source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#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 "protected-scm.hh"
+#include "translator-group.hh"
+
class Bar_number_engraver : public Engraver
{
protected:
Item* text_p_;
-
- 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();
+ virtual void stop_translation_timestep ();
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_music ();
+ void create_items ();
+ TRANSLATOR_DECLARATIONS( Bar_number_engraver );
};
+
+/*
+ TODO: more advanced formatting via SCM function, perhaps barnumbers
+ every 5 measures? */
+
void
-Bar_number_engraver::do_process_music ()
+Bar_number_engraver::process_music ()
{
- // todo include (&&!time->cadenza_b_ )
- SCM bn = get_property("currentBarNumber");
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ // todo include (&&!time->cadenza_b_)
+
+ SCM wb = get_property ("whichBar");
- if (gh_number_p (bn) &&
- !mp && now_mom () > Moment (0))
+ if (gh_string_p (wb))
{
- create_items ();
-
- // guh.
- text_p_->set_elt_property ("text",
- ly_str02scm (to_str (gh_scm2int (bn)).ch_C()));
+ SCM bn = get_property ("currentBarNumber");
+ SCM smp = get_property ("measurePosition");
+ int ibn = gh_number_p (bn) ? gh_scm2int(bn) : 1;
+
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ if (mp.main_part_ == Rational (0)
+ && ibn != 1)
+ {
+ create_items ();
+
+ // guh.
+ text_p_->set_grob_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 ()
-{
}
-
void
-Bar_number_engraver::acknowledge_element (Score_element_info inf)
+Bar_number_engraver::acknowledge_grob (Grob_info inf)
{
- Score_element * s = inf.elem_l_;
- if (Staff_symbol::has_interface (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"))
+ Grob * s = inf.grob_l_;
+ if (text_p_
+ && dynamic_cast<Item*> (s)
+ && s->get_grob_property ("break-align-symbol") == ly_symbol2scm ("left-edge"))
{
/*
By default this would land on the Paper_column -- so why
}
void
-Bar_number_engraver::do_pre_move_processing ()
+Bar_number_engraver::stop_translation_timestep ()
{
if (text_p_)
{
- text_p_->set_elt_property ("side-support-elements", staffs_);
- typeset_element (text_p_);
+ text_p_->set_grob_property ("side-support-elements", get_property ("stavesFound"));
+ typeset_grob (text_p_);
text_p_ =0;
}
}
if (text_p_)
return;
- SCM b = get_property ("basicBarNumberProperties");
+ SCM b = get_property ("BarNumber");
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")));
- }
-
+ Side_position_interface::set_axis (text_p_,Y_AXIS);
- announce_element (Score_element_info (text_p_, 0));
+ announce_grob(text_p_, SCM_EOL);
}
+ENTER_DESCRIPTION(Bar_number_engraver,
+/* descr */ "A bar number is created whenever measurePosition is zero. It is
+put on top of all staves, and appears only at left side of the staff.",
+/* creats*/ "BarNumber",
+/* acks */ "break-aligned-interface",
+/* reads */ "currentBarNumber stavesFound" ,
+/* write */ "");