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 | |