#ifndef ELECTRICCONNECTLINEITEM_H
#define ELECTRICCONNECTLINEITEM_H

#include <QPainterPath>
#include "graphicsBaseItem.h"

struct Connection
{
    int nSrcNodeId;
    int nSrcPort;
    HandleType srcType;
    int nDestNodeId;
    int nDestPort;
    HandleType destType;

    Connection()
    {

        nSrcNodeId = -1;
        nSrcPort = -1;
        srcType = T_none;
        nDestNodeId = -1;
        nDestPort = -1;
        destType = T_none;
    }

    Connection(int nSNI,int nSP,HandleType sT,int nDNI,int nDP,HandleType dT)
    {
        nSrcNodeId = nSNI;
        nSrcPort = nSP;
        srcType = sT;
        nDestNodeId = nDNI;
        nDestPort = nDP;
        destType = dT;
    }
    bool operator==(Connection& obj)
    {
        return ((obj.nSrcNodeId == nSrcNodeId)&&(obj.nSrcPort == nSrcPort)&&(obj.srcType == srcType)&&(obj.nDestNodeId == nDestNodeId)&&(obj.nDestPort == nDestPort)&&(obj.destType == destType));
    }

    Connection& operator=(Connection& obj)
    {
        if(*this == obj)
            return *this;
        nSrcNodeId = obj.nSrcNodeId;
        nSrcPort = obj.nSrcPort;
        srcType = obj.srcType;
        nDestNodeId = obj.nDestNodeId;
        nDestPort = obj.nDestPort;
        destType = obj.destType;
        return *this;
    }
};

class ElectricConnectLineItem : public GraphicsBaseItem
{
public:
    ElectricConnectLineItem(QGraphicsItem *parent = 0);
    virtual ~ElectricConnectLineItem();

    void setStartPoint(const QPointF& p){m_pStart = p;}
    void setEndPoint(const QPointF& p){m_pEnd = p;}
    QPainterPath getPoints(void) const { return m_points; }

    void calculatePath();
    bool addConnection();

    void updateConnection(int callerId,QPointF pos);           //外部调用的更新函数,id为调用者id
    void setConnection(Connection con){m_connectState = con;}
protected:
    virtual QPainterPath shape();
    virtual void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*);
private:
    Connection      m_connectState;
    QPainterPath   m_points;
    QPointF        m_pStart;
    QPointF        m_pEnd;
};

#endif