| // 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/rendering.dart'; |
| import 'package:flutter/widgets.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('InvertColors', (WidgetTester tester) async { |
| await tester.pumpWidget(const RepaintBoundary( |
| child: SizedBox( |
| width: 200.0, |
| height: 200.0, |
| child: InvertColorTestWidget( |
| color: Color.fromRGBO(255, 0, 0, 1.0), |
| ), |
| ), |
| )); |
| |
| await expectLater( |
| find.byType(RepaintBoundary), |
| matchesGoldenFile('invert_colors_test.0.png'), |
| ); |
| }); |
| |
| testWidgets('InvertColors and ColorFilter', (WidgetTester tester) async { |
| await tester.pumpWidget(const RepaintBoundary( |
| child: SizedBox( |
| width: 200.0, |
| height: 200.0, |
| child: InvertColorTestWidget( |
| color: Color.fromRGBO(255, 0, 0, 1.0), |
| filter: ColorFilter.mode(Color.fromRGBO(0, 255, 0, 0.5), BlendMode.plus), |
| ), |
| ), |
| )); |
| |
| await expectLater( |
| find.byType(RepaintBoundary), |
| matchesGoldenFile('invert_colors_test.1.png'), |
| ); |
| }); |
| } |
| |
| // Draws a rectangle sized by the parent widget with [color], [colorFilter], |
| // and [invertColors] applied for testing the invert colors. |
| class InvertColorTestWidget extends LeafRenderObjectWidget { |
| const InvertColorTestWidget({ |
| this.color, |
| this.filter, |
| Key key, |
| }) : super(key: key); |
| |
| final Color color; |
| final ColorFilter filter; |
| |
| @override |
| RenderInvertColorTest createRenderObject(BuildContext context) { |
| return RenderInvertColorTest(color, filter); |
| } |
| @override |
| void updateRenderObject(BuildContext context, covariant RenderInvertColorTest renderObject) { |
| renderObject |
| ..color = color |
| ..filter = filter; |
| } |
| |
| } |
| |
| class RenderInvertColorTest extends RenderProxyBox { |
| RenderInvertColorTest(this._color, this._filter); |
| |
| Color get color => _color; |
| Color _color; |
| set color(Color value) { |
| if (color == value) |
| return; |
| _color = value; |
| markNeedsPaint(); |
| } |
| |
| |
| ColorFilter get filter => _filter; |
| ColorFilter _filter; |
| set filter(ColorFilter value) { |
| if (filter == value) |
| return; |
| _filter = value; |
| markNeedsPaint(); |
| } |
| |
| @override |
| void paint(PaintingContext context, Offset offset) { |
| final Paint paint = Paint() |
| ..style = PaintingStyle.fill |
| ..color = color |
| ..colorFilter = filter |
| ..invertColors = true; |
| context.canvas.drawRect(offset & size, paint); |
| } |
| } |