(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "bar-number-engraver.hh"
-#include "engraver-group-engraver.hh"
+
+#include "lily-guile.hh"
+#include "paper-column.hh"
+#include "paper-def.hh"
+#include "side-position-interface.hh"
+#include "staff-symbol.hh"
#include "text-item.hh"
#include "moment.hh"
+#include "engraver.hh"
+#include "protected-scm.hh"
-Bar_number_engraver::Bar_number_engraver()
+class Bar_number_engraver : public Engraver
{
- axis_ = Y_AXIS;
- type_ = "barNumber";
-}
-
+protected:
+ Text_item* text_p_;
+ Protected_scm visibility_lambda_;
+ Protected_scm staffs_;
+protected:
+ virtual void do_creation_processing ();
+ virtual void do_pre_move_processing ();
+ virtual void acknowledge_element (Score_element_info);
+ void create_items();
+ void do_process_music ();
+public:
+ VIRTUAL_COPY_CONS(Translator);
+ Bar_number_engraver();
+};
void
Bar_number_engraver::do_process_music ()
if (gh_number_p (bn) &&
!mp && now_mom () > Moment (0))
{
- create_items (0);
+ create_items ();
// guh.
text_p_->set_elt_property ("text",
ly_str02scm (to_str (gh_scm2int (bn)).ch_C()));
-
}
}
ADD_THIS_TRANSLATOR(Bar_number_engraver);
+
+Bar_number_engraver::Bar_number_engraver ()
+{
+ text_p_ =0;
+ staffs_ = SCM_EOL;
+}
+
+void
+Bar_number_engraver::do_creation_processing ()
+{
+ String t = "barNumberVisibilityFunction";
+ SCM proc = get_property (t);
+
+ if (gh_procedure_p (proc))
+ visibility_lambda_ = proc;
+}
+
+
+
+void
+Bar_number_engraver::acknowledge_element (Score_element_info inf)
+{
+ Score_element * s = inf.elem_l_;
+ if (dynamic_cast<Staff_symbol*> (s))
+ {
+ staffs_ = gh_cons (inf.elem_l_->self_scm_, staffs_);
+ }
+ 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", staffs_);
+ typeset_element (text_p_);
+ text_p_ =0;
+ }
+}
+
+
+void
+Bar_number_engraver::create_items ()
+{
+ if (text_p_)
+ return;
+
+ text_p_ = new Text_item;
+ text_p_->set_elt_property ("breakable", SCM_BOOL_T); // ugh
+ Side_position_interface staffside(text_p_);
+ staffside.set_axis (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")));
+ }
+
+ if (gh_procedure_p (visibility_lambda_))
+ text_p_->set_elt_property ("visibility-lambda",
+ visibility_lambda_);
+
+ announce_element (Score_element_info (text_p_, 0));
+}
+