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 | 203 |
1 files changed, 148 insertions, 55 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..386b98d580 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, @@ -195,19 +255,28 @@ hb_ot_layout_script_select_language (hb_face_t *face, unsigned int *language_index /* OUT */); HB_EXTERN hb_bool_t +hb_ot_layout_script_select_language2 (hb_face_t *face, + hb_tag_t table_tag, + unsigned int script_index, + unsigned int language_count, + const hb_tag_t *language_tags, + unsigned int *language_index /* OUT */, + hb_tag_t *chosen_language /* OUT */); + +HB_EXTERN hb_bool_t 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 +302,7 @@ 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, @@ -256,6 +325,13 @@ hb_ot_layout_collect_features (hb_face_t *face, hb_set_t *feature_indexes /* OUT */); HB_EXTERN void +hb_ot_layout_collect_features_map (hb_face_t *face, + hb_tag_t table_tag, + unsigned script_index, + unsigned language_index, + hb_map_t *feature_map /* OUT */); + +HB_EXTERN void hb_ot_layout_collect_lookups (hb_face_t *face, hb_tag_t table_tag, const hb_tag_t *scripts, @@ -272,31 +348,6 @@ hb_ot_layout_lookup_collect_glyphs (hb_face_t *face, hb_set_t *glyphs_after, /* OUT. May be NULL */ hb_set_t *glyphs_output /* OUT. May be NULL */); -#ifdef HB_NOT_IMPLEMENTED -typedef struct -{ - const hb_codepoint_t *before, - unsigned int before_length, - const hb_codepoint_t *input, - unsigned int input_length, - const hb_codepoint_t *after, - unsigned int after_length, -} hb_ot_layout_glyph_sequence_t; - -typedef hb_bool_t -(*hb_ot_layout_glyph_sequence_func_t) (hb_font_t *font, - hb_tag_t table_tag, - unsigned int lookup_index, - const hb_ot_layout_glyph_sequence_t *sequence, - void *user_data); - -HB_EXTERN void -Xhb_ot_layout_lookup_enumerate_sequences (hb_face_t *face, - hb_tag_t table_tag, - unsigned int lookup_index, - hb_ot_layout_glyph_sequence_func_t callback, - void *user_data); -#endif /* Variations support */ @@ -324,6 +375,14 @@ 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, @@ -343,19 +402,6 @@ hb_ot_layout_lookups_substitute_closure (hb_face_t *face, hb_set_t *glyphs); -#ifdef HB_NOT_IMPLEMENTED -/* Note: You better have GDEF when using this API, or marks won't do much. */ -HB_EXTERN hb_bool_t -Xhb_ot_layout_lookup_substitute (hb_font_t *font, - unsigned int lookup_index, - const hb_ot_layout_glyph_sequence_t *sequence, - unsigned int out_size, - hb_codepoint_t *glyphs_out, /* OUT */ - unsigned int *clusters_out, /* OUT */ - unsigned int *out_length /* OUT */); -#endif - - /* * GPOS */ @@ -363,15 +409,6 @@ Xhb_ot_layout_lookup_substitute (hb_font_t *font, HB_EXTERN hb_bool_t hb_ot_layout_has_positioning (hb_face_t *face); -#ifdef HB_NOT_IMPLEMENTED -/* Note: You better have GDEF when using this API, or marks won't do much. */ -HB_EXTERN hb_bool_t -Xhb_ot_layout_lookup_position (hb_font_t *font, - unsigned int lookup_index, - const hb_ot_layout_glyph_sequence_t *sequence, - hb_glyph_position_t *positions /* IN / OUT */); -#endif - /* Optical 'size' feature info. Returns true if found. * https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#size */ HB_EXTERN hb_bool_t @@ -382,6 +419,16 @@ hb_ot_layout_get_size_params (hb_face_t *face, unsigned int *range_start, /* OUT. May be NULL */ unsigned int *range_end /* OUT. May be NULL */); +HB_EXTERN hb_position_t +hb_ot_layout_lookup_get_optical_bound (hb_font_t *font, + unsigned lookup_index, + hb_direction_t direction, + hb_codepoint_t glyph); + + +/* + * GSUB/GPOS + */ HB_EXTERN hb_bool_t hb_ot_layout_feature_get_name_ids (hb_face_t *face, @@ -402,10 +449,25 @@ hb_ot_layout_feature_get_characters (hb_face_t *face, unsigned int *char_count /* IN/OUT. May be NULL */, hb_codepoint_t *characters /* OUT. May be NULL */); + /* * BASE */ +HB_EXTERN hb_bool_t +hb_ot_layout_get_font_extents (hb_font_t *font, + hb_direction_t direction, + hb_tag_t script_tag, + hb_tag_t language_tag, + hb_font_extents_t *extents); + +HB_EXTERN hb_bool_t +hb_ot_layout_get_font_extents2 (hb_font_t *font, + hb_direction_t direction, + hb_script_t script, + hb_language_t language, + hb_font_extents_t *extents); + /** * hb_ot_layout_baseline_tag_t: * @HB_OT_LAYOUT_BASELINE_TAG_ROMAN: The baseline used by alphabetic scripts such as Latin, Cyrillic and Greek. @@ -419,14 +481,16 @@ hb_ot_layout_feature_get_characters (hb_face_t *face, * if the direction is horizontal or vertical, respectively. * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_TOP_OR_RIGHT: Ideographic character face top or right edge, * if the direction is horizontal or vertical, respectively. + * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL: The center of the ideographic character face. Since: 4.0.0 * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_BOTTOM_OR_LEFT: Ideographic em-box bottom or left edge, * if the direction is horizontal or vertical, respectively. * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_TOP_OR_RIGHT: Ideographic em-box top or right edge baseline, + * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL: The center of the ideographic em-box. Since: 4.0.0 * if the direction is horizontal or vertical, respectively. * @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 */ @@ -435,13 +499,19 @@ typedef enum { HB_OT_LAYOUT_BASELINE_TAG_HANGING = HB_TAG ('h','a','n','g'), HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_BOTTOM_OR_LEFT = HB_TAG ('i','c','f','b'), HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_TOP_OR_RIGHT = HB_TAG ('i','c','f','t'), + HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL = HB_TAG ('I','c','f','c'), HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_BOTTOM_OR_LEFT = HB_TAG ('i','d','e','o'), HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_TOP_OR_RIGHT = HB_TAG ('i','d','t','p'), + HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL = HB_TAG ('I','d','c','e'), 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; +HB_EXTERN hb_ot_layout_baseline_tag_t +hb_ot_layout_get_horizontal_baseline_tag_for_script (hb_script_t script); + HB_EXTERN hb_bool_t hb_ot_layout_get_baseline (hb_font_t *font, hb_ot_layout_baseline_tag_t baseline_tag, @@ -450,6 +520,29 @@ hb_ot_layout_get_baseline (hb_font_t *font, hb_tag_t language_tag, hb_position_t *coord /* OUT. May be NULL. */); +HB_EXTERN hb_bool_t +hb_ot_layout_get_baseline2 (hb_font_t *font, + hb_ot_layout_baseline_tag_t baseline_tag, + hb_direction_t direction, + hb_script_t script, + hb_language_t language, + hb_position_t *coord /* OUT. May be NULL. */); + +HB_EXTERN void +hb_ot_layout_get_baseline_with_fallback (hb_font_t *font, + hb_ot_layout_baseline_tag_t baseline_tag, + hb_direction_t direction, + hb_tag_t script_tag, + hb_tag_t language_tag, + hb_position_t *coord /* OUT */); + +HB_EXTERN void +hb_ot_layout_get_baseline_with_fallback2 (hb_font_t *font, + hb_ot_layout_baseline_tag_t baseline_tag, + hb_direction_t direction, + hb_script_t script, + hb_language_t language, + hb_position_t *coord /* OUT */); HB_END_DECLS |