/****************************************************************************
**
** Copyright (C) 2006-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** Licensees holding a valid Qt License Agreement may use this file in
** accordance with the rights, responsibilities and obligations
** contained therein.  Please consult your licensing agreement or
** contact sales@trolltech.com if any conditions of this licensing
** agreement are not clear to you.
**
** Further information about Qt licensing is available at:
** http://www.trolltech.com/products/qt/licensing.html or by
** contacting info@trolltech.com.
**
** 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>

#include <TDF_Label.hxx>

class Edge;
class GraphWidget;
class QGraphicsSceneMouseEvent;

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

    void setFunction(const TDF_Label& func);
    const TDF_Label& getFunction() const;

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

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

    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;
    TDF_Label myFunction;
};

#endif