1 files changed, 165 insertions, 0 deletions

diff --git a/noncore/applets/memoryapplet/memory.cpp b/noncore/applets/memoryapplet/memory.cpp
new file mode 100644
index 0000000..05349e4
--- a/dev/null
+++ b/noncore/applets/memoryapplet/memory.cpp
@@ -0,0 +1,165 @@
+/**********************************************************************
+** 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 <qlabel.h>
+#include <qtimer.h>
+#include <qfile.h>
+#include <qtextstream.h>
+#include <qlayout.h>
+#include <qwhatsthis.h>
+#include "graph.h"
+#include "memory.h"
+
+MemoryInfo::MemoryInfo( QWidget *parent, const char *name, WFlags f )
+    : QWidget( parent, name, f )
+{
+    QVBoxLayout *vb = new QVBoxLayout( this, 5 );
+
+    totalMem = new QLabel( this );
+    vb->addWidget( totalMem );
+
+    data = new GraphData();
+    graph = new BarGraph( this );
+    graph->setFrameStyle( QFrame::Panel | QFrame::Sunken );
+    vb->addWidget( graph, 1 );
+    graph->setData( data );
+
+    legend = new GraphLegend( this );
+    vb->addWidget( legend );
+    legend->setData( data );
+
+    swapMem = new QLabel( this );
+    vb->addWidget( swapMem );
+
+    swapdata = new GraphData();
+    swapgraph = new BarGraph( this );
+    swapgraph->setFrameStyle( QFrame::Panel | QFrame::Sunken );
+    vb->addWidget( swapgraph, 1 );
+    swapgraph->setData( swapdata );
+
+    swaplegend = new GraphLegend( this );
+    vb->addWidget( swaplegend );
+    swaplegend->setData( swapdata );
+
+    vb->addStretch( 1 );
+    updateData();
+
+    QTimer *t = new QTimer( this );
+    connect( t, SIGNAL( timeout() ), this, SLOT( updateData() ) );
+    t->start( 5000 );
+
+    QWhatsThis::add( this, tr( "This page shows how memory (i.e. RAM) is being allocated on your device.\nMemory is categorized as follows:\n\n1. Used - memory used to by Opie and any running applications.\n2. Buffers - temporary storage used to improve performance\n3. Cached - information that has recently been used, but has not been freed yet.\n4. Free - memory not currently used by Opie or any running applications." ) );
+
+}
+
+MemoryInfo::~MemoryInfo()
+{
+    delete data;
+}
+
+void MemoryInfo::updateData()
+{
+    QFile file( "/proc/meminfo" );
+
+    if ( file.open( IO_ReadOnly ) )
+    {
+        // local variables
+        QString line;
+        QString identifier;
+        QString value;
+        int position;
+        QTextStream t( &file );
+
+        while ( !t.atEnd() )
+        {
+            // read a line
+            line = t.readLine();
+
+            // extract identifier and value from line
+            position = line.find( ":" );
+            identifier = line.left( position );
+            value = line.mid( position + 1, line.length() - position - 3 );
+            value = value.stripWhiteSpace();
+
+            // copy values in variables
+            if ( identifier == "MemTotal" )
+            {
+                total = value.toULong();
+            } else if ( identifier == "MemFree" )
+            {
+                memfree = value.toULong();
+            } else if ( identifier == "Buffers" )
+            {
+                buffers = value.toULong();
+            } else if ( identifier == "Cached" )
+            {
+                cached = value.toULong();
+            } else if ( identifier == "SwapCached" )
+            {
+            } else if ( identifier == "SwapTotal" )
+            {
+                swaptotal = value.toULong();
+            } else if ( identifier == "SwapFree" )
+            {
+                swapfree = value.toULong();
+            }
+        }
+
+        file.close();
+
+        // calculate values
+        used = total - memfree;
+        swapused = swaptotal - swapfree;
+        realUsed = total - ( buffers + cached + memfree );
+
+        // visualize values
+        totalMem->setText( tr( "Total Memory: %1 kB" ).arg( total ) );
+        data->clear();
+        data->addItem( tr("Used (%1 kB)").arg(realUsed), realUsed );
+        data->addItem( tr("Buffers (%1 kB)").arg(buffers), buffers );
+        data->addItem( tr("Cached (%1 kB)").arg(cached), cached );
+        data->addItem( tr("Free (%1 kB)").arg(memfree), memfree );
+
+        graph->hide();
+        graph->show();
+        legend->update();
+
+        if (swaptotal > 0)
+        {
+            swapMem->setText( tr( "Total Swap: %1 kB" ).arg( swaptotal ) );
+            swapdata->clear();
+            swapdata->addItem( tr("Used (%1 kB)").arg(swapused), swapused );
+            swapdata->addItem( tr("Free (%1 kB)").arg(swapfree), swapfree );
+
+            swapMem->show();
+            swapgraph->show();
+            swaplegend->show();
+
+            swapgraph->repaint( FALSE );
+            swaplegend->update();
+        }
+        else
+        {
+            swapMem->hide();
+            swapgraph->hide();
+            swaplegend->hide();
+        }
+    }
+}