2 new-lyric-combine-iterator.cc -- implement Lyric_combine_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
12 #include "music-iterator.hh"
15 class Lyric_combine_music_iterator : public Music_iterator
18 Lyric_combine_music_iterator ();
19 Lyric_combine_music_iterator (Lyric_combine_music_iterator const &src);
20 DECLARE_SCHEME_CALLBACK (constructor, ());
22 virtual void construct_children ();
23 virtual Moment pending_moment () const;
24 virtual void do_quit ();
25 virtual void process (Moment);
26 virtual Music_iterator *try_music_in_children (Music *) const;
27 virtual bool run_always ()const;
28 virtual bool ok () const;
29 virtual void derived_mark () const;
30 virtual void derived_substitute (Context *, Context *);
32 bool start_new_syllable ();
36 bool made_association_;
37 Context *lyrics_context_;
38 Context *music_context_;
39 SCM lyricsto_voice_name_;
41 Music_iterator *lyric_iter_;
47 static Music *busy_ev;
48 static Music *start_ev;
49 static Music *melisma_playing_ev;
51 Lyric_combine_music_iterator::Lyric_combine_music_iterator ()
54 made_association_ = false;
60 Ugh. out of place here.
65 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
67 = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
69 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
74 Lyric_combine_music_iterator::start_new_syllable ()
76 bool b = music_context_->try_music (busy_ev);
84 if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
86 bool m = music_context_->try_music (melisma_playing_ev);
95 Lyric_combine_music_iterator::pending_moment () const
105 Lyric_combine_music_iterator::run_always () const
111 Lyric_combine_music_iterator::ok () const
113 return lyric_iter_ && lyric_iter_->ok ();
117 Lyric_combine_music_iterator::derived_mark ()const
120 scm_gc_mark (lyric_iter_->self_scm ());
122 scm_gc_mark (lyrics_context_->self_scm ());
124 scm_gc_mark (music_context_->self_scm ());
128 Lyric_combine_music_iterator::derived_substitute (Context *f, Context *t)
131 lyric_iter_->substitute_outlet (f, t);
132 if (lyrics_context_ && lyrics_context_ == f)
134 if (music_context_ && music_context_ == f)
139 Lyric_combine_music_iterator::construct_children ()
141 Music *m = unsmob_music (get_music ()->get_property ("element"));
142 lyric_iter_ = unsmob_iterator (get_iterator (m));
144 lyricsto_voice_name_ = get_music ()->get_property ("associated-context");
149 lyrics_context_ = find_context_below (lyric_iter_->get_outlet (),
150 ly_symbol2scm ("Lyrics"), "");
153 We do not create a Lyrics context, because the user might
154 create one with a different name, and then we will not find that
160 Lyric_combine_music_iterator::find_voice ()
162 SCM voice_name = lyricsto_voice_name_;
163 SCM running = lyrics_context_ ? lyrics_context_->get_property ("associatedVoice") : SCM_EOL;
165 if (scm_is_string (running))
166 voice_name = running;
168 if (scm_is_string (voice_name)
169 && (!music_context_ || ly_scm2string (voice_name) != music_context_->id_string ()))
174 Need to set associatedVoiceContext again
177 made_association_ = false;
179 Context *t = get_outlet ();
180 while (t && t->get_parent_context ())
181 t = t->get_parent_context ();
183 String name = ly_scm2string (voice_name);
184 Context *voice = find_context_below (t, ly_symbol2scm ("Voice"), name);
187 music_context_ = voice;
190 if (lyrics_context_ && music_context_)
192 if (!made_association_)
194 made_association_ = true;
195 lyrics_context_->set_property ("associatedVoiceContext",
196 music_context_->self_scm ());
202 Lyric_combine_music_iterator::process (Moment)
208 if (!music_context_->get_parent_context ())
215 lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
221 && start_new_syllable () && lyric_iter_->ok ())
223 Moment m = lyric_iter_->pending_moment ();
224 lyric_iter_->process (m);
231 Lyric_combine_music_iterator::do_quit ()
235 SCM voice_name = get_music ()->get_property ("associated-context");
238 if (scm_is_string (voice_name))
239 name = ly_scm2string (voice_name);
241 get_music ()->origin ()->warning (_f ("cannot find Voice `%s'",
242 name.to_str0 ()) + "\n");
246 lyric_iter_->quit ();
250 Lyric_combine_music_iterator::try_music_in_children (Music *m) const
252 return lyric_iter_->try_music (m);
255 IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);