private HitTestFilterBehavior HitTestFilter(DependencyObject dependencyObject)
{
if (dependencyObject is VisualizationPanelViewBase)
{
this.hitTestResult = dependencyObject as VisualizationPanelViewBase;
return(HitTestFilterBehavior.Stop);
}
return(HitTestFilterBehavior.Continue);
}
private VisualizationPanel GetVisualizationPanelUnderMouse(Point mousePosition)
{
// Find out if the mouse is above an existing Visualization Panel
this.hitTestResult = null;
VisualTreeHelper.HitTest(
this.Items,
new HitTestFilterCallback(this.HitTestFilter),
new HitTestResultCallback(this.HitTestResultCallback),
new PointHitTestParameters(mousePosition));
// Get the visualization panel that the stream was dropped over (if any)
return(this.hitTestResult != null ? this.hitTestResult.DataContext as VisualizationPanel : null);
}
