Method canPan

lib/documentview/documentview.cpp:362–373

    }

    bool canPan() const
    {
        if (!q->canZoom()) {
            return false;
        }

        const QSize zoomedImageSize = mDocument->size() * q->zoom();
        const QSize viewPortSize = q->boundingRect().size().toSize();
        const bool imageWiderThanViewport = zoomedImageSize.width() > viewPortSize.width();
        const bool imageTallerThanViewport = zoomedImageSize.height() > viewPortSize.height();
        return (imageWiderThanViewport || imageTallerThanViewport);
    }

    void setDragPixmap(const QPixmap &pix)
    {