Diffstat (limited to 'noncore/applets/memoryapplet/load.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/applets/memoryapplet/load.cpp | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/noncore/applets/memoryapplet/load.cpp b/noncore/applets/memoryapplet/load.cpp new file mode 100644 index 0000000..d9d7a66 --- a/dev/null +++ b/noncore/applets/memoryapplet/load.cpp @@ -0,0 +1,212 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#include <stdio.h> + +#include <qfile.h> +#include <qlayout.h> +#include <qlabel.h> +#include <qpainter.h> +#include <qpixmap.h> +#include <qtextstream.h> +#include <qtimer.h> +#include <qwhatsthis.h> + +#include "load.h" + +LoadInfo::LoadInfo( QWidget *parent, const char *name, WFlags f ) + : QWidget( parent, name, f ) +{ + QVBoxLayout *vb = new QVBoxLayout( this, 6 ); + + QString cpuInfo = getCpuInfo(); + if ( !cpuInfo.isNull() ) + vb->addWidget( new QLabel( cpuInfo, this ) ); + vb->addWidget( new Load( this ), 100 ); + QLabel *l = new QLabel( this ); + l->setPixmap( makeLabel( red, tr("Application CPU usage (%)") ) ); + vb->addWidget( l, 1 ); + l = new QLabel( this ); + l->setPixmap( makeLabel( green, tr("System CPU usage (%)") ) ); + vb->addWidget( l, 1 ); + vb->addStretch(50); + + QWhatsThis::add( this, tr( "This page shows how much this device's processor is being used." ) ); +} + +QPixmap LoadInfo::makeLabel( const QColor &col, const QString &text ) +{ + int h = fontMetrics().height(); + QPixmap pm( 20 + fontMetrics().width( text ), h ); + QPainter p( &pm ); + p.fillRect( pm.rect(), colorGroup().background() ); + p.fillRect( 0, h/2-4, 18, h/2+3, black ); + p.setPen( col ); + p.drawLine( 2, h/2, 15, h/2 ); + p.setPen( colorGroup().text() ); + p.drawText( 20, fontMetrics().ascent(), text ); + + return pm; +} + +QString LoadInfo::getCpuInfo() +{ + bool haveInfo = FALSE; + QString info = tr("Type: "); + QFile f( "/proc/cpuinfo" ); + if ( f.open( IO_ReadOnly ) ) { + QTextStream ts( &f ); + + while ( !ts.atEnd() ) { + QString s = ts.readLine(); + if ( s.find( "model name" ) == 0 ) { + info += s.mid( s.find( ':' ) + 2 ); + haveInfo = TRUE; + } else if ( s.find( "cpu MHz" ) == 0 ) { + double mhz = s.mid( s.find( ':' ) + 2 ).toDouble(); + info += " " + QString::number( mhz, 'f', 0 ); + info += "MHz"; + break; + } else if ( s.find( "Processor" ) == 0 ) { + info += s.mid( s.find( ':' ) + 2 ); + haveInfo = TRUE; + break; +#ifdef __MIPSEL__ + } else if ( s.find( "cpu model" ) == 0 ) { + info += " " + s.mid( s.find( ':' ) + 2 ); + break; + } else if ( s.find( "cpu" ) == 0 ) { + info += s.mid( s.find( ':' ) + 2 ); + haveInfo = TRUE; +#endif + } + } + } + + if ( !haveInfo ) + info = QString(); + + return info; +} + +Load::Load( QWidget *parent, const char *name, WFlags f ) + : QWidget( parent, name, f ) +{ + setMinimumHeight( 30 ); + setBackgroundColor( black ); + points = 100; + setMinimumWidth( points ); + userLoad = new double [points]; + systemLoad = new double [points]; + for ( int i = 0; i < points; i++ ) { + userLoad[i] = 0.0; + systemLoad[i] = 0.0; + } + maxLoad = 1.3; + QTimer *timer = new QTimer( this ); + connect( timer, SIGNAL(timeout()), SLOT(timeout()) ); + timer->start( 2000 ); + gettimeofday( &last, 0 ); + first = TRUE; + timeout(); +} + +void Load::paintEvent( QPaintEvent * ) +{ + QPainter p( this ); + + int h = height() - 5; + + int mult = (int)(h / maxLoad); + + p.setPen( gray ); + p.drawLine( 0, h - mult, width(), h - mult ); + p.drawText( 0, h - mult, "100" ); + p.drawText( 0, h, "0" ); + + p.setPen( green ); + for ( int i = 1; i < points; i++ ) { + int x1 = (i - 1) * width() / points; + int x2 = i * width() / points; + p.drawLine( x1, h - systemLoad[i-1] * mult, + x2, h - systemLoad[i] * mult ); + } + + p.setPen( red ); + for ( int i = 1; i < points; i++ ) { + int x1 = (i - 1) * width() / points; + int x2 = i * width() / points; + p.drawLine( x1, h - userLoad[i-1] * mult, + x2, h - userLoad[i] * mult ); + } +} + +void Load::timeout() +{ + int user; + int usernice; + int sys; + int idle; + FILE *fp; + fp = fopen( "/proc/stat", "r" ); + fscanf( fp, "cpu %d %d %d %d", &user, &usernice, &sys, &idle ); + fclose( fp ); + struct timeval now; + gettimeofday( &now, 0 ); + int tdiff = now.tv_usec - last.tv_usec; + tdiff += (now.tv_sec - last.tv_sec) * 1000000; + tdiff /= 10000; + + int udiff = user - lastUser; + int sdiff = sys - lastSys; + if ( tdiff > 0 ) { + double uload = (double)udiff / (double)tdiff; + double sload = (double)sdiff / (double)tdiff; + if ( !first ) { + for ( int i = 1; i < points; i++ ) { + userLoad[i-1] = userLoad[i]; + systemLoad[i-1] = systemLoad[i]; + } + userLoad[points-1] = uload; + systemLoad[points-1] = sload; +// scroll( -width()/points, 0, QRect( 0, 0, width() - width()/points + 1, height() ) ); + repaint( TRUE ); + double ml = 1.3; + /* + for ( int i = 0; i < points; i++ ) { + if ( userLoad[i] > ml ) + ml = userLoad[i]; + } + */ + if ( maxLoad != ml ) { + maxLoad = ml; + update(); + } + } + + last = now; + lastUser = user; + lastSys = sys; + first = FALSE; + } else if ( tdiff < 0 ) { + last = now; + } +} + |