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Viewing changes to qwt-5.0.1/examples/cpuplot/cpupiemarker.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Fathi Boudra
  • Date: 2007-10-05 15:20:41 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20071005152041-qmybqh4fj9jejyo2
Tags: 5.0.2-2
http://bugs.debian.org/437877
http://bugs.debian.org/443110
* Handle nostrip build option. (Closes: #437877)
* Build libqwt5-doc package in binary-indep target. (Closes: #443110)

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qwt-5.0.1/examples/cpuplot/cpupiemarker.cpp
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#include <qpainter.h>
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#include <qwt_scale_map.h>
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#include <qwt_plot_curve.h>
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#include "cpuplot.h"
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#include "cpupiemarker.h"
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CpuPieMarker::CpuPieMarker()
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{
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    setZ(1000);
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#if QT_VERSION >= 0x040000
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    setRenderHint(QwtPlotItem::RenderAntialiased, true);
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#endif
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}
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int CpuPieMarker::rtti() const
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{
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    return QwtPlotItem::Rtti_PlotUserItem;
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}
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void CpuPieMarker::draw(QPainter *p, 
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    const QwtScaleMap &, const QwtScaleMap &,
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    const QRect &rect) const
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{
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    const CpuPlot *cpuPlot = (CpuPlot *)plot();
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    const QwtScaleMap yMap = cpuPlot->canvasMap(QwtPlot::yLeft);
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    const int margin = 5;
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    QRect pieRect;
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    pieRect.setX(rect.x() + margin);
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    pieRect.setY(rect.y() + margin);
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    pieRect.setHeight(yMap.transform(80.0));
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    pieRect.setWidth(pieRect.height());
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    const int dataType[] = { CpuPlot::User, CpuPlot::System, CpuPlot::Idle };
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    int angle = (int)(5760 * 0.75);
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    for ( unsigned int i = 0; 
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        i < sizeof(dataType) / sizeof(dataType[0]); i++ )
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    {
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        const QwtPlotCurve *curve = cpuPlot->cpuCurve(dataType[i]);
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        if ( curve->dataSize() > 0 )
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        {
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            const int value = (int)(5760 * curve->y(0) / 100.0);
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            p->save();
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            p->setBrush(QBrush(curve->pen().color(), Qt::SolidPattern));
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            if ( value != 0 )
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                p->drawPie(pieRect, -angle, -value);
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            p->restore();
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            angle += value;
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        }
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    }
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}
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