protected override void OnNextGesture(Gesture gesture)
{
if (!this.IsEnabled)
{
return;
}
switch (gesture.Type)
{
case GestureType.LeftButtonDown:
this.isLeftButtonDown = true;
if (this.CaptureMouse())
{
this.IsPressed = true;
}
break;
case GestureType.LeftButtonUp:
this.isLeftButtonDown = false;
if (this.IsPressed)
{
this.OnClick();
}
this.ReleaseMouseCapture();
this.IsPressed = false;
break;
case GestureType.Move:
if (this.isLeftButtonDown && this.IsMouseCaptured)
{
this.IsPressed = this.HitTest(gesture.Point);
}
break;
}
}
protected override void OnNextGesture(Gesture gesture)
{
switch (gesture.Type)
{
case GestureType.LeftButtonDown:
this.CaptureMouse();
break;
case GestureType.FreeDrag:
if (this.scrollInfo != null && this.IsMouseCaptured)
{
this.scrollInfo.SetHorizontalOffset(this.scrollInfo.Offset.X - gesture.Delta.X);
this.scrollInfo.SetVerticalOffset(this.scrollInfo.Offset.Y - gesture.Delta.Y);
}
break;
case GestureType.LeftButtonUp:
if (this.IsMouseCaptured)
{
this.ReleaseMouseCapture();
}
break;
}
}
protected virtual void OnNextGesture(Gesture gesture)
{
}
private static bool OnNextGestureFindElement(IElement element, Gesture gesture)
{
if (element is IInputElement && element.HitTest(gesture.Point))
{
element.Gestures.OnNext(gesture);
return true;
}
return false;
}
private static bool OnNextGestureFindChild(IElement element, Gesture gesture)
{
return
element.GetVisualChildren().Reverse().Where(child => !OnNextGestureFindChild(child, gesture)).Any(
child => OnNextGestureFindElement(child, gesture));
}
protected override void OnNextGesture(Gesture gesture)
{
if (this.elementWithMouseCapture != null)
{
this.elementWithMouseCapture.Gestures.OnNext(gesture);
}
else
{
if (!OnNextGestureFindChild(this, gesture))
{
OnNextGestureFindElement(this, gesture);
}
}
}