blob: 6d25448b23d9976acb54baba33459eee6a377efa [file] [log] [blame]
// 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 'dart:ui';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/material.dart';
void main() {
testWidgets("BackdropFilter's cull rect does not shrink", (WidgetTester tester) async {
tester.binding.addTime(const Duration(seconds: 15));
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
body: Stack(
fit: StackFit.expand,
children: <Widget>[
Text('0 0 ' * 10000),
Center(
// ClipRect needed for filtering the 200x200 area instead of the
// whole screen.
child: ClipRect(
child: BackdropFilter(
filter: ImageFilter.blur(
sigmaX: 5.0,
sigmaY: 5.0,
),
child: Container(
alignment: Alignment.center,
width: 200.0,
height: 200.0,
child: const Text('Hello World'),
),
),
),
),
],
),
),
),
);
await expectLater(
find.byType(RepaintBoundary).first,
matchesGoldenFile('backdrop_filter_test.cull_rect.png'),
);
});
}