kis_convolution_painter.h

/*
 *  Copyright (c) 2005 Cyrille Berger <cberger@cberger.net>
 *
 *  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_CONVOLUTION_PAINTER_H_
#define KIS_CONVOLUTION_PAINTER_H_
 
#include <tqimage.h>
 
#include "ksharedptr.h"
#include "kis_types.h"
#include "kis_painter.h"
 
#include "koffice_export.h"
 
enum KisConvolutionBorderOp {
    BORDER_DEFAULT_FILL = 0, // Use the default pixel to make up for the missing pixels on the border or the pixel that lies beyond
                             // the rect we are convolving.
    BORDER_WRAP = 1, // Use the pixel on the opposite side to make up for the missing pixels on the border. XXX: Not implemented yet
    BORDER_REPEAT = 2, // Use the border for the missing pixels, too.
    BORDER_AVOID = 3 // Skip convolving the border pixels at all.
};
 
class KisKernel;
typedef TDESharedPtr<KisKernel> KisKernelSP;
 
class KisKernel : public TDEShared 
{
 
public:
    
    TQ_UINT32 width;
    TQ_UINT32 height;
    TQ_INT32 offset;
    TQ_INT32 factor;
    TQ_INT32 * data;
 
    KisKernel() : width(0), height(0), offset(0), factor(0), data(0) {};
 
    virtual ~KisKernel() { delete [] data; };
 
    static KisKernelSP fromTQImage(const TQImage& img);
 
};
 
 
class KRITACORE_EXPORT KisConvolutionPainter : public KisPainter
{
 
    typedef KisPainter super;
 
public:
 
    KisConvolutionPainter();
    KisConvolutionPainter(KisPaintDeviceSP device);
 
    void applyMatrix(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
                     KisConvolutionBorderOp borderOp = BORDER_AVOID,
                     KisChannelInfo::enumChannelFlags channelFlags = KisChannelInfo::FLAG_COLOR);
private:
    void applyMatrixRepeat(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
                           KisChannelInfo::enumChannelFlags channelFlags);
 
 
};
#endif //KIS_CONVOLUTION_PAINTER_H_