DiagramDesigner/diagramCavas/include/graphicsItem/electricConnectLineItem.h

#ifndef ELECTRICCONNECTLINEITEM_H
#define ELECTRICCONNECTLINEITEM_H

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

struct Connection
{
    QUuid nSrcNodeId;
    QUuid nSrcPortId;
    HandleType srcType;
    PortPos    srcPos;
    QUuid nDestNodeId;
    QUuid nDestPortId;
    HandleType destType;
    PortPos destPos;

    Connection()
    {
        srcType = T_none;
        srcPos = P_top;
        destType = T_none;
        destPos = P_top;
    }

    Connection(const Connection& obj)
    {
        nSrcNodeId = obj.nSrcNodeId;
        nSrcPortId = obj.nSrcPortId;
        srcType = obj.srcType;
        srcPos = obj.srcPos;
        nDestNodeId = obj.nDestNodeId;
        nDestPortId = obj.nDestPortId;
        destType = obj.destType;
        destPos = obj.destPos;
    }

    Connection(QUuid nSNI,QUuid nSPI,HandleType sT,PortPos sPOS,QUuid nDNI,QUuid nDPI,HandleType dT,PortPos dPOS)
    {
        nSrcNodeId = nSNI;
        nSrcPortId = nSPI;
        srcType = sT;
        srcPos = sPOS;
        nDestNodeId = nDNI;
        nDestPortId = nDPI;
        destType = dT;
        destPos = dPOS;
    }
    bool operator==(const Connection& obj)
    {
        return ((obj.nSrcNodeId == nSrcNodeId)&&(obj.nSrcPortId == nSrcPortId)&&(obj.srcType == srcType)&&(obj.nDestNodeId == nDestNodeId)&&(obj.nDestPortId == nDestPortId)&&(obj.destType == destType));
    }

    Connection& operator=(const Connection& obj)
    {
        if(*this == obj)
            return *this;
        nSrcNodeId = obj.nSrcNodeId;
        nSrcPortId = obj.nSrcPortId;
        srcType = obj.srcType;
        srcPos = obj.srcPos;
        nDestNodeId = obj.nDestNodeId;
        nDestPortId = obj.nDestPortId;
        destType = obj.destType;
        destPos = obj.destPos;
        return *this;
    }
};

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

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

    void moveLine(QPointF);             //鼠标点击拖动
    void calculatePath();
    bool addConnection();
    void resetCurLine(){_curLine = QPoint();}

    //void updateConnection(QUuid 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;}
    Connection getConnection() const {return m_connectState;}
    //QUuid getOppositeId(QUuid);         //获取另一端点id
protected:
    virtual QPainterPath shape() const override;
    virtual QRectF boundingRect() const override;
    virtual void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*) override;
private:
    Connection          m_connectState;
    QPainterPath        m_points;
    QPainterPath        m_pointsBoundingRect;       //包裹点的矩形集合
    QList<QPointF>      m_lstPoints;
    QPoint              _curLine;               //参数1用点序号表示的当前线段起始点,参数2表示线段方向

    //QPointF        m_pStart;
    //QPointF        m_pEnd;
};

#endif