/*
multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "proto.hh"
-#include "musical-request.hh"
+#include "event.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 "side-position-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "engraver.hh"
+#include "moment.hh"
+#include "spanner.hh"
-IMPLEMENT_IS_TYPE_B1 (Multi_measure_rest_engraver, Engraver);
-ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
+/**
+ 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:
+ Music * rest_ev_;
+ Link_array<Music> text_events_;
+ int start_measure_;
+ Rational last_main_moment_;
+ Moment stop_moment_;
+
+ bool bar_seen_;
+ Item *last_command_item_ ;
+ Spanner *last_rest_;
+ Spanner *mmrest_;
+
+ Link_array<Spanner> numbers_;
+ Link_array<Spanner> last_numbers_;
+};
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;
+ last_command_item_ = 0;
+ bar_seen_ = false;
+ start_measure_ = 0;
+ mmrest_ = 0;
+ last_rest_ =0;
+ rest_ev_ = 0;
}
bool
-Multi_measure_rest_engraver::do_try_request (Request* req_l)
+Multi_measure_rest_engraver::try_music (Music* req)
{
- if (!req_l->access_Musical_req () || !req_l->access_Musical_req ()->access_Multi_measure_rest_req ())
- return false;
-
- if (multi_measure_req_l_)
- if (!multi_measure_req_l_->equal_b (req_l)
- || req_start_mom_ != now_moment ())
- return false;
-
- multi_measure_req_l_ = req_l->access_Musical_req ()->access_Multi_measure_rest_req ();
- req_start_mom_ = now_moment ();
-
- rest_req_stop_mom_ = req_start_mom_ + multi_measure_req_l_->duration_.length ();
-
- return true;
+ if (req->is_mus_type ("multi-measure-rest-event"))
+ {
+ rest_ev_ = req;
+ stop_moment_ = now_mom () + rest_ev_->get_length ();
+
+ return true;
+ }
+ else if (req->is_mus_type ("multi-measure-text-event"))
+ {
+ text_events_.push (req);
+ 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 (rest_ev_ && !mmrest_
+ && stop_moment_ > now_mom ())
{
- 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_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
+
+ Spanner *sp
+ = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm () );
+ numbers_.push (sp);
+
+ if (text_events_.size ())
+ {
+ for (int i = 0; i < text_events_.size (); i++)
+ {
+
+ Music* e = text_events_[i];
+ Spanner *sp
+ = make_spanner ("MultiMeasureRestText", e->self_scm () );
+ SCM t = e->get_property ("text");
+ SCM dir = e->get_property ("direction");
+ sp->set_property ("text",t);
+ if (is_direction (dir))
+ sp->set_property ("direction",dir);
+
+ numbers_.push (sp);
+ }
+
+ /*
+ Stack different scripts.
+ */
+ Direction d = DOWN;
+ do {
+ Grob *last =0;
+ for (int i=0; i <numbers_.size (); i++)
+ {
+ if (scm_int2num (d) == numbers_[i]->get_property ("direction"))
+ {
+ if (last)
+ Side_position_interface::add_support (numbers_[i], last);
+ last = numbers_[i];
+ }
+ }
+ } while (flip (&d) != DOWN);
+ }
+
+ for (int i =0 ; i < numbers_.size (); i++)
+ {
+ Side_position_interface::add_support (numbers_[i], mmrest_);
+ numbers_[i]->set_parent (mmrest_, Y_AXIS);
+ }
+
+ start_measure_
+ = scm_to_int (get_property ("currentBarNumber"));
}
+
+ bar_seen_ = scm_is_string (get_property ("whichBar"));
}
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)
+ /*
+ We can not do this earlier, as breakableSeparationItem is not yet there.
+ */
+
+ if (bar_seen_)
{
- typeset_element (mmrest_p_);
+ Grob *cmc = unsmob_grob (get_property ("breakableSeparationItem"));
+ if (!cmc)
+ cmc = unsmob_grob (get_property ("currentCommandColumn"));
+
+ /*
+ Ugh, this is a kludge - need this for multi-measure-rest-grace.ly
+ */
+ last_command_item_ = dynamic_cast<Item*> (cmc);
}
+
+ if (last_command_item_ && (mmrest_ || last_rest_))
+ {
+
+ if (last_rest_)
+ {
+ add_bound_item (last_rest_, last_command_item_);
+ for (int i = 0; i < last_numbers_.size (); i++)
+ add_bound_item (last_numbers_[i], last_command_item_);
+ }
+
+ if (mmrest_)
+ {
+ add_bound_item (mmrest_, last_command_item_);
+ for (int i = 0; i < numbers_.size (); i++)
+ add_bound_item (numbers_[i], last_command_item_);
+
+ last_command_item_ = 0;
+ }
+ }
+
+
+
+ Moment mp(robust_scm2moment (get_property ("measurePosition"), Moment (0)));
+
+ if (last_rest_)
+ {
+ last_rest_ = 0;
+ last_numbers_.clear ();
+ }
+
+ text_events_.clear ();
}
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 (now_mom ().main_part_ >= stop_moment_.main_part_)
+ {
+ rest_ev_ = 0;
+ }
- if (mmrest_p_ && (!time->whole_in_measure_ || !multi_measure_req_l_))
+ bar_seen_ = false;
+
+ Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
+
+ Moment now = now_mom ();
+ if (mmrest_
+ && now.main_part_ != last_main_moment_
+ && mp.main_part_ == Rational (0))
{
- assert (rest_item_creation_mom_ < now);
- mmrest_p_->measures_i_ = time->bars_i_ - start_measure_i_;
- mmrest_p_ = 0;
+ last_rest_ = mmrest_;
+ last_numbers_ = numbers_;
+
+ int cur = scm_to_int (get_property ("currentBarNumber"));
+ int num = cur - start_measure_;
+
+ /*
+ We can't plug a markup directly into the grob, since the
+ measure-count determines the formatting of the mmrest.
+ */
+ last_rest_->set_property ("measure-count", scm_int2num (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_property ("use-breve-rest", SCM_BOOL_T);
+ }
+
+ mmrest_ = 0;
+ numbers_.clear ();
+
+ Grob * last = last_numbers_.size () ? last_numbers_[0] : 0;
+ if (last && last->get_property ("text") == SCM_EOL)
+ {
+ SCM thres = get_property ("restNumberThreshold");
+ int t = 1;
+ if (scm_is_number (thres))
+ t = scm_to_int (thres);
+
+ if (num <= t)
+ last->suicide ();
+ else
+ {
+ SCM text
+ = scm_number_to_string (scm_int2num (num), scm_from_int (10));
+ last->set_property ("text", text);
+ }
+ }
}
+
+ last_main_moment_ = now.main_part_;
}
+
+void
+Multi_measure_rest_engraver::finalize ()
+{
+}
+
+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 MultiMeasureRestText",
+/* accepts */ "multi-measure-rest-event multi-measure-text-event",
+/* acks */ "",
+/* reads */ "currentBarNumber restNumberThreshold breakableSeparationItem currentCommandColumn measurePosition measureLength",
+/* write */ "");
projects / lilypond.git / blobdiff