qwt_plot_panner.h

#ifndef QWT_PLOT_PANNER_H
#define QWT_PLOT_PANNER_H
#include "qwt_global.h"
#include "qwt_picker.h"
 
// qt
class QWidget;
 
// qwt
class QwtPlot;
 
class QWT_EXPORT QwtPlotPanner : public QwtPicker
{
    Q_OBJECT
    QWT_DECLARE_PRIVATE(QwtPlotPanner)
public:
    // Constructor
    explicit QwtPlotPanner(QWidget* canvas);
    // Destructor
    ~QwtPlotPanner() override;
 
    // Get the canvas widget
    QWidget* canvas();
    // Get the canvas widget (const)
    const QWidget* canvas() const;
 
    // Get the plot widget
    QwtPlot* plot();
    // Get the plot widget (const)
    const QwtPlot* plot() const;
 
    // Set the orientations for panning
    void setOrientations(Qt::Orientations);
    // Get the orientations for panning
    Qt::Orientations orientations() const;
    // Check if an orientation is enabled
    bool isOrientationEnabled(Qt::Orientation) const;
 
    // Set the mouse button and modifiers for panning
    void setMouseButton(Qt::MouseButton button, Qt::KeyboardModifiers modifiers = Qt::NoModifier);
    // Get the mouse button and modifiers for panning
    void getMouseButton(Qt::MouseButton& button, Qt::KeyboardModifiers& modifiers) const;
 
public Q_SLOTS:
    // Move the canvas by dx, dy
    void moveCanvas(int dx, int dy);
 
Q_SIGNALS:
    void panned(int dx, int dy);
 
protected:
    virtual void widgetMousePressEvent(QMouseEvent* mouseEvent) override;
    virtual void move(const QPoint&) override;
    virtual bool end(bool ok = true) override;
 
private:
    void init();
};
#endif  // QWT_PLOT_PANNER_H