graphwidget.h

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#pragma once
#ifndef GRAPHWIDGET_H
#define GRAPHWIDGET_H


#include <QGraphicsView>
#include<QThread>

class Node;


//! [0]
class GraphWidget : public QGraphicsView
{
    Q_OBJECT

public:
    Node *centerNode;
    Node *node1;
    Node *node2;
    Node *node3;
    Node *node4;
    Node *node5;
    Node *node6;
    Node *node7;
    GraphWidget(QWidget *parent = 0x0,QGraphicsScene *scene=nullptr);
    void addNode(int count);
    void itemMoved();
    ~GraphWidget() override;

signals:
    void nodeChange1();
    void nodeChange2();
    void nodeChange3();
    void nodeChange4();
    void nodeChange5();
    void nodeChange6();
    void nodeChange7();
    void nodeChangeCentral();
    //void nodeChange1();

public slots:
    void shuffle();
    void zoomIn();
    void zoomOut();
    void scaleNode(double *r);
protected:
    void keyPressEvent(QKeyEvent *event) override;
    void timerEvent(QTimerEvent *event) override;
#if QT_CONFIG(wheelevent)
    void wheelEvent(QWheelEvent *event) override;
#endif
    void drawBackground(QPainter *painter, const QRectF &rect) override;
    //void drawUpdate(QString text);
    void scaleView(qreal scaleFactor);

private:
    int timerId;



};
//! [0]

#endif // GRAPHWIDGET_H