// vi:ft=cpp
/*
 * (c) 2010 Alexander Warg <warg@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 *
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU General Public License 2.
 * Please see the COPYING-GPL-2 file for details.
 */
#pragma once

#include <l4/mag-gfx/geometry>
#include <l4/mag-gfx/gfx_colors>

namespace Mag_gfx {

class Canvas;
class Texture;

class Factory
{
public:
  class Set
  {
  private:
    Factory *_scrs[10];

  public:
    Factory *find(L4Re::Video::Pixel_info const &pi)
    {
      for (unsigned i = 0; i < sizeof(_scrs)/sizeof(_scrs[0]); ++i)
	if (_scrs[i] && *_scrs[i]->pixel_info() == pi)
	  return _scrs[i];

      return 0;
    }

    bool add(Factory *f)
    {
      for (unsigned i = 0; i < sizeof(_scrs)/sizeof(_scrs[0]); ++i)
	if (!_scrs[i])
	  {
	    _scrs[i] = f;
	    return true;
	  }

      return false;
    }
  };


  static Set set;

  virtual Pixel_info const *pixel_info() = 0;
  virtual Canvas *create_canvas(void *pixels, Area const &size, unsigned bpl) = 0;
  virtual Texture *create_texture(Area const &size, void *buffer = 0,
                                  bool alpha = false) = 0;
  virtual unsigned long get_texture_size(Area const &size,
                                         bool alpha = false) = 0;

  virtual ~Factory() {}
};


}