transferbox.h

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#ifndef TRANSFERBOX_H
#define TRANSFERBOX_H

#include <QWidget>
#include <QColorDialog>
#include "hoverpoints.h"

#define STEPS 150


class TransferBox : public QWidget
{
    Q_OBJECT
public:
    enum ShadeType {
        RedShade,
        GreenShade,
        BlueShade
    };

    explicit TransferBox(QWidget *parent = 0);
    QSize sizeHint() const {return QSize(300, 100); }
    void setPoints(QPolygonF points) {m_points = points;}
    void addColor(QPolygonF points, QColor color);
    void deleteColor(QPolygonF points);
    void changeColor(int index, QColor color);
signals:
    void valueChanged(float *value);
public slots:

private:
    void paintEvent(QPaintEvent *event);
    void mousePressEvent(QMouseEvent *event);
    QVector<QVector4D> interpolate();
    float* toFloatArray();

    QImage m_image;
    QColorDialog m_dialog;
    HoverPoints *m_hoverPoints;
    QVector<QColor> m_colors;
    QPolygonF m_points;
    
};

#endif // TRANSFERBOX_H