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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-12-01
* Description : image curves manipulation methods.
*
* Copyright (c) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* 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, 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.
*
* ============================================================ */
#ifndef IMAGECURVES_H
#define IMAGECURVES_H
#define ROUND(x) ((int) ((x) + 0.5))
// Qt includes.
#include <qpoint.h>
#include <qpointarray.h>
// KDE includes.
#include <kurl.h>
// Digikam includes.
#include "digikam_export.h"
namespace Digikam
{
class ImageCurvesPriv;
class DIGIKAM_EXPORT ImageCurves
{
public:
enum CurveType
{
CURVE_SMOOTH = 0, // Smooth curve type
CURVE_FREE // Freehand curve type.
};
typedef double CRMatrix[4][4];
public:
ImageCurves(bool sixteenBit);
~ImageCurves();
// Methods for to manipulate the curves data.
bool isDirty();
bool isSixteenBits();
void curvesReset();
void curvesChannelReset(int channel);
void curvesCalculateCurve(int channel);
float curvesLutFunc(int n_channels, int channel, float value);
void curvesLutSetup(int nchannels);
void curvesLutProcess(uchar *srcPR, uchar *destPR, int w, int h);
// Methods for to set manually the curves values.
void setCurveValue(int channel, int bin, int val);
void setCurvePointX(int channel, int point, int x);
void setCurvePointY(int channel, int point, int y);
void setCurveType(int channel, CurveType type);
void setCurvePoint(int channel, int point, const QPoint& val);
void setCurvePoints(int channel, const QPointArray& vals);
int getCurveValue(int channel, int bin);
int getCurvePointX(int channel, int point);
int getCurvePointY(int channel, int point);
int getCurveType(int channel);
QPoint getCurvePoint(int channel, int point);
QPointArray getCurvePoints(int channel);
// Methods for to save/load the curves values to/from a Gimp curves text file.
bool saveCurvesToGimpCurvesFile(const KURL& fileUrl);
bool loadCurvesFromGimpCurvesFile(const KURL& fileUrl);
private:
void curvesPlotCurve(int channel, int p1, int p2, int p3, int p4);
void curvesCRCompose(CRMatrix a, CRMatrix b, CRMatrix ab);
private:
ImageCurvesPriv* d;
};
} // NameSpace Digikam
#endif /* IMAGECURVES_H */
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