src/GradientEditor.h

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#ifndef GRADIENTS_H
#define GRADIENTS_H

#include "common.h"
#include "ShadeWidget.h"
#include "HoverPoints.h"
//#include "Histogram.h"
#include "GradientRenderer.h"
#include <string>
#include <QtGui>

class GradientEditor : public QWidget
{
    Q_OBJECT
public:
  GradientEditor(QWidget *parent, Qt::WindowFlags flags);

    void setGradientStops(const QGradientStops &stops);

    //void setHistogram(Histogram* histogram);
    //void setRenderer(GradientRenderer* renderer);

public slots:
    void pointsUpdated();
    void showTransferFunction() { show(); }

    void showHistogram(const int*);
    void clearHistogram();

signals:
    void gradientStopsChanged(const QGradientStops &stops);

private:
    ShadeWidget *m_red_shade;
    ShadeWidget *m_green_shade;
    ShadeWidget *m_blue_shade;
    ShadeWidget *m_alpha_shade;

    QWidget* m_parent;

    QVBoxLayout *vbox;

public:
  void loadTransferFunction( std::string filename );
  void saveTransferFunction( std::string filename );


};




#endif // GRADIENTS_H

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