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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-07-21
* Description : image histogram manipulation methods.
*
* Copyright (C) 2004-2007 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 IMAGEHISTOGRAM_H
#define IMAGEHISTOGRAM_H
// TQt includes.
#include <tqthread.h>
// Local includes.
#include "digikam_export.h"
class TQObject;
namespace Digikam
{
class ImageHistogramPriv;
class DImg;
class DIGIKAM_EXPORT ImageHistogram : public TQThread
{
public:
enum HistogramChannelType
{
ValueChannel = 0,
RedChannel,
GreenChannel,
BlueChannel,
AlphaChannel
};
class EventData
{
public:
EventData()
{
starting = false;
success = false;
histogram = 0;
}
bool starting;
bool success;
ImageHistogram *histogram;
};
public:
ImageHistogram(uchar *i_data, uint i_w, uint i_h, bool i_sixteenBits, TQObject *parent=0);
ImageHistogram(const DImg& image, TQObject *parent=0);
~ImageHistogram();
void setup(uchar *i_data, uint i_w, uint i_h, bool i_sixteenBits, TQObject *parent);
/** Method to stop threaded computations.*/
void stopCalcHistogramValues(void);
/** Methods for to manipulate the histogram data.*/
double getCount(int channel, int start, int end);
double getMean(int channel, int start, int end);
double getPixels();
double getStdDev(int channel, int start, int end);
double getValue(int channel, int bin);
double getMaximum(int channel);
int getHistogramSegment(void);
int getMedian(int channel, int start, int end);
private:
ImageHistogramPriv* d;
private:
void calcHistogramValues();
void postProgress(bool starting, bool success);
protected:
virtual void run();
};
} // NameSpace Digikam
#endif /* IMAGEHISTOGRAM_H */
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