static void DropTarget_PreviewDragEnter(object sender, DragEventArgs e)
{
if (!UpdateEffects(sender, e))
{
return;
}
// Setup the preview Adorner
var feedbackUI = GetDropTarget(sender as DependencyObject).GetVisualFeedback(e.Data);
_offsetPoint = GetOffsetPoint(e.Data);
var advisor = GetDropTarget(sender as DependencyObject);
var mousePoint = MouseUtilities.GetMousePosition(advisor.TargetUI);
//giving a tolerance of 2 so that the adorner is created when the mouse is moved fast.
//this might still be small...in that case increase the tolerance
if ((mousePoint.X < 2) || (mousePoint.Y < 2) ||
(mousePoint.X > ((FrameworkElement)(advisor.TargetUI)).ActualWidth - 2) ||
(mousePoint.Y > ((FrameworkElement)(advisor.TargetUI)).ActualHeight - 2) ||
(_overlayElt == null))
{
CreatePreviewAdorner(sender as UIElement, feedbackUI);
}
e.Handled = true;
}
static void DropTarget_PreviewDragLeave(object sender, DragEventArgs e)
{
if (UpdateEffects(sender, e) == false)
{
return;
}
var advisor = GetDropTarget(sender as DependencyObject);
var mousePoint = MouseUtilities.GetMousePosition(advisor.TargetUI);
//Console.WriteLine("Inside DropTarget_PreviewDragLeave1" + mousePoint.X.ToString() + "|" + mousePoint.Y.ToString());
//giving a tolerance of 2 so that the adorner is removed when the mouse is moved fast.
//this might still be small...in that case increase the tolerance
if ((mousePoint.X < 2) || (mousePoint.Y < 2) ||
(mousePoint.X > ((FrameworkElement)(advisor.TargetUI)).ActualWidth - 2) ||
(mousePoint.Y > ((FrameworkElement)(advisor.TargetUI)).ActualHeight - 2))
{
RemovePreviewAdorner();
}
e.Handled = true;
}