/*
multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
- (c) 1998--2001 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2003 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "musical-request.hh"
+#include "event.hh"
#include "multi-measure-rest.hh"
#include "paper-column.hh"
#include "engraver-group-engraver.hh"
-#include "bar.hh"
+#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
#include "engraver.hh"
#include "moment.hh"
/**
The name says it all: make multi measure rests
-FIXME? The MM rest engraver must be able to see bar lines, so it won't
-work at Voice level. Not a problem in practice, but aesthetically pleasing?
-
*/
class Multi_measure_rest_engraver : public Engraver
{
public:
- VIRTUAL_COPY_CONS(Translator);
- Multi_measure_rest_engraver ();
+ TRANSLATOR_DECLARATIONS(Multi_measure_rest_engraver);
protected:
- virtual void acknowledge_grob (Grob_info i);
virtual bool try_music (Music*);
virtual void process_music ();
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
virtual void finalize ();
- virtual void create_grobs ();
private:
- Span_req * new_req_l_;
- Span_req * busy_span_req_l_;
- Span_req * stop_req_l_;
- int start_measure_i_;
+ Music * new_req_;
+ Music * busy_span_req_;
+ Music * stop_req_;
+ int start_measure_;
Moment start_moment_;
- Spanner *mmrest_p_;
- Spanner *lastrest_p_;
-};
-ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
+ Spanner *mmrest_;
+ Spanner *number_;
-Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
-{
- start_measure_i_ = 0;
- mmrest_p_ = lastrest_p_ =0;
- new_req_l_ = busy_span_req_l_ = stop_req_l_ =0;
-}
+ Spanner *last_number_;
+ Spanner *last_rest_;
+};
-void
-Multi_measure_rest_engraver::acknowledge_grob (Grob_info i)
+Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
{
- Item * item = dynamic_cast<Item*> (i.elem_l_);
- if (item && Bar::has_interface (item))
- {
- if (mmrest_p_)
- Multi_measure_rest::add_column (mmrest_p_,item);
- if (lastrest_p_)
- Multi_measure_rest::add_column (lastrest_p_,item);
- }
+ start_measure_ = 0;
+ mmrest_ = 0;
+ last_rest_ =0;
+ number_ = 0;
+ new_req_ = busy_span_req_ = stop_req_ =0;
}
bool
-Multi_measure_rest_engraver::try_music (Music* req_l)
+Multi_measure_rest_engraver::try_music (Music* req)
{
- if (Span_req * sp = dynamic_cast<Span_req*> (req_l))
+ if (req->is_mus_type ("multi-measure-rest-event"))
{
-
- if (scm_equal_p (sp->get_mus_property ("span-type"),
- ly_str02scm ("rest")) == SCM_BOOL_T)
+ Direction d = to_dir (req->get_mus_property ("span-direction"));
+ if (d == STOP)
{
- if (sp->get_span_dir() == STOP)
- {
- stop_req_l_ = sp;
- }
- else if (sp->get_span_dir() == START && !new_req_l_)
- {
- new_req_l_ = sp;
- }
- return true;
+ stop_req_ = req;
}
+ else if (d == START&& !new_req_)
+ {
+ new_req_ = req;
+ }
+ return true;
}
return false;
}
void
Multi_measure_rest_engraver::process_music ()
{
- if (new_req_l_ && stop_req_l_)
- stop_req_l_ = 0;
+ if (new_req_ && stop_req_)
+ stop_req_ = 0;
- if (new_req_l_)
+ if (new_req_)
start_moment_ = now_mom ();
- if (stop_req_l_)
+ if (stop_req_)
{
- busy_span_req_l_ =0;
- stop_req_l_ = 0;
+ busy_span_req_ =0;
+ stop_req_ = 0;
}
- if (new_req_l_)
+ if (new_req_)
{
- busy_span_req_l_ = new_req_l_;
- new_req_l_ =0;
+ busy_span_req_ = new_req_;
+ new_req_ =0;
}
-}
-
-void
-Multi_measure_rest_engraver::create_grobs ()
-{
-
- if (busy_span_req_l_ && !mmrest_p_)
+ if (busy_span_req_ && !mmrest_)
{
- mmrest_p_ = new Spanner (get_property ("MultiMeasureRest"));
+ mmrest_ = new Spanner (get_property ("MultiMeasureRest"));
+ number_ = new Spanner (get_property ("MultiMeasureRestNumber"));
- Multi_measure_rest::set_interface (mmrest_p_);
- Staff_symbol_referencer::set_interface (mmrest_p_);
+ Side_position_interface::add_support (number_, mmrest_);
+ number_->set_parent (mmrest_, Y_AXIS);
- announce_grob (mmrest_p_, busy_span_req_l_);
- start_measure_i_
+ announce_grob (mmrest_, busy_span_req_->self_scm());
+ announce_grob (number_, busy_span_req_->self_scm());
+ start_measure_
= gh_scm2int (get_property ("currentBarNumber"));
}
+
+ if (gh_string_p (get_property ("whichBar")))
+ {
+ Grob *cmc = unsmob_grob (get_property( "currentCommandColumn"));
+ Item *it = dynamic_cast<Item*> (cmc);
+ if (mmrest_)
+ {
+ add_bound_item (mmrest_, it);
+ add_bound_item (number_, it);
+ }
+ if (last_rest_)
+ {
+ add_bound_item (last_rest_,it);
+ add_bound_item (last_number_, it);
+ }
+ }
}
void
Multi_measure_rest_engraver::stop_translation_timestep ()
{
SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
- if (mmrest_p_ && (now_mom () >= start_moment_)
- && !mp
- && (scm_ilength (mmrest_p_->get_grob_property ("columns")) >= 2))
+ if (mmrest_ && (now_mom () >= start_moment_)
+ && !mp.to_bool ()
+ && mmrest_->get_bound (LEFT) && mmrest_->get_bound (RIGHT))
{
- typeset_grob (mmrest_p_);
+ typeset_grob (mmrest_);
+ typeset_grob (number_);
+ Side_position_interface::add_staff_support (number_);
/*
- we must keep mmrest_p_ around to set measure-count.
+ we must keep mmrest_ around to set measure-count, so
+ no mmrest_ = 0 here.
*/
+
+
}
- if (lastrest_p_)
+
+ if (last_rest_)
{
- typeset_grob (lastrest_p_);
- lastrest_p_ = 0;
+ /* sanity check */
+ if (last_rest_->get_bound (LEFT) && last_rest_->get_bound (RIGHT)
+ && last_rest_->get_bound (LEFT) != last_rest_->get_bound (RIGHT))
+ {
+ typeset_grob (last_rest_);
+ typeset_grob (last_number_);
+ }
+ last_rest_ = 0;
+ last_number_ = 0;
}
- if (new_req_l_)
+ if (new_req_)
{
- busy_span_req_l_ = new_req_l_;
- new_req_l_ =0;
+ busy_span_req_ = new_req_;
+ new_req_ =0;
}
}
Multi_measure_rest_engraver::start_translation_timestep ()
{
SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
- if (mmrest_p_ && !mp)
+ if (mmrest_ && !mp.to_bool ())
{
- lastrest_p_ = mmrest_p_;
+ last_rest_ = mmrest_;
+ last_number_ = number_;
+
int cur = gh_scm2int (get_property ("currentBarNumber"));
- lastrest_p_->set_grob_property ("measure-count",
- gh_int2scm (cur - start_measure_i_));
- mmrest_p_ = 0;
+ int num = cur - start_measure_;
+ last_rest_->set_grob_property ("measure-count", gh_int2scm (num));
+
+ SCM sml = get_property ("measureLength");
+ Rational ml = (unsmob_moment (sml)) ? unsmob_moment (sml)->main_part_ : Rational (1);
+ if (ml >= Rational (2))
+ {
+ last_rest_->set_grob_property ("use-breve-rest", SCM_BOOL_T);
+ }
+
+ mmrest_ = 0;
+
+ SCM text =last_number_->get_grob_property ("text");
+ SCM thres = get_property ("restNumberThreshold");
+ int t = 1;
+ if (gh_number_p (thres))
+ t = gh_scm2int (thres);
+
+ if (text == SCM_EOL && num <= t)
+ last_number_->suicide();
+ else if (text == SCM_EOL)
+ {
+ text = scm_number_to_string (gh_int2scm (num), SCM_MAKINUM (10));
+ last_number_->set_grob_property ("text", text);
+ }
}
}
void
Multi_measure_rest_engraver::finalize ()
{
- if (mmrest_p_)
- typeset_grob (mmrest_p_);
- if (lastrest_p_)
- typeset_grob (lastrest_p_);
+ if (mmrest_)
+ {
+ typeset_grob (mmrest_);
+ typeset_grob (number_);
+ }
+ if (last_rest_)
+ {
+ typeset_grob (last_rest_);
+ typeset_grob (last_number_);
+ }
}
+
+ENTER_DESCRIPTION(Multi_measure_rest_engraver,
+/* descr */
+ "Engraves multi-measure rests that are produced with @code{R}. Reads "
+"measurePosition and currentBarNumber to determine what number to print "
+"over the MultiMeasureRest. Reads measureLength to determine if it "
+"should use a whole rest or a breve rest to represent 1 measure "
+ ,
+/* creats*/ "MultiMeasureRest MultiMeasureRestNumber",
+/* accepts */ "multi-measure-rest-event",
+/* acks */ "",
+/* reads */ "currentBarNumber restNumberThreshold currentCommandColumn measurePosition measureLength",
+/* write */ "");
projects / lilypond.git / blobdiff