Method remove_unused_layers

src/laybasic/laybasic/layLayoutViewBase.cc:5717–5743

}

void
LayoutViewBase::remove_unused_layers ()
{
  bool any_deleted;
  do {

    std::vector <lay::LayerPropertiesConstIterator> sel;

    lay::LayerPropertiesConstIterator l = begin_layers ();
    while (! l.at_end ()) {
      if (! l->has_children () && l->bbox ().empty ()) {
        sel.push_back (l);
      }
      ++l;
    }

    std::sort (sel.begin (), sel.end (), CompareLayerIteratorBottomUp ());
    any_deleted = false;
    for (std::vector<lay::LayerPropertiesConstIterator>::iterator s = sel.begin (); s != sel.end (); ++s) {
      delete_layer (*s);
      any_deleted = true;
    }

  } while (any_deleted);

  emit_layer_order_changed ();
}

void 
LayoutViewBase::add_missing_layers ()