Initial revision

1 files changed, 183 insertions, 0 deletions

diff --git a/noncore/settings/sysinfo/graph.cpp b/noncore/settings/sysinfo/graph.cpp
new file mode 100644
index 0000000..0b02bf7
--- a/dev/null
+++ b/noncore/settings/sysinfo/graph.cpp
@@ -0,0 +1,183 @@
+/**********************************************************************
+** 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 <qpainter.h>
+#include <qpixmap.h>
+#include "graph.h"
+
+void GraphData::clear()
+{
+    names.clear();
+    values.resize(0);
+}
+
+void GraphData::addItem( const QString &name, int value )
+{
+    names.append( name );
+    values.resize( values.size() + 1 );
+    values[values.size()-1] = value;
+}
+
+Graph::Graph(QWidget *parent, const char *name, WFlags f )
+    : QFrame( parent, name, f )
+{
+}
+
+PieGraph::PieGraph(QWidget *parent, const char *name, WFlags f )
+    : Graph( parent, name, f )
+{
+}
+
+void PieGraph::drawContents( QPainter *p )
+{
+    int size = QMIN( contentsRect().width(), contentsRect().height() ) - 1;
+
+    int total = 0;
+    for ( unsigned i = 0; i < data->count(); i++ )
+        total += data->value(i);
+
+    int angle = 0;
+    for ( unsigned i = 0; i < data->count(); i++ ) {
+        int len;
+        if ( i == data->count() - 1 || !total )
+            len = 5760 - angle;
+        else
+            len = data->value(i) * 5760 / total;
+        QColor col;
+        col.setHsv( i * 360 / data->count(), 255, 255 );
+        p->setBrush( col );
+        p->drawPie ( contentsRect().x(), contentsRect().y(),
+                     size, size, angle, len+32 );
+        angle += len;
+    }
+}
+
+BarGraph::BarGraph(QWidget *parent, const char *name, WFlags f )
+    : Graph( parent, name, f )
+{
+    setMinimumHeight( 10 );
+    setMaximumHeight( 45 );
+}
+
+void BarGraph::drawContents( QPainter *p )
+{
+    int h = contentsRect().height();
+    int y = contentsRect().top();
+
+    int total = 0;
+    for ( unsigned i = 0; i < data->count(); i++ )
+        total += data->value(i);
+
+    int pos = 0;
+    for ( unsigned i = 0; i < data->count(); i++ ) {
+        int len;
+        if ( i == data->count() - 1 || !total )
+            len = contentsRect().width() - pos;
+        else
+            len = data->value(i) * contentsRect().width() / total;
+        QColor col;
+        col.setHsv( i * 360 / data->count(), 255, 255 );
+        drawSegment( p, QRect(contentsRect().x() + pos, y, len, h), col );
+        pos += len;
+    }
+}
+
+void BarGraph::drawSegment( QPainter *p, const QRect &r, const QColor &c )
+{
+    if ( QPixmap::defaultDepth() > 8 ) {
+        QColor topgrad = c.light(170);
+        QColor botgrad = c.dark();
+
+        int h1, h2, s1, s2, v1, v2;
+        topgrad.hsv( &h1, &s1, &v1 );
+        botgrad.hsv( &h2, &s2, &v2 );
+        int ng = r.height();
+        for ( int j =0; j < ng; j++ ) {
+            p->setPen( QColor( h1 + ((h2-h1)*j)/(ng-1),
+                        s1 + ((s2-s1)*j)/(ng-1),
+                        v1 + ((v2-v1)*j)/(ng-1),  QColor::Hsv ) );
+            p->drawLine( r.x(), r.top()+j, r.x()+r.width(), r.top()+j );
+        }
+    } else {
+        p->fillRect( r.x(), r.top(), r.width(), r.height(), c );
+    }
+}
+
+
+GraphLegend::GraphLegend( QWidget *parent, const char *name, WFlags f )
+    : QFrame( parent, name, f )
+{
+    horz = FALSE;
+}
+
+void GraphLegend::setOrientation(Orientation o)
+{
+    horz = o == Horizontal;
+}
+
+void GraphLegend::drawContents( QPainter *p )
+{
+    int total = 0;
+    for ( unsigned i = 0; i < data->count(); i++ )
+        total += data->value(i);
+
+    int tw = width()/data->count()-1;
+    int th = height()/(horz ? 1 : data->count());
+    if ( th > p->fontMetrics().height() )
+        th = p->fontMetrics().height();
+    int x = 0;
+    int y = 0;
+    for ( unsigned i = 0; i < data->count(); i++ ) {
+        QColor col;
+        col.setHsv( i * 360 / data->count(), 255, 255 );
+        p->setBrush( col );
+        p->drawRect( x+1, y+1, th - 2, th - 2 );
+        p->drawText( x+th + 1, y + p->fontMetrics().ascent()+1, data->name(i) );
+        if ( horz ) {
+            x += tw;
+        } else {
+            y += th;
+        }
+    }
+}
+
+QSize GraphLegend::sizeHint() const
+{
+    int th = fontMetrics().height() + 2;
+    int maxw = 0;
+    for ( unsigned i = 0; i < data->count(); i++ ) {
+        int w = fontMetrics().width( data->name(i) );
+        if ( w > maxw )
+            maxw = w;
+    }
+    if ( 0 && horz ) {
+        return QSize( maxw * data->count(), th );
+    } else {
+        return QSize( maxw, th * data->count() );
+    }
+}
+
+void GraphLegend::setData( const GraphData *p )
+{
+    data = p;
+    int th = fontMetrics().height();
+    setMinimumHeight( th * ( horz ? 1 : data->count() ) );
+    updateGeometry();
+}