| // Copyright 2016 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 'dart:ui' as ui; |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/gestures.dart'; |
| |
| import '../flutter_test_alternative.dart'; |
| |
| typedef HandleEventCallback = void Function(PointerEvent event); |
| |
| class TestGestureFlutterBinding extends BindingBase with GestureBinding { |
| HandleEventCallback callback; |
| |
| @override |
| void handleEvent(PointerEvent event, HitTestEntry entry) { |
| if (callback != null) |
| callback(event); |
| super.handleEvent(event, entry); |
| } |
| } |
| |
| TestGestureFlutterBinding _binding = TestGestureFlutterBinding(); |
| |
| void ensureTestGestureBinding() { |
| _binding ??= TestGestureFlutterBinding(); |
| assert(GestureBinding.instance != null); |
| } |
| |
| void main() { |
| setUp(ensureTestGestureBinding); |
| |
| test('Pointer tap events', () { |
| const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.down), |
| ui.PointerData(change: ui.PointerChange.up), |
| ] |
| ); |
| |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = events.add; |
| |
| ui.window.onPointerDataPacket(packet); |
| expect(events.length, 2); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerUpEvent)); |
| }); |
| |
| test('Pointer move events', () { |
| const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.down), |
| ui.PointerData(change: ui.PointerChange.move), |
| ui.PointerData(change: ui.PointerChange.up), |
| ] |
| ); |
| |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = events.add; |
| |
| ui.window.onPointerDataPacket(packet); |
| expect(events.length, 3); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerMoveEvent)); |
| expect(events[2].runtimeType, equals(PointerUpEvent)); |
| }); |
| |
| test('Synthetic move events', () { |
| final ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData( |
| change: ui.PointerChange.down, |
| physicalX: 1.0 * ui.window.devicePixelRatio, |
| physicalY: 3.0 * ui.window.devicePixelRatio, |
| ), |
| ui.PointerData( |
| change: ui.PointerChange.up, |
| physicalX: 10.0 * ui.window.devicePixelRatio, |
| physicalY: 15.0 * ui.window.devicePixelRatio, |
| ), |
| ] |
| ); |
| |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = events.add; |
| |
| ui.window.onPointerDataPacket(packet); |
| expect(events.length, 3); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerMoveEvent)); |
| expect(events[1].delta, equals(const Offset(9.0, 12.0))); |
| expect(events[2].runtimeType, equals(PointerUpEvent)); |
| }); |
| |
| test('Pointer cancel events', () { |
| const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.down), |
| ui.PointerData(change: ui.PointerChange.cancel), |
| ] |
| ); |
| |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = events.add; |
| |
| ui.window.onPointerDataPacket(packet); |
| expect(events.length, 2); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerCancelEvent)); |
| }); |
| |
| test('Can cancel pointers', () { |
| const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.down), |
| ui.PointerData(change: ui.PointerChange.up), |
| ] |
| ); |
| |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = (PointerEvent event) { |
| events.add(event); |
| if (event is PointerDownEvent) |
| _binding.cancelPointer(event.pointer); |
| }; |
| |
| ui.window.onPointerDataPacket(packet); |
| expect(events.length, 2); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerCancelEvent)); |
| }); |
| |
| test('Can expand add and hover pointers', () { |
| const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.add, device: 24), |
| ui.PointerData(change: ui.PointerChange.hover, device: 24), |
| ui.PointerData(change: ui.PointerChange.remove, device: 24), |
| ui.PointerData(change: ui.PointerChange.hover, device: 24), |
| ] |
| ); |
| |
| final List<PointerEvent> events = PointerEventConverter.expand( |
| packet.data, ui.window.devicePixelRatio).toList(); |
| |
| expect(events.length, 5); |
| expect(events[0].runtimeType, equals(PointerAddedEvent)); |
| expect(events[1].runtimeType, equals(PointerHoverEvent)); |
| expect(events[2].runtimeType, equals(PointerRemovedEvent)); |
| expect(events[3].runtimeType, equals(PointerAddedEvent)); |
| expect(events[4].runtimeType, equals(PointerHoverEvent)); |
| }); |
| |
| test('Synthetic hover and cancel for misplaced down and remove', () { |
| final ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.add, device: 25, physicalX: 10.0 * ui.window.devicePixelRatio, physicalY: 10.0 * ui.window.devicePixelRatio), |
| ui.PointerData(change: ui.PointerChange.down, device: 25, physicalX: 15.0 * ui.window.devicePixelRatio, physicalY: 17.0 * ui.window.devicePixelRatio), |
| const ui.PointerData(change: ui.PointerChange.remove, device: 25), |
| ] |
| ); |
| |
| final List<PointerEvent> events = PointerEventConverter.expand( |
| packet.data, ui.window.devicePixelRatio).toList(); |
| |
| expect(events.length, 5); |
| expect(events[0].runtimeType, equals(PointerAddedEvent)); |
| expect(events[1].runtimeType, equals(PointerHoverEvent)); |
| expect(events[1].delta, equals(const Offset(5.0, 7.0))); |
| expect(events[2].runtimeType, equals(PointerDownEvent)); |
| expect(events[3].runtimeType, equals(PointerCancelEvent)); |
| expect(events[4].runtimeType, equals(PointerRemovedEvent)); |
| }); |
| } |