Add GTK-Doc comments for hb-ot-var.

This commit is contained in:
Nathan Willis 2019-04-11 19:45:12 +01:00 committed by Khaled Hosny
parent 82fe13182d
commit 938add712a
2 changed files with 150 additions and 6 deletions

View File

@ -52,11 +52,11 @@
/**
* hb_ot_var_has_data:
* @face: #hb_face_t to test
* @face: The #hb_face_t to work on
*
* This function allows to verify the presence of OpenType variation data on the face.
* Tests whether a face includes any OpenType variation data in the 'fvar' table.
*
* Return value: true if face has a `fvar' table and false otherwise
* Return value: true if data found, false otherwise
*
* Since: 1.4.2
**/
@ -68,6 +68,11 @@ hb_ot_var_has_data (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
**/
@ -80,9 +85,17 @@ hb_ot_var_get_axis_count (hb_face_t *face)
#ifndef HB_DISABLE_DEPRECATED
/**
* hb_ot_var_get_axes:
* @face: #hb_face_t to work upon
* @start_offset: offset of the first lookup to retrieve
* @axes_count: (inout) (allow-none): Input = the maximum number of variation axes to return;
* Output = the actual number of variation axes returned (may be zero)
* @axes_array: (out) (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
* Deprecated: 2.2.0 - use #hb_ot_var_get_axis_infos instead
**/
unsigned int
hb_ot_var_get_axes (hb_face_t *face,
@ -95,9 +108,16 @@ hb_ot_var_get_axes (hb_face_t *face,
/**
* 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
* Deprecated: 2.2.0 - use #hb_ot_var_find_axis_info instead
**/
hb_bool_t
hb_ot_var_find_axis (hb_face_t *face,
@ -111,6 +131,16 @@ hb_ot_var_find_axis (hb_face_t *face,
/**
* 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) (allow-none): Input = the maximum number of variation axes to return;
* Output = the actual number of variation axes returned (may be zero)
* @axes_array: (out) (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
**/
@ -125,6 +155,14 @@ hb_ot_var_get_axis_infos (hb_face_t *face,
/**
* 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
**/
@ -141,12 +179,34 @@ hb_ot_var_find_axis_info (hb_face_t *face,
* Named instances.
*/
/**
* 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
**/
unsigned int
hb_ot_var_get_named_instance_count (hb_face_t *face)
{
return face->table.fvar->get_instance_count ();
}
/**
* 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
**/
hb_ot_name_id_t
hb_ot_var_named_instance_get_subfamily_name_id (hb_face_t *face,
unsigned int instance_index)
@ -154,6 +214,18 @@ hb_ot_var_named_instance_get_subfamily_name_id (hb_face_t *face,
return face->table.fvar->get_instance_subfamily_name_id (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
**/
hb_ot_name_id_t
hb_ot_var_named_instance_get_postscript_name_id (hb_face_t *face,
unsigned int instance_index)
@ -161,6 +233,21 @@ hb_ot_var_named_instance_get_postscript_name_id (hb_face_t *face,
return face->table.fvar->get_instance_postscript_name_id (instance_index);
}
/**
* 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) (allow-none): 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
**/
unsigned int
hb_ot_var_named_instance_get_design_coords (hb_face_t *face,
unsigned int instance_index,
@ -173,6 +260,13 @@ hb_ot_var_named_instance_get_design_coords (hb_face_t *face,
/**
* 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
**/
@ -200,6 +294,17 @@ hb_ot_var_normalize_variations (hb_face_t *face,
/**
* 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.
*
* 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
**/

View File

@ -35,11 +35,36 @@
HB_BEGIN_DECLS
/**
* hb_tag_t:
* @HB_OT_TAG_VAR_AXIS_ITALIC: Registered tag for the roman/italic axis
*/
#define HB_OT_TAG_VAR_AXIS_ITALIC HB_TAG('i','t','a','l')
/**
* hb_tag_t:
* @HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE: Registered tag for the optical-size axis
*
* <note>Note: The optical-size axis supersedes the OpenType `size` feature.</note>
*/
#define HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE HB_TAG('o','p','s','z')
/**
* hb_tag_t:
* @HB_OT_TAG_VAR_AXIS_SLANT: Registered tag for the slant axis
*/
#define HB_OT_TAG_VAR_AXIS_SLANT HB_TAG('s','l','n','t')
/**
* hb_tag_t:
* @HB_OT_TAG_VAR_AXIS_WIDTH: Registered tag for the width axis
*/
#define HB_OT_TAG_VAR_AXIS_WIDTH HB_TAG('w','d','t','h')
/**
* hb_tag_t:
* @HB_OT_TAG_VAR_AXIS_WEIGHT: Registered tag for the weight axis
*/
#define HB_OT_TAG_VAR_AXIS_WEIGHT HB_TAG('w','g','h','t')
@ -73,6 +98,20 @@ typedef enum { /*< flags >*/
/**
* hb_ot_var_axis_info_t:
* @axis_index: Index of the axis in the variation-axis array
* @tag: The #hb_tag_t tag identifying the design variation of the axis
* @name_id: The `name` table Name ID that provides display names for the axis
* @flags: The #hb_ot_var_axis_flags_t flags for the axis
* @min_value: The mininum value on the variation axis that the font covers
* @default_value: The position on the variation axis corresponding to the font's defaults
* @max_value: The maximum value on the variation axis that the font covers
*
* Data type for holding variation-axis values.
*
* The minimum, default, and maximum values are in un-normalized, user scales.
*
* <note>Note: at present, the only flag defined for @flags is
* #HB_OT_VAR_AXIS_FLAG_HIDDEN.</note>
*
* Since: 2.2.0
*/