#ifndef _CamHistogram_hpp_
#define _CamHistogram_hpp_

#include <qpainter.h>
#include <qimage.h>
#include <qhgroupbox.h>

#include <stdio.h>
#include <stdlib.h>
#include <linux/types.h>
#include <linux/videodev.h>

#include "QCam.hpp"

class QPushButton;
class QWidget;
class QVGroupBox;
class QProgressBar;
class QLCDNumber;
class QHBox;
class QLabel;

#define focusHistorySize_ 200

class CamHistogram : public QHGroupBox {
   Q_OBJECT
public:
   CamHistogram(QCam *);
protected:
   void paintEvent(QPaintEvent * ev);
private:
   QVGroupBox * histoGroup_;
   QWidget * histogramArea_;
   QVGroupBox * focusGroup_;
   
   QPushButton * resetFocus_;
   QWidget * focusLevel_;
   QWidget * focusArea_;

   QHBox * seeingGroup_;
   QLabel * seeingLabel_;
   QProgressBar * seeingLevel_;
   //QLCDNumber * seeingValue_;
   void init();
   QPainter painter;
   QColor color_;
   QPen redPen_;
   QPen blackPen_;
   QCam * cam_;
   int histogram_[256];
   double focusValue_[focusHistorySize_];
   int focusIndexValue_;
   double focusMax_;
   void updateFocus(double newFocus);
   double getFocus(int when) const;
   double getFocus(int whenMin,int whenMax) const;
   double getMaxFocus() const { return focusMax_;};
   double getDistFromNeibourg(int x,int y) const;
public slots : 
   void updateDisplay();
   void resetFocus() {focusMax_=getFocus(0);};
};

#endif