grapher.h

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#ifndef GRAPHER_H
#define GRAPHER_H

#define DEBUG_MODELSPEED
#undef DEBUG_MODELSPEED

#include <qwt_data.h>

class QAbstractItemModel;

class PlotDataModel : public QwtData {
public:
    PlotDataModel(QAbstractItemModel *model, int xColumn, int yColumn);
    void initialize();
    size_t size() const;
    double x(size_t i) const;
    double y(size_t i) const;
    QwtData *copy() const ;

private:
    void setModel(QAbstractItemModel *model, int xColumn, int yColumn);
    QAbstractItemModel *model() const;

private:
    QAbstractItemModel *sourceModel;
    int xColumn;
    int yColumn;
};

#include <QWidget>

class PlotCurve;
class PlotWidget;
class BaseQueryModel;

class Grapher : public QWidget
{   Q_OBJECT
public:
    Grapher(BaseQueryModel *base, QWidget *parent = 0);

private:
    BaseQueryModel *base;
    PlotWidget* plotWidget;

public slots:
    void addCurve(PlotCurve *curve);
    void removeCurve(PlotCurve* curve);
    void removeCurve(int logicalIndex);

private slots:
#ifdef DEBUG_MODELSPEED
    void testQuerySpeed();
#endif //DEBUG_MODELSPEED
};

#endif // GRAPHER_H