plot.h

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#ifndef PLOT_H
#define PLOT_H
 
#include <config.h>
 
#include "graph.h"
 
#include <vector>

typedef struct _plot_item_t {
    double   frame_ts;    
    double   rel_cap_ts;  
    uint32_t frame_num;   
    unsigned idx;         
    double   value;       
} plot_item_t;
 
class QCPRange;

class Plot : public Graph {
    Q_OBJECT
 
public:
    explicit Plot(QCustomPlot *parent, QCPAxis *keyAxis = nullptr, QCPAxis *valueAxis = nullptr);

    ~Plot();

    void setFilterField(const QString &filter, const QString &field);

    void setPlotStyle(PlotStyles style);

    void setVisible(bool visible);

    QString configError() const { return config_err_; }

    double startTime() const;

    void setPlotStartTime(double start_time);

    bool absoluteTime() const { return abs_time_; }

    void setAbsoluteTime(bool abs_time);

    void setYAxisFactor(double y_axis_factor);

    int hfIndex() const { return hf_index_; }

    const std::vector<plot_item_t> &getItems() const { return items_; }

    void removeTapListener();

    static bool itemCompare(const plot_item_t &a, const plot_item_t &b);

    static bool itemRelCapCompare(const plot_item_t &a, const plot_item_t &b);

    static void setAxisColor(QCPAxis *axis, const QPen &pen);

    uint32_t packetFromTime(double ts) const;

    void makeCsv(QTextStream &stream) const;

    QCPRange recentDrawnDataRange(int count) const;
 
public slots:
    void captureEvent(const CaptureEvent &e);
 
 
signals:
    void requestReplot();

    void requestRecalc();

    void requestRetap();
 
private:
    // Static trampoline callbacks passed to register_tap_listener.
    static void tap_reset(void *plot_ptr);
    static tap_packet_status tap_packet(void *plot_ptr, packet_info *pinfo, epan_dissect_t *edt, const void *data, tap_flags_t flags);
    static void tap_draw(void *plot_ptr);

    void tapReset();
    tap_packet_status tapPacket(packet_info *pinfo, epan_dissect_t *edt, const void *data _U_, tap_flags_t flags _U_);
    void tapDraw();
 
    nstime_t first_packet_;   
    double plot_start_time_;  
    bool abs_time_;           
    bool tap_registered_;     
    bool retap_needed_;       
    int hf_index_;            
    QString full_filter_;     
    QString config_err_;      
 
    std::vector<plot_item_t> items_; 
};
 
#endif // PLOT_H