115 lines
3.5 KiB
Dart
115 lines
3.5 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// @dart = 2.8
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import 'dart:ui' show Shader;
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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Shader createShader(Rect bounds) {
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return const LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: <Color>[Color(0x00FFFFFF), Color(0xFFFFFFFF)],
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stops: <double>[0.1, 0.35],
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).createShader(bounds);
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}
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void main() {
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testWidgets('Can be constructed', (WidgetTester tester) async {
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const Widget child = SizedBox(width: 100.0, height: 100.0);
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await tester.pumpWidget(const ShaderMask(child: child, shaderCallback: createShader));
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}, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
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testWidgets('Bounds rect includes offset', (WidgetTester tester) async {
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Rect shaderBounds;
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Shader recordShaderBounds(Rect bounds) {
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shaderBounds = bounds;
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return createShader(bounds);
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}
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final Widget widget = Align(
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alignment: Alignment.center,
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child: SizedBox(
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width: 400.0,
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height: 400.0,
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child: ShaderMask(
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shaderCallback: recordShaderBounds,
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child: const SizedBox(width: 100.0, height: 100.0),
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),
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),
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);
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await tester.pumpWidget(widget);
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// The shader bounds rectangle should reflect the position of the centered SizedBox.
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expect(shaderBounds, equals(const Rect.fromLTWH(0.0, 0.0, 400.0, 400.0)));
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}, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
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testWidgets('Bounds rect includes offset visual inspection', (WidgetTester tester) async {
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final Widget widgetBottomRight = Container(
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width: 400,
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height: 400,
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color: const Color(0xFFFFFFFF),
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child: RepaintBoundary(
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child: Align(
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alignment: Alignment.bottomRight,
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child: ShaderMask(
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shaderCallback: (Rect bounds) => const RadialGradient(
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center: Alignment.center,
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radius: 0.05,
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colors: <Color>[Color(0xFFFF0000), Color(0xFF00FF00)],
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tileMode: TileMode.mirror,
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).createShader(bounds),
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child: Container(
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width: 100,
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height: 100,
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color: const Color(0xFFFFFFFF),
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),
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),
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),
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),
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);
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await tester.pumpWidget(widgetBottomRight);
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await expectLater(
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find.byType(RepaintBoundary),
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matchesGoldenFile('shader_mask.bounds.matches_bottom_right.png'),
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);
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final Widget widgetTopLeft = Container(
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width: 400,
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height: 400,
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color: const Color(0xFFFFFFFF),
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child: RepaintBoundary(
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child: Align(
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alignment: Alignment.topLeft,
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child: ShaderMask(
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shaderCallback: (Rect bounds) => const RadialGradient(
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center: Alignment.center,
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radius: 0.05,
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colors: <Color>[Color(0xFFFF0000), Color(0xFF00FF00)],
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tileMode: TileMode.mirror,
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).createShader(bounds),
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child: Container(
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width: 100,
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height: 100,
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color: const Color(0xFFFFFFFF),
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),
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),
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),
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),
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);
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await tester.pumpWidget(widgetTopLeft);
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await expectLater(
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find.byType(RepaintBoundary),
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matchesGoldenFile('shader_mask.bounds.matches_top_left.png'),
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);
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}, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
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}
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