hb-aat-layout.h

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/*
 * Copyright © 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.
 */
 
#if !defined(HB_AAT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
#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
 
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,
 
  /*< private >*/
  _HB_AAT_LAYOUT_FEATURE_TYPE_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/
} hb_aat_layout_feature_type_t;
 
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,
 
  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE     = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS      = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS     = 2,
 
  /* Selectors for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE */
  HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_CJK_ROMAN       = 0,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_CJK_ROMAN     = 1,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_CJK_ROMAN      = 2,
  HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_CJK_ROMAN       = 3,
 
  /*< private >*/
  _HB_AAT_LAYOUT_FEATURE_SELECTOR_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/
} hb_aat_layout_feature_selector_t;
 
HB_EXTERN unsigned int
hb_aat_layout_get_feature_types (hb_face_t                    *face,
                 unsigned int                  start_offset,
                 unsigned int                 *feature_count, /* IN/OUT.  May be NULL. */
                 hb_aat_layout_feature_type_t *features       /* OUT.     May be NULL. */);
 
HB_EXTERN hb_ot_name_id_t
hb_aat_layout_feature_type_get_name_id (hb_face_t                    *face,
                    hb_aat_layout_feature_type_t  feature_type);
 
typedef struct hb_aat_layout_feature_selector_info_t {
  hb_ot_name_id_t           name_id;
  hb_aat_layout_feature_selector_t  enable;
  hb_aat_layout_feature_selector_t  disable;
  /*< private >*/
  unsigned int              reserved;
} hb_aat_layout_feature_selector_info_t;
 
#define HB_AAT_LAYOUT_NO_SELECTOR_INDEX     0xFFFFu
 
HB_EXTERN unsigned int
hb_aat_layout_feature_type_get_selector_infos (hb_face_t                             *face,
                           hb_aat_layout_feature_type_t           feature_type,
                           unsigned int                           start_offset,
                           unsigned int                          *selector_count, /* IN/OUT.  May be NULL. */
                           hb_aat_layout_feature_selector_info_t *selectors,      /* OUT.     May be NULL. */
                           unsigned int                          *default_index   /* OUT.     May be NULL. */);
 
 
/*
 * morx/mort
 */
 
HB_EXTERN hb_bool_t
hb_aat_layout_has_substitution (hb_face_t *face);
 
 
/*
 * kerx
 */
 
HB_EXTERN hb_bool_t
hb_aat_layout_has_positioning (hb_face_t *face);
 
 
/*
 * trak
 */
 
HB_EXTERN hb_bool_t
hb_aat_layout_has_tracking (hb_face_t *face);
 
 
HB_END_DECLS
 
#endif /* HB_AAT_LAYOUT_H */