| // 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/material.dart'; |
| import 'package:flutter/widgets.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:flutter/gestures.dart'; |
| |
| void main() { |
| testWidgets('kTouchSlop is evaluated in the global coordinate space when scaled up', (WidgetTester tester) async { |
| int doubleTapCount = 0; |
| |
| final Key redContainer = UniqueKey(); |
| await tester.pumpWidget( |
| Center( |
| child: Transform.scale( |
| scale: 2.0, |
| child: GestureDetector( |
| onDoubleTap: () { |
| doubleTapCount++; |
| }, |
| child: Container( |
| key: redContainer, |
| width: 100, |
| height: 150, |
| color: Colors.red, |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| // Move just below kTouchSlop should recognize tap. |
| final Offset center = tester.getCenter(find.byKey(redContainer)); |
| TestGesture gesture = await tester.startGesture(center); |
| await gesture.up(); |
| await tester.pump(kDoubleTapMinTime); |
| gesture = await tester.startGesture(center + const Offset(kDoubleTapSlop - 1, 0)); |
| await gesture.up(); |
| |
| expect(doubleTapCount, 1); |
| |
| doubleTapCount = 0; |
| |
| gesture = await tester.startGesture(center); |
| await gesture.up(); |
| await tester.pump(kDoubleTapMinTime); |
| gesture = await tester.startGesture(center + const Offset(kDoubleTapSlop + 1, 0)); |
| await gesture.up(); |
| |
| expect(doubleTapCount, 0); |
| }); |
| |
| testWidgets('kTouchSlop is evaluated in the global coordinate space when scaled down', (WidgetTester tester) async { |
| int doubleTapCount = 0; |
| |
| final Key redContainer = UniqueKey(); |
| await tester.pumpWidget( |
| Center( |
| child: Transform.scale( |
| scale: 0.5, |
| child: GestureDetector( |
| onDoubleTap: () { |
| doubleTapCount++; |
| }, |
| child: Container( |
| key: redContainer, |
| width: 500, |
| height: 500, |
| color: Colors.red, |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| // Move just below kTouchSlop should recognize tap. |
| final Offset center = tester.getCenter(find.byKey(redContainer)); |
| TestGesture gesture = await tester.startGesture(center); |
| await gesture.up(); |
| await tester.pump(kDoubleTapMinTime); |
| gesture = await tester.startGesture(center + const Offset(kDoubleTapSlop - 1, 0)); |
| await gesture.up(); |
| |
| expect(doubleTapCount, 1); |
| |
| doubleTapCount = 0; |
| |
| gesture = await tester.startGesture(center); |
| await gesture.up(); |
| await tester.pump(kDoubleTapMinTime); |
| gesture = await tester.startGesture(center + const Offset(kDoubleTapSlop + 1, 0)); |
| await gesture.up(); |
| |
| expect(doubleTapCount, 0); |
| }); |
| } |