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67 lines
2.1 KiB
67 lines
2.1 KiB
/*
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* copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
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*
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* this program is free software; you can redistribute it and/or modify
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* it under the terms of the gnu general public license as published by
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* the free software foundation; either version 2 of the license, or
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* (at your option) any later version.
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*
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* this program is distributed in the hope that it will be useful,
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* but without any warranty; without even the implied warranty of
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* merchantability or fitness for a particular purpose. see the
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* gnu general public license for more details.
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*
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* you should have received a copy of the gnu general public license
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* along with this program; if not, write to the free software
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* foundation, inc., 675 mass ave, cambridge, ma 02139, usa.
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*/
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#ifndef KIS_TILED_RANDOM_ACCESSOR_H
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#define KIS_TILED_RANDOM_ACCESSOR_H
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#include <tqrect.h>
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#include <tqvaluelist.h>
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#include <ksharedptr.h>
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#include <kis_tileddatamanager.h>
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class KisTile;
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class KisTiledRandomAccessor : public TDEShared {
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struct KisTileInfo {
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KisTile* tile;
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KisTile* oldtile;
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TQ_UINT8* data;
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const TQ_UINT8* oldData;
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TQ_INT32 area_x1, area_y1, area_x2, area_y2;
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};
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public:
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KisTiledRandomAccessor(KisTiledDataManager *ktm, TQ_INT32 x, TQ_INT32 y, bool writable);
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~KisTiledRandomAccessor();
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private:
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inline TQ_UINT32 xToCol(TQ_UINT32 x) const { if (m_ktm) return m_ktm->xToCol(x); else return 0; };
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inline TQ_UINT32 yToRow(TQ_UINT32 y) const { if (m_ktm) return m_ktm->yToRow(y); else return 0; };
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KisTileInfo* fetchTileData(TQ_INT32 col, TQ_INT32 row);
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public:
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/// Move to a given x,y position, fetch tiles and data
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void moveTo(TQ_INT32 x, TQ_INT32 y);
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TQ_UINT8* rawData() const;
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const TQ_UINT8* oldRawData() const;
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private:
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KisTiledDataManager *m_ktm;
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KisTileInfo** m_tilesCache;
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TQ_UINT32 m_tilesCacheSize;
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TQ_INT32 m_pixelSize;
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TQ_UINT8* m_data;
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const TQ_UINT8* m_oldData;
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bool m_writable;
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static const TQ_UINT32 CACHESIZE; // Define the number of tiles we keep in cache
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};
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#endif
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