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#include <qapplication.h>
#include <qwidget.h>
#include <qfont.h>
#include <qlabel.h>
#include <qgroupbox.h>
#include <qlayout.h>
#include <qwt_thermo.h>
class ValueBar: public QWidget
{
public:
ValueBar(Qt::Orientation orientation,
const QString &text, QWidget *parent, double value = 0.0):
QWidget(parent)
{
d_label = new QLabel(text, this);
d_label->setFont(QFont("Helvetica", 10));
d_thermo = new QwtThermo(this);
d_thermo->setRange(0.0,100.0);
d_thermo->setValue(value);
d_thermo->setFont(QFont("Helvetica", 8));
d_thermo->setPipeWidth(6);
d_thermo->setScaleMaxMajor(6);
d_thermo->setScaleMaxMinor(5);
d_thermo->setMargin(10);
d_thermo->setFillColor(QColor("DarkMagenta"));
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->setSpacing(0);
if ( orientation == Qt::Horizontal )
{
d_label->setAlignment(Qt::AlignCenter);
d_thermo->setOrientation(orientation, QwtThermo::BottomScale);
layout->addWidget(d_label);
layout->addWidget(d_thermo);
}
else
{
d_label->setAlignment(Qt::AlignRight);
d_thermo->setOrientation(orientation, QwtThermo::LeftScale);
layout->addWidget(d_thermo, 10, Qt::AlignHCenter);
layout->addWidget(d_label, 0);
}
}
void setValue(double value)
{
d_thermo->setValue(value);
}
private:
QLabel *d_label;
QwtThermo *d_thermo;
};
class SysInfo : public QFrame
{
public:
SysInfo(QWidget *parent = NULL):
QFrame(parent)
{
QGroupBox *memBox = new QGroupBox("Memory Usage", this);
memBox->setFont(QFont("Helvetica", 10));
QVBoxLayout *memLayout = new QVBoxLayout(memBox);
memLayout->setMargin(15);
memLayout->setSpacing(5);
Qt::Orientation o = Qt::Horizontal;
memLayout->addWidget(new ValueBar(o, "Used", memBox, 57));
memLayout->addWidget(new ValueBar(o, "Shared", memBox, 17));
memLayout->addWidget(new ValueBar(o, "Cache", memBox, 30));
memLayout->addWidget(new ValueBar(o, "Buffers", memBox, 22));
memLayout->addWidget(new ValueBar(o, "Swap Used", memBox, 57));
memLayout->addWidget(new QWidget(memBox), 10); // spacer
QGroupBox *cpuBox = new QGroupBox("Cpu Usage", this);
cpuBox->setFont(QFont("Helvetica", 10));
QHBoxLayout *cpuLayout = new QHBoxLayout(cpuBox);
cpuLayout->setMargin(15);
cpuLayout->setSpacing(5);
o = Qt::Vertical;
cpuLayout->addWidget(new ValueBar(o, "User", cpuBox, 57));
cpuLayout->addWidget(new ValueBar(o, "Total", cpuBox, 73));
cpuLayout->addWidget(new ValueBar(o, "System", cpuBox, 16));
cpuLayout->addWidget(new ValueBar(o, "Idle", cpuBox, 27));
QHBoxLayout *layout = new QHBoxLayout(this);
layout->setMargin(10);
layout->addWidget(memBox, 10);
layout->addWidget(cpuBox, 0);
}
};
int main (int argc, char **argv)
{
QApplication a(argc, argv);
SysInfo info;
info.resize(info.sizeHint().expandedTo(QSize(600, 400)));
#if QT_VERSION < 0x040000
a.setMainWidget(&info);
#endif
info.show();
int rv = a.exec();
return rv;
}
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