Calculates the sizes of the rows and columns based on the absolute and
relative sizes specified in crSpec[R] and crSpec[C]
and the size of the container.
Indicates that the row/column should be allocated just enough space to
accomidate the minimum size of all components contained completely within
this row/column.
Indicates that the row/column should be allocated just enough space to
accomidate the preferred size of all components contained completely within
this row/column.