+ if (_matrix->count_of_our_type ((*i)->bundle->nchannels()) == 0) {
+ /* draw non-connectable indicators for the case where the *i bundle
+ has no channels of our type (and hence has 1 dummy channel)
+ */
+ y = by;
+ for (uint32_t l = 0; l < _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()); ++l) {
+ draw_non_connectable_indicator (cr, x, y);
+ y += grid_spacing ();
+ }
+ }
+
+ by += _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()) * grid_spacing();