flutter/dev/tools/gen_defaults/lib/navigation_bar_template.dart
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---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
2024-12-19 20:06:21 +00:00

78 lines
2.7 KiB
Dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'template.dart';
class NavigationBarTemplate extends TokenTemplate {
const NavigationBarTemplate(
super.blockName,
super.fileName,
super.tokens, {
super.colorSchemePrefix = '_colors.',
super.textThemePrefix = '_textTheme.',
});
@override
String generate() => '''
class _${blockName}DefaultsM3 extends NavigationBarThemeData {
_${blockName}DefaultsM3(this.context)
: super(
height: ${getToken("md.comp.navigation-bar.container.height")},
elevation: ${elevation("md.comp.navigation-bar.container")},
labelBehavior: NavigationDestinationLabelBehavior.alwaysShow,
);
final BuildContext context;
late final ColorScheme _colors = Theme.of(context).colorScheme;
late final TextTheme _textTheme = Theme.of(context).textTheme;
@override
Color? get backgroundColor => ${componentColor("md.comp.navigation-bar.container")};
@override
Color? get shadowColor => ${colorOrTransparent("md.comp.navigation-bar.container.shadow-color")};
@override
Color? get surfaceTintColor => ${colorOrTransparent("md.comp.navigation-bar.container.surface-tint-layer.color")};
@override
MaterialStateProperty<IconThemeData?>? get iconTheme {
return MaterialStateProperty.resolveWith((Set<MaterialState> states) {
return IconThemeData(
size: ${getToken("md.comp.navigation-bar.icon.size")},
color: states.contains(MaterialState.disabled)
? _colors.onSurfaceVariant.withOpacity(0.38)
: states.contains(MaterialState.selected)
? ${componentColor("md.comp.navigation-bar.active.icon")}
: ${componentColor("md.comp.navigation-bar.inactive.icon")},
);
});
}
@override
Color? get indicatorColor => ${componentColor("md.comp.navigation-bar.active-indicator")};
@override
ShapeBorder? get indicatorShape => ${shape("md.comp.navigation-bar.active-indicator")};
@override
MaterialStateProperty<TextStyle?>? get labelTextStyle {
return MaterialStateProperty.resolveWith((Set<MaterialState> states) {
final TextStyle style = ${textStyle("md.comp.navigation-bar.label-text")}!;
return style.apply(
color: states.contains(MaterialState.disabled)
? _colors.onSurfaceVariant.withOpacity(0.38)
: states.contains(MaterialState.selected)
? ${componentColor("md.comp.navigation-bar.active.label-text")}
: ${componentColor("md.comp.navigation-bar.inactive.label-text")}
);
});
}
@override
EdgeInsetsGeometry? get labelPadding => const EdgeInsets.only(top: 4);
}
''';
}