| // 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_test/flutter_test.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| |
| void main() { |
| testWidgets('Color filter - red', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const RepaintBoundary( |
| child: ColorFiltered( |
| colorFilter: ColorFilter.mode(Colors.red, BlendMode.color), |
| child: Placeholder(), |
| ), |
| ), |
| ); |
| await expectLater( |
| find.byType(ColorFiltered), |
| matchesGoldenFile('color_filter_red.png'), |
| ); |
| }); |
| |
| testWidgets('Color filter - sepia', (WidgetTester tester) async { |
| const ColorFilter sepia = ColorFilter.matrix(<double>[ |
| 0.39, 0.769, 0.189, 0, 0, // |
| 0.349, 0.686, 0.168, 0, 0, // |
| 0.272, 0.534, 0.131, 0, 0, // |
| 0, 0, 0, 1, 0, // |
| ]); |
| await tester.pumpWidget( |
| RepaintBoundary( |
| child: ColorFiltered( |
| colorFilter: sepia, |
| child: MaterialApp( |
| title: 'Flutter Demo', |
| theme: ThemeData(primarySwatch: Colors.blue), |
| home: Scaffold( |
| appBar: AppBar( |
| title: const Text('Sepia ColorFilter Test'), |
| ), |
| body: const Center( |
| child:Text('Hooray!'), |
| ), |
| floatingActionButton: FloatingActionButton( |
| onPressed: () { }, |
| tooltip: 'Increment', |
| child: const Icon(Icons.add), |
| ), |
| ), |
| ), |
| ), |
| ), |
| ); |
| await expectLater( |
| find.byType(ColorFiltered), |
| matchesGoldenFile('color_filter_sepia.png'), |
| ); |
| }); |
| |
| testWidgets('Color filter - reuses its layer', (WidgetTester tester) async { |
| Future<void> pumpWithColor(Color color) async { |
| await tester.pumpWidget( |
| RepaintBoundary( |
| child: ColorFiltered( |
| colorFilter: ColorFilter.mode(color, BlendMode.color), |
| child: const Placeholder(), |
| ), |
| ), |
| ); |
| } |
| |
| await pumpWithColor(Colors.red); |
| final RenderObject renderObject = tester.firstRenderObject(find.byType(ColorFiltered)); |
| final ColorFilterLayer originalLayer = renderObject.debugLayer as ColorFilterLayer; |
| expect(originalLayer, isNotNull); |
| |
| // Change color to force a repaint. |
| await pumpWithColor(Colors.green); |
| expect(renderObject.debugLayer, same(originalLayer)); |
| }); |
| } |