1use ttf_parser::Tag;
2
3use crate::aat::feature_selector::*;
4use crate::aat::FeatureType;
5
6pub struct FeatureMapping {
7 pub ot_feature_tag: Tag,
8 pub aat_feature_type: FeatureType,
9 pub selector_to_enable: u8,
10 pub selector_to_disable: u8,
11}
12
13impl FeatureMapping {
14 const fn new(
15 ot_feature_tag: &[u8; 4],
16 aat_feature_type: FeatureType,
17 selector_to_enable: u8,
18 selector_to_disable: u8,
19 ) -> Self {
20 FeatureMapping {
21 ot_feature_tag: Tag::from_bytes(ot_feature_tag),
22 aat_feature_type,
23 selector_to_enable,
24 selector_to_disable,
25 }
26 }
27}
28
29/// Mapping from OpenType feature tags to AAT feature names and selectors.
30///
31/// Table data courtesy of Apple.
32/// Converted from mnemonics to integers when moving to this file.
33#[rustfmt::skip]
34pub const FEATURE_MAPPINGS: &[FeatureMapping] = &[
35 FeatureMapping::new(ot_feature_tag:b"afrc", aat_feature_type:FeatureType::Fractions, VERTICAL_FRACTIONS, NO_FRACTIONS),
36 FeatureMapping::new(ot_feature_tag:b"c2pc", aat_feature_type:FeatureType::UpperCase, UPPER_CASE_PETITE_CAPS, DEFAULT_UPPER_CASE),
37 FeatureMapping::new(ot_feature_tag:b"c2sc", aat_feature_type:FeatureType::UpperCase, UPPER_CASE_SMALL_CAPS, DEFAULT_UPPER_CASE),
38 FeatureMapping::new(ot_feature_tag:b"calt", aat_feature_type:FeatureType::ContextualAlternatives, CONTEXTUAL_ALTERNATES_ON, CONTEXTUAL_ALTERNATES_OFF),
39 FeatureMapping::new(ot_feature_tag:b"case", aat_feature_type:FeatureType::CaseSensitiveLayout, CASE_SENSITIVE_LAYOUT_ON, CASE_SENSITIVE_LAYOUT_OFF),
40 FeatureMapping::new(ot_feature_tag:b"clig", aat_feature_type:FeatureType::Ligatures, CONTEXTUAL_LIGATURES_ON, CONTEXTUAL_LIGATURES_OFF),
41 FeatureMapping::new(ot_feature_tag:b"cpsp", aat_feature_type:FeatureType::CaseSensitiveLayout, CASE_SENSITIVE_SPACING_ON, CASE_SENSITIVE_SPACING_OFF),
42 FeatureMapping::new(ot_feature_tag:b"cswh", aat_feature_type:FeatureType::ContextualAlternatives, CONTEXTUAL_SWASH_ALTERNATES_ON, CONTEXTUAL_SWASH_ALTERNATES_OFF),
43 FeatureMapping::new(ot_feature_tag:b"dlig", aat_feature_type:FeatureType::Ligatures, RARE_LIGATURES_ON, RARE_LIGATURES_OFF),
44 FeatureMapping::new(ot_feature_tag:b"expt", aat_feature_type:FeatureType::CharacterShape, EXPERT_CHARACTERS, selector_to_disable:16),
45 FeatureMapping::new(ot_feature_tag:b"frac", aat_feature_type:FeatureType::Fractions, DIAGONAL_FRACTIONS, NO_FRACTIONS),
46 FeatureMapping::new(ot_feature_tag:b"fwid", aat_feature_type:FeatureType::TextSpacing, MONOSPACED_TEXT, selector_to_disable:7),
47 FeatureMapping::new(ot_feature_tag:b"halt", aat_feature_type:FeatureType::TextSpacing, ALT_HALF_WIDTH_TEXT, selector_to_disable:7),
48 FeatureMapping::new(ot_feature_tag:b"hist", aat_feature_type:FeatureType::Dummy, selector_to_enable:0, selector_to_disable:1),
49 FeatureMapping::new(ot_feature_tag:b"hkna", aat_feature_type:FeatureType::AlternateKana, ALTERNATE_HORIZ_KANA_ON, ALTERNATE_HORIZ_KANA_OFF),
50 FeatureMapping::new(ot_feature_tag:b"hlig", aat_feature_type:FeatureType::Ligatures, HISTORICAL_LIGATURES_ON, HISTORICAL_LIGATURES_OFF),
51 FeatureMapping::new(ot_feature_tag:b"hngl", aat_feature_type:FeatureType::Transliteration, HANJA_TO_HANGUL, NO_TRANSLITERATION),
52 FeatureMapping::new(ot_feature_tag:b"hojo", aat_feature_type:FeatureType::CharacterShape, HOJO_CHARACTERS, selector_to_disable:16),
53 FeatureMapping::new(ot_feature_tag:b"hwid", aat_feature_type:FeatureType::TextSpacing, HALF_WIDTH_TEXT, selector_to_disable:7),
54 FeatureMapping::new(ot_feature_tag:b"ital", aat_feature_type:FeatureType::ItalicCjkRoman, CJK_ITALIC_ROMAN_ON, CJK_ITALIC_ROMAN_OFF),
55 FeatureMapping::new(ot_feature_tag:b"jp04", aat_feature_type:FeatureType::CharacterShape, JIS2004_CHARACTERS, selector_to_disable:16),
56 FeatureMapping::new(ot_feature_tag:b"jp78", aat_feature_type:FeatureType::CharacterShape, JIS1978_CHARACTERS, selector_to_disable:16),
57 FeatureMapping::new(ot_feature_tag:b"jp83", aat_feature_type:FeatureType::CharacterShape, JIS1983_CHARACTERS, selector_to_disable:16),
58 FeatureMapping::new(ot_feature_tag:b"jp90", aat_feature_type:FeatureType::CharacterShape, JIS1990_CHARACTERS, selector_to_disable:16),
59 FeatureMapping::new(ot_feature_tag:b"liga", aat_feature_type:FeatureType::Ligatures, COMMON_LIGATURES_ON, COMMON_LIGATURES_OFF),
60 FeatureMapping::new(ot_feature_tag:b"lnum", aat_feature_type:FeatureType::NumberCase, UPPER_CASE_NUMBERS, selector_to_disable:2),
61 FeatureMapping::new(ot_feature_tag:b"mgrk", aat_feature_type:FeatureType::MathematicalExtras, MATHEMATICAL_GREEK_ON, MATHEMATICAL_GREEK_OFF),
62 FeatureMapping::new(ot_feature_tag:b"nlck", aat_feature_type:FeatureType::CharacterShape, NLCCHARACTERS, selector_to_disable:16),
63 FeatureMapping::new(ot_feature_tag:b"onum", aat_feature_type:FeatureType::NumberCase, LOWER_CASE_NUMBERS, selector_to_disable:2),
64 FeatureMapping::new(ot_feature_tag:b"ordn", aat_feature_type:FeatureType::VerticalPosition, ORDINALS, NORMAL_POSITION),
65 FeatureMapping::new(ot_feature_tag:b"palt", aat_feature_type:FeatureType::TextSpacing, ALT_PROPORTIONAL_TEXT, selector_to_disable:7),
66 FeatureMapping::new(ot_feature_tag:b"pcap", aat_feature_type:FeatureType::LowerCase, LOWER_CASE_PETITE_CAPS, DEFAULT_LOWER_CASE),
67 FeatureMapping::new(ot_feature_tag:b"pkna", aat_feature_type:FeatureType::TextSpacing, PROPORTIONAL_TEXT, selector_to_disable:7),
68 FeatureMapping::new(ot_feature_tag:b"pnum", aat_feature_type:FeatureType::NumberSpacing, PROPORTIONAL_NUMBERS, selector_to_disable:4),
69 FeatureMapping::new(ot_feature_tag:b"pwid", aat_feature_type:FeatureType::TextSpacing, PROPORTIONAL_TEXT, selector_to_disable:7),
70 FeatureMapping::new(ot_feature_tag:b"qwid", aat_feature_type:FeatureType::TextSpacing, QUARTER_WIDTH_TEXT, selector_to_disable:7),
71 FeatureMapping::new(ot_feature_tag:b"ruby", aat_feature_type:FeatureType::RubyKana, RUBY_KANA_ON, RUBY_KANA_OFF),
72 FeatureMapping::new(ot_feature_tag:b"sinf", aat_feature_type:FeatureType::VerticalPosition, SCIENTIFIC_INFERIORS, NORMAL_POSITION),
73 FeatureMapping::new(ot_feature_tag:b"smcp", aat_feature_type:FeatureType::LowerCase, LOWER_CASE_SMALL_CAPS, DEFAULT_LOWER_CASE),
74 FeatureMapping::new(ot_feature_tag:b"smpl", aat_feature_type:FeatureType::CharacterShape, SIMPLIFIED_CHARACTERS, selector_to_disable:16),
75 FeatureMapping::new(ot_feature_tag:b"ss01", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_ONE_ON, STYLISTIC_ALT_ONE_OFF),
76 FeatureMapping::new(ot_feature_tag:b"ss02", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_TWO_ON, STYLISTIC_ALT_TWO_OFF),
77 FeatureMapping::new(ot_feature_tag:b"ss03", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_THREE_ON, STYLISTIC_ALT_THREE_OFF),
78 FeatureMapping::new(ot_feature_tag:b"ss04", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_FOUR_ON, STYLISTIC_ALT_FOUR_OFF),
79 FeatureMapping::new(ot_feature_tag:b"ss05", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_FIVE_ON, STYLISTIC_ALT_FIVE_OFF),
80 FeatureMapping::new(ot_feature_tag:b"ss06", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_SIX_ON, STYLISTIC_ALT_SIX_OFF),
81 FeatureMapping::new(ot_feature_tag:b"ss07", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_SEVEN_ON, STYLISTIC_ALT_SEVEN_OFF),
82 FeatureMapping::new(ot_feature_tag:b"ss08", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_EIGHT_ON, STYLISTIC_ALT_EIGHT_OFF),
83 FeatureMapping::new(ot_feature_tag:b"ss09", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_NINE_ON, STYLISTIC_ALT_NINE_OFF),
84 FeatureMapping::new(ot_feature_tag:b"ss10", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_TEN_ON, STYLISTIC_ALT_TEN_OFF),
85 FeatureMapping::new(ot_feature_tag:b"ss11", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_ELEVEN_ON, STYLISTIC_ALT_ELEVEN_OFF),
86 FeatureMapping::new(ot_feature_tag:b"ss12", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_TWELVE_ON, STYLISTIC_ALT_TWELVE_OFF),
87 FeatureMapping::new(ot_feature_tag:b"ss13", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_THIRTEEN_ON, STYLISTIC_ALT_THIRTEEN_OFF),
88 FeatureMapping::new(ot_feature_tag:b"ss14", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_FOURTEEN_ON, STYLISTIC_ALT_FOURTEEN_OFF),
89 FeatureMapping::new(ot_feature_tag:b"ss15", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_FIFTEEN_ON, STYLISTIC_ALT_FIFTEEN_OFF),
90 FeatureMapping::new(ot_feature_tag:b"ss16", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_SIXTEEN_ON, STYLISTIC_ALT_SIXTEEN_OFF),
91 FeatureMapping::new(ot_feature_tag:b"ss17", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_SEVENTEEN_ON, STYLISTIC_ALT_SEVENTEEN_OFF),
92 FeatureMapping::new(ot_feature_tag:b"ss18", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_EIGHTEEN_ON, STYLISTIC_ALT_EIGHTEEN_OFF),
93 FeatureMapping::new(ot_feature_tag:b"ss19", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_NINETEEN_ON, STYLISTIC_ALT_NINETEEN_OFF),
94 FeatureMapping::new(ot_feature_tag:b"ss20", aat_feature_type:FeatureType::StylisticAlternatives, STYLISTIC_ALT_TWENTY_ON, STYLISTIC_ALT_TWENTY_OFF),
95 FeatureMapping::new(ot_feature_tag:b"subs", aat_feature_type:FeatureType::VerticalPosition, INFERIORS, NORMAL_POSITION),
96 FeatureMapping::new(ot_feature_tag:b"sups", aat_feature_type:FeatureType::VerticalPosition, SUPERIORS, NORMAL_POSITION),
97 FeatureMapping::new(ot_feature_tag:b"swsh", aat_feature_type:FeatureType::ContextualAlternatives, SWASH_ALTERNATES_ON, SWASH_ALTERNATES_OFF),
98 FeatureMapping::new(ot_feature_tag:b"titl", aat_feature_type:FeatureType::StyleOptions, TITLING_CAPS, NO_STYLE_OPTIONS),
99 FeatureMapping::new(ot_feature_tag:b"tnam", aat_feature_type:FeatureType::CharacterShape, TRADITIONAL_NAMES_CHARACTERS, selector_to_disable:16),
100 FeatureMapping::new(ot_feature_tag:b"tnum", aat_feature_type:FeatureType::NumberSpacing, MONOSPACED_NUMBERS, selector_to_disable:4),
101 FeatureMapping::new(ot_feature_tag:b"trad", aat_feature_type:FeatureType::CharacterShape, TRADITIONAL_CHARACTERS, selector_to_disable:16),
102 FeatureMapping::new(ot_feature_tag:b"twid", aat_feature_type:FeatureType::TextSpacing, THIRD_WIDTH_TEXT, selector_to_disable:7),
103 FeatureMapping::new(ot_feature_tag:b"unic", aat_feature_type:FeatureType::LetterCase, selector_to_enable:14, selector_to_disable:15),
104 FeatureMapping::new(ot_feature_tag:b"valt", aat_feature_type:FeatureType::TextSpacing, ALT_PROPORTIONAL_TEXT, selector_to_disable:7),
105 FeatureMapping::new(ot_feature_tag:b"vert", aat_feature_type:FeatureType::VerticalSubstitution, SUBSTITUTE_VERTICAL_FORMS_ON, SUBSTITUTE_VERTICAL_FORMS_OFF),
106 FeatureMapping::new(ot_feature_tag:b"vhal", aat_feature_type:FeatureType::TextSpacing, ALT_HALF_WIDTH_TEXT, selector_to_disable:7),
107 FeatureMapping::new(ot_feature_tag:b"vkna", aat_feature_type:FeatureType::AlternateKana, ALTERNATE_VERT_KANA_ON, ALTERNATE_VERT_KANA_OFF),
108 FeatureMapping::new(ot_feature_tag:b"vpal", aat_feature_type:FeatureType::TextSpacing, ALT_PROPORTIONAL_TEXT, selector_to_disable:7),
109 FeatureMapping::new(ot_feature_tag:b"vrt2", aat_feature_type:FeatureType::VerticalSubstitution, SUBSTITUTE_VERTICAL_FORMS_ON, SUBSTITUTE_VERTICAL_FORMS_OFF),
110 FeatureMapping::new(ot_feature_tag:b"vrtr", aat_feature_type:FeatureType::VerticalSubstitution, selector_to_enable:2, selector_to_disable:3),
111 FeatureMapping::new(ot_feature_tag:b"zero", aat_feature_type:FeatureType::TypographicExtras, SLASHED_ZERO_ON, SLASHED_ZERO_OFF),
112];
113