src/hb-unicode.h

   1 /*
   2  * Copyright © 2009  Red Hat, Inc.
   3  * Copyright © 2011  Codethink Limited
   4  * Copyright © 2011  Google, Inc.
   5  *
   6  *  This is part of HarfBuzz, a text shaping library.
   7  *
   8  * Permission is hereby granted, without written agreement and without
   9  * license or royalty fees, to use, copy, modify, and distribute this
  10  * software and its documentation for any purpose, provided that the
  11  * above copyright notice and the following two paragraphs appear in
  12  * all copies of this software.
  13  *
  14  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  15  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  16  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  17  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  18  * DAMAGE.
  19  *
  20  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  21  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  22  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  23  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  24  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  25  *
  26  * Red Hat Author(s): Behdad Esfahbod
  27  * Codethink Author(s): Ryan Lortie
  28  * Google Author(s): Behdad Esfahbod
  29  */
  30
  31 #ifndef HB_UNICODE_H
  32 #define HB_UNICODE_H
  33
  34 #include "hb-common.h"
  35
  36 HB_BEGIN_DECLS
  37
  38
  39 /*
  40  * hb_unicode_funcs_t
  41  */
  42
  43 typedef struct _hb_unicode_funcs_t hb_unicode_funcs_t;
  44
  45
  46 /*
  47  * just give me the best implementation you've got there.
  48  */
  49 hb_unicode_funcs_t *
  50 hb_unicode_funcs_get_default (void);
  51
  52
  53 hb_unicode_funcs_t *
  54 hb_unicode_funcs_create (hb_unicode_funcs_t *parent);
  55
  56 hb_unicode_funcs_t *
  57 hb_unicode_funcs_get_empty (void);
  58
  59 hb_unicode_funcs_t *
  60 hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs);
  61
  62 void
  63 hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs);
  64
  65 hb_bool_t
  66 hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs,
  67                                 hb_user_data_key_t *key,
  68                                 void *              data,
  69                                 hb_destroy_func_t   destroy);
  70
  71
  72 void *
  73 hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs,
  74                                 hb_user_data_key_t *key);
  75
  76
  77 void
  78 hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs);
  79
  80 hb_bool_t
  81 hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs);
  82
  83 hb_unicode_funcs_t *
  84 hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs);
  85
  86
  87 /*
  88  * funcs
  89  */
  90
  91 /* typedefs */
  92
  93 typedef unsigned int                  (*hb_unicode_get_combining_class_func_t)  (hb_unicode_funcs_t *ufuncs,
  94                                                                                  hb_codepoint_t      unicode,
  95                                                                                  void               *user_data);
  96 typedef unsigned int                  (*hb_unicode_get_eastasian_width_func_t)  (hb_unicode_funcs_t *ufuncs,
  97                                                                                  hb_codepoint_t      unicode,
  98                                                                                  void               *user_data);
  99 typedef hb_unicode_general_category_t (*hb_unicode_get_general_category_func_t) (hb_unicode_funcs_t *ufuncs,
 100                                                                                  hb_codepoint_t      unicode,
 101                                                                                  void               *user_data);
 102 typedef hb_codepoint_t                (*hb_unicode_get_mirroring_func_t)        (hb_unicode_funcs_t *ufuncs,
 103                                                                                  hb_codepoint_t      unicode,
 104                                                                                  void               *user_data);
 105 typedef hb_script_t                   (*hb_unicode_get_script_func_t)           (hb_unicode_funcs_t *ufuncs,
 106                                                                                  hb_codepoint_t      unicode,
 107                                                                                  void               *user_data);
 108
 109 /* setters */
 110
 111 void
 112 hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
 113                                            hb_unicode_get_combining_class_func_t combining_class_func,
 114                                            void *user_data, hb_destroy_func_t destroy);
 115
 116 void
 117 hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
 118                                            hb_unicode_get_eastasian_width_func_t eastasian_width_func,
 119                                            void *user_data, hb_destroy_func_t destroy);
 120
 121 void
 122 hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
 123                                             hb_unicode_get_general_category_func_t general_category_func,
 124                                             void *user_data, hb_destroy_func_t destroy);
 125
 126 void
 127 hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
 128                                      hb_unicode_get_mirroring_func_t mirroring_func,
 129                                      void *user_data, hb_destroy_func_t destroy);
 130
 131 void
 132 hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
 133                                   hb_unicode_get_script_func_t script_func,
 134                                   void *user_data, hb_destroy_func_t destroy);
 135
 136
 137
 138 /* accessors */
 139
 140 unsigned int
 141 hb_unicode_get_combining_class (hb_unicode_funcs_t *ufuncs,
 142                                 hb_codepoint_t unicode);
 143
 144 unsigned int
 145 hb_unicode_get_eastasian_width (hb_unicode_funcs_t *ufuncs,
 146                                 hb_codepoint_t unicode);
 147
 148 hb_unicode_general_category_t
 149 hb_unicode_get_general_category (hb_unicode_funcs_t *ufuncs,
 150                                  hb_codepoint_t unicode);
 151
 152 hb_codepoint_t
 153 hb_unicode_get_mirroring (hb_unicode_funcs_t *ufuncs,
 154                           hb_codepoint_t unicode);
 155
 156 hb_script_t
 157 hb_unicode_get_script (hb_unicode_funcs_t *ufuncs,
 158                        hb_codepoint_t unicode);
 159
 160
 161 HB_END_DECLS
 162
 163 #endif /* HB_UNICODE_H */