|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# node.h Example File
graphicsview/elasticnodes/node.h

     /****************************************************************************
     **
     ** Copyright (C) 2006-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** 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
     ** General Public Licensing requirements will be met:
     ** http://trolltech.com/products/qt/licenses/licensing/opensource/
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
     ** or contact the sales department at sales@trolltech.com.
     **
     ** In addition, as a special exception, Trolltech gives you certain
     ** additional rights. These rights are described in the Trolltech GPL
     ** Exception version 1.0, which can be found at
     ** http://www.trolltech.com/products/qt/gplexception/ and in the file
     ** GPL_EXCEPTION.txt in this package.
     **
     ** In addition, as a special exception, Trolltech, as the sole copyright
     ** holder for Qt Designer, grants users of the Qt/Eclipse Integration
     ** plug-in the right for the Qt/Eclipse Integration to link to
     ** functionality provided by Qt Designer and its related libraries.
     **
     ** Trolltech reserves all rights not expressly granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef NODE_H
     #define NODE_H

     #include <QGraphicsItem>
     #include <QList>

     class Edge;
     class GraphWidget;
     class QGraphicsSceneMouseEvent;

     class Node : public QGraphicsItem
     {
     public:
         Node(GraphWidget *graphWidget);

         void addEdge(Edge *edge);
         QList<Edge *> edges() const;

         enum { Type = UserType + 1 };
         int type() const { return Type; }

         void calculateForces();
         bool advance();

         QRectF boundingRect() const;
         QPainterPath shape() const;
         void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

     protected:
         QVariant itemChange(GraphicsItemChange change, const QVariant &value);

         void mousePressEvent(QGraphicsSceneMouseEvent *event);
         void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

     private:
         QList<Edge *> edgeList;
         QPointF newPos;
         GraphWidget *graph;
     };

     #endif