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/*
* Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org>
*
* 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 KIS_TILEDDATAMANAGER_H_
#define KIS_TILEDDATAMANAGER_H_
#include <qglobal.h>
#include <qvaluevector.h>
#include <ksharedptr.h>
#include "kis_tile_global.h"
#include "kis_tile.h"
#include "kis_memento.h"
class KisTiledDataManager;
typedef KSharedPtr<KisTiledDataManager> KisTiledDataManagerSP;
class KisDataManager;
typedef KSharedPtr<KisDataManager> KisDataManagerSP;
class KisTiledIterator;
class KisTiledRandomAccessor;
class KoStore;
class KisTileDataWrapper : public KShared {
KisTile* m_tile;
Q_INT32 m_offset;
public:
KisTileDataWrapper(KisTile* tile, Q_INT32 offset);
virtual ~KisTileDataWrapper();
Q_UINT8* data() const { return m_tile->data() + m_offset; }
};
typedef KSharedPtr<KisTileDataWrapper> KisTileDataWrapperSP;
/**
* KisTiledDataManager implements the interface that KisDataManager defines
*
* The interface definition is enforced by KisDataManager calling all the methods
* which must also be defined in KisTiledDataManager. It is not allowed to change the interface
* as other datamangers may also rely on the same interface.
*
* * Storing undo/redo data
* * Offering ordered and unordered iterators over rects of pixels
* * (eventually) efficiently loading and saving data in a format
* that may allow deferred loading.
*
* A datamanager knows nothing about the type of pixel data except
* how many Q_UINT8's a single pixel takes.
*/
class KisTiledDataManager : public KShared {
protected:
KisTiledDataManager(Q_UINT32 pixelSize, const Q_UINT8 *defPixel);
~KisTiledDataManager();
KisTiledDataManager(const KisTiledDataManager &dm);
KisTiledDataManager & operator=(const KisTiledDataManager &dm);
protected:
// Allow the baseclass of iterators acces to the interior
// derived iterator classes must go through KisTiledIterator
friend class KisTiledIterator;
friend class KisTiledRandomAccessor;
protected:
void setDefaultPixel(const Q_UINT8 *defPixel);
const Q_UINT8 * defaultPixel() const { return m_defPixel;};
KisMementoSP getMemento();
void rollback(KisMementoSP memento);
void rollforward(KisMementoSP memento);
// For debugging use.
bool hasCurrentMemento() const { return m_currentMemento != 0; }
protected:
/**
* Reads and writes the tiles from/onto a KoStore (which is simply a file within a zip file)
*
*/
bool write(KoStore *store);
bool read(KoStore *store);
protected:
Q_UINT32 pixelSize();
void extent(Q_INT32 &x, Q_INT32 &y, Q_INT32 &w, Q_INT32 &h) const;
QRect extent() const;
void setExtent(Q_INT32 x, Q_INT32 y, Q_INT32 w, Q_INT32 h);
protected:
void clear(Q_INT32 x, Q_INT32 y, Q_INT32 w, Q_INT32 h, Q_UINT8 clearValue);
void clear(Q_INT32 x, Q_INT32 y, Q_INT32 w, Q_INT32 h, const Q_UINT8 *clearPixel);
void clear();
protected:
void paste(KisDataManagerSP data, Q_INT32 sx, Q_INT32 sy, Q_INT32 dx, Q_INT32 dy,
Q_INT32 w, Q_INT32 h);
protected:
/**
* Get a read-only pointer to pixel (x, y).
*/
const Q_UINT8* pixel(Q_INT32 x, Q_INT32 y);
/**
* Get a read-write pointer to pixel (x, y).
*/
Q_UINT8* writablePixel(Q_INT32 x, Q_INT32 y);
/**
* write the specified data to x, y. There is no checking on pixelSize!
*/
void setPixel(Q_INT32 x, Q_INT32 y, const Q_UINT8 * data);
/**
* Copy the bytes in the specified rect to a vector. The caller is responsible
* for managing the vector.
*/
void readBytes(Q_UINT8 * bytes,
Q_INT32 x, Q_INT32 y,
Q_INT32 w, Q_INT32 h);
/**
* Copy the bytes in the vector to the specified rect. If there are bytes left
* in the vector after filling the rect, they will be ignored. If there are
* not enough bytes, the rest of the rect will be filled with the default value
* given (by default, 0);
*/
void writeBytes(const Q_UINT8 * bytes,
Q_INT32 x, Q_INT32 y,
Q_INT32 w, Q_INT32 h);
/// Get the number of contiguous columns starting at x, valid for all values
/// of y between minY and maxY.
Q_INT32 numContiguousColumns(Q_INT32 x, Q_INT32 minY, Q_INT32 maxY);
/// Get the number of contiguous rows starting at y, valid for all values
/// of x between minX and maxX.
Q_INT32 numContiguousRows(Q_INT32 y, Q_INT32 minX, Q_INT32 maxX);
/// Get the row stride at pixel (x, y). This is the number of bytes to add to a
/// pointer to pixel (x, y) to access (x, y + 1).
Q_INT32 rowStride(Q_INT32 x, Q_INT32 y);
// For debugging use
Q_INT32 numTiles() const;
private:
Q_UINT32 m_pixelSize;
Q_UINT32 m_numTiles;
KisTile *m_defaultTile;
KisTile **m_hashTable;
KisMementoSP m_currentMemento;
Q_INT32 m_extentMinX;
Q_INT32 m_extentMinY;
Q_INT32 m_extentMaxX;
Q_INT32 m_extentMaxY;
Q_UINT8 *m_defPixel;
private:
void ensureTileMementoed(Q_INT32 col, Q_INT32 row, Q_UINT32 tileHash, const KisTile *refTile);
KisTile *getOldTile(Q_INT32 col, Q_INT32 row, KisTile *def);
KisTile *getTile(Q_INT32 col, Q_INT32 row, bool writeAccess);
Q_UINT32 calcTileHash(Q_INT32 col, Q_INT32 row);
void updateExtent(Q_INT32 col, Q_INT32 row);
void recalculateExtent();
void deleteTiles(const KisMemento::DeletedTile *deletedTileList);
Q_INT32 xToCol(Q_INT32 x) const;
Q_INT32 yToRow(Q_INT32 y) const;
void getContiguousColumnsAndRows(Q_INT32 x, Q_INT32 y, Q_INT32 *columns, Q_INT32 *rows);
Q_UINT8* pixelPtr(Q_INT32 x, Q_INT32 y, bool writable);
KisTileDataWrapperSP pixelPtrSafe(Q_INT32 x, Q_INT32 y, bool writable);
};
inline Q_UINT32 KisTiledDataManager::pixelSize()
{
return m_pixelSize;
}
inline Q_INT32 KisTiledDataManager::xToCol(Q_INT32 x) const
{
if (x >= 0) {
return x / KisTile::WIDTH;
} else {
return -(((-x - 1) / KisTile::WIDTH) + 1);
}
}
inline Q_INT32 KisTiledDataManager::yToRow(Q_INT32 y) const
{
if (y >= 0) {
return y / KisTile::HEIGHT;
} else {
return -(((-y - 1) / KisTile::HEIGHT) + 1);
}
}
// during development the following line helps to check the interface is correct
// it should be safe to keep it here even during normal compilation
#include "kis_datamanager.h"
#endif // KIS_TILEDDATAMANAGER_H_
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