fix 1505 and suck sysinfo files into the tree instead of cross referencing

eventually we may find that graph and load are of universal usage, then
they should appear in some kind of library

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;
+    }
+}
+