internal DocumentPaneControlOverlayArea( IOverlayWindow overlayWindow, LayoutDocumentPaneControl documentPaneControl) : base(overlayWindow) { _documentPaneControl = documentPaneControl; base.SetScreenDetectionArea(new Rect( _documentPaneControl.PointToScreenDPI(new Point()), _documentPaneControl.TransformActualSizeToAncestor())); }