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/* This file is part of the KDE project
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* Copyright (c) 2004 Casper Boemann <cbr@boemann.dkt>
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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_TILED_ITERATOR_H_
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#define KIS_TILED_ITERATOR_H_
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#include <tqglobal.h>
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#include <ksharedptr.h>
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#include <kis_tile.h>
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#include <kis_tileddatamanager.h>
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#include <koffice_export.h>
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/**
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* The KisIterator class iterates through the pixels of a KisPaintDevice hiding the tile structure
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*/
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class KRITACORE_EXPORT KisTiledIterator : public TDEShared {
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protected:
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KisTiledDataManager *m_ktm;
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TQ_INT32 m_pixelSize; // bytes per pixel
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TQ_INT32 m_x; // current x position
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TQ_INT32 m_y; // cirrent y position
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TQ_INT32 m_row; // row in tilemgr
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TQ_INT32 m_col; // col in tilemgr
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TQ_UINT8 *m_data;
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TQ_UINT8 *m_oldData;
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TQ_INT32 m_offset;
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KisTile *m_tile;
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KisTile* m_oldTile;
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bool m_writable;
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protected:
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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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void fetchTileData(TQ_INT32 col, TQ_INT32 row);
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public:
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KisTiledIterator( KisTiledDataManager *ktm);
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KisTiledIterator(const KisTiledIterator&);
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KisTiledIterator& operator=(const KisTiledIterator&);
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~KisTiledIterator();
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public:
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// current x position
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TQ_INT32 x() const { return m_x; };
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// cirrent y position
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TQ_INT32 y() const { return m_y; };
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/// Returns a pointer to the pixel data. Do NOT interpret the data - leave that to a colorstrategy
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TQ_UINT8 *rawData() const;
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/// Returns a pointer to the pixel data as it was at the moment tof he last memento creation.
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const TQ_UINT8 * oldRawData() const;
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};
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/**
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* The KisRectIterator class iterates through the pixels of a rect in a KisPaintDevice hiding the
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* tile structure
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*/
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class KRITACORE_EXPORT KisTiledRectIterator : public KisTiledIterator
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{
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public:
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/// do not call constructor directly use factory method in KisDataManager instead.
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KisTiledRectIterator( KisTiledDataManager *dm, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h, bool writable);
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KisTiledRectIterator(const KisTiledRectIterator&);
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KisTiledRectIterator& operator=(const KisTiledRectIterator&);
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~KisTiledRectIterator();
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public:
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TQ_INT32 nConseqPixels() const;
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/// Advances a number of pixels until it reaches the end of the rect
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KisTiledRectIterator & operator+=(int n);
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/// Advances one pixel. Going to the beginning of the next line when it reaches the end of a line
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KisTiledRectIterator & operator++();
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/// Goes back one pixel. Going to the end of the line above when it reaches the beginning of a line
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//KisTiledRectIterator & operator--();
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/// returns true when the iterator has reached the end
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inline bool isDone() const { return m_beyondEnd; }
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protected:
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TQ_INT32 m_left;
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TQ_INT32 m_top;
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TQ_INT32 m_w;
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TQ_INT32 m_h;
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TQ_INT32 m_topRow;
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TQ_INT32 m_bottomRow;
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TQ_INT32 m_leftCol;
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TQ_INT32 m_rightCol;
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TQ_INT32 m_xInTile;
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TQ_INT32 m_yInTile;
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TQ_INT32 m_leftInTile;
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TQ_INT32 m_rightInTile;
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TQ_INT32 m_topInTile;
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TQ_INT32 m_bottomInTile;
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bool m_beyondEnd;
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private:
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void nextTile();
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};
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/**
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* The KisHLineIterator class iterates through the pixels of a horizontal line in a KisPaintDevice hiding the
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* tile structure
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*/
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class KRITACORE_EXPORT KisTiledHLineIterator : public KisTiledIterator
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{
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public:
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/// do not call constructor directly use factory method in KisDataManager instead.
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KisTiledHLineIterator( KisTiledDataManager *dm, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, bool writable);
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KisTiledHLineIterator(const KisTiledHLineIterator&);
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KisTiledHLineIterator& operator=(const KisTiledHLineIterator&);
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~KisTiledHLineIterator();
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public:
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/// Advances one pixel. Going to the beginning of the next line when it reaches the end of a line
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KisTiledHLineIterator & operator++();
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/// Returns the number of consequtive horizontal pixels that we point at
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/// This is useful for optimizing
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TQ_INT32 nConseqHPixels() const;
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/// Advances a number of pixels until it reaches the end of the line
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KisTiledHLineIterator & operator+=(int);
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/// Goes back one pixel. Going to the end of the line above when it reaches the beginning of a line
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KisTiledHLineIterator & operator--();
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/// returns true when the iterator has reached the end
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bool isDone() const { return m_x > m_right; }
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/// increment to the next row and rewind to the begining
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void nextRow();
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protected:
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TQ_INT32 m_right;
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TQ_INT32 m_left;
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TQ_INT32 m_leftCol;
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TQ_INT32 m_rightCol;
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TQ_INT32 m_xInTile;
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TQ_INT32 m_yInTile;
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TQ_INT32 m_leftInTile;
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TQ_INT32 m_rightInTile;
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private:
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void nextTile();
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void prevTile();
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};
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/**
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* The KisVLineIterator class iterates through the pixels of a vertical line in a KisPaintDevice hiding the
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* tile structure
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*/
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class KRITACORE_EXPORT KisTiledVLineIterator : public KisTiledIterator
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{
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public:
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/// do not call constructor directly use factory method in KisDataManager instead.
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KisTiledVLineIterator( KisTiledDataManager *dm, TQ_INT32 x, TQ_INT32 y, TQ_INT32 h, bool writable);
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KisTiledVLineIterator(const KisTiledVLineIterator&);
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KisTiledVLineIterator& operator=(const KisTiledVLineIterator&);
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~KisTiledVLineIterator();
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public:
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/// Advances one pixel. Going to the beginning of the next line when it reaches the end of a line
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KisTiledVLineIterator & operator++();
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/// Goes back one pixel. Going to the end of the line above when it reaches the beginning of a line
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//KisTiledVLineIterator & operator--();
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/// returns true when the iterator has reached the end
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bool isDone() const { return m_y > m_bottom; }
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/// increment to the next column and rewind to the begining
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void nextCol();
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protected:
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TQ_INT32 m_top;
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TQ_INT32 m_bottom;
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TQ_INT32 m_topRow;
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TQ_INT32 m_bottomRow;
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TQ_INT32 m_xInTile;
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TQ_INT32 m_yInTile;
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TQ_INT32 m_topInTile;
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TQ_INT32 m_bottomInTile;
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private:
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void nextTile();
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};
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#endif // KIS_TILED_ITERATOR_H_
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