public void Grab()
{
var layout = _guiElement.GetLayout();
// create the container where we will move the draggable inside and where we create highlight for drop targets
DragAndDropStage = new Canvas();
_guiElement.GetStage().AddChild(DragAndDropStage);
// replace the guiElement with a spacer while it is draggeed
Replacer = new Spacer(layout.GetCalculatedWidth(), layout.GetCalculatedHeight());
_guiElement.GetParent().ReplaceChild(_guiElement, Replacer);
OriginalPosition = new Vector2(layout.X, layout.Y);
var absoluteGeometry = _guiElement.GetLayoutProcessingData().AbsoluteGeometry;
layout.X = absoluteGeometry.X;
layout.Y = absoluteGeometry.Y;
// add the draggable on to the DragAndDropStage
DragAndDropStage.AddChild(_guiElement);
MousePosInComponent = new Point(
GuiStage.MousePosition.X - layout.X,
GuiStage.MousePosition.Y - layout.Y
);
}