public void MouseDeviceCaptureTest()
{
Border child1 = new Border {
Background = Brushes.Transparent, Width = 100, Height = 100
};
Border child2 = new Border {
Background = Brushes.Transparent, Width = 100, Height = 100
};
Border child3 = new Border {
Background = Brushes.Transparent, Width = 100, Height = 100
};
StackPanel panel = new StackPanel {
IsRootElement = true
};
panel.Children.Add(child1);
panel.Children.Add(child2);
MouseEventArgs lastArgs = null;
panel.MouseMove += (sender, e) => lastArgs = e;
TestPresentationSource presentationSource = new TestPresentationSource();
presentationSource.RootElement = panel;
panel.Measure(Size.Infinity);
panel.Arrange(new Rect(panel.DesiredSize));
MouseDevice mouseDevice = new MouseDevice(presentationSource);
mouseDevice.Activate();
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
Assert.AreEqual(child1, lastArgs.Source);
Assert.AreEqual(child1, mouseDevice.HitTarget);
Assert.AreEqual(null, mouseDevice.CaptureTarget);
Assert.AreEqual(child1, mouseDevice.Target);
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 150), 0));
Assert.AreEqual(child2, lastArgs.Source);
Assert.AreEqual(child2, mouseDevice.HitTarget);
Assert.AreEqual(null, mouseDevice.CaptureTarget);
Assert.AreEqual(child2, mouseDevice.Target);
mouseDevice.Capture(child2);
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
Assert.AreEqual(child2, lastArgs.Source);
Assert.AreEqual(child1, mouseDevice.HitTarget);
Assert.AreEqual(child2, mouseDevice.CaptureTarget);
Assert.AreEqual(child2, mouseDevice.Target);
mouseDevice.ReleaseCapture();
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
Assert.AreEqual(child1, lastArgs.Source);
Assert.AreEqual(child1, mouseDevice.HitTarget);
Assert.AreEqual(null, mouseDevice.CaptureTarget);
Assert.AreEqual(child1, mouseDevice.Target);
}
public void MouseDeviceButtonTest()
{
Border element = new Border {
Background = Brushes.Transparent, Width = 100, Height = 100, IsRootElement = true
};
element.Measure(Size.Infinity);
element.Arrange(new Rect(element.DesiredSize));
int eventIndex = 0;
int previewMouseDownIndex = 0;
int previewMouseUpIndex = 0;
int mouseDownIndex = 0;
int mouseUpIndex = 0;
element.PreviewMouseDown += (sender, e) => previewMouseDownIndex = ++eventIndex;
element.PreviewMouseUp += (sender, e) => previewMouseUpIndex = ++eventIndex;
element.MouseDown += (sender, e) => mouseDownIndex = ++eventIndex;
element.MouseUp += (sender, e) => mouseUpIndex = ++eventIndex;
TestPresentationSource presentationSource = new TestPresentationSource();
presentationSource.RootElement = element;
MouseDevice mouseDevice = new MouseDevice(presentationSource);
mouseDevice.Activate();
mouseDevice.ProcessRawEvent(new RawMouseButtonEventArgs(MouseButton.Left, MouseButtonState.Pressed, new Point(10, 10), 0));
Assert.AreEqual(MouseButtonState.Pressed, mouseDevice.GetButtonState(MouseButton.Left));
Assert.AreEqual(1, previewMouseDownIndex);
Assert.AreEqual(2, mouseDownIndex);
mouseDevice.ProcessRawEvent(new RawMouseButtonEventArgs(MouseButton.Left, MouseButtonState.Released, new Point(10, 10), 0));
Assert.AreEqual(MouseButtonState.Released, mouseDevice.GetButtonState(MouseButton.Left));
Assert.AreEqual(3, previewMouseUpIndex);
Assert.AreEqual(4, mouseUpIndex);
mouseDevice.ProcessRawEvent(new RawMouseButtonEventArgs(MouseButton.Left, MouseButtonState.Pressed, new Point(10, 10), 0));
Assert.AreEqual(MouseButtonState.Pressed, mouseDevice.GetButtonState(MouseButton.Left));
Assert.AreEqual(5, previewMouseDownIndex);
Assert.AreEqual(6, mouseDownIndex);
mouseDevice.Deactivate();
Assert.AreEqual(MouseButtonState.Released, mouseDevice.GetButtonState(MouseButton.Left));
Assert.AreEqual(7, previewMouseUpIndex);
Assert.AreEqual(8, mouseUpIndex);
}
private void OnContainerMouseUp(object sender, wpf::System.Windows.Input.MouseButtonEventArgs e)
{
e.Handled = MouseDevice.ProcessRawEvent(new RawMouseButtonEventArgs(converter.ConvertBack(e.ChangedButton), converter.ConvertBack(e.ButtonState), converter.ConvertBack(e.GetPosition(container)), GetTimestamp()));
if (e.MouseDevice.Captured == container)
{
e.MouseDevice.Capture(null);
}
}
private void OnMouseWheel(Event e)
{
WheelEvent wheelEvent = (WheelEvent)e;
Point position = new Point(wheelEvent.PageX, wheelEvent.PageY);
int delta = wheelEvent.DeltaY > 0 ? -100 : 100;
if (MouseDevice.ProcessRawEvent(new RawMouseWheelEventArgs(delta, position, GetTimestamp())))
{
e.PreventDefault();
}
}
private void OnMouseUp(Event e)
{
MouseEvent mouseEvent = (MouseEvent)e;
Point position = new Point(mouseEvent.PageX, mouseEvent.PageY);
MouseButton button = converter.ConvertBackMouseButton(mouseEvent.Button);
mouseUpHandled = MouseDevice.ProcessRawEvent(new RawMouseButtonEventArgs(button, MouseButtonState.Released, position, GetTimestamp()));
if (mouseDownHandled || mouseMoveHandled || mouseUpHandled || MouseDevice.CaptureTarget != null)
{
e.PreventDefault();
}
}
private void OnMouseMove(Event e)
{
if (!(e is MouseEvent))
{
return;
}
MouseEvent mouseEvent = (MouseEvent)e;
Point position = new Point(mouseEvent.PageX, mouseEvent.PageY);
mouseMoveHandled = MouseDevice.ProcessRawEvent(new RawMouseEventArgs(position, GetTimestamp()));
if (mouseDownHandled || mouseMoveHandled || MouseDevice.CaptureTarget != null)
{
e.PreventDefault();
}
}
public WpfPresentationSource(UIElement rootElement, IWpfValueConverter converter)
{
this.RootElement = rootElement;
this.converter = converter;
RootElement.IsRootElement = true;
MouseDevice = new MouseDevice(this);
KeyboardDevice = new KeyboardDevice(this);
container = new wpf::System.Windows.Controls.Canvas {
Background = wpf::System.Windows.Media.Brushes.Transparent
};
container.PreviewMouseMove += OnContainerMouseMove;
container.PreviewMouseDown += OnContainerMouseDown;
container.PreviewMouseUp += OnContainerMouseUp;
container.PreviewMouseWheel += (sender, e) => e.Handled = MouseDevice.ProcessRawEvent(new RawMouseWheelEventArgs(e.Delta, converter.ConvertBack(e.GetPosition(container)), GetTimestamp()));
MouseDevice.CursorChanged += (sender, e) => container.Cursor = converter.Convert(MouseDevice.Cursor);
container.Cursor = converter.Convert(MouseDevice.Cursor);
window = new wpf::System.Windows.Window {
UseLayoutRounding = true, Content = container
};
window.Activated += (sender, e) => MouseDevice.Activate();
window.Deactivated += (sender, e) => MouseDevice.Deactivate();
window.SizeChanged += (sender, e) => SetRootElementSize();
window.PreviewKeyDown += (sender, e) => e.Handled = KeyboardDevice.ProcessRawEvent(new RawKeyboardEventArgs(converter.ConvertBack(e.Key), converter.ConvertBack(e.KeyStates), e.IsRepeat, GetTimestamp()));
window.PreviewKeyUp += (sender, e) => e.Handled = KeyboardDevice.ProcessRawEvent(new RawKeyboardEventArgs(converter.ConvertBack(e.Key), converter.ConvertBack(e.KeyStates), e.IsRepeat, GetTimestamp()));
window.Show();
container.Children.Add(((IWpfRenderElement)rootElement.GetRenderElement(WpfRenderElementFactory.Default)).WpfElement);
SetRootElementSize();
MouseDevice.Activate();
KeyboardDevice.Activate();
}
private bool ProcessMouseEvent(RawMouseEventArgs mouseEventArgs)
{
return(Dispatcher.CurrentDispatcher.Invoke(() => MouseDevice.ProcessRawEvent(mouseEventArgs), DispatcherPriority.Input));
}
private void OnContainerMouseMove(object sender, wpf::System.Windows.Input.MouseEventArgs e)
{
e.Handled = MouseDevice.ProcessRawEvent(new RawMouseEventArgs(converter.ConvertBack(e.GetPosition(container)), GetTimestamp()));
}
public void MouseDeviceEnterLeaveTest()
{
Border child1 = new Border {
Background = Brushes.Transparent, Width = 40, Height = 40
};
Border child2 = new Border {
Background = Brushes.Transparent, Width = 40, Height = 40
};
Canvas.SetTop(child1, 20);
Canvas.SetTop(child2, 20);
Canvas.SetLeft(child1, 20);
Canvas.SetLeft(child2, 80);
Canvas canvas = new Canvas {
Background = Brushes.Transparent, Width = 140, Height = 80, Margin = new Thickness(20), IsRootElement = true
};
canvas.Children.Add(child1);
canvas.Children.Add(child2);
canvas.Measure(Size.Infinity);
canvas.Arrange(new Rect(canvas.DesiredSize));
TestPresentationSource presentationSource = new TestPresentationSource();
presentationSource.RootElement = canvas;
MouseDevice mouseDevice = new MouseDevice(presentationSource);
List <object> enterList = new List <object>();
List <object> leaveList = new List <object>();
canvas.MouseEnter += (sender, e) => enterList.Add(sender);
canvas.MouseLeave += (sender, e) => leaveList.Add(sender);
child1.MouseEnter += (sender, e) => enterList.Add(sender);
child1.MouseLeave += (sender, e) => leaveList.Add(sender);
child2.MouseEnter += (sender, e) => enterList.Add(sender);
child2.MouseLeave += (sender, e) => leaveList.Add(sender);
mouseDevice.Activate();
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(10, 10), 0));
Assert.AreEqual(0, enterList.Count());
Assert.AreEqual(0, leaveList.Count());
Assert.IsFalse(canvas.IsMouseOver);
Assert.IsFalse(child1.IsMouseOver);
Assert.IsFalse(child2.IsMouseOver);
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(30, 30), 0));
CollectionAssert.AreEqual(enterList, new object[] { canvas });
Assert.AreEqual(0, leaveList.Count());
Assert.IsTrue(canvas.IsMouseOver);
Assert.IsFalse(child1.IsMouseOver);
Assert.IsFalse(child2.IsMouseOver);
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(60, 60), 0));
CollectionAssert.AreEqual(enterList, new object[] { canvas, child1 });
Assert.AreEqual(0, leaveList.Count());
Assert.IsTrue(canvas.IsMouseOver);
Assert.IsTrue(child1.IsMouseOver);
Assert.IsFalse(child2.IsMouseOver);
mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(120, 60), 0));
CollectionAssert.AreEqual(enterList, new object[] { canvas, child1, child2 });
CollectionAssert.AreEqual(leaveList, new object[] { child1 });
Assert.IsTrue(canvas.IsMouseOver);
Assert.IsFalse(child1.IsMouseOver);
Assert.IsTrue(child2.IsMouseOver);
mouseDevice.Deactivate();
CollectionAssert.AreEqual(enterList, new object[] { canvas, child1, child2 });
CollectionAssert.AreEqual(leaveList, new object[] { child1, child2, canvas });
Assert.IsFalse(canvas.IsMouseOver);
Assert.IsFalse(child1.IsMouseOver);
Assert.IsFalse(child2.IsMouseOver);
mouseDevice.Activate();
CollectionAssert.AreEqual(enterList, new object[] { canvas, child1, child2, canvas, child2 });
CollectionAssert.AreEqual(leaveList, new object[] { child1, child2, canvas });
Assert.IsTrue(canvas.IsMouseOver);
Assert.IsFalse(child1.IsMouseOver);
Assert.IsTrue(child2.IsMouseOver);
}
