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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>
64 lines
1.9 KiB
Dart
64 lines
1.9 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 'package:flutter/material.dart';
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/// Flutter code sample for [DefaultTextStyleTransition].
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void main() => runApp(const DefaultTextStyleTransitionExampleApp());
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class DefaultTextStyleTransitionExampleApp extends StatelessWidget {
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const DefaultTextStyleTransitionExampleApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(home: DefaultTextStyleTransitionExample());
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}
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}
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class DefaultTextStyleTransitionExample extends StatefulWidget {
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const DefaultTextStyleTransitionExample({super.key});
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@override
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State<DefaultTextStyleTransitionExample> createState() =>
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_DefaultTextStyleTransitionExampleState();
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}
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/// [AnimationController]s can be created with `vsync: this` because of
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/// [TickerProviderStateMixin].
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class _DefaultTextStyleTransitionExampleState extends State<DefaultTextStyleTransitionExample>
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with TickerProviderStateMixin {
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late AnimationController _controller;
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late TextStyleTween _styleTween;
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late CurvedAnimation _curvedAnimation;
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@override
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void initState() {
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super.initState();
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_controller = AnimationController(duration: const Duration(seconds: 2), vsync: this)
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..repeat(reverse: true);
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_styleTween = TextStyleTween(
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begin: const TextStyle(fontSize: 50, color: Colors.blue, fontWeight: FontWeight.w900),
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end: const TextStyle(fontSize: 50, color: Colors.red, fontWeight: FontWeight.w100),
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);
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_curvedAnimation = CurvedAnimation(parent: _controller, curve: Curves.elasticInOut);
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Center(
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child: DefaultTextStyleTransition(
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style: _styleTween.animate(_curvedAnimation),
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child: const Text('Flutter'),
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),
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);
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}
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}
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