protected void ClearSelection()
{
if (TSFrame != null)
{
if (TSFrame.Parent is Canvas)
{
(TSFrame.Parent as Canvas).Children.Remove(TSFrame);
TSFrame = null;
}
DraggingPoint = null;
if (FrameChanged != null)
{
FrameChanged(null);
}
}
if (SelectionRect != null)
{
if (SelectionRect.Parent is Canvas)
{
(SelectionRect.Parent as Canvas).Children.Remove(SelectionRect);
SelectionRect = null;
}
}
}
internal override void ReportStartDrag(Canvas drawingCanvas, MouseButtonEventArgs args)
{
base.ReportStartDrag(drawingCanvas, args);
if ((drawingCanvas == null) || (args.ChangedButton != MouseButton.Left))
{
return;
}
Point mousePos = args.GetPosition(drawingCanvas);
DDObject affectedObject = GetTopmostAtPointOfType(drawingCanvas, typeof(DDObject), mousePos) as DDObject;
if (affectedObject == null)
{
SelectionRect = new DDSelectionRect(mousePos, mousePos);
drawingCanvas.Children.Add(SelectionRect);
}
else
{
if ((TSFrame == null) || (!TSFrame.Targets.Contains(affectedObject)))
{
SelectObjects(drawingCanvas, affectedObject);
}
if (TSFrame != null)
{
DraggingPoint = new Point(mousePos.X - TSFrame.X, mousePos.Y - TSFrame.Y);
}
}
}
internal override void ReportEndDrag(Canvas drawingCanvas, MouseButtonEventArgs args)
{
base.ReportEndDrag(drawingCanvas, args);
if ((drawingCanvas == null) || (args.ChangedButton != MouseButton.Left))
{
return;
}
DraggingPoint = null;
if (SelectionRect != null)
{
SelectObjects(drawingCanvas, GetAllInsideRectOfDDObject(drawingCanvas, SelectionRect.Bounds));
drawingCanvas.Children.Remove(SelectionRect);
SelectionRect = null;
}
}