plotview.h

//
// author Kazys Stepanas
//
// Copyright (c) CSIRO 2015
//
#ifndef PLOTVIEW_H_
#define PLOTVIEW_H_

#include "ocurvesconfig.h"

#include <QColor>
#include <QFrame>
#include <QStringList>
#include <QVector>

class Curves;
class PlotDataCurve;
class PlotInstance;
class PlotPanner;
class PlotZoomer;

class QSettings;
class QwtLegend;
class QwtPlot;

namespace Ui
{
  class PlotView;
}

class PlotView : public QFrame
{
  Q_OBJECT

public:
  typedef QFrame Super;

  static const int SharedLegend;  

  enum ToolMode
  {
    MultiTool,  
    PanTool,    
    ZoomTool,   

    ToolModeCount
  };

  PlotView(Curves *curves, QWidget *parent = nullptr);

  ~PlotView();

  void showNone();

  void loadSettings(QSettings &settings);

  void saveSettings(QSettings &settings);

  inline QwtPlot *plot() { return _plot; }

  inline const QwtPlot *plot() const { return _plot; }

  inline ToolMode toolMode() const { return _toolMode; }

  int legendPosition() const;

  inline bool synchronised() const { return _synchronised; }

  inline PlotZoomer *zoomer() const { return _zoom; }

  inline PlotPanner *panner() const { return _panner; }

  void setHighlight(bool active);

  bool isHighlighted() const;

  void updateActive(const QStringList &sourceNames, const QStringList &curveNames);

  const QStringList &activeSourceNames() const { return _activeSourceNames; }

  const QStringList &visibleCurveNames() const { return _visibleCurveNames; }

public slots:
  void zoomToFit();

  void setSynchronised(bool sync);

  void setToolMode(ToolMode mode);

  inline void setMultiTool() { setToolMode(MultiTool); }

  inline void setPanTool() { setToolMode(PanTool); }

  inline void setZoomTool() { setToolMode(ZoomTool); }

  void setLegendPosition(int pos);

  void copyToClipboard();

signals:
  void focusGained();

  void focusLost();

  void synchronisedChanged(bool sync);

  void toolModeChanged(ToolMode mode);

  void legendChanged(QwtLegend *legend, int position);

protected slots:
  void addCurve(PlotInstance *curve);

  void removeCurve(const PlotInstance *curve);

  void curveDataChanged(const PlotInstance *curve);

  void curvesCleared();

  void legendSelectionChanged(int index);

  void toolActionToggled(bool checked);

private:
  friend class FocusPlot;

  void viewFocusGained();

  void viewFocusLost();

  QwtPlot *_plot;       
  Curves *_curves;      
  PlotZoomer *_zoom;    
  PlotPanner *_panner;  
  QStringList _activeSourceNames; 
  QStringList _visibleCurveNames; 
  QList<PlotDataCurve *> _displayCurves;  
  Ui::PlotView *_ui;    
  ToolMode _toolMode;   
  bool _synchronised;   
  bool _suppressEvents; 

  QAction *_toolModeActions[ToolModeCount];
};

#endif // PLOTVIEW_H_