How to extract collision coordinates (x,y) between objects in QGraphicsScene and send the coordinates (x,y) to QLineEdit

I am trying to extract collision coordinate between two rectangles moving inside a QGraphicsScene and send these coordinates to a QLineEdit. I was reading this source and this source. They advice to use QGraphicsItem::collidesWithPath but no success.

This is the snipped of code that does the collision with my own implementation:

MyItem::MyItem()
{
    angle = (qrand() % 360);
    setRotation(angle);
    speed = 5;
    int startX = 0;
    int startY = 0;
    if((qrand() % 1)){
        startX = (qrand() % 200);
        startY = (qrand() % 200);
    }else{
        startX = (qrand() % -100);
        startY = (qrand() % -100);
    }
    setPos(mapToParent(startX, startY));
}

void MyItem::paint(QPainter *painter,
                   const QStyleOptionGraphicsItem *option,
                   QWidget *widget)
{
    QRectF rec = boundingRect();
    QBrush brush(Qt::gray);
    if(scene()->collidingItems(this).isEmpty()){
        brush.setColor(Qt::green); // no collision
    }else{
        brush.setColor(Qt::red);  // yes collision
        doCollision();
    }
    painter->fillRect(rec, brush);
    painter->drawRect(rec);
}

void MyItem::advance(int phase)
{
    if(!phase) return;
    QPointF location = this->pos();
    setPos(mapToParent(0, -(speed)));
}

void MyItem::doCollision()
{
    if((qrand() %1)) {
        setRotation(rotation() + (180+(qrand() % 10)));
    }else{
        setRotation(rotation() + (180+(qrand() % -10)));
    }
    // see if the new position is in bounds
    QPointF newPoint = mapToParent(-(boundingRect().width()), -(boundingRect().width() + 2));
    if(!scene()->sceneRect().contains((newPoint))){
        newPoint = mapToParent(0, 0); // move it back in bounds
    }else{
        setPos(newPoint); // set new position
    }
}

How to extract collision coordinates (x,y) between objects in QGraphicsScene and send the coordinates (x,y) to QLineEdit? Thanks for shedding light on this issue.