#include <qwt_plot.h> #include "cpustat.h" #define HISTORY 60 // seconds class QwtPlotCurve; class CpuPlot : public QwtPlot { Q_OBJECT public: enum CpuData { User, System, Total, Idle, NCpuData }; CpuPlot(QWidget * = 0); const QwtPlotCurve *cpuCurve(int id) const { return data[id].curve; } protected: void timerEvent(QTimerEvent *e); private Q_SLOTS: void showCurve(QwtPlotItem *, bool on); private: struct { QwtPlotCurve *curve; double data[HISTORY]; } data[NCpuData]; double timeData[HISTORY]; int dataCount; CpuStat cpuStat; };