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"
14 #include "note-head.hh"
22 Music *melisma_start_req;
23 Music *melisma_stop_req;
24 Music *melisma_playing_req;
26 Lyric_combine_music_iterator::Lyric_combine_music_iterator ()
31 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
33 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
35 = make_music_by_name (ly_symbol2scm ("MelismaEvent"));
37 = make_music_by_name (ly_symbol2scm ("MelismaEvent"));
39 melisma_start_req->set_mus_property ("span-direction", gh_int2scm (START));
40 melisma_stop_req->set_mus_property ("span-direction", gh_int2scm (STOP));
48 Lyric_combine_music_iterator::pending_moment () const
50 Moment musnext = music_iter_->pending_moment ();
55 Lyric_combine_music_iterator::ok () const
57 return music_iter_->ok ();
61 Lyric_combine_music_iterator::derived_mark()const
64 scm_gc_mark (music_iter_->self_scm());
66 scm_gc_mark (lyric_iter_->self_scm());
70 Lyric_combine_music_iterator::construct_children ()
72 Lyric_combine_music const * m = dynamic_cast<Lyric_combine_music const*> (get_music ());
74 music_iter_ = unsmob_iterator (get_iterator (m->get_music ()));
75 lyric_iter_ = unsmob_iterator (get_iterator (m->get_lyrics ()));
79 Lyric_combine_music_iterator::get_busy_status () const
82 We have to use both the event and the busyGrobs queue. The
83 busyGrobs queue doesn't contain any notes that have started this
85 if (try_music (busy_req))
88 Translator_group * tr = music_iter_->report_to ();
90 SCM grobs = tr->get_property ("busyGrobs");
91 Moment now = tr->now_mom();
92 for (; gh_pair_p (grobs); grobs = gh_cdr (grobs))
94 SCM grob = gh_cdar (grobs);
95 Moment end =*unsmob_moment (gh_caar (grobs));
99 This is slightly ugh: we are now confunding the frontend
100 (iterators) and the backend (note heads) */
102 && Note_head::has_interface (unsmob_grob (grob)))
110 Lyric_combine_music_iterator::process (Moment m)
112 Moment my_next = music_iter_->pending_moment ();
116 music_iter_->process (m);
118 if (get_busy_status ())
120 bool melisma_b = try_music (melisma_playing_req);
123 if (lyric_iter_->ok ())
125 Moment m= lyric_iter_->pending_moment ();
126 lyric_iter_->process (m);
133 Lyric_combine_music_iterator::do_quit ()
141 Lyric_combine_music_iterator::Lyric_combine_music_iterator (Lyric_combine_music_iterator const & src)
142 : Music_iterator (src)
148 lyric_iter_ = src.lyric_iter_->clone ();
150 music_iter_ = src.music_iter_->clone ();
153 scm_gc_unprotect_object (lyric_iter_->self_scm());
155 scm_gc_unprotect_object (music_iter_->self_scm());
159 Lyric_combine_music_iterator::try_music_in_children (Music *m) const
161 Music_iterator * i = music_iter_->try_music (m);
165 return lyric_iter_->try_music (m);
169 IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);