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76 lines
3.8 KiB
Dart
76 lines
3.8 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'template.dart';
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class TypographyTemplate extends TokenTemplate {
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const TypographyTemplate(super.blockName, super.fileName, super.tokens);
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@override
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String generate() => '''
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class _M3Typography {
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_M3Typography._();
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${_textTheme('englishLike', 'alphabetic')}
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${_textTheme('dense', 'ideographic')}
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${_textTheme('tall', 'alphabetic')}
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}
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''';
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String _textTheme(String name, String baseline) {
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final StringBuffer theme = StringBuffer('static const TextTheme $name = TextTheme(\n');
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theme.writeln(' displayLarge: ${_textStyleDef('md.sys.typescale.display-large', '$name displayLarge 2021', baseline)},');
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theme.writeln(' displayMedium: ${_textStyleDef('md.sys.typescale.display-medium', '$name displayMedium 2021', baseline)},');
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theme.writeln(' displaySmall: ${_textStyleDef('md.sys.typescale.display-small', '$name displaySmall 2021', baseline)},');
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theme.writeln(' headlineLarge: ${_textStyleDef('md.sys.typescale.headline-large', '$name headlineLarge 2021', baseline)},');
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theme.writeln(' headlineMedium: ${_textStyleDef('md.sys.typescale.headline-medium', '$name headlineMedium 2021', baseline)},');
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theme.writeln(' headlineSmall: ${_textStyleDef('md.sys.typescale.headline-small', '$name headlineSmall 2021', baseline)},');
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theme.writeln(' titleLarge: ${_textStyleDef('md.sys.typescale.title-large', '$name titleLarge 2021', baseline)},');
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theme.writeln(' titleMedium: ${_textStyleDef('md.sys.typescale.title-medium', '$name titleMedium 2021', baseline)},');
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theme.writeln(' titleSmall: ${_textStyleDef('md.sys.typescale.title-small', '$name titleSmall 2021', baseline)},');
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theme.writeln(' labelLarge: ${_textStyleDef('md.sys.typescale.label-large', '$name labelLarge 2021', baseline)},');
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theme.writeln(' labelMedium: ${_textStyleDef('md.sys.typescale.label-medium', '$name labelMedium 2021', baseline)},');
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theme.writeln(' labelSmall: ${_textStyleDef('md.sys.typescale.label-small', '$name labelSmall 2021', baseline)},');
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theme.writeln(' bodyLarge: ${_textStyleDef('md.sys.typescale.body-large', '$name bodyLarge 2021', baseline)},');
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theme.writeln(' bodyMedium: ${_textStyleDef('md.sys.typescale.body-medium', '$name bodyMedium 2021', baseline)},');
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theme.writeln(' bodySmall: ${_textStyleDef('md.sys.typescale.body-small', '$name bodySmall 2021', baseline)},');
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theme.write(' );');
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return theme.toString();
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}
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String _textStyleDef(String tokenName, String debugLabel, String baseline) {
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final StringBuffer style = StringBuffer("TextStyle(debugLabel: '$debugLabel'");
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style.write(', inherit: false');
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style.write(', fontSize: ${_fontSize(tokenName)}');
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style.write(', fontWeight: ${_fontWeight(tokenName)}');
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style.write(', letterSpacing: ${_fontSpacing(tokenName)}');
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style.write(', height: ${_fontHeight(tokenName)}');
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style.write(', textBaseline: TextBaseline.$baseline');
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style.write(', leadingDistribution: TextLeadingDistribution.even');
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style.write(')');
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return style.toString();
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}
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String _fontSize(String textStyleTokenName) {
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return tokens['$textStyleTokenName.size']!.toString();
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}
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String _fontWeight(String textStyleTokenName) {
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final String weightValue = tokens[tokens['$textStyleTokenName.weight']!]!.toString();
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return 'FontWeight.w$weightValue';
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}
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String _fontSpacing(String textStyleTokenName) {
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return tokens['$textStyleTokenName.tracking']!.toString();
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}
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String _fontHeight(String textStyleTokenName) {
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final double size = tokens['$textStyleTokenName.size']! as double;
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final double lineHeight = tokens['$textStyleTokenName.line-height']! as double;
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return (lineHeight / size).toStringAsFixed(2);
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}
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}
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