mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
5491c8c146
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
1.6 KiB
Dart
58 lines
1.6 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 'package:flutter/material.dart';
|
|
|
|
/// Flutter code sample for [ScaleTransition].
|
|
|
|
void main() => runApp(const ScaleTransitionExampleApp());
|
|
|
|
class ScaleTransitionExampleApp extends StatelessWidget {
|
|
const ScaleTransitionExampleApp({super.key});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return const MaterialApp(home: ScaleTransitionExample());
|
|
}
|
|
}
|
|
|
|
class ScaleTransitionExample extends StatefulWidget {
|
|
const ScaleTransitionExample({super.key});
|
|
|
|
@override
|
|
State<ScaleTransitionExample> createState() => _ScaleTransitionExampleState();
|
|
}
|
|
|
|
/// [AnimationController]s can be created with `vsync: this` because of
|
|
/// [TickerProviderStateMixin].
|
|
class _ScaleTransitionExampleState extends State<ScaleTransitionExample>
|
|
with TickerProviderStateMixin {
|
|
late final AnimationController _controller = AnimationController(
|
|
duration: const Duration(seconds: 2),
|
|
vsync: this,
|
|
)..repeat(reverse: true);
|
|
late final Animation<double> _animation = CurvedAnimation(
|
|
parent: _controller,
|
|
curve: Curves.fastOutSlowIn,
|
|
);
|
|
|
|
@override
|
|
void dispose() {
|
|
_controller.dispose();
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Scaffold(
|
|
body: Center(
|
|
child: ScaleTransition(
|
|
scale: _animation,
|
|
child: const Padding(padding: EdgeInsets.all(8.0), child: FlutterLogo(size: 150.0)),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|