/****************************************************************************
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 ** Copyright (C) 2006-2007 Trolltech ASA. All rights reserved.
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 ** This file is part of the example classes of the Qt Toolkit.
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 ** License version 2.0 as published by the Free Software Foundation
 ** and appearing in the file LICENSE.GPL included in the packaging of
 ** this file.  Please review the following information to ensure GNU
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 ** In addition, as a special exception, Trolltech, as the sole copyright
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 ** Trolltech ASA (c) 2007
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 ****************************************************************************/
 
 #ifndef GRAPHWIDGET_H
 #define GRAPHWIDGET_H
 
 #include <QtGui/QGraphicsView>
 
 class Node;
 
 class GraphWidget : public QGraphicsView
 {
     Q_OBJECT
 
 public:
     GraphWidget();
 
     void itemMoved();
 
 protected:
     void keyPressEvent(QKeyEvent *event);
     void timerEvent(QTimerEvent *event);
     void wheelEvent(QWheelEvent *event);
     void drawBackground(QPainter *painter, const QRectF &rect);
 
     void scaleView(qreal scaleFactor);
 
 private:
     int timerId;
     Node *centerNode;
 };
 
 #endif