#include "hb.hh"#include "hb-ot-var.h"#include "hb-ot-var-avar-table.hh"#include "hb-ot-var-fvar-table.hh"#include "hb-ot-var-mvar-table.hh"
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Function Documentation
◆ hb_ot_var_find_axis()
| hb_bool_t hb_ot_var_find_axis | ( | hb_face_t * | face, |
| hb_tag_t | axis_tag, | ||
| unsigned int * | axis_index, | ||
| hb_ot_var_axis_t * | axis_info | ||
| ) |
hb_ot_var_find_axis: @face: hb_face_t to work upon @axis_tag: The hb_tag_t of the variation axis to query @axis_index: The index of the variation axis @axis_info: (out): The hb_ot_var_axis_info_t of the axis tag queried
Fetches the variation-axis information corresponding to the specified axis tag in the specified face.
Since: 1.4.2 Deprecated: 2.2.0 - use hb_ot_var_find_axis_info() instead
Definition at line 123 of file hb-ot-var.cc.
◆ hb_ot_var_find_axis_info()
| HB_EXTERN hb_bool_t hb_ot_var_find_axis_info | ( | hb_face_t * | face, |
| hb_tag_t | axis_tag, | ||
| hb_ot_var_axis_info_t * | axis_info | ||
| ) |
hb_ot_var_find_axis_info: @face: hb_face_t to work upon @axis_tag: The hb_tag_t of the variation axis to query @axis_info: (out): The hb_ot_var_axis_info_t of the axis tag queried
Fetches the variation-axis information corresponding to the specified axis tag in the specified face.
Return value: true if data found, false otherwise
Since: 2.2.0
Definition at line 170 of file hb-ot-var.cc.
◆ hb_ot_var_get_axes()
| unsigned int hb_ot_var_get_axes | ( | hb_face_t * | face, |
| unsigned int | start_offset, | ||
| unsigned int * | axes_count, | ||
| hb_ot_var_axis_t * | axes_array | ||
| ) |
hb_ot_var_get_axes: @face: hb_face_t to work upon @start_offset: offset of the first lookup to retrieve @axes_count: (inout) (optional): Input = the maximum number of variation axes to return; Output = the actual number of variation axes returned (may be zero) @axes_array: (out caller-allocates) (array length=axes_count): The array of variation axes found
Fetches a list of all variation axes in the specified face. The list returned will begin at the offset provided.
Since: 1.4.2 Deprecated: 2.2.0: use hb_ot_var_get_axis_infos() instead
Definition at line 101 of file hb-ot-var.cc.
◆ hb_ot_var_get_axis_count()
| unsigned int hb_ot_var_get_axis_count | ( | hb_face_t * | face | ) |
hb_ot_var_get_axis_count: @face: The hb_face_t to work on
Fetches the number of OpenType variation axes included in the face.
Return value: the number of variation axes defined
Since: 1.4.2
Definition at line 80 of file hb-ot-var.cc.
◆ hb_ot_var_get_axis_infos()
| HB_EXTERN unsigned int hb_ot_var_get_axis_infos | ( | hb_face_t * | face, |
| unsigned int | start_offset, | ||
| unsigned int * | axes_count, | ||
| hb_ot_var_axis_info_t * | axes_array | ||
| ) |
hb_ot_var_get_axis_infos: @face: hb_face_t to work upon @start_offset: offset of the first lookup to retrieve @axes_count: (inout) (optional): Input = the maximum number of variation axes to return; Output = the actual number of variation axes returned (may be zero) @axes_array: (out caller-allocates) (array length=axes_count): The array of variation axes found
Fetches a list of all variation axes in the specified face. The list returned will begin at the offset provided.
Return value: the number of variation axes in the face
Since: 2.2.0
Definition at line 148 of file hb-ot-var.cc.
◆ hb_ot_var_get_named_instance_count()
| unsigned int hb_ot_var_get_named_instance_count | ( | hb_face_t * | face | ) |
hb_ot_var_get_named_instance_count: @face: The hb_face_t to work on
Fetches the number of named instances included in the face.
Return value: the number of named instances defined
Since: 2.2.0
Definition at line 193 of file hb-ot-var.cc.
◆ hb_ot_var_has_data()
SECTION:hb-ot-var @title: hb-ot-var @short_description: OpenType Font Variations hb-ot.h
Functions for fetching information about OpenType Variable Fonts. hb_ot_var_has_data: @face: The hb_face_t to work on
Tests whether a face includes any OpenType variation data in the fvar table.
Return value: true if data found, false otherwise
Since: 1.4.2
Definition at line 64 of file hb-ot-var.cc.
◆ hb_ot_var_named_instance_get_design_coords()
| unsigned int hb_ot_var_named_instance_get_design_coords | ( | hb_face_t * | face, |
| unsigned int | instance_index, | ||
| unsigned int * | coords_length, | ||
| float * | coords | ||
| ) |
hb_ot_var_named_instance_get_design_coords: @face: The hb_face_t to work on @instance_index: The index of the named instance to query @coords_length: (inout) (optional): Input = the maximum number of coordinates to return; Output = the actual number of coordinates returned (may be zero) @coords: (out) (array length=coords_length): The array of coordinates found for the query
Fetches the design-space coordinates corresponding to the given named instance in the face.
Return value: the number of variation axes in the face
Since: 2.2.0
Definition at line 252 of file hb-ot-var.cc.
◆ hb_ot_var_named_instance_get_postscript_name_id()
| hb_ot_name_id_t hb_ot_var_named_instance_get_postscript_name_id | ( | hb_face_t * | face, |
| unsigned int | instance_index | ||
| ) |
hb_ot_var_named_instance_get_postscript_name_id: @face: The hb_face_t to work on @instance_index: The index of the named instance to query
Fetches the name table Name ID that provides display names for the "PostScript name" defined for the given named instance in the face.
Return value: the Name ID found for the PostScript name
Since: 2.2.0
Definition at line 230 of file hb-ot-var.cc.
◆ hb_ot_var_named_instance_get_subfamily_name_id()
| hb_ot_name_id_t hb_ot_var_named_instance_get_subfamily_name_id | ( | hb_face_t * | face, |
| unsigned int | instance_index | ||
| ) |
hb_ot_var_named_instance_get_subfamily_name_id: @face: The hb_face_t to work on @instance_index: The index of the named instance to query
Fetches the name table Name ID that provides display names for the "Subfamily name" defined for the given named instance in the face.
Return value: the Name ID found for the Subfamily name
Since: 2.2.0
Definition at line 211 of file hb-ot-var.cc.
◆ hb_ot_var_normalize_coords()
| void hb_ot_var_normalize_coords | ( | hb_face_t * | face, |
| unsigned int | coords_length, | ||
| const float * | design_coords, | ||
| int * | normalized_coords | ||
| ) |
hb_ot_var_normalize_coords: @face: The hb_face_t to work on @coords_length: The length of the coordinate array @design_coords: The design-space coordinates to normalize @normalized_coords: (out): The normalized coordinates
Normalizes the given design-space coordinates. The minimum and maximum values for the axis are mapped to the interval [-1,1], with the default axis value mapped to 0.
The normalized values have 14 bits of fixed-point sub-integer precision as per OpenType specification.
Any additional scaling defined in the face's avar table is also applied, as described at https://docs.microsoft.com/en-us/typography/opentype/spec/avar
Since: 1.4.2
Definition at line 315 of file hb-ot-var.cc.
◆ hb_ot_var_normalize_variations()
| void hb_ot_var_normalize_variations | ( | hb_face_t * | face, |
| const hb_variation_t * | variations, | ||
| unsigned int | variations_length, | ||
| int * | coords, | ||
| unsigned int | coords_length | ||
| ) |
hb_ot_var_normalize_variations: @face: The hb_face_t to work on @variations: The array of variations to normalize @variations_length: The number of variations to normalize @coords: (out) (array length=coords_length): The array of normalized coordinates @coords_length: The length of the coordinate array
Normalizes all of the coordinates in the given list of variation axes.
Since: 1.4.2
Definition at line 274 of file hb-ot-var.cc.
