QVariant UBGraphicsCurtainItemDelegate::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value)
{
    if (change == QGraphicsItem::ItemZValueHasChanged)
    {
//        mFrame->setZValue(mDelegated->zValue() + 1);

//        foreach(DelegateButton* button, mButtons)
//        {
//            button->setZValue(mDelegated->zValue() + 2);
//            button->setZValue(mDelegated->zValue() + 2);
//        }
    }

    if (change == QGraphicsItem::ItemVisibleHasChanged)
    {
        UBGraphicsScene* ubScene = qobject_cast<UBGraphicsScene*>(mDelegated->scene());
        if(ubScene)
            ubScene->setModified(true);
    }

    return UBGraphicsItemDelegate::itemChange(change, value);
}