215 lines
5.4 KiB
C++
215 lines
5.4 KiB
C++
/*
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* Copyright © 2009 Red Hat, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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*/
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#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
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#error "Include <hb.h> instead."
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#endif
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#ifndef HB_FACE_H
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#define HB_FACE_H
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#include "hb-common.h"
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#include "hb-blob.h"
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#include "hb-map.h"
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#include "hb-set.h"
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HB_BEGIN_DECLS
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HB_EXTERN unsigned int
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hb_face_count (hb_blob_t *blob);
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/*
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* hb_face_t
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*/
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/**
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* hb_face_t:
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*
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* Data type for holding font faces.
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*
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**/
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typedef struct hb_face_t hb_face_t;
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HB_EXTERN hb_face_t *
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hb_face_create (hb_blob_t *blob,
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unsigned int index);
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/**
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* hb_reference_table_func_t:
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* @face: an #hb_face_t to reference table for
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* @tag: the tag of the table to reference
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* @user_data: User data pointer passed by the caller
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*
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* Callback function for hb_face_create_for_tables().
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*
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* Return value: (transfer full): A pointer to the @tag table within @face
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*
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* Since: 0.9.2
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*/
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typedef hb_blob_t * (*hb_reference_table_func_t) (hb_face_t *face, hb_tag_t tag, void *user_data);
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/* calls destroy() when not needing user_data anymore */
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HB_EXTERN hb_face_t *
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hb_face_create_for_tables (hb_reference_table_func_t reference_table_func,
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void *user_data,
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hb_destroy_func_t destroy);
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HB_EXTERN hb_face_t *
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hb_face_get_empty (void);
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HB_EXTERN hb_face_t *
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hb_face_reference (hb_face_t *face);
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HB_EXTERN void
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hb_face_destroy (hb_face_t *face);
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HB_EXTERN hb_bool_t
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hb_face_set_user_data (hb_face_t *face,
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hb_user_data_key_t *key,
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void * data,
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hb_destroy_func_t destroy,
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hb_bool_t replace);
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HB_EXTERN void *
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hb_face_get_user_data (const hb_face_t *face,
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hb_user_data_key_t *key);
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HB_EXTERN void
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hb_face_make_immutable (hb_face_t *face);
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HB_EXTERN hb_bool_t
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hb_face_is_immutable (const hb_face_t *face);
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HB_EXTERN hb_blob_t *
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hb_face_reference_table (const hb_face_t *face,
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hb_tag_t tag);
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HB_EXTERN hb_blob_t *
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hb_face_reference_blob (hb_face_t *face);
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HB_EXTERN void
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hb_face_set_index (hb_face_t *face,
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unsigned int index);
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HB_EXTERN unsigned int
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hb_face_get_index (const hb_face_t *face);
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HB_EXTERN void
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hb_face_set_upem (hb_face_t *face,
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unsigned int upem);
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HB_EXTERN unsigned int
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hb_face_get_upem (const hb_face_t *face);
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HB_EXTERN void
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hb_face_set_glyph_count (hb_face_t *face,
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unsigned int glyph_count);
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HB_EXTERN unsigned int
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hb_face_get_glyph_count (const hb_face_t *face);
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/**
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* hb_get_table_tags_func_t:
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* @face: A face object
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* @start_offset: The index of first table tag to retrieve
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* @table_count: (inout): Input = the maximum number of table tags to return;
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* Output = the actual number of table tags returned (may be zero)
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* @table_tags: (out) (array length=table_count): The array of table tags found
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* @user_data: User data pointer passed by the caller
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*
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* Callback function for hb_face_get_table_tags().
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*
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* Return value: Total number of tables, or zero if it is not possible to list
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*
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* Since: 10.0.0
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*/
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typedef unsigned int (*hb_get_table_tags_func_t) (const hb_face_t *face,
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unsigned int start_offset,
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unsigned int *table_count, /* IN/OUT */
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hb_tag_t *table_tags /* OUT */,
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void *user_data);
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HB_EXTERN void
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hb_face_set_get_table_tags_func (hb_face_t *face,
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hb_get_table_tags_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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HB_EXTERN unsigned int
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hb_face_get_table_tags (const hb_face_t *face,
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unsigned int start_offset,
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unsigned int *table_count, /* IN/OUT */
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hb_tag_t *table_tags /* OUT */);
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/*
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* Character set.
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*/
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HB_EXTERN void
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hb_face_collect_unicodes (hb_face_t *face,
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hb_set_t *out);
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HB_EXTERN void
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hb_face_collect_nominal_glyph_mapping (hb_face_t *face,
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hb_map_t *mapping,
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hb_set_t *unicodes);
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HB_EXTERN void
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hb_face_collect_variation_selectors (hb_face_t *face,
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hb_set_t *out);
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HB_EXTERN void
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hb_face_collect_variation_unicodes (hb_face_t *face,
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hb_codepoint_t variation_selector,
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hb_set_t *out);
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/*
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* Builder face.
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*/
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HB_EXTERN hb_face_t *
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hb_face_builder_create (void);
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HB_EXTERN hb_bool_t
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hb_face_builder_add_table (hb_face_t *face,
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hb_tag_t tag,
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hb_blob_t *blob);
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HB_EXTERN void
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hb_face_builder_sort_tables (hb_face_t *face,
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const hb_tag_t *tags);
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HB_END_DECLS
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#endif /* HB_FACE_H */
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