diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc | 151 |
1 files changed, 102 insertions, 49 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc index ddd6662e84..2f28b5620d 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc @@ -70,7 +70,7 @@ hb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, hb_ot_map_builder_t *map = &planner->map; map->add_global_bool_feature (HB_TAG('r','v','r','n')); - map->add_gsub_pause (NULL); + map->add_gsub_pause (nullptr); switch (props->direction) { case HB_DIRECTION_LTR: @@ -108,7 +108,7 @@ hb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, /* We really want to find a 'vert' feature if there's any in the font, no * matter which script/langsys it is listed (or not) under. * See various bugs referenced from: - * https://github.com/behdad/harfbuzz/issues/63 */ + * https://github.com/harfbuzz/harfbuzz/issues/63 */ map->add_feature (HB_TAG ('v','e','r','t'), 1, F_GLOBAL | F_GLOBAL_SEARCH); } @@ -128,6 +128,8 @@ hb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, * shaper face data */ +HB_SHAPER_DATA_ENSURE_DEFINE(ot, face) + hb_ot_shaper_face_data_t * _hb_ot_shaper_face_data_create (hb_face_t *face) { @@ -145,6 +147,8 @@ _hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data) * shaper font data */ +HB_SHAPER_DATA_ENSURE_DEFINE(ot, font) + struct hb_ot_shaper_font_data_t {}; hb_ot_shaper_font_data_t * @@ -172,7 +176,7 @@ _hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan, { hb_ot_shape_plan_t *plan = (hb_ot_shape_plan_t *) calloc (1, sizeof (hb_ot_shape_plan_t)); if (unlikely (!plan)) - return NULL; + return nullptr; hb_ot_shape_planner_t planner (shape_plan); @@ -186,7 +190,7 @@ _hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan, if (plan->shaper->data_create) { plan->data = plan->shaper->data_create (plan); if (unlikely (!plan->data)) - return NULL; + return nullptr; } return plan; @@ -271,8 +275,7 @@ hb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font) static void hb_form_clusters (hb_buffer_t *buffer) { - if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII) || - buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES) + if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII)) return; /* Loop duplicated in hb_ensure_native_direction(), and in _hb-coretext.cc */ @@ -284,11 +287,17 @@ hb_form_clusters (hb_buffer_t *buffer) if (likely (!HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&info[i])) && !_hb_glyph_info_is_joiner (&info[i]))) { - buffer->merge_clusters (base, i); + if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES) + buffer->merge_clusters (base, i); + else + buffer->unsafe_to_break (base, i); base = i; } } - buffer->merge_clusters (base, count); + if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES) + buffer->merge_clusters (base, count); + else + buffer->unsafe_to_break (base, count); } static void @@ -362,7 +371,18 @@ hb_ot_shape_setup_masks_fraction (hb_ot_shape_context_t *c) hb_buffer_t *buffer = c->buffer; - /* TODO look in pre/post context text also. */ + hb_mask_t pre_mask, post_mask; + if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) + { + pre_mask = c->plan->numr_mask | c->plan->frac_mask; + post_mask = c->plan->frac_mask | c->plan->dnom_mask; + } + else + { + pre_mask = c->plan->frac_mask | c->plan->dnom_mask; + post_mask = c->plan->numr_mask | c->plan->frac_mask; + } + unsigned int count = buffer->len; hb_glyph_info_t *info = buffer->info; for (unsigned int i = 0; i < count; i++) @@ -379,11 +399,13 @@ hb_ot_shape_setup_masks_fraction (hb_ot_shape_context_t *c) HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER) end++; + buffer->unsafe_to_break (start, end); + for (unsigned int j = start; j < i; j++) - info[j].mask |= c->plan->numr_mask | c->plan->frac_mask; + info[j].mask |= pre_mask; info[i].mask |= c->plan->frac_mask; for (unsigned int j = i + 1; j < end; j++) - info[j].mask |= c->plan->frac_mask | c->plan->dnom_mask; + info[j].mask |= post_mask; i = end - 1; } @@ -494,9 +516,10 @@ hb_ot_hide_default_ignorables (hb_ot_shape_context_t *c) /* 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--) - info[k - 1].cluster = cluster; + buffer->set_cluster (info[k - 1], cluster, mask); } continue; } @@ -562,8 +585,6 @@ hb_ot_substitute_default (hb_ot_shape_context_t *c) { hb_buffer_t *buffer = c->buffer; - hb_ot_shape_initialize_masks (c); - hb_ot_mirror_chars (c); HB_BUFFER_ALLOCATE_VAR (buffer, glyph_index); @@ -672,9 +693,9 @@ hb_ot_position_default (hb_ot_shape_context_t *c) static inline void hb_ot_position_complex (hb_ot_shape_context_t *c) { - hb_ot_layout_position_start (c->font, c->buffer); - unsigned int count = c->buffer->len; + hb_glyph_info_t *info = c->buffer->info; + hb_glyph_position_t *pos = c->buffer->pos; /* If the font has no GPOS, AND, no fallback positioning will * happen, AND, direction is forward, then when zeroing mark @@ -689,6 +710,17 @@ hb_ot_position_complex (hb_ot_shape_context_t *c) !c->plan->shaper->fallback_position && HB_DIRECTION_IS_FORWARD (c->buffer->props.direction); + /* We change glyph origin to what GPOS expects (horizontal), apply GPOS, change it back. */ + + /* The nil glyph_h_origin() func returns 0, so no need to apply it. */ + if (c->font->has_glyph_h_origin_func ()) + for (unsigned int i = 0; i < count; i++) + c->font->add_glyph_h_origin (info[i].codepoint, + &pos[i].x_offset, + &pos[i].y_offset); + + hb_ot_layout_position_start (c->font, c->buffer); + switch (c->plan->shaper->zero_width_marks) { case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY: @@ -702,30 +734,8 @@ hb_ot_position_complex (hb_ot_shape_context_t *c) } if (likely (!c->fallback_positioning)) - { - hb_glyph_info_t *info = c->buffer->info; - hb_glyph_position_t *pos = c->buffer->pos; - - /* Change glyph origin to what GPOS expects (horizontal), apply GPOS, change it back. */ - - /* The nil glyph_h_origin() func returns 0, so no need to apply it. */ - if (c->font->has_glyph_h_origin_func ()) - for (unsigned int i = 0; i < count; i++) - c->font->add_glyph_h_origin (info[i].codepoint, - &pos[i].x_offset, - &pos[i].y_offset); - c->plan->position (c->font, c->buffer); - /* The nil glyph_h_origin() func returns 0, so no need to apply it. */ - if (c->font->has_glyph_h_origin_func ()) - for (unsigned int i = 0; i < count; i++) - c->font->subtract_glyph_h_origin (info[i].codepoint, - &pos[i].x_offset, - &pos[i].y_offset); - - } - switch (c->plan->shaper->zero_width_marks) { case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE: @@ -742,6 +752,13 @@ hb_ot_position_complex (hb_ot_shape_context_t *c) hb_ot_layout_position_finish_advances (c->font, c->buffer); hb_ot_zero_width_default_ignorables (c); hb_ot_layout_position_finish_offsets (c->font, c->buffer); + + /* The nil glyph_h_origin() func returns 0, so no need to apply it. */ + if (c->font->has_glyph_h_origin_func ()) + for (unsigned int i = 0; i < count; i++) + c->font->subtract_glyph_h_origin (info[i].codepoint, + &pos[i].x_offset, + &pos[i].y_offset); } static inline void @@ -767,6 +784,31 @@ hb_ot_position (hb_ot_shape_context_t *c) _hb_buffer_deallocate_gsubgpos_vars (c->buffer); } +static inline void +hb_propagate_flags (hb_buffer_t *buffer) +{ + /* Propagate cluster-level glyph flags to be the same on all cluster glyphs. + * Simplifies using them. */ + + if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_UNSAFE_TO_BREAK)) + return; + + hb_glyph_info_t *info = buffer->info; + + foreach_cluster (buffer, start, end) + { + unsigned int mask = 0; + for (unsigned int i = start; i < end; i++) + if (info[i].mask & HB_GLYPH_FLAG_UNSAFE_TO_BREAK) + { + mask = HB_GLYPH_FLAG_UNSAFE_TO_BREAK; + break; + } + if (mask) + for (unsigned int i = start; i < end; i++) + info[i].mask |= mask; + } +} /* Pull it all together! */ @@ -775,11 +817,16 @@ hb_ot_shape_internal (hb_ot_shape_context_t *c) { c->buffer->deallocate_var_all (); c->buffer->scratch_flags = HB_BUFFER_SCRATCH_FLAG_DEFAULT; - if (likely (!_hb_unsigned_int_mul_overflows (c->buffer->len, HB_BUFFER_MAX_EXPANSION_FACTOR))) + if (likely (!_hb_unsigned_int_mul_overflows (c->buffer->len, HB_BUFFER_MAX_LEN_FACTOR))) { - c->buffer->max_len = MAX (c->buffer->len * HB_BUFFER_MAX_EXPANSION_FACTOR, + c->buffer->max_len = MAX (c->buffer->len * HB_BUFFER_MAX_LEN_FACTOR, (unsigned) HB_BUFFER_MAX_LEN_MIN); } + if (likely (!_hb_unsigned_int_mul_overflows (c->buffer->len, HB_BUFFER_MAX_OPS_FACTOR))) + { + c->buffer->max_ops = MAX (c->buffer->len * HB_BUFFER_MAX_OPS_FACTOR, + (unsigned) HB_BUFFER_MAX_OPS_MIN); + } bool disable_otl = c->plan->shaper->disable_otl && c->plan->shaper->disable_otl (c->plan); //c->fallback_substitute = disable_otl || !hb_ot_layout_has_substitution (c->face); @@ -793,8 +840,10 @@ hb_ot_shape_internal (hb_ot_shape_context_t *c) c->buffer->clear_output (); + hb_ot_shape_initialize_masks (c); hb_set_unicode_props (c->buffer); hb_insert_dotted_circle (c->buffer, c->font); + hb_form_clusters (c->buffer); hb_ensure_native_direction (c->buffer); @@ -810,11 +859,14 @@ hb_ot_shape_internal (hb_ot_shape_context_t *c) if (c->plan->shaper->postprocess_glyphs) c->plan->shaper->postprocess_glyphs (c->plan, c->buffer, c->font); + hb_propagate_flags (c->buffer); + _hb_buffer_deallocate_unicode_vars (c->buffer); c->buffer->props.direction = c->target_direction; c->buffer->max_len = HB_BUFFER_MAX_LEN_DEFAULT; + c->buffer->max_ops = HB_BUFFER_MAX_OPS_DEFAULT; c->buffer->deallocate_var_all (); } @@ -882,7 +934,7 @@ hb_ot_shape_glyphs_closure (hb_font_t *font, { hb_ot_shape_plan_t plan; - const char *shapers[] = {"ot", NULL}; + const char *shapers[] = {"ot", nullptr}; hb_shape_plan_t *shape_plan = hb_shape_plan_create_cached (font->face, &buffer->props, features, num_features, shapers); @@ -893,18 +945,19 @@ hb_ot_shape_glyphs_closure (hb_font_t *font, for (unsigned int i = 0; i < count; i++) add_char (font, buffer->unicode, mirror, info[i].codepoint, glyphs); - hb_set_t lookups; - lookups.init (); - hb_ot_shape_plan_collect_lookups (shape_plan, HB_OT_TAG_GSUB, &lookups); + hb_set_t *lookups = hb_set_create (); + hb_ot_shape_plan_collect_lookups (shape_plan, HB_OT_TAG_GSUB, lookups); /* And find transitive closure. */ - hb_set_t copy; - copy.init (); + hb_set_t *copy = hb_set_create (); do { - copy.set (glyphs); - for (hb_codepoint_t lookup_index = -1; hb_set_next (&lookups, &lookup_index);) + copy->set (glyphs); + for (hb_codepoint_t lookup_index = -1; hb_set_next (lookups, &lookup_index);) hb_ot_layout_lookup_substitute_closure (font->face, lookup_index, glyphs); - } while (!copy.is_equal (glyphs)); + } while (!copy->is_equal (glyphs)); + hb_set_destroy (copy); + + hb_set_destroy (lookups); hb_shape_plan_destroy (shape_plan); } |