/*
multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "proto.hh"
#include "musical-request.hh"
#include "multi-measure-rest.hh"
-#include "multi-measure-rest-engraver.hh"
-#include "score-column.hh"
-#include "time-description.hh"
+#include "paper-column.hh"
+#include "engraver-group-engraver.hh"
+
+#include "staff-symbol-referencer.hh"
+#include "engraver.hh"
+#include "moment.hh"
+#include "spanner.hh"
+
+/**
+ The name says it all: make multi measure rests
+
+*/
+class Multi_measure_rest_engraver : public Engraver
+{
+public:
+ TRANSLATOR_DECLARATIONS(Multi_measure_rest_engraver);
+
+protected:
+ virtual bool try_music (Music*);
+ virtual void process_music ();
+ virtual void stop_translation_timestep ();
+ virtual void start_translation_timestep ();
+ virtual void finalize ();
+
+private:
+ Span_req * new_req_;
+ Span_req * busy_span_req_;
+ Span_req * stop_req_;
+ int start_measure_;
+ Moment start_moment_;
+
+ Spanner *mmrest_;
+ Spanner *lastrest_;
+};
-ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
{
- start_measure_i_ = 0;
- rest_item_creation_mom_ = rest_req_stop_mom_ =0;
- multi_measure_req_l_ = 0;
- mmrest_p_ = 0;
+ start_measure_ = 0;
+ mmrest_ = lastrest_ =0;
+ new_req_ = busy_span_req_ = stop_req_ =0;
}
+
bool
-Multi_measure_rest_engraver::do_try_music (Music* req_l)
+Multi_measure_rest_engraver::try_music (Music* req)
{
- if (Multi_measure_rest_req *mr = dynamic_cast<Multi_measure_rest_req *> (req_l))
- {
- if (multi_measure_req_l_)
- if (!multi_measure_req_l_->equal_b (mr)
- || req_start_mom_ != now_moment ())
- return false;
-
- multi_measure_req_l_ = mr;
- req_start_mom_ = now_moment ();
-
- rest_req_stop_mom_ = req_start_mom_ + multi_measure_req_l_->duration_.length ();
- return true;
- }
- return false;
+ if (Span_req * sp = dynamic_cast<Span_req*> (req))
+ {
+
+ if (scm_equal_p (sp->get_mus_property ("span-type"),
+ ly_str02scm ("rest")) == SCM_BOOL_T)
+ {
+ if (sp->get_span_dir () == STOP)
+ {
+ stop_req_ = sp;
+ }
+ else if (sp->get_span_dir () == START && !new_req_)
+ {
+ new_req_ = sp;
+ }
+ return true;
+ }
+ }
+ return false;
}
void
-Multi_measure_rest_engraver::do_process_requests ()
+Multi_measure_rest_engraver::process_music ()
{
- if (multi_measure_req_l_ && !mmrest_p_)
+ if (new_req_ && stop_req_)
+ stop_req_ = 0;
+
+ if (new_req_)
+ start_moment_ = now_mom ();
+
+ if (stop_req_)
+ {
+ busy_span_req_ =0;
+ stop_req_ = 0;
+ }
+
+ if (new_req_)
+ {
+ busy_span_req_ = new_req_;
+ new_req_ =0;
+ }
+
+ if (busy_span_req_ && !mmrest_)
{
- Time_description const *time = get_staff_info().time_C_;
- mmrest_p_ = new Multi_measure_rest;
- rest_item_creation_mom_ = time->when_mom ();
- announce_element (Score_element_info (mmrest_p_, multi_measure_req_l_));
- start_measure_i_ = time->bars_i_;
+ mmrest_ = new Spanner (get_property ("MultiMeasureRest"));
+
+ announce_grob(mmrest_, 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);
+ if (lastrest_)
+ add_bound_item (lastrest_,it);
}
}
void
-Multi_measure_rest_engraver::do_pre_move_processing ()
+Multi_measure_rest_engraver::stop_translation_timestep ()
{
- Moment now (now_moment ());
- if (mmrest_p_ && rest_item_creation_mom_ == now)
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+
+ if (mmrest_ && (now_mom () >= start_moment_)
+ && !mp.to_bool ()
+ && mmrest_->get_bound (LEFT) && mmrest_->get_bound (RIGHT))
+ {
+ typeset_grob (mmrest_);
+ /*
+ we must keep mmrest_ around to set measure-count, so
+ no mmrest_ = 0 here.
+ */
+ }
+
+ if (lastrest_)
+ {
+ /* sanity check */
+ if (lastrest_->get_bound (LEFT) && lastrest_->get_bound (RIGHT)
+ && lastrest_->get_bound (LEFT) != lastrest_->get_bound (RIGHT))
+ typeset_grob (lastrest_);
+ lastrest_ = 0;
+ }
+
+ if (new_req_)
{
- typeset_element (mmrest_p_);
+ busy_span_req_ = new_req_;
+ new_req_ =0;
}
+
}
void
-Multi_measure_rest_engraver::do_post_move_processing ()
+Multi_measure_rest_engraver::start_translation_timestep ()
{
- Time_description const *time = get_staff_info().time_C_;
- Moment now (now_moment ());
- if (rest_req_stop_mom_ <= now)
- multi_measure_req_l_ = 0;
-
- if (mmrest_p_ && (!time->whole_in_measure_ || !multi_measure_req_l_))
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+
+ if (mmrest_ && !mp.to_bool ())
{
- assert (rest_item_creation_mom_ < now);
- mmrest_p_->measures_i_ = time->bars_i_ - start_measure_i_;
- mmrest_p_ = 0;
+ lastrest_ = mmrest_;
+ int cur = gh_scm2int (get_property ("currentBarNumber"));
+ lastrest_->set_grob_property ("measure-count",
+ gh_int2scm (cur - start_measure_));
+ mmrest_ = 0;
}
}
+
+
+void
+Multi_measure_rest_engraver::finalize ()
+{
+ if (mmrest_)
+ typeset_grob (mmrest_);
+ if (lastrest_)
+ typeset_grob (lastrest_);
+}
+
+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
+",
+/* creats*/ "MultiMeasureRest",
+/* acks */ "",
+/* reads */ "currentBarNumber currentCommandColumn measurePosition",
+/* write */ "");
projects / lilypond.git / blobdiff