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 defined(__GNUC__) && ((__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 defined(__GNUC__) && ((__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) (uint8_t)(((tag)>>24)&0xFF), (uint8_t)(((tag)>>16)&0xFF), (uint8_t)(((tag)>>8)&0xFF), (uint8_t)((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 */