-/*
- repeat-engraver.cc -- implement Repeat_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "engraver.hh"
-#include "cons.hh"
-#include "bar.hh"
-#include "bar-engraver.hh"
-#include "musical-request.hh"
-#include "multi-measure-rest.hh"
-#include "command-request.hh"
-#include "timing-translator.hh"
-#include "engraver-group-engraver.hh"
-#include "repeated-music.hh"
-#include "timing-translator.hh"
-#include "volta-spanner.hh"
-#include "note-column.hh"
-#include "paper-def.hh"
-#include "music-list.hh"
-#include "side-position-interface.hh"
-#include "spanner.hh"
-#include "note-column.hh"
-
-struct Bar_create_event
-{
- Moment when_;
- bool bar_b_;
- bool last_b_;
- String type_;
- Bar_create_event();
- Bar_create_event (Moment w, String s);
- Bar_create_event (Moment w, int i, int j);
-};
-
-int compare (Bar_create_event const & c1, Bar_create_event const &c2)
-{
- return (c1.when_ - c2.when_).sign();
-}
-
-/**
- Generate repeat-bars |: :| for repeated-music
- */
-class Repeat_engraver : public Engraver
-{
-public:
- VIRTUAL_COPY_CONS(Translator);
- Repeat_engraver ();
-protected:
- virtual void acknowledge_element (Score_element_info i);
- virtual void do_removal_processing ();
- virtual bool do_try_music (Music *req_l);
- virtual void do_process_music();
- virtual void do_pre_move_processing();
- virtual void do_post_move_processing ();
- void queue_events ();
-
-private:
- Repeated_music *repeated_music_l_;
- bool done_this_one_b_;
-
- /*
- Royal_brackla_create_queue is only two Whiskies away. :-)
- */
- Cons<Bar_create_event> *create_barmoments_queue_;
-
- Spanner * volta_span_p_;
- Spanner* end_volta_span_p_;
-};
-
-
-
-
-ADD_THIS_TRANSLATOR (Repeat_engraver);
-
-bool
-Repeat_engraver::do_try_music (Music* m)
-{
- if (Repeated_music* r = dynamic_cast<Repeated_music *> (m))
- {
- if (repeated_music_l_)
- return false;
-
- if (r->volta_fold_b_)
- {
- repeated_music_l_ = r;
- }
-
- /*
- We acknowledge other types of unfolded music as well, to
- get auto context selection right.
- */
- if (r->type_ == "volta" || r->type_ == "unfolded")
- return true;
-
- }
- return false;
-}
-
-/**
- Walk through repeat music, and generate events for appropriate times.
-
- UGH. Should use Music_iteration for this.
-
- Should also queue some event to get timing information reset during
- 2nd and following voltas.
-*/
-void
-Repeat_engraver::queue_events ()
-{
- Music_sequence* alt = repeated_music_l_->alternatives ();
- Moment walk_mom = now_mom () + repeated_music_l_->body ()->length_mom ();
-
- SCM novolta = get_property ("noVoltaBraces");
- bool create_volta = !to_boolean (novolta);
-
- Cons_list<Bar_create_event> becel;
- becel.append (new Bar_create_event (now_mom (), "|:"));
-
- if (!alt)
- {
- becel.append (new Bar_create_event (walk_mom, ":|"));
- becel.append (new Bar_create_event (walk_mom, "stop"));
- }
- else
- {
- int last_number = 0;
- int volta_number = repeated_music_l_->repeats_i_ - alt->length_i () + 1;
-
- /*
- all repeat alternatives, and generate events with
- appropriate timestamps. The volta spanner event (a number string)
- happens at the begin of the alt. The :| bar event at the ending.
- */
-
- for (SCM s = repeated_music_l_->alternatives ()->music_list ();
- gh_pair_p (s); s = gh_cdr (s))
- {
- Music *mus =unsmob_music (gh_car (s));
-
- /*
- some idiot might typeset a repeat not starting on a
- barline. Make sure there is one.
-
- (todo: should try to avoid line breaks?)
- */
- if (last_number == 0)
- {
- becel.append (new Bar_create_event (walk_mom, ""));
- }
-
-
- if (create_volta)
- {
- Bar_create_event * c = new Bar_create_event (walk_mom, last_number+ 1,
- volta_number);
-
- if (!gh_pair_p (gh_cdr (s)))
- c->last_b_ = true;
-
- becel.append (c);
- last_number = volta_number;
- volta_number ++;
- SCM l (get_property ("voltaSpannerDuration"));
- if (unsmob_moment(l))
- {
- Moment vSD_mom = *unsmob_moment (l);
- if ( vSD_mom < mus->length_mom() ) // terminate volta early ?
- {
- vSD_mom += walk_mom;
- c->last_b_ = true;
- becel.append (new Bar_create_event (vSD_mom, "stop"));
- }
- }
- }
- walk_mom += mus->length_mom();
-
- if (gh_pair_p (gh_cdr (s)))
- becel.append (new Bar_create_event (walk_mom, ":|"));
- else
- becel.append (new Bar_create_event (walk_mom, "stop"));
- }
- }
-
- /*
- ugh, should merge :| and |: here.
- */
- Cons<Bar_create_event> * last = last_cons (create_barmoments_queue_);
- Cons<Bar_create_event> **tail = last? & last->next_
- : & create_barmoments_queue_;
-
- *tail = becel.head_ ;
-
- becel.head_ = 0;
-}
-
-void
-Repeat_engraver::do_process_music ()
-{
- if (repeated_music_l_ && !done_this_one_b_)
- {
- queue_events ();
- done_this_one_b_ = true;
- }
-
-
- Cons<Bar_create_event> * head = create_barmoments_queue_;
- if (!head)
- return;
-
- /*
- Do all the events that need to be done now.
- */
- while (head && now_mom () == head->car_->when_)
- {
- create_barmoments_queue_ = create_barmoments_queue_->next_;
- head->next_ =0;
- String t = head->car_->type_;
- if (head->car_->bar_b_)
- {
- if (t == "stop" || t == ":|")
- {
- end_volta_span_p_ = volta_span_p_;
- volta_span_p_ =0;
- }
-
- SCM whsym = ly_symbol2scm ("whichBar");
- Translator_group* where = daddy_trans_l_->where_defined (whsym);
- SCM which = where->get_property (whsym);
-
- /*
- Should use symbols for bar glyphs.
- */
- if (t == "stop" && which == SCM_UNDEFINED)
- which = ly_str02scm ("");
- else if (t != "stop")
- {
- SCM l = ly_str02scm (":|");
- SCM r = ly_str02scm ("|:");
-
- if ( (t == "|:" && scm_equal_p (which, l) == SCM_BOOL_T)
- || (t == ":|" && scm_equal_p (which, r)== SCM_BOOL_T))
- t = ":|:";
-
- if (t != "" || !gh_string_p (which))
- which = ly_str02scm (t.ch_C());
- }
- where->set_property (whsym, which);
- }
- else
- {
- assert (!volta_span_p_);
- volta_span_p_ = new Spanner (get_property ("basicVoltaSpannerProperties"));
- Volta_spanner::set_interface (volta_span_p_);
- announce_element (volta_span_p_,0);
- volta_span_p_->set_elt_property ("text",
- ly_str02scm (t.ch_C()));
- volta_span_p_->set_elt_property ("last-volta",
- gh_bool2scm (head->car_->last_b_));
- // voltaSpannerDuration stuff here.
- // other property stuff here.
- }
-
-
- delete head->car_;
- delete head;
-
- head = create_barmoments_queue_;
- }
-
- assert (!head || head->car_->when_ > now_mom ());
-}
-
-
-void
-Repeat_engraver::acknowledge_element (Score_element_info i)
-{
- if (Item* item = dynamic_cast<Item*> (i.elem_l_))
- {
- if (Note_column::has_interface (item))
- {
- if (volta_span_p_)
- Volta_spanner::add_column (volta_span_p_,item);
- if (end_volta_span_p_)
- Volta_spanner::add_column (end_volta_span_p_,item);
- }
- if (Bar::has_interface (item))
- {
- if (volta_span_p_)
- Volta_spanner::add_bar (volta_span_p_, item);
- if (end_volta_span_p_)
- Volta_spanner::add_bar(end_volta_span_p_ , item);
- }
- }
-}
-
-void
-Repeat_engraver::do_removal_processing ()
-{
- if (volta_span_p_)
- {
- typeset_element(volta_span_p_);
- }
- if (end_volta_span_p_)
- {
- typeset_element (end_volta_span_p_);
- }
- // todo: the paranoid may also delete create_barmoments_queue_
-}
-
-void
-Repeat_engraver::do_post_move_processing ()
-{
- for (Cons<Bar_create_event> *p = create_barmoments_queue_;
- p && p->car_->when_ == now_mom (); p = p->next_)
- if (p->car_->type_ == "stop")
- {
- repeated_music_l_ = 0;
- done_this_one_b_ = false;
- }
-}
-
-void
-Repeat_engraver::do_pre_move_processing ()
-{
- if (end_volta_span_p_)
- {
- Side_position::add_staff_support (end_volta_span_p_);
-
- typeset_element (end_volta_span_p_ );
- end_volta_span_p_ =0;
- }
-
-}
-
-
-Repeat_engraver::Repeat_engraver()
-{
- repeated_music_l_ =0;
- end_volta_span_p_ =0;
- volta_span_p_ =0;
- done_this_one_b_ = false;
- create_barmoments_queue_ =0;
-}
-
-/* ************** */
-Bar_create_event::Bar_create_event()
-{
- last_b_ =false;
- bar_b_ = true;
-}
-
-Bar_create_event::Bar_create_event (Moment w, String s)
-{
- last_b_ =false;
- when_ = w;
- type_ = s;
- bar_b_ = true;
-}
-
-Bar_create_event::Bar_create_event (Moment w, int i, int j)
-{
- last_b_ =false;
- when_ = w ;
- bar_b_ = false;
-
- if (i!=j)
- type_ = to_str (i) + ".-" ;
-
- type_ += to_str(j) + ".";
-}
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