ViewProfileScale.h

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef VIEW_PROFILE_SCALE_H
#define VIEW_PROFILE_SCALE_H
 
#include "ColorFilterMode.h"
#include <QColor>
#include <QLabel>
#include <QRgb>

class ViewProfileScale : public QLabel
{
public:
  explicit ViewProfileScale(int minimumWidth,
                            QWidget *parent = 0);

  virtual void paintEvent (QPaintEvent *);

  void setBackgroundColor (QRgb rgbBackground);

  void setColorFilterMode (ColorFilterMode colorFilterMode);
 
private:
 
  void paintForeground ();
  void paintHue ();
  void paintIntensity ();
  void paintOneSpectrum (const QColor &colorStart,
                         const QColor &colorStop); // Generic processing for painting with only one spectrum
  void paintSaturation ();
  void paintValue ();
 
  QRgb m_rgbBackground;
  ColorFilterMode m_colorFilterMode;
};
 
#endif // VIEW_PROFILE_SCALE_H