/*
 *  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_STRATEGY_COLORSPACE_GRAYSCALE_H_
#define KIS_STRATEGY_COLORSPACE_GRAYSCALE_H_
#include <tqcolor.h>

#include <tdelocale.h>

#include <koffice_export.h>

#include "kis_global.h"
#include "kis_abstract_colorspace.h"
#include "kis_u8_base_colorspace.h"

class KRITACORE_EXPORT KisGrayColorSpace : public KisU8BaseColorSpace {
public:
    KisGrayColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p);
    virtual ~KisGrayColorSpace();

    virtual bool willDegrade(ColorSpaceIndependence /*independence*/)
        {
            return false;
        };

public:

    void setPixel(TQ_UINT8 *pixel, TQ_UINT8 gray, TQ_UINT8 alpha) const;
    void getPixel(const TQ_UINT8 *pixel, TQ_UINT8 *gray, TQ_UINT8 *alpha) const;

    virtual void getAlpha(const TQ_UINT8 *pixel, TQ_UINT8 *alpha) const;
    virtual void setAlpha(TQ_UINT8 * pixels, TQ_UINT8 alpha, TQ_INT32 nPixels) const;

    virtual void mixColors(const TQ_UINT8 **colors, const TQ_UINT8 *weights, TQ_UINT32 nColors, TQ_UINT8 *dst) const;
    virtual void convolveColors(TQ_UINT8** colors, TQ_INT32* kernelValues, KisChannelInfo::enumChannelFlags channelFlags, TQ_UINT8 *dst, TQ_INT32 factor, TQ_INT32 offset, TQ_INT32 nColors) const;
    virtual void invertColor(TQ_UINT8 * src, TQ_INT32 nPixels);
    virtual void darken(const TQ_UINT8 * src, TQ_UINT8 * dst, TQ_INT32 shade, bool compensate, double compensation, TQ_INT32 nPixels) const;
    virtual TQ_UINT8 intensity8(const TQ_UINT8 * src) const;

    virtual TQValueVector<KisChannelInfo *> channels() const;
    virtual TQ_UINT32 nChannels() const;
    virtual TQ_UINT32 nColorChannels() const;
    virtual TQ_UINT32 pixelSize() const;

    virtual void bitBlt(TQ_UINT8 *dst,
                TQ_INT32 dststride,
                const TQ_UINT8 *src,
                TQ_INT32 srcRowStride,
                const TQ_UINT8 *srcAlphaMask,
                TQ_INT32 maskRowStride,
                TQ_UINT8 opacity,
                TQ_INT32 rows,
                TQ_INT32 cols,
                const KisCompositeOp& op);

    KisCompositeOpList userVisiblecompositeOps() const;

protected:
    void compositeOver(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeMultiply(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeDivide(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeScreen(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeOverlay(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeDodge(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeBurn(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeDarken(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeLighten(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeErase(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
    void compositeAlphaDarken(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *mask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);


private:
    friend class KisGrayColorSpaceTester;

    static const TQ_UINT8 PIXEL_GRAY = 0;
    static const TQ_UINT8 PIXEL_GRAY_ALPHA = 1;
};

class KisGrayColorSpaceFactory : public KisColorSpaceFactory
{
public:
    /**
     * Chalk definition for use in .kra files and internally: unchanging name +
     * i18n'able description.
     */
    virtual KisID id() const { return KisID("GRAYA", i18n("Grayscale (8-bit integer/channel)")); };

    /**
     * lcms colorspace type definition.
     */
    virtual TQ_UINT32 colorSpaceType() { return TYPE_GRAYA_8; };

    virtual icColorSpaceSignature colorSpaceSignature() { return icSigGrayData; };

    virtual KisColorSpace *createColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p) { return new KisGrayColorSpace(parent, p); };

    virtual TQString defaultProfile() { return "gray built-in - (lcms internal)"; };
};

#endif // KIS_STRATEGY_COLORSPACE_GRAYSCALE_H_