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
|
|
HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH
|
|
HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE
|
|
HB_OT_LAYOUT_GLYPH_CLASS_MARK
|
|
HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT
|
|
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
);