Synopsis
#define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX
#define HB_OT_LAYOUT_NO_FEATURE_INDEX
#define HB_OT_LAYOUT_NO_SCRIPT_INDEX
#define HB_OT_TAG_GDEF
#define HB_OT_TAG_GPOS
#define HB_OT_TAG_GSUB
void hb_ot_layout_collect_lookups (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 *lookup_indexes);
unsigned int hb_ot_layout_feature_get_lookups (hb_face_t *face,
hb_tag_t table_tag,
unsigned int feature_index,
unsigned int start_offset,
unsigned int *lookup_count,
unsigned int *lookup_indexes);
unsigned int hb_ot_layout_get_attach_points (hb_face_t *face,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *point_count,
unsigned int *point_array);
hb_ot_layout_glyph_class_t hb_ot_layout_get_glyph_class (hb_face_t *face,
hb_codepoint_t glyph);
void hb_ot_layout_get_glyphs_in_class (hb_face_t *face,
hb_ot_layout_glyph_class_t klass,
hb_set_t *glyphs);
unsigned int hb_ot_layout_get_ligature_carets (hb_font_t *font,
hb_direction_t direction,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *caret_count,
hb_position_t *caret_array);
hb_bool_t hb_ot_layout_get_size_params (hb_face_t *face,
unsigned int *design_size,
unsigned int *subfamily_id,
unsigned int *subfamily_name_id,
unsigned int *range_start,
unsigned int *range_end);
enum hb_ot_layout_glyph_class_t;
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_bool_t hb_ot_layout_has_glyph_classes (hb_face_t *face);
hb_bool_t hb_ot_layout_has_positioning (hb_face_t *face);
hb_bool_t hb_ot_layout_has_substitution (hb_face_t *face);
hb_bool_t hb_ot_layout_language_find_feature (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
hb_tag_t feature_tag,
unsigned int *feature_index);
unsigned int hb_ot_layout_language_get_feature_indexes
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
unsigned int start_offset,
unsigned int *feature_count,
unsigned int *feature_indexes);
unsigned int hb_ot_layout_language_get_feature_tags
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
unsigned int start_offset,
unsigned int *feature_count,
hb_tag_t *feature_tags);
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);
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,
hb_set_t *glyphs_input,
hb_set_t *glyphs_after,
hb_set_t *glyphs_output);
void hb_ot_layout_lookup_substitute_closure
(hb_face_t *face,
unsigned int lookup_index,
hb_set_t *glyphs);
hb_bool_t hb_ot_layout_lookup_would_substitute
(hb_face_t *face,
unsigned int lookup_index,
const hb_codepoint_t *glyphs,
unsigned int glyphs_length,
hb_bool_t zero_context);
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);
unsigned int hb_ot_layout_script_get_language_tags
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int start_offset,
unsigned int *language_count,
hb_tag_t *language_tags);
hb_bool_t hb_ot_layout_table_choose_script (hb_face_t *face,
hb_tag_t table_tag,
const hb_tag_t *script_tags,
unsigned int *script_index,
hb_tag_t *chosen_script);
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 hb_ot_layout_table_get_feature_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int start_offset,
unsigned int *feature_count,
hb_tag_t *feature_tags);
unsigned int hb_ot_layout_table_get_script_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int start_offset,
unsigned int *script_count,
hb_tag_t *script_tags);
void hb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan,
hb_tag_t table_tag,
hb_set_t *lookup_indexes);
Details
HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX
#define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX ((unsigned int) 0xFFFF)
HB_OT_LAYOUT_NO_FEATURE_INDEX
#define HB_OT_LAYOUT_NO_FEATURE_INDEX ((unsigned int) 0xFFFF)
HB_OT_LAYOUT_NO_SCRIPT_INDEX
#define HB_OT_LAYOUT_NO_SCRIPT_INDEX ((unsigned int) 0xFFFF)
HB_OT_TAG_GDEF
#define HB_OT_TAG_GDEF HB_TAG('G','D','E','F')
HB_OT_TAG_GPOS
#define HB_OT_TAG_GPOS HB_TAG('G','P','O','S')
HB_OT_TAG_GSUB
#define HB_OT_TAG_GSUB HB_TAG('G','S','U','B')
hb_ot_layout_feature_get_lookups ()
unsigned int hb_ot_layout_feature_get_lookups (hb_face_t *face,
hb_tag_t table_tag,
unsigned int feature_index,
unsigned int start_offset,
unsigned int *lookup_count,
unsigned int *lookup_indexes);
hb_ot_layout_get_attach_points ()
unsigned int hb_ot_layout_get_attach_points (hb_face_t *face,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *point_count,
unsigned int *point_array);
hb_ot_layout_get_size_params ()
hb_bool_t hb_ot_layout_get_size_params (hb_face_t *face,
unsigned int *design_size,
unsigned int *subfamily_id,
unsigned int *subfamily_name_id,
unsigned int *range_start,
unsigned int *range_end);
enum hb_ot_layout_glyph_class_t
typedef enum {
HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED = 0,
HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH = 1,
HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE = 2,
HB_OT_LAYOUT_GLYPH_CLASS_MARK = 3,
HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT = 4
} hb_ot_layout_glyph_class_t;
HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED
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HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH
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HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE
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HB_OT_LAYOUT_GLYPH_CLASS_MARK
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HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT
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hb_ot_layout_glyph_sequence_func_t ()
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_ot_layout_has_glyph_classes ()
hb_bool_t hb_ot_layout_has_glyph_classes (hb_face_t *face);
hb_ot_layout_has_substitution ()
hb_bool_t hb_ot_layout_has_substitution (hb_face_t *face);
hb_ot_layout_language_find_feature ()
hb_bool_t hb_ot_layout_language_find_feature (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
hb_tag_t feature_tag,
unsigned int *feature_index);
hb_ot_layout_language_get_feature_indexes ()
unsigned int hb_ot_layout_language_get_feature_indexes
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
unsigned int start_offset,
unsigned int *feature_count,
unsigned int *feature_indexes);
hb_ot_layout_language_get_feature_tags ()
unsigned int hb_ot_layout_language_get_feature_tags
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
unsigned int start_offset,
unsigned int *feature_count,
hb_tag_t *feature_tags);
hb_ot_layout_language_get_required_feature_index ()
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);
hb_ot_layout_lookup_substitute_closure ()
void hb_ot_layout_lookup_substitute_closure
(hb_face_t *face,
unsigned int lookup_index,
hb_set_t *glyphs);
hb_ot_layout_lookup_would_substitute ()
hb_bool_t hb_ot_layout_lookup_would_substitute
(hb_face_t *face,
unsigned int lookup_index,
const hb_codepoint_t *glyphs,
unsigned int glyphs_length,
hb_bool_t zero_context);
hb_ot_layout_script_find_language ()
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_get_language_tags ()
unsigned int hb_ot_layout_script_get_language_tags
(hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int start_offset,
unsigned int *language_count,
hb_tag_t *language_tags);
hb_ot_layout_table_get_feature_tags ()
unsigned int hb_ot_layout_table_get_feature_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int start_offset,
unsigned int *feature_count,
hb_tag_t *feature_tags);
hb_ot_layout_table_get_script_tags ()
unsigned int hb_ot_layout_table_get_script_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int start_offset,
unsigned int *script_count,
hb_tag_t *script_tags);