| // 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'; |
| |
| void main() => runApp(const SliverDecorationExampleApp()); |
| |
| class SliverDecorationExampleApp extends StatelessWidget { |
| const SliverDecorationExampleApp({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| theme: ThemeData( |
| textTheme: const TextTheme( |
| titleLarge: TextStyle( |
| fontSize: 24, |
| color: Colors.white30, |
| ), |
| ), |
| ), |
| home: Scaffold( |
| appBar: AppBar(title: const Text('SliverDecoration Sample')), |
| body: const SliverDecorationExample(), |
| ), |
| ); |
| } |
| } |
| |
| class SliverDecorationExample extends StatelessWidget { |
| const SliverDecorationExample({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return CustomScrollView( |
| slivers: <Widget>[ |
| DecoratedSliver( |
| key: const ValueKey<String>('radial-gradient'), |
| decoration: const BoxDecoration( |
| gradient: RadialGradient( |
| center: Alignment(-0.5, -0.6), |
| radius: 0.15, |
| colors: <Color>[ |
| Color(0xFFEEEEEE), |
| Color(0xFF111133), |
| ], |
| stops: <double>[0.4, 0.8], |
| ), |
| ), |
| sliver: SliverList( |
| delegate: SliverChildListDelegate( |
| <Widget>[ |
| SizedBox( |
| height: 200.0, |
| child: Center( |
| child: Text( |
| 'A moon on a night sky', |
| style: Theme.of(context).textTheme.titleLarge, |
| ), |
| ), |
| ), |
| ], |
| ), |
| ), |
| ), |
| DecoratedSliver( |
| key: const ValueKey<String>('linear-gradient'), |
| decoration: const BoxDecoration( |
| gradient: LinearGradient( |
| begin: Alignment.topCenter, |
| end: Alignment.bottomCenter, |
| colors: <Color>[ |
| Color(0xFF111133), |
| Color(0xFF1A237E), |
| Color(0xFF283593), |
| Color(0xFF3949AB), |
| Color(0xFF3F51B5), |
| Color(0xFF1976D2), |
| Color(0xFF1E88E5), |
| Color(0xFF42A5F5), |
| ], |
| ), |
| ), |
| sliver: SliverList( |
| delegate: SliverChildListDelegate( |
| <Widget>[ |
| SizedBox( |
| height: 500.0, |
| child: Container( |
| alignment: Alignment.topCenter, |
| padding: const EdgeInsets.only(top: 56.0), |
| child: Text( |
| 'A blue sky', |
| style: Theme.of(context).textTheme.titleLarge, |
| ), |
| ), |
| ), |
| ], |
| ), |
| ), |
| ), |
| ], |
| ); |
| } |
| } |