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screen.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-1-2-0/engines/draci/screen.h $
 * $Id: screen.h 46320 2009-12-09 21:03:22Z fingolfin $
 *
 */

#ifndef DRACI_SCREEN_H
#define DRACI_SCREEN_H

#include "common/scummsys.h"

namespace Draci {

enum ScreenParameters {
      kScreenWidth = 320,
      kScreenHeight = 200,
      kNumColours = 256,
      kDefaultTransparent = 255
};

class DraciEngine;
class Surface;

class Screen {

public:
      Screen(DraciEngine *vm);
      ~Screen();

      void setPalette(const byte *data, uint16 start, uint16 num);
      void interpolatePalettes(const byte *first, const byte *second, uint16 start, uint16 num, int index, int number);
      const byte *getPalette() const { return _palette; }
      void copyToScreen();
      void clearScreen();
      Surface *getSurface() { return _surface; }

private:
      int interpolate(int first, int second, int index, int number);

      Surface *_surface;
      byte *_palette;
      byte *_blackPalette;
      DraciEngine *_vm;
};

} // End of namespace Draci

#endif // DRACI_SCREEN_H

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