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Diffstat (limited to 'thirdparty/harfbuzz/src/hb-common.h')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-common.h | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/thirdparty/harfbuzz/src/hb-common.h b/thirdparty/harfbuzz/src/hb-common.h new file mode 100644 index 0000000000..a97a5f5a04 --- /dev/null +++ b/thirdparty/harfbuzz/src/hb-common.h @@ -0,0 +1,513 @@ +/* + * Copyright © 2007,2008,2009 Red Hat, Inc. + * Copyright © 2011,2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_H_IN +#error "Include <hb.h> instead." +#endif + +#ifndef HB_COMMON_H +#define HB_COMMON_H + +#ifndef HB_EXTERN +#define HB_EXTERN extern +#endif + +#ifndef HB_BEGIN_DECLS +# ifdef __cplusplus +# define HB_BEGIN_DECLS extern "C" { +# define HB_END_DECLS } +# else /* !__cplusplus */ +# define HB_BEGIN_DECLS +# define HB_END_DECLS +# endif /* !__cplusplus */ +#endif + +#if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \ + defined (_sgi) || defined (__sun) || defined (sun) || \ + defined (__digital__) || defined (__HP_cc) +# include <inttypes.h> +#elif defined (_AIX) +# include <sys/inttypes.h> +#elif defined (_MSC_VER) && _MSC_VER < 1600 +/* VS 2010 (_MSC_VER 1600) has stdint.h */ +typedef __int8 int8_t; +typedef unsigned __int8 uint8_t; +typedef __int16 int16_t; +typedef unsigned __int16 uint16_t; +typedef __int32 int32_t; +typedef unsigned __int32 uint32_t; +typedef __int64 int64_t; +typedef unsigned __int64 uint64_t; +#elif defined (__KERNEL__) +# include <linux/types.h> +#else +# include <stdint.h> +#endif + +#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +#define HB_DEPRECATED __attribute__((__deprecated__)) +#elif defined(_MSC_VER) && (_MSC_VER >= 1300) +#define HB_DEPRECATED __declspec(deprecated) +#else +#define HB_DEPRECATED +#endif + +#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)) +#define HB_DEPRECATED_FOR(f) __attribute__((__deprecated__("Use '" #f "' instead"))) +#elif defined(_MSC_FULL_VER) && (_MSC_FULL_VER > 140050320) +#define HB_DEPRECATED_FOR(f) __declspec(deprecated("is deprecated. Use '" #f "' instead")) +#else +#define HB_DEPRECATED_FOR(f) HB_DEPRECATED +#endif + + +HB_BEGIN_DECLS + + +typedef int hb_bool_t; + +typedef uint32_t hb_codepoint_t; +typedef int32_t hb_position_t; +typedef uint32_t hb_mask_t; + +typedef union _hb_var_int_t { + uint32_t u32; + int32_t i32; + uint16_t u16[2]; + int16_t i16[2]; + uint8_t u8[4]; + int8_t i8[4]; +} hb_var_int_t; + + +/* hb_tag_t */ + +typedef uint32_t hb_tag_t; + +#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))) +#define HB_UNTAG(tag) (uint8_t)(((tag)>>24)&0xFF), (uint8_t)(((tag)>>16)&0xFF), (uint8_t)(((tag)>>8)&0xFF), (uint8_t)((tag)&0xFF) + +#define HB_TAG_NONE HB_TAG(0,0,0,0) +#define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff) +#define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff) + +/* len=-1 means str is NUL-terminated. */ +HB_EXTERN hb_tag_t +hb_tag_from_string (const char *str, int len); + +/* buf should have 4 bytes. */ +HB_EXTERN void +hb_tag_to_string (hb_tag_t tag, char *buf); + + +/** + * hb_direction_t: + * @HB_DIRECTION_INVALID: Initial, unset direction. + * @HB_DIRECTION_LTR: Text is set horizontally from left to right. + * @HB_DIRECTION_RTL: Text is set horizontally from right to left. + * @HB_DIRECTION_TTB: Text is set vertically from top to bottom. + * @HB_DIRECTION_BTT: Text is set vertically from bottom to top. + */ +typedef enum { + HB_DIRECTION_INVALID = 0, + HB_DIRECTION_LTR = 4, + HB_DIRECTION_RTL, + HB_DIRECTION_TTB, + HB_DIRECTION_BTT +} hb_direction_t; + +/* len=-1 means str is NUL-terminated */ +HB_EXTERN hb_direction_t +hb_direction_from_string (const char *str, int len); + +HB_EXTERN const char * +hb_direction_to_string (hb_direction_t direction); + +#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) +/* Direction must be valid for the following */ +#define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) +#define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) +#define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) +#define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) +#define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) + + +/* hb_language_t */ + +typedef const struct hb_language_impl_t *hb_language_t; + +HB_EXTERN hb_language_t +hb_language_from_string (const char *str, int len); + +HB_EXTERN const char * +hb_language_to_string (hb_language_t language); + +#define HB_LANGUAGE_INVALID ((hb_language_t) 0) + +HB_EXTERN hb_language_t +hb_language_get_default (void); + + +/* hb_script_t */ + +/* https://unicode.org/iso15924/ */ +/* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */ +/* Unicode Character Database property: Script (sc) */ +typedef enum +{ + /*1.1*/ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), + /*1.1*/ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), + /*5.0*/ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), + + /*1.1*/ HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'), + /*1.1*/ HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'), + /*1.1*/ HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'), + /*1.1*/ HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'), + /*1.1*/ HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'), + /*1.1*/ HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'), + /*1.1*/ HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'), + /*1.1*/ HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'), + /*1.1*/ HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'), + /*1.1*/ HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'), + /*1.1*/ HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'), + /*1.1*/ HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'), + /*1.1*/ HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'), + /*1.1*/ HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'), + /*1.1*/ HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'), + /*1.1*/ HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'), + /*1.1*/ HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'), + /*1.1*/ HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'), + /*1.1*/ HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'), + /*1.1*/ HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'), + /*1.1*/ HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'), + /*1.1*/ HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'), + + /*2.0*/ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), + + /*3.0*/ HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'), + /*3.0*/ HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'), + /*3.0*/ HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'), + /*3.0*/ HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'), + /*3.0*/ HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'), + /*3.0*/ HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'), + /*3.0*/ HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'), + /*3.0*/ HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'), + /*3.0*/ HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'), + /*3.0*/ HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'), + /*3.0*/ HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'), + /*3.0*/ HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'), + /*3.0*/ HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'), + /*3.0*/ HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'), + + /*3.1*/ HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'), + /*3.1*/ HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'), + /*3.1*/ HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'), + + /*3.2*/ HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'), + /*3.2*/ HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'), + /*3.2*/ HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'), + /*3.2*/ HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'), + + /*4.0*/ HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'), + /*4.0*/ HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'), + /*4.0*/ HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'), + /*4.0*/ HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'), + /*4.0*/ HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'), + /*4.0*/ HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'), + /*4.0*/ HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'), + + /*4.1*/ HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'), + /*4.1*/ HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'), + /*4.1*/ HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'), + /*4.1*/ HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'), + /*4.1*/ HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'), + /*4.1*/ HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'), + /*4.1*/ HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'), + /*4.1*/ HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'), + + /*5.0*/ HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'), + /*5.0*/ HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'), + /*5.0*/ HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'), + /*5.0*/ HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'), + /*5.0*/ HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'), + + /*5.1*/ HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'), + /*5.1*/ HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'), + /*5.1*/ HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'), + /*5.1*/ HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'), + /*5.1*/ HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'), + /*5.1*/ HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'), + /*5.1*/ HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'), + /*5.1*/ HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'), + /*5.1*/ HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'), + /*5.1*/ HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'), + /*5.1*/ HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'), + + /*5.2*/ HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'), + /*5.2*/ HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'), + /*5.2*/ HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'), + /*5.2*/ HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'), + /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'), + /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'), + /*5.2*/ HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'), + /*5.2*/ HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'), + /*5.2*/ HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'), + /*5.2*/ HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'), + /*5.2*/ HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'), + /*5.2*/ HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'), + /*5.2*/ HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'), + /*5.2*/ HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'), + /*5.2*/ HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'), + + /*6.0*/ HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'), + /*6.0*/ HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'), + /*6.0*/ HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'), + + /*6.1*/ HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'), + /*6.1*/ HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'), + /*6.1*/ HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'), + /*6.1*/ HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'), + /*6.1*/ HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'), + /*6.1*/ HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'), + /*6.1*/ HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'), + + /* + * Since: 0.9.30 + */ + /*7.0*/ HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'), + /*7.0*/ HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'), + /*7.0*/ HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'), + /*7.0*/ HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'), + /*7.0*/ HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'), + /*7.0*/ HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'), + /*7.0*/ HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'), + /*7.0*/ HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'), + /*7.0*/ HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'), + /*7.0*/ HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'), + /*7.0*/ HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'), + /*7.0*/ HB_SCRIPT_MODI = HB_TAG ('M','o','d','i'), + /*7.0*/ HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'), + /*7.0*/ HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'), + /*7.0*/ HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'), + /*7.0*/ HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'), + /*7.0*/ HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'), + /*7.0*/ HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'), + /*7.0*/ HB_SCRIPT_PAU_CIN_HAU = HB_TAG ('P','a','u','c'), + /*7.0*/ HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'), + /*7.0*/ HB_SCRIPT_SIDDHAM = HB_TAG ('S','i','d','d'), + /*7.0*/ HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'), + /*7.0*/ HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'), + + /*8.0*/ HB_SCRIPT_AHOM = HB_TAG ('A','h','o','m'), + /*8.0*/ HB_SCRIPT_ANATOLIAN_HIEROGLYPHS = HB_TAG ('H','l','u','w'), + /*8.0*/ HB_SCRIPT_HATRAN = HB_TAG ('H','a','t','r'), + /*8.0*/ HB_SCRIPT_MULTANI = HB_TAG ('M','u','l','t'), + /*8.0*/ HB_SCRIPT_OLD_HUNGARIAN = HB_TAG ('H','u','n','g'), + /*8.0*/ HB_SCRIPT_SIGNWRITING = HB_TAG ('S','g','n','w'), + + /* + * Since 1.3.0 + */ + /*9.0*/ HB_SCRIPT_ADLAM = HB_TAG ('A','d','l','m'), + /*9.0*/ HB_SCRIPT_BHAIKSUKI = HB_TAG ('B','h','k','s'), + /*9.0*/ HB_SCRIPT_MARCHEN = HB_TAG ('M','a','r','c'), + /*9.0*/ HB_SCRIPT_OSAGE = HB_TAG ('O','s','g','e'), + /*9.0*/ HB_SCRIPT_TANGUT = HB_TAG ('T','a','n','g'), + /*9.0*/ HB_SCRIPT_NEWA = HB_TAG ('N','e','w','a'), + + /* + * Since 1.6.0 + */ + /*10.0*/HB_SCRIPT_MASARAM_GONDI = HB_TAG ('G','o','n','m'), + /*10.0*/HB_SCRIPT_NUSHU = HB_TAG ('N','s','h','u'), + /*10.0*/HB_SCRIPT_SOYOMBO = HB_TAG ('S','o','y','o'), + /*10.0*/HB_SCRIPT_ZANABAZAR_SQUARE = HB_TAG ('Z','a','n','b'), + + /* + * Since 1.8.0 + */ + /*11.0*/HB_SCRIPT_DOGRA = HB_TAG ('D','o','g','r'), + /*11.0*/HB_SCRIPT_GUNJALA_GONDI = HB_TAG ('G','o','n','g'), + /*11.0*/HB_SCRIPT_HANIFI_ROHINGYA = HB_TAG ('R','o','h','g'), + /*11.0*/HB_SCRIPT_MAKASAR = HB_TAG ('M','a','k','a'), + /*11.0*/HB_SCRIPT_MEDEFAIDRIN = HB_TAG ('M','e','d','f'), + /*11.0*/HB_SCRIPT_OLD_SOGDIAN = HB_TAG ('S','o','g','o'), + /*11.0*/HB_SCRIPT_SOGDIAN = HB_TAG ('S','o','g','d'), + + /* + * Since 2.4.0 + */ + /*12.0*/HB_SCRIPT_ELYMAIC = HB_TAG ('E','l','y','m'), + /*12.0*/HB_SCRIPT_NANDINAGARI = HB_TAG ('N','a','n','d'), + /*12.0*/HB_SCRIPT_NYIAKENG_PUACHUE_HMONG = HB_TAG ('H','m','n','p'), + /*12.0*/HB_SCRIPT_WANCHO = HB_TAG ('W','c','h','o'), + + /* + * Since 2.6.7 + */ + /*13.0*/HB_SCRIPT_CHORASMIAN = HB_TAG ('C','h','r','s'), + /*13.0*/HB_SCRIPT_DIVES_AKURU = HB_TAG ('D','i','a','k'), + /*13.0*/HB_SCRIPT_KHITAN_SMALL_SCRIPT = HB_TAG ('K','i','t','s'), + /*13.0*/HB_SCRIPT_YEZIDI = HB_TAG ('Y','e','z','i'), + + /* No script set. */ + HB_SCRIPT_INVALID = HB_TAG_NONE, + + /* Dummy values to ensure any hb_tag_t value can be passed/stored as hb_script_t + * without risking undefined behavior. We have two, for historical reasons. + * HB_TAG_MAX used to be unsigned, but that was invalid Ansi C, so was changed + * to _HB_SCRIPT_MAX_VALUE to be equal to HB_TAG_MAX_SIGNED as well. + * + * See this thread for technicalities: + * + * https://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html + */ + _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX_SIGNED, /*< skip >*/ + _HB_SCRIPT_MAX_VALUE_SIGNED = HB_TAG_MAX_SIGNED /*< skip >*/ + +} hb_script_t; + + +/* Script functions */ + +HB_EXTERN hb_script_t +hb_script_from_iso15924_tag (hb_tag_t tag); + +HB_EXTERN hb_script_t +hb_script_from_string (const char *str, int len); + +HB_EXTERN hb_tag_t +hb_script_to_iso15924_tag (hb_script_t script); + +HB_EXTERN hb_direction_t +hb_script_get_horizontal_direction (hb_script_t script); + + +/* User data */ + +typedef struct hb_user_data_key_t { + /*< private >*/ + char unused; +} hb_user_data_key_t; + +typedef void (*hb_destroy_func_t) (void *user_data); + + +/* Font features and variations. */ + +/** + * HB_FEATURE_GLOBAL_START + * + * Since: 2.0.0 + */ +#define HB_FEATURE_GLOBAL_START 0 +/** + * HB_FEATURE_GLOBAL_END + * + * Since: 2.0.0 + */ +#define HB_FEATURE_GLOBAL_END ((unsigned int) -1) + +/** + * hb_feature_t: + * @tag: a feature tag + * @value: 0 disables the feature, non-zero (usually 1) enables the feature. + * For features implemented as lookup type 3 (like 'salt') the @value is a one + * based index into the alternates. + * @start: the cluster to start applying this feature setting (inclusive). + * @end: the cluster to end applying this feature setting (exclusive). + * + * The #hb_feature_t is the structure that holds information about requested + * feature application. The feature will be applied with the given value to all + * glyphs which are in clusters between @start (inclusive) and @end (exclusive). + * Setting start to @HB_FEATURE_GLOBAL_START and end to @HB_FEATURE_GLOBAL_END + * specifies that the feature always applies to the entire buffer. + */ +typedef struct hb_feature_t { + hb_tag_t tag; + uint32_t value; + unsigned int start; + unsigned int end; +} hb_feature_t; + +HB_EXTERN hb_bool_t +hb_feature_from_string (const char *str, int len, + hb_feature_t *feature); + +HB_EXTERN void +hb_feature_to_string (hb_feature_t *feature, + char *buf, unsigned int size); + +/** + * hb_variation_t: + * + * Since: 1.4.2 + */ +typedef struct hb_variation_t { + hb_tag_t tag; + float value; +} hb_variation_t; + +HB_EXTERN hb_bool_t +hb_variation_from_string (const char *str, int len, + hb_variation_t *variation); + +HB_EXTERN void +hb_variation_to_string (hb_variation_t *variation, + char *buf, unsigned int size); + +/** + * hb_color_t: + * + * Data type for holding color values. + * + * Since: 2.1.0 + */ +typedef uint32_t hb_color_t; + +#define HB_COLOR(b,g,r,a) ((hb_color_t) HB_TAG ((b),(g),(r),(a))) + +HB_EXTERN uint8_t +hb_color_get_alpha (hb_color_t color); +#define hb_color_get_alpha(color) ((color) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_red (hb_color_t color); +#define hb_color_get_red(color) (((color) >> 8) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_green (hb_color_t color); +#define hb_color_get_green(color) (((color) >> 16) & 0xFF) + +HB_EXTERN uint8_t +hb_color_get_blue (hb_color_t color); +#define hb_color_get_blue(color) (((color) >> 24) & 0xFF) + +HB_END_DECLS + +#endif /* HB_COMMON_H */ |