plotzoomer.h

//
// author
//
// Copyright (c) CSIRO 2015
//
#ifndef PLOTZOOMER_H_
#define PLOTZOOMER_H_

#include "ocurvesconfig.h"

#include <qwt_plot_zoomer.h>

class QAction;
class QMenu;
class QSettings;
class QwtPlotCanvas;

class PlotZoomer : public QwtPlotZoomer
{
  Q_OBJECT

public:
  typedef QwtPlotZoomer Super;

  enum ZoomMode
  {
    ZoomBoth,
    ZoomX,
    ZoomY,

    ZoomModeCount
  };

  static const unsigned int AxisY = 0;
  static const unsigned int AxisX = 2;

  explicit PlotZoomer(QwtPlotCanvas *plot, bool doReplot = true);

  ~PlotZoomer();

  inline ZoomMode zoomMode() const { return _zoomMode; }

  QAction *zoomBothAction() const { return _zoomActions[ZoomBoth]; }

  QAction *zoomXAction() const { return _zoomActions[ZoomX]; }

  QAction *zoomYAction() const { return _zoomActions[ZoomY]; }

  void loadSettings(QSettings &settings);

  void saveSettings(QSettings &settings);

  void fitIfAutoScaling();

  void zoomToFit(bool replot = true);

  void zoom(const QRectF &rect) override;

  void zoom(int up) override;

public slots:
  void setZoomMode(ZoomMode mode);

  inline void setZoomModeBoth() { setZoomMode(ZoomBoth); }

  inline void setZoomModeX() { setZoomMode(ZoomX); }

  inline void setZoomModeY() { setZoomMode(ZoomY); }

  void zoomSync(const QRectF &rect);

signals:
  void zoomModeChanged(int mode);

  void zoomModeBoth(bool isset);

  void zoomModeX(bool isset);

  void zoomModeY(bool isset);

protected slots:
  void zoomActionToggled(bool checked);

protected:
  void widgetMousePressEvent(QMouseEvent *event) override;

  void widgetMouseReleaseEvent(QMouseEvent *event) override;

  void widgetWheelEvent(QWheelEvent *event) override;

  bool end(bool ok = true) override;

private slots:
  void contextMenuTimeout();

private:
  ZoomMode _zoomMode; 
  unsigned _contextMenuTimeMs;  
  quint16 _contextMenuSequenceNumber;
  quint16 _contextMenuExpectedSeq;

  QMenu *_contextMenu;  
  QAction *_zoomActions[ZoomModeCount]; 

  bool _ignoreSync; 
};


#endif // PLOTZOOMER_H_