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_BEGIN_DECLS 37 # ifdef __cplusplus 38 # define HB_BEGIN_DECLS extern "C" { 39 # define HB_END_DECLS } 40 # else /* !__cplusplus */ 41 # define HB_BEGIN_DECLS 42 # define HB_END_DECLS 43 # endif /* !__cplusplus */ 44 #endif 45 46 #if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \ 47 defined (_sgi) || defined (__sun) || defined (sun) || \ 48 defined (__digital__) || defined (__HP_cc) 49 # include <inttypes.h> 50 #elif defined (_AIX) 51 # include <sys/inttypes.h> 52 #else 53 # include <stdint.h> 54 #endif 55 56 HB_BEGIN_DECLS 57 58 59 typedef int hb_bool_t; 60 61 typedef uint32_t hb_codepoint_t; 62 typedef int32_t hb_position_t; 63 typedef uint32_t hb_mask_t; 64 65 typedef union _hb_var_int_t { 66 uint32_t u32; 67 int32_t i32; 68 uint16_t u16[2]; 69 int16_t i16[2]; 70 uint8_t u8[4]; 71 int8_t i8[4]; 72 } hb_var_int_t; 73 74 75 /* hb_tag_t */ 76 77 typedef uint32_t hb_tag_t; 78 79 #define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint8_t)(c1))<<24)|(((uint8_t)(c2))<<16)|(((uint8_t)(c3))<<8)|((uint8_t)(c4)))) 80 #define HB_UNTAG(tag) ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag)) 81 82 #define HB_TAG_NONE HB_TAG(0,0,0,0) 83 #define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff) 84 #define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff) 85 86 /* len=-1 means str is NUL-terminated. */ 87 HB_EXTERN hb_tag_t 88 hb_tag_from_string (const char *str, int len); 89 90 /* buf should have 4 bytes. */ 91 HB_EXTERN void 92 hb_tag_to_string (hb_tag_t tag, char *buf); 93 94 95 /** 96 * hb_direction_t: 97 * @HB_DIRECTION_INVALID: Initial, unset direction. 98 * @HB_DIRECTION_LTR: Text is set horizontally from left to right. 99 * @HB_DIRECTION_RTL: Text is set horizontally from right to left. 100 * @HB_DIRECTION_TTB: Text is set vertically from top to bottom. 101 * @HB_DIRECTION_BTT: Text is set vertically from bottom to top. 102 */ 103 typedef enum { 104 HB_DIRECTION_INVALID = 0, 105 HB_DIRECTION_LTR = 4, 106 HB_DIRECTION_RTL, 107 HB_DIRECTION_TTB, 108 HB_DIRECTION_BTT 109 } hb_direction_t; 110 111 /* len=-1 means str is NUL-terminated */ 112 HB_EXTERN hb_direction_t 113 hb_direction_from_string (const char *str, int len); 114 115 HB_EXTERN const char * 116 hb_direction_to_string (hb_direction_t direction); 117 118 #define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) 119 /* Direction must be valid for the following */ 120 #define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) 121 #define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) 122 #define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) 123 #define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) 124 #define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) 125 126 127 /* hb_language_t */ 128 129 typedef const struct hb_language_impl_t *hb_language_t; 130 131 HB_EXTERN hb_language_t 132 hb_language_from_string (const char *str, int len); 133 134 HB_EXTERN const char * 135 hb_language_to_string (hb_language_t language); 136 137 #define HB_LANGUAGE_INVALID ((hb_language_t) 0) 138 139 HB_EXTERN hb_language_t 140 hb_language_get_default (void); 141 142 143 /* hb_script_t */ 144 145 /* http://unicode.org/iso15924/ */ 146 /* http://goo.gl/x9ilM */ 147 /* Unicode Character Database property: Script (sc) */ 148 typedef enum 149 { 150 /*1.1*/ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), 151 /*1.1*/ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), 152 /*5.0*/ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), 153 154 /*1.1*/ HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'), 155 /*1.1*/ HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'), 156 /*1.1*/ HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'), 157 /*1.1*/ HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'), 158 /*1.1*/ HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'), 159 /*1.1*/ HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'), 160 /*1.1*/ HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'), 161 /*1.1*/ HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'), 162 /*1.1*/ HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'), 163 /*1.1*/ HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'), 164 /*1.1*/ HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'), 165 /*1.1*/ HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'), 166 /*1.1*/ HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'), 167 /*1.1*/ HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'), 168 /*1.1*/ HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'), 169 /*1.1*/ HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'), 170 /*1.1*/ HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'), 171 /*1.1*/ HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'), 172 /*1.1*/ HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'), 173 /*1.1*/ HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'), 174 /*1.1*/ HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'), 175 /*1.1*/ HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'), 176 177 /*2.0*/ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), 178 179 /*3.0*/ HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'), 180 /*3.0*/ HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'), 181 /*3.0*/ HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'), 182 /*3.0*/ HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'), 183 /*3.0*/ HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'), 184 /*3.0*/ HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'), 185 /*3.0*/ HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'), 186 /*3.0*/ HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'), 187 /*3.0*/ HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'), 188 /*3.0*/ HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'), 189 /*3.0*/ HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'), 190 /*3.0*/ HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'), 191 /*3.0*/ HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'), 192 /*3.0*/ HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'), 193 194 /*3.1*/ HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'), 195 /*3.1*/ HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'), 196 /*3.1*/ HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'), 197 198 /*3.2*/ HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'), 199 /*3.2*/ HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'), 200 /*3.2*/ HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'), 201 /*3.2*/ HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'), 202 203 /*4.0*/ HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'), 204 /*4.0*/ HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'), 205 /*4.0*/ HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'), 206 /*4.0*/ HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'), 207 /*4.0*/ HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'), 208 /*4.0*/ HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'), 209 /*4.0*/ HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'), 210 211 /*4.1*/ HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'), 212 /*4.1*/ HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'), 213 /*4.1*/ HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'), 214 /*4.1*/ HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'), 215 /*4.1*/ HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'), 216 /*4.1*/ HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'), 217 /*4.1*/ HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'), 218 /*4.1*/ HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'), 219 220 /*5.0*/ HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'), 221 /*5.0*/ HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'), 222 /*5.0*/ HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'), 223 /*5.0*/ HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'), 224 /*5.0*/ HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'), 225 226 /*5.1*/ HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'), 227 /*5.1*/ HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'), 228 /*5.1*/ HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'), 229 /*5.1*/ HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'), 230 /*5.1*/ HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'), 231 /*5.1*/ HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'), 232 /*5.1*/ HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'), 233 /*5.1*/ HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'), 234 /*5.1*/ HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'), 235 /*5.1*/ HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'), 236 /*5.1*/ HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'), 237 238 /*5.2*/ HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'), 239 /*5.2*/ HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'), 240 /*5.2*/ HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'), 241 /*5.2*/ HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'), 242 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'), 243 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'), 244 /*5.2*/ HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'), 245 /*5.2*/ HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'), 246 /*5.2*/ HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'), 247 /*5.2*/ HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'), 248 /*5.2*/ HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'), 249 /*5.2*/ HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'), 250 /*5.2*/ HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'), 251 /*5.2*/ HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'), 252 /*5.2*/ HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'), 253 254 /*6.0*/ HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'), 255 /*6.0*/ HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'), 256 /*6.0*/ HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'), 257 258 /*6.1*/ HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'), 259 /*6.1*/ HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'), 260 /*6.1*/ HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'), 261 /*6.1*/ HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'), 262 /*6.1*/ HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'), 263 /*6.1*/ HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'), 264 /*6.1*/ HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'), 265 266 /* 267 * Since: 0.9.30 268 */ 269 /*7.0*/ HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'), 270 /*7.0*/ HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'), 271 /*7.0*/ HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'), 272 /*7.0*/ HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'), 273 /*7.0*/ HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'), 274 /*7.0*/ HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'), 275 /*7.0*/ HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'), 276 /*7.0*/ HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'), 277 /*7.0*/ HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'), 278 /*7.0*/ HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'), 279 /*7.0*/ HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'), 280 /*7.0*/ HB_SCRIPT_MODI = HB_TAG ('M','o','d','i'), 281 /*7.0*/ HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'), 282 /*7.0*/ HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'), 283 /*7.0*/ HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'), 284 /*7.0*/ HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'), 285 /*7.0*/ HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'), 286 /*7.0*/ HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'), 287 /*7.0*/ HB_SCRIPT_PAU_CIN_HAU = HB_TAG ('P','a','u','c'), 288 /*7.0*/ HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'), 289 /*7.0*/ HB_SCRIPT_SIDDHAM = HB_TAG ('S','i','d','d'), 290 /*7.0*/ HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'), 291 /*7.0*/ HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'), 292 293 /*8.0*/ HB_SCRIPT_AHOM = HB_TAG ('A','h','o','m'), 294 /*8.0*/ HB_SCRIPT_ANATOLIAN_HIEROGLYPHS = HB_TAG ('H','l','u','w'), 295 /*8.0*/ HB_SCRIPT_HATRAN = HB_TAG ('H','a','t','r'), 296 /*8.0*/ HB_SCRIPT_MULTANI = HB_TAG ('M','u','l','t'), 297 /*8.0*/ HB_SCRIPT_OLD_HUNGARIAN = HB_TAG ('H','u','n','g'), 298 /*8.0*/ HB_SCRIPT_SIGNWRITING = HB_TAG ('S','g','n','w'), 299 300 /* 301 * Since 1.3.0 302 */ 303 /*9.0*/ HB_SCRIPT_ADLAM = HB_TAG ('A','d','l','m'), 304 /*9.0*/ HB_SCRIPT_BHAIKSUKI = HB_TAG ('B','h','k','s'), 305 /*9.0*/ HB_SCRIPT_MARCHEN = HB_TAG ('M','a','r','c'), 306 /*9.0*/ HB_SCRIPT_OSAGE = HB_TAG ('O','s','g','e'), 307 /*9.0*/ HB_SCRIPT_TANGUT = HB_TAG ('T','a','n','g'), 308 /*9.0*/ HB_SCRIPT_NEWA = HB_TAG ('N','e','w','a'), 309 310 /* 311 * Since 1.6.0 312 */ 313 /*10.0*/HB_SCRIPT_MASARAM_GONDI = HB_TAG ('G','o','n','m'), 314 /*10.0*/HB_SCRIPT_NUSHU = HB_TAG ('N','s','h','u'), 315 /*10.0*/HB_SCRIPT_SOYOMBO = HB_TAG ('S','o','y','o'), 316 /*10.0*/HB_SCRIPT_ZANABAZAR_SQUARE = HB_TAG ('Z','a','n','b'), 317 318 /* No script set. */ 319 HB_SCRIPT_INVALID = HB_TAG_NONE, 320 321 /* Dummy values to ensure any hb_tag_t value can be passed/stored as hb_script_t 322 * without risking undefined behavior. Include both a signed and unsigned max, 323 * since technically enums are int, and indeed, hb_script_t ends up being signed. 324 * See this thread for technicalities: 325 * 326 * http://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html 327 */ 328 _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX, /*< skip >*/ 329 _HB_SCRIPT_MAX_VALUE_SIGNED = HB_TAG_MAX_SIGNED /*< skip >*/ 330 331 } hb_script_t; 332 333 334 /* Script functions */ 335 336 HB_EXTERN hb_script_t 337 hb_script_from_iso15924_tag (hb_tag_t tag); 338 339 HB_EXTERN hb_script_t 340 hb_script_from_string (const char *str, int len); 341 342 HB_EXTERN hb_tag_t 343 hb_script_to_iso15924_tag (hb_script_t script); 344 345 HB_EXTERN hb_direction_t 346 hb_script_get_horizontal_direction (hb_script_t script); 347 348 349 /* User data */ 350 351 typedef struct hb_user_data_key_t { 352 /*< private >*/ 353 char unused; 354 } hb_user_data_key_t; 355 356 typedef void (*hb_destroy_func_t) (void *user_data); 357 358 359 /* Font features and variations. */ 360 361 typedef struct hb_feature_t { 362 hb_tag_t tag; 363 uint32_t value; 364 unsigned int start; 365 unsigned int end; 366 } hb_feature_t; 367 368 HB_EXTERN hb_bool_t 369 hb_feature_from_string (const char *str, int len, 370 hb_feature_t *feature); 371 372 HB_EXTERN void 373 hb_feature_to_string (hb_feature_t *feature, 374 char *buf, unsigned int size); 375 376 /** 377 * hb_variation_t: 378 * 379 * Since: 1.4.2 380 */ 381 typedef struct hb_variation_t { 382 hb_tag_t tag; 383 float value; 384 } hb_variation_t; 385 386 HB_EXTERN hb_bool_t 387 hb_variation_from_string (const char *str, int len, 388 hb_variation_t *variation); 389 390 HB_EXTERN void 391 hb_variation_to_string (hb_variation_t *variation, 392 char *buf, unsigned int size); 393 394 395 HB_END_DECLS 396 397 #endif /* HB_COMMON_H */ 398