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Diffstat (limited to 'gfx/harfbuzz/src/hb-common.h')
-rw-r--r--gfx/harfbuzz/src/hb-common.h1285
1 files changed, 928 insertions, 357 deletions
diff --git a/gfx/harfbuzz/src/hb-common.h b/gfx/harfbuzz/src/hb-common.h
index 2e17d4bb0d..1c41444ffa 100644
--- a/gfx/harfbuzz/src/hb-common.h
+++ b/gfx/harfbuzz/src/hb-common.h
@@ -1,357 +1,928 @@
-/*
- * 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_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 (HB_DONT_DEFINE_STDINT)
-
-#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>
-#else
-# include <stdint.h>
-#endif
-
-#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)((((uint8_t)(c1))<<24)|(((uint8_t)(c2))<<16)|(((uint8_t)(c3))<<8)|((uint8_t)(c4))))
-#define HB_UNTAG(tag) ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag))
-
-#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) NULL)
-
-HB_EXTERN hb_language_t
-hb_language_get_default (void);
-
-
-/* hb_script_t */
-
-/* http://unicode.org/iso15924/ */
-/* http://goo.gl/x9ilM */
-/* 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'),
-
- /* 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. Include both a signed and unsigned max,
- * since technically enums are int, and indeed, hb_script_t ends up being signed.
- * See this thread for technicalities:
- *
- * http://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html
- */
- _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX, /*< 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);
-
-
-HB_END_DECLS
-
-#endif /* HB_COMMON_H */
+/*
+ * 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
+ */
+
+#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
+#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
+
+/**
+ * hb_bool_t:
+ *
+ * Data type for booleans.
+ *
+ **/
+typedef int hb_bool_t;
+
+/**
+ * hb_codepoint_t:
+ *
+ * Data type for holding Unicode codepoints. Also
+ * used to hold glyph IDs.
+ *
+ **/
+typedef uint32_t hb_codepoint_t;
+/**
+ * hb_position_t:
+ *
+ * Data type for holding a single coordinate value.
+ * Contour points and other multi-dimensional data are
+ * stored as tuples of #hb_position_t's.
+ *
+ **/
+typedef int32_t hb_position_t;
+/**
+ * hb_mask_t:
+ *
+ * Data type for bitmasks.
+ *
+ **/
+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;
+
+typedef union _hb_var_num_t {
+ float f;
+ uint32_t u32;
+ int32_t i32;
+ uint16_t u16[2];
+ int16_t i16[2];
+ uint8_t u8[4];
+ int8_t i8[4];
+} hb_var_num_t;
+
+
+/* hb_tag_t */
+
+/**
+ * hb_tag_t:
+ *
+ * Data type for tag identifiers. Tags are four
+ * byte integers, each byte representing a character.
+ *
+ * Tags are used to identify tables, design-variation axes,
+ * scripts, languages, font features, and baselines with
+ * human-readable names.
+ *
+ **/
+typedef uint32_t hb_tag_t;
+
+/**
+ * HB_TAG:
+ * @c1: 1st character of the tag
+ * @c2: 2nd character of the tag
+ * @c3: 3rd character of the tag
+ * @c4: 4th character of the tag
+ *
+ * Constructs an #hb_tag_t from four character literals.
+ *
+ **/
+#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)))
+
+/**
+ * HB_UNTAG:
+ * @tag: an #hb_tag_t
+ *
+ * Extracts four character literals from an #hb_tag_t.
+ *
+ * Since: 0.6.0
+ *
+ **/
+#define HB_UNTAG(tag) (uint8_t)(((tag)>>24)&0xFF), (uint8_t)(((tag)>>16)&0xFF), (uint8_t)(((tag)>>8)&0xFF), (uint8_t)((tag)&0xFF)
+
+/**
+ * HB_TAG_NONE:
+ *
+ * Unset #hb_tag_t.
+ */
+#define HB_TAG_NONE HB_TAG(0,0,0,0)
+/**
+ * HB_TAG_MAX:
+ *
+ * Maximum possible unsigned #hb_tag_t.
+ *
+ * Since: 0.9.26
+ */
+#define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff)
+/**
+ * HB_TAG_MAX_SIGNED:
+ *
+ * Maximum possible signed #hb_tag_t.
+ *
+ * Since: 0.9.33
+ */
+#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.
+ *
+ * The direction of a text segment or buffer.
+ *
+ * A segment can also be tested for horizontal or vertical
+ * orientation (irrespective of specific direction) with
+ * HB_DIRECTION_IS_HORIZONTAL() or HB_DIRECTION_IS_VERTICAL().
+ *
+ */
+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);
+
+/**
+ * HB_DIRECTION_IS_VALID:
+ * @dir: #hb_direction_t to test
+ *
+ * Tests whether a text direction is valid.
+ *
+ **/
+#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4)
+/* Direction must be valid for the following */
+/**
+ * HB_DIRECTION_IS_HORIZONTAL:
+ * @dir: #hb_direction_t to test
+ *
+ * Tests whether a text direction is horizontal. Requires
+ * that the direction be valid.
+ *
+ **/
+#define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4)
+/**
+ * HB_DIRECTION_IS_VERTICAL:
+ * @dir: #hb_direction_t to test
+ *
+ * Tests whether a text direction is vertical. Requires
+ * that the direction be valid.
+ *
+ **/
+#define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6)
+/**
+ * HB_DIRECTION_IS_FORWARD:
+ * @dir: #hb_direction_t to test
+ *
+ * Tests whether a text direction moves forward (from left to right, or from
+ * top to bottom). Requires that the direction be valid.
+ *
+ **/
+#define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4)
+/**
+ * HB_DIRECTION_IS_BACKWARD:
+ * @dir: #hb_direction_t to test
+ *
+ * Tests whether a text direction moves backward (from right to left, or from
+ * bottom to top). Requires that the direction be valid.
+ *
+ **/
+#define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5)
+/**
+ * HB_DIRECTION_REVERSE:
+ * @dir: #hb_direction_t to reverse
+ *
+ * Reverses a text direction. Requires that the direction
+ * be valid.
+ *
+ **/
+#define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1))
+
+
+/* hb_language_t */
+
+/**
+ * hb_language_t:
+ *
+ * Data type for languages. Each #hb_language_t corresponds to a BCP 47
+ * language tag.
+ *
+ */
+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);
+
+/**
+ * HB_LANGUAGE_INVALID:
+ *
+ * An unset #hb_language_t.
+ *
+ * Since: 0.6.0
+ */
+#define HB_LANGUAGE_INVALID ((hb_language_t) 0)
+
+HB_EXTERN hb_language_t
+hb_language_get_default (void);
+
+HB_EXTERN hb_bool_t
+hb_language_matches (hb_language_t language,
+ hb_language_t specific);
+
+/**
+ * hb_script_t:
+ * @HB_SCRIPT_COMMON: `Zyyy`
+ * @HB_SCRIPT_INHERITED: `Zinh`
+ * @HB_SCRIPT_UNKNOWN: `Zzzz`
+ * @HB_SCRIPT_ARABIC: `Arab`
+ * @HB_SCRIPT_ARMENIAN: `Armn`
+ * @HB_SCRIPT_BENGALI: `Beng`
+ * @HB_SCRIPT_CYRILLIC: `Cyrl`
+ * @HB_SCRIPT_DEVANAGARI: `Deva`
+ * @HB_SCRIPT_GEORGIAN: `Geor`
+ * @HB_SCRIPT_GREEK: `Grek`
+ * @HB_SCRIPT_GUJARATI: `Gujr`
+ * @HB_SCRIPT_GURMUKHI: `Guru`
+ * @HB_SCRIPT_HANGUL: `Hang`
+ * @HB_SCRIPT_HAN: `Hani`
+ * @HB_SCRIPT_HEBREW: `Hebr`
+ * @HB_SCRIPT_HIRAGANA: `Hira`
+ * @HB_SCRIPT_KANNADA: `Knda`
+ * @HB_SCRIPT_KATAKANA: `Kana`
+ * @HB_SCRIPT_LAO: `Laoo`
+ * @HB_SCRIPT_LATIN: `Latn`
+ * @HB_SCRIPT_MALAYALAM: `Mlym`
+ * @HB_SCRIPT_ORIYA: `Orya`
+ * @HB_SCRIPT_TAMIL: `Taml`
+ * @HB_SCRIPT_TELUGU: `Telu`
+ * @HB_SCRIPT_THAI: `Thai`
+ * @HB_SCRIPT_TIBETAN: `Tibt`
+ * @HB_SCRIPT_BOPOMOFO: `Bopo`
+ * @HB_SCRIPT_BRAILLE: `Brai`
+ * @HB_SCRIPT_CANADIAN_SYLLABICS: `Cans`
+ * @HB_SCRIPT_CHEROKEE: `Cher`
+ * @HB_SCRIPT_ETHIOPIC: `Ethi`
+ * @HB_SCRIPT_KHMER: `Khmr`
+ * @HB_SCRIPT_MONGOLIAN: `Mong`
+ * @HB_SCRIPT_MYANMAR: `Mymr`
+ * @HB_SCRIPT_OGHAM: `Ogam`
+ * @HB_SCRIPT_RUNIC: `Runr`
+ * @HB_SCRIPT_SINHALA: `Sinh`
+ * @HB_SCRIPT_SYRIAC: `Syrc`
+ * @HB_SCRIPT_THAANA: `Thaa`
+ * @HB_SCRIPT_YI: `Yiii`
+ * @HB_SCRIPT_DESERET: `Dsrt`
+ * @HB_SCRIPT_GOTHIC: `Goth`
+ * @HB_SCRIPT_OLD_ITALIC: `Ital`
+ * @HB_SCRIPT_BUHID: `Buhd`
+ * @HB_SCRIPT_HANUNOO: `Hano`
+ * @HB_SCRIPT_TAGALOG: `Tglg`
+ * @HB_SCRIPT_TAGBANWA: `Tagb`
+ * @HB_SCRIPT_CYPRIOT: `Cprt`
+ * @HB_SCRIPT_LIMBU: `Limb`
+ * @HB_SCRIPT_LINEAR_B: `Linb`
+ * @HB_SCRIPT_OSMANYA: `Osma`
+ * @HB_SCRIPT_SHAVIAN: `Shaw`
+ * @HB_SCRIPT_TAI_LE: `Tale`
+ * @HB_SCRIPT_UGARITIC: `Ugar`
+ * @HB_SCRIPT_BUGINESE: `Bugi`
+ * @HB_SCRIPT_COPTIC: `Copt`
+ * @HB_SCRIPT_GLAGOLITIC: `Glag`
+ * @HB_SCRIPT_KHAROSHTHI: `Khar`
+ * @HB_SCRIPT_NEW_TAI_LUE: `Talu`
+ * @HB_SCRIPT_OLD_PERSIAN: `Xpeo`
+ * @HB_SCRIPT_SYLOTI_NAGRI: `Sylo`
+ * @HB_SCRIPT_TIFINAGH: `Tfng`
+ * @HB_SCRIPT_BALINESE: `Bali`
+ * @HB_SCRIPT_CUNEIFORM: `Xsux`
+ * @HB_SCRIPT_NKO: `Nkoo`
+ * @HB_SCRIPT_PHAGS_PA: `Phag`
+ * @HB_SCRIPT_PHOENICIAN: `Phnx`
+ * @HB_SCRIPT_CARIAN: `Cari`
+ * @HB_SCRIPT_CHAM: `Cham`
+ * @HB_SCRIPT_KAYAH_LI: `Kali`
+ * @HB_SCRIPT_LEPCHA: `Lepc`
+ * @HB_SCRIPT_LYCIAN: `Lyci`
+ * @HB_SCRIPT_LYDIAN: `Lydi`
+ * @HB_SCRIPT_OL_CHIKI: `Olck`
+ * @HB_SCRIPT_REJANG: `Rjng`
+ * @HB_SCRIPT_SAURASHTRA: `Saur`
+ * @HB_SCRIPT_SUNDANESE: `Sund`
+ * @HB_SCRIPT_VAI: `Vaii`
+ * @HB_SCRIPT_AVESTAN: `Avst`
+ * @HB_SCRIPT_BAMUM: `Bamu`
+ * @HB_SCRIPT_EGYPTIAN_HIEROGLYPHS: `Egyp`
+ * @HB_SCRIPT_IMPERIAL_ARAMAIC: `Armi`
+ * @HB_SCRIPT_INSCRIPTIONAL_PAHLAVI: `Phli`
+ * @HB_SCRIPT_INSCRIPTIONAL_PARTHIAN: `Prti`
+ * @HB_SCRIPT_JAVANESE: `Java`
+ * @HB_SCRIPT_KAITHI: `Kthi`
+ * @HB_SCRIPT_LISU: `Lisu`
+ * @HB_SCRIPT_MEETEI_MAYEK: `Mtei`
+ * @HB_SCRIPT_OLD_SOUTH_ARABIAN: `Sarb`
+ * @HB_SCRIPT_OLD_TURKIC: `Orkh`
+ * @HB_SCRIPT_SAMARITAN: `Samr`
+ * @HB_SCRIPT_TAI_THAM: `Lana`
+ * @HB_SCRIPT_TAI_VIET: `Tavt`
+ * @HB_SCRIPT_BATAK: `Batk`
+ * @HB_SCRIPT_BRAHMI: `Brah`
+ * @HB_SCRIPT_MANDAIC: `Mand`
+ * @HB_SCRIPT_CHAKMA: `Cakm`
+ * @HB_SCRIPT_MEROITIC_CURSIVE: `Merc`
+ * @HB_SCRIPT_MEROITIC_HIEROGLYPHS: `Mero`
+ * @HB_SCRIPT_MIAO: `Plrd`
+ * @HB_SCRIPT_SHARADA: `Shrd`
+ * @HB_SCRIPT_SORA_SOMPENG: `Sora`
+ * @HB_SCRIPT_TAKRI: `Takr`
+ * @HB_SCRIPT_BASSA_VAH: `Bass`, Since: 0.9.30
+ * @HB_SCRIPT_CAUCASIAN_ALBANIAN: `Aghb`, Since: 0.9.30
+ * @HB_SCRIPT_DUPLOYAN: `Dupl`, Since: 0.9.30
+ * @HB_SCRIPT_ELBASAN: `Elba`, Since: 0.9.30
+ * @HB_SCRIPT_GRANTHA: `Gran`, Since: 0.9.30
+ * @HB_SCRIPT_KHOJKI: `Khoj`, Since: 0.9.30
+ * @HB_SCRIPT_KHUDAWADI: `Sind`, Since: 0.9.30
+ * @HB_SCRIPT_LINEAR_A: `Lina`, Since: 0.9.30
+ * @HB_SCRIPT_MAHAJANI: `Mahj`, Since: 0.9.30
+ * @HB_SCRIPT_MANICHAEAN: `Mani`, Since: 0.9.30
+ * @HB_SCRIPT_MENDE_KIKAKUI: `Mend`, Since: 0.9.30
+ * @HB_SCRIPT_MODI: `Modi`, Since: 0.9.30
+ * @HB_SCRIPT_MRO: `Mroo`, Since: 0.9.30
+ * @HB_SCRIPT_NABATAEAN: `Nbat`, Since: 0.9.30
+ * @HB_SCRIPT_OLD_NORTH_ARABIAN: `Narb`, Since: 0.9.30
+ * @HB_SCRIPT_OLD_PERMIC: `Perm`, Since: 0.9.30
+ * @HB_SCRIPT_PAHAWH_HMONG: `Hmng`, Since: 0.9.30
+ * @HB_SCRIPT_PALMYRENE: `Palm`, Since: 0.9.30
+ * @HB_SCRIPT_PAU_CIN_HAU: `Pauc`, Since: 0.9.30
+ * @HB_SCRIPT_PSALTER_PAHLAVI: `Phlp`, Since: 0.9.30
+ * @HB_SCRIPT_SIDDHAM: `Sidd`, Since: 0.9.30
+ * @HB_SCRIPT_TIRHUTA: `Tirh`, Since: 0.9.30
+ * @HB_SCRIPT_WARANG_CITI: `Wara`, Since: 0.9.30
+ * @HB_SCRIPT_AHOM: `Ahom`, Since: 0.9.30
+ * @HB_SCRIPT_ANATOLIAN_HIEROGLYPHS: `Hluw`, Since: 0.9.30
+ * @HB_SCRIPT_HATRAN: `Hatr`, Since: 0.9.30
+ * @HB_SCRIPT_MULTANI: `Mult`, Since: 0.9.30
+ * @HB_SCRIPT_OLD_HUNGARIAN: `Hung`, Since: 0.9.30
+ * @HB_SCRIPT_SIGNWRITING: `Sgnw`, Since: 0.9.30
+ * @HB_SCRIPT_ADLAM: `Adlm`, Since: 1.3.0
+ * @HB_SCRIPT_BHAIKSUKI: `Bhks`, Since: 1.3.0
+ * @HB_SCRIPT_MARCHEN: `Marc`, Since: 1.3.0
+ * @HB_SCRIPT_OSAGE: `Osge`, Since: 1.3.0
+ * @HB_SCRIPT_TANGUT: `Tang`, Since: 1.3.0
+ * @HB_SCRIPT_NEWA: `Newa`, Since: 1.3.0
+ * @HB_SCRIPT_MASARAM_GONDI: `Gonm`, Since: 1.6.0
+ * @HB_SCRIPT_NUSHU: `Nshu`, Since: 1.6.0
+ * @HB_SCRIPT_SOYOMBO: `Soyo`, Since: 1.6.0
+ * @HB_SCRIPT_ZANABAZAR_SQUARE: `Zanb`, Since: 1.6.0
+ * @HB_SCRIPT_DOGRA: `Dogr`, Since: 1.8.0
+ * @HB_SCRIPT_GUNJALA_GONDI: `Gong`, Since: 1.8.0
+ * @HB_SCRIPT_HANIFI_ROHINGYA: `Rohg`, Since: 1.8.0
+ * @HB_SCRIPT_MAKASAR: `Maka`, Since: 1.8.0
+ * @HB_SCRIPT_MEDEFAIDRIN: `Medf`, Since: 1.8.0
+ * @HB_SCRIPT_OLD_SOGDIAN: `Sogo`, Since: 1.8.0
+ * @HB_SCRIPT_SOGDIAN: `Sogd`, Since: 1.8.0
+ * @HB_SCRIPT_ELYMAIC: `Elym`, Since: 2.4.0
+ * @HB_SCRIPT_NANDINAGARI: `Nand`, Since: 2.4.0
+ * @HB_SCRIPT_NYIAKENG_PUACHUE_HMONG: `Hmnp`, Since: 2.4.0
+ * @HB_SCRIPT_WANCHO: `Wcho`, Since: 2.4.0
+ * @HB_SCRIPT_CHORASMIAN: `Chrs`, Since: 2.6.7
+ * @HB_SCRIPT_DIVES_AKURU: `Diak`, Since: 2.6.7
+ * @HB_SCRIPT_KHITAN_SMALL_SCRIPT: `Kits`, Since: 2.6.7
+ * @HB_SCRIPT_YEZIDI: `Yezi`, Since: 2.6.7
+ * @HB_SCRIPT_CYPRO_MINOAN: `Cpmn`, Since: 3.0.0
+ * @HB_SCRIPT_OLD_UYGHUR: `Ougr`, Since: 3.0.0
+ * @HB_SCRIPT_TANGSA: `Tnsa`, Since: 3.0.0
+ * @HB_SCRIPT_TOTO: `Toto`, Since: 3.0.0
+ * @HB_SCRIPT_VITHKUQI: `Vith`, Since: 3.0.0
+ * @HB_SCRIPT_MATH: `Zmth`, Since: 3.4.0
+ * @HB_SCRIPT_KAWI: `Kawi`, Since: 5.2.0
+ * @HB_SCRIPT_NAG_MUNDARI: `Nagm`, Since: 5.2.0
+ * @HB_SCRIPT_INVALID: No script set
+ *
+ * Data type for scripts. Each #hb_script_t's value is an #hb_tag_t corresponding
+ * to the four-letter values defined by [ISO 15924](https://unicode.org/iso15924/).
+ *
+ * See also the Script (sc) property of the Unicode Character Database.
+ *
+ **/
+
+/* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */
+typedef enum
+{
+ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), /*1.1*/
+ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), /*1.1*/
+ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), /*5.0*/
+
+ 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'), /*1.1*/
+
+ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), /*2.0*/
+
+ 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'), /*3.0*/
+
+ 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'), /*3.1*/
+
+ 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'), /*3.2*/
+
+ 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'), /*4.0*/
+
+ 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'), /*4.1*/
+
+ 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'), /*5.0*/
+
+ 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'), /*5.1*/
+
+ 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'), /*5.2*/
+
+ 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'), /*6.0*/
+
+ 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'), /*6.1*/
+
+ /*
+ * Since: 0.9.30
+ */
+ 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'), /*7.0*/
+
+ 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'), /*8.0*/
+
+ /*
+ * Since 1.3.0
+ */
+ 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'), /*9.0*/
+
+ /*
+ * Since 1.6.0
+ */
+ 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'), /*10.0*/
+
+ /*
+ * Since 1.8.0
+ */
+ 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'), /*11.0*/
+
+ /*
+ * Since 2.4.0
+ */
+ 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'), /*12.0*/
+
+ /*
+ * Since 2.6.7
+ */
+ 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'), /*13.0*/
+
+ /*
+ * Since 3.0.0
+ */
+ HB_SCRIPT_CYPRO_MINOAN = HB_TAG ('C','p','m','n'), /*14.0*/
+ HB_SCRIPT_OLD_UYGHUR = HB_TAG ('O','u','g','r'), /*14.0*/
+ HB_SCRIPT_TANGSA = HB_TAG ('T','n','s','a'), /*14.0*/
+ HB_SCRIPT_TOTO = HB_TAG ('T','o','t','o'), /*14.0*/
+ HB_SCRIPT_VITHKUQI = HB_TAG ('V','i','t','h'), /*14.0*/
+
+ /*
+ * Since 3.4.0
+ */
+ HB_SCRIPT_MATH = HB_TAG ('Z','m','t','h'),
+
+ /*
+ * Since 5.2.0
+ */
+ HB_SCRIPT_KAWI = HB_TAG ('K','a','w','i'), /*15.0*/
+ HB_SCRIPT_NAG_MUNDARI = HB_TAG ('N','a','g','m'), /*15.0*/
+
+ /* No script set. */
+ HB_SCRIPT_INVALID = HB_TAG_NONE,
+
+ /*< private >*/
+
+ /* 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 */
+
+/**
+ * hb_user_data_key_t:
+ *
+ * Data structure for holding user-data keys.
+ *
+ **/
+typedef struct hb_user_data_key_t {
+ /*< private >*/
+ char unused;
+} hb_user_data_key_t;
+
+/**
+ * hb_destroy_func_t:
+ * @user_data: the data to be destroyed
+ *
+ * A virtual method for destroy user-data callbacks.
+ *
+ */
+typedef void (*hb_destroy_func_t) (void *user_data);
+
+
+/* Font features and variations. */
+
+/**
+ * HB_FEATURE_GLOBAL_START:
+ *
+ * Special setting for #hb_feature_t.start to apply the feature from the start
+ * of the buffer.
+ *
+ * Since: 2.0.0
+ */
+#define HB_FEATURE_GLOBAL_START 0
+
+/**
+ * HB_FEATURE_GLOBAL_END:
+ *
+ * Special setting for #hb_feature_t.end to apply the feature from to the end
+ * of the buffer.
+ *
+ * Since: 2.0.0
+ */
+#define HB_FEATURE_GLOBAL_END ((unsigned int) -1)
+
+/**
+ * hb_feature_t:
+ * @tag: The #hb_tag_t tag of the feature
+ * @value: The value of the feature. 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:
+ * @tag: The #hb_tag_t tag of the variation-axis name
+ * @value: The value of the variation axis
+ *
+ * Data type for holding variation data. Registered OpenType
+ * variation-axis tags are listed in
+ * [OpenType Axis Tag Registry](https://docs.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg).
+ *
+ * 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. Colors are eight bits per
+ * channel RGB plus alpha transparency.
+ *
+ * Since: 2.1.0
+ */
+typedef uint32_t hb_color_t;
+
+/**
+ * HB_COLOR:
+ * @b: blue channel value
+ * @g: green channel value
+ * @r: red channel value
+ * @a: alpha channel value
+ *
+ * Constructs an #hb_color_t from four integers.
+ *
+ * Since: 2.1.0
+ */
+#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_glyph_extents_t:
+ * @x_bearing: Distance from the x-origin to the left extremum of the glyph.
+ * @y_bearing: Distance from the top extremum of the glyph to the y-origin.
+ * @width: Distance from the left extremum of the glyph to the right extremum.
+ * @height: Distance from the top extremum of the glyph to the bottom extremum.
+ *
+ * Glyph extent values, measured in font units.
+ *
+ * Note that @height is negative, in coordinate systems that grow up.
+ **/
+typedef struct hb_glyph_extents_t {
+ hb_position_t x_bearing;
+ hb_position_t y_bearing;
+ hb_position_t width;
+ hb_position_t height;
+} hb_glyph_extents_t;
+
+/**
+ * hb_font_t:
+ *
+ * Data type for holding fonts.
+ *
+ */
+typedef struct hb_font_t hb_font_t;
+
+HB_END_DECLS
+
+#endif /* HB_COMMON_H */
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