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| #define | HB_OT_TAG_MATH | 
| #define | HB_OT_MATH_SCRIPT | 
| enum | hb_ot_math_constant_t | 
| enum | hb_ot_math_kern_t | 
| hb_ot_math_glyph_variant_t | |
| enum | hb_ot_math_glyph_part_flags_t | 
| hb_ot_math_glyph_part_t | 
GBoxed ├── hb_ot_math_glyph_part_t ╰── hb_ot_math_glyph_variant_t GEnum ├── hb_ot_math_constant_t ╰── hb_ot_math_kern_t GFlags ╰── hb_ot_math_glyph_part_flags_t
hb_bool_t
hb_ot_math_has_data (hb_face_t *face);
This function allows to verify the presence of an OpenType MATH table on the face.
Since: 1.3.3
hb_position_t hb_ot_math_get_constant (hb_font_t *font,hb_ot_math_constant_t constant);
This function returns the requested math constants as a hb_position_t. If the request constant is HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN, HB_OT_MATH_CONSTANT_SCRIPT_SCRIPT_PERCENT_SCALE_DOWN or HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN then the return value is actually an integer between 0 and 100 representing that percentage.
| font | hb_font_t from which to retrieve the value | |
| constant | hb_ot_math_constant_t the constant to retrieve | 
Since: 1.3.3
hb_position_t hb_ot_math_get_glyph_italics_correction (hb_font_t *font,hb_codepoint_t glyph);
| font | hb_font_t from which to retrieve the value | |
| glyph | glyph index from which to retrieve the value | 
Since: 1.3.3
hb_position_t hb_ot_math_get_glyph_top_accent_attachment (hb_font_t *font,hb_codepoint_t glyph);
| font | hb_font_t from which to retrieve the value | |
| glyph | glyph index from which to retrieve the value | 
Since: 1.3.3
hb_position_t hb_ot_math_get_glyph_kerning (hb_font_t *font,hb_codepoint_t glyph,hb_ot_math_kern_t kern,hb_position_t correction_height);
This function tries to retrieve the MathKern table for the specified font, glyph and hb_ot_math_kern_t. Then it browses the list of heights from the MathKern table to find one value that is greater or equal to specified correction_height. If one is found the corresponding value from the list of kerns is returned and otherwise the last kern value is returned.
| font | hb_font_t from which to retrieve the value | |
| glyph | glyph index from which to retrieve the value | |
| kern | the hb_ot_math_kern_t from which to retrieve the value | |
| correction_height | the correction height to use to determine the kerning. | 
Since: 1.3.3
hb_bool_t hb_ot_math_is_glyph_extended_shape (hb_face_t *face,hb_codepoint_t glyph);
Since: 1.3.3
unsigned int hb_ot_math_get_glyph_variants (hb_font_t *font,hb_codepoint_t glyph,hb_direction_t direction,unsigned int start_offset,unsigned int *variants_count,hb_ot_math_glyph_variant_t *variants);
This function tries to retrieve the MathGlyphConstruction for the specified font, glyph and direction. Note that only the value of HB_DIRECTION_IS_HORIZONTAL is considered. It provides the corresponding list of size variants as an array of hb_ot_math_glyph_variant_t structs.
| font | hb_font_t from which to retrieve the values | |
| glyph | index of the glyph to stretch | |
| direction | direction of the stretching | |
| start_offset | offset of the first variant to retrieve | |
| variants_count | maximum number of variants to retrieve after start_offset (IN) and actual number of variants retrieved (OUT) | |
| variants | array of size at least  | 
Since: 1.3.3
hb_position_t hb_ot_math_get_min_connector_overlap (hb_font_t *font,hb_direction_t direction);
This function tries to retrieve the MathVariants table for the specified font and returns the minimum overlap of connecting glyphs to draw a glyph assembly in the specified direction. Note that only the value of HB_DIRECTION_IS_HORIZONTAL is considered.
Since: 1.3.3
unsigned int hb_ot_math_get_glyph_assembly (hb_font_t *font,hb_codepoint_t glyph,hb_direction_t direction,unsigned int start_offset,unsigned int *parts_count,hb_ot_math_glyph_part_t *parts,hb_position_t *italics_correction);
This function tries to retrieve the GlyphAssembly for the specified font, glyph and direction. Note that only the value of HB_DIRECTION_IS_HORIZONTAL is considered. It provides the information necessary to draw the glyph assembly as an array of hb_ot_math_glyph_part_t.
| font | hb_font_t from which to retrieve the values | |
| glyph | index of the glyph to stretch | |
| direction | direction of the stretching | |
| start_offset | offset of the first glyph part to retrieve | |
| parts_count | maximum number of glyph parts to retrieve after start_offset (IN) and actual number of parts retrieved (OUT) | |
| parts | array of size at least  | |
| italics_correction | italic correction of the glyph assembly | 
Since: 1.3.3
Since: 1.3.3
typedef struct {
  hb_codepoint_t glyph;
  hb_position_t advance;
} hb_ot_math_glyph_variant_t;
Since: 1.3.3
typedef struct {
  hb_codepoint_t glyph;
  hb_position_t start_connector_length;
  hb_position_t end_connector_length;
  hb_position_t full_advance;
  hb_ot_math_glyph_part_flags_t flags;
} hb_ot_math_glyph_part_t;
Since: 1.3.3