| // 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 [MaterialApp]. |
| |
| void main() { |
| runApp(const MaterialAppExample()); |
| } |
| |
| enum AnimationStyles { defaultStyle, custom, none } |
| const List<(AnimationStyles, String)> animationStyleSegments = <(AnimationStyles, String)>[ |
| (AnimationStyles.defaultStyle, 'Default'), |
| (AnimationStyles.custom, 'Custom'), |
| (AnimationStyles.none, 'None'), |
| ]; |
| |
| class MaterialAppExample extends StatefulWidget { |
| const MaterialAppExample({super.key}); |
| |
| @override |
| State<MaterialAppExample> createState() => _MaterialAppExampleState(); |
| } |
| |
| class _MaterialAppExampleState extends State<MaterialAppExample> { |
| Set<AnimationStyles> _animationStyleSelection = <AnimationStyles>{AnimationStyles.defaultStyle}; |
| AnimationStyle? _animationStyle; |
| bool isDarkTheme = false; |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| themeAnimationStyle: _animationStyle, |
| themeMode: isDarkTheme ? ThemeMode.dark : ThemeMode.light, |
| theme: ThemeData(colorSchemeSeed: Colors.green), |
| darkTheme: ThemeData( |
| colorSchemeSeed: Colors.green, |
| brightness: Brightness.dark, |
| ), |
| home: Scaffold( |
| body: Center( |
| child: Column( |
| mainAxisAlignment: MainAxisAlignment.center, |
| children: <Widget>[ |
| SegmentedButton<AnimationStyles>( |
| selected: _animationStyleSelection, |
| onSelectionChanged: (Set<AnimationStyles> styles) { |
| setState(() { |
| _animationStyleSelection = styles; |
| switch (styles.first) { |
| case AnimationStyles.defaultStyle: |
| _animationStyle = null; |
| case AnimationStyles.custom: |
| _animationStyle = AnimationStyle( |
| curve: Easing.emphasizedAccelerate, |
| duration: const Duration(seconds: 1), |
| ); |
| case AnimationStyles.none: |
| _animationStyle = AnimationStyle.noAnimation; |
| } |
| }); |
| }, |
| segments: animationStyleSegments |
| .map<ButtonSegment<AnimationStyles>>(((AnimationStyles, String) shirt) { |
| return ButtonSegment<AnimationStyles>(value: shirt.$1, label: Text(shirt.$2)); |
| }) |
| .toList(), |
| ), |
| const SizedBox(height: 10), |
| OutlinedButton.icon( |
| onPressed: () { |
| setState(() { |
| isDarkTheme = !isDarkTheme; |
| }); |
| }, |
| icon: Icon(isDarkTheme ? Icons.wb_sunny : Icons.nightlight_round), |
| label: const Text('Switch Theme Mode'), |
| ), |
| ], |
| ), |
| ), |
| ), |
| ); |
| } |
| } |