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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
+
+/**
+ * hb_aat_layout_feature_type_t:
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_INVALID: Initial, unset feature type
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC: [All Typographic Features](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type0)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES: [Ligatures](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type1)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CURSIVE_CONNECTION: [Cursive Connection](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type2)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_LETTER_CASE: [Letter Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type3)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION: [Vertical Substitution](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type4)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT: [Linguistic Rearrangement](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type5)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING: [Number Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type6)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE: [Smart Swash](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type8)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE: [Diacritics](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type9)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION: [Vertical Position](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type10)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS: [Fractions](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type11)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE: [Overlapping Characters](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type13)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS: [Typographic Extras](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type14)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS: [Mathematical Extras](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type15)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE: [Ornament Sets](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type16)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES: [Character Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type17)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE: [Design Complexity](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type18)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS: [Style Options](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type19)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE: [Character Shape](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type20)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE: [Number Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type21)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING: [Text Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type22)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION: [Transliteration](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type23)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE: [Annotation](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type24)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE: [Kana Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type25)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE: [Ideographic Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type26)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE: [Unicode Decomposition](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type27)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA: [Ruby Kana](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type28)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE: [CJK Symbol Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type29)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE: [Ideographic Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type30)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE: [CJK Vertical Roman Placement](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type31)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN: [Italic CJK Roman](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type32)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT: [Case Sensitive Layout](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type33)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA: [Alternate Kana](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type34)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES: [Stylistic Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type35)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES: [Contextual Alternatives](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type36)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE: [Lower Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type37)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE: [Upper Case](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type38)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE: [Language Tag](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type39)
+ * @HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE: [CJK Roman Spacing](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html#Type103)
+ *
+ * The possible feature types defined for AAT shaping, from Apple [Font Feature Registry](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html).
+ *
+ * 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_CURSIVE_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;
+
+/**
+ * hb_aat_layout_feature_selector_t:
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID: Initial, unset feature selector
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UNCONNECTED: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PARTIALLY_CONNECTED: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CURSIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_AND_LOWER_CASE: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_CAPS: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_LOWER_CASE: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS_AND_SMALL_CAPS: Deprecated
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SHOW_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HIDE_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DECOMPOSE_DIACRITICS: for #HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS: for #HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ORNAMENTS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DINGBATS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PI_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FLEURONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DECORATIVE_BORDERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INTERNATIONAL_SYMBOLS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MATH_SYMBOLS: for #HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ALTERNATES: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL1: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL2: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL3: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL4: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL5: for #HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DISPLAY_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ENGRAVED_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ILLUMINATED_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS: for #HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT: for #HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HIRAGANA_TO_KATAKANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_KATAKANA_TO_HIRAGANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_KANA_TO_ROMANIZATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_HIRAGANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_KATAKANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROUNDED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CIRCLE_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_CIRCLE_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PARENTHESIS_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIOD_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMAN_NUMERAL_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAMOND_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_ROUNDED_BOX_ANNOTATION: for #HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_KANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_KANA: for #HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_IDEOGRAPHS: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_RUBY_KANA: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF instead
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON instead
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_SYMBOL_ALTERNATIVES: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_IDEOGRAPHIC_ALTERNATIVES: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_ONE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_TWO: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_THREE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FOUR: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FIVE: for #HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_CENTERED: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_HBASELINE: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_ITALIC_ROMAN: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF instead
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN: Deprecated; use #HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON instead
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLISTIC_ALTERNATES: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF: for #HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS: for #HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE
+ * @HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_CJK_ROMAN: for #HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE
+ *
+ * The selectors defined for specifying AAT feature settings.
+ *
+ * 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,
+
+ /* 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);
+
+/**
+ * hb_aat_layout_feature_selector_info_t:
+ * @name_id: The selector's name identifier
+ * @enable: The value to turn the selector on
+ * @disable: The value to turn the selector off
+ *
+ * Structure representing a setting for an #hb_aat_layout_feature_type_t.
+ */
+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;
+
+/**
+ * HB_AAT_LAYOUT_NO_SELECTOR_INDEX
+ *
+ * Used when getting or setting AAT feature selectors. Indicates that
+ * there is no selector index corresponding to the selector of interest.
+ *
+ */
+#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 */