2 lyric-combine-music-iterator.cc -- implement Lyric_combine_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "translator-group.hh"
11 #include "lyric-combine-music-iterator.hh"
12 #include "lyric-combine-music.hh"
13 #include "musical-request.hh"
14 #include "note-head.hh"
21 Busy_playing_req *busy_req;
22 Melisma_req *melisma_start_req;
23 Melisma_req *melisma_stop_req;
24 Melisma_playing_req * melisma_playing_req;
26 Lyric_combine_music_iterator::Lyric_combine_music_iterator ()
30 busy_req = new Busy_playing_req;
31 melisma_playing_req = new Melisma_playing_req;
32 melisma_stop_req = new Melisma_req;
33 melisma_start_req = new Melisma_req;
34 melisma_start_req->set_span_dir (START);
35 melisma_stop_req->set_span_dir (STOP);
43 Lyric_combine_music_iterator::pending_moment () const
45 Moment musnext = music_iter_->pending_moment ();
50 Lyric_combine_music_iterator::ok () const
52 return music_iter_->ok ();
56 Lyric_combine_music_iterator::derived_mark()const
59 scm_gc_mark (music_iter_->self_scm());
61 scm_gc_mark (lyric_iter_->self_scm());
65 Lyric_combine_music_iterator::construct_children ()
67 Lyric_combine_music const * m = dynamic_cast<Lyric_combine_music const*> (get_music ());
69 music_iter_ = unsmob_iterator (get_iterator (m->get_music ()));
70 lyric_iter_ = unsmob_iterator (get_iterator (m->get_lyrics ()));
74 Lyric_combine_music_iterator::get_busy_status () const
77 We have to use both the request and the busyGrobs queue. The
78 busyGrobs queue doesn't contain any notes that have started this
80 if (try_music (busy_req))
83 Translator_group * tr = music_iter_->report_to ();
85 SCM grobs = tr->get_property ("busyGrobs");
86 Moment now = tr->now_mom();
87 for (; gh_pair_p (grobs); grobs = gh_cdr (grobs))
89 SCM grob = gh_cdar (grobs);
90 Moment end =*unsmob_moment (gh_caar (grobs));
94 This is slightly ugh: we are now confunding the frontend
95 (iterators) and the backend (note heads) */
97 && Note_head::has_interface (unsmob_grob (grob)))
105 Lyric_combine_music_iterator::process (Moment m)
107 Moment my_next = music_iter_->pending_moment ();
111 music_iter_->process (m);
113 if (get_busy_status ())
115 bool melisma_b = try_music (melisma_playing_req);
118 if (lyric_iter_->ok ())
120 Moment m= lyric_iter_->pending_moment ();
121 lyric_iter_->process (m);
128 Lyric_combine_music_iterator::do_quit ()
136 Lyric_combine_music_iterator::Lyric_combine_music_iterator (Lyric_combine_music_iterator const & src)
137 : Music_iterator (src)
139 lyric_iter_ = src.lyric_iter_ ? src.lyric_iter_->clone () : 0;
140 music_iter_ = src.music_iter_ ? src.music_iter_->clone () : 0;
143 scm_gc_unprotect_object (lyric_iter_->self_scm());
145 scm_gc_unprotect_object (music_iter_->self_scm());
149 Lyric_combine_music_iterator::try_music_in_children (Music *m) const
151 Music_iterator * i = music_iter_->try_music (m);
155 return lyric_iter_->try_music (m);
159 IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);