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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>
58 lines
1.5 KiB
Dart
58 lines
1.5 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 [SizeTransition].
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void main() => runApp(const SizeTransitionExampleApp());
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class SizeTransitionExampleApp extends StatelessWidget {
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const SizeTransitionExampleApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(home: SizeTransitionExample());
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}
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}
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class SizeTransitionExample extends StatefulWidget {
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const SizeTransitionExample({super.key});
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@override
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State<SizeTransitionExample> createState() => _SizeTransitionExampleState();
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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 _SizeTransitionExampleState extends State<SizeTransitionExample>
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with TickerProviderStateMixin {
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late final AnimationController _controller = AnimationController(
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duration: const Duration(seconds: 3),
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vsync: this,
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)..repeat();
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late final Animation<double> _animation = CurvedAnimation(
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parent: _controller,
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curve: Curves.fastOutSlowIn,
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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 Scaffold(
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body: SizeTransition(
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sizeFactor: _animation,
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axis: Axis.horizontal,
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axisAlignment: -1,
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child: const Center(child: FlutterLogo(size: 200.0)),
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),
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);
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}
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}
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