QGraphicsItem конструктор с параметрами

#include <QGraphicsItem>
#include <QObject>
#include <QWidget>
#include <QPainter>
//
#include "pixelitem.h"

//----------------------------------------------------------
//
PixelItem::PixelItem(int x, int y, bool bitState)
{
    int x_c = x;
    int y_c = y;
    bool BitState = bitState;
    //
    QRectF rect = boundingRect();
    setFlag(ItemIsMovable);
}
//----------------------------------------------------------
//
PixelItem::~PixelItem()
{

}
//----------------------------------------------------------
//
QRectF PixelItem::boundingRect() const
{
    // outer most edges
    return QRectF(0,0,10,10);
}
//----------------------------------------------------------
//
void PixelItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    QPen pen(Qt::black, 1);
    QBrush br(Qt::SolidPattern);
    painter->setPen(pen);
    if(BitState == true) painter->setBrush(br);
    painter->drawRect(this->x_c, this->y_c, 10, 10);
    Q_UNUSED(option);
    Q_UNUSED(widget);
}
//----------------------------------------------------------
//
void PixelItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    //Pressed = true;
    update();
    QGraphicsItem::mousePressEvent(event);
}
//----------------------------------------------------------
//
void PixelItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    //Pressed = false;
    update();
    QGraphicsItem::mouseReleaseEvent(event);
}



#ifndef PIXELITEM_H
#define PIXELITEM_H

#include <QObject>
#include <QWidget>
#include <QPainter>
#include <QGraphicsItem>

class PixelItem : public QGraphicsItem
{

public:
    PixelItem(int x, int y, bool bitState);
    ~PixelItem();
    int x_c = 0;
    int y_c = 0;
    bool BitState = false;

    QRectF boundingRect() const;

    // overriding paint()
    void paint(QPainter * painter,
               const QStyleOptionGraphicsItem * option,
               QWidget * widget);
protected:
    // overriding mouse events
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
};

#endif // PIXELITEM_H