private void OnBringTo(Func <IEnumerable <DrawingTool>, int> getPositionfunc)
{
var overlappedTools = GetOverlappedTools(SelectedTool);
if (overlappedTools.Count() > 0)
{
DrawingTools.Remove(SelectedTool);
DrawingTools.Insert(getPositionfunc(overlappedTools), SelectedTool);
Invalidate();
IsDirty = true;
}
}