hb-ot-meta: HarfBuzz Manual

hb-ot-meta

hb-ot-meta — OpenType Metadata

Functions

unsigned int	hb_ot_meta_get_entry_tags ()
hb_blob_t *	hb_ot_meta_reference_entry ()

Types and Values

enum	hb_ot_meta_tag_t

Includes

#include <hb-ot.h>

Description

Functions for fetching metadata from fonts.

Functions

hb_ot_meta_get_entry_tags ()

unsigned int
hb_ot_meta_get_entry_tags (hb_face_t *face,
                           unsigned int start_offset,
                           unsigned int *entries_count,
                           hb_ot_meta_tag_t *entries);

Parameters

face	a face object
start_offset	iteration's start offset
entries_count	buffer size as input, filled size as output.	[inout][allow-none]
entries	entries tags buffer.	[out caller-allocates][array length=entries_count]

Returns

Number of all available feature types.

Since: 2.6.0

hb_ot_meta_reference_entry ()

hb_blob_t *
hb_ot_meta_reference_entry (hb_face_t *face,
                            hb_ot_meta_tag_t meta_tag);

It fetches metadata entry of a given tag from a font.

Parameters

face	a hb_face_t object.
meta_tag	tag of metadata you like to have.

Returns

A blob containing the blob.

[transfer full]

Since: 2.6.0

Types and Values

enum hb_ot_meta_tag_t

Known metadata tags from https://docs.microsoft.com/en-us/typography/opentype/spec/meta

Members

HB_OT_META_TAG_DESIGN_LANGUAGES	Design languages. Text, using only Basic Latin (ASCII) characters. Indicates languages and/or scripts for the user audiences that the font was primarily designed for.
HB_OT_META_TAG_SUPPORTED_LANGUAGES	Supported languages. Text, using only Basic Latin (ASCII) characters. Indicates languages and/or scripts that the font is declared to be capable of supporting.
_HB_OT_META_TAG_MAX_VALUE

Since: 2.6.0