blob: 8db85da5919d5b49e89bd90c2bac00b6d5e471f6 [file] [log] [blame]
// 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));
});
}