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88 lines
2.6 KiB
88 lines
2.6 KiB
/*
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* Copyright (c) 2004 Casper Boemann <cbr@boemann.dk>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_TILE_H_
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#define KIS_TILE_H_
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#include <tqglobal.h>
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#include <tqrect.h>
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class KisTiledDataManager;
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class KisTiledIterator;
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/**
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* Provides abstraction to a tile. A tile contains
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* a part of a PaintDevice, but only the individual pixels
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* are accesable and that only via iterators.
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*/
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class KisTile {
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public:
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KisTile(TQ_INT32 pixelSize, TQ_INT32 col, TQ_INT32 row, const TQ_UINT8 *defPixel);
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KisTile(const KisTile& rhs, TQ_INT32 col, TQ_INT32 row);
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KisTile(const KisTile& rhs);
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~KisTile();
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public:
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void release();
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void allocate();
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TQ_UINT8 *data(TQ_INT32 xoff, TQ_INT32 yoff) const;
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TQ_UINT8 *data() const { return m_data; }
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void setData(const TQ_UINT8 *pixel);
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TQ_INT32 refCount() const;
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void ref();
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TQ_INT32 getRow() const { return m_row; }
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TQ_INT32 getCol() const { return m_col; }
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TQRect extent() const { return TQRect(m_col * WIDTH, m_row * HEIGHT, WIDTH, HEIGHT); }
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void setNext(KisTile *);
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KisTile *getNext() const { return m_nextTile; }
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// These are const because they don't change the external data the tile represents,
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// although they do change internal representations. We need to be able to request
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// access to a tile in a const enviroment (like copyconstructor and so)!
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void addReader() const;
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void removeReader() const;
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TQ_INT32 readers() { return m_nReadlock; }
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friend class KisTiledIterator;
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friend class KisTiledDataManager;
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friend class KisMemento;
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friend class KisTileManager;
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private:
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KisTile& operator=(const KisTile&);
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private:
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TQ_UINT8 *m_data;
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mutable TQ_INT32 m_nReadlock;
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TQ_INT32 m_row;
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TQ_INT32 m_col;
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TQ_INT32 m_pixelSize;
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KisTile *m_nextTile;
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public:
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static const TQ_INT32 WIDTH;
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static const TQ_INT32 HEIGHT;
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};
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#endif // KIS_TILE_H_
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