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-/* ScummVM - Scumm Interpreter
- * Copyright (C) 2002-2003 The ScummVM project
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * $Header$
- *
- */
-
-#ifndef BLITTER_H
-#define BLITTER_H
-
-#include "config.h"
-
-#ifdef DEBUG
-# ifndef NO_DEBUG_CLIPPER
-# define DEBUG_CLIPPER
-# endif
-#else
-# ifdef DEBUG_CLIPPER
-# error DEBUG_CLIPPER defined without DEBUG
-# endif
-#endif
-
-#include "common/rect.h"
-
-using ScummVM::Point;
-using ScummVM::Rect;
-
-class Chunk;
-/*! @brief class for handling blitting on a frame buffer
-
- This class allows to perform secure blitting to a frame buffer in several ways.
- This means that clipping is performed, so that only the part that you want to modify can be modified.
-*/
-class Blitter {
-private:
- byte *_ptr; //!< This is the pointer to the start of the frame buffer
- byte *_offset; //!< This is the current pointer in the frame buffer
- Point _clip; //!< This is the size of the frame buffer (width/height)
- Rect _src; //!< This is the size and position of the destination rectangle
- Point _cur; //!< This is the current position in the destination rectangle
- bool _outside; //!< flag that is set to \c true when the blitter reach the end of the destination rectangle
-#ifdef DEBUG_CLIPPER
- int32 _clipped;
- int32 _clippedBlock;
-#endif
-public:
- /*! @brief constructor
-
- @param buffer the frame buffer to blit to
- @param dstsize the size of the frame buffer
- @param src the rectangle to blit to
- */
- Blitter(byte * buffer, const Point & dstsize, const Rect & src);
- virtual ~Blitter();
- void blit(byte *, uint32); //!< This method allows to blit directly some data from a buffer
- void blit(Chunk &, uint32); //!< This method allows to blit directly some data from a Chunk
- void put(byte); //!< This method allows to blit one byte
- void put(byte, uint32); //!< This method allows to blit one byte several times
- void advance(int32 = 1, int32 = 0); //!< This method allows to advance the current position in the blitter
- void advanceBlock(int32 = 1, int32 = 0); //!< This method allows to advance the current position in the blitter in terms of blocks
- void putBlock(uint32); //!< This method allows to blit one block from an int32 value repeated 4 time
- void putBlock(Chunk &); //!< This method allows to blit one block directly read from a Chunk
- void putBlock(byte *); //!< This method allows to blit one block directly from a buffer
- void putBlock(uint32, uint32, uint32, uint32); //!< This method allows to blit one block from a 4 int32 value
- void blockCopy(int32); //!< This method allows to copy one block from another separated by the given offset
- byte *getPtr() { return _ptr; }
-};
-
-#endif