source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "bar-number-engraver.hh"
-#include "timing-translator.hh"
-#include "timing-engraver.hh"
-#include "engraver-group-engraver.hh"
-#include "text-item.hh"
+#include "lily-guile.hh"
+#include "paper-column.hh"
+#include "paper-def.hh"
+#include "side-position-interface.hh"
+#include "staff-symbol.hh"
+#include "item.hh"
+#include "moment.hh"
+#include "engraver.hh"
+#include "translator-group.hh"
-Bar_number_engraver::Bar_number_engraver()
+
+class Bar_number_engraver : public Engraver
{
- axis_ = Y_AXIS;
- type_ = "barNumber";
- visibility_lambda_
- = ly_ch_C_eval_scm ("postbreak-only-visibility");
-}
+protected:
+ Item* text_p_;
+
+protected:
+ virtual void do_pre_move_processing ();
+ virtual void acknowledge_element (Score_element_info);
+ virtual void do_creation_processing ();
+ void create_items();
+ void do_process_music ();
+public:
+ VIRTUAL_COPY_CONS(Translator);
+ Bar_number_engraver();
+};
void
-Bar_number_engraver::do_process_requests ()
+Bar_number_engraver::do_process_music ()
{
- Translator *tr = daddy_grav_l ()->get_simple_translator ("Timing_engraver");
- Timing_translator *time = dynamic_cast<Timing_translator*>(tr);
-
// todo include (&&!time->cadenza_b_ )
- if (!time->measure_position () && now_mom () > Moment (0))
+ SCM bn = get_property("currentBarNumber");
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+
+ if (gh_number_p (bn) &&
+ !mp && now_mom () > Moment (0))
{
- create_items (0);
-
- text_p_->text_str_ = to_str (time->bars_i ());
+ 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;
+}
+
+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 ("BarNumber");
+ text_p_ = new Item (b);
+ Side_position::set_axis(text_p_,Y_AXIS);
+
+ announce_element (text_p_, 0);
+}
+