`paint` method isn't called after `QGraphicsView` scroll

[rippa]

Hi, I have a `QGraphicsItem` on scene. `hoverEnterEvent` is reimplemented for this item. This is the code from `hoverEnterEvent`:

grabber = new agnt::A_CornerGrabber(A_CornerGrabber::TOP_RIGHT,this,8,3);
    assert(grabber);
    grabber->installSceneEventFilter(this);
    update(boundingRect());

grabber = new agnt::A_CornerGrabber(A_CornerGrabber::TOP_RIGHT,this,8,3);
    assert(grabber);
    grabber->installSceneEventFilter(this);
    update(boundingRect());

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`A_CornerGrabber` is a class inherited from `QGraphicsRectItem`. The idea is when you hover item a grabber appears so you can drag it to resize main item.

It works OK until I scroll graphicsview so, that first item is not whole in the view. And afetr this hoverEnterEvent still called, grabber ctor still called, but `grabber->paint()` method isnt called anymore.
Here is `grabber->paint()`:

painter->setPen(Qt::NoPen);
        QRectF pRect  = parent->boundingRect();
        painter->drawRect(rect());
        setPos(pRect.bottomRight().x()-size-adjust,pRect.bottomRight().y()-size-adjust);

painter->setPen(Qt::NoPen);
        QRectF pRect  = parent->boundingRect();
        painter->drawRect(rect());
        setPos(pRect.bottomRight().x()-size-adjust,pRect.bottomRight().y()-size-adjust);

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sceneEventFilter()

if(event->type()== 155)
    {
        QGraphicsSceneMouseEvent* me = dynamic_cast<QGraphicsSceneMouseEvent*>(event);
        if(!me) return true;
        if(rect().adjusted(0,0,me->pos().x()-me->lastPos().x(),0).width()>xStep)
        {
            prepareGeometryChange();
            int relX = me->pos().x() - xOffset;
            int newRelX = me->lastPos().x() - xOffset;
            int steps = relX/xStep;
            int newSteps = newRelX/xStep;
            setWidth(getWidth()+xStep*(steps-newSteps));
            setInitialTime(QString::number(getTime().toInt()+(steps - newSteps) ) );// my func
        }
    }
    if(event->type()== 187)
    {
        dynamic_cast<agnt::A_GntGV*>(scene()->views().at(0))->timeChanged(getT(),getId());
        //my func, has nothing to do with painting
    }
 
    if(event->type()==160||event->type()==162)
        return false;
    return true;

if(event->type()== 155)
    {
        QGraphicsSceneMouseEvent* me = dynamic_cast<QGraphicsSceneMouseEvent*>(event);
        if(!me) return true;
        if(rect().adjusted(0,0,me->pos().x()-me->lastPos().x(),0).width()>xStep)
        {
            prepareGeometryChange();
            int relX = me->pos().x() - xOffset;
            int newRelX = me->lastPos().x() - xOffset;
            int steps = relX/xStep;
            int newSteps = newRelX/xStep;
            setWidth(getWidth()+xStep*(steps-newSteps));
            setInitialTime(QString::number(getTime().toInt()+(steps - newSteps) ) );// my func
        }
    }
    if(event->type()== 187)
    {
        dynamic_cast<agnt::A_GntGV*>(scene()->views().at(0))->timeChanged(getT(),getId());
        //my func, has nothing to do with painting
    }

    if(event->type()==160||event->type()==162)
        return false;
    return true;

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Why is that?


P.S. Everything worked fine some time ago before I made some changes to my code. Unfortunately I can't restore old code and I cant understand what exactly spoiled `grabber->paint()`.

Thanks

EDIT: I think sceneEventFilter() doesnt even matter. The problem persist if I comment

//grabber->installSceneEventFilter(this);

//grabber->installSceneEventFilter(this);

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