protected override void onDraw(Context gr)
{
base.onDraw(gr);
gr.Save();
if (ClipToClientRect)
{
//clip to client zone
CairoHelpers.CairoRectangle(gr, ClientRectangle, CornerRadius);
gr.Clip();
}
if (child != null)
{
child.Paint(ref gr);
}
gr.Restore();
}