creator/plugins/kparts/codeeditorpart/GraphicsItem/OrientedEdgeItem.h

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/* This file is part of Rocs,
   Copyright (C) 2008 by:
   Tomaz Canabrava <tomaz.canabrava@gmail.com>
   Ugo Sangiori <ugorox@gmail.com>

   Rocs is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   Rocs is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Step; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef ORIENTEDEDGEITEM_H
#define ORIENTEDEDGEITEM_H

#include <QGraphicsLineItem>

class QGraphicsSceneMouseEvent;
class Edge;
class Node;
class QGraphicsSimpleTextItem;

class OrientedEdgeItem : public QObject, public QGraphicsPathItem
{
        Q_OBJECT
    public:
        explicit OrientedEdgeItem( Edge* edge, QGraphicsItem* parent = 0 );
        virtual ~OrientedEdgeItem();
        enum { Type = UserType + 3 };

        int type() const
        {
            return Type;
        }

        Edge* edge()
        {
            return _edge;
        }

    protected:
        void mousePressEvent( QGraphicsSceneMouseEvent* event );

        void mouseReleaseEvent( QGraphicsSceneMouseEvent* event );

        void paint( QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0 );

    public slots:
        void remove();
        void updatePos();
        void updateAttributes();
    private:
        Edge* _edge;
        int _index;
        bool _loop;
        QPainterPath createCurves() const;
        QPolygonF createArrow( const QPointF& Pos1, const QPointF& Pos2 ) const;
        QPainterPath createLoop( QPointF pos ) const;
        void connectSignals();

        QGraphicsSimpleTextItem* _name;
        QGraphicsSimpleTextItem* _value;
};

#endif

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