86 lines
2.3 KiB
Dart
86 lines
2.3 KiB
Dart
// Copyright 2015 The Chromium 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/widgets.dart';
|
|
|
|
class TestFlowDelegate extends FlowDelegate {
|
|
TestFlowDelegate({this.startOffset}) : super(repaint: startOffset);
|
|
|
|
final Animation<double> startOffset;
|
|
|
|
@override
|
|
BoxConstraints getConstraintsForChild(int i, BoxConstraints constraints) {
|
|
return constraints.loosen();
|
|
}
|
|
|
|
@override
|
|
void paintChildren(FlowPaintingContext context) {
|
|
double dy = startOffset.value;
|
|
for (int i = 0; i < context.childCount; ++i) {
|
|
context.paintChild(i, transform: new Matrix4.translationValues(0.0, dy, 0.0));
|
|
dy += 0.75 * context.getChildSize(i).height;
|
|
}
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(TestFlowDelegate oldDelegate) => startOffset == oldDelegate.startOffset;
|
|
}
|
|
|
|
void main() {
|
|
testWidgets('Flow control test', (WidgetTester tester) async {
|
|
final AnimationController startOffset = new AnimationController.unbounded(
|
|
vsync: tester,
|
|
);
|
|
final List<int> log = <int>[];
|
|
|
|
Widget buildBox(int i) {
|
|
return new GestureDetector(
|
|
onTap: () {
|
|
log.add(i);
|
|
},
|
|
child: new Container(
|
|
width: 100.0,
|
|
height: 100.0,
|
|
color: const Color(0xFF0000FF),
|
|
child: new Text('$i', textDirection: TextDirection.ltr)
|
|
)
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
new Flow(
|
|
delegate: new TestFlowDelegate(startOffset: startOffset),
|
|
children: <Widget>[
|
|
buildBox(0),
|
|
buildBox(1),
|
|
buildBox(2),
|
|
buildBox(3),
|
|
buildBox(4),
|
|
buildBox(5),
|
|
buildBox(6),
|
|
]
|
|
)
|
|
);
|
|
|
|
await tester.tap(find.text('0'));
|
|
expect(log, equals(<int>[0]));
|
|
await tester.tap(find.text('1'));
|
|
expect(log, equals(<int>[0, 1]));
|
|
await tester.tap(find.text('2'));
|
|
expect(log, equals(<int>[0, 1, 2]));
|
|
|
|
log.clear();
|
|
await tester.tapAt(const Offset(20.0, 90.0));
|
|
expect(log, equals(<int>[1]));
|
|
|
|
startOffset.value = 50.0;
|
|
await tester.pump();
|
|
|
|
log.clear();
|
|
await tester.tapAt(const Offset(20.0, 90.0));
|
|
expect(log, equals(<int>[0]));
|
|
});
|
|
}
|