JDK14/Java14源码在线阅读

/*
 * Copyright 漏 2018  Ebrahim Byagowi
 *
 *  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.
 */

#ifndef HB_AAT_H_IN
#error "Include <hb-aat.h> instead."
#endif

#ifndef HB_AAT_LAYOUT_H
#define HB_AAT_LAYOUT_H

#include "hb.h"

#include "hb-ot.h"

HB_BEGIN_DECLS

/**
 * hb_aat_layout_feature_type_t:
 *
 *
 * Since: 2.2.0
 */
typedef enum
{
  HB_AAT_LAYOUT_FEATURE_TYPE_INVALID                            = 0xFFFF,

  HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC                    = 0,
  HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES                          = 1,
  HB_AAT_LAYOUT_FEATURE_TYPE_CURISVE_CONNECTION                 = 2,
  HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE                        = 3,
  HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION              = 4,
  HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT           = 5,
  HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING                     = 6,
  HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE                   = 8,
  HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE                    = 9,
  HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION                  = 10,
  HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS                          = 11,
  HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE        = 13,
  HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS                 = 14,
  HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS                = 15,
  HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE                 = 16,
  HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES             = 17,
  HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE             = 18,
  HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS                      = 19,
  HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE                    = 20,
  HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE                        = 21,
  HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING                       = 22,
  HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION                    = 23,
  HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE                    = 24,
  HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE                  = 25,
  HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE           = 26,
  HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE         = 27,
  HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA                          = 28,
  HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE       = 29,
  HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE      = 30,
  HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE  = 31,
  HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN                   = 32,
  HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT              = 33,
  HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA                     = 34,
  HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES             = 35,
  HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES            = 36,
  HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE                         = 37,
  HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE                         = 38,
  HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE                  = 39,
  HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE             = 103,

  _HB_AAT_LAYOUT_FEATURE_TYPE_MAX_VALUE= 0x7FFFFFFFu, /*< skip >*/
} hb_aat_layout_feature_type_t;

/**
 * hb_aat_layout_feature_selector_t:
 *
 *
 * Since: 2.2.0
 */
typedef enum
{
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID                        = 0xFFFF,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_ON           = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_OFF          = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON          = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF         = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON            = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF           = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON              = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF             = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_ON                       = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_OFF                      = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_ON              = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_OFF             = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_ON         = 10,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_OFF        = 11,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_ON           = 12,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_OFF          = 13,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_ON    = 14,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_OFF   = 15,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_ON            = 16,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_OFF           = 17,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON        = 18,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF       = 19,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON        = 20,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF       = 21,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_UNCONNECTED                    = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PARTIALLY_CONNECTED            = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CURSIVE                        = 2,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_AND_LOWER_CASE           = 0, /* deprecated */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_CAPS                       = 1, /* deprecated */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_LOWER_CASE                 = 2, /* deprecated */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS                     = 3, /* deprecated */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS                   = 4, /* deprecated */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS_AND_SMALL_CAPS    = 5, /* deprecated */

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON   = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF  = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_ON    = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_OFF   = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS           = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_NUMBERS            = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_NUMBERS          = 3,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_ON        = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_OFF       = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_ON          = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_OFF         = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_ON        = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_OFF       = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_ON          = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_OFF         = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_ON           = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_OFF          = 9,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SHOW_DIACRITICS                = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HIDE_DIACRITICS                = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DECOMPOSE_DIACRITICS           = 2,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION                = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS                      = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS                      = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS                       = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS           = 4,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS                   = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS             = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS             = 2,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_ON             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_OFF            = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_ON          = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_OFF         = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_ON           = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_OFF          = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON                = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF               = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_ON            = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_OFF           = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_ON                = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_OFF               = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_ON         = 10,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_OFF        = 11,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_ON             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_OFF            = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_ON        = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_OFF       = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_ON             = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_OFF            = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_ON        = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_OFF       = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_ON                   = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_OFF                  = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON          = 10,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF         = 11,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ORNAMENTS                   = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DINGBATS                       = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PI_CHARACTERS                  = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FLEURONS                       = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DECORATIVE_BORDERS             = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INTERNATIONAL_SYMBOLS          = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_MATH_SYMBOLS                   = 6,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ALTERNATES                  = 0,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL1                  = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL2                  = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL3                  = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL4                  = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL5                  = 4,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS               = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DISPLAY_TEXT                   = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ENGRAVED_TEXT                  = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ILLUMINATED_CAPS               = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS                   = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TALL_CAPS                      = 5,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS         = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS          = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS             = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS             = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS             = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_ONE            = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_TWO            = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_THREE          = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FOUR           = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FIVE           = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS              = 10,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS             = 11,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS                = 12,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS                  = 13,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS   = 14,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS             = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT              = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT                = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT                = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT               = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT             = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT          = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT            = 6,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL                = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HIRAGANA_TO_KATAKANA           = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_KATAKANA_TO_HIRAGANA           = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_KANA_TO_ROMANIZATION           = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_HIRAGANA       = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_KATAKANA       = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_ONE        = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_TWO        = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_THREE      = 9,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ANNOTATION                  = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_BOX_ANNOTATION                 = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ROUNDED_BOX_ANNOTATION         = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CIRCLE_ANNOTATION              = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_CIRCLE_ANNOTATION     = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PARENTHESIS_ANNOTATION         = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIOD_ANNOTATION              = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMAN_NUMERAL_ANNOTATION       = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAMOND_ANNOTATION             = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_BOX_ANNOTATION        = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_ROUNDED_BOX_ANNOTATION= 10,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_KANA                = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_KANA              = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_IDEOGRAPHS          = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_IDEOGRAPHS        = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_IDEOGRAPHS          = 2,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_ON       = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_OFF      = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_ON   = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_OFF  = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_ON     = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_OFF    = 5,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_RUBY_KANA                   = 0, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF instead */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA                      = 1, /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON instead */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON                   = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF                  = 3,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_SYMBOL_ALTERNATIVES     = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_ONE             = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_TWO             = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_THREE           = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FOUR            = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FIVE            = 5,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_IDEOGRAPHIC_ALTERNATIVES    = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_ONE            = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_TWO            = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_THREE          = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FOUR           = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FIVE           = 5,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_CENTERED    = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_HBASELINE   = 1,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_ITALIC_ROMAN            = 0,    /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF instead */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN               = 1,    /* deprecated - use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON instead */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON            = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF           = 3,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON       = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF      = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON      = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF     = 3,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON        = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF       = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON         = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF        = 3,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLISTIC_ALTERNATES        = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON           = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF          = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON           = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF          = 5,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON         = 6,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF        = 7,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON          = 8,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF         = 9,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON          = 10,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF         = 11,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON           = 12,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF          = 13,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON         = 14,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF        = 15,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON         = 16,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF        = 17,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON          = 18,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF         = 19,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON           = 20,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF          = 21,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON        = 22,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF       = 23,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON        = 24,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF       = 25,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON      = 26,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF     = 27,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON      = 28,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF     = 29,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON       = 30,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF      = 31,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON       = 32,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF      = 33,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON     = 34,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF    = 35,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON      = 36,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF     = 37,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON      = 38,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF     = 39,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON        = 40,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF       = 41,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON       = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF      = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON            = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF           = 3,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON = 4,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF= 5,

  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE             = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS          = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS         = 2,


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