plot.h
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#include <qwt_plot.h>
#include <qwt_interval.h>
#include <qwt_system_clock.h>
class QwtPlotCurve;
class QwtPlotMarker;
class QwtPlotDirectPainter;
class Plot: public QwtPlot
{
Q_OBJECT
public:
Plot(QWidget * = NULL);
virtual ~Plot();
void start();
virtual void replot();
public Q_SLOTS:
void setIntervalLength(double);
protected:
virtual void showEvent(QShowEvent *);
virtual void resizeEvent(QResizeEvent *);
virtual void timerEvent(QTimerEvent *);
private:
void initGradient();
void updateCurve();
void incrementInterval();
QwtPlotMarker *d_origin;
QwtPlotCurve *d_curve;
int d_paintedPoints;
QwtPlotDirectPainter *d_directPainter;
QwtInterval d_interval;
int d_timerId;
QwtSystemClock d_clock;
};