NodeEdge.hpp

#pragma once
//---------------------------------------------------------------------------------//


//---------------------------------------------------------------------------------//
#include <QGraphicsPathItem>
//---------------------------------------------------------------------------------//


//---------------------------------------------------------------------------------//
#include "Socket.hpp"
//---------------------------------------------------------------------------------//


enum NodeEdgeType
{
    DIRECT = 0,
    BEZIER = 1
};


//---------------------------------------------------------------------------------//
class NodeEdge : public QGraphicsObject, public QGraphicsPathItem
{
    Q_OBJECT
    public:
        // constructor:
        explicit NodeEdge(
                    NodeEdgeType            type_   = NodeEdgeType::DIRECT,
                    std::shared_ptr<Socket> start_  = nullptr,
                    std::shared_ptr<Socket> finish_ = nullptr
                 );

        // deleted:
        NodeEdge(const NodeEdge&)              = delete;
        NodeEdge(NodeEdge&&)                   = delete;
        NodeEdge& operator= (const NodeEdge&)  = delete;
        NodeEdge& operator= (NodeEdge&& other) = delete;

        // destructor:
        ~NodeEdge();

        // methods:
        void setSource      (QPointF source);
        void setDestination (QPointF destination);

        void updatePathDirect();
        void updatePathBezier();

    protected:
        virtual QRectF boundingRect ()                               const override;
        virtual void paint(
                        QPainter* painter,
                        const QStyleOptionGraphicsItem* option = nullptr,
                        QWidget* widget = nullptr)                         override;

        virtual bool         contains(const QPointF &point)          const override;
        virtual bool         isObscuredBy(const QGraphicsItem *item) const override;
        virtual QPainterPath opaqueArea()                            const override;
        virtual QPainterPath shape()                                 const override;
        virtual int          type()                                  const override;

    private:
        NodeEdgeType            nodeType;
        std::shared_ptr<Socket> start;
        std::shared_ptr<Socket> finish;

    private:
        QPointF source      = {0.0, 0.0};
        QPointF destination = {0.0, 0.0};
};