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/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*
* This file is dual-licensed.
* In addition to the GPLv3 license mentioned above, this code is also
* licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
* full text of the license.
*
*/
#ifndef GOB_BACKBUFFER_H
#define GOB_BACKBUFFER_H
#include "common/system.h"
namespace Gob {
class Surface;
class BackBuffer {
public:
BackBuffer();
~BackBuffer();
protected:
void trashBuffer();
void resizeBuffer(uint16 width, uint16 height);
bool saveScreen (const Surface &dest, int16 &left, int16 &top, int16 &right, int16 &bottom);
bool restoreScreen( Surface &dest, int16 &left, int16 &top, int16 &right, int16 &bottom);
bool hasBuffer() const;
bool hasSavedBackground() const;
private:
Surface *_background; ///< The saved background.
bool _saved; ///< Was the background saved?
int16 _saveLeft; ///< The left position of the saved background.
int16 _saveTop; ///< The top of the saved background.
int16 _saveRight; ///< The right position of the saved background.
int16 _saveBottom; ///< The bottom position of the saved background.
};
} // End of namespace Gob
#endif // GOB_BACKBUFFER_H
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