container-size in panel:dragable-mixin

Called to determine the minimum size of a container. See Geometry Management for more information.

• (send a-panel:dragable-mixin container-size info two exact integers in [0, 10000]
     info : list of list containing two exact integers in [0, 10000] and two booleans

  Computes the minimum size the panel would have to be in order to have the current percentages (see get-percentages).