/*
- bar-number-grav.cc -- implement Bar_number_engraver
+ bar-number-engraver.cc -- implement Bar_number_engraver
source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 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 "text-item.hh"
+#include "item.hh"
#include "moment.hh"
#include "engraver.hh"
-#include "protected-scm.hh"
+#include "translator-group.hh"
+
+/*
+
+TODO: detect the top staff (stavesFound), and acknowledge staff-group
+system-start-delims. If we find these, and the top staff is in the
+staff-group, add padding to the bar number.
+
+*/
+
class Bar_number_engraver : public Engraver
{
protected:
- Text_item* text_p_;
- Protected_scm visibility_lambda_;
- Protected_scm staffs_;
-
+ Item* text_;
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 );
};
+
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 smp = get_property ("measurePosition");
+
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ if (mp.main_part_ == Rational (0))
+ {
+ SCM bn = get_property ("currentBarNumber");
+ SCM proc = get_property ("barNumberVisibility");
+ if (gh_number_p (bn) && gh_procedure_p (proc)
+ && to_boolean(gh_call1(proc, bn)))
+ {
+ create_items ();
+ // guh.
+ text_->set_grob_property
+ ("text", scm_makfrom0str (to_string (gh_scm2int (bn)).to_str0 ()));
+ }
+ }
}
+
}
-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 ()
+Bar_number_engraver::Bar_number_engraver ()
{
- String t = "barNumberVisibilityFunction";
- SCM proc = get_property (t);
-
- if (gh_procedure_p (proc))
- visibility_lambda_ = proc;
+ text_ =0;
}
-
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 (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"))
+ Grob * s = inf.grob_;
+ if (text_
+ && 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
doesn't it work when you leave this out? */
- text_p_->set_parent (s, X_AXIS);
+ text_->set_parent (s, X_AXIS);
}
}
void
-Bar_number_engraver::do_pre_move_processing ()
+Bar_number_engraver::stop_translation_timestep ()
{
- if (text_p_)
+ if (text_)
{
- text_p_->set_elt_pointer ("side-support", staffs_);
- typeset_element (text_p_);
- text_p_ =0;
+ text_->set_grob_property ("side-support-elements", get_property ("stavesFound"));
+ typeset_grob (text_);
+ text_ =0;
}
}
void
Bar_number_engraver::create_items ()
{
- if (text_p_)
+ if (text_)
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_);
+ text_ = make_item ("BarNumber");
+ Side_position_interface::set_axis (text_,Y_AXIS);
- announce_element (Score_element_info (text_p_, 0));
+ announce_grob(text_, SCM_EOL);
}
+ENTER_DESCRIPTION(Bar_number_engraver,
+/* descr */ "A bar number is created whenever measurePosition is zero. It is\n"
+"put on top of all staves, and appears only at left side of the staff.",
+/* creats*/ "BarNumber",
+/* accepts */ "",
+/* acks */ "break-aligned-interface",
+/* reads */ "currentBarNumber stavesFound barNumberVisibility" ,
+/* write */ "");
projects / lilypond.git / blobdiff