diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc | 138 |
1 files changed, 98 insertions, 40 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc b/src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc index 4e506de16e..5e4cea2224 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-aat-layout.cc @@ -28,7 +28,6 @@ #include "hb.hh" #include "hb-aat-layout.hh" -#include "hb-aat-fdsc-table.hh" // Just so we compile it; unused otherwise. #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" @@ -55,9 +54,15 @@ AAT::hb_aat_apply_context_t::hb_aat_apply_context_t (const hb_ot_shape_plan_t *p face (font->face), buffer (buffer_), sanitizer (), - ankr_table (&Null(AAT::ankr)), - lookup_index (0), - debug_depth (0) + 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 ()); @@ -81,13 +86,18 @@ AAT::hb_aat_apply_context_t::set_ankr_table (const AAT::ankr *ankr_table_) * @short_description: Apple Advanced Typography Layout * @include: hb-aat.h * - * Functions for querying OpenType Layout features in the font face. + * 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) -/* Table data courtesy of Apple. Converted from mnemonics to integers +/* 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[] = { @@ -104,7 +114,7 @@ static const hb_aat_feature_mapping_t feature_mappings[] = {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_LIGATURES, HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON, HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF}, + {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}, @@ -127,6 +137,7 @@ static const hb_aat_feature_mapping_t feature_mappings[] = {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}, @@ -166,17 +177,25 @@ static const hb_aat_feature_mapping_t feature_mappings[] = {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 (const hb_aat_feature_mapping_t *) hb_bsearch (&tag, - feature_mappings, - ARRAY_LENGTH (feature_mappings), - sizeof (feature_mappings[0]), - hb_aat_feature_mapping_t::cmp); + return hb_sorted_array (feature_mappings).bsearch (tag); } #endif @@ -208,11 +227,17 @@ hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper, } -/* +/** * hb_aat_layout_has_substitution: - * @face: + * @face: #hb_face_t to work upon + * + * Tests whether the specified face includes any substitutions in the + * `morx` or `mort` tables. + * + * <note>Note: does not examine the `GSUB` table.</note> + * + * Return value: `true` if data found, `false` otherwise * - * Returns: * Since: 2.3.0 */ hb_bool_t @@ -225,14 +250,24 @@ hb_aat_layout_has_substitution (hb_face_t *face) void hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan, hb_font_t *font, - hb_buffer_t *buffer) + 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<AAT::morx> (); if (morx.has_data ()) { AAT::hb_aat_apply_context_t c (plan, font, buffer, morx_blob); - morx.apply (&c); + if (!buffer->message (font, "start table morx")) return; + morx.apply (&c, map); + (void) buffer->message (font, "end table morx"); return; } @@ -241,7 +276,9 @@ hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan, if (mort.has_data ()) { AAT::hb_aat_apply_context_t c (plan, font, buffer, mort_blob); - mort.apply (&c); + if (!buffer->message (font, "start table mort")) return; + mort.apply (&c, map); + (void) buffer->message (font, "end table mort"); return; } } @@ -266,14 +303,20 @@ is_deleted_glyph (const hb_glyph_info_t *info) void hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer) { - hb_ot_layout_delete_glyphs_inplace (buffer, is_deleted_glyph); + buffer->delete_glyphs_inplace (is_deleted_glyph); } -/* +/** * hb_aat_layout_has_positioning: - * @face: + * @face: #hb_face_t to work upon + * + * Tests whether the specified face includes any positioning information + * in the `kerx` table. + * + * <note>Note: does not examine the `GPOS` table.</note> + * + * Return value: `true` if data found, `false` otherwise * - * Returns: * Since: 2.3.0 */ hb_bool_t @@ -291,16 +334,22 @@ hb_aat_layout_position (const hb_ot_shape_plan_t *plan, const AAT::kerx& kerx = *kerx_blob->as<AAT::kerx> (); 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: + * @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 * - * Returns: * Since: 2.3.0 */ hb_bool_t @@ -322,10 +371,13 @@ hb_aat_layout_track (const hb_ot_shape_plan_t *plan, /** * hb_aat_layout_get_feature_types: - * @face: a face object - * @start_offset: iteration's start offset - * @feature_count:(inout) (allow-none): buffer size as input, filled size as output - * @features: (out caller-allocates) (array length=feature_count): features buffer + * @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. * @@ -342,10 +394,12 @@ hb_aat_layout_get_feature_types (hb_face_t *face, /** * hb_aat_layout_feature_type_get_name_id: - * @face: a face object - * @feature_type: feature 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 ID index + * Return value: Name identifier of the requested feature type * * Since: 2.2.0 */ @@ -357,19 +411,23 @@ hb_aat_layout_feature_type_get_name_id (hb_face_t *face, } /** - * hb_aat_layout_feature_type_get_selectors: - * @face: a face object - * @feature_type: feature id - * @start_offset: iteration's start offset - * @selector_count: (inout) (allow-none): buffer size as input, filled size as output - * @selectors: (out caller-allocates) (array length=selector_count): settings buffer - * @default_index: (out) (allow-none): index of default selector if any + * 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. + * Return value: Number of all available feature selectors * * Since: 2.2.0 */ |