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#include <math.h>
#include <stdlib.h>
#include <config.h>
#ifdef HAVE_SYS_LOADAVG_H
#include <sys/loadavg.h> // e.g. Solaris
#endif
#include <qpainter.h>
#include <qbitmap.h>
#include <qdatetime.h>
#include <qdrawutil.h>
#include <qtimer.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kwin.h>
#include <kiconloader.h>
#include <kpixmap.h>
#include <kpixmapeffect.h>
#include <klocale.h>
#include <kstandarddirs.h>
#include <kpopupmenu.h>
#include <taskmanager.h>
#include "kaspopup.h"
#include "kastasker.h"
#include "kasloaditem.h"
#include "kasloaditem.moc"
KasLoadItem::KasLoadItem( KasBar *parent )
: KasItem( parent )
{
QTimer *t = new QTimer( this );
connect( t, SIGNAL( timeout() ), SLOT( updateDisplay() ) );
t->start( 1000 );
updateDisplay();
connect( this, SIGNAL(rightButtonClicked(QMouseEvent *)), SLOT(showMenuAt(QMouseEvent *) ) );
}
KasLoadItem::~KasLoadItem()
{
}
void KasLoadItem::updateDisplay()
{
double load[3];
int ret = getloadavg( load, 3 );
if ( ret == -1 )
return;
valuesOne.append( load[0] );
valuesFive.append( load[1] );
valuesFifteen.append( load[2] );
if ( valuesOne.count() > 2/*(extent()-2)*/ ) {
valuesOne.pop_front();
valuesFive.pop_front();
valuesFifteen.pop_front();
}
setText( QString("%1").arg( valuesOne.last(), 3, 'f', 2 ) );
}
void KasLoadItem::paint( QPainter *p )
{
double val = valuesOne.last();
double maxValue = 1.0;
double scaleVal = QMAX( val, valuesFive.last() );
if ( scaleVal >= maxValue )
maxValue = 2.0;
if ( scaleVal >= maxValue )
maxValue = 5.0;
if ( scaleVal >= maxValue )
maxValue = 10.0;
if ( scaleVal >= maxValue )
maxValue = 20.0;
if ( scaleVal >= maxValue )
maxValue = 50.0;
if ( scaleVal >= maxValue )
maxValue = 100.0;
double dh = extent()-16;
dh = dh / maxValue;
int h = (int) floor( dh * val );
int w = extent()-4;
h = (h > 0) ? h : 1;
w = (w > 0) ? w : 1;
KasItem::paint( p );
QColor light = kasbar()->colorGroup().highlight();
QColor dark = light.dark();
KPixmap pix;
pix.resize( w, h );
KPixmapEffect::gradient( pix, light, dark, KPixmapEffect::DiagonalGradient );
p->drawPixmap( 2, extent()-2-h, pix );
p->setPen( kasbar()->colorGroup().mid() );
for ( double pos = 0.2 ; pos < 1.0 ; pos += 0.2 ) {
int ypos = (int) floor((extent()-2) - (dh*maxValue*pos));
p->drawLine( 2, ypos, extent()-3, ypos );
}
}
void KasLoadItem::showMenuAt( QMouseEvent *ev )
{
hidePopup();
showMenuAt( ev->globalPos() );
}
void KasLoadItem::showMenuAt( QPoint p )
{
mouseLeave();
kasbar()->updateMouseOver();
KasTasker *bar = dynamic_cast<KasTasker *> (KasItem::kasbar());
if ( !bar )
return;
KPopupMenu *menu = bar->contextMenu();
menu->exec( p );
}
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