ScientificPlotEvent.h

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/PlotUtil/ScientificPlotEvent.h
//! @brief     Defines class ScientificPlotEvent
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#ifndef BORNAGAIN_GUI_VIEW_PLOTUTIL_SCIENTIFICPLOTEVENT_H
#define BORNAGAIN_GUI_VIEW_PLOTUTIL_SCIENTIFICPLOTEVENT_H
 
#include "GUI/View/PlotUtil/PlotEventInfo.h"
#include <QObject>
#include <memory>
 
class ScientificPlot;
class QMouseEvent;
class QCustomPlot;
 
//! Helps ScientificPlot to handle mouse events. Particularly, it constructs a valid
//! status string. Can be extended to play a role of event filter.
 
class ScientificPlotEvent : public QObject {
    Q_OBJECT
 
public:
    explicit ScientificPlotEvent(ScientificPlot* scientific_plot);
    ~ScientificPlotEvent() override;
 
    void setMouseTrackingEnabled(bool enable);
 
signals:
    void enteringPlot();
    void leavingPlot();
    void positionChanged(double x, double y);
 
public slots:
    void onCustomMouseMove(QMouseEvent* event);
 
private:
    ScientificPlot* scientificPlot();
    const ScientificPlot* scientificPlot() const;
    QCustomPlot* customPlot();
    PlotEventInfo currentPlotDescriptor(QMouseEvent* event) const;
 
    ScientificPlot* m_plot;
    PlotEventInfo m_prevPos;
};
 
#endif // BORNAGAIN_GUI_VIEW_PLOTUTIL_SCIENTIFICPLOTEVENT_H