + /* everything is below 0 */ + color0 = colors[n_stops-1]; + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + 0., &color0, + HB_2_PI, &color0, + pattern); + goto done; + } + + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + 0., &color0, + angles[pos], &colors[pos], + pattern); + + for (pos++; pos < n_stops; pos++) + { + if (angles[pos] <= HB_2_PI) + { + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + angles[pos - 1], &colors[pos-1], + angles[pos], &colors[pos], + pattern); + } + else + { + float k = (HB_2_PI - angles[pos - 1]) / (angles[pos] - angles[pos - 1]); + _hb_cairo_interpolate_colors (&colors[pos - 1], &colors[pos], k, &color1); + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + angles[pos - 1], &colors[pos - 1], + HB_2_PI, &color1, + pattern); + break; + } + } + + if (pos == n_stops) + { + /* everything is below 2*M_PI */ + color0 = colors[n_stops - 1]; + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + angles[n_stops - 1], &color0, + HB_2_PI, &color0, + pattern); + goto done; + } + } + else + { + int k; + float span; + + span = angles[n_stops - 1] - angles[0]; + k = 0; + if (angles[0] >= 0) + { + float ss = angles[0]; + while (ss > 0) + { + if (span > 0) + { + ss -= span; + k--; + } + else + { + ss += span; + k++; + } + } + } + else if (angles[0] < 0) + { + float ee = angles[n_stops - 1]; + while (ee < 0) + { + if (span > 0) + { + ee += span; + k++; + } + else + { + ee -= span; + k--; + } + } + } + + //assert (angles[0] + k * span <= 0 && 0 < angles[n_stops - 1] + k * span); + span = fabs (span); + + for (signed l = k; l < 1000; l++) + { + for (unsigned i = 1; i < n_stops; i++) + { + float a0, a1; + hb_cairo_color_t *c0, *c1; + + if ((l % 2 != 0) && (extend == CAIRO_EXTEND_REFLECT)) + { + a0 = angles[0] + angles[n_stops - 1] - angles[n_stops - 1 - (i-1)] + l * span; + a1 = angles[0] + angles[n_stops - 1] - angles[n_stops - 1 - i] + l * span; + c0 = &colors[n_stops - 1 - (i - 1)]; + c1 = &colors[n_stops - 1 - i]; + } + else + { + a0 = angles[i-1] + l * span; + a1 = angles[i] + l * span; + c0 = &colors[i-1]; + c1 = &colors[i]; + } + + if (a1 < 0) + continue; + if (a0 < 0) + { + hb_cairo_color_t color; + float f = (0 - a0)/(a1 - a0); + _hb_cairo_interpolate_colors (c0, c1, f, &color); + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + 0, &color, + a1, c1, + pattern); + } + else if (a1 >= HB_2_PI) + { + hb_cairo_color_t color; + float f = (HB_2_PI - a0)/(a1 - a0); + _hb_cairo_interpolate_colors (c0, c1, f, &color); + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + a0, c0, + HB_2_PI, &color, + pattern); + goto done; + } + else + { + _hb_cairo_add_sweep_gradient_patches1 (cx, cy, radius, + a0, c0, + a1, c1, + pattern); + } + } + } + } + +done: + + if (angles != angles_) + hb_free (angles); + if (colors != colors_) + hb_free (colors); +} + +void +_hb_cairo_paint_sweep_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float cx, float cy, + float start_angle, + float end_angle) +{ + cairo_t *cr = c->cr; + + unsigned int len = PREALLOCATED_COLOR_STOPS; + hb_color_stop_t stops_[PREALLOCATED_COLOR_STOPS]; + hb_color_stop_t *stops = stops_; + cairo_extend_t extend; + double x1, y1, x2, y2; + float max_x, max_y, radius; + cairo_pattern_t *pattern; + + if (unlikely (!_hb_cairo_get_color_stops (c, color_line, &len, &stops))) + return; + + hb_qsort (stops, len, sizeof (hb_color_stop_t), _hb_cairo_cmp_color_stop); + + cairo_clip_extents (cr, &x1, &y1, &x2, &y2); + max_x = (float) hb_max ((x1 - (double) cx) * (x1 - (double) cx), (x2 - (double) cx) * (x2 - (double) cx)); + max_y = (float) hb_max ((y1 - (double) cy) * (y1 - (double) cy), (y2 - (double) cy) * (y2 - (double) cy)); + radius = sqrtf (max_x + max_y); + + extend = hb_cairo_extend (hb_color_line_get_extend (color_line)); + pattern = cairo_pattern_create_mesh (); + + _hb_cairo_add_sweep_gradient_patches (stops, len, extend, cx, cy, + radius, start_angle, end_angle, pattern); + + cairo_set_source (cr, pattern); + cairo_paint (cr); + + cairo_pattern_destroy (pattern); + + if (stops != stops_) + hb_free (stops); +} + +#endif diff --git a/gfx/harfbuzz/src/hb-cairo-utils.hh b/gfx/harfbuzz/src/hb-cairo-utils.hh new file mode 100644 index 0000000000..a26bf59d91 --- /dev/null +++ b/gfx/harfbuzz/src/hb-cairo-utils.hh @@ -0,0 +1,107 @@ +/* + * Copyright © 2022 Red Hat, Inc + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Matthias Clasen + */ + +#ifndef HB_CAIRO_UTILS_H +#define HB_CAIRO_UTILS_H + +#include "hb.hh" +#include "hb-cairo.h" + + +typedef struct +{ + cairo_scaled_font_t *scaled_font; + cairo_t *cr; + hb_map_t *color_cache; +} hb_cairo_context_t; + +static inline cairo_operator_t +_hb_paint_composite_mode_to_cairo (hb_paint_composite_mode_t mode) +{ + switch (mode) + { + case HB_PAINT_COMPOSITE_MODE_CLEAR: return CAIRO_OPERATOR_CLEAR; + case HB_PAINT_COMPOSITE_MODE_SRC: return CAIRO_OPERATOR_SOURCE; + case HB_PAINT_COMPOSITE_MODE_DEST: return CAIRO_OPERATOR_DEST; + case HB_PAINT_COMPOSITE_MODE_SRC_OVER: return CAIRO_OPERATOR_OVER; + case HB_PAINT_COMPOSITE_MODE_DEST_OVER: return CAIRO_OPERATOR_DEST_OVER; + case HB_PAINT_COMPOSITE_MODE_SRC_IN: return CAIRO_OPERATOR_IN; + case HB_PAINT_COMPOSITE_MODE_DEST_IN: return CAIRO_OPERATOR_DEST_IN; + case HB_PAINT_COMPOSITE_MODE_SRC_OUT: return CAIRO_OPERATOR_OUT; + case HB_PAINT_COMPOSITE_MODE_DEST_OUT: return CAIRO_OPERATOR_DEST_OUT; + case HB_PAINT_COMPOSITE_MODE_SRC_ATOP: return CAIRO_OPERATOR_ATOP; + case HB_PAINT_COMPOSITE_MODE_DEST_ATOP: return CAIRO_OPERATOR_DEST_ATOP; + case HB_PAINT_COMPOSITE_MODE_XOR: return CAIRO_OPERATOR_XOR; + case HB_PAINT_COMPOSITE_MODE_PLUS: return CAIRO_OPERATOR_ADD; + case HB_PAINT_COMPOSITE_MODE_SCREEN: return CAIRO_OPERATOR_SCREEN; + case HB_PAINT_COMPOSITE_MODE_OVERLAY: return CAIRO_OPERATOR_OVERLAY; + case HB_PAINT_COMPOSITE_MODE_DARKEN: return CAIRO_OPERATOR_DARKEN; + case HB_PAINT_COMPOSITE_MODE_LIGHTEN: return CAIRO_OPERATOR_LIGHTEN; + case HB_PAINT_COMPOSITE_MODE_COLOR_DODGE: return CAIRO_OPERATOR_COLOR_DODGE; + case HB_PAINT_COMPOSITE_MODE_COLOR_BURN: return CAIRO_OPERATOR_COLOR_BURN; + case HB_PAINT_COMPOSITE_MODE_HARD_LIGHT: return CAIRO_OPERATOR_HARD_LIGHT; + case HB_PAINT_COMPOSITE_MODE_SOFT_LIGHT: return CAIRO_OPERATOR_SOFT_LIGHT; + case HB_PAINT_COMPOSITE_MODE_DIFFERENCE: return CAIRO_OPERATOR_DIFFERENCE; + case HB_PAINT_COMPOSITE_MODE_EXCLUSION: return CAIRO_OPERATOR_EXCLUSION; + case HB_PAINT_COMPOSITE_MODE_MULTIPLY: return CAIRO_OPERATOR_MULTIPLY; + case HB_PAINT_COMPOSITE_MODE_HSL_HUE: return CAIRO_OPERATOR_HSL_HUE; + case HB_PAINT_COMPOSITE_MODE_HSL_SATURATION: return CAIRO_OPERATOR_HSL_SATURATION; + case HB_PAINT_COMPOSITE_MODE_HSL_COLOR: return CAIRO_OPERATOR_HSL_COLOR; + case HB_PAINT_COMPOSITE_MODE_HSL_LUMINOSITY: return CAIRO_OPERATOR_HSL_LUMINOSITY; + default: return CAIRO_OPERATOR_CLEAR; + } +} + +HB_INTERNAL hb_bool_t +_hb_cairo_paint_glyph_image (hb_cairo_context_t *c, + hb_blob_t *blob, + unsigned width, + unsigned height, + hb_tag_t format, + float slant, + hb_glyph_extents_t *extents); + +HB_INTERNAL void +_hb_cairo_paint_linear_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float x0, float y0, + float x1, float y1, + float x2, float y2); + +HB_INTERNAL void +_hb_cairo_paint_radial_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float x0, float y0, float r0, + float x1, float y1, float r1); + +HB_INTERNAL void +_hb_cairo_paint_sweep_gradient (hb_cairo_context_t *c, + hb_color_line_t *color_line, + float x0, float y0, + float start_angle, float end_angle); + + +#endif /* HB_CAIRO_UTILS_H */ diff --git a/gfx/harfbuzz/src/hb-cairo.cc b/gfx/harfbuzz/src/hb-cairo.cc new file mode 100644 index 0000000000..f005afd17e --- /dev/null +++ b/gfx/harfbuzz/src/hb-cairo.cc @@ -0,0 +1,1010 @@ +/* + * Copyright © 2022 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Matthias Clasen + */ + +#include "hb.hh" + +#ifdef HAVE_CAIRO + +#include "hb-cairo.h" + +#include "hb-cairo-utils.hh" + +#include "hb-machinery.hh" +#include "hb-utf.hh" + + +/** + * SECTION:hb-cairo + * @title: hb-cairo + * @short_description: Cairo integration + * @include: hb-cairo.h + * + * Functions for using HarfBuzz with the cairo library. + * + * HarfBuzz supports using cairo for rendering. + **/ + +static void +hb_cairo_move_to (hb_draw_funcs_t *dfuncs HB_UNUSED, + void *draw_data, + hb_draw_state_t *st HB_UNUSED, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + cairo_t *cr = (cairo_t *) draw_data; + + cairo_move_to (cr, (double) to_x, (double) to_y); +} + +static void +hb_cairo_line_to (hb_draw_funcs_t *dfuncs HB_UNUSED, + void *draw_data, + hb_draw_state_t *st HB_UNUSED, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + cairo_t *cr = (cairo_t *) draw_data; + + cairo_line_to (cr, (double) to_x, (double) to_y); +} + +static void +hb_cairo_cubic_to (hb_draw_funcs_t *dfuncs HB_UNUSED, + void *draw_data, + hb_draw_state_t *st HB_UNUSED, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + cairo_t *cr = (cairo_t *) draw_data; + + cairo_curve_to (cr, + (double) control1_x, (double) control1_y, + (double) control2_x, (double) control2_y, + (double) to_x, (double) to_y); +} + +static void +hb_cairo_close_path (hb_draw_funcs_t *dfuncs HB_UNUSED, + void *draw_data, + hb_draw_state_t *st HB_UNUSED, + void *user_data HB_UNUSED) +{ + cairo_t *cr = (cairo_t *) draw_data; + + cairo_close_path (cr); +} + +static inline void free_static_cairo_draw_funcs (); + +static struct hb_cairo_draw_funcs_lazy_loader_t : hb_draw_funcs_lazy_loader_t +{ + static hb_draw_funcs_t *create () + { + hb_draw_funcs_t *funcs = hb_draw_funcs_create (); + + hb_draw_funcs_set_move_to_func (funcs, hb_cairo_move_to, nullptr, nullptr); + hb_draw_funcs_set_line_to_func (funcs, hb_cairo_line_to, nullptr, nullptr); + hb_draw_funcs_set_cubic_to_func (funcs, hb_cairo_cubic_to, nullptr, nullptr); + hb_draw_funcs_set_close_path_func (funcs, hb_cairo_close_path, nullptr, nullptr); + + hb_draw_funcs_make_immutable (funcs); + + hb_atexit (free_static_cairo_draw_funcs); + + return funcs; + } +} static_cairo_draw_funcs; + +static inline +void free_static_cairo_draw_funcs () +{ + static_cairo_draw_funcs.free_instance (); +} + +static hb_draw_funcs_t * +hb_cairo_draw_get_funcs () +{ + return static_cairo_draw_funcs.get_unconst (); +} + + +#ifdef HAVE_CAIRO_USER_FONT_FACE_SET_RENDER_COLOR_GLYPH_FUNC + +static void +hb_cairo_push_transform (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + float xx, float yx, + float xy, float yy, + float dx, float dy, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_matrix_t m; + + cairo_save (cr); + cairo_matrix_init (&m, (double) xx, (double) yx, + (double) xy, (double) yy, + (double) dx, (double) dy); + cairo_transform (cr, &m); +} + +static void +hb_cairo_pop_transform (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_restore (cr); +} + +static void +hb_cairo_push_clip_glyph (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_codepoint_t glyph, + hb_font_t *font, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_save (cr); + cairo_new_path (cr); + hb_font_draw_glyph (font, glyph, hb_cairo_draw_get_funcs (), cr); + cairo_close_path (cr); + cairo_clip (cr); +} + +static void +hb_cairo_push_clip_rectangle (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + float xmin, float ymin, float xmax, float ymax, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_save (cr); + cairo_rectangle (cr, + (double) xmin, (double) ymin, + (double) (xmax - xmin), (double) (ymax - ymin)); + cairo_clip (cr); +} + +static void +hb_cairo_pop_clip (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_restore (cr); +} + +static void +hb_cairo_push_group (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_save (cr); + cairo_push_group (cr); +} + +static void +hb_cairo_pop_group (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_paint_composite_mode_t mode, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + cairo_pop_group_to_source (cr); + cairo_set_operator (cr, _hb_paint_composite_mode_to_cairo (mode)); + cairo_paint (cr); + + cairo_restore (cr); +} + +static void +hb_cairo_paint_color (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_bool_t use_foreground, + hb_color_t color, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + + if (use_foreground) + { +#ifdef HAVE_CAIRO_USER_SCALED_FONT_GET_FOREGROUND_SOURCE + double r, g, b, a; + cairo_pattern_t *foreground = cairo_user_scaled_font_get_foreground_source (c->scaled_font); + if (cairo_pattern_get_rgba (foreground, &r, &g, &b, &a) == CAIRO_STATUS_SUCCESS) + cairo_set_source_rgba (cr, r, g, b, a * hb_color_get_alpha (color) / 255.); + else +#endif + cairo_set_source_rgba (cr, 0, 0, 0, hb_color_get_alpha (color) / 255.); + } + else + cairo_set_source_rgba (cr, + hb_color_get_red (color) / 255., + hb_color_get_green (color) / 255., + hb_color_get_blue (color) / 255., + hb_color_get_alpha (color) / 255.); + cairo_paint (cr); +} + +static hb_bool_t +hb_cairo_paint_image (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_blob_t *blob, + unsigned width, + unsigned height, + hb_tag_t format, + float slant, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + + return _hb_cairo_paint_glyph_image (c, blob, width, height, format, slant, extents); +} + +static void +hb_cairo_paint_linear_gradient (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_color_line_t *color_line, + float x0, float y0, + float x1, float y1, + float x2, float y2, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + + _hb_cairo_paint_linear_gradient (c, color_line, x0, y0, x1, y1, x2, y2); +} + +static void +hb_cairo_paint_radial_gradient (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_color_line_t *color_line, + float x0, float y0, float r0, + float x1, float y1, float r1, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + + _hb_cairo_paint_radial_gradient (c, color_line, x0, y0, r0, x1, y1, r1); +} + +static void +hb_cairo_paint_sweep_gradient (hb_paint_funcs_t *pfuncs HB_UNUSED, + void *paint_data, + hb_color_line_t *color_line, + float x0, float y0, + float start_angle, float end_angle, + void *user_data HB_UNUSED) +{ + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + + _hb_cairo_paint_sweep_gradient (c, color_line, x0, y0, start_angle, end_angle); +} + +static const cairo_user_data_key_t color_cache_key = {0}; + +static void +_hb_cairo_destroy_map (void *p) +{ + hb_map_destroy ((hb_map_t *) p); +} + +static hb_bool_t +hb_cairo_paint_custom_palette_color (hb_paint_funcs_t *funcs, + void *paint_data, + unsigned int color_index, + hb_color_t *color, + void *user_data HB_UNUSED) +{ +#ifdef HAVE_CAIRO_FONT_OPTIONS_GET_CUSTOM_PALETTE_COLOR + hb_cairo_context_t *c = (hb_cairo_context_t *) paint_data; + cairo_t *cr = c->cr; + +#define HB_DEADBEEF HB_TAG(0xDE,0xAD,0xBE,0xEF) + + hb_map_t *color_cache = c->color_cache; + hb_codepoint_t *v; + if (likely (color_cache && color_cache->has (color_index, &v))) + { + if (*v == HB_DEADBEEF) + return false; + *color = *v; + return true; + } + + cairo_font_options_t *options; + double red, green, blue, alpha; + + options = cairo_font_options_create (); + cairo_get_font_options (cr, options); + if (CAIRO_STATUS_SUCCESS == + cairo_font_options_get_custom_palette_color (options, color_index, + &red, &green, &blue, &alpha)) + { + cairo_font_options_destroy (options); + *color = HB_COLOR (round (255 * blue), + round (255 * green), + round (255 * red), + round (255 * alpha)); + + if (likely (color_cache && *color != HB_DEADBEEF)) + color_cache->set (color_index, *color); + + return true; + } + cairo_font_options_destroy (options); + + if (likely (color_cache)) + color_cache->set (color_index, HB_DEADBEEF); + +#undef HB_DEADBEEF + +#endif + + return false; +} + +static inline void free_static_cairo_paint_funcs (); + +static struct hb_cairo_paint_funcs_lazy_loader_t : hb_paint_funcs_lazy_loader_t +{ + static hb_paint_funcs_t *create () + { + hb_paint_funcs_t *funcs = hb_paint_funcs_create (); + + hb_paint_funcs_set_push_transform_func (funcs, hb_cairo_push_transform, nullptr, nullptr); + hb_paint_funcs_set_pop_transform_func (funcs, hb_cairo_pop_transform, nullptr, nullptr); + hb_paint_funcs_set_push_clip_glyph_func (funcs, hb_cairo_push_clip_glyph, nullptr, nullptr); + hb_paint_funcs_set_push_clip_rectangle_func (funcs, hb_cairo_push_clip_rectangle, nullptr, nullptr); + hb_paint_funcs_set_pop_clip_func (funcs, hb_cairo_pop_clip, nullptr, nullptr); + hb_paint_funcs_set_push_group_func (funcs, hb_cairo_push_group, nullptr, nullptr); + hb_paint_funcs_set_pop_group_func (funcs, hb_cairo_pop_group, nullptr, nullptr); + hb_paint_funcs_set_color_func (funcs, hb_cairo_paint_color, nullptr, nullptr); + hb_paint_funcs_set_image_func (funcs, hb_cairo_paint_image, nullptr, nullptr); + hb_paint_funcs_set_linear_gradient_func (funcs, hb_cairo_paint_linear_gradient, nullptr, nullptr); + hb_paint_funcs_set_radial_gradient_func (funcs, hb_cairo_paint_radial_gradient, nullptr, nullptr); + hb_paint_funcs_set_sweep_gradient_func (funcs, hb_cairo_paint_sweep_gradient, nullptr, nullptr); + hb_paint_funcs_set_custom_palette_color_func (funcs, hb_cairo_paint_custom_palette_color, nullptr, nullptr); + + hb_paint_funcs_make_immutable (funcs); + + hb_atexit (free_static_cairo_paint_funcs); + + return funcs; + } +} static_cairo_paint_funcs; + +static inline +void free_static_cairo_paint_funcs () +{ + static_cairo_paint_funcs.free_instance (); +} + +static hb_paint_funcs_t * +hb_cairo_paint_get_funcs () +{ + return static_cairo_paint_funcs.get_unconst (); +} +#endif + +static const cairo_user_data_key_t hb_cairo_face_user_data_key = {0}; +static const cairo_user_data_key_t hb_cairo_font_user_data_key = {0}; +static const cairo_user_data_key_t hb_cairo_font_init_func_user_data_key = {0}; +static const cairo_user_data_key_t hb_cairo_font_init_user_data_user_data_key = {0}; +static const cairo_user_data_key_t hb_cairo_scale_factor_user_data_key = {0}; + +static void hb_cairo_face_destroy (void *p) { hb_face_destroy ((hb_face_t *) p); } +static void hb_cairo_font_destroy (void *p) { hb_font_destroy ((hb_font_t *) p); } + +static cairo_status_t +hb_cairo_init_scaled_font (cairo_scaled_font_t *scaled_font, + cairo_t *cr HB_UNUSED, + cairo_font_extents_t *extents) +{ + cairo_font_face_t *font_face = cairo_scaled_font_get_font_face (scaled_font); + + hb_font_t *font = (hb_font_t *) cairo_font_face_get_user_data (font_face, + &hb_cairo_font_user_data_key); + + if (!font) + { + hb_face_t *face = (hb_face_t *) cairo_font_face_get_user_data (font_face, + &hb_cairo_face_user_data_key); + font = hb_font_create (face); + +#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,16,0) + cairo_font_options_t *font_options = cairo_font_options_create (); + + // Set variations + cairo_scaled_font_get_font_options (scaled_font, font_options); + const char *variations = cairo_font_options_get_variations (font_options); + hb_vector_t vars; + const char *p = variations; + while (p && *p) + { + const char *end = strpbrk ((char *) p, ", "); + hb_variation_t var; + if (hb_variation_from_string (p, end ? end - p : -1, &var)) + vars.push (var); + p = end ? end + 1 : nullptr; + } + hb_font_set_variations (font, &vars[0], vars.length); + + cairo_font_options_destroy (font_options); +#endif + + // Set scale; Note: should NOT set slant, or we'll double-slant. + unsigned scale_factor = hb_cairo_font_face_get_scale_factor (font_face); + if (scale_factor) + { + cairo_matrix_t font_matrix; + cairo_scaled_font_get_scale_matrix (scaled_font, &font_matrix); + hb_font_set_scale (font, + round (font_matrix.xx * scale_factor), + round (font_matrix.yy * scale_factor)); + } + + auto *init_func = (hb_cairo_font_init_func_t) + cairo_font_face_get_user_data (font_face, + &hb_cairo_font_init_func_user_data_key); + if (init_func) + { + void *user_data = cairo_font_face_get_user_data (font_face, + &hb_cairo_font_init_user_data_user_data_key); + font = init_func (font, scaled_font, user_data); + } + + hb_font_make_immutable (font); + } + + cairo_scaled_font_set_user_data (scaled_font, + &hb_cairo_font_user_data_key, + (void *) hb_font_reference (font), + hb_cairo_font_destroy); + + hb_position_t x_scale, y_scale; + hb_font_get_scale (font, &x_scale, &y_scale); + + hb_font_extents_t hb_extents; + hb_font_get_h_extents (font, &hb_extents); + + extents->ascent = (double) hb_extents.ascender / y_scale; + extents->descent = (double) -hb_extents.descender / y_scale; + extents->height = extents->ascent + extents->descent; + +#ifdef HAVE_CAIRO_USER_FONT_FACE_SET_RENDER_COLOR_GLYPH_FUNC + hb_map_t *color_cache = hb_map_create (); + if (unlikely (CAIRO_STATUS_SUCCESS != cairo_scaled_font_set_user_data (scaled_font, + &color_cache_key, + color_cache, + _hb_cairo_destroy_map))) + hb_map_destroy (color_cache); +#endif + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +hb_cairo_text_to_glyphs (cairo_scaled_font_t *scaled_font, + const char *utf8, + int utf8_len, + cairo_glyph_t **glyphs, + int *num_glyphs, + cairo_text_cluster_t **clusters, + int *num_clusters, + cairo_text_cluster_flags_t *cluster_flags) +{ + hb_font_t *font = (hb_font_t *) cairo_scaled_font_get_user_data (scaled_font, + &hb_cairo_font_user_data_key); + + hb_buffer_t *buffer = hb_buffer_create (); + hb_buffer_add_utf8 (buffer, utf8, utf8_len, 0, utf8_len); + hb_buffer_guess_segment_properties (buffer); + hb_shape (font, buffer, nullptr, 0); + + hb_cairo_glyphs_from_buffer (buffer, + true, + font->x_scale, font->y_scale, + 0., 0., + utf8, utf8_len, + glyphs, (unsigned *) num_glyphs, + clusters, (unsigned *) num_clusters, + cluster_flags); + + hb_buffer_destroy (buffer); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +hb_cairo_render_glyph (cairo_scaled_font_t *scaled_font, + unsigned long glyph, + cairo_t *cr, + cairo_text_extents_t *extents) +{ + hb_font_t *font = (hb_font_t *) cairo_scaled_font_get_user_data (scaled_font, + &hb_cairo_font_user_data_key); + + hb_position_t x_scale, y_scale; + hb_font_get_scale (font, &x_scale, &y_scale); + cairo_scale (cr, +1./x_scale, -1./y_scale); + + hb_font_draw_glyph (font, glyph, hb_cairo_draw_get_funcs (), cr); + + cairo_fill (cr); + + return CAIRO_STATUS_SUCCESS; +} + +#ifdef HAVE_CAIRO_USER_FONT_FACE_SET_RENDER_COLOR_GLYPH_FUNC + +static cairo_status_t +hb_cairo_render_color_glyph (cairo_scaled_font_t *scaled_font, + unsigned long glyph, + cairo_t *cr, + cairo_text_extents_t *extents) +{ + hb_font_t *font = (hb_font_t *) cairo_scaled_font_get_user_data (scaled_font, + &hb_cairo_font_user_data_key); + + unsigned int palette = 0; +#ifdef CAIRO_COLOR_PALETTE_DEFAULT + cairo_font_options_t *options = cairo_font_options_create (); + cairo_scaled_font_get_font_options (scaled_font, options); + palette = cairo_font_options_get_color_palette (options); + cairo_font_options_destroy (options); +#endif + + hb_color_t color = HB_COLOR (0, 0, 0, 255); + hb_position_t x_scale, y_scale; + hb_font_get_scale (font, &x_scale, &y_scale); + cairo_scale (cr, +1./x_scale, -1./y_scale); + + hb_cairo_context_t c; + c.scaled_font = scaled_font; + c.cr = cr; + c.color_cache = (hb_map_t *) cairo_scaled_font_get_user_data (scaled_font, &color_cache_key); + + hb_font_paint_glyph (font, glyph, hb_cairo_paint_get_funcs (), &c, palette, color); + + + return CAIRO_STATUS_SUCCESS; +} + +#endif + +static cairo_font_face_t * +user_font_face_create (hb_face_t *face) +{ + cairo_font_face_t *cairo_face; + + cairo_face = cairo_user_font_face_create (); + cairo_user_font_face_set_init_func (cairo_face, hb_cairo_init_scaled_font); + cairo_user_font_face_set_text_to_glyphs_func (cairo_face, hb_cairo_text_to_glyphs); + cairo_user_font_face_set_render_glyph_func (cairo_face, hb_cairo_render_glyph); +#ifdef HAVE_CAIRO_USER_FONT_FACE_SET_RENDER_COLOR_GLYPH_FUNC + if (hb_ot_color_has_png (face) || hb_ot_color_has_layers (face) || hb_ot_color_has_paint (face)) + cairo_user_font_face_set_render_color_glyph_func (cairo_face, hb_cairo_render_color_glyph); +#endif + + if (unlikely (CAIRO_STATUS_SUCCESS != cairo_font_face_set_user_data (cairo_face, + &hb_cairo_face_user_data_key, + (void *) hb_face_reference (face), + hb_cairo_face_destroy))) + hb_face_destroy (face); + + return cairo_face; +} + +/** + * hb_cairo_font_face_create_for_font: + * @font: a #hb_font_t + * + * Creates a #cairo_font_face_t for rendering text according + * to @font. + * + * Note that the scale of @font does not affect the rendering, + * but the variations and slant that are set on @font do. + * + * Returns: (transfer full): a newly created #cairo_font_face_t + * + * Since: 7.0.0 + */ +cairo_font_face_t * +hb_cairo_font_face_create_for_font (hb_font_t *font) +{ + hb_font_make_immutable (font); + + auto *cairo_face = user_font_face_create (font->face); + + if (unlikely (CAIRO_STATUS_SUCCESS != cairo_font_face_set_user_data (cairo_face, + &hb_cairo_font_user_data_key, + (void *) hb_font_reference (font), + hb_cairo_font_destroy))) + hb_font_destroy (font); + + return cairo_face; +} + +/** + * hb_cairo_font_face_get_font: + * @font_face: a #cairo_font_face_t + * + * Gets the #hb_font_t that @font_face was created from. + * + * Returns: (nullable) (transfer none): the #hb_font_t that @font_face was created from + * + * Since: 7.0.0 + */ +hb_font_t * +hb_cairo_font_face_get_font (cairo_font_face_t *font_face) +{ + return (hb_font_t *) cairo_font_face_get_user_data (font_face, + &hb_cairo_font_user_data_key); +} + +/** + * hb_cairo_font_face_create_for_face: + * @face: a #hb_face_t + * + * Creates a #cairo_font_face_t for rendering text according + * to @face. + * + * Returns: (transfer full): a newly created #cairo_font_face_t + * + * Since: 7.0.0 + */ +cairo_font_face_t * +hb_cairo_font_face_create_for_face (hb_face_t *face) +{ + hb_face_make_immutable (face); + + return user_font_face_create (face); +} + +/** + * hb_cairo_font_face_get_face: + * @font_face: a #cairo_font_face_t + * + * Gets the #hb_face_t associated with @font_face. + * + * Returns: (nullable) (transfer none): the #hb_face_t associated with @font_face + * + * Since: 7.0.0 + */ +hb_face_t * +hb_cairo_font_face_get_face (cairo_font_face_t *font_face) +{ + return (hb_face_t *) cairo_font_face_get_user_data (font_face, + &hb_cairo_face_user_data_key); +} + +/** + * hb_cairo_font_face_set_font_init_func: + * @font_face: a #cairo_font_face_t + * @func: The virtual method to use + * @user_data: user data accompanying the method + * @destroy: function to call when @user_data is not needed anymore + * + * Set the virtual method to be called when a cairo + * face created using hb_cairo_font_face_create_for_face() + * creates an #hb_font_t for a #cairo_scaled_font_t. + * + * Since: 7.0.0 + */ +void +hb_cairo_font_face_set_font_init_func (cairo_font_face_t *font_face, + hb_cairo_font_init_func_t func, + void *user_data, + hb_destroy_func_t destroy) +{ + cairo_font_face_set_user_data (font_face, + &hb_cairo_font_init_func_user_data_key, + (void *) func, + nullptr); + if (unlikely (CAIRO_STATUS_SUCCESS != cairo_font_face_set_user_data (font_face, + &hb_cairo_font_init_user_data_user_data_key, + (void *) user_data, + destroy)) && destroy) + { + destroy (user_data); + cairo_font_face_set_user_data (font_face, + &hb_cairo_font_init_func_user_data_key, + nullptr, + nullptr); + } +} + +/** + * hb_cairo_scaled_font_get_font: + * @scaled_font: a #cairo_scaled_font_t + * + * Gets the #hb_font_t associated with @scaled_font. + * + * Returns: (nullable) (transfer none): the #hb_font_t associated with @scaled_font + * + * Since: 7.0.0 + */ +hb_font_t * +hb_cairo_scaled_font_get_font (cairo_scaled_font_t *scaled_font) +{ + return (hb_font_t *) cairo_scaled_font_get_user_data (scaled_font, &hb_cairo_font_user_data_key); +} + + +/** + * hb_cairo_font_face_set_scale_factor: + * @scale_factor: The scale factor to use. See below + * @font_face: a #cairo_font_face_t + * + * Sets the scale factor of the @font_face. Default scale + * factor is zero. + * + * When a #cairo_font_face_t is created from a #hb_face_t using + * hb_cairo_font_face_create_for_face(), such face will create + * #hb_font_t objects during scaled-font creation. The scale + * factor defines how the scale set on such #hb_font_t objects + * relates to the font-matrix (as such font size) of the cairo + * scaled-font. + * + * If the scale-factor is zero (default), then the scale of the + * #hb_font_t object will be left at default, which is the UPEM + * value of the respective #hb_face_t. + * + * If the scale-factor is set to non-zero, then the X and Y scale + * of the #hb_font_t object will be respectively set to the + * @scale_factor times the xx and yy elements of the scale-matrix + * of the cairo scaled-font being created. + * + * When using the hb_cairo_glyphs_from_buffer() API to convert the + * HarfBuzz glyph buffer that resulted from shaping with such a #hb_font_t, + * if the scale-factor was non-zero, you can pass it directly to + * that API as both X and Y scale factors. + * + * If the scale-factor was zero however, or the cairo face was + * created using the alternative constructor + * hb_cairo_font_face_create_for_font(), you need to calculate the + * correct X/Y scale-factors to pass to hb_cairo_glyphs_from_buffer() + * by dividing the #hb_font_t X/Y scale-factors by the + * cairo scaled-font's scale-matrix XX/YY components respectively + * and use those values. Or if you know that relationship offhand + * (because you set the scale of the #hb_font_t yourself), use + * the conversion rate involved. + * + * Since: 7.0.0 + */ +void +hb_cairo_font_face_set_scale_factor (cairo_font_face_t *font_face, + unsigned int scale_factor) +{ + cairo_font_face_set_user_data (font_face, + &hb_cairo_scale_factor_user_data_key, + (void *) (uintptr_t) scale_factor, + nullptr); +} + +/** + * hb_cairo_font_face_get_scale_factor: + * @font_face: a #cairo_font_face_t + * + * Gets the scale factor set on the @font_face. Defaults to zero. + * See hb_cairo_font_face_set_scale_factor() for details. + * + * Returns: the scale factor of @font_face + * + * Since: 7.0.0 + */ +unsigned int +hb_cairo_font_face_get_scale_factor (cairo_font_face_t *font_face) +{ + return (unsigned int) (uintptr_t) + cairo_font_face_get_user_data (font_face, + &hb_cairo_scale_factor_user_data_key); +} + + +/** + * hb_cairo_glyphs_from_buffer: + * @buffer: a #hb_buffer_t containing glyphs + * @utf8_clusters: `true` if @buffer clusters are in bytes, instead of characters + * @x_scale_factor: scale factor to divide #hb_position_t Y values by + * @y_scale_factor: scale factor to divide #hb_position_t X values by + * @x: X position to place first glyph + * @y: Y position to place first glyph + * @utf8: (nullable): the text that was shaped in @buffer + * @utf8_len: the length of @utf8 in bytes + * @glyphs: (out): return location for an array of #cairo_glyph_t + * @num_glyphs: (inout): return location for the length of @glyphs + * @clusters: (out) (nullable): return location for an array of cluster positions + * @num_clusters: (inout) (nullable): return location for the length of @clusters + * @cluster_flags: (out) (nullable): return location for cluster flags + * + * Extracts information from @buffer in a form that can be + * passed to cairo_show_text_glyphs() or cairo_show_glyphs(). + * This API is modeled after cairo_scaled_font_text_to_glyphs() and + * cairo_user_scaled_font_text_to_glyphs_func_t. + * + * The @num_glyphs argument should be preset to the number of glyph entries available + * in the @glyphs buffer. If the @glyphs buffer is `NULL`, the value of + * @num_glyphs must be zero. If the provided glyph array is too short for + * the conversion (or for convenience), a new glyph array may be allocated + * using cairo_glyph_allocate() and placed in @glyphs. Upon return, + * @num_glyphs should contain the number of generated glyphs. If the value + * @glyphs points at has changed after the call, the caller will free the + * allocated glyph array using cairo_glyph_free(). The caller will also free + * the original value of @glyphs, so this function shouldn't do so. + * + * If @clusters is not `NULL`, then @num_clusters and @cluster_flags + * should not be either, and @utf8 must be provided, and cluster + * mapping will be computed. The semantics of how + * cluster array allocation works is similar to the glyph array. That is, + * if @clusters initially points to a non-`NULL` value, that array may be used + * as a cluster buffer, and @num_clusters points to the number of cluster + * entries available there. If the provided cluster array is too short for + * the conversion (or for convenience), a new cluster array may be allocated + * using cairo_text_cluster_allocate() and placed in @clusters. In this case, + * the original value of @clusters will still be freed by the caller. Upon + * return, @num_clusters will contain the number of generated clusters. + * If the value @clusters points at has changed after the call, the caller + * will free the allocated cluster array using cairo_text_cluster_free(). + * + * See hb_cairo_font_face_set_scale_factor() for the details of + * the @scale_factor argument. + * + * The returned @glyphs vector actually has `@num_glyphs + 1` entries in + * it and the x,y values of the extra entry at the end add up the advance + * x,y of all the glyphs in the @buffer. + * + * Since: 7.0.0 + */ +void +hb_cairo_glyphs_from_buffer (hb_buffer_t *buffer, + hb_bool_t utf8_clusters, + double x_scale_factor, + double y_scale_factor, + double x, + double y, + const char *utf8, + int utf8_len, + cairo_glyph_t **glyphs, + unsigned int *num_glyphs, + cairo_text_cluster_t **clusters, + unsigned int *num_clusters, + cairo_text_cluster_flags_t *cluster_flags) +{ + if (utf8 && utf8_len < 0) + utf8_len = strlen (utf8); + + unsigned orig_num_glyphs = *num_glyphs; + *num_glyphs = hb_buffer_get_length (buffer); + hb_glyph_info_t *hb_glyph = hb_buffer_get_glyph_infos (buffer, nullptr); + hb_glyph_position_t *hb_position = hb_buffer_get_glyph_positions (buffer, nullptr); + if (orig_num_glyphs < *num_glyphs + 1) + *glyphs = cairo_glyph_allocate (*num_glyphs + 1); + + if (clusters && utf8) + { + unsigned orig_num_clusters = *num_clusters; + *num_clusters = *num_glyphs ? 1 : 0; + for (unsigned int i = 1; i < *num_glyphs; i++) + if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) + (*num_clusters)++; + if (orig_num_clusters < *num_clusters) + *clusters = cairo_text_cluster_allocate (*num_clusters); + } + + double x_scale = x_scale_factor ? 1. / x_scale_factor : 0.; + double y_scale = y_scale_factor ? 1. / y_scale_factor : 0.; + hb_position_t hx = 0, hy = 0; + int i; + for (i = 0; i < (int) *num_glyphs; i++) + { + (*glyphs)[i].index = hb_glyph[i].codepoint; + (*glyphs)[i].x = x + (+hb_position->x_offset + hx) * x_scale; + (*glyphs)[i].y = y + (-hb_position->y_offset + hy) * y_scale; + hx += hb_position->x_advance; + hy += -hb_position->y_advance; + + hb_position++; + } + (*glyphs)[i].index = -1; + (*glyphs)[i].x = round (hx * x_scale); + (*glyphs)[i].y = round (hy * y_scale); + + if (clusters && *num_clusters && utf8) + { + memset ((void *) *clusters, 0, *num_clusters * sizeof ((*clusters)[0])); + hb_bool_t backward = HB_DIRECTION_IS_BACKWARD (hb_buffer_get_direction (buffer)); + *cluster_flags = backward ? CAIRO_TEXT_CLUSTER_FLAG_BACKWARD : (cairo_text_cluster_flags_t) 0; + unsigned int cluster = 0; + const char *start = utf8, *end; + (*clusters)[cluster].num_glyphs++; + if (backward) + { + for (i = *num_glyphs - 2; i >= 0; i--) + { + if (hb_glyph[i].cluster != hb_glyph[i+1].cluster) + { + assert (hb_glyph[i].cluster > hb_glyph[i+1].cluster); + if (utf8_clusters) + end = start + hb_glyph[i].cluster - hb_glyph[i+1].cluster; + else + end = (const char *) hb_utf_offset_to_pointer ((const uint8_t *) start, + (signed) (hb_glyph[i].cluster - hb_glyph[i+1].cluster)); + (*clusters)[cluster].num_bytes = end - start; + start = end; + cluster++; + } + (*clusters)[cluster].num_glyphs++; + } + (*clusters)[cluster].num_bytes = utf8 + utf8_len - start; + } + else + { + for (i = 1; i < (int) *num_glyphs; i++) + { + if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) + { + assert (hb_glyph[i].cluster > hb_glyph[i-1].cluster); + if (utf8_clusters) + end = start + hb_glyph[i].cluster - hb_glyph[i-1].cluster; + else + end = (const char *) hb_utf_offset_to_pointer ((const uint8_t *) start, + (signed) (hb_glyph[i].cluster - hb_glyph[i-1].cluster)); + (*clusters)[cluster].num_bytes = end - start; + start = end; + cluster++; + } + (*clusters)[cluster].num_glyphs++; + } + (*clusters)[cluster].num_bytes = utf8 + utf8_len - start; + } + } + else if (num_clusters) + *num_clusters = 0; +} + +#endif diff --git a/gfx/harfbuzz/src/hb-cairo.h b/gfx/harfbuzz/src/hb-cairo.h new file mode 100644 index 0000000000..21e284c8f9 --- /dev/null +++ b/gfx/harfbuzz/src/hb-cairo.h @@ -0,0 +1,99 @@ +/* + * Copyright © 2022 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Matthias Clasen + */ + +#ifndef HB_CAIRO_H +#define HB_CAIRO_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + +HB_EXTERN cairo_font_face_t * +hb_cairo_font_face_create_for_font (hb_font_t *font); + +HB_EXTERN hb_font_t * +hb_cairo_font_face_get_font (cairo_font_face_t *font_face); + +HB_EXTERN cairo_font_face_t * +hb_cairo_font_face_create_for_face (hb_face_t *face); + +HB_EXTERN hb_face_t * +hb_cairo_font_face_get_face (cairo_font_face_t *font_face); + +/** + * hb_cairo_font_init_func_t: + * @font: The #hb_font_t being created + * @scaled_font: The respective #cairo_scaled_font_t + * @user_data: User data accompanying this method + * + * The type of a virtual method to be called when a cairo + * face created using hb_cairo_font_face_create_for_face() + * creates an #hb_font_t for a #cairo_scaled_font_t. + * + * Return value: the #hb_font_t value to use; in most cases same as @font + * + * Since: 7.0.0 + */ +typedef hb_font_t * (*hb_cairo_font_init_func_t) (hb_font_t *font, + cairo_scaled_font_t *scaled_font, + void *user_data); + +HB_EXTERN void +hb_cairo_font_face_set_font_init_func (cairo_font_face_t *font_face, + hb_cairo_font_init_func_t func, + void *user_data, + hb_destroy_func_t destroy); + +HB_EXTERN hb_font_t * +hb_cairo_scaled_font_get_font (cairo_scaled_font_t *scaled_font); + +HB_EXTERN void +hb_cairo_font_face_set_scale_factor (cairo_font_face_t *font_face, + unsigned int scale_factor); + +HB_EXTERN unsigned int +hb_cairo_font_face_get_scale_factor (cairo_font_face_t *font_face); + +HB_EXTERN void +hb_cairo_glyphs_from_buffer (hb_buffer_t *buffer, + hb_bool_t utf8_clusters, + double x_scale_factor, + double y_scale_factor, + double x, + double y, + const char *utf8, + int utf8_len, + cairo_glyph_t **glyphs, + unsigned int *num_glyphs, + cairo_text_cluster_t **clusters, + unsigned int *num_clusters, + cairo_text_cluster_flags_t *cluster_flags); + +HB_END_DECLS + +#endif /* HB_CAIRO_H */ diff --git a/gfx/harfbuzz/src/hb-cff-interp-common.hh b/gfx/harfbuzz/src/hb-cff-interp-common.hh new file mode 100644 index 0000000000..949bfebf9b --- /dev/null +++ b/gfx/harfbuzz/src/hb-cff-interp-common.hh @@ -0,0 +1,643 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_CFF_INTERP_COMMON_HH +#define HB_CFF_INTERP_COMMON_HH + +namespace CFF { + +using namespace OT; + +typedef unsigned int op_code_t; + + +/* === Dict operators === */ + +/* One byte operators (0-31) */ +#define OpCode_version 0 /* CFF Top */ +#define OpCode_Notice 1 /* CFF Top */ +#define OpCode_FullName 2 /* CFF Top */ +#define OpCode_FamilyName 3 /* CFF Top */ +#define OpCode_Weight 4 /* CFF Top */ +#define OpCode_FontBBox 5 /* CFF Top */ +#define OpCode_BlueValues 6 /* CFF Private, CFF2 Private */ +#define OpCode_OtherBlues 7 /* CFF Private, CFF2 Private */ +#define OpCode_FamilyBlues 8 /* CFF Private, CFF2 Private */ +#define OpCode_FamilyOtherBlues 9 /* CFF Private, CFF2 Private */ +#define OpCode_StdHW 10 /* CFF Private, CFF2 Private */ +#define OpCode_StdVW 11 /* CFF Private, CFF2 Private */ +#define OpCode_escape 12 /* All. Shared with CS */ +#define OpCode_UniqueID 13 /* CFF Top */ +#define OpCode_XUID 14 /* CFF Top */ +#define OpCode_charset 15 /* CFF Top (0) */ +#define OpCode_Encoding 16 /* CFF Top (0) */ +#define OpCode_CharStrings 17 /* CFF Top, CFF2 Top */ +#define OpCode_Private 18 /* CFF Top, CFF2 FD */ +#define OpCode_Subrs 19 /* CFF Private, CFF2 Private */ +#define OpCode_defaultWidthX 20 /* CFF Private (0) */ +#define OpCode_nominalWidthX 21 /* CFF Private (0) */ +#define OpCode_vsindexdict 22 /* CFF2 Private/CS */ +#define OpCode_blenddict 23 /* CFF2 Private/CS */ +#define OpCode_vstore 24 /* CFF2 Top */ +#define OpCode_reserved25 25 +#define OpCode_reserved26 26 +#define OpCode_reserved27 27 + +/* Numbers */ +#define OpCode_shortint 28 /* 16-bit integer, All */ +#define OpCode_longintdict 29 /* 32-bit integer, All */ +#define OpCode_BCD 30 /* Real number, CFF2 Top/FD */ +#define OpCode_reserved31 31 + +/* 1-byte integers */ +#define OpCode_OneByteIntFirst 32 /* All. beginning of the range of first byte ints */ +#define OpCode_OneByteIntLast 246 /* All. ending of the range of first byte int */ + +/* 2-byte integers */ +#define OpCode_TwoBytePosInt0 247 /* All. first byte of two byte positive int (+108 to +1131) */ +#define OpCode_TwoBytePosInt1 248 +#define OpCode_TwoBytePosInt2 249 +#define OpCode_TwoBytePosInt3 250 + +#define OpCode_TwoByteNegInt0 251 /* All. first byte of two byte negative int (-1131 to -108) */ +#define OpCode_TwoByteNegInt1 252 +#define OpCode_TwoByteNegInt2 253 +#define OpCode_TwoByteNegInt3 254 + +/* Two byte escape operators 12, (0-41) */ +#define OpCode_ESC_Base 256 +#define Make_OpCode_ESC(byte2) ((op_code_t)(OpCode_ESC_Base + (byte2))) + +inline op_code_t Unmake_OpCode_ESC (op_code_t op) { return (op_code_t)(op - OpCode_ESC_Base); } +inline bool Is_OpCode_ESC (op_code_t op) { return op >= OpCode_ESC_Base; } +inline unsigned int OpCode_Size (op_code_t op) { return Is_OpCode_ESC (op) ? 2: 1; } + +#define OpCode_Copyright Make_OpCode_ESC(0) /* CFF Top */ +#define OpCode_isFixedPitch Make_OpCode_ESC(1) /* CFF Top (false) */ +#define OpCode_ItalicAngle Make_OpCode_ESC(2) /* CFF Top (0) */ +#define OpCode_UnderlinePosition Make_OpCode_ESC(3) /* CFF Top (-100) */ +#define OpCode_UnderlineThickness Make_OpCode_ESC(4) /* CFF Top (50) */ +#define OpCode_PaintType Make_OpCode_ESC(5) /* CFF Top (0) */ +#define OpCode_CharstringType Make_OpCode_ESC(6) /* CFF Top (2) */ +#define OpCode_FontMatrix Make_OpCode_ESC(7) /* CFF Top, CFF2 Top (.001 0 0 .001 0 0)*/ +#define OpCode_StrokeWidth Make_OpCode_ESC(8) /* CFF Top (0) */ +#define OpCode_BlueScale Make_OpCode_ESC(9) /* CFF Private, CFF2 Private (0.039625) */ +#define OpCode_BlueShift Make_OpCode_ESC(10) /* CFF Private, CFF2 Private (7) */ +#define OpCode_BlueFuzz Make_OpCode_ESC(11) /* CFF Private, CFF2 Private (1) */ +#define OpCode_StemSnapH Make_OpCode_ESC(12) /* CFF Private, CFF2 Private */ +#define OpCode_StemSnapV Make_OpCode_ESC(13) /* CFF Private, CFF2 Private */ +#define OpCode_ForceBold Make_OpCode_ESC(14) /* CFF Private (false) */ +#define OpCode_reservedESC15 Make_OpCode_ESC(15) +#define OpCode_reservedESC16 Make_OpCode_ESC(16) +#define OpCode_LanguageGroup Make_OpCode_ESC(17) /* CFF Private, CFF2 Private (0) */ +#define OpCode_ExpansionFactor Make_OpCode_ESC(18) /* CFF Private, CFF2 Private (0.06) */ +#define OpCode_initialRandomSeed Make_OpCode_ESC(19) /* CFF Private (0) */ +#define OpCode_SyntheticBase Make_OpCode_ESC(20) /* CFF Top */ +#define OpCode_PostScript Make_OpCode_ESC(21) /* CFF Top */ +#define OpCode_BaseFontName Make_OpCode_ESC(22) /* CFF Top */ +#define OpCode_BaseFontBlend Make_OpCode_ESC(23) /* CFF Top */ +#define OpCode_reservedESC24 Make_OpCode_ESC(24) +#define OpCode_reservedESC25 Make_OpCode_ESC(25) +#define OpCode_reservedESC26 Make_OpCode_ESC(26) +#define OpCode_reservedESC27 Make_OpCode_ESC(27) +#define OpCode_reservedESC28 Make_OpCode_ESC(28) +#define OpCode_reservedESC29 Make_OpCode_ESC(29) +#define OpCode_ROS Make_OpCode_ESC(30) /* CFF Top_CID */ +#define OpCode_CIDFontVersion Make_OpCode_ESC(31) /* CFF Top_CID (0) */ +#define OpCode_CIDFontRevision Make_OpCode_ESC(32) /* CFF Top_CID (0) */ +#define OpCode_CIDFontType Make_OpCode_ESC(33) /* CFF Top_CID (0) */ +#define OpCode_CIDCount Make_OpCode_ESC(34) /* CFF Top_CID (8720) */ +#define OpCode_UIDBase Make_OpCode_ESC(35) /* CFF Top_CID */ +#define OpCode_FDArray Make_OpCode_ESC(36) /* CFF Top_CID, CFF2 Top */ +#define OpCode_FDSelect Make_OpCode_ESC(37) /* CFF Top_CID, CFF2 Top */ +#define OpCode_FontName Make_OpCode_ESC(38) /* CFF Top_CID */ + + +/* === CharString operators === */ + +#define OpCode_hstem 1 /* CFF, CFF2 */ +#define OpCode_Reserved2 2 +#define OpCode_vstem 3 /* CFF, CFF2 */ +#define OpCode_vmoveto 4 /* CFF, CFF2 */ +#define OpCode_rlineto 5 /* CFF, CFF2 */ +#define OpCode_hlineto 6 /* CFF, CFF2 */ +#define OpCode_vlineto 7 /* CFF, CFF2 */ +#define OpCode_rrcurveto 8 /* CFF, CFF2 */ +#define OpCode_Reserved9 9 +#define OpCode_callsubr 10 /* CFF, CFF2 */ +#define OpCode_return 11 /* CFF */ +//#define OpCode_escape 12 /* CFF, CFF2 */ +#define OpCode_Reserved13 13 +#define OpCode_endchar 14 /* CFF */ +#define OpCode_vsindexcs 15 /* CFF2 */ +#define OpCode_blendcs 16 /* CFF2 */ +#define OpCode_Reserved17 17 +#define OpCode_hstemhm 18 /* CFF, CFF2 */ +#define OpCode_hintmask 19 /* CFF, CFF2 */ +#define OpCode_cntrmask 20 /* CFF, CFF2 */ +#define OpCode_rmoveto 21 /* CFF, CFF2 */ +#define OpCode_hmoveto 22 /* CFF, CFF2 */ +#define OpCode_vstemhm 23 /* CFF, CFF2 */ +#define OpCode_rcurveline 24 /* CFF, CFF2 */ +#define OpCode_rlinecurve 25 /* CFF, CFF2 */ +#define OpCode_vvcurveto 26 /* CFF, CFF2 */ +#define OpCode_hhcurveto 27 /* CFF, CFF2 */ +//#define OpCode_shortint 28 /* CFF, CFF2 */ +#define OpCode_callgsubr 29 /* CFF, CFF2 */ +#define OpCode_vhcurveto 30 /* CFF, CFF2 */ +#define OpCode_hvcurveto 31 /* CFF, CFF2 */ + +#define OpCode_fixedcs 255 /* 32-bit fixed */ + +/* Two byte escape operators 12, (0-41) */ +#define OpCode_dotsection Make_OpCode_ESC(0) /* CFF (obsoleted) */ +#define OpCode_ReservedESC1 Make_OpCode_ESC(1) +#define OpCode_ReservedESC2 Make_OpCode_ESC(2) +#define OpCode_and Make_OpCode_ESC(3) /* CFF */ +#define OpCode_or Make_OpCode_ESC(4) /* CFF */ +#define OpCode_not Make_OpCode_ESC(5) /* CFF */ +#define OpCode_ReservedESC6 Make_OpCode_ESC(6) +#define OpCode_ReservedESC7 Make_OpCode_ESC(7) +#define OpCode_ReservedESC8 Make_OpCode_ESC(8) +#define OpCode_abs Make_OpCode_ESC(9) /* CFF */ +#define OpCode_add Make_OpCode_ESC(10) /* CFF */ +#define OpCode_sub Make_OpCode_ESC(11) /* CFF */ +#define OpCode_div Make_OpCode_ESC(12) /* CFF */ +#define OpCode_ReservedESC13 Make_OpCode_ESC(13) +#define OpCode_neg Make_OpCode_ESC(14) /* CFF */ +#define OpCode_eq Make_OpCode_ESC(15) /* CFF */ +#define OpCode_ReservedESC16 Make_OpCode_ESC(16) +#define OpCode_ReservedESC17 Make_OpCode_ESC(17) +#define OpCode_drop Make_OpCode_ESC(18) /* CFF */ +#define OpCode_ReservedESC19 Make_OpCode_ESC(19) +#define OpCode_put Make_OpCode_ESC(20) /* CFF */ +#define OpCode_get Make_OpCode_ESC(21) /* CFF */ +#define OpCode_ifelse Make_OpCode_ESC(22) /* CFF */ +#define OpCode_random Make_OpCode_ESC(23) /* CFF */ +#define OpCode_mul Make_OpCode_ESC(24) /* CFF */ +//#define OpCode_reservedESC25 Make_OpCode_ESC(25) +#define OpCode_sqrt Make_OpCode_ESC(26) /* CFF */ +#define OpCode_dup Make_OpCode_ESC(27) /* CFF */ +#define OpCode_exch Make_OpCode_ESC(28) /* CFF */ +#define OpCode_index Make_OpCode_ESC(29) /* CFF */ +#define OpCode_roll Make_OpCode_ESC(30) /* CFF */ +#define OpCode_reservedESC31 Make_OpCode_ESC(31) +#define OpCode_reservedESC32 Make_OpCode_ESC(32) +#define OpCode_reservedESC33 Make_OpCode_ESC(33) +#define OpCode_hflex Make_OpCode_ESC(34) /* CFF, CFF2 */ +#define OpCode_flex Make_OpCode_ESC(35) /* CFF, CFF2 */ +#define OpCode_hflex1 Make_OpCode_ESC(36) /* CFF, CFF2 */ +#define OpCode_flex1 Make_OpCode_ESC(37) /* CFF, CFF2 */ + + +#define OpCode_Invalid 0xFFFFu + + +struct number_t +{ + void set_int (int v) { value = v; } + int to_int () const { return value; } + + void set_fixed (int32_t v) { value = v / 65536.0; } + int32_t to_fixed () const { return value * 65536.0; } + + void set_real (double v) { value = v; } + double to_real () const { return value; } + + bool in_int_range () const + { return ((double) (int16_t) to_int () == value); } + + bool operator > (const number_t &n) const { return value > n.to_real (); } + bool operator < (const number_t &n) const { return n > *this; } + bool operator >= (const number_t &n) const { return !(*this < n); } + bool operator <= (const number_t &n) const { return !(*this > n); } + + const number_t &operator += (const number_t &n) + { + set_real (to_real () + n.to_real ()); + + return *this; + } + + protected: + double value = 0.; +}; + +/* byte string */ +struct UnsizedByteStr : UnsizedArrayOf +{ + hb_ubytes_t as_ubytes (unsigned l) const + { return hb_ubytes_t ((const unsigned char *) this, l); } + + // encode 2-byte int (Dict/CharString) or 4-byte int (Dict) + template + static bool serialize_int (hb_serialize_context_t *c, op_code_t intOp, V value) + { + TRACE_SERIALIZE (this); + + HBUINT8 *p = c->allocate_size (1); + if (unlikely (!p)) return_trace (false); + *p = intOp; + + T *ip = c->allocate_size (T::static_size); + if (unlikely (!ip)) return_trace (false); + return_trace (c->check_assign (*ip, value, HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + + template + static bool serialize_int4 (hb_serialize_context_t *c, V value) + { return serialize_int (c, OpCode_longintdict, value); } + + template + static bool serialize_int2 (hb_serialize_context_t *c, V value) + { return serialize_int (c, OpCode_shortint, value); } + + /* Defining null_size allows a Null object may be created. Should be safe because: + * A descendent struct Dict uses a Null pointer to indicate a missing table, + * checked before access. + */ + DEFINE_SIZE_MIN(0); +}; + +/* A byte string associated with the current offset and an error condition */ +struct byte_str_ref_t +{ + byte_str_ref_t () + : str () {} + + byte_str_ref_t (const hb_ubytes_t &str_, unsigned int offset_ = 0) + : str (str_) { set_offset (offset_); } + + void reset (const hb_ubytes_t &str_, unsigned int offset_ = 0) + { + str = str_; + set_offset (offset_); + } + + const unsigned char& operator [] (int i) { + if (unlikely ((unsigned int) (get_offset () + i) >= str.length)) + { + set_error (); + return Null (unsigned char); + } + return str.arrayZ[get_offset () + i]; + } + + unsigned char head_unchecked () const { return str.arrayZ[get_offset ()]; } + + /* Conversion to hb_ubytes_t */ + operator hb_ubytes_t () const { return str.sub_array (get_offset ()); } + + hb_ubytes_t sub_array (unsigned int offset_, unsigned int len_) const + { return str.sub_array (offset_, len_); } + + bool avail (unsigned int count=1) const + { return get_offset () + count <= str.length; } + void inc (unsigned int count=1) + { + /* Automatically puts us in error if count is out-of-range. */ + set_offset (get_offset () + count); + } + + /* We (ab)use ubytes backwards_length as a cursor (called offset), + * as well as to store error condition. */ + + unsigned get_offset () const { return str.backwards_length; } + void set_offset (unsigned offset) { str.backwards_length = offset; } + + void set_error () { str.backwards_length = str.length + 1; } + bool in_error () const { return str.backwards_length > str.length; } + + unsigned total_size () const { return str.length; } + + protected: + hb_ubytes_t str; +}; + +using byte_str_array_t = hb_vector_t; + +/* stack */ +template +struct cff_stack_t +{ + ELEM& operator [] (unsigned int i) + { + if (unlikely (i >= count)) + { + set_error (); + return Crap (ELEM); + } + return elements[i]; + } + + void push (const ELEM &v) + { + if (likely (count < LIMIT)) + elements[count++] = v; + else + set_error (); + } + ELEM &push () + { + if (likely (count < LIMIT)) + return elements[count++]; + else + { + set_error (); + return Crap (ELEM); + } + } + + ELEM& pop () + { + if (likely (count > 0)) + return elements[--count]; + else + { + set_error (); + return Crap (ELEM); + } + } + void pop (unsigned int n) + { + if (likely (count >= n)) + count -= n; + else + set_error (); + } + + const ELEM& peek () + { + if (unlikely (count == 0)) + { + set_error (); + return Null (ELEM); + } + return elements[count - 1]; + } + + void unpop () + { + if (likely (count < LIMIT)) + count++; + else + set_error (); + } + + void clear () { count = 0; } + + bool in_error () const { return (error); } + void set_error () { error = true; } + + unsigned int get_count () const { return count; } + bool is_empty () const { return !count; } + + hb_array_t sub_array (unsigned start, unsigned length) const + { return hb_array_t (elements).sub_array (start, length); } + + private: + bool error = false; + unsigned int count = 0; + ELEM elements[LIMIT]; +}; + +/* argument stack */ +template +struct arg_stack_t : cff_stack_t +{ + void push_int (int v) + { + ARG &n = S::push (); + n.set_int (v); + } + + void push_fixed (int32_t v) + { + ARG &n = S::push (); + n.set_fixed (v); + } + + void push_real (double v) + { + ARG &n = S::push (); + n.set_real (v); + } + + ARG& pop_num () { return this->pop (); } + + int pop_int () { return this->pop ().to_int (); } + + unsigned int pop_uint () + { + int i = pop_int (); + if (unlikely (i < 0)) + { + i = 0; + S::set_error (); + } + return (unsigned) i; + } + + void push_longint_from_substr (byte_str_ref_t& str_ref) + { + push_int ((str_ref[0] << 24) | (str_ref[1] << 16) | (str_ref[2] << 8) | (str_ref[3])); + str_ref.inc (4); + } + + bool push_fixed_from_substr (byte_str_ref_t& str_ref) + { + if (unlikely (!str_ref.avail (4))) + return false; + push_fixed ((int32_t)*(const HBUINT32*)&str_ref[0]); + str_ref.inc (4); + return true; + } + + private: + typedef cff_stack_t S; +}; + +/* an operator prefixed by its operands in a byte string */ +struct op_str_t +{ + /* This used to have a hb_ubytes_t. Using a pointer and length + * in a particular order, saves 8 bytes in this struct and more + * in our parsed_cs_op_t subclass. */ + + const unsigned char *ptr = nullptr; + + op_code_t op = OpCode_Invalid; + + uint8_t length = 0; +}; + +/* base of OP_SERIALIZER */ +struct op_serializer_t +{ + protected: + bool copy_opstr (hb_serialize_context_t *c, const op_str_t& opstr) const + { + TRACE_SERIALIZE (this); + + unsigned char *d = c->allocate_size (opstr.length); + if (unlikely (!d)) return_trace (false); + /* Faster than hb_memcpy for small strings. */ + for (unsigned i = 0; i < opstr.length; i++) + d[i] = opstr.ptr[i]; + return_trace (true); + } +}; + +template +struct parsed_values_t +{ + void init () + { + opStart = 0; + values.init (); + } + void fini () { values.fini (); } + + void alloc (unsigned n) + { + values.alloc (n, true); + } + + void add_op (op_code_t op, const byte_str_ref_t& str_ref = byte_str_ref_t (), const VAL &v = VAL ()) + { + VAL *val = values.push (v); + val->op = op; + auto arr = str_ref.sub_array (opStart, str_ref.get_offset () - opStart); + val->ptr = arr.arrayZ; + val->length = arr.length; + opStart = str_ref.get_offset (); + } + + bool has_op (op_code_t op) const + { + for (const auto& v : values) + if (v.op == op) return true; + return false; + } + + unsigned get_count () const { return values.length; } + const VAL &operator [] (unsigned int i) const { return values[i]; } + + unsigned int opStart; + hb_vector_t values; +}; + +template +struct interp_env_t +{ + interp_env_t () {} + interp_env_t (const hb_ubytes_t &str_) + { + str_ref.reset (str_); + } + bool in_error () const + { return str_ref.in_error () || argStack.in_error (); } + + void set_error () { str_ref.set_error (); } + + op_code_t fetch_op () + { + op_code_t op = OpCode_Invalid; + if (unlikely (!str_ref.avail ())) + return OpCode_Invalid; + op = (op_code_t) str_ref.head_unchecked (); + str_ref.inc (); + if (op == OpCode_escape) { + if (unlikely (!str_ref.avail ())) + return OpCode_Invalid; + op = Make_OpCode_ESC (str_ref.head_unchecked ()); + str_ref.inc (); + } + return op; + } + + const ARG& eval_arg (unsigned int i) { return argStack[i]; } + + ARG& pop_arg () { return argStack.pop (); } + void pop_n_args (unsigned int n) { argStack.pop (n); } + + void clear_args () { pop_n_args (argStack.get_count ()); } + + byte_str_ref_t + str_ref; + arg_stack_t + argStack; +}; + +using num_interp_env_t = interp_env_t<>; + +template +struct opset_t +{ + static void process_op (op_code_t op, interp_env_t& env) + { + switch (op) { + case OpCode_shortint: + env.argStack.push_int ((int16_t)((env.str_ref[0] << 8) | env.str_ref[1])); + env.str_ref.inc (2); + break; + + case OpCode_TwoBytePosInt0: case OpCode_TwoBytePosInt1: + case OpCode_TwoBytePosInt2: case OpCode_TwoBytePosInt3: + env.argStack.push_int ((int16_t)((op - OpCode_TwoBytePosInt0) * 256 + env.str_ref[0] + 108)); + env.str_ref.inc (); + break; + + case OpCode_TwoByteNegInt0: case OpCode_TwoByteNegInt1: + case OpCode_TwoByteNegInt2: case OpCode_TwoByteNegInt3: + env.argStack.push_int ((-(int16_t)(op - OpCode_TwoByteNegInt0) * 256 - env.str_ref[0] - 108)); + env.str_ref.inc (); + break; + + default: + /* 1-byte integer */ + if (likely ((OpCode_OneByteIntFirst <= op) && (op <= OpCode_OneByteIntLast))) + { + env.argStack.push_int ((int)op - 139); + } else { + /* invalid unknown operator */ + env.clear_args (); + env.set_error (); + } + break; + } + } +}; + +template +struct interpreter_t +{ + interpreter_t (ENV& env_) : env (env_) {} + ENV& env; +}; + +} /* namespace CFF */ + +#endif /* HB_CFF_INTERP_COMMON_HH */ diff --git a/gfx/harfbuzz/src/hb-cff-interp-cs-common.hh b/gfx/harfbuzz/src/hb-cff-interp-cs-common.hh new file mode 100644 index 0000000000..f40be51f0d --- /dev/null +++ b/gfx/harfbuzz/src/hb-cff-interp-cs-common.hh @@ -0,0 +1,907 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_CFF_INTERP_CS_COMMON_HH +#define HB_CFF_INTERP_CS_COMMON_HH + +#include "hb.hh" +#include "hb-cff-interp-common.hh" + +namespace CFF { + +using namespace OT; + +enum cs_type_t { + CSType_CharString, + CSType_GlobalSubr, + CSType_LocalSubr +}; + +struct call_context_t +{ + void init (const byte_str_ref_t substr_=byte_str_ref_t (), cs_type_t type_=CSType_CharString, unsigned int subr_num_=0) + { + str_ref = substr_; + type = type_; + subr_num = subr_num_; + } + + void fini () {} + + byte_str_ref_t str_ref; + cs_type_t type; + unsigned int subr_num; +}; + +/* call stack */ +const unsigned int kMaxCallLimit = 10; +struct call_stack_t : cff_stack_t {}; + +template +struct biased_subrs_t +{ + void init (const SUBRS *subrs_) + { + subrs = subrs_; + unsigned int nSubrs = get_count (); + if (nSubrs < 1240) + bias = 107; + else if (nSubrs < 33900) + bias = 1131; + else + bias = 32768; + } + + void fini () {} + + unsigned int get_count () const { return subrs ? subrs->count : 0; } + unsigned int get_bias () const { return bias; } + + hb_ubytes_t operator [] (unsigned int index) const + { + if (unlikely (!subrs || index >= subrs->count)) + return hb_ubytes_t (); + else + return (*subrs)[index]; + } + + protected: + unsigned int bias; + const SUBRS *subrs; +}; + +struct point_t +{ + void set_int (int _x, int _y) + { + x.set_int (_x); + y.set_int (_y); + } + + void move_x (const number_t &dx) { x += dx; } + void move_y (const number_t &dy) { y += dy; } + void move (const number_t &dx, const number_t &dy) { move_x (dx); move_y (dy); } + void move (const point_t &d) { move_x (d.x); move_y (d.y); } + + number_t x; + number_t y; +}; + +template +struct cs_interp_env_t : interp_env_t +{ + cs_interp_env_t (const hb_ubytes_t &str, const SUBRS *globalSubrs_, const SUBRS *localSubrs_) : + interp_env_t (str) + { + context.init (str, CSType_CharString); + seen_moveto = true; + seen_hintmask = false; + hstem_count = 0; + vstem_count = 0; + hintmask_size = 0; + pt.set_int (0, 0); + globalSubrs.init (globalSubrs_); + localSubrs.init (localSubrs_); + } + ~cs_interp_env_t () + { + globalSubrs.fini (); + localSubrs.fini (); + } + + bool in_error () const + { + return callStack.in_error () || SUPER::in_error (); + } + + bool pop_subr_num (const biased_subrs_t& biasedSubrs, unsigned int &subr_num) + { + subr_num = 0; + int n = SUPER::argStack.pop_int (); + n += biasedSubrs.get_bias (); + if (unlikely ((n < 0) || ((unsigned int)n >= biasedSubrs.get_count ()))) + return false; + + subr_num = (unsigned int)n; + return true; + } + + void call_subr (const biased_subrs_t& biasedSubrs, cs_type_t type) + { + unsigned int subr_num = 0; + + if (unlikely (!pop_subr_num (biasedSubrs, subr_num) + || callStack.get_count () >= kMaxCallLimit)) + { + SUPER::set_error (); + return; + } + context.str_ref = SUPER::str_ref; + callStack.push (context); + + context.init ( biasedSubrs[subr_num], type, subr_num); + SUPER::str_ref = context.str_ref; + } + + void return_from_subr () + { + if (unlikely (SUPER::str_ref.in_error ())) + SUPER::set_error (); + context = callStack.pop (); + SUPER::str_ref = context.str_ref; + } + + void determine_hintmask_size () + { + if (!seen_hintmask) + { + vstem_count += SUPER::argStack.get_count() / 2; + hintmask_size = (hstem_count + vstem_count + 7) >> 3; + seen_hintmask = true; + } + } + + void set_endchar (bool endchar_flag_) { endchar_flag = endchar_flag_; } + bool is_endchar () const { return endchar_flag; } + + const number_t &get_x () const { return pt.x; } + const number_t &get_y () const { return pt.y; } + const point_t &get_pt () const { return pt; } + + void moveto (const point_t &pt_ ) { pt = pt_; } + + public: + call_context_t context; + bool endchar_flag; + bool seen_moveto; + bool seen_hintmask; + + unsigned int hstem_count; + unsigned int vstem_count; + unsigned int hintmask_size; + call_stack_t callStack; + biased_subrs_t globalSubrs; + biased_subrs_t localSubrs; + + private: + point_t pt; + + typedef interp_env_t SUPER; +}; + +template +struct path_procs_null_t +{ + static void rmoveto (ENV &env, PARAM& param) {} + static void hmoveto (ENV &env, PARAM& param) {} + static void vmoveto (ENV &env, PARAM& param) {} + static void rlineto (ENV &env, PARAM& param) {} + static void hlineto (ENV &env, PARAM& param) {} + static void vlineto (ENV &env, PARAM& param) {} + static void rrcurveto (ENV &env, PARAM& param) {} + static void rcurveline (ENV &env, PARAM& param) {} + static void rlinecurve (ENV &env, PARAM& param) {} + static void vvcurveto (ENV &env, PARAM& param) {} + static void hhcurveto (ENV &env, PARAM& param) {} + static void vhcurveto (ENV &env, PARAM& param) {} + static void hvcurveto (ENV &env, PARAM& param) {} + static void moveto (ENV &env, PARAM& param, const point_t &pt) {} + static void line (ENV &env, PARAM& param, const point_t &pt1) {} + static void curve (ENV &env, PARAM& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) {} + static void hflex (ENV &env, PARAM& param) {} + static void flex (ENV &env, PARAM& param) {} + static void hflex1 (ENV &env, PARAM& param) {} + static void flex1 (ENV &env, PARAM& param) {} +}; + +template > +struct cs_opset_t : opset_t +{ + static void process_op (op_code_t op, ENV &env, PARAM& param) + { + switch (op) { + + case OpCode_return: + env.return_from_subr (); + break; + case OpCode_endchar: + OPSET::check_width (op, env, param); + env.set_endchar (true); + OPSET::flush_args_and_op (op, env, param); + break; + + case OpCode_fixedcs: + env.argStack.push_fixed_from_substr (env.str_ref); + break; + + case OpCode_callsubr: + env.call_subr (env.localSubrs, CSType_LocalSubr); + break; + + case OpCode_callgsubr: + env.call_subr (env.globalSubrs, CSType_GlobalSubr); + break; + + case OpCode_hstem: + case OpCode_hstemhm: + OPSET::check_width (op, env, param); + OPSET::process_hstem (op, env, param); + break; + case OpCode_vstem: + case OpCode_vstemhm: + OPSET::check_width (op, env, param); + OPSET::process_vstem (op, env, param); + break; + case OpCode_hintmask: + case OpCode_cntrmask: + OPSET::check_width (op, env, param); + OPSET::process_hintmask (op, env, param); + break; + case OpCode_rmoveto: + OPSET::check_width (op, env, param); + PATH::rmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_hmoveto: + OPSET::check_width (op, env, param); + PATH::hmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_vmoveto: + OPSET::check_width (op, env, param); + PATH::vmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_rlineto: + PATH::rlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hlineto: + PATH::hlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_vlineto: + PATH::vlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_rrcurveto: + PATH::rrcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_rcurveline: + PATH::rcurveline (env, param); + process_post_path (op, env, param); + break; + case OpCode_rlinecurve: + PATH::rlinecurve (env, param); + process_post_path (op, env, param); + break; + case OpCode_vvcurveto: + PATH::vvcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hhcurveto: + PATH::hhcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_vhcurveto: + PATH::vhcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hvcurveto: + PATH::hvcurveto (env, param); + process_post_path (op, env, param); + break; + + case OpCode_hflex: + PATH::hflex (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_flex: + PATH::flex (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_hflex1: + PATH::hflex1 (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_flex1: + PATH::flex1 (env, param); + OPSET::process_post_flex (op, env, param); + break; + + default: + SUPER::process_op (op, env); + break; + } + } + + static void process_hstem (op_code_t op, ENV &env, PARAM& param) + { + env.hstem_count += env.argStack.get_count () / 2; + OPSET::flush_args_and_op (op, env, param); + } + + static void process_vstem (op_code_t op, ENV &env, PARAM& param) + { + env.vstem_count += env.argStack.get_count () / 2; + OPSET::flush_args_and_op (op, env, param); + } + + static void process_hintmask (op_code_t op, ENV &env, PARAM& param) + { + env.determine_hintmask_size (); + if (likely (env.str_ref.avail (env.hintmask_size))) + { + OPSET::flush_hintmask (op, env, param); + env.str_ref.inc (env.hintmask_size); + } + } + + static void process_post_flex (op_code_t op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static void check_width (op_code_t op, ENV &env, PARAM& param) + {} + + static void process_post_move (op_code_t op, ENV &env, PARAM& param) + { + if (!env.seen_moveto) + { + env.determine_hintmask_size (); + env.seen_moveto = true; + } + OPSET::flush_args_and_op (op, env, param); + } + + static void process_post_path (op_code_t op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static void flush_args_and_op (op_code_t op, ENV &env, PARAM& param) + { + OPSET::flush_args (env, param); + OPSET::flush_op (op, env, param); + } + + static void flush_args (ENV &env, PARAM& param) + { + env.pop_n_args (env.argStack.get_count ()); + } + + static void flush_op (op_code_t op, ENV &env, PARAM& param) + { + } + + static void flush_hintmask (op_code_t op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static bool is_number_op (op_code_t op) + { + switch (op) + { + case OpCode_shortint: + case OpCode_fixedcs: + case OpCode_TwoBytePosInt0: case OpCode_TwoBytePosInt1: + case OpCode_TwoBytePosInt2: case OpCode_TwoBytePosInt3: + case OpCode_TwoByteNegInt0: case OpCode_TwoByteNegInt1: + case OpCode_TwoByteNegInt2: case OpCode_TwoByteNegInt3: + return true; + + default: + /* 1-byte integer */ + return (OpCode_OneByteIntFirst <= op) && (op <= OpCode_OneByteIntLast); + } + } + + protected: + typedef opset_t SUPER; +}; + +template +struct path_procs_t +{ + static void rmoveto (ENV &env, PARAM& param) + { + point_t pt1 = env.get_pt (); + const number_t &dy = env.pop_arg (); + const number_t &dx = env.pop_arg (); + pt1.move (dx, dy); + PATH::moveto (env, param, pt1); + } + + static void hmoveto (ENV &env, PARAM& param) + { + point_t pt1 = env.get_pt (); + pt1.move_x (env.pop_arg ()); + PATH::moveto (env, param, pt1); + } + + static void vmoveto (ENV &env, PARAM& param) + { + point_t pt1 = env.get_pt (); + pt1.move_y (env.pop_arg ()); + PATH::moveto (env, param, pt1); + } + + static void rlineto (ENV &env, PARAM& param) + { + for (unsigned int i = 0; i + 2 <= env.argStack.get_count (); i += 2) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + } + + static void hlineto (ENV &env, PARAM& param) + { + point_t pt1; + unsigned int i = 0; + for (; i + 2 <= env.argStack.get_count (); i += 2) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + PATH::line (env, param, pt1); + pt1.move_y (env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + if (i < env.argStack.get_count ()) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + PATH::line (env, param, pt1); + } + } + + static void vlineto (ENV &env, PARAM& param) + { + point_t pt1; + unsigned int i = 0; + for (; i + 2 <= env.argStack.get_count (); i += 2) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + PATH::line (env, param, pt1); + pt1.move_x (env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + if (i < env.argStack.get_count ()) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + PATH::line (env, param, pt1); + } + } + + static void rrcurveto (ENV &env, PARAM& param) + { + for (unsigned int i = 0; i + 6 <= env.argStack.get_count (); i += 6) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + point_t pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + + static void rcurveline (ENV &env, PARAM& param) + { + unsigned int arg_count = env.argStack.get_count (); + if (unlikely (arg_count < 8)) + return; + + unsigned int i = 0; + unsigned int curve_limit = arg_count - 2; + for (; i + 6 <= curve_limit; i += 6) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + point_t pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + + static void rlinecurve (ENV &env, PARAM& param) + { + unsigned int arg_count = env.argStack.get_count (); + if (unlikely (arg_count < 8)) + return; + + unsigned int i = 0; + unsigned int line_limit = arg_count - 6; + for (; i + 2 <= line_limit; i += 2) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + point_t pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + + static void vvcurveto (ENV &env, PARAM& param) + { + unsigned int i = 0; + point_t pt1 = env.get_pt (); + if ((env.argStack.get_count () & 1) != 0) + pt1.move_x (env.eval_arg (i++)); + for (; i + 4 <= env.argStack.get_count (); i += 4) + { + pt1.move_y (env.eval_arg (i)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + point_t pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + } + } + + static void hhcurveto (ENV &env, PARAM& param) + { + unsigned int i = 0; + point_t pt1 = env.get_pt (); + if ((env.argStack.get_count () & 1) != 0) + pt1.move_y (env.eval_arg (i++)); + for (; i + 4 <= env.argStack.get_count (); i += 4) + { + pt1.move_x (env.eval_arg (i)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + point_t pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + } + } + + static void vhcurveto (ENV &env, PARAM& param) + { + point_t pt1, pt2, pt3; + unsigned int i = 0; + if ((env.argStack.get_count () % 8) >= 4) + { + point_t pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + point_t pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + i += 4; + + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_y (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+7)); + } + if (i < env.argStack.get_count ()) + pt3.move_y (env.eval_arg (i)); + PATH::curve (env, param, pt1, pt2, pt3); + } + else + { + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_x (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+7)); + if ((env.argStack.get_count () - i < 16) && ((env.argStack.get_count () & 1) != 0)) + pt3.move_x (env.eval_arg (i+8)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + } + + static void hvcurveto (ENV &env, PARAM& param) + { + point_t pt1, pt2, pt3; + unsigned int i = 0; + if ((env.argStack.get_count () % 8) >= 4) + { + point_t pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + point_t pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + i += 4; + + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_x (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+7)); + } + if (i < env.argStack.get_count ()) + pt3.move_x (env.eval_arg (i)); + PATH::curve (env, param, pt1, pt2, pt3); + } + else + { + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_y (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+7)); + if ((env.argStack.get_count () - i < 16) && ((env.argStack.get_count () & 1) != 0)) + pt3.move_y (env.eval_arg (i+8)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + } + + /* default actions to be overridden */ + static void moveto (ENV &env, PARAM& param, const point_t &pt) + { env.moveto (pt); } + + static void line (ENV &env, PARAM& param, const point_t &pt1) + { PATH::moveto (env, param, pt1); } + + static void curve (ENV &env, PARAM& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) + { PATH::moveto (env, param, pt3); } + + static void hflex (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 7)) + { + point_t pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (0)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (1), env.eval_arg (2)); + point_t pt3 = pt2; + pt3.move_x (env.eval_arg (3)); + point_t pt4 = pt3; + pt4.move_x (env.eval_arg (4)); + point_t pt5 = pt4; + pt5.move_x (env.eval_arg (5)); + pt5.y = pt1.y; + point_t pt6 = pt5; + pt6.move_x (env.eval_arg (6)); + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void flex (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 13)) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + point_t pt3 = pt2; + pt3.move (env.eval_arg (4), env.eval_arg (5)); + point_t pt4 = pt3; + pt4.move (env.eval_arg (6), env.eval_arg (7)); + point_t pt5 = pt4; + pt5.move (env.eval_arg (8), env.eval_arg (9)); + point_t pt6 = pt5; + pt6.move (env.eval_arg (10), env.eval_arg (11)); + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void hflex1 (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 9)) + { + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + point_t pt3 = pt2; + pt3.move_x (env.eval_arg (4)); + point_t pt4 = pt3; + pt4.move_x (env.eval_arg (5)); + point_t pt5 = pt4; + pt5.move (env.eval_arg (6), env.eval_arg (7)); + point_t pt6 = pt5; + pt6.move_x (env.eval_arg (8)); + pt6.y = env.get_pt ().y; + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void flex1 (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 11)) + { + point_t d; + for (unsigned int i = 0; i < 10; i += 2) + d.move (env.eval_arg (i), env.eval_arg (i+1)); + + point_t pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + point_t pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + point_t pt3 = pt2; + pt3.move (env.eval_arg (4), env.eval_arg (5)); + point_t pt4 = pt3; + pt4.move (env.eval_arg (6), env.eval_arg (7)); + point_t pt5 = pt4; + pt5.move (env.eval_arg (8), env.eval_arg (9)); + point_t pt6 = pt5; + + if (fabs (d.x.to_real ()) > fabs (d.y.to_real ())) + { + pt6.move_x (env.eval_arg (10)); + pt6.y = env.get_pt ().y; + } + else + { + pt6.x = env.get_pt ().x; + pt6.move_y (env.eval_arg (10)); + } + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + protected: + static void curve2 (ENV &env, PARAM& param, + const point_t &pt1, const point_t &pt2, const point_t &pt3, + const point_t &pt4, const point_t &pt5, const point_t &pt6) + { + PATH::curve (env, param, pt1, pt2, pt3); + PATH::curve (env, param, pt4, pt5, pt6); + } +}; + +template +struct cs_interpreter_t : interpreter_t +{ + cs_interpreter_t (ENV& env_) : interpreter_t (env_) {} + + bool interpret (PARAM& param) + { + SUPER::env.set_endchar (false); + + unsigned max_ops = HB_CFF_MAX_OPS; + for (;;) { + if (unlikely (!--max_ops)) + { + SUPER::env.set_error (); + break; + } + OPSET::process_op (SUPER::env.fetch_op (), SUPER::env, param); + if (unlikely (SUPER::env.in_error ())) + return false; + if (SUPER::env.is_endchar ()) + break; + } + + return true; + } + + private: + typedef interpreter_t SUPER; +}; + +} /* namespace CFF */ + +#endif /* HB_CFF_INTERP_CS_COMMON_HH */ diff --git a/gfx/harfbuzz/src/hb-cff-interp-dict-common.hh b/gfx/harfbuzz/src/hb-cff-interp-dict-common.hh new file mode 100644 index 0000000000..53226b227e --- /dev/null +++ b/gfx/harfbuzz/src/hb-cff-interp-dict-common.hh @@ -0,0 +1,201 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_CFF_INTERP_DICT_COMMON_HH +#define HB_CFF_INTERP_DICT_COMMON_HH + +#include "hb-cff-interp-common.hh" + +namespace CFF { + +using namespace OT; + +/* an opstr and the parsed out dict value(s) */ +struct dict_val_t : op_str_t +{ + void init () {} + void fini () {} +}; + +typedef dict_val_t num_dict_val_t; + +template struct dict_values_t : parsed_values_t {}; + +template +struct top_dict_values_t : dict_values_t +{ + void init () + { + dict_values_t::init (); + charStringsOffset = 0; + FDArrayOffset = 0; + } + void fini () { dict_values_t::fini (); } + + unsigned int charStringsOffset; + unsigned int FDArrayOffset; +}; + +struct dict_opset_t : opset_t +{ + static void process_op (op_code_t op, interp_env_t& env) + { + switch (op) { + case OpCode_longintdict: /* 5-byte integer */ + env.argStack.push_longint_from_substr (env.str_ref); + break; + + case OpCode_BCD: /* real number */ + env.argStack.push_real (parse_bcd (env.str_ref)); + break; + + default: + opset_t::process_op (op, env); + break; + } + } + + /* Turns CFF's BCD format into strtod understandable string */ + static double parse_bcd (byte_str_ref_t& str_ref) + { + if (unlikely (str_ref.in_error ())) return .0; + + enum Nibble { DECIMAL=10, EXP_POS, EXP_NEG, RESERVED, NEG, END }; + + char buf[32]; + unsigned char byte = 0; + for (unsigned i = 0, count = 0; count < ARRAY_LENGTH (buf); ++i, ++count) + { + unsigned nibble; + if (!(i & 1)) + { + if (unlikely (!str_ref.avail ())) break; + + byte = str_ref[0]; + str_ref.inc (); + nibble = byte >> 4; + } + else + nibble = byte & 0x0F; + + if (unlikely (nibble == RESERVED)) break; + else if (nibble == END) + { + const char *p = buf; + double pv; + if (unlikely (!hb_parse_double (&p, p + count, &pv, true/* whole buffer */))) + break; + return pv; + } + else + { + buf[count] = "0123456789.EE?-?"[nibble]; + if (nibble == EXP_NEG) + { + ++count; + if (unlikely (count == ARRAY_LENGTH (buf))) break; + buf[count] = '-'; + } + } + } + + str_ref.set_error (); + return .0; + } + + static bool is_hint_op (op_code_t op) + { + switch (op) + { + case OpCode_BlueValues: + case OpCode_OtherBlues: + case OpCode_FamilyBlues: + case OpCode_FamilyOtherBlues: + case OpCode_StemSnapH: + case OpCode_StemSnapV: + case OpCode_StdHW: + case OpCode_StdVW: + case OpCode_BlueScale: + case OpCode_BlueShift: + case OpCode_BlueFuzz: + case OpCode_ForceBold: + case OpCode_LanguageGroup: + case OpCode_ExpansionFactor: + return true; + default: + return false; + } + } +}; + +template +struct top_dict_opset_t : dict_opset_t +{ + static void process_op (op_code_t op, interp_env_t& env, top_dict_values_t & dictval) + { + switch (op) { + case OpCode_CharStrings: + dictval.charStringsOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_FDArray: + dictval.FDArrayOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_FontMatrix: + env.clear_args (); + break; + default: + dict_opset_t::process_op (op, env); + break; + } + } +}; + +template +struct dict_interpreter_t : interpreter_t +{ + dict_interpreter_t (ENV& env_) : interpreter_t (env_) {} + + bool interpret (PARAM& param) + { + param.init (); + while (SUPER::env.str_ref.avail ()) + { + OPSET::process_op (SUPER::env.fetch_op (), SUPER::env, param); + if (unlikely (SUPER::env.in_error ())) + return false; + } + + return true; + } + + private: + typedef interpreter_t SUPER; +}; + +} /* namespace CFF */ + +#endif /* HB_CFF_INTERP_DICT_COMMON_HH */ diff --git a/gfx/harfbuzz/src/hb-cff1-interp-cs.hh b/gfx/harfbuzz/src/hb-cff1-interp-cs.hh new file mode 100644 index 0000000000..d8868efa53 --- /dev/null +++ b/gfx/harfbuzz/src/hb-cff1-interp-cs.hh @@ -0,0 +1,160 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_CFF1_INTERP_CS_HH +#define HB_CFF1_INTERP_CS_HH + +#include "hb.hh" +#include "hb-cff-interp-cs-common.hh" + +namespace CFF { + +using namespace OT; + +typedef biased_subrs_t cff1_biased_subrs_t; + +struct cff1_cs_interp_env_t : cs_interp_env_t +{ + template + cff1_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd, + const int *coords_=nullptr, unsigned int num_coords_=0) + : SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs) + { + processed_width = false; + has_width = false; + arg_start = 0; + in_seac = false; + } + + void set_width (bool has_width_) + { + if (likely (!processed_width && (SUPER::argStack.get_count () > 0))) + { + if (has_width_) + { + width = SUPER::argStack[0]; + has_width = true; + arg_start = 1; + } + } + processed_width = true; + } + + void clear_args () + { + arg_start = 0; + SUPER::clear_args (); + } + + void set_in_seac (bool _in_seac) { in_seac = _in_seac; } + + bool processed_width; + bool has_width; + unsigned int arg_start; + number_t width; + bool in_seac; + + private: + typedef cs_interp_env_t SUPER; +}; + +template > +struct cff1_cs_opset_t : cs_opset_t +{ + /* PostScript-originated legacy opcodes (OpCode_add etc) are unsupported */ + /* Type 1-originated deprecated opcodes, seac behavior of endchar and dotsection are supported */ + + static void process_op (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param) + { + switch (op) { + case OpCode_dotsection: + SUPER::flush_args_and_op (op, env, param); + break; + + case OpCode_endchar: + OPSET::check_width (op, env, param); + if (env.argStack.get_count () >= 4) + { + OPSET::process_seac (env, param); + } + OPSET::flush_args_and_op (op, env, param); + env.set_endchar (true); + break; + + default: + SUPER::process_op (op, env, param); + } + } + + static void check_width (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param) + { + if (!env.processed_width) + { + bool has_width = false; + switch (op) + { + case OpCode_endchar: + case OpCode_hstem: + case OpCode_hstemhm: + case OpCode_vstem: + case OpCode_vstemhm: + case OpCode_hintmask: + case OpCode_cntrmask: + has_width = ((env.argStack.get_count () & 1) != 0); + break; + case OpCode_hmoveto: + case OpCode_vmoveto: + has_width = (env.argStack.get_count () > 1); + break; + case OpCode_rmoveto: + has_width = (env.argStack.get_count () > 2); + break; + default: + return; + } + env.set_width (has_width); + } + } + + static void process_seac (cff1_cs_interp_env_t &env, PARAM& param) + { + } + + static void flush_args (cff1_cs_interp_env_t &env, PARAM& param) + { + SUPER::flush_args (env, param); + env.clear_args (); /* pop off width */ + } + + private: + typedef cs_opset_t SUPER; +}; + +template +using cff1_cs_interpreter_t = cs_interpreter_t; + +} /* namespace CFF */ + +#endif /* HB_CFF1_INTERP_CS_HH */ diff --git a/gfx/harfbuzz/src/hb-cff2-interp-cs.hh b/gfx/harfbuzz/src/hb-cff2-interp-cs.hh new file mode 100644 index 0000000000..915b10cf39 --- /dev/null +++ b/gfx/harfbuzz/src/hb-cff2-interp-cs.hh @@ -0,0 +1,282 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_CFF2_INTERP_CS_HH +#define HB_CFF2_INTERP_CS_HH + +#include "hb.hh" +#include "hb-cff-interp-cs-common.hh" + +namespace CFF { + +using namespace OT; + +struct blend_arg_t : number_t +{ + void set_int (int v) { reset_blends (); number_t::set_int (v); } + void set_fixed (int32_t v) { reset_blends (); number_t::set_fixed (v); } + void set_real (double v) { reset_blends (); number_t::set_real (v); } + + void set_blends (unsigned int numValues_, unsigned int valueIndex_, + hb_array_t blends_) + { + numValues = numValues_; + valueIndex = valueIndex_; + unsigned numBlends = blends_.length; + if (unlikely (!deltas.resize_exact (numBlends))) + return; + for (unsigned int i = 0; i < numBlends; i++) + deltas.arrayZ[i] = blends_.arrayZ[i]; + } + + bool blending () const { return deltas.length > 0; } + void reset_blends () + { + numValues = valueIndex = 0; + deltas.shrink (0); + } + + unsigned int numValues; + unsigned int valueIndex; + hb_vector_t deltas; +}; + +typedef biased_subrs_t cff2_biased_subrs_t; + +template +struct cff2_cs_interp_env_t : cs_interp_env_t +{ + template + cff2_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd, + const int *coords_=nullptr, unsigned int num_coords_=0) + : SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs) + { + coords = coords_; + num_coords = num_coords_; + varStore = acc.varStore; + seen_blend = false; + seen_vsindex_ = false; + scalars.init (); + do_blend = num_coords && coords && varStore->size; + set_ivs (acc.privateDicts[fd].ivs); + } + + void fini () + { + scalars.fini (); + SUPER::fini (); + } + + op_code_t fetch_op () + { + if (this->str_ref.avail ()) + return SUPER::fetch_op (); + + /* make up return or endchar op */ + if (this->callStack.is_empty ()) + return OpCode_endchar; + else + return OpCode_return; + } + + const ELEM& eval_arg (unsigned int i) + { + return SUPER::argStack[i]; + } + + const ELEM& pop_arg () + { + return SUPER::argStack.pop (); + } + + void process_blend () + { + if (!seen_blend) + { + region_count = varStore->varStore.get_region_index_count (get_ivs ()); + if (do_blend) + { + if (unlikely (!scalars.resize_exact (region_count))) + SUPER::set_error (); + else + varStore->varStore.get_region_scalars (get_ivs (), coords, num_coords, + &scalars[0], region_count); + } + seen_blend = true; + } + } + + void process_vsindex () + { + unsigned int index = SUPER::argStack.pop_uint (); + if (unlikely (seen_vsindex () || seen_blend)) + { + SUPER::set_error (); + } + else + { + set_ivs (index); + } + seen_vsindex_ = true; + } + + unsigned int get_region_count () const { return region_count; } + void set_region_count (unsigned int region_count_) { region_count = region_count_; } + unsigned int get_ivs () const { return ivs; } + void set_ivs (unsigned int ivs_) { ivs = ivs_; } + bool seen_vsindex () const { return seen_vsindex_; } + + double blend_deltas (hb_array_t deltas) const + { + double v = 0; + if (do_blend) + { + if (likely (scalars.length == deltas.length)) + { + unsigned count = scalars.length; + for (unsigned i = 0; i < count; i++) + v += (double) scalars.arrayZ[i] * deltas.arrayZ[i].to_real (); + } + } + return v; + } + + bool have_coords () const { return num_coords; } + + protected: + const int *coords; + unsigned int num_coords; + const CFF2VariationStore *varStore; + unsigned int region_count; + unsigned int ivs; + hb_vector_t scalars; + bool do_blend; + bool seen_vsindex_; + bool seen_blend; + + typedef cs_interp_env_t SUPER; +}; +template , PARAM>> +struct cff2_cs_opset_t : cs_opset_t, PARAM, PATH> +{ + static void process_op (op_code_t op, cff2_cs_interp_env_t &env, PARAM& param) + { + switch (op) { + case OpCode_callsubr: + case OpCode_callgsubr: + /* a subroutine number shouldn't be a blended value */ +#if 0 + if (unlikely (env.argStack.peek ().blending ())) + { + env.set_error (); + break; + } +#endif + SUPER::process_op (op, env, param); + break; + + case OpCode_blendcs: + OPSET::process_blend (env, param); + break; + + case OpCode_vsindexcs: +#if 0 + if (unlikely (env.argStack.peek ().blending ())) + { + env.set_error (); + break; + } +#endif + OPSET::process_vsindex (env, param); + break; + + default: + SUPER::process_op (op, env, param); + } + } + + template + static void process_arg_blend (cff2_cs_interp_env_t &env, + ELEM &arg, + const hb_array_t blends, + unsigned n, unsigned i) + { + if (env.have_coords ()) + arg.set_int (round (arg.to_real () + env.blend_deltas (blends))); + else + arg.set_blends (n, i, blends); + } + template + static void process_arg_blend (cff2_cs_interp_env_t &env, + ELEM &arg, + const hb_array_t blends, + unsigned n, unsigned i) + { + arg.set_real (arg.to_real () + env.blend_deltas (blends)); + } + + static void process_blend (cff2_cs_interp_env_t &env, PARAM& param) + { + unsigned int n, k; + + env.process_blend (); + k = env.get_region_count (); + n = env.argStack.pop_uint (); + /* copy the blend values into blend array of the default values */ + unsigned int start = env.argStack.get_count () - ((k+1) * n); + /* let an obvious error case fail, but note CFF2 spec doesn't forbid n==0 */ + if (unlikely (start > env.argStack.get_count ())) + { + env.set_error (); + return; + } + for (unsigned int i = 0; i < n; i++) + { + const hb_array_t blends = env.argStack.sub_array (start + n + (i * k), k); + process_arg_blend (env, env.argStack[start + i], blends, n, i); + } + + /* pop off blend values leaving default values now adorned with blend values */ + env.argStack.pop (k * n); + } + + static void process_vsindex (cff2_cs_interp_env_t &env, PARAM& param) + { + env.process_vsindex (); + env.clear_args (); + } + + private: + typedef cs_opset_t, PARAM, PATH> SUPER; +}; + +template +using cff2_cs_interpreter_t = cs_interpreter_t, OPSET, PARAM>; + +} /* namespace CFF */ + +#endif /* HB_CFF2_INTERP_CS_HH */ diff --git a/gfx/harfbuzz/src/hb-common.cc b/gfx/harfbuzz/src/hb-common.cc new file mode 100644 index 0000000000..282a8e4d0f --- /dev/null +++ b/gfx/harfbuzz/src/hb-common.cc @@ -0,0 +1,1220 @@ +/* + * Copyright © 2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" +#include "hb-machinery.hh" + + +/** + * SECTION:hb-common + * @title: hb-common + * @short_description: Common data types + * @include: hb.h + * + * Common data types used across HarfBuzz are defined here. + **/ + + +/* hb_options_t */ + +hb_atomic_int_t _hb_options; + +void +_hb_options_init () +{ + hb_options_union_t u; + u.i = 0; + u.opts.initialized = true; + + const char *c = getenv ("HB_OPTIONS"); + if (c) + { + while (*c) + { + const char *p = strchr (c, ':'); + if (!p) + p = c + strlen (c); + +#define OPTION(name, symbol) \ + if (0 == strncmp (c, name, p - c) && strlen (name) == static_cast(p - c)) do { u.opts.symbol = true; } while (0) + + OPTION ("uniscribe-bug-compatible", uniscribe_bug_compatible); + +#undef OPTION + + c = *p ? p + 1 : p; + } + + } + + /* This is idempotent and threadsafe. */ + _hb_options = u.i; +} + + +/* hb_tag_t */ + +/** + * hb_tag_from_string: + * @str: (array length=len) (element-type uint8_t): String to convert + * @len: Length of @str, or -1 if it is `NULL`-terminated + * + * Converts a string into an #hb_tag_t. Valid tags + * are four characters. Shorter input strings will be + * padded with spaces. Longer input strings will be + * truncated. + * + * Return value: The #hb_tag_t corresponding to @str + * + * Since: 0.9.2 + **/ +hb_tag_t +hb_tag_from_string (const char *str, int len) +{ + char tag[4]; + unsigned int i; + + if (!str || !len || !*str) + return HB_TAG_NONE; + + if (len < 0 || len > 4) + len = 4; + for (i = 0; i < (unsigned) len && str[i]; i++) + tag[i] = str[i]; + for (; i < 4; i++) + tag[i] = ' '; + + return HB_TAG (tag[0], tag[1], tag[2], tag[3]); +} + +/** + * hb_tag_to_string: + * @tag: #hb_tag_t to convert + * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t): Converted string + * + * Converts an #hb_tag_t to a string and returns it in @buf. + * Strings will be four characters long. + * + * Since: 0.9.5 + **/ +void +hb_tag_to_string (hb_tag_t tag, char *buf) +{ + buf[0] = (char) (uint8_t) (tag >> 24); + buf[1] = (char) (uint8_t) (tag >> 16); + buf[2] = (char) (uint8_t) (tag >> 8); + buf[3] = (char) (uint8_t) (tag >> 0); +} + + +/* hb_direction_t */ + +static const char direction_strings[][4] = { + "ltr", + "rtl", + "ttb", + "btt" +}; + +/** + * hb_direction_from_string: + * @str: (array length=len) (element-type uint8_t): String to convert + * @len: Length of @str, or -1 if it is `NULL`-terminated + * + * Converts a string to an #hb_direction_t. + * + * Matching is loose and applies only to the first letter. For + * examples, "LTR" and "left-to-right" will both return #HB_DIRECTION_LTR. + * + * Unmatched strings will return #HB_DIRECTION_INVALID. + * + * Return value: The #hb_direction_t matching @str + * + * Since: 0.9.2 + **/ +hb_direction_t +hb_direction_from_string (const char *str, int len) +{ + if (unlikely (!str || !len || !*str)) + return HB_DIRECTION_INVALID; + + /* Lets match loosely: just match the first letter, such that + * all of "ltr", "left-to-right", etc work! + */ + char c = TOLOWER (str[0]); + for (unsigned int i = 0; i < ARRAY_LENGTH (direction_strings); i++) + if (c == direction_strings[i][0]) + return (hb_direction_t) (HB_DIRECTION_LTR + i); + + return HB_DIRECTION_INVALID; +} + +/** + * hb_direction_to_string: + * @direction: The #hb_direction_t to convert + * + * Converts an #hb_direction_t to a string. + * + * Return value: (transfer none): The string corresponding to @direction + * + * Since: 0.9.2 + **/ +const char * +hb_direction_to_string (hb_direction_t direction) +{ + if (likely ((unsigned int) (direction - HB_DIRECTION_LTR) + < ARRAY_LENGTH (direction_strings))) + return direction_strings[direction - HB_DIRECTION_LTR]; + + return "invalid"; +} + + +/* hb_language_t */ + +struct hb_language_impl_t { + const char s[1]; +}; + +static const char canon_map[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '-', 0, 0, + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 0, 0, 0, 0, 0, 0, + 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0, 0, 0, 0, '-', + 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0, 0, 0, 0, 0 +}; + +static bool +lang_equal (hb_language_t v1, + const void *v2) +{ + const unsigned char *p1 = (const unsigned char *) v1; + const unsigned char *p2 = (const unsigned char *) v2; + + while (*p1 && *p1 == canon_map[*p2]) { + p1++; + p2++; + } + + return *p1 == canon_map[*p2]; +} + +#if 0 +static unsigned int +lang_hash (const void *key) +{ + const unsigned char *p = key; + unsigned int h = 0; + while (canon_map[*p]) + { + h = (h << 5) - h + canon_map[*p]; + p++; + } + + return h; +} +#endif + + +struct hb_language_item_t { + + struct hb_language_item_t *next; + hb_language_t lang; + + bool operator == (const char *s) const + { return lang_equal (lang, s); } + + hb_language_item_t & operator = (const char *s) + { + /* We can't call strdup(), because we allow custom allocators. */ + size_t len = strlen(s) + 1; + lang = (hb_language_t) hb_malloc(len); + if (likely (lang)) + { + hb_memcpy((unsigned char *) lang, s, len); + for (unsigned char *p = (unsigned char *) lang; *p; p++) + *p = canon_map[*p]; + } + + return *this; + } + + void fini () { hb_free ((void *) lang); } +}; + + +/* Thread-safe lockfree language list */ + +static hb_atomic_ptr_t langs; + +static inline void +free_langs () +{ +retry: + hb_language_item_t *first_lang = langs; + if (unlikely (!langs.cmpexch (first_lang, nullptr))) + goto retry; + + while (first_lang) { + hb_language_item_t *next = first_lang->next; + first_lang->fini (); + hb_free (first_lang); + first_lang = next; + } +} + +static hb_language_item_t * +lang_find_or_insert (const char *key) +{ +retry: + hb_language_item_t *first_lang = langs; + + for (hb_language_item_t *lang = first_lang; lang; lang = lang->next) + if (*lang == key) + return lang; + + /* Not found; allocate one. */ + hb_language_item_t *lang = (hb_language_item_t *) hb_calloc (1, sizeof (hb_language_item_t)); + if (unlikely (!lang)) + return nullptr; + lang->next = first_lang; + *lang = key; + if (unlikely (!lang->lang)) + { + hb_free (lang); + return nullptr; + } + + if (unlikely (!langs.cmpexch (first_lang, lang))) + { + lang->fini (); + hb_free (lang); + goto retry; + } + + if (!first_lang) + hb_atexit (free_langs); /* First person registers atexit() callback. */ + + return lang; +} + + +/** + * hb_language_from_string: + * @str: (array length=len) (element-type uint8_t): a string representing + * a BCP 47 language tag + * @len: length of the @str, or -1 if it is `NULL`-terminated. + * + * Converts @str representing a BCP 47 language tag to the corresponding + * #hb_language_t. + * + * Return value: (transfer none): + * The #hb_language_t corresponding to the BCP 47 language tag. + * + * Since: 0.9.2 + **/ +hb_language_t +hb_language_from_string (const char *str, int len) +{ + if (!str || !len || !*str) + return HB_LANGUAGE_INVALID; + + hb_language_item_t *item = nullptr; + if (len >= 0) + { + /* NUL-terminate it. */ + char strbuf[64]; + len = hb_min (len, (int) sizeof (strbuf) - 1); + hb_memcpy (strbuf, str, len); + strbuf[len] = '\0'; + item = lang_find_or_insert (strbuf); + } + else + item = lang_find_or_insert (str); + + return likely (item) ? item->lang : HB_LANGUAGE_INVALID; +} + +/** + * hb_language_to_string: + * @language: The #hb_language_t to convert + * + * Converts an #hb_language_t to a string. + * + * Return value: (transfer none): + * A `NULL`-terminated string representing the @language. Must not be freed by + * the caller. + * + * Since: 0.9.2 + **/ +const char * +hb_language_to_string (hb_language_t language) +{ + if (unlikely (!language)) return nullptr; + + return language->s; +} + +/** + * hb_language_get_default: + * + * Fetch the default language from current locale. + * + * Note that the first time this function is called, it calls + * "setlocale (LC_CTYPE, nullptr)" to fetch current locale. The underlying + * setlocale function is, in many implementations, NOT threadsafe. To avoid + * problems, call this function once before multiple threads can call it. + * This function is only used from hb_buffer_guess_segment_properties() by + * HarfBuzz itself. + * + * Return value: (transfer none): The default language of the locale as + * an #hb_language_t + * + * Since: 0.9.2 + **/ +hb_language_t +hb_language_get_default () +{ + static hb_atomic_ptr_t default_language; + + hb_language_t language = default_language; + if (unlikely (language == HB_LANGUAGE_INVALID)) + { + language = hb_language_from_string (hb_setlocale (LC_CTYPE, nullptr), -1); + (void) default_language.cmpexch (HB_LANGUAGE_INVALID, language); + } + + return language; +} + +/** + * hb_language_matches: + * @language: The #hb_language_t to work on + * @specific: Another #hb_language_t + * + * Check whether a second language tag is the same or a more + * specific version of the provided language tag. For example, + * "fa_IR.utf8" is a more specific tag for "fa" or for "fa_IR". + * + * Return value: `true` if languages match, `false` otherwise. + * + * Since: 5.0.0 + **/ +hb_bool_t +hb_language_matches (hb_language_t language, + hb_language_t specific) +{ + if (language == specific) return true; + if (!language || !specific) return false; + + const char *l = language->s; + const char *s = specific->s; + unsigned ll = strlen (l); + unsigned sl = strlen (s); + + if (ll > sl) + return false; + + return strncmp (l, s, ll) == 0 && + (s[ll] == '\0' || s[ll] == '-'); +} + + +/* hb_script_t */ + +/** + * hb_script_from_iso15924_tag: + * @tag: an #hb_tag_t representing an ISO 15924 tag. + * + * Converts an ISO 15924 script tag to a corresponding #hb_script_t. + * + * Return value: + * An #hb_script_t corresponding to the ISO 15924 tag. + * + * Since: 0.9.2 + **/ +hb_script_t +hb_script_from_iso15924_tag (hb_tag_t tag) +{ + if (unlikely (tag == HB_TAG_NONE)) + return HB_SCRIPT_INVALID; + + /* Be lenient, adjust case (one capital letter followed by three small letters) */ + tag = (tag & 0xDFDFDFDFu) | 0x00202020u; + + switch (tag) { + + /* These graduated from the 'Q' private-area codes, but + * the old code is still aliased by Unicode, and the Qaai + * one in use by ICU. */ + case HB_TAG('Q','a','a','i'): return HB_SCRIPT_INHERITED; + case HB_TAG('Q','a','a','c'): return HB_SCRIPT_COPTIC; + + /* Script variants from https://unicode.org/iso15924/ */ + case HB_TAG('A','r','a','n'): return HB_SCRIPT_ARABIC; + case HB_TAG('C','y','r','s'): return HB_SCRIPT_CYRILLIC; + case HB_TAG('G','e','o','k'): return HB_SCRIPT_GEORGIAN; + case HB_TAG('H','a','n','s'): return HB_SCRIPT_HAN; + case HB_TAG('H','a','n','t'): return HB_SCRIPT_HAN; + case HB_TAG('J','a','m','o'): return HB_SCRIPT_HANGUL; + case HB_TAG('L','a','t','f'): return HB_SCRIPT_LATIN; + case HB_TAG('L','a','t','g'): return HB_SCRIPT_LATIN; + case HB_TAG('S','y','r','e'): return HB_SCRIPT_SYRIAC; + case HB_TAG('S','y','r','j'): return HB_SCRIPT_SYRIAC; + case HB_TAG('S','y','r','n'): return HB_SCRIPT_SYRIAC; + } + + /* If it looks right, just use the tag as a script */ + if (((uint32_t) tag & 0xE0E0E0E0u) == 0x40606060u) + return (hb_script_t) tag; + + /* Otherwise, return unknown */ + return HB_SCRIPT_UNKNOWN; +} + +/** + * hb_script_from_string: + * @str: (array length=len) (element-type uint8_t): a string representing an + * ISO 15924 tag. + * @len: length of the @str, or -1 if it is `NULL`-terminated. + * + * Converts a string @str representing an ISO 15924 script tag to a + * corresponding #hb_script_t. Shorthand for hb_tag_from_string() then + * hb_script_from_iso15924_tag(). + * + * Return value: + * An #hb_script_t corresponding to the ISO 15924 tag. + * + * Since: 0.9.2 + **/ +hb_script_t +hb_script_from_string (const char *str, int len) +{ + return hb_script_from_iso15924_tag (hb_tag_from_string (str, len)); +} + +/** + * hb_script_to_iso15924_tag: + * @script: an #hb_script_t to convert. + * + * Converts an #hb_script_t to a corresponding ISO 15924 script tag. + * + * Return value: + * An #hb_tag_t representing an ISO 15924 script tag. + * + * Since: 0.9.2 + **/ +hb_tag_t +hb_script_to_iso15924_tag (hb_script_t script) +{ + return (hb_tag_t) script; +} + +/** + * hb_script_get_horizontal_direction: + * @script: The #hb_script_t to query + * + * Fetches the #hb_direction_t of a script when it is + * set horizontally. All right-to-left scripts will return + * #HB_DIRECTION_RTL. All left-to-right scripts will return + * #HB_DIRECTION_LTR. Scripts that can be written either + * horizontally or vertically will return #HB_DIRECTION_INVALID. + * Unknown scripts will return #HB_DIRECTION_LTR. + * + * Return value: The horizontal #hb_direction_t of @script + * + * Since: 0.9.2 + **/ +hb_direction_t +hb_script_get_horizontal_direction (hb_script_t script) +{ + /* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */ + switch ((hb_tag_t) script) + { + /* Unicode-1.1 additions */ + case HB_SCRIPT_ARABIC: + case HB_SCRIPT_HEBREW: + + /* Unicode-3.0 additions */ + case HB_SCRIPT_SYRIAC: + case HB_SCRIPT_THAANA: + + /* Unicode-4.0 additions */ + case HB_SCRIPT_CYPRIOT: + + /* Unicode-4.1 additions */ + case HB_SCRIPT_KHAROSHTHI: + + /* Unicode-5.0 additions */ + case HB_SCRIPT_PHOENICIAN: + case HB_SCRIPT_NKO: + + /* Unicode-5.1 additions */ + case HB_SCRIPT_LYDIAN: + + /* Unicode-5.2 additions */ + case HB_SCRIPT_AVESTAN: + case HB_SCRIPT_IMPERIAL_ARAMAIC: + case HB_SCRIPT_INSCRIPTIONAL_PAHLAVI: + case HB_SCRIPT_INSCRIPTIONAL_PARTHIAN: + case HB_SCRIPT_OLD_SOUTH_ARABIAN: + case HB_SCRIPT_OLD_TURKIC: + case HB_SCRIPT_SAMARITAN: + + /* Unicode-6.0 additions */ + case HB_SCRIPT_MANDAIC: + + /* Unicode-6.1 additions */ + case HB_SCRIPT_MEROITIC_CURSIVE: + case HB_SCRIPT_MEROITIC_HIEROGLYPHS: + + /* Unicode-7.0 additions */ + case HB_SCRIPT_MANICHAEAN: + case HB_SCRIPT_MENDE_KIKAKUI: + case HB_SCRIPT_NABATAEAN: + case HB_SCRIPT_OLD_NORTH_ARABIAN: + case HB_SCRIPT_PALMYRENE: + case HB_SCRIPT_PSALTER_PAHLAVI: + + /* Unicode-8.0 additions */ + case HB_SCRIPT_HATRAN: + + /* Unicode-9.0 additions */ + case HB_SCRIPT_ADLAM: + + /* Unicode-11.0 additions */ + case HB_SCRIPT_HANIFI_ROHINGYA: + case HB_SCRIPT_OLD_SOGDIAN: + case HB_SCRIPT_SOGDIAN: + + /* Unicode-12.0 additions */ + case HB_SCRIPT_ELYMAIC: + + /* Unicode-13.0 additions */ + case HB_SCRIPT_CHORASMIAN: + case HB_SCRIPT_YEZIDI: + + /* Unicode-14.0 additions */ + case HB_SCRIPT_OLD_UYGHUR: + + return HB_DIRECTION_RTL; + + + /* https://github.com/harfbuzz/harfbuzz/issues/1000 */ + case HB_SCRIPT_OLD_HUNGARIAN: + case HB_SCRIPT_OLD_ITALIC: + case HB_SCRIPT_RUNIC: + case HB_SCRIPT_TIFINAGH: + + return HB_DIRECTION_INVALID; + } + + return HB_DIRECTION_LTR; +} + + +/* hb_version */ + + +/** + * SECTION:hb-version + * @title: hb-version + * @short_description: Information about the version of HarfBuzz in use + * @include: hb.h + * + * These functions and macros allow accessing version of the HarfBuzz + * library used at compile- as well as run-time, and to direct code + * conditionally based on those versions, again, at compile- or run-time. + **/ + + +/** + * hb_version: + * @major: (out): Library major version component + * @minor: (out): Library minor version component + * @micro: (out): Library micro version component + * + * Returns library version as three integer components. + * + * Since: 0.9.2 + **/ +void +hb_version (unsigned int *major, + unsigned int *minor, + unsigned int *micro) +{ + *major = HB_VERSION_MAJOR; + *minor = HB_VERSION_MINOR; + *micro = HB_VERSION_MICRO; +} + +/** + * hb_version_string: + * + * Returns library version as a string with three components. + * + * Return value: Library version string + * + * Since: 0.9.2 + **/ +const char * +hb_version_string () +{ + return HB_VERSION_STRING; +} + +/** + * hb_version_atleast: + * @major: Library major version component + * @minor: Library minor version component + * @micro: Library micro version component + * + * Tests the library version against a minimum value, + * as three integer components. + * + * Return value: `true` if the library is equal to or greater than + * the test value, `false` otherwise + * + * Since: 0.9.30 + **/ +hb_bool_t +hb_version_atleast (unsigned int major, + unsigned int minor, + unsigned int micro) +{ + return HB_VERSION_ATLEAST (major, minor, micro); +} + + + +/* hb_feature_t and hb_variation_t */ + +static bool +parse_space (const char **pp, const char *end) +{ + while (*pp < end && ISSPACE (**pp)) + (*pp)++; + return true; +} + +static bool +parse_char (const char **pp, const char *end, char c) +{ + parse_space (pp, end); + + if (*pp == end || **pp != c) + return false; + + (*pp)++; + return true; +} + +static bool +parse_uint (const char **pp, const char *end, unsigned int *pv) +{ + /* Intentionally use hb_parse_int inside instead of hb_parse_uint, + * such that -1 turns into "big number"... */ + int v; + if (unlikely (!hb_parse_int (pp, end, &v))) return false; + + *pv = v; + return true; +} + +static bool +parse_uint32 (const char **pp, const char *end, uint32_t *pv) +{ + /* Intentionally use hb_parse_int inside instead of hb_parse_uint, + * such that -1 turns into "big number"... */ + int v; + if (unlikely (!hb_parse_int (pp, end, &v))) return false; + + *pv = v; + return true; +} + +static bool +parse_bool (const char **pp, const char *end, uint32_t *pv) +{ + parse_space (pp, end); + + const char *p = *pp; + while (*pp < end && ISALPHA(**pp)) + (*pp)++; + + /* CSS allows on/off as aliases 1/0. */ + if (*pp - p == 2 + && TOLOWER (p[0]) == 'o' + && TOLOWER (p[1]) == 'n') + *pv = 1; + else if (*pp - p == 3 + && TOLOWER (p[0]) == 'o' + && TOLOWER (p[1]) == 'f' + && TOLOWER (p[2]) == 'f') + *pv = 0; + else + return false; + + return true; +} + +/* hb_feature_t */ + +static bool +parse_feature_value_prefix (const char **pp, const char *end, hb_feature_t *feature) +{ + if (parse_char (pp, end, '-')) + feature->value = 0; + else { + parse_char (pp, end, '+'); + feature->value = 1; + } + + return true; +} + +static bool +parse_tag (const char **pp, const char *end, hb_tag_t *tag) +{ + parse_space (pp, end); + + char quote = 0; + + if (*pp < end && (**pp == '\'' || **pp == '"')) + { + quote = **pp; + (*pp)++; + } + + const char *p = *pp; + while (*pp < end && (ISALNUM(**pp) || **pp == '_')) + (*pp)++; + + if (p == *pp || *pp - p > 4) + return false; + + *tag = hb_tag_from_string (p, *pp - p); + + if (quote) + { + /* CSS expects exactly four bytes. And we only allow quotations for + * CSS compatibility. So, enforce the length. */ + if (*pp - p != 4) + return false; + if (*pp == end || **pp != quote) + return false; + (*pp)++; + } + + return true; +} + +static bool +parse_feature_indices (const char **pp, const char *end, hb_feature_t *feature) +{ + parse_space (pp, end); + + bool has_start; + + feature->start = HB_FEATURE_GLOBAL_START; + feature->end = HB_FEATURE_GLOBAL_END; + + if (!parse_char (pp, end, '[')) + return true; + + has_start = parse_uint (pp, end, &feature->start); + + if (parse_char (pp, end, ':') || parse_char (pp, end, ';')) { + parse_uint (pp, end, &feature->end); + } else { + if (has_start) + feature->end = feature->start + 1; + } + + return parse_char (pp, end, ']'); +} + +static bool +parse_feature_value_postfix (const char **pp, const char *end, hb_feature_t *feature) +{ + bool had_equal = parse_char (pp, end, '='); + bool had_value = parse_uint32 (pp, end, &feature->value) || + parse_bool (pp, end, &feature->value); + /* CSS doesn't use equal-sign between tag and value. + * If there was an equal-sign, then there *must* be a value. + * A value without an equal-sign is ok, but not required. */ + return !had_equal || had_value; +} + +static bool +parse_one_feature (const char **pp, const char *end, hb_feature_t *feature) +{ + return parse_feature_value_prefix (pp, end, feature) && + parse_tag (pp, end, &feature->tag) && + parse_feature_indices (pp, end, feature) && + parse_feature_value_postfix (pp, end, feature) && + parse_space (pp, end) && + *pp == end; +} + +/** + * hb_feature_from_string: + * @str: (array length=len) (element-type uint8_t): a string to parse + * @len: length of @str, or -1 if string is `NULL` terminated + * @feature: (out): the #hb_feature_t to initialize with the parsed values + * + * Parses a string into a #hb_feature_t. + * + * The format for specifying feature strings follows. All valid CSS + * font-feature-settings values other than 'normal' and the global values are + * also accepted, though not documented below. CSS string escapes are not + * supported. + * + * The range indices refer to the positions between Unicode characters. The + * position before the first character is always 0. + * + * The format is Python-esque. Here is how it all works: + * + * + * + * + * Syntax Value Start End + * + * + * Setting value: + * kern 1 0 ∞ Turn feature on + * +kern 1 0 ∞ Turn feature on + * -kern 0 0 ∞ Turn feature off + * kern=0 0 0 ∞ Turn feature off + * kern=1 1 0 ∞ Turn feature on + * aalt=2 2 0 ∞ Choose 2nd alternate + * Setting index: + * kern[] 1 0 ∞ Turn feature on + * kern[:] 1 0 ∞ Turn feature on + * kern[5:] 1 5 ∞ Turn feature on, partial + * kern[:5] 1 0 5 Turn feature on, partial + * kern[3:5] 1 3 5 Turn feature on, range + * kern[3] 1 3 3+1 Turn feature on, single char + * Mixing it all: + * aalt[3:5]=2 2 3 5 Turn 2nd alternate on for range + * + * + * + * + * Return value: + * `true` if @str is successfully parsed, `false` otherwise + * + * Since: 0.9.5 + **/ +hb_bool_t +hb_feature_from_string (const char *str, int len, + hb_feature_t *feature) +{ + hb_feature_t feat; + + if (len < 0) + len = strlen (str); + + if (likely (parse_one_feature (&str, str + len, &feat))) + { + if (feature) + *feature = feat; + return true; + } + + if (feature) + hb_memset (feature, 0, sizeof (*feature)); + return false; +} + +/** + * hb_feature_to_string: + * @feature: an #hb_feature_t to convert + * @buf: (array length=size) (out): output string + * @size: the allocated size of @buf + * + * Converts a #hb_feature_t into a `NULL`-terminated string in the format + * understood by hb_feature_from_string(). The client in responsible for + * allocating big enough size for @buf, 128 bytes is more than enough. + * + * Since: 0.9.5 + **/ +void +hb_feature_to_string (hb_feature_t *feature, + char *buf, unsigned int size) +{ + if (unlikely (!size)) return; + + char s[128]; + unsigned int len = 0; + if (feature->value == 0) + s[len++] = '-'; + hb_tag_to_string (feature->tag, s + len); + len += 4; + while (len && s[len - 1] == ' ') + len--; + if (feature->start != HB_FEATURE_GLOBAL_START || feature->end != HB_FEATURE_GLOBAL_END) + { + s[len++] = '['; + if (feature->start) + len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->start)); + if (feature->end != feature->start + 1) { + s[len++] = ':'; + if (feature->end != HB_FEATURE_GLOBAL_END) + len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->end)); + } + s[len++] = ']'; + } + if (feature->value > 1) + { + s[len++] = '='; + len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->value)); + } + assert (len < ARRAY_LENGTH (s)); + len = hb_min (len, size - 1); + hb_memcpy (buf, s, len); + buf[len] = '\0'; +} + +/* hb_variation_t */ + +static bool +parse_variation_value (const char **pp, const char *end, hb_variation_t *variation) +{ + parse_char (pp, end, '='); /* Optional. */ + double v; + if (unlikely (!hb_parse_double (pp, end, &v))) return false; + + variation->value = v; + return true; +} + +static bool +parse_one_variation (const char **pp, const char *end, hb_variation_t *variation) +{ + return parse_tag (pp, end, &variation->tag) && + parse_variation_value (pp, end, variation) && + parse_space (pp, end) && + *pp == end; +} + +/** + * hb_variation_from_string: + * @str: (array length=len) (element-type uint8_t): a string to parse + * @len: length of @str, or -1 if string is `NULL` terminated + * @variation: (out): the #hb_variation_t to initialize with the parsed values + * + * Parses a string into a #hb_variation_t. + * + * The format for specifying variation settings follows. All valid CSS + * font-variation-settings values other than 'normal' and 'inherited' are also + * accepted, though, not documented below. + * + * The format is a tag, optionally followed by an equals sign, followed by a + * number. For example `wght=500`, or `slnt=-7.5`. + * + * Return value: + * `true` if @str is successfully parsed, `false` otherwise + * + * Since: 1.4.2 + */ +hb_bool_t +hb_variation_from_string (const char *str, int len, + hb_variation_t *variation) +{ + hb_variation_t var; + + if (len < 0) + len = strlen (str); + + if (likely (parse_one_variation (&str, str + len, &var))) + { + if (variation) + *variation = var; + return true; + } + + if (variation) + hb_memset (variation, 0, sizeof (*variation)); + return false; +} + +#ifndef HB_NO_SETLOCALE + +static inline void free_static_C_locale (); + +static struct hb_C_locale_lazy_loader_t : hb_lazy_loader_t, + hb_C_locale_lazy_loader_t> +{ + static hb_locale_t create () + { + hb_locale_t l = newlocale (LC_ALL_MASK, "C", NULL); + if (!l) + return l; + + hb_atexit (free_static_C_locale); + + return l; + } + static void destroy (hb_locale_t l) + { + freelocale (l); + } + static hb_locale_t get_null () + { + return (hb_locale_t) 0; + } +} static_C_locale; + +static inline +void free_static_C_locale () +{ + static_C_locale.free_instance (); +} + +static hb_locale_t +get_C_locale () +{ + return static_C_locale.get_unconst (); +} + +#endif + +/** + * hb_variation_to_string: + * @variation: an #hb_variation_t to convert + * @buf: (array length=size) (out caller-allocates): output string + * @size: the allocated size of @buf + * + * Converts an #hb_variation_t into a `NULL`-terminated string in the format + * understood by hb_variation_from_string(). The client in responsible for + * allocating big enough size for @buf, 128 bytes is more than enough. + * + * Since: 1.4.2 + */ +void +hb_variation_to_string (hb_variation_t *variation, + char *buf, unsigned int size) +{ + if (unlikely (!size)) return; + + char s[128]; + unsigned int len = 0; + hb_tag_to_string (variation->tag, s + len); + len += 4; + while (len && s[len - 1] == ' ') + len--; + s[len++] = '='; + + hb_locale_t oldlocale HB_UNUSED; + oldlocale = hb_uselocale (get_C_locale ()); + len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", (double) variation->value)); + (void) hb_uselocale (oldlocale); + + assert (len < ARRAY_LENGTH (s)); + len = hb_min (len, size - 1); + hb_memcpy (buf, s, len); + buf[len] = '\0'; +} + +/** + * hb_color_get_alpha: + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the alpha channel of the given @color. + * + * Return value: Alpha channel value + * + * Since: 2.1.0 + */ +uint8_t +(hb_color_get_alpha) (hb_color_t color) +{ + return hb_color_get_alpha (color); +} + +/** + * hb_color_get_red: + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the red channel of the given @color. + * + * Return value: Red channel value + * + * Since: 2.1.0 + */ +uint8_t +(hb_color_get_red) (hb_color_t color) +{ + return hb_color_get_red (color); +} + +/** + * hb_color_get_green: + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the green channel of the given @color. + * + * Return value: Green channel value + * + * Since: 2.1.0 + */ +uint8_t +(hb_color_get_green) (hb_color_t color) +{ + return hb_color_get_green (color); +} + +/** + * hb_color_get_blue: + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the blue channel of the given @color. + * + * Return value: Blue channel value + * + * Since: 2.1.0 + */ +uint8_t +(hb_color_get_blue) (hb_color_t color) +{ + return hb_color_get_blue (color); +} + + +/* If there is no visibility control, then hb-static.cc will NOT + * define anything. Instead, we get it to define one set in here + * only, so only libharfbuzz.so defines them, not other libs. */ +#ifdef HB_NO_VISIBILITY +#undef HB_NO_VISIBILITY +#include "hb-static.cc" +#define HB_NO_VISIBILITY 1 +#endif diff --git a/gfx/harfbuzz/src/hb-common.h b/gfx/harfbuzz/src/hb-common.h new file mode 100644 index 0000000000..a5da4e76a3 --- /dev/null +++ b/gfx/harfbuzz/src/hb-common.h @@ -0,0 +1,928 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_COMMON_H +#define HB_COMMON_H + +#ifndef HB_EXTERN +#define HB_EXTERN extern +#endif + +#ifndef HB_BEGIN_DECLS +# ifdef __cplusplus +# define HB_BEGIN_DECLS extern "C" { +# define HB_END_DECLS } +# else /* !__cplusplus */ +# define HB_BEGIN_DECLS +# define HB_END_DECLS +# endif /* !__cplusplus */ +#endif + +#if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \ + defined (_sgi) || defined (__sun) || defined (sun) || \ + defined (__digital__) || defined (__HP_cc) +# include +#elif defined (_AIX) +# include +#elif defined (_MSC_VER) && _MSC_VER < 1600 +/* VS 2010 (_MSC_VER 1600) has stdint.h */ +typedef __int8 int8_t; +typedef unsigned __int8 uint8_t; +typedef __int16 int16_t; +typedef unsigned __int16 uint16_t; +typedef __int32 int32_t; +typedef unsigned __int32 uint32_t; +typedef __int64 int64_t; +typedef unsigned __int64 uint64_t; +#elif defined (__KERNEL__) +# include +#else +# include +#endif + +#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +#define HB_DEPRECATED __attribute__((__deprecated__)) +#elif defined(_MSC_VER) && (_MSC_VER >= 1300) +#define HB_DEPRECATED __declspec(deprecated) +#else +#define HB_DEPRECATED +#endif + +#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)) +#define HB_DEPRECATED_FOR(f) __attribute__((__deprecated__("Use '" #f "' instead"))) +#elif defined(_MSC_FULL_VER) && (_MSC_FULL_VER > 140050320) +#define HB_DEPRECATED_FOR(f) __declspec(deprecated("is deprecated. Use '" #f "' instead")) +#else +#define HB_DEPRECATED_FOR(f) HB_DEPRECATED +#endif + + +HB_BEGIN_DECLS + +/** + * hb_bool_t: + * + * Data type for booleans. + * + **/ +typedef int hb_bool_t; + +/** + * hb_codepoint_t: + * + * Data type for holding Unicode codepoints. Also + * used to hold glyph IDs. + * + **/ +typedef uint32_t hb_codepoint_t; +/** + * hb_position_t: + * + * Data type for holding a single coordinate value. + * Contour points and other multi-dimensional data are + * stored as tuples of #hb_position_t's. + * + **/ +typedef int32_t hb_position_t; +/** + * hb_mask_t: + * + * Data type for bitmasks. + * + **/ +typedef uint32_t hb_mask_t; + +typedef union _hb_var_int_t { + uint32_t u32; + int32_t i32; + uint16_t u16[2]; + int16_t i16[2]; + uint8_t u8[4]; + int8_t i8[4]; +} hb_var_int_t; + +typedef union _hb_var_num_t { + float f; + uint32_t u32; + int32_t i32; + uint16_t u16[2]; + int16_t i16[2]; + uint8_t u8[4]; + int8_t i8[4]; +} hb_var_num_t; + + +/* hb_tag_t */ + +/** + * hb_tag_t: + * + * Data type for tag identifiers. Tags are four + * byte integers, each byte representing a character. + * + * Tags are used to identify tables, design-variation axes, + * scripts, languages, font features, and baselines with + * human-readable names. + * + **/ +typedef uint32_t hb_tag_t; + +/** + * HB_TAG: + * @c1: 1st character of the tag + * @c2: 2nd character of the tag + * @c3: 3rd character of the tag + * @c4: 4th character of the tag + * + * Constructs an #hb_tag_t from four character literals. + * + **/ +#define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint32_t)(c1)&0xFF)<<24)|(((uint32_t)(c2)&0xFF)<<16)|(((uint32_t)(c3)&0xFF)<<8)|((uint32_t)(c4)&0xFF))) + +/** + * HB_UNTAG: + * @tag: an #hb_tag_t + * + * Extracts four character literals from an #hb_tag_t. + * + * Since: 0.6.0 + * + **/ +#define HB_UNTAG(tag) (uint8_t)(((tag)>>24)&0xFF), (uint8_t)(((tag)>>16)&0xFF), (uint8_t)(((tag)>>8)&0xFF), (uint8_t)((tag)&0xFF) + +/** + * HB_TAG_NONE: + * + * Unset #hb_tag_t. + */ +#define HB_TAG_NONE HB_TAG(0,0,0,0) +/** + * HB_TAG_MAX: + * + * Maximum possible unsigned #hb_tag_t. + * + * Since: 0.9.26 + */ +#define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff) +/** + * HB_TAG_MAX_SIGNED: + * + * Maximum possible signed #hb_tag_t. + * + * Since: 0.9.33 + */ +#define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff) + +/* len=-1 means str is NUL-terminated. */ +HB_EXTERN hb_tag_t +hb_tag_from_string (const char *str, int len); + +/* buf should have 4 bytes. */ +HB_EXTERN void +hb_tag_to_string (hb_tag_t tag, char *buf); + + +/** + * hb_direction_t: + * @HB_DIRECTION_INVALID: Initial, unset direction. + * @HB_DIRECTION_LTR: Text is set horizontally from left to right. + * @HB_DIRECTION_RTL: Text is set horizontally from right to left. + * @HB_DIRECTION_TTB: Text is set vertically from top to bottom. + * @HB_DIRECTION_BTT: Text is set vertically from bottom to top. + * + * The direction of a text segment or buffer. + * + * A segment can also be tested for horizontal or vertical + * orientation (irrespective of specific direction) with + * HB_DIRECTION_IS_HORIZONTAL() or HB_DIRECTION_IS_VERTICAL(). + * + */ +typedef enum { + HB_DIRECTION_INVALID = 0, + HB_DIRECTION_LTR = 4, + HB_DIRECTION_RTL, + HB_DIRECTION_TTB, + HB_DIRECTION_BTT +} hb_direction_t; + +/* len=-1 means str is NUL-terminated */ +HB_EXTERN hb_direction_t +hb_direction_from_string (const char *str, int len); + +HB_EXTERN const char * +hb_direction_to_string (hb_direction_t direction); + +/** + * HB_DIRECTION_IS_VALID: + * @dir: #hb_direction_t to test + * + * Tests whether a text direction is valid. + * + **/ +#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) +/* Direction must be valid for the following */ +/** + * HB_DIRECTION_IS_HORIZONTAL: + * @dir: #hb_direction_t to test + * + * Tests whether a text direction is horizontal. Requires + * that the direction be valid. + * + **/ +#define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) +/** + * HB_DIRECTION_IS_VERTICAL: + * @dir: #hb_direction_t to test + * + * Tests whether a text direction is vertical. Requires + * that the direction be valid. + * + **/ +#define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) +/** + * HB_DIRECTION_IS_FORWARD: + * @dir: #hb_direction_t to test + * + * Tests whether a text direction moves forward (from left to right, or from + * top to bottom). Requires that the direction be valid. + * + **/ +#define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) +/** + * HB_DIRECTION_IS_BACKWARD: + * @dir: #hb_direction_t to test + * + * Tests whether a text direction moves backward (from right to left, or from + * bottom to top). Requires that the direction be valid. + * + **/ +#define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) +/** + * HB_DIRECTION_REVERSE: + * @dir: #hb_direction_t to reverse + * + * Reverses a text direction. Requires that the direction + * be valid. + * + **/ +#define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) + + +/* hb_language_t */ + +/** + * hb_language_t: + * + * Data type for languages. Each #hb_language_t corresponds to a BCP 47 + * language tag. + * + */ +typedef const struct hb_language_impl_t *hb_language_t; + +HB_EXTERN hb_language_t +hb_language_from_string (const char *str, int len); + +HB_EXTERN const char * +hb_language_to_string (hb_language_t language); + +/** + * HB_LANGUAGE_INVALID: + * + * An unset #hb_language_t. + * + * Since: 0.6.0 + */ +#define HB_LANGUAGE_INVALID ((hb_language_t) 0) + +HB_EXTERN hb_language_t +hb_language_get_default (void); + +HB_EXTERN hb_bool_t +hb_language_matches (hb_language_t language, + hb_language_t specific); + +/** + * hb_script_t: + * @HB_SCRIPT_COMMON: `Zyyy` + * @HB_SCRIPT_INHERITED: `Zinh` + * @HB_SCRIPT_UNKNOWN: `Zzzz` + * @HB_SCRIPT_ARABIC: `Arab` + * @HB_SCRIPT_ARMENIAN: `Armn` + * @HB_SCRIPT_BENGALI: `Beng` + * @HB_SCRIPT_CYRILLIC: `Cyrl` + * @HB_SCRIPT_DEVANAGARI: `Deva` + * @HB_SCRIPT_GEORGIAN: `Geor` + * @HB_SCRIPT_GREEK: `Grek` + * @HB_SCRIPT_GUJARATI: `Gujr` + * @HB_SCRIPT_GURMUKHI: `Guru` + * @HB_SCRIPT_HANGUL: `Hang` + * @HB_SCRIPT_HAN: `Hani` + * @HB_SCRIPT_HEBREW: `Hebr` + * @HB_SCRIPT_HIRAGANA: `Hira` + * @HB_SCRIPT_KANNADA: `Knda` + * @HB_SCRIPT_KATAKANA: `Kana` + * @HB_SCRIPT_LAO: `Laoo` + * @HB_SCRIPT_LATIN: `Latn` + * @HB_SCRIPT_MALAYALAM: `Mlym` + * @HB_SCRIPT_ORIYA: `Orya` + * @HB_SCRIPT_TAMIL: `Taml` + * @HB_SCRIPT_TELUGU: `Telu` + * @HB_SCRIPT_THAI: `Thai` + * @HB_SCRIPT_TIBETAN: `Tibt` + * @HB_SCRIPT_BOPOMOFO: `Bopo` + * @HB_SCRIPT_BRAILLE: `Brai` + * @HB_SCRIPT_CANADIAN_SYLLABICS: `Cans` + * @HB_SCRIPT_CHEROKEE: `Cher` + * @HB_SCRIPT_ETHIOPIC: `Ethi` + * @HB_SCRIPT_KHMER: `Khmr` + * @HB_SCRIPT_MONGOLIAN: `Mong` + * @HB_SCRIPT_MYANMAR: `Mymr` + * @HB_SCRIPT_OGHAM: `Ogam` + * @HB_SCRIPT_RUNIC: `Runr` + * @HB_SCRIPT_SINHALA: `Sinh` + * @HB_SCRIPT_SYRIAC: `Syrc` + * @HB_SCRIPT_THAANA: `Thaa` + * @HB_SCRIPT_YI: `Yiii` + * @HB_SCRIPT_DESERET: `Dsrt` + * @HB_SCRIPT_GOTHIC: `Goth` + * @HB_SCRIPT_OLD_ITALIC: `Ital` + * @HB_SCRIPT_BUHID: `Buhd` + * @HB_SCRIPT_HANUNOO: `Hano` + * @HB_SCRIPT_TAGALOG: `Tglg` + * @HB_SCRIPT_TAGBANWA: `Tagb` + * @HB_SCRIPT_CYPRIOT: `Cprt` + * @HB_SCRIPT_LIMBU: `Limb` + * @HB_SCRIPT_LINEAR_B: `Linb` + * @HB_SCRIPT_OSMANYA: `Osma` + * @HB_SCRIPT_SHAVIAN: `Shaw` + * @HB_SCRIPT_TAI_LE: `Tale` + * @HB_SCRIPT_UGARITIC: `Ugar` + * @HB_SCRIPT_BUGINESE: `Bugi` + * @HB_SCRIPT_COPTIC: `Copt` + * @HB_SCRIPT_GLAGOLITIC: `Glag` + * @HB_SCRIPT_KHAROSHTHI: `Khar` + * @HB_SCRIPT_NEW_TAI_LUE: `Talu` + * @HB_SCRIPT_OLD_PERSIAN: `Xpeo` + * @HB_SCRIPT_SYLOTI_NAGRI: `Sylo` + * @HB_SCRIPT_TIFINAGH: `Tfng` + * @HB_SCRIPT_BALINESE: `Bali` + * @HB_SCRIPT_CUNEIFORM: `Xsux` + * @HB_SCRIPT_NKO: `Nkoo` + * @HB_SCRIPT_PHAGS_PA: `Phag` + * @HB_SCRIPT_PHOENICIAN: `Phnx` + * @HB_SCRIPT_CARIAN: `Cari` + * @HB_SCRIPT_CHAM: `Cham` + * @HB_SCRIPT_KAYAH_LI: `Kali` + * @HB_SCRIPT_LEPCHA: `Lepc` + * @HB_SCRIPT_LYCIAN: `Lyci` + * @HB_SCRIPT_LYDIAN: `Lydi` + * @HB_SCRIPT_OL_CHIKI: `Olck` + * @HB_SCRIPT_REJANG: `Rjng` + * @HB_SCRIPT_SAURASHTRA: `Saur` + * @HB_SCRIPT_SUNDANESE: `Sund` + * @HB_SCRIPT_VAI: `Vaii` + * @HB_SCRIPT_AVESTAN: `Avst` + * @HB_SCRIPT_BAMUM: `Bamu` + * @HB_SCRIPT_EGYPTIAN_HIEROGLYPHS: `Egyp` + * @HB_SCRIPT_IMPERIAL_ARAMAIC: `Armi` + * @HB_SCRIPT_INSCRIPTIONAL_PAHLAVI: `Phli` + * @HB_SCRIPT_INSCRIPTIONAL_PARTHIAN: `Prti` + * @HB_SCRIPT_JAVANESE: `Java` + * @HB_SCRIPT_KAITHI: `Kthi` + * @HB_SCRIPT_LISU: `Lisu` + * @HB_SCRIPT_MEETEI_MAYEK: `Mtei` + * @HB_SCRIPT_OLD_SOUTH_ARABIAN: `Sarb` + * @HB_SCRIPT_OLD_TURKIC: `Orkh` + * @HB_SCRIPT_SAMARITAN: `Samr` + * @HB_SCRIPT_TAI_THAM: `Lana` + * @HB_SCRIPT_TAI_VIET: `Tavt` + * @HB_SCRIPT_BATAK: `Batk` + * @HB_SCRIPT_BRAHMI: `Brah` + * @HB_SCRIPT_MANDAIC: `Mand` + * @HB_SCRIPT_CHAKMA: `Cakm` + * @HB_SCRIPT_MEROITIC_CURSIVE: `Merc` + * @HB_SCRIPT_MEROITIC_HIEROGLYPHS: `Mero` + * @HB_SCRIPT_MIAO: `Plrd` + * @HB_SCRIPT_SHARADA: `Shrd` + * @HB_SCRIPT_SORA_SOMPENG: `Sora` + * @HB_SCRIPT_TAKRI: `Takr` + * @HB_SCRIPT_BASSA_VAH: `Bass`, Since: 0.9.30 + * @HB_SCRIPT_CAUCASIAN_ALBANIAN: `Aghb`, Since: 0.9.30 + * @HB_SCRIPT_DUPLOYAN: `Dupl`, Since: 0.9.30 + * @HB_SCRIPT_ELBASAN: `Elba`, Since: 0.9.30 + * @HB_SCRIPT_GRANTHA: `Gran`, Since: 0.9.30 + * @HB_SCRIPT_KHOJKI: `Khoj`, Since: 0.9.30 + * @HB_SCRIPT_KHUDAWADI: `Sind`, Since: 0.9.30 + * @HB_SCRIPT_LINEAR_A: `Lina`, Since: 0.9.30 + * @HB_SCRIPT_MAHAJANI: `Mahj`, Since: 0.9.30 + * @HB_SCRIPT_MANICHAEAN: `Mani`, Since: 0.9.30 + * @HB_SCRIPT_MENDE_KIKAKUI: `Mend`, Since: 0.9.30 + * @HB_SCRIPT_MODI: `Modi`, Since: 0.9.30 + * @HB_SCRIPT_MRO: `Mroo`, Since: 0.9.30 + * @HB_SCRIPT_NABATAEAN: `Nbat`, Since: 0.9.30 + * @HB_SCRIPT_OLD_NORTH_ARABIAN: `Narb`, Since: 0.9.30 + * @HB_SCRIPT_OLD_PERMIC: `Perm`, Since: 0.9.30 + * @HB_SCRIPT_PAHAWH_HMONG: `Hmng`, Since: 0.9.30 + * @HB_SCRIPT_PALMYRENE: `Palm`, Since: 0.9.30 + * @HB_SCRIPT_PAU_CIN_HAU: `Pauc`, Since: 0.9.30 + * @HB_SCRIPT_PSALTER_PAHLAVI: `Phlp`, Since: 0.9.30 + * @HB_SCRIPT_SIDDHAM: `Sidd`, Since: 0.9.30 + * @HB_SCRIPT_TIRHUTA: `Tirh`, Since: 0.9.30 + * @HB_SCRIPT_WARANG_CITI: `Wara`, Since: 0.9.30 + * @HB_SCRIPT_AHOM: `Ahom`, Since: 0.9.30 + * @HB_SCRIPT_ANATOLIAN_HIEROGLYPHS: `Hluw`, Since: 0.9.30 + * @HB_SCRIPT_HATRAN: `Hatr`, Since: 0.9.30 + * @HB_SCRIPT_MULTANI: `Mult`, Since: 0.9.30 + * @HB_SCRIPT_OLD_HUNGARIAN: `Hung`, Since: 0.9.30 + * @HB_SCRIPT_SIGNWRITING: `Sgnw`, Since: 0.9.30 + * @HB_SCRIPT_ADLAM: `Adlm`, Since: 1.3.0 + * @HB_SCRIPT_BHAIKSUKI: `Bhks`, Since: 1.3.0 + * @HB_SCRIPT_MARCHEN: `Marc`, Since: 1.3.0 + * @HB_SCRIPT_OSAGE: `Osge`, Since: 1.3.0 + * @HB_SCRIPT_TANGUT: `Tang`, Since: 1.3.0 + * @HB_SCRIPT_NEWA: `Newa`, Since: 1.3.0 + * @HB_SCRIPT_MASARAM_GONDI: `Gonm`, Since: 1.6.0 + * @HB_SCRIPT_NUSHU: `Nshu`, Since: 1.6.0 + * @HB_SCRIPT_SOYOMBO: `Soyo`, Since: 1.6.0 + * @HB_SCRIPT_ZANABAZAR_SQUARE: `Zanb`, Since: 1.6.0 + * @HB_SCRIPT_DOGRA: `Dogr`, Since: 1.8.0 + * @HB_SCRIPT_GUNJALA_GONDI: `Gong`, Since: 1.8.0 + * @HB_SCRIPT_HANIFI_ROHINGYA: `Rohg`, Since: 1.8.0 + * @HB_SCRIPT_MAKASAR: `Maka`, Since: 1.8.0 + * @HB_SCRIPT_MEDEFAIDRIN: `Medf`, Since: 1.8.0 + * @HB_SCRIPT_OLD_SOGDIAN: `Sogo`, Since: 1.8.0 + * @HB_SCRIPT_SOGDIAN: `Sogd`, Since: 1.8.0 + * @HB_SCRIPT_ELYMAIC: `Elym`, Since: 2.4.0 + * @HB_SCRIPT_NANDINAGARI: `Nand`, Since: 2.4.0 + * @HB_SCRIPT_NYIAKENG_PUACHUE_HMONG: `Hmnp`, Since: 2.4.0 + * @HB_SCRIPT_WANCHO: `Wcho`, Since: 2.4.0 + * @HB_SCRIPT_CHORASMIAN: `Chrs`, Since: 2.6.7 + * @HB_SCRIPT_DIVES_AKURU: `Diak`, Since: 2.6.7 + * @HB_SCRIPT_KHITAN_SMALL_SCRIPT: `Kits`, Since: 2.6.7 + * @HB_SCRIPT_YEZIDI: `Yezi`, Since: 2.6.7 + * @HB_SCRIPT_CYPRO_MINOAN: `Cpmn`, Since: 3.0.0 + * @HB_SCRIPT_OLD_UYGHUR: `Ougr`, Since: 3.0.0 + * @HB_SCRIPT_TANGSA: `Tnsa`, Since: 3.0.0 + * @HB_SCRIPT_TOTO: `Toto`, Since: 3.0.0 + * @HB_SCRIPT_VITHKUQI: `Vith`, Since: 3.0.0 + * @HB_SCRIPT_MATH: `Zmth`, Since: 3.4.0 + * @HB_SCRIPT_KAWI: `Kawi`, Since: 5.2.0 + * @HB_SCRIPT_NAG_MUNDARI: `Nagm`, Since: 5.2.0 + * @HB_SCRIPT_INVALID: No script set + * + * Data type for scripts. Each #hb_script_t's value is an #hb_tag_t corresponding + * to the four-letter values defined by [ISO 15924](https://unicode.org/iso15924/). + * + * See also the Script (sc) property of the Unicode Character Database. + * + **/ + +/* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */ +typedef enum +{ + HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), /*1.1*/ + HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), /*1.1*/ + HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), /*5.0*/ + + HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'), /*1.1*/ + HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'), /*1.1*/ + HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'), /*1.1*/ + HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'), /*1.1*/ + HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'), /*1.1*/ + HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'), /*1.1*/ + HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'), /*1.1*/ + HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'), /*1.1*/ + HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'), /*1.1*/ + HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'), /*1.1*/ + HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'), /*1.1*/ + HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'), /*1.1*/ + HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'), /*1.1*/ + HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'), /*1.1*/ + HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'), /*1.1*/ + HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'), /*1.1*/ + HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'), /*1.1*/ + HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'), /*1.1*/ + HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'), /*1.1*/ + HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'), /*1.1*/ + HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'), /*1.1*/ + HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'), /*1.1*/ + + HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), /*2.0*/ + + HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'), /*3.0*/ + HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'), /*3.0*/ + HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'), /*3.0*/ + HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'), /*3.0*/ + HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'), /*3.0*/ + HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'), /*3.0*/ + HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'), /*3.0*/ + HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'), /*3.0*/ + HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'), /*3.0*/ + HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'), /*3.0*/ + HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'), /*3.0*/ + HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'), /*3.0*/ + HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'), /*3.0*/ + HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'), /*3.0*/ + + HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'), /*3.1*/ + HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'), /*3.1*/ + HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'), /*3.1*/ + + HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'), /*3.2*/ + HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'), /*3.2*/ + HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'), /*3.2*/ + HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'), /*3.2*/ + + HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'), /*4.0*/ + HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'), /*4.0*/ + HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'), /*4.0*/ + HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'), /*4.0*/ + HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'), /*4.0*/ + HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'), /*4.0*/ + HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'), /*4.0*/ + + HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'), /*4.1*/ + HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'), /*4.1*/ + HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'), /*4.1*/ + HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'), /*4.1*/ + HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'), /*4.1*/ + HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'), /*4.1*/ + HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'), /*4.1*/ + HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'), /*4.1*/ + + HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'), /*5.0*/ + HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'), /*5.0*/ + HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'), /*5.0*/ + HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'), /*5.0*/ + HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'), /*5.0*/ + + HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'), /*5.1*/ + HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'), /*5.1*/ + HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'), /*5.1*/ + HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'), /*5.1*/ + HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'), /*5.1*/ + HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'), /*5.1*/ + HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'), /*5.1*/ + HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'), /*5.1*/ + HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'), /*5.1*/ + HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'), /*5.1*/ + HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'), /*5.1*/ + + HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'), /*5.2*/ + HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'), /*5.2*/ + HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'), /*5.2*/ + HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'), /*5.2*/ + HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'), /*5.2*/ + HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'), /*5.2*/ + HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'), /*5.2*/ + HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'), /*5.2*/ + HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'), /*5.2*/ + HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'), /*5.2*/ + HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'), /*5.2*/ + HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'), /*5.2*/ + HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'), /*5.2*/ + HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'), /*5.2*/ + HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'), /*5.2*/ + + HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'), /*6.0*/ + HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'), /*6.0*/ + HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'), /*6.0*/ + + HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'), /*6.1*/ + HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'), /*6.1*/ + HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'), /*6.1*/ + HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'), /*6.1*/ + HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'), /*6.1*/ + HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'), /*6.1*/ + HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'), /*6.1*/ + + /* + * Since: 0.9.30 + */ + HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'), /*7.0*/ + HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'), /*7.0*/ + HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'), /*7.0*/ + HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'), /*7.0*/ + HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'), /*7.0*/ + HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'), /*7.0*/ + HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'), /*7.0*/ + HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'), /*7.0*/ + HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'), /*7.0*/ + HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'), /*7.0*/ + HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'), /*7.0*/ + HB_SCRIPT_MODI = HB_TAG ('M','o','d','i'), /*7.0*/ + HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'), /*7.0*/ + HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'), /*7.0*/ + HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'), /*7.0*/ + HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'), /*7.0*/ + HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'), /*7.0*/ + HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'), /*7.0*/ + HB_SCRIPT_PAU_CIN_HAU = HB_TAG ('P','a','u','c'), /*7.0*/ + HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'), /*7.0*/ + HB_SCRIPT_SIDDHAM = HB_TAG ('S','i','d','d'), /*7.0*/ + HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'), /*7.0*/ + HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'), /*7.0*/ + + HB_SCRIPT_AHOM = HB_TAG ('A','h','o','m'), /*8.0*/ + HB_SCRIPT_ANATOLIAN_HIEROGLYPHS = HB_TAG ('H','l','u','w'), /*8.0*/ + HB_SCRIPT_HATRAN = HB_TAG ('H','a','t','r'), /*8.0*/ + HB_SCRIPT_MULTANI = HB_TAG ('M','u','l','t'), /*8.0*/ + HB_SCRIPT_OLD_HUNGARIAN = HB_TAG ('H','u','n','g'), /*8.0*/ + HB_SCRIPT_SIGNWRITING = HB_TAG ('S','g','n','w'), /*8.0*/ + + /* + * Since 1.3.0 + */ + HB_SCRIPT_ADLAM = HB_TAG ('A','d','l','m'), /*9.0*/ + HB_SCRIPT_BHAIKSUKI = HB_TAG ('B','h','k','s'), /*9.0*/ + HB_SCRIPT_MARCHEN = HB_TAG ('M','a','r','c'), /*9.0*/ + HB_SCRIPT_OSAGE = HB_TAG ('O','s','g','e'), /*9.0*/ + HB_SCRIPT_TANGUT = HB_TAG ('T','a','n','g'), /*9.0*/ + HB_SCRIPT_NEWA = HB_TAG ('N','e','w','a'), /*9.0*/ + + /* + * Since 1.6.0 + */ + HB_SCRIPT_MASARAM_GONDI = HB_TAG ('G','o','n','m'), /*10.0*/ + HB_SCRIPT_NUSHU = HB_TAG ('N','s','h','u'), /*10.0*/ + HB_SCRIPT_SOYOMBO = HB_TAG ('S','o','y','o'), /*10.0*/ + HB_SCRIPT_ZANABAZAR_SQUARE = HB_TAG ('Z','a','n','b'), /*10.0*/ + + /* + * Since 1.8.0 + */ + HB_SCRIPT_DOGRA = HB_TAG ('D','o','g','r'), /*11.0*/ + HB_SCRIPT_GUNJALA_GONDI = HB_TAG ('G','o','n','g'), /*11.0*/ + HB_SCRIPT_HANIFI_ROHINGYA = HB_TAG ('R','o','h','g'), /*11.0*/ + HB_SCRIPT_MAKASAR = HB_TAG ('M','a','k','a'), /*11.0*/ + HB_SCRIPT_MEDEFAIDRIN = HB_TAG ('M','e','d','f'), /*11.0*/ + HB_SCRIPT_OLD_SOGDIAN = HB_TAG ('S','o','g','o'), /*11.0*/ + HB_SCRIPT_SOGDIAN = HB_TAG ('S','o','g','d'), /*11.0*/ + + /* + * Since 2.4.0 + */ + HB_SCRIPT_ELYMAIC = HB_TAG ('E','l','y','m'), /*12.0*/ + HB_SCRIPT_NANDINAGARI = HB_TAG ('N','a','n','d'), /*12.0*/ + HB_SCRIPT_NYIAKENG_PUACHUE_HMONG = HB_TAG ('H','m','n','p'), /*12.0*/ + HB_SCRIPT_WANCHO = HB_TAG ('W','c','h','o'), /*12.0*/ + + /* + * Since 2.6.7 + */ + HB_SCRIPT_CHORASMIAN = HB_TAG ('C','h','r','s'), /*13.0*/ + HB_SCRIPT_DIVES_AKURU = HB_TAG ('D','i','a','k'), /*13.0*/ + HB_SCRIPT_KHITAN_SMALL_SCRIPT = HB_TAG ('K','i','t','s'), /*13.0*/ + HB_SCRIPT_YEZIDI = HB_TAG ('Y','e','z','i'), /*13.0*/ + + /* + * Since 3.0.0 + */ + HB_SCRIPT_CYPRO_MINOAN = HB_TAG ('C','p','m','n'), /*14.0*/ + HB_SCRIPT_OLD_UYGHUR = HB_TAG ('O','u','g','r'), /*14.0*/ + HB_SCRIPT_TANGSA = HB_TAG ('T','n','s','a'), /*14.0*/ + HB_SCRIPT_TOTO = HB_TAG ('T','o','t','o'), /*14.0*/ + HB_SCRIPT_VITHKUQI = HB_TAG ('V','i','t','h'), /*14.0*/ + + /* + * Since 3.4.0 + */ + HB_SCRIPT_MATH = HB_TAG ('Z','m','t','h'), + + /* + * Since 5.2.0 + */ + HB_SCRIPT_KAWI = HB_TAG ('K','a','w','i'), /*15.0*/ + HB_SCRIPT_NAG_MUNDARI = HB_TAG ('N','a','g','m'), /*15.0*/ + + /* No script set. */ + HB_SCRIPT_INVALID = HB_TAG_NONE, + + /*< private >*/ + + /* Dummy values to ensure any hb_tag_t value can be passed/stored as hb_script_t + * without risking undefined behavior. We have two, for historical reasons. + * HB_TAG_MAX used to be unsigned, but that was invalid Ansi C, so was changed + * to _HB_SCRIPT_MAX_VALUE to be equal to HB_TAG_MAX_SIGNED as well. + * + * See this thread for technicalities: + * + * https://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html + */ + _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX_SIGNED, /*< skip >*/ + _HB_SCRIPT_MAX_VALUE_SIGNED = HB_TAG_MAX_SIGNED /*< skip >*/ + +} hb_script_t; + + +/* Script functions */ + +HB_EXTERN hb_script_t +hb_script_from_iso15924_tag (hb_tag_t tag); + +HB_EXTERN hb_script_t +hb_script_from_string (const char *str, int len); + +HB_EXTERN hb_tag_t +hb_script_to_iso15924_tag (hb_script_t script); + +HB_EXTERN hb_direction_t +hb_script_get_horizontal_direction (hb_script_t script); + + +/* User data */ + +/** + * hb_user_data_key_t: + * + * Data structure for holding user-data keys. + * + **/ +typedef struct hb_user_data_key_t { + /*< private >*/ + char unused; +} hb_user_data_key_t; + +/** + * hb_destroy_func_t: + * @user_data: the data to be destroyed + * + * A virtual method for destroy user-data callbacks. + * + */ +typedef void (*hb_destroy_func_t) (void *user_data); + + +/* Font features and variations. */ + +/** + * HB_FEATURE_GLOBAL_START: + * + * Special setting for #hb_feature_t.start to apply the feature from the start + * of the buffer. + * + * Since: 2.0.0 + */ +#define HB_FEATURE_GLOBAL_START 0 + +/** + * HB_FEATURE_GLOBAL_END: + * + * Special setting for #hb_feature_t.end to apply the feature from to the end + * of the buffer. + * + * Since: 2.0.0 + */ +#define HB_FEATURE_GLOBAL_END ((unsigned int) -1) + +/** + * hb_feature_t: + * @tag: The #hb_tag_t tag of the feature + * @value: The value of the feature. 0 disables the feature, non-zero (usually + * 1) enables the feature. For features implemented as lookup type 3 (like + * 'salt') the @value is a one based index into the alternates. + * @start: the cluster to start applying this feature setting (inclusive). + * @end: the cluster to end applying this feature setting (exclusive). + * + * The #hb_feature_t is the structure that holds information about requested + * feature application. The feature will be applied with the given value to all + * glyphs which are in clusters between @start (inclusive) and @end (exclusive). + * Setting start to #HB_FEATURE_GLOBAL_START and end to #HB_FEATURE_GLOBAL_END + * specifies that the feature always applies to the entire buffer. + */ +typedef struct hb_feature_t { + hb_tag_t tag; + uint32_t value; + unsigned int start; + unsigned int end; +} hb_feature_t; + +HB_EXTERN hb_bool_t +hb_feature_from_string (const char *str, int len, + hb_feature_t *feature); + +HB_EXTERN void +hb_feature_to_string (hb_feature_t *feature, + char *buf, unsigned int size); + +/** + * hb_variation_t: + * @tag: The #hb_tag_t tag of the variation-axis name + * @value: The value of the variation axis + * + * Data type for holding variation data. Registered OpenType + * variation-axis tags are listed in + * [OpenType Axis Tag Registry](https://docs.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg). + * + * Since: 1.4.2 + */ +typedef struct hb_variation_t { + hb_tag_t tag; + float value; +} hb_variation_t; + +HB_EXTERN hb_bool_t +hb_variation_from_string (const char *str, int len, + hb_variation_t *variation); + +HB_EXTERN void +hb_variation_to_string (hb_variation_t *variation, + char *buf, unsigned int size); + +/** + * hb_color_t: + * + * Data type for holding color values. Colors are eight bits per + * channel RGB plus alpha transparency. + * + * Since: 2.1.0 + */ +typedef uint32_t hb_color_t; + +/** + * HB_COLOR: + * @b: blue channel value + * @g: green channel value + * @r: red channel value + * @a: alpha channel value + * + * Constructs an #hb_color_t from four integers. + * + * Since: 2.1.0 + */ +#define HB_COLOR(b,g,r,a) ((hb_color_t) HB_TAG ((b),(g),(r),(a))) + +HB_EXTERN uint8_t +hb_color_get_alpha (hb_color_t color); +#define hb_color_get_alpha(color) ((color) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_red (hb_color_t color); +#define hb_color_get_red(color) (((color) >> 8) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_green (hb_color_t color); +#define hb_color_get_green(color) (((color) >> 16) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_blue (hb_color_t color); +#define hb_color_get_blue(color) (((color) >> 24) & 0xFF) + +/** + * hb_glyph_extents_t: + * @x_bearing: Distance from the x-origin to the left extremum of the glyph. + * @y_bearing: Distance from the top extremum of the glyph to the y-origin. + * @width: Distance from the left extremum of the glyph to the right extremum. + * @height: Distance from the top extremum of the glyph to the bottom extremum. + * + * Glyph extent values, measured in font units. + * + * Note that @height is negative, in coordinate systems that grow up. + **/ +typedef struct hb_glyph_extents_t { + hb_position_t x_bearing; + hb_position_t y_bearing; + hb_position_t width; + hb_position_t height; +} hb_glyph_extents_t; + +/** + * hb_font_t: + * + * Data type for holding fonts. + * + */ +typedef struct hb_font_t hb_font_t; + +HB_END_DECLS + +#endif /* HB_COMMON_H */ diff --git a/gfx/harfbuzz/src/hb-config.hh b/gfx/harfbuzz/src/hb-config.hh new file mode 100644 index 0000000000..26f7cba83e --- /dev/null +++ b/gfx/harfbuzz/src/hb-config.hh @@ -0,0 +1,209 @@ +/* + * Copyright © 2019 Facebook, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Facebook Author(s): Behdad Esfahbod + */ + +#ifndef HB_CONFIG_HH +#define HB_CONFIG_HH + +#if 0 /* Make test happy. */ +#include "hb.hh" +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifndef HB_EXPERIMENTAL_API +#define HB_NO_BEYOND_64K +#define HB_NO_CUBIC_GLYF +#define HB_NO_VAR_COMPOSITES +#endif + +#ifdef HB_TINY +#define HB_LEAN +#define HB_MINI +#define HB_OPTIMIZE_SIZE +#define HB_OPTIMIZE_SIZE_MORE +#define HB_MINIMIZE_MEMORY_USAGE +#define HB_NO_MT +#define HB_NO_UCD_UNASSIGNED +#ifndef NDEBUG +#define NDEBUG +#endif +#endif + +#ifdef HB_LEAN +#define HB_DISABLE_DEPRECATED +#define HB_NDEBUG +#define HB_NO_ATEXIT +#define HB_NO_BUFFER_MESSAGE +#define HB_NO_BUFFER_SERIALIZE +#define HB_NO_BUFFER_VERIFY +#define HB_NO_BITMAP +#define HB_NO_CFF +#define HB_NO_COLOR +#define HB_NO_DRAW +#define HB_NO_ERRNO +#define HB_NO_FACE_COLLECT_UNICODES +#define HB_NO_GETENV +#define HB_NO_HINTING +#define HB_NO_LANGUAGE_LONG +#define HB_NO_LANGUAGE_PRIVATE_SUBTAG +#define HB_NO_LAYOUT_FEATURE_PARAMS +#define HB_NO_LAYOUT_COLLECT_GLYPHS +#define HB_NO_LAYOUT_RARELY_USED +#define HB_NO_LAYOUT_UNUSED +#define HB_NO_MATH +#define HB_NO_META +#define HB_NO_METRICS +#define HB_NO_MMAP +#define HB_NO_NAME +#define HB_NO_OPEN +#define HB_NO_OT_FONT_GLYPH_NAMES +#define HB_NO_OT_SHAPE_FRACTIONS +#define HB_NO_PAINT +#define HB_NO_SETLOCALE +#define HB_NO_STYLE +#define HB_NO_SUBSET_LAYOUT +#define HB_NO_VERTICAL +#define HB_NO_VAR +#endif + +#ifdef HB_MINI +#define HB_NO_AAT +#define HB_NO_LEGACY +#define HB_NO_BORING_EXPANSION +#endif + +#ifdef __OPTIMIZE_SIZE__ +#ifndef HB_OPTIMIZE_SIZE +#define HB_OPTIMIZE_SIZE +#endif +#endif + +#if defined(HAVE_CONFIG_OVERRIDE_H) || defined(HB_CONFIG_OVERRIDE_H) +#ifndef HB_CONFIG_OVERRIDE_H +#define HB_CONFIG_OVERRIDE_H "config-override.h" +#endif +#include HB_CONFIG_OVERRIDE_H +#endif + +/* Closure of options. */ + +#ifdef HB_NO_BORING_EXPANSION +#define HB_NO_AVAR2 +#define HB_NO_BEYOND_64K +#define HB_NO_CUBIC_GLYF +#define HB_NO_VAR_COMPOSITES +#endif + +#ifdef HB_DISABLE_DEPRECATED +#define HB_IF_NOT_DEPRECATED(x) +#else +#define HB_IF_NOT_DEPRECATED(x) x +#endif + +#ifdef HB_NO_SHAPER +#define HB_NO_OT_SHAPE +#define HB_NO_AAT_SHAPE +#endif + +#ifdef HB_NO_AAT +#define HB_NO_OT_NAME_LANGUAGE_AAT +#define HB_NO_AAT_SHAPE +#endif + +#ifdef HB_NO_BITMAP +#define HB_NO_OT_FONT_BITMAP +#endif + +#ifdef HB_NO_CFF +#define HB_NO_OT_FONT_CFF +#define HB_NO_SUBSET_CFF +#endif + +#ifdef HB_NO_DRAW +#define HB_NO_OUTLINE +#endif + +#ifdef HB_NO_GETENV +#define HB_NO_UNISCRIBE_BUG_COMPATIBLE +#endif + +#ifdef HB_NO_LEGACY +#define HB_NO_CMAP_LEGACY_SUBTABLES +#define HB_NO_FALLBACK_SHAPE +#define HB_NO_OT_KERN +#define HB_NO_OT_LAYOUT_BLOCKLIST +#define HB_NO_OT_SHAPE_FALLBACK +#endif + +#ifdef HB_NO_NAME +#define HB_NO_OT_NAME_LANGUAGE +#endif + +#ifdef HB_NO_OT +#define HB_NO_OT_FONT +#define HB_NO_OT_LAYOUT +#define HB_NO_OT_TAG +#define HB_NO_OT_SHAPE +#endif + +#ifdef HB_NO_OT_SHAPE +#define HB_NO_AAT_SHAPE +#endif + +#ifdef HB_NO_OT_SHAPE_FALLBACK +#define HB_NO_OT_SHAPER_ARABIC_FALLBACK +#define HB_NO_OT_SHAPER_HEBREW_FALLBACK +#define HB_NO_OT_SHAPER_THAI_FALLBACK +#define HB_NO_OT_SHAPER_VOWEL_CONSTRAINTS +#define HB_NO_OT_SHAPER_MYANMAR_ZAWGYI +#endif + +#ifdef HB_OPTIMIZE_SIZE_MORE +#define HB_NO_OT_LIGATURES_FAST_PATH +#endif + +#ifdef HB_MINIMIZE_MEMORY_USAGE +#define HB_NO_GDEF_CACHE +#define HB_NO_OT_LAYOUT_LOOKUP_CACHE +#define HB_NO_OT_FONT_ADVANCE_CACHE +#define HB_NO_OT_FONT_CMAP_CACHE +#endif + +#ifdef HB_OPTIMIZE_SIZE +#define HB_OPTIMIZE_SIZE_VAL 1 +#else +#define HB_OPTIMIZE_SIZE_VAL 0 +#endif + +#ifdef HB_MINIMIZE_MEMORY_USAGE +#define HB_MINIMIZE_MEMORY_USAGE_VAL 1 +#else +#define HB_MINIMIZE_MEMORY_USAGE_VAL 0 +#endif + +#endif /* HB_CONFIG_HH */ diff --git a/gfx/harfbuzz/src/hb-coretext.cc b/gfx/harfbuzz/src/hb-coretext.cc new file mode 100644 index 0000000000..a87cb5cd02 --- /dev/null +++ b/gfx/harfbuzz/src/hb-coretext.cc @@ -0,0 +1,1197 @@ +/* + * Copyright © 2012,2013 Mozilla Foundation. + * Copyright © 2012,2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Mozilla Author(s): Jonathan Kew + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_CORETEXT + +#include "hb-shaper-impl.hh" + +#include "hb-coretext.h" +#include "hb-aat-layout.hh" + + +/** + * SECTION:hb-coretext + * @title: hb-coretext + * @short_description: CoreText integration + * @include: hb-coretext.h + * + * Functions for using HarfBuzz with the CoreText fonts. + **/ + +/* https://developer.apple.com/documentation/coretext/1508745-ctfontcreatewithgraphicsfont */ +#define HB_CORETEXT_DEFAULT_FONT_SIZE 12.f + +static void +release_table_data (void *user_data) +{ + CFDataRef cf_data = reinterpret_cast (user_data); + CFRelease(cf_data); +} + +static hb_blob_t * +_hb_cg_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + CGFontRef cg_font = reinterpret_cast (user_data); + CFDataRef cf_data = CGFontCopyTableForTag (cg_font, tag); + if (unlikely (!cf_data)) + return nullptr; + + const char *data = reinterpret_cast (CFDataGetBytePtr (cf_data)); + const size_t length = CFDataGetLength (cf_data); + if (!data || !length) + { + CFRelease (cf_data); + return nullptr; + } + + return hb_blob_create (data, length, HB_MEMORY_MODE_READONLY, + reinterpret_cast (const_cast<__CFData *> (cf_data)), + release_table_data); +} + +static void +_hb_cg_font_release (void *data) +{ + CGFontRelease ((CGFontRef) data); +} + + +static CTFontDescriptorRef +get_last_resort_font_desc () +{ + // TODO Handle allocation failures? + CTFontDescriptorRef last_resort = CTFontDescriptorCreateWithNameAndSize (CFSTR("LastResort"), 0); + CFArrayRef cascade_list = CFArrayCreate (kCFAllocatorDefault, + (const void **) &last_resort, + 1, + &kCFTypeArrayCallBacks); + CFRelease (last_resort); + CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault, + (const void **) &kCTFontCascadeListAttribute, + (const void **) &cascade_list, + 1, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + CFRelease (cascade_list); + + CTFontDescriptorRef font_desc = CTFontDescriptorCreateWithAttributes (attributes); + CFRelease (attributes); + return font_desc; +} + +static void +release_data (void *info, const void *data, size_t size) +{ + assert (hb_blob_get_length ((hb_blob_t *) info) == size && + hb_blob_get_data ((hb_blob_t *) info, nullptr) == data); + + hb_blob_destroy ((hb_blob_t *) info); +} + +static CGFontRef +create_cg_font (hb_face_t *face) +{ + CGFontRef cg_font = nullptr; + if (face->destroy == _hb_cg_font_release) + { + cg_font = CGFontRetain ((CGFontRef) face->user_data); + } + else + { + hb_blob_t *blob = hb_face_reference_blob (face); + unsigned int blob_length; + const char *blob_data = hb_blob_get_data (blob, &blob_length); + if (unlikely (!blob_length)) + DEBUG_MSG (CORETEXT, face, "Face has empty blob"); + + CGDataProviderRef provider = CGDataProviderCreateWithData (blob, blob_data, blob_length, &release_data); + if (likely (provider)) + { + cg_font = CGFontCreateWithDataProvider (provider); + if (unlikely (!cg_font)) + DEBUG_MSG (CORETEXT, face, "Face CGFontCreateWithDataProvider() failed"); + CGDataProviderRelease (provider); + } + } + return cg_font; +} + +static CTFontRef +create_ct_font (CGFontRef cg_font, CGFloat font_size) +{ + CTFontRef ct_font = nullptr; + + /* CoreText does not enable trak table usage / tracking when creating a CTFont + * using CTFontCreateWithGraphicsFont. The only way of enabling tracking seems + * to be through the CTFontCreateUIFontForLanguage call. */ + CFStringRef cg_postscript_name = CGFontCopyPostScriptName (cg_font); + if (CFStringHasPrefix (cg_postscript_name, CFSTR (".SFNSText")) || + CFStringHasPrefix (cg_postscript_name, CFSTR (".SFNSDisplay"))) + { +#if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1080 +# define kCTFontUIFontSystem kCTFontSystemFontType +# define kCTFontUIFontEmphasizedSystem kCTFontEmphasizedSystemFontType +#endif + CTFontUIFontType font_type = kCTFontUIFontSystem; + if (CFStringHasSuffix (cg_postscript_name, CFSTR ("-Bold"))) + font_type = kCTFontUIFontEmphasizedSystem; + + ct_font = CTFontCreateUIFontForLanguage (font_type, font_size, nullptr); + CFStringRef ct_result_name = CTFontCopyPostScriptName(ct_font); + if (CFStringCompare (ct_result_name, cg_postscript_name, 0) != kCFCompareEqualTo) + { + CFRelease(ct_font); + ct_font = nullptr; + } + CFRelease (ct_result_name); + } + CFRelease (cg_postscript_name); + + if (!ct_font) + ct_font = CTFontCreateWithGraphicsFont (cg_font, font_size, nullptr, nullptr); + + if (unlikely (!ct_font)) { + DEBUG_MSG (CORETEXT, cg_font, "Font CTFontCreateWithGraphicsFont() failed"); + return nullptr; + } + + /* crbug.com/576941 and crbug.com/625902 and the investigation in the latter + * bug indicate that the cascade list reconfiguration occasionally causes + * crashes in CoreText on OS X 10.9, thus let's skip this step on older + * operating system versions. Except for the emoji font, where _not_ + * reconfiguring the cascade list causes CoreText crashes. For details, see + * crbug.com/549610 */ + // 0x00070000 stands for "kCTVersionNumber10_10", see CoreText.h +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" + if (&CTGetCoreTextVersion != nullptr && CTGetCoreTextVersion() < 0x00070000) { +#pragma GCC diagnostic pop + CFStringRef fontName = CTFontCopyPostScriptName (ct_font); + bool isEmojiFont = CFStringCompare (fontName, CFSTR("AppleColorEmoji"), 0) == kCFCompareEqualTo; + CFRelease (fontName); + if (!isEmojiFont) + return ct_font; + } + + CFURLRef original_url = nullptr; +#if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060 + ATSFontRef atsFont; + FSRef fsref; + OSStatus status; + atsFont = CTFontGetPlatformFont (ct_font, NULL); + status = ATSFontGetFileReference (atsFont, &fsref); + if (status == noErr) + original_url = CFURLCreateFromFSRef (NULL, &fsref); +#else + original_url = (CFURLRef) CTFontCopyAttribute (ct_font, kCTFontURLAttribute); +#endif + + /* Create font copy with cascade list that has LastResort first; this speeds up CoreText + * font fallback which we don't need anyway. */ + { + CTFontDescriptorRef last_resort_font_desc = get_last_resort_font_desc (); + CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (ct_font, 0.0, nullptr, last_resort_font_desc); + CFRelease (last_resort_font_desc); + if (new_ct_font) + { + /* The CTFontCreateCopyWithAttributes call fails to stay on the same font + * when reconfiguring the cascade list and may switch to a different font + * when there are fonts that go by the same name, since the descriptor is + * just name and size. + * + * Avoid reconfiguring the cascade lists if the new font is outside the + * system locations that we cannot access from the sandboxed renderer + * process in Blink. This can be detected by the new file URL location + * that the newly found font points to. */ + CFURLRef new_url = nullptr; +#if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060 + atsFont = CTFontGetPlatformFont (new_ct_font, NULL); + status = ATSFontGetFileReference (atsFont, &fsref); + if (status == noErr) + new_url = CFURLCreateFromFSRef (NULL, &fsref); +#else + new_url = (CFURLRef) CTFontCopyAttribute (new_ct_font, kCTFontURLAttribute); +#endif + // Keep reconfigured font if URL cannot be retrieved (seems to be the case + // on Mac OS 10.12 Sierra), speculative fix for crbug.com/625606 + if (!original_url || !new_url || CFEqual (original_url, new_url)) { + CFRelease (ct_font); + ct_font = new_ct_font; + } else { + CFRelease (new_ct_font); + DEBUG_MSG (CORETEXT, ct_font, "Discarding reconfigured CTFont, location changed."); + } + if (new_url) + CFRelease (new_url); + } + else + DEBUG_MSG (CORETEXT, ct_font, "Font copy with empty cascade list failed"); + } + + if (original_url) + CFRelease (original_url); + return ct_font; +} + +hb_coretext_face_data_t * +_hb_coretext_shaper_face_data_create (hb_face_t *face) +{ + CGFontRef cg_font = create_cg_font (face); + + if (unlikely (!cg_font)) + { + DEBUG_MSG (CORETEXT, face, "CGFont creation failed.."); + return nullptr; + } + + return (hb_coretext_face_data_t *) cg_font; +} + +void +_hb_coretext_shaper_face_data_destroy (hb_coretext_face_data_t *data) +{ + CFRelease ((CGFontRef) data); +} + +/** + * hb_coretext_face_create: + * @cg_font: The CGFontRef to work upon + * + * Creates an #hb_face_t face object from the specified + * CGFontRef. + * + * Return value: the new #hb_face_t face object + * + * Since: 0.9.10 + */ +hb_face_t * +hb_coretext_face_create (CGFontRef cg_font) +{ + return hb_face_create_for_tables (_hb_cg_reference_table, CGFontRetain (cg_font), _hb_cg_font_release); +} + +/** + * hb_coretext_face_get_cg_font: + * @face: The #hb_face_t to work upon + * + * Fetches the CGFontRef associated with an #hb_face_t + * face object + * + * Return value: the CGFontRef found + * + * Since: 0.9.10 + */ +CGFontRef +hb_coretext_face_get_cg_font (hb_face_t *face) +{ + return (CGFontRef) (const void *) face->data.coretext; +} + + +hb_coretext_font_data_t * +_hb_coretext_shaper_font_data_create (hb_font_t *font) +{ + hb_face_t *face = font->face; + const hb_coretext_face_data_t *face_data = face->data.coretext; + if (unlikely (!face_data)) return nullptr; + CGFontRef cg_font = (CGFontRef) (const void *) face->data.coretext; + + CGFloat font_size = (CGFloat) (font->ptem <= 0.f ? HB_CORETEXT_DEFAULT_FONT_SIZE : font->ptem); + CTFontRef ct_font = create_ct_font (cg_font, font_size); + + if (unlikely (!ct_font)) + { + DEBUG_MSG (CORETEXT, font, "CGFont creation failed.."); + return nullptr; + } + + if (font->num_coords) + { + CFMutableDictionaryRef variations = + CFDictionaryCreateMutable (kCFAllocatorDefault, + font->num_coords, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + + for (unsigned i = 0; i < font->num_coords; i++) + { + if (font->coords[i] == 0.) continue; + + hb_ot_var_axis_info_t info; + unsigned int c = 1; + hb_ot_var_get_axis_infos (font->face, i, &c, &info); + float v = hb_clamp (font->design_coords[i], info.min_value, info.max_value); + + CFNumberRef tag_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &info.tag); + CFNumberRef value_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberFloatType, &v); + CFDictionarySetValue (variations, tag_number, value_number); + CFRelease (tag_number); + CFRelease (value_number); + } + + CFDictionaryRef attributes = + CFDictionaryCreate (kCFAllocatorDefault, + (const void **) &kCTFontVariationAttribute, + (const void **) &variations, + 1, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + + CTFontDescriptorRef varDesc = CTFontDescriptorCreateWithAttributes (attributes); + CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (ct_font, 0, nullptr, varDesc); + + CFRelease (ct_font); + CFRelease (attributes); + CFRelease (variations); + ct_font = new_ct_font; + } + + return (hb_coretext_font_data_t *) ct_font; +} + +void +_hb_coretext_shaper_font_data_destroy (hb_coretext_font_data_t *data) +{ + CFRelease ((CTFontRef) data); +} + +/** + * hb_coretext_font_create: + * @ct_font: The CTFontRef to work upon + * + * Creates an #hb_font_t font object from the specified + * CTFontRef. + * + * Return value: the new #hb_font_t font object + * + * Since: 1.7.2 + **/ +hb_font_t * +hb_coretext_font_create (CTFontRef ct_font) +{ + CGFontRef cg_font = CTFontCopyGraphicsFont (ct_font, nullptr); + hb_face_t *face = hb_coretext_face_create (cg_font); + CFRelease (cg_font); + hb_font_t *font = hb_font_create (face); + hb_face_destroy (face); + + if (unlikely (hb_object_is_immutable (font))) + return font; + + hb_font_set_ptem (font, CTFontGetSize (ct_font)); + + /* Let there be dragons here... */ + font->data.coretext.cmpexch (nullptr, (hb_coretext_font_data_t *) CFRetain (ct_font)); + + return font; +} + +/** + * hb_coretext_font_get_ct_font: + * @font: #hb_font_t to work upon + * + * Fetches the CTFontRef associated with the specified + * #hb_font_t font object. + * + * Return value: the CTFontRef found + * + * Since: 0.9.10 + */ +CTFontRef +hb_coretext_font_get_ct_font (hb_font_t *font) +{ + CTFontRef ct_font = (CTFontRef) (const void *) font->data.coretext; + return ct_font ? (CTFontRef) ct_font : nullptr; +} + + +/* + * shaper + */ + +struct feature_record_t { + unsigned int feature; + unsigned int setting; +}; + +struct active_feature_t { + feature_record_t rec; + unsigned int order; + + HB_INTERNAL static int cmp (const void *pa, const void *pb) { + const active_feature_t *a = (const active_feature_t *) pa; + const active_feature_t *b = (const active_feature_t *) pb; + return a->rec.feature < b->rec.feature ? -1 : a->rec.feature > b->rec.feature ? 1 : + a->order < b->order ? -1 : a->order > b->order ? 1 : + a->rec.setting < b->rec.setting ? -1 : a->rec.setting > b->rec.setting ? 1 : + 0; + } + bool operator== (const active_feature_t& f) const { + return cmp (this, &f) == 0; + } +}; + +struct feature_event_t { + unsigned int index; + bool start; + active_feature_t feature; + + HB_INTERNAL static int cmp (const void *pa, const void *pb) { + const feature_event_t *a = (const feature_event_t *) pa; + const feature_event_t *b = (const feature_event_t *) pb; + return a->index < b->index ? -1 : a->index > b->index ? 1 : + a->start < b->start ? -1 : a->start > b->start ? 1 : + active_feature_t::cmp (&a->feature, &b->feature); + } +}; + +struct range_record_t { + CTFontRef font; + unsigned int index_first; /* == start */ + unsigned int index_last; /* == end - 1 */ +}; + + +hb_bool_t +_hb_coretext_shape (hb_shape_plan_t *shape_plan, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features, + unsigned int num_features) +{ + hb_face_t *face = font->face; + CGFontRef cg_font = (CGFontRef) (const void *) face->data.coretext; + CTFontRef ct_font = (CTFontRef) (const void *) font->data.coretext; + + CGFloat ct_font_size = CTFontGetSize (ct_font); + CGFloat x_mult = (CGFloat) font->x_scale / ct_font_size; + CGFloat y_mult = (CGFloat) font->y_scale / ct_font_size; + + /* Attach marks to their bases, to match the 'ot' shaper. + * Adapted from a very old version of hb-ot-shape:hb_form_clusters(). + * Note that this only makes us be closer to the 'ot' shaper, + * but by no means the same. For example, if there's + * B1 M1 B2 M2, and B1-B2 form a ligature, M2's cluster will + * continue pointing to B2 even though B2 was merged into B1's + * cluster... */ + if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES) + { + hb_unicode_funcs_t *unicode = buffer->unicode; + unsigned int count = buffer->len; + hb_glyph_info_t *info = buffer->info; + for (unsigned int i = 1; i < count; i++) + if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (unicode->general_category (info[i].codepoint))) + buffer->merge_clusters (i - 1, i + 1); + } + + hb_vector_t range_records; + + /* + * Set up features. + * (copied + modified from code from hb-uniscribe.cc) + */ + if (num_features) + { + /* Sort features by start/end events. */ + hb_vector_t feature_events; + for (unsigned int i = 0; i < num_features; i++) + { + active_feature_t feature; + +#if MAC_OS_X_VERSION_MIN_REQUIRED < 101000 + const hb_aat_feature_mapping_t * mapping = hb_aat_layout_find_feature_mapping (features[i].tag); + if (!mapping) + continue; + + feature.rec.feature = mapping->aatFeatureType; + feature.rec.setting = features[i].value ? mapping->selectorToEnable : mapping->selectorToDisable; +#else + feature.rec.feature = features[i].tag; + feature.rec.setting = features[i].value; +#endif + feature.order = i; + + feature_event_t *event; + + event = feature_events.push (); + event->index = features[i].start; + event->start = true; + event->feature = feature; + + event = feature_events.push (); + event->index = features[i].end; + event->start = false; + event->feature = feature; + } + feature_events.qsort (); + /* Add a strategic final event. */ + { + active_feature_t feature; + feature.rec.feature = HB_TAG_NONE; + feature.rec.setting = 0; + feature.order = num_features + 1; + + feature_event_t *event = feature_events.push (); + event->index = 0; /* This value does magic. */ + event->start = false; + event->feature = feature; + } + + /* Scan events and save features for each range. */ + hb_vector_t active_features; + unsigned int last_index = 0; + for (unsigned int i = 0; i < feature_events.length; i++) + { + feature_event_t *event = &feature_events[i]; + + if (event->index != last_index) + { + /* Save a snapshot of active features and the range. */ + range_record_t *range = range_records.push (); + + if (active_features.length) + { + CFMutableArrayRef features_array = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks); + + /* TODO sort and resolve conflicting features? */ + /* active_features.qsort (); */ + for (unsigned int j = 0; j < active_features.length; j++) + { +#if MAC_OS_X_VERSION_MIN_REQUIRED < 101000 + CFStringRef keys[] = { + kCTFontFeatureTypeIdentifierKey, + kCTFontFeatureSelectorIdentifierKey + }; + CFNumberRef values[] = { + CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.feature), + CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.setting) + }; +#else + char tag[5] = {HB_UNTAG (active_features[j].rec.feature)}; + CFTypeRef keys[] = { + kCTFontOpenTypeFeatureTag, + kCTFontOpenTypeFeatureValue + }; + CFTypeRef values[] = { + CFStringCreateWithCString (kCFAllocatorDefault, tag, kCFStringEncodingASCII), + CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.setting) + }; +#endif + static_assert ((ARRAY_LENGTH_CONST (keys) == ARRAY_LENGTH_CONST (values)), ""); + CFDictionaryRef dict = CFDictionaryCreate (kCFAllocatorDefault, + (const void **) keys, + (const void **) values, + ARRAY_LENGTH (keys), + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + for (unsigned int i = 0; i < ARRAY_LENGTH (values); i++) + CFRelease (values[i]); + + CFArrayAppendValue (features_array, dict); + CFRelease (dict); + + } + + CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault, + (const void **) &kCTFontFeatureSettingsAttribute, + (const void **) &features_array, + 1, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + CFRelease (features_array); + + CTFontDescriptorRef font_desc = CTFontDescriptorCreateWithAttributes (attributes); + CFRelease (attributes); + + range->font = CTFontCreateCopyWithAttributes (ct_font, 0.0, nullptr, font_desc); + CFRelease (font_desc); + } + else + { + range->font = nullptr; + } + + range->index_first = last_index; + range->index_last = event->index - 1; + + last_index = event->index; + } + + if (event->start) + { + active_features.push (event->feature); + } else { + active_feature_t *feature = active_features.lsearch (event->feature); + if (feature) + active_features.remove_ordered (feature - active_features.arrayZ); + } + } + } + + unsigned int scratch_size; + hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size); + +#define ALLOCATE_ARRAY(Type, name, len, on_no_room) \ + Type *name = (Type *) scratch; \ + do { \ + unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \ + if (unlikely (_consumed > scratch_size)) \ + { \ + on_no_room; \ + assert (0); \ + } \ + scratch += _consumed; \ + scratch_size -= _consumed; \ + } while (0) + + ALLOCATE_ARRAY (UniChar, pchars, buffer->len * 2, ((void)nullptr) /*nothing*/); + unsigned int chars_len = 0; + for (unsigned int i = 0; i < buffer->len; i++) { + hb_codepoint_t c = buffer->info[i].codepoint; + if (likely (c <= 0xFFFFu)) + pchars[chars_len++] = c; + else if (unlikely (c > 0x10FFFFu)) + pchars[chars_len++] = 0xFFFDu; + else { + pchars[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10); + pchars[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1u << 10) - 1)); + } + } + + ALLOCATE_ARRAY (unsigned int, log_clusters, chars_len, ((void)nullptr) /*nothing*/); + chars_len = 0; + for (unsigned int i = 0; i < buffer->len; i++) + { + hb_codepoint_t c = buffer->info[i].codepoint; + unsigned int cluster = buffer->info[i].cluster; + log_clusters[chars_len++] = cluster; + if (hb_in_range (c, 0x10000u, 0x10FFFFu)) + log_clusters[chars_len++] = cluster; /* Surrogates. */ + } + +#define FAIL(...) \ + HB_STMT_START { \ + DEBUG_MSG (CORETEXT, nullptr, __VA_ARGS__); \ + ret = false; \ + goto fail; \ + } HB_STMT_END + + bool ret = true; + CFStringRef string_ref = nullptr; + CTLineRef line = nullptr; + + if (false) + { +resize_and_retry: + DEBUG_MSG (CORETEXT, buffer, "Buffer resize"); + /* string_ref uses the scratch-buffer for backing store, and line references + * string_ref (via attr_string). We must release those before resizing buffer. */ + assert (string_ref); + assert (line); + CFRelease (string_ref); + CFRelease (line); + string_ref = nullptr; + line = nullptr; + + /* Get previous start-of-scratch-area, that we use later for readjusting + * our existing scratch arrays. */ + unsigned int old_scratch_used; + hb_buffer_t::scratch_buffer_t *old_scratch; + old_scratch = buffer->get_scratch_buffer (&old_scratch_used); + old_scratch_used = scratch - old_scratch; + + if (unlikely (!buffer->ensure (buffer->allocated * 2))) + FAIL ("Buffer resize failed"); + + /* Adjust scratch, pchars, and log_cluster arrays. This is ugly, but really the + * cleanest way to do without completely restructuring the rest of this shaper. */ + scratch = buffer->get_scratch_buffer (&scratch_size); + pchars = reinterpret_cast (((char *) scratch + ((char *) pchars - (char *) old_scratch))); + log_clusters = reinterpret_cast (((char *) scratch + ((char *) log_clusters - (char *) old_scratch))); + scratch += old_scratch_used; + scratch_size -= old_scratch_used; + } + { + string_ref = CFStringCreateWithCharactersNoCopy (nullptr, + pchars, chars_len, + kCFAllocatorNull); + if (unlikely (!string_ref)) + FAIL ("CFStringCreateWithCharactersNoCopy failed"); + + /* Create an attributed string, populate it, and create a line from it, then release attributed string. */ + { + CFMutableAttributedStringRef attr_string = CFAttributedStringCreateMutable (kCFAllocatorDefault, + chars_len); + if (unlikely (!attr_string)) + FAIL ("CFAttributedStringCreateMutable failed"); + CFAttributedStringReplaceString (attr_string, CFRangeMake (0, 0), string_ref); + if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction)) + { + CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len), + kCTVerticalFormsAttributeName, kCFBooleanTrue); + } + + if (buffer->props.language) + { +/* What's the iOS equivalent of this check? + * The symbols was introduced in iOS 7.0. + * At any rate, our fallback is safe and works fine. */ +#if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1090 +# define kCTLanguageAttributeName CFSTR ("NSLanguage") +#endif + CFStringRef lang = CFStringCreateWithCStringNoCopy (kCFAllocatorDefault, + hb_language_to_string (buffer->props.language), + kCFStringEncodingUTF8, + kCFAllocatorNull); + if (unlikely (!lang)) + { + CFRelease (attr_string); + FAIL ("CFStringCreateWithCStringNoCopy failed"); + } + CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len), + kCTLanguageAttributeName, lang); + CFRelease (lang); + } + CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len), + kCTFontAttributeName, ct_font); + + if (num_features && range_records.length) + { + unsigned int start = 0; + range_record_t *last_range = &range_records[0]; + for (unsigned int k = 0; k < chars_len; k++) + { + range_record_t *range = last_range; + while (log_clusters[k] < range->index_first) + range--; + while (log_clusters[k] > range->index_last) + range++; + if (range != last_range) + { + if (last_range->font) + CFAttributedStringSetAttribute (attr_string, CFRangeMake (start, k - start), + kCTFontAttributeName, last_range->font); + + start = k; + } + + last_range = range; + } + if (start != chars_len && last_range->font) + CFAttributedStringSetAttribute (attr_string, CFRangeMake (start, chars_len - start), + kCTFontAttributeName, last_range->font); + } + /* Enable/disable kern if requested. + * + * Note: once kern is disabled, reenabling it doesn't currently seem to work in CoreText. + */ + if (num_features) + { + unsigned int zeroint = 0; + CFNumberRef zero = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &zeroint); + for (unsigned int i = 0; i < num_features; i++) + { + const hb_feature_t &feature = features[i]; + if (feature.tag == HB_TAG('k','e','r','n') && + feature.start < chars_len && feature.start < feature.end) + { + CFRange feature_range = CFRangeMake (feature.start, + hb_min (feature.end, chars_len) - feature.start); + if (feature.value) + CFAttributedStringRemoveAttribute (attr_string, feature_range, kCTKernAttributeName); + else + CFAttributedStringSetAttribute (attr_string, feature_range, kCTKernAttributeName, zero); + } + } + CFRelease (zero); + } + + int level = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1; + CFNumberRef level_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &level); +#if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060 + extern const CFStringRef kCTTypesetterOptionForcedEmbeddingLevel; +#endif + CFDictionaryRef options = CFDictionaryCreate (kCFAllocatorDefault, + (const void **) &kCTTypesetterOptionForcedEmbeddingLevel, + (const void **) &level_number, + 1, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + CFRelease (level_number); + if (unlikely (!options)) + { + CFRelease (attr_string); + FAIL ("CFDictionaryCreate failed"); + } + + CTTypesetterRef typesetter = CTTypesetterCreateWithAttributedStringAndOptions (attr_string, options); + CFRelease (options); + CFRelease (attr_string); + if (unlikely (!typesetter)) + FAIL ("CTTypesetterCreateWithAttributedStringAndOptions failed"); + + line = CTTypesetterCreateLine (typesetter, CFRangeMake(0, 0)); + CFRelease (typesetter); + if (unlikely (!line)) + FAIL ("CTTypesetterCreateLine failed"); + } + + CFArrayRef glyph_runs = CTLineGetGlyphRuns (line); + unsigned int num_runs = CFArrayGetCount (glyph_runs); + DEBUG_MSG (CORETEXT, nullptr, "Num runs: %d", num_runs); + + buffer->len = 0; + uint32_t status_or = 0; + CGFloat advances_so_far = 0; + /* For right-to-left runs, CoreText returns the glyphs positioned such that + * any trailing whitespace is to the left of (0,0). Adjust coordinate system + * to fix for that. Test with any RTL string with trailing spaces. + * https://crbug.com/469028 + */ + if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) + { + advances_so_far -= CTLineGetTrailingWhitespaceWidth (line); + if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction)) + advances_so_far = -advances_so_far; + } + + const CFRange range_all = CFRangeMake (0, 0); + + for (unsigned int i = 0; i < num_runs; i++) + { + CTRunRef run = static_cast(CFArrayGetValueAtIndex (glyph_runs, i)); + CTRunStatus run_status = CTRunGetStatus (run); + status_or |= run_status; + DEBUG_MSG (CORETEXT, run, "CTRunStatus: %x", run_status); + CGFloat run_advance = CTRunGetTypographicBounds (run, range_all, nullptr, nullptr, nullptr); + if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction)) + run_advance = -run_advance; + DEBUG_MSG (CORETEXT, run, "Run advance: %g", (double) run_advance); + + /* CoreText does automatic font fallback (AKA "cascading") for characters + * not supported by the requested font, and provides no way to turn it off, + * so we must detect if the returned run uses a font other than the requested + * one and fill in the buffer with .notdef glyphs instead of random glyph + * indices from a different font. + */ + CFDictionaryRef attributes = CTRunGetAttributes (run); + CTFontRef run_ct_font = static_cast(CFDictionaryGetValue (attributes, kCTFontAttributeName)); + if (!CFEqual (run_ct_font, ct_font)) + { + /* The run doesn't use our main font instance. We have to figure out + * whether font fallback happened, or this is just CoreText giving us + * another CTFont using the same underlying CGFont. CoreText seems + * to do that in a variety of situations, one of which being vertical + * text, but also perhaps for caching reasons. + * + * First, see if it uses any of our subfonts created to set font features... + * + * Next, compare the CGFont to the one we used to create our fonts. + * Even this doesn't work all the time. + * + * Finally, we compare PS names, which I don't think are unique... + * + * Looks like if we really want to be sure here we have to modify the + * font to change the name table, similar to what we do in the uniscribe + * backend. + * + * However, even that wouldn't work if we were passed in the CGFont to + * construct a hb_face to begin with. + * + * See: https://github.com/harfbuzz/harfbuzz/pull/36 + * + * Also see: https://bugs.chromium.org/p/chromium/issues/detail?id=597098 + */ + bool matched = false; + for (unsigned int i = 0; i < range_records.length; i++) + if (range_records[i].font && CFEqual (run_ct_font, range_records[i].font)) + { + matched = true; + break; + } + if (!matched) + { + CGFontRef run_cg_font = CTFontCopyGraphicsFont (run_ct_font, nullptr); + if (run_cg_font) + { + matched = CFEqual (run_cg_font, cg_font); + CFRelease (run_cg_font); + } + } + if (!matched) + { + CFStringRef font_ps_name = CTFontCopyName (ct_font, kCTFontPostScriptNameKey); + CFStringRef run_ps_name = CTFontCopyName (run_ct_font, kCTFontPostScriptNameKey); + CFComparisonResult result = CFStringCompare (run_ps_name, font_ps_name, 0); + CFRelease (run_ps_name); + CFRelease (font_ps_name); + if (result == kCFCompareEqualTo) + matched = true; + } + if (!matched) + { + CFRange range = CTRunGetStringRange (run); + DEBUG_MSG (CORETEXT, run, "Run used fallback font: %ld..%ld", + range.location, range.location + range.length); + if (!buffer->ensure_inplace (buffer->len + range.length)) + goto resize_and_retry; + hb_glyph_info_t *info = buffer->info + buffer->len; + + hb_codepoint_t notdef = 0; + hb_direction_t dir = buffer->props.direction; + hb_position_t x_advance, y_advance, x_offset, y_offset; + hb_font_get_glyph_advance_for_direction (font, notdef, dir, &x_advance, &y_advance); + hb_font_get_glyph_origin_for_direction (font, notdef, dir, &x_offset, &y_offset); + hb_position_t advance = x_advance + y_advance; + x_offset = -x_offset; + y_offset = -y_offset; + + unsigned int old_len = buffer->len; + for (CFIndex j = range.location; j < range.location + range.length; j++) + { + UniChar ch = CFStringGetCharacterAtIndex (string_ref, j); + if (hb_in_range (ch, 0xDC00u, 0xDFFFu) && range.location < j) + { + ch = CFStringGetCharacterAtIndex (string_ref, j - 1); + if (hb_in_range (ch, 0xD800u, 0xDBFFu)) + /* This is the second of a surrogate pair. Don't need .notdef + * for this one. */ + continue; + } + if (buffer->unicode->is_default_ignorable (ch)) + continue; + + info->codepoint = notdef; + info->cluster = log_clusters[j]; + + info->mask = advance; + info->var1.i32 = x_offset; + info->var2.i32 = y_offset; + + info++; + buffer->len++; + } + if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) + buffer->reverse_range (old_len, buffer->len); + advances_so_far += run_advance; + continue; + } + } + + unsigned int num_glyphs = CTRunGetGlyphCount (run); + if (num_glyphs == 0) + continue; + + if (!buffer->ensure_inplace (buffer->len + num_glyphs)) + goto resize_and_retry; + + hb_glyph_info_t *run_info = buffer->info + buffer->len; + + /* Testing used to indicate that CTRunGetGlyphsPtr, etc (almost?) always + * succeed, and so copying data to our own buffer will be rare. Reports + * have it that this changed in OS X 10.10 Yosemite, and nullptr is returned + * frequently. At any rate, we can test that codepath by setting USE_PTR + * to false. */ + +#define USE_PTR true + +#define SCRATCH_SAVE() \ + unsigned int scratch_size_saved = scratch_size; \ + hb_buffer_t::scratch_buffer_t *scratch_saved = scratch + +#define SCRATCH_RESTORE() \ + scratch_size = scratch_size_saved; \ + scratch = scratch_saved + + { /* Setup glyphs */ + SCRATCH_SAVE(); + const CGGlyph* glyphs = USE_PTR ? CTRunGetGlyphsPtr (run) : nullptr; + if (!glyphs) { + ALLOCATE_ARRAY (CGGlyph, glyph_buf, num_glyphs, goto resize_and_retry); + CTRunGetGlyphs (run, range_all, glyph_buf); + glyphs = glyph_buf; + } + const CFIndex* string_indices = USE_PTR ? CTRunGetStringIndicesPtr (run) : nullptr; + if (!string_indices) { + ALLOCATE_ARRAY (CFIndex, index_buf, num_glyphs, goto resize_and_retry); + CTRunGetStringIndices (run, range_all, index_buf); + string_indices = index_buf; + } + hb_glyph_info_t *info = run_info; + for (unsigned int j = 0; j < num_glyphs; j++) + { + info->codepoint = glyphs[j]; + info->cluster = log_clusters[string_indices[j]]; + info++; + } + SCRATCH_RESTORE(); + } + { + /* Setup positions. + * Note that CoreText does not return advances for glyphs. As such, + * for all but last glyph, we use the delta position to next glyph as + * advance (in the advance direction only), and for last glyph we set + * whatever is needed to make the whole run's advance add up. */ + SCRATCH_SAVE(); + const CGPoint* positions = USE_PTR ? CTRunGetPositionsPtr (run) : nullptr; + if (!positions) { + ALLOCATE_ARRAY (CGPoint, position_buf, num_glyphs, goto resize_and_retry); + CTRunGetPositions (run, range_all, position_buf); + positions = position_buf; + } + hb_glyph_info_t *info = run_info; + if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction)) + { + hb_position_t x_offset = round ((positions[0].x - advances_so_far) * x_mult); + for (unsigned int j = 0; j < num_glyphs; j++) + { + CGFloat advance; + if (likely (j + 1 < num_glyphs)) + advance = positions[j + 1].x - positions[j].x; + else /* last glyph */ + advance = run_advance - (positions[j].x - positions[0].x); + /* int cast necessary to pass through negative values. */ + info->mask = (int) round (advance * x_mult); + info->var1.i32 = x_offset; + info->var2.i32 = round (positions[j].y * y_mult); + info++; + } + } + else + { + hb_position_t y_offset = round ((positions[0].y - advances_so_far) * y_mult); + for (unsigned int j = 0; j < num_glyphs; j++) + { + CGFloat advance; + if (likely (j + 1 < num_glyphs)) + advance = positions[j + 1].y - positions[j].y; + else /* last glyph */ + advance = run_advance - (positions[j].y - positions[0].y); + /* int cast necessary to pass through negative values. */ + info->mask = (int) round (advance * y_mult); + info->var1.i32 = round (positions[j].x * x_mult); + info->var2.i32 = y_offset; + info++; + } + } + SCRATCH_RESTORE(); + advances_so_far += run_advance; + } +#undef SCRATCH_RESTORE +#undef SCRATCH_SAVE +#undef USE_PTR +#undef ALLOCATE_ARRAY + + buffer->len += num_glyphs; + } + + buffer->clear_positions (); + + unsigned int count = buffer->len; + hb_glyph_info_t *info = buffer->info; + hb_glyph_position_t *pos = buffer->pos; + if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction)) + for (unsigned int i = 0; i < count; i++) + { + pos->x_advance = info->mask; + pos->x_offset = info->var1.i32; + pos->y_offset = info->var2.i32; + + info++; pos++; + } + else + for (unsigned int i = 0; i < count; i++) + { + pos->y_advance = info->mask; + pos->x_offset = info->var1.i32; + pos->y_offset = info->var2.i32; + + info++; pos++; + } + + /* Fix up clusters so that we never return out-of-order indices; + * if core text has reordered glyphs, we'll merge them to the + * beginning of the reordered cluster. CoreText is nice enough + * to tell us whenever it has produced nonmonotonic results... + * Note that we assume the input clusters were nonmonotonic to + * begin with. + * + * This does *not* mean we'll form the same clusters as Uniscribe + * or the native OT backend, only that the cluster indices will be + * monotonic in the output buffer. */ + if (count > 1 && (status_or & kCTRunStatusNonMonotonic) && + buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_CHARACTERS) + { + hb_glyph_info_t *info = buffer->info; + if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) + { + unsigned int cluster = info[count - 1].cluster; + for (unsigned int i = count - 1; i > 0; i--) + { + cluster = hb_min (cluster, info[i - 1].cluster); + info[i - 1].cluster = cluster; + } + } + else + { + unsigned int cluster = info[0].cluster; + for (unsigned int i = 1; i < count; i++) + { + cluster = hb_min (cluster, info[i].cluster); + info[i].cluster = cluster; + } + } + } + } + + /* TODO: Sometimes the above positioning code generates negative + * advance values. Fix them up. Example, with NotoNastaliqUrdu + * font and sequence ابهد. */ + + buffer->clear_glyph_flags (); + buffer->unsafe_to_break (); + +#undef FAIL + +fail: + if (string_ref) + CFRelease (string_ref); + if (line) + CFRelease (line); + + for (unsigned int i = 0; i < range_records.length; i++) + if (range_records[i].font) + CFRelease (range_records[i].font); + + return ret; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-coretext.h b/gfx/harfbuzz/src/hb-coretext.h new file mode 100644 index 0000000000..e53dbaf2c7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-coretext.h @@ -0,0 +1,96 @@ +/* + * Copyright © 2012 Mozilla Foundation. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Mozilla Author(s): Jonathan Kew + */ + +#ifndef HB_CORETEXT_H +#define HB_CORETEXT_H + +#include "hb.h" + +#include +#if TARGET_OS_IPHONE +# include +# include +#else +# include +#endif + +HB_BEGIN_DECLS + + +/** + * HB_CORETEXT_TAG_MORT: + * + * The #hb_tag_t tag for the `mort` (glyph metamorphosis) table, + * which holds AAT features. + * + * For more information, see + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6mort.html + * + **/ +#define HB_CORETEXT_TAG_MORT HB_TAG('m','o','r','t') + +/** + * HB_CORETEXT_TAG_MORX: + * + * The #hb_tag_t tag for the `morx` (extended glyph metamorphosis) + * table, which holds AAT features. + * + * For more information, see + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6morx.html + * + **/ +#define HB_CORETEXT_TAG_MORX HB_TAG('m','o','r','x') + +/** + * HB_CORETEXT_TAG_KERX: + * + * The #hb_tag_t tag for the `kerx` (extended kerning) table, which + * holds AAT kerning information. + * + * For more information, see + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6kerx.html + * + **/ +#define HB_CORETEXT_TAG_KERX HB_TAG('k','e','r','x') + + +HB_EXTERN hb_face_t * +hb_coretext_face_create (CGFontRef cg_font); + +HB_EXTERN hb_font_t * +hb_coretext_font_create (CTFontRef ct_font); + + +HB_EXTERN CGFontRef +hb_coretext_face_get_cg_font (hb_face_t *face); + +HB_EXTERN CTFontRef +hb_coretext_font_get_ct_font (hb_font_t *font); + + +HB_END_DECLS + +#endif /* HB_CORETEXT_H */ diff --git a/gfx/harfbuzz/src/hb-cplusplus.hh b/gfx/harfbuzz/src/hb-cplusplus.hh new file mode 100644 index 0000000000..531ef1b7c8 --- /dev/null +++ b/gfx/harfbuzz/src/hb-cplusplus.hh @@ -0,0 +1,223 @@ +/* + * Copyright © 2022 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_CPLUSPLUS_HH +#define HB_CPLUSPLUS_HH + +#include "hb.h" + +HB_BEGIN_DECLS +HB_END_DECLS + +#ifdef __cplusplus + +#include +#include + +#if 0 +#if !(__cplusplus >= 201103L) +#error "HarfBuzz C++ helpers require C++11" +#endif +#endif + +namespace hb { + + +template +struct vtable; + +template +struct shared_ptr +{ + using element_type = T; + + using v = vtable; + + explicit shared_ptr (T *p = nullptr) : p (p) {} + shared_ptr (const shared_ptr &o) : p (v::reference (o.p)) {} + shared_ptr (shared_ptr &&o) : p (o.p) { o.p = nullptr; } + shared_ptr& operator = (const shared_ptr &o) { if (p != o.p) { destroy (); p = o.p; reference (); } return *this; } + shared_ptr& operator = (shared_ptr &&o) { v::destroy (p); p = o.p; o.p = nullptr; return *this; } + ~shared_ptr () { v::destroy (p); p = nullptr; } + + T* get() const { return p; } + + void swap (shared_ptr &o) { std::swap (p, o.p); } + friend void swap (shared_ptr &a, shared_ptr &b) { std::swap (a.p, b.p); } + + operator T * () const { return p; } + T& operator * () const { return *get (); } + T* operator -> () const { return get (); } + operator bool () const { return p; } + bool operator == (const shared_ptr &o) const { return p == o.p; } + bool operator != (const shared_ptr &o) const { return p != o.p; } + + static T* get_empty() { return v::get_empty (); } + T* reference() { return v::reference (p); } + void destroy() { v::destroy (p); } + void set_user_data (hb_user_data_key_t *key, + void *value, + hb_destroy_func_t destroy, + hb_bool_t replace) { v::set_user_data (p, key, value, destroy, replace); } + void * get_user_data (hb_user_data_key_t *key) { return v::get_user_data (p, key); } + + private: + T *p; +}; + +template struct is_shared_ptr : std::false_type {}; +template struct is_shared_ptr> : std::true_type {}; + +template +struct unique_ptr +{ + using element_type = T; + + using v = vtable; + + explicit unique_ptr (T *p = nullptr) : p (p) {} + unique_ptr (const unique_ptr &o) = delete; + unique_ptr (unique_ptr &&o) : p (o.p) { o.p = nullptr; } + unique_ptr& operator = (const unique_ptr &o) = delete; + unique_ptr& operator = (unique_ptr &&o) { v::destroy (p); p = o.p; o.p = nullptr; return *this; } + ~unique_ptr () { v::destroy (p); p = nullptr; } + + T* get() const { return p; } + T* release () { T* v = p; p = nullptr; return v; } + + void swap (unique_ptr &o) { std::swap (p, o.p); } + friend void swap (unique_ptr &a, unique_ptr &b) { std::swap (a.p, b.p); } + + operator T * () const { return p; } + T& operator * () const { return *get (); } + T* operator -> () const { return get (); } + operator bool () { return p; } + + private: + T *p; +}; + +template struct is_unique_ptr : std::false_type {}; +template struct is_unique_ptr> : std::true_type {}; + +template +struct vtable_t +{ + static constexpr auto get_empty = _get_empty; + static constexpr auto reference = _reference; + static constexpr auto destroy = _destroy; + static constexpr auto set_user_data = _set_user_data; + static constexpr auto get_user_data = _get_user_data; +}; + +#define HB_DEFINE_VTABLE(name) \ + template<> \ + struct vtable \ + : vtable_t {} + +HB_DEFINE_VTABLE (buffer); +HB_DEFINE_VTABLE (blob); +HB_DEFINE_VTABLE (face); +HB_DEFINE_VTABLE (font); +HB_DEFINE_VTABLE (font_funcs); +HB_DEFINE_VTABLE (map); +HB_DEFINE_VTABLE (set); +HB_DEFINE_VTABLE (shape_plan); +HB_DEFINE_VTABLE (unicode_funcs); +HB_DEFINE_VTABLE (draw_funcs); +HB_DEFINE_VTABLE (paint_funcs); + +#undef HB_DEFINE_VTABLE + + +#ifdef HB_SUBSET_H + +#define HB_DEFINE_VTABLE(name) \ + template<> \ + struct vtable \ + : vtable_t {} + + +HB_DEFINE_VTABLE (subset_input); +HB_DEFINE_VTABLE (subset_plan); + +#undef HB_DEFINE_VTABLE + +#endif + + +} // namespace hb + +/* Workaround for GCC < 7, see: + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480 + * https://stackoverflow.com/a/25594741 */ +namespace std { + + +template +struct hash> +{ + std::size_t operator()(const hb::shared_ptr& v) const noexcept + { + std::size_t h = std::hash{}(v.get ()); + return h; + } +}; + +template +struct hash> +{ + std::size_t operator()(const hb::unique_ptr& v) const noexcept + { + std::size_t h = std::hash{}(v.get ()); + return h; + } +}; + + +} // namespace std + +#endif /* __cplusplus */ + +#endif /* HB_CPLUSPLUS_HH */ diff --git a/gfx/harfbuzz/src/hb-debug.hh b/gfx/harfbuzz/src/hb-debug.hh new file mode 100644 index 0000000000..0ac4515fa8 --- /dev/null +++ b/gfx/harfbuzz/src/hb-debug.hh @@ -0,0 +1,472 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_DEBUG_HH +#define HB_DEBUG_HH + +#include "hb.hh" +#include "hb-atomic.hh" +#include "hb-algs.hh" + + +#ifndef HB_DEBUG +#define HB_DEBUG 0 +#endif + + +/* + * Global runtime options. + */ + +struct hb_options_t +{ + bool unused : 1; /* In-case sign bit is here. */ + bool initialized : 1; + bool uniscribe_bug_compatible : 1; +}; + +union hb_options_union_t { + int i; + hb_options_t opts; +}; +static_assert ((sizeof (hb_atomic_int_t) >= sizeof (hb_options_union_t)), ""); + +HB_INTERNAL void +_hb_options_init (); + +extern HB_INTERNAL hb_atomic_int_t _hb_options; + +static inline hb_options_t +hb_options () +{ +#ifdef HB_NO_GETENV + return hb_options_t (); +#endif + /* Make a local copy, so we can access bitfield threadsafely. */ + hb_options_union_t u; + u.i = _hb_options; + + if (unlikely (!u.i)) + { + _hb_options_init (); + u.i = _hb_options; + } + + return u.opts; +} + + +/* + * Debug output (needs enabling at compile time.) + */ + +static inline bool +_hb_debug (unsigned int level, + unsigned int max_level) +{ + return level < max_level; +} + +#define DEBUG_LEVEL_ENABLED(WHAT, LEVEL) (_hb_debug ((LEVEL), HB_DEBUG_##WHAT)) +#define DEBUG_ENABLED(WHAT) (DEBUG_LEVEL_ENABLED (WHAT, 0)) + +static inline void +_hb_print_func (const char *func) +{ + if (func) + { + unsigned int func_len = strlen (func); + /* Skip "static" */ + if (0 == strncmp (func, "static ", 7)) + func += 7; + /* Skip "typename" */ + if (0 == strncmp (func, "typename ", 9)) + func += 9; + /* Skip return type */ + const char *space = strchr (func, ' '); + if (space) + func = space + 1; + /* Skip parameter list */ + const char *paren = strchr (func, '('); + if (paren) + func_len = paren - func; + fprintf (stderr, "%.*s", (int) func_len, func); + } +} + +template static inline void +_hb_debug_msg_va (const char *what, + const void *obj, + const char *func, + bool indented, + unsigned int level, + int level_dir, + const char *message, + va_list ap) HB_PRINTF_FUNC(7, 0); +template static inline void +_hb_debug_msg_va (const char *what, + const void *obj, + const char *func, + bool indented, + unsigned int level, + int level_dir, + const char *message, + va_list ap) +{ + if (!_hb_debug (level, max_level)) + return; + + fprintf (stderr, "%-10s", what ? what : ""); + + if (obj) + fprintf (stderr, "(%*p) ", (int) (2 * sizeof (void *)), obj); + else + fprintf (stderr, " %*s ", (int) (2 * sizeof (void *)), ""); + + if (indented) { +#define VBAR "\342\224\202" /* U+2502 BOX DRAWINGS LIGHT VERTICAL */ +#define VRBAR "\342\224\234" /* U+251C BOX DRAWINGS LIGHT VERTICAL AND RIGHT */ +#define DLBAR "\342\225\256" /* U+256E BOX DRAWINGS LIGHT ARC DOWN AND LEFT */ +#define ULBAR "\342\225\257" /* U+256F BOX DRAWINGS LIGHT ARC UP AND LEFT */ +#define LBAR "\342\225\264" /* U+2574 BOX DRAWINGS LIGHT LEFT */ + static const char bars[] = + VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR + VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR + VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR + VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR + VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR VBAR; + fprintf (stderr, "%2u %s" VRBAR "%s", + level, + bars + sizeof (bars) - 1 - hb_min ((unsigned int) sizeof (bars) - 1, (unsigned int) (sizeof (VBAR) - 1) * level), + level_dir ? (level_dir > 0 ? DLBAR : ULBAR) : LBAR); + } else + fprintf (stderr, " " VRBAR LBAR); + + _hb_print_func (func); + + if (message) + { + fprintf (stderr, ": "); + vfprintf (stderr, message, ap); + } + + fprintf (stderr, "\n"); +} +template <> inline void HB_PRINTF_FUNC(7, 0) +_hb_debug_msg_va<0> (const char *what HB_UNUSED, + const void *obj HB_UNUSED, + const char *func HB_UNUSED, + bool indented HB_UNUSED, + unsigned int level HB_UNUSED, + int level_dir HB_UNUSED, + const char *message HB_UNUSED, + va_list ap HB_UNUSED) {} + +template static inline void +_hb_debug_msg (const char *what, + const void *obj, + const char *func, + bool indented, + unsigned int level, + int level_dir, + const char *message, + ...) HB_PRINTF_FUNC(7, 8); +template static inline void HB_PRINTF_FUNC(7, 8) +_hb_debug_msg (const char *what, + const void *obj, + const char *func, + bool indented, + unsigned int level, + int level_dir, + const char *message, + ...) +{ + va_list ap; + va_start (ap, message); + _hb_debug_msg_va (what, obj, func, indented, level, level_dir, message, ap); + va_end (ap); +} +template <> inline void +_hb_debug_msg<0> (const char *what HB_UNUSED, + const void *obj HB_UNUSED, + const char *func HB_UNUSED, + bool indented HB_UNUSED, + unsigned int level HB_UNUSED, + int level_dir HB_UNUSED, + const char *message HB_UNUSED, + ...) HB_PRINTF_FUNC(7, 8); +template <> inline void HB_PRINTF_FUNC(7, 8) +_hb_debug_msg<0> (const char *what HB_UNUSED, + const void *obj HB_UNUSED, + const char *func HB_UNUSED, + bool indented HB_UNUSED, + unsigned int level HB_UNUSED, + int level_dir HB_UNUSED, + const char *message HB_UNUSED, + ...) {} + +#define DEBUG_MSG_LEVEL(WHAT, OBJ, LEVEL, LEVEL_DIR, ...) _hb_debug_msg (#WHAT, (OBJ), nullptr, true, (LEVEL), (LEVEL_DIR), __VA_ARGS__) +#define DEBUG_MSG(WHAT, OBJ, ...) _hb_debug_msg (#WHAT, (OBJ), nullptr, false, 0, 0, __VA_ARGS__) +#define DEBUG_MSG_FUNC(WHAT, OBJ, ...) _hb_debug_msg (#WHAT, (OBJ), HB_FUNC, false, 0, 0, __VA_ARGS__) + + +/* + * Printer + */ + +template +struct hb_printer_t { + const char *print (const T&) { return "something"; } +}; + +template <> +struct hb_printer_t { + const char *print (bool v) { return v ? "true" : "false"; } +}; + +template <> +struct hb_printer_t { + const char *print (hb_empty_t) { return ""; } +}; + + +/* + * Trace + */ + +template +static inline void _hb_warn_no_return (bool returned) +{ + if (unlikely (!returned)) { + fprintf (stderr, "OUCH, returned with no call to return_trace(). This is a bug, please report.\n"); + } +} +template <> +/*static*/ inline void _hb_warn_no_return (bool returned HB_UNUSED) +{} + +template +struct hb_auto_trace_t +{ + explicit inline hb_auto_trace_t (unsigned int *plevel_, + const char *what_, + const void *obj_, + const char *func, + const char *message, + ...) HB_PRINTF_FUNC(6, 7) + : plevel (plevel_), what (what_), obj (obj_), returned (false) + { + if (plevel) ++*plevel; + + va_list ap; + va_start (ap, message); + _hb_debug_msg_va (what, obj, func, true, plevel ? *plevel : 0, +1, message, ap); + va_end (ap); + } + ~hb_auto_trace_t () + { + _hb_warn_no_return (returned); + if (!returned) { + _hb_debug_msg (what, obj, nullptr, true, plevel ? *plevel : 1, -1, " "); + } + if (plevel) --*plevel; + } + + template + T ret (T&& v, + const char *func = "", + unsigned int line = 0) + { + if (unlikely (returned)) { + fprintf (stderr, "OUCH, double calls to return_trace(). This is a bug, please report.\n"); + return std::forward (v); + } + + _hb_debug_msg (what, obj, func, true, plevel ? *plevel : 1, -1, + "return %s (line %u)", + hb_printer_t>().print (v), line); + if (plevel) --*plevel; + plevel = nullptr; + returned = true; + return std::forward (v); + } + + private: + unsigned int *plevel; + const char *what; + const void *obj; + bool returned; +}; +template /* Make sure we don't use hb_auto_trace_t when not tracing. */ +struct hb_auto_trace_t<0, ret_t> +{ + explicit inline hb_auto_trace_t (unsigned int *plevel_, + const char *what_, + const void *obj_, + const char *func, + const char *message, + ...) HB_PRINTF_FUNC(6, 7) {} + + template + T ret (T&& v, + const char *func HB_UNUSED = nullptr, + unsigned int line HB_UNUSED = 0) { return std::forward (v); } +}; + +/* For disabled tracing; optimize out everything. + * https://github.com/harfbuzz/harfbuzz/pull/605 */ +template +struct hb_no_trace_t { + template + T ret (T&& v, + const char *func HB_UNUSED = nullptr, + unsigned int line HB_UNUSED = 0) { return std::forward (v); } +}; + +#define return_trace(RET) return trace.ret (RET, HB_FUNC, __LINE__) + + +/* + * Instances. + */ + +#ifndef HB_DEBUG_ARABIC +#define HB_DEBUG_ARABIC (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_BLOB +#define HB_DEBUG_BLOB (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_CORETEXT +#define HB_DEBUG_CORETEXT (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_DIRECTWRITE +#define HB_DEBUG_DIRECTWRITE (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_FT +#define HB_DEBUG_FT (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_JUSTIFY +#define HB_DEBUG_JUSTIFY (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_OBJECT +#define HB_DEBUG_OBJECT (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_SHAPE_PLAN +#define HB_DEBUG_SHAPE_PLAN (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_UNISCRIBE +#define HB_DEBUG_UNISCRIBE (HB_DEBUG+0) +#endif + +/* + * With tracing. + */ + +#ifndef HB_DEBUG_APPLY +#define HB_DEBUG_APPLY (HB_DEBUG+0) +#endif +#if HB_DEBUG_APPLY +#define TRACE_APPLY(this) \ + hb_auto_trace_t trace \ + (&c->debug_depth, c->get_name (), this, HB_FUNC, \ + "idx %u gid %u lookup %d", \ + c->buffer->idx, c->buffer->cur().codepoint, (int) c->lookup_index) +#else +#define TRACE_APPLY(this) hb_no_trace_t trace +#endif + +#ifndef HB_DEBUG_SANITIZE +#define HB_DEBUG_SANITIZE (HB_DEBUG+0) +#endif +#if HB_DEBUG_SANITIZE +#define TRACE_SANITIZE(this) \ + hb_auto_trace_t trace \ + (&c->debug_depth, c->get_name (), this, HB_FUNC, \ + " ") +#else +#define TRACE_SANITIZE(this) hb_no_trace_t trace +#endif + +#ifndef HB_DEBUG_SERIALIZE +#define HB_DEBUG_SERIALIZE (HB_DEBUG+0) +#endif +#if HB_DEBUG_SERIALIZE +#define TRACE_SERIALIZE(this) \ + hb_auto_trace_t trace \ + (&c->debug_depth, "SERIALIZE", c, HB_FUNC, \ + " ") +#else +#define TRACE_SERIALIZE(this) hb_no_trace_t trace +#endif + +#ifndef HB_DEBUG_SUBSET +#define HB_DEBUG_SUBSET (HB_DEBUG+0) +#endif +#if HB_DEBUG_SUBSET +#define TRACE_SUBSET(this) \ + hb_auto_trace_t trace \ + (&c->debug_depth, c->get_name (), this, HB_FUNC, \ + " ") +#else +#define TRACE_SUBSET(this) hb_no_trace_t trace +#endif + +#ifndef HB_DEBUG_SUBSET_REPACK +#define HB_DEBUG_SUBSET_REPACK (HB_DEBUG+0) +#endif + +#ifndef HB_DEBUG_DISPATCH +#define HB_DEBUG_DISPATCH ( \ + HB_DEBUG_APPLY + \ + HB_DEBUG_SANITIZE + \ + HB_DEBUG_SERIALIZE + \ + HB_DEBUG_SUBSET + \ + 0) +#endif +#if HB_DEBUG_DISPATCH +#define TRACE_DISPATCH(this, format) \ + hb_auto_trace_t trace \ + (&c->debug_depth, c->get_name (), this, HB_FUNC, \ + "format %u", (unsigned) format) +#else +#define TRACE_DISPATCH(this, format) hb_no_trace_t trace +#endif + + +#ifndef HB_BUFFER_MESSAGE_MORE +#define HB_BUFFER_MESSAGE_MORE (HB_DEBUG+1) +#endif + + +#endif /* HB_DEBUG_HH */ diff --git a/gfx/harfbuzz/src/hb-deprecated.h b/gfx/harfbuzz/src/hb-deprecated.h new file mode 100644 index 0000000000..b032a941b2 --- /dev/null +++ b/gfx/harfbuzz/src/hb-deprecated.h @@ -0,0 +1,263 @@ +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_DEPRECATED_H +#define HB_DEPRECATED_H + +#include "hb-common.h" +#include "hb-unicode.h" +#include "hb-font.h" +#include "hb-set.h" + + +/** + * SECTION:hb-deprecated + * @title: hb-deprecated + * @short_description: Deprecated API + * @include: hb.h + * + * These API have been deprecated in favor of newer API, or because they + * were deemed unnecessary. + **/ + + +HB_BEGIN_DECLS + +#ifndef HB_DISABLE_DEPRECATED + + +/** + * HB_SCRIPT_CANADIAN_ABORIGINAL: + * + * Use #HB_SCRIPT_CANADIAN_SYLLABICS instead: + * + * Deprecated: 0.9.20 + */ +#define HB_SCRIPT_CANADIAN_ABORIGINAL HB_SCRIPT_CANADIAN_SYLLABICS + +/** + * HB_BUFFER_FLAGS_DEFAULT: + * + * Use #HB_BUFFER_FLAG_DEFAULT instead. + * + * Deprecated: 0.9.20 + */ +#define HB_BUFFER_FLAGS_DEFAULT HB_BUFFER_FLAG_DEFAULT +/** + * HB_BUFFER_SERIALIZE_FLAGS_DEFAULT: + * + * Use #HB_BUFFER_SERIALIZE_FLAG_DEFAULT instead. + * + * Deprecated: 0.9.20 + */ +#define HB_BUFFER_SERIALIZE_FLAGS_DEFAULT HB_BUFFER_SERIALIZE_FLAG_DEFAULT + +/** + * hb_font_get_glyph_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @unicode: The Unicode code point to query + * @variation_selector: The variation-selector code point to query + * @glyph: (out): The glyph ID retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph ID for a specified Unicode code point + * font, with an optional variation selector. + * + * Return value: `true` if data found, `false` otherwise + * Deprecated: 1.2.3 + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data); + +HB_DEPRECATED_FOR (hb_font_funcs_set_nominal_glyph_func and hb_font_funcs_set_variation_glyph_func) +HB_EXTERN void +hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/* https://github.com/harfbuzz/harfbuzz/pull/4207 */ +/** + * HB_UNICODE_COMBINING_CLASS_CCC133: + * + * [Tibetan] + * + * Deprecated: 7.2.0 + **/ +#define HB_UNICODE_COMBINING_CLASS_CCC133 133 + +/** + * hb_unicode_eastasian_width_func_t: + * @ufuncs: A Unicode-functions structure + * @unicode: The code point to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * Deprecated: 2.0.0 + */ +typedef unsigned int (*hb_unicode_eastasian_width_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode, + void *user_data); + +/** + * hb_unicode_funcs_set_eastasian_width_func: + * @ufuncs: a Unicode-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_eastasian_width_func_t. + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +HB_EXTERN HB_DEPRECATED void +hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_eastasian_width_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_eastasian_width: + * @ufuncs: a Unicode-function structure + * @unicode: The code point to query + * + * Don't use. Not used by HarfBuzz. + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +HB_EXTERN HB_DEPRECATED unsigned int +hb_unicode_eastasian_width (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode); + + +/** + * hb_unicode_decompose_compatibility_func_t: + * @ufuncs: a Unicode function structure + * @u: codepoint to decompose + * @decomposed: address of codepoint array (of length #HB_UNICODE_MAX_DECOMPOSITION_LEN) to write decomposition into + * @user_data: user data pointer as passed to hb_unicode_funcs_set_decompose_compatibility_func() + * + * Fully decompose @u to its Unicode compatibility decomposition. The codepoints of the decomposition will be written to @decomposed. + * The complete length of the decomposition will be returned. + * + * If @u has no compatibility decomposition, zero should be returned. + * + * The Unicode standard guarantees that a buffer of length #HB_UNICODE_MAX_DECOMPOSITION_LEN codepoints will always be sufficient for any + * compatibility decomposition plus an terminating value of 0. Consequently, @decompose must be allocated by the caller to be at least this length. Implementations + * of this function type must ensure that they do not write past the provided array. + * + * Return value: number of codepoints in the full compatibility decomposition of @u, or 0 if no decomposition available. + * + * Deprecated: 2.0.0 + */ +typedef unsigned int (*hb_unicode_decompose_compatibility_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t u, + hb_codepoint_t *decomposed, + void *user_data); + +/** + * HB_UNICODE_MAX_DECOMPOSITION_LEN: + * + * See Unicode 6.1 for details on the maximum decomposition length. + * + * Deprecated: 2.0.0 + */ +#define HB_UNICODE_MAX_DECOMPOSITION_LEN (18+1) /* codepoints */ + +/** + * hb_unicode_funcs_set_decompose_compatibility_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_decompose_compatibility_func_t. + * + * + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +HB_EXTERN HB_DEPRECATED void +hb_unicode_funcs_set_decompose_compatibility_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_decompose_compatibility_func_t func, + void *user_data, hb_destroy_func_t destroy); + +HB_EXTERN HB_DEPRECATED unsigned int +hb_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t u, + hb_codepoint_t *decomposed); + + +/** + * hb_font_get_glyph_v_kerning_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the kerning-adjustment value for a glyph-pair in + * the specified font, for vertical text segments. + * + **/ +typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_v_kerning_func_t; + +/** + * hb_font_funcs_set_glyph_v_kerning_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_v_kerning_func_t. + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_v_kerning_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_v_kerning_func_t func, + void *user_data, hb_destroy_func_t destroy); + +HB_EXTERN hb_position_t +hb_font_get_glyph_v_kerning (hb_font_t *font, + hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph); + +#endif + + +HB_END_DECLS + +#endif /* HB_DEPRECATED_H */ diff --git a/gfx/harfbuzz/src/hb-directwrite.cc b/gfx/harfbuzz/src/hb-directwrite.cc new file mode 100644 index 0000000000..42764a244b --- /dev/null +++ b/gfx/harfbuzz/src/hb-directwrite.cc @@ -0,0 +1,884 @@ +/* + * Copyright © 2015-2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include "hb.hh" + +#ifdef HAVE_DIRECTWRITE + +#include "hb-shaper-impl.hh" + +#include + +#include "hb-directwrite.h" + +#include "hb-ms-feature-ranges.hh" + +/** + * SECTION:hb-directwrite + * @title: hb-directwrite + * @short_description: DirectWrite integration + * @include: hb-directwrite.h + * + * Functions for using HarfBuzz with DirectWrite fonts. + **/ + +/* Declare object creator for dynamic support of DWRITE */ +typedef HRESULT (WINAPI *t_DWriteCreateFactory)( + DWRITE_FACTORY_TYPE factoryType, + REFIID iid, + IUnknown **factory +); + + +/* + * DirectWrite font stream helpers + */ + +// This is a font loader which provides only one font (unlike its original design). +// For a better implementation which was also source of this +// and DWriteFontFileStream, have a look at to NativeFontResourceDWrite.cpp in Mozilla +class DWriteFontFileLoader : public IDWriteFontFileLoader +{ +private: + IDWriteFontFileStream *mFontFileStream; +public: + DWriteFontFileLoader (IDWriteFontFileStream *fontFileStream) + { mFontFileStream = fontFileStream; } + + // IUnknown interface + IFACEMETHOD (QueryInterface) (IID const& iid, OUT void** ppObject) + { return S_OK; } + IFACEMETHOD_ (ULONG, AddRef) () { return 1; } + IFACEMETHOD_ (ULONG, Release) () { return 1; } + + // IDWriteFontFileLoader methods + virtual HRESULT STDMETHODCALLTYPE + CreateStreamFromKey (void const* fontFileReferenceKey, + uint32_t fontFileReferenceKeySize, + OUT IDWriteFontFileStream** fontFileStream) + { + *fontFileStream = mFontFileStream; + return S_OK; + } + + virtual ~DWriteFontFileLoader() {} +}; + +class DWriteFontFileStream : public IDWriteFontFileStream +{ +private: + uint8_t *mData; + uint32_t mSize; +public: + DWriteFontFileStream (uint8_t *aData, uint32_t aSize) + { + mData = aData; + mSize = aSize; + } + + // IUnknown interface + IFACEMETHOD (QueryInterface) (IID const& iid, OUT void** ppObject) + { return S_OK; } + IFACEMETHOD_ (ULONG, AddRef) () { return 1; } + IFACEMETHOD_ (ULONG, Release) () { return 1; } + + // IDWriteFontFileStream methods + virtual HRESULT STDMETHODCALLTYPE + ReadFileFragment (void const** fragmentStart, + UINT64 fileOffset, + UINT64 fragmentSize, + OUT void** fragmentContext) + { + // We are required to do bounds checking. + if (fileOffset + fragmentSize > mSize) return E_FAIL; + + // truncate the 64 bit fileOffset to size_t sized index into mData + size_t index = static_cast (fileOffset); + + // We should be alive for the duration of this. + *fragmentStart = &mData[index]; + *fragmentContext = nullptr; + return S_OK; + } + + virtual void STDMETHODCALLTYPE + ReleaseFileFragment (void* fragmentContext) {} + + virtual HRESULT STDMETHODCALLTYPE + GetFileSize (OUT UINT64* fileSize) + { + *fileSize = mSize; + return S_OK; + } + + virtual HRESULT STDMETHODCALLTYPE + GetLastWriteTime (OUT UINT64* lastWriteTime) { return E_NOTIMPL; } + + virtual ~DWriteFontFileStream() {} +}; + + +/* +* shaper face data +*/ + +struct hb_directwrite_face_data_t +{ + HMODULE dwrite_dll; + IDWriteFactory *dwriteFactory; + IDWriteFontFile *fontFile; + DWriteFontFileStream *fontFileStream; + DWriteFontFileLoader *fontFileLoader; + IDWriteFontFace *fontFace; + hb_blob_t *faceBlob; +}; + +hb_directwrite_face_data_t * +_hb_directwrite_shaper_face_data_create (hb_face_t *face) +{ + hb_directwrite_face_data_t *data = new hb_directwrite_face_data_t; + if (unlikely (!data)) + return nullptr; + +#define FAIL(...) \ + HB_STMT_START { \ + DEBUG_MSG (DIRECTWRITE, nullptr, __VA_ARGS__); \ + return nullptr; \ + } HB_STMT_END + + data->dwrite_dll = LoadLibrary (TEXT ("DWRITE")); + if (unlikely (!data->dwrite_dll)) + FAIL ("Cannot find DWrite.DLL"); + + t_DWriteCreateFactory p_DWriteCreateFactory; + +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-function-type" +#endif + + p_DWriteCreateFactory = (t_DWriteCreateFactory) + GetProcAddress (data->dwrite_dll, "DWriteCreateFactory"); + +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + + if (unlikely (!p_DWriteCreateFactory)) + FAIL ("Cannot find DWriteCreateFactory()."); + + HRESULT hr; + + // TODO: factory and fontFileLoader should be cached separately + IDWriteFactory* dwriteFactory; + hr = p_DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof (IDWriteFactory), + (IUnknown**) &dwriteFactory); + + if (unlikely (hr != S_OK)) + FAIL ("Failed to run DWriteCreateFactory()."); + + hb_blob_t *blob = hb_face_reference_blob (face); + DWriteFontFileStream *fontFileStream; + fontFileStream = new DWriteFontFileStream ((uint8_t *) hb_blob_get_data (blob, nullptr), + hb_blob_get_length (blob)); + + DWriteFontFileLoader *fontFileLoader = new DWriteFontFileLoader (fontFileStream); + dwriteFactory->RegisterFontFileLoader (fontFileLoader); + + IDWriteFontFile *fontFile; + uint64_t fontFileKey = 0; + hr = dwriteFactory->CreateCustomFontFileReference (&fontFileKey, sizeof (fontFileKey), + fontFileLoader, &fontFile); + + if (FAILED (hr)) + FAIL ("Failed to load font file from data!"); + + BOOL isSupported; + DWRITE_FONT_FILE_TYPE fileType; + DWRITE_FONT_FACE_TYPE faceType; + uint32_t numberOfFaces; + hr = fontFile->Analyze (&isSupported, &fileType, &faceType, &numberOfFaces); + if (FAILED (hr) || !isSupported) + FAIL ("Font file is not supported."); + +#undef FAIL + + IDWriteFontFace *fontFace; + dwriteFactory->CreateFontFace (faceType, 1, &fontFile, 0, + DWRITE_FONT_SIMULATIONS_NONE, &fontFace); + + data->dwriteFactory = dwriteFactory; + data->fontFile = fontFile; + data->fontFileStream = fontFileStream; + data->fontFileLoader = fontFileLoader; + data->fontFace = fontFace; + data->faceBlob = blob; + + return data; +} + +void +_hb_directwrite_shaper_face_data_destroy (hb_directwrite_face_data_t *data) +{ + if (data->fontFace) + data->fontFace->Release (); + if (data->fontFile) + data->fontFile->Release (); + if (data->dwriteFactory) + { + if (data->fontFileLoader) + data->dwriteFactory->UnregisterFontFileLoader (data->fontFileLoader); + data->dwriteFactory->Release (); + } + delete data->fontFileLoader; + delete data->fontFileStream; + hb_blob_destroy (data->faceBlob); + if (data->dwrite_dll) + FreeLibrary (data->dwrite_dll); + delete data; +} + + +/* + * shaper font data + */ + +struct hb_directwrite_font_data_t {}; + +hb_directwrite_font_data_t * +_hb_directwrite_shaper_font_data_create (hb_font_t *font) +{ + return (hb_directwrite_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; +} + +void +_hb_directwrite_shaper_font_data_destroy (hb_directwrite_font_data_t *data) +{ +} + + +// Most of TextAnalysis is originally written by Bas Schouten for Mozilla project +// but now is relicensed to MIT for HarfBuzz use +class TextAnalysis : public IDWriteTextAnalysisSource, public IDWriteTextAnalysisSink +{ +public: + + IFACEMETHOD (QueryInterface) (IID const& iid, OUT void** ppObject) + { return S_OK; } + IFACEMETHOD_ (ULONG, AddRef) () { return 1; } + IFACEMETHOD_ (ULONG, Release) () { return 1; } + + // A single contiguous run of characters containing the same analysis + // results. + struct Run + { + uint32_t mTextStart; // starting text position of this run + uint32_t mTextLength; // number of contiguous code units covered + uint32_t mGlyphStart; // starting glyph in the glyphs array + uint32_t mGlyphCount; // number of glyphs associated with this run + // text + DWRITE_SCRIPT_ANALYSIS mScript; + uint8_t mBidiLevel; + bool mIsSideways; + + bool ContainsTextPosition (uint32_t aTextPosition) const + { + return aTextPosition >= mTextStart && + aTextPosition < mTextStart + mTextLength; + } + + Run *nextRun; + }; + +public: + TextAnalysis (const wchar_t* text, uint32_t textLength, + const wchar_t* localeName, DWRITE_READING_DIRECTION readingDirection) + : mTextLength (textLength), mText (text), mLocaleName (localeName), + mReadingDirection (readingDirection), mCurrentRun (nullptr) {} + ~TextAnalysis () + { + // delete runs, except mRunHead which is part of the TextAnalysis object + for (Run *run = mRunHead.nextRun; run;) + { + Run *origRun = run; + run = run->nextRun; + delete origRun; + } + } + + STDMETHODIMP + GenerateResults (IDWriteTextAnalyzer* textAnalyzer, Run **runHead) + { + // Analyzes the text using the script analyzer and returns + // the result as a series of runs. + + HRESULT hr = S_OK; + + // Initially start out with one result that covers the entire range. + // This result will be subdivided by the analysis processes. + mRunHead.mTextStart = 0; + mRunHead.mTextLength = mTextLength; + mRunHead.mBidiLevel = + (mReadingDirection == DWRITE_READING_DIRECTION_RIGHT_TO_LEFT); + mRunHead.nextRun = nullptr; + mCurrentRun = &mRunHead; + + // Call each of the analyzers in sequence, recording their results. + if (SUCCEEDED (hr = textAnalyzer->AnalyzeScript (this, 0, mTextLength, this))) + *runHead = &mRunHead; + + return hr; + } + + // IDWriteTextAnalysisSource implementation + + IFACEMETHODIMP + GetTextAtPosition (uint32_t textPosition, + OUT wchar_t const** textString, + OUT uint32_t* textLength) + { + if (textPosition >= mTextLength) + { + // No text at this position, valid query though. + *textString = nullptr; + *textLength = 0; + } + else + { + *textString = mText + textPosition; + *textLength = mTextLength - textPosition; + } + return S_OK; + } + + IFACEMETHODIMP + GetTextBeforePosition (uint32_t textPosition, + OUT wchar_t const** textString, + OUT uint32_t* textLength) + { + if (textPosition == 0 || textPosition > mTextLength) + { + // Either there is no text before here (== 0), or this + // is an invalid position. The query is considered valid though. + *textString = nullptr; + *textLength = 0; + } + else + { + *textString = mText; + *textLength = textPosition; + } + return S_OK; + } + + IFACEMETHODIMP_ (DWRITE_READING_DIRECTION) + GetParagraphReadingDirection () { return mReadingDirection; } + + IFACEMETHODIMP GetLocaleName (uint32_t textPosition, uint32_t* textLength, + wchar_t const** localeName) + { return S_OK; } + + IFACEMETHODIMP + GetNumberSubstitution (uint32_t textPosition, + OUT uint32_t* textLength, + OUT IDWriteNumberSubstitution** numberSubstitution) + { + // We do not support number substitution. + *numberSubstitution = nullptr; + *textLength = mTextLength - textPosition; + + return S_OK; + } + + // IDWriteTextAnalysisSink implementation + + IFACEMETHODIMP + SetScriptAnalysis (uint32_t textPosition, uint32_t textLength, + DWRITE_SCRIPT_ANALYSIS const* scriptAnalysis) + { + SetCurrentRun (textPosition); + SplitCurrentRun (textPosition); + while (textLength > 0) + { + Run *run = FetchNextRun (&textLength); + run->mScript = *scriptAnalysis; + } + + return S_OK; + } + + IFACEMETHODIMP + SetLineBreakpoints (uint32_t textPosition, + uint32_t textLength, + const DWRITE_LINE_BREAKPOINT* lineBreakpoints) + { return S_OK; } + + IFACEMETHODIMP SetBidiLevel (uint32_t textPosition, uint32_t textLength, + uint8_t explicitLevel, uint8_t resolvedLevel) + { return S_OK; } + + IFACEMETHODIMP + SetNumberSubstitution (uint32_t textPosition, uint32_t textLength, + IDWriteNumberSubstitution* numberSubstitution) + { return S_OK; } + +protected: + Run *FetchNextRun (IN OUT uint32_t* textLength) + { + // Used by the sink setters, this returns a reference to the next run. + // Position and length are adjusted to now point after the current run + // being returned. + + Run *origRun = mCurrentRun; + // Split the tail if needed (the length remaining is less than the + // current run's size). + if (*textLength < mCurrentRun->mTextLength) + SplitCurrentRun (mCurrentRun->mTextStart + *textLength); + else + // Just advance the current run. + mCurrentRun = mCurrentRun->nextRun; + *textLength -= origRun->mTextLength; + + // Return a reference to the run that was just current. + return origRun; + } + + void SetCurrentRun (uint32_t textPosition) + { + // Move the current run to the given position. + // Since the analyzers generally return results in a forward manner, + // this will usually just return early. If not, find the + // corresponding run for the text position. + + if (mCurrentRun && mCurrentRun->ContainsTextPosition (textPosition)) + return; + + for (Run *run = &mRunHead; run; run = run->nextRun) + if (run->ContainsTextPosition (textPosition)) + { + mCurrentRun = run; + return; + } + assert (0); // We should always be able to find the text position in one of our runs + } + + void SplitCurrentRun (uint32_t splitPosition) + { + if (!mCurrentRun) + { + assert (0); // SplitCurrentRun called without current run + // Shouldn't be calling this when no current run is set! + return; + } + // Split the current run. + if (splitPosition <= mCurrentRun->mTextStart) + { + // No need to split, already the start of a run + // or before it. Usually the first. + return; + } + Run *newRun = new Run; + + *newRun = *mCurrentRun; + + // Insert the new run in our linked list. + newRun->nextRun = mCurrentRun->nextRun; + mCurrentRun->nextRun = newRun; + + // Adjust runs' text positions and lengths. + uint32_t splitPoint = splitPosition - mCurrentRun->mTextStart; + newRun->mTextStart += splitPoint; + newRun->mTextLength -= splitPoint; + mCurrentRun->mTextLength = splitPoint; + mCurrentRun = newRun; + } + +protected: + // Input + // (weak references are fine here, since this class is a transient + // stack-based helper that doesn't need to copy data) + uint32_t mTextLength; + const wchar_t* mText; + const wchar_t* mLocaleName; + DWRITE_READING_DIRECTION mReadingDirection; + + // Current processing state. + Run *mCurrentRun; + + // Output is a list of runs starting here + Run mRunHead; +}; + +/* + * shaper + */ + +hb_bool_t +_hb_directwrite_shape (hb_shape_plan_t *shape_plan, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features, + unsigned int num_features) +{ + hb_face_t *face = font->face; + const hb_directwrite_face_data_t *face_data = face->data.directwrite; + IDWriteFactory *dwriteFactory = face_data->dwriteFactory; + IDWriteFontFace *fontFace = face_data->fontFace; + + IDWriteTextAnalyzer* analyzer; + dwriteFactory->CreateTextAnalyzer (&analyzer); + + unsigned int scratch_size; + hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size); +#define ALLOCATE_ARRAY(Type, name, len) \ + Type *name = (Type *) scratch; \ + do { \ + unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \ + assert (_consumed <= scratch_size); \ + scratch += _consumed; \ + scratch_size -= _consumed; \ + } while (0) + +#define utf16_index() var1.u32 + + ALLOCATE_ARRAY (wchar_t, textString, buffer->len * 2); + + unsigned int chars_len = 0; + for (unsigned int i = 0; i < buffer->len; i++) + { + hb_codepoint_t c = buffer->info[i].codepoint; + buffer->info[i].utf16_index () = chars_len; + if (likely (c <= 0xFFFFu)) + textString[chars_len++] = c; + else if (unlikely (c > 0x10FFFFu)) + textString[chars_len++] = 0xFFFDu; + else + { + textString[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10); + textString[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1u << 10) - 1)); + } + } + + ALLOCATE_ARRAY (WORD, log_clusters, chars_len); + /* Need log_clusters to assign features. */ + chars_len = 0; + for (unsigned int i = 0; i < buffer->len; i++) + { + hb_codepoint_t c = buffer->info[i].codepoint; + unsigned int cluster = buffer->info[i].cluster; + log_clusters[chars_len++] = cluster; + if (hb_in_range (c, 0x10000u, 0x10FFFFu)) + log_clusters[chars_len++] = cluster; /* Surrogates. */ + } + + DWRITE_READING_DIRECTION readingDirection; + readingDirection = buffer->props.direction ? + DWRITE_READING_DIRECTION_RIGHT_TO_LEFT : + DWRITE_READING_DIRECTION_LEFT_TO_RIGHT; + + /* + * There's an internal 16-bit limit on some things inside the analyzer, + * but we never attempt to shape a word longer than 64K characters + * in a single gfxShapedWord, so we cannot exceed that limit. + */ + uint32_t textLength = chars_len; + + TextAnalysis analysis (textString, textLength, nullptr, readingDirection); + TextAnalysis::Run *runHead; + HRESULT hr; + hr = analysis.GenerateResults (analyzer, &runHead); + +#define FAIL(...) \ + HB_STMT_START { \ + DEBUG_MSG (DIRECTWRITE, nullptr, __VA_ARGS__); \ + return false; \ + } HB_STMT_END + + if (FAILED (hr)) + FAIL ("Analyzer failed to generate results."); + + uint32_t maxGlyphCount = 3 * textLength / 2 + 16; + uint32_t glyphCount; + bool isRightToLeft = HB_DIRECTION_IS_BACKWARD (buffer->props.direction); + + const wchar_t localeName[20] = {0}; + if (buffer->props.language) + mbstowcs ((wchar_t*) localeName, + hb_language_to_string (buffer->props.language), 20); + + /* + * Set up features. + */ + static_assert ((sizeof (DWRITE_TYPOGRAPHIC_FEATURES) == sizeof (hb_ms_features_t)), ""); + static_assert ((sizeof (DWRITE_FONT_FEATURE) == sizeof (hb_ms_feature_t)), ""); + hb_vector_t range_features; + hb_vector_t range_char_counts; + if (num_features) + { + hb_vector_t feature_records; + hb_vector_t range_records; + if (hb_ms_setup_features (features, num_features, feature_records, range_records)) + hb_ms_make_feature_ranges (feature_records, + range_records, + 0, + chars_len, + log_clusters, + range_features, + range_char_counts); + } + + uint16_t* clusterMap; + clusterMap = new uint16_t[textLength]; + DWRITE_SHAPING_TEXT_PROPERTIES* textProperties; + textProperties = new DWRITE_SHAPING_TEXT_PROPERTIES[textLength]; + +retry_getglyphs: + uint16_t* glyphIndices = new uint16_t[maxGlyphCount]; + DWRITE_SHAPING_GLYPH_PROPERTIES* glyphProperties; + glyphProperties = new DWRITE_SHAPING_GLYPH_PROPERTIES[maxGlyphCount]; + + hr = analyzer->GetGlyphs (textString, + chars_len, + fontFace, + false, + isRightToLeft, + &runHead->mScript, + localeName, + nullptr, + (const DWRITE_TYPOGRAPHIC_FEATURES**) range_features.arrayZ, + range_char_counts.arrayZ, + range_features.length, + maxGlyphCount, + clusterMap, + textProperties, + glyphIndices, + glyphProperties, + &glyphCount); + + if (unlikely (hr == HRESULT_FROM_WIN32 (ERROR_INSUFFICIENT_BUFFER))) + { + delete [] glyphIndices; + delete [] glyphProperties; + + maxGlyphCount *= 2; + + goto retry_getglyphs; + } + if (FAILED (hr)) + FAIL ("Analyzer failed to get glyphs."); + + float* glyphAdvances = new float[maxGlyphCount]; + DWRITE_GLYPH_OFFSET* glyphOffsets = new DWRITE_GLYPH_OFFSET[maxGlyphCount]; + + /* The -2 in the following is to compensate for possible + * alignment needed after the WORD array. sizeof (WORD) == 2. */ + unsigned int glyphs_size = (scratch_size * sizeof (int) - 2) + / (sizeof (WORD) + + sizeof (DWRITE_SHAPING_GLYPH_PROPERTIES) + + sizeof (int) + + sizeof (DWRITE_GLYPH_OFFSET) + + sizeof (uint32_t)); + ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size); + +#undef ALLOCATE_ARRAY + + int fontEmSize = font->face->get_upem (); + if (fontEmSize < 0) fontEmSize = -fontEmSize; + + if (fontEmSize < 0) fontEmSize = -fontEmSize; + double x_mult = (double) font->x_scale / fontEmSize; + double y_mult = (double) font->y_scale / fontEmSize; + + hr = analyzer->GetGlyphPlacements (textString, + clusterMap, + textProperties, + chars_len, + glyphIndices, + glyphProperties, + glyphCount, + fontFace, + fontEmSize, + false, + isRightToLeft, + &runHead->mScript, + localeName, + (const DWRITE_TYPOGRAPHIC_FEATURES**) range_features.arrayZ, + range_char_counts.arrayZ, + range_features.length, + glyphAdvances, + glyphOffsets); + + if (FAILED (hr)) + FAIL ("Analyzer failed to get glyph placements."); + + /* Ok, we've got everything we need, now compose output buffer, + * very, *very*, carefully! */ + + /* Calculate visual-clusters. That's what we ship. */ + for (unsigned int i = 0; i < glyphCount; i++) + vis_clusters[i] = (uint32_t) -1; + for (unsigned int i = 0; i < buffer->len; i++) + { + uint32_t *p = + &vis_clusters[log_clusters[buffer->info[i].utf16_index ()]]; + *p = hb_min (*p, buffer->info[i].cluster); + } + for (unsigned int i = 1; i < glyphCount; i++) + if (vis_clusters[i] == (uint32_t) -1) + vis_clusters[i] = vis_clusters[i - 1]; + +#undef utf16_index + + if (unlikely (!buffer->ensure (glyphCount))) + FAIL ("Buffer in error"); + +#undef FAIL + + /* Set glyph infos */ + buffer->len = 0; + for (unsigned int i = 0; i < glyphCount; i++) + { + hb_glyph_info_t *info = &buffer->info[buffer->len++]; + + info->codepoint = glyphIndices[i]; + info->cluster = vis_clusters[i]; + + /* The rest is crap. Let's store position info there for now. */ + info->mask = glyphAdvances[i]; + info->var1.i32 = glyphOffsets[i].advanceOffset; + info->var2.i32 = glyphOffsets[i].ascenderOffset; + } + + /* Set glyph positions */ + buffer->clear_positions (); + for (unsigned int i = 0; i < glyphCount; i++) + { + hb_glyph_info_t *info = &buffer->info[i]; + hb_glyph_position_t *pos = &buffer->pos[i]; + + /* TODO vertical */ + pos->x_advance = x_mult * (int32_t) info->mask; + pos->x_offset = x_mult * (isRightToLeft ? -info->var1.i32 : info->var1.i32); + pos->y_offset = y_mult * info->var2.i32; + } + + if (isRightToLeft) hb_buffer_reverse (buffer); + + buffer->clear_glyph_flags (); + buffer->unsafe_to_break (); + + delete [] clusterMap; + delete [] glyphIndices; + delete [] textProperties; + delete [] glyphProperties; + delete [] glyphAdvances; + delete [] glyphOffsets; + + /* Wow, done! */ + return true; +} + +struct _hb_directwrite_font_table_context { + IDWriteFontFace *face; + void *table_context; +}; + +static void +_hb_directwrite_table_data_release (void *data) +{ + _hb_directwrite_font_table_context *context = (_hb_directwrite_font_table_context *) data; + context->face->ReleaseFontTable (context->table_context); + hb_free (context); +} + +static hb_blob_t * +_hb_directwrite_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + IDWriteFontFace *dw_face = ((IDWriteFontFace *) user_data); + const void *data; + uint32_t length; + void *table_context; + BOOL exists; + if (!dw_face || FAILED (dw_face->TryGetFontTable (hb_uint32_swap (tag), &data, + &length, &table_context, &exists))) + return nullptr; + + if (!data || !exists || !length) + { + dw_face->ReleaseFontTable (table_context); + return nullptr; + } + + _hb_directwrite_font_table_context *context = (_hb_directwrite_font_table_context *) hb_malloc (sizeof (_hb_directwrite_font_table_context)); + context->face = dw_face; + context->table_context = table_context; + + return hb_blob_create ((const char *) data, length, HB_MEMORY_MODE_READONLY, + context, _hb_directwrite_table_data_release); +} + +static void +_hb_directwrite_font_release (void *data) +{ + if (data) + ((IDWriteFontFace *) data)->Release (); +} + +/** + * hb_directwrite_face_create: + * @font_face: a DirectWrite IDWriteFontFace object. + * + * Constructs a new face object from the specified DirectWrite IDWriteFontFace. + * + * Return value: #hb_face_t object corresponding to the given input + * + * Since: 2.4.0 + **/ +hb_face_t * +hb_directwrite_face_create (IDWriteFontFace *font_face) +{ + if (font_face) + font_face->AddRef (); + return hb_face_create_for_tables (_hb_directwrite_reference_table, font_face, + _hb_directwrite_font_release); +} + +/** +* hb_directwrite_face_get_font_face: +* @face: a #hb_face_t object +* +* Gets the DirectWrite IDWriteFontFace associated with @face. +* +* Return value: DirectWrite IDWriteFontFace object corresponding to the given input +* +* Since: 2.5.0 +**/ +IDWriteFontFace * +hb_directwrite_face_get_font_face (hb_face_t *face) +{ + return face->data.directwrite->fontFace; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-directwrite.h b/gfx/harfbuzz/src/hb-directwrite.h new file mode 100644 index 0000000000..f837627a28 --- /dev/null +++ b/gfx/harfbuzz/src/hb-directwrite.h @@ -0,0 +1,40 @@ +/* + * Copyright © 2015-2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_DIRECTWRITE_H +#define HB_DIRECTWRITE_H + +#include "hb.h" + +HB_BEGIN_DECLS + +HB_EXTERN hb_face_t * +hb_directwrite_face_create (IDWriteFontFace *font_face); + +HB_EXTERN IDWriteFontFace * +hb_directwrite_face_get_font_face (hb_face_t *face); + +HB_END_DECLS + +#endif /* HB_DIRECTWRITE_H */ diff --git a/gfx/harfbuzz/src/hb-dispatch.hh b/gfx/harfbuzz/src/hb-dispatch.hh new file mode 100644 index 0000000000..37ca681465 --- /dev/null +++ b/gfx/harfbuzz/src/hb-dispatch.hh @@ -0,0 +1,60 @@ +/* + * Copyright © 2007,2008,2009,2010 Red Hat, Inc. + * Copyright © 2012,2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_DISPATCH_HH +#define HB_DISPATCH_HH + +#include "hb.hh" + +/* + * Dispatch + */ + +template +struct hb_dispatch_context_t +{ + private: + /* https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern */ + const Context* thiz () const { return static_cast (this); } + Context* thiz () { return static_cast< Context *> (this); } + public: + const char *get_name () { return "UNKNOWN"; } + static constexpr unsigned max_debug_depth = MaxDebugDepth; + typedef Return return_t; + template + bool may_dispatch (const T *obj HB_UNUSED, const F *format HB_UNUSED) { return true; } + template + return_t dispatch (const T &obj, Ts&&... ds) + { return obj.dispatch (thiz (), std::forward (ds)...); } + static return_t no_dispatch_return_value () { return Context::default_return_value (); } + static bool stop_sublookup_iteration (const return_t r HB_UNUSED) { return false; } + unsigned debug_depth = 0; +}; + + +#endif /* HB_DISPATCH_HH */ diff --git a/gfx/harfbuzz/src/hb-draw.cc b/gfx/harfbuzz/src/hb-draw.cc new file mode 100644 index 0000000000..f204f56bc7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-draw.cc @@ -0,0 +1,458 @@ +/* + * Copyright © 2019-2020 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include "hb.hh" + +#ifndef HB_NO_DRAW + +#include "hb-draw.hh" + +/** + * SECTION:hb-draw + * @title: hb-draw + * @short_description: Glyph drawing + * @include: hb.h + * + * Functions for drawing (extracting) glyph shapes. + * + * The #hb_draw_funcs_t struct can be used with hb_font_draw_glyph(). + **/ + +static void +hb_draw_move_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED, + hb_draw_state_t *st HB_UNUSED, + float to_x HB_UNUSED, float to_y HB_UNUSED, + void *user_data HB_UNUSED) {} + +static void +hb_draw_line_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED, + hb_draw_state_t *st HB_UNUSED, + float to_x HB_UNUSED, float to_y HB_UNUSED, + void *user_data HB_UNUSED) {} + +static void +hb_draw_quadratic_to_nil (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control_x, float control_y, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ +#define HB_ONE_THIRD 0.33333333f + dfuncs->emit_cubic_to (draw_data, *st, + (st->current_x + 2.f * control_x) * HB_ONE_THIRD, + (st->current_y + 2.f * control_y) * HB_ONE_THIRD, + (to_x + 2.f * control_x) * HB_ONE_THIRD, + (to_y + 2.f * control_y) * HB_ONE_THIRD, + to_x, to_y); +#undef HB_ONE_THIRD +} + +static void +hb_draw_cubic_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED, + hb_draw_state_t *st HB_UNUSED, + float control1_x HB_UNUSED, float control1_y HB_UNUSED, + float control2_x HB_UNUSED, float control2_y HB_UNUSED, + float to_x HB_UNUSED, float to_y HB_UNUSED, + void *user_data HB_UNUSED) {} + +static void +hb_draw_close_path_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED, + hb_draw_state_t *st HB_UNUSED, + void *user_data HB_UNUSED) {} + + +static bool +_hb_draw_funcs_set_preamble (hb_draw_funcs_t *dfuncs, + bool func_is_null, + void **user_data, + hb_destroy_func_t *destroy) +{ + if (hb_object_is_immutable (dfuncs)) + { + if (*destroy) + (*destroy) (*user_data); + return false; + } + + if (func_is_null) + { + if (*destroy) + (*destroy) (*user_data); + *destroy = nullptr; + *user_data = nullptr; + } + + return true; +} + +static bool +_hb_draw_funcs_set_middle (hb_draw_funcs_t *dfuncs, + void *user_data, + hb_destroy_func_t destroy) +{ + if (user_data && !dfuncs->user_data) + { + dfuncs->user_data = (decltype (dfuncs->user_data)) hb_calloc (1, sizeof (*dfuncs->user_data)); + if (unlikely (!dfuncs->user_data)) + goto fail; + } + if (destroy && !dfuncs->destroy) + { + dfuncs->destroy = (decltype (dfuncs->destroy)) hb_calloc (1, sizeof (*dfuncs->destroy)); + if (unlikely (!dfuncs->destroy)) + goto fail; + } + + return true; + +fail: + if (destroy) + (destroy) (user_data); + return false; +} + +#define HB_DRAW_FUNC_IMPLEMENT(name) \ + \ +void \ +hb_draw_funcs_set_##name##_func (hb_draw_funcs_t *dfuncs, \ + hb_draw_##name##_func_t func, \ + void *user_data, \ + hb_destroy_func_t destroy) \ +{ \ + if (!_hb_draw_funcs_set_preamble (dfuncs, !func, &user_data, &destroy))\ + return; \ + \ + if (dfuncs->destroy && dfuncs->destroy->name) \ + dfuncs->destroy->name (!dfuncs->user_data ? nullptr : dfuncs->user_data->name); \ + \ + if (!_hb_draw_funcs_set_middle (dfuncs, user_data, destroy)) \ + return; \ + \ + if (func) \ + dfuncs->func.name = func; \ + else \ + dfuncs->func.name = hb_draw_##name##_nil; \ + \ + if (dfuncs->user_data) \ + dfuncs->user_data->name = user_data; \ + if (dfuncs->destroy) \ + dfuncs->destroy->name = destroy; \ +} + +HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + +/** + * hb_draw_funcs_create: + * + * Creates a new draw callbacks object. + * + * Return value: (transfer full): + * A newly allocated #hb_draw_funcs_t with a reference count of 1. The initial + * reference count should be released with hb_draw_funcs_destroy when you are + * done using the #hb_draw_funcs_t. This function never returns `NULL`. If + * memory cannot be allocated, a special singleton #hb_draw_funcs_t object will + * be returned. + * + * Since: 4.0.0 + **/ +hb_draw_funcs_t * +hb_draw_funcs_create () +{ + hb_draw_funcs_t *dfuncs; + if (unlikely (!(dfuncs = hb_object_create ()))) + return const_cast (&Null (hb_draw_funcs_t)); + + dfuncs->func = Null (hb_draw_funcs_t).func; + + return dfuncs; +} + +DEFINE_NULL_INSTANCE (hb_draw_funcs_t) = +{ + HB_OBJECT_HEADER_STATIC, + + { +#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_nil, + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } +}; + +/** + * hb_draw_funcs_get_empty: + * + * Fetches the singleton empty draw-functions structure. + * + * Return value: (transfer full): The empty draw-functions structure + * + * Since: 7.0.0 + **/ +hb_draw_funcs_t * +hb_draw_funcs_get_empty () +{ + return const_cast (&Null (hb_draw_funcs_t)); +} + +/** + * hb_draw_funcs_reference: (skip) + * @dfuncs: draw functions + * + * Increases the reference count on @dfuncs by one. + * + * This prevents @dfuncs from being destroyed until a matching + * call to hb_draw_funcs_destroy() is made. + * + * Return value: (transfer full): + * The referenced #hb_draw_funcs_t. + * + * Since: 4.0.0 + **/ +hb_draw_funcs_t * +hb_draw_funcs_reference (hb_draw_funcs_t *dfuncs) +{ + return hb_object_reference (dfuncs); +} + +/** + * hb_draw_funcs_destroy: (skip) + * @dfuncs: draw functions + * + * Deallocate the @dfuncs. + * Decreases the reference count on @dfuncs by one. If the result is zero, then + * @dfuncs and all associated resources are freed. See hb_draw_funcs_reference(). + * + * Since: 4.0.0 + **/ +void +hb_draw_funcs_destroy (hb_draw_funcs_t *dfuncs) +{ + if (!hb_object_destroy (dfuncs)) return; + + if (dfuncs->destroy) + { +#define HB_DRAW_FUNC_IMPLEMENT(name) \ + if (dfuncs->destroy->name) dfuncs->destroy->name (!dfuncs->user_data ? nullptr : dfuncs->user_data->name); + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } + + hb_free (dfuncs->destroy); + hb_free (dfuncs->user_data); + + hb_free (dfuncs); +} + +/** + * hb_draw_funcs_set_user_data: (skip) + * @dfuncs: The draw-functions structure + * @key: The user-data key + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified draw-functions structure. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 7.0.0 + **/ +hb_bool_t +hb_draw_funcs_set_user_data (hb_draw_funcs_t *dfuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (dfuncs, key, data, destroy, replace); +} + +/** + * hb_draw_funcs_get_user_data: (skip) + * @dfuncs: The draw-functions structure + * @key: The user-data key to query + * + * Fetches the user-data associated with the specified key, + * attached to the specified draw-functions structure. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 7.0.0 + **/ +void * +hb_draw_funcs_get_user_data (const hb_draw_funcs_t *dfuncs, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (dfuncs, key); +} + +/** + * hb_draw_funcs_make_immutable: + * @dfuncs: draw functions + * + * Makes @dfuncs object immutable. + * + * Since: 4.0.0 + **/ +void +hb_draw_funcs_make_immutable (hb_draw_funcs_t *dfuncs) +{ + if (hb_object_is_immutable (dfuncs)) + return; + + hb_object_make_immutable (dfuncs); +} + +/** + * hb_draw_funcs_is_immutable: + * @dfuncs: draw functions + * + * Checks whether @dfuncs is immutable. + * + * Return value: `true` if @dfuncs is immutable, `false` otherwise + * + * Since: 4.0.0 + **/ +hb_bool_t +hb_draw_funcs_is_immutable (hb_draw_funcs_t *dfuncs) +{ + return hb_object_is_immutable (dfuncs); +} + + +/** + * hb_draw_move_to: + * @dfuncs: draw functions + * @draw_data: associated draw data passed by the caller + * @st: current draw state + * @to_x: X component of target point + * @to_y: Y component of target point + * + * Perform a "move-to" draw operation. + * + * Since: 4.0.0 + **/ +void +hb_draw_move_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y) +{ + dfuncs->move_to (draw_data, *st, + to_x, to_y); +} + +/** + * hb_draw_line_to: + * @dfuncs: draw functions + * @draw_data: associated draw data passed by the caller + * @st: current draw state + * @to_x: X component of target point + * @to_y: Y component of target point + * + * Perform a "line-to" draw operation. + * + * Since: 4.0.0 + **/ +void +hb_draw_line_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y) +{ + dfuncs->line_to (draw_data, *st, + to_x, to_y); +} + +/** + * hb_draw_quadratic_to: + * @dfuncs: draw functions + * @draw_data: associated draw data passed by the caller + * @st: current draw state + * @control_x: X component of control point + * @control_y: Y component of control point + * @to_x: X component of target point + * @to_y: Y component of target point + * + * Perform a "quadratic-to" draw operation. + * + * Since: 4.0.0 + **/ +void +hb_draw_quadratic_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control_x, float control_y, + float to_x, float to_y) +{ + dfuncs->quadratic_to (draw_data, *st, + control_x, control_y, + to_x, to_y); +} + +/** + * hb_draw_cubic_to: + * @dfuncs: draw functions + * @draw_data: associated draw data passed by the caller + * @st: current draw state + * @control1_x: X component of first control point + * @control1_y: Y component of first control point + * @control2_x: X component of second control point + * @control2_y: Y component of second control point + * @to_x: X component of target point + * @to_y: Y component of target point + * + * Perform a "cubic-to" draw operation. + * + * Since: 4.0.0 + **/ +void +hb_draw_cubic_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y) +{ + dfuncs->cubic_to (draw_data, *st, + control1_x, control1_y, + control2_x, control2_y, + to_x, to_y); +} + +/** + * hb_draw_close_path: + * @dfuncs: draw functions + * @draw_data: associated draw data passed by the caller + * @st: current draw state + * + * Perform a "close-path" draw operation. + * + * Since: 4.0.0 + **/ +void +hb_draw_close_path (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st) +{ + dfuncs->close_path (draw_data, *st); +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-draw.h b/gfx/harfbuzz/src/hb-draw.h new file mode 100644 index 0000000000..9ca0b4006e --- /dev/null +++ b/gfx/harfbuzz/src/hb-draw.h @@ -0,0 +1,340 @@ +/* + * Copyright © 2019-2020 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_DRAW_H +#define HB_DRAW_H + +#include "hb.h" + +HB_BEGIN_DECLS + + +/** + * hb_draw_state_t + * @path_open: Whether there is an open path + * @path_start_x: X component of the start of current path + * @path_start_y: Y component of the start of current path + * @current_x: X component of current point + * @current_y: Y component of current point + * + * Current drawing state. + * + * Since: 4.0.0 + **/ +typedef struct hb_draw_state_t { + hb_bool_t path_open; + + float path_start_x; + float path_start_y; + + float current_x; + float current_y; + + /*< private >*/ + hb_var_num_t reserved1; + hb_var_num_t reserved2; + hb_var_num_t reserved3; + hb_var_num_t reserved4; + hb_var_num_t reserved5; + hb_var_num_t reserved6; + hb_var_num_t reserved7; +} hb_draw_state_t; + +/** + * HB_DRAW_STATE_DEFAULT: + * + * The default #hb_draw_state_t at the start of glyph drawing. + */ +#define HB_DRAW_STATE_DEFAULT {0, 0.f, 0.f, 0.f, 0.f, {0.}, {0.}, {0.}} + + +/** + * hb_draw_funcs_t: + * + * Glyph draw callbacks. + * + * #hb_draw_move_to_func_t, #hb_draw_line_to_func_t and + * #hb_draw_cubic_to_func_t calls are necessary to be defined but we translate + * #hb_draw_quadratic_to_func_t calls to #hb_draw_cubic_to_func_t if the + * callback isn't defined. + * + * Since: 4.0.0 + **/ + +typedef struct hb_draw_funcs_t hb_draw_funcs_t; + + +/** + * hb_draw_move_to_func_t: + * @dfuncs: draw functions object + * @draw_data: The data accompanying the draw functions in hb_font_draw_glyph() + * @st: current draw state + * @to_x: X component of target point + * @to_y: Y component of target point + * @user_data: User data pointer passed to hb_draw_funcs_set_move_to_func() + * + * A virtual method for the #hb_draw_funcs_t to perform a "move-to" draw + * operation. + * + * Since: 4.0.0 + * + **/ +typedef void (*hb_draw_move_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y, + void *user_data); + +/** + * hb_draw_line_to_func_t: + * @dfuncs: draw functions object + * @draw_data: The data accompanying the draw functions in hb_font_draw_glyph() + * @st: current draw state + * @to_x: X component of target point + * @to_y: Y component of target point + * @user_data: User data pointer passed to hb_draw_funcs_set_line_to_func() + * + * A virtual method for the #hb_draw_funcs_t to perform a "line-to" draw + * operation. + * + * Since: 4.0.0 + * + **/ +typedef void (*hb_draw_line_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y, + void *user_data); + +/** + * hb_draw_quadratic_to_func_t: + * @dfuncs: draw functions object + * @draw_data: The data accompanying the draw functions in hb_font_draw_glyph() + * @st: current draw state + * @control_x: X component of control point + * @control_y: Y component of control point + * @to_x: X component of target point + * @to_y: Y component of target point + * @user_data: User data pointer passed to hb_draw_funcs_set_quadratic_to_func() + * + * A virtual method for the #hb_draw_funcs_t to perform a "quadratic-to" draw + * operation. + * + * Since: 4.0.0 + * + **/ +typedef void (*hb_draw_quadratic_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control_x, float control_y, + float to_x, float to_y, + void *user_data); + +/** + * hb_draw_cubic_to_func_t: + * @dfuncs: draw functions object + * @draw_data: The data accompanying the draw functions in hb_font_draw_glyph() + * @st: current draw state + * @control1_x: X component of first control point + * @control1_y: Y component of first control point + * @control2_x: X component of second control point + * @control2_y: Y component of second control point + * @to_x: X component of target point + * @to_y: Y component of target point + * @user_data: User data pointer passed to hb_draw_funcs_set_cubic_to_func() + * + * A virtual method for the #hb_draw_funcs_t to perform a "cubic-to" draw + * operation. + * + * Since: 4.0.0 + * + **/ +typedef void (*hb_draw_cubic_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y, + void *user_data); + +/** + * hb_draw_close_path_func_t: + * @dfuncs: draw functions object + * @draw_data: The data accompanying the draw functions in hb_font_draw_glyph() + * @st: current draw state + * @user_data: User data pointer passed to hb_draw_funcs_set_close_path_func() + * + * A virtual method for the #hb_draw_funcs_t to perform a "close-path" draw + * operation. + * + * Since: 4.0.0 + * + **/ +typedef void (*hb_draw_close_path_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + void *user_data); + +/** + * hb_draw_funcs_set_move_to_func: + * @dfuncs: draw functions object + * @func: (closure user_data) (destroy destroy) (scope notified): move-to callback + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets move-to callback to the draw functions object. + * + * Since: 4.0.0 + **/ +HB_EXTERN void +hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *dfuncs, + hb_draw_move_to_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_draw_funcs_set_line_to_func: + * @dfuncs: draw functions object + * @func: (closure user_data) (destroy destroy) (scope notified): line-to callback + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets line-to callback to the draw functions object. + * + * Since: 4.0.0 + **/ +HB_EXTERN void +hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *dfuncs, + hb_draw_line_to_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_draw_funcs_set_quadratic_to_func: + * @dfuncs: draw functions object + * @func: (closure user_data) (destroy destroy) (scope notified): quadratic-to callback + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets quadratic-to callback to the draw functions object. + * + * Since: 4.0.0 + **/ +HB_EXTERN void +hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *dfuncs, + hb_draw_quadratic_to_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_draw_funcs_set_cubic_to_func: + * @dfuncs: draw functions + * @func: (closure user_data) (destroy destroy) (scope notified): cubic-to callback + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets cubic-to callback to the draw functions object. + * + * Since: 4.0.0 + **/ +HB_EXTERN void +hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *dfuncs, + hb_draw_cubic_to_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_draw_funcs_set_close_path_func: + * @dfuncs: draw functions object + * @func: (closure user_data) (destroy destroy) (scope notified): close-path callback + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets close-path callback to the draw functions object. + * + * Since: 4.0.0 + **/ +HB_EXTERN void +hb_draw_funcs_set_close_path_func (hb_draw_funcs_t *dfuncs, + hb_draw_close_path_func_t func, + void *user_data, hb_destroy_func_t destroy); + + +HB_EXTERN hb_draw_funcs_t * +hb_draw_funcs_create (void); + +HB_EXTERN hb_draw_funcs_t * +hb_draw_funcs_get_empty (void); + +HB_EXTERN hb_draw_funcs_t * +hb_draw_funcs_reference (hb_draw_funcs_t *dfuncs); + +HB_EXTERN void +hb_draw_funcs_destroy (hb_draw_funcs_t *dfuncs); + +HB_EXTERN hb_bool_t +hb_draw_funcs_set_user_data (hb_draw_funcs_t *dfuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + + +HB_EXTERN void * +hb_draw_funcs_get_user_data (const hb_draw_funcs_t *dfuncs, + hb_user_data_key_t *key); + +HB_EXTERN void +hb_draw_funcs_make_immutable (hb_draw_funcs_t *dfuncs); + +HB_EXTERN hb_bool_t +hb_draw_funcs_is_immutable (hb_draw_funcs_t *dfuncs); + + +HB_EXTERN void +hb_draw_move_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y); + +HB_EXTERN void +hb_draw_line_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y); + +HB_EXTERN void +hb_draw_quadratic_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control_x, float control_y, + float to_x, float to_y); + +HB_EXTERN void +hb_draw_cubic_to (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y); + +HB_EXTERN void +hb_draw_close_path (hb_draw_funcs_t *dfuncs, void *draw_data, + hb_draw_state_t *st); + + +HB_END_DECLS + +#endif /* HB_DRAW_H */ diff --git a/gfx/harfbuzz/src/hb-draw.hh b/gfx/harfbuzz/src/hb-draw.hh new file mode 100644 index 0000000000..768f51a875 --- /dev/null +++ b/gfx/harfbuzz/src/hb-draw.hh @@ -0,0 +1,231 @@ +/* + * Copyright © 2020 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_DRAW_HH +#define HB_DRAW_HH + +#include "hb.hh" + + +/* + * hb_draw_funcs_t + */ + +#define HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS \ + HB_DRAW_FUNC_IMPLEMENT (move_to) \ + HB_DRAW_FUNC_IMPLEMENT (line_to) \ + HB_DRAW_FUNC_IMPLEMENT (quadratic_to) \ + HB_DRAW_FUNC_IMPLEMENT (cubic_to) \ + HB_DRAW_FUNC_IMPLEMENT (close_path) \ + /* ^--- Add new callbacks here */ + +struct hb_draw_funcs_t +{ + hb_object_header_t header; + + struct { +#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_func_t name; + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } func; + + struct { +#define HB_DRAW_FUNC_IMPLEMENT(name) void *name; + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } *user_data; + + struct { +#define HB_DRAW_FUNC_IMPLEMENT(name) hb_destroy_func_t name; + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } *destroy; + + void emit_move_to (void *draw_data, hb_draw_state_t &st, + float to_x, float to_y) + { func.move_to (this, draw_data, &st, + to_x, to_y, + !user_data ? nullptr : user_data->move_to); } + void emit_line_to (void *draw_data, hb_draw_state_t &st, + float to_x, float to_y) + { func.line_to (this, draw_data, &st, + to_x, to_y, + !user_data ? nullptr : user_data->line_to); } + void emit_quadratic_to (void *draw_data, hb_draw_state_t &st, + float control_x, float control_y, + float to_x, float to_y) + { func.quadratic_to (this, draw_data, &st, + control_x, control_y, + to_x, to_y, + !user_data ? nullptr : user_data->quadratic_to); } + void emit_cubic_to (void *draw_data, hb_draw_state_t &st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y) + { func.cubic_to (this, draw_data, &st, + control1_x, control1_y, + control2_x, control2_y, + to_x, to_y, + !user_data ? nullptr : user_data->cubic_to); } + void emit_close_path (void *draw_data, hb_draw_state_t &st) + { func.close_path (this, draw_data, &st, + !user_data ? nullptr : user_data->close_path); } + + + void move_to (void *draw_data, hb_draw_state_t &st, + float to_x, float to_y) + { + if (st.path_open) close_path (draw_data, st); + st.current_x = to_x; + st.current_y = to_y; + } + + void line_to (void *draw_data, hb_draw_state_t &st, + float to_x, float to_y) + { + if (!st.path_open) start_path (draw_data, st); + emit_line_to (draw_data, st, to_x, to_y); + st.current_x = to_x; + st.current_y = to_y; + } + + void + quadratic_to (void *draw_data, hb_draw_state_t &st, + float control_x, float control_y, + float to_x, float to_y) + { + if (!st.path_open) start_path (draw_data, st); + emit_quadratic_to (draw_data, st, control_x, control_y, to_x, to_y); + st.current_x = to_x; + st.current_y = to_y; + } + + void + cubic_to (void *draw_data, hb_draw_state_t &st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y) + { + if (!st.path_open) start_path (draw_data, st); + emit_cubic_to (draw_data, st, control1_x, control1_y, control2_x, control2_y, to_x, to_y); + st.current_x = to_x; + st.current_y = to_y; + } + + void + close_path (void *draw_data, hb_draw_state_t &st) + { + if (st.path_open) + { + if ((st.path_start_x != st.current_x) || (st.path_start_y != st.current_y)) + emit_line_to (draw_data, st, st.path_start_x, st.path_start_y); + emit_close_path (draw_data, st); + } + st.path_open = false; + st.path_start_x = st.current_x = st.path_start_y = st.current_y = 0; + } + + protected: + + void start_path (void *draw_data, hb_draw_state_t &st) + { + assert (!st.path_open); + emit_move_to (draw_data, st, st.current_x, st.current_y); + st.path_open = true; + st.path_start_x = st.current_x; + st.path_start_y = st.current_y; + } +}; +DECLARE_NULL_INSTANCE (hb_draw_funcs_t); + +struct hb_draw_session_t +{ + hb_draw_session_t (hb_draw_funcs_t *funcs_, void *draw_data_, float slant_ = 0.f) + : slant {slant_}, not_slanted {slant == 0.f}, + funcs {funcs_}, draw_data {draw_data_}, st HB_DRAW_STATE_DEFAULT + {} + + ~hb_draw_session_t () { close_path (); } + + void move_to (float to_x, float to_y) + { + if (likely (not_slanted)) + funcs->move_to (draw_data, st, + to_x, to_y); + else + funcs->move_to (draw_data, st, + to_x + to_y * slant, to_y); + } + void line_to (float to_x, float to_y) + { + if (likely (not_slanted)) + funcs->line_to (draw_data, st, + to_x, to_y); + else + funcs->line_to (draw_data, st, + to_x + to_y * slant, to_y); + } + void + quadratic_to (float control_x, float control_y, + float to_x, float to_y) + { + if (likely (not_slanted)) + funcs->quadratic_to (draw_data, st, + control_x, control_y, + to_x, to_y); + else + funcs->quadratic_to (draw_data, st, + control_x + control_y * slant, control_y, + to_x + to_y * slant, to_y); + } + void + cubic_to (float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y) + { + if (likely (not_slanted)) + funcs->cubic_to (draw_data, st, + control1_x, control1_y, + control2_x, control2_y, + to_x, to_y); + else + funcs->cubic_to (draw_data, st, + control1_x + control1_y * slant, control1_y, + control2_x + control2_y * slant, control2_y, + to_x + to_y * slant, to_y); + } + void close_path () + { + funcs->close_path (draw_data, st); + } + + protected: + float slant; + bool not_slanted; + hb_draw_funcs_t *funcs; + void *draw_data; + hb_draw_state_t st; +}; + +#endif /* HB_DRAW_HH */ diff --git a/gfx/harfbuzz/src/hb-face-builder.cc b/gfx/harfbuzz/src/hb-face-builder.cc new file mode 100644 index 0000000000..84b14d28d6 --- /dev/null +++ b/gfx/harfbuzz/src/hb-face-builder.cc @@ -0,0 +1,246 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-face.hh" + +#include "hb-map.hh" +#include "hb-open-file.hh" +#include "hb-serialize.hh" + + +/* + * face-builder: A face that has add_table(). + */ + +struct face_table_info_t +{ + hb_blob_t* data; + signed order; +}; + +struct hb_face_builder_data_t +{ + hb_hashmap_t tables; +}; + +static int compare_entries (const void* pa, const void* pb) +{ + const auto& a = * (const hb_pair_t *) pa; + const auto& b = * (const hb_pair_t *) pb; + + /* Order by blob size first (smallest to largest) and then table tag */ + + if (a.second.order != b.second.order) + return a.second.order < b.second.order ? -1 : +1; + + if (a.second.data->length != b.second.data->length) + return a.second.data->length < b.second.data->length ? -1 : +1; + + return a.first < b.first ? -1 : a.first == b.first ? 0 : +1; +} + +static hb_face_builder_data_t * +_hb_face_builder_data_create () +{ + hb_face_builder_data_t *data = (hb_face_builder_data_t *) hb_calloc (1, sizeof (hb_face_builder_data_t)); + if (unlikely (!data)) + return nullptr; + + data->tables.init (); + + return data; +} + +static void +_hb_face_builder_data_destroy (void *user_data) +{ + hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data; + + for (auto info : data->tables.values()) + hb_blob_destroy (info.data); + + data->tables.fini (); + + hb_free (data); +} + +static hb_blob_t * +_hb_face_builder_data_reference_blob (hb_face_builder_data_t *data) +{ + + unsigned int table_count = data->tables.get_population (); + unsigned int face_length = table_count * 16 + 12; + + for (auto info : data->tables.values()) + face_length += hb_ceil_to_4 (hb_blob_get_length (info.data)); + + char *buf = (char *) hb_malloc (face_length); + if (unlikely (!buf)) + return nullptr; + + hb_serialize_context_t c (buf, face_length); + c.propagate_error (data->tables); + OT::OpenTypeFontFile *f = c.start_serialize (); + + bool is_cff = (data->tables.has (HB_TAG ('C','F','F',' ')) + || data->tables.has (HB_TAG ('C','F','F','2'))); + hb_tag_t sfnt_tag = is_cff ? OT::OpenTypeFontFile::CFFTag : OT::OpenTypeFontFile::TrueTypeTag; + + // Sort the tags so that produced face is deterministic. + hb_vector_t> sorted_entries; + data->tables.iter () | hb_sink (sorted_entries); + if (unlikely (sorted_entries.in_error ())) + { + hb_free (buf); + return nullptr; + } + + sorted_entries.qsort (compare_entries); + + bool ret = f->serialize_single (&c, + sfnt_tag, + + sorted_entries.iter() + | hb_map ([&] (hb_pair_t _) { + return hb_pair_t (_.first, _.second.data); + })); + + c.end_serialize (); + + if (unlikely (!ret)) + { + hb_free (buf); + return nullptr; + } + + return hb_blob_create (buf, face_length, HB_MEMORY_MODE_WRITABLE, buf, hb_free); +} + +static hb_blob_t * +_hb_face_builder_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data; + + if (!tag) + return _hb_face_builder_data_reference_blob (data); + + return hb_blob_reference (data->tables[tag].data); +} + + +/** + * hb_face_builder_create: + * + * Creates a #hb_face_t that can be used with hb_face_builder_add_table(). + * After tables are added to the face, it can be compiled to a binary + * font file by calling hb_face_reference_blob(). + * + * Return value: (transfer full): New face. + * + * Since: 1.9.0 + **/ +hb_face_t * +hb_face_builder_create () +{ + hb_face_builder_data_t *data = _hb_face_builder_data_create (); + if (unlikely (!data)) return hb_face_get_empty (); + + return hb_face_create_for_tables (_hb_face_builder_reference_table, + data, + _hb_face_builder_data_destroy); +} + +/** + * hb_face_builder_add_table: + * @face: A face object created with hb_face_builder_create() + * @tag: The #hb_tag_t of the table to add + * @blob: The blob containing the table data to add + * + * Add table for @tag with data provided by @blob to the face. @face must + * be created using hb_face_builder_create(). + * + * Since: 1.9.0 + **/ +hb_bool_t +hb_face_builder_add_table (hb_face_t *face, hb_tag_t tag, hb_blob_t *blob) +{ + if (unlikely (face->destroy != (hb_destroy_func_t) _hb_face_builder_data_destroy)) + return false; + + if (tag == HB_MAP_VALUE_INVALID) + return false; + + hb_face_builder_data_t *data = (hb_face_builder_data_t *) face->user_data; + + hb_blob_t* previous = data->tables.get (tag).data; + if (!data->tables.set (tag, face_table_info_t {hb_blob_reference (blob), -1})) + { + hb_blob_destroy (blob); + return false; + } + + hb_blob_destroy (previous); + return true; +} + +/** + * hb_face_builder_sort_tables: + * @face: A face object created with hb_face_builder_create() + * @tags: (array zero-terminated=1): ordered list of table tags terminated by + * %HB_TAG_NONE + * + * Set the ordering of tables for serialization. Any tables not + * specified in the tags list will be ordered after the tables in + * tags, ordered by the default sort ordering. + * + * Since: 5.3.0 + **/ +void +hb_face_builder_sort_tables (hb_face_t *face, + const hb_tag_t *tags) +{ + if (unlikely (face->destroy != (hb_destroy_func_t) _hb_face_builder_data_destroy)) + return; + + hb_face_builder_data_t *data = (hb_face_builder_data_t *) face->user_data; + + // Sort all unspecified tables after any specified tables. + for (auto& info : data->tables.values_ref()) + info.order = (unsigned) -1; + + signed order = 0; + for (const hb_tag_t* tag = tags; + *tag; + tag++) + { + face_table_info_t* info; + if (!data->tables.has (*tag, &info)) continue; + info->order = order++; + } +} diff --git a/gfx/harfbuzz/src/hb-face.cc b/gfx/harfbuzz/src/hb-face.cc new file mode 100644 index 0000000000..e340710586 --- /dev/null +++ b/gfx/harfbuzz/src/hb-face.cc @@ -0,0 +1,664 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-face.hh" +#include "hb-blob.hh" +#include "hb-open-file.hh" +#include "hb-ot-face.hh" +#include "hb-ot-cmap-table.hh" + + +/** + * SECTION:hb-face + * @title: hb-face + * @short_description: Font face objects + * @include: hb.h + * + * A font face is an object that represents a single face from within a + * font family. + * + * More precisely, a font face represents a single face in a binary font file. + * Font faces are typically built from a binary blob and a face index. + * Font faces are used to create fonts. + * + * A font face can be created from a binary blob using hb_face_create(). + * The face index is used to select a face from a binary blob that contains + * multiple faces. For example, a binary blob that contains both a regular + * and a bold face can be used to create two font faces, one for each face + * index. + **/ + + +/** + * hb_face_count: + * @blob: a blob. + * + * Fetches the number of faces in a blob. + * + * Return value: Number of faces in @blob + * + * Since: 1.7.7 + **/ +unsigned int +hb_face_count (hb_blob_t *blob) +{ + if (unlikely (!blob)) + return 0; + + /* TODO We shouldn't be sanitizing blob. Port to run sanitizer and return if not sane. */ + /* Make API signature const after. */ + hb_blob_t *sanitized = hb_sanitize_context_t ().sanitize_blob (hb_blob_reference (blob)); + const OT::OpenTypeFontFile& ot = *sanitized->as (); + unsigned int ret = ot.get_face_count (); + hb_blob_destroy (sanitized); + + return ret; +} + +/* + * hb_face_t + */ + +DEFINE_NULL_INSTANCE (hb_face_t) = +{ + HB_OBJECT_HEADER_STATIC, + + nullptr, /* reference_table_func */ + nullptr, /* user_data */ + nullptr, /* destroy */ + + 0, /* index */ + 1000, /* upem */ + 0, /* num_glyphs */ + + /* Zero for the rest is fine. */ +}; + + +/** + * hb_face_create_for_tables: + * @reference_table_func: (closure user_data) (destroy destroy) (scope notified): Table-referencing function + * @user_data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * + * Variant of hb_face_create(), built for those cases where it is more + * convenient to provide data for individual tables instead of the whole font + * data. With the caveat that hb_face_get_table_tags() does not currently work + * with faces created this way. + * + * Creates a new face object from the specified @user_data and @reference_table_func, + * with the @destroy callback. + * + * Return value: (transfer full): The new face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_face_create_for_tables (hb_reference_table_func_t reference_table_func, + void *user_data, + hb_destroy_func_t destroy) +{ + hb_face_t *face; + + if (!reference_table_func || !(face = hb_object_create ())) { + if (destroy) + destroy (user_data); + return hb_face_get_empty (); + } + + face->reference_table_func = reference_table_func; + face->user_data = user_data; + face->destroy = destroy; + + face->num_glyphs = -1; + + face->data.init0 (face); + face->table.init0 (face); + + return face; +} + + +typedef struct hb_face_for_data_closure_t { + hb_blob_t *blob; + uint16_t index; +} hb_face_for_data_closure_t; + +static hb_face_for_data_closure_t * +_hb_face_for_data_closure_create (hb_blob_t *blob, unsigned int index) +{ + hb_face_for_data_closure_t *closure; + + closure = (hb_face_for_data_closure_t *) hb_calloc (1, sizeof (hb_face_for_data_closure_t)); + if (unlikely (!closure)) + return nullptr; + + closure->blob = blob; + closure->index = (uint16_t) (index & 0xFFFFu); + + return closure; +} + +static void +_hb_face_for_data_closure_destroy (void *data) +{ + hb_face_for_data_closure_t *closure = (hb_face_for_data_closure_t *) data; + + hb_blob_destroy (closure->blob); + hb_free (closure); +} + +static hb_blob_t * +_hb_face_for_data_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) user_data; + + if (tag == HB_TAG_NONE) + return hb_blob_reference (data->blob); + + const OT::OpenTypeFontFile &ot_file = *data->blob->as (); + unsigned int base_offset; + const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index, &base_offset); + + const OT::OpenTypeTable &table = ot_face.get_table_by_tag (tag); + + hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, base_offset + table.offset, table.length); + + return blob; +} + +/** + * hb_face_create: + * @blob: #hb_blob_t to work upon + * @index: The index of the face within @blob + * + * Constructs a new face object from the specified blob and + * a face index into that blob. + * + * The face index is used for blobs of file formats such as TTC and + * DFont that can contain more than one face. Face indices within + * such collections are zero-based. + * + * Note: If the blob font format is not a collection, @index + * is ignored. Otherwise, only the lower 16-bits of @index are used. + * The unmodified @index can be accessed via hb_face_get_index(). + * + * Note: The high 16-bits of @index, if non-zero, are used by + * hb_font_create() to load named-instances in variable fonts. See + * hb_font_create() for details. + * + * Return value: (transfer full): The new face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_face_create (hb_blob_t *blob, + unsigned int index) +{ + hb_face_t *face; + + if (unlikely (!blob)) + blob = hb_blob_get_empty (); + + blob = hb_sanitize_context_t ().sanitize_blob (hb_blob_reference (blob)); + + hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (blob, index); + + if (unlikely (!closure)) + { + hb_blob_destroy (blob); + return hb_face_get_empty (); + } + + face = hb_face_create_for_tables (_hb_face_for_data_reference_table, + closure, + _hb_face_for_data_closure_destroy); + + face->index = index; + + return face; +} + +/** + * hb_face_get_empty: + * + * Fetches the singleton empty face object. + * + * Return value: (transfer full): The empty face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_face_get_empty () +{ + return const_cast (&Null (hb_face_t)); +} + + +/** + * hb_face_reference: (skip) + * @face: A face object + * + * Increases the reference count on a face object. + * + * Return value: The @face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_face_reference (hb_face_t *face) +{ + return hb_object_reference (face); +} + +/** + * hb_face_destroy: (skip) + * @face: A face object + * + * Decreases the reference count on a face object. When the + * reference count reaches zero, the face is destroyed, + * freeing all memory. + * + * Since: 0.9.2 + **/ +void +hb_face_destroy (hb_face_t *face) +{ + if (!hb_object_destroy (face)) return; + +#ifndef HB_NO_SHAPER + for (hb_face_t::plan_node_t *node = face->shape_plans; node; ) + { + hb_face_t::plan_node_t *next = node->next; + hb_shape_plan_destroy (node->shape_plan); + hb_free (node); + node = next; + } +#endif + + face->data.fini (); + face->table.fini (); + + if (face->destroy) + face->destroy (face->user_data); + + hb_free (face); +} + +/** + * hb_face_set_user_data: (skip) + * @face: A face object + * @key: The user-data key to set + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the given face object. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_face_set_user_data (hb_face_t *face, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (face, key, data, destroy, replace); +} + +/** + * hb_face_get_user_data: (skip) + * @face: A face object + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified face object. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 0.9.2 + **/ +void * +hb_face_get_user_data (const hb_face_t *face, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (face, key); +} + +/** + * hb_face_make_immutable: + * @face: A face object + * + * Makes the given face object immutable. + * + * Since: 0.9.2 + **/ +void +hb_face_make_immutable (hb_face_t *face) +{ + if (hb_object_is_immutable (face)) + return; + + hb_object_make_immutable (face); +} + +/** + * hb_face_is_immutable: + * @face: A face object + * + * Tests whether the given face object is immutable. + * + * Return value: `true` is @face is immutable, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_face_is_immutable (const hb_face_t *face) +{ + return hb_object_is_immutable (face); +} + + +/** + * hb_face_reference_table: + * @face: A face object + * @tag: The #hb_tag_t of the table to query + * + * Fetches a reference to the specified table within + * the specified face. + * + * Return value: (transfer full): A pointer to the @tag table within @face + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_face_reference_table (const hb_face_t *face, + hb_tag_t tag) +{ + if (unlikely (tag == HB_TAG_NONE)) + return hb_blob_get_empty (); + + return face->reference_table (tag); +} + +/** + * hb_face_reference_blob: + * @face: A face object + * + * Fetches a pointer to the binary blob that contains the + * specified face. Returns an empty blob if referencing face data is not + * possible. + * + * Return value: (transfer full): A pointer to the blob for @face + * + * Since: 0.9.2 + **/ +hb_blob_t * +hb_face_reference_blob (hb_face_t *face) +{ + return face->reference_table (HB_TAG_NONE); +} + +/** + * hb_face_set_index: + * @face: A face object + * @index: The index to assign + * + * Assigns the specified face-index to @face. Fails if the + * face is immutable. + * + * Note: changing the index has no effect on the face itself + * This only changes the value returned by hb_face_get_index(). + * + * Since: 0.9.2 + **/ +void +hb_face_set_index (hb_face_t *face, + unsigned int index) +{ + if (hb_object_is_immutable (face)) + return; + + face->index = index; +} + +/** + * hb_face_get_index: + * @face: A face object + * + * Fetches the face-index corresponding to the given face. + * + * Note: face indices within a collection are zero-based. + * + * Return value: The index of @face. + * + * Since: 0.9.2 + **/ +unsigned int +hb_face_get_index (const hb_face_t *face) +{ + return face->index; +} + +/** + * hb_face_set_upem: + * @face: A face object + * @upem: The units-per-em value to assign + * + * Sets the units-per-em (upem) for a face object to the specified value. + * + * This API is used in rare circumstances. + * + * Since: 0.9.2 + **/ +void +hb_face_set_upem (hb_face_t *face, + unsigned int upem) +{ + if (hb_object_is_immutable (face)) + return; + + face->upem = upem; +} + +/** + * hb_face_get_upem: + * @face: A face object + * + * Fetches the units-per-em (UPEM) value of the specified face object. + * + * Typical UPEM values for fonts are 1000, or 2048, but any value + * in between 16 and 16,384 is allowed for OpenType fonts. + * + * Return value: The upem value of @face + * + * Since: 0.9.2 + **/ +unsigned int +hb_face_get_upem (const hb_face_t *face) +{ + return face->get_upem (); +} + +/** + * hb_face_set_glyph_count: + * @face: A face object + * @glyph_count: The glyph-count value to assign + * + * Sets the glyph count for a face object to the specified value. + * + * This API is used in rare circumstances. + * + * Since: 0.9.7 + **/ +void +hb_face_set_glyph_count (hb_face_t *face, + unsigned int glyph_count) +{ + if (hb_object_is_immutable (face)) + return; + + face->num_glyphs = glyph_count; +} + +/** + * hb_face_get_glyph_count: + * @face: A face object + * + * Fetches the glyph-count value of the specified face object. + * + * Return value: The glyph-count value of @face + * + * Since: 0.9.7 + **/ +unsigned int +hb_face_get_glyph_count (const hb_face_t *face) +{ + return face->get_num_glyphs (); +} + +/** + * hb_face_get_table_tags: + * @face: A face object + * @start_offset: The index of first table tag to retrieve + * @table_count: (inout): Input = the maximum number of table tags to return; + * Output = the actual number of table tags returned (may be zero) + * @table_tags: (out) (array length=table_count): The array of table tags found + * + * Fetches a list of all table tags for a face, if possible. The list returned will + * begin at the offset provided + * + * Return value: Total number of tables, or zero if it is not possible to list + * + * Since: 1.6.0 + **/ +unsigned int +hb_face_get_table_tags (const hb_face_t *face, + unsigned int start_offset, + unsigned int *table_count, /* IN/OUT */ + hb_tag_t *table_tags /* OUT */) +{ + if (face->destroy != (hb_destroy_func_t) _hb_face_for_data_closure_destroy) + { + if (table_count) + *table_count = 0; + return 0; + } + + hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) face->user_data; + + const OT::OpenTypeFontFile &ot_file = *data->blob->as (); + const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index); + + return ot_face.get_table_tags (start_offset, table_count, table_tags); +} + + +/* + * Character set. + */ + + +#ifndef HB_NO_FACE_COLLECT_UNICODES +/** + * hb_face_collect_unicodes: + * @face: A face object + * @out: (out): The set to add Unicode characters to + * + * Collects all of the Unicode characters covered by @face and adds + * them to the #hb_set_t set @out. + * + * Since: 1.9.0 + */ +void +hb_face_collect_unicodes (hb_face_t *face, + hb_set_t *out) +{ + face->table.cmap->collect_unicodes (out, face->get_num_glyphs ()); +} +/** + * hb_face_collect_nominal_glyph_mapping: + * @face: A face object + * @mapping: (out): The map to add Unicode-to-glyph mapping to + * @unicodes: (nullable) (out): The set to add Unicode characters to, or `NULL` + * + * Collects the mapping from Unicode characters to nominal glyphs of the @face, + * and optionally all of the Unicode characters covered by @face. + * + * Since: 7.0.0 + */ +void +hb_face_collect_nominal_glyph_mapping (hb_face_t *face, + hb_map_t *mapping, + hb_set_t *unicodes) +{ + hb_set_t stack_unicodes; + if (!unicodes) + unicodes = &stack_unicodes; + face->table.cmap->collect_mapping (unicodes, mapping, face->get_num_glyphs ()); +} +/** + * hb_face_collect_variation_selectors: + * @face: A face object + * @out: (out): The set to add Variation Selector characters to + * + * Collects all Unicode "Variation Selector" characters covered by @face and adds + * them to the #hb_set_t set @out. + * + * Since: 1.9.0 + */ +void +hb_face_collect_variation_selectors (hb_face_t *face, + hb_set_t *out) +{ + face->table.cmap->collect_variation_selectors (out); +} +/** + * hb_face_collect_variation_unicodes: + * @face: A face object + * @variation_selector: The Variation Selector to query + * @out: (out): The set to add Unicode characters to + * + * Collects all Unicode characters for @variation_selector covered by @face and adds + * them to the #hb_set_t set @out. + * + * Since: 1.9.0 + */ +void +hb_face_collect_variation_unicodes (hb_face_t *face, + hb_codepoint_t variation_selector, + hb_set_t *out) +{ + face->table.cmap->collect_variation_unicodes (variation_selector, out); +} +#endif diff --git a/gfx/harfbuzz/src/hb-face.h b/gfx/harfbuzz/src/hb-face.h new file mode 100644 index 0000000000..2e54ccf13b --- /dev/null +++ b/gfx/harfbuzz/src/hb-face.h @@ -0,0 +1,187 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_FACE_H +#define HB_FACE_H + +#include "hb-common.h" +#include "hb-blob.h" +#include "hb-map.h" +#include "hb-set.h" + +HB_BEGIN_DECLS + + +HB_EXTERN unsigned int +hb_face_count (hb_blob_t *blob); + + +/* + * hb_face_t + */ + +/** + * hb_face_t: + * + * Data type for holding font faces. + * + **/ +typedef struct hb_face_t hb_face_t; + +HB_EXTERN hb_face_t * +hb_face_create (hb_blob_t *blob, + unsigned int index); + +/** + * hb_reference_table_func_t: + * @face: an #hb_face_t to reference table for + * @tag: the tag of the table to reference + * @user_data: User data pointer passed by the caller + * + * Callback function for hb_face_create_for_tables(). + * + * Return value: (transfer full): A pointer to the @tag table within @face + * + * Since: 0.9.2 + */ + +typedef hb_blob_t * (*hb_reference_table_func_t) (hb_face_t *face, hb_tag_t tag, void *user_data); + +/* calls destroy() when not needing user_data anymore */ +HB_EXTERN hb_face_t * +hb_face_create_for_tables (hb_reference_table_func_t reference_table_func, + void *user_data, + hb_destroy_func_t destroy); + +HB_EXTERN hb_face_t * +hb_face_get_empty (void); + +HB_EXTERN hb_face_t * +hb_face_reference (hb_face_t *face); + +HB_EXTERN void +hb_face_destroy (hb_face_t *face); + +HB_EXTERN hb_bool_t +hb_face_set_user_data (hb_face_t *face, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + +HB_EXTERN void * +hb_face_get_user_data (const hb_face_t *face, + hb_user_data_key_t *key); + +HB_EXTERN void +hb_face_make_immutable (hb_face_t *face); + +HB_EXTERN hb_bool_t +hb_face_is_immutable (const hb_face_t *face); + + +HB_EXTERN hb_blob_t * +hb_face_reference_table (const hb_face_t *face, + hb_tag_t tag); + +HB_EXTERN hb_blob_t * +hb_face_reference_blob (hb_face_t *face); + +HB_EXTERN void +hb_face_set_index (hb_face_t *face, + unsigned int index); + +HB_EXTERN unsigned int +hb_face_get_index (const hb_face_t *face); + +HB_EXTERN void +hb_face_set_upem (hb_face_t *face, + unsigned int upem); + +HB_EXTERN unsigned int +hb_face_get_upem (const hb_face_t *face); + +HB_EXTERN void +hb_face_set_glyph_count (hb_face_t *face, + unsigned int glyph_count); + +HB_EXTERN unsigned int +hb_face_get_glyph_count (const hb_face_t *face); + +HB_EXTERN unsigned int +hb_face_get_table_tags (const hb_face_t *face, + unsigned int start_offset, + unsigned int *table_count, /* IN/OUT */ + hb_tag_t *table_tags /* OUT */); + + +/* + * Character set. + */ + +HB_EXTERN void +hb_face_collect_unicodes (hb_face_t *face, + hb_set_t *out); + +HB_EXTERN void +hb_face_collect_nominal_glyph_mapping (hb_face_t *face, + hb_map_t *mapping, + hb_set_t *unicodes); + +HB_EXTERN void +hb_face_collect_variation_selectors (hb_face_t *face, + hb_set_t *out); + +HB_EXTERN void +hb_face_collect_variation_unicodes (hb_face_t *face, + hb_codepoint_t variation_selector, + hb_set_t *out); + + +/* + * Builder face. + */ + +HB_EXTERN hb_face_t * +hb_face_builder_create (void); + +HB_EXTERN hb_bool_t +hb_face_builder_add_table (hb_face_t *face, + hb_tag_t tag, + hb_blob_t *blob); + +HB_EXTERN void +hb_face_builder_sort_tables (hb_face_t *face, + const hb_tag_t *tags); + + +HB_END_DECLS + +#endif /* HB_FACE_H */ diff --git a/gfx/harfbuzz/src/hb-face.hh b/gfx/harfbuzz/src/hb-face.hh new file mode 100644 index 0000000000..aff3ff0d07 --- /dev/null +++ b/gfx/harfbuzz/src/hb-face.hh @@ -0,0 +1,111 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_FACE_HH +#define HB_FACE_HH + +#include "hb.hh" + +#include "hb-shaper.hh" +#include "hb-shape-plan.hh" +#include "hb-ot-face.hh" + + +/* + * hb_face_t + */ + +#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INSTANTIATE_SHAPERS(shaper, face); +#include "hb-shaper-list.hh" +#undef HB_SHAPER_IMPLEMENT + +struct hb_face_t +{ + hb_object_header_t header; + + hb_reference_table_func_t reference_table_func; + void *user_data; + hb_destroy_func_t destroy; + + unsigned int index; /* Face index in a collection, zero-based. */ + mutable hb_atomic_int_t upem; /* Units-per-EM. */ + mutable hb_atomic_int_t num_glyphs; /* Number of glyphs. */ + + hb_shaper_object_dataset_t data;/* Various shaper data. */ + hb_ot_face_t table; /* All the face's tables. */ + + /* Cache */ + struct plan_node_t + { + hb_shape_plan_t *shape_plan; + plan_node_t *next; + }; +#ifndef HB_NO_SHAPER + hb_atomic_ptr_t shape_plans; +#endif + + hb_blob_t *reference_table (hb_tag_t tag) const + { + hb_blob_t *blob; + + if (unlikely (!reference_table_func)) + return hb_blob_get_empty (); + + blob = reference_table_func (/*Oh, well.*/const_cast (this), tag, user_data); + if (unlikely (!blob)) + return hb_blob_get_empty (); + + return blob; + } + + unsigned int get_upem () const + { + unsigned int ret = upem; + if (unlikely (!ret)) + { + return load_upem (); + } + return ret; + } + + unsigned int get_num_glyphs () const + { + unsigned int ret = num_glyphs; + if (unlikely (ret == UINT_MAX)) + return load_num_glyphs (); + return ret; + } + + private: + HB_INTERNAL unsigned int load_upem () const; + HB_INTERNAL unsigned int load_num_glyphs () const; +}; +DECLARE_NULL_INSTANCE (hb_face_t); + + +#endif /* HB_FACE_HH */ diff --git a/gfx/harfbuzz/src/hb-fallback-shape.cc b/gfx/harfbuzz/src/hb-fallback-shape.cc new file mode 100644 index 0000000000..c54ad8764b --- /dev/null +++ b/gfx/harfbuzz/src/hb-fallback-shape.cc @@ -0,0 +1,115 @@ +/* + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb-shaper-impl.hh" + +#ifndef HB_NO_FALLBACK_SHAPE + +/* + * shaper face data + */ + +struct hb_fallback_face_data_t {}; + +hb_fallback_face_data_t * +_hb_fallback_shaper_face_data_create (hb_face_t *face HB_UNUSED) +{ + return (hb_fallback_face_data_t *) HB_SHAPER_DATA_SUCCEEDED; +} + +void +_hb_fallback_shaper_face_data_destroy (hb_fallback_face_data_t *data HB_UNUSED) +{ +} + + +/* + * shaper font data + */ + +struct hb_fallback_font_data_t {}; + +hb_fallback_font_data_t * +_hb_fallback_shaper_font_data_create (hb_font_t *font HB_UNUSED) +{ + return (hb_fallback_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; +} + +void +_hb_fallback_shaper_font_data_destroy (hb_fallback_font_data_t *data HB_UNUSED) +{ +} + + +/* + * shaper + */ + +hb_bool_t +_hb_fallback_shape (hb_shape_plan_t *shape_plan HB_UNUSED, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features HB_UNUSED, + unsigned int num_features HB_UNUSED) +{ + hb_codepoint_t space; + bool has_space = (bool) font->get_nominal_glyph (' ', &space); + + buffer->clear_positions (); + + hb_direction_t direction = buffer->props.direction; + hb_unicode_funcs_t *unicode = buffer->unicode; + unsigned int count = buffer->len; + hb_glyph_info_t *info = buffer->info; + hb_glyph_position_t *pos = buffer->pos; + for (unsigned int i = 0; i < count; i++) + { + if (has_space && unicode->is_default_ignorable (info[i].codepoint)) { + info[i].codepoint = space; + pos[i].x_advance = 0; + pos[i].y_advance = 0; + continue; + } + (void) font->get_nominal_glyph (info[i].codepoint, &info[i].codepoint); + font->get_glyph_advance_for_direction (info[i].codepoint, + direction, + &pos[i].x_advance, + &pos[i].y_advance); + font->subtract_glyph_origin_for_direction (info[i].codepoint, + direction, + &pos[i].x_offset, + &pos[i].y_offset); + } + + if (HB_DIRECTION_IS_BACKWARD (direction)) + hb_buffer_reverse (buffer); + + buffer->clear_glyph_flags (); + + return true; +} + +#endif diff --git a/gfx/harfbuzz/src/hb-features.h.in b/gfx/harfbuzz/src/hb-features.h.in new file mode 100644 index 0000000000..d85749ca9e --- /dev/null +++ b/gfx/harfbuzz/src/hb-features.h.in @@ -0,0 +1,112 @@ +/* + * Copyright © 2022 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_FEATURES_H +#define HB_FEATURES_H + +HB_BEGIN_DECLS + +/** + * SECTION: hb-features + * @title: hb-features + * @short_description: Feature detection + * @include: hb-features.h + * + * Macros for detecting optional HarfBuzz features at build time. + **/ + +/** + * HB_HAS_CAIRO: + * + * Defined if Harfbuzz has been built with cairo support. + */ +#mesondefine HB_HAS_CAIRO + +/** + * HB_HAS_CORETEXT: + * + * Defined if Harfbuzz has been built with CoreText support. + */ +#mesondefine HB_HAS_CORETEXT + +/** + * HB_HAS_DIRECTWRITE: + * + * Defined if Harfbuzz has been built with DirectWrite support. + */ +#mesondefine HB_HAS_DIRECTWRITE + +/** + * HB_HAS_FREETYPE: + * + * Defined if Harfbuzz has been built with Freetype support. + */ +#mesondefine HB_HAS_FREETYPE + +/** + * HB_HAS_GDI: + * + * Defined if Harfbuzz has been built with GDI support. + */ +#mesondefine HB_HAS_GDI + +/** + * HB_HAS_GLIB: + * + * Defined if Harfbuzz has been built with GLib support. + */ +#mesondefine HB_HAS_GLIB + +/** + * HB_HAS_GOBJECT: + * + * Defined if Harfbuzz has been built with GObject support. + */ +#mesondefine HB_HAS_GOBJECT + +/** + * HB_HAS_GRAPHITE: + * + * Defined if Harfbuzz has been built with Graphite support. + */ +#mesondefine HB_HAS_GRAPHITE + +/** + * HB_HAS_ICU: + * + * Defined if Harfbuzz has been built with ICU support. + */ +#mesondefine HB_HAS_ICU + +/** + * HB_HAS_UNISCRIBE: + * + * Defined if Harfbuzz has been built with Uniscribe support. + */ +#mesondefine HB_HAS_UNISCRIBE + + +HB_END_DECLS + +#endif /* HB_FEATURES_H */ diff --git a/gfx/harfbuzz/src/hb-font.cc b/gfx/harfbuzz/src/hb-font.cc new file mode 100644 index 0000000000..688513112a --- /dev/null +++ b/gfx/harfbuzz/src/hb-font.cc @@ -0,0 +1,3068 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-font.hh" +#include "hb-draw.hh" +#include "hb-paint.hh" +#include "hb-machinery.hh" + +#include "hb-ot.h" + +#include "hb-ot-var-avar-table.hh" +#include "hb-ot-var-fvar-table.hh" + + +/** + * SECTION:hb-font + * @title: hb-font + * @short_description: Font objects + * @include: hb.h + * + * Functions for working with font objects. + * + * A font object represents a font face at a specific size and with + * certain other parameters (pixels-per-em, points-per-em, variation + * settings) specified. Font objects are created from font face + * objects, and are used as input to hb_shape(), among other things. + * + * Client programs can optionally pass in their own functions that + * implement the basic, lower-level queries of font objects. This set + * of font functions is defined by the virtual methods in + * #hb_font_funcs_t. + * + * HarfBuzz provides a built-in set of lightweight default + * functions for each method in #hb_font_funcs_t. + * + * The default font functions are implemented in terms of the + * #hb_font_funcs_t methods of the parent font object. This allows + * client programs to override only the methods they need to, and + * otherwise inherit the parent font's implementation, if any. + **/ + + +/* + * hb_font_funcs_t + */ + +static hb_bool_t +hb_font_get_font_h_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_memset (extents, 0, sizeof (*extents)); + return false; +} + +static hb_bool_t +hb_font_get_font_h_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_font_h_extents (extents); + if (ret) { + extents->ascender = font->parent_scale_y_distance (extents->ascender); + extents->descender = font->parent_scale_y_distance (extents->descender); + extents->line_gap = font->parent_scale_y_distance (extents->line_gap); + } + return ret; +} + +static hb_bool_t +hb_font_get_font_v_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_memset (extents, 0, sizeof (*extents)); + return false; +} + +static hb_bool_t +hb_font_get_font_v_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_font_v_extents (extents); + if (ret) { + extents->ascender = font->parent_scale_x_distance (extents->ascender); + extents->descender = font->parent_scale_x_distance (extents->descender); + extents->line_gap = font->parent_scale_x_distance (extents->line_gap); + } + return ret; +} + +static hb_bool_t +hb_font_get_nominal_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t unicode HB_UNUSED, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} + +static hb_bool_t +hb_font_get_nominal_glyph_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + if (font->has_nominal_glyphs_func_set ()) + { + return font->get_nominal_glyphs (1, &unicode, 0, glyph, 0); + } + return font->parent->get_nominal_glyph (unicode, glyph); +} + +#define hb_font_get_nominal_glyphs_nil hb_font_get_nominal_glyphs_default + +static unsigned int +hb_font_get_nominal_glyphs_default (hb_font_t *font, + void *font_data HB_UNUSED, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + void *user_data HB_UNUSED) +{ + if (font->has_nominal_glyph_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + if (!font->get_nominal_glyph (*first_unicode, first_glyph)) + return i; + + first_unicode = &StructAtOffsetUnaligned (first_unicode, unicode_stride); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + } + return count; + } + + return font->parent->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride); +} + +static hb_bool_t +hb_font_get_variation_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t unicode HB_UNUSED, + hb_codepoint_t variation_selector HB_UNUSED, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} + +static hb_bool_t +hb_font_get_variation_glyph_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + return font->parent->get_variation_glyph (unicode, variation_selector, glyph); +} + + +static hb_position_t +hb_font_get_glyph_h_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + return font->x_scale; +} + +static hb_position_t +hb_font_get_glyph_h_advance_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_h_advances_func_set ()) + { + hb_position_t ret; + font->get_glyph_h_advances (1, &glyph, 0, &ret, 0); + return ret; + } + return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph)); +} + +static hb_position_t +hb_font_get_glyph_v_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + /* TODO use font_extents.ascender+descender */ + return font->y_scale; +} + +static hb_position_t +hb_font_get_glyph_v_advance_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_v_advances_func_set ()) + { + hb_position_t ret; + font->get_glyph_v_advances (1, &glyph, 0, &ret, 0); + return ret; + } + return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph)); +} + +#define hb_font_get_glyph_h_advances_nil hb_font_get_glyph_h_advances_default + +static void +hb_font_get_glyph_h_advances_default (hb_font_t* font, + void* font_data HB_UNUSED, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_h_advance_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->get_glyph_h_advance (*first_glyph); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + return; + } + + font->parent->get_glyph_h_advances (count, + first_glyph, glyph_stride, + first_advance, advance_stride); + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->parent_scale_x_distance (*first_advance); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } +} + +#define hb_font_get_glyph_v_advances_nil hb_font_get_glyph_v_advances_default +static void +hb_font_get_glyph_v_advances_default (hb_font_t* font, + void* font_data HB_UNUSED, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_v_advance_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->get_glyph_v_advance (*first_glyph); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + return; + } + + font->parent->get_glyph_v_advances (count, + first_glyph, glyph_stride, + first_advance, advance_stride); + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->parent_scale_y_distance (*first_advance); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } +} + +static hb_bool_t +hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return true; +} + +static hb_bool_t +hb_font_get_glyph_h_origin_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_bool_t +hb_font_get_glyph_v_origin_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return false; +} + +static hb_bool_t +hb_font_get_glyph_v_origin_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_position_t +hb_font_get_glyph_h_kerning_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t left_glyph HB_UNUSED, + hb_codepoint_t right_glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + return 0; +} + +static hb_position_t +hb_font_get_glyph_h_kerning_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph, + void *user_data HB_UNUSED) +{ + return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph)); +} + +#ifndef HB_DISABLE_DEPRECATED +static hb_position_t +hb_font_get_glyph_v_kerning_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t top_glyph HB_UNUSED, + hb_codepoint_t bottom_glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + return 0; +} + +static hb_position_t +hb_font_get_glyph_v_kerning_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t top_glyph, + hb_codepoint_t bottom_glyph, + void *user_data HB_UNUSED) +{ + return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph)); +} +#endif + +static hb_bool_t +hb_font_get_glyph_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_memset (extents, 0, sizeof (*extents)); + return false; +} + +static hb_bool_t +hb_font_get_glyph_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_extents (glyph, extents); + if (ret) { + font->parent_scale_position (&extents->x_bearing, &extents->y_bearing); + font->parent_scale_distance (&extents->width, &extents->height); + } + return ret; +} + +static hb_bool_t +hb_font_get_glyph_contour_point_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + unsigned int point_index HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return false; +} + +static hb_bool_t +hb_font_get_glyph_contour_point_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + unsigned int point_index, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_contour_point (glyph, point_index, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_bool_t +hb_font_get_glyph_name_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + char *name, + unsigned int size, + void *user_data HB_UNUSED) +{ + if (size) *name = '\0'; + return false; +} + +static hb_bool_t +hb_font_get_glyph_name_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + char *name, + unsigned int size, + void *user_data HB_UNUSED) +{ + return font->parent->get_glyph_name (glyph, name, size); +} + +static hb_bool_t +hb_font_get_glyph_from_name_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + const char *name HB_UNUSED, + int len HB_UNUSED, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} + +static hb_bool_t +hb_font_get_glyph_from_name_default (hb_font_t *font, + void *font_data HB_UNUSED, + const char *name, + int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + return font->parent->get_glyph_from_name (name, len, glyph); +} + +static void +hb_font_draw_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, + void *draw_data, + void *user_data HB_UNUSED) +{ +} + +static void +hb_font_paint_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_paint_funcs_t *paint_funcs HB_UNUSED, + void *paint_data HB_UNUSED, + unsigned int palette HB_UNUSED, + hb_color_t foreground HB_UNUSED, + void *user_data HB_UNUSED) +{ +} + +typedef struct hb_font_draw_glyph_default_adaptor_t { + hb_draw_funcs_t *draw_funcs; + void *draw_data; + float x_scale; + float y_scale; + float slant; +} hb_font_draw_glyph_default_adaptor_t; + +static void +hb_draw_move_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, + void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t *adaptor = (hb_font_draw_glyph_default_adaptor_t *) draw_data; + float x_scale = adaptor->x_scale; + float y_scale = adaptor->y_scale; + float slant = adaptor->slant; + + adaptor->draw_funcs->emit_move_to (adaptor->draw_data, *st, + x_scale * to_x + slant * to_y, y_scale * to_y); +} + +static void +hb_draw_line_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, + hb_draw_state_t *st, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t *adaptor = (hb_font_draw_glyph_default_adaptor_t *) draw_data; + float x_scale = adaptor->x_scale; + float y_scale = adaptor->y_scale; + float slant = adaptor->slant; + + st->current_x = st->current_x * x_scale + st->current_y * slant; + st->current_y = st->current_y * y_scale; + + adaptor->draw_funcs->emit_line_to (adaptor->draw_data, *st, + x_scale * to_x + slant * to_y, y_scale * to_y); +} + +static void +hb_draw_quadratic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, + hb_draw_state_t *st, + float control_x, float control_y, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t *adaptor = (hb_font_draw_glyph_default_adaptor_t *) draw_data; + float x_scale = adaptor->x_scale; + float y_scale = adaptor->y_scale; + float slant = adaptor->slant; + + st->current_x = st->current_x * x_scale + st->current_y * slant; + st->current_y = st->current_y * y_scale; + + adaptor->draw_funcs->emit_quadratic_to (adaptor->draw_data, *st, + x_scale * control_x + slant * control_y, y_scale * control_y, + x_scale * to_x + slant * to_y, y_scale * to_y); +} + +static void +hb_draw_cubic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, + hb_draw_state_t *st, + float control1_x, float control1_y, + float control2_x, float control2_y, + float to_x, float to_y, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t *adaptor = (hb_font_draw_glyph_default_adaptor_t *) draw_data; + float x_scale = adaptor->x_scale; + float y_scale = adaptor->y_scale; + float slant = adaptor->slant; + + st->current_x = st->current_x * x_scale + st->current_y * slant; + st->current_y = st->current_y * y_scale; + + adaptor->draw_funcs->emit_cubic_to (adaptor->draw_data, *st, + x_scale * control1_x + slant * control1_y, y_scale * control1_y, + x_scale * control2_x + slant * control2_y, y_scale * control2_y, + x_scale * to_x + slant * to_y, y_scale * to_y); +} + +static void +hb_draw_close_path_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, + hb_draw_state_t *st, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t *adaptor = (hb_font_draw_glyph_default_adaptor_t *) draw_data; + + adaptor->draw_funcs->emit_close_path (adaptor->draw_data, *st); +} + +static const hb_draw_funcs_t _hb_draw_funcs_default = { + HB_OBJECT_HEADER_STATIC, + + { +#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_default, + HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_DRAW_FUNC_IMPLEMENT + } +}; + +static void +hb_font_draw_glyph_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, + void *draw_data, + void *user_data HB_UNUSED) +{ + hb_font_draw_glyph_default_adaptor_t adaptor = { + draw_funcs, + draw_data, + font->parent->x_scale ? (float) font->x_scale / (float) font->parent->x_scale : 0.f, + font->parent->y_scale ? (float) font->y_scale / (float) font->parent->y_scale : 0.f, + font->parent->y_scale ? (font->slant - font->parent->slant) * + (float) font->x_scale / (float) font->parent->y_scale : 0.f + }; + + font->parent->draw_glyph (glyph, + const_cast (&_hb_draw_funcs_default), + &adaptor); +} + +static void +hb_font_paint_glyph_default (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_paint_funcs_t *paint_funcs, + void *paint_data, + unsigned int palette, + hb_color_t foreground, + void *user_data) +{ + paint_funcs->push_transform (paint_data, + font->parent->x_scale ? (float) font->x_scale / (float) font->parent->x_scale : 0.f, + font->parent->y_scale ? (font->slant - font->parent->slant) * + (float) font->x_scale / (float) font->parent->y_scale : 0.f, + 0.f, + font->parent->y_scale ? (float) font->y_scale / (float) font->parent->y_scale : 0.f, + 0.f, 0.f); + + font->parent->paint_glyph (glyph, paint_funcs, paint_data, palette, foreground); + + paint_funcs->pop_transform (paint_data); +} + +DEFINE_NULL_INSTANCE (hb_font_funcs_t) = +{ + HB_OBJECT_HEADER_STATIC, + + nullptr, + nullptr, + { + { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) hb_font_##get_##name##_nil, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } + } +}; + +static const hb_font_funcs_t _hb_font_funcs_default = { + HB_OBJECT_HEADER_STATIC, + + nullptr, + nullptr, + { + { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) hb_font_##get_##name##_default, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } + } +}; + + +/** + * hb_font_funcs_create: + * + * Creates a new #hb_font_funcs_t structure of font functions. + * + * Return value: (transfer full): The font-functions structure + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_create () +{ + hb_font_funcs_t *ffuncs; + + if (!(ffuncs = hb_object_create ())) + return hb_font_funcs_get_empty (); + + ffuncs->get = _hb_font_funcs_default.get; + + return ffuncs; +} + +/** + * hb_font_funcs_get_empty: + * + * Fetches an empty font-functions structure. + * + * Return value: (transfer full): The font-functions structure + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_get_empty () +{ + return const_cast (&_hb_font_funcs_default); +} + +/** + * hb_font_funcs_reference: (skip) + * @ffuncs: The font-functions structure + * + * Increases the reference count on a font-functions structure. + * + * Return value: The font-functions structure + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_reference (hb_font_funcs_t *ffuncs) +{ + return hb_object_reference (ffuncs); +} + +/** + * hb_font_funcs_destroy: (skip) + * @ffuncs: The font-functions structure + * + * Decreases the reference count on a font-functions structure. When + * the reference count reaches zero, the font-functions structure is + * destroyed, freeing all memory. + * + * Since: 0.9.2 + **/ +void +hb_font_funcs_destroy (hb_font_funcs_t *ffuncs) +{ + if (!hb_object_destroy (ffuncs)) return; + + if (ffuncs->destroy) + { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) if (ffuncs->destroy->name) \ + ffuncs->destroy->name (!ffuncs->user_data ? nullptr : ffuncs->user_data->name); + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } + + hb_free (ffuncs->destroy); + hb_free (ffuncs->user_data); + + hb_free (ffuncs); +} + +/** + * hb_font_funcs_set_user_data: (skip) + * @ffuncs: The font-functions structure + * @key: The user-data key to set + * @data: A pointer to the user data set + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified font-functions structure. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy /* May be NULL. */, + hb_bool_t replace) +{ + return hb_object_set_user_data (ffuncs, key, data, destroy, replace); +} + +/** + * hb_font_funcs_get_user_data: (skip) + * @ffuncs: The font-functions structure + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified font-functions structure. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 0.9.2 + **/ +void * +hb_font_funcs_get_user_data (const hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (ffuncs, key); +} + + +/** + * hb_font_funcs_make_immutable: + * @ffuncs: The font-functions structure + * + * Makes a font-functions structure immutable. + * + * Since: 0.9.2 + **/ +void +hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs) +{ + if (hb_object_is_immutable (ffuncs)) + return; + + hb_object_make_immutable (ffuncs); +} + +/** + * hb_font_funcs_is_immutable: + * @ffuncs: The font-functions structure + * + * Tests whether a font-functions structure is immutable. + * + * Return value: `true` if @ffuncs is immutable, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs) +{ + return hb_object_is_immutable (ffuncs); +} + + +static bool +_hb_font_funcs_set_preamble (hb_font_funcs_t *ffuncs, + bool func_is_null, + void **user_data, + hb_destroy_func_t *destroy) +{ + if (hb_object_is_immutable (ffuncs)) + { + if (*destroy) + (*destroy) (*user_data); + return false; + } + + if (func_is_null) + { + if (*destroy) + (*destroy) (*user_data); + *destroy = nullptr; + *user_data = nullptr; + } + + return true; +} + +static bool +_hb_font_funcs_set_middle (hb_font_funcs_t *ffuncs, + void *user_data, + hb_destroy_func_t destroy) +{ + if (user_data && !ffuncs->user_data) + { + ffuncs->user_data = (decltype (ffuncs->user_data)) hb_calloc (1, sizeof (*ffuncs->user_data)); + if (unlikely (!ffuncs->user_data)) + goto fail; + } + if (destroy && !ffuncs->destroy) + { + ffuncs->destroy = (decltype (ffuncs->destroy)) hb_calloc (1, sizeof (*ffuncs->destroy)); + if (unlikely (!ffuncs->destroy)) + goto fail; + } + + return true; + +fail: + if (destroy) + (destroy) (user_data); + return false; +} + +#define HB_FONT_FUNC_IMPLEMENT(get_,name) \ + \ +void \ +hb_font_funcs_set_##name##_func (hb_font_funcs_t *ffuncs, \ + hb_font_##get_##name##_func_t func, \ + void *user_data, \ + hb_destroy_func_t destroy) \ +{ \ + if (!_hb_font_funcs_set_preamble (ffuncs, !func, &user_data, &destroy))\ + return; \ + \ + if (ffuncs->destroy && ffuncs->destroy->name) \ + ffuncs->destroy->name (!ffuncs->user_data ? nullptr : ffuncs->user_data->name); \ + \ + if (!_hb_font_funcs_set_middle (ffuncs, user_data, destroy)) \ + return; \ + \ + if (func) \ + ffuncs->get.f.name = func; \ + else \ + ffuncs->get.f.name = hb_font_##get_##name##_default; \ + \ + if (ffuncs->user_data) \ + ffuncs->user_data->name = user_data; \ + if (ffuncs->destroy) \ + ffuncs->destroy->name = destroy; \ +} + +HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + +bool +hb_font_t::has_func_set (unsigned int i) +{ + return this->klass->get.array[i] != _hb_font_funcs_default.get.array[i]; +} + +bool +hb_font_t::has_func (unsigned int i) +{ + return has_func_set (i) || + (parent && parent != &_hb_Null_hb_font_t && parent->has_func (i)); +} + +/* Public getters */ + +/** + * hb_font_get_h_extents: + * @font: #hb_font_t to work upon + * @extents: (out): The font extents retrieved + * + * Fetches the extents for a specified font, for horizontal + * text segments. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 1.1.3 + **/ +hb_bool_t +hb_font_get_h_extents (hb_font_t *font, + hb_font_extents_t *extents) +{ + return font->get_font_h_extents (extents); +} + +/** + * hb_font_get_v_extents: + * @font: #hb_font_t to work upon + * @extents: (out): The font extents retrieved + * + * Fetches the extents for a specified font, for vertical + * text segments. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 1.1.3 + **/ +hb_bool_t +hb_font_get_v_extents (hb_font_t *font, + hb_font_extents_t *extents) +{ + return font->get_font_v_extents (extents); +} + +/** + * hb_font_get_glyph: + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @variation_selector: A variation-selector code point + * @glyph: (out): The glyph ID retrieved + * + * Fetches the glyph ID for a Unicode code point in the specified + * font, with an optional variation selector. + * + * If @variation_selector is 0, calls hb_font_get_nominal_glyph(); + * otherwise calls hb_font_get_variation_glyph(). + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph (hb_font_t *font, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) +{ + if (unlikely (variation_selector)) + return font->get_variation_glyph (unicode, variation_selector, glyph); + return font->get_nominal_glyph (unicode, glyph); +} + +/** + * hb_font_get_nominal_glyph: + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @glyph: (out): The glyph ID retrieved + * + * Fetches the nominal glyph ID for a Unicode code point in the + * specified font. + * + * This version of the function should not be used to fetch glyph IDs + * for code points modified by variation selectors. For variation-selector + * support, user hb_font_get_variation_glyph() or use hb_font_get_glyph(). + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 1.2.3 + **/ +hb_bool_t +hb_font_get_nominal_glyph (hb_font_t *font, + hb_codepoint_t unicode, + hb_codepoint_t *glyph) +{ + return font->get_nominal_glyph (unicode, glyph); +} + +/** + * hb_font_get_nominal_glyphs: + * @font: #hb_font_t to work upon + * @count: number of code points to query + * @first_unicode: The first Unicode code point to query + * @unicode_stride: The stride between successive code points + * @first_glyph: (out): The first glyph ID retrieved + * @glyph_stride: The stride between successive glyph IDs + * + * Fetches the nominal glyph IDs for a sequence of Unicode code points. Glyph + * IDs must be returned in a #hb_codepoint_t output parameter. Stopes at the + * first unsupported glyph ID. + * + * Return value: the number of code points processed + * + * Since: 2.6.3 + **/ +unsigned int +hb_font_get_nominal_glyphs (hb_font_t *font, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride) +{ + return font->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride); +} + +/** + * hb_font_get_variation_glyph: + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @variation_selector: The variation-selector code point to query + * @glyph: (out): The glyph ID retrieved + * + * Fetches the glyph ID for a Unicode code point when followed by + * by the specified variation-selector code point, in the specified + * font. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 1.2.3 + **/ +hb_bool_t +hb_font_get_variation_glyph (hb_font_t *font, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) +{ + return font->get_variation_glyph (unicode, variation_selector, glyph); +} + +/** + * hb_font_get_glyph_h_advance: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * + * Fetches the advance for a glyph ID in the specified font, + * for horizontal text segments. + * + * Return value: The advance of @glyph within @font + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_h_advance (hb_font_t *font, + hb_codepoint_t glyph) +{ + return font->get_glyph_h_advance (glyph); +} + +/** + * hb_font_get_glyph_v_advance: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * + * Fetches the advance for a glyph ID in the specified font, + * for vertical text segments. + * + * Return value: The advance of @glyph within @font + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_v_advance (hb_font_t *font, + hb_codepoint_t glyph) +{ + return font->get_glyph_v_advance (glyph); +} + +/** + * hb_font_get_glyph_h_advances: + * @font: #hb_font_t to work upon + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: The stride between successive advances + * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, for horizontal text segments. + * + * Since: 1.8.6 + **/ +void +hb_font_get_glyph_h_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); +} +/** + * hb_font_get_glyph_v_advances: + * @font: #hb_font_t to work upon + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: (out): The stride between successive advances + * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, for vertical text segments. + * + * Since: 1.8.6 + **/ +void +hb_font_get_glyph_v_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); +} + +/** + * hb_font_get_glyph_h_origin: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @x: (out): The X coordinate of the origin + * @y: (out): The Y coordinate of the origin + * + * Fetches the (X,Y) coordinates of the origin for a glyph ID + * in the specified font, for horizontal text segments. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_h_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_h_origin (glyph, x, y); +} + +/** + * hb_font_get_glyph_v_origin: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @x: (out): The X coordinate of the origin + * @y: (out): The Y coordinate of the origin + * + * Fetches the (X,Y) coordinates of the origin for a glyph ID + * in the specified font, for vertical text segments. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_v_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_v_origin (glyph, x, y); +} + +/** + * hb_font_get_glyph_h_kerning: + * @font: #hb_font_t to work upon + * @left_glyph: The glyph ID of the left glyph in the glyph pair + * @right_glyph: The glyph ID of the right glyph in the glyph pair + * + * Fetches the kerning-adjustment value for a glyph-pair in + * the specified font, for horizontal text segments. + * + * It handles legacy kerning only (as returned by the corresponding + * #hb_font_funcs_t function). + * + * Return value: The kerning adjustment value + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_h_kerning (hb_font_t *font, + hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph) +{ + return font->get_glyph_h_kerning (left_glyph, right_glyph); +} + +#ifndef HB_DISABLE_DEPRECATED +/** + * hb_font_get_glyph_v_kerning: + * @font: #hb_font_t to work upon + * @top_glyph: The glyph ID of the top glyph in the glyph pair + * @bottom_glyph: The glyph ID of the bottom glyph in the glyph pair + * + * Fetches the kerning-adjustment value for a glyph-pair in + * the specified font, for vertical text segments. + * + * It handles legacy kerning only (as returned by the corresponding + * #hb_font_funcs_t function). + * + * Return value: The kerning adjustment value + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +hb_position_t +hb_font_get_glyph_v_kerning (hb_font_t *font, + hb_codepoint_t top_glyph, + hb_codepoint_t bottom_glyph) +{ + return font->get_glyph_v_kerning (top_glyph, bottom_glyph); +} +#endif + +/** + * hb_font_get_glyph_extents: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @extents: (out): The #hb_glyph_extents_t retrieved + * + * Fetches the #hb_glyph_extents_t data for a glyph ID + * in the specified font. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents) +{ + return font->get_glyph_extents (glyph, extents); +} + +/** + * hb_font_get_glyph_contour_point: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @point_index: The contour-point index to query + * @x: (out): The X value retrieved for the contour point + * @y: (out): The Y value retrieved for the contour point + * + * Fetches the (x,y) coordinates of a specified contour-point index + * in the specified glyph, within the specified font. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_contour_point (hb_font_t *font, + hb_codepoint_t glyph, + unsigned int point_index, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_contour_point (glyph, point_index, x, y); +} + +/** + * hb_font_get_glyph_name: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @name: (out) (array length=size): Name string retrieved for the glyph ID + * @size: Length of the glyph-name string retrieved + * + * Fetches the glyph-name string for a glyph ID in the specified @font. + * + * According to the OpenType specification, glyph names are limited to 63 + * characters and can only contain (a subset of) ASCII. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_name (hb_font_t *font, + hb_codepoint_t glyph, + char *name, + unsigned int size) +{ + return font->get_glyph_name (glyph, name, size); +} + +/** + * hb_font_get_glyph_from_name: + * @font: #hb_font_t to work upon + * @name: (array length=len): The name string to query + * @len: The length of the name queried + * @glyph: (out): The glyph ID retrieved + * + * Fetches the glyph ID that corresponds to a name string in the specified @font. + * + * Note: @len == -1 means the name string is null-terminated. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_from_name (hb_font_t *font, + const char *name, + int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph) +{ + return font->get_glyph_from_name (name, len, glyph); +} + +/** + * hb_font_get_glyph_shape: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID + * @dfuncs: #hb_draw_funcs_t to draw to + * @draw_data: User data to pass to draw callbacks + * + * Fetches the glyph shape that corresponds to a glyph in the specified @font. + * The shape is returned by way of calls to the callbacks of the @dfuncs + * objects, with @draw_data passed to them. + * + * Since: 4.0.0 + * Deprecated: 7.0.0: Use hb_font_draw_glyph() instead + */ +void +hb_font_get_glyph_shape (hb_font_t *font, + hb_codepoint_t glyph, + hb_draw_funcs_t *dfuncs, void *draw_data) +{ + hb_font_draw_glyph (font, glyph, dfuncs, draw_data); +} + +/** + * hb_font_draw_glyph: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID + * @dfuncs: #hb_draw_funcs_t to draw to + * @draw_data: User data to pass to draw callbacks + * + * Draws the outline that corresponds to a glyph in the specified @font. + * + * The outline is returned by way of calls to the callbacks of the @dfuncs + * objects, with @draw_data passed to them. + * + * Since: 7.0.0 + **/ +void +hb_font_draw_glyph (hb_font_t *font, + hb_codepoint_t glyph, + hb_draw_funcs_t *dfuncs, void *draw_data) +{ + font->draw_glyph (glyph, dfuncs, draw_data); +} + +/** + * hb_font_paint_glyph: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID + * @pfuncs: #hb_paint_funcs_t to paint with + * @paint_data: User data to pass to paint callbacks + * @palette_index: The index of the font's color palette to use + * @foreground: The foreground color, unpremultipled + * + * Paints the glyph. + * + * The painting instructions are returned by way of calls to + * the callbacks of the @funcs object, with @paint_data passed + * to them. + * + * If the font has color palettes (see hb_ot_color_has_palettes()), + * then @palette_index selects the palette to use. If the font only + * has one palette, this will be 0. + * + * Since: 7.0.0 + */ +void +hb_font_paint_glyph (hb_font_t *font, + hb_codepoint_t glyph, + hb_paint_funcs_t *pfuncs, void *paint_data, + unsigned int palette_index, + hb_color_t foreground) +{ + font->paint_glyph (glyph, pfuncs, paint_data, palette_index, foreground); +} + +/* A bit higher-level, and with fallback */ + +/** + * hb_font_get_extents_for_direction: + * @font: #hb_font_t to work upon + * @direction: The direction of the text segment + * @extents: (out): The #hb_font_extents_t retrieved + * + * Fetches the extents for a font in a text segment of the + * specified direction. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 1.1.3 + **/ +void +hb_font_get_extents_for_direction (hb_font_t *font, + hb_direction_t direction, + hb_font_extents_t *extents) +{ + font->get_extents_for_direction (direction, extents); +} +/** + * hb_font_get_glyph_advance_for_direction: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (out): The horizontal advance retrieved + * @y: (out): The vertical advance retrieved + * + * Fetches the advance for a glyph ID from the specified font, + * in a text segment of the specified direction. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_advance_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + font->get_glyph_advance_for_direction (glyph, direction, x, y); +} +/** + * hb_font_get_glyph_advances_for_direction: + * @font: #hb_font_t to work upon + * @direction: The direction of the text segment + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: (out): The stride between successive advances + * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, in a text segment of the specified direction. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 1.8.6 + **/ +HB_EXTERN void +hb_font_get_glyph_advances_for_direction (hb_font_t* font, + hb_direction_t direction, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_advances_for_direction (direction, count, first_glyph, glyph_stride, first_advance, advance_stride); +} + +/** + * hb_font_get_glyph_origin_for_direction: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (out): The X coordinate retrieved for the origin + * @y: (out): The Y coordinate retrieved for the origin + * + * Fetches the (X,Y) coordinates of the origin for a glyph in + * the specified font. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_add_glyph_origin_for_direction: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (inout): Input = The original X coordinate + * Output = The X coordinate plus the X-coordinate of the origin + * @y: (inout): Input = The original Y coordinate + * Output = The Y coordinate plus the Y-coordinate of the origin + * + * Adds the origin coordinates to an (X,Y) point coordinate, in + * the specified glyph ID in the specified font. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 0.9.2 + **/ +void +hb_font_add_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + return font->add_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_subtract_glyph_origin_for_direction: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (inout): Input = The original X coordinate + * Output = The X coordinate minus the X-coordinate of the origin + * @y: (inout): Input = The original Y coordinate + * Output = The Y coordinate minus the Y-coordinate of the origin + * + * Subtracts the origin coordinates from an (X,Y) point coordinate, + * in the specified glyph ID in the specified font. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 0.9.2 + **/ +void +hb_font_subtract_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + return font->subtract_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_get_glyph_kerning_for_direction: + * @font: #hb_font_t to work upon + * @first_glyph: The glyph ID of the first glyph in the glyph pair to query + * @second_glyph: The glyph ID of the second glyph in the glyph pair to query + * @direction: The direction of the text segment + * @x: (out): The horizontal kerning-adjustment value retrieved + * @y: (out): The vertical kerning-adjustment value retrieved + * + * Fetches the kerning-adjustment value for a glyph-pair in the specified font. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_kerning_for_direction (hb_font_t *font, + hb_codepoint_t first_glyph, + hb_codepoint_t second_glyph, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y); +} + +/** + * hb_font_get_glyph_extents_for_origin: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @extents: (out): The #hb_glyph_extents_t retrieved + * + * Fetches the #hb_glyph_extents_t data for a glyph ID + * in the specified font, with respect to the origin in + * a text segment in the specified direction. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_extents_for_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_glyph_extents_t *extents) +{ + return font->get_glyph_extents_for_origin (glyph, direction, extents); +} + +/** + * hb_font_get_glyph_contour_point_for_origin: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @point_index: The contour-point index to query + * @direction: The direction of the text segment + * @x: (out): The X value retrieved for the contour point + * @y: (out): The Y value retrieved for the contour point + * + * Fetches the (X,Y) coordinates of a specified contour-point index + * in the specified glyph ID in the specified font, with respect + * to the origin in a text segment in the specified direction. + * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_contour_point_for_origin (hb_font_t *font, + hb_codepoint_t glyph, + unsigned int point_index, + hb_direction_t direction, + hb_position_t *x, + hb_position_t *y) +{ + return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y); +} + +/** + * hb_font_glyph_to_string: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @s: (out) (array length=size): The string containing the glyph name + * @size: Length of string @s + * + * Fetches the name of the specified glyph ID in @font and returns + * it in string @s. + * + * If the glyph ID has no name in @font, a string of the form `gidDDD` is + * generated, with `DDD` being the glyph ID. + * + * According to the OpenType specification, glyph names are limited to 63 + * characters and can only contain (a subset of) ASCII. + * + * Since: 0.9.2 + **/ +void +hb_font_glyph_to_string (hb_font_t *font, + hb_codepoint_t glyph, + char *s, + unsigned int size) +{ + font->glyph_to_string (glyph, s, size); +} + +/** + * hb_font_glyph_from_string: + * @font: #hb_font_t to work upon + * @s: (array length=len) (element-type uint8_t): string to query + * @len: The length of the string @s + * @glyph: (out): The glyph ID corresponding to the string requested + * + * Fetches the glyph ID from @font that matches the specified string. + * Strings of the format `gidDDD` or `uniUUUU` are parsed automatically. + * + * Note: @len == -1 means the string is null-terminated. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_glyph_from_string (hb_font_t *font, + const char *s, + int len, + hb_codepoint_t *glyph) +{ + return font->glyph_from_string (s, len, glyph); +} + + +/* + * hb_font_t + */ + +DEFINE_NULL_INSTANCE (hb_font_t) = +{ + HB_OBJECT_HEADER_STATIC, + + 0, /* serial */ + 0, /* serial_coords */ + + nullptr, /* parent */ + const_cast (&_hb_Null_hb_face_t), + + 1000, /* x_scale */ + 1000, /* y_scale */ + 0.f, /* x_embolden */ + 0.f, /* y_embolden */ + true, /* embolden_in_place */ + 0, /* x_strength */ + 0, /* y_strength */ + 0.f, /* slant */ + 0.f, /* slant_xy; */ + 1.f, /* x_multf */ + 1.f, /* y_multf */ + 1<<16, /* x_mult */ + 1<<16, /* y_mult */ + + 0, /* x_ppem */ + 0, /* y_ppem */ + 0, /* ptem */ + + HB_FONT_NO_VAR_NAMED_INSTANCE, /* instance_index */ + 0, /* num_coords */ + nullptr, /* coords */ + nullptr, /* design_coords */ + + const_cast (&_hb_Null_hb_font_funcs_t), + + /* Zero for the rest is fine. */ +}; + + +static hb_font_t * +_hb_font_create (hb_face_t *face) +{ + hb_font_t *font; + + if (unlikely (!face)) + face = hb_face_get_empty (); + + if (!(font = hb_object_create ())) + return hb_font_get_empty (); + + hb_face_make_immutable (face); + font->parent = hb_font_get_empty (); + font->face = hb_face_reference (face); + font->klass = hb_font_funcs_get_empty (); + font->data.init0 (font); + font->x_scale = font->y_scale = face->get_upem (); + font->embolden_in_place = true; + font->x_multf = font->y_multf = 1.f; + font->x_mult = font->y_mult = 1 << 16; + font->instance_index = HB_FONT_NO_VAR_NAMED_INSTANCE; + + return font; +} + +/** + * hb_font_create: + * @face: a face. + * + * Constructs a new font object from the specified face. + * + * Note: If @face's index value (as passed to hb_face_create() + * has non-zero top 16-bits, those bits minus one are passed to + * hb_font_set_var_named_instance(), effectively loading a named-instance + * of a variable font, instead of the default-instance. This allows + * specifying which named-instance to load by default when creating the + * face. + * + * Return value: (transfer full): The new font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_create (hb_face_t *face) +{ + hb_font_t *font = _hb_font_create (face); + +#ifndef HB_NO_OT_FONT + /* Install our in-house, very lightweight, funcs. */ + hb_ot_font_set_funcs (font); +#endif + +#ifndef HB_NO_VAR + if (face && face->index >> 16) + hb_font_set_var_named_instance (font, (face->index >> 16) - 1); +#endif + + return font; +} + +static void +_hb_font_adopt_var_coords (hb_font_t *font, + int *coords, /* 2.14 normalized */ + float *design_coords, + unsigned int coords_length) +{ + hb_free (font->coords); + hb_free (font->design_coords); + + font->coords = coords; + font->design_coords = design_coords; + font->num_coords = coords_length; + + font->mults_changed (); // Easiest to call this to drop cached data +} + +/** + * hb_font_create_sub_font: + * @parent: The parent font object + * + * Constructs a sub-font font object from the specified @parent font, + * replicating the parent's properties. + * + * Return value: (transfer full): The new sub-font font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_create_sub_font (hb_font_t *parent) +{ + if (unlikely (!parent)) + parent = hb_font_get_empty (); + + hb_font_t *font = _hb_font_create (parent->face); + + if (unlikely (hb_object_is_immutable (font))) + return font; + + font->parent = hb_font_reference (parent); + + font->x_scale = parent->x_scale; + font->y_scale = parent->y_scale; + font->x_embolden = parent->x_embolden; + font->y_embolden = parent->y_embolden; + font->embolden_in_place = parent->embolden_in_place; + font->slant = parent->slant; + font->x_ppem = parent->x_ppem; + font->y_ppem = parent->y_ppem; + font->ptem = parent->ptem; + + unsigned int num_coords = parent->num_coords; + if (num_coords) + { + int *coords = (int *) hb_calloc (num_coords, sizeof (parent->coords[0])); + float *design_coords = (float *) hb_calloc (num_coords, sizeof (parent->design_coords[0])); + if (likely (coords && design_coords)) + { + hb_memcpy (coords, parent->coords, num_coords * sizeof (parent->coords[0])); + hb_memcpy (design_coords, parent->design_coords, num_coords * sizeof (parent->design_coords[0])); + _hb_font_adopt_var_coords (font, coords, design_coords, num_coords); + } + else + { + hb_free (coords); + hb_free (design_coords); + } + } + + font->mults_changed (); + + return font; +} + +/** + * hb_font_get_empty: + * + * Fetches the empty font object. + * + * Return value: (transfer full): The empty font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_get_empty () +{ + return const_cast (&Null (hb_font_t)); +} + +/** + * hb_font_reference: (skip) + * @font: #hb_font_t to work upon + * + * Increases the reference count on the given font object. + * + * Return value: (transfer full): The @font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_reference (hb_font_t *font) +{ + return hb_object_reference (font); +} + +/** + * hb_font_destroy: (skip) + * @font: #hb_font_t to work upon + * + * Decreases the reference count on the given font object. When the + * reference count reaches zero, the font is destroyed, + * freeing all memory. + * + * Since: 0.9.2 + **/ +void +hb_font_destroy (hb_font_t *font) +{ + if (!hb_object_destroy (font)) return; + + font->data.fini (); + + if (font->destroy) + font->destroy (font->user_data); + + hb_font_destroy (font->parent); + hb_face_destroy (font->face); + hb_font_funcs_destroy (font->klass); + + hb_free (font->coords); + hb_free (font->design_coords); + + hb_free (font); +} + +/** + * hb_font_set_user_data: (skip) + * @font: #hb_font_t to work upon + * @key: The user-data key + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified font object. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_set_user_data (hb_font_t *font, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy /* May be NULL. */, + hb_bool_t replace) +{ + if (!hb_object_is_immutable (font)) + font->serial++; + + return hb_object_set_user_data (font, key, data, destroy, replace); +} + +/** + * hb_font_get_user_data: (skip) + * @font: #hb_font_t to work upon + * @key: The user-data key to query + * + * Fetches the user-data object associated with the specified key, + * attached to the specified font object. + * + * Return value: (transfer none): Pointer to the user data + * + * Since: 0.9.2 + **/ +void * +hb_font_get_user_data (const hb_font_t *font, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (font, key); +} + +/** + * hb_font_make_immutable: + * @font: #hb_font_t to work upon + * + * Makes @font immutable. + * + * Since: 0.9.2 + **/ +void +hb_font_make_immutable (hb_font_t *font) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->parent) + hb_font_make_immutable (font->parent); + + hb_object_make_immutable (font); +} + +/** + * hb_font_is_immutable: + * @font: #hb_font_t to work upon + * + * Tests whether a font object is immutable. + * + * Return value: `true` if @font is immutable, `false` otherwise + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_is_immutable (hb_font_t *font) +{ + return hb_object_is_immutable (font); +} + +/** + * hb_font_get_serial: + * @font: #hb_font_t to work upon + * + * Returns the internal serial number of the font. The serial + * number is increased every time a setting on the font is + * changed, using a setter function. + * + * Return value: serial number + * + * Since: 4.4.0 + **/ +unsigned int +hb_font_get_serial (hb_font_t *font) +{ + return font->serial; +} + +/** + * hb_font_changed: + * @font: #hb_font_t to work upon + * + * Notifies the @font that underlying font data has changed. + * This has the effect of increasing the serial as returned + * by hb_font_get_serial(), which invalidates internal caches. + * + * Since: 4.4.0 + **/ +void +hb_font_changed (hb_font_t *font) +{ + if (hb_object_is_immutable (font)) + return; + + font->serial++; + + font->mults_changed (); +} + +/** + * hb_font_set_parent: + * @font: #hb_font_t to work upon + * @parent: The parent font object to assign + * + * Sets the parent font of @font. + * + * Since: 1.0.5 + **/ +void +hb_font_set_parent (hb_font_t *font, + hb_font_t *parent) +{ + if (hb_object_is_immutable (font)) + return; + + if (parent == font->parent) + return; + + font->serial++; + + if (!parent) + parent = hb_font_get_empty (); + + hb_font_t *old = font->parent; + + font->parent = hb_font_reference (parent); + + hb_font_destroy (old); +} + +/** + * hb_font_get_parent: + * @font: #hb_font_t to work upon + * + * Fetches the parent font of @font. + * + * Return value: (transfer none): The parent font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_get_parent (hb_font_t *font) +{ + return font->parent; +} + +/** + * hb_font_set_face: + * @font: #hb_font_t to work upon + * @face: The #hb_face_t to assign + * + * Sets @face as the font-face value of @font. + * + * Since: 1.4.3 + **/ +void +hb_font_set_face (hb_font_t *font, + hb_face_t *face) +{ + if (hb_object_is_immutable (font)) + return; + + if (face == font->face) + return; + + font->serial++; + + if (unlikely (!face)) + face = hb_face_get_empty (); + + hb_face_t *old = font->face; + + hb_face_make_immutable (face); + font->face = hb_face_reference (face); + font->mults_changed (); + + hb_face_destroy (old); +} + +/** + * hb_font_get_face: + * @font: #hb_font_t to work upon + * + * Fetches the face associated with the specified font object. + * + * Return value: (transfer none): The #hb_face_t value + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_font_get_face (hb_font_t *font) +{ + return font->face; +} + + +/** + * hb_font_set_funcs: + * @font: #hb_font_t to work upon + * @klass: (closure font_data) (destroy destroy) (scope notified): The font-functions structure. + * @font_data: Data to attach to @font + * @destroy: (nullable): The function to call when @font_data is not needed anymore + * + * Replaces the font-functions structure attached to a font, updating + * the font's user-data with @font-data and the @destroy callback. + * + * Since: 0.9.2 + **/ +void +hb_font_set_funcs (hb_font_t *font, + hb_font_funcs_t *klass, + void *font_data, + hb_destroy_func_t destroy /* May be NULL. */) +{ + if (hb_object_is_immutable (font)) + { + if (destroy) + destroy (font_data); + return; + } + + font->serial++; + + if (font->destroy) + font->destroy (font->user_data); + + if (!klass) + klass = hb_font_funcs_get_empty (); + + hb_font_funcs_reference (klass); + hb_font_funcs_destroy (font->klass); + font->klass = klass; + font->user_data = font_data; + font->destroy = destroy; +} + +/** + * hb_font_set_funcs_data: + * @font: #hb_font_t to work upon + * @font_data: (destroy destroy) (scope notified): Data to attach to @font + * @destroy: (nullable): The function to call when @font_data is not needed anymore + * + * Replaces the user data attached to a font, updating the font's + * @destroy callback. + * + * Since: 0.9.2 + **/ +void +hb_font_set_funcs_data (hb_font_t *font, + void *font_data, + hb_destroy_func_t destroy /* May be NULL. */) +{ + /* Destroy user_data? */ + if (hb_object_is_immutable (font)) + { + if (destroy) + destroy (font_data); + return; + } + + font->serial++; + + if (font->destroy) + font->destroy (font->user_data); + + font->user_data = font_data; + font->destroy = destroy; +} + + +/** + * hb_font_set_scale: + * @font: #hb_font_t to work upon + * @x_scale: Horizontal scale value to assign + * @y_scale: Vertical scale value to assign + * + * Sets the horizontal and vertical scale of a font. + * + * The font scale is a number related to, but not the same as, + * font size. Typically the client establishes a scale factor + * to be used between the two. For example, 64, or 256, which + * would be the fractional-precision part of the font scale. + * This is necessary because #hb_position_t values are integer + * types and you need to leave room for fractional values + * in there. + * + * For example, to set the font size to 20, with 64 + * levels of fractional precision you would call + * `hb_font_set_scale(font, 20 * 64, 20 * 64)`. + * + * In the example above, even what font size 20 means is up to + * you. It might be 20 pixels, or 20 points, or 20 millimeters. + * HarfBuzz does not care about that. You can set the point + * size of the font using hb_font_set_ptem(), and the pixel + * size using hb_font_set_ppem(). + * + * The choice of scale is yours but needs to be consistent between + * what you set here, and what you expect out of #hb_position_t + * as well has draw / paint API output values. + * + * Fonts default to a scale equal to the UPEM value of their face. + * A font with this setting is sometimes called an "unscaled" font. + * + * Since: 0.9.2 + **/ +void +hb_font_set_scale (hb_font_t *font, + int x_scale, + int y_scale) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->x_scale == x_scale && font->y_scale == y_scale) + return; + + font->serial++; + + font->x_scale = x_scale; + font->y_scale = y_scale; + font->mults_changed (); +} + +/** + * hb_font_get_scale: + * @font: #hb_font_t to work upon + * @x_scale: (out): Horizontal scale value + * @y_scale: (out): Vertical scale value + * + * Fetches the horizontal and vertical scale of a font. + * + * Since: 0.9.2 + **/ +void +hb_font_get_scale (hb_font_t *font, + int *x_scale, + int *y_scale) +{ + if (x_scale) *x_scale = font->x_scale; + if (y_scale) *y_scale = font->y_scale; +} + +/** + * hb_font_set_ppem: + * @font: #hb_font_t to work upon + * @x_ppem: Horizontal ppem value to assign + * @y_ppem: Vertical ppem value to assign + * + * Sets the horizontal and vertical pixels-per-em (PPEM) of a font. + * + * These values are used for pixel-size-specific adjustment to + * shaping and draw results, though for the most part they are + * unused and can be left unset. + * + * Since: 0.9.2 + **/ +void +hb_font_set_ppem (hb_font_t *font, + unsigned int x_ppem, + unsigned int y_ppem) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->x_ppem == x_ppem && font->y_ppem == y_ppem) + return; + + font->serial++; + + font->x_ppem = x_ppem; + font->y_ppem = y_ppem; +} + +/** + * hb_font_get_ppem: + * @font: #hb_font_t to work upon + * @x_ppem: (out): Horizontal ppem value + * @y_ppem: (out): Vertical ppem value + * + * Fetches the horizontal and vertical points-per-em (ppem) of a font. + * + * Since: 0.9.2 + **/ +void +hb_font_get_ppem (hb_font_t *font, + unsigned int *x_ppem, + unsigned int *y_ppem) +{ + if (x_ppem) *x_ppem = font->x_ppem; + if (y_ppem) *y_ppem = font->y_ppem; +} + +/** + * hb_font_set_ptem: + * @font: #hb_font_t to work upon + * @ptem: font size in points. + * + * Sets the "point size" of a font. Set to zero to unset. + * Used in CoreText to implement optical sizing. + * + * Note: There are 72 points in an inch. + * + * Since: 1.6.0 + **/ +void +hb_font_set_ptem (hb_font_t *font, + float ptem) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->ptem == ptem) + return; + + font->serial++; + + font->ptem = ptem; +} + +/** + * hb_font_get_ptem: + * @font: #hb_font_t to work upon + * + * Fetches the "point size" of a font. Used in CoreText to + * implement optical sizing. + * + * Return value: Point size. A value of zero means "not set." + * + * Since: 1.6.0 + **/ +float +hb_font_get_ptem (hb_font_t *font) +{ + return font->ptem; +} + +/** + * hb_font_set_synthetic_bold: + * @font: #hb_font_t to work upon + * @x_embolden: the amount to embolden horizontally + * @y_embolden: the amount to embolden vertically + * @in_place: whether to embolden glyphs in-place + * + * Sets the "synthetic boldness" of a font. + * + * Positive values for @x_embolden / @y_embolden make a font + * bolder, negative values thinner. Typical values are in the + * 0.01 to 0.05 range. The default value is zero. + * + * Synthetic boldness is applied by offsetting the contour + * points of the glyph shape. + * + * Synthetic boldness is applied when rendering a glyph via + * hb_font_draw_glyph(). + * + * If @in_place is `false`, then glyph advance-widths are also + * adjusted, otherwise they are not. The in-place mode is + * useful for simulating [font grading](https://fonts.google.com/knowledge/glossary/grade). + * + * + * Since: 7.0.0 + **/ +void +hb_font_set_synthetic_bold (hb_font_t *font, + float x_embolden, + float y_embolden, + hb_bool_t in_place) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->x_embolden == x_embolden && + font->y_embolden == y_embolden && + font->embolden_in_place == (bool) in_place) + return; + + font->serial++; + + font->x_embolden = x_embolden; + font->y_embolden = y_embolden; + font->embolden_in_place = in_place; + font->mults_changed (); +} + +/** + * hb_font_get_synthetic_bold: + * @font: #hb_font_t to work upon + * @x_embolden: (out): return location for horizontal value + * @y_embolden: (out): return location for vertical value + * @in_place: (out): return location for in-place value + * + * Fetches the "synthetic boldness" parameters of a font. + * + * Since: 7.0.0 + **/ +void +hb_font_get_synthetic_bold (hb_font_t *font, + float *x_embolden, + float *y_embolden, + hb_bool_t *in_place) +{ + if (x_embolden) *x_embolden = font->x_embolden; + if (y_embolden) *y_embolden = font->y_embolden; + if (in_place) *in_place = font->embolden_in_place; +} + +/** + * hb_font_set_synthetic_slant: + * @font: #hb_font_t to work upon + * @slant: synthetic slant value. + * + * Sets the "synthetic slant" of a font. By default is zero. + * Synthetic slant is the graphical skew applied to the font + * at rendering time. + * + * HarfBuzz needs to know this value to adjust shaping results, + * metrics, and style values to match the slanted rendering. + * + * Note: The glyph shape fetched via the hb_font_draw_glyph() + * function is slanted to reflect this value as well. + * + * Note: The slant value is a ratio. For example, a + * 20% slant would be represented as a 0.2 value. + * + * Since: 3.3.0 + **/ +HB_EXTERN void +hb_font_set_synthetic_slant (hb_font_t *font, float slant) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->slant == slant) + return; + + font->serial++; + + font->slant = slant; + font->mults_changed (); +} + +/** + * hb_font_get_synthetic_slant: + * @font: #hb_font_t to work upon + * + * Fetches the "synthetic slant" of a font. + * + * Return value: Synthetic slant. By default is zero. + * + * Since: 3.3.0 + **/ +HB_EXTERN float +hb_font_get_synthetic_slant (hb_font_t *font) +{ + return font->slant; +} + +#ifndef HB_NO_VAR +/* + * Variations + */ + +/** + * hb_font_set_variations: + * @font: #hb_font_t to work upon + * @variations: (array length=variations_length): Array of variation settings to apply + * @variations_length: Number of variations to apply + * + * Applies a list of font-variation settings to a font. + * + * Note that this overrides all existing variations set on @font. + * Axes not included in @variations will be effectively set to their + * default values. + * + * Since: 1.4.2 + */ +void +hb_font_set_variations (hb_font_t *font, + const hb_variation_t *variations, + unsigned int variations_length) +{ + if (hb_object_is_immutable (font)) + return; + + font->serial_coords = ++font->serial; + + if (!variations_length && font->instance_index == HB_FONT_NO_VAR_NAMED_INSTANCE) + { + hb_font_set_var_coords_normalized (font, nullptr, 0); + return; + } + + const OT::fvar &fvar = *font->face->table.fvar; + auto axes = fvar.get_axes (); + const unsigned coords_length = axes.length; + + int *normalized = coords_length ? (int *) hb_calloc (coords_length, sizeof (int)) : nullptr; + float *design_coords = coords_length ? (float *) hb_calloc (coords_length, sizeof (float)) : nullptr; + + if (unlikely (coords_length && !(normalized && design_coords))) + { + hb_free (normalized); + hb_free (design_coords); + return; + } + + /* Initialize design coords. */ + for (unsigned int i = 0; i < coords_length; i++) + design_coords[i] = axes[i].get_default (); + if (font->instance_index != HB_FONT_NO_VAR_NAMED_INSTANCE) + { + unsigned count = coords_length; + /* This may fail if index is out-of-range; + * That's why we initialize design_coords from fvar above + * unconditionally. */ + hb_ot_var_named_instance_get_design_coords (font->face, font->instance_index, + &count, design_coords); + } + + for (unsigned int i = 0; i < variations_length; i++) + { + const auto tag = variations[i].tag; + const auto v = variations[i].value; + for (unsigned axis_index = 0; axis_index < coords_length; axis_index++) + if (axes[axis_index].axisTag == tag) + design_coords[axis_index] = v; + } + font->face->table.avar->map_coords (normalized, coords_length); + + hb_ot_var_normalize_coords (font->face, coords_length, design_coords, normalized); + _hb_font_adopt_var_coords (font, normalized, design_coords, coords_length); +} + +/** + * hb_font_set_variation: + * @font: #hb_font_t to work upon + * @tag: The #hb_tag_t tag of the variation-axis name + * @value: The value of the variation axis + * + * Change the value of one variation axis on the font. + * + * Note: This function is expensive to be called repeatedly. + * If you want to set multiple variation axes at the same time, + * use hb_font_set_variations() instead. + * + * Since: 7.1.0 + */ +void +hb_font_set_variation (hb_font_t *font, + hb_tag_t tag, + float value) +{ + if (hb_object_is_immutable (font)) + return; + + font->serial_coords = ++font->serial; + + // TODO Share some of this code with set_variations() + + const OT::fvar &fvar = *font->face->table.fvar; + auto axes = fvar.get_axes (); + const unsigned coords_length = axes.length; + + int *normalized = coords_length ? (int *) hb_calloc (coords_length, sizeof (int)) : nullptr; + float *design_coords = coords_length ? (float *) hb_calloc (coords_length, sizeof (float)) : nullptr; + + if (unlikely (coords_length && !(normalized && design_coords))) + { + hb_free (normalized); + hb_free (design_coords); + return; + } + + /* Initialize design coords. */ + if (font->design_coords) + { + assert (coords_length == font->num_coords); + for (unsigned int i = 0; i < coords_length; i++) + design_coords[i] = font->design_coords[i]; + } + else + { + for (unsigned int i = 0; i < coords_length; i++) + design_coords[i] = axes[i].get_default (); + if (font->instance_index != HB_FONT_NO_VAR_NAMED_INSTANCE) + { + unsigned count = coords_length; + /* This may fail if index is out-of-range; + * That's why we initialize design_coords from fvar above + * unconditionally. */ + hb_ot_var_named_instance_get_design_coords (font->face, font->instance_index, + &count, design_coords); + } + } + + for (unsigned axis_index = 0; axis_index < coords_length; axis_index++) + if (axes[axis_index].axisTag == tag) + design_coords[axis_index] = value; + + font->face->table.avar->map_coords (normalized, coords_length); + + hb_ot_var_normalize_coords (font->face, coords_length, design_coords, normalized); + _hb_font_adopt_var_coords (font, normalized, design_coords, coords_length); + +} + +/** + * hb_font_set_var_coords_design: + * @font: #hb_font_t to work upon + * @coords: (array length=coords_length): Array of variation coordinates to apply + * @coords_length: Number of coordinates to apply + * + * Applies a list of variation coordinates (in design-space units) + * to a font. + * + * Note that this overrides all existing variations set on @font. + * Axes not included in @coords will be effectively set to their + * default values. + * + * Since: 1.4.2 + */ +void +hb_font_set_var_coords_design (hb_font_t *font, + const float *coords, + unsigned int coords_length) +{ + if (hb_object_is_immutable (font)) + return; + + font->serial_coords = ++font->serial; + + int *normalized = coords_length ? (int *) hb_calloc (coords_length, sizeof (int)) : nullptr; + float *design_coords = coords_length ? (float *) hb_calloc (coords_length, sizeof (float)) : nullptr; + + if (unlikely (coords_length && !(normalized && design_coords))) + { + hb_free (normalized); + hb_free (design_coords); + return; + } + + if (coords_length) + hb_memcpy (design_coords, coords, coords_length * sizeof (font->design_coords[0])); + + hb_ot_var_normalize_coords (font->face, coords_length, coords, normalized); + _hb_font_adopt_var_coords (font, normalized, design_coords, coords_length); +} + +/** + * hb_font_set_var_named_instance: + * @font: a font. + * @instance_index: named instance index. + * + * Sets design coords of a font from a named-instance index. + * + * Since: 2.6.0 + */ +void +hb_font_set_var_named_instance (hb_font_t *font, + unsigned int instance_index) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->instance_index == instance_index) + return; + + font->serial_coords = ++font->serial; + + font->instance_index = instance_index; + hb_font_set_variations (font, nullptr, 0); +} + +/** + * hb_font_get_var_named_instance: + * @font: a font. + * + * Returns the currently-set named-instance index of the font. + * + * Return value: Named-instance index or %HB_FONT_NO_VAR_NAMED_INSTANCE. + * + * Since: 7.0.0 + **/ +unsigned int +hb_font_get_var_named_instance (hb_font_t *font) +{ + return font->instance_index; +} + +/** + * hb_font_set_var_coords_normalized: + * @font: #hb_font_t to work upon + * @coords: (array length=coords_length): Array of variation coordinates to apply + * @coords_length: Number of coordinates to apply + * + * Applies a list of variation coordinates (in normalized units) + * to a font. + * + * Note that this overrides all existing variations set on @font. + * Axes not included in @coords will be effectively set to their + * default values. + * + * Note: Coordinates should be normalized to 2.14. + * + * Since: 1.4.2 + */ +void +hb_font_set_var_coords_normalized (hb_font_t *font, + const int *coords, /* 2.14 normalized */ + unsigned int coords_length) +{ + if (hb_object_is_immutable (font)) + return; + + font->serial_coords = ++font->serial; + + int *copy = coords_length ? (int *) hb_calloc (coords_length, sizeof (coords[0])) : nullptr; + int *unmapped = coords_length ? (int *) hb_calloc (coords_length, sizeof (coords[0])) : nullptr; + float *design_coords = coords_length ? (float *) hb_calloc (coords_length, sizeof (design_coords[0])) : nullptr; + + if (unlikely (coords_length && !(copy && unmapped && design_coords))) + { + hb_free (copy); + hb_free (unmapped); + hb_free (design_coords); + return; + } + + if (coords_length) + { + hb_memcpy (copy, coords, coords_length * sizeof (coords[0])); + hb_memcpy (unmapped, coords, coords_length * sizeof (coords[0])); + } + + /* Best effort design coords simulation */ + font->face->table.avar->unmap_coords (unmapped, coords_length); + for (unsigned int i = 0; i < coords_length; ++i) + design_coords[i] = font->face->table.fvar->unnormalize_axis_value (i, unmapped[i]); + hb_free (unmapped); + + _hb_font_adopt_var_coords (font, copy, design_coords, coords_length); +} + +/** + * hb_font_get_var_coords_normalized: + * @font: #hb_font_t to work upon + * @length: (out): Number of coordinates retrieved + * + * Fetches the list of normalized variation coordinates currently + * set on a font. + * + * Note that this returned array may only contain values for some + * (or none) of the axes; omitted axes effectively have zero values. + * + * Return value is valid as long as variation coordinates of the font + * are not modified. + * + * Return value: coordinates array + * + * Since: 1.4.2 + */ +const int * +hb_font_get_var_coords_normalized (hb_font_t *font, + unsigned int *length) +{ + if (length) + *length = font->num_coords; + + return font->coords; +} + +/** + * hb_font_get_var_coords_design: + * @font: #hb_font_t to work upon + * @length: (out): Number of coordinates retrieved + * + * Fetches the list of variation coordinates (in design-space units) currently + * set on a font. + * + * Note that this returned array may only contain values for some + * (or none) of the axes; omitted axes effectively have their default + * values. + * + * Return value is valid as long as variation coordinates of the font + * are not modified. + * + * Return value: coordinates array + * + * Since: 3.3.0 + */ +const float * +hb_font_get_var_coords_design (hb_font_t *font, + unsigned int *length) +{ + if (length) + *length = font->num_coords; + + return font->design_coords; +} +#endif + +#ifndef HB_DISABLE_DEPRECATED +/* + * Deprecated get_glyph_func(): + */ + +struct hb_trampoline_closure_t +{ + void *user_data; + hb_destroy_func_t destroy; + unsigned int ref_count; +}; + +template +struct hb_trampoline_t +{ + hb_trampoline_closure_t closure; /* Must be first. */ + FuncType func; +}; + +template +static hb_trampoline_t * +trampoline_create (FuncType func, + void *user_data, + hb_destroy_func_t destroy) +{ + typedef hb_trampoline_t trampoline_t; + + trampoline_t *trampoline = (trampoline_t *) hb_calloc (1, sizeof (trampoline_t)); + + if (unlikely (!trampoline)) + return nullptr; + + trampoline->closure.user_data = user_data; + trampoline->closure.destroy = destroy; + trampoline->closure.ref_count = 1; + trampoline->func = func; + + return trampoline; +} + +static void +trampoline_reference (hb_trampoline_closure_t *closure) +{ + closure->ref_count++; +} + +static void +trampoline_destroy (void *user_data) +{ + hb_trampoline_closure_t *closure = (hb_trampoline_closure_t *) user_data; + + if (--closure->ref_count) + return; + + if (closure->destroy) + closure->destroy (closure->user_data); + hb_free (closure); +} + +typedef hb_trampoline_t hb_font_get_glyph_trampoline_t; + +static hb_bool_t +hb_font_get_nominal_glyph_trampoline (hb_font_t *font, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data) +{ + hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data; + return trampoline->func (font, font_data, unicode, 0, glyph, trampoline->closure.user_data); +} + +static hb_bool_t +hb_font_get_variation_glyph_trampoline (hb_font_t *font, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data) +{ + hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data; + return trampoline->func (font, font_data, unicode, variation_selector, glyph, trampoline->closure.user_data); +} + +/** + * hb_font_funcs_set_glyph_func: + * @ffuncs: The font-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): callback function + * @user_data: data to pass to @func + * @destroy: (nullable): function to call when @user_data is not needed anymore + * + * Deprecated. Use hb_font_funcs_set_nominal_glyph_func() and + * hb_font_funcs_set_variation_glyph_func() instead. + * + * Since: 0.9.2 + * Deprecated: 1.2.3 + **/ +void +hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_func_t func, + void *user_data, + hb_destroy_func_t destroy /* May be NULL. */) +{ + if (hb_object_is_immutable (ffuncs)) + { + if (destroy) + destroy (user_data); + return; + } + + hb_font_get_glyph_trampoline_t *trampoline; + + trampoline = trampoline_create (func, user_data, destroy); + if (unlikely (!trampoline)) + { + if (destroy) + destroy (user_data); + return; + } + + /* Since we pass it to two destroying functions. */ + trampoline_reference (&trampoline->closure); + + hb_font_funcs_set_nominal_glyph_func (ffuncs, + hb_font_get_nominal_glyph_trampoline, + trampoline, + trampoline_destroy); + + hb_font_funcs_set_variation_glyph_func (ffuncs, + hb_font_get_variation_glyph_trampoline, + trampoline, + trampoline_destroy); +} +#endif + + +void +hb_font_funcs_set_glyph_shape_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_shape_func_t func, + void *user_data, + hb_destroy_func_t destroy /* May be NULL. */) +{ + hb_font_funcs_set_draw_glyph_func (ffuncs, func, user_data, destroy); +} diff --git a/gfx/harfbuzz/src/hb-font.h b/gfx/harfbuzz/src/hb-font.h new file mode 100644 index 0000000000..f3b589bd0d --- /dev/null +++ b/gfx/harfbuzz/src/hb-font.h @@ -0,0 +1,1196 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_FONT_H +#define HB_FONT_H + +#include "hb-common.h" +#include "hb-face.h" +#include "hb-draw.h" +#include "hb-paint.h" + +HB_BEGIN_DECLS + +/* + * hb_font_funcs_t + */ + +/** + * hb_font_funcs_t: + * + * Data type containing a set of virtual methods used for + * working on #hb_font_t font objects. + * + * HarfBuzz provides a lightweight default function for each of + * the methods in #hb_font_funcs_t. Client programs can implement + * their own replacements for the individual font functions, as + * needed, and replace the default by calling the setter for a + * method. + * + **/ +typedef struct hb_font_funcs_t hb_font_funcs_t; + +HB_EXTERN hb_font_funcs_t * +hb_font_funcs_create (void); + +HB_EXTERN hb_font_funcs_t * +hb_font_funcs_get_empty (void); + +HB_EXTERN hb_font_funcs_t * +hb_font_funcs_reference (hb_font_funcs_t *ffuncs); + +HB_EXTERN void +hb_font_funcs_destroy (hb_font_funcs_t *ffuncs); + +HB_EXTERN hb_bool_t +hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + + +HB_EXTERN void * +hb_font_funcs_get_user_data (const hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key); + + +HB_EXTERN void +hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs); + +HB_EXTERN hb_bool_t +hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs); + + +/* font extents */ + +/** + * hb_font_extents_t: + * @ascender: The height of typographic ascenders. + * @descender: The depth of typographic descenders. + * @line_gap: The suggested line-spacing gap. + * + * Font-wide extent values, measured in font units. + * + * Note that typically @ascender is positive and @descender + * negative, in coordinate systems that grow up. + **/ +typedef struct hb_font_extents_t { + hb_position_t ascender; + hb_position_t descender; + hb_position_t line_gap; + /*< private >*/ + hb_position_t reserved9; + hb_position_t reserved8; + hb_position_t reserved7; + hb_position_t reserved6; + hb_position_t reserved5; + hb_position_t reserved4; + hb_position_t reserved3; + hb_position_t reserved2; + hb_position_t reserved1; +} hb_font_extents_t; + +/* func types */ + +/** + * hb_font_get_font_extents_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @extents: (out): The font extents retrieved + * @user_data: User data pointer passed by the caller + * + * This method should retrieve the extents for a font. + * + **/ +typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data, + hb_font_extents_t *extents, + void *user_data); + +/** + * hb_font_get_font_h_extents_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a font, for horizontal-direction + * text segments. Extents must be returned in an #hb_glyph_extents output + * parameter. + * + **/ +typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t; + +/** + * hb_font_get_font_v_extents_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a font, for vertical-direction + * text segments. Extents must be returned in an #hb_glyph_extents output + * parameter. + * + **/ +typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t; + + +/** + * hb_font_get_nominal_glyph_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @unicode: The Unicode code point to query + * @glyph: (out): The glyph ID retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the nominal glyph ID for a specified Unicode code + * point. Glyph IDs must be returned in a #hb_codepoint_t output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_nominal_glyph_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data); + +/** + * hb_font_get_variation_glyph_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @unicode: The Unicode code point to query + * @variation_selector: The variation-selector code point to query + * @glyph: (out): The glyph ID retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph ID for a specified Unicode code point + * followed by a specified Variation Selector code point. Glyph IDs must be + * returned in a #hb_codepoint_t output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_variation_glyph_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data); + + +/** + * hb_font_get_nominal_glyphs_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @count: number of code points to query + * @first_unicode: The first Unicode code point to query + * @unicode_stride: The stride between successive code points + * @first_glyph: (out): The first glyph ID retrieved + * @glyph_stride: The stride between successive glyph IDs + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the nominal glyph IDs for a sequence of + * Unicode code points. Glyph IDs must be returned in a #hb_codepoint_t + * output parameter. + * + * Return value: the number of code points processed + * + **/ +typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void *font_data, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + void *user_data); + +/** + * hb_font_get_glyph_advance_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph. The + * method must return an #hb_position_t. + * + * Return value: The advance of @glyph within @font + * + **/ +typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + void *user_data); + +/** + * hb_font_get_glyph_h_advance_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph, in + * horizontal-direction text segments. Advances must be returned in + * an #hb_position_t output parameter. + * + **/ +typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t; + +/** + * hb_font_get_glyph_v_advance_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph, in + * vertical-direction text segments. Advances must be returned in + * an #hb_position_t output parameter. + * + **/ +typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t; + +/** + * hb_font_get_glyph_advances_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: The stride between successive advances + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs. + * + **/ +typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_data, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + void *user_data); + +/** + * hb_font_get_glyph_h_advances_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs, in + * horizontal-direction text segments. + * + **/ +typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t; + +/** + * hb_font_get_glyph_v_advances_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs, in + * vertical-direction text segments. + * + **/ +typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t; + +/** + * hb_font_get_glyph_origin_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @x: (out): The X coordinate of the origin + * @y: (out): The Y coordinate of the origin + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph. Each coordinate must be returned in an #hb_position_t + * output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_origin_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y, + void *user_data); + +/** + * hb_font_get_glyph_h_origin_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph, for horizontal-direction text segments. Each + * coordinate must be returned in an #hb_position_t output parameter. + * + **/ +typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t; + +/** + * hb_font_get_glyph_v_origin_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph, for vertical-direction text segments. Each coordinate + * must be returned in an #hb_position_t output parameter. + * + **/ +typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t; + +/** + * hb_font_get_glyph_kerning_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @first_glyph: The glyph ID of the first glyph in the glyph pair + * @second_glyph: The glyph ID of the second glyph in the glyph pair + * @user_data: User data pointer passed by the caller + * + * This method should retrieve the kerning-adjustment value for a glyph-pair in + * the specified font, for horizontal text segments. + * + **/ +typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, + void *user_data); +/** + * hb_font_get_glyph_h_kerning_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the kerning-adjustment value for a glyph-pair in + * the specified font, for horizontal text segments. + * + **/ +typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t; + + +/** + * hb_font_get_glyph_extents_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @extents: (out): The #hb_glyph_extents_t retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a specified glyph. Extents must be + * returned in an #hb_glyph_extents output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data); + +/** + * hb_font_get_glyph_contour_point_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @point_index: The contour-point index to query + * @x: (out): The X value retrieved for the contour point + * @y: (out): The Y value retrieved for the contour point + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) for a + * specified contour point in a glyph. Each coordinate must be returned as + * an #hb_position_t output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_contour_point_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, unsigned int point_index, + hb_position_t *x, hb_position_t *y, + void *user_data); + + +/** + * hb_font_get_glyph_name_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @name: (out) (array length=size): Name string retrieved for the glyph ID + * @size: Length of the glyph-name string retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph name that corresponds to a + * glyph ID. The name should be returned in a string output parameter. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_name_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data); + +/** + * hb_font_get_glyph_from_name_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @name: (array length=len): The name string to query + * @len: The length of the name queried + * @glyph: (out): The glyph ID retrieved + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph ID that corresponds to a glyph-name + * string. + * + * Return value: `true` if data found, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *font_data, + const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data); + +/** + * hb_font_get_glyph_shape_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @draw_funcs: The draw functions to send the shape data to + * @draw_data: The data accompanying the draw functions + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * Since: 4.0.0 + * Deprecated: 7.0.0: Use #hb_font_draw_glyph_func_t instead + **/ +typedef void (*hb_font_get_glyph_shape_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, void *draw_data, + void *user_data); + +/** + * hb_font_draw_glyph_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @draw_funcs: The draw functions to send the shape data to + * @draw_data: The data accompanying the draw functions + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * Since: 7.0.0 + * + **/ +typedef void (*hb_font_draw_glyph_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, void *draw_data, + void *user_data); + +/** + * hb_font_paint_glyph_func_t: + * @font: #hb_font_t to work upon + * @font_data: @font user data pointer + * @glyph: The glyph ID to query + * @paint_funcs: The paint functions to use + * @paint_data: The data accompanying the paint functions + * @palette_index: The color palette to use + * @foreground: The foreground color + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * Since: 7.0.0 + */ +typedef void (*hb_font_paint_glyph_func_t) (hb_font_t *font, void *font_data, + hb_codepoint_t glyph, + hb_paint_funcs_t *paint_funcs, void *paint_data, + unsigned int palette_index, + hb_color_t foreground, + void *user_data); + +/* func setters */ + +/** + * hb_font_funcs_set_font_h_extents_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_font_h_extents_func_t. + * + * Since: 1.1.2 + **/ +HB_EXTERN void +hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs, + hb_font_get_font_h_extents_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_font_v_extents_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_font_v_extents_func_t. + * + * Since: 1.1.2 + **/ +HB_EXTERN void +hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs, + hb_font_get_font_v_extents_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_nominal_glyph_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_nominal_glyph_func_t. + * + * Since: 1.2.3 + **/ +HB_EXTERN void +hb_font_funcs_set_nominal_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_get_nominal_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_nominal_glyphs_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_nominal_glyphs_func_t. + * + * Since: 2.0.0 + **/ +HB_EXTERN void +hb_font_funcs_set_nominal_glyphs_func (hb_font_funcs_t *ffuncs, + hb_font_get_nominal_glyphs_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_variation_glyph_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_variation_glyph_func_t. + * + * Since: 1.2.3 + **/ +HB_EXTERN void +hb_font_funcs_set_variation_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_get_variation_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_h_advance_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_h_advance_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_h_advance_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_v_advance_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_v_advance_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_v_advance_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_h_advances_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_h_advances_func_t. + * + * Since: 1.8.6 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_h_advances_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_h_advances_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_v_advances_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_v_advances_func_t. + * + * Since: 1.8.6 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_v_advances_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_v_advances_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_h_origin_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_h_origin_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_h_origin_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_v_origin_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_v_origin_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_v_origin_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_h_kerning_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_h_kerning_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_h_kerning_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_extents_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_extents_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_extents_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_contour_point_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_contour_point_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_contour_point_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_name_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_name_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_name_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_from_name_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_from_name_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_from_name_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_glyph_shape_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_get_glyph_shape_func_t, + * which is the same as #hb_font_draw_glyph_func_t. + * + * Since: 4.0.0 + * Deprecated: 7.0.0: Use hb_font_funcs_set_draw_glyph_func() instead + **/ +HB_EXTERN void +hb_font_funcs_set_glyph_shape_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_shape_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_draw_glyph_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_font_draw_glyph_func_t, + * which is the same as #hb_font_get_glyph_shape_func_t. + * + * Since: 7.0.0 + **/ +HB_EXTERN void +hb_font_funcs_set_draw_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_draw_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_paint_glyph_func: + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is no longer needed + * + * Sets the implementation function for #hb_font_paint_glyph_func_t. + * + * Since: 7.0.0 + */ +HB_EXTERN void +hb_font_funcs_set_paint_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_paint_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/* func dispatch */ + +HB_EXTERN hb_bool_t +hb_font_get_h_extents (hb_font_t *font, + hb_font_extents_t *extents); +HB_EXTERN hb_bool_t +hb_font_get_v_extents (hb_font_t *font, + hb_font_extents_t *extents); + +HB_EXTERN hb_bool_t +hb_font_get_nominal_glyph (hb_font_t *font, + hb_codepoint_t unicode, + hb_codepoint_t *glyph); +HB_EXTERN hb_bool_t +hb_font_get_variation_glyph (hb_font_t *font, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph); + +HB_EXTERN unsigned int +hb_font_get_nominal_glyphs (hb_font_t *font, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride); + +HB_EXTERN hb_position_t +hb_font_get_glyph_h_advance (hb_font_t *font, + hb_codepoint_t glyph); +HB_EXTERN hb_position_t +hb_font_get_glyph_v_advance (hb_font_t *font, + hb_codepoint_t glyph); + +HB_EXTERN void +hb_font_get_glyph_h_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride); +HB_EXTERN void +hb_font_get_glyph_v_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_h_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y); +HB_EXTERN hb_bool_t +hb_font_get_glyph_v_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y); + +HB_EXTERN hb_position_t +hb_font_get_glyph_h_kerning (hb_font_t *font, + hb_codepoint_t left_glyph, hb_codepoint_t right_glyph); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_contour_point (hb_font_t *font, + hb_codepoint_t glyph, unsigned int point_index, + hb_position_t *x, hb_position_t *y); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_name (hb_font_t *font, + hb_codepoint_t glyph, + char *name, unsigned int size); +HB_EXTERN hb_bool_t +hb_font_get_glyph_from_name (hb_font_t *font, + const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph); + +HB_EXTERN void +hb_font_get_glyph_shape (hb_font_t *font, + hb_codepoint_t glyph, + hb_draw_funcs_t *dfuncs, void *draw_data); + +HB_EXTERN void +hb_font_draw_glyph (hb_font_t *font, + hb_codepoint_t glyph, + hb_draw_funcs_t *dfuncs, void *draw_data); + +HB_EXTERN void +hb_font_paint_glyph (hb_font_t *font, + hb_codepoint_t glyph, + hb_paint_funcs_t *pfuncs, void *paint_data, + unsigned int palette_index, + hb_color_t foreground); + +/* high-level funcs, with fallback */ + +/* Calls either hb_font_get_nominal_glyph() if variation_selector is 0, + * otherwise calls hb_font_get_variation_glyph(). */ +HB_EXTERN hb_bool_t +hb_font_get_glyph (hb_font_t *font, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph); + +HB_EXTERN void +hb_font_get_extents_for_direction (hb_font_t *font, + hb_direction_t direction, + hb_font_extents_t *extents); +HB_EXTERN void +hb_font_get_glyph_advance_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); +HB_EXTERN void +hb_font_get_glyph_advances_for_direction (hb_font_t* font, + hb_direction_t direction, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride); +HB_EXTERN void +hb_font_get_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); +HB_EXTERN void +hb_font_add_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); +HB_EXTERN void +hb_font_subtract_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); + +HB_EXTERN void +hb_font_get_glyph_kerning_for_direction (hb_font_t *font, + hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_extents_for_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_glyph_extents_t *extents); + +HB_EXTERN hb_bool_t +hb_font_get_glyph_contour_point_for_origin (hb_font_t *font, + hb_codepoint_t glyph, unsigned int point_index, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y); + +/* Generates gidDDD if glyph has no name. */ +HB_EXTERN void +hb_font_glyph_to_string (hb_font_t *font, + hb_codepoint_t glyph, + char *s, unsigned int size); +/* Parses gidDDD and uniUUUU strings automatically. */ +HB_EXTERN hb_bool_t +hb_font_glyph_from_string (hb_font_t *font, + const char *s, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph); + + +/* + * hb_font_t + */ + +/* Fonts are very light-weight objects */ + +HB_EXTERN hb_font_t * +hb_font_create (hb_face_t *face); + +HB_EXTERN hb_font_t * +hb_font_create_sub_font (hb_font_t *parent); + +HB_EXTERN hb_font_t * +hb_font_get_empty (void); + +HB_EXTERN hb_font_t * +hb_font_reference (hb_font_t *font); + +HB_EXTERN void +hb_font_destroy (hb_font_t *font); + +HB_EXTERN hb_bool_t +hb_font_set_user_data (hb_font_t *font, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + + +HB_EXTERN void * +hb_font_get_user_data (const hb_font_t *font, + hb_user_data_key_t *key); + +HB_EXTERN void +hb_font_make_immutable (hb_font_t *font); + +HB_EXTERN hb_bool_t +hb_font_is_immutable (hb_font_t *font); + +HB_EXTERN unsigned int +hb_font_get_serial (hb_font_t *font); + +HB_EXTERN void +hb_font_changed (hb_font_t *font); + +HB_EXTERN void +hb_font_set_parent (hb_font_t *font, + hb_font_t *parent); + +HB_EXTERN hb_font_t * +hb_font_get_parent (hb_font_t *font); + +HB_EXTERN void +hb_font_set_face (hb_font_t *font, + hb_face_t *face); + +HB_EXTERN hb_face_t * +hb_font_get_face (hb_font_t *font); + + +HB_EXTERN void +hb_font_set_funcs (hb_font_t *font, + hb_font_funcs_t *klass, + void *font_data, + hb_destroy_func_t destroy); + +/* Be *very* careful with this function! */ +HB_EXTERN void +hb_font_set_funcs_data (hb_font_t *font, + void *font_data, + hb_destroy_func_t destroy); + + +HB_EXTERN void +hb_font_set_scale (hb_font_t *font, + int x_scale, + int y_scale); + +HB_EXTERN void +hb_font_get_scale (hb_font_t *font, + int *x_scale, + int *y_scale); + +/* + * A zero value means "no hinting in that direction" + */ +HB_EXTERN void +hb_font_set_ppem (hb_font_t *font, + unsigned int x_ppem, + unsigned int y_ppem); + +HB_EXTERN void +hb_font_get_ppem (hb_font_t *font, + unsigned int *x_ppem, + unsigned int *y_ppem); + +/* + * Point size per EM. Used for optical-sizing in CoreText. + * A value of zero means "not set". + */ +HB_EXTERN void +hb_font_set_ptem (hb_font_t *font, float ptem); + +HB_EXTERN float +hb_font_get_ptem (hb_font_t *font); + +HB_EXTERN void +hb_font_set_synthetic_bold (hb_font_t *font, + float x_embolden, float y_embolden, + hb_bool_t in_place); + +HB_EXTERN void +hb_font_get_synthetic_bold (hb_font_t *font, + float *x_embolden, float *y_embolden, + hb_bool_t *in_place); + +HB_EXTERN void +hb_font_set_synthetic_slant (hb_font_t *font, float slant); + +HB_EXTERN float +hb_font_get_synthetic_slant (hb_font_t *font); + +HB_EXTERN void +hb_font_set_variations (hb_font_t *font, + const hb_variation_t *variations, + unsigned int variations_length); + +HB_EXTERN void +hb_font_set_variation (hb_font_t *font, + hb_tag_t tag, + float value); + +HB_EXTERN void +hb_font_set_var_coords_design (hb_font_t *font, + const float *coords, + unsigned int coords_length); + +HB_EXTERN const float * +hb_font_get_var_coords_design (hb_font_t *font, + unsigned int *length); + +HB_EXTERN void +hb_font_set_var_coords_normalized (hb_font_t *font, + const int *coords, /* 2.14 normalized */ + unsigned int coords_length); + +HB_EXTERN const int * +hb_font_get_var_coords_normalized (hb_font_t *font, + unsigned int *length); + +/** + * HB_FONT_NO_VAR_NAMED_INSTANCE: + * + * Constant signifying that a font does not have any + * named-instance index set. This is the default of + * a font. + * + * Since: 7.0.0 + */ +#define HB_FONT_NO_VAR_NAMED_INSTANCE 0xFFFFFFFF + +HB_EXTERN void +hb_font_set_var_named_instance (hb_font_t *font, + unsigned int instance_index); + +HB_EXTERN unsigned int +hb_font_get_var_named_instance (hb_font_t *font); + +HB_END_DECLS + +#endif /* HB_FONT_H */ diff --git a/gfx/harfbuzz/src/hb-font.hh b/gfx/harfbuzz/src/hb-font.hh new file mode 100644 index 0000000000..f503575c34 --- /dev/null +++ b/gfx/harfbuzz/src/hb-font.hh @@ -0,0 +1,720 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_FONT_HH +#define HB_FONT_HH + +#include "hb.hh" + +#include "hb-face.hh" +#include "hb-shaper.hh" + + +/* + * hb_font_funcs_t + */ + +#define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \ + HB_FONT_FUNC_IMPLEMENT (get_,font_h_extents) \ + HB_FONT_FUNC_IMPLEMENT (get_,font_v_extents) \ + HB_FONT_FUNC_IMPLEMENT (get_,nominal_glyph) \ + HB_FONT_FUNC_IMPLEMENT (get_,nominal_glyphs) \ + HB_FONT_FUNC_IMPLEMENT (get_,variation_glyph) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_h_advance) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_v_advance) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_h_advances) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_v_advances) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_h_origin) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_v_origin) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_h_kerning) \ + HB_IF_NOT_DEPRECATED (HB_FONT_FUNC_IMPLEMENT (get_,glyph_v_kerning)) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_extents) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_contour_point) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_name) \ + HB_FONT_FUNC_IMPLEMENT (get_,glyph_from_name) \ + HB_FONT_FUNC_IMPLEMENT (,draw_glyph) \ + HB_FONT_FUNC_IMPLEMENT (,paint_glyph) \ + /* ^--- Add new callbacks here */ + +struct hb_font_funcs_t +{ + hb_object_header_t header; + + struct { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) void *name; + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } *user_data; + + struct { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) hb_destroy_func_t name; + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } *destroy; + + /* Don't access these directly. Call font->get_*() instead. */ + union get_t { + struct get_funcs_t { +#define HB_FONT_FUNC_IMPLEMENT(get_,name) hb_font_##get_##name##_func_t name; + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } f; + void (*array[0 +#define HB_FONT_FUNC_IMPLEMENT(get_,name) +1 + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + ]) (); + } get; +}; +DECLARE_NULL_INSTANCE (hb_font_funcs_t); + + +/* + * hb_font_t + */ + +#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INSTANTIATE_SHAPERS(shaper, font); +#include "hb-shaper-list.hh" +#undef HB_SHAPER_IMPLEMENT + +struct hb_font_t +{ + hb_object_header_t header; + unsigned int serial; + unsigned int serial_coords; + + hb_font_t *parent; + hb_face_t *face; + + int32_t x_scale; + int32_t y_scale; + + float x_embolden; + float y_embolden; + bool embolden_in_place; + int32_t x_strength; /* x_embolden, in scaled units. */ + int32_t y_strength; /* y_embolden, in scaled units. */ + + float slant; + float slant_xy; + + float x_multf; + float y_multf; + int64_t x_mult; + int64_t y_mult; + + unsigned int x_ppem; + unsigned int y_ppem; + + float ptem; + + /* Font variation coordinates. */ + unsigned int instance_index; + unsigned int num_coords; + int *coords; + float *design_coords; + + hb_font_funcs_t *klass; + void *user_data; + hb_destroy_func_t destroy; + + hb_shaper_object_dataset_t data; /* Various shaper data. */ + + + /* Convert from font-space to user-space */ + int64_t dir_mult (hb_direction_t direction) + { return HB_DIRECTION_IS_VERTICAL(direction) ? y_mult : x_mult; } + hb_position_t em_scale_x (int16_t v) { return em_mult (v, x_mult); } + hb_position_t em_scale_y (int16_t v) { return em_mult (v, y_mult); } + hb_position_t em_scalef_x (float v) { return em_multf (v, x_multf); } + hb_position_t em_scalef_y (float v) { return em_multf (v, y_multf); } + float em_fscale_x (int16_t v) { return em_fmult (v, x_multf); } + float em_fscale_y (int16_t v) { return em_fmult (v, y_multf); } + float em_fscalef_x (float v) { return em_fmultf (v, x_multf); } + float em_fscalef_y (float v) { return em_fmultf (v, y_multf); } + hb_position_t em_scale_dir (int16_t v, hb_direction_t direction) + { return em_mult (v, dir_mult (direction)); } + + /* Convert from parent-font user-space to our user-space */ + hb_position_t parent_scale_x_distance (hb_position_t v) + { + if (unlikely (parent && parent->x_scale != x_scale)) + return (hb_position_t) (v * (int64_t) this->x_scale / this->parent->x_scale); + return v; + } + hb_position_t parent_scale_y_distance (hb_position_t v) + { + if (unlikely (parent && parent->y_scale != y_scale)) + return (hb_position_t) (v * (int64_t) this->y_scale / this->parent->y_scale); + return v; + } + hb_position_t parent_scale_x_position (hb_position_t v) + { return parent_scale_x_distance (v); } + hb_position_t parent_scale_y_position (hb_position_t v) + { return parent_scale_y_distance (v); } + + void parent_scale_distance (hb_position_t *x, hb_position_t *y) + { + *x = parent_scale_x_distance (*x); + *y = parent_scale_y_distance (*y); + } + void parent_scale_position (hb_position_t *x, hb_position_t *y) + { + *x = parent_scale_x_position (*x); + *y = parent_scale_y_position (*y); + } + + void scale_glyph_extents (hb_glyph_extents_t *extents) + { + float x1 = em_fscale_x (extents->x_bearing); + float y1 = em_fscale_y (extents->y_bearing); + float x2 = em_fscale_x (extents->x_bearing + extents->width); + float y2 = em_fscale_y (extents->y_bearing + extents->height); + + /* Apply slant. */ + if (slant_xy) + { + x1 += hb_min (y1 * slant_xy, y2 * slant_xy); + x2 += hb_max (y1 * slant_xy, y2 * slant_xy); + } + + extents->x_bearing = floorf (x1); + extents->y_bearing = floorf (y1); + extents->width = ceilf (x2) - extents->x_bearing; + extents->height = ceilf (y2) - extents->y_bearing; + + if (x_strength || y_strength) + { + /* Y */ + int y_shift = y_strength; + if (y_scale < 0) y_shift = -y_shift; + extents->y_bearing += y_shift; + extents->height -= y_shift; + + /* X */ + int x_shift = x_strength; + if (x_scale < 0) x_shift = -x_shift; + if (embolden_in_place) + extents->x_bearing -= x_shift / 2; + extents->width += x_shift; + } + } + + + /* Public getters */ + + HB_INTERNAL bool has_func (unsigned int i); + HB_INTERNAL bool has_func_set (unsigned int i); + + /* has_* ... */ +#define HB_FONT_FUNC_IMPLEMENT(get_,name) \ + bool \ + has_##name##_func () \ + { \ + hb_font_funcs_t *funcs = this->klass; \ + unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \ + return has_func (i); \ + } \ + bool \ + has_##name##_func_set () \ + { \ + hb_font_funcs_t *funcs = this->klass; \ + unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \ + return has_func_set (i); \ + } + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + + hb_bool_t get_font_h_extents (hb_font_extents_t *extents) + { + hb_memset (extents, 0, sizeof (*extents)); + return klass->get.f.font_h_extents (this, user_data, + extents, + !klass->user_data ? nullptr : klass->user_data->font_h_extents); + } + hb_bool_t get_font_v_extents (hb_font_extents_t *extents) + { + hb_memset (extents, 0, sizeof (*extents)); + return klass->get.f.font_v_extents (this, user_data, + extents, + !klass->user_data ? nullptr : klass->user_data->font_v_extents); + } + + bool has_glyph (hb_codepoint_t unicode) + { + hb_codepoint_t glyph; + return get_nominal_glyph (unicode, &glyph); + } + + hb_bool_t get_nominal_glyph (hb_codepoint_t unicode, + hb_codepoint_t *glyph, + hb_codepoint_t not_found = 0) + { + *glyph = not_found; + return klass->get.f.nominal_glyph (this, user_data, + unicode, glyph, + !klass->user_data ? nullptr : klass->user_data->nominal_glyph); + } + unsigned int get_nominal_glyphs (unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride) + { + return klass->get.f.nominal_glyphs (this, user_data, + count, + first_unicode, unicode_stride, + first_glyph, glyph_stride, + !klass->user_data ? nullptr : klass->user_data->nominal_glyphs); + } + + hb_bool_t get_variation_glyph (hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + hb_codepoint_t not_found = 0) + { + *glyph = not_found; + return klass->get.f.variation_glyph (this, user_data, + unicode, variation_selector, glyph, + !klass->user_data ? nullptr : klass->user_data->variation_glyph); + } + + hb_position_t get_glyph_h_advance (hb_codepoint_t glyph) + { + return klass->get.f.glyph_h_advance (this, user_data, + glyph, + !klass->user_data ? nullptr : klass->user_data->glyph_h_advance); + } + + hb_position_t get_glyph_v_advance (hb_codepoint_t glyph) + { + return klass->get.f.glyph_v_advance (this, user_data, + glyph, + !klass->user_data ? nullptr : klass->user_data->glyph_v_advance); + } + + void get_glyph_h_advances (unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride) + { + return klass->get.f.glyph_h_advances (this, user_data, + count, + first_glyph, glyph_stride, + first_advance, advance_stride, + !klass->user_data ? nullptr : klass->user_data->glyph_h_advances); + } + + void get_glyph_v_advances (unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride) + { + return klass->get.f.glyph_v_advances (this, user_data, + count, + first_glyph, glyph_stride, + first_advance, advance_stride, + !klass->user_data ? nullptr : klass->user_data->glyph_v_advances); + } + + hb_bool_t get_glyph_h_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + *x = *y = 0; + return klass->get.f.glyph_h_origin (this, user_data, + glyph, x, y, + !klass->user_data ? nullptr : klass->user_data->glyph_h_origin); + } + + hb_bool_t get_glyph_v_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + *x = *y = 0; + return klass->get.f.glyph_v_origin (this, user_data, + glyph, x, y, + !klass->user_data ? nullptr : klass->user_data->glyph_v_origin); + } + + hb_position_t get_glyph_h_kerning (hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph) + { +#ifdef HB_DISABLE_DEPRECATED + return 0; +#else + return klass->get.f.glyph_h_kerning (this, user_data, + left_glyph, right_glyph, + !klass->user_data ? nullptr : klass->user_data->glyph_h_kerning); +#endif + } + + hb_position_t get_glyph_v_kerning (hb_codepoint_t top_glyph, + hb_codepoint_t bottom_glyph) + { +#ifdef HB_DISABLE_DEPRECATED + return 0; +#else + return klass->get.f.glyph_v_kerning (this, user_data, + top_glyph, bottom_glyph, + !klass->user_data ? nullptr : klass->user_data->glyph_v_kerning); +#endif + } + + hb_bool_t get_glyph_extents (hb_codepoint_t glyph, + hb_glyph_extents_t *extents) + { + hb_memset (extents, 0, sizeof (*extents)); + return klass->get.f.glyph_extents (this, user_data, + glyph, + extents, + !klass->user_data ? nullptr : klass->user_data->glyph_extents); + } + + hb_bool_t get_glyph_contour_point (hb_codepoint_t glyph, unsigned int point_index, + hb_position_t *x, hb_position_t *y) + { + *x = *y = 0; + return klass->get.f.glyph_contour_point (this, user_data, + glyph, point_index, + x, y, + !klass->user_data ? nullptr : klass->user_data->glyph_contour_point); + } + + hb_bool_t get_glyph_name (hb_codepoint_t glyph, + char *name, unsigned int size) + { + if (size) *name = '\0'; + return klass->get.f.glyph_name (this, user_data, + glyph, + name, size, + !klass->user_data ? nullptr : klass->user_data->glyph_name); + } + + hb_bool_t get_glyph_from_name (const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph) + { + *glyph = 0; + if (len == -1) len = strlen (name); + return klass->get.f.glyph_from_name (this, user_data, + name, len, + glyph, + !klass->user_data ? nullptr : klass->user_data->glyph_from_name); + } + + void draw_glyph (hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, void *draw_data) + { + klass->get.f.draw_glyph (this, user_data, + glyph, + draw_funcs, draw_data, + !klass->user_data ? nullptr : klass->user_data->draw_glyph); + } + + void paint_glyph (hb_codepoint_t glyph, + hb_paint_funcs_t *paint_funcs, void *paint_data, + unsigned int palette, + hb_color_t foreground) + { + klass->get.f.paint_glyph (this, user_data, + glyph, + paint_funcs, paint_data, + palette, foreground, + !klass->user_data ? nullptr : klass->user_data->paint_glyph); + } + + /* A bit higher-level, and with fallback */ + + void get_h_extents_with_fallback (hb_font_extents_t *extents) + { + if (!get_font_h_extents (extents)) + { + extents->ascender = y_scale * .8; + extents->descender = extents->ascender - y_scale; + extents->line_gap = 0; + } + } + void get_v_extents_with_fallback (hb_font_extents_t *extents) + { + if (!get_font_v_extents (extents)) + { + extents->ascender = x_scale / 2; + extents->descender = extents->ascender - x_scale; + extents->line_gap = 0; + } + } + + void get_extents_for_direction (hb_direction_t direction, + hb_font_extents_t *extents) + { + if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) + get_h_extents_with_fallback (extents); + else + get_v_extents_with_fallback (extents); + } + + void get_glyph_advance_for_direction (hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + *x = *y = 0; + if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) + *x = get_glyph_h_advance (glyph); + else + *y = get_glyph_v_advance (glyph); + } + void get_glyph_advances_for_direction (hb_direction_t direction, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) + { + if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) + get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); + else + get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); + } + + void guess_v_origin_minus_h_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + *x = get_glyph_h_advance (glyph) / 2; + + hb_font_extents_t extents; + get_h_extents_with_fallback (&extents); + *y = extents.ascender; + } + + void get_glyph_h_origin_with_fallback (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + if (!get_glyph_h_origin (glyph, x, y) && + get_glyph_v_origin (glyph, x, y)) + { + hb_position_t dx, dy; + guess_v_origin_minus_h_origin (glyph, &dx, &dy); + *x -= dx; *y -= dy; + } + } + void get_glyph_v_origin_with_fallback (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + if (!get_glyph_v_origin (glyph, x, y) && + get_glyph_h_origin (glyph, x, y)) + { + hb_position_t dx, dy; + guess_v_origin_minus_h_origin (glyph, &dx, &dy); + *x += dx; *y += dy; + } + } + + void get_glyph_origin_for_direction (hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) + get_glyph_h_origin_with_fallback (glyph, x, y); + else + get_glyph_v_origin_with_fallback (glyph, x, y); + } + + void add_glyph_h_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y); + + *x += origin_x; + *y += origin_y; + } + void add_glyph_v_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y); + + *x += origin_x; + *y += origin_y; + } + void add_glyph_origin_for_direction (hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_origin_for_direction (glyph, direction, &origin_x, &origin_y); + + *x += origin_x; + *y += origin_y; + } + + void subtract_glyph_h_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y); + + *x -= origin_x; + *y -= origin_y; + } + void subtract_glyph_v_origin (hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y); + + *x -= origin_x; + *y -= origin_y; + } + void subtract_glyph_origin_for_direction (hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + hb_position_t origin_x, origin_y; + + get_glyph_origin_for_direction (glyph, direction, &origin_x, &origin_y); + + *x -= origin_x; + *y -= origin_y; + } + + void get_glyph_kerning_for_direction (hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) { + *y = 0; + *x = get_glyph_h_kerning (first_glyph, second_glyph); + } else { + *x = 0; + *y = get_glyph_v_kerning (first_glyph, second_glyph); + } + } + + hb_bool_t get_glyph_extents_for_origin (hb_codepoint_t glyph, + hb_direction_t direction, + hb_glyph_extents_t *extents) + { + hb_bool_t ret = get_glyph_extents (glyph, extents); + + if (ret) + subtract_glyph_origin_for_direction (glyph, direction, &extents->x_bearing, &extents->y_bearing); + + return ret; + } + + hb_bool_t get_glyph_contour_point_for_origin (hb_codepoint_t glyph, unsigned int point_index, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) + { + hb_bool_t ret = get_glyph_contour_point (glyph, point_index, x, y); + + if (ret) + subtract_glyph_origin_for_direction (glyph, direction, x, y); + + return ret; + } + + /* Generates gidDDD if glyph has no name. */ + void + glyph_to_string (hb_codepoint_t glyph, + char *s, unsigned int size) + { + if (get_glyph_name (glyph, s, size)) return; + + if (size && snprintf (s, size, "gid%u", glyph) < 0) + *s = '\0'; + } + + /* Parses gidDDD and uniUUUU strings automatically. */ + hb_bool_t + glyph_from_string (const char *s, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph) + { + if (get_glyph_from_name (s, len, glyph)) return true; + + if (len == -1) len = strlen (s); + + /* Straight glyph index. */ + if (hb_codepoint_parse (s, len, 10, glyph)) + return true; + + if (len > 3) + { + /* gidDDD syntax for glyph indices. */ + if (0 == strncmp (s, "gid", 3) && + hb_codepoint_parse (s + 3, len - 3, 10, glyph)) + return true; + + /* uniUUUU and other Unicode character indices. */ + hb_codepoint_t unichar; + if (0 == strncmp (s, "uni", 3) && + hb_codepoint_parse (s + 3, len - 3, 16, &unichar) && + get_nominal_glyph (unichar, glyph)) + return true; + } + + return false; + } + + void mults_changed () + { + float upem = face->get_upem (); + + x_multf = x_scale / upem; + y_multf = y_scale / upem; + bool x_neg = x_scale < 0; + x_mult = (x_neg ? -((int64_t) -x_scale << 16) : ((int64_t) x_scale << 16)) / upem; + bool y_neg = y_scale < 0; + y_mult = (y_neg ? -((int64_t) -y_scale << 16) : ((int64_t) y_scale << 16)) / upem; + + x_strength = fabsf (roundf (x_scale * x_embolden)); + y_strength = fabsf (roundf (y_scale * y_embolden)); + + slant_xy = y_scale ? slant * x_scale / y_scale : 0.f; + + data.fini (); + } + + hb_position_t em_mult (int16_t v, int64_t mult) + { return (hb_position_t) ((v * mult + 32768) >> 16); } + hb_position_t em_multf (float v, float mult) + { return (hb_position_t) roundf (em_fmultf (v, mult)); } + float em_fmultf (float v, float mult) + { return v * mult; } + float em_fmult (int16_t v, float mult) + { return (float) v * mult; } +}; +DECLARE_NULL_INSTANCE (hb_font_t); + + +#endif /* HB_FONT_HH */ diff --git a/gfx/harfbuzz/src/hb-ft-colr.hh b/gfx/harfbuzz/src/hb-ft-colr.hh new file mode 100644 index 0000000000..fa5712f9b3 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ft-colr.hh @@ -0,0 +1,567 @@ +/* + * Copyright © 2022 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_FT_COLR_HH +#define HB_FT_COLR_HH + +#include "hb.hh" + +#include "hb-paint-extents.hh" + +#include FT_COLOR_H + + +static hb_paint_composite_mode_t +_hb_ft_paint_composite_mode (FT_Composite_Mode mode) +{ + switch (mode) + { + case FT_COLR_COMPOSITE_CLEAR: return HB_PAINT_COMPOSITE_MODE_CLEAR; + case FT_COLR_COMPOSITE_SRC: return HB_PAINT_COMPOSITE_MODE_SRC; + case FT_COLR_COMPOSITE_DEST: return HB_PAINT_COMPOSITE_MODE_DEST; + case FT_COLR_COMPOSITE_SRC_OVER: return HB_PAINT_COMPOSITE_MODE_SRC_OVER; + case FT_COLR_COMPOSITE_DEST_OVER: return HB_PAINT_COMPOSITE_MODE_DEST_OVER; + case FT_COLR_COMPOSITE_SRC_IN: return HB_PAINT_COMPOSITE_MODE_SRC_IN; + case FT_COLR_COMPOSITE_DEST_IN: return HB_PAINT_COMPOSITE_MODE_DEST_IN; + case FT_COLR_COMPOSITE_SRC_OUT: return HB_PAINT_COMPOSITE_MODE_SRC_OUT; + case FT_COLR_COMPOSITE_DEST_OUT: return HB_PAINT_COMPOSITE_MODE_DEST_OUT; + case FT_COLR_COMPOSITE_SRC_ATOP: return HB_PAINT_COMPOSITE_MODE_SRC_ATOP; + case FT_COLR_COMPOSITE_DEST_ATOP: return HB_PAINT_COMPOSITE_MODE_DEST_ATOP; + case FT_COLR_COMPOSITE_XOR: return HB_PAINT_COMPOSITE_MODE_XOR; + case FT_COLR_COMPOSITE_PLUS: return HB_PAINT_COMPOSITE_MODE_PLUS; + case FT_COLR_COMPOSITE_SCREEN: return HB_PAINT_COMPOSITE_MODE_SCREEN; + case FT_COLR_COMPOSITE_OVERLAY: return HB_PAINT_COMPOSITE_MODE_OVERLAY; + case FT_COLR_COMPOSITE_DARKEN: return HB_PAINT_COMPOSITE_MODE_DARKEN; + case FT_COLR_COMPOSITE_LIGHTEN: return HB_PAINT_COMPOSITE_MODE_LIGHTEN; + case FT_COLR_COMPOSITE_COLOR_DODGE: return HB_PAINT_COMPOSITE_MODE_COLOR_DODGE; + case FT_COLR_COMPOSITE_COLOR_BURN: return HB_PAINT_COMPOSITE_MODE_COLOR_BURN; + case FT_COLR_COMPOSITE_HARD_LIGHT: return HB_PAINT_COMPOSITE_MODE_HARD_LIGHT; + case FT_COLR_COMPOSITE_SOFT_LIGHT: return HB_PAINT_COMPOSITE_MODE_SOFT_LIGHT; + case FT_COLR_COMPOSITE_DIFFERENCE: return HB_PAINT_COMPOSITE_MODE_DIFFERENCE; + case FT_COLR_COMPOSITE_EXCLUSION: return HB_PAINT_COMPOSITE_MODE_EXCLUSION; + case FT_COLR_COMPOSITE_MULTIPLY: return HB_PAINT_COMPOSITE_MODE_MULTIPLY; + case FT_COLR_COMPOSITE_HSL_HUE: return HB_PAINT_COMPOSITE_MODE_HSL_HUE; + case FT_COLR_COMPOSITE_HSL_SATURATION: return HB_PAINT_COMPOSITE_MODE_HSL_SATURATION; + case FT_COLR_COMPOSITE_HSL_COLOR: return HB_PAINT_COMPOSITE_MODE_HSL_COLOR; + case FT_COLR_COMPOSITE_HSL_LUMINOSITY: return HB_PAINT_COMPOSITE_MODE_HSL_LUMINOSITY; + + case FT_COLR_COMPOSITE_MAX: HB_FALLTHROUGH; + default: return HB_PAINT_COMPOSITE_MODE_CLEAR; + } +} + +typedef struct hb_ft_paint_context_t hb_ft_paint_context_t; + +static void +_hb_ft_paint (hb_ft_paint_context_t *c, + FT_OpaquePaint opaque_paint); + +struct hb_ft_paint_context_t +{ + hb_ft_paint_context_t (const hb_ft_font_t *ft_font, + hb_font_t *font, + hb_paint_funcs_t *paint_funcs, void *paint_data, + FT_Color *palette, + unsigned palette_index, + hb_color_t foreground) : + ft_font (ft_font), font(font), + funcs (paint_funcs), data (paint_data), + palette (palette), palette_index (palette_index), foreground (foreground) {} + + void recurse (FT_OpaquePaint paint) + { + if (unlikely (depth_left <= 0 || edge_count <= 0)) return; + depth_left--; + edge_count--; + _hb_ft_paint (this, paint); + depth_left++; + } + + const hb_ft_font_t *ft_font; + hb_font_t *font; + hb_paint_funcs_t *funcs; + void *data; + FT_Color *palette; + unsigned palette_index; + hb_color_t foreground; + int depth_left = HB_MAX_NESTING_LEVEL; + int edge_count = HB_COLRV1_MAX_EDGE_COUNT; +}; + +static unsigned +_hb_ft_color_line_get_color_stops (hb_color_line_t *color_line, + void *color_line_data, + unsigned int start, + unsigned int *count, + hb_color_stop_t *color_stops, + void *user_data) +{ + FT_ColorLine *cl = (FT_ColorLine *) color_line_data; + hb_ft_paint_context_t *c = (hb_ft_paint_context_t *) user_data; + + if (count) + { + FT_ColorStop stop; + unsigned wrote = 0; + FT_ColorStopIterator iter = cl->color_stop_iterator; + + if (start >= cl->color_stop_iterator.num_color_stops) + { + *count = 0; + return cl->color_stop_iterator.num_color_stops; + } + + while (cl->color_stop_iterator.current_color_stop < start) + FT_Get_Colorline_Stops(c->ft_font->ft_face, + &stop, + &cl->color_stop_iterator); + + while (count && *count && + FT_Get_Colorline_Stops(c->ft_font->ft_face, + &stop, + &cl->color_stop_iterator)) + { + // https://github.com/harfbuzz/harfbuzz/issues/4013 + if (sizeof stop.stop_offset == 2) + color_stops->offset = stop.stop_offset / 16384.f; + else + color_stops->offset = stop.stop_offset / 65536.f; + + color_stops->is_foreground = stop.color.palette_index == 0xFFFF; + if (color_stops->is_foreground) + color_stops->color = HB_COLOR (hb_color_get_blue (c->foreground), + hb_color_get_green (c->foreground), + hb_color_get_red (c->foreground), + (hb_color_get_alpha (c->foreground) * stop.color.alpha) >> 14); + else + { + hb_color_t color; + if (c->funcs->custom_palette_color (c->data, stop.color.palette_index, &color)) + { + color_stops->color = HB_COLOR (hb_color_get_blue (color), + hb_color_get_green (color), + hb_color_get_red (color), + (hb_color_get_alpha (color) * stop.color.alpha) >> 14); + } + else + { + FT_Color ft_color = c->palette[stop.color.palette_index]; + color_stops->color = HB_COLOR (ft_color.blue, + ft_color.green, + ft_color.red, + (ft_color.alpha * stop.color.alpha) >> 14); + } + } + + color_stops++; + wrote++; + } + + *count = wrote; + + // reset the iterator for next time + cl->color_stop_iterator = iter; + } + + return cl->color_stop_iterator.num_color_stops; +} + +static hb_paint_extend_t +_hb_ft_color_line_get_extend (hb_color_line_t *color_line, + void *color_line_data, + void *user_data) +{ + FT_ColorLine *c = (FT_ColorLine *) color_line_data; + switch (c->extend) + { + default: + case FT_COLR_PAINT_EXTEND_PAD: return HB_PAINT_EXTEND_PAD; + case FT_COLR_PAINT_EXTEND_REPEAT: return HB_PAINT_EXTEND_REPEAT; + case FT_COLR_PAINT_EXTEND_REFLECT: return HB_PAINT_EXTEND_REFLECT; + } +} + +void +_hb_ft_paint (hb_ft_paint_context_t *c, + FT_OpaquePaint opaque_paint) +{ + FT_Face ft_face = c->ft_font->ft_face; + FT_COLR_Paint paint; + if (!FT_Get_Paint (ft_face, opaque_paint, &paint)) + return; + + switch (paint.format) + { + case FT_COLR_PAINTFORMAT_COLR_LAYERS: + { + FT_OpaquePaint other_paint = {0}; + while (FT_Get_Paint_Layers (ft_face, + &paint.u.colr_layers.layer_iterator, + &other_paint)) + { + c->funcs->push_group (c->data); + c->recurse (other_paint); + c->funcs->pop_group (c->data, HB_PAINT_COMPOSITE_MODE_SRC_OVER); + } + } + break; + case FT_COLR_PAINTFORMAT_SOLID: + { + bool is_foreground = paint.u.solid.color.palette_index == 0xFFFF; + hb_color_t color; + if (is_foreground) + color = HB_COLOR (hb_color_get_blue (c->foreground), + hb_color_get_green (c->foreground), + hb_color_get_red (c->foreground), + (hb_color_get_alpha (c->foreground) * paint.u.solid.color.alpha) >> 14); + else + { + if (c->funcs->custom_palette_color (c->data, paint.u.solid.color.palette_index, &color)) + { + color = HB_COLOR (hb_color_get_blue (color), + hb_color_get_green (color), + hb_color_get_red (color), + (hb_color_get_alpha (color) * paint.u.solid.color.alpha) >> 14); + } + else + { + FT_Color ft_color = c->palette[paint.u.solid.color.palette_index]; + color = HB_COLOR (ft_color.blue, + ft_color.green, + ft_color.red, + (ft_color.alpha * paint.u.solid.color.alpha) >> 14); + } + } + c->funcs->color (c->data, is_foreground, color); + } + break; + case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: + { + hb_color_line_t cl = { + &paint.u.linear_gradient.colorline, + _hb_ft_color_line_get_color_stops, c, + _hb_ft_color_line_get_extend, nullptr + }; + + c->funcs->linear_gradient (c->data, &cl, + paint.u.linear_gradient.p0.x / 65536.f, + paint.u.linear_gradient.p0.y / 65536.f, + paint.u.linear_gradient.p1.x / 65536.f, + paint.u.linear_gradient.p1.y / 65536.f, + paint.u.linear_gradient.p2.x / 65536.f, + paint.u.linear_gradient.p2.y / 65536.f); + } + break; + case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: + { + hb_color_line_t cl = { + &paint.u.linear_gradient.colorline, + _hb_ft_color_line_get_color_stops, c, + _hb_ft_color_line_get_extend, nullptr + }; + + c->funcs->radial_gradient (c->data, &cl, + paint.u.radial_gradient.c0.x / 65536.f, + paint.u.radial_gradient.c0.y / 65536.f, + paint.u.radial_gradient.r0 / 65536.f, + paint.u.radial_gradient.c1.x / 65536.f, + paint.u.radial_gradient.c1.y / 65536.f, + paint.u.radial_gradient.r1 / 65536.f); + } + break; + case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: + { + hb_color_line_t cl = { + &paint.u.linear_gradient.colorline, + _hb_ft_color_line_get_color_stops, c, + _hb_ft_color_line_get_extend, nullptr + }; + + c->funcs->sweep_gradient (c->data, &cl, + paint.u.sweep_gradient.center.x / 65536.f, + paint.u.sweep_gradient.center.y / 65536.f, + (paint.u.sweep_gradient.start_angle / 65536.f + 1) * HB_PI, + (paint.u.sweep_gradient.end_angle / 65536.f + 1) * HB_PI); + } + break; + case FT_COLR_PAINTFORMAT_GLYPH: + { + c->funcs->push_inverse_root_transform (c->data, c->font); + c->ft_font->lock.unlock (); + c->funcs->push_clip_glyph (c->data, paint.u.glyph.glyphID, c->font); + c->ft_font->lock.lock (); + c->funcs->push_root_transform (c->data, c->font); + c->recurse (paint.u.glyph.paint); + c->funcs->pop_transform (c->data); + c->funcs->pop_clip (c->data); + c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_COLR_GLYPH: + { + FT_OpaquePaint other_paint = {0}; + if (FT_Get_Color_Glyph_Paint (ft_face, paint.u.colr_glyph.glyphID, + FT_COLOR_NO_ROOT_TRANSFORM, + &other_paint)) + { + bool has_clip_box; + FT_ClipBox clip_box; + has_clip_box = FT_Get_Color_Glyph_ClipBox (ft_face, paint.u.colr_glyph.glyphID, &clip_box); + + if (has_clip_box) + { + /* The FreeType ClipBox is in scaled coordinates, whereas we need + * unscaled clipbox here. Oh well... + */ + + float upem = c->font->face->get_upem (); + float xscale = upem / (c->font->x_scale ? c->font->x_scale : upem); + float yscale = upem / (c->font->y_scale ? c->font->y_scale : upem); + + c->funcs->push_clip_rectangle (c->data, + clip_box.bottom_left.x * xscale, + clip_box.bottom_left.y * yscale, + clip_box.top_right.x * xscale, + clip_box.top_right.y * yscale); + } + + c->recurse (other_paint); + + if (has_clip_box) + c->funcs->pop_clip (c->data); + } + } + break; + case FT_COLR_PAINTFORMAT_TRANSFORM: + { + c->funcs->push_transform (c->data, + paint.u.transform.affine.xx / 65536.f, + paint.u.transform.affine.yx / 65536.f, + paint.u.transform.affine.xy / 65536.f, + paint.u.transform.affine.yy / 65536.f, + paint.u.transform.affine.dx / 65536.f, + paint.u.transform.affine.dy / 65536.f); + c->recurse (paint.u.transform.paint); + c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_TRANSLATE: + { + float dx = paint.u.translate.dx / 65536.f; + float dy = paint.u.translate.dy / 65536.f; + + bool p1 = c->funcs->push_translate (c->data, dx, dy); + c->recurse (paint.u.translate.paint); + if (p1) c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_SCALE: + { + float dx = paint.u.scale.center_x / 65536.f; + float dy = paint.u.scale.center_y / 65536.f; + float sx = paint.u.scale.scale_x / 65536.f; + float sy = paint.u.scale.scale_y / 65536.f; + + bool p1 = c->funcs->push_translate (c->data, +dx, +dy); + bool p2 = c->funcs->push_scale (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -dx, -dy); + c->recurse (paint.u.scale.paint); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_ROTATE: + { + float dx = paint.u.rotate.center_x / 65536.f; + float dy = paint.u.rotate.center_y / 65536.f; + float a = paint.u.rotate.angle / 65536.f; + + bool p1 = c->funcs->push_translate (c->data, +dx, +dy); + bool p2 = c->funcs->push_rotate (c->data, a); + bool p3 = c->funcs->push_translate (c->data, -dx, -dy); + c->recurse (paint.u.rotate.paint); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_SKEW: + { + float dx = paint.u.skew.center_x / 65536.f; + float dy = paint.u.skew.center_y / 65536.f; + float sx = paint.u.skew.x_skew_angle / 65536.f; + float sy = paint.u.skew.y_skew_angle / 65536.f; + + bool p1 = c->funcs->push_translate (c->data, +dx, +dy); + bool p2 = c->funcs->push_skew (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -dx, -dy); + c->recurse (paint.u.skew.paint); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + break; + case FT_COLR_PAINTFORMAT_COMPOSITE: + { + c->recurse (paint.u.composite.backdrop_paint); + c->funcs->push_group (c->data); + c->recurse (paint.u.composite.source_paint); + c->funcs->pop_group (c->data, _hb_ft_paint_composite_mode (paint.u.composite.composite_mode)); + } + break; + + case FT_COLR_PAINT_FORMAT_MAX: break; + default: HB_FALLTHROUGH; + case FT_COLR_PAINTFORMAT_UNSUPPORTED: break; + } +} + + +static bool +hb_ft_paint_glyph_colr (hb_font_t *font, + void *font_data, + hb_codepoint_t gid, + hb_paint_funcs_t *paint_funcs, void *paint_data, + unsigned int palette_index, + hb_color_t foreground, + void *user_data) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + FT_Face ft_face = ft_font->ft_face; + + /* Face is locked. */ + + FT_Error error; + FT_Color* palette; + FT_LayerIterator iterator; + + FT_Bool have_layers; + FT_UInt layer_glyph_index; + FT_UInt layer_color_index; + + error = FT_Palette_Select(ft_face, palette_index, &palette); + if (error) + palette = NULL; + + /* COLRv1 */ + FT_OpaquePaint paint = {0}; + if (FT_Get_Color_Glyph_Paint (ft_face, gid, + FT_COLOR_NO_ROOT_TRANSFORM, + &paint)) + { + hb_ft_paint_context_t c (ft_font, font, + paint_funcs, paint_data, + palette, palette_index, foreground); + + bool is_bounded = true; + FT_ClipBox clip_box; + if (FT_Get_Color_Glyph_ClipBox (ft_face, gid, &clip_box)) + { + c.funcs->push_clip_rectangle (c.data, + clip_box.bottom_left.x + + roundf (hb_min (font->slant_xy * clip_box.bottom_left.y, + font->slant_xy * clip_box.top_left.y)), + clip_box.bottom_left.y, + clip_box.top_right.x + + roundf (hb_max (font->slant_xy * clip_box.bottom_right.y, + font->slant_xy * clip_box.top_right.y)), + clip_box.top_right.y); + } + else + { + + auto *extents_funcs = hb_paint_extents_get_funcs (); + hb_paint_extents_context_t extents_data; + hb_ft_paint_context_t ce (ft_font, font, + extents_funcs, &extents_data, + palette, palette_index, foreground); + ce.funcs->push_root_transform (ce.data, font); + ce.recurse (paint); + ce.funcs->pop_transform (ce.data); + hb_extents_t extents = extents_data.get_extents (); + is_bounded = extents_data.is_bounded (); + + c.funcs->push_clip_rectangle (c.data, + extents.xmin, + extents.ymin, + extents.xmax, + extents.ymax); + } + + c.funcs->push_root_transform (c.data, font); + + if (is_bounded) + c.recurse (paint); + + c.funcs->pop_transform (c.data); + c.funcs->pop_clip (c.data); + + return true; + } + + /* COLRv0 */ + iterator.p = NULL; + have_layers = FT_Get_Color_Glyph_Layer(ft_face, + gid, + &layer_glyph_index, + &layer_color_index, + &iterator); + + if (palette && have_layers) + { + do + { + hb_bool_t is_foreground = true; + hb_color_t color = foreground; + + if ( layer_color_index != 0xFFFF ) + { + FT_Color layer_color = palette[layer_color_index]; + color = HB_COLOR (layer_color.blue, + layer_color.green, + layer_color.red, + layer_color.alpha); + is_foreground = false; + } + + ft_font->lock.unlock (); + paint_funcs->push_clip_glyph (paint_data, layer_glyph_index, font); + ft_font->lock.lock (); + paint_funcs->color (paint_data, is_foreground, color); + paint_funcs->pop_clip (paint_data); + + } while (FT_Get_Color_Glyph_Layer(ft_face, + gid, + &layer_glyph_index, + &layer_color_index, + &iterator)); + return true; + } + + return false; +} + + +#endif /* HB_FT_COLR_HH */ diff --git a/gfx/harfbuzz/src/hb-ft.cc b/gfx/harfbuzz/src/hb-ft.cc new file mode 100644 index 0000000000..1105862fbc --- /dev/null +++ b/gfx/harfbuzz/src/hb-ft.cc @@ -0,0 +1,1500 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2009 Keith Stribley + * Copyright © 2015 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_FREETYPE + +#include "hb-ft.h" + +#include "hb-cache.hh" +#include "hb-draw.hh" +#include "hb-font.hh" +#include "hb-machinery.hh" +#include "hb-ot-os2-table.hh" +#include "hb-ot-shaper-arabic-pua.hh" +#include "hb-paint.hh" + +#include FT_ADVANCES_H +#include FT_MULTIPLE_MASTERS_H +#include FT_OUTLINE_H +#include FT_TRUETYPE_TABLES_H +#include FT_SYNTHESIS_H +#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 21300 +#include FT_COLOR_H +#endif + + +/** + * SECTION:hb-ft + * @title: hb-ft + * @short_description: FreeType integration + * @include: hb-ft.h + * + * Functions for using HarfBuzz with the FreeType library. + * + * HarfBuzz supports using FreeType to provide face and + * font data. + * + * Note that FreeType is not thread-safe, therefore these + * functions are not thread-safe either. + **/ + + +/* TODO: + * + * In general, this file does a fine job of what it's supposed to do. + * There are, however, things that need more work: + * + * - FreeType works in 26.6 mode. Clients can decide to use that mode, and everything + * would work fine. However, we also abuse this API for performing in font-space, + * but don't pass the correct flags to FreeType. We just abuse the no-hinting mode + * for that, such that no rounding etc happens. As such, we don't set ppem, and + * pass NO_HINTING as load_flags. Would be much better to use NO_SCALE, and scale + * ourselves. + * + * - We don't handle / allow for emboldening / obliqueing. + * + * - In the future, we should add constructors to create fonts in font space? + */ + + +using hb_ft_advance_cache_t = hb_cache_t<16, 24, 8, false>; + +struct hb_ft_font_t +{ + int load_flags; + bool symbol; /* Whether selected cmap is symbol cmap. */ + bool unref; /* Whether to destroy ft_face when done. */ + bool transform; /* Whether to apply FT_Face's transform. */ + + mutable hb_mutex_t lock; /* Protects members below. */ + FT_Face ft_face; + mutable unsigned cached_serial; + mutable hb_ft_advance_cache_t advance_cache; +}; + +static hb_ft_font_t * +_hb_ft_font_create (FT_Face ft_face, bool symbol, bool unref) +{ + hb_ft_font_t *ft_font = (hb_ft_font_t *) hb_calloc (1, sizeof (hb_ft_font_t)); + if (unlikely (!ft_font)) return nullptr; + + ft_font->lock.init (); + ft_font->ft_face = ft_face; + ft_font->symbol = symbol; + ft_font->unref = unref; + + ft_font->load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING; + + ft_font->cached_serial = (unsigned) -1; + ft_font->advance_cache.init (); + + return ft_font; +} + +static void +_hb_ft_face_destroy (void *data) +{ + FT_Done_Face ((FT_Face) data); +} + +static void +_hb_ft_font_destroy (void *data) +{ + hb_ft_font_t *ft_font = (hb_ft_font_t *) data; + + if (ft_font->unref) + _hb_ft_face_destroy (ft_font->ft_face); + + ft_font->lock.fini (); + + hb_free (ft_font); +} + + +/* hb_font changed, update FT_Face. */ +static void _hb_ft_hb_font_changed (hb_font_t *font, FT_Face ft_face) +{ + hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data; + + float x_mult = 1.f, y_mult = 1.f; + + if (font->x_scale < 0) x_mult = -x_mult; + if (font->y_scale < 0) y_mult = -y_mult; + + if (FT_Set_Char_Size (ft_face, + abs (font->x_scale), abs (font->y_scale), + 0, 0 +#if 0 + font->x_ppem * 72 * 64 / font->x_scale, + font->y_ppem * 72 * 64 / font->y_scale +#endif + ) && ft_face->num_fixed_sizes) + { +#ifdef HAVE_FT_GET_TRANSFORM + /* Bitmap font, eg. bitmap color emoji. */ + /* Pick largest size? */ + int x_scale = ft_face->available_sizes[ft_face->num_fixed_sizes - 1].x_ppem; + int y_scale = ft_face->available_sizes[ft_face->num_fixed_sizes - 1].y_ppem; + FT_Set_Char_Size (ft_face, + x_scale, y_scale, + 0, 0); + + /* This contains the sign that was previously in x_mult/y_mult. */ + x_mult = (float) font->x_scale / x_scale; + y_mult = (float) font->y_scale / y_scale; +#endif + } + else + { /* Shrug */ } + + + if (x_mult != 1.f || y_mult != 1.f) + { + FT_Matrix matrix = { (int) roundf (x_mult * (1<<16)), 0, + 0, (int) roundf (y_mult * (1<<16))}; + FT_Set_Transform (ft_face, &matrix, nullptr); + ft_font->transform = true; + } + +#if defined(HAVE_FT_GET_VAR_BLEND_COORDINATES) && !defined(HB_NO_VAR) + unsigned int num_coords; + const float *coords = hb_font_get_var_coords_design (font, &num_coords); + if (num_coords) + { + FT_Fixed *ft_coords = (FT_Fixed *) hb_calloc (num_coords, sizeof (FT_Fixed)); + if (ft_coords) + { + for (unsigned int i = 0; i < num_coords; i++) + ft_coords[i] = coords[i] * 65536.f; + FT_Set_Var_Design_Coordinates (ft_face, num_coords, ft_coords); + hb_free (ft_coords); + } + } +#endif +} + +/* Check if hb_font changed, update FT_Face. */ +static inline bool +_hb_ft_hb_font_check_changed (hb_font_t *font, + const hb_ft_font_t *ft_font) +{ + if (font->serial != ft_font->cached_serial) + { + _hb_ft_hb_font_changed (font, ft_font->ft_face); + ft_font->advance_cache.clear (); + ft_font->cached_serial = font->serial; + return true; + } + return false; +} + + +/** + * hb_ft_font_set_load_flags: + * @font: #hb_font_t to work upon + * @load_flags: The FreeType load flags to set + * + * Sets the FT_Load_Glyph load flags for the specified #hb_font_t. + * + * For more information, see + * https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#ft_load_xxx + * + * This function works with #hb_font_t objects created by + * hb_ft_font_create() or hb_ft_font_create_referenced(). + * + * Since: 1.0.5 + **/ +void +hb_ft_font_set_load_flags (hb_font_t *font, int load_flags) +{ + if (hb_object_is_immutable (font)) + return; + + if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)) + return; + + hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data; + + ft_font->load_flags = load_flags; +} + +/** + * hb_ft_font_get_load_flags: + * @font: #hb_font_t to work upon + * + * Fetches the FT_Load_Glyph load flags of the specified #hb_font_t. + * + * For more information, see + * https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#ft_load_xxx + * + * This function works with #hb_font_t objects created by + * hb_ft_font_create() or hb_ft_font_create_referenced(). + * + * Return value: FT_Load_Glyph flags found, or 0 + * + * Since: 1.0.5 + **/ +int +hb_ft_font_get_load_flags (hb_font_t *font) +{ + if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)) + return 0; + + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; + + return ft_font->load_flags; +} + +/** + * hb_ft_font_get_face: (skip) + * @font: #hb_font_t to work upon + * + * Fetches the FT_Face associated with the specified #hb_font_t + * font object. + * + * This function works with #hb_font_t objects created by + * hb_ft_font_create() or hb_ft_font_create_referenced(). + * + * Return value: (nullable): the FT_Face found or `NULL` + * + * Since: 0.9.2 + **/ +FT_Face +hb_ft_font_get_face (hb_font_t *font) +{ + if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)) + return nullptr; + + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; + + return ft_font->ft_face; +} + +/** + * hb_ft_font_lock_face: (skip) + * @font: #hb_font_t to work upon + * + * Gets the FT_Face associated with @font. + * + * This face will be kept around and access to the FT_Face object + * from other HarfBuzz API wil be blocked until you call hb_ft_font_unlock_face(). + * + * This function works with #hb_font_t objects created by + * hb_ft_font_create() or hb_ft_font_create_referenced(). + * + * Return value: (nullable) (transfer none): the FT_Face associated with @font or `NULL` + * Since: 2.6.5 + **/ +FT_Face +hb_ft_font_lock_face (hb_font_t *font) +{ + if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)) + return nullptr; + + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; + + ft_font->lock.lock (); + + return ft_font->ft_face; +} + +/** + * hb_ft_font_unlock_face: (skip) + * @font: #hb_font_t to work upon + * + * Releases an FT_Face previously obtained with hb_ft_font_lock_face(). + * + * Since: 2.6.5 + **/ +void +hb_ft_font_unlock_face (hb_font_t *font) +{ + if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)) + return; + + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; + + ft_font->lock.unlock (); +} + + +static hb_bool_t +hb_ft_get_nominal_glyph (hb_font_t *font, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + unsigned int g = FT_Get_Char_Index (ft_font->ft_face, unicode); + + if (unlikely (!g)) + { + if (unlikely (ft_font->symbol)) + { + switch ((unsigned) font->face->table.OS2->get_font_page ()) { + case OT::OS2::font_page_t::FONT_PAGE_NONE: + if (unicode <= 0x00FFu) + /* For symbol-encoded OpenType fonts, we duplicate the + * U+F000..F0FF range at U+0000..U+00FF. That's what + * Windows seems to do, and that's hinted about at: + * https://docs.microsoft.com/en-us/typography/opentype/spec/recom + * under "Non-Standard (Symbol) Fonts". */ + g = FT_Get_Char_Index (ft_font->ft_face, 0xF000u + unicode); + break; +#ifndef HB_NO_OT_SHAPER_ARABIC_FALLBACK + case OT::OS2::font_page_t::FONT_PAGE_SIMP_ARABIC: + g = FT_Get_Char_Index (ft_font->ft_face, _hb_arabic_pua_simp_map (unicode)); + break; + case OT::OS2::font_page_t::FONT_PAGE_TRAD_ARABIC: + g = FT_Get_Char_Index (ft_font->ft_face, _hb_arabic_pua_trad_map (unicode)); + break; +#endif + default: + break; + } + if (!g) + return false; + } + else + return false; + } + + *glyph = g; + return true; +} + +static unsigned int +hb_ft_get_nominal_glyphs (hb_font_t *font HB_UNUSED, + void *font_data, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + unsigned int done; + for (done = 0; + done < count && (*first_glyph = FT_Get_Char_Index (ft_font->ft_face, *first_unicode)); + done++) + { + first_unicode = &StructAtOffsetUnaligned (first_unicode, unicode_stride); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + } + /* We don't need to do ft_font->symbol dance here, since HB calls the singular + * nominal_glyph() for what we don't handle here. */ + return done; +} + + +static hb_bool_t +hb_ft_get_variation_glyph (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + unsigned int g = FT_Face_GetCharVariantIndex (ft_font->ft_face, unicode, variation_selector); + + if (unlikely (!g)) + return false; + + *glyph = g; + return true; +} + +static void +hb_ft_get_glyph_h_advances (hb_font_t* font, void* font_data, + unsigned count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_position_t *orig_first_advance = first_advance; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + int load_flags = ft_font->load_flags; + float x_mult; +#ifdef HAVE_FT_GET_TRANSFORM + if (ft_font->transform) + { + FT_Matrix matrix; + FT_Get_Transform (ft_face, &matrix, nullptr); + x_mult = sqrtf ((float)matrix.xx * matrix.xx + (float)matrix.xy * matrix.xy) / 65536.f; + x_mult *= font->x_scale < 0 ? -1 : +1; + } + else +#endif + { + x_mult = font->x_scale < 0 ? -1 : +1; + } + + for (unsigned int i = 0; i < count; i++) + { + FT_Fixed v = 0; + hb_codepoint_t glyph = *first_glyph; + + unsigned int cv; + if (ft_font->advance_cache.get (glyph, &cv)) + v = cv; + else + { + FT_Get_Advance (ft_face, glyph, load_flags, &v); + /* Work around bug that FreeType seems to return negative advance + * for variable-set fonts if x_scale is negative! */ + v = abs (v); + v = (int) (v * x_mult + (1<<9)) >> 10; + ft_font->advance_cache.set (glyph, v); + } + + *first_advance = v; + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + + if (font->x_strength && !font->embolden_in_place) + { + /* Emboldening. */ + hb_position_t x_strength = font->x_scale >= 0 ? font->x_strength : -font->x_strength; + first_advance = orig_first_advance; + for (unsigned int i = 0; i < count; i++) + { + *first_advance += *first_advance ? x_strength : 0; + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } +} + +#ifndef HB_NO_VERTICAL +static hb_position_t +hb_ft_get_glyph_v_advance (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Fixed v; + float y_mult; +#ifdef HAVE_FT_GET_TRANSFORM + if (ft_font->transform) + { + FT_Matrix matrix; + FT_Get_Transform (ft_font->ft_face, &matrix, nullptr); + y_mult = sqrtf ((float)matrix.yx * matrix.yx + (float)matrix.yy * matrix.yy) / 65536.f; + y_mult *= font->y_scale < 0 ? -1 : +1; + } + else +#endif + { + y_mult = font->y_scale < 0 ? -1 : +1; + } + + if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags | FT_LOAD_VERTICAL_LAYOUT, &v))) + return 0; + + v = (int) (y_mult * v); + + /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates + * have a Y growing upward. Hence the extra negation. */ + + hb_position_t y_strength = font->y_scale >= 0 ? font->y_strength : -font->y_strength; + return ((-v + (1<<9)) >> 10) + (font->embolden_in_place ? 0 : y_strength); +} +#endif + +#ifndef HB_NO_VERTICAL +static hb_bool_t +hb_ft_get_glyph_v_origin (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + float x_mult, y_mult; +#ifdef HAVE_FT_GET_TRANSFORM + if (ft_font->transform) + { + FT_Matrix matrix; + FT_Get_Transform (ft_face, &matrix, nullptr); + x_mult = sqrtf ((float)matrix.xx * matrix.xx + (float)matrix.xy * matrix.xy) / 65536.f; + x_mult *= font->x_scale < 0 ? -1 : +1; + y_mult = sqrtf ((float)matrix.yx * matrix.yx + (float)matrix.yy * matrix.yy) / 65536.f; + y_mult *= font->y_scale < 0 ? -1 : +1; + } + else +#endif + { + x_mult = font->x_scale < 0 ? -1 : +1; + y_mult = font->y_scale < 0 ? -1 : +1; + } + + if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) + return false; + + /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates + * have a Y growing upward. Hence the extra negation. */ + *x = ft_face->glyph->metrics.horiBearingX - ft_face->glyph->metrics.vertBearingX; + *y = ft_face->glyph->metrics.horiBearingY - (-ft_face->glyph->metrics.vertBearingY); + + *x = (hb_position_t) (x_mult * *x); + *y = (hb_position_t) (y_mult * *y); + + return true; +} +#endif + +#ifndef HB_NO_OT_SHAPE_FALLBACK +static hb_position_t +hb_ft_get_glyph_h_kerning (hb_font_t *font, + void *font_data, + hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Vector kerningv; + + FT_Kerning_Mode mode = font->x_ppem ? FT_KERNING_DEFAULT : FT_KERNING_UNFITTED; + if (FT_Get_Kerning (ft_font->ft_face, left_glyph, right_glyph, mode, &kerningv)) + return 0; + + return kerningv.x; +} +#endif + +static hb_bool_t +hb_ft_get_glyph_extents (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + float x_mult, y_mult; + float slant_xy = font->slant_xy; +#ifdef HAVE_FT_GET_TRANSFORM + if (ft_font->transform) + { + FT_Matrix matrix; + FT_Get_Transform (ft_face, &matrix, nullptr); + x_mult = sqrtf ((float)matrix.xx * matrix.xx + (float)matrix.xy * matrix.xy) / 65536.f; + x_mult *= font->x_scale < 0 ? -1 : +1; + y_mult = sqrtf ((float)matrix.yx * matrix.yx + (float)matrix.yy * matrix.yy) / 65536.f; + y_mult *= font->y_scale < 0 ? -1 : +1; + } + else +#endif + { + x_mult = font->x_scale < 0 ? -1 : +1; + y_mult = font->y_scale < 0 ? -1 : +1; + } + + if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) + return false; + + /* Copied from hb_font_t::scale_glyph_extents. */ + + float x1 = x_mult * ft_face->glyph->metrics.horiBearingX; + float y1 = y_mult * ft_face->glyph->metrics.horiBearingY; + float x2 = x1 + x_mult * ft_face->glyph->metrics.width; + float y2 = y1 + y_mult * -ft_face->glyph->metrics.height; + + /* Apply slant. */ + if (slant_xy) + { + x1 += hb_min (y1 * slant_xy, y2 * slant_xy); + x2 += hb_max (y1 * slant_xy, y2 * slant_xy); + } + + extents->x_bearing = floorf (x1); + extents->y_bearing = floorf (y1); + extents->width = ceilf (x2) - extents->x_bearing; + extents->height = ceilf (y2) - extents->y_bearing; + + if (font->x_strength || font->y_strength) + { + /* Y */ + int y_shift = font->y_strength; + if (font->y_scale < 0) y_shift = -y_shift; + extents->y_bearing += y_shift; + extents->height -= y_shift; + + /* X */ + int x_shift = font->x_strength; + if (font->x_scale < 0) x_shift = -x_shift; + if (font->embolden_in_place) + extents->x_bearing -= x_shift / 2; + extents->width += x_shift; + } + + return true; +} + +static hb_bool_t +hb_ft_get_glyph_contour_point (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t glyph, + unsigned int point_index, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + + if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) + return false; + + if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE)) + return false; + + if (unlikely (point_index >= (unsigned int) ft_face->glyph->outline.n_points)) + return false; + + *x = ft_face->glyph->outline.points[point_index].x; + *y = ft_face->glyph->outline.points[point_index].y; + + return true; +} + +static hb_bool_t +hb_ft_get_glyph_name (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + + hb_bool_t ret = !FT_Get_Glyph_Name (ft_face, glyph, name, size); + if (ret && (size && !*name)) + ret = false; + + return ret; +} + +static hb_bool_t +hb_ft_get_glyph_from_name (hb_font_t *font HB_UNUSED, + void *font_data, + const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + + if (len < 0) + *glyph = FT_Get_Name_Index (ft_face, (FT_String *) name); + else { + /* Make a nul-terminated version. */ + char buf[128]; + len = hb_min (len, (int) sizeof (buf) - 1); + strncpy (buf, name, len); + buf[len] = '\0'; + *glyph = FT_Get_Name_Index (ft_face, buf); + } + + if (*glyph == 0) + { + /* Check whether the given name was actually the name of glyph 0. */ + char buf[128]; + if (!FT_Get_Glyph_Name(ft_face, 0, buf, sizeof (buf)) && + len < 0 ? !strcmp (buf, name) : !strncmp (buf, name, len)) + return true; + } + + return *glyph != 0; +} + +static hb_bool_t +hb_ft_get_font_h_extents (hb_font_t *font HB_UNUSED, + void *font_data, + hb_font_extents_t *metrics, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + float y_mult; +#ifdef HAVE_FT_GET_TRANSFORM + if (ft_font->transform) + { + FT_Matrix matrix; + FT_Get_Transform (ft_face, &matrix, nullptr); + y_mult = sqrtf ((float)matrix.yx * matrix.yx + (float)matrix.yy * matrix.yy) / 65536.f; + y_mult *= font->y_scale < 0 ? -1 : +1; + } + else +#endif + { + y_mult = font->y_scale < 0 ? -1 : +1; + } + + if (ft_face->units_per_EM != 0) + { + metrics->ascender = FT_MulFix(ft_face->ascender, ft_face->size->metrics.y_scale); + metrics->descender = FT_MulFix(ft_face->descender, ft_face->size->metrics.y_scale); + metrics->line_gap = FT_MulFix( ft_face->height, ft_face->size->metrics.y_scale ) - (metrics->ascender - metrics->descender); + } + else + { + /* Bitmap-only font, eg. color bitmap font. */ + metrics->ascender = ft_face->size->metrics.ascender; + metrics->descender = ft_face->size->metrics.descender; + metrics->line_gap = ft_face->size->metrics.height - (metrics->ascender - metrics->descender); + } + + metrics->ascender = (hb_position_t) (y_mult * (metrics->ascender + font->y_strength)); + metrics->descender = (hb_position_t) (y_mult * metrics->descender); + metrics->line_gap = (hb_position_t) (y_mult * metrics->line_gap); + + return true; +} + +#ifndef HB_NO_DRAW + +static int +_hb_ft_move_to (const FT_Vector *to, + void *arg) +{ + hb_draw_session_t *drawing = (hb_draw_session_t *) arg; + drawing->move_to (to->x, to->y); + return FT_Err_Ok; +} + +static int +_hb_ft_line_to (const FT_Vector *to, + void *arg) +{ + hb_draw_session_t *drawing = (hb_draw_session_t *) arg; + drawing->line_to (to->x, to->y); + return FT_Err_Ok; +} + +static int +_hb_ft_conic_to (const FT_Vector *control, + const FT_Vector *to, + void *arg) +{ + hb_draw_session_t *drawing = (hb_draw_session_t *) arg; + drawing->quadratic_to (control->x, control->y, + to->x, to->y); + return FT_Err_Ok; +} + +static int +_hb_ft_cubic_to (const FT_Vector *control1, + const FT_Vector *control2, + const FT_Vector *to, + void *arg) +{ + hb_draw_session_t *drawing = (hb_draw_session_t *) arg; + drawing->cubic_to (control1->x, control1->y, + control2->x, control2->y, + to->x, to->y); + return FT_Err_Ok; +} + +static void +hb_ft_draw_glyph (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, void *draw_data, + void *user_data HB_UNUSED) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + + if (unlikely (FT_Load_Glyph (ft_face, glyph, + FT_LOAD_NO_BITMAP | ft_font->load_flags))) + return; + + if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) + return; + + const FT_Outline_Funcs outline_funcs = { + _hb_ft_move_to, + _hb_ft_line_to, + _hb_ft_conic_to, + _hb_ft_cubic_to, + 0, /* shift */ + 0, /* delta */ + }; + + hb_draw_session_t draw_session (draw_funcs, draw_data, font->slant_xy); + + /* Embolden */ + if (font->x_strength || font->y_strength) + { + FT_Outline_EmboldenXY (&ft_face->glyph->outline, font->x_strength, font->y_strength); + + int x_shift = 0; + int y_shift = 0; + if (font->embolden_in_place) + { + /* Undo the FreeType shift. */ + x_shift = -font->x_strength / 2; + y_shift = 0; + if (font->y_scale < 0) y_shift = -font->y_strength; + } + else + { + /* FreeType applied things in the wrong direction for negative scale; fix up. */ + if (font->x_scale < 0) x_shift = -font->x_strength; + if (font->y_scale < 0) y_shift = -font->y_strength; + } + if (x_shift || y_shift) + { + auto &outline = ft_face->glyph->outline; + for (auto &point : hb_iter (outline.points, outline.contours[outline.n_contours - 1] + 1)) + { + point.x += x_shift; + point.y += y_shift; + } + } + } + + + FT_Outline_Decompose (&ft_face->glyph->outline, + &outline_funcs, + &draw_session); +} +#endif + +#ifndef HB_NO_PAINT +#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 21300 + +#include "hb-ft-colr.hh" + +static void +hb_ft_paint_glyph (hb_font_t *font, + void *font_data, + hb_codepoint_t gid, + hb_paint_funcs_t *paint_funcs, void *paint_data, + unsigned int palette_index, + hb_color_t foreground, + void *user_data) +{ + const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; + hb_lock_t lock (ft_font->lock); + FT_Face ft_face = ft_font->ft_face; + + /* We release the lock before calling into glyph callbacks, such that + * eg. draw API can call back into the face.*/ + + if (unlikely (FT_Load_Glyph (ft_face, gid, + ft_font->load_flags | FT_LOAD_COLOR))) + return; + + if (ft_face->glyph->format == FT_GLYPH_FORMAT_OUTLINE) + { + if (hb_ft_paint_glyph_colr (font, font_data, gid, + paint_funcs, paint_data, + palette_index, foreground, + user_data)) + return; + + /* Simple outline. */ + ft_font->lock.unlock (); + paint_funcs->push_clip_glyph (paint_data, gid, font); + ft_font->lock.lock (); + paint_funcs->color (paint_data, true, foreground); + paint_funcs->pop_clip (paint_data); + + return; + } + + auto *glyph = ft_face->glyph; + if (glyph->format == FT_GLYPH_FORMAT_BITMAP) + { + auto &bitmap = glyph->bitmap; + if (bitmap.pixel_mode == FT_PIXEL_MODE_BGRA) + { + if (bitmap.pitch != (signed) bitmap.width * 4) + return; + + ft_font->lock.unlock (); + + hb_blob_t *blob = hb_blob_create ((const char *) bitmap.buffer, + bitmap.pitch * bitmap.rows, + HB_MEMORY_MODE_DUPLICATE, + nullptr, nullptr); + + hb_glyph_extents_t extents; + if (!hb_font_get_glyph_extents (font, gid, &extents)) + goto out; + + if (!paint_funcs->image (paint_data, + blob, + bitmap.width, + bitmap.rows, + HB_PAINT_IMAGE_FORMAT_BGRA, + font->slant_xy, + &extents)) + { + /* TODO Try a forced outline load and paint? */ + } + + out: + hb_blob_destroy (blob); + ft_font->lock.lock (); + } + + return; + } +} +#endif +#endif + + +static inline void free_static_ft_funcs (); + +static struct hb_ft_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t +{ + static hb_font_funcs_t *create () + { + hb_font_funcs_t *funcs = hb_font_funcs_create (); + + hb_font_funcs_set_nominal_glyph_func (funcs, hb_ft_get_nominal_glyph, nullptr, nullptr); + hb_font_funcs_set_nominal_glyphs_func (funcs, hb_ft_get_nominal_glyphs, nullptr, nullptr); + hb_font_funcs_set_variation_glyph_func (funcs, hb_ft_get_variation_glyph, nullptr, nullptr); + + hb_font_funcs_set_font_h_extents_func (funcs, hb_ft_get_font_h_extents, nullptr, nullptr); + hb_font_funcs_set_glyph_h_advances_func (funcs, hb_ft_get_glyph_h_advances, nullptr, nullptr); + //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ft_get_glyph_h_origin, nullptr, nullptr); + +#ifndef HB_NO_VERTICAL + //hb_font_funcs_set_font_v_extents_func (funcs, hb_ft_get_font_v_extents, nullptr, nullptr); + hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ft_get_glyph_v_advance, nullptr, nullptr); + hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ft_get_glyph_v_origin, nullptr, nullptr); +#endif + +#ifndef HB_NO_OT_SHAPE_FALLBACK + hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ft_get_glyph_h_kerning, nullptr, nullptr); +#endif + //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ft_get_glyph_v_kerning, nullptr, nullptr); + hb_font_funcs_set_glyph_extents_func (funcs, hb_ft_get_glyph_extents, nullptr, nullptr); + hb_font_funcs_set_glyph_contour_point_func (funcs, hb_ft_get_glyph_contour_point, nullptr, nullptr); + hb_font_funcs_set_glyph_name_func (funcs, hb_ft_get_glyph_name, nullptr, nullptr); + hb_font_funcs_set_glyph_from_name_func (funcs, hb_ft_get_glyph_from_name, nullptr, nullptr); + +#ifndef HB_NO_DRAW + hb_font_funcs_set_draw_glyph_func (funcs, hb_ft_draw_glyph, nullptr, nullptr); +#endif + +#ifndef HB_NO_PAINT +#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 21300 + hb_font_funcs_set_paint_glyph_func (funcs, hb_ft_paint_glyph, nullptr, nullptr); +#endif +#endif + + hb_font_funcs_make_immutable (funcs); + + hb_atexit (free_static_ft_funcs); + + return funcs; + } +} static_ft_funcs; + +static inline +void free_static_ft_funcs () +{ + static_ft_funcs.free_instance (); +} + +static hb_font_funcs_t * +_hb_ft_get_font_funcs () +{ + return static_ft_funcs.get_unconst (); +} + +static void +_hb_ft_font_set_funcs (hb_font_t *font, FT_Face ft_face, bool unref) +{ + bool symbol = ft_face->charmap && ft_face->charmap->encoding == FT_ENCODING_MS_SYMBOL; + + hb_ft_font_t *ft_font = _hb_ft_font_create (ft_face, symbol, unref); + if (unlikely (!ft_font)) return; + + hb_font_set_funcs (font, + _hb_ft_get_font_funcs (), + ft_font, + _hb_ft_font_destroy); +} + + +static hb_blob_t * +_hb_ft_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + FT_Face ft_face = (FT_Face) user_data; + FT_Byte *buffer; + FT_ULong length = 0; + FT_Error error; + + /* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */ + + error = FT_Load_Sfnt_Table (ft_face, tag, 0, nullptr, &length); + if (error) + return nullptr; + + buffer = (FT_Byte *) hb_malloc (length); + if (!buffer) + return nullptr; + + error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length); + if (error) + { + hb_free (buffer); + return nullptr; + } + + return hb_blob_create ((const char *) buffer, length, + HB_MEMORY_MODE_WRITABLE, + buffer, hb_free); +} + +/** + * hb_ft_face_create: + * @ft_face: (destroy destroy) (scope notified): FT_Face to work upon + * @destroy: (nullable): A callback to call when the face object is not needed anymore + * + * Creates an #hb_face_t face object from the specified FT_Face. + * + * Note that this is using the FT_Face object just to get at the underlying + * font data, and fonts created from the returned #hb_face_t will use the native + * HarfBuzz font implementation, unless you call hb_ft_font_set_funcs() on them. + * + * This variant of the function does not provide any life-cycle management. + * + * Most client programs should use hb_ft_face_create_referenced() + * (or, perhaps, hb_ft_face_create_cached()) instead. + * + * If you know you have valid reasons not to use hb_ft_face_create_referenced(), + * then it is the client program's responsibility to destroy @ft_face + * after the #hb_face_t face object has been destroyed. + * + * Return value: (transfer full): the new #hb_face_t face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_ft_face_create (FT_Face ft_face, + hb_destroy_func_t destroy) +{ + hb_face_t *face; + + if (!ft_face->stream->read) { + hb_blob_t *blob; + + blob = hb_blob_create ((const char *) ft_face->stream->base, + (unsigned int) ft_face->stream->size, + HB_MEMORY_MODE_READONLY, + ft_face, destroy); + face = hb_face_create (blob, ft_face->face_index); + hb_blob_destroy (blob); + } else { + face = hb_face_create_for_tables (_hb_ft_reference_table, ft_face, destroy); + } + + hb_face_set_index (face, ft_face->face_index); + hb_face_set_upem (face, ft_face->units_per_EM); + + return face; +} + +/** + * hb_ft_face_create_referenced: + * @ft_face: FT_Face to work upon + * + * Creates an #hb_face_t face object from the specified FT_Face. + * + * Note that this is using the FT_Face object just to get at the underlying + * font data, and fonts created from the returned #hb_face_t will use the native + * HarfBuzz font implementation, unless you call hb_ft_font_set_funcs() on them. + * + * This is the preferred variant of the hb_ft_face_create* + * function family, because it calls FT_Reference_Face() on @ft_face, + * ensuring that @ft_face remains alive as long as the resulting + * #hb_face_t face object remains alive. Also calls FT_Done_Face() + * when the #hb_face_t face object is destroyed. + * + * Use this version unless you know you have good reasons not to. + * + * Return value: (transfer full): the new #hb_face_t face object + * + * Since: 0.9.38 + **/ +hb_face_t * +hb_ft_face_create_referenced (FT_Face ft_face) +{ + FT_Reference_Face (ft_face); + return hb_ft_face_create (ft_face, _hb_ft_face_destroy); +} + +static void +hb_ft_face_finalize (void *arg) +{ + FT_Face ft_face = (FT_Face) arg; + hb_face_destroy ((hb_face_t *) ft_face->generic.data); +} + +/** + * hb_ft_face_create_cached: + * @ft_face: FT_Face to work upon + * + * Creates an #hb_face_t face object from the specified FT_Face. + * + * Note that this is using the FT_Face object just to get at the underlying + * font data, and fonts created from the returned #hb_face_t will use the native + * HarfBuzz font implementation, unless you call hb_ft_font_set_funcs() on them. + * + * This variant of the function caches the newly created #hb_face_t + * face object, using the @generic pointer of @ft_face. Subsequent function + * calls that are passed the same @ft_face parameter will have the same + * #hb_face_t returned to them, and that #hb_face_t will be correctly + * reference counted. + * + * However, client programs are still responsible for destroying + * @ft_face after the last #hb_face_t face object has been destroyed. + * + * Return value: (transfer full): the new #hb_face_t face object + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_ft_face_create_cached (FT_Face ft_face) +{ + if (unlikely (!ft_face->generic.data || ft_face->generic.finalizer != (FT_Generic_Finalizer) hb_ft_face_finalize)) + { + if (ft_face->generic.finalizer) + ft_face->generic.finalizer (ft_face); + + ft_face->generic.data = hb_ft_face_create (ft_face, nullptr); + ft_face->generic.finalizer = hb_ft_face_finalize; + } + + return hb_face_reference ((hb_face_t *) ft_face->generic.data); +} + +/** + * hb_ft_font_create: + * @ft_face: (destroy destroy) (scope notified): FT_Face to work upon + * @destroy: (nullable): A callback to call when the font object is not needed anymore + * + * Creates an #hb_font_t font object from the specified FT_Face. + * + * Note: You must set the face size on @ft_face before calling + * hb_ft_font_create() on it. HarfBuzz assumes size is always set and will + * access `size` member of FT_Face unconditionally. + * + * This variant of the function does not provide any life-cycle management. + * + * Most client programs should use hb_ft_font_create_referenced() + * instead. + * + * If you know you have valid reasons not to use hb_ft_font_create_referenced(), + * then it is the client program's responsibility to destroy @ft_face + * after the #hb_font_t font object has been destroyed. + * + * HarfBuzz will use the @destroy callback on the #hb_font_t font object + * if it is supplied when you use this function. However, even if @destroy + * is provided, it is the client program's responsibility to destroy @ft_face, + * and it is the client program's responsibility to ensure that @ft_face is + * destroyed only after the #hb_font_t font object has been destroyed. + * + * Return value: (transfer full): the new #hb_font_t font object + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_ft_font_create (FT_Face ft_face, + hb_destroy_func_t destroy) +{ + hb_font_t *font; + hb_face_t *face; + + face = hb_ft_face_create (ft_face, destroy); + font = hb_font_create (face); + hb_face_destroy (face); + _hb_ft_font_set_funcs (font, ft_face, false); + hb_ft_font_changed (font); + return font; +} + +/** + * hb_ft_font_changed: + * @font: #hb_font_t to work upon + * + * Refreshes the state of @font when the underlying FT_Face has changed. + * This function should be called after changing the size or + * variation-axis settings on the FT_Face. + * + * Since: 1.0.5 + **/ +void +hb_ft_font_changed (hb_font_t *font) +{ + if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy) + return; + + hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data; + + FT_Face ft_face = ft_font->ft_face; + + hb_font_set_scale (font, + (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16), + (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16)); +#if 0 /* hb-ft works in no-hinting model */ + hb_font_set_ppem (font, + ft_face->size->metrics.x_ppem, + ft_face->size->metrics.y_ppem); +#endif + +#if defined(HAVE_FT_GET_VAR_BLEND_COORDINATES) && !defined(HB_NO_VAR) + FT_MM_Var *mm_var = nullptr; + if (!FT_Get_MM_Var (ft_face, &mm_var)) + { + FT_Fixed *ft_coords = (FT_Fixed *) hb_calloc (mm_var->num_axis, sizeof (FT_Fixed)); + int *coords = (int *) hb_calloc (mm_var->num_axis, sizeof (int)); + if (coords && ft_coords) + { + if (!FT_Get_Var_Blend_Coordinates (ft_face, mm_var->num_axis, ft_coords)) + { + bool nonzero = false; + + for (unsigned int i = 0; i < mm_var->num_axis; ++i) + { + coords[i] = ft_coords[i] >>= 2; + nonzero = nonzero || coords[i]; + } + + if (nonzero) + hb_font_set_var_coords_normalized (font, coords, mm_var->num_axis); + else + hb_font_set_var_coords_normalized (font, nullptr, 0); + } + } + hb_free (coords); + hb_free (ft_coords); +#ifdef HAVE_FT_DONE_MM_VAR + FT_Done_MM_Var (ft_face->glyph->library, mm_var); +#else + hb_free (mm_var); +#endif + } +#endif + + ft_font->advance_cache.clear (); + ft_font->cached_serial = font->serial; +} + +/** + * hb_ft_hb_font_changed: + * @font: #hb_font_t to work upon + * + * Refreshes the state of the underlying FT_Face of @font when the hb_font_t + * @font has changed. + * This function should be called after changing the size or + * variation-axis settings on the @font. + * This call is fast if nothing has changed on @font. + * + * Return value: true if changed, false otherwise + * + * Since: 4.4.0 + **/ +hb_bool_t +hb_ft_hb_font_changed (hb_font_t *font) +{ + if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy) + return false; + + hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data; + + return _hb_ft_hb_font_check_changed (font, ft_font); +} + +/** + * hb_ft_font_create_referenced: + * @ft_face: FT_Face to work upon + * + * Creates an #hb_font_t font object from the specified FT_Face. + * + * Note: You must set the face size on @ft_face before calling + * hb_ft_font_create_referenced() on it. HarfBuzz assumes size is always set + * and will access `size` member of FT_Face unconditionally. + * + * This is the preferred variant of the hb_ft_font_create* + * function family, because it calls FT_Reference_Face() on @ft_face, + * ensuring that @ft_face remains alive as long as the resulting + * #hb_font_t font object remains alive. + * + * Use this version unless you know you have good reasons not to. + * + * Return value: (transfer full): the new #hb_font_t font object + * + * Since: 0.9.38 + **/ +hb_font_t * +hb_ft_font_create_referenced (FT_Face ft_face) +{ + FT_Reference_Face (ft_face); + return hb_ft_font_create (ft_face, _hb_ft_face_destroy); +} + +static inline void free_static_ft_library (); + +static struct hb_ft_library_lazy_loader_t : hb_lazy_loader_t, + hb_ft_library_lazy_loader_t> +{ + static FT_Library create () + { + FT_Library l; + if (FT_Init_FreeType (&l)) + return nullptr; + + hb_atexit (free_static_ft_library); + + return l; + } + static void destroy (FT_Library l) + { + FT_Done_FreeType (l); + } + static FT_Library get_null () + { + return nullptr; + } +} static_ft_library; + +static inline +void free_static_ft_library () +{ + static_ft_library.free_instance (); +} + +static FT_Library +get_ft_library () +{ + return static_ft_library.get_unconst (); +} + +static void +_release_blob (void *arg) +{ + FT_Face ft_face = (FT_Face) arg; + hb_blob_destroy ((hb_blob_t *) ft_face->generic.data); +} + +/** + * hb_ft_font_set_funcs: + * @font: #hb_font_t to work upon + * + * Configures the font-functions structure of the specified + * #hb_font_t font object to use FreeType font functions. + * + * In particular, you can use this function to configure an + * existing #hb_face_t face object for use with FreeType font + * functions even if that #hb_face_t face object was initially + * created with hb_face_create(), and therefore was not + * initially configured to use FreeType font functions. + * + * An #hb_font_t object created with hb_ft_font_create() + * is preconfigured for FreeType font functions and does not + * require this function to be used. + * + * Note that if you modify the underlying #hb_font_t after + * calling this function, you need to call hb_ft_hb_font_changed() + * to update the underlying FT_Face. + * + * Note: Internally, this function creates an FT_Face. +* + * + * Since: 1.0.5 + **/ +void +hb_ft_font_set_funcs (hb_font_t *font) +{ + hb_blob_t *blob = hb_face_reference_blob (font->face); + unsigned int blob_length; + const char *blob_data = hb_blob_get_data (blob, &blob_length); + if (unlikely (!blob_length)) + DEBUG_MSG (FT, font, "Font face has empty blob"); + + FT_Face ft_face = nullptr; + FT_Error err = FT_New_Memory_Face (get_ft_library (), + (const FT_Byte *) blob_data, + blob_length, + hb_face_get_index (font->face), + &ft_face); + + if (unlikely (err)) { + hb_blob_destroy (blob); + DEBUG_MSG (FT, font, "Font face FT_New_Memory_Face() failed"); + return; + } + + if (FT_Select_Charmap (ft_face, FT_ENCODING_MS_SYMBOL)) + FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE); + + + ft_face->generic.data = blob; + ft_face->generic.finalizer = _release_blob; + + _hb_ft_font_set_funcs (font, ft_face, true); + hb_ft_font_set_load_flags (font, FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING); + + _hb_ft_hb_font_changed (font, ft_face); +} + +#endif diff --git a/gfx/harfbuzz/src/hb-ft.h b/gfx/harfbuzz/src/hb-ft.h new file mode 100644 index 0000000000..6a8a7abe8c --- /dev/null +++ b/gfx/harfbuzz/src/hb-ft.h @@ -0,0 +1,145 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2015 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_FT_H +#define HB_FT_H + +#include "hb.h" + +#include +#include FT_FREETYPE_H + +HB_BEGIN_DECLS + +/* + * Note: FreeType is not thread-safe. + * Hence, these functions are not either. + */ + +/* + * hb-face from ft-face. + */ + +/* This one creates a new hb-face for given ft-face. + * When the returned hb-face is destroyed, the destroy + * callback is called (if not NULL), with the ft-face passed + * to it. + * + * The client is responsible to make sure that ft-face is + * destroyed after hb-face is destroyed. + * + * Most often you don't want this function. You should use either + * hb_ft_face_create_cached(), or hb_ft_face_create_referenced(). + * In particular, if you are going to pass NULL as destroy, you + * probably should use (the more recent) hb_ft_face_create_referenced() + * instead. + */ +HB_EXTERN hb_face_t * +hb_ft_face_create (FT_Face ft_face, + hb_destroy_func_t destroy); + +/* This version is like hb_ft_face_create(), except that it caches + * the hb-face using the generic pointer of the ft-face. This means + * that subsequent calls to this function with the same ft-face will + * return the same hb-face (correctly referenced). + * + * Client is still responsible for making sure that ft-face is destroyed + * after hb-face is. + */ +HB_EXTERN hb_face_t * +hb_ft_face_create_cached (FT_Face ft_face); + +/* This version is like hb_ft_face_create(), except that it calls + * FT_Reference_Face() on ft-face, as such keeping ft-face alive + * as long as the hb-face is. + * + * This is the most convenient version to use. Use it unless you have + * very good reasons not to. + */ +HB_EXTERN hb_face_t * +hb_ft_face_create_referenced (FT_Face ft_face); + + +/* + * hb-font from ft-face. + */ + +/* + * Note: + * + * Set face size on ft-face before creating hb-font from it. + * Otherwise hb-ft would NOT pick up the font size correctly. + */ + +/* See notes on hb_ft_face_create(). Same issues re lifecycle-management + * apply here. Use hb_ft_font_create_referenced() if you can. */ +HB_EXTERN hb_font_t * +hb_ft_font_create (FT_Face ft_face, + hb_destroy_func_t destroy); + +/* See notes on hb_ft_face_create_referenced() re lifecycle-management + * issues. */ +HB_EXTERN hb_font_t * +hb_ft_font_create_referenced (FT_Face ft_face); + +HB_EXTERN FT_Face +hb_ft_font_get_face (hb_font_t *font); + +HB_EXTERN FT_Face +hb_ft_font_lock_face (hb_font_t *font); + +HB_EXTERN void +hb_ft_font_unlock_face (hb_font_t *font); + +HB_EXTERN void +hb_ft_font_set_load_flags (hb_font_t *font, int load_flags); + +HB_EXTERN int +hb_ft_font_get_load_flags (hb_font_t *font); + +/* Call when size or variations settings on underlying FT_Face changed, + * and you want to update the hb_font_t from it. */ +HB_EXTERN void +hb_ft_font_changed (hb_font_t *font); + +/* Call when size or variations settings on underlying hb_font_t may have + * changed, and you want to update the FT_Face from it. This call is fast + * if nothing changed on hb_font_t. Returns true if changed. */ +HB_EXTERN hb_bool_t +hb_ft_hb_font_changed (hb_font_t *font); + +/* Makes an hb_font_t use FreeType internally to implement font functions. + * Note: this internally creates an FT_Face. Use it when you create your + * hb_face_t using hb_face_create(). */ +HB_EXTERN void +hb_ft_font_set_funcs (hb_font_t *font); + + +HB_END_DECLS + +#endif /* HB_FT_H */ diff --git a/gfx/harfbuzz/src/hb-gdi.cc b/gfx/harfbuzz/src/hb-gdi.cc new file mode 100644 index 0000000000..8e7589beac --- /dev/null +++ b/gfx/harfbuzz/src/hb-gdi.cc @@ -0,0 +1,85 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include "hb.hh" + +#ifdef HAVE_GDI + +#include "hb-gdi.h" + + +/** + * SECTION:hb-gdi + * @title: hb-gdi + * @short_description: GDI integration + * @include: hb-gdi.h + * + * Functions for using HarfBuzz with GDI fonts. + **/ + +static hb_blob_t * +_hb_gdi_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) +{ + char *buffer = nullptr; + DWORD length = 0; + + HDC hdc = GetDC (nullptr); + if (unlikely (!SelectObject (hdc, (HFONT) user_data))) goto fail; + + length = GetFontData (hdc, hb_uint32_swap (tag), 0, buffer, length); + if (unlikely (length == GDI_ERROR)) goto fail_with_releasedc; + + buffer = (char *) hb_malloc (length); + if (unlikely (!buffer)) goto fail_with_releasedc; + length = GetFontData (hdc, hb_uint32_swap (tag), 0, buffer, length); + if (unlikely (length == GDI_ERROR)) goto fail_with_releasedc_and_free; + ReleaseDC (nullptr, hdc); + + return hb_blob_create ((const char *) buffer, length, HB_MEMORY_MODE_WRITABLE, buffer, hb_free); + +fail_with_releasedc_and_free: + hb_free (buffer); +fail_with_releasedc: + ReleaseDC (nullptr, hdc); +fail: + return hb_blob_get_empty (); +} + +/** + * hb_gdi_face_create: + * @hfont: a HFONT object. + * + * Constructs a new face object from the specified GDI HFONT. + * + * Return value: #hb_face_t object corresponding to the given input + * + * Since: 2.6.0 + **/ +hb_face_t * +hb_gdi_face_create (HFONT hfont) +{ + return hb_face_create_for_tables (_hb_gdi_reference_table, (void *) hfont, nullptr); +} + +#endif diff --git a/gfx/harfbuzz/src/hb-gdi.h b/gfx/harfbuzz/src/hb-gdi.h new file mode 100644 index 0000000000..68cc43917e --- /dev/null +++ b/gfx/harfbuzz/src/hb-gdi.h @@ -0,0 +1,39 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_GDI_H +#define HB_GDI_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + +HB_EXTERN hb_face_t * +hb_gdi_face_create (HFONT hfont); + +HB_END_DECLS + +#endif /* HB_GDI_H */ diff --git a/gfx/harfbuzz/src/hb-glib.cc b/gfx/harfbuzz/src/hb-glib.cc new file mode 100644 index 0000000000..1da81696e7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-glib.cc @@ -0,0 +1,232 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_GLIB + +#include "hb-glib.h" + +#include "hb-machinery.hh" + + +/** + * SECTION:hb-glib + * @title: hb-glib + * @short_description: GLib integration + * @include: hb-glib.h + * + * Functions for using HarfBuzz with the GLib library. + * + * HarfBuzz supports using GLib to provide Unicode data, by attaching + * GLib functions to the virtual methods in a #hb_unicode_funcs_t function + * structure. + **/ + + +/** + * hb_glib_script_to_script: + * @script: The GUnicodeScript identifier to query + * + * Fetches the #hb_script_t script that corresponds to the + * specified GUnicodeScript identifier. + * + * Return value: the #hb_script_t script found + * + * Since: 0.9.38 + **/ +hb_script_t +hb_glib_script_to_script (GUnicodeScript script) +{ + return (hb_script_t) g_unicode_script_to_iso15924 (script); +} + +/** + * hb_glib_script_from_script: + * @script: The #hb_script_t to query + * + * Fetches the GUnicodeScript identifier that corresponds to the + * specified #hb_script_t script. + * + * Return value: the GUnicodeScript identifier found + * + * Since: 0.9.38 + **/ +GUnicodeScript +hb_glib_script_from_script (hb_script_t script) +{ + return g_unicode_script_from_iso15924 (script); +} + + +static hb_unicode_combining_class_t +hb_glib_unicode_combining_class (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) + +{ + return (hb_unicode_combining_class_t) g_unichar_combining_class (unicode); +} + +static hb_unicode_general_category_t +hb_glib_unicode_general_category (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) + +{ + /* hb_unicode_general_category_t and GUnicodeType are identical */ + return (hb_unicode_general_category_t) g_unichar_type (unicode); +} + +static hb_codepoint_t +hb_glib_unicode_mirroring (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) +{ + g_unichar_get_mirror_char (unicode, &unicode); + return unicode; +} + +static hb_script_t +hb_glib_unicode_script (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) +{ + return hb_glib_script_to_script (g_unichar_get_script (unicode)); +} + +static hb_bool_t +hb_glib_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t a, + hb_codepoint_t b, + hb_codepoint_t *ab, + void *user_data HB_UNUSED) +{ +#if GLIB_CHECK_VERSION(2,29,12) + return g_unichar_compose (a, b, ab); +#else + return false; +#endif +} + +static hb_bool_t +hb_glib_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t ab, + hb_codepoint_t *a, + hb_codepoint_t *b, + void *user_data HB_UNUSED) +{ +#if GLIB_CHECK_VERSION(2,29,12) + return g_unichar_decompose (ab, a, b); +#else + return false; +#endif +} + + +static inline void free_static_glib_funcs (); + +static struct hb_glib_unicode_funcs_lazy_loader_t : hb_unicode_funcs_lazy_loader_t +{ + static hb_unicode_funcs_t *create () + { + hb_unicode_funcs_t *funcs = hb_unicode_funcs_create (nullptr); + + hb_unicode_funcs_set_combining_class_func (funcs, hb_glib_unicode_combining_class, nullptr, nullptr); + hb_unicode_funcs_set_general_category_func (funcs, hb_glib_unicode_general_category, nullptr, nullptr); + hb_unicode_funcs_set_mirroring_func (funcs, hb_glib_unicode_mirroring, nullptr, nullptr); + hb_unicode_funcs_set_script_func (funcs, hb_glib_unicode_script, nullptr, nullptr); + hb_unicode_funcs_set_compose_func (funcs, hb_glib_unicode_compose, nullptr, nullptr); + hb_unicode_funcs_set_decompose_func (funcs, hb_glib_unicode_decompose, nullptr, nullptr); + + hb_unicode_funcs_make_immutable (funcs); + + hb_atexit (free_static_glib_funcs); + + return funcs; + } +} static_glib_funcs; + +static inline +void free_static_glib_funcs () +{ + static_glib_funcs.free_instance (); +} + +/** + * hb_glib_get_unicode_funcs: + * + * Fetches a Unicode-functions structure that is populated + * with the appropriate GLib function for each method. + * + * Return value: (transfer none): a pointer to the #hb_unicode_funcs_t Unicode-functions structure + * + * Since: 0.9.38 + **/ +hb_unicode_funcs_t * +hb_glib_get_unicode_funcs () +{ + return static_glib_funcs.get_unconst (); +} + + + +#if GLIB_CHECK_VERSION(2,31,10) + +static void +_hb_g_bytes_unref (void *data) +{ + g_bytes_unref ((GBytes *) data); +} + +/** + * hb_glib_blob_create: + * @gbytes: the GBytes structure to work upon + * + * Creates an #hb_blob_t blob from the specified + * GBytes data structure. + * + * Return value: (transfer full): the new #hb_blob_t blob object + * + * Since: 0.9.38 + **/ +hb_blob_t * +hb_glib_blob_create (GBytes *gbytes) +{ + gsize size = 0; + gconstpointer data = g_bytes_get_data (gbytes, &size); + return hb_blob_create ((const char *) data, + size, + HB_MEMORY_MODE_READONLY, + g_bytes_ref (gbytes), + _hb_g_bytes_unref); +} +#endif + + +#endif diff --git a/gfx/harfbuzz/src/hb-glib.h b/gfx/harfbuzz/src/hb-glib.h new file mode 100644 index 0000000000..5f04183ba1 --- /dev/null +++ b/gfx/harfbuzz/src/hb-glib.h @@ -0,0 +1,56 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_GLIB_H +#define HB_GLIB_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + + +HB_EXTERN hb_script_t +hb_glib_script_to_script (GUnicodeScript script); + +HB_EXTERN GUnicodeScript +hb_glib_script_from_script (hb_script_t script); + + +HB_EXTERN hb_unicode_funcs_t * +hb_glib_get_unicode_funcs (void); + +#if GLIB_CHECK_VERSION(2,31,10) +HB_EXTERN hb_blob_t * +hb_glib_blob_create (GBytes *gbytes); +#endif + +HB_END_DECLS + +#endif /* HB_GLIB_H */ diff --git a/gfx/harfbuzz/src/hb-gobject-enums.cc.tmpl b/gfx/harfbuzz/src/hb-gobject-enums.cc.tmpl new file mode 100644 index 0000000000..87a11dd407 --- /dev/null +++ b/gfx/harfbuzz/src/hb-gobject-enums.cc.tmpl @@ -0,0 +1,80 @@ +/*** BEGIN file-header ***/ +/* + * Copyright (C) 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_GOBJECT + +/* g++ didn't like older gtype.h gcc-only code path. */ +#include +#if !GLIB_CHECK_VERSION(2,29,16) +#undef __GNUC__ +#undef __GNUC_MINOR__ +#define __GNUC__ 2 +#define __GNUC_MINOR__ 6 +#endif + +#include "hb-gobject.h" + +/*** END file-header ***/ + +/*** BEGIN file-production ***/ +/* enumerations from "@basename@" */ +/*** END file-production ***/ + +/*** BEGIN file-tail ***/ + +#endif +/*** END file-tail ***/ + +/*** BEGIN value-header ***/ +GType +@enum_name@_get_type () +{ + static gsize type_id = 0; + + if (g_once_init_enter (&type_id)) + { + static const G@Type@Value values[] = { +/*** END value-header ***/ + +/*** BEGIN value-production ***/ + { @VALUENAME@, "@VALUENAME@", "@valuenick@" }, +/*** END value-production ***/ + +/*** BEGIN value-tail ***/ + { 0, NULL, NULL } + }; + GType id = + g_@type@_register_static (g_intern_static_string ("@EnumName@"), values); + g_once_init_leave (&type_id, id); + } + + return type_id; +} + +/*** END value-tail ***/ diff --git a/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl b/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl new file mode 100644 index 0000000000..6dd98f7fed --- /dev/null +++ b/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl @@ -0,0 +1,56 @@ +/*** BEGIN file-header ***/ +/* + * Copyright (C) 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_GOBJECT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_GOBJECT_ENUMS_H +#define HB_GOBJECT_ENUMS_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + + +/*** END file-header ***/ + +/*** BEGIN value-header ***/ +HB_EXTERN GType +@enum_name@_get_type (void) G_GNUC_CONST; +#define @ENUMPREFIX@_TYPE_@ENUMSHORT@ (@enum_name@_get_type ()) + +/*** END value-header ***/ + +/*** BEGIN file-tail ***/ + +HB_END_DECLS + +#endif /* HB_GOBJECT_ENUMS_H */ +/*** END file-tail ***/ diff --git a/gfx/harfbuzz/src/hb-gobject-structs.cc b/gfx/harfbuzz/src/hb-gobject-structs.cc new file mode 100644 index 0000000000..332cc84888 --- /dev/null +++ b/gfx/harfbuzz/src/hb-gobject-structs.cc @@ -0,0 +1,116 @@ +/* + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_GOBJECT + + +/** + * SECTION:hb-gobject + * @title: hb-gobject + * @short_description: GObject integration support + * @include: hb-gobject.h + * + * Support for using HarfBuzz with the GObject library to provide + * type data. + * + * The types and functions listed here are solely a linkage between + * HarfBuzz's public data types and the GTypes used by the GObject framework. + * HarfBuzz uses GObject introspection to generate its Python bindings + * (and potentially other language bindings); client programs should never need + * to access the GObject-integration mechanics. + * + * For client programs using the GNOME and GTK software stack, please see the + * GLib and FreeType integration pages. + **/ + + +/* g++ didn't like older gtype.h gcc-only code path. */ +#include +#if !GLIB_CHECK_VERSION(2,29,16) +#undef __GNUC__ +#undef __GNUC_MINOR__ +#define __GNUC__ 2 +#define __GNUC_MINOR__ 6 +#endif + +#include "hb-gobject.h" + +#define HB_DEFINE_BOXED_TYPE(name,copy_func,free_func) \ +GType \ +hb_gobject_##name##_get_type () \ +{ \ + static gsize type_id = 0; \ + if (g_once_init_enter (&type_id)) { \ + GType id = g_boxed_type_register_static (g_intern_static_string ("hb_" #name "_t"), \ + (GBoxedCopyFunc) copy_func, \ + (GBoxedFreeFunc) free_func); \ + g_once_init_leave (&type_id, id); \ + } \ + return type_id; \ +} + +#define HB_DEFINE_OBJECT_TYPE(name) \ + HB_DEFINE_BOXED_TYPE (name, hb_##name##_reference, hb_##name##_destroy) + +#define HB_DEFINE_VALUE_TYPE(name) \ + static hb_##name##_t *_hb_##name##_reference (const hb_##name##_t *l) \ + { \ + hb_##name##_t *c = (hb_##name##_t *) hb_calloc (1, sizeof (hb_##name##_t)); \ + if (unlikely (!c)) return nullptr; \ + *c = *l; \ + return c; \ + } \ + static void _hb_##name##_destroy (hb_##name##_t *l) { hb_free (l); } \ + HB_DEFINE_BOXED_TYPE (name, _hb_##name##_reference, _hb_##name##_destroy) + +HB_DEFINE_OBJECT_TYPE (buffer) +HB_DEFINE_OBJECT_TYPE (blob) +HB_DEFINE_OBJECT_TYPE (draw_funcs) +HB_DEFINE_OBJECT_TYPE (paint_funcs) +HB_DEFINE_OBJECT_TYPE (face) +HB_DEFINE_OBJECT_TYPE (font) +HB_DEFINE_OBJECT_TYPE (font_funcs) +HB_DEFINE_OBJECT_TYPE (set) +HB_DEFINE_OBJECT_TYPE (map) +HB_DEFINE_OBJECT_TYPE (shape_plan) +HB_DEFINE_OBJECT_TYPE (unicode_funcs) +HB_DEFINE_VALUE_TYPE (feature) +HB_DEFINE_VALUE_TYPE (glyph_info) +HB_DEFINE_VALUE_TYPE (glyph_position) +HB_DEFINE_VALUE_TYPE (segment_properties) +HB_DEFINE_VALUE_TYPE (draw_state) +HB_DEFINE_VALUE_TYPE (color_stop) +HB_DEFINE_VALUE_TYPE (color_line) +HB_DEFINE_VALUE_TYPE (user_data_key) + +HB_DEFINE_VALUE_TYPE (ot_var_axis_info) +HB_DEFINE_VALUE_TYPE (ot_math_glyph_variant) +HB_DEFINE_VALUE_TYPE (ot_math_glyph_part) + + +#endif diff --git a/gfx/harfbuzz/src/hb-gobject-structs.h b/gfx/harfbuzz/src/hb-gobject-structs.h new file mode 100644 index 0000000000..b7b5f55ce6 --- /dev/null +++ b/gfx/harfbuzz/src/hb-gobject-structs.h @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_GOBJECT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_GOBJECT_STRUCTS_H +#define HB_GOBJECT_STRUCTS_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + + +/* Object types */ + +HB_EXTERN GType +hb_gobject_blob_get_type (void); +#define HB_GOBJECT_TYPE_BLOB (hb_gobject_blob_get_type ()) + +HB_EXTERN GType +hb_gobject_buffer_get_type (void); +#define HB_GOBJECT_TYPE_BUFFER (hb_gobject_buffer_get_type ()) + +HB_EXTERN GType +hb_gobject_draw_funcs_get_type (void); +#define HB_GOBJECT_TYPE_DRAW_FUNCS (hb_gobject_draw_funcs_get_type ()) + +HB_EXTERN GType +hb_gobject_paint_funcs_get_type (void); +#define HB_GOBJECT_TYPE_PAINT_FUNCS (hb_gobject_paint_funcs_get_type ()) + +HB_EXTERN GType +hb_gobject_face_get_type (void); +#define HB_GOBJECT_TYPE_FACE (hb_gobject_face_get_type ()) + +HB_EXTERN GType +hb_gobject_font_get_type (void); +#define HB_GOBJECT_TYPE_FONT (hb_gobject_font_get_type ()) + +HB_EXTERN GType +hb_gobject_font_funcs_get_type (void); +#define HB_GOBJECT_TYPE_FONT_FUNCS (hb_gobject_font_funcs_get_type ()) + +HB_EXTERN GType +hb_gobject_set_get_type (void); +#define HB_GOBJECT_TYPE_SET (hb_gobject_set_get_type ()) + +HB_EXTERN GType +hb_gobject_map_get_type (void); +#define HB_GOBJECT_TYPE_MAP (hb_gobject_map_get_type ()) + +HB_EXTERN GType +hb_gobject_shape_plan_get_type (void); +#define HB_GOBJECT_TYPE_SHAPE_PLAN (hb_gobject_shape_plan_get_type ()) + +HB_EXTERN GType +hb_gobject_unicode_funcs_get_type (void); +#define HB_GOBJECT_TYPE_UNICODE_FUNCS (hb_gobject_unicode_funcs_get_type ()) + +/* Value types */ + +HB_EXTERN GType +hb_gobject_feature_get_type (void); +#define HB_GOBJECT_TYPE_FEATURE (hb_gobject_feature_get_type ()) + +HB_EXTERN GType +hb_gobject_glyph_info_get_type (void); +#define HB_GOBJECT_TYPE_GLYPH_INFO (hb_gobject_glyph_info_get_type ()) + +HB_EXTERN GType +hb_gobject_glyph_position_get_type (void); +#define HB_GOBJECT_TYPE_GLYPH_POSITION (hb_gobject_glyph_position_get_type ()) + +HB_EXTERN GType +hb_gobject_segment_properties_get_type (void); +#define HB_GOBJECT_TYPE_SEGMENT_PROPERTIES (hb_gobject_segment_properties_get_type ()) + +HB_EXTERN GType +hb_gobject_draw_state_get_type (void); +#define HB_GOBJECT_TYPE_DRAW_STATE (hb_gobject_draw_state_get_type ()) + +HB_EXTERN GType +hb_gobject_color_stop_get_type (void); +#define HB_GOBJECT_TYPE_COLOR_STOP (hb_gobject_color_stop_get_type ()) + +HB_EXTERN GType +hb_gobject_color_line_get_type (void); +#define HB_GOBJECT_TYPE_COLOR_LINE (hb_gobject_color_line_get_type ()) + +HB_EXTERN GType +hb_gobject_user_data_key_get_type (void); +#define HB_GOBJECT_TYPE_USER_DATA_KEY (hb_gobject_user_data_key_get_type ()) + +HB_EXTERN GType +hb_gobject_ot_var_axis_info_get_type (void); +#define HB_GOBJECT_TYPE_OT_VAR_AXIS_INFO (hb_gobject_ot_var_axis_info_get_type ()) + +HB_EXTERN GType +hb_gobject_ot_math_glyph_variant_get_type (void); +#define HB_GOBJECT_TYPE_OT_MATH_GLYPH_VARIANT (hb_gobject_ot_math_glyph_variant_get_type ()) + +HB_EXTERN GType +hb_gobject_ot_math_glyph_part_get_type (void); +#define HB_GOBJECT_TYPE_OT_MATH_GLYPH_PART (hb_gobject_ot_math_glyph_part_get_type ()) + + +HB_END_DECLS + +#endif /* HB_GOBJECT_H */ diff --git a/gfx/harfbuzz/src/hb-gobject.h b/gfx/harfbuzz/src/hb-gobject.h new file mode 100644 index 0000000000..8891aa0ee7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-gobject.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_GOBJECT_H +#define HB_GOBJECT_H +#define HB_GOBJECT_H_IN + +#include "hb.h" + +#include "hb-gobject-enums.h" +#include "hb-gobject-structs.h" + +HB_BEGIN_DECLS +HB_END_DECLS + +#undef HB_GOBJECT_H_IN +#endif /* HB_GOBJECT_H */ diff --git a/gfx/harfbuzz/src/hb-graphite2.cc b/gfx/harfbuzz/src/hb-graphite2.cc new file mode 100644 index 0000000000..9e068f8d84 --- /dev/null +++ b/gfx/harfbuzz/src/hb-graphite2.cc @@ -0,0 +1,449 @@ +/* + * Copyright © 2011 Martin Hosken + * Copyright © 2011 SIL International + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_GRAPHITE2 + +#include "hb-shaper-impl.hh" + +#include "hb-graphite2.h" + +#include + +#include "hb-ot-layout.h" + + +/** + * SECTION:hb-graphite2 + * @title: hb-graphite2 + * @short_description: Graphite2 integration + * @include: hb-graphite2.h + * + * Functions for using HarfBuzz with fonts that include Graphite features. + * + * For Graphite features to work, you must be sure that HarfBuzz was compiled + * with the `graphite2` shaping engine enabled. Currently, the default is to + * not enable `graphite2` shaping. + **/ + + +/* + * shaper face data + */ + +typedef struct hb_graphite2_tablelist_t +{ + struct hb_graphite2_tablelist_t *next; + hb_blob_t *blob; + unsigned int tag; +} hb_graphite2_tablelist_t; + +struct hb_graphite2_face_data_t +{ + hb_face_t *face; + gr_face *grface; + hb_atomic_ptr_t tlist; +}; + +static const void *hb_graphite2_get_table (const void *data, unsigned int tag, size_t *len) +{ + hb_graphite2_face_data_t *face_data = (hb_graphite2_face_data_t *) data; + hb_graphite2_tablelist_t *tlist = face_data->tlist; + + hb_blob_t *blob = nullptr; + + for (hb_graphite2_tablelist_t *p = tlist; p; p = p->next) + if (p->tag == tag) { + blob = p->blob; + break; + } + + if (unlikely (!blob)) + { + blob = face_data->face->reference_table (tag); + + hb_graphite2_tablelist_t *p = (hb_graphite2_tablelist_t *) hb_calloc (1, sizeof (hb_graphite2_tablelist_t)); + if (unlikely (!p)) { + hb_blob_destroy (blob); + return nullptr; + } + p->blob = blob; + p->tag = tag; + +retry: + hb_graphite2_tablelist_t *tlist = face_data->tlist; + p->next = tlist; + + if (unlikely (!face_data->tlist.cmpexch (tlist, p))) + goto retry; + } + + unsigned int tlen; + const char *d = hb_blob_get_data (blob, &tlen); + *len = tlen; + return d; +} + +hb_graphite2_face_data_t * +_hb_graphite2_shaper_face_data_create (hb_face_t *face) +{ + hb_blob_t *silf_blob = face->reference_table (HB_GRAPHITE2_TAG_SILF); + /* Umm, we just reference the table to check whether it exists. + * Maybe add better API for this? */ + if (!hb_blob_get_length (silf_blob)) + { + hb_blob_destroy (silf_blob); + return nullptr; + } + hb_blob_destroy (silf_blob); + + hb_graphite2_face_data_t *data = (hb_graphite2_face_data_t *) hb_calloc (1, sizeof (hb_graphite2_face_data_t)); + if (unlikely (!data)) + return nullptr; + + data->face = face; + const gr_face_ops ops = {sizeof(gr_face_ops), &hb_graphite2_get_table, NULL}; + data->grface = gr_make_face_with_ops (data, &ops, gr_face_preloadAll); + + if (unlikely (!data->grface)) { + hb_free (data); + return nullptr; + } + + return data; +} + +void +_hb_graphite2_shaper_face_data_destroy (hb_graphite2_face_data_t *data) +{ + hb_graphite2_tablelist_t *tlist = data->tlist; + + while (tlist) + { + hb_graphite2_tablelist_t *old = tlist; + hb_blob_destroy (tlist->blob); + tlist = tlist->next; + hb_free (old); + } + + gr_face_destroy (data->grface); + + hb_free (data); +} + +/** + * hb_graphite2_face_get_gr_face: (skip) + * @face: @hb_face_t to query + * + * Fetches the Graphite2 gr_face corresponding to the specified + * #hb_face_t face object. + * + * Return value: the gr_face found + * + * Since: 0.9.10 + */ +gr_face * +hb_graphite2_face_get_gr_face (hb_face_t *face) +{ + const hb_graphite2_face_data_t *data = face->data.graphite2; + return data ? data->grface : nullptr; +} + + +/* + * shaper font data + */ + +struct hb_graphite2_font_data_t {}; + +hb_graphite2_font_data_t * +_hb_graphite2_shaper_font_data_create (hb_font_t *font HB_UNUSED) +{ + return (hb_graphite2_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; +} + +void +_hb_graphite2_shaper_font_data_destroy (hb_graphite2_font_data_t *data HB_UNUSED) +{ +} + +#ifndef HB_DISABLE_DEPRECATED +/** + * hb_graphite2_font_get_gr_font: (skip) + * @font: An #hb_font_t + * + * Always returns `NULL`. Use hb_graphite2_face_get_gr_face() instead. + * + * Return value: (nullable): Graphite2 font associated with @font. + * + * Since: 0.9.10 + * Deprecated: 1.4.2 + */ +gr_font * +hb_graphite2_font_get_gr_font (hb_font_t *font HB_UNUSED) +{ + return nullptr; +} +#endif + + +/* + * shaper + */ + +struct hb_graphite2_cluster_t { + unsigned int base_char; + unsigned int num_chars; + unsigned int base_glyph; + unsigned int num_glyphs; + unsigned int cluster; + int advance; +}; + +hb_bool_t +_hb_graphite2_shape (hb_shape_plan_t *shape_plan HB_UNUSED, + hb_font_t *font, + hb_buffer_t *buffer, + const hb_feature_t *features, + unsigned int num_features) +{ + hb_face_t *face = font->face; + gr_face *grface = face->data.graphite2->grface; + + const char *lang = hb_language_to_string (hb_buffer_get_language (buffer)); + const char *lang_end = lang ? strchr (lang, '-') : nullptr; + int lang_len = lang_end ? lang_end - lang : -1; + gr_feature_val *feats = gr_face_featureval_for_lang (grface, lang ? hb_tag_from_string (lang, lang_len) : 0); + + for (unsigned int i = 0; i < num_features; i++) + { + const gr_feature_ref *fref = gr_face_find_fref (grface, features[i].tag); + if (fref) + gr_fref_set_feature_value (fref, features[i].value, feats); + } + + gr_segment *seg = nullptr; + const gr_slot *is; + unsigned int ci = 0, ic = 0; + unsigned int curradvx = 0, curradvy = 0; + + unsigned int scratch_size; + hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size); + + uint32_t *chars = (uint32_t *) scratch; + + for (unsigned int i = 0; i < buffer->len; ++i) + chars[i] = buffer->info[i].codepoint; + + /* TODO ensure_native_direction. */ + + hb_tag_t script_tag[HB_OT_MAX_TAGS_PER_SCRIPT]; + unsigned int count = HB_OT_MAX_TAGS_PER_SCRIPT; + hb_ot_tags_from_script_and_language (hb_buffer_get_script (buffer), + HB_LANGUAGE_INVALID, + &count, + script_tag, + nullptr, nullptr); + + seg = gr_make_seg (nullptr, grface, + count ? script_tag[count - 1] : HB_OT_TAG_DEFAULT_SCRIPT, + feats, + gr_utf32, chars, buffer->len, + 2 | (hb_buffer_get_direction (buffer) == HB_DIRECTION_RTL ? 1 : 0)); + + if (unlikely (!seg)) { + if (feats) gr_featureval_destroy (feats); + return false; + } + + unsigned int glyph_count = gr_seg_n_slots (seg); + if (unlikely (!glyph_count)) { + if (feats) gr_featureval_destroy (feats); + gr_seg_destroy (seg); + buffer->len = 0; + return true; + } + + (void) buffer->ensure (glyph_count); + scratch = buffer->get_scratch_buffer (&scratch_size); + while ((DIV_CEIL (sizeof (hb_graphite2_cluster_t) * buffer->len, sizeof (*scratch)) + + DIV_CEIL (sizeof (hb_codepoint_t) * glyph_count, sizeof (*scratch))) > scratch_size) + { + if (unlikely (!buffer->ensure (buffer->allocated * 2))) + { + if (feats) gr_featureval_destroy (feats); + gr_seg_destroy (seg); + return false; + } + scratch = buffer->get_scratch_buffer (&scratch_size); + } + +#define ALLOCATE_ARRAY(Type, name, len) \ + Type *name = (Type *) scratch; \ + do { \ + unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \ + assert (_consumed <= scratch_size); \ + scratch += _consumed; \ + scratch_size -= _consumed; \ + } while (0) + + ALLOCATE_ARRAY (hb_graphite2_cluster_t, clusters, buffer->len); + ALLOCATE_ARRAY (hb_codepoint_t, gids, glyph_count); + +#undef ALLOCATE_ARRAY + + hb_memset (clusters, 0, sizeof (clusters[0]) * buffer->len); + + hb_codepoint_t *pg = gids; + clusters[0].cluster = buffer->info[0].cluster; + unsigned int upem = hb_face_get_upem (face); + float xscale = (float) font->x_scale / upem; + float yscale = (float) font->y_scale / upem; + yscale *= yscale / xscale; + unsigned int curradv = 0; + if (HB_DIRECTION_IS_BACKWARD(buffer->props.direction)) + { + curradv = gr_slot_origin_X(gr_seg_first_slot(seg)) * xscale; + clusters[0].advance = gr_seg_advance_X(seg) * xscale - curradv; + } + else + clusters[0].advance = 0; + for (is = gr_seg_first_slot (seg), ic = 0; is; is = gr_slot_next_in_segment (is), ic++) + { + unsigned int before = gr_slot_before (is); + unsigned int after = gr_slot_after (is); + *pg = gr_slot_gid (is); + pg++; + while (clusters[ci].base_char > before && ci) + { + clusters[ci-1].num_chars += clusters[ci].num_chars; + clusters[ci-1].num_glyphs += clusters[ci].num_glyphs; + clusters[ci-1].advance += clusters[ci].advance; + ci--; + } + + if (gr_slot_can_insert_before (is) && clusters[ci].num_chars && before >= clusters[ci].base_char + clusters[ci].num_chars) + { + hb_graphite2_cluster_t *c = clusters + ci + 1; + c->base_char = clusters[ci].base_char + clusters[ci].num_chars; + c->cluster = buffer->info[c->base_char].cluster; + c->num_chars = before - c->base_char; + c->base_glyph = ic; + c->num_glyphs = 0; + if (HB_DIRECTION_IS_BACKWARD(buffer->props.direction)) + { + c->advance = curradv - gr_slot_origin_X(is) * xscale; + curradv -= c->advance; + } + else + { + c->advance = 0; + clusters[ci].advance += gr_slot_origin_X(is) * xscale - curradv; + curradv += clusters[ci].advance; + } + ci++; + } + clusters[ci].num_glyphs++; + + if (clusters[ci].base_char + clusters[ci].num_chars < after + 1) + clusters[ci].num_chars = after + 1 - clusters[ci].base_char; + } + + if (HB_DIRECTION_IS_BACKWARD(buffer->props.direction)) + clusters[ci].advance += curradv; + else + clusters[ci].advance += gr_seg_advance_X(seg) * xscale - curradv; + ci++; + + for (unsigned int i = 0; i < ci; ++i) + { + for (unsigned int j = 0; j < clusters[i].num_glyphs; ++j) + { + hb_glyph_info_t *info = &buffer->info[clusters[i].base_glyph + j]; + info->codepoint = gids[clusters[i].base_glyph + j]; + info->cluster = clusters[i].cluster; + info->var1.i32 = clusters[i].advance; // all glyphs in the cluster get the same advance + } + } + buffer->len = glyph_count; + + /* Positioning. */ + unsigned int currclus = UINT_MAX; + const hb_glyph_info_t *info = buffer->info; + hb_glyph_position_t *pPos = hb_buffer_get_glyph_positions (buffer, nullptr); + if (!HB_DIRECTION_IS_BACKWARD(buffer->props.direction)) + { + curradvx = 0; + for (is = gr_seg_first_slot (seg); is; pPos++, ++info, is = gr_slot_next_in_segment (is)) + { + pPos->x_offset = gr_slot_origin_X (is) * xscale - curradvx; + pPos->y_offset = gr_slot_origin_Y (is) * yscale - curradvy; + if (info->cluster != currclus) { + pPos->x_advance = info->var1.i32; + curradvx += pPos->x_advance; + currclus = info->cluster; + } else + pPos->x_advance = 0.; + + pPos->y_advance = gr_slot_advance_Y (is, grface, nullptr) * yscale; + curradvy += pPos->y_advance; + } + } + else + { + curradvx = gr_seg_advance_X(seg) * xscale; + for (is = gr_seg_first_slot (seg); is; pPos++, info++, is = gr_slot_next_in_segment (is)) + { + if (info->cluster != currclus) + { + pPos->x_advance = info->var1.i32; + curradvx -= pPos->x_advance; + currclus = info->cluster; + } else + pPos->x_advance = 0.; + + pPos->y_advance = gr_slot_advance_Y (is, grface, nullptr) * yscale; + curradvy -= pPos->y_advance; + pPos->x_offset = gr_slot_origin_X (is) * xscale - info->var1.i32 - curradvx + pPos->x_advance; + pPos->y_offset = gr_slot_origin_Y (is) * yscale - curradvy; + } + hb_buffer_reverse_clusters (buffer); + } + + if (feats) gr_featureval_destroy (feats); + gr_seg_destroy (seg); + + buffer->clear_glyph_flags (); + buffer->unsafe_to_break (); + + return true; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-graphite2.h b/gfx/harfbuzz/src/hb-graphite2.h new file mode 100644 index 0000000000..ee9229b8b0 --- /dev/null +++ b/gfx/harfbuzz/src/hb-graphite2.h @@ -0,0 +1,61 @@ +/* + * Copyright © 2011 Martin Hosken + * Copyright © 2011 SIL International + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_GRAPHITE2_H +#define HB_GRAPHITE2_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + +/** + * HB_GRAPHITE2_TAG_SILF: + * + * The #hb_tag_t tag for the `Silf` table, which holds Graphite + * features. + * + * For more information, see http://graphite.sil.org/ + * + **/ +#define HB_GRAPHITE2_TAG_SILF HB_TAG('S','i','l','f') + + +HB_EXTERN gr_face * +hb_graphite2_face_get_gr_face (hb_face_t *face); + +#ifndef HB_DISABLE_DEPRECATED + +HB_DEPRECATED_FOR (hb_graphite2_face_get_gr_face) +HB_EXTERN gr_font * +hb_graphite2_font_get_gr_font (hb_font_t *font); + +#endif + + +HB_END_DECLS + +#endif /* HB_GRAPHITE2_H */ diff --git a/gfx/harfbuzz/src/hb-icu.cc b/gfx/harfbuzz/src/hb-icu.cc new file mode 100644 index 0000000000..e46401f7a6 --- /dev/null +++ b/gfx/harfbuzz/src/hb-icu.cc @@ -0,0 +1,290 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2009 Keith Stribley + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#ifdef HAVE_ICU + +#include "hb-icu.h" + +#include "hb-machinery.hh" + +#include +#include +#include +#include +#include + +/* ICU extra semicolon, fixed since 65, https://github.com/unicode-org/icu/commit/480bec3 */ +#if U_ICU_VERSION_MAJOR_NUM < 65 && (defined(__GNUC__) || defined(__clang__)) +#define HB_ICU_EXTRA_SEMI_IGNORED +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wextra-semi-stmt" +#endif + +/** + * SECTION:hb-icu + * @title: hb-icu + * @short_description: ICU integration + * @include: hb-icu.h + * + * Functions for using HarfBuzz with the International Components for Unicode + * (ICU) library. HarfBuzz supports using ICU to provide Unicode data, by attaching + * ICU functions to the virtual methods in a #hb_unicode_funcs_t function + * structure. + **/ + +/** + * hb_icu_script_to_script: + * @script: The UScriptCode identifier to query + * + * Fetches the #hb_script_t script that corresponds to the + * specified UScriptCode identifier. + * + * Return value: the #hb_script_t script found + * + **/ + +hb_script_t +hb_icu_script_to_script (UScriptCode script) +{ + if (unlikely (script == USCRIPT_INVALID_CODE)) + return HB_SCRIPT_INVALID; + + return hb_script_from_string (uscript_getShortName (script), -1); +} + +/** + * hb_icu_script_from_script: + * @script: The #hb_script_t script to query + * + * Fetches the UScriptCode identifier that corresponds to the + * specified #hb_script_t script. + * + * Return value: the UScriptCode identifier found + * + **/ +UScriptCode +hb_icu_script_from_script (hb_script_t script) +{ + if (unlikely (script == HB_SCRIPT_INVALID)) + return USCRIPT_INVALID_CODE; + + unsigned int numScriptCode = 1 + u_getIntPropertyMaxValue (UCHAR_SCRIPT); + for (unsigned int i = 0; i < numScriptCode; i++) + if (unlikely (hb_icu_script_to_script ((UScriptCode) i) == script)) + return (UScriptCode) i; + + return USCRIPT_UNKNOWN; +} + + +static hb_unicode_combining_class_t +hb_icu_unicode_combining_class (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) + +{ + return (hb_unicode_combining_class_t) u_getCombiningClass (unicode); +} + +static hb_unicode_general_category_t +hb_icu_unicode_general_category (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) +{ + switch (u_getIntPropertyValue(unicode, UCHAR_GENERAL_CATEGORY)) + { + case U_UNASSIGNED: return HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED; + + case U_UPPERCASE_LETTER: return HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER; + case U_LOWERCASE_LETTER: return HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER; + case U_TITLECASE_LETTER: return HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER; + case U_MODIFIER_LETTER: return HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER; + case U_OTHER_LETTER: return HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER; + + case U_NON_SPACING_MARK: return HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK; + case U_ENCLOSING_MARK: return HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK; + case U_COMBINING_SPACING_MARK: return HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK; + + case U_DECIMAL_DIGIT_NUMBER: return HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER; + case U_LETTER_NUMBER: return HB_UNICODE_GENERAL_CATEGORY_LETTER_NUMBER; + case U_OTHER_NUMBER: return HB_UNICODE_GENERAL_CATEGORY_OTHER_NUMBER; + + case U_SPACE_SEPARATOR: return HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; + case U_LINE_SEPARATOR: return HB_UNICODE_GENERAL_CATEGORY_LINE_SEPARATOR; + case U_PARAGRAPH_SEPARATOR: return HB_UNICODE_GENERAL_CATEGORY_PARAGRAPH_SEPARATOR; + + case U_CONTROL_CHAR: return HB_UNICODE_GENERAL_CATEGORY_CONTROL; + case U_FORMAT_CHAR: return HB_UNICODE_GENERAL_CATEGORY_FORMAT; + case U_PRIVATE_USE_CHAR: return HB_UNICODE_GENERAL_CATEGORY_PRIVATE_USE; + case U_SURROGATE: return HB_UNICODE_GENERAL_CATEGORY_SURROGATE; + + + case U_DASH_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_DASH_PUNCTUATION; + case U_START_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_OPEN_PUNCTUATION; + case U_END_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_CLOSE_PUNCTUATION; + case U_CONNECTOR_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_CONNECT_PUNCTUATION; + case U_OTHER_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_OTHER_PUNCTUATION; + + case U_MATH_SYMBOL: return HB_UNICODE_GENERAL_CATEGORY_MATH_SYMBOL; + case U_CURRENCY_SYMBOL: return HB_UNICODE_GENERAL_CATEGORY_CURRENCY_SYMBOL; + case U_MODIFIER_SYMBOL: return HB_UNICODE_GENERAL_CATEGORY_MODIFIER_SYMBOL; + case U_OTHER_SYMBOL: return HB_UNICODE_GENERAL_CATEGORY_OTHER_SYMBOL; + + case U_INITIAL_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_INITIAL_PUNCTUATION; + case U_FINAL_PUNCTUATION: return HB_UNICODE_GENERAL_CATEGORY_FINAL_PUNCTUATION; + } + + return HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED; +} + +static hb_codepoint_t +hb_icu_unicode_mirroring (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) +{ + return u_charMirror(unicode); +} + +static hb_script_t +hb_icu_unicode_script (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t unicode, + void *user_data HB_UNUSED) +{ + UErrorCode status = U_ZERO_ERROR; + UScriptCode scriptCode = uscript_getScript(unicode, &status); + + if (unlikely (U_FAILURE (status))) + return HB_SCRIPT_UNKNOWN; + + return hb_icu_script_to_script (scriptCode); +} + +static hb_bool_t +hb_icu_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t a, + hb_codepoint_t b, + hb_codepoint_t *ab, + void *user_data) +{ + const UNormalizer2 *normalizer = (const UNormalizer2 *) user_data; + UChar32 ret = unorm2_composePair (normalizer, a, b); + if (ret < 0) return false; + *ab = ret; + return true; +} + +static hb_bool_t +hb_icu_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, + hb_codepoint_t ab, + hb_codepoint_t *a, + hb_codepoint_t *b, + void *user_data) +{ + const UNormalizer2 *normalizer = (const UNormalizer2 *) user_data; + UChar decomposed[4]; + int len; + UErrorCode icu_err = U_ZERO_ERROR; + len = unorm2_getRawDecomposition (normalizer, ab, decomposed, + ARRAY_LENGTH (decomposed), &icu_err); + if (U_FAILURE (icu_err) || len < 0) return false; + + len = u_countChar32 (decomposed, len); + if (len == 1) + { + U16_GET_UNSAFE (decomposed, 0, *a); + *b = 0; + return *a != ab; + } + else if (len == 2) + { + len = 0; + U16_NEXT_UNSAFE (decomposed, len, *a); + U16_NEXT_UNSAFE (decomposed, len, *b); + } + return true; +} + + +static inline void free_static_icu_funcs (); + +static struct hb_icu_unicode_funcs_lazy_loader_t : hb_unicode_funcs_lazy_loader_t +{ + static hb_unicode_funcs_t *create () + { + void *user_data = nullptr; + UErrorCode icu_err = U_ZERO_ERROR; + user_data = (void *) unorm2_getNFCInstance (&icu_err); + assert (user_data); + + hb_unicode_funcs_t *funcs = hb_unicode_funcs_create (nullptr); + + hb_unicode_funcs_set_combining_class_func (funcs, hb_icu_unicode_combining_class, nullptr, nullptr); + hb_unicode_funcs_set_general_category_func (funcs, hb_icu_unicode_general_category, nullptr, nullptr); + hb_unicode_funcs_set_mirroring_func (funcs, hb_icu_unicode_mirroring, nullptr, nullptr); + hb_unicode_funcs_set_script_func (funcs, hb_icu_unicode_script, nullptr, nullptr); + hb_unicode_funcs_set_compose_func (funcs, hb_icu_unicode_compose, user_data, nullptr); + hb_unicode_funcs_set_decompose_func (funcs, hb_icu_unicode_decompose, user_data, nullptr); + + hb_unicode_funcs_make_immutable (funcs); + + hb_atexit (free_static_icu_funcs); + + return funcs; + } +} static_icu_funcs; + +static inline +void free_static_icu_funcs () +{ + static_icu_funcs.free_instance (); +} + +/** + * hb_icu_get_unicode_funcs: + * + * Fetches a Unicode-functions structure that is populated + * with the appropriate ICU function for each method. + * + * Return value: (transfer none): a pointer to the #hb_unicode_funcs_t Unicode-functions structure + * + * Since: 0.9.38 + **/ +hb_unicode_funcs_t * +hb_icu_get_unicode_funcs () +{ + return static_icu_funcs.get_unconst (); +} + +#ifdef HB_ICU_EXTRA_SEMI_IGNORED +#pragma GCC diagnostic pop +#endif + +#endif diff --git a/gfx/harfbuzz/src/hb-icu.h b/gfx/harfbuzz/src/hb-icu.h new file mode 100644 index 0000000000..2db6a7b679 --- /dev/null +++ b/gfx/harfbuzz/src/hb-icu.h @@ -0,0 +1,52 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_ICU_H +#define HB_ICU_H + +#include "hb.h" + +#include + +HB_BEGIN_DECLS + + +HB_EXTERN hb_script_t +hb_icu_script_to_script (UScriptCode script); + +HB_EXTERN UScriptCode +hb_icu_script_from_script (hb_script_t script); + + +HB_EXTERN hb_unicode_funcs_t * +hb_icu_get_unicode_funcs (void); + + +HB_END_DECLS + +#endif /* HB_ICU_H */ diff --git a/gfx/harfbuzz/src/hb-iter.hh b/gfx/harfbuzz/src/hb-iter.hh new file mode 100644 index 0000000000..b123b2f27c --- /dev/null +++ b/gfx/harfbuzz/src/hb-iter.hh @@ -0,0 +1,1026 @@ +/* + * Copyright © 2018 Google, Inc. + * Copyright © 2019 Facebook, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + * Facebook Author(s): Behdad Esfahbod + */ + +#ifndef HB_ITER_HH +#define HB_ITER_HH + +#include "hb.hh" +#include "hb-algs.hh" +#include "hb-meta.hh" + + +/* Unified iterator object. + * + * The goal of this template is to make the same iterator interface + * available to all types, and make it very easy and compact to use. + * hb_iter_tator objects are small, light-weight, objects that can be + * copied by value. If the collection / object being iterated on + * is writable, then the iterator returns lvalues, otherwise it + * returns rvalues. + * + * If iterator implementation implements operator!=, then it can be + * used in range-based for loop. That already happens if the iterator + * is random-access. Otherwise, the range-based for loop incurs + * one traversal to find end(), which can be avoided if written + * as a while-style for loop, or if iterator implements a faster + * __end__() method. */ + +/* + * Base classes for iterators. + */ + +/* Base class for all iterators. */ +template +struct hb_iter_t +{ + typedef Item item_t; + constexpr unsigned get_item_size () const { return hb_static_size (Item); } + static constexpr bool is_iterator = true; + static constexpr bool is_random_access_iterator = false; + static constexpr bool is_sorted_iterator = false; + + private: + /* https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern */ + const iter_t* thiz () const { return static_cast (this); } + iter_t* thiz () { return static_cast< iter_t *> (this); } + public: + + /* Operators. */ + iter_t iter () const { return *thiz(); } + iter_t operator + () const { return *thiz(); } + iter_t _begin () const { return *thiz(); } + iter_t begin () const { return _begin (); } + iter_t _end () const { return thiz()->__end__ (); } + iter_t end () const { return _end (); } + explicit operator bool () const { return thiz()->__more__ (); } + unsigned len () const { return thiz()->__len__ (); } + /* The following can only be enabled if item_t is reference type. Otherwise + * it will be returning pointer to temporary rvalue. */ + template ::value)> + hb_remove_reference* operator -> () const { return std::addressof (**thiz()); } + item_t operator * () const { return thiz()->__item__ (); } + item_t operator * () { return thiz()->__item__ (); } + item_t operator [] (unsigned i) const { return thiz()->__item_at__ (i); } + item_t operator [] (unsigned i) { return thiz()->__item_at__ (i); } + iter_t& operator += (unsigned count) & { thiz()->__forward__ (count); return *thiz(); } + iter_t operator += (unsigned count) && { thiz()->__forward__ (count); return *thiz(); } + iter_t& operator ++ () & { thiz()->__next__ (); return *thiz(); } + iter_t operator ++ () && { thiz()->__next__ (); return *thiz(); } + iter_t& operator -= (unsigned count) & { thiz()->__rewind__ (count); return *thiz(); } + iter_t operator -= (unsigned count) && { thiz()->__rewind__ (count); return *thiz(); } + iter_t& operator -- () & { thiz()->__prev__ (); return *thiz(); } + iter_t operator -- () && { thiz()->__prev__ (); return *thiz(); } + iter_t operator + (unsigned count) const { auto c = thiz()->iter (); c += count; return c; } + friend iter_t operator + (unsigned count, const iter_t &it) { return it + count; } + iter_t operator ++ (int) { iter_t c (*thiz()); ++*thiz(); return c; } + iter_t operator - (unsigned count) const { auto c = thiz()->iter (); c -= count; return c; } + iter_t operator -- (int) { iter_t c (*thiz()); --*thiz(); return c; } + template + iter_t& operator >> (T &v) & { v = **thiz(); ++*thiz(); return *thiz(); } + template + iter_t operator >> (T &v) && { v = **thiz(); ++*thiz(); return *thiz(); } + template + iter_t& operator << (const T v) & { **thiz() = v; ++*thiz(); return *thiz(); } + template + iter_t operator << (const T v) && { **thiz() = v; ++*thiz(); return *thiz(); } + + protected: + hb_iter_t () = default; + hb_iter_t (const hb_iter_t &o HB_UNUSED) = default; + hb_iter_t (hb_iter_t &&o HB_UNUSED) = default; + hb_iter_t& operator = (const hb_iter_t &o HB_UNUSED) = default; + hb_iter_t& operator = (hb_iter_t &&o HB_UNUSED) = default; +}; + +#define HB_ITER_USING(Name) \ + using item_t = typename Name::item_t; \ + using Name::_begin; \ + using Name::begin; \ + using Name::_end; \ + using Name::end; \ + using Name::get_item_size; \ + using Name::is_iterator; \ + using Name::iter; \ + using Name::operator bool; \ + using Name::len; \ + using Name::operator ->; \ + using Name::operator *; \ + using Name::operator []; \ + using Name::operator +=; \ + using Name::operator ++; \ + using Name::operator -=; \ + using Name::operator --; \ + using Name::operator +; \ + using Name::operator -; \ + using Name::operator >>; \ + using Name::operator <<; \ + static_assert (true, "") + +/* Returns iterator / item type of a type. */ +template +using hb_iter_type = decltype (hb_deref (hb_declval (Iterable)).iter ()); +template +using hb_item_type = decltype (*hb_deref (hb_declval (Iterable)).iter ()); + + +template struct hb_array_t; +template struct hb_sorted_array_t; + +struct +{ + template hb_iter_type + operator () (T&& c) const + { return hb_deref (std::forward (c)).iter (); } + + /* Specialization for C arrays. */ + + template inline hb_array_t + operator () (Type *array, unsigned int length) const + { return hb_array_t (array, length); } + + template hb_array_t + operator () (Type (&array)[length]) const + { return hb_array_t (array, length); } + +} +HB_FUNCOBJ (hb_iter); +struct +{ + template auto + impl (T&& c, hb_priority<1>) const HB_RETURN (unsigned, c.len ()) + + template auto + impl (T&& c, hb_priority<0>) const HB_RETURN (unsigned, c.len) + + public: + + template auto + operator () (T&& c) const HB_RETURN (unsigned, impl (std::forward (c), hb_prioritize)) +} +HB_FUNCOBJ (hb_len); + +/* Mixin to fill in what the subclass doesn't provide. */ +template +struct hb_iter_fallback_mixin_t +{ + private: + /* https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern */ + const iter_t* thiz () const { return static_cast (this); } + iter_t* thiz () { return static_cast< iter_t *> (this); } + public: + + /* Access: Implement __item__(), or __item_at__() if random-access. */ + item_t __item__ () const { return (*thiz())[0]; } + item_t __item_at__ (unsigned i) const { return *(*thiz() + i); } + + /* Termination: Implement __more__(), or __len__() if random-access. */ + bool __more__ () const { return bool (thiz()->len ()); } + unsigned __len__ () const + { iter_t c (*thiz()); unsigned l = 0; while (c) { c++; l++; } return l; } + + /* Advancing: Implement __next__(), or __forward__() if random-access. */ + void __next__ () { *thiz() += 1; } + void __forward__ (unsigned n) { while (*thiz() && n--) ++*thiz(); } + + /* Rewinding: Implement __prev__() or __rewind__() if bidirectional. */ + void __prev__ () { *thiz() -= 1; } + void __rewind__ (unsigned n) { while (*thiz() && n--) --*thiz(); } + + /* Range-based for: Implement __end__() if can be done faster, + * and operator!=. */ + iter_t __end__ () const + { + if (thiz()->is_random_access_iterator) + return *thiz() + thiz()->len (); + /* Above expression loops twice. Following loops once. */ + auto it = *thiz(); + while (it) ++it; + return it; + } + + protected: + hb_iter_fallback_mixin_t () = default; + hb_iter_fallback_mixin_t (const hb_iter_fallback_mixin_t &o HB_UNUSED) = default; + hb_iter_fallback_mixin_t (hb_iter_fallback_mixin_t &&o HB_UNUSED) = default; + hb_iter_fallback_mixin_t& operator = (const hb_iter_fallback_mixin_t &o HB_UNUSED) = default; + hb_iter_fallback_mixin_t& operator = (hb_iter_fallback_mixin_t &&o HB_UNUSED) = default; +}; + +template +struct hb_iter_with_fallback_t : + hb_iter_t, + hb_iter_fallback_mixin_t +{ + protected: + hb_iter_with_fallback_t () = default; + hb_iter_with_fallback_t (const hb_iter_with_fallback_t &o HB_UNUSED) = default; + hb_iter_with_fallback_t (hb_iter_with_fallback_t &&o HB_UNUSED) = default; + hb_iter_with_fallback_t& operator = (const hb_iter_with_fallback_t &o HB_UNUSED) = default; + hb_iter_with_fallback_t& operator = (hb_iter_with_fallback_t &&o HB_UNUSED) = default; +}; + +/* + * Meta-programming predicates. + */ + +/* hb_is_iterator() / hb_is_iterator_of() */ + +template +struct hb_is_iterator_of +{ + template + static hb_true_type impl (hb_priority<2>, hb_iter_t> *); + static hb_false_type impl (hb_priority<0>, const void *); + + public: + static constexpr bool value = decltype (impl (hb_prioritize, hb_declval (Iter*)))::value; +}; +#define hb_is_iterator_of(Iter, Item) hb_is_iterator_of::value +#define hb_is_iterator(Iter) hb_is_iterator_of (Iter, typename Iter::item_t) +#define hb_is_sorted_iterator_of(Iter, Item) (hb_is_iterator_of::value && Iter::is_sorted_iterator) +#define hb_is_sorted_iterator(Iter) hb_is_sorted_iterator_of (Iter, typename Iter::item_t) + +/* hb_is_iterable() */ + +template +struct hb_is_iterable +{ + private: + + template + static auto impl (hb_priority<1>) -> decltype (hb_declval (U).iter (), hb_true_type ()); + + template + static hb_false_type impl (hb_priority<0>); + + public: + static constexpr bool value = decltype (impl (hb_prioritize))::value; +}; +#define hb_is_iterable(Iterable) hb_is_iterable::value + +/* hb_is_source_of() / hb_is_sink_of() */ + +template +struct hb_is_source_of +{ + private: + template ))> + static hb_true_type impl (hb_priority<2>); + template + static auto impl (hb_priority<1>) -> decltype (hb_declval (Iter2) >> hb_declval (Item &), hb_true_type ()); + static hb_false_type impl (hb_priority<0>); + + public: + static constexpr bool value = decltype (impl (hb_prioritize))::value; +}; +#define hb_is_source_of(Iter, Item) hb_is_source_of::value + +template +struct hb_is_sink_of +{ + private: + template ))> + static hb_true_type impl (hb_priority<2>); + template + static auto impl (hb_priority<1>) -> decltype (hb_declval (Iter2) << hb_declval (Item), hb_true_type ()); + static hb_false_type impl (hb_priority<0>); + + public: + static constexpr bool value = decltype (impl (hb_prioritize))::value; +}; +#define hb_is_sink_of(Iter, Item) hb_is_sink_of::value + +/* This is commonly used, so define: */ +#define hb_is_sorted_source_of(Iter, Item) \ + (hb_is_source_of(Iter, Item) && Iter::is_sorted_iterator) + + +/* Range-based 'for' for iterables. */ + +template +static inline auto begin (Iterable&& iterable) HB_AUTO_RETURN (hb_iter (iterable).begin ()) + +template +static inline auto end (Iterable&& iterable) HB_AUTO_RETURN (hb_iter (iterable).end ()) + +/* begin()/end() are NOT looked up non-ADL. So each namespace must declare them. + * Do it for namespace OT. */ +namespace OT { + +template +static inline auto begin (Iterable&& iterable) HB_AUTO_RETURN (hb_iter (iterable).begin ()) + +template +static inline auto end (Iterable&& iterable) HB_AUTO_RETURN (hb_iter (iterable).end ()) + +} + + +/* + * Adaptors, combiners, etc. + */ + +template +static inline auto +operator | (Lhs&& lhs, Rhs&& rhs) HB_AUTO_RETURN (std::forward (rhs) (std::forward (lhs))) + +/* hb_map(), hb_filter(), hb_reduce() */ + +enum class hb_function_sortedness_t { + NOT_SORTED, + RETAINS_SORTING, + SORTED, +}; + +template +struct hb_map_iter_t : + hb_iter_t, + decltype (hb_get (hb_declval (Proj), *hb_declval (Iter)))> +{ + hb_map_iter_t (const Iter& it, Proj f_) : it (it), f (f_) {} + + typedef decltype (hb_get (hb_declval (Proj), *hb_declval (Iter))) __item_t__; + static constexpr bool is_random_access_iterator = Iter::is_random_access_iterator; + static constexpr bool is_sorted_iterator = + Sorted == hb_function_sortedness_t::SORTED ? true : + Sorted == hb_function_sortedness_t::RETAINS_SORTING ? Iter::is_sorted_iterator : + false; + __item_t__ __item__ () const { return hb_get (f.get (), *it); } + __item_t__ __item_at__ (unsigned i) const { return hb_get (f.get (), it[i]); } + bool __more__ () const { return bool (it); } + unsigned __len__ () const { return it.len (); } + void __next__ () { ++it; } + void __forward__ (unsigned n) { it += n; } + void __prev__ () { --it; } + void __rewind__ (unsigned n) { it -= n; } + hb_map_iter_t __end__ () const { return hb_map_iter_t (it._end (), f); } + bool operator != (const hb_map_iter_t& o) const + { return it != o.it; } + + private: + Iter it; + hb_reference_wrapper f; +}; + +template +struct hb_map_iter_factory_t +{ + hb_map_iter_factory_t (Proj f) : f (f) {} + + template + hb_map_iter_t + operator () (Iter it) + { return hb_map_iter_t (it, f); } + + private: + Proj f; +}; +struct +{ + template + hb_map_iter_factory_t + operator () (Proj&& f) const + { return hb_map_iter_factory_t (f); } +} +HB_FUNCOBJ (hb_map); +struct +{ + template + hb_map_iter_factory_t + operator () (Proj&& f) const + { return hb_map_iter_factory_t (f); } +} +HB_FUNCOBJ (hb_map_retains_sorting); +struct +{ + template + hb_map_iter_factory_t + operator () (Proj&& f) const + { return hb_map_iter_factory_t (f); } +} +HB_FUNCOBJ (hb_map_sorted); + +template +struct hb_filter_iter_t : + hb_iter_with_fallback_t, + typename Iter::item_t> +{ + hb_filter_iter_t (const Iter& it_, Pred p_, Proj f_) : it (it_), p (p_), f (f_) + { while (it && !hb_has (p.get (), hb_get (f.get (), *it))) ++it; } + + typedef typename Iter::item_t __item_t__; + static constexpr bool is_sorted_iterator = Iter::is_sorted_iterator; + __item_t__ __item__ () const { return *it; } + bool __more__ () const { return bool (it); } + void __next__ () { do ++it; while (it && !hb_has (p.get (), hb_get (f.get (), *it))); } + void __prev__ () { do --it; while (it && !hb_has (p.get (), hb_get (f.get (), *it))); } + hb_filter_iter_t __end__ () const { return hb_filter_iter_t (it._end (), p, f); } + bool operator != (const hb_filter_iter_t& o) const + { return it != o.it; } + + private: + Iter it; + hb_reference_wrapper p; + hb_reference_wrapper f; +}; +template +struct hb_filter_iter_factory_t +{ + hb_filter_iter_factory_t (Pred p, Proj f) : p (p), f (f) {} + + template + hb_filter_iter_t + operator () (Iter it) + { return hb_filter_iter_t (it, p, f); } + + private: + Pred p; + Proj f; +}; +struct +{ + template + hb_filter_iter_factory_t + operator () (Pred&& p = hb_identity, Proj&& f = hb_identity) const + { return hb_filter_iter_factory_t (p, f); } +} +HB_FUNCOBJ (hb_filter); + +template +struct hb_reduce_t +{ + hb_reduce_t (Redu r, InitT init_value) : r (r), init_value (init_value) {} + + template > + AccuT + operator () (Iter it) + { + AccuT value = init_value; + for (; it; ++it) + value = r (value, *it); + return value; + } + + private: + Redu r; + InitT init_value; +}; +struct +{ + template + hb_reduce_t + operator () (Redu&& r, InitT init_value) const + { return hb_reduce_t (r, init_value); } +} +HB_FUNCOBJ (hb_reduce); + + +/* hb_zip() */ + +template +struct hb_zip_iter_t : + hb_iter_t, + hb_pair_t> +{ + hb_zip_iter_t () {} + hb_zip_iter_t (const A& a, const B& b) : a (a), b (b) {} + + typedef hb_pair_t __item_t__; + static constexpr bool is_random_access_iterator = + A::is_random_access_iterator && + B::is_random_access_iterator; + /* Note. The following categorization is only valid if A is strictly sorted, + * ie. does NOT have duplicates. Previously I tried to categorize sortedness + * more granularly, see commits: + * + * 513762849a683914fc266a17ddf38f133cccf072 + * 4d3cf2adb669c345cc43832d11689271995e160a + * + * However, that was not enough, since hb_sorted_array_t, hb_sorted_vector_t, + * SortedArrayOf, etc all needed to be updated to add more variants. At that + * point I saw it not worth the effort, and instead we now deem all sorted + * collections as essentially strictly-sorted for the purposes of zip. + * + * The above assumption is not as bad as it sounds. Our "sorted" comes with + * no guarantees. It's just a contract, put in place to help you remember, + * and think about, whether an iterator you receive is expected to be + * sorted or not. As such, it's not perfect by definition, and should not + * be treated so. The inaccuracy here just errs in the direction of being + * more permissive, so your code compiles instead of erring on the side of + * marking your zipped iterator unsorted in which case your code won't + * compile. + * + * This semantical limitation does NOT affect logic in any other place I + * know of as of this writing. + */ + static constexpr bool is_sorted_iterator = A::is_sorted_iterator; + + __item_t__ __item__ () const { return __item_t__ (*a, *b); } + __item_t__ __item_at__ (unsigned i) const { return __item_t__ (a[i], b[i]); } + bool __more__ () const { return bool (a) && bool (b); } + unsigned __len__ () const { return hb_min (a.len (), b.len ()); } + void __next__ () { ++a; ++b; } + void __forward__ (unsigned n) { a += n; b += n; } + void __prev__ () { --a; --b; } + void __rewind__ (unsigned n) { a -= n; b -= n; } + hb_zip_iter_t __end__ () const { return hb_zip_iter_t (a._end (), b._end ()); } + /* Note, we should stop if ANY of the iters reaches end. As such two compare + * unequal if both items are unequal, NOT if either is unequal. */ + bool operator != (const hb_zip_iter_t& o) const + { return a != o.a && b != o.b; } + + private: + A a; + B b; +}; +struct +{ HB_PARTIALIZE(2); + template + hb_zip_iter_t, hb_iter_type> + operator () (A&& a, B&& b) const + { return hb_zip_iter_t, hb_iter_type> (hb_iter (a), hb_iter (b)); } +} +HB_FUNCOBJ (hb_zip); + +/* hb_concat() */ + +template +struct hb_concat_iter_t : + hb_iter_t, typename A::item_t> +{ + hb_concat_iter_t () {} + hb_concat_iter_t (A& a, B& b) : a (a), b (b) {} + hb_concat_iter_t (const A& a, const B& b) : a (a), b (b) {} + + + typedef typename A::item_t __item_t__; + static constexpr bool is_random_access_iterator = + A::is_random_access_iterator && + B::is_random_access_iterator; + static constexpr bool is_sorted_iterator = false; + + __item_t__ __item__ () const + { + if (!a) + return *b; + return *a; + } + + __item_t__ __item_at__ (unsigned i) const + { + unsigned a_len = a.len (); + if (i < a_len) + return a[i]; + return b[i - a_len]; + } + + bool __more__ () const { return bool (a) || bool (b); } + + unsigned __len__ () const { return a.len () + b.len (); } + + void __next__ () + { + if (a) + ++a; + else + ++b; + } + + void __forward__ (unsigned n) + { + if (!n) return; + if (!is_random_access_iterator) { + while (n-- && *this) { + (*this)++; + } + return; + } + + unsigned a_len = a.len (); + if (n > a_len) { + n -= a_len; + a.__forward__ (a_len); + b.__forward__ (n); + } else { + a.__forward__ (n); + } + } + + hb_concat_iter_t __end__ () const { return hb_concat_iter_t (a._end (), b._end ()); } + bool operator != (const hb_concat_iter_t& o) const + { + return a != o.a + || b != o.b; + } + + private: + A a; + B b; +}; +struct +{ HB_PARTIALIZE(2); + template + hb_concat_iter_t, hb_iter_type> + operator () (A&& a, B&& b) const + { return hb_concat_iter_t, hb_iter_type> (hb_iter (a), hb_iter (b)); } +} +HB_FUNCOBJ (hb_concat); + +/* hb_apply() */ + +template +struct hb_apply_t +{ + hb_apply_t (Appl a) : a (a) {} + + template + void operator () (Iter it) + { + for (; it; ++it) + (void) hb_invoke (a, *it); + } + + private: + Appl a; +}; +struct +{ + template hb_apply_t + operator () (Appl&& a) const + { return hb_apply_t (a); } + + template hb_apply_t + operator () (Appl *a) const + { return hb_apply_t (*a); } +} +HB_FUNCOBJ (hb_apply); + +/* hb_range()/hb_iota()/hb_repeat() */ + +template +struct hb_range_iter_t : + hb_iter_t, T> +{ + hb_range_iter_t (T start, T end_, S step) : v (start), end_ (end_for (start, end_, step)), step (step) {} + + typedef T __item_t__; + static constexpr bool is_random_access_iterator = true; + static constexpr bool is_sorted_iterator = true; + __item_t__ __item__ () const { return hb_ridentity (v); } + __item_t__ __item_at__ (unsigned j) const { return v + j * step; } + bool __more__ () const { return v != end_; } + unsigned __len__ () const { return !step ? UINT_MAX : (end_ - v) / step; } + void __next__ () { v += step; } + void __forward__ (unsigned n) { v += n * step; } + void __prev__ () { v -= step; } + void __rewind__ (unsigned n) { v -= n * step; } + hb_range_iter_t __end__ () const { return hb_range_iter_t (end_, end_, step); } + bool operator != (const hb_range_iter_t& o) const + { return v != o.v; } + + private: + static inline T end_for (T start, T end_, S step) + { + if (!step) + return end_; + auto res = (end_ - start) % step; + if (!res) + return end_; + end_ += step - res; + return end_; + } + + private: + T v; + T end_; + S step; +}; +struct +{ + template hb_range_iter_t + operator () (T end = (unsigned) -1) const + { return hb_range_iter_t (0, end, 1u); } + + template hb_range_iter_t + operator () (T start, T end, S step = 1u) const + { return hb_range_iter_t (start, end, step); } +} +HB_FUNCOBJ (hb_range); + +template +struct hb_iota_iter_t : + hb_iter_with_fallback_t, T> +{ + hb_iota_iter_t (T start, S step) : v (start), step (step) {} + + private: + + template + auto + inc (hb_type_identity s, hb_priority<1>) + -> hb_void_t (s), hb_declval ()))> + { v = hb_invoke (std::forward (s), v); } + + void + inc (S s, hb_priority<0>) + { v += s; } + + public: + + typedef T __item_t__; + static constexpr bool is_random_access_iterator = true; + static constexpr bool is_sorted_iterator = true; + __item_t__ __item__ () const { return hb_ridentity (v); } + bool __more__ () const { return true; } + unsigned __len__ () const { return UINT_MAX; } + void __next__ () { inc (step, hb_prioritize); } + void __prev__ () { v -= step; } + hb_iota_iter_t __end__ () const { return *this; } + bool operator != (const hb_iota_iter_t& o) const { return true; } + + private: + T v; + S step; +}; +struct +{ + template hb_iota_iter_t + operator () (T start = 0u, S step = 1u) const + { return hb_iota_iter_t (start, step); } +} +HB_FUNCOBJ (hb_iota); + +template +struct hb_repeat_iter_t : + hb_iter_t, T> +{ + hb_repeat_iter_t (T value) : v (value) {} + + typedef T __item_t__; + static constexpr bool is_random_access_iterator = true; + static constexpr bool is_sorted_iterator = true; + __item_t__ __item__ () const { return v; } + __item_t__ __item_at__ (unsigned j) const { return v; } + bool __more__ () const { return true; } + unsigned __len__ () const { return UINT_MAX; } + void __next__ () {} + void __forward__ (unsigned) {} + void __prev__ () {} + void __rewind__ (unsigned) {} + hb_repeat_iter_t __end__ () const { return *this; } + bool operator != (const hb_repeat_iter_t& o) const { return true; } + + private: + T v; +}; +struct +{ + template hb_repeat_iter_t + operator () (T value) const + { return hb_repeat_iter_t (value); } +} +HB_FUNCOBJ (hb_repeat); + +/* hb_enumerate()/hb_take() */ + +struct +{ + template + auto operator () (Iterable&& it, Index start = 0u) const HB_AUTO_RETURN + ( hb_zip (hb_iota (start), it) ) +} +HB_FUNCOBJ (hb_enumerate); + +struct +{ HB_PARTIALIZE(2); + template + auto operator () (Iterable&& it, unsigned count) const HB_AUTO_RETURN + ( hb_zip (hb_range (count), it) | hb_map (hb_second) ) + + /* Specialization arrays. */ + + template inline hb_array_t + operator () (hb_array_t array, unsigned count) const + { return array.sub_array (0, count); } + + template inline hb_sorted_array_t + operator () (hb_sorted_array_t array, unsigned count) const + { return array.sub_array (0, count); } +} +HB_FUNCOBJ (hb_take); + +struct +{ HB_PARTIALIZE(2); + template + auto operator () (Iter it, unsigned count) const HB_AUTO_RETURN + ( + + hb_iota (it, hb_add (count)) + | hb_map (hb_take (count)) + | hb_take ((hb_len (it) + count - 1) / count) + ) +} +HB_FUNCOBJ (hb_chop); + +/* hb_sink() */ + +template +struct hb_sink_t +{ + hb_sink_t (Sink s) : s (s) {} + + template + void operator () (Iter it) + { + for (; it; ++it) + s << *it; + } + + private: + Sink s; +}; +struct +{ + template hb_sink_t + operator () (Sink&& s) const + { return hb_sink_t (s); } + + template hb_sink_t + operator () (Sink *s) const + { return hb_sink_t (*s); } +} +HB_FUNCOBJ (hb_sink); + +/* hb-drain: hb_sink to void / blackhole / /dev/null. */ + +struct +{ + template + void operator () (Iter it) const + { + for (; it; ++it) + (void) *it; + } +} +HB_FUNCOBJ (hb_drain); + +/* hb_unzip(): unzip and sink to two sinks. */ + +template +struct hb_unzip_t +{ + hb_unzip_t (Sink1 s1, Sink2 s2) : s1 (s1), s2 (s2) {} + + template + void operator () (Iter it) + { + for (; it; ++it) + { + const auto &v = *it; + s1 << v.first; + s2 << v.second; + } + } + + private: + Sink1 s1; + Sink2 s2; +}; +struct +{ + template hb_unzip_t + operator () (Sink1&& s1, Sink2&& s2) const + { return hb_unzip_t (s1, s2); } + + template hb_unzip_t + operator () (Sink1 *s1, Sink2 *s2) const + { return hb_unzip_t (*s1, *s2); } +} +HB_FUNCOBJ (hb_unzip); + + +/* hb-all, hb-any, hb-none. */ + +struct +{ + template + bool operator () (Iterable&& c, + Pred&& p = hb_identity, + Proj&& f = hb_identity) const + { + for (auto it = hb_iter (c); it; ++it) + if (!hb_match (std::forward (p), hb_get (std::forward (f), *it))) + return false; + return true; + } +} +HB_FUNCOBJ (hb_all); +struct +{ + template + bool operator () (Iterable&& c, + Pred&& p = hb_identity, + Proj&& f = hb_identity) const + { + for (auto it = hb_iter (c); it; ++it) + if (hb_match (std::forward (p), hb_get (std::forward (f), *it))) + return true; + return false; + } +} +HB_FUNCOBJ (hb_any); +struct +{ + template + bool operator () (Iterable&& c, + Pred&& p = hb_identity, + Proj&& f = hb_identity) const + { + for (auto it = hb_iter (c); it; ++it) + if (hb_match (std::forward (p), hb_get (std::forward (f), *it))) + return false; + return true; + } +} +HB_FUNCOBJ (hb_none); + +/* + * Algorithms operating on iterators. + */ + +template +inline void +hb_fill (C&& c, const V &v) +{ + for (auto i = hb_iter (c); i; i++) + *i = v; +} + +template +inline void +hb_copy (S&& is, D&& id) +{ + hb_iter (is) | hb_sink (id); +} + + +#endif /* HB_ITER_HH */ diff --git a/gfx/harfbuzz/src/hb-kern.hh b/gfx/harfbuzz/src/hb-kern.hh new file mode 100644 index 0000000000..9ea945caed --- /dev/null +++ b/gfx/harfbuzz/src/hb-kern.hh @@ -0,0 +1,145 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_KERN_HH +#define HB_KERN_HH + +#include "hb-open-type.hh" +#include "hb-aat-layout-common.hh" +#include "hb-ot-layout-gpos-table.hh" + + +namespace OT { + + +template +struct hb_kern_machine_t +{ + hb_kern_machine_t (const Driver &driver_, + bool crossStream_ = false) : + driver (driver_), + crossStream (crossStream_) {} + + HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW + void kern (hb_font_t *font, + hb_buffer_t *buffer, + hb_mask_t kern_mask, + bool scale = true) const + { + if (!buffer->message (font, "start kern")) + return; + + buffer->unsafe_to_concat (); + OT::hb_ot_apply_context_t c (1, font, buffer); + c.set_lookup_mask (kern_mask); + c.set_lookup_props (OT::LookupFlag::IgnoreMarks); + auto &skippy_iter = c.iter_input; + + bool horizontal = HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction); + unsigned int count = buffer->len; + hb_glyph_info_t *info = buffer->info; + hb_glyph_position_t *pos = buffer->pos; + for (unsigned int idx = 0; idx < count;) + { + if (!(info[idx].mask & kern_mask)) + { + idx++; + continue; + } + + skippy_iter.reset (idx, 1); + unsigned unsafe_to; + if (!skippy_iter.next (&unsafe_to)) + { + idx++; + continue; + } + + unsigned int i = idx; + unsigned int j = skippy_iter.idx; + + hb_position_t kern = driver.get_kerning (info[i].codepoint, + info[j].codepoint); + + + if (likely (!kern)) + goto skip; + + if (horizontal) + { + if (scale) + kern = font->em_scale_x (kern); + if (crossStream) + { + pos[j].y_offset = kern; + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + } + else + { + hb_position_t kern1 = kern >> 1; + hb_position_t kern2 = kern - kern1; + pos[i].x_advance += kern1; + pos[j].x_advance += kern2; + pos[j].x_offset += kern2; + } + } + else + { + if (scale) + kern = font->em_scale_y (kern); + if (crossStream) + { + pos[j].x_offset = kern; + buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT; + } + else + { + hb_position_t kern1 = kern >> 1; + hb_position_t kern2 = kern - kern1; + pos[i].y_advance += kern1; + pos[j].y_advance += kern2; + pos[j].y_offset += kern2; + } + } + + buffer->unsafe_to_break (i, j + 1); + + skip: + idx = skippy_iter.idx; + } + + (void) buffer->message (font, "end kern"); + } + + const Driver &driver; + bool crossStream; +}; + + +} /* namespace OT */ + + +#endif /* HB_KERN_HH */ diff --git a/gfx/harfbuzz/src/hb-limits.hh b/gfx/harfbuzz/src/hb-limits.hh new file mode 100644 index 0000000000..0f60e9e210 --- /dev/null +++ b/gfx/harfbuzz/src/hb-limits.hh @@ -0,0 +1,109 @@ +/* + * Copyright © 2022 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_LIMITS_HH +#define HB_LIMITS_HH + +#include "hb.hh" + + +#ifndef HB_BUFFER_MAX_LEN_FACTOR +#define HB_BUFFER_MAX_LEN_FACTOR 64 +#endif +#ifndef HB_BUFFER_MAX_LEN_MIN +#define HB_BUFFER_MAX_LEN_MIN 16384 +#endif +#ifndef HB_BUFFER_MAX_LEN_DEFAULT +#define HB_BUFFER_MAX_LEN_DEFAULT 0x3FFFFFFF /* Shaping more than a billion chars? Let us know! */ +#endif + +#ifndef HB_BUFFER_MAX_OPS_FACTOR +#define HB_BUFFER_MAX_OPS_FACTOR 1024 +#endif +#ifndef HB_BUFFER_MAX_OPS_MIN +#define HB_BUFFER_MAX_OPS_MIN 16384 +#endif +#ifndef HB_BUFFER_MAX_OPS_DEFAULT +#define HB_BUFFER_MAX_OPS_DEFAULT 0x1FFFFFFF /* Shaping more than a billion operations? Let us know! */ +#endif + + +#ifndef HB_MAX_NESTING_LEVEL +#define HB_MAX_NESTING_LEVEL 64 +#endif + + +#ifndef HB_MAX_CONTEXT_LENGTH +#define HB_MAX_CONTEXT_LENGTH 64 +#endif + +#ifndef HB_CLOSURE_MAX_STAGES +/* + * The maximum number of times a lookup can be applied during shaping. + * Used to limit the number of iterations of the closure algorithm. + * This must be larger than the number of times add_gsub_pause() is + * called in a collect_features call of any shaper. + */ +#define HB_CLOSURE_MAX_STAGES 12 +#endif + +#ifndef HB_MAX_SCRIPTS +#define HB_MAX_SCRIPTS 500 +#endif + +#ifndef HB_MAX_LANGSYS +#define HB_MAX_LANGSYS 2000 +#endif + +#ifndef HB_MAX_LANGSYS_FEATURE_COUNT +#define HB_MAX_LANGSYS_FEATURE_COUNT 50000 +#endif + +#ifndef HB_MAX_FEATURE_INDICES +#define HB_MAX_FEATURE_INDICES 1500 +#endif + +#ifndef HB_MAX_LOOKUP_VISIT_COUNT +#define HB_MAX_LOOKUP_VISIT_COUNT 35000 +#endif + + +#ifndef HB_GLYF_MAX_POINTS +#define HB_GLYF_MAX_POINTS 20000 +#endif + +#ifndef HB_GLYF_MAX_EDGE_COUNT +#define HB_GLYF_MAX_EDGE_COUNT 1024 +#endif + +#ifndef HB_CFF_MAX_OPS +#define HB_CFF_MAX_OPS 10000 +#endif + +#ifndef HB_COLRV1_MAX_EDGE_COUNT +#define HB_COLRV1_MAX_EDGE_COUNT 1024 +#endif + + +#endif /* HB_LIMITS_HH */ diff --git a/gfx/harfbuzz/src/hb-machinery.hh b/gfx/harfbuzz/src/hb-machinery.hh new file mode 100644 index 0000000000..1084725af2 --- /dev/null +++ b/gfx/harfbuzz/src/hb-machinery.hh @@ -0,0 +1,325 @@ +/* + * Copyright © 2007,2008,2009,2010 Red Hat, Inc. + * Copyright © 2012,2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_MACHINERY_HH +#define HB_MACHINERY_HH + +#include "hb.hh" +#include "hb-blob.hh" + +#include "hb-dispatch.hh" +#include "hb-sanitize.hh" + + +/* + * Casts + */ + +/* StructAtOffset(P,Ofs) returns the struct T& that is placed at memory + * location pointed to by P plus Ofs bytes. */ +template +static inline const Type& StructAtOffset(const void *P, unsigned int offset) +{ return * reinterpret_cast ((const char *) P + offset); } +template +static inline Type& StructAtOffset(void *P, unsigned int offset) +{ return * reinterpret_cast ((char *) P + offset); } +template +static inline const Type& StructAtOffsetUnaligned(const void *P, unsigned int offset) +{ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + return * reinterpret_cast ((const char *) P + offset); +#pragma GCC diagnostic pop +} +template +static inline Type& StructAtOffsetUnaligned(void *P, unsigned int offset) +{ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + return * reinterpret_cast ((char *) P + offset); +#pragma GCC diagnostic pop +} + +/* StructAfter(X) returns the struct T& that is placed after X. + * Works with X of variable size also. X must implement get_size() */ +template +static inline const Type& StructAfter(const TObject &X) +{ return StructAtOffset(&X, X.get_size()); } +template +static inline Type& StructAfter(TObject &X) +{ return StructAtOffset(&X, X.get_size()); } + + +/* + * Size checking + */ + +/* Size signifying variable-sized array */ +#ifndef HB_VAR_ARRAY +#define HB_VAR_ARRAY 1 +#endif + +/* Check _assertion in a method environment */ +#define _DEFINE_INSTANCE_ASSERTION1(_line, _assertion) \ + void _instance_assertion_on_line_##_line () const \ + { static_assert ((_assertion), ""); } +# define _DEFINE_INSTANCE_ASSERTION0(_line, _assertion) _DEFINE_INSTANCE_ASSERTION1 (_line, _assertion) +# define DEFINE_INSTANCE_ASSERTION(_assertion) _DEFINE_INSTANCE_ASSERTION0 (__LINE__, _assertion) + +/* Check that _code compiles in a method environment */ +#define _DEFINE_COMPILES_ASSERTION1(_line, _code) \ + void _compiles_assertion_on_line_##_line () const \ + { _code; } +# define _DEFINE_COMPILES_ASSERTION0(_line, _code) _DEFINE_COMPILES_ASSERTION1 (_line, _code) +# define DEFINE_COMPILES_ASSERTION(_code) _DEFINE_COMPILES_ASSERTION0 (__LINE__, _code) + + +#define DEFINE_SIZE_STATIC(size) \ + DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size)) \ + unsigned int get_size () const { return (size); } \ + static constexpr unsigned null_size = (size); \ + static constexpr unsigned min_size = (size); \ + static constexpr unsigned static_size = (size) + +#define DEFINE_SIZE_UNION(size, _member) \ + DEFINE_COMPILES_ASSERTION ((void) this->u._member.static_size) \ + DEFINE_INSTANCE_ASSERTION (sizeof(this->u._member) == (size)) \ + static constexpr unsigned null_size = (size); \ + static constexpr unsigned min_size = (size) + +#define DEFINE_SIZE_MIN(size) \ + DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)) \ + static constexpr unsigned null_size = (size); \ + static constexpr unsigned min_size = (size) + +#define DEFINE_SIZE_UNBOUNDED(size) \ + DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)) \ + static constexpr unsigned min_size = (size) + +#define DEFINE_SIZE_ARRAY(size, array) \ + DEFINE_COMPILES_ASSERTION ((void) (array)[0].static_size) \ + DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + (HB_VAR_ARRAY+0) * sizeof ((array)[0])) \ + static constexpr unsigned null_size = (size); \ + static constexpr unsigned min_size = (size) + +#define DEFINE_SIZE_ARRAY_SIZED(size, array) \ + unsigned int get_size () const { return (size - (array).min_size + (array).get_size ()); } \ + DEFINE_SIZE_ARRAY(size, array) + + + +/* + * Lazy loaders. + * + * The lazy-loaders are thread-safe pointer-like objects that create their + * instead on-demand. They also support access to a "data" object that is + * necessary for creating their instance. The data object, if specified, + * is accessed via pointer math, located at a location before the position + * of the loader itself. This avoids having to store a pointer to data + * for every lazy-loader. Multiple lazy-loaders can access the same data. + */ + +template +struct hb_data_wrapper_t +{ + static_assert (WheresData > 0, ""); + + Data * get_data () const + { return *(((Data **) (void *) this) - WheresData); } + + bool is_inert () const { return !get_data (); } + + template + Stored * call_create () const { return Subclass::create (get_data ()); } +}; +template <> +struct hb_data_wrapper_t +{ + bool is_inert () const { return false; } + + template + Stored * call_create () const { return Funcs::create (); } +}; + +template struct hb_non_void_t { typedef T1 value; }; +template struct hb_non_void_t { typedef T2 value; }; + +template +struct hb_lazy_loader_t : hb_data_wrapper_t +{ + typedef typename hb_non_void_t + >::value Funcs; + + void init0 () {} /* Init, when memory is already set to 0. No-op for us. */ + void init () { instance.set_relaxed (nullptr); } + void fini () { do_destroy (instance.get_acquire ()); init (); } + + void free_instance () + { + retry: + Stored *p = instance.get_acquire (); + if (unlikely (p && !cmpexch (p, nullptr))) + goto retry; + do_destroy (p); + } + + static void do_destroy (Stored *p) + { + if (p && p != const_cast (Funcs::get_null ())) + Funcs::destroy (p); + } + + const Returned * operator -> () const { return get (); } + template + const U & operator * () const { return *get (); } + explicit operator bool () const + { return get_stored () != Funcs::get_null (); } + template operator const C * () const { return get (); } + + Stored * get_stored () const + { + retry: + Stored *p = this->instance.get_acquire (); + if (unlikely (!p)) + { + if (unlikely (this->is_inert ())) + return const_cast (Funcs::get_null ()); + + p = this->template call_create (); + if (unlikely (!p)) + p = const_cast (Funcs::get_null ()); + + if (unlikely (!cmpexch (nullptr, p))) + { + do_destroy (p); + goto retry; + } + } + return p; + } + Stored * get_stored_relaxed () const + { + return this->instance.get_relaxed (); + } + + bool cmpexch (Stored *current, Stored *value) const + { + /* This function can only be safely called directly if no + * other thread is accessing. */ + return this->instance.cmpexch (current, value); + } + + const Returned * get () const { return Funcs::convert (get_stored ()); } + const Returned * get_relaxed () const { return Funcs::convert (get_stored_relaxed ()); } + Returned * get_unconst () const { return const_cast (Funcs::convert (get_stored ())); } + + /* To be possibly overloaded by subclasses. */ + static Returned* convert (Stored *p) { return p; } + + /* By default null/init/fini the object. */ + static const Stored* get_null () { return &Null (Stored); } + static Stored *create (Data *data) + { + Stored *p = (Stored *) hb_calloc (1, sizeof (Stored)); + if (likely (p)) + p = new (p) Stored (data); + return p; + } + static Stored *create () + { + Stored *p = (Stored *) hb_calloc (1, sizeof (Stored)); + if (likely (p)) + p = new (p) Stored (); + return p; + } + static void destroy (Stored *p) + { + p->~Stored (); + hb_free (p); + } + + private: + /* Must only have one pointer. */ + hb_atomic_ptr_t instance; +}; + +/* Specializations. */ + +template +struct hb_face_lazy_loader_t : hb_lazy_loader_t, + hb_face_t, WheresFace> {}; + +template +struct hb_table_lazy_loader_t : hb_lazy_loader_t, + hb_face_t, WheresFace, + hb_blob_t> +{ + static hb_blob_t *create (hb_face_t *face) + { + auto c = hb_sanitize_context_t (); + if (core) + c.set_num_glyphs (0); // So we don't recurse ad infinitum, or doesn't need num_glyphs + return c.reference_table (face); + } + static void destroy (hb_blob_t *p) { hb_blob_destroy (p); } + + static const hb_blob_t *get_null () + { return hb_blob_get_empty (); } + + static const T* convert (const hb_blob_t *blob) + { return blob->as (); } + + hb_blob_t* get_blob () const { return this->get_stored (); } +}; + +#define HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T(Type) \ + template \ + struct hb_##Type##_funcs_lazy_loader_t : hb_lazy_loader_t \ + { \ + static void destroy (hb_##Type##_funcs_t *p) \ + { hb_##Type##_funcs_destroy (p); } \ + static const hb_##Type##_funcs_t *get_null () \ + { return hb_##Type##_funcs_get_empty (); } \ + } + +HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T (font); +HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T (unicode); +HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T (draw); +HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T (paint); + +#undef HB_DEFINE_TYPE_FUNCS_LAZY_LOADER_T + + +#endif /* HB_MACHINERY_HH */ diff --git a/gfx/harfbuzz/src/hb-map.cc b/gfx/harfbuzz/src/hb-map.cc new file mode 100644 index 0000000000..5d67cd9a12 --- /dev/null +++ b/gfx/harfbuzz/src/hb-map.cc @@ -0,0 +1,419 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb-map.hh" + + +/** + * SECTION:hb-map + * @title: hb-map + * @short_description: Object representing integer to integer mapping + * @include: hb.h + * + * Map objects are integer-to-integer hash-maps. Currently they are + * not used in the HarfBuzz public API, but are provided for client's + * use if desired. + **/ + + +/** + * hb_map_create: + * + * Creates a new, initially empty map. + * + * Return value: (transfer full): The new #hb_map_t + * + * Since: 1.7.7 + **/ +hb_map_t * +hb_map_create () +{ + hb_map_t *map; + + if (!(map = hb_object_create ())) + return hb_map_get_empty (); + + return map; +} + +/** + * hb_map_get_empty: + * + * Fetches the singleton empty #hb_map_t. + * + * Return value: (transfer full): The empty #hb_map_t + * + * Since: 1.7.7 + **/ +hb_map_t * +hb_map_get_empty () +{ + return const_cast (&Null (hb_map_t)); +} + +/** + * hb_map_reference: (skip) + * @map: A map + * + * Increases the reference count on a map. + * + * Return value: (transfer full): The map + * + * Since: 1.7.7 + **/ +hb_map_t * +hb_map_reference (hb_map_t *map) +{ + return hb_object_reference (map); +} + +/** + * hb_map_destroy: (skip) + * @map: A map + * + * Decreases the reference count on a map. When + * the reference count reaches zero, the map is + * destroyed, freeing all memory. + * + * Since: 1.7.7 + **/ +void +hb_map_destroy (hb_map_t *map) +{ + if (!hb_object_destroy (map)) return; + + hb_free (map); +} + +/** + * hb_map_set_user_data: (skip) + * @map: A map + * @key: The user-data key to set + * @data: A pointer to the user data to set + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the specified map. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 1.7.7 + **/ +hb_bool_t +hb_map_set_user_data (hb_map_t *map, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (map, key, data, destroy, replace); +} + +/** + * hb_map_get_user_data: (skip) + * @map: A map + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified map. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 1.7.7 + **/ +void * +hb_map_get_user_data (const hb_map_t *map, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (map, key); +} + + +/** + * hb_map_allocation_successful: + * @map: A map + * + * Tests whether memory allocation for a set was successful. + * + * Return value: `true` if allocation succeeded, `false` otherwise + * + * Since: 1.7.7 + **/ +hb_bool_t +hb_map_allocation_successful (const hb_map_t *map) +{ + return map->successful; +} + +/** + * hb_map_copy: + * @map: A map + * + * Allocate a copy of @map. + * + * Return value: (transfer full): Newly-allocated map. + * + * Since: 4.4.0 + **/ +hb_map_t * +hb_map_copy (const hb_map_t *map) +{ + hb_map_t *copy = hb_map_create (); + if (unlikely (copy->in_error ())) + return hb_map_get_empty (); + + *copy = *map; + return copy; +} + +/** + * hb_map_set: + * @map: A map + * @key: The key to store in the map + * @value: The value to store for @key + * + * Stores @key:@value in the map. + * + * Since: 1.7.7 + **/ +void +hb_map_set (hb_map_t *map, + hb_codepoint_t key, + hb_codepoint_t value) +{ + /* Immutable-safe. */ + map->set (key, value); +} + +/** + * hb_map_get: + * @map: A map + * @key: The key to query + * + * Fetches the value stored for @key in @map. + * + * Since: 1.7.7 + **/ +hb_codepoint_t +hb_map_get (const hb_map_t *map, + hb_codepoint_t key) +{ + return map->get (key); +} + +/** + * hb_map_del: + * @map: A map + * @key: The key to delete + * + * Removes @key and its stored value from @map. + * + * Since: 1.7.7 + **/ +void +hb_map_del (hb_map_t *map, + hb_codepoint_t key) +{ + /* Immutable-safe. */ + map->del (key); +} + +/** + * hb_map_has: + * @map: A map + * @key: The key to query + * + * Tests whether @key is an element of @map. + * + * Return value: `true` if @key is found in @map, `false` otherwise + * + * Since: 1.7.7 + **/ +hb_bool_t +hb_map_has (const hb_map_t *map, + hb_codepoint_t key) +{ + return map->has (key); +} + + +/** + * hb_map_clear: + * @map: A map + * + * Clears out the contents of @map. + * + * Since: 1.7.7 + **/ +void +hb_map_clear (hb_map_t *map) +{ + return map->clear (); +} + +/** + * hb_map_is_empty: + * @map: A map + * + * Tests whether @map is empty (contains no elements). + * + * Return value: `true` if @map is empty + * + * Since: 1.7.7 + **/ +hb_bool_t +hb_map_is_empty (const hb_map_t *map) +{ + return map->is_empty (); +} + +/** + * hb_map_get_population: + * @map: A map + * + * Returns the number of key-value pairs in the map. + * + * Return value: The population of @map + * + * Since: 1.7.7 + **/ +unsigned int +hb_map_get_population (const hb_map_t *map) +{ + return map->get_population (); +} + +/** + * hb_map_is_equal: + * @map: A map + * @other: Another map + * + * Tests whether @map and @other are equal (contain the same + * elements). + * + * Return value: `true` if the two maps are equal, `false` otherwise. + * + * Since: 4.3.0 + **/ +hb_bool_t +hb_map_is_equal (const hb_map_t *map, + const hb_map_t *other) +{ + return map->is_equal (*other); +} + +/** + * hb_map_hash: + * @map: A map + * + * Creates a hash representing @map. + * + * Return value: + * A hash of @map. + * + * Since: 4.4.0 + **/ +unsigned int +hb_map_hash (const hb_map_t *map) +{ + return map->hash (); +} + +/** + * hb_map_update: + * @map: A map + * @other: Another map + * + * Add the contents of @other to @map. + * + * Since: 7.0.0 + **/ +HB_EXTERN void +hb_map_update (hb_map_t *map, + const hb_map_t *other) +{ + map->update (*other); +} + +/** + * hb_map_next: + * @map: A map + * @idx: (inout): Iterator internal state + * @key: (out): Key retrieved + * @value: (out): Value retrieved + * + * Fetches the next key/value paire in @map. + * + * Set @idx to -1 to get started. + * + * If the map is modified during iteration, the behavior is undefined. + * + * The order in which the key/values are returned is undefined. + * + * Return value: `true` if there was a next value, `false` otherwise + * + * Since: 7.0.0 + **/ +hb_bool_t +hb_map_next (const hb_map_t *map, + int *idx, + hb_codepoint_t *key, + hb_codepoint_t *value) +{ + return map->next (idx, key, value); +} + +/** + * hb_map_keys: + * @map: A map + * @keys: A set + * + * Add the keys of @map to @keys. + * + * Since: 7.0.0 + **/ +void +hb_map_keys (const hb_map_t *map, + hb_set_t *keys) +{ + hb_copy (map->keys() , *keys); +} + +/** + * hb_map_values: + * @map: A map + * @values: A set + * + * Add the values of @map to @values. + * + * Since: 7.0.0 + **/ +void +hb_map_values (const hb_map_t *map, + hb_set_t *values) +{ + hb_copy (map->values() , *values); +} diff --git a/gfx/harfbuzz/src/hb-map.h b/gfx/harfbuzz/src/hb-map.h new file mode 100644 index 0000000000..e928628fa7 --- /dev/null +++ b/gfx/harfbuzz/src/hb-map.h @@ -0,0 +1,143 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_MAP_H +#define HB_MAP_H + +#include "hb-common.h" +#include "hb-set.h" + +HB_BEGIN_DECLS + + +/** + * HB_MAP_VALUE_INVALID: + * + * Unset #hb_map_t value. + * + * Since: 1.7.7 + */ +#define HB_MAP_VALUE_INVALID ((hb_codepoint_t) -1) + +/** + * hb_map_t: + * + * Data type for holding integer-to-integer hash maps. + * + **/ +typedef struct hb_map_t hb_map_t; + + +HB_EXTERN hb_map_t * +hb_map_create (void); + +HB_EXTERN hb_map_t * +hb_map_get_empty (void); + +HB_EXTERN hb_map_t * +hb_map_reference (hb_map_t *map); + +HB_EXTERN void +hb_map_destroy (hb_map_t *map); + +HB_EXTERN hb_bool_t +hb_map_set_user_data (hb_map_t *map, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + +HB_EXTERN void * +hb_map_get_user_data (const hb_map_t *map, + hb_user_data_key_t *key); + + +/* Returns false if allocation has failed before */ +HB_EXTERN hb_bool_t +hb_map_allocation_successful (const hb_map_t *map); + +HB_EXTERN hb_map_t * +hb_map_copy (const hb_map_t *map); + +HB_EXTERN void +hb_map_clear (hb_map_t *map); + +HB_EXTERN hb_bool_t +hb_map_is_empty (const hb_map_t *map); + +HB_EXTERN unsigned int +hb_map_get_population (const hb_map_t *map); + +HB_EXTERN hb_bool_t +hb_map_is_equal (const hb_map_t *map, + const hb_map_t *other); + +HB_EXTERN unsigned int +hb_map_hash (const hb_map_t *map); + +HB_EXTERN void +hb_map_set (hb_map_t *map, + hb_codepoint_t key, + hb_codepoint_t value); + +HB_EXTERN hb_codepoint_t +hb_map_get (const hb_map_t *map, + hb_codepoint_t key); + +HB_EXTERN void +hb_map_del (hb_map_t *map, + hb_codepoint_t key); + +HB_EXTERN hb_bool_t +hb_map_has (const hb_map_t *map, + hb_codepoint_t key); + +HB_EXTERN void +hb_map_update (hb_map_t *map, + const hb_map_t *other); + +/* Pass -1 in for idx to get started. */ +HB_EXTERN hb_bool_t +hb_map_next (const hb_map_t *map, + int *idx, + hb_codepoint_t *key, + hb_codepoint_t *value); + +HB_EXTERN void +hb_map_keys (const hb_map_t *map, + hb_set_t *keys); + +HB_EXTERN void +hb_map_values (const hb_map_t *map, + hb_set_t *values); + +HB_END_DECLS + +#endif /* HB_MAP_H */ diff --git a/gfx/harfbuzz/src/hb-map.hh b/gfx/harfbuzz/src/hb-map.hh new file mode 100644 index 0000000000..c685a9a3e1 --- /dev/null +++ b/gfx/harfbuzz/src/hb-map.hh @@ -0,0 +1,491 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_MAP_HH +#define HB_MAP_HH + +#include "hb.hh" + +#include "hb-set.hh" + + +/* + * hb_hashmap_t + */ + +extern HB_INTERNAL const hb_codepoint_t minus_1; + +template +struct hb_hashmap_t +{ + hb_hashmap_t () { init (); } + ~hb_hashmap_t () { fini (); } + + hb_hashmap_t (const hb_hashmap_t& o) : hb_hashmap_t () { resize (o.population); hb_copy (o, *this); } + hb_hashmap_t (hb_hashmap_t&& o) : hb_hashmap_t () { hb_swap (*this, o); } + hb_hashmap_t& operator= (const hb_hashmap_t& o) { reset (); resize (o.population); hb_copy (o, *this); return *this; } + hb_hashmap_t& operator= (hb_hashmap_t&& o) { hb_swap (*this, o); return *this; } + + hb_hashmap_t (std::initializer_list> lst) : hb_hashmap_t () + { + for (auto&& item : lst) + set (item.first, item.second); + } + template + hb_hashmap_t (const Iterable &o) : hb_hashmap_t () + { + auto iter = hb_iter (o); + if (iter.is_random_access_iterator) + resize (hb_len (iter)); + hb_copy (iter, *this); + } + + struct item_t + { + K key; + uint32_t hash : 30; + uint32_t is_used_ : 1; + uint32_t is_tombstone_ : 1; + V value; + + item_t () : key (), + hash (0), + is_used_ (false), is_tombstone_ (false), + value () {} + + bool is_used () const { return is_used_; } + void set_used (bool is_used) { is_used_ = is_used; } + bool is_tombstone () const { return is_tombstone_; } + void set_tombstone (bool is_tombstone) { is_tombstone_ = is_tombstone; } + bool is_real () const { return is_used_ && !is_tombstone_; } + + template + static inline const V& default_value () { return Null(V); }; + template + static inline const V& default_value () + { + static_assert (hb_is_same (V, hb_codepoint_t), ""); + return minus_1; + }; + + bool operator == (const K &o) const { return hb_deref (key) == hb_deref (o); } + bool operator == (const item_t &o) const { return *this == o.key; } + hb_pair_t get_pair() const { return hb_pair_t (key, value); } + hb_pair_t get_pair_ref() const { return hb_pair_t (key, value); } + + uint32_t total_hash () const + { return (hash * 31) + hb_hash (value); } + }; + + hb_object_header_t header; + unsigned int successful : 1; /* Allocations successful */ + unsigned int population : 31; /* Not including tombstones. */ + unsigned int occupancy; /* Including tombstones. */ + unsigned int mask; + unsigned int prime; + item_t *items; + + friend void swap (hb_hashmap_t& a, hb_hashmap_t& b) + { + if (unlikely (!a.successful || !b.successful)) + return; + unsigned tmp = a.population; + a.population = b.population; + b.population = tmp; + //hb_swap (a.population, b.population); + hb_swap (a.occupancy, b.occupancy); + hb_swap (a.mask, b.mask); + hb_swap (a.prime, b.prime); + hb_swap (a.items, b.items); + } + void init () + { + hb_object_init (this); + + successful = true; + population = occupancy = 0; + mask = 0; + prime = 0; + items = nullptr; + } + void fini () + { + hb_object_fini (this); + + if (likely (items)) { + unsigned size = mask + 1; + for (unsigned i = 0; i < size; i++) + items[i].~item_t (); + hb_free (items); + items = nullptr; + } + population = occupancy = 0; + } + + void reset () + { + successful = true; + clear (); + } + + bool in_error () const { return !successful; } + + bool resize (unsigned new_population = 0) + { + if (unlikely (!successful)) return false; + + if (new_population != 0 && (new_population + new_population / 2) < mask) return true; + + unsigned int power = hb_bit_storage (hb_max ((unsigned) population, new_population) * 2 + 8); + unsigned int new_size = 1u << power; + item_t *new_items = (item_t *) hb_malloc ((size_t) new_size * sizeof (item_t)); + if (unlikely (!new_items)) + { + successful = false; + return false; + } + for (auto &_ : hb_iter (new_items, new_size)) + new (&_) item_t (); + + unsigned int old_size = size (); + item_t *old_items = items; + + /* Switch to new, empty, array. */ + population = occupancy = 0; + mask = new_size - 1; + prime = prime_for (power); + items = new_items; + + /* Insert back old items. */ + for (unsigned int i = 0; i < old_size; i++) + { + if (old_items[i].is_real ()) + { + set_with_hash (std::move (old_items[i].key), + old_items[i].hash, + std::move (old_items[i].value)); + } + old_items[i].~item_t (); + } + + hb_free (old_items); + + return true; + } + + template + bool set_with_hash (KK&& key, uint32_t hash, VV&& value, bool is_delete=false) + { + if (unlikely (!successful)) return false; + if (unlikely ((occupancy + occupancy / 2) >= mask && !resize ())) return false; + item_t &item = item_for_hash (key, hash); + + if (is_delete && !(item == key)) + return true; /* Trying to delete non-existent key. */ + + if (item.is_used ()) + { + occupancy--; + if (!item.is_tombstone ()) + population--; + } + + item.key = std::forward (key); + item.value = std::forward (value); + item.hash = hash; + item.set_used (true); + item.set_tombstone (is_delete); + + occupancy++; + if (!is_delete) + population++; + + return true; + } + + template + bool set (const K &key, VV&& value) { return set_with_hash (key, hb_hash (key), std::forward (value)); } + template + bool set (K &&key, VV&& value) { return set_with_hash (std::move (key), hb_hash (key), std::forward (value)); } + + const V& get_with_hash (const K &key, uint32_t hash) const + { + if (unlikely (!items)) return item_t::default_value (); + auto &item = item_for_hash (key, hash); + return item.is_real () && item == key ? item.value : item_t::default_value (); + } + const V& get (const K &key) const + { + if (unlikely (!items)) return item_t::default_value (); + return get_with_hash (key, hb_hash (key)); + } + + void del (const K &key) { set_with_hash (key, hb_hash (key), item_t::default_value (), true); } + + /* Has interface. */ + const V& operator [] (K k) const { return get (k); } + template + bool has (K key, VV **vp = nullptr) const + { + if (unlikely (!items)) + return false; + auto &item = item_for_hash (key, hb_hash (key)); + if (item.is_real () && item == key) + { + if (vp) *vp = std::addressof (item.value); + return true; + } + else + return false; + } + /* Projection. */ + V operator () (K k) const { return get (k); } + + unsigned size () const { return mask ? mask + 1 : 0; } + + void clear () + { + if (unlikely (!successful)) return; + + for (auto &_ : hb_iter (items, size ())) + { + /* Reconstruct items. */ + _.~item_t (); + new (&_) item_t (); + } + + population = occupancy = 0; + } + + bool is_empty () const { return population == 0; } + explicit operator bool () const { return !is_empty (); } + + uint32_t hash () const + { + return + + iter_items () + | hb_reduce ([] (uint32_t h, const item_t &_) { return h ^ _.total_hash (); }, (uint32_t) 0u) + ; + } + + bool is_equal (const hb_hashmap_t &other) const + { + if (population != other.population) return false; + + for (auto pair : iter ()) + if (other.get (pair.first) != pair.second) + return false; + + return true; + } + bool operator == (const hb_hashmap_t &other) const { return is_equal (other); } + bool operator != (const hb_hashmap_t &other) const { return !is_equal (other); } + + unsigned int get_population () const { return population; } + + void update (const hb_hashmap_t &other) + { + if (unlikely (!successful)) return; + + hb_copy (other, *this); + } + + /* + * Iterator + */ + + auto iter_items () const HB_AUTO_RETURN + ( + + hb_iter (items, size ()) + | hb_filter (&item_t::is_real) + ) + auto iter_ref () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::get_pair_ref) + ) + auto iter () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::get_pair) + ) + auto keys_ref () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::key) + ) + auto keys () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::key) + | hb_map (hb_ridentity) + ) + auto values_ref () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::value) + ) + auto values () const HB_AUTO_RETURN + ( + + iter_items () + | hb_map (&item_t::value) + | hb_map (hb_ridentity) + ) + + /* C iterator. */ + bool next (int *idx, + K *key, + V *value) const + { + unsigned i = (unsigned) (*idx + 1); + + unsigned count = size (); + while (i < count && !items[i].is_real ()) + i++; + + if (i >= count) + { + *idx = -1; + return false; + } + + *key = items[i].key; + *value = items[i].value; + + *idx = (signed) i; + return true; + } + + /* Sink interface. */ + hb_hashmap_t& operator << (const hb_pair_t& v) + { set (v.first, v.second); return *this; } + hb_hashmap_t& operator << (const hb_pair_t& v) + { set (v.first, std::move (v.second)); return *this; } + hb_hashmap_t& operator << (const hb_pair_t& v) + { set (std::move (v.first), v.second); return *this; } + hb_hashmap_t& operator << (const hb_pair_t& v) + { set (std::move (v.first), std::move (v.second)); return *this; } + + item_t& item_for_hash (const K &key, uint32_t hash) const + { + hash &= 0x3FFFFFFF; // We only store lower 30bit of hash + unsigned int i = hash % prime; + unsigned int step = 0; + unsigned int tombstone = (unsigned) -1; + while (items[i].is_used ()) + { + if ((hb_is_same (K, hb_codepoint_t) || items[i].hash == hash) && + items[i] == key) + return items[i]; + if (tombstone == (unsigned) -1 && items[i].is_tombstone ()) + tombstone = i; + i = (i + ++step) & mask; + } + return items[tombstone == (unsigned) -1 ? i : tombstone]; + } + + static unsigned int prime_for (unsigned int shift) + { + /* Following comment and table copied from glib. */ + /* Each table size has an associated prime modulo (the first prime + * lower than the table size) used to find the initial bucket. Probing + * then works modulo 2^n. The prime modulo is necessary to get a + * good distribution with poor hash functions. + */ + /* Not declaring static to make all kinds of compilers happy... */ + /*static*/ const unsigned int prime_mod [32] = + { + 1, /* For 1 << 0 */ + 2, + 3, + 7, + 13, + 31, + 61, + 127, + 251, + 509, + 1021, + 2039, + 4093, + 8191, + 16381, + 32749, + 65521, /* For 1 << 16 */ + 131071, + 262139, + 524287, + 1048573, + 2097143, + 4194301, + 8388593, + 16777213, + 33554393, + 67108859, + 134217689, + 268435399, + 536870909, + 1073741789, + 2147483647 /* For 1 << 31 */ + }; + + if (unlikely (shift >= ARRAY_LENGTH (prime_mod))) + return prime_mod[ARRAY_LENGTH (prime_mod) - 1]; + + return prime_mod[shift]; + } +}; + +/* + * hb_map_t + */ + +struct hb_map_t : hb_hashmap_t +{ + using hashmap = hb_hashmap_t; + + ~hb_map_t () = default; + hb_map_t () : hashmap () {} + hb_map_t (const hb_map_t &o) : hashmap ((hashmap &) o) {} + hb_map_t (hb_map_t &&o) : hashmap (std::move ((hashmap &) o)) {} + hb_map_t& operator= (const hb_map_t&) = default; + hb_map_t& operator= (hb_map_t&&) = default; + hb_map_t (std::initializer_list> lst) : hashmap (lst) {} + template + hb_map_t (const Iterable &o) : hashmap (o) {} +}; + + +#endif /* HB_MAP_HH */ diff --git a/gfx/harfbuzz/src/hb-meta.hh b/gfx/harfbuzz/src/hb-meta.hh new file mode 100644 index 0000000000..31aa7fa6f1 --- /dev/null +++ b/gfx/harfbuzz/src/hb-meta.hh @@ -0,0 +1,238 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_META_HH +#define HB_META_HH + +#include "hb.hh" + +#include +#include +#include + + +/* + * C++ template meta-programming & fundamentals used with them. + */ + +/* Void! For when we need a expression-type of void. */ +struct hb_empty_t {}; + +/* https://en.cppreference.com/w/cpp/types/void_t */ +template struct _hb_void_t { typedef void type; }; +template using hb_void_t = typename _hb_void_t::type; + +template struct _hb_head_t { typedef Head type; }; +template using hb_head_t = typename _hb_head_t::type; + +template struct hb_integral_constant { static constexpr T value = v; }; +template using hb_bool_constant = hb_integral_constant; +using hb_true_type = hb_bool_constant; +using hb_false_type = hb_bool_constant; + +/* Static-assert as expression. */ +template struct static_assert_expr; +template <> struct static_assert_expr : hb_false_type {}; +#define static_assert_expr(C) static_assert_expr::value + +/* Basic type SFINAE. */ + +template struct hb_enable_if {}; +template struct hb_enable_if { typedef T type; }; +#define hb_enable_if(Cond) typename hb_enable_if<(Cond)>::type* = nullptr +/* Concepts/Requires alias: */ +#define hb_requires(Cond) hb_enable_if((Cond)) + +template struct hb_is_same : hb_false_type {}; +template struct hb_is_same : hb_true_type {}; +#define hb_is_same(T, T2) hb_is_same::value + +/* Function overloading SFINAE and priority. */ + +#define HB_RETURN(Ret, E) -> hb_head_t { return (E); } +#define HB_AUTO_RETURN(E) -> decltype ((E)) { return (E); } +#define HB_VOID_RETURN(E) -> hb_void_t { (E); } + +template struct hb_priority : hb_priority {}; +template <> struct hb_priority<0> {}; +#define hb_prioritize hb_priority<16> () + +#define HB_FUNCOBJ(x) static_const x HB_UNUSED + + +template struct hb_type_identity_t { typedef T type; }; +template using hb_type_identity = typename hb_type_identity_t::type; + +template static inline T hb_declval (); +#define hb_declval(T) (hb_declval ()) + +template struct hb_match_const : hb_type_identity_t, hb_false_type {}; +template struct hb_match_const : hb_type_identity_t, hb_true_type {}; +template using hb_remove_const = typename hb_match_const::type; + +template struct hb_match_reference : hb_type_identity_t, hb_false_type {}; +template struct hb_match_reference : hb_type_identity_t, hb_true_type {}; +template struct hb_match_reference : hb_type_identity_t, hb_true_type {}; +template using hb_remove_reference = typename hb_match_reference::type; +template auto _hb_try_add_lvalue_reference (hb_priority<1>) -> hb_type_identity; +template auto _hb_try_add_lvalue_reference (hb_priority<0>) -> hb_type_identity; +template using hb_add_lvalue_reference = decltype (_hb_try_add_lvalue_reference (hb_prioritize)); +template auto _hb_try_add_rvalue_reference (hb_priority<1>) -> hb_type_identity; +template auto _hb_try_add_rvalue_reference (hb_priority<0>) -> hb_type_identity; +template using hb_add_rvalue_reference = decltype (_hb_try_add_rvalue_reference (hb_prioritize)); + +template struct hb_match_pointer : hb_type_identity_t, hb_false_type {}; +template struct hb_match_pointer : hb_type_identity_t, hb_true_type {}; +template using hb_remove_pointer = typename hb_match_pointer::type; +template auto _hb_try_add_pointer (hb_priority<1>) -> hb_type_identity*>; +template auto _hb_try_add_pointer (hb_priority<1>) -> hb_type_identity; +template using hb_add_pointer = decltype (_hb_try_add_pointer (hb_prioritize)); + + +template using hb_decay = typename std::decay::type; + +#define hb_is_convertible(From,To) std::is_convertible::value + +template +using hb_is_cr_convertible = hb_bool_constant< + hb_is_same (hb_decay, hb_decay) && + (!std::is_const::value || std::is_const::value) && + (!std::is_reference::value || std::is_const::value || std::is_reference::value) +>; +#define hb_is_cr_convertible(From,To) hb_is_cr_convertible::value + + +struct +{ + template constexpr auto + operator () (T&& v) const HB_AUTO_RETURN (std::forward (v)) + + template constexpr auto + operator () (T *v) const HB_AUTO_RETURN (*v) + + template constexpr auto + operator () (const hb::shared_ptr& v) const HB_AUTO_RETURN (*v) + + template constexpr auto + operator () (hb::shared_ptr& v) const HB_AUTO_RETURN (*v) + + template constexpr auto + operator () (const hb::unique_ptr& v) const HB_AUTO_RETURN (*v) + + template constexpr auto + operator () (hb::unique_ptr& v) const HB_AUTO_RETURN (*v) +} +HB_FUNCOBJ (hb_deref); + +template +struct hb_reference_wrapper +{ + hb_reference_wrapper (T v) : v (v) {} + bool operator == (const hb_reference_wrapper& o) const { return v == o.v; } + bool operator != (const hb_reference_wrapper& o) const { return v != o.v; } + operator T () const { return v; } + T get () const { return v; } + T v; +}; +template +struct hb_reference_wrapper +{ + hb_reference_wrapper (T& v) : v (std::addressof (v)) {} + bool operator == (const hb_reference_wrapper& o) const { return v == o.v; } + bool operator != (const hb_reference_wrapper& o) const { return v != o.v; } + operator T& () const { return *v; } + T& get () const { return *v; } + T* v; +}; + + +/* Type traits */ + +template struct hb_int_min; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template <> struct hb_int_min : hb_integral_constant {}; +template struct hb_int_min : hb_integral_constant {}; +#define hb_int_min(T) hb_int_min::value +template struct hb_int_max; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +template <> struct hb_int_max : hb_integral_constant {}; +#define hb_int_max(T) hb_int_max::value + +#if defined(__GNUC__) && __GNUC__ < 5 && !defined(__clang__) +#define hb_is_trivially_copyable(T) __has_trivial_copy(T) +#define hb_is_trivially_copy_assignable(T) __has_trivial_assign(T) +#define hb_is_trivially_constructible(T) __has_trivial_constructor(T) +#define hb_is_trivially_copy_constructible(T) __has_trivial_copy_constructor(T) +#define hb_is_trivially_destructible(T) __has_trivial_destructor(T) +#else +#define hb_is_trivially_copyable(T) std::is_trivially_copyable::value +#define hb_is_trivially_copy_assignable(T) std::is_trivially_copy_assignable::value +#define hb_is_trivially_constructible(T) std::is_trivially_constructible::value +#define hb_is_trivially_copy_constructible(T) std::is_trivially_copy_constructible::value +#define hb_is_trivially_destructible(T) std::is_trivially_destructible::value +#endif + +/* Class traits. */ + +#define HB_DELETE_COPY_ASSIGN(TypeName) \ + TypeName(const TypeName&) = delete; \ + void operator=(const TypeName&) = delete +#define HB_DELETE_CREATE_COPY_ASSIGN(TypeName) \ + TypeName() = delete; \ + TypeName(const TypeName&) = delete; \ + void operator=(const TypeName&) = delete + +/* hb_unwrap_type (T) + * If T has no T::type, returns T. Otherwise calls itself on T::type recursively. + */ + +template +struct _hb_unwrap_type : hb_type_identity_t {}; +template +struct _hb_unwrap_type> : _hb_unwrap_type {}; +template +using hb_unwrap_type = _hb_unwrap_type; +#define hb_unwrap_type(T) typename hb_unwrap_type::type + +#endif /* HB_META_HH */ diff --git a/gfx/harfbuzz/src/hb-ms-feature-ranges.hh b/gfx/harfbuzz/src/hb-ms-feature-ranges.hh new file mode 100644 index 0000000000..f7649ab76e --- /dev/null +++ b/gfx/harfbuzz/src/hb-ms-feature-ranges.hh @@ -0,0 +1,232 @@ +/* + * Copyright © 2011,2012,2013 Google, Inc. + * Copyright © 2021 Khaled Hosny + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_MS_FEATURE_RANGES_HH +#define HB_MS_FEATURE_RANGES_HH + +#include "hb.hh" + +/* Variations of this code exist in hb-coretext.cc as well + * as hb-aat-map.cc... */ + +typedef struct hb_ms_feature_t { + uint32_t tag_le; + uint32_t value; +} hb_ms_feature_t; + +typedef struct hb_ms_features_t { + hb_ms_feature_t *features; + uint32_t num_features; +} hb_ms_features_t; + +struct hb_ms_active_feature_t { + hb_ms_feature_t fea; + unsigned int order; + + HB_INTERNAL static int cmp (const void *pa, const void *pb) { + const auto *a = (const hb_ms_active_feature_t *) pa; + const auto *b = (const hb_ms_active_feature_t *) pb; + return a->fea.tag_le < b->fea.tag_le ? -1 : a->fea.tag_le > b->fea.tag_le ? 1 : + a->order < b->order ? -1 : a->order > b->order ? 1 : + a->fea.value < b->fea.value ? -1 : a->fea.value > b->fea.value ? 1 : + 0; + } + bool operator== (const hb_ms_active_feature_t& f) const + { return cmp (this, &f) == 0; } +}; + +struct hb_ms_feature_event_t { + unsigned int index; + bool start; + hb_ms_active_feature_t feature; + + HB_INTERNAL static int cmp (const void *pa, const void *pb) + { + const auto *a = (const hb_ms_feature_event_t *) pa; + const auto *b = (const hb_ms_feature_event_t *) pb; + return a->index < b->index ? -1 : a->index > b->index ? 1 : + a->start < b->start ? -1 : a->start > b->start ? 1 : + hb_ms_active_feature_t::cmp (&a->feature, &b->feature); + } +}; + +struct hb_ms_range_record_t { + hb_ms_features_t features; + unsigned int index_first; /* == start */ + unsigned int index_last; /* == end - 1 */ +}; + +static inline bool +hb_ms_setup_features (const hb_feature_t *features, + unsigned int num_features, + hb_vector_t &feature_records, /* OUT */ + hb_vector_t &range_records /* OUT */) +{ + feature_records.shrink(0); + range_records.shrink(0); + + /* Sort features by start/end events. */ + hb_vector_t feature_events; + for (unsigned int i = 0; i < num_features; i++) + { + hb_ms_active_feature_t feature; + feature.fea.tag_le = hb_uint32_swap (features[i].tag); + feature.fea.value = features[i].value; + feature.order = i; + + hb_ms_feature_event_t *event; + + event = feature_events.push (); + event->index = features[i].start; + event->start = true; + event->feature = feature; + + event = feature_events.push (); + event->index = features[i].end; + event->start = false; + event->feature = feature; + } + feature_events.qsort (); + /* Add a strategic final event. */ + { + hb_ms_active_feature_t feature; + feature.fea.tag_le = 0; + feature.fea.value = 0; + feature.order = num_features + 1; + + auto *event = feature_events.push (); + event->index = 0; /* This value does magic. */ + event->start = false; + event->feature = feature; + } + + /* Scan events and save features for each range. */ + hb_vector_t active_features; + unsigned int last_index = 0; + for (unsigned int i = 0; i < feature_events.length; i++) + { + auto *event = &feature_events[i]; + + if (event->index != last_index) + { + /* Save a snapshot of active features and the range. */ + auto *range = range_records.push (); + auto offset = feature_records.length; + + active_features.qsort (); + for (unsigned int j = 0; j < active_features.length; j++) + { + if (!j || active_features[j].fea.tag_le != feature_records[feature_records.length - 1].tag_le) + { + feature_records.push (active_features[j].fea); + } + else + { + /* Overrides value for existing feature. */ + feature_records[feature_records.length - 1].value = active_features[j].fea.value; + } + } + + /* Will convert to pointer after all is ready, since feature_records.array + * may move as we grow it. */ + range->features.features = reinterpret_cast (offset); + range->features.num_features = feature_records.length - offset; + range->index_first = last_index; + range->index_last = event->index - 1; + + last_index = event->index; + } + + if (event->start) + { + active_features.push (event->feature); + } + else + { + auto *feature = active_features.lsearch (event->feature); + if (feature) + active_features.remove_ordered (feature - active_features.arrayZ); + } + } + + if (!range_records.length) /* No active feature found. */ + num_features = 0; + + /* Fixup the pointers. */ + for (unsigned int i = 0; i < range_records.length; i++) + { + auto *range = &range_records[i]; + range->features.features = (hb_ms_feature_t *) feature_records + reinterpret_cast (range->features.features); + } + + return !!num_features; +} + +static inline void +hb_ms_make_feature_ranges (hb_vector_t &feature_records, + hb_vector_t &range_records, + unsigned int chars_offset, + unsigned int chars_len, + uint16_t *log_clusters, + hb_vector_t &range_features, /* OUT */ + hb_vector_t &range_counts /* OUT */) +{ + range_features.shrink (0); + range_counts.shrink (0); + + auto *last_range = &range_records[0]; + for (unsigned int i = chars_offset; i < chars_len; i++) + { + auto *range = last_range; + while (log_clusters[i] < range->index_first) + range--; + while (log_clusters[i] > range->index_last) + range++; + if (!range_features.length || + &range->features != range_features[range_features.length - 1]) + { + auto **features = range_features.push (); + auto *c = range_counts.push (); + if (unlikely (!features || !c)) + { + range_features.shrink (0); + range_counts.shrink (0); + break; + } + *features = &range->features; + *c = 1; + } + else + { + range_counts[range_counts.length - 1]++; + } + + last_range = range; + } +} + +#endif /* HB_MS_FEATURE_RANGES_HH */ diff --git a/gfx/harfbuzz/src/hb-multimap.hh b/gfx/harfbuzz/src/hb-multimap.hh new file mode 100644 index 0000000000..b4a8cc62a3 --- /dev/null +++ b/gfx/harfbuzz/src/hb-multimap.hh @@ -0,0 +1,92 @@ +/* + * Copyright © 2022 Behdad Esfahbod + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_MULTIMAP_HH +#define HB_MULTIMAP_HH + +#include "hb.hh" +#include "hb-map.hh" +#include "hb-vector.hh" + + +/* + * hb_multimap_t + */ + +struct hb_multimap_t +{ + void add (hb_codepoint_t k, hb_codepoint_t v) + { + hb_codepoint_t *i; + if (multiples_indices.has (k, &i)) + { + multiples_values[*i].push (v); + return; + } + + hb_codepoint_t *old_v; + if (singulars.has (k, &old_v)) + { + hb_codepoint_t old = *old_v; + singulars.del (k); + + multiples_indices.set (k, multiples_values.length); + auto *vec = multiples_values.push (); + + vec->push (old); + vec->push (v); + + return; + } + + singulars.set (k, v); + } + + hb_array_t get (hb_codepoint_t k) const + { + const hb_codepoint_t *v; + if (singulars.has (k, &v)) + return hb_array (v, 1); + + hb_codepoint_t *i; + if (multiples_indices.has (k, &i)) + return multiples_values[*i].as_array (); + + return hb_array_t (); + } + + bool in_error () const + { + return singulars.in_error () || multiples_indices.in_error () || multiples_values.in_error (); + } + + protected: + hb_map_t singulars; + hb_map_t multiples_indices; + hb_vector_t> multiples_values; +}; + + + +#endif /* HB_MULTIMAP_HH */ diff --git a/gfx/harfbuzz/src/hb-mutex.hh b/gfx/harfbuzz/src/hb-mutex.hh new file mode 100644 index 0000000000..e329d9864f --- /dev/null +++ b/gfx/harfbuzz/src/hb-mutex.hh @@ -0,0 +1,122 @@ +/* + * Copyright © 2007 Chris Wilson + * Copyright © 2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Contributor(s): + * Chris Wilson + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_MUTEX_HH +#define HB_MUTEX_HH + +#include "hb.hh" + + +/* mutex */ + +/* We need external help for these */ + +#if defined(hb_mutex_impl_init) \ + && defined(hb_mutex_impl_lock) \ + && defined(hb_mutex_impl_unlock) \ + && defined(hb_mutex_impl_finish) + +/* Defined externally, i.e. in config.h; must have typedef'ed hb_mutex_impl_t as well. */ + + +#elif !defined(HB_NO_MT) && !defined(HB_MUTEX_IMPL_STD_MUTEX) && (defined(HAVE_PTHREAD) || defined(__APPLE__)) + +#include +typedef pthread_mutex_t hb_mutex_impl_t; +#define hb_mutex_impl_init(M) pthread_mutex_init (M, nullptr) +#define hb_mutex_impl_lock(M) pthread_mutex_lock (M) +#define hb_mutex_impl_unlock(M) pthread_mutex_unlock (M) +#define hb_mutex_impl_finish(M) pthread_mutex_destroy (M) + + +#elif !defined(HB_NO_MT) && !defined(HB_MUTEX_IMPL_STD_MUTEX) && defined(_WIN32) + +typedef CRITICAL_SECTION hb_mutex_impl_t; +#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) +#define hb_mutex_impl_init(M) InitializeCriticalSectionEx (M, 0, 0) +#else +#define hb_mutex_impl_init(M) InitializeCriticalSection (M) +#endif +#define hb_mutex_impl_lock(M) EnterCriticalSection (M) +#define hb_mutex_impl_unlock(M) LeaveCriticalSection (M) +#define hb_mutex_impl_finish(M) DeleteCriticalSection (M) + + +#elif !defined(HB_NO_MT) + +#include +typedef std::mutex hb_mutex_impl_t; +#define hb_mutex_impl_init(M) HB_STMT_START { new (M) hb_mutex_impl_t; } HB_STMT_END +#define hb_mutex_impl_lock(M) (M)->lock () +#define hb_mutex_impl_unlock(M) (M)->unlock () +#define hb_mutex_impl_finish(M) HB_STMT_START { (M)->~hb_mutex_impl_t(); } HB_STMT_END + + +#else /* defined(HB_NO_MT) */ + +typedef int hb_mutex_impl_t; +#define hb_mutex_impl_init(M) HB_STMT_START {} HB_STMT_END +#define hb_mutex_impl_lock(M) HB_STMT_START {} HB_STMT_END +#define hb_mutex_impl_unlock(M) HB_STMT_START {} HB_STMT_END +#define hb_mutex_impl_finish(M) HB_STMT_START {} HB_STMT_END + + +#endif + + +struct hb_mutex_t +{ + /* Create space for, but do not initialize m. */ + alignas(hb_mutex_impl_t) char m[sizeof (hb_mutex_impl_t)]; + + hb_mutex_t () { init (); } + ~hb_mutex_t () { fini (); } + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + void init () { hb_mutex_impl_init ((hb_mutex_impl_t *) m); } + void lock () { hb_mutex_impl_lock ((hb_mutex_impl_t *) m); } + void unlock () { hb_mutex_impl_unlock ((hb_mutex_impl_t *) m); } + void fini () { hb_mutex_impl_finish ((hb_mutex_impl_t *) m); } +#pragma GCC diagnostic pop +}; + +struct hb_lock_t +{ + hb_lock_t (hb_mutex_t &mutex_) : mutex (&mutex_) { mutex->lock (); } + hb_lock_t (hb_mutex_t *mutex_) : mutex (mutex_) { if (mutex) mutex->lock (); } + ~hb_lock_t () { if (mutex) mutex->unlock (); } + private: + hb_mutex_t *mutex; +}; + + +#endif /* HB_MUTEX_HH */ diff --git a/gfx/harfbuzz/src/hb-null.hh b/gfx/harfbuzz/src/hb-null.hh new file mode 100644 index 0000000000..3da2d75ef5 --- /dev/null +++ b/gfx/harfbuzz/src/hb-null.hh @@ -0,0 +1,226 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_NULL_HH +#define HB_NULL_HH + +#include "hb.hh" +#include "hb-meta.hh" + + +/* + * Static pools + */ + +/* Global nul-content Null pool. Enlarge as necessary. */ + +#define HB_NULL_POOL_SIZE 520 + +template +struct _hb_has_min_size : hb_false_type {}; +template +struct _hb_has_min_size> + : hb_true_type {}; +template +using hb_has_min_size = _hb_has_min_size; +#define hb_has_min_size(T) hb_has_min_size::value + +template +struct _hb_has_null_size : hb_false_type {}; +template +struct _hb_has_null_size> + : hb_true_type {}; +template +using hb_has_null_size = _hb_has_null_size; +#define hb_has_null_size(T) hb_has_null_size::value + +/* Use SFINAE to sniff whether T has min_size; in which case return the larger + * of sizeof(T) and T::null_size, otherwise return sizeof(T). + * + * The main purpose of this is to let structs communicate that they are not nullable, + * by defining min_size but *not* null_size. */ + +/* The hard way... + * https://stackoverflow.com/questions/7776448/sfinae-tried-with-bool-gives-compiler-error-template-argument-tvalue-invol + */ + +template +struct _hb_null_size : hb_integral_constant {}; +template +struct _hb_null_size> + : hb_integral_constant T::null_size ? sizeof (T) : T::null_size)> {}; +template +using hb_null_size = _hb_null_size; +#define hb_null_size(T) hb_null_size::value + +/* These doesn't belong here, but since is copy/paste from above, put it here. */ + +/* hb_static_size (T) + * Returns T::static_size if T::min_size is defined, or sizeof (T) otherwise. */ + +template +struct _hb_static_size : hb_integral_constant {}; +template +struct _hb_static_size> : hb_integral_constant {}; +template +using hb_static_size = _hb_static_size; +#define hb_static_size(T) hb_static_size::value + +template +struct _hb_min_size : hb_integral_constant {}; +template +struct _hb_min_size> : hb_integral_constant {}; +template +using hb_min_size = _hb_min_size; +#define hb_min_size(T) hb_min_size::value + + +/* + * Null() + */ + +extern HB_INTERNAL +uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)]; + +/* Generic nul-content Null objects. */ +template +struct Null { + static Type const & get_null () + { + static_assert (hb_null_size (Type) <= HB_NULL_POOL_SIZE, "Increase HB_NULL_POOL_SIZE."); + return *reinterpret_cast (_hb_NullPool); + } +}; +template +struct NullHelper +{ + typedef hb_remove_const> Type; + static const Type & get_null () { return Null::get_null (); } +}; +#define Null(Type) NullHelper::get_null () + +/* Specializations for arbitrary-content Null objects expressed in bytes. */ +#define DECLARE_NULL_NAMESPACE_BYTES(Namespace, Type) \ + } /* Close namespace. */ \ + extern HB_INTERNAL const unsigned char _hb_Null_##Namespace##_##Type[hb_null_size (Namespace::Type)]; \ + template <> \ + struct Null { \ + static Namespace::Type const & get_null () { \ + return *reinterpret_cast (_hb_Null_##Namespace##_##Type); \ + } \ + }; \ + namespace Namespace { \ + static_assert (true, "") /* Require semicolon after. */ +#define DECLARE_NULL_NAMESPACE_BYTES_TEMPLATE1(Namespace, Type, Size) \ + } /* Close namespace. */ \ + extern HB_INTERNAL const unsigned char _hb_Null_##Namespace##_##Type[Size]; \ + template \ + struct Null> { \ + static Namespace::Type const & get_null () { \ + return *reinterpret_cast *> (_hb_Null_##Namespace##_##Type); \ + } \ + }; \ + namespace Namespace { \ + static_assert (true, "") /* Require semicolon after. */ +#define DEFINE_NULL_NAMESPACE_BYTES(Namespace, Type) \ + const unsigned char _hb_Null_##Namespace##_##Type[sizeof (_hb_Null_##Namespace##_##Type)] + +/* Specializations for arbitrary-content Null objects expressed as struct initializer. */ +#define DECLARE_NULL_INSTANCE(Type) \ + extern HB_INTERNAL const Type _hb_Null_##Type; \ + template <> \ + struct Null { \ + static Type const & get_null () { \ + return _hb_Null_##Type; \ + } \ + }; \ + static_assert (true, "") /* Require semicolon after. */ +#define DEFINE_NULL_INSTANCE(Type) \ + const Type _hb_Null_##Type + +/* Global writable pool. Enlarge as necessary. */ + +/* To be fully correct, CrapPool must be thread_local. However, we do not rely on CrapPool + * for correct operation. It only exist to catch and divert program logic bugs instead of + * causing bad memory access. So, races there are not actually introducing incorrectness + * in the code. Has ~12kb binary size overhead to have it, also clang build fails with it. */ +extern HB_INTERNAL +/*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)]; + +/* CRAP pool: Common Region for Access Protection. */ +template +static inline Type& Crap () { + static_assert (hb_null_size (Type) <= HB_NULL_POOL_SIZE, "Increase HB_NULL_POOL_SIZE."); + Type *obj = reinterpret_cast (_hb_CrapPool); + memcpy (obj, &Null (Type), sizeof (*obj)); + return *obj; +} +template +struct CrapHelper +{ + typedef hb_remove_const> Type; + static Type & get_crap () { return Crap (); } +}; +#define Crap(Type) CrapHelper::get_crap () + +template +struct CrapOrNullHelper { + static Type & get () { return Crap (Type); } +}; +template +struct CrapOrNullHelper { + static const Type & get () { return Null (Type); } +}; +#define CrapOrNull(Type) CrapOrNullHelper::get () + + +/* + * hb_nonnull_ptr_t + */ + +template +struct hb_nonnull_ptr_t +{ + typedef hb_remove_pointer

T; + + hb_nonnull_ptr_t (T *v_ = nullptr) : v (v_) {} + T * operator = (T *v_) { return v = v_; } + T * operator -> () const { return get (); } + T & operator * () const { return *get (); } + T ** operator & () const { return &v; } + /* Only auto-cast to const types. */ + template operator const C * () const { return get (); } + operator const char * () const { return (const char *) get (); } + T * get () const { return v ? v : const_cast (&Null (T)); } + T * get_raw () const { return v; } + + private: + T *v; +}; + + +#endif /* HB_NULL_HH */ diff --git a/gfx/harfbuzz/src/hb-number-parser.hh b/gfx/harfbuzz/src/hb-number-parser.hh new file mode 100644 index 0000000000..ec68c3a728 --- /dev/null +++ b/gfx/harfbuzz/src/hb-number-parser.hh @@ -0,0 +1,237 @@ + +#line 1 "hb-number-parser.rl" +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + */ + +#ifndef HB_NUMBER_PARSER_HH +#define HB_NUMBER_PARSER_HH + +#include "hb.hh" + + +#line 32 "hb-number-parser.hh" +static const unsigned char _double_parser_trans_keys[] = { + 0u, 0u, 43u, 57u, 46u, 57u, 48u, 57u, 43u, 57u, 48u, 57u, 48u, 101u, 48u, 57u, + 46u, 101u, 0 +}; + +static const char _double_parser_key_spans[] = { + 0, 15, 12, 10, 15, 10, 54, 10, + 56 +}; + +static const unsigned char _double_parser_index_offsets[] = { + 0, 0, 16, 29, 40, 56, 67, 122, + 133 +}; + +static const char _double_parser_indicies[] = { + 0, 1, 2, 3, 1, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, + 1, 3, 1, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 1, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, + 1, 6, 1, 7, 1, 1, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, + 1, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 1, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 9, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 9, 1, 8, 8, 8, 8, 8, + 8, 8, 8, 8, 8, 1, 3, 1, + 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 9, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 9, 1, 0 +}; + +static const char _double_parser_trans_targs[] = { + 2, 0, 2, 3, 8, 6, 5, 5, + 7, 4 +}; + +static const char _double_parser_trans_actions[] = { + 0, 0, 1, 0, 2, 3, 0, 4, + 5, 0 +}; + +static const int double_parser_start = 1; +static const int double_parser_first_final = 6; +static const int double_parser_error = 0; + +static const int double_parser_en_main = 1; + + +#line 68 "hb-number-parser.rl" + + +/* Works only for n < 512 */ +static inline double +_pow10 (unsigned exponent) +{ + static const double _powers_of_10[] = + { + 1.0e+256, + 1.0e+128, + 1.0e+64, + 1.0e+32, + 1.0e+16, + 1.0e+8, + 10000., + 100., + 10. + }; + unsigned mask = 1 << (ARRAY_LENGTH (_powers_of_10) - 1); + double result = 1; + for (const double *power = _powers_of_10; mask; ++power, mask >>= 1) + if (exponent & mask) result *= *power; + return result; +} + +/* a variant of strtod that also gets end of buffer in its second argument */ +static inline double +strtod_rl (const char *p, const char **end_ptr /* IN/OUT */) +{ + double value = 0; + double frac = 0; + double frac_count = 0; + unsigned exp = 0; + bool neg = false, exp_neg = false, exp_overflow = false; + const unsigned long long MAX_FRACT = 0xFFFFFFFFFFFFFull; /* 2^52-1 */ + const unsigned MAX_EXP = 0x7FFu; /* 2^11-1 */ + + const char *pe = *end_ptr; + while (p < pe && ISSPACE (*p)) + p++; + + int cs; + +#line 132 "hb-number-parser.hh" + { + cs = double_parser_start; + } + +#line 135 "hb-number-parser.hh" + { + int _slen; + int _trans; + const unsigned char *_keys; + const char *_inds; + if ( p == pe ) + goto _test_eof; + if ( cs == 0 ) + goto _out; +_resume: + _keys = _double_parser_trans_keys + (cs<<1); + _inds = _double_parser_indicies + _double_parser_index_offsets[cs]; + + _slen = _double_parser_key_spans[cs]; + _trans = _inds[ _slen > 0 && _keys[0] <=(*p) && + (*p) <= _keys[1] ? + (*p) - _keys[0] : _slen ]; + + cs = _double_parser_trans_targs[_trans]; + + if ( _double_parser_trans_actions[_trans] == 0 ) + goto _again; + + switch ( _double_parser_trans_actions[_trans] ) { + case 1: +#line 37 "hb-number-parser.rl" + { neg = true; } + break; + case 4: +#line 38 "hb-number-parser.rl" + { exp_neg = true; } + break; + case 2: +#line 40 "hb-number-parser.rl" + { + value = value * 10. + ((*p) - '0'); +} + break; + case 3: +#line 43 "hb-number-parser.rl" + { + if (likely (frac <= MAX_FRACT / 10)) + { + frac = frac * 10. + ((*p) - '0'); + ++frac_count; + } +} + break; + case 5: +#line 50 "hb-number-parser.rl" + { + if (likely (exp * 10 + ((*p) - '0') <= MAX_EXP)) + exp = exp * 10 + ((*p) - '0'); + else + exp_overflow = true; +} + break; +#line 187 "hb-number-parser.hh" + } + +_again: + if ( cs == 0 ) + goto _out; + if ( ++p != pe ) + goto _resume; + _test_eof: {} + _out: {} + } + +#line 113 "hb-number-parser.rl" + + + *end_ptr = p; + + if (frac_count) value += frac / _pow10 (frac_count); + if (neg) value *= -1.; + + if (unlikely (exp_overflow)) + { + if (value == 0) return value; + if (exp_neg) return neg ? -DBL_MIN : DBL_MIN; + else return neg ? -DBL_MAX : DBL_MAX; + } + + if (exp) + { + if (exp_neg) value /= _pow10 (exp); + else value *= _pow10 (exp); + } + + return value; +} + +#endif /* HB_NUMBER_PARSER_HH */ diff --git a/gfx/harfbuzz/src/hb-number-parser.rl b/gfx/harfbuzz/src/hb-number-parser.rl new file mode 100644 index 0000000000..c6c4a3bab8 --- /dev/null +++ b/gfx/harfbuzz/src/hb-number-parser.rl @@ -0,0 +1,136 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + */ + +#ifndef HB_NUMBER_PARSER_HH +#define HB_NUMBER_PARSER_HH + +#include "hb.hh" + +%%{ + +machine double_parser; +alphtype unsigned char; +write data; + +action see_neg { neg = true; } +action see_exp_neg { exp_neg = true; } + +action add_int { + value = value * 10. + (fc - '0'); +} +action add_frac { + if (likely (frac <= MAX_FRACT / 10)) + { + frac = frac * 10. + (fc - '0'); + ++frac_count; + } +} +action add_exp { + if (likely (exp * 10 + (fc - '0') <= MAX_EXP)) + exp = exp * 10 + (fc - '0'); + else + exp_overflow = true; +} + +num = [0-9]+; + +main := ( + ( + (('+'|'-'@see_neg)? num @add_int) ('.' num @add_frac)? + | + (('+'|'-'@see_neg)? '.' num @add_frac) + ) + (('e'|'E') (('+'|'-'@see_exp_neg)? num @add_exp))? +); + +}%% + +/* Works only for n < 512 */ +static inline double +_pow10 (unsigned exponent) +{ + static const double _powers_of_10[] = + { + 1.0e+256, + 1.0e+128, + 1.0e+64, + 1.0e+32, + 1.0e+16, + 1.0e+8, + 10000., + 100., + 10. + }; + unsigned mask = 1 << (ARRAY_LENGTH (_powers_of_10) - 1); + double result = 1; + for (const double *power = _powers_of_10; mask; ++power, mask >>= 1) + if (exponent & mask) result *= *power; + return result; +} + +/* a variant of strtod that also gets end of buffer in its second argument */ +static inline double +strtod_rl (const char *p, const char **end_ptr /* IN/OUT */) +{ + double value = 0; + double frac = 0; + double frac_count = 0; + unsigned exp = 0; + bool neg = false, exp_neg = false, exp_overflow = false; + const unsigned long long MAX_FRACT = 0xFFFFFFFFFFFFFull; /* 2^52-1 */ + const unsigned MAX_EXP = 0x7FFu; /* 2^11-1 */ + + const char *pe = *end_ptr; + while (p < pe && ISSPACE (*p)) + p++; + + int cs; + %%{ + write init; + write exec; + }%% + + *end_ptr = p; + + if (frac_count) value += frac / _pow10 (frac_count); + if (neg) value *= -1.; + + if (unlikely (exp_overflow)) + { + if (value == 0) return value; + if (exp_neg) return neg ? -DBL_MIN : DBL_MIN; + else return neg ? -DBL_MAX : DBL_MAX; + } + + if (exp) + { + if (exp_neg) value /= _pow10 (exp); + else value *= _pow10 (exp); + } + + return value; +} + +#endif /* HB_NUMBER_PARSER_HH */ diff --git a/gfx/harfbuzz/src/hb-number.cc b/gfx/harfbuzz/src/hb-number.cc new file mode 100644 index 0000000000..c52b284e1d --- /dev/null +++ b/gfx/harfbuzz/src/hb-number.cc @@ -0,0 +1,79 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + */ + +#include "hb.hh" +#include "hb-number.hh" +#include "hb-number-parser.hh" + +template +static bool +_parse_number (const char **pp, const char *end, T *pv, + bool whole_buffer, Func f) +{ + char buf[32]; + unsigned len = hb_min (ARRAY_LENGTH (buf) - 1, (unsigned) (end - *pp)); + strncpy (buf, *pp, len); + buf[len] = '\0'; + + char *p = buf; + char *pend = p; + + errno = 0; + *pv = f (p, &pend); + if (unlikely (errno || p == pend || + /* Check if consumed whole buffer if is requested */ + (whole_buffer && pend - p != end - *pp))) + return false; + + *pp += pend - p; + return true; +} + +bool +hb_parse_int (const char **pp, const char *end, int *pv, bool whole_buffer) +{ + return _parse_number (pp, end, pv, whole_buffer, + [] (const char *p, char **end) + { return strtol (p, end, 10); }); +} + +bool +hb_parse_uint (const char **pp, const char *end, unsigned *pv, + bool whole_buffer, int base) +{ + return _parse_number (pp, end, pv, whole_buffer, + [base] (const char *p, char **end) + { return strtoul (p, end, base); }); +} + +bool +hb_parse_double (const char **pp, const char *end, double *pv, bool whole_buffer) +{ + const char *pend = end; + *pv = strtod_rl (*pp, &pend); + if (unlikely (*pp == pend)) return false; + *pp = pend; + return !whole_buffer || end == pend; +} diff --git a/gfx/harfbuzz/src/hb-number.hh b/gfx/harfbuzz/src/hb-number.hh new file mode 100644 index 0000000000..14d1260aa3 --- /dev/null +++ b/gfx/harfbuzz/src/hb-number.hh @@ -0,0 +1,41 @@ +/* + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + */ + +#ifndef HB_NUMBER_HH +#define HB_NUMBER_HH + +HB_INTERNAL bool +hb_parse_int (const char **pp, const char *end, int *pv, + bool whole_buffer = false); + +HB_INTERNAL bool +hb_parse_uint (const char **pp, const char *end, unsigned int *pv, + bool whole_buffer = false, int base = 10); + +HB_INTERNAL bool +hb_parse_double (const char **pp, const char *end, double *pv, + bool whole_buffer = false); + +#endif /* HB_NUMBER_HH */ diff --git a/gfx/harfbuzz/src/hb-object.hh b/gfx/harfbuzz/src/hb-object.hh new file mode 100644 index 0000000000..e2c2c3394c --- /dev/null +++ b/gfx/harfbuzz/src/hb-object.hh @@ -0,0 +1,357 @@ +/* + * Copyright © 2007 Chris Wilson + * Copyright © 2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Contributor(s): + * Chris Wilson + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OBJECT_HH +#define HB_OBJECT_HH + +#include "hb.hh" +#include "hb-atomic.hh" +#include "hb-mutex.hh" +#include "hb-vector.hh" + + +/* + * Lockable set + */ + +template +struct hb_lockable_set_t +{ + hb_vector_t items; + + void init () { items.init (); } + + template + item_t *replace_or_insert (T v, lock_t &l, bool replace) + { + l.lock (); + item_t *item = items.lsearch (v); + if (item) { + if (replace) { + item_t old = *item; + *item = v; + l.unlock (); + old.fini (); + } + else { + item = nullptr; + l.unlock (); + } + } else { + item = items.push (v); + l.unlock (); + } + return items.in_error () ? nullptr : item; + } + + template + void remove (T v, lock_t &l) + { + l.lock (); + item_t *item = items.lsearch (v); + if (item) + { + item_t old = *item; + *item = std::move (items.tail ()); + items.pop (); + l.unlock (); + old.fini (); + } else { + l.unlock (); + } + } + + template + bool find (T v, item_t *i, lock_t &l) + { + l.lock (); + item_t *item = items.lsearch (v); + if (item) + *i = *item; + l.unlock (); + return !!item; + } + + template + item_t *find_or_insert (T v, lock_t &l) + { + l.lock (); + item_t *item = items.find (v); + if (!item) { + item = items.push (v); + } + l.unlock (); + return item; + } + + void fini (lock_t &l) + { + if (!items.length) + { + /* No need to lock. */ + items.fini (); + return; + } + l.lock (); + while (items.length) + { + item_t old = items.tail (); + items.pop (); + l.unlock (); + old.fini (); + l.lock (); + } + items.fini (); + l.unlock (); + } + +}; + + +/* + * Reference-count. + */ + +struct hb_reference_count_t +{ + mutable hb_atomic_int_t ref_count; + + void init (int v = 1) { ref_count = v; } + int get_relaxed () const { return ref_count; } + int inc () const { return ref_count.inc (); } + int dec () const { return ref_count.dec (); } + void fini () { ref_count = -0x0000DEAD; } + + bool is_inert () const { return !ref_count; } + bool is_valid () const { return ref_count > 0; } +}; + + +/* user_data */ + +struct hb_user_data_array_t +{ + struct hb_user_data_item_t { + hb_user_data_key_t *key; + void *data; + hb_destroy_func_t destroy; + + bool operator == (const hb_user_data_key_t *other_key) const { return key == other_key; } + bool operator == (const hb_user_data_item_t &other) const { return key == other.key; } + + void fini () { if (destroy) destroy (data); } + }; + + hb_mutex_t lock; + hb_lockable_set_t items; + + void init () { lock.init (); items.init (); } + + void fini () { items.fini (lock); lock.fini (); } + + bool set (hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) + { + if (!key) + return false; + + if (replace) { + if (!data && !destroy) { + items.remove (key, lock); + return true; + } + } + hb_user_data_item_t item = {key, data, destroy}; + bool ret = !!items.replace_or_insert (item, lock, (bool) replace); + + return ret; + } + + void *get (hb_user_data_key_t *key) + { + hb_user_data_item_t item = {nullptr, nullptr, nullptr}; + + return items.find (key, &item, lock) ? item.data : nullptr; + } +}; + + +/* + * Object header + */ + +struct hb_object_header_t +{ + hb_reference_count_t ref_count; + mutable hb_atomic_int_t writable = 0; + hb_atomic_ptr_t user_data; + + bool is_inert () const { return !ref_count.get_relaxed (); } +}; +#define HB_OBJECT_HEADER_STATIC {} + + +/* + * Object + */ + +template +static inline void hb_object_trace (const Type *obj, const char *function) +{ + DEBUG_MSG (OBJECT, (void *) obj, + "%s refcount=%d", + function, + obj ? obj->header.ref_count.get_relaxed () : 0); +} + +template +static inline Type *hb_object_create (Ts... ds) +{ + Type *obj = (Type *) hb_calloc (1, sizeof (Type)); + + if (unlikely (!obj)) + return obj; + + new (obj) Type (std::forward (ds)...); + + hb_object_init (obj); + hb_object_trace (obj, HB_FUNC); + + return obj; +} +template +static inline void hb_object_init (Type *obj) +{ + obj->header.ref_count.init (); + obj->header.writable = true; + obj->header.user_data.init (); +} +template +static inline bool hb_object_is_valid (const Type *obj) +{ + return likely (obj->header.ref_count.is_valid ()); +} +template +static inline bool hb_object_is_immutable (const Type *obj) +{ + return !obj->header.writable; +} +template +static inline void hb_object_make_immutable (const Type *obj) +{ + obj->header.writable = false; +} +template +static inline Type *hb_object_reference (Type *obj) +{ + hb_object_trace (obj, HB_FUNC); + if (unlikely (!obj || obj->header.is_inert ())) + return obj; + assert (hb_object_is_valid (obj)); + obj->header.ref_count.inc (); + return obj; +} +template +static inline bool hb_object_destroy (Type *obj) +{ + hb_object_trace (obj, HB_FUNC); + if (unlikely (!obj || obj->header.is_inert ())) + return false; + assert (hb_object_is_valid (obj)); + if (obj->header.ref_count.dec () != 1) + return false; + + hb_object_fini (obj); + + if (!std::is_trivially_destructible::value) + obj->~Type (); + + return true; +} +template +static inline void hb_object_fini (Type *obj) +{ + obj->header.ref_count.fini (); /* Do this before user_data */ + hb_user_data_array_t *user_data = obj->header.user_data.get_acquire (); + if (user_data) + { + user_data->fini (); + hb_free (user_data); + obj->header.user_data.set_relaxed (nullptr); + } +} +template +static inline bool hb_object_set_user_data (Type *obj, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + if (unlikely (!obj || obj->header.is_inert ())) + return false; + assert (hb_object_is_valid (obj)); + +retry: + hb_user_data_array_t *user_data = obj->header.user_data.get_acquire (); + if (unlikely (!user_data)) + { + user_data = (hb_user_data_array_t *) hb_calloc (sizeof (hb_user_data_array_t), 1); + if (unlikely (!user_data)) + return false; + user_data->init (); + if (unlikely (!obj->header.user_data.cmpexch (nullptr, user_data))) + { + user_data->fini (); + hb_free (user_data); + goto retry; + } + } + + return user_data->set (key, data, destroy, replace); +} + +template +static inline void *hb_object_get_user_data (Type *obj, + hb_user_data_key_t *key) +{ + if (unlikely (!obj || obj->header.is_inert ())) + return nullptr; + assert (hb_object_is_valid (obj)); + hb_user_data_array_t *user_data = obj->header.user_data.get_acquire (); + if (!user_data) + return nullptr; + return user_data->get (key); +} + + +#endif /* HB_OBJECT_HH */ diff --git a/gfx/harfbuzz/src/hb-open-file.hh b/gfx/harfbuzz/src/hb-open-file.hh new file mode 100644 index 0000000000..13570a46e0 --- /dev/null +++ b/gfx/harfbuzz/src/hb-open-file.hh @@ -0,0 +1,537 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OPEN_FILE_HH +#define HB_OPEN_FILE_HH + +#include "hb-open-type.hh" +#include "hb-ot-head-table.hh" + + +namespace OT { + +/* + * + * The OpenType Font File + * + */ + + +/* + * Organization of an OpenType Font + */ + +struct OpenTypeFontFile; +struct OpenTypeOffsetTable; +struct TTCHeader; + + +typedef struct TableRecord +{ + int cmp (Tag t) const { return -t.cmp (tag); } + + HB_INTERNAL static int cmp (const void *pa, const void *pb) + { + const TableRecord *a = (const TableRecord *) pa; + const TableRecord *b = (const TableRecord *) pb; + return b->cmp (a->tag); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + Tag tag; /* 4-byte identifier. */ + CheckSum checkSum; /* CheckSum for this table. */ + Offset32 offset; /* Offset from beginning of TrueType font + * file. */ + HBUINT32 length; /* Length of this table. */ + public: + DEFINE_SIZE_STATIC (16); +} OpenTypeTable; + +typedef struct OpenTypeOffsetTable +{ + friend struct OpenTypeFontFile; + + unsigned int get_table_count () const { return tables.len; } + const TableRecord& get_table (unsigned int i) const + { return tables[i]; } + unsigned int get_table_tags (unsigned int start_offset, + unsigned int *table_count, /* IN/OUT */ + hb_tag_t *table_tags /* OUT */) const + { + if (table_count) + { + + tables.as_array ().sub_array (start_offset, table_count) + | hb_map (&TableRecord::tag) + | hb_sink (hb_array (table_tags, *table_count)) + ; + } + return tables.len; + } + bool find_table_index (hb_tag_t tag, unsigned int *table_index) const + { + Tag t; + t = tag; + /* Use lfind for small fonts; there are fonts that have unsorted table entries; + * those tend to work in other tools, so tolerate them. + * https://github.com/harfbuzz/harfbuzz/issues/3065 */ + if (tables.len < 16) + return tables.lfind (t, table_index, HB_NOT_FOUND_STORE, Index::NOT_FOUND_INDEX); + else + return tables.bfind (t, table_index, HB_NOT_FOUND_STORE, Index::NOT_FOUND_INDEX); + } + const TableRecord& get_table_by_tag (hb_tag_t tag) const + { + unsigned int table_index; + find_table_index (tag, &table_index); + return get_table (table_index); + } + + public: + + template >::value))> + bool serialize (hb_serialize_context_t *c, + hb_tag_t sfnt_tag, + Iterator it) + { + TRACE_SERIALIZE (this); + /* Alloc 12 for the OTHeader. */ + if (unlikely (!c->extend_min (this))) return_trace (false); + /* Write sfntVersion (bytes 0..3). */ + sfnt_version = sfnt_tag; + /* Take space for numTables, searchRange, entrySelector, RangeShift + * and the TableRecords themselves. */ + unsigned num_items = it.len (); + if (unlikely (!tables.serialize (c, num_items))) return_trace (false); + + const char *dir_end = (const char *) c->head; + HBUINT32 *checksum_adjustment = nullptr; + + /* Write OffsetTables, alloc for and write actual table blobs. */ + unsigned i = 0; + for (hb_pair_t entry : it) + { + hb_blob_t *blob = entry.second; + unsigned len = blob->length; + + /* Allocate room for the table and copy it. */ + char *start = (char *) c->allocate_size (len); + if (unlikely (!start)) return false; + + TableRecord &rec = tables.arrayZ[i]; + rec.tag = entry.first; + rec.length = len; + rec.offset = 0; + if (unlikely (!c->check_assign (rec.offset, + (unsigned) ((char *) start - (char *) this), + HB_SERIALIZE_ERROR_OFFSET_OVERFLOW))) + return_trace (false); + + if (likely (len)) + hb_memcpy (start, blob->data, len); + + /* 4-byte alignment. */ + c->align (4); + const char *end = (const char *) c->head; + + if (entry.first == HB_OT_TAG_head && + (unsigned) (end - start) >= head::static_size) + { + head *h = (head *) start; + checksum_adjustment = &h->checkSumAdjustment; + *checksum_adjustment = 0; + } + + rec.checkSum.set_for_data (start, end - start); + i++; + } + + tables.qsort (); + + if (checksum_adjustment) + { + CheckSum checksum; + + /* The following line is a slower version of the following block. */ + //checksum.set_for_data (this, (const char *) c->head - (const char *) this); + checksum.set_for_data (this, dir_end - (const char *) this); + for (unsigned int i = 0; i < num_items; i++) + { + TableRecord &rec = tables.arrayZ[i]; + checksum = checksum + rec.checkSum; + } + + *checksum_adjustment = 0xB1B0AFBAu - checksum; + } + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && tables.sanitize (c)); + } + + protected: + Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */ + BinSearchArrayOf + tables; + public: + DEFINE_SIZE_ARRAY (12, tables); +} OpenTypeFontFace; + + +/* + * TrueType Collections + */ + +struct TTCHeaderVersion1 +{ + friend struct TTCHeader; + + unsigned int get_face_count () const { return table.len; } + const OpenTypeFontFace& get_face (unsigned int i) const { return this+table[i]; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (table.sanitize (c, this)); + } + + protected: + Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ + FixedVersion<>version; /* Version of the TTC Header (1.0), + * 0x00010000u */ + Array32Of> + table; /* Array of offsets to the OffsetTable for each font + * from the beginning of the file */ + public: + DEFINE_SIZE_ARRAY (12, table); +}; + +struct TTCHeader +{ + friend struct OpenTypeFontFile; + + private: + + unsigned int get_face_count () const + { + switch (u.header.version.major) { + case 2: /* version 2 is compatible with version 1 */ + case 1: return u.version1.get_face_count (); + default:return 0; + } + } + const OpenTypeFontFace& get_face (unsigned int i) const + { + switch (u.header.version.major) { + case 2: /* version 2 is compatible with version 1 */ + case 1: return u.version1.get_face (i); + default:return Null (OpenTypeFontFace); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.header.version.sanitize (c))) return_trace (false); + switch (u.header.version.major) { + case 2: /* version 2 is compatible with version 1 */ + case 1: return_trace (u.version1.sanitize (c)); + default:return_trace (true); + } + } + + protected: + union { + struct { + Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ + FixedVersion<>version; /* Version of the TTC Header (1.0 or 2.0), + * 0x00010000u or 0x00020000u */ + } header; + TTCHeaderVersion1 version1; + } u; +}; + +/* + * Mac Resource Fork + * + * http://mirror.informatimago.com/next/developer.apple.com/documentation/mac/MoreToolbox/MoreToolbox-99.html + */ + +struct ResourceRecord +{ + const OpenTypeFontFace & get_face (const void *data_base) const + { return * reinterpret_cast ((data_base+offset).arrayZ); } + + bool sanitize (hb_sanitize_context_t *c, + const void *data_base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + offset.sanitize (c, data_base) && + get_face (data_base).sanitize (c)); + } + + protected: + HBUINT16 id; /* Resource ID. */ + HBINT16 nameOffset; /* Offset from beginning of resource name list + * to resource name, -1 means there is none. */ + HBUINT8 attrs; /* Resource attributes */ + NNOffset24To> + offset; /* Offset from beginning of data block to + * data for this resource */ + HBUINT32 reserved; /* Reserved for handle to resource */ + public: + DEFINE_SIZE_STATIC (12); +}; + +#define HB_TAG_sfnt HB_TAG ('s','f','n','t') + +struct ResourceTypeRecord +{ + unsigned int get_resource_count () const + { return tag == HB_TAG_sfnt ? resCountM1 + 1 : 0; } + + bool is_sfnt () const { return tag == HB_TAG_sfnt; } + + const ResourceRecord& get_resource_record (unsigned int i, + const void *type_base) const + { return (type_base+resourcesZ).as_array (get_resource_count ())[i]; } + + bool sanitize (hb_sanitize_context_t *c, + const void *type_base, + const void *data_base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + resourcesZ.sanitize (c, type_base, + get_resource_count (), + data_base)); + } + + protected: + Tag tag; /* Resource type. */ + HBUINT16 resCountM1; /* Number of resources minus 1. */ + NNOffset16To> + resourcesZ; /* Offset from beginning of resource type list + * to reference item list for this type. */ + public: + DEFINE_SIZE_STATIC (8); +}; + +struct ResourceMap +{ + unsigned int get_face_count () const + { + unsigned int count = get_type_count (); + for (unsigned int i = 0; i < count; i++) + { + const ResourceTypeRecord& type = get_type_record (i); + if (type.is_sfnt ()) + return type.get_resource_count (); + } + return 0; + } + + const OpenTypeFontFace& get_face (unsigned int idx, + const void *data_base) const + { + unsigned int count = get_type_count (); + for (unsigned int i = 0; i < count; i++) + { + const ResourceTypeRecord& type = get_type_record (i); + /* The check for idx < count is here because ResourceRecord is NOT null-safe. + * Because an offset of 0 there does NOT mean null. */ + if (type.is_sfnt () && idx < type.get_resource_count ()) + return type.get_resource_record (idx, &(this+typeList)).get_face (data_base); + } + return Null (OpenTypeFontFace); + } + + bool sanitize (hb_sanitize_context_t *c, const void *data_base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + typeList.sanitize (c, this, + &(this+typeList), + data_base)); + } + + private: + unsigned int get_type_count () const { return (this+typeList).lenM1 + 1; } + + const ResourceTypeRecord& get_type_record (unsigned int i) const + { return (this+typeList)[i]; } + + protected: + HBUINT8 reserved0[16]; /* Reserved for copy of resource header */ + HBUINT32 reserved1; /* Reserved for handle to next resource map */ + HBUINT16 resreved2; /* Reserved for file reference number */ + HBUINT16 attrs; /* Resource fork attribute */ + NNOffset16To> + typeList; /* Offset from beginning of map to + * resource type list */ + Offset16 nameList; /* Offset from beginning of map to + * resource name list */ + public: + DEFINE_SIZE_STATIC (28); +}; + +struct ResourceForkHeader +{ + unsigned int get_face_count () const + { return (this+map).get_face_count (); } + + const OpenTypeFontFace& get_face (unsigned int idx, + unsigned int *base_offset = nullptr) const + { + const OpenTypeFontFace &face = (this+map).get_face (idx, &(this+data)); + if (base_offset) + *base_offset = (const char *) &face - (const char *) this; + return face; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + data.sanitize (c, this, dataLen) && + map.sanitize (c, this, &(this+data))); + } + + protected: + NNOffset32To> + data; /* Offset from beginning of resource fork + * to resource data */ + NNOffset32To + map; /* Offset from beginning of resource fork + * to resource map */ + HBUINT32 dataLen; /* Length of resource data */ + HBUINT32 mapLen; /* Length of resource map */ + public: + DEFINE_SIZE_STATIC (16); +}; + +/* + * OpenType Font File + */ + +struct OpenTypeFontFile +{ + enum { + CFFTag = HB_TAG ('O','T','T','O'), /* OpenType with Postscript outlines */ + TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 ), /* OpenType with TrueType outlines */ + TTCTag = HB_TAG ('t','t','c','f'), /* TrueType Collection */ + DFontTag = HB_TAG ( 0 , 0 , 1 , 0 ), /* DFont Mac Resource Fork */ + TrueTag = HB_TAG ('t','r','u','e'), /* Obsolete Apple TrueType */ + Typ1Tag = HB_TAG ('t','y','p','1') /* Obsolete Apple Type1 font in SFNT container */ + }; + + hb_tag_t get_tag () const { return u.tag; } + + unsigned int get_face_count () const + { + switch (u.tag) { + case CFFTag: /* All the non-collection tags */ + case TrueTag: + case Typ1Tag: + case TrueTypeTag: return 1; + case TTCTag: return u.ttcHeader.get_face_count (); + case DFontTag: return u.rfHeader.get_face_count (); + default: return 0; + } + } + const OpenTypeFontFace& get_face (unsigned int i, unsigned int *base_offset = nullptr) const + { + if (base_offset) + *base_offset = 0; + switch (u.tag) { + /* Note: for non-collection SFNT data we ignore index. This is because + * Apple dfont container is a container of SFNT's. So each SFNT is a + * non-TTC, but the index is more than zero. */ + case CFFTag: /* All the non-collection tags */ + case TrueTag: + case Typ1Tag: + case TrueTypeTag: return u.fontFace; + case TTCTag: return u.ttcHeader.get_face (i); + case DFontTag: return u.rfHeader.get_face (i, base_offset); + default: return Null (OpenTypeFontFace); + } + } + + template >::value))> + bool serialize_single (hb_serialize_context_t *c, + hb_tag_t sfnt_tag, + Iterator items) + { + TRACE_SERIALIZE (this); + assert (sfnt_tag != TTCTag); + if (unlikely (!c->extend_min (this))) return_trace (false); + return_trace (u.fontFace.serialize (c, sfnt_tag, items)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.tag.sanitize (c))) return_trace (false); + switch (u.tag) { + case CFFTag: /* All the non-collection tags */ + case TrueTag: + case Typ1Tag: + case TrueTypeTag: return_trace (u.fontFace.sanitize (c)); + case TTCTag: return_trace (u.ttcHeader.sanitize (c)); + case DFontTag: return_trace (u.rfHeader.sanitize (c)); + default: return_trace (true); + } + } + + protected: + union { + Tag tag; /* 4-byte identifier. */ + OpenTypeFontFace fontFace; + TTCHeader ttcHeader; + ResourceForkHeader rfHeader; + } u; + public: + DEFINE_SIZE_UNION (4, tag); +}; + + +} /* namespace OT */ + + +#endif /* HB_OPEN_FILE_HH */ diff --git a/gfx/harfbuzz/src/hb-open-type.hh b/gfx/harfbuzz/src/hb-open-type.hh new file mode 100644 index 0000000000..4c9bfebcec --- /dev/null +++ b/gfx/harfbuzz/src/hb-open-type.hh @@ -0,0 +1,1147 @@ +/* + * Copyright © 2007,2008,2009,2010 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OPEN_TYPE_HH +#define HB_OPEN_TYPE_HH + +#include "hb.hh" +#include "hb-blob.hh" +#include "hb-face.hh" +#include "hb-machinery.hh" +#include "hb-meta.hh" +#include "hb-subset.hh" + + +namespace OT { + + +/* + * + * The OpenType Font File: Data Types + */ + + +/* "The following data types are used in the OpenType font file. + * All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ + +/* + * Int types + */ + +/* Integer types in big-endian order and no alignment requirement */ +template +struct IntType +{ + typedef Type type; + + IntType () = default; + explicit constexpr IntType (Type V) : v {V} {} + IntType& operator = (Type i) { v = i; return *this; } + /* For reason we define cast out operator for signed/unsigned, instead of Type, see: + * https://github.com/harfbuzz/harfbuzz/pull/2875/commits/09836013995cab2b9f07577a179ad7b024130467 */ + operator typename std::conditional::value, signed, unsigned>::type () const { return v; } + + bool operator == (const IntType &o) const { return (Type) v == (Type) o.v; } + bool operator != (const IntType &o) const { return !(*this == o); } + + IntType& operator += (unsigned count) { *this = *this + count; return *this; } + IntType& operator -= (unsigned count) { *this = *this - count; return *this; } + IntType& operator ++ () { *this += 1; return *this; } + IntType& operator -- () { *this -= 1; return *this; } + IntType operator ++ (int) { IntType c (*this); ++*this; return c; } + IntType operator -- (int) { IntType c (*this); --*this; return c; } + + HB_INTERNAL static int cmp (const IntType *a, const IntType *b) + { return b->cmp (*a); } + HB_INTERNAL static int cmp (const void *a, const void *b) + { + IntType *pa = (IntType *) a; + IntType *pb = (IntType *) b; + + return pb->cmp (*pa); + } + template ::value && + sizeof (Type2) < sizeof (int) && + sizeof (Type) < sizeof (int))> + int cmp (Type2 a) const + { + Type b = v; + return (int) a - (int) b; + } + template + int cmp (Type2 a) const + { + Type b = v; + return a < b ? -1 : a == b ? 0 : +1; + } + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + protected: + BEInt v; + public: + DEFINE_SIZE_STATIC (Size); +}; + +typedef IntType HBUINT8; /* 8-bit unsigned integer. */ +typedef IntType HBINT8; /* 8-bit signed integer. */ +typedef IntType HBUINT16; /* 16-bit unsigned integer. */ +typedef IntType HBINT16; /* 16-bit signed integer. */ +typedef IntType HBUINT32; /* 32-bit unsigned integer. */ +typedef IntType HBINT32; /* 32-bit signed integer. */ +/* Note: we cannot defined a signed HBINT24 because there's no corresponding C type. + * Works for unsigned, but not signed, since we rely on compiler for sign-extension. */ +typedef IntType HBUINT24; /* 24-bit unsigned integer. */ + +/* 15-bit unsigned number; top bit used for extension. */ +struct HBUINT15 : HBUINT16 +{ + /* TODO Flesh out; actually mask top bit. */ + HBUINT15& operator = (uint16_t i ) { HBUINT16::operator= (i); return *this; } + public: + DEFINE_SIZE_STATIC (2); +}; + +/* 16-bit signed integer (HBINT16) that describes a quantity in FUnits. */ +typedef HBINT16 FWORD; + +/* 32-bit signed integer (HBINT32) that describes a quantity in FUnits. */ +typedef HBINT32 FWORD32; + +/* 16-bit unsigned integer (HBUINT16) that describes a quantity in FUnits. */ +typedef HBUINT16 UFWORD; + +template +struct HBFixed : Type +{ + static constexpr float shift = (float) (1 << fraction_bits); + static_assert (Type::static_size * 8 > fraction_bits, ""); + + operator signed () const = delete; + operator unsigned () const = delete; + typename Type::type to_int () const { return Type::v; } + void set_int (typename Type::type i ) { Type::v = i; } + float to_float (float offset = 0) const { return ((int32_t) Type::v + offset) / shift; } + void set_float (float f) { Type::v = roundf (f * shift); } + public: + DEFINE_SIZE_STATIC (Type::static_size); +}; + +/* 16-bit signed fixed number with the low 14 bits of fraction (2.14). */ +using F2DOT14 = HBFixed; +using F4DOT12 = HBFixed; +using F6DOT10 = HBFixed; + +/* 32-bit signed fixed-point number (16.16). */ +using F16DOT16 = HBFixed; + +/* Date represented in number of seconds since 12:00 midnight, January 1, + * 1904. The value is represented as a signed 64-bit integer. */ +struct LONGDATETIME +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + protected: + HBINT32 major; + HBUINT32 minor; + public: + DEFINE_SIZE_STATIC (8); +}; + +/* Array of four uint8s (length = 32 bits) used to identify a script, language + * system, feature, or baseline */ +struct Tag : HBUINT32 +{ + Tag& operator = (hb_tag_t i) { HBUINT32::operator= (i); return *this; } + /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ + operator const char* () const { return reinterpret_cast (this); } + operator char* () { return reinterpret_cast (this); } + public: + DEFINE_SIZE_STATIC (4); +}; + +/* Glyph index number, same as uint16 (length = 16 bits) */ +struct HBGlyphID16 : HBUINT16 +{ + HBGlyphID16& operator = (uint16_t i) { HBUINT16::operator= (i); return *this; } +}; +struct HBGlyphID24 : HBUINT24 +{ + HBGlyphID24& operator = (uint32_t i) { HBUINT24::operator= (i); return *this; } +}; + +/* Script/language-system/feature index */ +struct Index : HBUINT16 { + static constexpr unsigned NOT_FOUND_INDEX = 0xFFFFu; + Index& operator = (uint16_t i) { HBUINT16::operator= (i); return *this; } +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, Index); + +typedef Index NameID; + +struct VarIdx : HBUINT32 { + static constexpr unsigned NO_VARIATION = 0xFFFFFFFFu; + static_assert (NO_VARIATION == HB_OT_LAYOUT_NO_VARIATIONS_INDEX, ""); + static uint32_t add (uint32_t i, unsigned short v) + { + if (i == NO_VARIATION) return i; + return i + v; + } + VarIdx& operator = (uint32_t i) { HBUINT32::operator= (i); return *this; } +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, VarIdx); + +/* Offset, Null offset = 0 */ +template +struct Offset : Type +{ + Offset& operator = (typename Type::type i) { Type::operator= (i); return *this; } + + typedef Type type; + + bool is_null () const { return has_null && 0 == *this; } + + public: + DEFINE_SIZE_STATIC (sizeof (Type)); +}; + +typedef Offset Offset16; +typedef Offset Offset24; +typedef Offset Offset32; + + +/* CheckSum */ +struct CheckSum : HBUINT32 +{ + CheckSum& operator = (uint32_t i) { HBUINT32::operator= (i); return *this; } + + /* This is reference implementation from the spec. */ + static uint32_t CalcTableChecksum (const HBUINT32 *Table, uint32_t Length) + { + uint32_t Sum = 0L; + assert (0 == (Length & 3)); + const HBUINT32 *EndPtr = Table + Length / HBUINT32::static_size; + + while (Table < EndPtr) + Sum += *Table++; + return Sum; + } + + /* Note: data should be 4byte aligned and have 4byte padding at the end. */ + void set_for_data (const void *data, unsigned int length) + { *this = CalcTableChecksum ((const HBUINT32 *) data, length); } + + public: + DEFINE_SIZE_STATIC (4); +}; + + +/* + * Version Numbers + */ + +template +struct FixedVersion +{ + uint32_t to_int () const { return (major << (sizeof (FixedType) * 8)) + minor; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + FixedType major; + FixedType minor; + public: + DEFINE_SIZE_STATIC (2 * sizeof (FixedType)); +}; + + +/* + * Template subclasses of Offset that do the dereferencing. + * Use: (base+offset) + */ + +template +struct _hb_has_null +{ + static const Type *get_null () { return nullptr; } + static Type *get_crap () { return nullptr; } +}; +template +struct _hb_has_null +{ + static const Type *get_null () { return &Null (Type); } + static Type *get_crap () { return &Crap (Type); } +}; + +template +struct OffsetTo : Offset +{ + // Make sure Type is not unbounded; works only for types that are fully defined at OffsetTo time. + static_assert (has_null == false || + (hb_has_null_size (Type) || !hb_has_min_size (Type)), ""); + + HB_DELETE_COPY_ASSIGN (OffsetTo); + OffsetTo () = default; + + OffsetTo& operator = (typename OffsetType::type i) { OffsetType::operator= (i); return *this; } + + const Type& operator () (const void *base) const + { + if (unlikely (this->is_null ())) return *_hb_has_null::get_null (); + return StructAtOffset (base, *this); + } + Type& operator () (void *base) const + { + if (unlikely (this->is_null ())) return *_hb_has_null::get_crap (); + return StructAtOffset (base, *this); + } + + template + friend const Type& operator + (const Base &base, const OffsetTo &offset) { return offset ((const void *) base); } + template + friend const Type& operator + (const OffsetTo &offset, const Base &base) { return offset ((const void *) base); } + template + friend Type& operator + (Base &&base, OffsetTo &offset) { return offset ((void *) base); } + template + friend Type& operator + (OffsetTo &offset, Base &&base) { return offset ((void *) base); } + + + template + bool serialize_subset (hb_subset_context_t *c, const OffsetTo& src, + const void *src_base, Ts&&... ds) + { + *this = 0; + if (src.is_null ()) + return false; + + auto *s = c->serializer; + + s->push (); + + bool ret = c->dispatch (src_base+src, std::forward (ds)...); + + if (ret || !has_null) + s->add_link (*this, s->pop_pack ()); + else + s->pop_discard (); + + return ret; + } + + + template + bool serialize_serialize (hb_serialize_context_t *c, Ts&&... ds) + { + *this = 0; + + Type* obj = c->push (); + bool ret = obj->serialize (c, std::forward (ds)...); + + if (ret) + c->add_link (*this, c->pop_pack ()); + else + c->pop_discard (); + + return ret; + } + + /* TODO: Somehow merge this with previous function into a serialize_dispatch(). */ + /* Workaround clang bug: https://bugs.llvm.org/show_bug.cgi?id=23029 + * Can't compile: whence = hb_serialize_context_t::Head followed by Ts&&... + */ + template + bool serialize_copy (hb_serialize_context_t *c, const OffsetTo& src, + const void *src_base, unsigned dst_bias, + hb_serialize_context_t::whence_t whence, + Ts&&... ds) + { + *this = 0; + if (src.is_null ()) + return false; + + c->push (); + + bool ret = c->copy (src_base+src, std::forward (ds)...); + + c->add_link (*this, c->pop_pack (), whence, dst_bias); + + return ret; + } + + bool serialize_copy (hb_serialize_context_t *c, const OffsetTo& src, + const void *src_base, unsigned dst_bias = 0) + { return serialize_copy (c, src, src_base, dst_bias, hb_serialize_context_t::Head); } + + bool sanitize_shallow (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) return_trace (false); + if (unlikely (this->is_null ())) return_trace (true); + if (unlikely ((const char *) base + (unsigned) *this < (const char *) base)) return_trace (false); + return_trace (true); + } + + template + bool sanitize (hb_sanitize_context_t *c, const void *base, Ts&&... ds) const + { + TRACE_SANITIZE (this); + return_trace (sanitize_shallow (c, base) && + (this->is_null () || + c->dispatch (StructAtOffset (base, *this), std::forward (ds)...) || + neuter (c))); + } + + /* Set the offset to Null */ + bool neuter (hb_sanitize_context_t *c) const + { + if (!has_null) return false; + return c->try_set (this, 0); + } + DEFINE_SIZE_STATIC (sizeof (OffsetType)); +}; +/* Partial specializations. */ +template using Offset16To = OffsetTo; +template using Offset24To = OffsetTo; +template using Offset32To = OffsetTo; + +template using NNOffsetTo = OffsetTo; +template using NNOffset16To = Offset16To; +template using NNOffset24To = Offset24To; +template using NNOffset32To = Offset32To; + + +/* + * Array Types + */ + +template +struct UnsizedArrayOf +{ + typedef Type item_t; + static constexpr unsigned item_size = hb_static_size (Type); + + HB_DELETE_CREATE_COPY_ASSIGN (UnsizedArrayOf); + + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + const Type *p = &arrayZ[i]; + if (unlikely ((const void *) p < (const void *) arrayZ)) return Null (Type); /* Overflowed. */ + _hb_compiler_memory_r_barrier (); + return *p; + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + Type *p = &arrayZ[i]; + if (unlikely ((const void *) p < (const void *) arrayZ)) return Crap (Type); /* Overflowed. */ + _hb_compiler_memory_r_barrier (); + return *p; + } + + unsigned int get_size (unsigned int len) const + { return len * Type::static_size; } + + template operator T * () { return arrayZ; } + template operator const T * () const { return arrayZ; } + hb_array_t as_array (unsigned int len) + { return hb_array (arrayZ, len); } + hb_array_t as_array (unsigned int len) const + { return hb_array (arrayZ, len); } + + template + Type &lsearch (unsigned int len, const T &x, Type ¬_found = Crap (Type)) + { return *as_array (len).lsearch (x, ¬_found); } + template + const Type &lsearch (unsigned int len, const T &x, const Type ¬_found = Null (Type)) const + { return *as_array (len).lsearch (x, ¬_found); } + template + bool lfind (unsigned int len, const T &x, unsigned int *i = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { return as_array (len).lfind (x, i, not_found, to_store); } + + void qsort (unsigned int len, unsigned int start = 0, unsigned int end = (unsigned int) -1) + { as_array (len).qsort (start, end); } + + bool serialize (hb_serialize_context_t *c, unsigned int items_len, bool clear = true) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_size (this, get_size (items_len), clear))) return_trace (false); + return_trace (true); + } + template + bool serialize (hb_serialize_context_t *c, Iterator items) + { + TRACE_SERIALIZE (this); + unsigned count = hb_len (items); + if (unlikely (!serialize (c, count, false))) return_trace (false); + /* TODO Umm. Just exhaust the iterator instead? Being extra + * cautious right now.. */ + for (unsigned i = 0; i < count; i++, ++items) + arrayZ[i] = *items; + return_trace (true); + } + + UnsizedArrayOf* copy (hb_serialize_context_t *c, unsigned count) const + { + TRACE_SERIALIZE (this); + auto *out = c->start_embed (this); + if (unlikely (!as_array (count).copy (c))) return_trace (nullptr); + return_trace (out); + } + + template + bool sanitize (hb_sanitize_context_t *c, unsigned int count, Ts&&... ds) const + { + TRACE_SANITIZE (this); + if (unlikely (!sanitize_shallow (c, count))) return_trace (false); + if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + for (unsigned int i = 0; i < count; i++) + if (unlikely (!c->dispatch (arrayZ[i], std::forward (ds)...))) + return_trace (false); + return_trace (true); + } + + bool sanitize_shallow (hb_sanitize_context_t *c, unsigned int count) const + { + TRACE_SANITIZE (this); + return_trace (c->check_array (arrayZ, count)); + } + + public: + Type arrayZ[HB_VAR_ARRAY]; + public: + DEFINE_SIZE_UNBOUNDED (0); +}; + +/* Unsized array of offset's */ +template +using UnsizedArray16OfOffsetTo = UnsizedArrayOf>; + +/* Unsized array of offsets relative to the beginning of the array itself. */ +template +struct UnsizedListOfOffset16To : UnsizedArray16OfOffsetTo +{ + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + const OffsetTo *p = &this->arrayZ[i]; + if (unlikely ((const void *) p < (const void *) this->arrayZ)) return Null (Type); /* Overflowed. */ + _hb_compiler_memory_r_barrier (); + return this+*p; + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + const OffsetTo *p = &this->arrayZ[i]; + if (unlikely ((const void *) p < (const void *) this->arrayZ)) return Crap (Type); /* Overflowed. */ + _hb_compiler_memory_r_barrier (); + return this+*p; + } + + template + bool sanitize (hb_sanitize_context_t *c, unsigned int count, Ts&&... ds) const + { + TRACE_SANITIZE (this); + return_trace ((UnsizedArray16OfOffsetTo + ::sanitize (c, count, this, std::forward (ds)...))); + } +}; + +/* An array with sorted elements. Supports binary searching. */ +template +struct SortedUnsizedArrayOf : UnsizedArrayOf +{ + hb_sorted_array_t as_array (unsigned int len) + { return hb_sorted_array (this->arrayZ, len); } + hb_sorted_array_t as_array (unsigned int len) const + { return hb_sorted_array (this->arrayZ, len); } + operator hb_sorted_array_t () { return as_array (); } + operator hb_sorted_array_t () const { return as_array (); } + + template + Type &bsearch (unsigned int len, const T &x, Type ¬_found = Crap (Type)) + { return *as_array (len).bsearch (x, ¬_found); } + template + const Type &bsearch (unsigned int len, const T &x, const Type ¬_found = Null (Type)) const + { return *as_array (len).bsearch (x, ¬_found); } + template + bool bfind (unsigned int len, const T &x, unsigned int *i = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { return as_array (len).bfind (x, i, not_found, to_store); } +}; + + +/* An array with a number of elements. */ +template +struct ArrayOf +{ + typedef Type item_t; + static constexpr unsigned item_size = hb_static_size (Type); + + HB_DELETE_CREATE_COPY_ASSIGN (ArrayOf); + + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= len)) return Null (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i]; + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= len)) return Crap (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i]; + } + + unsigned int get_size () const + { return len.static_size + len * Type::static_size; } + + explicit operator bool () const { return len; } + + void pop () { len--; } + + hb_array_t< Type> as_array () { return hb_array (arrayZ, len); } + hb_array_t as_array () const { return hb_array (arrayZ, len); } + + /* Iterator. */ + typedef hb_array_t iter_t; + typedef hb_array_t< Type> writer_t; + iter_t iter () const { return as_array (); } + writer_t writer () { return as_array (); } + operator iter_t () const { return iter (); } + operator writer_t () { return writer (); } + + /* Faster range-based for loop. */ + const Type *begin () const { return arrayZ; } + const Type *end () const { return arrayZ + len; } + + template + Type &lsearch (const T &x, Type ¬_found = Crap (Type)) + { return *as_array ().lsearch (x, ¬_found); } + template + const Type &lsearch (const T &x, const Type ¬_found = Null (Type)) const + { return *as_array ().lsearch (x, ¬_found); } + template + bool lfind (const T &x, unsigned int *i = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { return as_array ().lfind (x, i, not_found, to_store); } + + void qsort () + { as_array ().qsort (); } + + HB_NODISCARD bool serialize (hb_serialize_context_t *c, unsigned items_len, bool clear = true) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + c->check_assign (len, items_len, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW); + if (unlikely (!c->extend_size (this, get_size (), clear))) return_trace (false); + return_trace (true); + } + template + HB_NODISCARD bool serialize (hb_serialize_context_t *c, Iterator items) + { + TRACE_SERIALIZE (this); + unsigned count = hb_len (items); + if (unlikely (!serialize (c, count, false))) return_trace (false); + /* TODO Umm. Just exhaust the iterator instead? Being extra + * cautious right now.. */ + for (unsigned i = 0; i < count; i++, ++items) + arrayZ[i] = *items; + return_trace (true); + } + + Type* serialize_append (hb_serialize_context_t *c) + { + TRACE_SERIALIZE (this); + len++; + if (unlikely (!len || !c->extend (this))) + { + len--; + return_trace (nullptr); + } + return_trace (&arrayZ[len - 1]); + } + + ArrayOf* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + auto *out = c->start_embed (this); + if (unlikely (!c->extend_min (out))) return_trace (nullptr); + c->check_assign (out->len, len, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW); + if (unlikely (!as_array ().copy (c))) return_trace (nullptr); + return_trace (out); + } + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + if (unlikely (!sanitize_shallow (c))) return_trace (false); + if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + unsigned int count = len; + for (unsigned int i = 0; i < count; i++) + if (unlikely (!c->dispatch (arrayZ[i], std::forward (ds)...))) + return_trace (false); + return_trace (true); + } + + bool sanitize_shallow (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (len.sanitize (c) && c->check_array (arrayZ, len)); + } + + public: + LenType len; + Type arrayZ[HB_VAR_ARRAY]; + public: + DEFINE_SIZE_ARRAY (sizeof (LenType), arrayZ); +}; +template using Array16Of = ArrayOf; +template using Array24Of = ArrayOf; +template using Array32Of = ArrayOf; +using PString = ArrayOf; + +/* Array of Offset's */ +template using Array16OfOffset16To = ArrayOf, HBUINT16>; +template using Array16OfOffset32To = ArrayOf, HBUINT16>; +template using Array32OfOffset32To = ArrayOf, HBUINT32>; + +/* Array of offsets relative to the beginning of the array itself. */ +template +struct List16OfOffsetTo : ArrayOf, HBUINT16> +{ + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= this->len)) return Null (Type); + _hb_compiler_memory_r_barrier (); + return this+this->arrayZ[i]; + } + const Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= this->len)) return Crap (Type); + _hb_compiler_memory_r_barrier (); + return this+this->arrayZ[i]; + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + struct List16OfOffsetTo *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + unsigned int count = this->len; + for (unsigned int i = 0; i < count; i++) + out->arrayZ[i].serialize_subset (c, this->arrayZ[i], this, out); + return_trace (true); + } + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + return_trace ((Array16Of>::sanitize (c, this, std::forward (ds)...))); + } +}; + +template +using List16OfOffset16To = List16OfOffsetTo; + +/* An array starting at second element. */ +template +struct HeadlessArrayOf +{ + static constexpr unsigned item_size = Type::static_size; + + HB_DELETE_CREATE_COPY_ASSIGN (HeadlessArrayOf); + + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= lenP1 || !i)) return Null (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i-1]; + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= lenP1 || !i)) return Crap (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i-1]; + } + unsigned int get_size () const + { return lenP1.static_size + get_length () * Type::static_size; } + + unsigned get_length () const { return lenP1 ? lenP1 - 1 : 0; } + + hb_array_t< Type> as_array () { return hb_array (arrayZ, get_length ()); } + hb_array_t as_array () const { return hb_array (arrayZ, get_length ()); } + + /* Iterator. */ + typedef hb_array_t iter_t; + typedef hb_array_t< Type> writer_t; + iter_t iter () const { return as_array (); } + writer_t writer () { return as_array (); } + operator iter_t () const { return iter (); } + operator writer_t () { return writer (); } + + /* Faster range-based for loop. */ + const Type *begin () const { return arrayZ; } + const Type *end () const { return arrayZ + get_length (); } + + HB_NODISCARD bool serialize (hb_serialize_context_t *c, unsigned int items_len, bool clear = true) + { + TRACE_SERIALIZE (this); + if (unlikely (!c->extend_min (this))) return_trace (false); + c->check_assign (lenP1, items_len + 1, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW); + if (unlikely (!c->extend_size (this, get_size (), clear))) return_trace (false); + return_trace (true); + } + template + HB_NODISCARD bool serialize (hb_serialize_context_t *c, Iterator items) + { + TRACE_SERIALIZE (this); + unsigned count = hb_len (items); + if (unlikely (!serialize (c, count, false))) return_trace (false); + /* TODO Umm. Just exhaust the iterator instead? Being extra + * cautious right now.. */ + for (unsigned i = 0; i < count; i++, ++items) + arrayZ[i] = *items; + return_trace (true); + } + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + if (unlikely (!sanitize_shallow (c))) return_trace (false); + if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + unsigned int count = get_length (); + for (unsigned int i = 0; i < count; i++) + if (unlikely (!c->dispatch (arrayZ[i], std::forward (ds)...))) + return_trace (false); + return_trace (true); + } + + private: + bool sanitize_shallow (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (lenP1.sanitize (c) && + (!lenP1 || c->check_array (arrayZ, lenP1 - 1))); + } + + public: + LenType lenP1; + Type arrayZ[HB_VAR_ARRAY]; + public: + DEFINE_SIZE_ARRAY (sizeof (LenType), arrayZ); +}; + +/* An array storing length-1. */ +template +struct ArrayOfM1 +{ + HB_DELETE_CREATE_COPY_ASSIGN (ArrayOfM1); + + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + if (unlikely (i > lenM1)) return Null (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i]; + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + if (unlikely (i > lenM1)) return Crap (Type); + _hb_compiler_memory_r_barrier (); + return arrayZ[i]; + } + unsigned int get_size () const + { return lenM1.static_size + (lenM1 + 1) * Type::static_size; } + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + if (unlikely (!sanitize_shallow (c))) return_trace (false); + if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + unsigned int count = lenM1 + 1; + for (unsigned int i = 0; i < count; i++) + if (unlikely (!c->dispatch (arrayZ[i], std::forward (ds)...))) + return_trace (false); + return_trace (true); + } + + private: + bool sanitize_shallow (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (lenM1.sanitize (c) && + (c->check_array (arrayZ, lenM1 + 1))); + } + + public: + LenType lenM1; + Type arrayZ[HB_VAR_ARRAY]; + public: + DEFINE_SIZE_ARRAY (sizeof (LenType), arrayZ); +}; + +/* An array with sorted elements. Supports binary searching. */ +template +struct SortedArrayOf : ArrayOf +{ + hb_sorted_array_t< Type> as_array () { return hb_sorted_array (this->arrayZ, this->len); } + hb_sorted_array_t as_array () const { return hb_sorted_array (this->arrayZ, this->len); } + + /* Iterator. */ + typedef hb_sorted_array_t iter_t; + typedef hb_sorted_array_t< Type> writer_t; + iter_t iter () const { return as_array (); } + writer_t writer () { return as_array (); } + operator iter_t () const { return iter (); } + operator writer_t () { return writer (); } + + /* Faster range-based for loop. */ + const Type *begin () const { return this->arrayZ; } + const Type *end () const { return this->arrayZ + this->len; } + + bool serialize (hb_serialize_context_t *c, unsigned int items_len) + { + TRACE_SERIALIZE (this); + bool ret = ArrayOf::serialize (c, items_len); + return_trace (ret); + } + template + bool serialize (hb_serialize_context_t *c, Iterator items) + { + TRACE_SERIALIZE (this); + bool ret = ArrayOf::serialize (c, items); + return_trace (ret); + } + + template + Type &bsearch (const T &x, Type ¬_found = Crap (Type)) + { return *as_array ().bsearch (x, ¬_found); } + template + const Type &bsearch (const T &x, const Type ¬_found = Null (Type)) const + { return *as_array ().bsearch (x, ¬_found); } + template + bool bfind (const T &x, unsigned int *i = nullptr, + hb_not_found_t not_found = HB_NOT_FOUND_DONT_STORE, + unsigned int to_store = (unsigned int) -1) const + { return as_array ().bfind (x, i, not_found, to_store); } +}; + +template using SortedArray16Of = SortedArrayOf; +template using SortedArray24Of = SortedArrayOf; +template using SortedArray32Of = SortedArrayOf; + +/* + * Binary-search arrays + */ + +template +struct BinSearchHeader +{ + operator uint32_t () const { return len; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + BinSearchHeader& operator = (unsigned int v) + { + len = v; + assert (len == v); + entrySelector = hb_max (1u, hb_bit_storage (v)) - 1; + searchRange = 16 * (1u << entrySelector); + rangeShift = v * 16 > searchRange + ? 16 * v - searchRange + : 0; + return *this; + } + + protected: + LenType len; + LenType searchRange; + LenType entrySelector; + LenType rangeShift; + + public: + DEFINE_SIZE_STATIC (8); +}; + +template +using BinSearchArrayOf = SortedArrayOf>; + + +struct VarSizedBinSearchHeader +{ + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT16 unitSize; /* Size of a lookup unit for this search in bytes. */ + HBUINT16 nUnits; /* Number of units of the preceding size to be searched. */ + HBUINT16 searchRange; /* The value of unitSize times the largest power of 2 + * that is less than or equal to the value of nUnits. */ + HBUINT16 entrySelector; /* The log base 2 of the largest power of 2 less than + * or equal to the value of nUnits. */ + HBUINT16 rangeShift; /* The value of unitSize times the difference of the + * value of nUnits minus the largest power of 2 less + * than or equal to the value of nUnits. */ + public: + DEFINE_SIZE_STATIC (10); +}; + +template +struct VarSizedBinSearchArrayOf +{ + static constexpr unsigned item_size = Type::static_size; + + HB_DELETE_CREATE_COPY_ASSIGN (VarSizedBinSearchArrayOf); + + bool last_is_terminator () const + { + if (unlikely (!header.nUnits)) return false; + + /* Gah. + * + * "The number of termination values that need to be included is table-specific. + * The value that indicates binary search termination is 0xFFFF." */ + const HBUINT16 *words = &StructAtOffset (&bytesZ, (header.nUnits - 1) * header.unitSize); + unsigned int count = Type::TerminationWordCount; + for (unsigned int i = 0; i < count; i++) + if (words[i] != 0xFFFFu) + return false; + return true; + } + + const Type& operator [] (int i_) const + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= get_length ())) return Null (Type); + _hb_compiler_memory_r_barrier (); + return StructAtOffset (&bytesZ, i * header.unitSize); + } + Type& operator [] (int i_) + { + unsigned int i = (unsigned int) i_; + if (unlikely (i >= get_length ())) return Crap (Type); + _hb_compiler_memory_r_barrier (); + return StructAtOffset (&bytesZ, i * header.unitSize); + } + unsigned int get_length () const + { return header.nUnits - last_is_terminator (); } + unsigned int get_size () const + { return header.static_size + header.nUnits * header.unitSize; } + + template + bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const + { + TRACE_SANITIZE (this); + if (unlikely (!sanitize_shallow (c))) return_trace (false); + if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + unsigned int count = get_length (); + for (unsigned int i = 0; i < count; i++) + if (unlikely (!(*this)[i].sanitize (c, std::forward (ds)...))) + return_trace (false); + return_trace (true); + } + + template + const Type *bsearch (const T &key) const + { + unsigned pos; + return hb_bsearch_impl (&pos, + key, + (const void *) bytesZ, + get_length (), + header.unitSize, + _hb_cmp_method) + ? (const Type *) (((const char *) &bytesZ) + (pos * header.unitSize)) + : nullptr; + } + + private: + bool sanitize_shallow (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (header.sanitize (c) && + Type::static_size <= header.unitSize && + c->check_range (bytesZ.arrayZ, + header.nUnits, + header.unitSize)); + } + + protected: + VarSizedBinSearchHeader header; + UnsizedArrayOf bytesZ; + public: + DEFINE_SIZE_ARRAY (10, bytesZ); +}; + + +} /* namespace OT */ + + +#endif /* HB_OPEN_TYPE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-cff-common.hh b/gfx/harfbuzz/src/hb-ot-cff-common.hh new file mode 100644 index 0000000000..f22824fc69 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff-common.hh @@ -0,0 +1,516 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ +#ifndef HB_OT_CFF_COMMON_HH +#define HB_OT_CFF_COMMON_HH + +#include "hb-open-type.hh" +#include "hb-bimap.hh" +#include "hb-ot-layout-common.hh" +#include "hb-cff-interp-dict-common.hh" +#include "hb-subset-plan.hh" + +namespace CFF { + +using namespace OT; + +#define CFF_UNDEF_CODE 0xFFFFFFFF + +using objidx_t = hb_serialize_context_t::objidx_t; +using whence_t = hb_serialize_context_t::whence_t; + +/* utility macro */ +template +static inline const Type& StructAtOffsetOrNull (const void *P, unsigned int offset) +{ return offset ? StructAtOffset (P, offset) : Null (Type); } + +struct code_pair_t +{ + hb_codepoint_t code; + hb_codepoint_t glyph; +}; + +using str_buff_t = hb_vector_t; +using str_buff_vec_t = hb_vector_t; + +/* CFF INDEX */ +template +struct CFFIndex +{ + unsigned int offset_array_size () const + { return offSize * (count + 1); } + + CFFIndex *copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + unsigned int size = get_size (); + CFFIndex *out = c->allocate_size (size, false); + if (likely (out)) + hb_memcpy (out, this, size); + return_trace (out); + } + + template + bool serialize (hb_serialize_context_t *c, + const Iterable &iterable) + { + TRACE_SERIALIZE (this); + auto it = hb_iter (iterable); + serialize_header(c, + it | hb_map (hb_iter) | hb_map (hb_len)); + for (const auto &_ : +it) + hb_iter (_).copy (c); + return_trace (true); + } + + template + bool serialize_header (hb_serialize_context_t *c, + Iterator it) + { + TRACE_SERIALIZE (this); + + unsigned total = + it | hb_reduce (hb_add, 0); + unsigned off_size = (hb_bit_storage (total + 1) + 7) / 8; + + /* serialize CFFIndex header */ + if (unlikely (!c->extend_min (this))) return_trace (false); + this->count = it.len (); + if (!this->count) return_trace (true); + if (unlikely (!c->extend (this->offSize))) return_trace (false); + this->offSize = off_size; + if (unlikely (!c->allocate_size (off_size * (this->count + 1), false))) + return_trace (false); + + /* serialize indices */ + unsigned int offset = 1; + unsigned int i = 0; + for (unsigned _ : +it) + { + set_offset_at (i++, offset); + offset += _; + } + set_offset_at (i, offset); + + return_trace (true); + } + + template + static unsigned total_size (const Iterable &iterable) + { + auto it = + hb_iter (iterable) | hb_map (hb_iter) | hb_map (hb_len); + if (!it) return 0; + + unsigned total = + it | hb_reduce (hb_add, 0); + unsigned off_size = (hb_bit_storage (total + 1) + 7) / 8; + + return min_size + HBUINT8::static_size + (hb_len (it) + 1) * off_size + total; + } + + void set_offset_at (unsigned int index, unsigned int offset) + { + assert (index <= count); + HBUINT8 *p = offsets + offSize * index + offSize; + unsigned int size = offSize; + for (; size; size--) + { + --p; + *p = offset & 0xFF; + offset >>= 8; + } + } + + private: + unsigned int offset_at (unsigned int index) const + { + assert (index <= count); + + unsigned int size = offSize; + const HBUINT8 *p = offsets + size * index; + switch (size) + { + case 1: return * (HBUINT8 *) p; + case 2: return * (HBUINT16 *) p; + case 3: return * (HBUINT24 *) p; + case 4: return * (HBUINT32 *) p; + default: return 0; + } + } + + unsigned int length_at (unsigned int index) const + { + unsigned offset0 = offset_at (index); + unsigned offset1 = offset_at (index + 1); + if (unlikely (offset1 < offset0 || offset1 > offset_at (count))) + return 0; + return offset1 - offset0; + } + + const unsigned char *data_base () const + { return (const unsigned char *) this + min_size + offSize.static_size + offset_array_size (); } + public: + + hb_ubytes_t operator [] (unsigned int index) const + { + if (unlikely (index >= count)) return hb_ubytes_t (); + _hb_compiler_memory_r_barrier (); + unsigned length = length_at (index); + if (unlikely (!length)) return hb_ubytes_t (); + return hb_ubytes_t (data_base () + offset_at (index) - 1, length); + } + + unsigned int get_size () const + { + if (count) + return min_size + offSize.static_size + offset_array_size () + (offset_at (count) - 1); + return min_size; /* empty CFFIndex contains count only */ + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (count == 0 || /* empty INDEX */ + (count < count + 1u && + c->check_struct (&offSize) && offSize >= 1 && offSize <= 4 && + c->check_array (offsets, offSize, count + 1u) && + c->check_array ((const HBUINT8*) data_base (), 1, offset_at (count) - 1))))); + } + + public: + COUNT count; /* Number of object data. Note there are (count+1) offsets */ + private: + HBUINT8 offSize; /* The byte size of each offset in the offsets array. */ + HBUINT8 offsets[HB_VAR_ARRAY]; + /* The array of (count + 1) offsets into objects array (1-base). */ + /* HBUINT8 data[HB_VAR_ARRAY]; Object data */ + public: + DEFINE_SIZE_MIN (COUNT::static_size); +}; + +template +struct CFFIndexOf : CFFIndex +{ + template + bool serialize (hb_serialize_context_t *c, + unsigned int offSize_, + const DATA *dataArray, + unsigned int dataArrayLen, + const hb_vector_t &dataSizeArray, + const PARAM1 ¶m1, + const PARAM2 ¶m2) + { + TRACE_SERIALIZE (this); + /* serialize CFFIndex header */ + if (unlikely (!c->extend_min (this))) return_trace (false); + this->count = dataArrayLen; + this->offSize = offSize_; + if (unlikely (!c->allocate_size (offSize_ * (dataArrayLen + 1), false))) + return_trace (false); + + /* serialize indices */ + unsigned int offset = 1; + unsigned int i = 0; + for (; i < dataArrayLen; i++) + { + this->set_offset_at (i, offset); + offset += dataSizeArray[i]; + } + this->set_offset_at (i, offset); + + /* serialize data */ + for (unsigned int i = 0; i < dataArrayLen; i++) + { + TYPE *dest = c->start_embed (); + if (unlikely (!dest || !dest->serialize (c, dataArray[i], param1, param2))) + return_trace (false); + } + return_trace (true); + } +}; + +/* Top Dict, Font Dict, Private Dict */ +struct Dict : UnsizedByteStr +{ + template + bool serialize (hb_serialize_context_t *c, + const DICTVAL &dictval, + OP_SERIALIZER& opszr, + Ts&&... ds) + { + TRACE_SERIALIZE (this); + for (unsigned int i = 0; i < dictval.get_count (); i++) + if (unlikely (!opszr.serialize (c, dictval[i], std::forward (ds)...))) + return_trace (false); + + return_trace (true); + } + + template + static bool serialize_int_op (hb_serialize_context_t *c, op_code_t op, V value, op_code_t intOp) + { + if (unlikely ((!serialize_int (c, intOp, value)))) + return false; + + TRACE_SERIALIZE (this); + /* serialize the opcode */ + HBUINT8 *p = c->allocate_size (OpCode_Size (op), false); + if (unlikely (!p)) return_trace (false); + if (Is_OpCode_ESC (op)) + { + *p = OpCode_escape; + op = Unmake_OpCode_ESC (op); + p++; + } + *p = op; + return_trace (true); + } + + template + static bool serialize_int4_op (hb_serialize_context_t *c, op_code_t op, V value) + { return serialize_int_op (c, op, value, OpCode_longintdict); } + + template + static bool serialize_int2_op (hb_serialize_context_t *c, op_code_t op, V value) + { return serialize_int_op (c, op, value, OpCode_shortint); } + + template + static bool serialize_link_op (hb_serialize_context_t *c, op_code_t op, objidx_t link, whence_t whence) + { + T &ofs = *(T *) (c->head + OpCode_Size (int_op)); + if (unlikely (!serialize_int_op (c, op, 0, int_op))) return false; + c->add_link (ofs, link, whence); + return true; + } + + static bool serialize_link4_op (hb_serialize_context_t *c, op_code_t op, objidx_t link, whence_t whence = whence_t::Head) + { return serialize_link_op (c, op, link, whence); } + + static bool serialize_link2_op (hb_serialize_context_t *c, op_code_t op, objidx_t link, whence_t whence = whence_t::Head) + { return serialize_link_op (c, op, link, whence); } +}; + +struct TopDict : Dict {}; +struct FontDict : Dict {}; +struct PrivateDict : Dict {}; + +struct table_info_t +{ + void init () { offset = size = 0; link = 0; } + + unsigned int offset; + unsigned int size; + objidx_t link; +}; + +template +struct FDArray : CFFIndexOf +{ + template + bool serialize (hb_serialize_context_t *c, + Iterator it, + OP_SERIALIZER& opszr) + { + TRACE_SERIALIZE (this); + + /* serialize INDEX data */ + hb_vector_t sizes; + c->push (); + + it + | hb_map ([&] (const hb_pair_t &_) + { + FontDict *dict = c->start_embed (); + dict->serialize (c, _.first, opszr, _.second); + return c->head - (const char*)dict; + }) + | hb_sink (sizes) + ; + c->pop_pack (false); + + /* serialize INDEX header */ + return_trace (CFFIndex::serialize_header (c, hb_iter (sizes))); + } +}; + +/* FDSelect */ +struct FDSelect0 { + bool sanitize (hb_sanitize_context_t *c, unsigned int fdcount) const + { + TRACE_SANITIZE (this); + if (unlikely (!(c->check_struct (this)))) + return_trace (false); + if (unlikely (!c->check_array (fds, c->get_num_glyphs ()))) + return_trace (false); + + return_trace (true); + } + + hb_codepoint_t get_fd (hb_codepoint_t glyph) const + { return (hb_codepoint_t) fds[glyph]; } + + unsigned int get_size (unsigned int num_glyphs) const + { return HBUINT8::static_size * num_glyphs; } + + HBUINT8 fds[HB_VAR_ARRAY]; + + DEFINE_SIZE_MIN (0); +}; + +template +struct FDSelect3_4_Range +{ + bool sanitize (hb_sanitize_context_t *c, const void * /*nullptr*/, unsigned int fdcount) const + { + TRACE_SANITIZE (this); + return_trace (first < c->get_num_glyphs () && (fd < fdcount)); + } + + GID_TYPE first; + FD_TYPE fd; + public: + DEFINE_SIZE_STATIC (GID_TYPE::static_size + FD_TYPE::static_size); +}; + +template +struct FDSelect3_4 +{ + unsigned int get_size () const + { return GID_TYPE::static_size * 2 + ranges.get_size (); } + + bool sanitize (hb_sanitize_context_t *c, unsigned int fdcount) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this) || !ranges.sanitize (c, nullptr, fdcount) || + (nRanges () == 0) || ranges[0].first != 0)) + return_trace (false); + + for (unsigned int i = 1; i < nRanges (); i++) + if (unlikely (ranges[i - 1].first >= ranges[i].first)) + return_trace (false); + + if (unlikely (!sentinel().sanitize (c) || (sentinel() != c->get_num_glyphs ()))) + return_trace (false); + + return_trace (true); + } + + static int _cmp_range (const void *_key, const void *_item) + { + hb_codepoint_t glyph = * (hb_codepoint_t *) _key; + FDSelect3_4_Range *range = (FDSelect3_4_Range *) _item; + + if (glyph < range[0].first) return -1; + if (glyph < range[1].first) return 0; + return +1; + } + + hb_codepoint_t get_fd (hb_codepoint_t glyph) const + { + auto *range = hb_bsearch (glyph, &ranges[0], nRanges () - 1, sizeof (ranges[0]), _cmp_range); + return range ? range->fd : ranges[nRanges () - 1].fd; + } + + GID_TYPE &nRanges () { return ranges.len; } + GID_TYPE nRanges () const { return ranges.len; } + GID_TYPE &sentinel () { return StructAfter (ranges[nRanges () - 1]); } + const GID_TYPE &sentinel () const { return StructAfter (ranges[nRanges () - 1]); } + + ArrayOf, GID_TYPE> ranges; + /* GID_TYPE sentinel */ + + DEFINE_SIZE_ARRAY (GID_TYPE::static_size, ranges); +}; + +typedef FDSelect3_4 FDSelect3; +typedef FDSelect3_4_Range FDSelect3_Range; + +struct FDSelect +{ + bool serialize (hb_serialize_context_t *c, const FDSelect &src, unsigned int num_glyphs) + { + TRACE_SERIALIZE (this); + unsigned int size = src.get_size (num_glyphs); + FDSelect *dest = c->allocate_size (size, false); + if (unlikely (!dest)) return_trace (false); + hb_memcpy (dest, &src, size); + return_trace (true); + } + + unsigned int get_size (unsigned int num_glyphs) const + { + switch (format) + { + case 0: return format.static_size + u.format0.get_size (num_glyphs); + case 3: return format.static_size + u.format3.get_size (); + default:return 0; + } + } + + hb_codepoint_t get_fd (hb_codepoint_t glyph) const + { + if (this == &Null (FDSelect)) return 0; + + switch (format) + { + case 0: return u.format0.get_fd (glyph); + case 3: return u.format3.get_fd (glyph); + default:return 0; + } + } + + bool sanitize (hb_sanitize_context_t *c, unsigned int fdcount) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + switch (format) + { + case 0: return_trace (u.format0.sanitize (c, fdcount)); + case 3: return_trace (u.format3.sanitize (c, fdcount)); + default:return_trace (false); + } + } + + HBUINT8 format; + union { + FDSelect0 format0; + FDSelect3 format3; + } u; + public: + DEFINE_SIZE_MIN (1); +}; + +template +struct Subrs : CFFIndex +{ + typedef COUNT count_type; + typedef CFFIndex SUPER; +}; + +} /* namespace CFF */ + +#endif /* HB_OT_CFF_COMMON_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-cff1-std-str.hh b/gfx/harfbuzz/src/hb-ot-cff1-std-str.hh new file mode 100644 index 0000000000..65d56ae18b --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff1-std-str.hh @@ -0,0 +1,425 @@ +/* + * Copyright © 2019 Adobe, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_OT_CFF1_STD_STR_HH +#if 0 /* Make checks happy. */ +#define HB_OT_CFF1_STD_STR_HH +#include "hb.hh" +#endif + +_S(".notdef") +_S("space") +_S("exclam") +_S("quotedbl") +_S("numbersign") +_S("dollar") +_S("percent") +_S("ampersand") +_S("quoteright") +_S("parenleft") +_S("parenright") +_S("asterisk") +_S("plus") +_S("comma") +_S("hyphen") +_S("period") +_S("slash") +_S("zero") +_S("one") +_S("two") +_S("three") +_S("four") +_S("five") +_S("six") +_S("seven") +_S("eight") +_S("nine") +_S("colon") +_S("semicolon") +_S("less") +_S("equal") +_S("greater") +_S("question") +_S("at") +_S("A") +_S("B") +_S("C") +_S("D") +_S("E") +_S("F") +_S("G") +_S("H") +_S("I") +_S("J") +_S("K") +_S("L") +_S("M") +_S("N") +_S("O") +_S("P") +_S("Q") +_S("R") +_S("S") +_S("T") +_S("U") +_S("V") +_S("W") +_S("X") +_S("Y") +_S("Z") +_S("bracketleft") +_S("backslash") +_S("bracketright") +_S("asciicircum") +_S("underscore") +_S("quoteleft") +_S("a") +_S("b") +_S("c") +_S("d") +_S("e") +_S("f") +_S("g") +_S("h") +_S("i") +_S("j") +_S("k") +_S("l") +_S("m") +_S("n") +_S("o") +_S("p") +_S("q") +_S("r") +_S("s") +_S("t") +_S("u") +_S("v") +_S("w") +_S("x") +_S("y") +_S("z") +_S("braceleft") +_S("bar") +_S("braceright") +_S("asciitilde") +_S("exclamdown") +_S("cent") +_S("sterling") +_S("fraction") +_S("yen") +_S("florin") +_S("section") +_S("currency") +_S("quotesingle") +_S("quotedblleft") +_S("guillemotleft") +_S("guilsinglleft") +_S("guilsinglright") +_S("fi") +_S("fl") +_S("endash") +_S("dagger") +_S("daggerdbl") +_S("periodcentered") +_S("paragraph") +_S("bullet") +_S("quotesinglbase") +_S("quotedblbase") +_S("quotedblright") +_S("guillemotright") +_S("ellipsis") +_S("perthousand") +_S("questiondown") +_S("grave") +_S("acute") +_S("circumflex") +_S("tilde") +_S("macron") +_S("breve") +_S("dotaccent") +_S("dieresis") +_S("ring") +_S("cedilla") +_S("hungarumlaut") +_S("ogonek") +_S("caron") +_S("emdash") +_S("AE") +_S("ordfeminine") +_S("Lslash") +_S("Oslash") +_S("OE") +_S("ordmasculine") +_S("ae") +_S("dotlessi") +_S("lslash") +_S("oslash") +_S("oe") +_S("germandbls") +_S("onesuperior") +_S("logicalnot") +_S("mu") +_S("trademark") +_S("Eth") +_S("onehalf") +_S("plusminus") +_S("Thorn") +_S("onequarter") +_S("divide") +_S("brokenbar") +_S("degree") +_S("thorn") +_S("threequarters") +_S("twosuperior") +_S("registered") +_S("minus") +_S("eth") +_S("multiply") +_S("threesuperior") +_S("copyright") +_S("Aacute") +_S("Acircumflex") +_S("Adieresis") +_S("Agrave") +_S("Aring") +_S("Atilde") +_S("Ccedilla") +_S("Eacute") +_S("Ecircumflex") +_S("Edieresis") +_S("Egrave") +_S("Iacute") +_S("Icircumflex") +_S("Idieresis") +_S("Igrave") +_S("Ntilde") +_S("Oacute") +_S("Ocircumflex") +_S("Odieresis") +_S("Ograve") +_S("Otilde") +_S("Scaron") +_S("Uacute") +_S("Ucircumflex") +_S("Udieresis") +_S("Ugrave") +_S("Yacute") +_S("Ydieresis") +_S("Zcaron") +_S("aacute") +_S("acircumflex") +_S("adieresis") +_S("agrave") +_S("aring") +_S("atilde") +_S("ccedilla") +_S("eacute") +_S("ecircumflex") +_S("edieresis") +_S("egrave") +_S("iacute") +_S("icircumflex") +_S("idieresis") +_S("igrave") +_S("ntilde") +_S("oacute") +_S("ocircumflex") +_S("odieresis") +_S("ograve") +_S("otilde") +_S("scaron") +_S("uacute") +_S("ucircumflex") +_S("udieresis") +_S("ugrave") +_S("yacute") +_S("ydieresis") +_S("zcaron") +_S("exclamsmall") +_S("Hungarumlautsmall") +_S("dollaroldstyle") +_S("dollarsuperior") +_S("ampersandsmall") +_S("Acutesmall") +_S("parenleftsuperior") +_S("parenrightsuperior") +_S("twodotenleader") +_S("onedotenleader") +_S("zerooldstyle") +_S("oneoldstyle") +_S("twooldstyle") +_S("threeoldstyle") +_S("fouroldstyle") +_S("fiveoldstyle") +_S("sixoldstyle") +_S("sevenoldstyle") +_S("eightoldstyle") +_S("nineoldstyle") +_S("commasuperior") +_S("threequartersemdash") +_S("periodsuperior") +_S("questionsmall") +_S("asuperior") +_S("bsuperior") +_S("centsuperior") +_S("dsuperior") +_S("esuperior") +_S("isuperior") +_S("lsuperior") +_S("msuperior") +_S("nsuperior") +_S("osuperior") +_S("rsuperior") +_S("ssuperior") +_S("tsuperior") +_S("ff") +_S("ffi") +_S("ffl") +_S("parenleftinferior") +_S("parenrightinferior") +_S("Circumflexsmall") +_S("hyphensuperior") +_S("Gravesmall") +_S("Asmall") +_S("Bsmall") +_S("Csmall") +_S("Dsmall") +_S("Esmall") +_S("Fsmall") +_S("Gsmall") +_S("Hsmall") +_S("Ismall") +_S("Jsmall") +_S("Ksmall") +_S("Lsmall") +_S("Msmall") +_S("Nsmall") +_S("Osmall") +_S("Psmall") +_S("Qsmall") +_S("Rsmall") +_S("Ssmall") +_S("Tsmall") +_S("Usmall") +_S("Vsmall") +_S("Wsmall") +_S("Xsmall") +_S("Ysmall") +_S("Zsmall") +_S("colonmonetary") +_S("onefitted") +_S("rupiah") +_S("Tildesmall") +_S("exclamdownsmall") +_S("centoldstyle") +_S("Lslashsmall") +_S("Scaronsmall") +_S("Zcaronsmall") +_S("Dieresissmall") +_S("Brevesmall") +_S("Caronsmall") +_S("Dotaccentsmall") +_S("Macronsmall") +_S("figuredash") +_S("hypheninferior") +_S("Ogoneksmall") +_S("Ringsmall") +_S("Cedillasmall") +_S("questiondownsmall") +_S("oneeighth") +_S("threeeighths") +_S("fiveeighths") +_S("seveneighths") +_S("onethird") +_S("twothirds") +_S("zerosuperior") +_S("foursuperior") +_S("fivesuperior") +_S("sixsuperior") +_S("sevensuperior") +_S("eightsuperior") +_S("ninesuperior") +_S("zeroinferior") +_S("oneinferior") +_S("twoinferior") +_S("threeinferior") +_S("fourinferior") +_S("fiveinferior") +_S("sixinferior") +_S("seveninferior") +_S("eightinferior") +_S("nineinferior") +_S("centinferior") +_S("dollarinferior") +_S("periodinferior") +_S("commainferior") +_S("Agravesmall") +_S("Aacutesmall") +_S("Acircumflexsmall") +_S("Atildesmall") +_S("Adieresissmall") +_S("Aringsmall") +_S("AEsmall") +_S("Ccedillasmall") +_S("Egravesmall") +_S("Eacutesmall") +_S("Ecircumflexsmall") +_S("Edieresissmall") +_S("Igravesmall") +_S("Iacutesmall") +_S("Icircumflexsmall") +_S("Idieresissmall") +_S("Ethsmall") +_S("Ntildesmall") +_S("Ogravesmall") +_S("Oacutesmall") +_S("Ocircumflexsmall") +_S("Otildesmall") +_S("Odieresissmall") +_S("OEsmall") +_S("Oslashsmall") +_S("Ugravesmall") +_S("Uacutesmall") +_S("Ucircumflexsmall") +_S("Udieresissmall") +_S("Yacutesmall") +_S("Thornsmall") +_S("Ydieresissmall") +_S("001.000") +_S("001.001") +_S("001.002") +_S("001.003") +_S("Black") +_S("Bold") +_S("Book") +_S("Light") +_S("Medium") +_S("Regular") +_S("Roman") +_S("Semibold") + +#endif /* HB_OT_CFF1_STD_STR_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-cff1-table.cc b/gfx/harfbuzz/src/hb-ot-cff1-table.cc new file mode 100644 index 0000000000..5040c74623 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff1-table.cc @@ -0,0 +1,620 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#include "hb.hh" + +#ifndef HB_NO_CFF + +#include "hb-draw.hh" +#include "hb-algs.hh" +#include "hb-ot-cff1-table.hh" +#include "hb-cff1-interp-cs.hh" + +using namespace CFF; + +struct sid_to_gid_t +{ + uint16_t sid; + uint8_t gid; + + int cmp (uint16_t a) const + { + if (a == sid) return 0; + return (a < sid) ? -1 : 1; + } +}; + +/* SID to code */ +static const uint8_t standard_encoding_to_code [] = +{ + 0, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, + 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, + 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, + 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, + 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, + 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, + 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 177, + 178, 179, 180, 182, 183, 184, 185, 186, 187, 188, 189, 191, 193, 194, 195, 196, + 197, 198, 199, 200, 202, 203, 205, 206, 207, 208, 225, 227, 232, 233, 234, 235, + 241, 245, 248, 249, 250, 251 +}; + +/* SID to code */ +static const uint8_t expert_encoding_to_code [] = +{ + 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 45, 46, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 58, 59, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, 87, 88, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 201, 0, 0, 0, 0, 189, 0, 0, 188, 0, + 0, 0, 0, 190, 202, 0, 0, 0, 0, 203, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 48, + 49, 50, 51, 52, 53, 54, 55, 56, 57, 60, 61, 62, 63, 65, 66, 67, + 68, 69, 73, 76, 77, 78, 79, 82, 83, 84, 86, 89, 90, 91, 93, 94, + 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, + 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, + 161, 162, 163, 166, 167, 168, 169, 170, 172, 175, 178, 179, 182, 183, 184, 191, + 192, 193, 194, 195, 196, 197, 200, 204, 205, 206, 207, 208, 209, 210, 211, 212, + 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, + 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, + 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 +}; + +/* glyph ID to SID */ +static const uint16_t expert_charset_to_sid [] = +{ + 0, 1, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 13, 14, 15, 99, + 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 27, 28, 249, 250, 251, 252, + 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, + 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, + 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, + 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, + 315, 316, 317, 318, 158, 155, 163, 319, 320, 321, 322, 323, 324, 325, 326, 150, + 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, + 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, + 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, + 373, 374, 375, 376, 377, 378 +}; + +/* glyph ID to SID */ +static const uint16_t expert_subset_charset_to_sid [] = +{ + 0, 1, 231, 232, 235, 236, 237, 238, 13, 14, 15, 99, 239, 240, 241, 242, + 243, 244, 245, 246, 247, 248, 27, 28, 249, 250, 251, 253, 254, 255, 256, 257, + 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, 267, 268, 269, 270, 272, + 300, 301, 302, 305, 314, 315, 158, 155, 163, 320, 321, 322, 323, 324, 325, 326, + 150, 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, + 340, 341, 342, 343, 344, 345, 346 +}; + +/* SID to glyph ID */ +static const sid_to_gid_t expert_charset_sid_to_gid [] = +{ + { 1, 1 }, { 13, 12 }, { 14, 13 }, { 15, 14 }, + { 27, 26 }, { 28, 27 }, { 99, 15 }, { 109, 46 }, + { 110, 47 }, { 150, 111 }, { 155, 101 }, { 158, 100 }, + { 163, 102 }, { 164, 112 }, { 169, 113 }, { 229, 2 }, + { 230, 3 }, { 231, 4 }, { 232, 5 }, { 233, 6 }, + { 234, 7 }, { 235, 8 }, { 236, 9 }, { 237, 10 }, + { 238, 11 }, { 239, 16 }, { 240, 17 }, { 241, 18 }, + { 242, 19 }, { 243, 20 }, { 244, 21 }, { 245, 22 }, + { 246, 23 }, { 247, 24 }, { 248, 25 }, { 249, 28 }, + { 250, 29 }, { 251, 30 }, { 252, 31 }, { 253, 32 }, + { 254, 33 }, { 255, 34 }, { 256, 35 }, { 257, 36 }, + { 258, 37 }, { 259, 38 }, { 260, 39 }, { 261, 40 }, + { 262, 41 }, { 263, 42 }, { 264, 43 }, { 265, 44 }, + { 266, 45 }, { 267, 48 }, { 268, 49 }, { 269, 50 }, + { 270, 51 }, { 271, 52 }, { 272, 53 }, { 273, 54 }, + { 274, 55 }, { 275, 56 }, { 276, 57 }, { 277, 58 }, + { 278, 59 }, { 279, 60 }, { 280, 61 }, { 281, 62 }, + { 282, 63 }, { 283, 64 }, { 284, 65 }, { 285, 66 }, + { 286, 67 }, { 287, 68 }, { 288, 69 }, { 289, 70 }, + { 290, 71 }, { 291, 72 }, { 292, 73 }, { 293, 74 }, + { 294, 75 }, { 295, 76 }, { 296, 77 }, { 297, 78 }, + { 298, 79 }, { 299, 80 }, { 300, 81 }, { 301, 82 }, + { 302, 83 }, { 303, 84 }, { 304, 85 }, { 305, 86 }, + { 306, 87 }, { 307, 88 }, { 308, 89 }, { 309, 90 }, + { 310, 91 }, { 311, 92 }, { 312, 93 }, { 313, 94 }, + { 314, 95 }, { 315, 96 }, { 316, 97 }, { 317, 98 }, + { 318, 99 }, { 319, 103 }, { 320, 104 }, { 321, 105 }, + { 322, 106 }, { 323, 107 }, { 324, 108 }, { 325, 109 }, + { 326, 110 }, { 327, 114 }, { 328, 115 }, { 329, 116 }, + { 330, 117 }, { 331, 118 }, { 332, 119 }, { 333, 120 }, + { 334, 121 }, { 335, 122 }, { 336, 123 }, { 337, 124 }, + { 338, 125 }, { 339, 126 }, { 340, 127 }, { 341, 128 }, + { 342, 129 }, { 343, 130 }, { 344, 131 }, { 345, 132 }, + { 346, 133 }, { 347, 134 }, { 348, 135 }, { 349, 136 }, + { 350, 137 }, { 351, 138 }, { 352, 139 }, { 353, 140 }, + { 354, 141 }, { 355, 142 }, { 356, 143 }, { 357, 144 }, + { 358, 145 }, { 359, 146 }, { 360, 147 }, { 361, 148 }, + { 362, 149 }, { 363, 150 }, { 364, 151 }, { 365, 152 }, + { 366, 153 }, { 367, 154 }, { 368, 155 }, { 369, 156 }, + { 370, 157 }, { 371, 158 }, { 372, 159 }, { 373, 160 }, + { 374, 161 }, { 375, 162 }, { 376, 163 }, { 377, 164 }, + { 378, 165 } +}; + +/* SID to glyph ID */ +static const sid_to_gid_t expert_subset_charset_sid_to_gid [] = +{ + { 1, 1 }, { 13, 8 }, { 14, 9 }, { 15, 10 }, + { 27, 22 }, { 28, 23 }, { 99, 11 }, { 109, 41 }, + { 110, 42 }, { 150, 64 }, { 155, 55 }, { 158, 54 }, + { 163, 56 }, { 164, 65 }, { 169, 66 }, { 231, 2 }, + { 232, 3 }, { 235, 4 }, { 236, 5 }, { 237, 6 }, + { 238, 7 }, { 239, 12 }, { 240, 13 }, { 241, 14 }, + { 242, 15 }, { 243, 16 }, { 244, 17 }, { 245, 18 }, + { 246, 19 }, { 247, 20 }, { 248, 21 }, { 249, 24 }, + { 250, 25 }, { 251, 26 }, { 253, 27 }, { 254, 28 }, + { 255, 29 }, { 256, 30 }, { 257, 31 }, { 258, 32 }, + { 259, 33 }, { 260, 34 }, { 261, 35 }, { 262, 36 }, + { 263, 37 }, { 264, 38 }, { 265, 39 }, { 266, 40 }, + { 267, 43 }, { 268, 44 }, { 269, 45 }, { 270, 46 }, + { 272, 47 }, { 300, 48 }, { 301, 49 }, { 302, 50 }, + { 305, 51 }, { 314, 52 }, { 315, 53 }, { 320, 57 }, + { 321, 58 }, { 322, 59 }, { 323, 60 }, { 324, 61 }, + { 325, 62 }, { 326, 63 }, { 327, 67 }, { 328, 68 }, + { 329, 69 }, { 330, 70 }, { 331, 71 }, { 332, 72 }, + { 333, 73 }, { 334, 74 }, { 335, 75 }, { 336, 76 }, + { 337, 77 }, { 338, 78 }, { 339, 79 }, { 340, 80 }, + { 341, 81 }, { 342, 82 }, { 343, 83 }, { 344, 84 }, + { 345, 85 }, { 346, 86 } +}; + +/* code to SID */ +static const uint8_t standard_encoding_to_sid [] = +{ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, + 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, + 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, + 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, + 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, + 0, 111, 112, 113, 114, 0, 115, 116, 117, 118, 119, 120, 121, 122, 0, 123, + 0, 124, 125, 126, 127, 128, 129, 130, 131, 0, 132, 133, 0, 134, 135, 136, + 137, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 138, 0, 139, 0, 0, 0, 0, 140, 141, 142, 143, 0, 0, 0, 0, + 0, 144, 0, 0, 0, 145, 0, 0, 146, 147, 148, 149, 0, 0, 0, 0 +}; + +hb_codepoint_t OT::cff1::lookup_standard_encoding_for_code (hb_codepoint_t sid) +{ + if (sid < ARRAY_LENGTH (standard_encoding_to_code)) + return (hb_codepoint_t)standard_encoding_to_code[sid]; + else + return 0; +} + +hb_codepoint_t OT::cff1::lookup_expert_encoding_for_code (hb_codepoint_t sid) +{ + if (sid < ARRAY_LENGTH (expert_encoding_to_code)) + return (hb_codepoint_t)expert_encoding_to_code[sid]; + else + return 0; +} + +hb_codepoint_t OT::cff1::lookup_expert_charset_for_sid (hb_codepoint_t glyph) +{ + if (glyph < ARRAY_LENGTH (expert_charset_to_sid)) + return (hb_codepoint_t)expert_charset_to_sid[glyph]; + else + return 0; +} + +hb_codepoint_t OT::cff1::lookup_expert_subset_charset_for_sid (hb_codepoint_t glyph) +{ + if (glyph < ARRAY_LENGTH (expert_subset_charset_to_sid)) + return (hb_codepoint_t)expert_subset_charset_to_sid[glyph]; + else + return 0; +} + +hb_codepoint_t OT::cff1::lookup_expert_charset_for_glyph (hb_codepoint_t sid) +{ + const auto *pair = hb_sorted_array (expert_charset_sid_to_gid).bsearch (sid); + return pair ? pair->gid : 0; +} + +hb_codepoint_t OT::cff1::lookup_expert_subset_charset_for_glyph (hb_codepoint_t sid) +{ + const auto *pair = hb_sorted_array (expert_subset_charset_sid_to_gid).bsearch (sid); + return pair ? pair->gid : 0; +} + +hb_codepoint_t OT::cff1::lookup_standard_encoding_for_sid (hb_codepoint_t code) +{ + if (code < ARRAY_LENGTH (standard_encoding_to_sid)) + return (hb_codepoint_t)standard_encoding_to_sid[code]; + else + return CFF_UNDEF_SID; +} + +struct bounds_t +{ + void init () + { + min.set_int (INT_MAX, INT_MAX); + max.set_int (INT_MIN, INT_MIN); + } + + void update (const point_t &pt) + { + if (pt.x < min.x) min.x = pt.x; + if (pt.x > max.x) max.x = pt.x; + if (pt.y < min.y) min.y = pt.y; + if (pt.y > max.y) max.y = pt.y; + } + + void merge (const bounds_t &b) + { + if (empty ()) + *this = b; + else if (!b.empty ()) + { + if (b.min.x < min.x) min.x = b.min.x; + if (b.max.x > max.x) max.x = b.max.x; + if (b.min.y < min.y) min.y = b.min.y; + if (b.max.y > max.y) max.y = b.max.y; + } + } + + void offset (const point_t &delta) + { + if (!empty ()) + { + min.move (delta); + max.move (delta); + } + } + + bool empty () const { return (min.x >= max.x) || (min.y >= max.y); } + + point_t min; + point_t max; +}; + +struct cff1_extents_param_t +{ + cff1_extents_param_t (const OT::cff1::accelerator_t *_cff) : cff (_cff) + { + bounds.init (); + } + + void start_path () { path_open = true; } + void end_path () { path_open = false; } + bool is_path_open () const { return path_open; } + + bool path_open = false; + bounds_t bounds; + + const OT::cff1::accelerator_t *cff; +}; + +struct cff1_path_procs_extents_t : path_procs_t +{ + static void moveto (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt) + { + param.end_path (); + env.moveto (pt); + } + + static void line (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt1) + { + if (!param.is_path_open ()) + { + param.start_path (); + param.bounds.update (env.get_pt ()); + } + env.moveto (pt1); + param.bounds.update (env.get_pt ()); + } + + static void curve (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) + { + if (!param.is_path_open ()) + { + param.start_path (); + param.bounds.update (env.get_pt ()); + } + /* include control points */ + param.bounds.update (pt1); + param.bounds.update (pt2); + env.moveto (pt3); + param.bounds.update (env.get_pt ()); + } +}; + +static bool _get_bounds (const OT::cff1::accelerator_t *cff, hb_codepoint_t glyph, bounds_t &bounds, bool in_seac=false); + +struct cff1_cs_opset_extents_t : cff1_cs_opset_t +{ + static void process_seac (cff1_cs_interp_env_t &env, cff1_extents_param_t& param) + { + unsigned int n = env.argStack.get_count (); + point_t delta; + delta.x = env.argStack[n-4]; + delta.y = env.argStack[n-3]; + hb_codepoint_t base = param.cff->std_code_to_glyph (env.argStack[n-2].to_int ()); + hb_codepoint_t accent = param.cff->std_code_to_glyph (env.argStack[n-1].to_int ()); + + bounds_t base_bounds, accent_bounds; + if (likely (!env.in_seac && base && accent + && _get_bounds (param.cff, base, base_bounds, true) + && _get_bounds (param.cff, accent, accent_bounds, true))) + { + param.bounds.merge (base_bounds); + accent_bounds.offset (delta); + param.bounds.merge (accent_bounds); + } + else + env.set_error (); + } +}; + +bool _get_bounds (const OT::cff1::accelerator_t *cff, hb_codepoint_t glyph, bounds_t &bounds, bool in_seac) +{ + bounds.init (); + if (unlikely (!cff->is_valid () || (glyph >= cff->num_glyphs))) return false; + + unsigned int fd = cff->fdSelect->get_fd (glyph); + const hb_ubytes_t str = (*cff->charStrings)[glyph]; + cff1_cs_interp_env_t env (str, *cff, fd); + env.set_in_seac (in_seac); + cff1_cs_interpreter_t interp (env); + cff1_extents_param_t param (cff); + if (unlikely (!interp.interpret (param))) return false; + bounds = param.bounds; + return true; +} + +bool OT::cff1::accelerator_t::get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const +{ +#ifdef HB_NO_OT_FONT_CFF + /* XXX Remove check when this code moves to .hh file. */ + return true; +#endif + + bounds_t bounds; + + if (!_get_bounds (this, glyph, bounds)) + return false; + + if (bounds.min.x >= bounds.max.x) + { + extents->width = 0; + extents->x_bearing = 0; + } + else + { + extents->x_bearing = roundf (bounds.min.x.to_real ()); + extents->width = roundf (bounds.max.x.to_real () - extents->x_bearing); + } + if (bounds.min.y >= bounds.max.y) + { + extents->height = 0; + extents->y_bearing = 0; + } + else + { + extents->y_bearing = roundf (bounds.max.y.to_real ()); + extents->height = roundf (bounds.min.y.to_real () - extents->y_bearing); + } + + font->scale_glyph_extents (extents); + + return true; +} + +struct cff1_path_param_t +{ + cff1_path_param_t (const OT::cff1::accelerator_t *cff_, hb_font_t *font_, + hb_draw_session_t &draw_session_, point_t *delta_) + { + draw_session = &draw_session_; + cff = cff_; + font = font_; + delta = delta_; + } + + void move_to (const point_t &p) + { + point_t point = p; + if (delta) point.move (*delta); + draw_session->move_to (font->em_fscalef_x (point.x.to_real ()), font->em_fscalef_y (point.y.to_real ())); + } + + void line_to (const point_t &p) + { + point_t point = p; + if (delta) point.move (*delta); + draw_session->line_to (font->em_fscalef_x (point.x.to_real ()), font->em_fscalef_y (point.y.to_real ())); + } + + void cubic_to (const point_t &p1, const point_t &p2, const point_t &p3) + { + point_t point1 = p1, point2 = p2, point3 = p3; + if (delta) + { + point1.move (*delta); + point2.move (*delta); + point3.move (*delta); + } + draw_session->cubic_to (font->em_fscalef_x (point1.x.to_real ()), font->em_fscalef_y (point1.y.to_real ()), + font->em_fscalef_x (point2.x.to_real ()), font->em_fscalef_y (point2.y.to_real ()), + font->em_fscalef_x (point3.x.to_real ()), font->em_fscalef_y (point3.y.to_real ())); + } + + void end_path () { draw_session->close_path (); } + + hb_font_t *font; + hb_draw_session_t *draw_session; + point_t *delta; + + const OT::cff1::accelerator_t *cff; +}; + +struct cff1_path_procs_path_t : path_procs_t +{ + static void moveto (cff1_cs_interp_env_t &env, cff1_path_param_t& param, const point_t &pt) + { + param.move_to (pt); + env.moveto (pt); + } + + static void line (cff1_cs_interp_env_t &env, cff1_path_param_t ¶m, const point_t &pt1) + { + param.line_to (pt1); + env.moveto (pt1); + } + + static void curve (cff1_cs_interp_env_t &env, cff1_path_param_t ¶m, const point_t &pt1, const point_t &pt2, const point_t &pt3) + { + param.cubic_to (pt1, pt2, pt3); + env.moveto (pt3); + } +}; + +static bool _get_path (const OT::cff1::accelerator_t *cff, hb_font_t *font, hb_codepoint_t glyph, + hb_draw_session_t &draw_session, bool in_seac = false, point_t *delta = nullptr); + +struct cff1_cs_opset_path_t : cff1_cs_opset_t +{ + static void process_seac (cff1_cs_interp_env_t &env, cff1_path_param_t& param) + { + /* End previous path */ + param.end_path (); + + unsigned int n = env.argStack.get_count (); + point_t delta; + delta.x = env.argStack[n-4]; + delta.y = env.argStack[n-3]; + hb_codepoint_t base = param.cff->std_code_to_glyph (env.argStack[n-2].to_int ()); + hb_codepoint_t accent = param.cff->std_code_to_glyph (env.argStack[n-1].to_int ()); + + if (unlikely (!(!env.in_seac && base && accent + && _get_path (param.cff, param.font, base, *param.draw_session, true) + && _get_path (param.cff, param.font, accent, *param.draw_session, true, &delta)))) + env.set_error (); + } +}; + +bool _get_path (const OT::cff1::accelerator_t *cff, hb_font_t *font, hb_codepoint_t glyph, + hb_draw_session_t &draw_session, bool in_seac, point_t *delta) +{ + if (unlikely (!cff->is_valid () || (glyph >= cff->num_glyphs))) return false; + + unsigned int fd = cff->fdSelect->get_fd (glyph); + const hb_ubytes_t str = (*cff->charStrings)[glyph]; + cff1_cs_interp_env_t env (str, *cff, fd); + env.set_in_seac (in_seac); + cff1_cs_interpreter_t interp (env); + cff1_path_param_t param (cff, font, draw_session, delta); + if (unlikely (!interp.interpret (param))) return false; + + /* Let's end the path specially since it is called inside seac also */ + param.end_path (); + + return true; +} + +bool OT::cff1::accelerator_t::paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const +{ + funcs->push_clip_glyph (data, glyph, font); + funcs->color (data, true, foreground); + funcs->pop_clip (data); + + return true; +} + +bool OT::cff1::accelerator_t::get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const +{ +#ifdef HB_NO_OT_FONT_CFF + /* XXX Remove check when this code moves to .hh file. */ + return true; +#endif + + return _get_path (this, font, glyph, draw_session); +} + +struct get_seac_param_t +{ + get_seac_param_t (const OT::cff1::accelerator_t *_cff) : cff (_cff) {} + + bool has_seac () const { return base && accent; } + + const OT::cff1::accelerator_t *cff; + hb_codepoint_t base = 0; + hb_codepoint_t accent = 0; +}; + +struct cff1_cs_opset_seac_t : cff1_cs_opset_t +{ + static void process_seac (cff1_cs_interp_env_t &env, get_seac_param_t& param) + { + unsigned int n = env.argStack.get_count (); + hb_codepoint_t base_char = (hb_codepoint_t)env.argStack[n-2].to_int (); + hb_codepoint_t accent_char = (hb_codepoint_t)env.argStack[n-1].to_int (); + + param.base = param.cff->std_code_to_glyph (base_char); + param.accent = param.cff->std_code_to_glyph (accent_char); + } +}; + +bool OT::cff1::accelerator_t::get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const +{ + if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false; + + unsigned int fd = fdSelect->get_fd (glyph); + const hb_ubytes_t str = (*charStrings)[glyph]; + cff1_cs_interp_env_t env (str, *this, fd); + cff1_cs_interpreter_t interp (env); + get_seac_param_t param (this); + if (unlikely (!interp.interpret (param))) return false; + + if (param.has_seac ()) + { + *base = param.base; + *accent = param.accent; + return true; + } + return false; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-ot-cff1-table.hh b/gfx/harfbuzz/src/hb-ot-cff1-table.hh new file mode 100644 index 0000000000..4d0a965eee --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff1-table.hh @@ -0,0 +1,1484 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_OT_CFF1_TABLE_HH +#define HB_OT_CFF1_TABLE_HH + +#include "hb-ot-cff-common.hh" +#include "hb-subset-cff1.hh" +#include "hb-draw.hh" +#include "hb-paint.hh" + +#define HB_STRING_ARRAY_NAME cff1_std_strings +#define HB_STRING_ARRAY_LIST "hb-ot-cff1-std-str.hh" +#include "hb-string-array.hh" +#undef HB_STRING_ARRAY_LIST +#undef HB_STRING_ARRAY_NAME + +namespace CFF { + +/* + * CFF -- Compact Font Format (CFF) + * https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf + */ +#define HB_OT_TAG_CFF1 HB_TAG('C','F','F',' ') + +#define CFF_UNDEF_SID CFF_UNDEF_CODE + +enum EncodingID { StandardEncoding = 0, ExpertEncoding = 1 }; +enum CharsetID { ISOAdobeCharset = 0, ExpertCharset = 1, ExpertSubsetCharset = 2 }; + +typedef CFFIndex CFF1Index; +template struct CFF1IndexOf : CFFIndexOf {}; + +typedef CFFIndex CFF1Index; +typedef CFF1Index CFF1CharStrings; +typedef Subrs CFF1Subrs; + +struct CFF1FDSelect : FDSelect {}; + +/* Encoding */ +struct Encoding0 { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (codes.sanitize (c)); + } + + hb_codepoint_t get_code (hb_codepoint_t glyph) const + { + assert (glyph > 0); + glyph--; + if (glyph < nCodes ()) + { + return (hb_codepoint_t)codes[glyph]; + } + else + return CFF_UNDEF_CODE; + } + + HBUINT8 &nCodes () { return codes.len; } + HBUINT8 nCodes () const { return codes.len; } + + ArrayOf codes; + + DEFINE_SIZE_ARRAY_SIZED (1, codes); +}; + +struct Encoding1_Range { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT8 first; + HBUINT8 nLeft; + + DEFINE_SIZE_STATIC (2); +}; + +struct Encoding1 { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (ranges.sanitize (c)); + } + + hb_codepoint_t get_code (hb_codepoint_t glyph) const + { + assert (glyph > 0); + glyph--; + for (unsigned int i = 0; i < nRanges (); i++) + { + if (glyph <= ranges[i].nLeft) + { + hb_codepoint_t code = (hb_codepoint_t) ranges[i].first + glyph; + return (likely (code < 0x100) ? code: CFF_UNDEF_CODE); + } + glyph -= (ranges[i].nLeft + 1); + } + return CFF_UNDEF_CODE; + } + + HBUINT8 &nRanges () { return ranges.len; } + HBUINT8 nRanges () const { return ranges.len; } + + ArrayOf ranges; + + DEFINE_SIZE_ARRAY_SIZED (1, ranges); +}; + +struct SuppEncoding { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT8 code; + HBUINT16 glyph; + + DEFINE_SIZE_STATIC (3); +}; + +struct CFF1SuppEncData { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (supps.sanitize (c)); + } + + void get_codes (hb_codepoint_t sid, hb_vector_t &codes) const + { + for (unsigned int i = 0; i < nSups (); i++) + if (sid == supps[i].glyph) + codes.push (supps[i].code); + } + + HBUINT8 &nSups () { return supps.len; } + HBUINT8 nSups () const { return supps.len; } + + ArrayOf supps; + + DEFINE_SIZE_ARRAY_SIZED (1, supps); +}; + +struct Encoding +{ + /* serialize a fullset Encoding */ + bool serialize (hb_serialize_context_t *c, const Encoding &src) + { + TRACE_SERIALIZE (this); + unsigned int size = src.get_size (); + Encoding *dest = c->allocate_size (size); + if (unlikely (!dest)) return_trace (false); + hb_memcpy (dest, &src, size); + return_trace (true); + } + + /* serialize a subset Encoding */ + bool serialize (hb_serialize_context_t *c, + uint8_t format, + unsigned int enc_count, + const hb_vector_t& code_ranges, + const hb_vector_t& supp_codes) + { + TRACE_SERIALIZE (this); + Encoding *dest = c->extend_min (this); + if (unlikely (!dest)) return_trace (false); + dest->format = format | ((supp_codes.length > 0) ? 0x80 : 0); + switch (format) { + case 0: + { + Encoding0 *fmt0 = c->allocate_size (Encoding0::min_size + HBUINT8::static_size * enc_count); + if (unlikely (!fmt0)) return_trace (false); + fmt0->nCodes () = enc_count; + unsigned int glyph = 0; + for (unsigned int i = 0; i < code_ranges.length; i++) + { + hb_codepoint_t code = code_ranges[i].code; + for (int left = (int)code_ranges[i].glyph; left >= 0; left--) + fmt0->codes[glyph++] = code++; + if (unlikely (!((glyph <= 0x100) && (code <= 0x100)))) + return_trace (false); + } + } + break; + + case 1: + { + Encoding1 *fmt1 = c->allocate_size (Encoding1::min_size + Encoding1_Range::static_size * code_ranges.length); + if (unlikely (!fmt1)) return_trace (false); + fmt1->nRanges () = code_ranges.length; + for (unsigned int i = 0; i < code_ranges.length; i++) + { + if (unlikely (!((code_ranges[i].code <= 0xFF) && (code_ranges[i].glyph <= 0xFF)))) + return_trace (false); + fmt1->ranges[i].first = code_ranges[i].code; + fmt1->ranges[i].nLeft = code_ranges[i].glyph; + } + } + break; + + } + + if (supp_codes.length) + { + CFF1SuppEncData *suppData = c->allocate_size (CFF1SuppEncData::min_size + SuppEncoding::static_size * supp_codes.length); + if (unlikely (!suppData)) return_trace (false); + suppData->nSups () = supp_codes.length; + for (unsigned int i = 0; i < supp_codes.length; i++) + { + suppData->supps[i].code = supp_codes[i].code; + suppData->supps[i].glyph = supp_codes[i].glyph; /* actually SID */ + } + } + + return_trace (true); + } + + unsigned int get_size () const + { + unsigned int size = min_size; + switch (table_format ()) + { + case 0: size += u.format0.get_size (); break; + case 1: size += u.format1.get_size (); break; + } + if (has_supplement ()) + size += suppEncData ().get_size (); + return size; + } + + hb_codepoint_t get_code (hb_codepoint_t glyph) const + { + switch (table_format ()) + { + case 0: return u.format0.get_code (glyph); + case 1: return u.format1.get_code (glyph); + default:return 0; + } + } + + uint8_t table_format () const { return format & 0x7F; } + bool has_supplement () const { return format & 0x80; } + + void get_supplement_codes (hb_codepoint_t sid, hb_vector_t &codes) const + { + codes.resize (0); + if (has_supplement ()) + suppEncData().get_codes (sid, codes); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + switch (table_format ()) + { + case 0: if (unlikely (!u.format0.sanitize (c))) { return_trace (false); } break; + case 1: if (unlikely (!u.format1.sanitize (c))) { return_trace (false); } break; + default:return_trace (false); + } + return_trace (likely (!has_supplement () || suppEncData ().sanitize (c))); + } + + protected: + const CFF1SuppEncData &suppEncData () const + { + switch (table_format ()) + { + case 0: return StructAfter (u.format0.codes[u.format0.nCodes ()-1]); + case 1: return StructAfter (u.format1.ranges[u.format1.nRanges ()-1]); + default:return Null (CFF1SuppEncData); + } + } + + public: + HBUINT8 format; + union { + Encoding0 format0; + Encoding1 format1; + } u; + /* CFF1SuppEncData suppEncData; */ + + DEFINE_SIZE_MIN (1); +}; + +/* Charset */ +struct Charset0 { + bool sanitize (hb_sanitize_context_t *c, unsigned int num_glyphs) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && sids[num_glyphs - 1].sanitize (c)); + } + + hb_codepoint_t get_sid (hb_codepoint_t glyph, unsigned num_glyphs) const + { + if (unlikely (glyph >= num_glyphs)) return 0; + if (glyph == 0) + return 0; + else + return sids[glyph - 1]; + } + + void collect_glyph_to_sid_map (hb_map_t *mapping, unsigned int num_glyphs) const + { + for (hb_codepoint_t gid = 1; gid < num_glyphs; gid++) + mapping->set (gid, sids[gid - 1]); + } + + hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const + { + if (sid == 0) + return 0; + + for (unsigned int glyph = 1; glyph < num_glyphs; glyph++) + { + if (sids[glyph-1] == sid) + return glyph; + } + return 0; + } + + unsigned int get_size (unsigned int num_glyphs) const + { + assert (num_glyphs > 0); + return HBUINT16::static_size * (num_glyphs - 1); + } + + HBUINT16 sids[HB_VAR_ARRAY]; + + DEFINE_SIZE_ARRAY(0, sids); +}; + +template +struct Charset_Range { + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT16 first; + TYPE nLeft; + + DEFINE_SIZE_STATIC (HBUINT16::static_size + TYPE::static_size); +}; + +template +struct Charset1_2 { + bool sanitize (hb_sanitize_context_t *c, unsigned int num_glyphs) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + num_glyphs--; + for (unsigned int i = 0; num_glyphs > 0; i++) + { + if (unlikely (!ranges[i].sanitize (c) || (num_glyphs < ranges[i].nLeft + 1))) + return_trace (false); + num_glyphs -= (ranges[i].nLeft + 1); + } + return_trace (true); + } + + hb_codepoint_t get_sid (hb_codepoint_t glyph, unsigned num_glyphs) const + { + if (unlikely (glyph >= num_glyphs)) return 0; + if (glyph == 0) return 0; + glyph--; + for (unsigned int i = 0;; i++) + { + if (glyph <= ranges[i].nLeft) + return (hb_codepoint_t) ranges[i].first + glyph; + glyph -= (ranges[i].nLeft + 1); + } + + return 0; + } + + void collect_glyph_to_sid_map (hb_map_t *mapping, unsigned int num_glyphs) const + { + hb_codepoint_t gid = 1; + if (gid >= num_glyphs) + return; + for (unsigned i = 0;; i++) + { + hb_codepoint_t sid = ranges[i].first; + unsigned count = ranges[i].nLeft + 1; + for (unsigned j = 0; j < count; j++) + mapping->set (gid++, sid++); + + if (gid >= num_glyphs) + break; + } + } + + hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const + { + if (sid == 0) return 0; + hb_codepoint_t glyph = 1; + for (unsigned int i = 0;; i++) + { + if (glyph >= num_glyphs) + return 0; + if ((ranges[i].first <= sid) && (sid <= ranges[i].first + ranges[i].nLeft)) + return glyph + (sid - ranges[i].first); + glyph += (ranges[i].nLeft + 1); + } + + return 0; + } + + unsigned int get_size (unsigned int num_glyphs) const + { + unsigned int size = HBUINT8::static_size; + int glyph = (int)num_glyphs; + + assert (glyph > 0); + glyph--; + for (unsigned int i = 0; glyph > 0; i++) + { + glyph -= (ranges[i].nLeft + 1); + size += Charset_Range::static_size; + } + + return size; + } + + Charset_Range ranges[HB_VAR_ARRAY]; + + DEFINE_SIZE_ARRAY (0, ranges); +}; + +typedef Charset1_2 Charset1; +typedef Charset1_2 Charset2; +typedef Charset_Range Charset1_Range; +typedef Charset_Range Charset2_Range; + +struct Charset +{ + /* serialize a fullset Charset */ + bool serialize (hb_serialize_context_t *c, const Charset &src, unsigned int num_glyphs) + { + TRACE_SERIALIZE (this); + unsigned int size = src.get_size (num_glyphs); + Charset *dest = c->allocate_size (size); + if (unlikely (!dest)) return_trace (false); + hb_memcpy (dest, &src, size); + return_trace (true); + } + + /* serialize a subset Charset */ + bool serialize (hb_serialize_context_t *c, + uint8_t format, + unsigned int num_glyphs, + const hb_vector_t& sid_ranges) + { + TRACE_SERIALIZE (this); + Charset *dest = c->extend_min (this); + if (unlikely (!dest)) return_trace (false); + dest->format = format; + switch (format) + { + case 0: + { + Charset0 *fmt0 = c->allocate_size (Charset0::min_size + HBUINT16::static_size * (num_glyphs - 1)); + if (unlikely (!fmt0)) return_trace (false); + unsigned int glyph = 0; + for (unsigned int i = 0; i < sid_ranges.length; i++) + { + hb_codepoint_t sid = sid_ranges[i].code; + for (int left = (int)sid_ranges[i].glyph; left >= 0; left--) + fmt0->sids[glyph++] = sid++; + } + } + break; + + case 1: + { + Charset1 *fmt1 = c->allocate_size (Charset1::min_size + Charset1_Range::static_size * sid_ranges.length); + if (unlikely (!fmt1)) return_trace (false); + for (unsigned int i = 0; i < sid_ranges.length; i++) + { + if (unlikely (!(sid_ranges[i].glyph <= 0xFF))) + return_trace (false); + fmt1->ranges[i].first = sid_ranges[i].code; + fmt1->ranges[i].nLeft = sid_ranges[i].glyph; + } + } + break; + + case 2: + { + Charset2 *fmt2 = c->allocate_size (Charset2::min_size + Charset2_Range::static_size * sid_ranges.length); + if (unlikely (!fmt2)) return_trace (false); + for (unsigned int i = 0; i < sid_ranges.length; i++) + { + if (unlikely (!(sid_ranges[i].glyph <= 0xFFFF))) + return_trace (false); + fmt2->ranges[i].first = sid_ranges[i].code; + fmt2->ranges[i].nLeft = sid_ranges[i].glyph; + } + } + break; + + } + return_trace (true); + } + + unsigned int get_size (unsigned int num_glyphs) const + { + switch (format) + { + case 0: return min_size + u.format0.get_size (num_glyphs); + case 1: return min_size + u.format1.get_size (num_glyphs); + case 2: return min_size + u.format2.get_size (num_glyphs); + default:return 0; + } + } + + hb_codepoint_t get_sid (hb_codepoint_t glyph, unsigned int num_glyphs) const + { + switch (format) + { + case 0: return u.format0.get_sid (glyph, num_glyphs); + case 1: return u.format1.get_sid (glyph, num_glyphs); + case 2: return u.format2.get_sid (glyph, num_glyphs); + default:return 0; + } + } + + void collect_glyph_to_sid_map (hb_map_t *mapping, unsigned int num_glyphs) const + { + switch (format) + { + case 0: u.format0.collect_glyph_to_sid_map (mapping, num_glyphs); return; + case 1: u.format1.collect_glyph_to_sid_map (mapping, num_glyphs); return; + case 2: u.format2.collect_glyph_to_sid_map (mapping, num_glyphs); return; + default:return; + } + } + + hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const + { + switch (format) + { + case 0: return u.format0.get_glyph (sid, num_glyphs); + case 1: return u.format1.get_glyph (sid, num_glyphs); + case 2: return u.format2.get_glyph (sid, num_glyphs); + default:return 0; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + switch (format) + { + case 0: return_trace (u.format0.sanitize (c, c->get_num_glyphs ())); + case 1: return_trace (u.format1.sanitize (c, c->get_num_glyphs ())); + case 2: return_trace (u.format2.sanitize (c, c->get_num_glyphs ())); + default:return_trace (false); + } + } + + HBUINT8 format; + union { + Charset0 format0; + Charset1 format1; + Charset2 format2; + } u; + + DEFINE_SIZE_MIN (1); +}; + +struct CFF1StringIndex : CFF1Index +{ + bool serialize (hb_serialize_context_t *c, const CFF1StringIndex &strings, + const hb_inc_bimap_t &sidmap) + { + TRACE_SERIALIZE (this); + if (unlikely ((strings.count == 0) || (sidmap.get_population () == 0))) + { + if (unlikely (!c->extend_min (this->count))) + return_trace (false); + count = 0; + return_trace (true); + } + + byte_str_array_t bytesArray; + if (!bytesArray.resize (sidmap.get_population ())) + return_trace (false); + for (unsigned int i = 0; i < strings.count; i++) + { + hb_codepoint_t j = sidmap[i]; + if (j != HB_MAP_VALUE_INVALID) + bytesArray[j] = strings[i]; + } + + bool result = CFF1Index::serialize (c, bytesArray); + return_trace (result); + } +}; + +struct cff1_top_dict_interp_env_t : num_interp_env_t +{ + cff1_top_dict_interp_env_t () + : num_interp_env_t(), prev_offset(0), last_offset(0) {} + cff1_top_dict_interp_env_t (const hb_ubytes_t &bytes) + : num_interp_env_t(bytes), prev_offset(0), last_offset(0) {} + + unsigned int prev_offset; + unsigned int last_offset; +}; + +struct name_dict_values_t +{ + enum name_dict_val_index_t + { + version, + notice, + copyright, + fullName, + familyName, + weight, + postscript, + fontName, + baseFontName, + registry, + ordering, + + ValCount + }; + + void init () + { + for (unsigned int i = 0; i < ValCount; i++) + values[i] = CFF_UNDEF_SID; + } + + unsigned int& operator[] (unsigned int i) + { assert (i < ValCount); return values[i]; } + + unsigned int operator[] (unsigned int i) const + { assert (i < ValCount); return values[i]; } + + static enum name_dict_val_index_t name_op_to_index (op_code_t op) + { + switch (op) { + default: // can't happen - just make some compiler happy + case OpCode_version: + return version; + case OpCode_Notice: + return notice; + case OpCode_Copyright: + return copyright; + case OpCode_FullName: + return fullName; + case OpCode_FamilyName: + return familyName; + case OpCode_Weight: + return weight; + case OpCode_PostScript: + return postscript; + case OpCode_FontName: + return fontName; + case OpCode_BaseFontName: + return baseFontName; + } + } + + unsigned int values[ValCount]; +}; + +struct cff1_top_dict_val_t : op_str_t +{ + unsigned int last_arg_offset; +}; + +struct cff1_top_dict_values_t : top_dict_values_t +{ + void init () + { + top_dict_values_t::init (); + + nameSIDs.init (); + ros_supplement = 0; + cidCount = 8720; + EncodingOffset = 0; + CharsetOffset = 0; + FDSelectOffset = 0; + privateDictInfo.init (); + } + void fini () { top_dict_values_t::fini (); } + + bool is_CID () const + { return nameSIDs[name_dict_values_t::registry] != CFF_UNDEF_SID; } + + name_dict_values_t nameSIDs; + unsigned int ros_supplement_offset; + unsigned int ros_supplement; + unsigned int cidCount; + + unsigned int EncodingOffset; + unsigned int CharsetOffset; + unsigned int FDSelectOffset; + table_info_t privateDictInfo; +}; + +struct cff1_top_dict_opset_t : top_dict_opset_t +{ + static void process_op (op_code_t op, cff1_top_dict_interp_env_t& env, cff1_top_dict_values_t& dictval) + { + cff1_top_dict_val_t val; + val.last_arg_offset = (env.last_offset-1) - dictval.opStart; /* offset to the last argument */ + + switch (op) { + case OpCode_version: + case OpCode_Notice: + case OpCode_Copyright: + case OpCode_FullName: + case OpCode_FontName: + case OpCode_FamilyName: + case OpCode_Weight: + case OpCode_PostScript: + case OpCode_BaseFontName: + dictval.nameSIDs[name_dict_values_t::name_op_to_index (op)] = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_isFixedPitch: + case OpCode_ItalicAngle: + case OpCode_UnderlinePosition: + case OpCode_UnderlineThickness: + case OpCode_PaintType: + case OpCode_CharstringType: + case OpCode_UniqueID: + case OpCode_StrokeWidth: + case OpCode_SyntheticBase: + case OpCode_CIDFontVersion: + case OpCode_CIDFontRevision: + case OpCode_CIDFontType: + case OpCode_UIDBase: + case OpCode_FontBBox: + case OpCode_XUID: + case OpCode_BaseFontBlend: + env.clear_args (); + break; + + case OpCode_CIDCount: + dictval.cidCount = env.argStack.pop_uint (); + env.clear_args (); + break; + + case OpCode_ROS: + dictval.ros_supplement = env.argStack.pop_uint (); + dictval.nameSIDs[name_dict_values_t::ordering] = env.argStack.pop_uint (); + dictval.nameSIDs[name_dict_values_t::registry] = env.argStack.pop_uint (); + env.clear_args (); + break; + + case OpCode_Encoding: + dictval.EncodingOffset = env.argStack.pop_uint (); + env.clear_args (); + if (unlikely (dictval.EncodingOffset == 0)) return; + break; + + case OpCode_charset: + dictval.CharsetOffset = env.argStack.pop_uint (); + env.clear_args (); + if (unlikely (dictval.CharsetOffset == 0)) return; + break; + + case OpCode_FDSelect: + dictval.FDSelectOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + + case OpCode_Private: + dictval.privateDictInfo.offset = env.argStack.pop_uint (); + dictval.privateDictInfo.size = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + env.last_offset = env.str_ref.get_offset (); + top_dict_opset_t::process_op (op, env, dictval); + /* Record this operand below if stack is empty, otherwise done */ + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref, val); + } +}; + +struct cff1_font_dict_values_t : dict_values_t +{ + void init () + { + dict_values_t::init (); + privateDictInfo.init (); + fontName = CFF_UNDEF_SID; + } + void fini () { dict_values_t::fini (); } + + table_info_t privateDictInfo; + unsigned int fontName; +}; + +struct cff1_font_dict_opset_t : dict_opset_t +{ + static void process_op (op_code_t op, num_interp_env_t& env, cff1_font_dict_values_t& dictval) + { + switch (op) { + case OpCode_FontName: + dictval.fontName = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_FontMatrix: + case OpCode_PaintType: + env.clear_args (); + break; + case OpCode_Private: + dictval.privateDictInfo.offset = env.argStack.pop_uint (); + dictval.privateDictInfo.size = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + dict_opset_t::process_op (op, env); + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref); + } +}; + +template +struct cff1_private_dict_values_base_t : dict_values_t +{ + void init () + { + dict_values_t::init (); + subrsOffset = 0; + localSubrs = &Null (CFF1Subrs); + } + void fini () { dict_values_t::fini (); } + + unsigned int subrsOffset; + const CFF1Subrs *localSubrs; +}; + +typedef cff1_private_dict_values_base_t cff1_private_dict_values_subset_t; +typedef cff1_private_dict_values_base_t cff1_private_dict_values_t; + +struct cff1_private_dict_opset_t : dict_opset_t +{ + static void process_op (op_code_t op, num_interp_env_t& env, cff1_private_dict_values_t& dictval) + { + num_dict_val_t val; + val.init (); + + switch (op) { + case OpCode_BlueValues: + case OpCode_OtherBlues: + case OpCode_FamilyBlues: + case OpCode_FamilyOtherBlues: + case OpCode_StemSnapH: + case OpCode_StemSnapV: + case OpCode_StdHW: + case OpCode_StdVW: + case OpCode_BlueScale: + case OpCode_BlueShift: + case OpCode_BlueFuzz: + case OpCode_ForceBold: + case OpCode_LanguageGroup: + case OpCode_ExpansionFactor: + case OpCode_initialRandomSeed: + case OpCode_defaultWidthX: + case OpCode_nominalWidthX: + env.clear_args (); + break; + case OpCode_Subrs: + dictval.subrsOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + dict_opset_t::process_op (op, env); + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref, val); + } +}; + +struct cff1_private_dict_opset_subset : dict_opset_t +{ + static void process_op (op_code_t op, num_interp_env_t& env, cff1_private_dict_values_subset_t& dictval) + { + switch (op) { + case OpCode_BlueValues: + case OpCode_OtherBlues: + case OpCode_FamilyBlues: + case OpCode_FamilyOtherBlues: + case OpCode_StemSnapH: + case OpCode_StemSnapV: + case OpCode_StdHW: + case OpCode_StdVW: + case OpCode_BlueScale: + case OpCode_BlueShift: + case OpCode_BlueFuzz: + case OpCode_ForceBold: + case OpCode_LanguageGroup: + case OpCode_ExpansionFactor: + case OpCode_initialRandomSeed: + case OpCode_defaultWidthX: + case OpCode_nominalWidthX: + env.clear_args (); + break; + + case OpCode_Subrs: + dictval.subrsOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + dict_opset_t::process_op (op, env); + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref); + } +}; + +typedef dict_interpreter_t cff1_top_dict_interpreter_t; +typedef dict_interpreter_t cff1_font_dict_interpreter_t; + +typedef CFF1Index CFF1NameIndex; +typedef CFF1IndexOf CFF1TopDictIndex; + +struct cff1_font_dict_values_mod_t +{ + cff1_font_dict_values_mod_t() { init (); } + + void init () { init ( &Null (cff1_font_dict_values_t), CFF_UNDEF_SID ); } + + void init (const cff1_font_dict_values_t *base_, + unsigned int fontName_) + { + base = base_; + fontName = fontName_; + privateDictInfo.init (); + } + + unsigned get_count () const { return base->get_count (); } + + const op_str_t &operator [] (unsigned int i) const { return (*base)[i]; } + + const cff1_font_dict_values_t *base; + table_info_t privateDictInfo; + unsigned int fontName; +}; + +struct CFF1FDArray : FDArray +{ + /* FDArray::serialize() requires this partial specialization to compile */ + template + bool serialize (hb_serialize_context_t *c, ITER it, OP_SERIALIZER& opszr) + { return FDArray::serialize (c, it, opszr); } +}; + +} /* namespace CFF */ + +namespace OT { + +using namespace CFF; + +struct cff1 +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_CFF1; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (version.major == 1)); + } + + template + struct accelerator_templ_t + { + void init (hb_face_t *face) + { + topDict.init (); + fontDicts.init (); + privateDicts.init (); + + this->blob = sc.reference_table (face); + + /* setup for run-time santization */ + sc.init (this->blob); + sc.start_processing (); + + const OT::cff1 *cff = this->blob->template as (); + + if (cff == &Null (OT::cff1)) + { fini (); return; } + + nameIndex = &cff->nameIndex (cff); + if ((nameIndex == &Null (CFF1NameIndex)) || !nameIndex->sanitize (&sc)) + { fini (); return; } + + topDictIndex = &StructAtOffset (nameIndex, nameIndex->get_size ()); + if ((topDictIndex == &Null (CFF1TopDictIndex)) || !topDictIndex->sanitize (&sc) || (topDictIndex->count == 0)) + { fini (); return; } + + { /* parse top dict */ + const hb_ubytes_t topDictStr = (*topDictIndex)[0]; + if (unlikely (!topDictStr.sanitize (&sc))) { fini (); return; } + cff1_top_dict_interp_env_t env (topDictStr); + cff1_top_dict_interpreter_t top_interp (env); + if (unlikely (!top_interp.interpret (topDict))) { fini (); return; } + } + + if (is_predef_charset ()) + charset = &Null (Charset); + else + { + charset = &StructAtOffsetOrNull (cff, topDict.CharsetOffset); + if (unlikely ((charset == &Null (Charset)) || !charset->sanitize (&sc))) { fini (); return; } + } + + fdCount = 1; + if (is_CID ()) + { + fdArray = &StructAtOffsetOrNull (cff, topDict.FDArrayOffset); + fdSelect = &StructAtOffsetOrNull (cff, topDict.FDSelectOffset); + if (unlikely ((fdArray == &Null (CFF1FDArray)) || !fdArray->sanitize (&sc) || + (fdSelect == &Null (CFF1FDSelect)) || !fdSelect->sanitize (&sc, fdArray->count))) + { fini (); return; } + + fdCount = fdArray->count; + } + else + { + fdArray = &Null (CFF1FDArray); + fdSelect = &Null (CFF1FDSelect); + } + + encoding = &Null (Encoding); + if (is_CID ()) + { + if (unlikely (charset == &Null (Charset))) { fini (); return; } + } + else + { + if (!is_predef_encoding ()) + { + encoding = &StructAtOffsetOrNull (cff, topDict.EncodingOffset); + if (unlikely ((encoding == &Null (Encoding)) || !encoding->sanitize (&sc))) { fini (); return; } + } + } + + stringIndex = &StructAtOffset (topDictIndex, topDictIndex->get_size ()); + if ((stringIndex == &Null (CFF1StringIndex)) || !stringIndex->sanitize (&sc)) + { fini (); return; } + + globalSubrs = &StructAtOffset (stringIndex, stringIndex->get_size ()); + if ((globalSubrs != &Null (CFF1Subrs)) && !globalSubrs->sanitize (&sc)) + { fini (); return; } + + charStrings = &StructAtOffsetOrNull (cff, topDict.charStringsOffset); + + if ((charStrings == &Null (CFF1CharStrings)) || unlikely (!charStrings->sanitize (&sc))) + { fini (); return; } + + num_glyphs = charStrings->count; + if (num_glyphs != sc.get_num_glyphs ()) + { fini (); return; } + + if (unlikely (!privateDicts.resize (fdCount))) + { fini (); return; } + for (unsigned int i = 0; i < fdCount; i++) + privateDicts[i].init (); + + // parse CID font dicts and gather private dicts + if (is_CID ()) + { + for (unsigned int i = 0; i < fdCount; i++) + { + hb_ubytes_t fontDictStr = (*fdArray)[i]; + if (unlikely (!fontDictStr.sanitize (&sc))) { fini (); return; } + cff1_font_dict_values_t *font; + cff1_top_dict_interp_env_t env (fontDictStr); + cff1_font_dict_interpreter_t font_interp (env); + font = fontDicts.push (); + if (unlikely (fontDicts.in_error ())) { fini (); return; } + + font->init (); + if (unlikely (!font_interp.interpret (*font))) { fini (); return; } + PRIVDICTVAL *priv = &privateDicts[i]; + const hb_ubytes_t privDictStr = StructAtOffset (cff, font->privateDictInfo.offset).as_ubytes (font->privateDictInfo.size); + if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; } + num_interp_env_t env2 (privDictStr); + dict_interpreter_t priv_interp (env2); + priv->init (); + if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; } + + priv->localSubrs = &StructAtOffsetOrNull (&privDictStr, priv->subrsOffset); + if (priv->localSubrs != &Null (CFF1Subrs) && + unlikely (!priv->localSubrs->sanitize (&sc))) + { fini (); return; } + } + } + else /* non-CID */ + { + cff1_top_dict_values_t *font = &topDict; + PRIVDICTVAL *priv = &privateDicts[0]; + + const hb_ubytes_t privDictStr = StructAtOffset (cff, font->privateDictInfo.offset).as_ubytes (font->privateDictInfo.size); + if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; } + num_interp_env_t env (privDictStr); + dict_interpreter_t priv_interp (env); + priv->init (); + if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; } + + priv->localSubrs = &StructAtOffsetOrNull (&privDictStr, priv->subrsOffset); + if (priv->localSubrs != &Null (CFF1Subrs) && + unlikely (!priv->localSubrs->sanitize (&sc))) + { fini (); return; } + } + } + + void fini () + { + sc.end_processing (); + topDict.fini (); + fontDicts.fini (); + privateDicts.fini (); + hb_blob_destroy (blob); + blob = nullptr; + } + + bool is_valid () const { return blob; } + bool is_CID () const { return topDict.is_CID (); } + + bool is_predef_charset () const { return topDict.CharsetOffset <= ExpertSubsetCharset; } + + unsigned int std_code_to_glyph (hb_codepoint_t code) const + { + hb_codepoint_t sid = lookup_standard_encoding_for_sid (code); + if (unlikely (sid == CFF_UNDEF_SID)) + return 0; + + if (charset != &Null (Charset)) + return charset->get_glyph (sid, num_glyphs); + else if ((topDict.CharsetOffset == ISOAdobeCharset) + && (code <= 228 /*zcaron*/)) return sid; + return 0; + } + + bool is_predef_encoding () const { return topDict.EncodingOffset <= ExpertEncoding; } + + hb_codepoint_t glyph_to_code (hb_codepoint_t glyph) const + { + if (encoding != &Null (Encoding)) + return encoding->get_code (glyph); + else + { + hb_codepoint_t sid = glyph_to_sid (glyph); + if (sid == 0) return 0; + hb_codepoint_t code = 0; + switch (topDict.EncodingOffset) + { + case StandardEncoding: + code = lookup_standard_encoding_for_code (sid); + break; + case ExpertEncoding: + code = lookup_expert_encoding_for_code (sid); + break; + default: + break; + } + return code; + } + } + + hb_map_t *create_glyph_to_sid_map () const + { + if (charset != &Null (Charset)) + { + hb_map_t *mapping = hb_map_create (); + mapping->set (0, 0); + charset->collect_glyph_to_sid_map (mapping, num_glyphs); + return mapping; + } + else + return nullptr; + } + + hb_codepoint_t glyph_to_sid (hb_codepoint_t glyph) const + { + if (charset != &Null (Charset)) + return charset->get_sid (glyph, num_glyphs); + else + { + hb_codepoint_t sid = 0; + switch (topDict.CharsetOffset) + { + case ISOAdobeCharset: + if (glyph <= 228 /*zcaron*/) sid = glyph; + break; + case ExpertCharset: + sid = lookup_expert_charset_for_sid (glyph); + break; + case ExpertSubsetCharset: + sid = lookup_expert_subset_charset_for_sid (glyph); + break; + default: + break; + } + return sid; + } + } + + hb_codepoint_t sid_to_glyph (hb_codepoint_t sid) const + { + if (charset != &Null (Charset)) + return charset->get_glyph (sid, num_glyphs); + else + { + hb_codepoint_t glyph = 0; + switch (topDict.CharsetOffset) + { + case ISOAdobeCharset: + if (sid <= 228 /*zcaron*/) glyph = sid; + break; + case ExpertCharset: + glyph = lookup_expert_charset_for_glyph (sid); + break; + case ExpertSubsetCharset: + glyph = lookup_expert_subset_charset_for_glyph (sid); + break; + default: + break; + } + return glyph; + } + } + + protected: + hb_sanitize_context_t sc; + + public: + hb_blob_t *blob = nullptr; + const Encoding *encoding = nullptr; + const Charset *charset = nullptr; + const CFF1NameIndex *nameIndex = nullptr; + const CFF1TopDictIndex *topDictIndex = nullptr; + const CFF1StringIndex *stringIndex = nullptr; + const CFF1Subrs *globalSubrs = nullptr; + const CFF1CharStrings *charStrings = nullptr; + const CFF1FDArray *fdArray = nullptr; + const CFF1FDSelect *fdSelect = nullptr; + unsigned int fdCount = 0; + + cff1_top_dict_values_t topDict; + hb_vector_t + fontDicts; + hb_vector_t privateDicts; + + unsigned int num_glyphs = 0; + }; + + struct accelerator_t : accelerator_templ_t + { + accelerator_t (hb_face_t *face) + { + SUPER::init (face); + + glyph_names.set_relaxed (nullptr); + + if (!is_valid ()) return; + if (is_CID ()) return; + + } + ~accelerator_t () + { + hb_sorted_vector_t *names = glyph_names.get_relaxed (); + if (names) + { + names->fini (); + hb_free (names); + } + + SUPER::fini (); + } + + bool get_glyph_name (hb_codepoint_t glyph, + char *buf, unsigned int buf_len) const + { + if (unlikely (glyph >= num_glyphs)) return false; + if (unlikely (!is_valid ())) return false; + if (is_CID()) return false; + if (unlikely (!buf_len)) return true; + hb_codepoint_t sid = glyph_to_sid (glyph); + const char *str; + size_t str_len; + if (sid < cff1_std_strings_length) + { + hb_bytes_t byte_str = cff1_std_strings (sid); + str = byte_str.arrayZ; + str_len = byte_str.length; + } + else + { + hb_ubytes_t ubyte_str = (*stringIndex)[sid - cff1_std_strings_length]; + str = (const char *)ubyte_str.arrayZ; + str_len = ubyte_str.length; + } + if (!str_len) return false; + unsigned int len = hb_min (buf_len - 1, str_len); + strncpy (buf, (const char*)str, len); + buf[len] = '\0'; + return true; + } + + bool get_glyph_from_name (const char *name, int len, + hb_codepoint_t *glyph) const + { + if (unlikely (!is_valid ())) return false; + if (is_CID()) return false; + if (len < 0) len = strlen (name); + if (unlikely (!len)) return false; + + retry: + hb_sorted_vector_t *names = glyph_names.get_acquire (); + if (unlikely (!names)) + { + names = (hb_sorted_vector_t *) hb_calloc (sizeof (hb_sorted_vector_t), 1); + if (likely (names)) + { + names->init (); + /* TODO */ + + /* fill glyph names */ + for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++) + { + hb_codepoint_t sid = glyph_to_sid (gid); + gname_t gname; + gname.sid = sid; + if (sid < cff1_std_strings_length) + gname.name = cff1_std_strings (sid); + else + { + hb_ubytes_t ustr = (*stringIndex)[sid - cff1_std_strings_length]; + gname.name = hb_bytes_t ((const char*) ustr.arrayZ, ustr.length); + } + if (unlikely (!gname.name.arrayZ)) + gname.name = hb_bytes_t ("", 0); /* To avoid nullptr. */ + names->push (gname); + } + names->qsort (); + } + if (unlikely (!glyph_names.cmpexch (nullptr, names))) + { + if (names) + { + names->fini (); + hb_free (names); + } + goto retry; + } + } + + gname_t key = { hb_bytes_t (name, len), 0 }; + const gname_t *gname = names ? names->bsearch (key) : nullptr; + if (!gname) return false; + hb_codepoint_t gid = sid_to_glyph (gname->sid); + if (!gid && gname->sid) return false; + *glyph = gid; + return true; + } + + HB_INTERNAL bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const; + HB_INTERNAL bool paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const; + HB_INTERNAL bool get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const; + HB_INTERNAL bool get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const; + + private: + struct gname_t + { + hb_bytes_t name; + uint16_t sid; + + static int cmp (const void *a_, const void *b_) + { + const gname_t *a = (const gname_t *)a_; + const gname_t *b = (const gname_t *)b_; + unsigned minlen = hb_min (a->name.length, b->name.length); + int ret = strncmp (a->name.arrayZ, b->name.arrayZ, minlen); + if (ret) return ret; + return a->name.length - b->name.length; + } + + int cmp (const gname_t &a) const { return cmp (&a, this); } + }; + + mutable hb_atomic_ptr_t> glyph_names; + + typedef accelerator_templ_t SUPER; + }; + + struct accelerator_subset_t : accelerator_templ_t {}; + + bool subset (hb_subset_context_t *c) const { return hb_subset_cff1 (c); } + + protected: + HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_code (hb_codepoint_t sid); + HB_INTERNAL static hb_codepoint_t lookup_expert_encoding_for_code (hb_codepoint_t sid); + HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_sid (hb_codepoint_t glyph); + HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_sid (hb_codepoint_t glyph); + HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_glyph (hb_codepoint_t sid); + HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_glyph (hb_codepoint_t sid); + HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_sid (hb_codepoint_t code); + + public: + FixedVersion version; /* Version of CFF table. set to 0x0100u */ + NNOffsetTo nameIndex; /* headerSize = Offset to Name INDEX. */ + HBUINT8 offSize; /* offset size (unused?) */ + + public: + DEFINE_SIZE_STATIC (4); +}; + +struct cff1_accelerator_t : cff1::accelerator_t { + cff1_accelerator_t (hb_face_t *face) : cff1::accelerator_t (face) {} +}; + +} /* namespace OT */ + +#endif /* HB_OT_CFF1_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-cff2-table.cc b/gfx/harfbuzz/src/hb-ot-cff2-table.cc new file mode 100644 index 0000000000..7955565551 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff2-table.cc @@ -0,0 +1,222 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#include "hb.hh" + +#ifndef HB_NO_OT_FONT_CFF + +#include "hb-ot-cff2-table.hh" +#include "hb-cff2-interp-cs.hh" +#include "hb-draw.hh" + +using namespace CFF; + +struct cff2_extents_param_t +{ + cff2_extents_param_t () + { + min_x.set_int (INT_MAX); + min_y.set_int (INT_MAX); + max_x.set_int (INT_MIN); + max_y.set_int (INT_MIN); + } + + void start_path () { path_open = true; } + void end_path () { path_open = false; } + bool is_path_open () const { return path_open; } + + void update_bounds (const point_t &pt) + { + if (pt.x < min_x) min_x = pt.x; + if (pt.x > max_x) max_x = pt.x; + if (pt.y < min_y) min_y = pt.y; + if (pt.y > max_y) max_y = pt.y; + } + + bool path_open = false; + number_t min_x; + number_t min_y; + number_t max_x; + number_t max_y; +}; + +struct cff2_path_procs_extents_t : path_procs_t, cff2_extents_param_t> +{ + static void moveto (cff2_cs_interp_env_t &env, cff2_extents_param_t& param, const point_t &pt) + { + param.end_path (); + env.moveto (pt); + } + + static void line (cff2_cs_interp_env_t &env, cff2_extents_param_t& param, const point_t &pt1) + { + if (!param.is_path_open ()) + { + param.start_path (); + param.update_bounds (env.get_pt ()); + } + env.moveto (pt1); + param.update_bounds (env.get_pt ()); + } + + static void curve (cff2_cs_interp_env_t &env, cff2_extents_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) + { + if (!param.is_path_open ()) + { + param.start_path (); + param.update_bounds (env.get_pt ()); + } + /* include control points */ + param.update_bounds (pt1); + param.update_bounds (pt2); + env.moveto (pt3); + param.update_bounds (env.get_pt ()); + } +}; + +struct cff2_cs_opset_extents_t : cff2_cs_opset_t {}; + +bool OT::cff2::accelerator_t::get_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents) const +{ +#ifdef HB_NO_OT_FONT_CFF + /* XXX Remove check when this code moves to .hh file. */ + return true; +#endif + + if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false; + + unsigned int fd = fdSelect->get_fd (glyph); + const hb_ubytes_t str = (*charStrings)[glyph]; + cff2_cs_interp_env_t env (str, *this, fd, font->coords, font->num_coords); + cff2_cs_interpreter_t interp (env); + cff2_extents_param_t param; + if (unlikely (!interp.interpret (param))) return false; + + if (param.min_x >= param.max_x) + { + extents->width = 0; + extents->x_bearing = 0; + } + else + { + extents->x_bearing = roundf (param.min_x.to_real ()); + extents->width = roundf (param.max_x.to_real () - extents->x_bearing); + } + if (param.min_y >= param.max_y) + { + extents->height = 0; + extents->y_bearing = 0; + } + else + { + extents->y_bearing = roundf (param.max_y.to_real ()); + extents->height = roundf (param.min_y.to_real () - extents->y_bearing); + } + + font->scale_glyph_extents (extents); + + return true; +} + +bool OT::cff2::accelerator_t::paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const +{ + funcs->push_clip_glyph (data, glyph, font); + funcs->color (data, true, foreground); + funcs->pop_clip (data); + + return true; +} + +struct cff2_path_param_t +{ + cff2_path_param_t (hb_font_t *font_, hb_draw_session_t &draw_session_) + { + draw_session = &draw_session_; + font = font_; + } + + void move_to (const point_t &p) + { draw_session->move_to (font->em_fscalef_x (p.x.to_real ()), font->em_fscalef_y (p.y.to_real ())); } + + void line_to (const point_t &p) + { draw_session->line_to (font->em_fscalef_x (p.x.to_real ()), font->em_fscalef_y (p.y.to_real ())); } + + void cubic_to (const point_t &p1, const point_t &p2, const point_t &p3) + { + draw_session->cubic_to (font->em_fscalef_x (p1.x.to_real ()), font->em_fscalef_y (p1.y.to_real ()), + font->em_fscalef_x (p2.x.to_real ()), font->em_fscalef_y (p2.y.to_real ()), + font->em_fscalef_x (p3.x.to_real ()), font->em_fscalef_y (p3.y.to_real ())); + } + + protected: + hb_draw_session_t *draw_session; + hb_font_t *font; +}; + +struct cff2_path_procs_path_t : path_procs_t, cff2_path_param_t> +{ + static void moveto (cff2_cs_interp_env_t &env, cff2_path_param_t& param, const point_t &pt) + { + param.move_to (pt); + env.moveto (pt); + } + + static void line (cff2_cs_interp_env_t &env, cff2_path_param_t& param, const point_t &pt1) + { + param.line_to (pt1); + env.moveto (pt1); + } + + static void curve (cff2_cs_interp_env_t &env, cff2_path_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) + { + param.cubic_to (pt1, pt2, pt3); + env.moveto (pt3); + } +}; + +struct cff2_cs_opset_path_t : cff2_cs_opset_t {}; + +bool OT::cff2::accelerator_t::get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const +{ +#ifdef HB_NO_OT_FONT_CFF + /* XXX Remove check when this code moves to .hh file. */ + return true; +#endif + + if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false; + + unsigned int fd = fdSelect->get_fd (glyph); + const hb_ubytes_t str = (*charStrings)[glyph]; + cff2_cs_interp_env_t env (str, *this, fd, font->coords, font->num_coords); + cff2_cs_interpreter_t interp (env); + cff2_path_param_t param (font, draw_session); + if (unlikely (!interp.interpret (param))) return false; + return true; +} + +#endif diff --git a/gfx/harfbuzz/src/hb-ot-cff2-table.hh b/gfx/harfbuzz/src/hb-ot-cff2-table.hh new file mode 100644 index 0000000000..2134d48660 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cff2-table.hh @@ -0,0 +1,540 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_OT_CFF2_TABLE_HH +#define HB_OT_CFF2_TABLE_HH + +#include "hb-ot-cff-common.hh" +#include "hb-subset-cff2.hh" +#include "hb-draw.hh" +#include "hb-paint.hh" + +namespace CFF { + +/* + * CFF2 -- Compact Font Format (CFF) Version 2 + * https://docs.microsoft.com/en-us/typography/opentype/spec/cff2 + */ +#define HB_OT_TAG_CFF2 HB_TAG('C','F','F','2') + +typedef CFFIndex CFF2Index; +template struct CFF2IndexOf : CFFIndexOf {}; + +typedef CFF2Index CFF2CharStrings; +typedef Subrs CFF2Subrs; + +typedef FDSelect3_4 FDSelect4; +typedef FDSelect3_4_Range FDSelect4_Range; + +struct CFF2FDSelect +{ + bool serialize (hb_serialize_context_t *c, const CFF2FDSelect &src, unsigned int num_glyphs) + { + TRACE_SERIALIZE (this); + unsigned int size = src.get_size (num_glyphs); + CFF2FDSelect *dest = c->allocate_size (size); + if (unlikely (!dest)) return_trace (false); + hb_memcpy (dest, &src, size); + return_trace (true); + } + + unsigned int get_size (unsigned int num_glyphs) const + { + switch (format) + { + case 0: return format.static_size + u.format0.get_size (num_glyphs); + case 3: return format.static_size + u.format3.get_size (); + case 4: return format.static_size + u.format4.get_size (); + default:return 0; + } + } + + hb_codepoint_t get_fd (hb_codepoint_t glyph) const + { + if (this == &Null (CFF2FDSelect)) + return 0; + + switch (format) + { + case 0: return u.format0.get_fd (glyph); + case 3: return u.format3.get_fd (glyph); + case 4: return u.format4.get_fd (glyph); + default:return 0; + } + } + + bool sanitize (hb_sanitize_context_t *c, unsigned int fdcount) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + switch (format) + { + case 0: return_trace (u.format0.sanitize (c, fdcount)); + case 3: return_trace (u.format3.sanitize (c, fdcount)); + case 4: return_trace (u.format4.sanitize (c, fdcount)); + default:return_trace (false); + } + } + + HBUINT8 format; + union { + FDSelect0 format0; + FDSelect3 format3; + FDSelect4 format4; + } u; + public: + DEFINE_SIZE_MIN (2); +}; + +struct CFF2VariationStore +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this)) && c->check_range (&varStore, size) && varStore.sanitize (c)); + } + + bool serialize (hb_serialize_context_t *c, const CFF2VariationStore *varStore) + { + TRACE_SERIALIZE (this); + unsigned int size_ = varStore->get_size (); + CFF2VariationStore *dest = c->allocate_size (size_); + if (unlikely (!dest)) return_trace (false); + hb_memcpy (dest, varStore, size_); + return_trace (true); + } + + unsigned int get_size () const { return HBUINT16::static_size + size; } + + HBUINT16 size; + VariationStore varStore; + + DEFINE_SIZE_MIN (2 + VariationStore::min_size); +}; + +struct cff2_top_dict_values_t : top_dict_values_t<> +{ + void init () + { + top_dict_values_t<>::init (); + vstoreOffset = 0; + FDSelectOffset = 0; + } + void fini () { top_dict_values_t<>::fini (); } + + unsigned int vstoreOffset; + unsigned int FDSelectOffset; +}; + +struct cff2_top_dict_opset_t : top_dict_opset_t<> +{ + static void process_op (op_code_t op, num_interp_env_t& env, cff2_top_dict_values_t& dictval) + { + switch (op) { + case OpCode_FontMatrix: + { + dict_val_t val; + val.init (); + dictval.add_op (op, env.str_ref); + env.clear_args (); + } + break; + + case OpCode_vstore: + dictval.vstoreOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_FDSelect: + dictval.FDSelectOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + SUPER::process_op (op, env, dictval); + /* Record this operand below if stack is empty, otherwise done */ + if (!env.argStack.is_empty ()) return; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref); + } + + typedef top_dict_opset_t<> SUPER; +}; + +struct cff2_font_dict_values_t : dict_values_t +{ + void init () + { + dict_values_t::init (); + privateDictInfo.init (); + } + void fini () { dict_values_t::fini (); } + + table_info_t privateDictInfo; +}; + +struct cff2_font_dict_opset_t : dict_opset_t +{ + static void process_op (op_code_t op, num_interp_env_t& env, cff2_font_dict_values_t& dictval) + { + switch (op) { + case OpCode_Private: + dictval.privateDictInfo.offset = env.argStack.pop_uint (); + dictval.privateDictInfo.size = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + SUPER::process_op (op, env); + if (!env.argStack.is_empty ()) + return; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref); + } + + private: + typedef dict_opset_t SUPER; +}; + +template +struct cff2_private_dict_values_base_t : dict_values_t +{ + void init () + { + dict_values_t::init (); + subrsOffset = 0; + localSubrs = &Null (CFF2Subrs); + ivs = 0; + } + void fini () { dict_values_t::fini (); } + + unsigned int subrsOffset; + const CFF2Subrs *localSubrs; + unsigned int ivs; +}; + +typedef cff2_private_dict_values_base_t cff2_private_dict_values_subset_t; +typedef cff2_private_dict_values_base_t cff2_private_dict_values_t; + +struct cff2_priv_dict_interp_env_t : num_interp_env_t +{ + cff2_priv_dict_interp_env_t (const hb_ubytes_t &str) : + num_interp_env_t (str) {} + + void process_vsindex () + { + if (likely (!seen_vsindex)) + { + set_ivs (argStack.pop_uint ()); + } + seen_vsindex = true; + } + + unsigned int get_ivs () const { return ivs; } + void set_ivs (unsigned int ivs_) { ivs = ivs_; } + + protected: + unsigned int ivs = 0; + bool seen_vsindex = false; +}; + +struct cff2_private_dict_opset_t : dict_opset_t +{ + static void process_op (op_code_t op, cff2_priv_dict_interp_env_t& env, cff2_private_dict_values_t& dictval) + { + num_dict_val_t val; + val.init (); + + switch (op) { + case OpCode_StdHW: + case OpCode_StdVW: + case OpCode_BlueScale: + case OpCode_BlueShift: + case OpCode_BlueFuzz: + case OpCode_ExpansionFactor: + case OpCode_LanguageGroup: + case OpCode_BlueValues: + case OpCode_OtherBlues: + case OpCode_FamilyBlues: + case OpCode_FamilyOtherBlues: + case OpCode_StemSnapH: + case OpCode_StemSnapV: + env.clear_args (); + break; + case OpCode_Subrs: + dictval.subrsOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + case OpCode_vsindexdict: + env.process_vsindex (); + dictval.ivs = env.get_ivs (); + env.clear_args (); + break; + case OpCode_blenddict: + break; + + default: + dict_opset_t::process_op (op, env); + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref, val); + } +}; + +struct cff2_private_dict_opset_subset_t : dict_opset_t +{ + static void process_op (op_code_t op, cff2_priv_dict_interp_env_t& env, cff2_private_dict_values_subset_t& dictval) + { + switch (op) { + case OpCode_BlueValues: + case OpCode_OtherBlues: + case OpCode_FamilyBlues: + case OpCode_FamilyOtherBlues: + case OpCode_StdHW: + case OpCode_StdVW: + case OpCode_BlueScale: + case OpCode_BlueShift: + case OpCode_BlueFuzz: + case OpCode_StemSnapH: + case OpCode_StemSnapV: + case OpCode_LanguageGroup: + case OpCode_ExpansionFactor: + env.clear_args (); + break; + + case OpCode_blenddict: + env.clear_args (); + return; + + case OpCode_Subrs: + dictval.subrsOffset = env.argStack.pop_uint (); + env.clear_args (); + break; + + default: + SUPER::process_op (op, env); + if (!env.argStack.is_empty ()) return; + break; + } + + if (unlikely (env.in_error ())) return; + + dictval.add_op (op, env.str_ref); + } + + private: + typedef dict_opset_t SUPER; +}; + +typedef dict_interpreter_t cff2_top_dict_interpreter_t; +typedef dict_interpreter_t cff2_font_dict_interpreter_t; + +struct CFF2FDArray : FDArray +{ + /* FDArray::serialize does not compile without this partial specialization */ + template + bool serialize (hb_serialize_context_t *c, ITER it, OP_SERIALIZER& opszr) + { return FDArray::serialize (c, it, opszr); } +}; + +} /* namespace CFF */ + +namespace OT { + +using namespace CFF; + +struct cff2 +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_CFF2; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (version.major == 2)); + } + + template + struct accelerator_templ_t + { + accelerator_templ_t (hb_face_t *face) + { + topDict.init (); + fontDicts.init (); + privateDicts.init (); + + this->blob = sc.reference_table (face); + + /* setup for run-time santization */ + sc.init (this->blob); + sc.start_processing (); + + const OT::cff2 *cff2 = this->blob->template as (); + + if (cff2 == &Null (OT::cff2)) + goto fail; + + { /* parse top dict */ + hb_ubytes_t topDictStr = (cff2 + cff2->topDict).as_ubytes (cff2->topDictSize); + if (unlikely (!topDictStr.sanitize (&sc))) goto fail; + num_interp_env_t env (topDictStr); + cff2_top_dict_interpreter_t top_interp (env); + topDict.init (); + if (unlikely (!top_interp.interpret (topDict))) goto fail; + } + + globalSubrs = &StructAtOffset (cff2, cff2->topDict + cff2->topDictSize); + varStore = &StructAtOffsetOrNull (cff2, topDict.vstoreOffset); + charStrings = &StructAtOffsetOrNull (cff2, topDict.charStringsOffset); + fdArray = &StructAtOffsetOrNull (cff2, topDict.FDArrayOffset); + fdSelect = &StructAtOffsetOrNull (cff2, topDict.FDSelectOffset); + + if (((varStore != &Null (CFF2VariationStore)) && unlikely (!varStore->sanitize (&sc))) || + (charStrings == &Null (CFF2CharStrings)) || unlikely (!charStrings->sanitize (&sc)) || + (globalSubrs == &Null (CFF2Subrs)) || unlikely (!globalSubrs->sanitize (&sc)) || + (fdArray == &Null (CFF2FDArray)) || unlikely (!fdArray->sanitize (&sc)) || + (((fdSelect != &Null (CFF2FDSelect)) && unlikely (!fdSelect->sanitize (&sc, fdArray->count))))) + goto fail; + + num_glyphs = charStrings->count; + if (num_glyphs != sc.get_num_glyphs ()) + goto fail; + + fdCount = fdArray->count; + if (!privateDicts.resize (fdCount)) + goto fail; + + /* parse font dicts and gather private dicts */ + for (unsigned int i = 0; i < fdCount; i++) + { + const hb_ubytes_t fontDictStr = (*fdArray)[i]; + if (unlikely (!fontDictStr.sanitize (&sc))) goto fail; + cff2_font_dict_values_t *font; + num_interp_env_t env (fontDictStr); + cff2_font_dict_interpreter_t font_interp (env); + font = fontDicts.push (); + if (unlikely (font == &Crap (cff2_font_dict_values_t))) goto fail; + font->init (); + if (unlikely (!font_interp.interpret (*font))) goto fail; + + const hb_ubytes_t privDictStr = StructAtOffsetOrNull (cff2, font->privateDictInfo.offset).as_ubytes (font->privateDictInfo.size); + if (unlikely (!privDictStr.sanitize (&sc))) goto fail; + cff2_priv_dict_interp_env_t env2 (privDictStr); + dict_interpreter_t priv_interp (env2); + privateDicts[i].init (); + if (unlikely (!priv_interp.interpret (privateDicts[i]))) goto fail; + + privateDicts[i].localSubrs = &StructAtOffsetOrNull (&privDictStr[0], privateDicts[i].subrsOffset); + if (privateDicts[i].localSubrs != &Null (CFF2Subrs) && + unlikely (!privateDicts[i].localSubrs->sanitize (&sc))) + goto fail; + } + + + return; + + fail: + _fini (); + } + ~accelerator_templ_t () { _fini (); } + void _fini () + { + sc.end_processing (); + topDict.fini (); + fontDicts.fini (); + privateDicts.fini (); + hb_blob_destroy (blob); + blob = nullptr; + } + + hb_map_t *create_glyph_to_sid_map () const + { + return nullptr; + } + + bool is_valid () const { return blob; } + + protected: + hb_sanitize_context_t sc; + + public: + hb_blob_t *blob = nullptr; + cff2_top_dict_values_t topDict; + const CFF2Subrs *globalSubrs = nullptr; + const CFF2VariationStore *varStore = nullptr; + const CFF2CharStrings *charStrings = nullptr; + const CFF2FDArray *fdArray = nullptr; + const CFF2FDSelect *fdSelect = nullptr; + unsigned int fdCount = 0; + + hb_vector_t fontDicts; + hb_vector_t privateDicts; + + unsigned int num_glyphs = 0; + }; + + struct accelerator_t : accelerator_templ_t + { + accelerator_t (hb_face_t *face) : accelerator_templ_t (face) {} + + HB_INTERNAL bool get_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents) const; + HB_INTERNAL bool paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const; + HB_INTERNAL bool get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const; + }; + + typedef accelerator_templ_t accelerator_subset_t; + + bool subset (hb_subset_context_t *c) const { return hb_subset_cff2 (c); } + + public: + FixedVersion version; /* Version of CFF2 table. set to 0x0200u */ + NNOffsetTo topDict; /* headerSize = Offset to Top DICT. */ + HBUINT16 topDictSize; /* Top DICT size */ + + public: + DEFINE_SIZE_STATIC (5); +}; + +struct cff2_accelerator_t : cff2::accelerator_t { + cff2_accelerator_t (hb_face_t *face) : cff2::accelerator_t (face) {} +}; + +} /* namespace OT */ + +#endif /* HB_OT_CFF2_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-cmap-table.hh b/gfx/harfbuzz/src/hb-ot-cmap-table.hh new file mode 100644 index 0000000000..cf5ccd53e9 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-cmap-table.hh @@ -0,0 +1,2093 @@ +/* + * Copyright © 2014 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_CMAP_TABLE_HH +#define HB_OT_CMAP_TABLE_HH + +#include "hb-ot-os2-table.hh" +#include "hb-ot-shaper-arabic-pua.hh" +#include "hb-open-type.hh" +#include "hb-set.hh" +#include "hb-cache.hh" + +/* + * cmap -- Character to Glyph Index Mapping + * https://docs.microsoft.com/en-us/typography/opentype/spec/cmap + */ +#define HB_OT_TAG_cmap HB_TAG('c','m','a','p') + +namespace OT { + + +struct CmapSubtableFormat0 +{ + bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const + { + hb_codepoint_t gid = codepoint < 256 ? glyphIdArray[codepoint] : 0; + if (unlikely (!gid)) + return false; + *glyph = gid; + return true; + } + + unsigned get_language () const + { + return language; + } + + void collect_unicodes (hb_set_t *out) const + { + for (unsigned int i = 0; i < 256; i++) + if (glyphIdArray[i]) + out->add (i); + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + for (unsigned i = 0; i < 256; i++) + if (glyphIdArray[i]) + { + hb_codepoint_t glyph = glyphIdArray[i]; + unicodes->add (i); + mapping->set (i, glyph); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 format; /* Format number is set to 0. */ + HBUINT16 length; /* Byte length of this subtable. */ + HBUINT16 language; /* Ignore. */ + HBUINT8 glyphIdArray[256];/* An array that maps character + * code to glyph index values. */ + public: + DEFINE_SIZE_STATIC (6 + 256); +}; + +struct CmapSubtableFormat4 +{ + + + template + void to_ranges (Iterator it, Writer& range_writer) + { + hb_codepoint_t start_cp = 0, prev_run_start_cp = 0, run_start_cp = 0, end_cp = 0, last_gid = 0; + int run_length = 0 , delta = 0, prev_delta = 0; + + enum { + FIRST_SUB_RANGE, + FOLLOWING_SUB_RANGE, + } mode; + + while (it) { + // Start a new range + { + const auto& pair = *it; + start_cp = pair.first; + prev_run_start_cp = start_cp; + run_start_cp = start_cp; + end_cp = start_cp; + last_gid = pair.second; + run_length = 1; + prev_delta = 0; + } + + delta = last_gid - start_cp; + mode = FIRST_SUB_RANGE; + it++; + + while (it) { + // Process range + const auto& pair = *it; + hb_codepoint_t next_cp = pair.first; + hb_codepoint_t next_gid = pair.second; + if (next_cp != end_cp + 1) { + // Current range is over, stop processing. + break; + } + + if (next_gid == last_gid + 1) { + // The current run continues. + end_cp = next_cp; + run_length++; + last_gid = next_gid; + it++; + continue; + } + + // A new run is starting, decide if we want to commit the current run. + int split_cost = (mode == FIRST_SUB_RANGE) ? 8 : 16; + int run_cost = run_length * 2; + if (run_cost >= split_cost) { + commit_current_range(start_cp, + prev_run_start_cp, + run_start_cp, + end_cp, + delta, + prev_delta, + split_cost, + range_writer); + start_cp = next_cp; + } + + // Start the new run + mode = FOLLOWING_SUB_RANGE; + prev_run_start_cp = run_start_cp; + run_start_cp = next_cp; + end_cp = next_cp; + prev_delta = delta; + delta = next_gid - run_start_cp; + run_length = 1; + last_gid = next_gid; + it++; + } + + // Finalize range + commit_current_range (start_cp, + prev_run_start_cp, + run_start_cp, + end_cp, + delta, + prev_delta, + 8, + range_writer); + } + + if (likely (end_cp != 0xFFFF)) { + range_writer (0xFFFF, 0xFFFF, 1); + } + } + + /* + * Writes the current range as either one or two ranges depending on what is most efficient. + */ + template + void commit_current_range (hb_codepoint_t start, + hb_codepoint_t prev_run_start, + hb_codepoint_t run_start, + hb_codepoint_t end, + int run_delta, + int previous_run_delta, + int split_cost, + Writer& range_writer) { + bool should_split = false; + if (start < run_start && run_start < end) { + int run_cost = (end - run_start + 1) * 2; + if (run_cost >= split_cost) { + should_split = true; + } + } + + // TODO(grieger): handle case where delta is legitimately 0, mark range offset array instead? + if (should_split) { + if (start == prev_run_start) + range_writer (start, run_start - 1, previous_run_delta); + else + range_writer (start, run_start - 1, 0); + range_writer (run_start, end, run_delta); + return; + } + + + if (start == run_start) { + // Range is only a run + range_writer (start, end, run_delta); + return; + } + + // Write only a single non-run range. + range_writer (start, end, 0); + } + + template + unsigned serialize_find_segcount (Iterator it) { + struct Counter { + unsigned segcount = 0; + + void operator() (hb_codepoint_t start, + hb_codepoint_t end, + int delta) { + segcount++; + } + } counter; + + to_ranges (+it, counter); + return counter.segcount; + } + + + template + bool serialize_start_end_delta_arrays (hb_serialize_context_t *c, + Iterator it, + int segcount) + { + struct Writer { + hb_serialize_context_t *serializer_; + HBUINT16* end_code_; + HBUINT16* start_code_; + HBINT16* id_delta_; + int index_; + + Writer(hb_serialize_context_t *serializer) + : serializer_(serializer), + end_code_(nullptr), + start_code_(nullptr), + id_delta_(nullptr), + index_ (0) {} + void operator() (hb_codepoint_t start, + hb_codepoint_t end, + int delta) { + start_code_[index_] = start; + end_code_[index_] = end; + id_delta_[index_] = delta; + index_++; + } + } writer(c); + + writer.end_code_ = c->allocate_size (HBUINT16::static_size * segcount); + c->allocate_size (2); // padding + writer.start_code_ = c->allocate_size (HBUINT16::static_size * segcount); + writer.id_delta_ = c->allocate_size (HBINT16::static_size * segcount); + + if (unlikely (!writer.end_code_ || !writer.start_code_ || !writer.id_delta_)) return false; + + to_ranges (+it, writer); + return true; + } + + template + HBUINT16* serialize_rangeoffset_glyid (hb_serialize_context_t *c, + Iterator it, + HBUINT16 *endCode, + HBUINT16 *startCode, + HBINT16 *idDelta, + unsigned segcount) + { + hb_map_t cp_to_gid { it }; + + HBUINT16 *idRangeOffset = c->allocate_size (HBUINT16::static_size * segcount); + if (unlikely (!c->check_success (idRangeOffset))) return nullptr; + if (unlikely ((char *)idRangeOffset - (char *)idDelta != (int) segcount * (int) HBINT16::static_size)) return nullptr; + + for (unsigned i : + hb_range (segcount) + | hb_filter ([&] (const unsigned _) { return idDelta[_] == 0; })) + { + idRangeOffset[i] = 2 * (c->start_embed () - idRangeOffset - i); + for (hb_codepoint_t cp = startCode[i]; cp <= endCode[i]; cp++) + { + HBUINT16 gid; + gid = cp_to_gid[cp]; + c->copy (gid); + } + } + + return idRangeOffset; + } + + template + void serialize (hb_serialize_context_t *c, + Iterator it) + { + auto format4_iter = + + it + | hb_filter ([&] (const hb_pair_t _) + { return _.first <= 0xFFFF; }) + ; + + if (!format4_iter) return; + + unsigned table_initpos = c->length (); + if (unlikely (!c->extend_min (this))) return; + this->format = 4; + + hb_vector_t> cp_to_gid { + format4_iter + }; + + //serialize endCode[], startCode[], idDelta[] + HBUINT16* endCode = c->start_embed (); + unsigned segcount = serialize_find_segcount (cp_to_gid.iter()); + if (unlikely (!serialize_start_end_delta_arrays (c, cp_to_gid.iter(), segcount))) + return; + + HBUINT16 *startCode = endCode + segcount + 1; + HBINT16 *idDelta = ((HBINT16*)startCode) + segcount; + + HBUINT16 *idRangeOffset = serialize_rangeoffset_glyid (c, + cp_to_gid.iter (), + endCode, + startCode, + idDelta, + segcount); + if (unlikely (!c->check_success (idRangeOffset))) return; + + this->length = c->length () - table_initpos; + if ((long long) this->length != (long long) c->length () - table_initpos) + { + // Length overflowed. Discard the current object before setting the error condition, otherwise + // discard is a noop which prevents the higher level code from reverting the serializer to the + // pre-error state in cmap4 overflow handling code. + c->pop_discard (); + c->err (HB_SERIALIZE_ERROR_INT_OVERFLOW); + return; + } + + this->segCountX2 = segcount * 2; + this->entrySelector = hb_max (1u, hb_bit_storage (segcount)) - 1; + this->searchRange = 2 * (1u << this->entrySelector); + this->rangeShift = segcount * 2 > this->searchRange + ? 2 * segcount - this->searchRange + : 0; + } + + unsigned get_language () const + { + return language; + } + + struct accelerator_t + { + accelerator_t () {} + accelerator_t (const CmapSubtableFormat4 *subtable) { init (subtable); } + + void init (const CmapSubtableFormat4 *subtable) + { + segCount = subtable->segCountX2 / 2; + endCount = subtable->values.arrayZ; + startCount = endCount + segCount + 1; + idDelta = startCount + segCount; + idRangeOffset = idDelta + segCount; + glyphIdArray = idRangeOffset + segCount; + glyphIdArrayLength = (subtable->length - 16 - 8 * segCount) / 2; + } + + bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const + { + struct CustomRange + { + int cmp (hb_codepoint_t k, + unsigned distance) const + { + if (k > last) return +1; + if (k < (&last)[distance]/*first*/) return -1; + return 0; + } + HBUINT16 last; + }; + + const HBUINT16 *found = hb_bsearch (codepoint, + this->endCount, + this->segCount, + sizeof (CustomRange), + _hb_cmp_method, + this->segCount + 1); + if (unlikely (!found)) + return false; + unsigned int i = found - endCount; + + hb_codepoint_t gid; + unsigned int rangeOffset = this->idRangeOffset[i]; + if (rangeOffset == 0) + gid = codepoint + this->idDelta[i]; + else + { + /* Somebody has been smoking... */ + unsigned int index = rangeOffset / 2 + (codepoint - this->startCount[i]) + i - this->segCount; + if (unlikely (index >= this->glyphIdArrayLength)) + return false; + gid = this->glyphIdArray[index]; + if (unlikely (!gid)) + return false; + gid += this->idDelta[i]; + } + gid &= 0xFFFFu; + if (unlikely (!gid)) + return false; + *glyph = gid; + return true; + } + + HB_INTERNAL static bool get_glyph_func (const void *obj, hb_codepoint_t codepoint, hb_codepoint_t *glyph) + { return ((const accelerator_t *) obj)->get_glyph (codepoint, glyph); } + + void collect_unicodes (hb_set_t *out) const + { + unsigned int count = this->segCount; + if (count && this->startCount[count - 1] == 0xFFFFu) + count--; /* Skip sentinel segment. */ + for (unsigned int i = 0; i < count; i++) + { + hb_codepoint_t start = this->startCount[i]; + hb_codepoint_t end = this->endCount[i]; + unsigned int rangeOffset = this->idRangeOffset[i]; + out->add_range(start, end); + if (rangeOffset == 0) + { + for (hb_codepoint_t codepoint = start; codepoint <= end; codepoint++) + { + hb_codepoint_t gid = (codepoint + this->idDelta[i]) & 0xFFFFu; + if (unlikely (!gid)) + out->del(codepoint); + } + } + else + { + for (hb_codepoint_t codepoint = start; codepoint <= end; codepoint++) + { + unsigned int index = rangeOffset / 2 + (codepoint - this->startCount[i]) + i - this->segCount; + if (unlikely (index >= this->glyphIdArrayLength)) + { + out->del_range (codepoint, end); + break; + } + hb_codepoint_t gid = this->glyphIdArray[index]; + if (unlikely (!gid)) + out->del(codepoint); + } + } + } + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + // TODO(grieger): optimize similar to collect_unicodes + // (ie. use add_range()) + unsigned count = this->segCount; + if (count && this->startCount[count - 1] == 0xFFFFu) + count--; /* Skip sentinel segment. */ + for (unsigned i = 0; i < count; i++) + { + hb_codepoint_t start = this->startCount[i]; + hb_codepoint_t end = this->endCount[i]; + unsigned rangeOffset = this->idRangeOffset[i]; + if (rangeOffset == 0) + { + for (hb_codepoint_t codepoint = start; codepoint <= end; codepoint++) + { + hb_codepoint_t gid = (codepoint + this->idDelta[i]) & 0xFFFFu; + if (unlikely (!gid)) + continue; + unicodes->add (codepoint); + mapping->set (codepoint, gid); + } + } + else + { + for (hb_codepoint_t codepoint = start; codepoint <= end; codepoint++) + { + unsigned index = rangeOffset / 2 + (codepoint - this->startCount[i]) + i - this->segCount; + if (unlikely (index >= this->glyphIdArrayLength)) + break; + hb_codepoint_t gid = this->glyphIdArray[index]; + if (unlikely (!gid)) + continue; + unicodes->add (codepoint); + mapping->set (codepoint, gid); + } + } + } + } + + const HBUINT16 *endCount; + const HBUINT16 *startCount; + const HBUINT16 *idDelta; + const HBUINT16 *idRangeOffset; + const HBUINT16 *glyphIdArray; + unsigned int segCount; + unsigned int glyphIdArrayLength; + }; + + bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const + { + accelerator_t accel (this); + return accel.get_glyph_func (&accel, codepoint, glyph); + } + void collect_unicodes (hb_set_t *out) const + { + accelerator_t accel (this); + accel.collect_unicodes (out); + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + accelerator_t accel (this); + accel.collect_mapping (unicodes, mapping); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + if (unlikely (!c->check_range (this, length))) + { + /* Some broken fonts have too long of a "length" value. + * If that is the case, just change the value to truncate + * the subtable at the end of the blob. */ + uint16_t new_length = (uint16_t) hb_min ((uintptr_t) 65535, + (uintptr_t) (c->end - + (char *) this)); + if (!c->try_set (&length, new_length)) + return_trace (false); + } + + return_trace (16 + 4 * (unsigned int) segCountX2 <= length); + } + + + + protected: + HBUINT16 format; /* Format number is set to 4. */ + HBUINT16 length; /* This is the length in bytes of the + * subtable. */ + HBUINT16 language; /* Ignore. */ + HBUINT16 segCountX2; /* 2 x segCount. */ + HBUINT16 searchRange; /* 2 * (2**floor(log2(segCount))) */ + HBUINT16 entrySelector; /* log2(searchRange/2) */ + HBUINT16 rangeShift; /* 2 x segCount - searchRange */ + + UnsizedArrayOf + values; +#if 0 + HBUINT16 endCount[segCount]; /* End characterCode for each segment, + * last=0xFFFFu. */ + HBUINT16 reservedPad; /* Set to 0. */ + HBUINT16 startCount[segCount]; /* Start character code for each segment. */ + HBINT16 idDelta[segCount]; /* Delta for all character codes in segment. */ + HBUINT16 idRangeOffset[segCount];/* Offsets into glyphIdArray or 0 */ + UnsizedArrayOf + glyphIdArray; /* Glyph index array (arbitrary length) */ +#endif + + public: + DEFINE_SIZE_ARRAY (14, values); +}; + +struct CmapSubtableLongGroup +{ + friend struct CmapSubtableFormat12; + friend struct CmapSubtableFormat13; + template + friend struct CmapSubtableLongSegmented; + friend struct cmap; + + int cmp (hb_codepoint_t codepoint) const + { + if (codepoint < startCharCode) return -1; + if (codepoint > endCharCode) return +1; + return 0; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + private: + HBUINT32 startCharCode; /* First character code in this group. */ + HBUINT32 endCharCode; /* Last character code in this group. */ + HBUINT32 glyphID; /* Glyph index; interpretation depends on + * subtable format. */ + public: + DEFINE_SIZE_STATIC (12); +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup); + +template +struct CmapSubtableTrimmed +{ + bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const + { + /* Rely on our implicit array bound-checking. */ + hb_codepoint_t gid = glyphIdArray[codepoint - startCharCode]; + if (unlikely (!gid)) + return false; + *glyph = gid; + return true; + } + + unsigned get_language () const + { + return language; + } + + void collect_unicodes (hb_set_t *out) const + { + hb_codepoint_t start = startCharCode; + unsigned int count = glyphIdArray.len; + for (unsigned int i = 0; i < count; i++) + if (glyphIdArray[i]) + out->add (start + i); + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + hb_codepoint_t start_cp = startCharCode; + unsigned count = glyphIdArray.len; + for (unsigned i = 0; i < count; i++) + if (glyphIdArray[i]) + { + hb_codepoint_t unicode = start_cp + i; + hb_codepoint_t glyphid = glyphIdArray[i]; + unicodes->add (unicode); + mapping->set (unicode, glyphid); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && glyphIdArray.sanitize (c)); + } + + protected: + UINT formatReserved; /* Subtable format and (maybe) padding. */ + UINT length; /* Byte length of this subtable. */ + UINT language; /* Ignore. */ + UINT startCharCode; /* First character code covered. */ + ArrayOf + glyphIdArray; /* Array of glyph index values for character + * codes in the range. */ + public: + DEFINE_SIZE_ARRAY (5 * sizeof (UINT), glyphIdArray); +}; + +struct CmapSubtableFormat6 : CmapSubtableTrimmed {}; +struct CmapSubtableFormat10 : CmapSubtableTrimmed {}; + +template +struct CmapSubtableLongSegmented +{ + friend struct cmap; + + bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const + { + hb_codepoint_t gid = T::group_get_glyph (groups.bsearch (codepoint), codepoint); + if (unlikely (!gid)) + return false; + *glyph = gid; + return true; + } + + unsigned get_language () const + { + return language; + } + + void collect_unicodes (hb_set_t *out, unsigned int num_glyphs) const + { + for (unsigned int i = 0; i < this->groups.len; i++) + { + hb_codepoint_t start = this->groups[i].startCharCode; + hb_codepoint_t end = hb_min ((hb_codepoint_t) this->groups[i].endCharCode, + (hb_codepoint_t) HB_UNICODE_MAX); + hb_codepoint_t gid = this->groups[i].glyphID; + if (!gid) + { + /* Intention is: if (hb_is_same (T, CmapSubtableFormat13)) continue; */ + if (! T::group_get_glyph (this->groups[i], end)) continue; + start++; + gid++; + } + if (unlikely ((unsigned int) gid >= num_glyphs)) continue; + if (unlikely ((unsigned int) (gid + end - start) >= num_glyphs)) + end = start + (hb_codepoint_t) num_glyphs - gid; + + out->add_range (start, hb_min (end, 0x10FFFFu)); + } + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping, /* OUT */ + unsigned num_glyphs) const + { + hb_codepoint_t last_end = 0; + for (unsigned i = 0; i < this->groups.len; i++) + { + hb_codepoint_t start = this->groups[i].startCharCode; + hb_codepoint_t end = hb_min ((hb_codepoint_t) this->groups[i].endCharCode, + (hb_codepoint_t) HB_UNICODE_MAX); + if (unlikely (start > end || start < last_end)) { + // Range is not in order and is invalid, skip it. + continue; + } + last_end = end; + + + hb_codepoint_t gid = this->groups[i].glyphID; + if (!gid) + { + /* Intention is: if (hb_is_same (T, CmapSubtableFormat13)) continue; */ + if (! T::group_get_glyph (this->groups[i], end)) continue; + start++; + gid++; + } + if (unlikely ((unsigned int) gid >= num_glyphs)) continue; + if (unlikely ((unsigned int) (gid + end - start) >= num_glyphs)) + end = start + (hb_codepoint_t) num_glyphs - gid; + + for (unsigned cp = start; cp <= end; cp++) + { + unicodes->add (cp); + mapping->set (cp, gid); + gid++; + } + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && groups.sanitize (c)); + } + + protected: + HBUINT16 format; /* Subtable format; set to 12. */ + HBUINT16 reserved; /* Reserved; set to 0. */ + HBUINT32 length; /* Byte length of this subtable. */ + HBUINT32 language; /* Ignore. */ + SortedArray32Of + groups; /* Groupings. */ + public: + DEFINE_SIZE_ARRAY (16, groups); +}; + +struct CmapSubtableFormat12 : CmapSubtableLongSegmented +{ + static hb_codepoint_t group_get_glyph (const CmapSubtableLongGroup &group, + hb_codepoint_t u) + { return likely (group.startCharCode <= group.endCharCode) ? + group.glyphID + (u - group.startCharCode) : 0; } + + + template + void serialize (hb_serialize_context_t *c, + Iterator it) + { + if (!it) return; + unsigned table_initpos = c->length (); + if (unlikely (!c->extend_min (this))) return; + + hb_codepoint_t startCharCode = (hb_codepoint_t) -1, endCharCode = (hb_codepoint_t) -1; + hb_codepoint_t glyphID = 0; + + for (const auto& _ : +it) + { + if (startCharCode == (hb_codepoint_t) -1) + { + startCharCode = _.first; + endCharCode = _.first; + glyphID = _.second; + } + else if (!_is_gid_consecutive (endCharCode, startCharCode, glyphID, _.first, _.second)) + { + CmapSubtableLongGroup grouprecord; + grouprecord.startCharCode = startCharCode; + grouprecord.endCharCode = endCharCode; + grouprecord.glyphID = glyphID; + c->copy (grouprecord); + + startCharCode = _.first; + endCharCode = _.first; + glyphID = _.second; + } + else + endCharCode = _.first; + } + + CmapSubtableLongGroup record; + record.startCharCode = startCharCode; + record.endCharCode = endCharCode; + record.glyphID = glyphID; + c->copy (record); + + this->format = 12; + this->reserved = 0; + this->length = c->length () - table_initpos; + this->groups.len = (this->length - min_size) / CmapSubtableLongGroup::static_size; + } + + static size_t get_sub_table_size (const hb_sorted_vector_t &groups_data) + { return 16 + 12 * groups_data.length; } + + private: + static bool _is_gid_consecutive (hb_codepoint_t endCharCode, + hb_codepoint_t startCharCode, + hb_codepoint_t glyphID, + hb_codepoint_t cp, + hb_codepoint_t new_gid) + { + return (cp - 1 == endCharCode) && + new_gid == glyphID + (cp - startCharCode); + } + +}; + +struct CmapSubtableFormat13 : CmapSubtableLongSegmented +{ + static hb_codepoint_t group_get_glyph (const CmapSubtableLongGroup &group, + hb_codepoint_t u HB_UNUSED) + { return group.glyphID; } +}; + +typedef enum +{ + GLYPH_VARIANT_NOT_FOUND = 0, + GLYPH_VARIANT_FOUND = 1, + GLYPH_VARIANT_USE_DEFAULT = 2 +} glyph_variant_t; + +struct UnicodeValueRange +{ + int cmp (const hb_codepoint_t &codepoint) const + { + if (codepoint < startUnicodeValue) return -1; + if (codepoint > startUnicodeValue + additionalCount) return +1; + return 0; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT24 startUnicodeValue; /* First value in this range. */ + HBUINT8 additionalCount; /* Number of additional values in this + * range. */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct DefaultUVS : SortedArray32Of +{ + void collect_unicodes (hb_set_t *out) const + { + unsigned int count = len; + for (unsigned int i = 0; i < count; i++) + { + hb_codepoint_t first = arrayZ[i].startUnicodeValue; + hb_codepoint_t last = hb_min ((hb_codepoint_t) (first + arrayZ[i].additionalCount), + (hb_codepoint_t) HB_UNICODE_MAX); + out->add_range (first, last); + } + } + + DefaultUVS* copy (hb_serialize_context_t *c, + const hb_set_t *unicodes) const + { + DefaultUVS *out = c->start_embed (); + if (unlikely (!out)) return nullptr; + auto snap = c->snapshot (); + + HBUINT32 len; + len = 0; + if (unlikely (!c->copy (len))) return nullptr; + unsigned init_len = c->length (); + + if (this->len > unicodes->get_population () * hb_bit_storage ((unsigned) this->len)) + { + hb_codepoint_t start = HB_SET_VALUE_INVALID; + hb_codepoint_t end = HB_SET_VALUE_INVALID; + + for (hb_codepoint_t u = HB_SET_VALUE_INVALID; + unicodes->next (&u);) + { + if (!as_array ().bsearch (u)) + continue; + if (start == HB_SET_VALUE_INVALID) + { + start = u; + end = start - 1; + } + if (end + 1 != u || end - start == 255) + { + UnicodeValueRange rec; + rec.startUnicodeValue = start; + rec.additionalCount = end - start; + c->copy (rec); + start = u; + } + end = u; + } + if (start != HB_SET_VALUE_INVALID) + { + UnicodeValueRange rec; + rec.startUnicodeValue = start; + rec.additionalCount = end - start; + c->copy (rec); + } + + } + else + { + hb_codepoint_t lastCode = HB_SET_VALUE_INVALID; + int count = -1; + + for (const UnicodeValueRange& _ : *this) + { + hb_codepoint_t curEntry = (hb_codepoint_t) (_.startUnicodeValue - 1); + hb_codepoint_t end = curEntry + _.additionalCount + 2; + + for (; unicodes->next (&curEntry) && curEntry < end;) + { + count += 1; + if (lastCode == HB_SET_VALUE_INVALID) + lastCode = curEntry; + else if (lastCode + count != curEntry) + { + UnicodeValueRange rec; + rec.startUnicodeValue = lastCode; + rec.additionalCount = count - 1; + c->copy (rec); + + lastCode = curEntry; + count = 0; + } + } + } + + if (lastCode != HB_MAP_VALUE_INVALID) + { + UnicodeValueRange rec; + rec.startUnicodeValue = lastCode; + rec.additionalCount = count; + c->copy (rec); + } + } + + if (c->length () - init_len == 0) + { + c->revert (snap); + return nullptr; + } + else + { + if (unlikely (!c->check_assign (out->len, + (c->length () - init_len) / UnicodeValueRange::static_size, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) return nullptr; + return out; + } + } + + public: + DEFINE_SIZE_ARRAY (4, *this); +}; + +struct UVSMapping +{ + int cmp (const hb_codepoint_t &codepoint) const + { return unicodeValue.cmp (codepoint); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT24 unicodeValue; /* Base Unicode value of the UVS */ + HBGlyphID16 glyphID; /* Glyph ID of the UVS */ + public: + DEFINE_SIZE_STATIC (5); +}; + +struct NonDefaultUVS : SortedArray32Of +{ + void collect_unicodes (hb_set_t *out) const + { + for (const auto& a : as_array ()) + out->add (a.unicodeValue); + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + for (const auto& a : as_array ()) + { + hb_codepoint_t unicode = a.unicodeValue; + hb_codepoint_t glyphid = a.glyphID; + unicodes->add (unicode); + mapping->set (unicode, glyphid); + } + } + + void closure_glyphs (const hb_set_t *unicodes, + hb_set_t *glyphset) const + { + + as_array () + | hb_filter (unicodes, &UVSMapping::unicodeValue) + | hb_map (&UVSMapping::glyphID) + | hb_sink (glyphset) + ; + } + + NonDefaultUVS* copy (hb_serialize_context_t *c, + const hb_set_t *unicodes, + const hb_set_t *glyphs_requested, + const hb_map_t *glyph_map) const + { + NonDefaultUVS *out = c->start_embed (); + if (unlikely (!out)) return nullptr; + + auto it = + + as_array () + | hb_filter ([&] (const UVSMapping& _) + { + return unicodes->has (_.unicodeValue) || glyphs_requested->has (_.glyphID); + }) + ; + + if (!it) return nullptr; + + HBUINT32 len; + len = it.len (); + if (unlikely (!c->copy (len))) return nullptr; + + for (const UVSMapping& _ : it) + { + UVSMapping mapping; + mapping.unicodeValue = _.unicodeValue; + mapping.glyphID = glyph_map->get (_.glyphID); + c->copy (mapping); + } + + return out; + } + + public: + DEFINE_SIZE_ARRAY (4, *this); +}; + +struct VariationSelectorRecord +{ + glyph_variant_t get_glyph (hb_codepoint_t codepoint, + hb_codepoint_t *glyph, + const void *base) const + { + if ((base+defaultUVS).bfind (codepoint)) + return GLYPH_VARIANT_USE_DEFAULT; + const UVSMapping &nonDefault = (base+nonDefaultUVS).bsearch (codepoint); + if (nonDefault.glyphID) + { + *glyph = nonDefault.glyphID; + return GLYPH_VARIANT_FOUND; + } + return GLYPH_VARIANT_NOT_FOUND; + } + + VariationSelectorRecord(const VariationSelectorRecord& other) + { + *this = other; + } + + void operator= (const VariationSelectorRecord& other) + { + varSelector = other.varSelector; + HBUINT32 offset = other.defaultUVS; + defaultUVS = offset; + offset = other.nonDefaultUVS; + nonDefaultUVS = offset; + } + + void collect_unicodes (hb_set_t *out, const void *base) const + { + (base+defaultUVS).collect_unicodes (out); + (base+nonDefaultUVS).collect_unicodes (out); + } + + void collect_mapping (const void *base, + hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + (base+defaultUVS).collect_unicodes (unicodes); + (base+nonDefaultUVS).collect_mapping (unicodes, mapping); + } + + int cmp (const hb_codepoint_t &variation_selector) const + { return varSelector.cmp (variation_selector); } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + defaultUVS.sanitize (c, base) && + nonDefaultUVS.sanitize (c, base)); + } + + hb_pair_t + copy (hb_serialize_context_t *c, + const hb_set_t *unicodes, + const hb_set_t *glyphs_requested, + const hb_map_t *glyph_map, + const void *base) const + { + auto snap = c->snapshot (); + auto *out = c->embed (*this); + if (unlikely (!out)) return hb_pair (0, 0); + + out->defaultUVS = 0; + out->nonDefaultUVS = 0; + + unsigned non_default_uvs_objidx = 0; + if (nonDefaultUVS != 0) + { + c->push (); + if (c->copy (base+nonDefaultUVS, unicodes, glyphs_requested, glyph_map)) + non_default_uvs_objidx = c->pop_pack (); + else c->pop_discard (); + } + + unsigned default_uvs_objidx = 0; + if (defaultUVS != 0) + { + c->push (); + if (c->copy (base+defaultUVS, unicodes)) + default_uvs_objidx = c->pop_pack (); + else c->pop_discard (); + } + + + if (!default_uvs_objidx && !non_default_uvs_objidx) + c->revert (snap); + + return hb_pair (default_uvs_objidx, non_default_uvs_objidx); + } + + HBUINT24 varSelector; /* Variation selector. */ + Offset32To + defaultUVS; /* Offset to Default UVS Table. May be 0. */ + Offset32To + nonDefaultUVS; /* Offset to Non-Default UVS Table. May be 0. */ + public: + DEFINE_SIZE_STATIC (11); +}; + +struct CmapSubtableFormat14 +{ + glyph_variant_t get_glyph_variant (hb_codepoint_t codepoint, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) const + { return record.bsearch (variation_selector).get_glyph (codepoint, glyph, this); } + + void collect_variation_selectors (hb_set_t *out) const + { + for (const auto& a : record.as_array ()) + out->add (a.varSelector); + } + void collect_variation_unicodes (hb_codepoint_t variation_selector, + hb_set_t *out) const + { record.bsearch (variation_selector).collect_unicodes (out, this); } + + void serialize (hb_serialize_context_t *c, + const hb_set_t *unicodes, + const hb_set_t *glyphs_requested, + const hb_map_t *glyph_map, + const void *base) + { + auto snap = c->snapshot (); + unsigned table_initpos = c->length (); + const char* init_tail = c->tail; + + if (unlikely (!c->extend_min (this))) return; + this->format = 14; + + auto src_tbl = reinterpret_cast (base); + + /* + * Some versions of OTS require that offsets are in order. Due to the use + * of push()/pop_pack() serializing the variation records in order results + * in the offsets being in reverse order (first record has the largest + * offset). While this is perfectly valid, it will cause some versions of + * OTS to consider this table bad. + * + * So to prevent this issue we serialize the variation records in reverse + * order, so that the offsets are ordered from small to large. Since + * variation records are supposed to be in increasing order of varSelector + * we then have to reverse the order of the written variation selector + * records after everything is finalized. + */ + hb_vector_t> obj_indices; + for (int i = src_tbl->record.len - 1; i >= 0; i--) + { + hb_pair_t result = src_tbl->record[i].copy (c, unicodes, glyphs_requested, glyph_map, base); + if (result.first || result.second) + obj_indices.push (result); + } + + if (c->length () - table_initpos == CmapSubtableFormat14::min_size) + { + c->revert (snap); + return; + } + + if (unlikely (!c->check_success (!obj_indices.in_error ()))) + return; + + int tail_len = init_tail - c->tail; + c->check_assign (this->length, c->length () - table_initpos + tail_len, + HB_SERIALIZE_ERROR_INT_OVERFLOW); + c->check_assign (this->record.len, + (c->length () - table_initpos - CmapSubtableFormat14::min_size) / + VariationSelectorRecord::static_size, + HB_SERIALIZE_ERROR_INT_OVERFLOW); + + /* Correct the incorrect write order by reversing the order of the variation + records array. */ + _reverse_variation_records (); + + /* Now that records are in the right order, we can set up the offsets. */ + _add_links_to_variation_records (c, obj_indices); + } + + void _reverse_variation_records () + { + record.as_array ().reverse (); + } + + void _add_links_to_variation_records (hb_serialize_context_t *c, + const hb_vector_t>& obj_indices) + { + for (unsigned i = 0; i < obj_indices.length; i++) + { + /* + * Since the record array has been reversed (see comments in copy()) + * but obj_indices has not been, the indices at obj_indices[i] + * are for the variation record at record[j]. + */ + int j = obj_indices.length - 1 - i; + c->add_link (record[j].defaultUVS, obj_indices[i].first); + c->add_link (record[j].nonDefaultUVS, obj_indices[i].second); + } + } + + void closure_glyphs (const hb_set_t *unicodes, + hb_set_t *glyphset) const + { + + hb_iter (record) + | hb_filter (hb_bool, &VariationSelectorRecord::nonDefaultUVS) + | hb_map (&VariationSelectorRecord::nonDefaultUVS) + | hb_map (hb_add (this)) + | hb_apply ([=] (const NonDefaultUVS& _) { _.closure_glyphs (unicodes, glyphset); }) + ; + } + + void collect_unicodes (hb_set_t *out) const + { + for (const VariationSelectorRecord& _ : record) + _.collect_unicodes (out, this); + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping /* OUT */) const + { + for (const VariationSelectorRecord& _ : record) + _.collect_mapping (this, unicodes, mapping); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + record.sanitize (c, this)); + } + + protected: + HBUINT16 format; /* Format number is set to 14. */ + HBUINT32 length; /* Byte length of this subtable. */ + SortedArray32Of + record; /* Variation selector records; sorted + * in increasing order of `varSelector'. */ + public: + DEFINE_SIZE_ARRAY (10, record); +}; + +struct CmapSubtable +{ + /* Note: We intentionally do NOT implement subtable formats 2 and 8. */ + + bool get_glyph (hb_codepoint_t codepoint, + hb_codepoint_t *glyph) const + { + switch (u.format) { + case 0: return u.format0 .get_glyph (codepoint, glyph); + case 4: return u.format4 .get_glyph (codepoint, glyph); + case 6: return u.format6 .get_glyph (codepoint, glyph); + case 10: return u.format10.get_glyph (codepoint, glyph); + case 12: return u.format12.get_glyph (codepoint, glyph); + case 13: return u.format13.get_glyph (codepoint, glyph); + case 14: + default: return false; + } + } + void collect_unicodes (hb_set_t *out, unsigned int num_glyphs = UINT_MAX) const + { + switch (u.format) { + case 0: u.format0 .collect_unicodes (out); return; + case 4: u.format4 .collect_unicodes (out); return; + case 6: u.format6 .collect_unicodes (out); return; + case 10: u.format10.collect_unicodes (out); return; + case 12: u.format12.collect_unicodes (out, num_glyphs); return; + case 13: u.format13.collect_unicodes (out, num_glyphs); return; + case 14: + default: return; + } + } + + void collect_mapping (hb_set_t *unicodes, /* OUT */ + hb_map_t *mapping, /* OUT */ + unsigned num_glyphs = UINT_MAX) const + { + switch (u.format) { + case 0: u.format0 .collect_mapping (unicodes, mapping); return; + case 4: u.format4 .collect_mapping (unicodes, mapping); return; + case 6: u.format6 .collect_mapping (unicodes, mapping); return; + case 10: u.format10.collect_mapping (unicodes, mapping); return; + case 12: u.format12.collect_mapping (unicodes, mapping, num_glyphs); return; + case 13: u.format13.collect_mapping (unicodes, mapping, num_glyphs); return; + case 14: + default: return; + } + } + + unsigned get_language () const + { + switch (u.format) { + case 0: return u.format0 .get_language (); + case 4: return u.format4 .get_language (); + case 6: return u.format6 .get_language (); + case 10: return u.format10.get_language (); + case 12: return u.format12.get_language (); + case 13: return u.format13.get_language (); + case 14: + default: return 0; + } + } + + template + void serialize (hb_serialize_context_t *c, + Iterator it, + unsigned format, + const hb_subset_plan_t *plan, + const void *base) + { + switch (format) { + case 4: return u.format4.serialize (c, it); + case 12: return u.format12.serialize (c, it); + case 14: return u.format14.serialize (c, &plan->unicodes, &plan->glyphs_requested, plan->glyph_map, base); + default: return; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.format.sanitize (c)) return_trace (false); + switch (u.format) { + case 0: return_trace (u.format0 .sanitize (c)); + case 4: return_trace (u.format4 .sanitize (c)); + case 6: return_trace (u.format6 .sanitize (c)); + case 10: return_trace (u.format10.sanitize (c)); + case 12: return_trace (u.format12.sanitize (c)); + case 13: return_trace (u.format13.sanitize (c)); + case 14: return_trace (u.format14.sanitize (c)); + default:return_trace (true); + } + } + + public: + union { + HBUINT16 format; /* Format identifier */ + CmapSubtableFormat0 format0; + CmapSubtableFormat4 format4; + CmapSubtableFormat6 format6; + CmapSubtableFormat10 format10; + CmapSubtableFormat12 format12; + CmapSubtableFormat13 format13; + CmapSubtableFormat14 format14; + } u; + public: + DEFINE_SIZE_UNION (2, format); +}; + + +struct EncodingRecord +{ + int cmp (const EncodingRecord &other) const + { + int ret; + ret = platformID.cmp (other.platformID); + if (ret) return ret; + ret = encodingID.cmp (other.encodingID); + if (ret) return ret; + return 0; + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + subtable.sanitize (c, base)); + } + + template + EncodingRecord* copy (hb_serialize_context_t *c, + Iterator it, + unsigned format, + const void *base, + const hb_subset_plan_t *plan, + /* INOUT */ unsigned *objidx) const + { + TRACE_SERIALIZE (this); + auto snap = c->snapshot (); + auto *out = c->embed (this); + if (unlikely (!out)) return_trace (nullptr); + out->subtable = 0; + + if (*objidx == 0) + { + CmapSubtable *cmapsubtable = c->push (); + unsigned origin_length = c->length (); + cmapsubtable->serialize (c, it, format, plan, &(base+subtable)); + if (c->length () - origin_length > 0) *objidx = c->pop_pack (); + else c->pop_discard (); + } + + if (*objidx == 0) + { + c->revert (snap); + return_trace (nullptr); + } + + c->add_link (out->subtable, *objidx); + return_trace (out); + } + + HBUINT16 platformID; /* Platform ID. */ + HBUINT16 encodingID; /* Platform-specific encoding ID. */ + Offset32To + subtable; /* Byte offset from beginning of table to the subtable for this encoding. */ + public: + DEFINE_SIZE_STATIC (8); +}; + +struct cmap; + +struct SubtableUnicodesCache { + + private: + hb_blob_ptr_t base_blob; + const char* base; + hb_hashmap_t> cached_unicodes; + + public: + + static SubtableUnicodesCache* create (hb_blob_ptr_t source_table) + { + SubtableUnicodesCache* cache = + (SubtableUnicodesCache*) hb_malloc (sizeof(SubtableUnicodesCache)); + new (cache) SubtableUnicodesCache (source_table); + return cache; + } + + static void destroy (void* value) { + if (!value) return; + + SubtableUnicodesCache* cache = (SubtableUnicodesCache*) value; + cache->~SubtableUnicodesCache (); + hb_free (cache); + } + + SubtableUnicodesCache(const void* cmap_base) + : base_blob(), + base ((const char*) cmap_base), + cached_unicodes () + {} + + SubtableUnicodesCache(hb_blob_ptr_t base_blob_) + : base_blob(base_blob_), + base ((const char *) base_blob.get()), + cached_unicodes () + {} + + ~SubtableUnicodesCache() + { + base_blob.destroy (); + } + + bool same_base(const void* other) const + { + return other == (const void*) base; + } + + const hb_set_t* set_for (const EncodingRecord* record, + SubtableUnicodesCache& mutable_cache) const + { + if (cached_unicodes.has ((unsigned) ((const char *) record - base))) + return cached_unicodes.get ((unsigned) ((const char *) record - base)); + + return mutable_cache.set_for (record); + } + + const hb_set_t* set_for (const EncodingRecord* record) + { + if (!cached_unicodes.has ((unsigned) ((const char *) record - base))) + { + hb_set_t *s = hb_set_create (); + if (unlikely (s->in_error ())) + return hb_set_get_empty (); + + (base+record->subtable).collect_unicodes (s); + + if (unlikely (!cached_unicodes.set ((unsigned) ((const char *) record - base), hb::unique_ptr {s}))) + return hb_set_get_empty (); + + return s; + } + return cached_unicodes.get ((unsigned) ((const char *) record - base)); + } + +}; + +static inline uint_fast16_t +_hb_symbol_pua_map (unsigned codepoint) +{ + if (codepoint <= 0x00FFu) + { + /* For symbol-encoded OpenType fonts, we duplicate the + * U+F000..F0FF range at U+0000..U+00FF. That's what + * Windows seems to do, and that's hinted about at: + * https://docs.microsoft.com/en-us/typography/opentype/spec/recom + * under "Non-Standard (Symbol) Fonts". */ + return 0xF000u + codepoint; + } + return 0; +} + +struct cmap +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_cmap; + + + static SubtableUnicodesCache* create_filled_cache(hb_blob_ptr_t source_table) { + const cmap* cmap = source_table.get(); + auto it = + + hb_iter (cmap->encodingRecord) + | hb_filter ([&](const EncodingRecord& _) { + return cmap::filter_encoding_records_for_subset (cmap, _); + }) + ; + + SubtableUnicodesCache* cache = SubtableUnicodesCache::create(source_table); + for (const EncodingRecord& _ : it) + cache->set_for(&_); // populate the cache for this encoding record. + + return cache; + } + + template + bool serialize (hb_serialize_context_t *c, + Iterator it, + EncodingRecIter encodingrec_iter, + const void *base, + hb_subset_plan_t *plan, + bool drop_format_4 = false) + { + if (unlikely (!c->extend_min ((*this)))) return false; + this->version = 0; + + unsigned format4objidx = 0, format12objidx = 0, format14objidx = 0; + auto snap = c->snapshot (); + + SubtableUnicodesCache local_unicodes_cache (base); + const SubtableUnicodesCache* unicodes_cache = &local_unicodes_cache; + + if (plan->accelerator && + plan->accelerator->cmap_cache && + plan->accelerator->cmap_cache->same_base (base)) + unicodes_cache = plan->accelerator->cmap_cache; + + for (const EncodingRecord& _ : encodingrec_iter) + { + if (c->in_error ()) + return false; + + unsigned format = (base+_.subtable).u.format; + if (format != 4 && format != 12 && format != 14) continue; + + const hb_set_t* unicodes_set = unicodes_cache->set_for (&_, local_unicodes_cache); + + if (!drop_format_4 && format == 4) + { + c->copy (_, + it | hb_filter (*unicodes_set, hb_first), 4u, base, plan, &format4objidx); + if (c->in_error () && c->only_overflow ()) + { + // cmap4 overflowed, reset and retry serialization without format 4 subtables. + c->revert (snap); + return serialize (c, it, + encodingrec_iter, + base, + plan, + true); + } + } + + else if (format == 12) + { + if (_can_drop (_, + *unicodes_set, + base, + *unicodes_cache, + local_unicodes_cache, + + it | hb_map (hb_first), encodingrec_iter)) + continue; + c->copy (_, + it | hb_filter (*unicodes_set, hb_first), 12u, base, plan, &format12objidx); + } + else if (format == 14) c->copy (_, it, 14u, base, plan, &format14objidx); + } + c->check_assign(this->encodingRecord.len, + (c->length () - cmap::min_size)/EncodingRecord::static_size, + HB_SERIALIZE_ERROR_INT_OVERFLOW); + + // Fail if format 4 was dropped and there is no cmap12. + return !drop_format_4 || format12objidx; + } + + template + bool _can_drop (const EncodingRecord& cmap12, + const hb_set_t& cmap12_unicodes, + const void* base, + const SubtableUnicodesCache& unicodes_cache, + SubtableUnicodesCache& local_unicodes_cache, + Iterator subset_unicodes, + EncodingRecordIterator encoding_records) + { + for (auto cp : + subset_unicodes | hb_filter (cmap12_unicodes)) + { + if (cp >= 0x10000) return false; + } + + unsigned target_platform; + unsigned target_encoding; + unsigned target_language = (base+cmap12.subtable).get_language (); + + if (cmap12.platformID == 0 && cmap12.encodingID == 4) + { + target_platform = 0; + target_encoding = 3; + } else if (cmap12.platformID == 3 && cmap12.encodingID == 10) { + target_platform = 3; + target_encoding = 1; + } else { + return false; + } + + for (const auto& _ : encoding_records) + { + if (_.platformID != target_platform + || _.encodingID != target_encoding + || (base+_.subtable).get_language() != target_language) + continue; + + const hb_set_t* sibling_unicodes = unicodes_cache.set_for (&_, local_unicodes_cache); + + auto cmap12 = + subset_unicodes | hb_filter (cmap12_unicodes); + auto sibling = + subset_unicodes | hb_filter (*sibling_unicodes); + for (; cmap12 && sibling; cmap12++, sibling++) + { + unsigned a = *cmap12; + unsigned b = *sibling; + if (a != b) return false; + } + + return !cmap12 && !sibling; + } + + return false; + } + + void closure_glyphs (const hb_set_t *unicodes, + hb_set_t *glyphset) const + { + + hb_iter (encodingRecord) + | hb_map (&EncodingRecord::subtable) + | hb_map (hb_add (this)) + | hb_filter ([&] (const CmapSubtable& _) { return _.u.format == 14; }) + | hb_apply ([=] (const CmapSubtable& _) { _.u.format14.closure_glyphs (unicodes, glyphset); }) + ; + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + cmap *cmap_prime = c->serializer->start_embed (); + if (unlikely (!c->serializer->check_success (cmap_prime))) return_trace (false); + + auto encodingrec_iter = + + hb_iter (encodingRecord) + | hb_filter ([&](const EncodingRecord& _) { + return cmap::filter_encoding_records_for_subset (this, _); + }) + ; + + if (unlikely (!encodingrec_iter.len ())) return_trace (false); + + const EncodingRecord *unicode_bmp= nullptr, *unicode_ucs4 = nullptr, *ms_bmp = nullptr, *ms_ucs4 = nullptr; + bool has_format12 = false; + + for (const EncodingRecord& _ : encodingrec_iter) + { + unsigned format = (this + _.subtable).u.format; + if (format == 12) has_format12 = true; + + const EncodingRecord *table = std::addressof (_); + if (_.platformID == 0 && _.encodingID == 3) unicode_bmp = table; + else if (_.platformID == 0 && _.encodingID == 4) unicode_ucs4 = table; + else if (_.platformID == 3 && _.encodingID == 1) ms_bmp = table; + else if (_.platformID == 3 && _.encodingID == 10) ms_ucs4 = table; + } + + if (unlikely (!has_format12 && !unicode_bmp && !ms_bmp)) return_trace (false); + if (unlikely (has_format12 && (!unicode_ucs4 && !ms_ucs4))) return_trace (false); + + auto it = + + c->plan->unicode_to_new_gid_list.iter () + | hb_filter ([&] (const hb_pair_t _) + { return (_.second != HB_MAP_VALUE_INVALID); }) + ; + + return_trace (cmap_prime->serialize (c->serializer, + it, + encodingrec_iter, + this, + c->plan)); + } + + const CmapSubtable *find_best_subtable (bool *symbol = nullptr) const + { + if (symbol) *symbol = false; + + const CmapSubtable *subtable; + + /* Symbol subtable. + * Prefer symbol if available. + * https://github.com/harfbuzz/harfbuzz/issues/1918 */ + if ((subtable = this->find_subtable (3, 0))) + { + if (symbol) *symbol = true; + return subtable; + } + + /* 32-bit subtables. */ + if ((subtable = this->find_subtable (3, 10))) return subtable; + if ((subtable = this->find_subtable (0, 6))) return subtable; + if ((subtable = this->find_subtable (0, 4))) return subtable; + + /* 16-bit subtables. */ + if ((subtable = this->find_subtable (3, 1))) return subtable; + if ((subtable = this->find_subtable (0, 3))) return subtable; + if ((subtable = this->find_subtable (0, 2))) return subtable; + if ((subtable = this->find_subtable (0, 1))) return subtable; + if ((subtable = this->find_subtable (0, 0))) return subtable; + + /* Meh. */ + return &Null (CmapSubtable); + } + + struct accelerator_t + { + using cache_t = hb_cache_t<21, 16, 8, true>; + + accelerator_t (hb_face_t *face) + { + this->table = hb_sanitize_context_t ().reference_table (face); + bool symbol; + this->subtable = table->find_best_subtable (&symbol); + this->subtable_uvs = &Null (CmapSubtableFormat14); + { + const CmapSubtable *st = table->find_subtable (0, 5); + if (st && st->u.format == 14) + subtable_uvs = &st->u.format14; + } + + this->get_glyph_data = subtable; + if (unlikely (symbol)) + { + switch ((unsigned) face->table.OS2->get_font_page ()) { + case OS2::font_page_t::FONT_PAGE_NONE: + this->get_glyph_funcZ = get_glyph_from_symbol; + break; +#ifndef HB_NO_OT_SHAPER_ARABIC_FALLBACK + case OS2::font_page_t::FONT_PAGE_SIMP_ARABIC: + this->get_glyph_funcZ = get_glyph_from_symbol; + break; + case OS2::font_page_t::FONT_PAGE_TRAD_ARABIC: + this->get_glyph_funcZ = get_glyph_from_symbol; + break; +#endif + default: + this->get_glyph_funcZ = get_glyph_from; + break; + } + } + else + { + switch (subtable->u.format) { + /* Accelerate format 4 and format 12. */ + default: + this->get_glyph_funcZ = get_glyph_from; + break; + case 12: + this->get_glyph_funcZ = get_glyph_from; + break; + case 4: + { + this->format4_accel.init (&subtable->u.format4); + this->get_glyph_data = &this->format4_accel; + this->get_glyph_funcZ = this->format4_accel.get_glyph_func; + break; + } + } + } + } + ~accelerator_t () { this->table.destroy (); } + + inline bool _cached_get (hb_codepoint_t unicode, + hb_codepoint_t *glyph, + cache_t *cache) const + { + unsigned v; + if (cache && cache->get (unicode, &v)) + { + *glyph = v; + return true; + } + bool ret = this->get_glyph_funcZ (this->get_glyph_data, unicode, glyph); + + if (cache && ret) + cache->set (unicode, *glyph); + return ret; + } + + bool get_nominal_glyph (hb_codepoint_t unicode, + hb_codepoint_t *glyph, + cache_t *cache = nullptr) const + { + if (unlikely (!this->get_glyph_funcZ)) return 0; + return _cached_get (unicode, glyph, cache); + } + + unsigned int get_nominal_glyphs (unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + cache_t *cache = nullptr) const + { + if (unlikely (!this->get_glyph_funcZ)) return 0; + + unsigned int done; + for (done = 0; + done < count && _cached_get (*first_unicode, first_glyph, cache); + done++) + { + first_unicode = &StructAtOffsetUnaligned (first_unicode, unicode_stride); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + } + return done; + } + + bool get_variation_glyph (hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + cache_t *cache = nullptr) const + { + switch (this->subtable_uvs->get_glyph_variant (unicode, + variation_selector, + glyph)) + { + case GLYPH_VARIANT_NOT_FOUND: return false; + case GLYPH_VARIANT_FOUND: return true; + case GLYPH_VARIANT_USE_DEFAULT: break; + } + + return get_nominal_glyph (unicode, glyph, cache); + } + + void collect_unicodes (hb_set_t *out, unsigned int num_glyphs) const + { subtable->collect_unicodes (out, num_glyphs); } + void collect_mapping (hb_set_t *unicodes, hb_map_t *mapping, + unsigned num_glyphs = UINT_MAX) const + { subtable->collect_mapping (unicodes, mapping, num_glyphs); } + void collect_variation_selectors (hb_set_t *out) const + { subtable_uvs->collect_variation_selectors (out); } + void collect_variation_unicodes (hb_codepoint_t variation_selector, + hb_set_t *out) const + { subtable_uvs->collect_variation_unicodes (variation_selector, out); } + + protected: + typedef bool (*hb_cmap_get_glyph_func_t) (const void *obj, + hb_codepoint_t codepoint, + hb_codepoint_t *glyph); + typedef uint_fast16_t (*hb_pua_remap_func_t) (unsigned); + + template + HB_INTERNAL static bool get_glyph_from (const void *obj, + hb_codepoint_t codepoint, + hb_codepoint_t *glyph) + { + const Type *typed_obj = (const Type *) obj; + return typed_obj->get_glyph (codepoint, glyph); + } + + template + HB_INTERNAL static bool get_glyph_from_symbol (const void *obj, + hb_codepoint_t codepoint, + hb_codepoint_t *glyph) + { + const Type *typed_obj = (const Type *) obj; + if (likely (typed_obj->get_glyph (codepoint, glyph))) + return true; + + if (hb_codepoint_t c = remap (codepoint)) + return typed_obj->get_glyph (c, glyph); + + return false; + } + + private: + hb_nonnull_ptr_t subtable; + hb_nonnull_ptr_t subtable_uvs; + + hb_cmap_get_glyph_func_t get_glyph_funcZ; + const void *get_glyph_data; + + CmapSubtableFormat4::accelerator_t format4_accel; + + public: + hb_blob_ptr_t table; + }; + + protected: + + const CmapSubtable *find_subtable (unsigned int platform_id, + unsigned int encoding_id) const + { + EncodingRecord key; + key.platformID = platform_id; + key.encodingID = encoding_id; + + const EncodingRecord &result = encodingRecord.bsearch (key); + if (!result.subtable) + return nullptr; + + return &(this+result.subtable); + } + + const EncodingRecord *find_encodingrec (unsigned int platform_id, + unsigned int encoding_id) const + { + EncodingRecord key; + key.platformID = platform_id; + key.encodingID = encoding_id; + + return encodingRecord.as_array ().bsearch (key); + } + + bool find_subtable (unsigned format) const + { + auto it = + + hb_iter (encodingRecord) + | hb_map (&EncodingRecord::subtable) + | hb_map (hb_add (this)) + | hb_filter ([&] (const CmapSubtable& _) { return _.u.format == format; }) + ; + + return it.len (); + } + + public: + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + likely (version == 0) && + encodingRecord.sanitize (c, this)); + } + + private: + + static bool filter_encoding_records_for_subset(const cmap* cmap, + const EncodingRecord& _) + { + return + (_.platformID == 0 && _.encodingID == 3) || + (_.platformID == 0 && _.encodingID == 4) || + (_.platformID == 3 && _.encodingID == 1) || + (_.platformID == 3 && _.encodingID == 10) || + (cmap + _.subtable).u.format == 14; + } + + protected: + HBUINT16 version; /* Table version number (0). */ + SortedArray16Of + encodingRecord; /* Encoding tables. */ + public: + DEFINE_SIZE_ARRAY (4, encodingRecord); +}; + +struct cmap_accelerator_t : cmap::accelerator_t { + cmap_accelerator_t (hb_face_t *face) : cmap::accelerator_t (face) {} +}; + +} /* namespace OT */ + + +#endif /* HB_OT_CMAP_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-color.cc b/gfx/harfbuzz/src/hb-ot-color.cc new file mode 100644 index 0000000000..37d42e08d9 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-color.cc @@ -0,0 +1,363 @@ +/* + * Copyright © 2016 Google, Inc. + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Sascha Brawer, Behdad Esfahbod + */ + +#include "hb.hh" + +#ifndef HB_NO_COLOR + +#include "hb-ot.h" + +#include "OT/Color/CBDT/CBDT.hh" +#include "OT/Color/COLR/COLR.hh" +#include "OT/Color/CPAL/CPAL.hh" +#include "OT/Color/sbix/sbix.hh" +#include "OT/Color/svg/svg.hh" + + +/** + * SECTION:hb-ot-color + * @title: hb-ot-color + * @short_description: OpenType Color Fonts + * @include: hb-ot.h + * + * Functions for fetching color-font information from OpenType font faces. + * + * HarfBuzz supports `COLR`/`CPAL`, `sbix`, `CBDT`, and `SVG` color fonts. + **/ + + +/* + * CPAL + */ + + +/** + * hb_ot_color_has_palettes: + * @face: #hb_face_t to work upon + * + * Tests whether a face includes a `CPAL` color-palette table. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.1.0 + */ +hb_bool_t +hb_ot_color_has_palettes (hb_face_t *face) +{ + return face->table.CPAL->has_data (); +} + +/** + * hb_ot_color_palette_get_count: + * @face: #hb_face_t to work upon + * + * Fetches the number of color palettes in a face. + * + * Return value: the number of palettes found + * + * Since: 2.1.0 + */ +unsigned int +hb_ot_color_palette_get_count (hb_face_t *face) +{ + return face->table.CPAL->get_palette_count (); +} + +/** + * hb_ot_color_palette_get_name_id: + * @face: #hb_face_t to work upon + * @palette_index: The index of the color palette + * + * Fetches the `name` table Name ID that provides display names for + * a `CPAL` color palette. + * + * Palette display names can be generic (e.g., "Default") or provide + * specific, themed names (e.g., "Spring", "Summer", "Fall", and "Winter"). + * + * Return value: the Named ID found for the palette. + * If the requested palette has no name the result is #HB_OT_NAME_ID_INVALID. + * + * Since: 2.1.0 + */ +hb_ot_name_id_t +hb_ot_color_palette_get_name_id (hb_face_t *face, + unsigned int palette_index) +{ + return face->table.CPAL->get_palette_name_id (palette_index); +} + +/** + * hb_ot_color_palette_color_get_name_id: + * @face: #hb_face_t to work upon + * @color_index: The index of the color + * + * Fetches the `name` table Name ID that provides display names for + * the specified color in a face's `CPAL` color palette. + * + * Display names can be generic (e.g., "Background") or specific + * (e.g., "Eye color"). + * + * Return value: the Name ID found for the color. + * + * Since: 2.1.0 + */ +hb_ot_name_id_t +hb_ot_color_palette_color_get_name_id (hb_face_t *face, + unsigned int color_index) +{ + return face->table.CPAL->get_color_name_id (color_index); +} + +/** + * hb_ot_color_palette_get_flags: + * @face: #hb_face_t to work upon + * @palette_index: The index of the color palette + * + * Fetches the flags defined for a color palette. + * + * Return value: the #hb_ot_color_palette_flags_t of the requested color palette + * + * Since: 2.1.0 + */ +hb_ot_color_palette_flags_t +hb_ot_color_palette_get_flags (hb_face_t *face, + unsigned int palette_index) +{ + return face->table.CPAL->get_palette_flags (palette_index); +} + +/** + * hb_ot_color_palette_get_colors: + * @face: #hb_face_t to work upon + * @palette_index: the index of the color palette to query + * @start_offset: offset of the first color to retrieve + * @color_count: (inout) (optional): Input = the maximum number of colors to return; + * Output = the actual number of colors returned (may be zero) + * @colors: (out) (array length=color_count) (nullable): The array of #hb_color_t records found + * + * Fetches a list of the colors in a color palette. + * + * After calling this function, @colors will be filled with the palette + * colors. If @colors is NULL, the function will just return the number + * of total colors without storing any actual colors; this can be used + * for allocating a buffer of suitable size before calling + * hb_ot_color_palette_get_colors() a second time. + * + * The RGBA values in the palette are unpremultiplied. See the + * OpenType spec [CPAL](https://learn.microsoft.com/en-us/typography/opentype/spec/cpal) + * section for details. + * + * Return value: the total number of colors in the palette + * + * Since: 2.1.0 + */ +unsigned int +hb_ot_color_palette_get_colors (hb_face_t *face, + unsigned int palette_index, + unsigned int start_offset, + unsigned int *colors_count /* IN/OUT. May be NULL. */, + hb_color_t *colors /* OUT. May be NULL. */) +{ + return face->table.CPAL->get_palette_colors (palette_index, start_offset, colors_count, colors); +} + + +/* + * COLR + */ + +/** + * hb_ot_color_has_layers: + * @face: #hb_face_t to work upon + * + * Tests whether a face includes a `COLR` table + * with data according to COLRv0. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.1.0 + */ +hb_bool_t +hb_ot_color_has_layers (hb_face_t *face) +{ + return face->table.COLR->has_v0_data (); +} + +/** + * hb_ot_color_has_paint: + * @face: #hb_face_t to work upon + * + * Tests where a face includes a `COLR` table + * with data according to COLRv1. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 7.0.0 + */ +hb_bool_t +hb_ot_color_has_paint (hb_face_t *face) +{ + return face->table.COLR->has_v1_data (); +} + +/** + * hb_ot_color_glyph_has_paint: + * @face: #hb_face_t to work upon + * @glyph: The glyph index to query + * + * Tests where a face includes COLRv1 paint + * data for @glyph. + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 7.0.0 + */ +hb_bool_t +hb_ot_color_glyph_has_paint (hb_face_t *face, + hb_codepoint_t glyph) +{ + return face->table.COLR->has_paint_for_glyph (glyph); +} + +/** + * hb_ot_color_glyph_get_layers: + * @face: #hb_face_t to work upon + * @glyph: The glyph index to query + * @start_offset: offset of the first layer to retrieve + * @layer_count: (inout) (optional): Input = the maximum number of layers to return; + * Output = the actual number of layers returned (may be zero) + * @layers: (out) (array length=layer_count) (nullable): The array of layers found + * + * Fetches a list of all color layers for the specified glyph index in the specified + * face. The list returned will begin at the offset provided. + * + * Return value: Total number of layers available for the glyph index queried + * + * Since: 2.1.0 + */ +unsigned int +hb_ot_color_glyph_get_layers (hb_face_t *face, + hb_codepoint_t glyph, + unsigned int start_offset, + unsigned int *layer_count, /* IN/OUT. May be NULL. */ + hb_ot_color_layer_t *layers /* OUT. May be NULL. */) +{ + return face->table.COLR->get_glyph_layers (glyph, start_offset, layer_count, layers); +} + + +/* + * SVG + */ + +/** + * hb_ot_color_has_svg: + * @face: #hb_face_t to work upon. + * + * Tests whether a face includes any `SVG` glyph images. + * + * Return value: `true` if data found, `false` otherwise. + * + * Since: 2.1.0 + */ +hb_bool_t +hb_ot_color_has_svg (hb_face_t *face) +{ + return face->table.SVG->has_data (); +} + +/** + * hb_ot_color_glyph_reference_svg: + * @face: #hb_face_t to work upon + * @glyph: a svg glyph index + * + * Fetches the SVG document for a glyph. The blob may be either plain text or gzip-encoded. + * + * If the glyph has no SVG document, the singleton empty blob is returned. + * + * Return value: (transfer full): An #hb_blob_t containing the SVG document of the glyph, if available + * + * Since: 2.1.0 + */ +hb_blob_t * +hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph) +{ + return face->table.SVG->reference_blob_for_glyph (glyph); +} + + +/* + * PNG: CBDT or sbix + */ + +/** + * hb_ot_color_has_png: + * @face: #hb_face_t to work upon + * + * Tests whether a face has PNG glyph images (either in `CBDT` or `sbix` tables). + * + * Return value: `true` if data found, `false` otherwise + * + * Since: 2.1.0 + */ +hb_bool_t +hb_ot_color_has_png (hb_face_t *face) +{ + return face->table.CBDT->has_data () || face->table.sbix->has_data (); +} + +/** + * hb_ot_color_glyph_reference_png: + * @font: #hb_font_t to work upon + * @glyph: a glyph index + * + * Fetches the PNG image for a glyph. This function takes a font object, not a face object, + * as input. To get an optimally sized PNG blob, the PPEM values must be set on the @font + * object. If PPEM is unset, the blob returned will be the largest PNG available. + * + * If the glyph has no PNG image, the singleton empty blob is returned. + * + * Return value: (transfer full): An #hb_blob_t containing the PNG image for the glyph, if available + * + * Since: 2.1.0 + */ +hb_blob_t * +hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t glyph) +{ + hb_blob_t *blob = hb_blob_get_empty (); + + if (font->face->table.sbix->has_data ()) + blob = font->face->table.sbix->reference_png (font, glyph, nullptr, nullptr, nullptr); + + if (!blob->length && font->face->table.CBDT->has_data ()) + blob = font->face->table.CBDT->reference_png (font, glyph); + + return blob; +} + + +#endif diff --git a/gfx/harfbuzz/src/hb-ot-color.h b/gfx/harfbuzz/src/hb-ot-color.h new file mode 100644 index 0000000000..22ee497e38 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-color.h @@ -0,0 +1,155 @@ +/* + * Copyright © 2016 Google, Inc. + * Copyright © 2018 Khaled Hosny + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Sascha Brawer, Behdad Esfahbod + */ + +#if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_OT_COLOR_H +#define HB_OT_COLOR_H + +#include "hb.h" +#include "hb-ot-name.h" + +HB_BEGIN_DECLS + + +/* + * Color palettes. + */ + +HB_EXTERN hb_bool_t +hb_ot_color_has_palettes (hb_face_t *face); + +HB_EXTERN unsigned int +hb_ot_color_palette_get_count (hb_face_t *face); + +HB_EXTERN hb_ot_name_id_t +hb_ot_color_palette_get_name_id (hb_face_t *face, + unsigned int palette_index); + +HB_EXTERN hb_ot_name_id_t +hb_ot_color_palette_color_get_name_id (hb_face_t *face, + unsigned int color_index); + +/** + * hb_ot_color_palette_flags_t: + * @HB_OT_COLOR_PALETTE_FLAG_DEFAULT: Default indicating that there is nothing special + * to note about a color palette. + * @HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_LIGHT_BACKGROUND: Flag indicating that the color + * palette is appropriate to use when displaying the font on a light background such as white. + * @HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_DARK_BACKGROUND: Flag indicating that the color + * palette is appropriate to use when displaying the font on a dark background such as black. + * + * Flags that describe the properties of color palette. + * + * Since: 2.1.0 + */ +typedef enum { /*< flags >*/ + HB_OT_COLOR_PALETTE_FLAG_DEFAULT = 0x00000000u, + HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_LIGHT_BACKGROUND = 0x00000001u, + HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_DARK_BACKGROUND = 0x00000002u +} hb_ot_color_palette_flags_t; + +HB_EXTERN hb_ot_color_palette_flags_t +hb_ot_color_palette_get_flags (hb_face_t *face, + unsigned int palette_index); + +HB_EXTERN unsigned int +hb_ot_color_palette_get_colors (hb_face_t *face, + unsigned int palette_index, + unsigned int start_offset, + unsigned int *color_count, /* IN/OUT. May be NULL. */ + hb_color_t *colors /* OUT. May be NULL. */); + + +/* + * Color layers. + */ + +HB_EXTERN hb_bool_t +hb_ot_color_has_layers (hb_face_t *face); + +/** + * hb_ot_color_layer_t: + * @glyph: the glyph ID of the layer + * @color_index: the palette color index of the layer + * + * Pairs of glyph and color index. + * + * A color index of 0xFFFF does not refer to a palette + * color, but indicates that the foreground color should + * be used. + * + * Since: 2.1.0 + **/ +typedef struct hb_ot_color_layer_t { + hb_codepoint_t glyph; + unsigned int color_index; +} hb_ot_color_layer_t; + +HB_EXTERN unsigned int +hb_ot_color_glyph_get_layers (hb_face_t *face, + hb_codepoint_t glyph, + unsigned int start_offset, + unsigned int *layer_count, /* IN/OUT. May be NULL. */ + hb_ot_color_layer_t *layers /* OUT. May be NULL. */); + +/* COLRv1 */ + +HB_EXTERN hb_bool_t +hb_ot_color_has_paint (hb_face_t *face); + +HB_EXTERN hb_bool_t +hb_ot_color_glyph_has_paint (hb_face_t *face, + hb_codepoint_t glyph); + +/* + * SVG + */ + +HB_EXTERN hb_bool_t +hb_ot_color_has_svg (hb_face_t *face); + +HB_EXTERN hb_blob_t * +hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph); + +/* + * PNG: CBDT or sbix + */ + +HB_EXTERN hb_bool_t +hb_ot_color_has_png (hb_face_t *face); + +HB_EXTERN hb_blob_t * +hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t glyph); + + +HB_END_DECLS + +#endif /* HB_OT_COLOR_H */ diff --git a/gfx/harfbuzz/src/hb-ot-deprecated.h b/gfx/harfbuzz/src/hb-ot-deprecated.h new file mode 100644 index 0000000000..60672ab128 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-deprecated.h @@ -0,0 +1,147 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_OT_DEPRECATED_H +#define HB_OT_DEPRECATED_H + +#include "hb.h" +#include "hb-ot-name.h" + + +HB_BEGIN_DECLS + +#ifndef HB_DISABLE_DEPRECATED + + +/* https://github.com/harfbuzz/harfbuzz/issues/1734 */ +/** + * HB_MATH_GLYPH_PART_FLAG_EXTENDER: + * + * Use #HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER instead. + * + * Deprecated: 2.5.1 + */ +#define HB_MATH_GLYPH_PART_FLAG_EXTENDER HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER + +/* https://github.com/harfbuzz/harfbuzz/pull/3417 */ +/** + * HB_OT_MATH_SCRIPT: + * + * Use #HB_SCRIPT_MATH or #HB_OT_TAG_MATH_SCRIPT instead. + * + * Previous versions of this documentation recommended passing + * #HB_OT_MATH_SCRIPT to hb_buffer_set_script() to enable math shaping, but this + * usage is no longer supported. Use #HB_SCRIPT_MATH instead. + * + * Since: 1.3.3 + * Deprecated: 3.4.0 + */ +#define HB_OT_MATH_SCRIPT HB_OT_TAG_MATH_SCRIPT + + +/* Like hb_ot_layout_table_find_script, but takes zero-terminated array of scripts to test */ +HB_DEPRECATED_FOR (hb_ot_layout_table_select_script) +HB_EXTERN hb_bool_t +hb_ot_layout_table_choose_script (hb_face_t *face, + hb_tag_t table_tag, + const hb_tag_t *script_tags, + unsigned int *script_index, + hb_tag_t *chosen_script); + +HB_DEPRECATED_FOR (hb_ot_layout_script_select_language) +HB_EXTERN hb_bool_t +hb_ot_layout_script_find_language (hb_face_t *face, + hb_tag_t table_tag, + unsigned int script_index, + hb_tag_t language_tag, + unsigned int *language_index); + +HB_DEPRECATED_FOR (hb_ot_tags_from_script_and_language) +HB_EXTERN void +hb_ot_tags_from_script (hb_script_t script, + hb_tag_t *script_tag_1, + hb_tag_t *script_tag_2); + +HB_DEPRECATED_FOR (hb_ot_tags_from_script_and_language) +HB_EXTERN hb_tag_t +hb_ot_tag_from_language (hb_language_t language); + + +/** + * HB_OT_VAR_NO_AXIS_INDEX: + * + * Do not use. + * + * Since: 1.4.2 + * Deprecated: 2.2.0 + */ +#define HB_OT_VAR_NO_AXIS_INDEX 0xFFFFFFFFu + +/** + * hb_ot_var_axis_t: + * @tag: axis tag + * @name_id: axis name identifier + * @min_value: minimum value of the axis + * @default_value: default value of the axis + * @max_value: maximum value of the axis + * + * Use #hb_ot_var_axis_info_t instead. + * + * Since: 1.4.2 + * Deprecated: 2.2.0 + */ +typedef struct hb_ot_var_axis_t { + hb_tag_t tag; + hb_ot_name_id_t name_id; + float min_value; + float default_value; + float max_value; +} hb_ot_var_axis_t; + +HB_DEPRECATED_FOR (hb_ot_var_get_axis_infos) +HB_EXTERN unsigned int +hb_ot_var_get_axes (hb_face_t *face, + unsigned int start_offset, + unsigned int *axes_count /* IN/OUT */, + hb_ot_var_axis_t *axes_array /* OUT */); + +HB_DEPRECATED_FOR (hb_ot_var_find_axis_info) +HB_EXTERN hb_bool_t +hb_ot_var_find_axis (hb_face_t *face, + hb_tag_t axis_tag, + unsigned int *axis_index, + hb_ot_var_axis_t *axis_info); + + +#endif + +HB_END_DECLS + +#endif /* HB_OT_DEPRECATED_H */ diff --git a/gfx/harfbuzz/src/hb-ot-face-table-list.hh b/gfx/harfbuzz/src/hb-ot-face-table-list.hh new file mode 100644 index 0000000000..b552dfdd9d --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-face-table-list.hh @@ -0,0 +1,152 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2012,2013 Google, Inc. + * Copyright © 2019, Facebook Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + * Facebook Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_FACE_TABLE_LIST_HH +#define HB_OT_FACE_TABLE_LIST_HH +#endif /* HB_OT_FACE_TABLE_LIST_HH */ /* Dummy header guards */ + +#ifndef HB_OT_CORE_TABLE +#define HB_OT_CORE_TABLE(Namespace, Type) HB_OT_TABLE (Namespace, Type) +#define _HB_OT_CORE_TABLE_UNDEF +#endif + +#ifndef HB_OT_ACCELERATOR +#define HB_OT_ACCELERATOR(Namespace, Type) HB_OT_TABLE (Namespace, Type) +#define _HB_OT_ACCELERATOR_UNDEF +#endif + + +/* This lists font tables that the hb_face_t will contain and lazily + * load. Don't add a table unless it's used though. This is not + * exactly zero-cost. */ + +/* v--- Add new tables in the right place here. */ + + +/* OpenType fundamentals. */ +HB_OT_CORE_TABLE (OT, head) +HB_OT_CORE_TABLE (OT, maxp) +#if !defined(HB_NO_FACE_COLLECT_UNICODES) || !defined(HB_NO_OT_FONT) +HB_OT_ACCELERATOR (OT, cmap) +#endif +HB_OT_CORE_TABLE (OT, hhea) +HB_OT_ACCELERATOR (OT, hmtx) +HB_OT_CORE_TABLE (OT, OS2) +#if !defined(HB_NO_OT_FONT_GLYPH_NAMES) || !defined(HB_NO_METRICS) || !defined(HB_NO_STYLE) +HB_OT_ACCELERATOR (OT, post) +#endif +#ifndef HB_NO_NAME +HB_OT_ACCELERATOR (OT, name) +#endif +#ifndef HB_NO_STYLE +HB_OT_CORE_TABLE (OT, STAT) +#endif +#ifndef HB_NO_META +HB_OT_ACCELERATOR (OT, meta) +#endif + +/* Vertical layout. */ +#ifndef HB_NO_VERTICAL +HB_OT_CORE_TABLE (OT, vhea) +HB_OT_ACCELERATOR (OT, vmtx) +HB_OT_CORE_TABLE (OT, VORG) +#endif + +/* TrueType outlines. */ +HB_OT_CORE_TABLE (OT, loca) // Also used to determine number of glyphs +HB_OT_ACCELERATOR (OT, glyf) + +/* CFF outlines. */ +#ifndef HB_NO_CFF +HB_OT_ACCELERATOR (OT, cff1) +HB_OT_ACCELERATOR (OT, cff2) +#endif + +/* OpenType variations. */ +#ifndef HB_NO_VAR +HB_OT_CORE_TABLE (OT, fvar) +HB_OT_CORE_TABLE (OT, avar) +HB_OT_CORE_TABLE (OT, cvar) +HB_OT_ACCELERATOR (OT, gvar) +HB_OT_CORE_TABLE (OT, MVAR) +#endif + +/* Legacy kern. */ +#ifndef HB_NO_OT_KERN +HB_OT_CORE_TABLE (OT, kern) +#endif + +/* OpenType shaping. */ +#ifndef HB_NO_OT_LAYOUT +HB_OT_ACCELERATOR (OT, GDEF) +HB_OT_ACCELERATOR (OT, GSUB) +HB_OT_ACCELERATOR (OT, GPOS) +//HB_OT_CORE_TABLE (OT, JSTF) +#endif + +/* OpenType baseline. */ +#ifndef HB_NO_BASE +HB_OT_CORE_TABLE (OT, BASE) +#endif + +/* AAT shaping. */ +#ifndef HB_NO_AAT +HB_OT_TABLE (AAT, morx) +HB_OT_TABLE (AAT, mort) +HB_OT_TABLE (AAT, kerx) +HB_OT_TABLE (AAT, ankr) +HB_OT_TABLE (AAT, trak) +HB_OT_TABLE (AAT, ltag) +HB_OT_TABLE (AAT, feat) +// HB_OT_TABLE (AAT, opbd) +#endif + +/* OpenType color fonts. */ +#ifndef HB_NO_COLOR +HB_OT_CORE_TABLE (OT, COLR) +HB_OT_CORE_TABLE (OT, CPAL) +HB_OT_ACCELERATOR (OT, CBDT) +HB_OT_ACCELERATOR (OT, sbix) +HB_OT_ACCELERATOR (OT, SVG) +#endif + +/* OpenType math. */ +#ifndef HB_NO_MATH +HB_OT_CORE_TABLE (OT, MATH) +#endif + + +#ifdef _HB_OT_ACCELERATOR_UNDEF +#undef HB_OT_ACCELERATOR +#endif + +#ifdef _HB_OT_CORE_TABLE_UNDEF +#undef HB_OT_CORE_TABLE +#endif diff --git a/gfx/harfbuzz/src/hb-ot-face.cc b/gfx/harfbuzz/src/hb-ot-face.cc new file mode 100644 index 0000000000..2243ee0287 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-face.cc @@ -0,0 +1,58 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb-ot-face.hh" + +#include "hb-ot-cmap-table.hh" +#include "hb-ot-glyf-table.hh" +#include "hb-ot-cff1-table.hh" +#include "hb-ot-cff2-table.hh" +#include "hb-ot-hmtx-table.hh" +#include "hb-ot-kern-table.hh" +#include "hb-ot-meta-table.hh" +#include "hb-ot-name-table.hh" +#include "hb-ot-post-table.hh" +#include "OT/Color/CBDT/CBDT.hh" +#include "OT/Color/sbix/sbix.hh" +#include "OT/Color/svg/svg.hh" +#include "hb-ot-layout-gdef-table.hh" +#include "hb-ot-layout-gsub-table.hh" +#include "hb-ot-layout-gpos-table.hh" + + +void hb_ot_face_t::init0 (hb_face_t *face) +{ + this->face = face; +#define HB_OT_TABLE(Namespace, Type) Type.init0 (); +#include "hb-ot-face-table-list.hh" +#undef HB_OT_TABLE +} +void hb_ot_face_t::fini () +{ +#define HB_OT_TABLE(Namespace, Type) Type.fini (); +#include "hb-ot-face-table-list.hh" +#undef HB_OT_TABLE +} diff --git a/gfx/harfbuzz/src/hb-ot-face.hh b/gfx/harfbuzz/src/hb-ot-face.hh new file mode 100644 index 0000000000..415dae8e20 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-face.hh @@ -0,0 +1,77 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2012,2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_FACE_HH +#define HB_OT_FACE_HH + +#include "hb.hh" + +#include "hb-machinery.hh" + + +/* + * hb_ot_face_t + */ + +/* Declare tables. */ +#define HB_OT_TABLE(Namespace, Type) namespace Namespace { struct Type; } +#define HB_OT_ACCELERATOR(Namespace, Type) HB_OT_TABLE (Namespace, Type##_accelerator_t) +#include "hb-ot-face-table-list.hh" +#undef HB_OT_ACCELERATOR +#undef HB_OT_TABLE + +struct hb_ot_face_t +{ + HB_INTERNAL void init0 (hb_face_t *face); + HB_INTERNAL void fini (); + +#define HB_OT_TABLE_ORDER(Namespace, Type) \ + HB_PASTE (ORDER_, HB_PASTE (Namespace, HB_PASTE (_, Type))) + enum order_t + { + ORDER_ZERO, +#define HB_OT_TABLE(Namespace, Type) HB_OT_TABLE_ORDER (Namespace, Type), +#include "hb-ot-face-table-list.hh" +#undef HB_OT_TABLE + }; + + hb_face_t *face; /* MUST be JUST before the lazy loaders. */ +#define HB_OT_TABLE(Namespace, Type) \ + hb_table_lazy_loader_t Type; +#define HB_OT_CORE_TABLE(Namespace, Type) \ + hb_table_lazy_loader_t Type; +#define HB_OT_ACCELERATOR(Namespace, Type) \ + hb_face_lazy_loader_t Type; +#include "hb-ot-face-table-list.hh" +#undef HB_OT_ACCELERATOR +#undef HB_OT_CORE_TABLE +#undef HB_OT_TABLE +}; + + +#endif /* HB_OT_FACE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-font.cc b/gfx/harfbuzz/src/hb-ot-font.cc new file mode 100644 index 0000000000..c89a1954a9 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-font.cc @@ -0,0 +1,654 @@ +/* + * Copyright © 2011,2014 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod, Roozbeh Pournader + */ + +#include "hb.hh" + +#ifndef HB_NO_OT_FONT + +#include "hb-ot.h" + +#include "hb-cache.hh" +#include "hb-font.hh" +#include "hb-machinery.hh" +#include "hb-ot-face.hh" +#include "hb-outline.hh" + +#include "hb-ot-cmap-table.hh" +#include "hb-ot-glyf-table.hh" +#include "hb-ot-cff1-table.hh" +#include "hb-ot-cff2-table.hh" +#include "hb-ot-hmtx-table.hh" +#include "hb-ot-post-table.hh" +#include "hb-ot-stat-table.hh" // Just so we compile it; unused otherwise. +#include "hb-ot-vorg-table.hh" +#include "OT/Color/CBDT/CBDT.hh" +#include "OT/Color/COLR/COLR.hh" +#include "OT/Color/sbix/sbix.hh" +#include "OT/Color/svg/svg.hh" + + +/** + * SECTION:hb-ot-font + * @title: hb-ot-font + * @short_description: OpenType font implementation + * @include: hb-ot.h + * + * Functions for using OpenType fonts with hb_shape(). Note that fonts returned + * by hb_font_create() default to using these functions, so most clients would + * never need to call these functions directly. + **/ + +using hb_ot_font_cmap_cache_t = hb_cache_t<21, 16, 8, true>; +using hb_ot_font_advance_cache_t = hb_cache_t<24, 16, 8, true>; + +#ifndef HB_NO_OT_FONT_CMAP_CACHE +static hb_user_data_key_t hb_ot_font_cmap_cache_user_data_key; +#endif + +struct hb_ot_font_t +{ + const hb_ot_face_t *ot_face; + +#ifndef HB_NO_OT_FONT_CMAP_CACHE + hb_ot_font_cmap_cache_t *cmap_cache; +#endif + + /* h_advance caching */ + mutable hb_atomic_int_t cached_coords_serial; + mutable hb_atomic_ptr_t advance_cache; +}; + +static hb_ot_font_t * +_hb_ot_font_create (hb_font_t *font) +{ + hb_ot_font_t *ot_font = (hb_ot_font_t *) hb_calloc (1, sizeof (hb_ot_font_t)); + if (unlikely (!ot_font)) + return nullptr; + + ot_font->ot_face = &font->face->table; + +#ifndef HB_NO_OT_FONT_CMAP_CACHE + // retry: + auto *cmap_cache = (hb_ot_font_cmap_cache_t *) hb_face_get_user_data (font->face, + &hb_ot_font_cmap_cache_user_data_key); + if (!cmap_cache) + { + cmap_cache = (hb_ot_font_cmap_cache_t *) hb_malloc (sizeof (hb_ot_font_cmap_cache_t)); + if (unlikely (!cmap_cache)) goto out; + cmap_cache->init (); + if (unlikely (!hb_face_set_user_data (font->face, + &hb_ot_font_cmap_cache_user_data_key, + cmap_cache, + hb_free, + false))) + { + hb_free (cmap_cache); + cmap_cache = nullptr; + /* Normally we would retry here, but that would + * infinite-loop if the face is the empty-face. + * Just let it go and this font will be uncached if it + * happened to collide with another thread creating the + * cache at the same time. */ + // goto retry; + } + } + out: + ot_font->cmap_cache = cmap_cache; +#endif + + return ot_font; +} + +static void +_hb_ot_font_destroy (void *font_data) +{ + hb_ot_font_t *ot_font = (hb_ot_font_t *) font_data; + + auto *cache = ot_font->advance_cache.get_relaxed (); + hb_free (cache); + + hb_free (ot_font); +} + +static hb_bool_t +hb_ot_get_nominal_glyph (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + hb_ot_font_cmap_cache_t *cmap_cache = nullptr; +#ifndef HB_NO_OT_FONT_CMAP_CACHE + cmap_cache = ot_font->cmap_cache; +#endif + return ot_face->cmap->get_nominal_glyph (unicode, glyph, cmap_cache); +} + +static unsigned int +hb_ot_get_nominal_glyphs (hb_font_t *font HB_UNUSED, + void *font_data, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + hb_ot_font_cmap_cache_t *cmap_cache = nullptr; +#ifndef HB_NO_OT_FONT_CMAP_CACHE + cmap_cache = ot_font->cmap_cache; +#endif + return ot_face->cmap->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride, + cmap_cache); +} + +static hb_bool_t +hb_ot_get_variation_glyph (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + hb_ot_font_cmap_cache_t *cmap_cache = nullptr; +#ifndef HB_NO_OT_FONT_CMAP_CACHE + cmap_cache = ot_font->cmap_cache; +#endif + return ot_face->cmap->get_variation_glyph (unicode, + variation_selector, glyph, + cmap_cache); +} + +static void +hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data, + unsigned count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + void *user_data HB_UNUSED) +{ + + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + const OT::hmtx_accelerator_t &hmtx = *ot_face->hmtx; + + hb_position_t *orig_first_advance = first_advance; + +#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE) + const OT::HVAR &HVAR = *hmtx.var_table; + const OT::VariationStore &varStore = &HVAR + HVAR.varStore; + OT::VariationStore::cache_t *varStore_cache = font->num_coords * count >= 128 ? varStore.create_cache () : nullptr; + + bool use_cache = font->num_coords; +#else + OT::VariationStore::cache_t *varStore_cache = nullptr; + bool use_cache = false; +#endif + + hb_ot_font_advance_cache_t *cache = nullptr; + if (use_cache) + { + retry: + cache = ot_font->advance_cache.get_acquire (); + if (unlikely (!cache)) + { + cache = (hb_ot_font_advance_cache_t *) hb_malloc (sizeof (hb_ot_font_advance_cache_t)); + if (unlikely (!cache)) + { + use_cache = false; + goto out; + } + + cache->init (); + if (unlikely (!ot_font->advance_cache.cmpexch (nullptr, cache))) + { + hb_free (cache); + goto retry; + } + ot_font->cached_coords_serial.set_release (font->serial_coords); + } + } + out: + + if (!use_cache) + { + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->em_scale_x (hmtx.get_advance_with_var_unscaled (*first_glyph, font, varStore_cache)); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } + else + { /* Use cache. */ + if (ot_font->cached_coords_serial.get_acquire () != (int) font->serial_coords) + { + ot_font->advance_cache->init (); + ot_font->cached_coords_serial.set_release (font->serial_coords); + } + + for (unsigned int i = 0; i < count; i++) + { + hb_position_t v; + unsigned cv; + if (ot_font->advance_cache->get (*first_glyph, &cv)) + v = cv; + else + { + v = hmtx.get_advance_with_var_unscaled (*first_glyph, font, varStore_cache); + ot_font->advance_cache->set (*first_glyph, v); + } + *first_advance = font->em_scale_x (v); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } + +#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE) + OT::VariationStore::destroy_cache (varStore_cache); +#endif + + if (font->x_strength && !font->embolden_in_place) + { + /* Emboldening. */ + hb_position_t x_strength = font->x_scale >= 0 ? font->x_strength : -font->x_strength; + first_advance = orig_first_advance; + for (unsigned int i = 0; i < count; i++) + { + *first_advance += *first_advance ? x_strength : 0; + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } +} + +#ifndef HB_NO_VERTICAL +static void +hb_ot_get_glyph_v_advances (hb_font_t* font, void* font_data, + unsigned count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; + + hb_position_t *orig_first_advance = first_advance; + + if (vmtx.has_data ()) + { +#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE) + const OT::VVAR &VVAR = *vmtx.var_table; + const OT::VariationStore &varStore = &VVAR + VVAR.varStore; + OT::VariationStore::cache_t *varStore_cache = font->num_coords ? varStore.create_cache () : nullptr; +#else + OT::VariationStore::cache_t *varStore_cache = nullptr; +#endif + + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->em_scale_y (-(int) vmtx.get_advance_with_var_unscaled (*first_glyph, font, varStore_cache)); + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + +#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE) + OT::VariationStore::destroy_cache (varStore_cache); +#endif + } + else + { + hb_font_extents_t font_extents; + font->get_h_extents_with_fallback (&font_extents); + hb_position_t advance = -(font_extents.ascender - font_extents.descender); + + for (unsigned int i = 0; i < count; i++) + { + *first_advance = advance; + first_glyph = &StructAtOffsetUnaligned (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } + + if (font->y_strength && !font->embolden_in_place) + { + /* Emboldening. */ + hb_position_t y_strength = font->y_scale >= 0 ? font->y_strength : -font->y_strength; + first_advance = orig_first_advance; + for (unsigned int i = 0; i < count; i++) + { + *first_advance += *first_advance ? y_strength : 0; + first_advance = &StructAtOffsetUnaligned (first_advance, advance_stride); + } + } +} +#endif + +#ifndef HB_NO_VERTICAL +static hb_bool_t +hb_ot_get_glyph_v_origin (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + + *x = font->get_glyph_h_advance (glyph) / 2; + + const OT::VORG &VORG = *ot_face->VORG; + if (VORG.has_data ()) + { + float delta = 0; + +#ifndef HB_NO_VAR + const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; + const OT::VVAR &VVAR = *vmtx.var_table; + if (font->num_coords) + VVAR.get_vorg_delta_unscaled (glyph, + font->coords, font->num_coords, + &delta); +#endif + + *y = font->em_scalef_y (VORG.get_y_origin (glyph) + delta); + return true; + } + + hb_glyph_extents_t extents = {0}; + if (ot_face->glyf->get_extents (font, glyph, &extents)) + { + const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; + int tsb = 0; + if (vmtx.get_leading_bearing_with_var_unscaled (font, glyph, &tsb)) + { + *y = extents.y_bearing + font->em_scale_y (tsb); + return true; + } + + hb_font_extents_t font_extents; + font->get_h_extents_with_fallback (&font_extents); + hb_position_t advance = font_extents.ascender - font_extents.descender; + int diff = advance - -extents.height; + *y = extents.y_bearing + (diff >> 1); + return true; + } + + hb_font_extents_t font_extents; + font->get_h_extents_with_fallback (&font_extents); + *y = font_extents.ascender; + + return true; +} +#endif + +static hb_bool_t +hb_ot_get_glyph_extents (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + +#if !defined(HB_NO_OT_FONT_BITMAP) && !defined(HB_NO_COLOR) + if (ot_face->sbix->get_extents (font, glyph, extents)) return true; + if (ot_face->CBDT->get_extents (font, glyph, extents)) return true; +#endif +#if !defined(HB_NO_COLOR) && !defined(HB_NO_PAINT) + if (ot_face->COLR->get_extents (font, glyph, extents)) return true; +#endif + if (ot_face->glyf->get_extents (font, glyph, extents)) return true; +#ifndef HB_NO_OT_FONT_CFF + if (ot_face->cff1->get_extents (font, glyph, extents)) return true; + if (ot_face->cff2->get_extents (font, glyph, extents)) return true; +#endif + + return false; +} + +#ifndef HB_NO_OT_FONT_GLYPH_NAMES +static hb_bool_t +hb_ot_get_glyph_name (hb_font_t *font HB_UNUSED, + void *font_data, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + + if (ot_face->post->get_glyph_name (glyph, name, size)) return true; +#ifndef HB_NO_OT_FONT_CFF + if (ot_face->cff1->get_glyph_name (glyph, name, size)) return true; +#endif + return false; +} +static hb_bool_t +hb_ot_get_glyph_from_name (hb_font_t *font HB_UNUSED, + void *font_data, + const char *name, int len, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; + const hb_ot_face_t *ot_face = ot_font->ot_face; + + if (ot_face->post->get_glyph_from_name (name, len, glyph)) return true; +#ifndef HB_NO_OT_FONT_CFF + if (ot_face->cff1->get_glyph_from_name (name, len, glyph)) return true; +#endif + return false; +} +#endif + +static hb_bool_t +hb_ot_get_font_h_extents (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *metrics, + void *user_data HB_UNUSED) +{ + bool ret = _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_ASCENDER, &metrics->ascender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_DESCENDER, &metrics->descender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_LINE_GAP, &metrics->line_gap); + + /* Embolden */ + int y_shift = font->y_strength; + if (font->y_scale < 0) y_shift = -y_shift; + metrics->ascender += y_shift; + + return ret; +} + +#ifndef HB_NO_VERTICAL +static hb_bool_t +hb_ot_get_font_v_extents (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *metrics, + void *user_data HB_UNUSED) +{ + return _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_ASCENDER, &metrics->ascender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_DESCENDER, &metrics->descender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_LINE_GAP, &metrics->line_gap); +} +#endif + +#ifndef HB_NO_DRAW +static void +hb_ot_draw_glyph (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_draw_funcs_t *draw_funcs, void *draw_data, + void *user_data) +{ + bool embolden = font->x_strength || font->y_strength; + hb_outline_t outline; + + { // Need draw_session to be destructed before emboldening. + hb_draw_session_t draw_session (embolden ? hb_outline_recording_pen_get_funcs () : draw_funcs, + embolden ? &outline : draw_data, font->slant_xy); + if (!font->face->table.glyf->get_path (font, glyph, draw_session)) +#ifndef HB_NO_CFF + if (!font->face->table.cff1->get_path (font, glyph, draw_session)) + if (!font->face->table.cff2->get_path (font, glyph, draw_session)) +#endif + {} + } + + if (embolden) + { + float x_shift = font->embolden_in_place ? 0 : (float) font->x_strength / 2; + float y_shift = (float) font->y_strength / 2; + if (font->x_scale < 0) x_shift = -x_shift; + if (font->y_scale < 0) y_shift = -y_shift; + outline.embolden (font->x_strength, font->y_strength, + x_shift, y_shift); + + outline.replay (draw_funcs, draw_data); + } +} +#endif + +#ifndef HB_NO_PAINT +static void +hb_ot_paint_glyph (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_paint_funcs_t *paint_funcs, void *paint_data, + unsigned int palette, + hb_color_t foreground, + void *user_data) +{ +#ifndef HB_NO_COLOR + if (font->face->table.COLR->paint_glyph (font, glyph, paint_funcs, paint_data, palette, foreground)) return; + if (font->face->table.SVG->paint_glyph (font, glyph, paint_funcs, paint_data)) return; +#ifndef HB_NO_OT_FONT_BITMAP + if (font->face->table.CBDT->paint_glyph (font, glyph, paint_funcs, paint_data)) return; + if (font->face->table.sbix->paint_glyph (font, glyph, paint_funcs, paint_data)) return; +#endif +#endif + if (font->face->table.glyf->paint_glyph (font, glyph, paint_funcs, paint_data, foreground)) return; +#ifndef HB_NO_CFF + if (font->face->table.cff1->paint_glyph (font, glyph, paint_funcs, paint_data, foreground)) return; + if (font->face->table.cff2->paint_glyph (font, glyph, paint_funcs, paint_data, foreground)) return; +#endif +} +#endif + +static inline void free_static_ot_funcs (); + +static struct hb_ot_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t +{ + static hb_font_funcs_t *create () + { + hb_font_funcs_t *funcs = hb_font_funcs_create (); + + hb_font_funcs_set_nominal_glyph_func (funcs, hb_ot_get_nominal_glyph, nullptr, nullptr); + hb_font_funcs_set_nominal_glyphs_func (funcs, hb_ot_get_nominal_glyphs, nullptr, nullptr); + hb_font_funcs_set_variation_glyph_func (funcs, hb_ot_get_variation_glyph, nullptr, nullptr); + + hb_font_funcs_set_font_h_extents_func (funcs, hb_ot_get_font_h_extents, nullptr, nullptr); + hb_font_funcs_set_glyph_h_advances_func (funcs, hb_ot_get_glyph_h_advances, nullptr, nullptr); + //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ot_get_glyph_h_origin, nullptr, nullptr); + +#ifndef HB_NO_VERTICAL + hb_font_funcs_set_font_v_extents_func (funcs, hb_ot_get_font_v_extents, nullptr, nullptr); + hb_font_funcs_set_glyph_v_advances_func (funcs, hb_ot_get_glyph_v_advances, nullptr, nullptr); + hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ot_get_glyph_v_origin, nullptr, nullptr); +#endif + +#ifndef HB_NO_DRAW + hb_font_funcs_set_draw_glyph_func (funcs, hb_ot_draw_glyph, nullptr, nullptr); +#endif + +#ifndef HB_NO_PAINT + hb_font_funcs_set_paint_glyph_func (funcs, hb_ot_paint_glyph, nullptr, nullptr); +#endif + + hb_font_funcs_set_glyph_extents_func (funcs, hb_ot_get_glyph_extents, nullptr, nullptr); + //hb_font_funcs_set_glyph_contour_point_func (funcs, hb_ot_get_glyph_contour_point, nullptr, nullptr); + +#ifndef HB_NO_OT_FONT_GLYPH_NAMES + hb_font_funcs_set_glyph_name_func (funcs, hb_ot_get_glyph_name, nullptr, nullptr); + hb_font_funcs_set_glyph_from_name_func (funcs, hb_ot_get_glyph_from_name, nullptr, nullptr); +#endif + + hb_font_funcs_make_immutable (funcs); + + hb_atexit (free_static_ot_funcs); + + return funcs; + } +} static_ot_funcs; + +static inline +void free_static_ot_funcs () +{ + static_ot_funcs.free_instance (); +} + +static hb_font_funcs_t * +_hb_ot_get_font_funcs () +{ + return static_ot_funcs.get_unconst (); +} + + +/** + * hb_ot_font_set_funcs: + * @font: #hb_font_t to work upon + * + * Sets the font functions to use when working with @font. + * + * Since: 0.9.28 + **/ +void +hb_ot_font_set_funcs (hb_font_t *font) +{ + hb_ot_font_t *ot_font = _hb_ot_font_create (font); + if (unlikely (!ot_font)) + return; + + hb_font_set_funcs (font, + _hb_ot_get_font_funcs (), + ot_font, + _hb_ot_font_destroy); +} + +#endif diff --git a/gfx/harfbuzz/src/hb-ot-font.h b/gfx/harfbuzz/src/hb-ot-font.h new file mode 100644 index 0000000000..e7959d1ae2 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-font.h @@ -0,0 +1,45 @@ +/* + * Copyright © 2014 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod, Roozbeh Pournader + */ + +#if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include instead." +#endif + +#ifndef HB_OT_FONT_H +#define HB_OT_FONT_H + +#include "hb.h" + +HB_BEGIN_DECLS + + +HB_EXTERN void +hb_ot_font_set_funcs (hb_font_t *font); + + +HB_END_DECLS + +#endif /* HB_OT_FONT_H */ diff --git a/gfx/harfbuzz/src/hb-ot-gasp-table.hh b/gfx/harfbuzz/src/hb-ot-gasp-table.hh new file mode 100644 index 0000000000..f2a9cad464 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-gasp-table.hh @@ -0,0 +1,84 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_OT_GASP_TABLE_HH +#define HB_OT_GASP_TABLE_HH + +#include "hb-open-type.hh" +#include "hb-ot-hhea-table.hh" +#include "hb-ot-os2-table.hh" +#include "hb-ot-var-hvar-table.hh" + +/* + * gasp -- Grid-fitting and Scan-conversion Procedure + * https://docs.microsoft.com/en-us/typography/opentype/spec/gasp + */ +#define HB_OT_TAG_gasp HB_TAG('g','a','s','p') + + +namespace OT { + +struct GaspRange +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT16 rangeMaxPPEM; /* Upper limit of range, in PPEM */ + HBUINT16 rangeGaspBehavior; + /* Flags describing desired rasterizer behavior. */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct gasp +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_gasp; + + const GaspRange &get_gasp_range (unsigned int i) const + { return gaspRanges[i]; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + gaspRanges.sanitize (c)); + } + + protected: + HBUINT16 version; /* Version number (set to 1) */ + Array16Of + gaspRanges; /* Number of records to follow + * Sorted by ppem */ + public: + DEFINE_SIZE_ARRAY (4, gaspRanges); +}; + +} /* namespace OT */ + + +#endif /* HB_OT_GASP_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-glyf-table.hh b/gfx/harfbuzz/src/hb-ot-glyf-table.hh new file mode 100644 index 0000000000..c32ff7636d --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-glyf-table.hh @@ -0,0 +1,35 @@ +/* + * Copyright © 2015 Google, Inc. + * Copyright © 2019 Adobe Inc. + * Copyright © 2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod, Garret Rieger, Roderick Sheeter + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_OT_GLYF_TABLE_HH +#define HB_OT_GLYF_TABLE_HH + +#include "OT/glyf/glyf.hh" + +#endif /* HB_OT_GLYF_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-hdmx-table.hh b/gfx/harfbuzz/src/hb-ot-hdmx-table.hh new file mode 100644 index 0000000000..3bfd75502a --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-hdmx-table.hh @@ -0,0 +1,170 @@ +/* + * Copyright © 2018 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Garret Rieger + */ + +#ifndef HB_OT_HDMX_TABLE_HH +#define HB_OT_HDMX_TABLE_HH + +#include "hb-open-type.hh" + +/* + * hdmx -- Horizontal Device Metrics + * https://docs.microsoft.com/en-us/typography/opentype/spec/hdmx + */ +#define HB_OT_TAG_hdmx HB_TAG('h','d','m','x') + + +namespace OT { + + +struct DeviceRecord +{ + static unsigned int get_size (unsigned count) + { return hb_ceil_to_4 (min_size + count * HBUINT8::static_size); } + + template + bool serialize (hb_serialize_context_t *c, unsigned pixelSize, Iterator it) + { + TRACE_SERIALIZE (this); + + unsigned length = it.len (); + + if (unlikely (!c->extend (this, length))) return_trace (false); + + this->pixelSize = pixelSize; + this->maxWidth = + + it + | hb_reduce (hb_max, 0u); + + + it + | hb_sink (widthsZ.as_array (length)); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c, unsigned sizeDeviceRecord) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + c->check_range (this, sizeDeviceRecord))); + } + + HBUINT8 pixelSize; /* Pixel size for following widths (as ppem). */ + HBUINT8 maxWidth; /* Maximum width. */ + UnsizedArrayOf widthsZ; /* Array of widths (numGlyphs is from the 'maxp' table). */ + public: + DEFINE_SIZE_UNBOUNDED (2); +}; + + +struct hdmx +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_hdmx; + + unsigned int get_size () const + { return min_size + numRecords * sizeDeviceRecord; } + + template + bool serialize (hb_serialize_context_t *c, unsigned version, Iterator it) + { + TRACE_SERIALIZE (this); + + if (unlikely (!c->extend_min ((*this)))) return_trace (false); + + this->version = version; + this->numRecords = it.len (); + this->sizeDeviceRecord = DeviceRecord::get_size (it ? (*it).second.len () : 0); + + for (const hb_item_type& _ : +it) + c->start_embed ()->serialize (c, _.first, _.second); + + return_trace (c->successful ()); + } + + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + hdmx *hdmx_prime = c->serializer->start_embed (); + if (unlikely (!hdmx_prime)) return_trace (false); + + auto it = + + hb_range ((unsigned) numRecords) + | hb_map ([c, this] (unsigned _) + { + const DeviceRecord *device_record = + &StructAtOffset (&firstDeviceRecord, + _ * sizeDeviceRecord); + auto row = + + hb_range (c->plan->num_output_glyphs ()) + | hb_map (c->plan->reverse_glyph_map) + | hb_map ([this, c, device_record] (hb_codepoint_t _) + { + if (c->plan->is_empty_glyph (_)) + return Null (HBUINT8); + return device_record->widthsZ.as_array (get_num_glyphs ()) [_]; + }) + ; + return hb_pair ((unsigned) device_record->pixelSize, +row); + }) + ; + + hdmx_prime->serialize (c->serializer, version, it); + return_trace (true); + } + + unsigned get_num_glyphs () const + { + return sizeDeviceRecord - DeviceRecord::min_size; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + !hb_unsigned_mul_overflows (numRecords, sizeDeviceRecord) && + min_size + numRecords * sizeDeviceRecord > numRecords * sizeDeviceRecord && + sizeDeviceRecord >= DeviceRecord::min_size && + c->check_range (this, get_size ())); + } + + protected: + HBUINT16 version; /* Table version number (0) */ + HBUINT16 numRecords; /* Number of device records. */ + HBUINT32 sizeDeviceRecord; + /* Size of a device record, 32-bit aligned. */ + DeviceRecord firstDeviceRecord; + /* Array of device records. */ + public: + DEFINE_SIZE_MIN (8); +}; + +} /* namespace OT */ + + +#endif /* HB_OT_HDMX_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-head-table.hh b/gfx/harfbuzz/src/hb-ot-head-table.hh new file mode 100644 index 0000000000..770cf52d17 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-head-table.hh @@ -0,0 +1,203 @@ +/* + * Copyright © 2010 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_HEAD_TABLE_HH +#define HB_OT_HEAD_TABLE_HH + +#include "hb-open-type.hh" + +/* + * head -- Font Header + * https://docs.microsoft.com/en-us/typography/opentype/spec/head + */ +#define HB_OT_TAG_head HB_TAG('h','e','a','d') + + +namespace OT { + + +struct head +{ + friend struct OpenTypeOffsetTable; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_head; + + unsigned int get_upem () const + { + unsigned int upem = unitsPerEm; + /* If no valid head table found, assume 1000, which matches typical Type1 usage. */ + return 16 <= upem && upem <= 16384 ? upem : 1000; + } + + bool serialize (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace ((bool) c->embed (this)); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + head *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (c->plan->normalized_coords) + { + if (unlikely (!c->serializer->check_assign (out->xMin, c->plan->head_maxp_info.xMin, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) + return_trace (false); + if (unlikely (!c->serializer->check_assign (out->xMax, c->plan->head_maxp_info.xMax, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) + return_trace (false); + if (unlikely (!c->serializer->check_assign (out->yMin, c->plan->head_maxp_info.yMin, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) + return_trace (false); + if (unlikely (!c->serializer->check_assign (out->yMax, c->plan->head_maxp_info.yMax, + HB_SERIALIZE_ERROR_INT_OVERFLOW))) + return_trace (false); + } + return_trace (true); + } + + enum mac_style_flag_t { + BOLD = 1u<<0, + ITALIC = 1u<<1, + UNDERLINE = 1u<<2, + OUTLINE = 1u<<3, + SHADOW = 1u<<4, + CONDENSED = 1u<<5, + EXPANDED = 1u<<6, + }; + + bool is_bold () const { return macStyle & BOLD; } + bool is_italic () const { return macStyle & ITALIC; } + bool is_condensed () const { return macStyle & CONDENSED; } + bool is_expanded () const { return macStyle & EXPANDED; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + version.major == 1 && + magicNumber == 0x5F0F3CF5u); + } + + protected: + FixedVersion<>version; /* Version of the head table--currently + * 0x00010000u for version 1.0. */ + FixedVersion<>fontRevision; /* Set by font manufacturer. */ + HBUINT32 checkSumAdjustment; /* To compute: set it to 0, sum the + * entire font as HBUINT32, then store + * 0xB1B0AFBAu - sum. */ + HBUINT32 magicNumber; /* Set to 0x5F0F3CF5u. */ + public: + HBUINT16 flags; /* Bit 0: Baseline for font at y=0; + * Bit 1: Left sidebearing point at x=0; + * Bit 2: Instructions may depend on point size; + * Bit 3: Force ppem to integer values for all + * internal scaler math; may use fractional + * ppem sizes if this bit is clear; + * Bit 4: Instructions may alter advance width + * (the advance widths might not scale linearly); + * Bits 5-10: These should be set according to + * Apple's specification. However, they are not + * implemented in OpenType. + * Bit 5: This bit should be set in fonts that are + * intended to e laid out vertically, and in + * which the glyphs have been drawn such that an + * x-coordinate of 0 corresponds to the desired + * vertical baseline. + * Bit 6: This bit must be set to zero. + * Bit 7: This bit should be set if the font + * requires layout for correct linguistic + * rendering (e.g. Arabic fonts). + * Bit 8: This bit should be set for a GX font + * which has one or more metamorphosis effects + * designated as happening by default. + * Bit 9: This bit should be set if the font + * contains any strong right-to-left glyphs. + * Bit 10: This bit should be set if the font + * contains Indic-style rearrangement effects. + * Bit 11: Font data is 'lossless,' as a result + * of having been compressed and decompressed + * with the Agfa MicroType Express engine. + * Bit 12: Font converted (produce compatible metrics) + * Bit 13: Font optimized for ClearType™. + * Note, fonts that rely on embedded bitmaps (EBDT) + * for rendering should not be considered optimized + * for ClearType, and therefore should keep this bit + * cleared. + * Bit 14: Last Resort font. If set, indicates that + * the glyphs encoded in the cmap subtables are simply + * generic symbolic representations of code point + * ranges and don’t truly represent support for those + * code points. If unset, indicates that the glyphs + * encoded in the cmap subtables represent proper + * support for those code points. + * Bit 15: Reserved, set to 0. */ + protected: + HBUINT16 unitsPerEm; /* Valid range is from 16 to 16384. This value + * should be a power of 2 for fonts that have + * TrueType outlines. */ + LONGDATETIME created; /* Number of seconds since 12:00 midnight, + January 1, 1904. 64-bit integer */ + LONGDATETIME modified; /* Number of seconds since 12:00 midnight, + January 1, 1904. 64-bit integer */ + public: + HBINT16 xMin; /* For all glyph bounding boxes. */ + HBINT16 yMin; /* For all glyph bounding boxes. */ + HBINT16 xMax; /* For all glyph bounding boxes. */ + HBINT16 yMax; /* For all glyph bounding boxes. */ + protected: + HBUINT16 macStyle; /* Bit 0: Bold (if set to 1); + * Bit 1: Italic (if set to 1) + * Bit 2: Underline (if set to 1) + * Bit 3: Outline (if set to 1) + * Bit 4: Shadow (if set to 1) + * Bit 5: Condensed (if set to 1) + * Bit 6: Extended (if set to 1) + * Bits 7-15: Reserved (set to 0). */ + HBUINT16 lowestRecPPEM; /* Smallest readable size in pixels. */ + HBINT16 fontDirectionHint; /* Deprecated (Set to 2). + * 0: Fully mixed directional glyphs; + * 1: Only strongly left to right; + * 2: Like 1 but also contains neutrals; + * -1: Only strongly right to left; + * -2: Like -1 but also contains neutrals. */ + public: + HBUINT16 indexToLocFormat; /* 0 for short offsets, 1 for long. */ + HBUINT16 glyphDataFormat; /* 0 for current format. */ + + DEFINE_SIZE_STATIC (54); +}; + + +} /* namespace OT */ + + +#endif /* HB_OT_HEAD_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-hhea-table.hh b/gfx/harfbuzz/src/hb-ot-hhea-table.hh new file mode 100644 index 0000000000..d9c9bd3537 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-hhea-table.hh @@ -0,0 +1,104 @@ +/* + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_HHEA_TABLE_HH +#define HB_OT_HHEA_TABLE_HH + +#include "hb-open-type.hh" + +/* + * hhea -- Horizontal Header + * https://docs.microsoft.com/en-us/typography/opentype/spec/hhea + * vhea -- Vertical Header + * https://docs.microsoft.com/en-us/typography/opentype/spec/vhea + */ +#define HB_OT_TAG_hhea HB_TAG('h','h','e','a') +#define HB_OT_TAG_vhea HB_TAG('v','h','e','a') + + +namespace OT { + + +template +struct _hea +{ + bool has_data () const { return version.major; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && likely (version.major == 1)); + } + + public: + FixedVersion<>version; /* 0x00010000u for version 1.0. */ + FWORD ascender; /* Typographic ascent. */ + FWORD descender; /* Typographic descent. */ + FWORD lineGap; /* Typographic line gap. */ + UFWORD advanceMax; /* Maximum advance width/height value in + * metrics table. */ + FWORD minLeadingBearing; + /* Minimum left/top sidebearing value in + * metrics table. */ + FWORD minTrailingBearing; + /* Minimum right/bottom sidebearing value; + * calculated as Min(aw - lsb - + * (xMax - xMin)) for horizontal. */ + FWORD maxExtent; /* horizontal: Max(lsb + (xMax - xMin)), + * vertical: minLeadingBearing+(yMax-yMin). */ + HBINT16 caretSlopeRise; /* Used to calculate the slope of the + * cursor (rise/run); 1 for vertical caret, + * 0 for horizontal.*/ + HBINT16 caretSlopeRun; /* 0 for vertical caret, 1 for horizontal. */ + HBINT16 caretOffset; /* The amount by which a slanted + * highlight on a glyph needs + * to be shifted to produce the + * best appearance. Set to 0 for + * non-slanted fonts. */ + HBINT16 reserved1; /* Set to 0. */ + HBINT16 reserved2; /* Set to 0. */ + HBINT16 reserved3; /* Set to 0. */ + HBINT16 reserved4; /* Set to 0. */ + HBINT16 metricDataFormat;/* 0 for current format. */ + HBUINT16 numberOfLongMetrics; + /* Number of LongMetric entries in metric + * table. */ + public: + DEFINE_SIZE_STATIC (36); +}; + +struct hhea : _hea { + static constexpr hb_tag_t tableTag = HB_OT_TAG_hhea; +}; +struct vhea : _hea { + static constexpr hb_tag_t tableTag = HB_OT_TAG_vhea; +}; + + +} /* namespace OT */ + + +#endif /* HB_OT_HHEA_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-hmtx-table.hh b/gfx/harfbuzz/src/hb-ot-hmtx-table.hh new file mode 100644 index 0000000000..835a1a585e --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-hmtx-table.hh @@ -0,0 +1,469 @@ +/* + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod, Roderick Sheeter + */ + +#ifndef HB_OT_HMTX_TABLE_HH +#define HB_OT_HMTX_TABLE_HH + +#include "hb-open-type.hh" +#include "hb-ot-maxp-table.hh" +#include "hb-ot-hhea-table.hh" +#include "hb-ot-var-hvar-table.hh" +#include "hb-ot-var-mvar-table.hh" +#include "hb-ot-metrics.hh" + +/* + * hmtx -- Horizontal Metrics + * https://docs.microsoft.com/en-us/typography/opentype/spec/hmtx + * vmtx -- Vertical Metrics + * https://docs.microsoft.com/en-us/typography/opentype/spec/vmtx + */ +#define HB_OT_TAG_hmtx HB_TAG('h','m','t','x') +#define HB_OT_TAG_vmtx HB_TAG('v','m','t','x') + + +HB_INTERNAL bool +_glyf_get_leading_bearing_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical, int *lsb); + +HB_INTERNAL unsigned +_glyf_get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical); + +HB_INTERNAL bool +_glyf_get_leading_bearing_without_var_unscaled (hb_face_t *face, hb_codepoint_t gid, bool is_vertical, int *lsb); + + +namespace OT { + + +struct LongMetric +{ + UFWORD advance; /* Advance width/height. */ + FWORD sb; /* Leading (left/top) side bearing. */ + public: + DEFINE_SIZE_STATIC (4); +}; + + +template +struct hmtxvmtx +{ + bool sanitize (hb_sanitize_context_t *c HB_UNUSED) const + { + TRACE_SANITIZE (this); + /* We don't check for anything specific here. The users of the + * struct do all the hard work... */ + return_trace (true); + } + + const hb_hashmap_t>* get_mtx_map (const hb_subset_plan_t *plan) const + { return T::is_horizontal ? &plan->hmtx_map : &plan->vmtx_map; } + + bool subset_update_header (hb_subset_context_t *c, + unsigned int num_hmetrics, + const hb_hashmap_t> *mtx_map, + const hb_map_t *bounds_map) const + { + hb_blob_t *src_blob = hb_sanitize_context_t ().reference_table (c->plan->source, H::tableTag); + hb_blob_t *dest_blob = hb_blob_copy_writable_or_fail (src_blob); + hb_blob_destroy (src_blob); + + if (unlikely (!dest_blob)) { + return false; + } + + unsigned int length; + H *table = (H *) hb_blob_get_data (dest_blob, &length); + c->serializer->check_assign (table->numberOfLongMetrics, num_hmetrics, HB_SERIALIZE_ERROR_INT_OVERFLOW); + +#ifndef HB_NO_VAR + if (c->plan->normalized_coords) + { + auto &MVAR = *c->plan->source->table.MVAR; + if (T::is_horizontal) + { + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_RISE, caretSlopeRise); + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_RUN, caretSlopeRun); + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_OFFSET, caretOffset); + } + else + { + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_RISE, caretSlopeRise); + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_RUN, caretSlopeRun); + HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_OFFSET, caretOffset); + } + + int min_lsb = 0x7FFF; + int min_rsb = 0x7FFF; + int max_extent = -0x7FFF; + unsigned max_adv = 0; + for (const auto _ : *mtx_map) + { + hb_codepoint_t gid = _.first; + unsigned adv = _.second.first; + int lsb = _.second.second; + max_adv = hb_max (max_adv, adv); + + if (bounds_map->has (gid)) + { + unsigned bound_width = bounds_map->get (gid); + int rsb = adv - lsb - bound_width; + int extent = lsb + bound_width; + min_lsb = hb_min (min_lsb, lsb); + min_rsb = hb_min (min_rsb, rsb); + max_extent = hb_max (max_extent, extent); + } + } + + table->advanceMax = max_adv; + if (!bounds_map->is_empty ()) + { + table->minLeadingBearing = min_lsb; + table->minTrailingBearing = min_rsb; + table->maxExtent = max_extent; + } + } +#endif + + bool result = c->plan->add_table (H::tableTag, dest_blob); + hb_blob_destroy (dest_blob); + + return result; + } + + template + void serialize (hb_serialize_context_t *c, + Iterator it, + unsigned num_long_metrics) + { + unsigned idx = 0; + for (auto _ : it) + { + if (idx < num_long_metrics) + { + LongMetric lm; + lm.advance = _.first; + lm.sb = _.second; + if (unlikely (!c->embed (&lm))) return; + } + else if (idx < 0x10000u) + { + FWORD *sb = c->allocate_size (FWORD::static_size); + if (unlikely (!sb)) return; + *sb = _.second; + } + else + { + // TODO: This does not do tail optimization. + UFWORD *adv = c->allocate_size (UFWORD::static_size); + if (unlikely (!adv)) return; + *adv = _.first; + } + idx++; + } + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + + T *table_prime = c->serializer->start_embed (); + if (unlikely (!table_prime)) return_trace (false); + + accelerator_t _mtx (c->plan->source); + unsigned num_long_metrics; + const hb_hashmap_t> *mtx_map = get_mtx_map (c->plan); + { + /* Determine num_long_metrics to encode. */ + auto& plan = c->plan; + + num_long_metrics = hb_min (plan->num_output_glyphs (), 0xFFFFu); + unsigned int last_advance = get_new_gid_advance_unscaled (plan, mtx_map, num_long_metrics - 1, _mtx); + while (num_long_metrics > 1 && + last_advance == get_new_gid_advance_unscaled (plan, mtx_map, num_long_metrics - 2, _mtx)) + { + num_long_metrics--; + } + } + + auto it = + + hb_range (c->plan->num_output_glyphs ()) + | hb_map ([c, &_mtx, mtx_map] (unsigned _) + { + if (!mtx_map->has (_)) + { + hb_codepoint_t old_gid; + if (!c->plan->old_gid_for_new_gid (_, &old_gid)) + return hb_pair (0u, 0); + int lsb = 0; + if (!_mtx.get_leading_bearing_without_var_unscaled (old_gid, &lsb)) + (void) _glyf_get_leading_bearing_without_var_unscaled (c->plan->source, old_gid, !T::is_horizontal, &lsb); + return hb_pair (_mtx.get_advance_without_var_unscaled (old_gid), +lsb); + } + return mtx_map->get (_); + }) + ; + + table_prime->serialize (c->serializer, it, num_long_metrics); + + if (unlikely (c->serializer->in_error ())) + return_trace (false); + + // Amend header num hmetrics + if (unlikely (!subset_update_header (c, num_long_metrics, mtx_map, + T::is_horizontal ? &c->plan->bounds_width_map : &c->plan->bounds_height_map))) + return_trace (false); + + return_trace (true); + } + + struct accelerator_t + { + friend struct hmtxvmtx; + + accelerator_t (hb_face_t *face) + { + table = hb_sanitize_context_t ().reference_table (face, T::tableTag); + var_table = hb_sanitize_context_t ().reference_table (face, T::variationsTag); + + default_advance = T::is_horizontal ? hb_face_get_upem (face) / 2 : hb_face_get_upem (face); + + /* Populate count variables and sort them out as we go */ + + unsigned int len = table.get_length (); + if (len & 1) + len--; + + num_long_metrics = T::is_horizontal ? + face->table.hhea->numberOfLongMetrics : +#ifndef HB_NO_VERTICAL + face->table.vhea->numberOfLongMetrics +#else + 0 +#endif + ; + if (unlikely (num_long_metrics * 4 > len)) + num_long_metrics = len / 4; + len -= num_long_metrics * 4; + + num_bearings = face->table.maxp->get_num_glyphs (); + + if (unlikely (num_bearings < num_long_metrics)) + num_bearings = num_long_metrics; + if (unlikely ((num_bearings - num_long_metrics) * 2 > len)) + num_bearings = num_long_metrics + len / 2; + len -= (num_bearings - num_long_metrics) * 2; + + /* We MUST set num_bearings to zero if num_long_metrics is zero. + * Our get_advance() depends on that. */ + if (unlikely (!num_long_metrics)) + num_bearings = num_long_metrics = 0; + + num_advances = num_bearings + len / 2; + num_glyphs = face->get_num_glyphs (); + if (num_glyphs < num_advances) + num_glyphs = num_advances; + } + ~accelerator_t () + { + table.destroy (); + var_table.destroy (); + } + + bool has_data () const { return (bool) num_bearings; } + + bool get_leading_bearing_without_var_unscaled (hb_codepoint_t glyph, + int *lsb) const + { + if (glyph < num_long_metrics) + { + *lsb = table->longMetricZ[glyph].sb; + return true; + } + + if (unlikely (glyph >= num_bearings)) + return false; + + const FWORD *bearings = (const FWORD *) &table->longMetricZ[num_long_metrics]; + *lsb = bearings[glyph - num_long_metrics]; + return true; + } + + bool get_leading_bearing_with_var_unscaled (hb_font_t *font, + hb_codepoint_t glyph, + int *lsb) const + { + if (!font->num_coords) + return get_leading_bearing_without_var_unscaled (glyph, lsb); + +#ifndef HB_NO_VAR + float delta; + if (var_table->get_lsb_delta_unscaled (glyph, font->coords, font->num_coords, &delta) && + get_leading_bearing_without_var_unscaled (glyph, lsb)) + { + *lsb += roundf (delta); + return true; + } + + return _glyf_get_leading_bearing_with_var_unscaled (font, glyph, T::tableTag == HB_OT_TAG_vmtx, lsb); +#else + return false; +#endif + } + + unsigned int get_advance_without_var_unscaled (hb_codepoint_t glyph) const + { + /* OpenType case. */ + if (glyph < num_bearings) + return table->longMetricZ[hb_min (glyph, (uint32_t) num_long_metrics - 1)].advance; + + /* If num_advances is zero, it means we don't have the metrics table + * for this direction: return default advance. Otherwise, there's a + * well-defined answer. */ + if (unlikely (!num_advances)) + return default_advance; + +#ifdef HB_NO_BEYOND_64K + return 0; +#endif + + if (unlikely (glyph >= num_glyphs)) + return 0; + + /* num_bearings <= glyph < num_glyphs; + * num_bearings <= num_advances */ + + if (num_bearings == num_advances) + return get_advance_without_var_unscaled (num_bearings - 1); + + const FWORD *bearings = (const FWORD *) &table->longMetricZ[num_long_metrics]; + const UFWORD *advances = (const UFWORD *) &bearings[num_bearings - num_long_metrics]; + + return advances[hb_min (glyph - num_bearings, num_advances - num_bearings - 1)]; + } + + unsigned get_advance_with_var_unscaled (hb_codepoint_t glyph, + hb_font_t *font, + VariationStore::cache_t *store_cache = nullptr) const + { + unsigned int advance = get_advance_without_var_unscaled (glyph); + +#ifndef HB_NO_VAR + if (unlikely (glyph >= num_bearings) || !font->num_coords) + return advance; + + if (var_table.get_length ()) + return advance + roundf (var_table->get_advance_delta_unscaled (glyph, + font->coords, font->num_coords, + store_cache)); + + return _glyf_get_advance_with_var_unscaled (font, glyph, T::tableTag == HB_OT_TAG_vmtx); +#else + return advance; +#endif + } + + protected: + // 0 <= num_long_metrics <= num_bearings <= num_advances <= num_glyphs + unsigned num_long_metrics; + unsigned num_bearings; + unsigned num_advances; + unsigned num_glyphs; + + unsigned int default_advance; + + public: + hb_blob_ptr_t table; + hb_blob_ptr_t var_table; + }; + + /* get advance: when no variations, call get_advance_without_var_unscaled. + * when there're variations, get advance value from mtx_map in subset_plan*/ + unsigned get_new_gid_advance_unscaled (const hb_subset_plan_t *plan, + const hb_hashmap_t> *mtx_map, + unsigned new_gid, + const accelerator_t &_mtx) const + { + if (mtx_map->is_empty ()) + { + hb_codepoint_t old_gid = 0; + return plan->old_gid_for_new_gid (new_gid, &old_gid) ? + _mtx.get_advance_without_var_unscaled (old_gid) : 0; + } + return mtx_map->get (new_gid).first; + } + + protected: + UnsizedArrayOf + longMetricZ; /* Paired advance width and leading + * bearing values for each glyph. The + * value numOfHMetrics comes from + * the 'hhea' table. If the font is + * monospaced, only one entry need + * be in the array, but that entry is + * required. The last entry applies to + * all subsequent glyphs. */ +/*UnsizedArrayOf leadingBearingX;*/ + /* Here the advance is assumed + * to be the same as the advance + * for the last entry above. The + * number of entries in this array is + * derived from numGlyphs (from 'maxp' + * table) minus numberOfLongMetrics. + * This generally is used with a run + * of monospaced glyphs (e.g., Kanji + * fonts or Courier fonts). Only one + * run is allowed and it must be at + * the end. This allows a monospaced + * font to vary the side bearing + * values for each glyph. */ +/*UnsizedArrayOfadvancesX;*/ + /* TODO Document. */ + public: + DEFINE_SIZE_ARRAY (0, longMetricZ); +}; + +struct hmtx : hmtxvmtx { + static constexpr hb_tag_t tableTag = HB_OT_TAG_hmtx; + static constexpr hb_tag_t variationsTag = HB_OT_TAG_HVAR; + static constexpr bool is_horizontal = true; +}; +struct vmtx : hmtxvmtx { + static constexpr hb_tag_t tableTag = HB_OT_TAG_vmtx; + static constexpr hb_tag_t variationsTag = HB_OT_TAG_VVAR; + static constexpr bool is_horizontal = false; +}; + +struct hmtx_accelerator_t : hmtx::accelerator_t { + hmtx_accelerator_t (hb_face_t *face) : hmtx::accelerator_t (face) {} +}; +struct vmtx_accelerator_t : vmtx::accelerator_t { + vmtx_accelerator_t (hb_face_t *face) : vmtx::accelerator_t (face) {} +}; + +} /* namespace OT */ + + +#endif /* HB_OT_HMTX_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-kern-table.hh b/gfx/harfbuzz/src/hb-ot-kern-table.hh new file mode 100644 index 0000000000..ffa11bc249 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-kern-table.hh @@ -0,0 +1,359 @@ +/* + * Copyright © 2017 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_KERN_TABLE_HH +#define HB_OT_KERN_TABLE_HH + +#include "hb-aat-layout-kerx-table.hh" + + +/* + * kern -- Kerning + * https://docs.microsoft.com/en-us/typography/opentype/spec/kern + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6kern.html + */ +#define HB_OT_TAG_kern HB_TAG('k','e','r','n') + + +namespace OT { + + +template +struct KernSubTableFormat3 +{ + int get_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { + hb_array_t kernValue = kernValueZ.as_array (kernValueCount); + hb_array_t leftClass = StructAfter> (kernValue).as_array (glyphCount); + hb_array_t rightClass = StructAfter> (leftClass).as_array (glyphCount); + hb_array_t kernIndex = StructAfter> (rightClass).as_array (leftClassCount * rightClassCount); + + unsigned int leftC = leftClass[left]; + unsigned int rightC = rightClass[right]; + if (unlikely (leftC >= leftClassCount || rightC >= rightClassCount)) + return 0; + unsigned int i = leftC * rightClassCount + rightC; + return kernValue[kernIndex[i]]; + } + + bool apply (AAT::hb_aat_apply_context_t *c) const + { + TRACE_APPLY (this); + + if (!c->plan->requested_kerning) + return false; + + if (header.coverage & header.Backwards) + return false; + + hb_kern_machine_t machine (*this, header.coverage & header.CrossStream); + machine.kern (c->font, c->buffer, c->plan->kern_mask); + + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + c->check_range (kernValueZ, + kernValueCount * sizeof (FWORD) + + glyphCount * 2 + + leftClassCount * rightClassCount)); + } + + protected: + KernSubTableHeader + header; + HBUINT16 glyphCount; /* The number of glyphs in this font. */ + HBUINT8 kernValueCount; /* The number of kerning values. */ + HBUINT8 leftClassCount; /* The number of left-hand classes. */ + HBUINT8 rightClassCount;/* The number of right-hand classes. */ + HBUINT8 flags; /* Set to zero (reserved for future use). */ + UnsizedArrayOf + kernValueZ; /* The kerning values. + * Length kernValueCount. */ +#if 0 + UnsizedArrayOf + leftClass; /* The left-hand classes. + * Length glyphCount. */ + UnsizedArrayOf + rightClass; /* The right-hand classes. + * Length glyphCount. */ + UnsizedArrayOfkernIndex; + /* The indices into the kernValue array. + * Length leftClassCount * rightClassCount */ +#endif + public: + DEFINE_SIZE_ARRAY (KernSubTableHeader::static_size + 6, kernValueZ); +}; + +template +struct KernSubTable +{ + unsigned int get_size () const { return u.header.length; } + unsigned int get_type () const { return u.header.format; } + + int get_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { + switch (get_type ()) { + /* This method hooks up to hb_font_t's get_h_kerning. Only support Format0. */ + case 0: return u.format0.get_kerning (left, right); + default:return 0; + } + } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + unsigned int subtable_type = get_type (); + TRACE_DISPATCH (this, subtable_type); + switch (subtable_type) { + case 0: return_trace (c->dispatch (u.format0)); +#ifndef HB_NO_AAT_SHAPE + case 1: return_trace (u.header.apple ? c->dispatch (u.format1, std::forward (ds)...) : c->default_return_value ()); +#endif + case 2: return_trace (c->dispatch (u.format2)); +#ifndef HB_NO_AAT_SHAPE + case 3: return_trace (u.header.apple ? c->dispatch (u.format3, std::forward (ds)...) : c->default_return_value ()); +#endif + default: return_trace (c->default_return_value ()); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.header.sanitize (c) || + u.header.length < u.header.min_size || + !c->check_range (this, u.header.length))) return_trace (false); + + return_trace (dispatch (c)); + } + + public: + union { + KernSubTableHeader header; + AAT::KerxSubTableFormat0 format0; + AAT::KerxSubTableFormat1 format1; + AAT::KerxSubTableFormat2 format2; + KernSubTableFormat3 format3; + } u; + public: + DEFINE_SIZE_MIN (KernSubTableHeader::static_size); +}; + + +struct KernOTSubTableHeader +{ + static constexpr bool apple = false; + typedef AAT::ObsoleteTypes Types; + + unsigned tuple_count () const { return 0; } + bool is_horizontal () const { return (coverage & Horizontal); } + + enum Coverage + { + Horizontal = 0x01u, + Minimum = 0x02u, + CrossStream = 0x04u, + Override = 0x08u, + + /* Not supported: */ + Backwards = 0x00u, + Variation = 0x00u, + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT16 versionZ; /* Unused. */ + HBUINT16 length; /* Length of the subtable (including this header). */ + HBUINT8 format; /* Subtable format. */ + HBUINT8 coverage; /* Coverage bits. */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct KernOT : AAT::KerxTable +{ + friend struct AAT::KerxTable; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_kern; + static constexpr unsigned minVersion = 0u; + + typedef KernOTSubTableHeader SubTableHeader; + typedef SubTableHeader::Types Types; + typedef KernSubTable SubTable; + + protected: + HBUINT16 version; /* Version--0x0000u */ + HBUINT16 tableCount; /* Number of subtables in the kerning table. */ + SubTable firstSubTable; /* Subtables. */ + public: + DEFINE_SIZE_MIN (4); +}; + + +struct KernAATSubTableHeader +{ + static constexpr bool apple = true; + typedef AAT::ObsoleteTypes Types; + + unsigned tuple_count () const { return 0; } + bool is_horizontal () const { return !(coverage & Vertical); } + + enum Coverage + { + Vertical = 0x80u, + CrossStream = 0x40u, + Variation = 0x20u, + + /* Not supported: */ + Backwards = 0x00u, + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + HBUINT32 length; /* Length of the subtable (including this header). */ + HBUINT8 coverage; /* Coverage bits. */ + HBUINT8 format; /* Subtable format. */ + HBUINT16 tupleIndex; /* The tuple index (used for variations fonts). + * This value specifies which tuple this subtable covers. + * Note: We don't implement. */ + public: + DEFINE_SIZE_STATIC (8); +}; + +struct KernAAT : AAT::KerxTable +{ + friend struct AAT::KerxTable; + + static constexpr hb_tag_t tableTag = HB_OT_TAG_kern; + static constexpr unsigned minVersion = 0x00010000u; + + typedef KernAATSubTableHeader SubTableHeader; + typedef SubTableHeader::Types Types; + typedef KernSubTable SubTable; + + protected: + HBUINT32 version; /* Version--0x00010000u */ + HBUINT32 tableCount; /* Number of subtables in the kerning table. */ + SubTable firstSubTable; /* Subtables. */ + public: + DEFINE_SIZE_MIN (8); +}; + +struct kern +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_kern; + + bool has_data () const { return u.version32; } + unsigned get_type () const { return u.major; } + + bool has_state_machine () const + { + switch (get_type ()) { + case 0: return u.ot.has_state_machine (); +#ifndef HB_NO_AAT_SHAPE + case 1: return u.aat.has_state_machine (); +#endif + default:return false; + } + } + + bool has_cross_stream () const + { + switch (get_type ()) { + case 0: return u.ot.has_cross_stream (); +#ifndef HB_NO_AAT_SHAPE + case 1: return u.aat.has_cross_stream (); +#endif + default:return false; + } + } + + int get_h_kerning (hb_codepoint_t left, hb_codepoint_t right) const + { + switch (get_type ()) { + case 0: return u.ot.get_h_kerning (left, right); +#ifndef HB_NO_AAT_SHAPE + case 1: return u.aat.get_h_kerning (left, right); +#endif + default:return 0; + } + } + + bool apply (AAT::hb_aat_apply_context_t *c) const + { return dispatch (c); } + + template + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + unsigned int subtable_type = get_type (); + TRACE_DISPATCH (this, subtable_type); + switch (subtable_type) { + case 0: return_trace (c->dispatch (u.ot, std::forward (ds)...)); +#ifndef HB_NO_AAT_SHAPE + case 1: return_trace (c->dispatch (u.aat, std::forward (ds)...)); +#endif + default: return_trace (c->default_return_value ()); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (!u.version32.sanitize (c)) return_trace (false); + return_trace (dispatch (c)); + } + + protected: + union { + HBUINT32 version32; + HBUINT16 major; + KernOT ot; +#ifndef HB_NO_AAT_SHAPE + KernAAT aat; +#endif + } u; + public: + DEFINE_SIZE_UNION (4, version32); +}; + +} /* namespace OT */ + + +#endif /* HB_OT_KERN_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-layout-base-table.hh b/gfx/harfbuzz/src/hb-ot-layout-base-table.hh new file mode 100644 index 0000000000..8179e5acd5 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-layout-base-table.hh @@ -0,0 +1,525 @@ +/* + * Copyright © 2016 Elie Roux + * Copyright © 2018 Google, Inc. + * Copyright © 2018-2019 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_LAYOUT_BASE_TABLE_HH +#define HB_OT_LAYOUT_BASE_TABLE_HH + +#include "hb-open-type.hh" +#include "hb-ot-layout-common.hh" + +namespace OT { + +/* + * BASE -- Baseline + * https://docs.microsoft.com/en-us/typography/opentype/spec/base + */ + +struct BaseCoordFormat1 +{ + hb_position_t get_coord (hb_font_t *font, hb_direction_t direction) const + { + return HB_DIRECTION_IS_HORIZONTAL (direction) ? font->em_scale_y (coordinate) : font->em_scale_x (coordinate); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 1 */ + FWORD coordinate; /* X or Y value, in design units */ + public: + DEFINE_SIZE_STATIC (4); +}; + +struct BaseCoordFormat2 +{ + hb_position_t get_coord (hb_font_t *font, hb_direction_t direction) const + { + /* TODO */ + return HB_DIRECTION_IS_HORIZONTAL (direction) ? font->em_scale_y (coordinate) : font->em_scale_x (coordinate); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + HBUINT16 format; /* Format identifier--format = 2 */ + FWORD coordinate; /* X or Y value, in design units */ + HBGlyphID16 referenceGlyph; /* Glyph ID of control glyph */ + HBUINT16 coordPoint; /* Index of contour point on the + * reference glyph */ + public: + DEFINE_SIZE_STATIC (8); +}; + +struct BaseCoordFormat3 +{ + hb_position_t get_coord (hb_font_t *font, + const VariationStore &var_store, + hb_direction_t direction) const + { + const Device &device = this+deviceTable; + + return HB_DIRECTION_IS_HORIZONTAL (direction) + ? font->em_scale_y (coordinate) + device.get_y_delta (font, var_store) + : font->em_scale_x (coordinate) + device.get_x_delta (font, var_store); + } + + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + deviceTable.sanitize (c, this))); + } + + protected: + HBUINT16 format; /* Format identifier--format = 3 */ + FWORD coordinate; /* X or Y value, in design units */ + Offset16To + deviceTable; /* Offset to Device table for X or + * Y value, from beginning of + * BaseCoord table (may be NULL). */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct BaseCoord +{ + bool has_data () const { return u.format; } + + hb_position_t get_coord (hb_font_t *font, + const VariationStore &var_store, + hb_direction_t direction) const + { + switch (u.format) { + case 1: return u.format1.get_coord (font, direction); + case 2: return u.format2.get_coord (font, direction); + case 3: return u.format3.get_coord (font, var_store, direction); + default:return 0; + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.format.sanitize (c))) return_trace (false); + switch (u.format) { + case 1: return_trace (u.format1.sanitize (c)); + case 2: return_trace (u.format2.sanitize (c)); + case 3: return_trace (u.format3.sanitize (c)); + default:return_trace (false); + } + } + + protected: + union { + HBUINT16 format; + BaseCoordFormat1 format1; + BaseCoordFormat2 format2; + BaseCoordFormat3 format3; + } u; + public: + DEFINE_SIZE_UNION (2, format); +}; + +struct FeatMinMaxRecord +{ + int cmp (hb_tag_t key) const { return tag.cmp (key); } + + bool has_data () const { return tag; } + + void get_min_max (const BaseCoord **min, const BaseCoord **max) const + { + if (likely (min)) *min = &(this+minCoord); + if (likely (max)) *max = &(this+maxCoord); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + minCoord.sanitize (c, this) && + maxCoord.sanitize (c, this))); + } + + protected: + Tag tag; /* 4-byte feature identification tag--must + * match feature tag in FeatureList */ + Offset16To + minCoord; /* Offset to BaseCoord table that defines + * the minimum extent value, from beginning + * of MinMax table (may be NULL) */ + Offset16To + maxCoord; /* Offset to BaseCoord table that defines + * the maximum extent value, from beginning + * of MinMax table (may be NULL) */ + public: + DEFINE_SIZE_STATIC (8); + +}; + +struct MinMax +{ + void get_min_max (hb_tag_t feature_tag, + const BaseCoord **min, + const BaseCoord **max) const + { + const FeatMinMaxRecord &minMaxCoord = featMinMaxRecords.bsearch (feature_tag); + if (minMaxCoord.has_data ()) + minMaxCoord.get_min_max (min, max); + else + { + if (likely (min)) *min = &(this+minCoord); + if (likely (max)) *max = &(this+maxCoord); + } + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + minCoord.sanitize (c, this) && + maxCoord.sanitize (c, this) && + featMinMaxRecords.sanitize (c, this))); + } + + protected: + Offset16To + minCoord; /* Offset to BaseCoord table that defines + * minimum extent value, from the beginning + * of MinMax table (may be NULL) */ + Offset16To + maxCoord; /* Offset to BaseCoord table that defines + * maximum extent value, from the beginning + * of MinMax table (may be NULL) */ + SortedArray16Of + featMinMaxRecords; + /* Array of FeatMinMaxRecords, in alphabetical + * order by featureTableTag */ + public: + DEFINE_SIZE_ARRAY (6, featMinMaxRecords); +}; + +struct BaseValues +{ + const BaseCoord &get_base_coord (int baseline_tag_index) const + { + if (baseline_tag_index == -1) baseline_tag_index = defaultIndex; + return this+baseCoords[baseline_tag_index]; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + baseCoords.sanitize (c, this))); + } + + protected: + Index defaultIndex; /* Index number of default baseline for this + * script — equals index position of baseline tag + * in baselineTags array of the BaseTagList */ + Array16OfOffset16To + baseCoords; /* Number of BaseCoord tables defined — should equal + * baseTagCount in the BaseTagList + * + * Array of offsets to BaseCoord tables, from beginning of + * BaseValues table — order matches baselineTags array in + * the BaseTagList */ + public: + DEFINE_SIZE_ARRAY (4, baseCoords); +}; + +struct BaseLangSysRecord +{ + int cmp (hb_tag_t key) const { return baseLangSysTag.cmp (key); } + + bool has_data () const { return baseLangSysTag; } + + const MinMax &get_min_max () const { return this+minMax; } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + minMax.sanitize (c, this))); + } + + protected: + Tag baseLangSysTag; /* 4-byte language system identification tag */ + Offset16To + minMax; /* Offset to MinMax table, from beginning + * of BaseScript table */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct BaseScript +{ + const MinMax &get_min_max (hb_tag_t language_tag) const + { + const BaseLangSysRecord& record = baseLangSysRecords.bsearch (language_tag); + return record.has_data () ? record.get_min_max () : this+defaultMinMax; + } + + const BaseCoord &get_base_coord (int baseline_tag_index) const + { return (this+baseValues).get_base_coord (baseline_tag_index); } + + bool has_data () const { return baseValues; } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + baseValues.sanitize (c, this) && + defaultMinMax.sanitize (c, this) && + baseLangSysRecords.sanitize (c, this))); + } + + protected: + Offset16To + baseValues; /* Offset to BaseValues table, from beginning + * of BaseScript table (may be NULL) */ + Offset16To + defaultMinMax; /* Offset to MinMax table, from beginning of + * BaseScript table (may be NULL) */ + SortedArray16Of + baseLangSysRecords; + /* Number of BaseLangSysRecords + * defined — may be zero (0) */ + + public: + DEFINE_SIZE_ARRAY (6, baseLangSysRecords); +}; + +struct BaseScriptList; +struct BaseScriptRecord +{ + int cmp (hb_tag_t key) const { return baseScriptTag.cmp (key); } + + bool has_data () const { return baseScriptTag; } + + const BaseScript &get_base_script (const BaseScriptList *list) const + { return list+baseScript; } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + baseScript.sanitize (c, base))); + } + + protected: + Tag baseScriptTag; /* 4-byte script identification tag */ + Offset16To + baseScript; /* Offset to BaseScript table, from beginning + * of BaseScriptList */ + + public: + DEFINE_SIZE_STATIC (6); +}; + +struct BaseScriptList +{ + const BaseScript &get_base_script (hb_tag_t script) const + { + const BaseScriptRecord *record = &baseScriptRecords.bsearch (script); + if (!record->has_data ()) record = &baseScriptRecords.bsearch (HB_TAG ('D','F','L','T')); + return record->has_data () ? record->get_base_script (this) : Null (BaseScript); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + baseScriptRecords.sanitize (c, this)); + } + + protected: + SortedArray16Of + baseScriptRecords; + + public: + DEFINE_SIZE_ARRAY (2, baseScriptRecords); +}; + +struct Axis +{ + bool get_baseline (hb_tag_t baseline_tag, + hb_tag_t script_tag, + hb_tag_t language_tag, + const BaseCoord **coord) const + { + const BaseScript &base_script = (this+baseScriptList).get_base_script (script_tag); + if (!base_script.has_data ()) + { + *coord = nullptr; + return false; + } + + if (likely (coord)) + { + unsigned int tag_index = 0; + if (!(this+baseTagList).bfind (baseline_tag, &tag_index)) + { + *coord = nullptr; + return false; + } + *coord = &base_script.get_base_coord (tag_index); + } + + return true; + } + + bool get_min_max (hb_tag_t script_tag, + hb_tag_t language_tag, + hb_tag_t feature_tag, + const BaseCoord **min_coord, + const BaseCoord **max_coord) const + { + const BaseScript &base_script = (this+baseScriptList).get_base_script (script_tag); + if (!base_script.has_data ()) + { + *min_coord = *max_coord = nullptr; + return false; + } + + base_script.get_min_max (language_tag).get_min_max (feature_tag, min_coord, max_coord); + + return true; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (this+baseTagList).sanitize (c) && + (this+baseScriptList).sanitize (c))); + } + + protected: + Offset16To> + baseTagList; /* Offset to BaseTagList table, from beginning + * of Axis table (may be NULL) + * Array of 4-byte baseline identification tags — must + * be in alphabetical order */ + Offset16To + baseScriptList; /* Offset to BaseScriptList table, from beginning + * of Axis table + * Array of BaseScriptRecords, in alphabetical order + * by baseScriptTag */ + + public: + DEFINE_SIZE_STATIC (4); +}; + +struct BASE +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_BASE; + + const Axis &get_axis (hb_direction_t direction) const + { return HB_DIRECTION_IS_VERTICAL (direction) ? this+vAxis : this+hAxis; } + + const VariationStore &get_var_store () const + { return version.to_int () < 0x00010001u ? Null (VariationStore) : this+varStore; } + + bool get_baseline (hb_font_t *font, + hb_tag_t baseline_tag, + hb_direction_t direction, + hb_tag_t script_tag, + hb_tag_t language_tag, + hb_position_t *base) const + { + const BaseCoord *base_coord = nullptr; + if (unlikely (!get_axis (direction).get_baseline (baseline_tag, script_tag, language_tag, &base_coord) || + !base_coord || !base_coord->has_data ())) + return false; + + if (likely (base)) + *base = base_coord->get_coord (font, get_var_store (), direction); + + return true; + } + + /* TODO: Expose this separately sometime? */ + bool get_min_max (hb_font_t *font, + hb_direction_t direction, + hb_tag_t script_tag, + hb_tag_t language_tag, + hb_tag_t feature_tag, + hb_position_t *min, + hb_position_t *max) + { + const BaseCoord *min_coord, *max_coord; + if (!get_axis (direction).get_min_max (script_tag, language_tag, feature_tag, + &min_coord, &max_coord)) + return false; + + const VariationStore &var_store = get_var_store (); + if (likely (min && min_coord)) *min = min_coord->get_coord (font, var_store, direction); + if (likely (max && max_coord)) *max = max_coord->get_coord (font, var_store, direction); + return true; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + likely (version.major == 1) && + hAxis.sanitize (c, this) && + vAxis.sanitize (c, this) && + (version.to_int () < 0x00010001u || varStore.sanitize (c, this)))); + } + + protected: + FixedVersion<>version; /* Version of the BASE table */ + Offset16TohAxis; /* Offset to horizontal Axis table, from beginning + * of BASE table (may be NULL) */ + Offset16TovAxis; /* Offset to vertical Axis table, from beginning + * of BASE table (may be NULL) */ + Offset32To + varStore; /* Offset to the table of Item Variation + * Store--from beginning of BASE + * header (may be NULL). Introduced + * in version 0x00010001. */ + public: + DEFINE_SIZE_MIN (8); +}; + + +} /* namespace OT */ + + +#endif /* HB_OT_LAYOUT_BASE_TABLE_HH */ diff --git a/gfx/harfbuzz/src/hb-ot-layout-common.hh b/gfx/harfbuzz/src/hb-ot-layout-common.hh new file mode 100644 index 0000000000..36f123b559 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-layout-common.hh @@ -0,0 +1,3734 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2010,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_LAYOUT_COMMON_HH +#define HB_OT_LAYOUT_COMMON_HH + +#include "hb.hh" +#include "hb-ot-layout.hh" +#include "hb-open-type.hh" +#include "hb-set.hh" +#include "hb-bimap.hh" + +#include "OT/Layout/Common/Coverage.hh" +#include "OT/Layout/types.hh" + +// TODO(garretrieger): cleanup these after migration. +using OT::Layout::Common::Coverage; +using OT::Layout::Common::RangeRecord; +using OT::Layout::SmallTypes; +using OT::Layout::MediumTypes; + + +namespace OT { + +template +static inline bool ClassDef_serialize (hb_serialize_context_t *c, + Iterator it); + +static bool ClassDef_remap_and_serialize ( + hb_serialize_context_t *c, + const hb_set_t &klasses, + bool use_class_zero, + hb_sorted_vector_t> &glyph_and_klass, /* IN/OUT */ + hb_map_t *klass_map /*IN/OUT*/); + +struct hb_collect_feature_substitutes_with_var_context_t +{ + const hb_map_t *axes_index_tag_map; + const hb_hashmap_t *axes_location; + hb_hashmap_t> *record_cond_idx_map; + hb_hashmap_t *feature_substitutes_map; + + // not stored in subset_plan + hb_set_t *feature_indices; + bool apply; + unsigned cur_record_idx; + hb_hashmap_t, unsigned> *conditionset_map; +}; + +struct hb_prune_langsys_context_t +{ + hb_prune_langsys_context_t (const void *table_, + hb_hashmap_t> *script_langsys_map_, + const hb_map_t *duplicate_feature_map_, + hb_set_t *new_collected_feature_indexes_) + :table (table_), + script_langsys_map (script_langsys_map_), + duplicate_feature_map (duplicate_feature_map_), + new_feature_indexes (new_collected_feature_indexes_), + script_count (0),langsys_feature_count (0) {} + + bool visitScript () + { return script_count++ < HB_MAX_SCRIPTS; } + + bool visitLangsys (unsigned feature_count) + { + langsys_feature_count += feature_count; + return langsys_feature_count < HB_MAX_LANGSYS_FEATURE_COUNT; + } + + public: + const void *table; + hb_hashmap_t> *script_langsys_map; + const hb_map_t *duplicate_feature_map; + hb_set_t *new_feature_indexes; + + private: + unsigned script_count; + unsigned langsys_feature_count; +}; + +struct hb_subset_layout_context_t : + hb_dispatch_context_t +{ + const char *get_name () { return "SUBSET_LAYOUT"; } + static return_t default_return_value () { return hb_empty_t (); } + + bool visitScript () + { + return script_count++ < HB_MAX_SCRIPTS; + } + + bool visitLangSys () + { + return langsys_count++ < HB_MAX_LANGSYS; + } + + bool visitFeatureIndex (int count) + { + feature_index_count += count; + return feature_index_count < HB_MAX_FEATURE_INDICES; + } + + bool visitLookupIndex() + { + lookup_index_count++; + return lookup_index_count < HB_MAX_LOOKUP_VISIT_COUNT; + } + + hb_subset_context_t *subset_context; + const hb_tag_t table_tag; + const hb_map_t *lookup_index_map; + const hb_hashmap_t> *script_langsys_map; + const hb_map_t *feature_index_map; + const hb_hashmap_t *feature_substitutes_map; + hb_hashmap_t> *feature_record_cond_idx_map; + + unsigned cur_script_index; + unsigned cur_feature_var_record_idx; + + hb_subset_layout_context_t (hb_subset_context_t *c_, + hb_tag_t tag_) : + subset_context (c_), + table_tag (tag_), + cur_script_index (0xFFFFu), + cur_feature_var_record_idx (0u), + script_count (0), + langsys_count (0), + feature_index_count (0), + lookup_index_count (0) + { + if (tag_ == HB_OT_TAG_GSUB) + { + lookup_index_map = &c_->plan->gsub_lookups; + script_langsys_map = &c_->plan->gsub_langsys; + feature_index_map = &c_->plan->gsub_features; + feature_substitutes_map = &c_->plan->gsub_feature_substitutes_map; + feature_record_cond_idx_map = c_->plan->user_axes_location.is_empty () ? nullptr : &c_->plan->gsub_feature_record_cond_idx_map; + } + else + { + lookup_index_map = &c_->plan->gpos_lookups; + script_langsys_map = &c_->plan->gpos_langsys; + feature_index_map = &c_->plan->gpos_features; + feature_substitutes_map = &c_->plan->gpos_feature_substitutes_map; + feature_record_cond_idx_map = c_->plan->user_axes_location.is_empty () ? nullptr : &c_->plan->gpos_feature_record_cond_idx_map; + } + } + + private: + unsigned script_count; + unsigned langsys_count; + unsigned feature_index_count; + unsigned lookup_index_count; +}; + +struct VariationStore; +struct hb_collect_variation_indices_context_t : + hb_dispatch_context_t +{ + template + return_t dispatch (const T &obj) { obj.collect_variation_indices (this); return hb_empty_t (); } + static return_t default_return_value () { return hb_empty_t (); } + + hb_set_t *layout_variation_indices; + hb_hashmap_t> *varidx_delta_map; + hb_vector_t *normalized_coords; + const VariationStore *var_store; + const hb_set_t *glyph_set; + const hb_map_t *gpos_lookups; + float *store_cache; + + hb_collect_variation_indices_context_t (hb_set_t *layout_variation_indices_, + hb_hashmap_t> *varidx_delta_map_, + hb_vector_t *normalized_coords_, + const VariationStore *var_store_, + const hb_set_t *glyph_set_, + const hb_map_t *gpos_lookups_, + float *store_cache_) : + layout_variation_indices (layout_variation_indices_), + varidx_delta_map (varidx_delta_map_), + normalized_coords (normalized_coords_), + var_store (var_store_), + glyph_set (glyph_set_), + gpos_lookups (gpos_lookups_), + store_cache (store_cache_) {} +}; + +template +struct subset_offset_array_t +{ + subset_offset_array_t (hb_subset_context_t *subset_context_, + OutputArray& out_, + const void *base_) : subset_context (subset_context_), + out (out_), base (base_) {} + + template + bool operator () (T&& offset) + { + auto snap = subset_context->serializer->snapshot (); + auto *o = out.serialize_append (subset_context->serializer); + if (unlikely (!o)) return false; + bool ret = o->serialize_subset (subset_context, offset, base); + if (!ret) + { + out.pop (); + subset_context->serializer->revert (snap); + } + return ret; + } + + private: + hb_subset_context_t *subset_context; + OutputArray &out; + const void *base; +}; + + +template +struct subset_offset_array_arg_t +{ + subset_offset_array_arg_t (hb_subset_context_t *subset_context_, + OutputArray& out_, + const void *base_, + Arg &&arg_) : subset_context (subset_context_), out (out_), + base (base_), arg (arg_) {} + + template + bool operator () (T&& offset) + { + auto snap = subset_context->serializer->snapshot (); + auto *o = out.serialize_append (subset_context->serializer); + if (unlikely (!o)) return false; + bool ret = o->serialize_subset (subset_context, offset, base, arg); + if (!ret) + { + out.pop (); + subset_context->serializer->revert (snap); + } + return ret; + } + + private: + hb_subset_context_t *subset_context; + OutputArray &out; + const void *base; + Arg &&arg; +}; + +/* + * Helper to subset an array of offsets. Subsets the thing pointed to by each offset + * and discards the offset in the array if the subset operation results in an empty + * thing. + */ +struct +{ + template + subset_offset_array_t + operator () (hb_subset_context_t *subset_context, OutputArray& out, + const void *base) const + { return subset_offset_array_t (subset_context, out, base); } + + /* Variant with one extra argument passed to serialize_subset */ + template + subset_offset_array_arg_t + operator () (hb_subset_context_t *subset_context, OutputArray& out, + const void *base, Arg &&arg) const + { return subset_offset_array_arg_t (subset_context, out, base, arg); } +} +HB_FUNCOBJ (subset_offset_array); + +template +struct subset_record_array_t +{ + subset_record_array_t (hb_subset_layout_context_t *c_, OutputArray* out_, + const void *base_) : subset_layout_context (c_), + out (out_), base (base_) {} + + template + void + operator () (T&& record) + { + auto snap = subset_layout_context->subset_context->serializer->snapshot (); + bool ret = record.subset (subset_layout_context, base); + if (!ret) subset_layout_context->subset_context->serializer->revert (snap); + else out->len++; + } + + private: + hb_subset_layout_context_t *subset_layout_context; + OutputArray *out; + const void *base; +}; + +template +struct subset_record_array_arg_t +{ + subset_record_array_arg_t (hb_subset_layout_context_t *c_, OutputArray* out_, + const void *base_, + Arg &&arg_) : subset_layout_context (c_), + out (out_), base (base_), arg (arg_) {} + + template + void + operator () (T&& record) + { + auto snap = subset_layout_context->subset_context->serializer->snapshot (); + bool ret = record.subset (subset_layout_context, base, arg); + if (!ret) subset_layout_context->subset_context->serializer->revert (snap); + else out->len++; + } + + private: + hb_subset_layout_context_t *subset_layout_context; + OutputArray *out; + const void *base; + Arg &&arg; +}; + +/* + * Helper to subset a RecordList/record array. Subsets each Record in the array and + * discards the record if the subset operation returns false. + */ +struct +{ + template + subset_record_array_t + operator () (hb_subset_layout_context_t *c, OutputArray* out, + const void *base) const + { return subset_record_array_t (c, out, base); } + + /* Variant with one extra argument passed to subset */ + template + subset_record_array_arg_t + operator () (hb_subset_layout_context_t *c, OutputArray* out, + const void *base, Arg &&arg) const + { return subset_record_array_arg_t (c, out, base, arg); } +} +HB_FUNCOBJ (subset_record_array); + + +template +struct serialize_math_record_array_t +{ + serialize_math_record_array_t (hb_serialize_context_t *serialize_context_, + OutputArray& out_, + const void *base_) : serialize_context (serialize_context_), + out (out_), base (base_) {} + + template + bool operator () (T&& record) + { + if (!serialize_context->copy (record, base)) return false; + out.len++; + return true; + } + + private: + hb_serialize_context_t *serialize_context; + OutputArray &out; + const void *base; +}; + +/* + * Helper to serialize an array of MATH records. + */ +struct +{ + template + serialize_math_record_array_t + operator () (hb_serialize_context_t *serialize_context, OutputArray& out, + const void *base) const + { return serialize_math_record_array_t (serialize_context, out, base); } + +} +HB_FUNCOBJ (serialize_math_record_array); + +/* + * + * OpenType Layout Common Table Formats + * + */ + + +/* + * Script, ScriptList, LangSys, Feature, FeatureList, Lookup, LookupList + */ + +struct IndexArray : Array16Of +{ + bool intersects (const hb_map_t *indexes) const + { return hb_any (*this, indexes); } + + template + void serialize (hb_serialize_context_t *c, + hb_subset_layout_context_t *l, + Iterator it) + { + if (!it) return; + if (unlikely (!c->extend_min ((*this)))) return; + + for (const auto _ : it) + { + if (!l->visitLookupIndex()) break; + + Index i; + i = _; + c->copy (i); + this->len++; + } + } + + unsigned int get_indexes (unsigned int start_offset, + unsigned int *_count /* IN/OUT */, + unsigned int *_indexes /* OUT */) const + { + if (_count) + { + + this->as_array ().sub_array (start_offset, _count) + | hb_sink (hb_array (_indexes, *_count)) + ; + } + return this->len; + } + + void add_indexes_to (hb_set_t* output /* OUT */) const + { + output->add_array (as_array ()); + } +}; + + +/* https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#size */ +struct FeatureParamsSize +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!c->check_struct (this))) return_trace (false); + + /* This subtable has some "history", if you will. Some earlier versions of + * Adobe tools calculated the offset of the FeatureParams subtable from the + * beginning of the FeatureList table! Now, that is dealt with in the + * Feature implementation. But we still need to be able to tell junk from + * real data. Note: We don't check that the nameID actually exists. + * + * Read Roberts wrote on 9/15/06 on opentype-list@indx.co.uk : + * + * Yes, it is correct that a new version of the AFDKO (version 2.0) will be + * coming out soon, and that the makeotf program will build a font with a + * 'size' feature that is correct by the specification. + * + * The specification for this feature tag is in the "OpenType Layout Tag + * Registry". You can see a copy of this at: + * https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#tag-size + * + * Here is one set of rules to determine if the 'size' feature is built + * correctly, or as by the older versions of MakeOTF. You may be able to do + * better. + * + * Assume that the offset to the size feature is according to specification, + * and make the following value checks. If it fails, assume the size + * feature is calculated as versions of MakeOTF before the AFDKO 2.0 built it. + * If this fails, reject the 'size' feature. The older makeOTF's calculated the + * offset from the beginning of the FeatureList table, rather than from the + * beginning of the 'size' Feature table. + * + * If "design size" == 0: + * fails check + * + * Else if ("subfamily identifier" == 0 and + * "range start" == 0 and + * "range end" == 0 and + * "range start" == 0 and + * "menu name ID" == 0) + * passes check: this is the format used when there is a design size + * specified, but there is no recommended size range. + * + * Else if ("design size" < "range start" or + * "design size" > "range end" or + * "range end" <= "range start" or + * "menu name ID" < 256 or + * "menu name ID" > 32767 or + * menu name ID is not a name ID which is actually in the name table) + * fails test + * Else + * passes test. + */ + + if (!designSize) + return_trace (false); + else if (subfamilyID == 0 && + subfamilyNameID == 0 && + rangeStart == 0 && + rangeEnd == 0) + return_trace (true); + else if (designSize < rangeStart || + designSize > rangeEnd || + subfamilyNameID < 256 || + subfamilyNameID > 32767) + return_trace (false); + else + return_trace (true); + } + + void collect_name_ids (hb_set_t *nameids_to_retain /* OUT */) const + { nameids_to_retain->add (subfamilyNameID); } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + return_trace ((bool) c->serializer->embed (*this)); + } + + HBUINT16 designSize; /* Represents the design size in 720/inch + * units (decipoints). The design size entry + * must be non-zero. When there is a design + * size but no recommended size range, the + * rest of the array will consist of zeros. */ + HBUINT16 subfamilyID; /* Has no independent meaning, but serves + * as an identifier that associates fonts + * in a subfamily. All fonts which share a + * Preferred or Font Family name and which + * differ only by size range shall have the + * same subfamily value, and no fonts which + * differ in weight or style shall have the + * same subfamily value. If this value is + * zero, the remaining fields in the array + * will be ignored. */ + NameID subfamilyNameID;/* If the preceding value is non-zero, this + * value must be set in the range 256 - 32767 + * (inclusive). It records the value of a + * field in the name table, which must + * contain English-language strings encoded + * in Windows Unicode and Macintosh Roman, + * and may contain additional strings + * localized to other scripts and languages. + * Each of these strings is the name an + * application should use, in combination + * with the family name, to represent the + * subfamily in a menu. Applications will + * choose the appropriate version based on + * their selection criteria. */ + HBUINT16 rangeStart; /* Large end of the recommended usage range + * (inclusive), stored in 720/inch units + * (decipoints). */ + HBUINT16 rangeEnd; /* Small end of the recommended usage range + (exclusive), stored in 720/inch units + * (decipoints). */ + public: + DEFINE_SIZE_STATIC (10); +}; + +/* https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#ssxx */ +struct FeatureParamsStylisticSet +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + /* Right now minorVersion is at zero. Which means, any table supports + * the uiNameID field. */ + return_trace (c->check_struct (this)); + } + + void collect_name_ids (hb_set_t *nameids_to_retain /* OUT */) const + { nameids_to_retain->add (uiNameID); } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + return_trace ((bool) c->serializer->embed (*this)); + } + + HBUINT16 version; /* (set to 0): This corresponds to a “minor” + * version number. Additional data may be + * added to the end of this Feature Parameters + * table in the future. */ + + NameID uiNameID; /* The 'name' table name ID that specifies a + * string (or strings, for multiple languages) + * for a user-interface label for this + * feature. The values of uiLabelNameId and + * sampleTextNameId are expected to be in the + * font-specific name ID range (256-32767), + * though that is not a requirement in this + * Feature Parameters specification. The + * user-interface label for the feature can + * be provided in multiple languages. An + * English string should be included as a + * fallback. The string should be kept to a + * minimal length to fit comfortably with + * different application interfaces. */ + public: + DEFINE_SIZE_STATIC (4); +}; + +/* https://docs.microsoft.com/en-us/typography/opentype/spec/features_ae#cv01-cv99 */ +struct FeatureParamsCharacterVariants +{ + unsigned + get_characters (unsigned start_offset, unsigned *char_count, hb_codepoint_t *chars) const + { + if (char_count) + { + + characters.as_array ().sub_array (start_offset, char_count) + | hb_sink (hb_array (chars, *char_count)) + ; + } + return characters.len; + } + + unsigned get_size () const + { return min_size + characters.len * HBUINT24::static_size; } + + void collect_name_ids (hb_set_t *nameids_to_retain /* OUT */) const + { + if (featUILableNameID) nameids_to_retain->add (featUILableNameID); + if (featUITooltipTextNameID) nameids_to_retain->add (featUITooltipTextNameID); + if (sampleTextNameID) nameids_to_retain->add (sampleTextNameID); + + if (!firstParamUILabelNameID || !numNamedParameters || numNamedParameters >= 0x7FFF) + return; + + unsigned last_name_id = (unsigned) firstParamUILabelNameID + (unsigned) numNamedParameters - 1; + if (last_name_id >= 256 && last_name_id <= 32767) + nameids_to_retain->add_range (firstParamUILabelNameID, last_name_id); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + return_trace ((bool) c->serializer->embed (*this)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + characters.sanitize (c)); + } + + HBUINT16 format; /* Format number is set to 0. */ + NameID featUILableNameID; /* The ‘name’ table name ID that + * specifies a string (or strings, + * for multiple languages) for a + * user-interface label for this + * feature. (May be NULL.) */ + NameID featUITooltipTextNameID;/* The ‘name’ table name ID that + * specifies a string (or strings, + * for multiple languages) that an + * application can use for tooltip + * text for this feature. (May be + * nullptr.) */ + NameID sampleTextNameID; /* The ‘name’ table name ID that + * specifies sample text that + * illustrates the effect of this + * feature. (May be NULL.) */ + HBUINT16 numNamedParameters; /* Number of named parameters. (May + * be zero.) */ + NameID firstParamUILabelNameID;/* The first ‘name’ table name ID + * used to specify strings for + * user-interface labels for the + * feature parameters. (Must be zero + * if numParameters is zero.) */ + Array16Of + characters; /* Array of the Unicode Scalar Value + * of the characters for which this + * feature provides glyph variants. + * (May be zero.) */ + public: + DEFINE_SIZE_ARRAY (14, characters); +}; + +struct FeatureParams +{ + bool sanitize (hb_sanitize_context_t *c, hb_tag_t tag) const + { +#ifdef HB_NO_LAYOUT_FEATURE_PARAMS + return true; +#endif + TRACE_SANITIZE (this); + if (tag == HB_TAG ('s','i','z','e')) + return_trace (u.size.sanitize (c)); + if ((tag & 0xFFFF0000u) == HB_TAG ('s','s','\0','\0')) /* ssXX */ + return_trace (u.stylisticSet.sanitize (c)); + if ((tag & 0xFFFF0000u) == HB_TAG ('c','v','\0','\0')) /* cvXX */ + return_trace (u.characterVariants.sanitize (c)); + return_trace (true); + } + + void collect_name_ids (hb_tag_t tag, hb_set_t *nameids_to_retain /* OUT */) const + { +#ifdef HB_NO_LAYOUT_FEATURE_PARAMS + return; +#endif + if (tag == HB_TAG ('s','i','z','e')) + return (u.size.collect_name_ids (nameids_to_retain)); + if ((tag & 0xFFFF0000u) == HB_TAG ('s','s','\0','\0')) /* ssXX */ + return (u.stylisticSet.collect_name_ids (nameids_to_retain)); + if ((tag & 0xFFFF0000u) == HB_TAG ('c','v','\0','\0')) /* cvXX */ + return (u.characterVariants.collect_name_ids (nameids_to_retain)); + } + + bool subset (hb_subset_context_t *c, const Tag* tag) const + { + TRACE_SUBSET (this); + if (!tag) return_trace (false); + if (*tag == HB_TAG ('s','i','z','e')) + return_trace (u.size.subset (c)); + if ((*tag & 0xFFFF0000u) == HB_TAG ('s','s','\0','\0')) /* ssXX */ + return_trace (u.stylisticSet.subset (c)); + if ((*tag & 0xFFFF0000u) == HB_TAG ('c','v','\0','\0')) /* cvXX */ + return_trace (u.characterVariants.subset (c)); + return_trace (false); + } + +#ifndef HB_NO_LAYOUT_FEATURE_PARAMS + const FeatureParamsSize& get_size_params (hb_tag_t tag) const + { + if (tag == HB_TAG ('s','i','z','e')) + return u.size; + return Null (FeatureParamsSize); + } + const FeatureParamsStylisticSet& get_stylistic_set_params (hb_tag_t tag) const + { + if ((tag & 0xFFFF0000u) == HB_TAG ('s','s','\0','\0')) /* ssXX */ + return u.stylisticSet; + return Null (FeatureParamsStylisticSet); + } + const FeatureParamsCharacterVariants& get_character_variants_params (hb_tag_t tag) const + { + if ((tag & 0xFFFF0000u) == HB_TAG ('c','v','\0','\0')) /* cvXX */ + return u.characterVariants; + return Null (FeatureParamsCharacterVariants); + } +#endif + + private: + union { + FeatureParamsSize size; + FeatureParamsStylisticSet stylisticSet; + FeatureParamsCharacterVariants characterVariants; + } u; + public: + DEFINE_SIZE_MIN (0); +}; + +struct Record_sanitize_closure_t { + hb_tag_t tag; + const void *list_base; +}; + +struct Feature +{ + unsigned int get_lookup_count () const + { return lookupIndex.len; } + hb_tag_t get_lookup_index (unsigned int i) const + { return lookupIndex[i]; } + unsigned int get_lookup_indexes (unsigned int start_index, + unsigned int *lookup_count /* IN/OUT */, + unsigned int *lookup_tags /* OUT */) const + { return lookupIndex.get_indexes (start_index, lookup_count, lookup_tags); } + void add_lookup_indexes_to (hb_set_t *lookup_indexes) const + { lookupIndex.add_indexes_to (lookup_indexes); } + + const FeatureParams &get_feature_params () const + { return this+featureParams; } + + bool intersects_lookup_indexes (const hb_map_t *lookup_indexes) const + { return lookupIndex.intersects (lookup_indexes); } + + void collect_name_ids (hb_tag_t tag, hb_set_t *nameids_to_retain /* OUT */) const + { + if (featureParams) + get_feature_params ().collect_name_ids (tag, nameids_to_retain); + } + + bool subset (hb_subset_context_t *c, + hb_subset_layout_context_t *l, + const Tag *tag = nullptr) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out || !c->serializer->extend_min (out))) return_trace (false); + + out->featureParams.serialize_subset (c, featureParams, this, tag); + + auto it = + + hb_iter (lookupIndex) + | hb_filter (l->lookup_index_map) + | hb_map (l->lookup_index_map) + ; + + out->lookupIndex.serialize (c->serializer, l, it); + // The decision to keep or drop this feature is already made before we get here + // so always retain it. + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c, + const Record_sanitize_closure_t *closure = nullptr) const + { + TRACE_SANITIZE (this); + if (unlikely (!(c->check_struct (this) && lookupIndex.sanitize (c)))) + return_trace (false); + + /* Some earlier versions of Adobe tools calculated the offset of the + * FeatureParams subtable from the beginning of the FeatureList table! + * + * If sanitizing "failed" for the FeatureParams subtable, try it with the + * alternative location. We would know sanitize "failed" if old value + * of the offset was non-zero, but it's zeroed now. + * + * Only do this for the 'size' feature, since at the time of the faulty + * Adobe tools, only the 'size' feature had FeatureParams defined. + */ + + if (likely (featureParams.is_null ())) + return_trace (true); + + unsigned int orig_offset = featureParams; + if (unlikely (!featureParams.sanitize (c, this, closure ? closure->tag : HB_TAG_NONE))) + return_trace (false); + + if (featureParams == 0 && closure && + closure->tag == HB_TAG ('s','i','z','e') && + closure->list_base && closure->list_base < this) + { + unsigned int new_offset_int = orig_offset - + (((char *) this) - ((char *) closure->list_base)); + + Offset16To new_offset; + /* Check that it would not overflow. */ + new_offset = new_offset_int; + if (new_offset == new_offset_int && + c->try_set (&featureParams, new_offset_int) && + !featureParams.sanitize (c, this, closure ? closure->tag : HB_TAG_NONE)) + return_trace (false); + } + + return_trace (true); + } + + Offset16To + featureParams; /* Offset to Feature Parameters table (if one + * has been defined for the feature), relative + * to the beginning of the Feature Table; = Null + * if not required */ + IndexArray lookupIndex; /* Array of LookupList indices */ + public: + DEFINE_SIZE_ARRAY_SIZED (4, lookupIndex); +}; + +template +struct Record +{ + int cmp (hb_tag_t a) const { return tag.cmp (a); } + + bool subset (hb_subset_layout_context_t *c, const void *base, const void *f_sub = nullptr) const + { + TRACE_SUBSET (this); + auto *out = c->subset_context->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (!f_sub) + return_trace (out->offset.serialize_subset (c->subset_context, offset, base, c, &tag)); + + const Feature& f = *reinterpret_cast (f_sub); + auto *s = c->subset_context->serializer; + s->push (); + + out->offset = 0; + bool ret = f.subset (c->subset_context, c, &tag); + if (ret) + s->add_link (out->offset, s->pop_pack ()); + else + s->pop_discard (); + + return_trace (ret); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + const Record_sanitize_closure_t closure = {tag, base}; + return_trace (c->check_struct (this) && offset.sanitize (c, base, &closure)); + } + + Tag tag; /* 4-byte Tag identifier */ + Offset16To + offset; /* Offset from beginning of object holding + * the Record */ + public: + DEFINE_SIZE_STATIC (6); +}; + +template +struct RecordArrayOf : SortedArray16Of> +{ + const Offset16To& get_offset (unsigned int i) const + { return (*this)[i].offset; } + Offset16To& get_offset (unsigned int i) + { return (*this)[i].offset; } + const Tag& get_tag (unsigned int i) const + { return (*this)[i].tag; } + unsigned int get_tags (unsigned int start_offset, + unsigned int *record_count /* IN/OUT */, + hb_tag_t *record_tags /* OUT */) const + { + if (record_count) + { + + this->as_array ().sub_array (start_offset, record_count) + | hb_map (&Record::tag) + | hb_sink (hb_array (record_tags, *record_count)) + ; + } + return this->len; + } + bool find_index (hb_tag_t tag, unsigned int *index) const + { + return this->bfind (tag, index, HB_NOT_FOUND_STORE, Index::NOT_FOUND_INDEX); + } +}; + +template +struct RecordListOf : RecordArrayOf +{ + const Type& operator [] (unsigned int i) const + { return this+this->get_offset (i); } + + bool subset (hb_subset_context_t *c, + hb_subset_layout_context_t *l) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + + this->iter () + | hb_apply (subset_record_array (l, out, this)) + ; + return_trace (true); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (RecordArrayOf::sanitize (c, this)); + } +}; + +struct RecordListOfFeature : RecordListOf +{ + bool subset (hb_subset_context_t *c, + hb_subset_layout_context_t *l) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out || !c->serializer->extend_min (out))) return_trace (false); + + + hb_enumerate (*this) + | hb_filter (l->feature_index_map, hb_first) + | hb_apply ([l, out, this] (const hb_pair_t&>& _) + { + const Feature *f_sub = nullptr; + const Feature **f = nullptr; + if (l->feature_substitutes_map->has (_.first, &f)) + f_sub = *f; + + subset_record_array (l, out, this, f_sub) (_.second); + }) + ; + + return_trace (true); + } +}; + +typedef RecordListOf FeatureList; + + +struct LangSys +{ + unsigned int get_feature_count () const + { return featureIndex.len; } + hb_tag_t get_feature_index (unsigned int i) const + { return featureIndex[i]; } + unsigned int get_feature_indexes (unsigned int start_offset, + unsigned int *feature_count /* IN/OUT */, + unsigned int *feature_indexes /* OUT */) const + { return featureIndex.get_indexes (start_offset, feature_count, feature_indexes); } + void add_feature_indexes_to (hb_set_t *feature_indexes) const + { featureIndex.add_indexes_to (feature_indexes); } + + bool has_required_feature () const { return reqFeatureIndex != 0xFFFFu; } + unsigned int get_required_feature_index () const + { + if (reqFeatureIndex == 0xFFFFu) + return Index::NOT_FOUND_INDEX; + return reqFeatureIndex; + } + + LangSys* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (*this)); + } + + bool compare (const LangSys& o, const hb_map_t *feature_index_map) const + { + if (reqFeatureIndex != o.reqFeatureIndex) + return false; + + auto iter = + + hb_iter (featureIndex) + | hb_filter (feature_index_map) + | hb_map (feature_index_map) + ; + + auto o_iter = + + hb_iter (o.featureIndex) + | hb_filter (feature_index_map) + | hb_map (feature_index_map) + ; + + for (; iter && o_iter; iter++, o_iter++) + { + unsigned a = *iter; + unsigned b = *o_iter; + if (a != b) return false; + } + + if (iter || o_iter) return false; + + return true; + } + + void collect_features (hb_prune_langsys_context_t *c) const + { + if (!has_required_feature () && !get_feature_count ()) return; + if (has_required_feature () && + c->duplicate_feature_map->has (reqFeatureIndex)) + c->new_feature_indexes->add (get_required_feature_index ()); + + + hb_iter (featureIndex) + | hb_filter (c->duplicate_feature_map) + | hb_sink (c->new_feature_indexes) + ; + } + + bool subset (hb_subset_context_t *c, + hb_subset_layout_context_t *l, + const Tag *tag = nullptr) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out || !c->serializer->extend_min (out))) return_trace (false); + + const uint32_t *v; + out->reqFeatureIndex = l->feature_index_map->has (reqFeatureIndex, &v) ? *v : 0xFFFFu; + + if (!l->visitFeatureIndex (featureIndex.len)) + return_trace (false); + + auto it = + + hb_iter (featureIndex) + | hb_filter (l->feature_index_map) + | hb_map (l->feature_index_map) + ; + + bool ret = bool (it); + out->featureIndex.serialize (c->serializer, l, it); + return_trace (ret); + } + + bool sanitize (hb_sanitize_context_t *c, + const Record_sanitize_closure_t * = nullptr) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && featureIndex.sanitize (c)); + } + + Offset16 lookupOrderZ; /* = Null (reserved for an offset to a + * reordering table) */ + HBUINT16 reqFeatureIndex;/* Index of a feature required for this + * language system--if no required features + * = 0xFFFFu */ + IndexArray featureIndex; /* Array of indices into the FeatureList */ + public: + DEFINE_SIZE_ARRAY_SIZED (6, featureIndex); +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, LangSys); + +struct Script +{ + unsigned int get_lang_sys_count () const + { return langSys.len; } + const Tag& get_lang_sys_tag (unsigned int i) const + { return langSys.get_tag (i); } + unsigned int get_lang_sys_tags (unsigned int start_offset, + unsigned int *lang_sys_count /* IN/OUT */, + hb_tag_t *lang_sys_tags /* OUT */) const + { return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); } + const LangSys& get_lang_sys (unsigned int i) const + { + if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys (); + return this+langSys[i].offset; + } + bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const + { return langSys.find_index (tag, index); } + + bool has_default_lang_sys () const { return defaultLangSys != 0; } + const LangSys& get_default_lang_sys () const { return this+defaultLangSys; } + + void prune_langsys (hb_prune_langsys_context_t *c, + unsigned script_index) const + { + if (!has_default_lang_sys () && !get_lang_sys_count ()) return; + if (!c->visitScript ()) return; + + if (!c->script_langsys_map->has (script_index)) + { + if (unlikely (!c->script_langsys_map->set (script_index, hb::unique_ptr {hb_set_create ()}))) + return; + } + + if (has_default_lang_sys ()) + { + //only collect features from non-redundant langsys + const LangSys& d = get_default_lang_sys (); + if (c->visitLangsys (d.get_feature_count ())) { + d.collect_features (c); + } + + for (auto _ : + hb_enumerate (langSys)) + { + const LangSys& l = this+_.second.offset; + if (!c->visitLangsys (l.get_feature_count ())) continue; + if (l.compare (d, c->duplicate_feature_map)) continue; + + l.collect_features (c); + c->script_langsys_map->get (script_index)->add (_.first); + } + } + else + { + for (auto _ : + hb_enumerate (langSys)) + { + const LangSys& l = this+_.second.offset; + if (!c->visitLangsys (l.get_feature_count ())) continue; + l.collect_features (c); + c->script_langsys_map->get (script_index)->add (_.first); + } + } + } + + bool subset (hb_subset_context_t *c, + hb_subset_layout_context_t *l, + const Tag *tag) const + { + TRACE_SUBSET (this); + if (!l->visitScript ()) return_trace (false); + if (tag && !c->plan->layout_scripts.has (*tag)) + return false; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out || !c->serializer->extend_min (out))) return_trace (false); + + bool defaultLang = false; + if (has_default_lang_sys ()) + { + c->serializer->push (); + const LangSys& ls = this+defaultLangSys; + bool ret = ls.subset (c, l); + if (!ret && tag && *tag != HB_TAG ('D', 'F', 'L', 'T')) + { + c->serializer->pop_discard (); + out->defaultLangSys = 0; + } + else + { + c->serializer->add_link (out->defaultLangSys, c->serializer->pop_pack ()); + defaultLang = true; + } + } + + const hb_set_t *active_langsys = l->script_langsys_map->get (l->cur_script_index); + if (active_langsys) + { + + hb_enumerate (langSys) + | hb_filter (active_langsys, hb_first) + | hb_map (hb_second) + | hb_filter ([=] (const Record& record) {return l->visitLangSys (); }) + | hb_apply (subset_record_array (l, &(out->langSys), this)) + ; + } + + return_trace (bool (out->langSys.len) || defaultLang || l->table_tag == HB_OT_TAG_GSUB); + } + + bool sanitize (hb_sanitize_context_t *c, + const Record_sanitize_closure_t * = nullptr) const + { + TRACE_SANITIZE (this); + return_trace (defaultLangSys.sanitize (c, this) && langSys.sanitize (c, this)); + } + + protected: + Offset16To + defaultLangSys; /* Offset to DefaultLangSys table--from + * beginning of Script table--may be Null */ + RecordArrayOf + langSys; /* Array of LangSysRecords--listed + * alphabetically by LangSysTag */ + public: + DEFINE_SIZE_ARRAY_SIZED (4, langSys); +}; + +struct RecordListOfScript : RecordListOf