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9e673853e5
This requires all AnimationController objects to be given a TickerProvider, a class that can create the Ticker. It also provides some nice mixins for people who want to have their State provide a TickerProvider. And a schedulerTickerProvider for those cases where you just want to see your battery burn. Also, we now enforce destruction order for elements.
90 lines
2.3 KiB
Dart
90 lines
2.3 KiB
Dart
// Copyright 2015 The Chromium 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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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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class TestFlowDelegate extends FlowDelegate {
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TestFlowDelegate({
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Animation<double> startOffset
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}) : startOffset = startOffset, super(repaint: startOffset);
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final Animation<double> startOffset;
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@override
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BoxConstraints getConstraintsForChild(int i, BoxConstraints constraints) {
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return constraints.loosen();
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}
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@override
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void paintChildren(FlowPaintingContext context) {
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double dy = startOffset.value;
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for (int i = 0; i < context.childCount; ++i) {
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context.paintChild(i, transform: new Matrix4.translationValues(0.0, dy, 0.0));
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dy += 0.75 * context.getChildSize(i).height;
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}
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}
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@override
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bool shouldRepaint(TestFlowDelegate oldDelegate) => startOffset == oldDelegate.startOffset;
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}
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void main() {
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testWidgets('Flow control test', (WidgetTester tester) async {
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AnimationController startOffset = new AnimationController.unbounded(
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vsync: tester,
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);
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List<int> log = <int>[];
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Widget buildBox(int i) {
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return new GestureDetector(
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onTap: () {
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log.add(i);
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},
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child: new Container(
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width: 100.0,
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height: 100.0,
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decoration: const BoxDecoration(
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backgroundColor: const Color(0xFF0000FF)
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),
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child: new Text('$i')
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)
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);
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}
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await tester.pumpWidget(
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new Flow(
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delegate: new TestFlowDelegate(startOffset: startOffset),
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children: <Widget>[
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buildBox(0),
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buildBox(1),
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buildBox(2),
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buildBox(3),
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buildBox(4),
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buildBox(5),
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buildBox(6),
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]
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)
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);
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await tester.tap(find.text('0'));
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expect(log, equals(<int>[0]));
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await tester.tap(find.text('1'));
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expect(log, equals(<int>[0, 1]));
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await tester.tap(find.text('2'));
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expect(log, equals(<int>[0, 1, 2]));
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log.clear();
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await tester.tapAt(new Point(20.0, 90.0));
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expect(log, equals(<int>[1]));
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startOffset.value = 50.0;
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await tester.pump();
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log.clear();
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await tester.tapAt(new Point(20.0, 90.0));
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expect(log, equals(<int>[0]));
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});
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}
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