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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>
#include <qwt_color_map.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->setOrientation( orientation );
d_thermo->setScale( 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->setFillBrush( Qt::darkMagenta );
#if 0
QwtLinearColorMap *colorMap =
new QwtLinearColorMap( Qt::blue, Qt::red );
colorMap->addColorStop( 0.2, Qt::yellow );
colorMap->addColorStop( 0.3, Qt::cyan );
colorMap->addColorStop( 0.4, Qt::green );
colorMap->addColorStop( 0.5, Qt::magenta );
colorMap->setMode( QwtLinearColorMap::FixedColors );
d_thermo->setColorMap( colorMap );
#endif
QVBoxLayout *layout = new QVBoxLayout( this );
layout->setMargin( 0 );
layout->setSpacing( 0 );
if ( orientation == Qt::Horizontal )
{
d_label->setAlignment( Qt::AlignCenter );
d_thermo->setScalePosition( QwtThermo::LeadingScale );
layout->addWidget( d_label );
layout->addWidget( d_thermo );
}
else
{
d_label->setAlignment( Qt::AlignRight );
d_thermo->setScalePosition( QwtThermo::TrailingScale );
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 ) ) );
info.show();
int rv = a.exec();
return rv;
}
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