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Diffstat (limited to 'gfx/harfbuzz/src/hb-unicode.h')
| -rw-r--r-- | gfx/harfbuzz/src/hb-unicode.h | 643 |
1 files changed, 643 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-unicode.h b/gfx/harfbuzz/src/hb-unicode.h new file mode 100644 index 0000000000..5b5c45cae3 --- /dev/null +++ b/gfx/harfbuzz/src/hb-unicode.h @@ -0,0 +1,643 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2011 Codethink Limited + * 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 + * Codethink Author(s): Ryan Lortie + * Google Author(s): Behdad Esfahbod + */ + +#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) +#error "Include <hb.h> instead." +#endif + +#ifndef HB_UNICODE_H +#define HB_UNICODE_H + +#include "hb-common.h" + +HB_BEGIN_DECLS + + +/** + * HB_UNICODE_MAX: + * + * Maximum valid Unicode code point. + * + * Since: 1.9.0 + **/ +#define HB_UNICODE_MAX 0x10FFFFu + + +/** + * hb_unicode_general_category_t: + * @HB_UNICODE_GENERAL_CATEGORY_CONTROL: [Cc] + * @HB_UNICODE_GENERAL_CATEGORY_FORMAT: [Cf] + * @HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED: [Cn] + * @HB_UNICODE_GENERAL_CATEGORY_PRIVATE_USE: [Co] + * @HB_UNICODE_GENERAL_CATEGORY_SURROGATE: [Cs] + * @HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER: [Ll] + * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER: [Lm] + * @HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER: [Lo] + * @HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER: [Lt] + * @HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER: [Lu] + * @HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK: [Mc] + * @HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK: [Me] + * @HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK: [Mn] + * @HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER: [Nd] + * @HB_UNICODE_GENERAL_CATEGORY_LETTER_NUMBER: [Nl] + * @HB_UNICODE_GENERAL_CATEGORY_OTHER_NUMBER: [No] + * @HB_UNICODE_GENERAL_CATEGORY_CONNECT_PUNCTUATION: [Pc] + * @HB_UNICODE_GENERAL_CATEGORY_DASH_PUNCTUATION: [Pd] + * @HB_UNICODE_GENERAL_CATEGORY_CLOSE_PUNCTUATION: [Pe] + * @HB_UNICODE_GENERAL_CATEGORY_FINAL_PUNCTUATION: [Pf] + * @HB_UNICODE_GENERAL_CATEGORY_INITIAL_PUNCTUATION: [Pi] + * @HB_UNICODE_GENERAL_CATEGORY_OTHER_PUNCTUATION: [Po] + * @HB_UNICODE_GENERAL_CATEGORY_OPEN_PUNCTUATION: [Ps] + * @HB_UNICODE_GENERAL_CATEGORY_CURRENCY_SYMBOL: [Sc] + * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_SYMBOL: [Sk] + * @HB_UNICODE_GENERAL_CATEGORY_MATH_SYMBOL: [Sm] + * @HB_UNICODE_GENERAL_CATEGORY_OTHER_SYMBOL: [So] + * @HB_UNICODE_GENERAL_CATEGORY_LINE_SEPARATOR: [Zl] + * @HB_UNICODE_GENERAL_CATEGORY_PARAGRAPH_SEPARATOR: [Zp] + * @HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR: [Zs] + * + * Data type for the "General_Category" (gc) property from + * the Unicode Character Database. + **/ + +/* Unicode Character Database property: General_Category (gc) */ +typedef enum +{ + HB_UNICODE_GENERAL_CATEGORY_CONTROL, /* Cc */ + HB_UNICODE_GENERAL_CATEGORY_FORMAT, /* Cf */ + HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED, /* Cn */ + HB_UNICODE_GENERAL_CATEGORY_PRIVATE_USE, /* Co */ + HB_UNICODE_GENERAL_CATEGORY_SURROGATE, /* Cs */ + HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER, /* Ll */ + HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER, /* Lm */ + HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER, /* Lo */ + HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER, /* Lt */ + HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER, /* Lu */ + HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK, /* Mc */ + HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK, /* Me */ + HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK, /* Mn */ + HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER, /* Nd */ + HB_UNICODE_GENERAL_CATEGORY_LETTER_NUMBER, /* Nl */ + HB_UNICODE_GENERAL_CATEGORY_OTHER_NUMBER, /* No */ + HB_UNICODE_GENERAL_CATEGORY_CONNECT_PUNCTUATION, /* Pc */ + HB_UNICODE_GENERAL_CATEGORY_DASH_PUNCTUATION, /* Pd */ + HB_UNICODE_GENERAL_CATEGORY_CLOSE_PUNCTUATION, /* Pe */ + HB_UNICODE_GENERAL_CATEGORY_FINAL_PUNCTUATION, /* Pf */ + HB_UNICODE_GENERAL_CATEGORY_INITIAL_PUNCTUATION, /* Pi */ + HB_UNICODE_GENERAL_CATEGORY_OTHER_PUNCTUATION, /* Po */ + HB_UNICODE_GENERAL_CATEGORY_OPEN_PUNCTUATION, /* Ps */ + HB_UNICODE_GENERAL_CATEGORY_CURRENCY_SYMBOL, /* Sc */ + HB_UNICODE_GENERAL_CATEGORY_MODIFIER_SYMBOL, /* Sk */ + HB_UNICODE_GENERAL_CATEGORY_MATH_SYMBOL, /* Sm */ + HB_UNICODE_GENERAL_CATEGORY_OTHER_SYMBOL, /* So */ + HB_UNICODE_GENERAL_CATEGORY_LINE_SEPARATOR, /* Zl */ + HB_UNICODE_GENERAL_CATEGORY_PARAGRAPH_SEPARATOR, /* Zp */ + HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR /* Zs */ +} hb_unicode_general_category_t; + +/** + * hb_unicode_combining_class_t: + * @HB_UNICODE_COMBINING_CLASS_NOT_REORDERED: Spacing and enclosing marks; also many vowel and consonant signs, even if nonspacing + * @HB_UNICODE_COMBINING_CLASS_OVERLAY: Marks which overlay a base letter or symbol + * @HB_UNICODE_COMBINING_CLASS_NUKTA: Diacritic nukta marks in Brahmi-derived scripts + * @HB_UNICODE_COMBINING_CLASS_KANA_VOICING: Hiragana/Katakana voicing marks + * @HB_UNICODE_COMBINING_CLASS_VIRAMA: Viramas + * @HB_UNICODE_COMBINING_CLASS_CCC10: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC11: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC12: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC13: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC14: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC15: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC16: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC17: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC18: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC19: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC20: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC21: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC22: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC23: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC24: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC25: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC26: [Hebrew] + * @HB_UNICODE_COMBINING_CLASS_CCC27: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC28: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC29: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC30: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC31: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC32: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC33: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC34: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC35: [Arabic] + * @HB_UNICODE_COMBINING_CLASS_CCC36: [Syriac] + * @HB_UNICODE_COMBINING_CLASS_CCC84: [Telugu] + * @HB_UNICODE_COMBINING_CLASS_CCC91: [Telugu] + * @HB_UNICODE_COMBINING_CLASS_CCC103: [Thai] + * @HB_UNICODE_COMBINING_CLASS_CCC107: [Thai] + * @HB_UNICODE_COMBINING_CLASS_CCC118: [Lao] + * @HB_UNICODE_COMBINING_CLASS_CCC122: [Lao] + * @HB_UNICODE_COMBINING_CLASS_CCC129: [Tibetan] + * @HB_UNICODE_COMBINING_CLASS_CCC130: [Tibetan] + * @HB_UNICODE_COMBINING_CLASS_CCC132: [Tibetan] Since: 7.2.0 + * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT: Marks attached at the bottom left + * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW: Marks attached directly below + * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE: Marks attached directly above + * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT: Marks attached at the top right + * @HB_UNICODE_COMBINING_CLASS_BELOW_LEFT: Distinct marks at the bottom left + * @HB_UNICODE_COMBINING_CLASS_BELOW: Distinct marks directly below + * @HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT: Distinct marks at the bottom right + * @HB_UNICODE_COMBINING_CLASS_LEFT: Distinct marks to the left + * @HB_UNICODE_COMBINING_CLASS_RIGHT: Distinct marks to the right + * @HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT: Distinct marks at the top left + * @HB_UNICODE_COMBINING_CLASS_ABOVE: Distinct marks directly above + * @HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT: Distinct marks at the top right + * @HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW: Distinct marks subtending two bases + * @HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE: Distinct marks extending above two bases + * @HB_UNICODE_COMBINING_CLASS_IOTA_SUBSCRIPT: Greek iota subscript only + * @HB_UNICODE_COMBINING_CLASS_INVALID: Invalid combining class + * + * Data type for the Canonical_Combining_Class (ccc) property + * from the Unicode Character Database. + * + * <note>Note: newer versions of Unicode may add new values. + * Client programs should be ready to handle any value in the 0..254 range + * being returned from hb_unicode_combining_class().</note> + * + **/ +typedef enum +{ + HB_UNICODE_COMBINING_CLASS_NOT_REORDERED = 0, + HB_UNICODE_COMBINING_CLASS_OVERLAY = 1, + HB_UNICODE_COMBINING_CLASS_NUKTA = 7, + HB_UNICODE_COMBINING_CLASS_KANA_VOICING = 8, + HB_UNICODE_COMBINING_CLASS_VIRAMA = 9, + + /* Hebrew */ + HB_UNICODE_COMBINING_CLASS_CCC10 = 10, + HB_UNICODE_COMBINING_CLASS_CCC11 = 11, + HB_UNICODE_COMBINING_CLASS_CCC12 = 12, + HB_UNICODE_COMBINING_CLASS_CCC13 = 13, + HB_UNICODE_COMBINING_CLASS_CCC14 = 14, + HB_UNICODE_COMBINING_CLASS_CCC15 = 15, + HB_UNICODE_COMBINING_CLASS_CCC16 = 16, + HB_UNICODE_COMBINING_CLASS_CCC17 = 17, + HB_UNICODE_COMBINING_CLASS_CCC18 = 18, + HB_UNICODE_COMBINING_CLASS_CCC19 = 19, + HB_UNICODE_COMBINING_CLASS_CCC20 = 20, + HB_UNICODE_COMBINING_CLASS_CCC21 = 21, + HB_UNICODE_COMBINING_CLASS_CCC22 = 22, + HB_UNICODE_COMBINING_CLASS_CCC23 = 23, + HB_UNICODE_COMBINING_CLASS_CCC24 = 24, + HB_UNICODE_COMBINING_CLASS_CCC25 = 25, + HB_UNICODE_COMBINING_CLASS_CCC26 = 26, + + /* Arabic */ + HB_UNICODE_COMBINING_CLASS_CCC27 = 27, + HB_UNICODE_COMBINING_CLASS_CCC28 = 28, + HB_UNICODE_COMBINING_CLASS_CCC29 = 29, + HB_UNICODE_COMBINING_CLASS_CCC30 = 30, + HB_UNICODE_COMBINING_CLASS_CCC31 = 31, + HB_UNICODE_COMBINING_CLASS_CCC32 = 32, + HB_UNICODE_COMBINING_CLASS_CCC33 = 33, + HB_UNICODE_COMBINING_CLASS_CCC34 = 34, + HB_UNICODE_COMBINING_CLASS_CCC35 = 35, + + /* Syriac */ + HB_UNICODE_COMBINING_CLASS_CCC36 = 36, + + /* Telugu */ + HB_UNICODE_COMBINING_CLASS_CCC84 = 84, + HB_UNICODE_COMBINING_CLASS_CCC91 = 91, + + /* Thai */ + HB_UNICODE_COMBINING_CLASS_CCC103 = 103, + HB_UNICODE_COMBINING_CLASS_CCC107 = 107, + + /* Lao */ + HB_UNICODE_COMBINING_CLASS_CCC118 = 118, + HB_UNICODE_COMBINING_CLASS_CCC122 = 122, + + /* Tibetan */ + HB_UNICODE_COMBINING_CLASS_CCC129 = 129, + HB_UNICODE_COMBINING_CLASS_CCC130 = 130, + HB_UNICODE_COMBINING_CLASS_CCC132 = 132, + + + HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT = 200, + HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW = 202, + HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE = 214, + HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT = 216, + HB_UNICODE_COMBINING_CLASS_BELOW_LEFT = 218, + HB_UNICODE_COMBINING_CLASS_BELOW = 220, + HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT = 222, + HB_UNICODE_COMBINING_CLASS_LEFT = 224, + HB_UNICODE_COMBINING_CLASS_RIGHT = 226, + HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT = 228, + HB_UNICODE_COMBINING_CLASS_ABOVE = 230, + HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT = 232, + HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW = 233, + HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE = 234, + + HB_UNICODE_COMBINING_CLASS_IOTA_SUBSCRIPT = 240, + + HB_UNICODE_COMBINING_CLASS_INVALID = 255 +} hb_unicode_combining_class_t; + + +/* + * hb_unicode_funcs_t + */ + +/** + * hb_unicode_funcs_t: + * + * Data type containing a set of virtual methods used for + * accessing various Unicode character properties. + * + * HarfBuzz provides a default function for each of the + * methods in #hb_unicode_funcs_t. Client programs can implement + * their own replacements for the individual Unicode functions, as + * needed, and replace the default by calling the setter for a + * method. + **/ +typedef struct hb_unicode_funcs_t hb_unicode_funcs_t; + + +/* + * just give me the best implementation you've got there. + */ +HB_EXTERN hb_unicode_funcs_t * +hb_unicode_funcs_get_default (void); + + +HB_EXTERN hb_unicode_funcs_t * +hb_unicode_funcs_create (hb_unicode_funcs_t *parent); + +HB_EXTERN hb_unicode_funcs_t * +hb_unicode_funcs_get_empty (void); + +HB_EXTERN hb_unicode_funcs_t * +hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs); + +HB_EXTERN void +hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs); + +HB_EXTERN hb_bool_t +hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + + +HB_EXTERN void * +hb_unicode_funcs_get_user_data (const hb_unicode_funcs_t *ufuncs, + hb_user_data_key_t *key); + + +HB_EXTERN void +hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs); + +HB_EXTERN hb_bool_t +hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs); + +HB_EXTERN hb_unicode_funcs_t * +hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs); + + +/* + * funcs + */ + +/* typedefs */ + +/** + * hb_unicode_combining_class_func_t: + * @ufuncs: A Unicode-functions structure + * @unicode: The code point to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should retrieve the Canonical Combining Class (ccc) + * property for a specified Unicode code point. + * + * Return value: The #hb_unicode_combining_class_t of @unicode + * + **/ +typedef hb_unicode_combining_class_t (*hb_unicode_combining_class_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode, + void *user_data); + +/** + * hb_unicode_general_category_func_t: + * @ufuncs: A Unicode-functions structure + * @unicode: The code point to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should retrieve the General Category property for + * a specified Unicode code point. + * + * Return value: The #hb_unicode_general_category_t of @unicode + * + **/ +typedef hb_unicode_general_category_t (*hb_unicode_general_category_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode, + void *user_data); + +/** + * hb_unicode_mirroring_func_t: + * @ufuncs: A Unicode-functions structure + * @unicode: The code point to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should retrieve the Bi-Directional Mirroring Glyph + * code point for a specified Unicode code point. + * + * <note>Note: If a code point does not have a specified + * Bi-Directional Mirroring Glyph defined, the method should + * return the original code point.</note> + * + * Return value: The #hb_codepoint_t of the Mirroring Glyph for @unicode + * + **/ +typedef hb_codepoint_t (*hb_unicode_mirroring_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode, + void *user_data); + +/** + * hb_unicode_script_func_t: + * @ufuncs: A Unicode-functions structure + * @unicode: The code point to query + * @user_data: User data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should retrieve the Script property for a + * specified Unicode code point. + * + * Return value: The #hb_script_t of @unicode + * + **/ +typedef hb_script_t (*hb_unicode_script_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode, + void *user_data); + +/** + * hb_unicode_compose_func_t: + * @ufuncs: A Unicode-functions structure + * @a: The first code point to compose + * @b: The second code point to compose + * @ab: (out): The composed code point + * @user_data: user data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should compose a sequence of two input Unicode code + * points by canonical equivalence, returning the composed code + * point in a #hb_codepoint_t output parameter (if successful). + * The method must return an #hb_bool_t indicating the success + * of the composition. + * + * Return value: `true` is @a,@b composed, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_unicode_compose_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t a, + hb_codepoint_t b, + hb_codepoint_t *ab, + void *user_data); + +/** + * hb_unicode_decompose_func_t: + * @ufuncs: A Unicode-functions structure + * @ab: The code point to decompose + * @a: (out): The first decomposed code point + * @b: (out): The second decomposed code point + * @user_data: user data pointer passed by the caller + * + * A virtual method for the #hb_unicode_funcs_t structure. + * + * This method should decompose an input Unicode code point, + * returning the two decomposed code points in #hb_codepoint_t + * output parameters (if successful). The method must return an + * #hb_bool_t indicating the success of the composition. + * + * Return value: `true` if @ab decomposed, `false` otherwise + * + **/ +typedef hb_bool_t (*hb_unicode_decompose_func_t) (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t ab, + hb_codepoint_t *a, + hb_codepoint_t *b, + void *user_data); + +/* func setters */ + +/** + * hb_unicode_funcs_set_combining_class_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_combining_class_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_combining_class_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_funcs_set_general_category_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_general_category_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_general_category_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_funcs_set_mirroring_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_mirroring_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_mirroring_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_funcs_set_script_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_script_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_script_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_funcs_set_compose_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_compose_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_compose_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_compose_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_unicode_funcs_set_decompose_func: + * @ufuncs: A Unicode-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: (nullable): The function to call when @user_data is not needed anymore + * + * Sets the implementation function for #hb_unicode_decompose_func_t. + * + * Since: 0.9.2 + **/ +HB_EXTERN void +hb_unicode_funcs_set_decompose_func (hb_unicode_funcs_t *ufuncs, + hb_unicode_decompose_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/* accessors */ + +/** + * hb_unicode_combining_class: + * @ufuncs: The Unicode-functions structure + * @unicode: The code point to query + * + * Retrieves the Canonical Combining Class (ccc) property + * of code point @unicode. + * + * Return value: The #hb_unicode_combining_class_t of @unicode + * + * Since: 0.9.2 + **/ +HB_EXTERN hb_unicode_combining_class_t +hb_unicode_combining_class (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode); + +/** + * hb_unicode_general_category: + * @ufuncs: The Unicode-functions structure + * @unicode: The code point to query + * + * Retrieves the General Category (gc) property + * of code point @unicode. + * + * Return value: The #hb_unicode_general_category_t of @unicode + * + * Since: 0.9.2 + **/ +HB_EXTERN hb_unicode_general_category_t +hb_unicode_general_category (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode); + +/** + * hb_unicode_mirroring: + * @ufuncs: The Unicode-functions structure + * @unicode: The code point to query + * + * Retrieves the Bi-directional Mirroring Glyph code + * point defined for code point @unicode. + * + * Return value: The #hb_codepoint_t of the Mirroring Glyph for @unicode + * + * Since: 0.9.2 + **/ +HB_EXTERN hb_codepoint_t +hb_unicode_mirroring (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode); + +/** + * hb_unicode_script: + * @ufuncs: The Unicode-functions structure + * @unicode: The code point to query + * + * Retrieves the #hb_script_t script to which code + * point @unicode belongs. + * + * Return value: The #hb_script_t of @unicode + * + * Since: 0.9.2 + **/ +HB_EXTERN hb_script_t +hb_unicode_script (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t unicode); + +HB_EXTERN hb_bool_t +hb_unicode_compose (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t a, + hb_codepoint_t b, + hb_codepoint_t *ab); + +HB_EXTERN hb_bool_t +hb_unicode_decompose (hb_unicode_funcs_t *ufuncs, + hb_codepoint_t ab, + hb_codepoint_t *a, + hb_codepoint_t *b); + +HB_END_DECLS + +#endif /* HB_UNICODE_H */ |