--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/graphicsview/portedasteroids/ledmeter.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+ * KAsteroids - Copyright (c) Martin R. Jones 1997
+ *
+ * Part of the KDE project
+ */
+
+#include <qpainter.h>
+//Added by qt3to4:
+#include <QResizeEvent>
+#include <Q3Frame>
+#include "ledmeter.h"
+
+KALedMeter::KALedMeter( QWidget *parent ) : Q3Frame( parent )
+{
+    mCRanges.setAutoDelete( TRUE );
+    mRange = 100;
+    mCount = 20;
+    mCurrentCount = 0;
+    mValue = 0;
+    setMinimumWidth( mCount * 2 + frameWidth() );
+}
+
+void KALedMeter::setRange( int r )
+{
+    mRange = r;
+    if ( mRange < 1 )
+        mRange = 1;
+    setValue( mValue );
+    update();
+}
+
+void KALedMeter::setCount( int c )
+{
+    mCount = c;
+    if ( mCount < 1 )
+        mCount = 1;
+    setMinimumWidth( mCount * 2 + frameWidth() );
+    calcColorRanges();
+    setValue( mValue );
+    update();
+}
+
+void KALedMeter::setValue( int v )
+{
+    mValue = v;
+    if ( mValue > mRange )
+        mValue = mRange;
+    else if ( mValue < 0 )
+        mValue = 0;
+    int c = ( mValue + mRange / mCount - 1 ) * mCount / mRange;
+    if ( c != mCurrentCount )
+    {
+        mCurrentCount = c;
+        update();
+    }
+}
+
+void KALedMeter::addColorRange( int pc, const QColor &c )
+{
+    ColorRange *cr = new ColorRange;
+    cr->mPc = pc;
+    cr->mColor = c;
+    mCRanges.append( cr );
+    calcColorRanges();
+}
+
+void KALedMeter::resizeEvent( QResizeEvent *e )
+{
+    Q3Frame::resizeEvent( e );
+    int w = ( width() - frameWidth() - 2 ) / mCount * mCount;
+    w += frameWidth() + 2;
+    setFrameRect( QRect( 0, 0, w, height() ) );
+}
+
+void KALedMeter::drawContents( QPainter *p )
+{
+    QRect b = contentsRect();
+
+    unsigned cidx = 0;
+    int ncol = mCount;
+    QColor col = colorGroup().foreground();
+   
+    if ( !mCRanges.isEmpty() )
+    {
+        col = mCRanges.at( cidx )->mColor;
+        ncol = mCRanges.at( cidx )->mValue;
+    }
+    p->setBrush( col );
+    p->setPen( col );
+
+    int lw = b.width() / mCount;
+    int lx = b.left() + 1;
+    for ( int i = 0; i < mCurrentCount; i++, lx += lw )
+    {
+        if ( i > ncol )
+        {
+            if ( ++cidx < mCRanges.count() )
+            {
+                col = mCRanges.at( cidx )->mColor;
+                ncol = mCRanges.at( cidx )->mValue;
+                p->setBrush( col );
+                p->setPen( col );
+            }
+        }
+
+        p->drawRect( lx, b.top() + 1, lw - 1, b.height() - 2 );
+    }
+}
+
+void KALedMeter::calcColorRanges()
+{
+    int prev = 0;
+    ColorRange *cr;
+    for ( cr = mCRanges.first(); cr; cr = mCRanges.next() )
+    {
+        cr->mValue = prev + cr->mPc * mCount / 100;
+        prev = cr->mValue;
+    }
+}
+