public override void DrawRect(NSRect aRect)
{
float left = Bounds.MinX + iPadding;
float right = Bounds.MaxX - iPadding;
float top = Bounds.MaxY - iPadding - iAnchorHeight;
float bottom = Bounds.MinY + iPadding + iAnchorHeight;
NSBezierPath path = new NSBezierPath();
// start the path in the bottom left corner, just past the arc of the corner and go clockwise
path.MoveToPoint(new NSPoint(left, bottom + iCornerRadius));
path.LineToPoint(new NSPoint(left, top - iCornerRadius));
path.AppendBezierPathWithArcFromPointToPointRadius(new NSPoint(left, top),
new NSPoint(left + iCornerRadius, top),
iCornerRadius);
if (iAnchorOnTop)
{
path.LineToPoint(new NSPoint(iAnchorApex - iAnchorWidth * 0.5f, top));
path.LineToPoint(new NSPoint(iAnchorApex, top + iAnchorHeight));
path.LineToPoint(new NSPoint(iAnchorApex + iAnchorWidth * 0.5f, top));
}
path.LineToPoint(new NSPoint(right - iCornerRadius, top));
path.AppendBezierPathWithArcFromPointToPointRadius(new NSPoint(right, top),
new NSPoint(right, top - iCornerRadius),
iCornerRadius);
path.LineToPoint(new NSPoint(right, bottom + iCornerRadius));
path.AppendBezierPathWithArcFromPointToPointRadius(new NSPoint(right, bottom),
new NSPoint(right - iCornerRadius, bottom),
iCornerRadius);
if (!iAnchorOnTop)
{
path.LineToPoint(new NSPoint(iAnchorApex + iAnchorWidth * 0.5f, bottom));
path.LineToPoint(new NSPoint(iAnchorApex, bottom - iAnchorHeight));
path.LineToPoint(new NSPoint(iAnchorApex - iAnchorWidth * 0.5f, bottom));
}
path.LineToPoint(new NSPoint(left + iCornerRadius, bottom));
path.AppendBezierPathWithArcFromPointToPointRadius(new NSPoint(left, bottom),
new NSPoint(left, bottom + iCornerRadius),
iCornerRadius);
path.ClosePath();
NSColor.WhiteColor.SetStroke();
path.LineWidth = 4.0f;
path.Stroke();
NSColor.ColorWithCalibratedWhiteAlpha(0.0f, 0.9f).SetFill();
path.Fill();
path.Release();
}
