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Diffstat (limited to 'engines/gob/backbuffer.h')
-rw-r--r-- | engines/gob/backbuffer.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/engines/gob/backbuffer.h b/engines/gob/backbuffer.h new file mode 100644 index 0000000000..c978689e9f --- /dev/null +++ b/engines/gob/backbuffer.h @@ -0,0 +1,59 @@ +/* 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. + * + */ + +#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 |