/* -*- c++ -*-
 * Copyright ©2008 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

#ifndef RENDERCONTEXTSTACKED_H
#define RENDERCONTEXTSTACKED_H

#include "rendercontext.h"
#include <list>

class RenderContextStacked : public RenderContext
{
public:
	RenderContextStacked()
		: RenderContext(-1, NULL)
	{ }
	RenderContextStacked(RenderContext* c);
	virtual ~RenderContextStacked();

	virtual void render(Output* what) const;

	virtual int size(void) const { return xsize() * ysize() * stack.size(); }
	virtual void halve(RenderContext** r0, RenderContext** r1) const;
	void add(RenderContext* r) { stack.push_back(r); }

private:
	std::list<RenderContext*> stack;

	// We prohibit external use of the default shallow copy
	// constructor and assignment operator (they're not needed, and we
	// doesn't like the semantics, precious.
	RenderContextStacked(const RenderContextStacked&);
	RenderContext& operator=(const RenderContext&);
};

#endif