public override void OnDraw(Graphics g)
{
base.OnDraw(g); //draw rectangle
DrawImage.DrawImageOnRect(g, getBackImage());
if (_items != null)
{
DrawingPage.VerifyDrawingOrder(_items, false);
GraphicsState gs = g.Save();
if (RotateAngle != 0)
{
double angle = (RotateAngle / 180) * Math.PI;
Rectangle rc = this.Rectangle;
g.TranslateTransform(
(rc.Width + (float)(rc.Height * Math.Sin(angle)) - (float)(rc.Width * Math.Cos(angle))) / 2 + rc.X,
(rc.Height - (float)(rc.Height * Math.Cos(angle)) - (float)(rc.Width * Math.Sin(angle))) / 2 + rc.Y);
g.RotateTransform((float)RotateAngle);
}
else
{
g.TranslateTransform((float)(this.Left), (float)(this.Top));
}
for (int i = 0; i < _items.Count; i++)
{
DrawingItem item = _items[i];
if (item.Visible)
{
item.OnDraw(g);
}
}
g.Restore(gs);
}
}
