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

 /****************************************************************************
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 ** Copyright (C) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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 ** This file is part of the documentation of the Qt Toolkit.
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 ** Licensees holding a valid Qt License Agreement may use this file in
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 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
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 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 #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


Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.4.3