diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h | 86 |
1 files changed, 77 insertions, 9 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h b/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h index 7e8a897cff..d47ba0fc92 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h @@ -24,7 +24,7 @@ * Red Hat Author(s): Behdad Esfahbod */ -#ifndef HB_OT_H_IN +#if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) #error "Include <hb-ot.h> instead." #endif @@ -38,10 +38,35 @@ HB_BEGIN_DECLS +/** + * HB_OT_TAG_BASE: + * + * OpenType [Baseline Table](https://docs.microsoft.com/en-us/typography/opentype/spec/base). + */ #define HB_OT_TAG_BASE HB_TAG('B','A','S','E') +/** + * HB_OT_TAG_GDEF: + * + * OpenType [Glyph Definition Table](https://docs.microsoft.com/en-us/typography/opentype/spec/gdef). + */ #define HB_OT_TAG_GDEF HB_TAG('G','D','E','F') +/** + * HB_OT_TAG_GSUB: + * + * OpenType [Glyph Substitution Table](https://docs.microsoft.com/en-us/typography/opentype/spec/gsub). + */ #define HB_OT_TAG_GSUB HB_TAG('G','S','U','B') +/** + * HB_OT_TAG_GPOS: + * + * OpenType [Glyph Positioning Table](https://docs.microsoft.com/en-us/typography/opentype/spec/gpos). + */ #define HB_OT_TAG_GPOS HB_TAG('G','P','O','S') +/** + * HB_OT_TAG_JSTF: + * + * OpenType [Justification Table](https://docs.microsoft.com/en-us/typography/opentype/spec/jstf). + */ #define HB_OT_TAG_JSTF HB_TAG('J','S','T','F') @@ -49,18 +74,34 @@ HB_BEGIN_DECLS * Script & Language tags. */ +/** + * HB_OT_TAG_DEFAULT_SCRIPT: + * + * OpenType script tag, `DFLT`, for features that are not script-specific. + * + */ #define HB_OT_TAG_DEFAULT_SCRIPT HB_TAG ('D', 'F', 'L', 'T') +/** + * HB_OT_TAG_DEFAULT_LANGUAGE: + * + * OpenType language tag, `dflt`. Not a valid language tag, but some fonts + * mistakenly use it. + */ #define HB_OT_TAG_DEFAULT_LANGUAGE HB_TAG ('d', 'f', 'l', 't') /** * HB_OT_MAX_TAGS_PER_SCRIPT: * + * Maximum number of OpenType tags that can correspond to a give #hb_script_t. + * * Since: 2.0.0 **/ #define HB_OT_MAX_TAGS_PER_SCRIPT 3u /** * HB_OT_MAX_TAGS_PER_LANGUAGE: * + * Maximum number of OpenType tags that can correspond to a give #hb_language_t. + * * Since: 2.0.0 **/ #define HB_OT_MAX_TAGS_PER_LANGUAGE 3u @@ -121,7 +162,6 @@ hb_ot_layout_get_glyphs_in_class (hb_face_t *face, hb_ot_layout_glyph_class_t klass, hb_set_t *glyphs /* OUT */); - /* Not that useful. Provides list of attach points for a glyph that a * client may want to cache */ HB_EXTERN unsigned int @@ -145,9 +185,29 @@ hb_ot_layout_get_ligature_carets (hb_font_t *font, * GSUB/GPOS feature query and enumeration interface */ +/** + * HB_OT_LAYOUT_NO_SCRIPT_INDEX: + * + * Special value for script index indicating unsupported script. + */ #define HB_OT_LAYOUT_NO_SCRIPT_INDEX 0xFFFFu +/** + * HB_OT_LAYOUT_NO_FEATURE_INDEX: + * + * Special value for feature index indicating unsupported feature. + */ #define HB_OT_LAYOUT_NO_FEATURE_INDEX 0xFFFFu +/** + * HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX: + * + * Special value for language index indicating default or unsupported language. + */ #define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX 0xFFFFu +/** + * HB_OT_LAYOUT_NO_VARIATIONS_INDEX: + * + * Special value for variations index indicating unsupported variation. + */ #define HB_OT_LAYOUT_NO_VARIATIONS_INDEX 0xFFFFFFFFu HB_EXTERN unsigned int @@ -161,7 +221,7 @@ HB_EXTERN hb_bool_t hb_ot_layout_table_find_script (hb_face_t *face, hb_tag_t table_tag, hb_tag_t script_tag, - unsigned int *script_index); + unsigned int *script_index /* OUT */); HB_EXTERN hb_bool_t hb_ot_layout_table_select_script (hb_face_t *face, @@ -199,15 +259,15 @@ hb_ot_layout_language_get_required_feature_index (hb_face_t *face, hb_tag_t table_tag, unsigned int script_index, unsigned int language_index, - unsigned int *feature_index); + unsigned int *feature_index /* OUT */); HB_EXTERN hb_bool_t hb_ot_layout_language_get_required_feature (hb_face_t *face, hb_tag_t table_tag, unsigned int script_index, unsigned int language_index, - unsigned int *feature_index, - hb_tag_t *feature_tag); + unsigned int *feature_index /* OUT */, + hb_tag_t *feature_tag /* OUT */); HB_EXTERN unsigned int hb_ot_layout_language_get_feature_indexes (hb_face_t *face, @@ -233,7 +293,7 @@ hb_ot_layout_language_find_feature (hb_face_t *face, unsigned int script_index, unsigned int language_index, hb_tag_t feature_tag, - unsigned int *feature_index); + unsigned int *feature_index /* OUT */); HB_EXTERN unsigned int hb_ot_layout_feature_get_lookups (hb_face_t *face, @@ -324,6 +384,14 @@ hb_ot_layout_feature_with_variations_get_lookups (hb_face_t *face, HB_EXTERN hb_bool_t hb_ot_layout_has_substitution (hb_face_t *face); +HB_EXTERN unsigned +hb_ot_layout_lookup_get_glyph_alternates (hb_face_t *face, + unsigned lookup_index, + hb_codepoint_t glyph, + unsigned start_offset, + unsigned *alternate_count /* IN/OUT */, + hb_codepoint_t *alternate_glyphs /* OUT */); + HB_EXTERN hb_bool_t hb_ot_layout_lookup_would_substitute (hb_face_t *face, unsigned int lookup_index, @@ -426,7 +494,7 @@ hb_ot_layout_feature_get_characters (hb_face_t *face, * @HB_OT_LAYOUT_BASELINE_TAG_MATH: The baseline about which mathematical characters are centered. * In vertical writing mode when mathematical characters rotated 90 degrees clockwise, are centered. * - * Baseline tags from https://docs.microsoft.com/en-us/typography/opentype/spec/baselinetags + * Baseline tags from [Baseline Tags](https://docs.microsoft.com/en-us/typography/opentype/spec/baselinetags) registry. * * Since: 2.6.0 */ @@ -439,6 +507,7 @@ typedef enum { HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_TOP_OR_RIGHT = HB_TAG ('i','d','t','p'), HB_OT_LAYOUT_BASELINE_TAG_MATH = HB_TAG ('m','a','t','h'), + /*< private >*/ _HB_OT_LAYOUT_BASELINE_TAG_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/ } hb_ot_layout_baseline_tag_t; @@ -450,7 +519,6 @@ hb_ot_layout_get_baseline (hb_font_t *font, hb_tag_t language_tag, hb_position_t *coord /* OUT. May be NULL. */); - HB_END_DECLS #endif /* HB_OT_LAYOUT_H */ |