/*
* Copyright © 2009 Red Hat , Inc .
*
* This is part of HarfBuzz , a text shaping library .
*
* Permission is hereby granted , without written agreement and without
* license or royalty fees , to use , copy , modify , and distribute this
* software and its documentation for any purpose , provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software .
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT , INDIRECT , SPECIAL , INCIDENTAL , OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION , EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE .
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES , INCLUDING ,
* BUT NOT LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE . THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN " AS IS " BASIS , AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE , SUPPORT , UPDATES , ENHANCEMENTS , OR MODIFICATIONS .
*
* Red Hat Author ( s ) : Behdad Esfahbod
*/
#if !defined (HB_H_IN) && !defined (HB_NO_SINGLE_HEADER_ERROR)
#error "Include <hb.h> instead."
#endif
#ifndef HB_FACE_H
#define HB_FACE_H
#include "hb-common.h"
#include "hb-blob.h"
#include "hb-map.h"
#include "hb-set.h"
HB_BEGIN_DECLS
HB_EXTERN unsigned int
hb_face_count (hb_blob_t *blob);
/*
* hb_face_t
*/
/**
* hb_face_t :
*
* Data type for holding font faces .
*
**/
typedef struct hb_face_t hb_face_t;
HB_EXTERN hb_face_t *
hb_face_create (hb_blob_t *blob,
unsigned int index);
HB_EXTERN hb_face_t *
hb_face_create_or_fail (hb_blob_t *blob,
unsigned int index);
HB_EXTERN hb_face_t *
hb_face_create_from_file_or_fail (const char *file_name,
unsigned int index);
/**
* hb_reference_table_func_t :
* @ face : an # hb_face_t to reference table for
* @ tag : the tag of the table to reference
* @ user_data : User data pointer passed by the caller
*
* Callback function for hb_face_create_for_tables ( ) .
*
* Return value : ( transfer full ) : A pointer to the @ tag table within @ face
*
* Since : 0 . 9 . 2
*/
typedef hb_blob_t * (*hb_reference_table_func_t) (hb_face_t *face, hb_tag_t tag, void *user_data);
/* calls destroy() when not needing user_data anymore */
HB_EXTERN hb_face_t *
hb_face_create_for_tables (hb_reference_table_func_t reference_table_func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN hb_face_t *
hb_face_get_empty (void );
HB_EXTERN hb_face_t *
hb_face_reference (hb_face_t *face);
HB_EXTERN void
hb_face_destroy (hb_face_t *face);
HB_EXTERN hb_bool_t
hb_face_set_user_data (hb_face_t *face,
hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace);
HB_EXTERN void *
hb_face_get_user_data (const hb_face_t *face,
hb_user_data_key_t *key);
HB_EXTERN void
hb_face_make_immutable (hb_face_t *face);
HB_EXTERN hb_bool_t
hb_face_is_immutable (const hb_face_t *face);
HB_EXTERN hb_blob_t *
hb_face_reference_table (const hb_face_t *face,
hb_tag_t tag);
HB_EXTERN hb_blob_t *
hb_face_reference_blob (hb_face_t *face);
HB_EXTERN void
hb_face_set_index (hb_face_t *face,
unsigned int index);
HB_EXTERN unsigned int
hb_face_get_index (const hb_face_t *face);
HB_EXTERN void
hb_face_set_upem (hb_face_t *face,
unsigned int upem);
HB_EXTERN unsigned int
hb_face_get_upem (const hb_face_t *face);
HB_EXTERN void
hb_face_set_glyph_count (hb_face_t *face,
unsigned int glyph_count);
HB_EXTERN unsigned int
hb_face_get_glyph_count (const hb_face_t *face);
/**
* hb_get_table_tags_func_t :
* @ face : A face object
* @ start_offset : The index of first table tag to retrieve
* @ table_count : ( inout ) : Input = the maximum number of table tags to return ;
* Output = the actual number of table tags returned ( may be zero )
* @ table_tags : ( out ) ( array length = table_count ) : The array of table tags found
* @ user_data : User data pointer passed by the caller
*
* Callback function for hb_face_get_table_tags ( ) .
*
* Return value : Total number of tables , or zero if it is not possible to list
*
* Since : 10 . 0 . 0
*/
typedef unsigned int (*hb_get_table_tags_func_t) (const hb_face_t *face,
unsigned int start_offset,
unsigned int *table_count, /* IN/OUT */
hb_tag_t *table_tags /* OUT */,
void *user_data);
HB_EXTERN void
hb_face_set_get_table_tags_func (hb_face_t *face,
hb_get_table_tags_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN unsigned int
hb_face_get_table_tags (const hb_face_t *face,
unsigned int start_offset,
unsigned int *table_count, /* IN/OUT */
hb_tag_t *table_tags /* OUT */);
/*
* Character set .
*/
HB_EXTERN void
hb_face_collect_unicodes (hb_face_t *face,
hb_set_t *out);
HB_EXTERN void
hb_face_collect_nominal_glyph_mapping (hb_face_t *face,
hb_map_t *mapping,
hb_set_t *unicodes);
HB_EXTERN void
hb_face_collect_variation_selectors (hb_face_t *face,
hb_set_t *out);
HB_EXTERN void
hb_face_collect_variation_unicodes (hb_face_t *face,
hb_codepoint_t variation_selector,
hb_set_t *out);
/*
* Builder face .
*/
HB_EXTERN hb_face_t *
hb_face_builder_create (void );
HB_EXTERN hb_bool_t
hb_face_builder_add_table (hb_face_t *face,
hb_tag_t tag,
hb_blob_t *blob);
HB_EXTERN void
hb_face_builder_sort_tables (hb_face_t *face,
const hb_tag_t *tags);
HB_END_DECLS
#endif /* HB_FACE_H */
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