kc3-lang/harfbuzz/src/hb-face.h

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• Hash : dae39c58
  Author :
  Date : 2018-08-25T22:44:39
  

  [face] Introduce character-map API
  
  New API:
  +hb_face_collect_unicodes
  +hb_face_collect_variation_selectors
  +hb_face_collect_variation_unicodes
  

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• src/hb-face.h

• /*
   * 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
   */
  
  #ifndef HB_H_IN
  #error "Include <hb.h> instead."
  #endif
  
  #ifndef HB_FACE_H
  #define HB_FACE_H
  
  #include "hb-common.h"
  #include "hb-blob.h"
  #include "hb-set.h"
  
  HB_BEGIN_DECLS
  
  
  HB_EXTERN unsigned int
  hb_face_count (hb_blob_t *blob);
  
  
  /*
   * hb_face_t
   */
  
  typedef struct hb_face_t hb_face_t;
  
  HB_EXTERN hb_face_t *
  hb_face_create (hb_blob_t    *blob,
  		unsigned int  index);
  
  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_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_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_END_DECLS
  
  #endif /* HB_FACE_H */
  

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