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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
100 lines
3.4 KiB
Dart
100 lines
3.4 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 'package:flutter/material.dart';
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/// Flutter code sample for [TabBar.indicatorAnimation].
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void main() => runApp(const IndicatorAnimationExampleApp());
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class IndicatorAnimationExampleApp extends StatelessWidget {
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const IndicatorAnimationExampleApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(home: IndicatorAnimationExample());
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}
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}
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const List<(TabIndicatorAnimation, String)> indicatorAnimationSegments =
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<(TabIndicatorAnimation, String)>[
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(TabIndicatorAnimation.linear, 'Linear'),
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(TabIndicatorAnimation.elastic, 'Elastic'),
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];
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class IndicatorAnimationExample extends StatefulWidget {
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const IndicatorAnimationExample({super.key});
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@override
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State<IndicatorAnimationExample> createState() => _IndicatorAnimationExampleState();
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}
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class _IndicatorAnimationExampleState extends State<IndicatorAnimationExample> {
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Set<TabIndicatorAnimation> _animationStyleSelection = <TabIndicatorAnimation>{
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TabIndicatorAnimation.linear,
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};
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TabIndicatorAnimation _tabIndicatorAnimation = TabIndicatorAnimation.linear;
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@override
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Widget build(BuildContext context) {
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return DefaultTabController(
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length: 6,
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child: Scaffold(
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appBar: AppBar(
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title: const Text('Indicator Animation Example'),
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bottom: TabBar(
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indicatorAnimation: _tabIndicatorAnimation,
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isScrollable: true,
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tabAlignment: TabAlignment.start,
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tabs: const <Widget>[
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Tab(text: 'Short Tab'),
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Tab(text: 'Very Very Very Long Tab'),
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Tab(text: 'Short Tab'),
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Tab(text: 'Very Very Very Long Tab'),
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Tab(text: 'Short Tab'),
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Tab(text: 'Very Very Very Long Tab'),
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],
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),
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),
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body: Column(
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children: <Widget>[
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const SizedBox(height: 16),
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SegmentedButton<TabIndicatorAnimation>(
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selected: _animationStyleSelection,
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onSelectionChanged: (Set<TabIndicatorAnimation> styles) {
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setState(() {
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_animationStyleSelection = styles;
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_tabIndicatorAnimation = styles.first;
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});
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},
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segments:
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indicatorAnimationSegments.map<ButtonSegment<TabIndicatorAnimation>>((
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(TabIndicatorAnimation, String) shirt,
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) {
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return ButtonSegment<TabIndicatorAnimation>(
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value: shirt.$1,
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label: Text(shirt.$2),
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);
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}).toList(),
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),
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const SizedBox(height: 16),
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const Expanded(
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child: TabBarView(
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children: <Widget>[
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Center(child: Text('Short Tab Page')),
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Center(child: Text('Very Very Very Long Tab Page')),
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Center(child: Text('Short Tab Page')),
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Center(child: Text('Very Very Very Long Tab Page')),
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Center(child: Text('Short Tab Page')),
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Center(child: Text('Very Very Very Long Tab Page')),
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],
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),
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),
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],
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),
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),
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);
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}
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}
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