Use logical extents of the layout instead of ink extents. According to

Use logical extents of the layout instead of ink extents. According to

2006-01-25  Behdad Esfahbod  <behdad@gnome.org>

        * gtk/gtklabel.c (get_layout_location): Use logical extents of the
        layout instead of ink extents.  According to Pango docs, that's what
        should be used for placement.  Moreover, simply use
        pango_layout_get_pixel_size instead of getting the extents and
        dividing ourselves.