+ GtkCellAreaBoxContextPrivate *priv = context->priv;
+ GtkCellAreaBoxAllocation *allocs;
+ GtkRequestedSize *sizes;
+ gint n_expand_groups = 0;
+ gint i, n_groups, position, vis_position;
+ gint extra_size, extra_extra;
+ gint avail_size = size;
+
+ sizes = _gtk_cell_area_box_context_get_requests (context, area, orientation, for_size, &n_groups);
+ n_expand_groups = count_expand_groups (context);
+
+ /* First start by naturally allocating space among groups */
+ avail_size -= (n_groups - 1) * spacing;
+ for (i = 0; i < n_groups; i++)
+ avail_size -= sizes[i].minimum_size;
+
+ if (avail_size > 0)
+ avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, sizes);
+ else
+ avail_size = 0;
+
+ /* Calculate/distribute expand for groups */
+ if (n_expand_groups > 0)
+ {
+ extra_size = avail_size / n_expand_groups;
+ extra_extra = avail_size % n_expand_groups;
+ }
+ else
+ extra_size = extra_extra = 0;
+
+ allocs = g_new (GtkCellAreaBoxAllocation, n_groups);
+
+ for (vis_position = 0, position = 0, i = 0; i < n_groups; i++)
+ {
+ allocs[i].group_idx = GPOINTER_TO_INT (sizes[i].data);
+
+ if (priv->align[allocs[i].group_idx])
+ vis_position = position;
+
+ allocs[i].position = vis_position;
+ allocs[i].size = sizes[i].minimum_size;
+
+ if (group_expands (context, allocs[i].group_idx))
+ {
+ allocs[i].size += extra_size;
+ if (extra_extra)
+ {
+ allocs[i].size++;
+ extra_extra--;
+ }
+ }
+
+ position += allocs[i].size;
+ position += spacing;
+
+ if (_gtk_cell_area_box_group_visible (area, allocs[i].group_idx))
+ {
+ vis_position += allocs[i].size;
+ vis_position += spacing;
+ }
+ }
+
+ if (n_allocs)
+ *n_allocs = n_groups;
+
+ g_free (sizes);
+
+ return allocs;