/*
 * This file is part of Chalk
 *
 * Copyright (c) 2004 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_FILTER_H_
#define _KIS_CONVOLUTION_FILTER_H_

#include "kis_filter.h"
#include "kis_filter_configuration.h"
#include "kis_convolution_painter.h"

class KisConvolutionConfiguration : public KisFilterConfiguration {
public:
    KisConvolutionConfiguration(const TQString & name, KisKernel * matrix, 
				KisChannelInfo::enumChannelFlags channelFlags = KisChannelInfo::FLAG_COLOR_AND_ALPHA)
        : KisFilterConfiguration( name, 1 )
        , m_matrix(matrix)
	, m_channelFlags(channelFlags)
    {};

    void fromXML(const TQString & s);
    TQString toString();

public:

    inline KisKernelSP matrix() { return m_matrix; }
    inline KisChannelInfo::enumChannelFlags channels() { return m_channelFlags; }

private:

    KisKernelSP m_matrix;
    KisChannelInfo::enumChannelFlags m_channelFlags;

};


class KisConvolutionFilter : public KisFilter {

    Q_OBJECT
  

public:

    KisConvolutionFilter(const KisID& id, const TQString & category, const TQString & entry)
        : KisFilter( id, category, entry )
        {};

public:

    virtual void process(KisPaintDeviceSP,KisPaintDeviceSP, KisFilterConfiguration* , const TQRect&);
    virtual bool supportsIncrementalPainting() { return false; }
    virtual ColorSpaceIndependence colorSpaceIndependence() { return FULLY_INDEPENDENT; };
    virtual int overlapMarginNeeded(KisFilterConfiguration* c) const;
};


/**
 * This class is used for a convolution filter with a constant matrix
 */
class KisConvolutionConstFilter : public KisConvolutionFilter {

public:

    KisConvolutionConstFilter(const KisID& id, const TQString & category, const TQString & entry) 
	: KisConvolutionFilter(id, category, entry) 
    {
	m_channelFlags = KisChannelInfo::FLAG_COLOR_AND_ALPHA;
    };

    virtual ~KisConvolutionConstFilter() {};

public:

    virtual KisFilterConfiguration * configuration(TQWidget*);
    virtual KisFilterConfiguration * configuration() { return configuration(0); };

protected:

    KisKernelSP m_matrix;
    KisChannelInfo::enumChannelFlags m_channelFlags;
};

#endif
