| // 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. |
| |
| // Flutter code sample for [MouseRegion.onExit]. |
| |
| import 'package:flutter/material.dart'; |
| |
| void main() => runApp(const MouseRegionApp()); |
| |
| class MouseRegionApp extends StatelessWidget { |
| const MouseRegionApp({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| home: Scaffold( |
| appBar: AppBar(title: const Text('MouseRegion.onExit Sample')), |
| body: const Center( |
| child: MouseRegionExample(), |
| ), |
| ), |
| ); |
| } |
| } |
| |
| class MouseRegionExample extends StatefulWidget { |
| const MouseRegionExample({super.key}); |
| |
| @override |
| State<MouseRegionExample> createState() => _MouseRegionExampleState(); |
| } |
| |
| class _MouseRegionExampleState extends State<MouseRegionExample> { |
| bool hovered = false; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Container( |
| height: 100, |
| width: 100, |
| decoration: BoxDecoration(color: hovered ? Colors.yellow : Colors.blue), |
| child: MouseRegion( |
| onEnter: (_) { |
| setState(() { |
| hovered = true; |
| }); |
| }, |
| onExit: (_) { |
| setState(() { |
| hovered = false; |
| }); |
| }, |
| ), |
| ); |
| } |
| } |