TransferWidget.hpp

#ifndef TRANSFORMWIDGET_HPP_
#define TRANSFORMWIDGET_HPP_

#include <QGraphicsView>
#include <QGraphicsScene>
#include <QPainterPath>
#include <QList>

#include "TransferPoint.hpp"

class TransferWidget : public QGraphicsView
{
    Q_OBJECT

public:

    struct TransferFeature {
        float pos;
        float sigma;
        float alpha;
        QColor color;
    };

    TransferWidget(QWidget *parent);

    void redrawScene();

    std::vector<TransferFeature> getTransferControlValues();

    int getNumPoints();

    void clear();

    void setNewRGBXY(float _red, float _green, float _blue, float _x, float _y);

    void resizeEvent(QResizeEvent *event);

signals:
    void transferChanged();

private:
    QGraphicsScene *scene;
    QGraphicsPathItem *background;
    QList<QGraphicsLineItem *> lines;
    QList<TransferPoint *> points;

    void fillBackground();
    
    void mousePressEvent(QMouseEvent *event);

    void mouseMoveEvent(QMouseEvent *event);
};

#endif /* TRANSFORMWIDGET_HPP_ */