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;
35 melisma_start_req->set_span_dir (START);
36 melisma_stop_req->set_span_dir (STOP);
43 Lyric_combine_music_iterator::pending_moment () const
45 Moment musnext = music_iter_p_->pending_moment ();
50 Lyric_combine_music_iterator::ok () const
52 return music_iter_p_->ok ();
57 Lyric_combine_music_iterator::construct_children ()
59 Lyric_combine_music const * m = dynamic_cast<Lyric_combine_music const*> (music_l ());
61 music_iter_p_ = get_iterator_p (m->music_l ());
62 lyric_iter_p_ = get_iterator_p (m->lyrics_l ());
66 Lyric_combine_music_iterator::get_busy_status () const
69 We have to use both the request and the busyGrobs queue. The
70 busyGrobs queue doesn't contain any notes that have started this
72 if (try_music (busy_req))
75 Translator_group * tr = music_iter_p_->report_to_l ();
77 SCM grobs = tr->get_property ("busyGrobs");
78 Moment now = tr->now_mom();
79 for (; gh_pair_p (grobs); grobs = gh_cdr (grobs))
81 SCM grob = gh_cdar (grobs);
82 Moment end =*unsmob_moment (gh_caar (grobs));
86 This is slightly ugh: we are now confunding the frontend
87 (iterators) and the backend (note heads) */
89 && Note_head::has_interface (unsmob_grob (grob)))
97 Lyric_combine_music_iterator::process (Moment m)
99 Moment my_next = music_iter_p_->pending_moment ();
103 music_iter_p_->process (m);
105 if ( get_busy_status ())
107 bool melisma_b = try_music (melisma_playing_req);
110 if (lyric_iter_p_->ok ())
113 #if 0 // devise a new way for this
114 if (melisma_b && !melisma_started_b_)
115 lyric_iter_p_->try_music (melisma_start_req);
116 else if (melisma_started_b_)
117 lyric_iter_p_->try_music (melisma_stop_req);
120 Moment m= lyric_iter_p_->pending_moment ();
121 lyric_iter_p_->process (m);
128 Lyric_combine_music_iterator::~Lyric_combine_music_iterator ()
130 delete lyric_iter_p_;
131 delete music_iter_p_;
134 Lyric_combine_music_iterator::Lyric_combine_music_iterator (Lyric_combine_music_iterator const & src)
135 : Music_iterator (src)
137 lyric_iter_p_ = src.lyric_iter_p_ ? src.lyric_iter_p_->clone () : 0;
138 music_iter_p_ = src.music_iter_p_ ? src.music_iter_p_->clone () : 0;
142 Lyric_combine_music_iterator::try_music_in_children (Music *m) const
144 Music_iterator * i = music_iter_p_->try_music (m);
148 return lyric_iter_p_->try_music (m);
152 IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);