Crainiate Community

Is it possible to create a complex shape that can be collapsed/expanded like a Table?

Yes it is. You need to inherit from ComplexShape and implement the IExpandable interface.

The GraphicsPath (local to the shape) returned from the Expander method determines the location of the expander and this will automatically expand the shape if DrawExpand is set to true.

The following code will render an expander (_expandPath is the variable for the Expander property) :

private void RenderExpand(Graphics graphics, Render render)
{
	//Obtain a reference to IExpandable interface
	IExpandable expand = (IExpandable) this;
			
	if (!expand.DrawExpand) return;

	//Draw the expander
	Pen pen = new Pen(Color.FromArgb(128,Color.Gray),1);

	SolidBrush brush = new SolidBrush(Color.White);
			
	//Set up the expand path
	_expandPath = new GraphicsPath();

	_expandPath.AddEllipse(Width-20,5,14,14);

	SmoothingMode smoothing = graphics.SmoothingMode;
	graphics.SmoothingMode = SmoothingMode.HighQuality;
	graphics.FillPath(brush,_expandPath); //Fill Circle
	graphics.DrawPath(pen,_expandPath); //Outline
		
	pen.Color = Color.FromArgb(128,Color.Navy);
	pen.Width = 2;
	PointF[] points;

	if (expand.Expanded)
	{
		points = new PointF[] {new PointF(Width-16,11),new PointF(Width-13,8),new PointF(Width-10,11)};
	}
	else
	{
		points = new PointF[] {new PointF(Width-16,8),new PointF(Width-13,11),new PointF(Width-10,8)};
	}
	graphics.DrawLines(pen,points);
	points[0].Y += 5;
			points[1].Y += 5;
			points[2].Y += 5;
	graphics.DrawLines(pen,points);
	graphics.SmoothingMode = smoothing;
}