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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /gfx/harfbuzz/src/hb-wasm-api-font.hh | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/harfbuzz/src/hb-wasm-api-font.hh')
-rw-r--r-- | gfx/harfbuzz/src/hb-wasm-api-font.hh | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-wasm-api-font.hh b/gfx/harfbuzz/src/hb-wasm-api-font.hh new file mode 100644 index 0000000000..2d85db4aac --- /dev/null +++ b/gfx/harfbuzz/src/hb-wasm-api-font.hh @@ -0,0 +1,263 @@ +/* + * Copyright © 2023 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_WASM_API_FONT_HH +#define HB_WASM_API_FONT_HH + +#include "hb-wasm-api.hh" + +#include "hb-outline.hh" + +namespace hb { +namespace wasm { + + +HB_WASM_API (ptr_t(font_t), font_create) (HB_WASM_EXEC_ENV + ptr_d(face_t, face)) +{ + HB_REF2OBJ (face); + + hb_font_t *font = hb_font_create (face); + + HB_OBJ2REF (font); + return fontref; +} + +HB_WASM_API (ptr_t(face_t), font_get_face) (HB_WASM_EXEC_ENV + ptr_d(font_t, font)) +{ + HB_REF2OBJ (font); + + hb_face_t *face = hb_font_get_face (font); + + HB_OBJ2REF (face); + return faceref; +} + +HB_WASM_API (void, font_get_scale) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(int32_t, x_scale), + ptr_d(int32_t, y_scale)) +{ + HB_REF2OBJ (font); + + HB_PTR_PARAM(int32_t, x_scale); + HB_PTR_PARAM(int32_t, y_scale); + + hb_font_get_scale (font, x_scale, y_scale); +} + +HB_WASM_API (codepoint_t, font_get_glyph) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t unicode, + codepoint_t variation_selector) +{ + HB_REF2OBJ (font); + codepoint_t glyph; + + hb_font_get_glyph (font, unicode, variation_selector, &glyph); + return glyph; +} + +HB_WASM_API (position_t, font_get_glyph_h_advance) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph) +{ + HB_REF2OBJ (font); + return hb_font_get_glyph_h_advance (font, glyph); +} + +HB_WASM_API (position_t, font_get_glyph_v_advance) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph) +{ + HB_REF2OBJ (font); + return hb_font_get_glyph_v_advance (font, glyph); +} + +static_assert (sizeof (glyph_extents_t) == sizeof (hb_glyph_extents_t), ""); + +HB_WASM_API (bool_t, font_get_glyph_extents) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + ptr_d(glyph_extents_t, extents)) +{ + HB_REF2OBJ (font); + HB_PTR_PARAM (glyph_extents_t, extents); + if (unlikely (!extents)) + return false; + + return hb_font_get_glyph_extents (font, glyph, + (hb_glyph_extents_t *) extents); +} + +HB_WASM_API (void, font_glyph_to_string) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + char *s, uint32_t size) +{ + HB_REF2OBJ (font); + + hb_font_glyph_to_string (font, glyph, s, size); +} + +static_assert (sizeof (glyph_outline_point_t) == sizeof (hb_outline_point_t), ""); +static_assert (sizeof (uint32_t) == sizeof (hb_outline_t::contours[0]), ""); + +HB_WASM_API (bool_t, font_copy_glyph_outline) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + ptr_d(glyph_outline_t, outline)) +{ + HB_REF2OBJ (font); + HB_PTR_PARAM (glyph_outline_t, outline); + if (unlikely (!outline)) + return false; + + hb_outline_t hb_outline; + auto *funcs = hb_outline_recording_pen_get_funcs (); + + hb_font_draw_glyph (font, glyph, funcs, &hb_outline); + + if (unlikely (hb_outline.points.in_error () || + hb_outline.contours.in_error ())) + { + outline->n_points = outline->n_contours = 0; + return false; + } + + // TODO Check two buffers separately + if (hb_outline.points.length <= outline->n_points && + hb_outline.contours.length <= outline->n_contours) + { + glyph_outline_point_t *points = HB_ARRAY_APP2NATIVE (glyph_outline_point_t, outline->points, hb_outline.points.length); + uint32_t *contours = HB_ARRAY_APP2NATIVE (uint32_t, outline->contours, hb_outline.contours.length); + + if (unlikely (!points || !contours)) + { + outline->n_points = outline->n_contours = 0; + return false; + } + + hb_memcpy (points, hb_outline.points.arrayZ, hb_outline.points.get_size ()); + hb_memcpy (contours, hb_outline.contours.arrayZ, hb_outline.contours.get_size ()); + + return true; + } + + outline->n_points = hb_outline.points.length; + outline->points = wasm_runtime_module_dup_data (module_inst, + (const char *) hb_outline.points.arrayZ, + hb_outline.points.get_size ()); + outline->n_contours = hb_outline.contours.length; + outline->contours = wasm_runtime_module_dup_data (module_inst, + (const char *) hb_outline.contours.arrayZ, + hb_outline.contours.get_size ()); + + if ((outline->n_points && !outline->points) || + (!outline->n_contours && !outline->contours)) + { + outline->n_points = outline->n_contours = 0; + return false; + } + + return true; +} + +HB_WASM_API (void, glyph_outline_free) (HB_WASM_EXEC_ENV + ptr_d(glyph_outline_t, outline)) +{ + HB_PTR_PARAM (glyph_outline_t, outline); + if (unlikely (!outline)) + return; + + module_free (outline->points); + module_free (outline->contours); + + outline->n_points = 0; + outline->points = nullref; + outline->n_contours = 0; + outline->contours = nullref; +} + +HB_WASM_API (bool_t, font_copy_coords) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(coords_t, coords)) +{ + HB_REF2OBJ (font); + HB_PTR_PARAM (coords_t, coords); + if (unlikely (!coords)) + return false; + + unsigned our_length; + const int* our_coords = hb_font_get_var_coords_normalized(font, &our_length); + + if (our_length <= coords->length) { + int *their_coords = HB_ARRAY_APP2NATIVE (int, coords->coords, our_length); + if (unlikely(!their_coords)) { + coords->length = 0; + return false; + } + unsigned bytes = our_length * sizeof (int); + hb_memcpy (their_coords, our_coords, bytes); + + return true; + } + + module_free (coords->coords); + coords->length = our_length; + unsigned bytes = our_length * sizeof (int); + coords->coords = wasm_runtime_module_dup_data (module_inst, (const char *) our_coords, bytes); + if (our_length && !coords->coords) + { + coords->length = 0; + return false; + } + + return true; +} + +HB_WASM_API (bool_t, font_set_coords) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(coords_t, coords)) +{ + HB_REF2OBJ (font); + HB_PTR_PARAM (coords_t, coords); + if (unlikely (!coords)) + return false; + + unsigned length = coords->length; + unsigned bytes; + if (unlikely (hb_unsigned_mul_overflows (length, sizeof (int), &bytes))) + return false; + + const int *our_coords = (const int *) (validate_app_addr (coords->coords, bytes) ? addr_app_to_native (coords->coords) : nullptr); + hb_font_set_var_coords_normalized(font, our_coords, length); + return true; +} + + +}} + +#endif /* HB_WASM_API_FONT_HH */ |