1 /* 2 * Copyright 2007,2008,2009 Red Hat, Inc. 3 * Copyright 2011,2012 Google, Inc. 4 * 5 * This is part of HarfBuzz, a text shaping library. 6 * 7 * Permission is hereby granted, without written agreement and without 8 * license or royalty fees, to use, copy, modify, and distribute this 9 * software and its documentation for any purpose, provided that the 10 * above copyright notice and the following two paragraphs appear in 11 * all copies of this software. 12 * 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 17 * DAMAGE. 18 * 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 24 * 25 * Red Hat Author(s): Behdad Esfahbod 26 * Google Author(s): Behdad Esfahbod 27 */ 28 29 #ifndef HB_H_IN 30 #error "Include <hb.h> instead." 31 #endif 32 33 #ifndef HB_COMMON_H 34 #define HB_COMMON_H 35 36 #ifndef HB_EXTERN 37 #define HB_EXTERN extern 38 #endif 39 40 #ifndef HB_BEGIN_DECLS 41 # ifdef __cplusplus 42 # define HB_BEGIN_DECLS extern "C" { 43 # define HB_END_DECLS } 44 # else /* !__cplusplus */ 45 # define HB_BEGIN_DECLS 46 # define HB_END_DECLS 47 # endif /* !__cplusplus */ 48 #endif 49 50 #if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \ 51 defined (_sgi) || defined (__sun) || defined (sun) || \ 52 defined (__digital__) || defined (__HP_cc) 53 # include <inttypes.h> 54 #elif defined (_AIX) 55 # include <sys/inttypes.h> 56 #elif defined (_MSC_VER) && _MSC_VER < 1600 57 /* VS 2010 (_MSC_VER 1600) has stdint.h */ 58 typedef __int8 int8_t; 59 typedef unsigned __int8 uint8_t; 60 typedef __int16 int16_t; 61 typedef unsigned __int16 uint16_t; 62 typedef __int32 int32_t; 63 typedef unsigned __int32 uint32_t; 64 typedef __int64 int64_t; 65 typedef unsigned __int64 uint64_t; 66 #else 67 # include <stdint.h> 68 #endif 69 70 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) 71 #define HB_DEPRECATED __attribute__((__deprecated__)) 72 #elif defined(_MSC_VER) && (_MSC_VER >= 1300) 73 #define HB_DEPRECATED __declspec(deprecated) 74 #else 75 #define HB_DEPRECATED 76 #endif 77 78 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) 79 #define HB_DEPRECATED_FOR(f) __attribute__((__deprecated__("Use '" #f "' instead"))) 80 #elif defined(_MSC_FULL_VER) && (_MSC_FULL_VER > 140050320) 81 #define HB_DEPRECATED_FOR(f) __declspec(deprecated("is deprecated. Use '" #f "' instead")) 82 #else 83 #define HB_DEPRECATED_FOR(f) HB_DEPRECATED 84 #endif 85 86 87 HB_BEGIN_DECLS 88 89 90 typedef int hb_bool_t; 91 92 typedef uint32_t hb_codepoint_t; 93 typedef int32_t hb_position_t; 94 typedef uint32_t hb_mask_t; 95 96 typedef union _hb_var_int_t { 97 uint32_t u32; 98 int32_t i32; 99 uint16_t u16[2]; 100 int16_t i16[2]; 101 uint8_t u8[4]; 102 int8_t i8[4]; 103 } hb_var_int_t; 104 105 106 /* hb_tag_t */ 107 108 typedef uint32_t hb_tag_t; 109 110 #define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint32_t)(c1)&0xFF)<<24)|(((uint32_t)(c2)&0xFF)<<16)|(((uint32_t)(c3)&0xFF)<<8)|((uint32_t)(c4)&0xFF))) 111 #define HB_UNTAG(tag) (((tag)>>24)&0xFF), (((tag)>>16)&0xFF), (((tag)>>8)&0xFF), ((tag)&0xFF) 112 113 #define HB_TAG_NONE HB_TAG(0,0,0,0) 114 #define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff) 115 #define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff) 116 117 /* len=-1 means str is NUL-terminated. */ 118 HB_EXTERN hb_tag_t 119 hb_tag_from_string (const char *str, int len); 120 121 /* buf should have 4 bytes. */ 122 HB_EXTERN void 123 hb_tag_to_string (hb_tag_t tag, char *buf); 124 125 126 /** 127 * hb_direction_t: 128 * @HB_DIRECTION_INVALID: Initial, unset direction. 129 * @HB_DIRECTION_LTR: Text is set horizontally from left to right. 130 * @HB_DIRECTION_RTL: Text is set horizontally from right to left. 131 * @HB_DIRECTION_TTB: Text is set vertically from top to bottom. 132 * @HB_DIRECTION_BTT: Text is set vertically from bottom to top. 133 */ 134 typedef enum { 135 HB_DIRECTION_INVALID = 0, 136 HB_DIRECTION_LTR = 4, 137 HB_DIRECTION_RTL, 138 HB_DIRECTION_TTB, 139 HB_DIRECTION_BTT 140 } hb_direction_t; 141 142 /* len=-1 means str is NUL-terminated */ 143 HB_EXTERN hb_direction_t 144 hb_direction_from_string (const char *str, int len); 145 146 HB_EXTERN const char * 147 hb_direction_to_string (hb_direction_t direction); 148 149 #define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) 150 /* Direction must be valid for the following */ 151 #define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) 152 #define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) 153 #define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) 154 #define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) 155 #define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) 156 157 158 /* hb_language_t */ 159 160 typedef const struct hb_language_impl_t *hb_language_t; 161 162 HB_EXTERN hb_language_t 163 hb_language_from_string (const char *str, int len); 164 165 HB_EXTERN const char * 166 hb_language_to_string (hb_language_t language); 167 168 #define HB_LANGUAGE_INVALID ((hb_language_t) 0) 169 170 HB_EXTERN hb_language_t 171 hb_language_get_default (void); 172 173 174 /* hb_script_t */ 175 176 /* https://unicode.org/iso15924/ */ 177 /* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */ 178 /* Unicode Character Database property: Script (sc) */ 179 typedef enum 180 { 181 /*1.1*/ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), 182 /*1.1*/ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), 183 /*5.0*/ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), 184 185 /*1.1*/ HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'), 186 /*1.1*/ HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'), 187 /*1.1*/ HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'), 188 /*1.1*/ HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'), 189 /*1.1*/ HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'), 190 /*1.1*/ HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'), 191 /*1.1*/ HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'), 192 /*1.1*/ HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'), 193 /*1.1*/ HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'), 194 /*1.1*/ HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'), 195 /*1.1*/ HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'), 196 /*1.1*/ HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'), 197 /*1.1*/ HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'), 198 /*1.1*/ HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'), 199 /*1.1*/ HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'), 200 /*1.1*/ HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'), 201 /*1.1*/ HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'), 202 /*1.1*/ HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'), 203 /*1.1*/ HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'), 204 /*1.1*/ HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'), 205 /*1.1*/ HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'), 206 /*1.1*/ HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'), 207 208 /*2.0*/ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), 209 210 /*3.0*/ HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'), 211 /*3.0*/ HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'), 212 /*3.0*/ HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'), 213 /*3.0*/ HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'), 214 /*3.0*/ HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'), 215 /*3.0*/ HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'), 216 /*3.0*/ HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'), 217 /*3.0*/ HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'), 218 /*3.0*/ HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'), 219 /*3.0*/ HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'), 220 /*3.0*/ HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'), 221 /*3.0*/ HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'), 222 /*3.0*/ HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'), 223 /*3.0*/ HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'), 224 225 /*3.1*/ HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'), 226 /*3.1*/ HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'), 227 /*3.1*/ HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'), 228 229 /*3.2*/ HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'), 230 /*3.2*/ HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'), 231 /*3.2*/ HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'), 232 /*3.2*/ HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'), 233 234 /*4.0*/ HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'), 235 /*4.0*/ HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'), 236 /*4.0*/ HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'), 237 /*4.0*/ HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'), 238 /*4.0*/ HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'), 239 /*4.0*/ HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'), 240 /*4.0*/ HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'), 241 242 /*4.1*/ HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'), 243 /*4.1*/ HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'), 244 /*4.1*/ HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'), 245 /*4.1*/ HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'), 246 /*4.1*/ HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'), 247 /*4.1*/ HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'), 248 /*4.1*/ HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'), 249 /*4.1*/ HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'), 250 251 /*5.0*/ HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'), 252 /*5.0*/ HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'), 253 /*5.0*/ HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'), 254 /*5.0*/ HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'), 255 /*5.0*/ HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'), 256 257 /*5.1*/ HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'), 258 /*5.1*/ HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'), 259 /*5.1*/ HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'), 260 /*5.1*/ HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'), 261 /*5.1*/ HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'), 262 /*5.1*/ HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'), 263 /*5.1*/ HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'), 264 /*5.1*/ HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'), 265 /*5.1*/ HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'), 266 /*5.1*/ HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'), 267 /*5.1*/ HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'), 268 269 /*5.2*/ HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'), 270 /*5.2*/ HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'), 271 /*5.2*/ HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'), 272 /*5.2*/ HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'), 273 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'), 274 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'), 275 /*5.2*/ HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'), 276 /*5.2*/ HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'), 277 /*5.2*/ HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'), 278 /*5.2*/ HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'), 279 /*5.2*/ HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'), 280 /*5.2*/ HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'), 281 /*5.2*/ HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'), 282 /*5.2*/ HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'), 283 /*5.2*/ HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'), 284 285 /*6.0*/ HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'), 286 /*6.0*/ HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'), 287 /*6.0*/ HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'), 288 289 /*6.1*/ HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'), 290 /*6.1*/ HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'), 291 /*6.1*/ HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'), 292 /*6.1*/ HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'), 293 /*6.1*/ HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'), 294 /*6.1*/ HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'), 295 /*6.1*/ HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'), 296 297 /* 298 * Since: 0.9.30 299 */ 300 /*7.0*/ HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'), 301 /*7.0*/ HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'), 302 /*7.0*/ HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'), 303 /*7.0*/ HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'), 304 /*7.0*/ HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'), 305 /*7.0*/ HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'), 306 /*7.0*/ HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'), 307 /*7.0*/ HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'), 308 /*7.0*/ HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'), 309 /*7.0*/ HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'), 310 /*7.0*/ HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'), 311 /*7.0*/ HB_SCRIPT_MODI = HB_TAG ('M','o','d','i'), 312 /*7.0*/ HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'), 313 /*7.0*/ HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'), 314 /*7.0*/ HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'), 315 /*7.0*/ HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'), 316 /*7.0*/ HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'), 317 /*7.0*/ HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'), 318 /*7.0*/ HB_SCRIPT_PAU_CIN_HAU = HB_TAG ('P','a','u','c'), 319 /*7.0*/ HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'), 320 /*7.0*/ HB_SCRIPT_SIDDHAM = HB_TAG ('S','i','d','d'), 321 /*7.0*/ HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'), 322 /*7.0*/ HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'), 323 324 /*8.0*/ HB_SCRIPT_AHOM = HB_TAG ('A','h','o','m'), 325 /*8.0*/ HB_SCRIPT_ANATOLIAN_HIEROGLYPHS = HB_TAG ('H','l','u','w'), 326 /*8.0*/ HB_SCRIPT_HATRAN = HB_TAG ('H','a','t','r'), 327 /*8.0*/ HB_SCRIPT_MULTANI = HB_TAG ('M','u','l','t'), 328 /*8.0*/ HB_SCRIPT_OLD_HUNGARIAN = HB_TAG ('H','u','n','g'), 329 /*8.0*/ HB_SCRIPT_SIGNWRITING = HB_TAG ('S','g','n','w'), 330 331 /* 332 * Since 1.3.0 333 */ 334 /*9.0*/ HB_SCRIPT_ADLAM = HB_TAG ('A','d','l','m'), 335 /*9.0*/ HB_SCRIPT_BHAIKSUKI = HB_TAG ('B','h','k','s'), 336 /*9.0*/ HB_SCRIPT_MARCHEN = HB_TAG ('M','a','r','c'), 337 /*9.0*/ HB_SCRIPT_OSAGE = HB_TAG ('O','s','g','e'), 338 /*9.0*/ HB_SCRIPT_TANGUT = HB_TAG ('T','a','n','g'), 339 /*9.0*/ HB_SCRIPT_NEWA = HB_TAG ('N','e','w','a'), 340 341 /* 342 * Since 1.6.0 343 */ 344 /*10.0*/HB_SCRIPT_MASARAM_GONDI = HB_TAG ('G','o','n','m'), 345 /*10.0*/HB_SCRIPT_NUSHU = HB_TAG ('N','s','h','u'), 346 /*10.0*/HB_SCRIPT_SOYOMBO = HB_TAG ('S','o','y','o'), 347 /*10.0*/HB_SCRIPT_ZANABAZAR_SQUARE = HB_TAG ('Z','a','n','b'), 348 349 /* 350 * Since 1.8.0 351 */ 352 /*11.0*/HB_SCRIPT_DOGRA = HB_TAG ('D','o','g','r'), 353 /*11.0*/HB_SCRIPT_GUNJALA_GONDI = HB_TAG ('G','o','n','g'), 354 /*11.0*/HB_SCRIPT_HANIFI_ROHINGYA = HB_TAG ('R','o','h','g'), 355 /*11.0*/HB_SCRIPT_MAKASAR = HB_TAG ('M','a','k','a'), 356 /*11.0*/HB_SCRIPT_MEDEFAIDRIN = HB_TAG ('M','e','d','f'), 357 /*11.0*/HB_SCRIPT_OLD_SOGDIAN = HB_TAG ('S','o','g','o'), 358 /*11.0*/HB_SCRIPT_SOGDIAN = HB_TAG ('S','o','g','d'), 359 360 /* No script set. */ 361 HB_SCRIPT_INVALID = HB_TAG_NONE, 362 363 /* Dummy values to ensure any hb_tag_t value can be passed/stored as hb_script_t 364 * without risking undefined behavior. We have two, for historical reasons. 365 * HB_TAG_MAX used to be unsigned, but that was invalid Ansi C, so was changed 366 * to _HB_SCRIPT_MAX_VALUE to be equal to HB_TAG_MAX_SIGNED as well. 367 * 368 * See this thread for technicalities: 369 * 370 * https://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html 371 */ 372 _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX_SIGNED, /*< skip >*/ 373 _HB_SCRIPT_MAX_VALUE_SIGNED = HB_TAG_MAX_SIGNED /*< skip >*/ 374 375 } hb_script_t; 376 377 378 /* Script functions */ 379 380 HB_EXTERN hb_script_t 381 hb_script_from_iso15924_tag (hb_tag_t tag); 382 383 HB_EXTERN hb_script_t 384 hb_script_from_string (const char *str, int len); 385 386 HB_EXTERN hb_tag_t 387 hb_script_to_iso15924_tag (hb_script_t script); 388 389 HB_EXTERN hb_direction_t 390 hb_script_get_horizontal_direction (hb_script_t script); 391 392 393 /* User data */ 394 395 typedef struct hb_user_data_key_t { 396 /*< private >*/ 397 char unused; 398 } hb_user_data_key_t; 399 400 typedef void (*hb_destroy_func_t) (void *user_data); 401 402 403 /* Font features and variations. */ 404 405 /** 406 * HB_FEATURE_GLOBAL_START 407 * 408 * Since: 2.0.0 409 */ 410 #define HB_FEATURE_GLOBAL_START 0 411 /** 412 * HB_FEATURE_GLOBAL_END 413 * 414 * Since: 2.0.0 415 */ 416 #define HB_FEATURE_GLOBAL_END ((unsigned int) -1) 417 418 typedef struct hb_feature_t { 419 hb_tag_t tag; 420 uint32_t value; 421 unsigned int start; 422 unsigned int end; 423 } hb_feature_t; 424 425 HB_EXTERN hb_bool_t 426 hb_feature_from_string (const char *str, int len, 427 hb_feature_t *feature); 428 429 HB_EXTERN void 430 hb_feature_to_string (hb_feature_t *feature, 431 char *buf, unsigned int size); 432 433 /** 434 * hb_variation_t: 435 * 436 * Since: 1.4.2 437 */ 438 typedef struct hb_variation_t { 439 hb_tag_t tag; 440 float value; 441 } hb_variation_t; 442 443 HB_EXTERN hb_bool_t 444 hb_variation_from_string (const char *str, int len, 445 hb_variation_t *variation); 446 447 HB_EXTERN void 448 hb_variation_to_string (hb_variation_t *variation, 449 char *buf, unsigned int size); 450 451 /** 452 * hb_color_t: 453 * 454 * Data type for holding color values. 455 * 456 * Since: 2.1.0 457 */ 458 typedef uint32_t hb_color_t; 459 460 #define HB_COLOR(b,g,r,a) ((hb_color_t) HB_TAG ((b),(g),(r),(a))) 461 462 /** 463 * hb_color_get_alpha: 464 * 465 * 466 * 467 * Since: 2.1.0 468 */ 469 #define hb_color_get_alpha(color) ((color) & 0xFF) 470 /** 471 * hb_color_get_red: 472 * 473 * 474 * 475 * Since: 2.1.0 476 */ 477 #define hb_color_get_red(color) (((color) >> 8) & 0xFF) 478 /** 479 * hb_color_get_green: 480 * 481 * 482 * 483 * Since: 2.1.0 484 */ 485 #define hb_color_get_green(color) (((color) >> 16) & 0xFF) 486 /** 487 * hb_color_get_blue: 488 * 489 * 490 * 491 * Since: 2.1.0 492 */ 493 #define hb_color_get_blue(color) (((color) >> 24) & 0xFF) 494 495 496 HB_END_DECLS 497 498 #endif /* HB_COMMON_H */ 499
