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 | 181 |
1 files changed, 158 insertions, 23 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h b/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h index 9861f0fc7b..7e8a897cff 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-layout.h @@ -33,11 +33,12 @@ #include "hb.h" -#include "hb-ot-tag.h" +#include "hb-ot-name.h" HB_BEGIN_DECLS +#define HB_OT_TAG_BASE HB_TAG('B','A','S','E') #define HB_OT_TAG_GDEF HB_TAG('G','D','E','F') #define HB_OT_TAG_GSUB HB_TAG('G','S','U','B') #define HB_OT_TAG_GPOS HB_TAG('G','P','O','S') @@ -45,12 +46,64 @@ HB_BEGIN_DECLS /* + * Script & Language tags. + */ + +#define HB_OT_TAG_DEFAULT_SCRIPT HB_TAG ('D', 'F', 'L', 'T') +#define HB_OT_TAG_DEFAULT_LANGUAGE HB_TAG ('d', 'f', 'l', 't') + +/** + * HB_OT_MAX_TAGS_PER_SCRIPT: + * + * Since: 2.0.0 + **/ +#define HB_OT_MAX_TAGS_PER_SCRIPT 3u +/** + * HB_OT_MAX_TAGS_PER_LANGUAGE: + * + * Since: 2.0.0 + **/ +#define HB_OT_MAX_TAGS_PER_LANGUAGE 3u + +HB_EXTERN void +hb_ot_tags_from_script_and_language (hb_script_t script, + hb_language_t language, + unsigned int *script_count /* IN/OUT */, + hb_tag_t *script_tags /* OUT */, + unsigned int *language_count /* IN/OUT */, + hb_tag_t *language_tags /* OUT */); + +HB_EXTERN hb_script_t +hb_ot_tag_to_script (hb_tag_t tag); + +HB_EXTERN hb_language_t +hb_ot_tag_to_language (hb_tag_t tag); + +HB_EXTERN void +hb_ot_tags_to_script_and_language (hb_tag_t script_tag, + hb_tag_t language_tag, + hb_script_t *script /* OUT */, + hb_language_t *language /* OUT */); + + +/* * GDEF */ HB_EXTERN hb_bool_t hb_ot_layout_has_glyph_classes (hb_face_t *face); +/** + * hb_ot_layout_glyph_class_t: + * @HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED: Glyphs not matching the other classifications + * @HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH: Spacing, single characters, capable of accepting marks + * @HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE: Glyphs that represent ligation of multiple characters + * @HB_OT_LAYOUT_GLYPH_CLASS_MARK: Non-spacing, combining glyphs that represent marks + * @HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT: Spacing glyphs that represent part of a single character + * + * The GDEF classes defined for glyphs. + * + **/ typedef enum { HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED = 0, HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH = 1, @@ -110,13 +163,13 @@ hb_ot_layout_table_find_script (hb_face_t *face, hb_tag_t script_tag, unsigned int *script_index); -/* Like find_script, but takes zero-terminated array of scripts to test */ HB_EXTERN hb_bool_t -hb_ot_layout_table_choose_script (hb_face_t *face, +hb_ot_layout_table_select_script (hb_face_t *face, hb_tag_t table_tag, + unsigned int script_count, const hb_tag_t *script_tags, - unsigned int *script_index, - hb_tag_t *chosen_script); + unsigned int *script_index /* OUT */, + hb_tag_t *chosen_script /* OUT */); HB_EXTERN unsigned int hb_ot_layout_table_get_feature_tags (hb_face_t *face, @@ -134,11 +187,12 @@ hb_ot_layout_script_get_language_tags (hb_face_t *face, hb_tag_t *language_tags /* OUT */); HB_EXTERN hb_bool_t -hb_ot_layout_script_find_language (hb_face_t *face, - hb_tag_t table_tag, - unsigned int script_index, - hb_tag_t language_tag, - unsigned int *language_index); +hb_ot_layout_script_select_language (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_EXTERN hb_bool_t hb_ot_layout_language_get_required_feature_index (hb_face_t *face, @@ -193,6 +247,13 @@ HB_EXTERN unsigned int hb_ot_layout_table_get_lookup_count (hb_face_t *face, hb_tag_t table_tag); +HB_EXTERN void +hb_ot_layout_collect_features (hb_face_t *face, + hb_tag_t table_tag, + const hb_tag_t *scripts, + const hb_tag_t *languages, + const hb_tag_t *features, + hb_set_t *feature_indexes /* OUT */); HB_EXTERN void hb_ot_layout_collect_lookups (hb_face_t *face, @@ -206,10 +267,10 @@ HB_EXTERN void hb_ot_layout_lookup_collect_glyphs (hb_face_t *face, hb_tag_t table_tag, unsigned int lookup_index, - hb_set_t *glyphs_before, /* OUT. May be NULL */ - hb_set_t *glyphs_input, /* OUT. May be NULL */ - hb_set_t *glyphs_after, /* OUT. May be NULL */ - hb_set_t *glyphs_output /* OUT. May be NULL */); + hb_set_t *glyphs_before, /* OUT. May be NULL */ + hb_set_t *glyphs_input, /* OUT. May be NULL */ + hb_set_t *glyphs_after, /* OUT. May be NULL */ + hb_set_t *glyphs_output /* OUT. May be NULL */); #ifdef HB_NOT_IMPLEMENTED typedef struct @@ -272,10 +333,16 @@ hb_ot_layout_lookup_would_substitute (hb_face_t *face, HB_EXTERN void hb_ot_layout_lookup_substitute_closure (hb_face_t *face, - unsigned int lookup_index, - hb_set_t *glyphs + unsigned int lookup_index, + hb_set_t *glyphs /*TODO , hb_bool_t inclusive */); +HB_EXTERN void +hb_ot_layout_lookups_substitute_closure (hb_face_t *face, + const hb_set_t *lookups, + 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 @@ -306,14 +373,82 @@ Xhb_ot_layout_lookup_position (hb_font_t *font, #endif /* Optical 'size' feature info. Returns true if found. - * http://www.microsoft.com/typography/otspec/features_pt.htm#size */ + * https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#size */ +HB_EXTERN hb_bool_t +hb_ot_layout_get_size_params (hb_face_t *face, + unsigned int *design_size, /* OUT. May be NULL */ + unsigned int *subfamily_id, /* OUT. May be NULL */ + hb_ot_name_id_t *subfamily_name_id, /* OUT. May be NULL */ + unsigned int *range_start, /* OUT. May be NULL */ + unsigned int *range_end /* OUT. May be NULL */); + + +HB_EXTERN hb_bool_t +hb_ot_layout_feature_get_name_ids (hb_face_t *face, + hb_tag_t table_tag, + unsigned int feature_index, + hb_ot_name_id_t *label_id /* OUT. May be NULL */, + hb_ot_name_id_t *tooltip_id /* OUT. May be NULL */, + hb_ot_name_id_t *sample_id /* OUT. May be NULL */, + unsigned int *num_named_parameters /* OUT. May be NULL */, + hb_ot_name_id_t *first_param_id /* OUT. May be NULL */); + + +HB_EXTERN unsigned int +hb_ot_layout_feature_get_characters (hb_face_t *face, + hb_tag_t table_tag, + unsigned int feature_index, + unsigned int start_offset, + unsigned int *char_count /* IN/OUT. May be NULL */, + hb_codepoint_t *characters /* OUT. May be NULL */); + +/* + * BASE + */ + +/** + * hb_ot_layout_baseline_tag_t: + * @HB_OT_LAYOUT_BASELINE_TAG_ROMAN: The baseline used by alphabetic scripts such as Latin, Cyrillic and Greek. + * In vertical writing mode, the alphabetic baseline for characters rotated 90 degrees clockwise. + * (This would not apply to alphabetic characters that remain upright in vertical writing mode, since these + * characters are not rotated.) + * @HB_OT_LAYOUT_BASELINE_TAG_HANGING: The hanging baseline. In horizontal direction, this is the horizontal + * line from which syllables seem, to hang in Tibetan and other similar scripts. In vertical writing mode, + * for Tibetan (or some other similar script) characters rotated 90 degrees clockwise. + * @HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_BOTTOM_OR_LEFT: Ideographic character face bottom or left edge, + * 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_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, + * 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 + * + * Since: 2.6.0 + */ +typedef enum { + HB_OT_LAYOUT_BASELINE_TAG_ROMAN = HB_TAG ('r','o','m','n'), + 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_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_MATH = HB_TAG ('m','a','t','h'), + + _HB_OT_LAYOUT_BASELINE_TAG_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/ +} hb_ot_layout_baseline_tag_t; + HB_EXTERN hb_bool_t -hb_ot_layout_get_size_params (hb_face_t *face, - unsigned int *design_size, /* OUT. May be NULL */ - unsigned int *subfamily_id, /* OUT. May be NULL */ - unsigned int *subfamily_name_id, /* OUT. May be NULL */ - unsigned int *range_start, /* OUT. May be NULL */ - unsigned int *range_end /* OUT. May be NULL */); +hb_ot_layout_get_baseline (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. May be NULL. */); HB_END_DECLS |