/*
multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
- (c) 1998 Jan Nieuwenhuizen <jan@digicash.com>
+ (c) 1998--2003 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 "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 * new_req_;
+ Music * busy_span_req_;
+ Music * stop_req_;
+ Link_array<Music> text_events_;
+ int start_measure_;
+ Moment start_moment_;
+ Rational last_main_moment_;
+
+ Spanner *mmrest_;
+ Link_array<Spanner> numbers_;
+
+ Link_array<Spanner> last_numbers_;
+ Spanner *last_rest_;
+};
Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
{
- last_mom_ = 0;
- multi_measure_req_l_ = 0;
- mmrest_p_ = 0;
+ start_measure_ = 0;
+ mmrest_ = 0;
+ last_rest_ =0;
+ new_req_ = busy_span_req_ = stop_req_ =0;
}
bool
-Multi_measure_rest_engraver::do_try_request (Request* req_l)
+Multi_measure_rest_engraver::try_music (Music* req)
{
- if (!req_l->musical () || !req_l->musical ()->multi_measure ())
- return false;
-
- multi_measure_req_l_ = req_l->musical ()->multi_measure ();
- last_mom_ = now_moment () + multi_measure_req_l_->duration_.length ();
-
- return true;
+ if (req->is_mus_type ("multi-measure-rest-event"))
+ {
+ Direction d = to_dir (req->get_mus_property ("span-direction"));
+ if (d == STOP)
+ {
+ stop_req_ = req;
+ }
+ else if (d == START&& !new_req_)
+ {
+ new_req_ = req;
+ }
+ 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_removal_processing ()
+Multi_measure_rest_engraver::process_music ()
{
- if (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_)
+ {
+ mmrest_ = new Spanner (get_property ("MultiMeasureRest"));
+
+ if (text_events_.size())
+ {
+ for (int i = 0; i < text_events_.size(); i++)
+ {
+ Spanner *sp
+ = new Spanner (get_property ("MultiMeasureRestText"));
+
+ Music* e = text_events_[i];
+ SCM t = e->get_mus_property ("text");
+ SCM dir = e->get_mus_property ("direction");
+ sp->set_grob_property ("text",t);
+ if (is_direction (dir))
+ sp->set_grob_property ("direction",dir);
+
+ numbers_.push (sp);
+ announce_grob (sp, e->self_scm());
+ }
+
+ /*
+ Stack different scripts.
+ */
+ Direction d = DOWN;
+ do {
+ Grob *last =0;
+ for (int i=0; i <numbers_.size(); i++)
+ {
+ if (gh_int2scm (d) == numbers_[i]->get_grob_property ("direction"))
+ {
+ if (last)
+ Side_position_interface::add_support (numbers_[i], last);
+ last = numbers_[i];
+ }
+ }
+ } while (flip (&d) != DOWN);
+ }
+ else
+ {
+ Spanner *sp
+ = new Spanner (get_property ("MultiMeasureRestNumber"));
+ numbers_.push (sp);
+ announce_grob (sp, busy_span_req_->self_scm());
+ }
+
+ for (int i =0 ; i < numbers_.size(); i++)
+ {
+ Side_position_interface::add_support (numbers_[i], mmrest_);
+ numbers_[i]->set_parent (mmrest_, Y_AXIS);
+ }
+
+ announce_grob (mmrest_, busy_span_req_->self_scm());
+ start_measure_
+ = gh_scm2int (get_property ("currentBarNumber"));
+ }
+
+ if (gh_string_p (get_property ("whichBar")))
{
- typeset_element (mmrest_p_);
- mmrest_p_ = 0;
+ Grob *cmc = unsmob_grob (get_property( "currentCommandColumn"));
+ Item *it = dynamic_cast<Item*> (cmc);
+ if (mmrest_)
+ {
+ add_bound_item (mmrest_, it);
+ for (int i = 0; i < numbers_.size(); i++)
+ add_bound_item (numbers_[i], it);
+ }
+
+ if (last_rest_)
+ {
+ add_bound_item (last_rest_,it);
+ for (int i = 0; i < last_numbers_.size(); i++)
+ add_bound_item (last_numbers_[i], it);
+ }
}
}
void
-Multi_measure_rest_engraver::do_process_requests ()
+Multi_measure_rest_engraver::stop_translation_timestep ()
{
- if (mmrest_p_ || !multi_measure_req_l_)
- return;
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
- mmrest_p_ = new Multi_measure_rest;
+ if (mmrest_ && (now_mom () >= start_moment_)
+ && !mp.to_bool ()
+ && mmrest_->get_bound (LEFT) && mmrest_->get_bound (RIGHT))
+ {
+ typeset_grob (mmrest_);
+ for (int i = 0 ; i < numbers_.size(); i++)
+ {
+ typeset_grob (numbers_[i]);
+ Side_position_interface::add_staff_support (numbers_[i]);
+ }
+
+ /*
+ we must keep mmrest_ around to set measure-count, so
+ no mmrest_ = 0 here.
+ */
+ }
- Scalar prop = get_property ("part");
- if (prop.isnum_b ())
- part_b_ = prop.to_bool ();
+ if (last_rest_)
+ {
+ /* 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_);
-// if (!part_b_)
-// return;
+ for (int i = 0; i < last_numbers_.size ();i++)
+ {
+ typeset_grob (last_numbers_[i]);
+ Side_position_interface::add_staff_support (last_numbers_[i]);
+ }
+ }
+ last_rest_ = 0;
+ last_numbers_.clear();
+ }
- int measures_i = (int)multi_measure_req_l_->duration_.plet_.iso_i_;
- if (part_b_)
- mmrest_p_->measures_i_ = measures_i;
+ if (new_req_)
+ {
+ busy_span_req_ = new_req_;
+ new_req_ =0;
+ }
- announce_element (Score_elem_info (mmrest_p_, multi_measure_req_l_));
+ text_events_.clear ();
+}
- multi_measure_req_l_ = 0;
+void
+Multi_measure_rest_engraver::start_translation_timestep ()
+{
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+
+ Moment now =now_mom ();
+ if (mmrest_
+ && now.main_part_ != last_main_moment_
+ && mp.main_part_ == Rational (0))
+ {
+ last_rest_ = mmrest_;
+ last_numbers_ = numbers_;
+
+ int cur = gh_scm2int (get_property ("currentBarNumber"));
+ 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;
+ numbers_.clear ();
+
+ Grob * last = last_numbers_.size() ? last_numbers_[0] : 0;
+ if (last && last->get_grob_property ("text") == SCM_EOL)
+ {
+ SCM thres = get_property ("restNumberThreshold");
+ int t = 1;
+ if (gh_number_p (thres))
+ t = gh_scm2int (thres);
+
+ if (num <= t)
+ last->suicide();
+ else
+ {
+ SCM text
+ = scm_number_to_string (gh_int2scm (num), SCM_MAKINUM (10));
+ last->set_grob_property ("text", text);
+ }
+ }
+ }
+
+ last_main_moment_ = now.main_part_;
}
void
-Multi_measure_rest_engraver::do_pre_move_processing ()
+Multi_measure_rest_engraver::finalize ()
{
- if (!mmrest_p_)
- return;
+ if (mmrest_)
+ {
+ typeset_grob (mmrest_);
+ }
+ if (last_rest_)
+ {
+ typeset_grob (last_rest_);
+ }
- typeset_element (mmrest_p_);
- mmrest_p_ = 0;
+ for (int i = 0; i < last_numbers_.size ();i++)
+ typeset_grob (last_numbers_[i]);
- if (part_b_)
- return;
+ for (int i = 0; i < numbers_.size ();i++)
+ typeset_grob (numbers_[i]);
- if (last_mom_ <= now_moment ())
- multi_measure_req_l_ = 0;
}
+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 currentCommandColumn measurePosition measureLength",
+/* write */ "");
projects / lilypond.git / blobdiff