1 /* 2 * Copyright © 2009 Red Hat, Inc. 3 * 4 * This is part of HarfBuzz, a text shaping library. 5 * 6 * Permission is hereby granted, without written agreement and without 7 * license or royalty fees, to use, copy, modify, and distribute this 8 * software and its documentation for any purpose, provided that the 9 * above copyright notice and the following two paragraphs appear in 10 * all copies of this software. 11 * 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16 * DAMAGE. 17 * 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23 * 24 * Red Hat Author(s): Behdad Esfahbod 25 */ 26 27 #ifndef HB_H_IN 28 #error "Include <hb.h> instead." 29 #endif 30 31 #ifndef HB_FACE_H 32 #define HB_FACE_H 33 34 #include "hb-common.h" 35 #include "hb-blob.h" 36 #include "hb-set.h" 37 38 HB_BEGIN_DECLS 39 40 41 HB_EXTERN unsigned int 42 hb_face_count (hb_blob_t *blob); 43 44 45 /* 46 * hb_face_t 47 */ 48 49 typedef struct hb_face_t hb_face_t; 50 51 HB_EXTERN hb_face_t * 52 hb_face_create (hb_blob_t *blob, 53 unsigned int index); 54 55 typedef hb_blob_t * (*hb_reference_table_func_t) (hb_face_t *face, hb_tag_t tag, void *user_data); 56 57 /* calls destroy() when not needing user_data anymore */ 58 HB_EXTERN hb_face_t * 59 hb_face_create_for_tables (hb_reference_table_func_t reference_table_func, 60 void *user_data, 61 hb_destroy_func_t destroy); 62 63 HB_EXTERN hb_face_t * 64 hb_face_get_empty (void); 65 66 HB_EXTERN hb_face_t * 67 hb_face_reference (hb_face_t *face); 68 69 HB_EXTERN void 70 hb_face_destroy (hb_face_t *face); 71 72 HB_EXTERN hb_bool_t 73 hb_face_set_user_data (hb_face_t *face, 74 hb_user_data_key_t *key, 75 void * data, 76 hb_destroy_func_t destroy, 77 hb_bool_t replace); 78 79 HB_EXTERN void * 80 hb_face_get_user_data (const hb_face_t *face, 81 hb_user_data_key_t *key); 82 83 HB_EXTERN void 84 hb_face_make_immutable (hb_face_t *face); 85 86 HB_EXTERN hb_bool_t 87 hb_face_is_immutable (const hb_face_t *face); 88 89 90 HB_EXTERN hb_blob_t * 91 hb_face_reference_table (const hb_face_t *face, 92 hb_tag_t tag); 93 94 HB_EXTERN hb_blob_t * 95 hb_face_reference_blob (hb_face_t *face); 96 97 HB_EXTERN void 98 hb_face_set_index (hb_face_t *face, 99 unsigned int index); 100 101 HB_EXTERN unsigned int 102 hb_face_get_index (const hb_face_t *face); 103 104 HB_EXTERN void 105 hb_face_set_upem (hb_face_t *face, 106 unsigned int upem); 107 108 HB_EXTERN unsigned int 109 hb_face_get_upem (const hb_face_t *face); 110 111 HB_EXTERN void 112 hb_face_set_glyph_count (hb_face_t *face, 113 unsigned int glyph_count); 114 115 HB_EXTERN unsigned int 116 hb_face_get_glyph_count (const hb_face_t *face); 117 118 HB_EXTERN unsigned int 119 hb_face_get_table_tags (const hb_face_t *face, 120 unsigned int start_offset, 121 unsigned int *table_count, /* IN/OUT */ 122 hb_tag_t *table_tags /* OUT */); 123 124 125 /* 126 * Character set. 127 */ 128 129 HB_EXTERN void 130 hb_face_collect_unicodes (hb_face_t *face, 131 hb_set_t *out); 132 133 HB_EXTERN void 134 hb_face_collect_variation_selectors (hb_face_t *face, 135 hb_set_t *out); 136 137 HB_EXTERN void 138 hb_face_collect_variation_unicodes (hb_face_t *face, 139 hb_codepoint_t variation_selector, 140 hb_set_t *out); 141 142 143 /* 144 * Builder face. 145 */ 146 147 HB_EXTERN hb_face_t * 148 hb_face_builder_create (void); 149 150 HB_EXTERN hb_bool_t 151 hb_face_builder_add_table (hb_face_t *face, 152 hb_tag_t tag, 153 hb_blob_t *blob); 154 155 156 HB_END_DECLS 157 158 #endif /* HB_FACE_H */ 159