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diff --git a/gfx/harfbuzz/src/hb-ot-font.cc b/gfx/harfbuzz/src/hb-ot-font.cc
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+/*
+ * 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-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 "hb-ot-color-cbdt-table.hh"
+#include "hb-ot-color-sbix-table.hh"
+#include "hb-ot-color-colr-table.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_advance_cache_t = hb_cache_t<24, 16, 8, true>;
+
+struct hb_ot_font_t
+{
+ const hb_ot_face_t *ot_face;
+
+ /* h_advance caching */
+ mutable hb_atomic_int_t cached_coords_serial;
+ mutable hb_atomic_ptr_t<hb_ot_font_advance_cache_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;
+
+ 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 ();
+ if (cache)
+ {
+ cache->fini ();
+ 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;
+ return ot_face->cmap->get_nominal_glyph (unicode, glyph);
+}
+
+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;
+ return ot_face->cmap->get_nominal_glyphs (count,
+ first_unicode, unicode_stride,
+ first_glyph, glyph_stride);
+}
+
+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;
+ return ot_face->cmap->get_variation_glyph (unicode, variation_selector, glyph);
+}
+
+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;
+
+#ifndef HB_NO_VAR
+ 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<hb_codepoint_t> (first_glyph, glyph_stride);
+ first_advance = &StructAtOffsetUnaligned<hb_position_t> (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<hb_codepoint_t> (first_glyph, glyph_stride);
+ first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
+ }
+ }
+
+#ifndef HB_NO_VAR
+ OT::VariationStore::destroy_cache (varStore_cache);
+#endif
+}
+
+#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;
+
+ if (vmtx.has_data ())
+ {
+#ifndef HB_NO_VAR
+ 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<hb_codepoint_t> (first_glyph, glyph_stride);
+ first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
+ }
+
+#ifndef HB_NO_VAR
+ 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<hb_codepoint_t> (first_glyph, glyph_stride);
+ first_advance = &StructAtOffsetUnaligned<hb_position_t> (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)
+ 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)
+{
+ return _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);
+}
+
+#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_get_glyph_shape (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_draw_session_t draw_session (draw_funcs, draw_data, font->slant_xy);
+ if (font->face->table.glyf->get_path (font, glyph, draw_session)) return;
+#ifndef HB_NO_CFF
+ if (font->face->table.cff1->get_path (font, glyph, draw_session)) return;
+ if (font->face->table.cff2->get_path (font, glyph, draw_session)) 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<hb_ot_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_glyph_shape_func (funcs, hb_ot_get_glyph_shape, 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);
+}
+
+#ifndef HB_NO_VAR
+bool
+_glyf_get_leading_bearing_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical,
+ int *lsb)
+{
+ return font->face->table.glyf->get_leading_bearing_with_var_unscaled (font, glyph, is_vertical, lsb);
+}
+
+unsigned
+_glyf_get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical)
+{
+ return font->face->table.glyf->get_advance_with_var_unscaled (font, glyph, is_vertical);
+}
+#endif
+
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 09:40:03 +0000