| 1 | // Copyright 2014 The Flutter Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | import 'package:flutter/material.dart'; |
| 6 | |
| 7 | /// Flutter code sample for [OverflowBox]. |
| 8 | |
| 9 | void main() => runApp(const OverflowBoxApp()); |
| 10 | |
| 11 | class OverflowBoxApp extends StatelessWidget { |
| 12 | const OverflowBoxApp({super.key}); |
| 13 | |
| 14 | @override |
| 15 | Widget build(BuildContext context) { |
| 16 | return MaterialApp( |
| 17 | home: Scaffold( |
| 18 | appBar: AppBar(title: const Text('OverflowBox Sample')), |
| 19 | body: const Center(child: OverflowBoxExample()), |
| 20 | ), |
| 21 | ); |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | class OverflowBoxExample extends StatelessWidget { |
| 26 | const OverflowBoxExample({super.key}); |
| 27 | |
| 28 | @override |
| 29 | Widget build(BuildContext context) { |
| 30 | return Column( |
| 31 | mainAxisAlignment: MainAxisAlignment.center, |
| 32 | children: <Widget>[ |
| 33 | const Text('Cover Me'), |
| 34 | // This parent container has fixed width and |
| 35 | // height of 100 pixels. |
| 36 | Container( |
| 37 | width: 100, |
| 38 | height: 100, |
| 39 | color: Theme.of(context).colorScheme.secondaryContainer, |
| 40 | // This OverflowBox imposes its own constraints of maxWidth |
| 41 | // and maxHeight of 200 pixels on its child which allows the |
| 42 | // child to overflow the parent container. |
| 43 | child: const OverflowBox( |
| 44 | maxWidth: 200, |
| 45 | maxHeight: 200, |
| 46 | // Without the OverflowBox, the child widget would be |
| 47 | // constrained to the size of the parent container |
| 48 | // and would not overflow the parent container. |
| 49 | child: FlutterLogo(size: 200), |
| 50 | ), |
| 51 | ), |
| 52 | ], |
| 53 | ); |
| 54 | } |
| 55 | } |
| 56 |