ViewSegmentFilter.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_SEGMENT_FILTER_H
#define VIEW_SEGMENT_FILTER_H
 
#include "ColorFilterSettings.h"
#include <QColor>
#include <QLabel>
 
class QPixmap;

class ViewSegmentFilter : public QLabel
{
public:
  ViewSegmentFilter(QWidget *parent = 0);

  virtual void paintEvent(QPaintEvent *event);

  void setColorFilterSettings (const ColorFilterSettings &colorFilterSettings,
                               const QPixmap &pixmap);

  void setEnabled (bool enabled);

  void unsetColorFilterSettings ();
 
private:
 
  QColor colorFromSetting (ColorFilterMode colorFilterMode,
                           int foreground,
                           int hue,
                           int intensity,
                           int saturation,
                           int value) const;
  QColor colorHigh () const;
  QColor colorLow () const;
 
  ColorFilterSettings m_colorFilterSettings;
  bool m_filterIsDefined;
  QColor m_rgbBackground;
 
  bool m_enabled;
};
 
#endif // VIEW_SEGMENT_FILTER_H