5892a0039b
Remove more `textScaleFactor` references from flutter/flutter. - Some changes are related to label scaling: the padding EdgeInsets values of some chip subclasses scale linearly between predetermined "max" padding values and "min" padding values. Before they scale with the `textScaleFactor` scalar, now they scale with the font size and are still capped at the original "max" and "min" values. - The rest of them are tests or size heuristics that depend on `textScaleFactor`, these are replaced by an effective text scale factor computed using a default font size (which is determined in a pretty random fashion, but it will only make a difference on Android 14+). No API changes in this batch. There are still some references left that I intend to remove in a different batch that would introduce API changes.
86 lines
2.9 KiB
Dart
86 lines
2.9 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 ChipTemplate extends TokenTemplate {
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const ChipTemplate(super.blockName, super.fileName, super.tokens, {
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super.colorSchemePrefix = '_colors.',
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super.textThemePrefix = '_textTheme.'
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});
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static const String tokenGroup = 'md.comp.assist-chip';
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static const String variant = '.flat';
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@override
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String generate() => '''
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class _${blockName}DefaultsM3 extends ChipThemeData {
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_${blockName}DefaultsM3(this.context, this.isEnabled)
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: super(
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elevation: ${elevation("$tokenGroup$variant.container")},
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shape: ${shape("$tokenGroup.container")},
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showCheckmark: true,
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);
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final BuildContext context;
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final bool isEnabled;
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late final ColorScheme _colors = Theme.of(context).colorScheme;
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late final TextTheme _textTheme = Theme.of(context).textTheme;
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@override
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TextStyle? get labelStyle => ${textStyle("$tokenGroup.label-text")};
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@override
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MaterialStateProperty<Color?>? get color => null; // Subclasses override this getter
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@override
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Color? get shadowColor => ${colorOrTransparent("$tokenGroup.container.shadow-color")};
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@override
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Color? get surfaceTintColor => ${colorOrTransparent("$tokenGroup.container.surface-tint-layer.color")};
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@override
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Color? get checkmarkColor => ${color("$tokenGroup.with-icon.selected.icon.color")};
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@override
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Color? get deleteIconColor => ${color("$tokenGroup.with-icon.selected.icon.color")};
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@override
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BorderSide? get side => isEnabled
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? ${border('$tokenGroup$variant.outline')}
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: ${border('$tokenGroup$variant.disabled.outline')};
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@override
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IconThemeData? get iconTheme => IconThemeData(
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color: isEnabled
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? ${color("$tokenGroup.with-icon.icon.color")}
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: ${color("$tokenGroup.with-icon.disabled.icon.color")},
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size: ${getToken("$tokenGroup.with-icon.icon.size")},
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);
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@override
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EdgeInsetsGeometry? get padding => const EdgeInsets.all(8.0);
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/// The label padding of the chip scales with the font size specified in the
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/// [labelStyle], and the system font size settings that scale font sizes
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/// globally.
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///
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/// The chip at effective font size 14.0 starts with 8px on each side and as
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/// the font size scales up to closer to 28.0, the label padding is linearly
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/// interpolated from 8px to 4px. Once the label has a font size of 2 or
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/// higher, label padding remains 4px.
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@override
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EdgeInsetsGeometry? get labelPadding {
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final double fontSize = labelStyle?.fontSize ?? 14.0;
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final double fontSizeRatio = MediaQuery.textScalerOf(context).scale(fontSize) / 14.0;
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return EdgeInsets.lerp(
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const EdgeInsets.symmetric(horizontal: 8.0),
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const EdgeInsets.symmetric(horizontal: 4.0),
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clampDouble(fontSizeRatio - 1.0, 0.0, 1.0),
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)!;
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}
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}
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''';
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}
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