This tells the context that an allocation width or height (or both) have been decided for a group of rows. The context should store any allocations for internally aligned cells at this point so that they dont need to be recalculated at gtk.cell_area.CellArea.render time.
Returns the aligned height for the given width that context must store while collecting sizes for it’s rows.
Returns the aligned width for the given height that context must store while collecting sizes for it’s rows.
Clear any previously stored information about requested and allocated sizes for the context.