edge.hpp

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/*
 Modular Psi - A graph tracker of the Parapsychologcal scientific development
 Copyright (C) 2005 Leonardo Stern

 This program is free software; you can redistribute it and/or modify it under
 the terms of the Common Public License Version 1.0 or (at your option) any later version.

 This program 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 Common Public License for more details.

 You should have received a copy of the Common Public License along with this program;
*/

#ifndef EDGE_HPP
#define EDGE_HPP

#include <qwidget.h>
#include <qpoint.h>
#include <qpointarray.h>
#include <qstring.h>
#include "nodelist.hpp"
#include "node.hpp"
#include "graph.hpp"


class Edge : public QWidget 
{
    Q_OBJECT

    
public:
    Edge (QWidget *parent, Node* origem, Node* destino );
    ~Edge();
    float trust() { return p_trust; };
    QString trustString()
    {
        QString r;
        r.setNum(p_trust);
        return r;
    }
    float combinedTrust() { return p_combinedTrust; }
    Node* source()  { return p_source; };
    Node* target()  { return p_target; };
    QPoint start() const { return p_start; };
    QPoint end() const { return p_end; };
    QString sourceName();
    QString targetName();
    bool changed() { return p_changed; };
    
    void setChanged(bool alterado);
    void setTrust (float confianca);
    void setTrust (QString s_trust );
    void setCombinedTrust (float combined);
    void setSource ( Node *origem );
    void setTarget ( Node *destino );
    void setStart ( QPoint inicio );
    void setEnd ( QPoint fim );
    QPointArray vNodes;
    QPointArray arrowPoints;
    
    QPoint DL;
    void processBends();
    void changeActive( QColor thisColor);

    Node opposite (Node* an_end);
    
    void draw(QPainter* painter);
    QColor lineColor;
    QColor propLineColor;
    
    
protected:
    
    void paintEvent(QPaintEvent *event);
    void mousePressEvent (QMouseEvent *e);
    void updateMask();
    float p_trust;
    float p_combinedTrust;
    bool p_changed;
    Node* p_source;
    Node* p_target;
    QPoint p_start;
    QPoint p_end;
    void init();
};

#endif //EDGE_HPP