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hb-ot-var

hb-ot-var — OpenType Font Variations

Object Hierarchy

    GFlags
    ╰── hb_ot_var_axis_flags_t

Includes

#include <hb-ot.h>

Description

Functions for fetching information about OpenType Variable Fonts.

Functions

hb_ot_var_has_data ()

hb_bool_t
hb_ot_var_has_data (hb_face_t *face);

This function allows to verify the presence of OpenType variation data on the face.

Parameters

face

hb_face_t to test

 

Returns

true if face has a `fvar' table and false otherwise

Since: 1.4.2


hb_ot_var_find_axis_info ()

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);

Since: 2.2.0


hb_ot_var_get_axis_count ()

unsigned int
hb_ot_var_get_axis_count (hb_face_t *face);

Since: 1.4.2


hb_ot_var_get_axis_infos ()

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);

Since: 2.2.0


hb_ot_var_get_named_instance_count ()

unsigned int
hb_ot_var_get_named_instance_count (hb_face_t *face);

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_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_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_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);

Since: 1.4.2


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);

Since: 1.4.2

Types and Values

HB_OT_TAG_VAR_AXIS_ITALIC

#define HB_OT_TAG_VAR_AXIS_ITALIC HB_TAG('i','t','a','l')

HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE

#define HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE HB_TAG('o','p','s','z')

HB_OT_TAG_VAR_AXIS_SLANT

#define HB_OT_TAG_VAR_AXIS_SLANT HB_TAG('s','l','n','t')

HB_OT_TAG_VAR_AXIS_WEIGHT

#define HB_OT_TAG_VAR_AXIS_WEIGHT HB_TAG('w','g','h','t')

HB_OT_TAG_VAR_AXIS_WIDTH

#define HB_OT_TAG_VAR_AXIS_WIDTH HB_TAG('w','d','t','h')

enum hb_ot_var_axis_flags_t

Members

HB_OT_VAR_AXIS_FLAG_HIDDEN

The axis should not be exposed directly in user interfaces.

 

_HB_OT_VAR_AXIS_FLAG_MAX_VALUE

   

Since: 2.2.0

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