diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-ot-font.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-ot-font.cc | 243 |
1 files changed, 216 insertions, 27 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-font.cc b/thirdparty/harfbuzz/src/hb-ot-font.cc index 9f0359a773..3f13b9994a 100644 --- a/thirdparty/harfbuzz/src/hb-ot-font.cc +++ b/thirdparty/harfbuzz/src/hb-ot-font.cc @@ -30,6 +30,7 @@ #include "hb-ot.h" +#include "hb-cache.hh" #include "hb-font.hh" #include "hb-machinery.hh" #include "hb-ot-face.hh" @@ -58,6 +59,41 @@ * never need to call these functions directly. **/ +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_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, @@ -66,7 +102,8 @@ hb_ot_get_nominal_glyph (hb_font_t *font HB_UNUSED, hb_codepoint_t *glyph, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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); } @@ -80,7 +117,8 @@ hb_ot_get_nominal_glyphs (hb_font_t *font HB_UNUSED, unsigned int glyph_stride, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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); @@ -94,7 +132,8 @@ hb_ot_get_variation_glyph (hb_font_t *font HB_UNUSED, hb_codepoint_t *glyph, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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); } @@ -107,15 +146,83 @@ hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data, unsigned advance_stride, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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; - for (unsigned int i = 0; i < count; i++) +#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_advance_cache_t *cache = nullptr; + if (use_cache) + { + retry: + cache = ot_font->advance_cache.get (); + if (unlikely (!cache)) + { + cache = (hb_advance_cache_t *) hb_malloc (sizeof (hb_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 (font->serial_coords); + } + } + out: + + if (!use_cache) { - *first_advance = font->em_scale_x (hmtx.get_advance (*first_glyph, font)); - first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); - first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + 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 () != (int) font->serial_coords) + { + ot_font->advance_cache->init (); + ot_font->cached_coords_serial.set (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 @@ -128,14 +235,43 @@ hb_ot_get_glyph_v_advances (hb_font_t* font, void* font_data, unsigned advance_stride, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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; - for (unsigned int i = 0; i < count; i++) + if (vmtx.has_data ()) { - *first_advance = font->em_scale_y (-(int) vmtx.get_advance (*first_glyph, font)); - first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); - first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); +#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 @@ -149,14 +285,26 @@ hb_ot_get_glyph_v_origin (hb_font_t *font, hb_position_t *y, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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 ()) { - *y = font->em_scale_y (VORG.get_y_origin (glyph)); + 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; } @@ -164,8 +312,18 @@ hb_ot_get_glyph_v_origin (hb_font_t *font, if (ot_face->glyf->get_extents (font, glyph, &extents)) { const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; - hb_position_t tsb = vmtx.get_side_bearing (font, glyph); - *y = extents.y_bearing + font->em_scale_y (tsb); + 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; } @@ -184,7 +342,8 @@ hb_ot_get_glyph_extents (hb_font_t *font, hb_glyph_extents_t *extents, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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; @@ -210,7 +369,9 @@ hb_ot_get_glyph_name (hb_font_t *font HB_UNUSED, char *name, unsigned int size, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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; @@ -224,7 +385,9 @@ hb_ot_get_glyph_from_name (hb_font_t *font HB_UNUSED, hb_codepoint_t *glyph, void *user_data HB_UNUSED) { - const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + 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; @@ -257,6 +420,23 @@ hb_ot_get_font_v_extents (hb_font_t *font, } #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> @@ -279,6 +459,10 @@ static struct hb_ot_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t<hb_ot 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); @@ -319,23 +503,28 @@ _hb_ot_get_font_funcs () 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 (), - &font->face->table, - nullptr); + ot_font, + _hb_ot_font_destroy); } #ifndef HB_NO_VAR -int -_glyf_get_side_bearing_var (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) +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_side_bearing_var (font, glyph, is_vertical); + return font->face->table.glyf->get_leading_bearing_with_var_unscaled (font, glyph, is_vertical, lsb); } unsigned -_glyf_get_advance_var (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) +_glyf_get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) { - return font->face->table.glyf->get_advance_var (font, glyph, is_vertical); + return font->face->table.glyf->get_advance_with_var_unscaled (font, glyph, is_vertical); } #endif |