Allow the coordinate position_hbox to expand and fill.

By allowing to fill and expand, shrinking becomes possible.

Signed-off-by: Bert Timmerman <bert.timmerman@xs4all.nl>
Changed the width of the relative coordinate label.

By changing the single line label into a multi line label,
width is traded for height.

Signed-off-by: Bert Timmerman <bert.timmerman@xs4all.nl>
Removed padding pixels.

Signed-off-by: Bert Timmerman <bert.timmerman@xs4all.nl>