/******************************************************************************
 * QwtPolar Widget Library
 * Copyright (C) 2008   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#ifndef QWT_POLAR_PANNER_H
#define QWT_POLAR_PANNER_H

#include "qwt_global.h"
#include "qwt_panner.h"

class QwtPolarPlot;
class QwtPolarCanvas;

/*!
   \brief QwtPolarPanner provides panning of a polar plot canvas

   QwtPolarPanner is a panner for a QwtPolarCanvas, that
   adjusts the visible area after dropping
   the canvas on its new position.

   Together with QwtPolarMagnifier individual ways
   of navigating on a QwtPolarPlot widget can be implemented easily.

   \sa QwtPolarMagnifier
 */
class QWT_EXPORT QwtPolarPanner : public QwtPanner
{
    Q_OBJECT

  public:
    explicit QwtPolarPanner( QwtPolarCanvas* );
    virtual ~QwtPolarPanner();

    QwtPolarPlot* plot();
    const QwtPolarPlot* plot() const;

    QwtPolarCanvas* canvas();
    const QwtPolarCanvas* canvas() const;

  public Q_SLOTS:
    virtual void movePlot( int dx, int dy );

  protected:
    virtual void widgetMousePressEvent( QMouseEvent* ) QWT_OVERRIDE;
};

#endif