mirror of
https://github.com/flutter/flutter.git
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30a501801a
* Implement trackpad gestures in framework * Touch and Pan/Zoom pointers have separate IDs now * Handle trackpad pointer device type * Respect supportedDevices for pan/zoom events * Update after rebase * Fix check failures * Avoid error with very short drags * Address feedback * Refactor drag event handler * Address more feedback * Add some missing punctuation
1177 lines
38 KiB
Dart
1177 lines
38 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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import 'dart:math' as math;
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import 'package:flutter/gestures.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'gesture_tester.dart';
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void main() {
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TestWidgetsFlutterBinding.ensureInitialized();
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testGesture('Should recognize scale gestures', (GestureTester tester) {
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final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
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final TapGestureRecognizer tap = TapGestureRecognizer();
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bool didStartScale = false;
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Offset? updatedFocalPoint;
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scale.onStart = (ScaleStartDetails details) {
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didStartScale = true;
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updatedFocalPoint = details.focalPoint;
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};
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double? updatedScale;
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double? updatedHorizontalScale;
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double? updatedVerticalScale;
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Offset? updatedDelta;
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scale.onUpdate = (ScaleUpdateDetails details) {
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updatedScale = details.scale;
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updatedHorizontalScale = details.horizontalScale;
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updatedVerticalScale = details.verticalScale;
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updatedFocalPoint = details.focalPoint;
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updatedDelta = details.focalPointDelta;
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};
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bool didEndScale = false;
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scale.onEnd = (ScaleEndDetails details) {
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didEndScale = true;
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};
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bool didTap = false;
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tap.onTap = () {
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didTap = true;
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};
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final TestPointer pointer1 = TestPointer();
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final PointerDownEvent down = pointer1.down(Offset.zero);
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scale.addPointer(down);
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tap.addPointer(down);
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tester.closeArena(1);
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expect(didStartScale, isFalse);
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expect(updatedScale, isNull);
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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// One-finger panning
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tester.route(down);
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expect(didStartScale, isFalse);
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expect(updatedScale, isNull);
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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tester.route(pointer1.move(const Offset(20.0, 30.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(20.0, 30.0));
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updatedFocalPoint = null;
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expect(updatedScale, 1.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(20.0, 30.0));
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updatedDelta = null;
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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// Two-finger scaling
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final TestPointer pointer2 = TestPointer(2);
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final PointerDownEvent down2 = pointer2.down(const Offset(10.0, 20.0));
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scale.addPointer(down2);
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tap.addPointer(down2);
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tester.closeArena(2);
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tester.route(down2);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(updatedScale, isNull);
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(didStartScale, isFalse);
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// Zoom in
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tester.route(pointer2.move(const Offset(0.0, 10.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(10.0, 20.0));
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updatedFocalPoint = null;
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expect(updatedScale, 2.0);
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expect(updatedHorizontalScale, 2.0);
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expect(updatedVerticalScale, 2.0);
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expect(updatedDelta, const Offset(-5.0, -5.0));
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updatedScale = null;
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updatedHorizontalScale = null;
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updatedVerticalScale = null;
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updatedDelta = null;
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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// Zoom out
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tester.route(pointer2.move(const Offset(15.0, 25.0)));
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expect(updatedFocalPoint, const Offset(17.5, 27.5));
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expect(updatedScale, 0.5);
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expect(updatedHorizontalScale, 0.5);
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expect(updatedVerticalScale, 0.5);
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expect(updatedDelta, const Offset(7.5, 7.5));
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expect(didTap, isFalse);
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// Horizontal scaling
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tester.route(pointer2.move(const Offset(0.0, 20.0)));
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expect(updatedHorizontalScale, 2.0);
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expect(updatedVerticalScale, 1.0);
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// Vertical scaling
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tester.route(pointer2.move(const Offset(10.0, 10.0)));
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expect(updatedHorizontalScale, 1.0);
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expect(updatedVerticalScale, 2.0);
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expect(updatedDelta, const Offset(5.0, -5.0));
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tester.route(pointer2.move(const Offset(15.0, 25.0)));
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updatedFocalPoint = null;
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updatedScale = null;
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updatedDelta = null;
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// Three-finger scaling
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final TestPointer pointer3 = TestPointer(3);
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final PointerDownEvent down3 = pointer3.down(const Offset(25.0, 35.0));
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scale.addPointer(down3);
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tap.addPointer(down3);
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tester.closeArena(3);
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tester.route(down3);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(updatedScale, isNull);
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(didStartScale, isFalse);
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// Zoom in
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tester.route(pointer3.move(const Offset(55.0, 65.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(30.0, 40.0));
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updatedFocalPoint = null;
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expect(updatedScale, 5.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(10.0, 10.0));
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updatedDelta = null;
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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// Return to original positions but with different fingers
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tester.route(pointer1.move(const Offset(25.0, 35.0)));
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tester.route(pointer2.move(const Offset(20.0, 30.0)));
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tester.route(pointer3.move(const Offset(15.0, 25.0)));
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expect(didStartScale, isFalse);
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expect(updatedFocalPoint, const Offset(20.0, 30.0));
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updatedFocalPoint = null;
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expect(updatedScale, 1.0);
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updatedScale = null;
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expect(updatedDelta!.dx, closeTo(-13.3, 0.1));
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expect(updatedDelta!.dy, closeTo(-13.3, 0.1));
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updatedDelta = null;
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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tester.route(pointer1.up());
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expect(didStartScale, isFalse);
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expect(updatedFocalPoint, isNull);
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expect(updatedScale, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(didTap, isFalse);
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// Continue scaling with two fingers
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tester.route(pointer3.move(const Offset(10.0, 20.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(15.0, 25.0));
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updatedFocalPoint = null;
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expect(updatedScale, 2.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(-2.5, -2.5));
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updatedDelta = null;
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// Continue rotating with two fingers
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tester.route(pointer3.move(const Offset(30.0, 40.0)));
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expect(updatedFocalPoint, const Offset(25.0, 35.0));
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updatedFocalPoint = null;
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expect(updatedScale, 2.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(10.0, 10.0));
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updatedDelta = null;
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tester.route(pointer3.move(const Offset(10.0, 20.0)));
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expect(updatedFocalPoint, const Offset(15.0, 25.0));
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updatedFocalPoint = null;
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expect(updatedScale, 2.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(-10.0, -10.0));
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updatedDelta = null;
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tester.route(pointer2.up());
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expect(didStartScale, isFalse);
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expect(updatedFocalPoint, isNull);
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expect(updatedScale, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(didTap, isFalse);
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// Continue panning with one finger
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tester.route(pointer3.move(Offset.zero));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, Offset.zero);
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updatedFocalPoint = null;
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expect(updatedScale, 1.0);
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updatedScale = null;
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expect(updatedDelta, const Offset(-10.0, -20.0));
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updatedDelta = null;
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// We are done
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tester.route(pointer3.up());
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expect(didStartScale, isFalse);
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expect(updatedFocalPoint, isNull);
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expect(updatedScale, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(didTap, isFalse);
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scale.dispose();
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tap.dispose();
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});
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testGesture('Rejects scale gestures from unallowed device kinds', (GestureTester tester) {
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final ScaleGestureRecognizer scale = ScaleGestureRecognizer(kind: PointerDeviceKind.touch);
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bool didStartScale = false;
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scale.onStart = (ScaleStartDetails details) {
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didStartScale = true;
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};
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double? updatedScale;
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scale.onUpdate = (ScaleUpdateDetails details) {
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updatedScale = details.scale;
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};
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final TestPointer mousePointer = TestPointer(1, PointerDeviceKind.mouse);
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final PointerDownEvent down = mousePointer.down(Offset.zero);
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scale.addPointer(down);
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tester.closeArena(1);
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// One-finger panning
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tester.route(down);
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expect(didStartScale, isFalse);
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expect(updatedScale, isNull);
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// Using a mouse, the scale gesture shouldn't even start.
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tester.route(mousePointer.move(const Offset(20.0, 30.0)));
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expect(didStartScale, isFalse);
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expect(updatedScale, isNull);
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scale.dispose();
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});
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testGesture('Scale gestures starting from allowed device kinds cannot be ended from unallowed devices', (GestureTester tester) {
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final ScaleGestureRecognizer scale = ScaleGestureRecognizer(kind: PointerDeviceKind.touch);
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bool didStartScale = false;
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Offset? updatedFocalPoint;
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scale.onStart = (ScaleStartDetails details) {
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didStartScale = true;
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updatedFocalPoint = details.focalPoint;
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};
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double? updatedScale;
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scale.onUpdate = (ScaleUpdateDetails details) {
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updatedScale = details.scale;
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updatedFocalPoint = details.focalPoint;
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};
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bool didEndScale = false;
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scale.onEnd = (ScaleEndDetails details) {
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didEndScale = true;
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};
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final TestPointer touchPointer = TestPointer();
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final PointerDownEvent down = touchPointer.down(Offset.zero);
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scale.addPointer(down);
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tester.closeArena(1);
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// One-finger panning
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tester.route(down);
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedScale, isNull);
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expect(updatedFocalPoint, Offset.zero);
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expect(didEndScale, isFalse);
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// The gesture can start using one touch finger.
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tester.route(touchPointer.move(const Offset(20.0, 30.0)));
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expect(updatedFocalPoint, const Offset(20.0, 30.0));
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updatedFocalPoint = null;
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expect(updatedScale, 1.0);
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updatedScale = null;
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expect(didEndScale, isFalse);
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// Two-finger scaling
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final TestPointer mousePointer = TestPointer(2, PointerDeviceKind.mouse);
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final PointerDownEvent down2 = mousePointer.down(const Offset(10.0, 20.0));
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scale.addPointer(down2);
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tester.closeArena(2);
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tester.route(down2);
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// Mouse-generated events are ignored.
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expect(didEndScale, isFalse);
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expect(updatedScale, isNull);
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expect(didStartScale, isFalse);
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// Zoom in using a mouse doesn't work either.
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tester.route(mousePointer.move(const Offset(0.0, 10.0)));
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expect(updatedScale, isNull);
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expect(didEndScale, isFalse);
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scale.dispose();
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});
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testGesture('Scale gesture competes with drag', (GestureTester tester) {
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final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
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final HorizontalDragGestureRecognizer drag = HorizontalDragGestureRecognizer();
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final List<String> log = <String>[];
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scale.onStart = (ScaleStartDetails details) { log.add('scale-start'); };
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scale.onUpdate = (ScaleUpdateDetails details) { log.add('scale-update'); };
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scale.onEnd = (ScaleEndDetails details) { log.add('scale-end'); };
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drag.onStart = (DragStartDetails details) { log.add('drag-start'); };
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drag.onEnd = (DragEndDetails details) { log.add('drag-end'); };
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final TestPointer pointer1 = TestPointer();
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final PointerDownEvent down = pointer1.down(const Offset(10.0, 10.0));
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scale.addPointer(down);
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drag.addPointer(down);
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tester.closeArena(1);
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expect(log, isEmpty);
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// Vertical moves are scales.
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tester.route(down);
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expect(log, isEmpty);
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// Scale will win if focal point delta exceeds 18.0*2.
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tester.route(pointer1.move(const Offset(10.0, 50.0))); // Delta of 40.0 exceeds 18.0*2.
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expect(log, equals(<String>['scale-start', 'scale-update']));
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log.clear();
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final TestPointer pointer2 = TestPointer(2);
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final PointerDownEvent down2 = pointer2.down(const Offset(10.0, 20.0));
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scale.addPointer(down2);
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drag.addPointer(down2);
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tester.closeArena(2);
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expect(log, isEmpty);
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// Second pointer joins scale even though it moves horizontally.
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tester.route(down2);
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expect(log, <String>['scale-end']);
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log.clear();
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tester.route(pointer2.move(const Offset(30.0, 20.0)));
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expect(log, equals(<String>['scale-start', 'scale-update']));
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log.clear();
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tester.route(pointer1.up());
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expect(log, equals(<String>['scale-end']));
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log.clear();
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tester.route(pointer2.up());
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expect(log, isEmpty);
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log.clear();
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// Horizontal moves are either drags or scales, depending on which wins first.
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// TODO(ianh): https://github.com/flutter/flutter/issues/11384
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// In this case, we move fast, so that the scale wins. If we moved slowly,
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// the horizontal drag would win, since it was added first.
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final TestPointer pointer3 = TestPointer(3);
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final PointerDownEvent down3 = pointer3.down(const Offset(30.0, 30.0));
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scale.addPointer(down3);
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drag.addPointer(down3);
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tester.closeArena(3);
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tester.route(down3);
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expect(log, isEmpty);
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tester.route(pointer3.move(const Offset(100.0, 30.0)));
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expect(log, equals(<String>['scale-start', 'scale-update']));
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log.clear();
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tester.route(pointer3.up());
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expect(log, equals(<String>['scale-end']));
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log.clear();
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scale.dispose();
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drag.dispose();
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});
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testGesture('Should recognize rotation gestures', (GestureTester tester) {
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final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
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final TapGestureRecognizer tap = TapGestureRecognizer();
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bool didStartScale = false;
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Offset? updatedFocalPoint;
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scale.onStart = (ScaleStartDetails details) {
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didStartScale = true;
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updatedFocalPoint = details.focalPoint;
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};
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double? updatedRotation;
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Offset? updatedDelta;
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scale.onUpdate = (ScaleUpdateDetails details) {
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updatedRotation = details.rotation;
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updatedFocalPoint = details.focalPoint;
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updatedDelta = details.focalPointDelta;
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};
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bool didEndScale = false;
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scale.onEnd = (ScaleEndDetails details) {
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didEndScale = true;
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};
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bool didTap = false;
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tap.onTap = () {
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didTap = true;
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};
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final TestPointer pointer1 = TestPointer();
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final PointerDownEvent down = pointer1.down(Offset.zero);
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scale.addPointer(down);
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tap.addPointer(down);
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tester.closeArena(1);
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expect(didStartScale, isFalse);
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expect(updatedRotation, isNull);
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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tester.route(down);
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tester.route(pointer1.move(const Offset(20.0, 30.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(20.0, 30.0));
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updatedFocalPoint = null;
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expect(updatedDelta, const Offset(20.0, 30.0));
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updatedDelta = null;
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expect(updatedRotation, 0.0);
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updatedRotation = null;
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expect(didEndScale, isFalse);
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expect(didTap, isFalse);
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// Two-finger scaling
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final TestPointer pointer2 = TestPointer(2);
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final PointerDownEvent down2 = pointer2.down(const Offset(30.0, 40.0));
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scale.addPointer(down2);
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tap.addPointer(down2);
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tester.closeArena(2);
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tester.route(down2);
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expect(didEndScale, isTrue);
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didEndScale = false;
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expect(updatedFocalPoint, isNull);
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expect(updatedDelta, isNull);
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expect(updatedRotation, isNull);
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expect(didStartScale, isFalse);
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// Zoom in
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tester.route(pointer2.move(const Offset(40.0, 50.0)));
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expect(didStartScale, isTrue);
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didStartScale = false;
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expect(updatedFocalPoint, const Offset(30.0, 40.0));
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updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(5.0, 5.0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, 0.0);
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
expect(didTap, isFalse);
|
|
|
|
// Rotation
|
|
tester.route(pointer2.move(const Offset(0.0, 10.0)));
|
|
expect(updatedFocalPoint, const Offset(10.0, 20.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(-20.0, -20.0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, math.pi);
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
expect(didTap, isFalse);
|
|
|
|
// Three-finger scaling
|
|
final TestPointer pointer3 = TestPointer(3);
|
|
final PointerDownEvent down3 = pointer3.down(const Offset(25.0, 35.0));
|
|
scale.addPointer(down3);
|
|
tap.addPointer(down3);
|
|
tester.closeArena(3);
|
|
tester.route(down3);
|
|
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(updatedRotation, isNull);
|
|
expect(didStartScale, isFalse);
|
|
|
|
// Zoom in
|
|
tester.route(pointer3.move(const Offset(55.0, 65.0)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(25.0, 35.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(10.0, 10.0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, 0.0);
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
expect(didTap, isFalse);
|
|
|
|
// Return to original positions but with different fingers
|
|
tester.route(pointer1.move(const Offset(25.0, 35.0)));
|
|
tester.route(pointer2.move(const Offset(20.0, 30.0)));
|
|
tester.route(pointer3.move(const Offset(15.0, 25.0)));
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, const Offset(20.0, 30.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta!.dx, closeTo(-13.3, 0.1));
|
|
expect(updatedDelta!.dy, closeTo(-13.3, 0.1));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, 0.0);
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
expect(didTap, isFalse);
|
|
|
|
tester.route(pointer1.up());
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(updatedRotation, isNull);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
expect(didTap, isFalse);
|
|
|
|
// Continue scaling with two fingers
|
|
tester.route(pointer3.move(const Offset(10.0, 20.0)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(15.0, 25.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(-2.5, -2.5));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, 0.0);
|
|
updatedRotation = null;
|
|
|
|
// Continue rotating with two fingers
|
|
tester.route(pointer3.move(const Offset(30.0, 40.0)));
|
|
expect(updatedFocalPoint, const Offset(25.0, 35.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(10.0, 10.0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, - math.pi);
|
|
updatedRotation = null;
|
|
tester.route(pointer3.move(const Offset(10.0, 20.0)));
|
|
expect(updatedFocalPoint, const Offset(15.0, 25.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedDelta, const Offset(-10.0, -10.0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, 0.0);
|
|
updatedRotation = null;
|
|
|
|
tester.route(pointer2.up());
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(updatedRotation, isNull);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
expect(didTap, isFalse);
|
|
|
|
// We are done
|
|
tester.route(pointer3.up());
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(updatedRotation, isNull);
|
|
expect(didEndScale, isFalse);
|
|
didEndScale = false;
|
|
expect(didTap, isFalse);
|
|
|
|
scale.dispose();
|
|
tap.dispose();
|
|
});
|
|
|
|
// Regressing test for https://github.com/flutter/flutter/issues/78941
|
|
testGesture('First rotation test', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
|
|
|
|
double? updatedRotation;
|
|
scale.onUpdate = (ScaleUpdateDetails details) {
|
|
updatedRotation = details.rotation;
|
|
};
|
|
|
|
final TestPointer pointer1 = TestPointer();
|
|
final PointerDownEvent down = pointer1.down(Offset.zero);
|
|
scale.addPointer(down);
|
|
tester.closeArena(1);
|
|
tester.route(down);
|
|
|
|
final TestPointer pointer2 = TestPointer(2);
|
|
final PointerDownEvent down2 = pointer2.down(const Offset(10.0, 10.0));
|
|
scale.addPointer(down2);
|
|
tester.closeArena(2);
|
|
tester.route(down2);
|
|
|
|
expect(updatedRotation, isNull);
|
|
|
|
// Rotation 45°.
|
|
tester.route(pointer2.move(const Offset(0.0, 10.0)));
|
|
expect(updatedRotation, math.pi / 4.0);
|
|
});
|
|
|
|
testGesture('Scale gestures pointer count test', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
|
|
|
|
int pointerCountOfStart = 0;
|
|
scale.onStart = (ScaleStartDetails details) => pointerCountOfStart = details.pointerCount;
|
|
|
|
int pointerCountOfUpdate = 0;
|
|
scale.onUpdate = (ScaleUpdateDetails details) => pointerCountOfUpdate = details.pointerCount;
|
|
|
|
int pointerCountOfEnd = 0;
|
|
scale.onEnd = (ScaleEndDetails details) => pointerCountOfEnd = details.pointerCount;
|
|
|
|
final TestPointer pointer1 = TestPointer();
|
|
final PointerDownEvent down = pointer1.down(Offset.zero);
|
|
scale.addPointer(down);
|
|
tester.closeArena(1);
|
|
|
|
// One-finger panning
|
|
tester.route(down);
|
|
// One pointer in contact with the screen now.
|
|
expect(pointerCountOfStart, 1);
|
|
tester.route(pointer1.move(const Offset(20.0, 30.0)));
|
|
expect(pointerCountOfUpdate, 1);
|
|
|
|
// Two-finger scaling
|
|
final TestPointer pointer2 = TestPointer(2);
|
|
final PointerDownEvent down2 = pointer2.down(const Offset(10.0, 20.0));
|
|
scale.addPointer(down2);
|
|
tester.closeArena(2);
|
|
tester.route(down2);
|
|
// Two pointers in contact with the screen now.
|
|
expect(pointerCountOfEnd, 2); // Additional pointer down will trigger an end event.
|
|
|
|
tester.route(pointer2.move(const Offset(0.0, 10.0)));
|
|
expect(pointerCountOfStart, 2); // The new pointer move will trigger a start event.
|
|
expect(pointerCountOfUpdate, 2);
|
|
|
|
tester.route(pointer1.up());
|
|
// One pointer in contact with the screen now.
|
|
expect(pointerCountOfEnd, 1);
|
|
|
|
tester.route(pointer2.move(const Offset(0.0, 10.0)));
|
|
expect(pointerCountOfStart, 1);
|
|
expect(pointerCountOfUpdate, 1);
|
|
|
|
tester.route(pointer2.up());
|
|
// No pointer in contact with the screen now.
|
|
expect(pointerCountOfEnd, 0);
|
|
|
|
scale.dispose();
|
|
});
|
|
|
|
testGesture('Should recognize scale gestures from pointer pan/zoom events', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
|
|
final HorizontalDragGestureRecognizer drag = HorizontalDragGestureRecognizer();
|
|
|
|
bool didStartScale = false;
|
|
Offset? updatedFocalPoint;
|
|
scale.onStart = (ScaleStartDetails details) {
|
|
didStartScale = true;
|
|
updatedFocalPoint = details.focalPoint;
|
|
};
|
|
|
|
double? updatedScale;
|
|
double? updatedHorizontalScale;
|
|
double? updatedVerticalScale;
|
|
Offset? updatedDelta;
|
|
scale.onUpdate = (ScaleUpdateDetails details) {
|
|
updatedScale = details.scale;
|
|
updatedHorizontalScale = details.horizontalScale;
|
|
updatedVerticalScale = details.verticalScale;
|
|
updatedFocalPoint = details.focalPoint;
|
|
updatedDelta = details.focalPointDelta;
|
|
};
|
|
|
|
bool didEndScale = false;
|
|
scale.onEnd = (ScaleEndDetails details) {
|
|
didEndScale = true;
|
|
};
|
|
|
|
final TestPointer pointer1 = TestPointer(2);
|
|
|
|
final PointerPanZoomStartEvent start = pointer1.panZoomStart(Offset.zero);
|
|
scale.addPointerPanZoom(start);
|
|
drag.addPointerPanZoom(start);
|
|
|
|
tester.closeArena(2);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Panning.
|
|
tester.route(start);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, pan: const Offset(20.0, 30.0)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(20.0, 30.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, 1.0);
|
|
updatedScale = null;
|
|
expect(updatedDelta, const Offset(20.0, 30.0));
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Zoom in.
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, pan: const Offset(20.0, 30.0), scale: 2.0));
|
|
expect(updatedFocalPoint, const Offset(20.0, 30.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, 2.0);
|
|
expect(updatedHorizontalScale, 2.0);
|
|
expect(updatedVerticalScale, 2.0);
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedScale = null;
|
|
updatedHorizontalScale = null;
|
|
updatedVerticalScale = null;
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Zoom out.
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, pan: const Offset(20.0, 30.0)));
|
|
expect(updatedFocalPoint, const Offset(20.0, 30.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, 1.0);
|
|
expect(updatedHorizontalScale, 1.0);
|
|
expect(updatedVerticalScale, 1.0);
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedScale = null;
|
|
updatedHorizontalScale = null;
|
|
updatedVerticalScale = null;
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// We are done.
|
|
tester.route(pointer1.panZoomEnd());
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
|
|
scale.dispose();
|
|
});
|
|
|
|
testGesture('Pointer pan/zooms should work alongside touches', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
|
|
final HorizontalDragGestureRecognizer drag = HorizontalDragGestureRecognizer();
|
|
|
|
bool didStartScale = false;
|
|
Offset? updatedFocalPoint;
|
|
scale.onStart = (ScaleStartDetails details) {
|
|
didStartScale = true;
|
|
updatedFocalPoint = details.focalPoint;
|
|
};
|
|
|
|
double? updatedScale;
|
|
double? updatedHorizontalScale;
|
|
double? updatedVerticalScale;
|
|
Offset? updatedDelta;
|
|
double? updatedRotation;
|
|
scale.onUpdate = (ScaleUpdateDetails details) {
|
|
updatedScale = details.scale;
|
|
updatedHorizontalScale = details.horizontalScale;
|
|
updatedVerticalScale = details.verticalScale;
|
|
updatedFocalPoint = details.focalPoint;
|
|
updatedDelta = details.focalPointDelta;
|
|
updatedRotation = details.rotation;
|
|
};
|
|
|
|
bool didEndScale = false;
|
|
scale.onEnd = (ScaleEndDetails details) {
|
|
didEndScale = true;
|
|
};
|
|
|
|
final TestPointer touchPointer1 = TestPointer(2);
|
|
final TestPointer touchPointer2 = TestPointer(3);
|
|
final TestPointer panZoomPointer = TestPointer(4);
|
|
|
|
final PointerPanZoomStartEvent panZoomStart = panZoomPointer.panZoomStart(Offset.zero);
|
|
scale.addPointerPanZoom(panZoomStart);
|
|
drag.addPointerPanZoom(panZoomStart);
|
|
|
|
tester.closeArena(4);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Panning starting with trackpad.
|
|
tester.route(panZoomStart);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
tester.route(panZoomPointer.panZoomUpdate(Offset.zero, pan: const Offset(40, 40)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(40.0, 40.0));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, 1.0);
|
|
updatedScale = null;
|
|
expect(updatedDelta, const Offset(40.0, 40.0));
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Add a touch pointer.
|
|
final PointerDownEvent touchStart1 = touchPointer1.down(const Offset(40, 40));
|
|
scale.addPointer(touchStart1);
|
|
drag.addPointer(touchStart1);
|
|
tester.closeArena(2);
|
|
tester.route(touchStart1);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
|
|
tester.route(touchPointer1.move(const Offset(10, 10)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(25, 25));
|
|
updatedFocalPoint = null;
|
|
// 1 down pointer + pointer pan/zoom should not scale, only pan.
|
|
expect(updatedScale, 1.0);
|
|
updatedScale = null;
|
|
expect(updatedDelta, const Offset(-15, -15));
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Add a second touch pointer.
|
|
final PointerDownEvent touchStart2 = touchPointer2.down(const Offset(10, 40));
|
|
scale.addPointer(touchStart2);
|
|
drag.addPointer(touchStart2);
|
|
tester.closeArena(3);
|
|
tester.route(touchStart2);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
|
|
// Move the second pointer to cause pan, zoom, and rotation.
|
|
tester.route(touchPointer2.move(const Offset(40, 40)));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, const Offset(30, 30));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, math.sqrt(2));
|
|
updatedScale = null;
|
|
expect(updatedHorizontalScale, 1.0);
|
|
updatedHorizontalScale = null;
|
|
expect(updatedVerticalScale, 1.0);
|
|
updatedVerticalScale = null;
|
|
expect(updatedDelta, const Offset(10, 0));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, -math.pi / 4);
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Change the scale and angle of the pan/zoom to test combining.
|
|
// Scale should be multiplied together.
|
|
// Rotation angle should be added together.
|
|
tester.route(panZoomPointer.panZoomUpdate(Offset.zero, pan: const Offset(40, 40), scale: math.sqrt(2), rotation: math.pi / 3));
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, const Offset(30, 30));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, closeTo(2, 0.0001));
|
|
updatedScale = null;
|
|
expect(updatedHorizontalScale, math.sqrt(2));
|
|
updatedHorizontalScale = null;
|
|
expect(updatedVerticalScale, math.sqrt(2));
|
|
updatedVerticalScale = null;
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedDelta = null;
|
|
expect(updatedRotation, closeTo(math.pi / 12, 0.0001));
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Move the pan/zoom origin to test combining.
|
|
tester.route(panZoomPointer.panZoomUpdate(const Offset(15, 15), pan: const Offset(55, 55), scale: math.sqrt(2), rotation: math.pi / 3));
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, const Offset(40, 40));
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, closeTo(2, 0.0001));
|
|
updatedScale = null;
|
|
expect(updatedDelta, const Offset(10, 10));
|
|
updatedDelta = null;
|
|
expect(updatedRotation, closeTo(math.pi / 12, 0.0001));
|
|
updatedRotation = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// We are done.
|
|
tester.route(panZoomPointer.panZoomEnd());
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
expect(updatedScale, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didStartScale, isFalse);
|
|
tester.route(touchPointer1.up());
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(didEndScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didStartScale, isFalse);
|
|
tester.route(touchPointer2.up());
|
|
expect(didEndScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didStartScale, isFalse);
|
|
|
|
scale.dispose();
|
|
});
|
|
|
|
testGesture('Scale gesture competes with drag for trackpad gesture', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer();
|
|
final HorizontalDragGestureRecognizer drag = HorizontalDragGestureRecognizer();
|
|
|
|
final List<String> log = <String>[];
|
|
|
|
scale.onStart = (ScaleStartDetails details) { log.add('scale-start'); };
|
|
scale.onUpdate = (ScaleUpdateDetails details) { log.add('scale-update'); };
|
|
scale.onEnd = (ScaleEndDetails details) { log.add('scale-end'); };
|
|
|
|
drag.onStart = (DragStartDetails details) { log.add('drag-start'); };
|
|
drag.onEnd = (DragEndDetails details) { log.add('drag-end'); };
|
|
|
|
final TestPointer pointer1 = TestPointer(2);
|
|
|
|
final PointerPanZoomStartEvent down = pointer1.panZoomStart(const Offset(10.0, 10.0));
|
|
scale.addPointerPanZoom(down);
|
|
drag.addPointerPanZoom(down);
|
|
|
|
tester.closeArena(2);
|
|
expect(log, isEmpty);
|
|
|
|
// Vertical moves are scales.
|
|
tester.route(down);
|
|
expect(log, isEmpty);
|
|
|
|
// Scale will win if focal point delta exceeds 18.0*2.
|
|
|
|
tester.route(pointer1.panZoomUpdate(const Offset(10.0, 10.0), pan: const Offset(10.0, 40.0))); // delta of 40.0 exceeds 18.0*2.
|
|
expect(log, equals(<String>['scale-start', 'scale-update']));
|
|
log.clear();
|
|
|
|
final TestPointer pointer2 = TestPointer(3);
|
|
final PointerPanZoomStartEvent down2 = pointer2.panZoomStart(const Offset(10.0, 20.0));
|
|
scale.addPointerPanZoom(down2);
|
|
drag.addPointerPanZoom(down2);
|
|
|
|
tester.closeArena(3);
|
|
expect(log, isEmpty);
|
|
|
|
// Second pointer joins scale even though it moves horizontally.
|
|
tester.route(down2);
|
|
expect(log, <String>['scale-end']);
|
|
log.clear();
|
|
|
|
tester.route(pointer2.panZoomUpdate(const Offset(10.0, 20.0), pan: const Offset(20.0, 0.0)));
|
|
expect(log, equals(<String>['scale-start', 'scale-update']));
|
|
log.clear();
|
|
|
|
tester.route(pointer1.panZoomEnd());
|
|
expect(log, equals(<String>['scale-end']));
|
|
log.clear();
|
|
|
|
tester.route(pointer2.panZoomEnd());
|
|
expect(log, isEmpty);
|
|
log.clear();
|
|
|
|
// Horizontal moves are either drags or scales, depending on which wins first.
|
|
// TODO(ianh): https://github.com/flutter/flutter/issues/11384
|
|
// In this case, we move fast, so that the scale wins. If we moved slowly,
|
|
// the horizontal drag would win, since it was added first.
|
|
final TestPointer pointer3 = TestPointer(4);
|
|
final PointerPanZoomStartEvent down3 = pointer3.panZoomStart(const Offset(30.0, 30.0));
|
|
scale.addPointerPanZoom(down3);
|
|
drag.addPointerPanZoom(down3);
|
|
tester.closeArena(4);
|
|
tester.route(down3);
|
|
|
|
expect(log, isEmpty);
|
|
|
|
tester.route(pointer3.panZoomUpdate(const Offset(30.0, 30.0), pan: const Offset(70.0, 0.0)));
|
|
expect(log, equals(<String>['scale-start', 'scale-update']));
|
|
log.clear();
|
|
|
|
tester.route(pointer3.panZoomEnd());
|
|
expect(log, equals(<String>['scale-end']));
|
|
log.clear();
|
|
|
|
scale.dispose();
|
|
drag.dispose();
|
|
});
|
|
|
|
testGesture('Scale gesture from pan/zoom events properly handles DragStartBehavior.start', (GestureTester tester) {
|
|
final ScaleGestureRecognizer scale = ScaleGestureRecognizer(dragStartBehavior: DragStartBehavior.start);
|
|
final HorizontalDragGestureRecognizer drag = HorizontalDragGestureRecognizer();
|
|
|
|
bool didStartScale = false;
|
|
Offset? updatedFocalPoint;
|
|
scale.onStart = (ScaleStartDetails details) {
|
|
didStartScale = true;
|
|
updatedFocalPoint = details.focalPoint;
|
|
};
|
|
|
|
double? updatedScale;
|
|
double? updatedHorizontalScale;
|
|
double? updatedVerticalScale;
|
|
double? updatedRotation;
|
|
Offset? updatedDelta;
|
|
scale.onUpdate = (ScaleUpdateDetails details) {
|
|
updatedScale = details.scale;
|
|
updatedHorizontalScale = details.horizontalScale;
|
|
updatedVerticalScale = details.verticalScale;
|
|
updatedFocalPoint = details.focalPoint;
|
|
updatedRotation = details.rotation;
|
|
updatedDelta = details.focalPointDelta;
|
|
};
|
|
|
|
bool didEndScale = false;
|
|
scale.onEnd = (ScaleEndDetails details) {
|
|
didEndScale = true;
|
|
};
|
|
|
|
final TestPointer pointer1 = TestPointer(2);
|
|
|
|
final PointerPanZoomStartEvent start = pointer1.panZoomStart(Offset.zero);
|
|
scale.addPointerPanZoom(start);
|
|
drag.addPointerPanZoom(start);
|
|
|
|
tester.closeArena(2);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
tester.route(start);
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Zoom enough to win the gesture.
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, scale: 1.1, rotation: 1));
|
|
expect(didStartScale, isTrue);
|
|
didStartScale = false;
|
|
expect(updatedFocalPoint, Offset.zero);
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, 1.0);
|
|
updatedScale = null;
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Zoom in - should be relative to 1.1.
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, scale: 1.21, rotation: 1.5));
|
|
expect(updatedFocalPoint, Offset.zero);
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, closeTo(1.1, 0.0001));
|
|
expect(updatedHorizontalScale, closeTo(1.1, 0.0001));
|
|
expect(updatedVerticalScale, closeTo(1.1, 0.0001));
|
|
expect(updatedRotation, 0.5);
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedScale = null;
|
|
updatedHorizontalScale = null;
|
|
updatedVerticalScale = null;
|
|
updatedRotation = null;
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// Zoom out - should be relative to 1.1.
|
|
tester.route(pointer1.panZoomUpdate(Offset.zero, scale: 0.99, rotation: 1.0));
|
|
expect(updatedFocalPoint, Offset.zero);
|
|
updatedFocalPoint = null;
|
|
expect(updatedScale, closeTo(0.9, 0.0001));
|
|
expect(updatedHorizontalScale, closeTo(0.9, 0.0001));
|
|
expect(updatedVerticalScale, closeTo(0.9, 0.0001));
|
|
expect(updatedRotation, 0.0);
|
|
expect(updatedDelta, Offset.zero);
|
|
updatedScale = null;
|
|
updatedHorizontalScale = null;
|
|
updatedVerticalScale = null;
|
|
updatedDelta = null;
|
|
expect(didEndScale, isFalse);
|
|
|
|
// We are done.
|
|
tester.route(pointer1.panZoomEnd());
|
|
expect(didStartScale, isFalse);
|
|
expect(updatedFocalPoint, isNull);
|
|
expect(updatedScale, isNull);
|
|
expect(updatedDelta, isNull);
|
|
expect(didEndScale, isTrue);
|
|
didEndScale = false;
|
|
|
|
scale.dispose();
|
|
});
|
|
|
|
testWidgets('ScaleGestureRecognizer asserts when kind and supportedDevices are both set', (WidgetTester tester) async {
|
|
expect(
|
|
() {
|
|
ScaleGestureRecognizer(
|
|
kind: PointerDeviceKind.touch,
|
|
supportedDevices: <PointerDeviceKind>{ PointerDeviceKind.touch },
|
|
);
|
|
},
|
|
throwsA(
|
|
isA<AssertionError>().having((AssertionError error) => error.toString(),
|
|
'description', contains('kind == null || supportedDevices == null')),
|
|
),
|
|
);
|
|
});
|
|
}
|