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);
}
private void CaptureMouse()
{
if (!_mouseCaptured)
{
_mouseDevice.Capture(_wpfTextView.VisualElement);
_mouseCaptured = true;
_scrollTimer.IsEnabled = true;
}
}
//</SnippetMouseClickCountDoubleClick>
private void CaptureMouseOnMouseEnter(object sender, MouseEventArgs e)
{
MouseDevice mDevice = e.MouseDevice;
bool captureResult;
captureResult = mDevice.Capture(captureTarget);
if (captureResult == true)
{
captureTarget.BorderBrush = Brushes.Red;
}
}
protected virtual bool BeginDragOperation(InputDevice deviceToCapture, Point initialDragPosition)
{
// This is a helper method that provides for easy dragging of the
// LoopPanel's Offset using the Mouse. It can be overridden to provide
// support for other input devices like a Surface Contact.
bool result = false;
if (CapturedDevice == null)
{
_lastDragPosition = initialDragPosition;
if (deviceToCapture is MouseDevice)
{
MouseDevice md = deviceToCapture as MouseDevice;
if (md.Captured != null)
{
md.Captured.ReleaseMouseCapture();
}
// By default, we support dragging via the left mouse button.
// If another button is required for dragging, this method should be overridden.
if (md.Captured == null && md.LeftButton == MouseButtonState.Pressed)
{
CapturedDevice = md;
md.Capture(this);
result = true;
}
}
else if (deviceToCapture is TouchDevice)
{
TouchDevice td = deviceToCapture as TouchDevice;
if (td.Captured != null)
{
this.ReleaseTouchCapture(td);
}
// By default, we support dragging via the left touch button.
// If another button is required for dragging, this method should be overridden.
if (td.Captured == null)
{
CapturedDevice = td;
td.Capture(this);
result = true;
}
}
}
return(result);
}
public void Capture_Is_Cleared_When_Control_Removed()
{
Canvas control;
var root = new TestRoot
{
Child = control = new Canvas(),
};
var target = new MouseDevice();
target.Capture(control);
Assert.Same(control, target.Captured);
root.Child = null;
Assert.Null(target.Captured);
}
void ReleaseMouse()
{
mouseDevice?.Capture(null);
_tabContext.Left = _tabContext.OX;
_tabContext.Top = _tabContext.OY;
}
void ReleaseMouse()
{
mouseDevice?.Capture(null);
_tabContext.X =
_tabContext.Y = _tabContext.Radius;
}
