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#ifdef QWT_QTOPIA
#include <qpe/qpeapplication.h>
#endif
#include <qapplication.h>
#include <qvbox.h>
#include <qlabel.h>
#include <qpainter.h>
#include <qwt_plot_layout.h>
#include <qwt_plot_canvas.h>
#include "cpupiemarker.h"
#include "cpuaveragecurve.h"
#include "cpuplot.h"
class TimeScaleDraw: public QwtScaleDraw
{
public:
TimeScaleDraw(const QTime &base):
baseTime(base)
{
}
virtual QString label(double v) const
{
QTime upTime = baseTime.addSecs((int)v);
return upTime.toString();
}
private:
QTime baseTime;
};
CpuPlot::CpuPlot(QWidget *parent):
QwtPlot(parent),
dataCount(0)
{
plotLayout()->setAlignCanvasToScales(TRUE);
setCanvasBackground(Qt::darkGray);
setAutoLegend(TRUE);
setLegendPosition(QwtPlot::Right);
setAxisTitle(QwtPlot::xBottom, " System Uptime [h:m:s]");
setAxisScaleDraw(QwtPlot::xBottom,
new TimeScaleDraw(cpuStat.upTime()));
setAxisScale(QwtPlot::xBottom, 0, HISTORY);
setAxisLabelRotation(QwtPlot::xBottom, -50.0);
setAxisLabelAlignment(QwtPlot::xBottom, Qt::AlignLeft | Qt::AlignBottom);
setAxisTitle(QwtPlot::yLeft, "Cpu Usage [%]");
setAxisScale(QwtPlot::yLeft, 0, 100);
data[Total].curve = insertCurve("Total");
setCurvePen(data[Total].curve, QPen(Qt::black));
setCurveBrush(data[Total].curve,
QBrush(QColor(), Qt::SolidPattern));
data[Idle].curve = insertCurve("Idle");
setCurvePen(data[Idle].curve, QPen(Qt::lightGray));
setCurveBrush(data[Idle].curve,
QBrush(QColor(), Qt::Dense4Pattern));
data[User].curve = insertCurve("User");
setCurvePen(data[User].curve, QPen(Qt::blue));
setCurveBrush(data[User].curve,
QBrush(QColor(), Qt::Dense2Pattern));
data[System].curve = insertCurve("System");
setCurvePen(data[System].curve, QPen(Qt::red));
setCurveBrush(data[System].curve,
QBrush(QColor(), Qt::Dense2Pattern));
CpuAverageCurve *curve = new CpuAverageCurve(this);
data[Average].curve = insertCurve(curve);
setCurveTitle(data[Average].curve, "Average");
setCurvePen(data[Average].curve, QPen(Qt::NoPen));
setCurveBrush(data[Average].curve,
QBrush(QColor(Qt::black), Qt::BDiagPattern));
CpuPieMarker *pie = new CpuPieMarker(this);
(void)insertMarker(pie);
toggleCurve(data[Total].curve);
toggleCurve(data[Idle].curve);
toggleCurve(data[Average].curve);
for ( int i = 0; i < HISTORY; i++ )
timeData[HISTORY - 1 - i] = i;
(void)startTimer(1000); // 1 second
replot();
connect(this, SIGNAL(legendClicked(long)),
SLOT(toggleCurve(long)));
}
void CpuPlot::drawCanvasItems(QPainter *painter, const QRect &rect,
const QwtArray<QwtDiMap> &map, const QwtPlotPrintFilter &pfilter) const
{
const QwtDiMap &yMap = map[QwtPlot::yLeft];
QRect r = canvas()->rect();
r.setHeight(yMap.transform(80.0) - r.top());
painter->fillRect(r, QColor(Qt::white));
r.setTop(yMap.transform(80.0));
r.setHeight(yMap.transform(40.0) - yMap.transform(80.0));
painter->fillRect(r, QColor(Qt::gray));
QwtPlot::drawCanvasItems(painter, rect, map, pfilter);
}
void CpuPlot::timerEvent(QTimerEvent *)
{
for ( int i = dataCount; i > 0; i-- )
{
for ( int c = 0; c < NCpuData; c++ )
{
if ( i < HISTORY )
data[c].data[i] = data[c].data[i-1];
}
}
cpuStat.statistic(data[User].data[0], data[System].data[0]);
data[Total].data[0] = data[User].data[0] +
data[System].data[0];
data[Idle].data[0] = 100.0 - data[Total].data[0];
data[Average].data[0] = cpuStat.average();
if ( dataCount < HISTORY )
dataCount++;
for ( int j = 0; j < HISTORY; j++ )
timeData[j]++;
setAxisScale(QwtPlot::xBottom,
timeData[HISTORY - 1], timeData[0]);
for ( int c = 0; c < NCpuData; c++ )
{
setCurveRawData(data[c].curve,
timeData, data[c].data, dataCount);
}
replot();
}
void CpuPlot::toggleCurve(long curveId)
{
QwtPlotCurve *c = curve(curveId);
if ( c )
{
c->setEnabled(!c->enabled());
replot();
}
}
int main(int argc, char **argv)
{
#ifdef QWT_QTOPIA
QPEApplication a(argc, argv);
#else
QApplication a(argc, argv);
#endif
QVBox vBox;
vBox.setCaption("Cpu Plot");
CpuPlot *plot = new CpuPlot(&vBox);
plot->setTitle("History");
plot->setMargin(5);
QString info("Press the legend to en/disable a curve");
(void)new QLabel(info, &vBox);
a.setMainWidget(&vBox);
vBox.resize(500,300);
vBox.show();
return a.exec();
}
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