+
+Bar_number_engraver::Bar_number_engraver ()
+{
+ text_p_ =0;
+}
+
+void
+Bar_number_engraver::do_creation_processing ()
+{
+ /*
+ ugh: need to share code with mark_engraver
+ */
+ daddy_trans_l_->set_property ("staffsFound", SCM_EOL);
+}
+
+
+
+void
+Bar_number_engraver::acknowledge_element (Score_element_info inf)
+{
+ Score_element * s = inf.elem_l_;
+ if (Staff_symbol::has_interface (s))
+ {
+ SCM sts = get_property ("staffsFound");
+ SCM thisstaff = inf.elem_l_->self_scm ();
+ if (scm_memq (thisstaff, sts) == SCM_BOOL_F)
+ daddy_trans_l_->set_property ("staffsFound", gh_cons (thisstaff, sts));
+ }
+ else if (text_p_
+ && dynamic_cast<Item*> (s)
+ && s->get_elt_property ("break-align-symbol") == ly_symbol2scm ("Left_edge_item"))
+ {
+ /*
+ By default this would land on the Paper_column -- so why
+ doesn't it work when you leave this out? */
+ text_p_->set_parent (s, X_AXIS);
+ }
+}
+
+void
+Bar_number_engraver::do_pre_move_processing ()
+{
+ if (text_p_)
+ {
+ text_p_->set_elt_property ("side-support-elements", get_property ("staffsFound"));
+ typeset_element (text_p_);
+ text_p_ =0;
+ }
+}
+
+
+void
+Bar_number_engraver::create_items ()
+{
+ if (text_p_)
+ return;
+
+ SCM b = get_property ("basicBarNumberProperties");
+ text_p_ = new Item (b);
+ Side_position::set_axis(text_p_,Y_AXIS);
+
+ SCM prop = get_property ("barNumberDirection");
+ if (!isdir_b (prop))
+ {
+ prop = gh_int2scm (UP);
+ }
+ text_p_->set_elt_property ("direction", prop);
+
+ SCM padding = get_property ("barNumberScriptPadding");
+ if (gh_number_p(padding))
+ {
+ text_p_->set_elt_property ("padding", padding);
+ }
+ else
+ {
+ text_p_
+ ->set_elt_property ("padding",
+ gh_double2scm(paper_l ()->get_var ("interline")));
+ }
+
+
+ announce_element (text_p_, 0);
+}
+