2 new-lyric-combine-iterator.cc -- implement New_lyric_combine_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "lyric-combine-music.hh"
14 #include "music-iterator.hh"
17 class New_lyric_combine_music_iterator : public Music_iterator
20 New_lyric_combine_music_iterator ();
21 New_lyric_combine_music_iterator (New_lyric_combine_music_iterator const&src);
22 DECLARE_SCHEME_CALLBACK (constructor, ());
24 virtual void construct_children ();
25 virtual Moment pending_moment () const;
26 virtual void do_quit ();
27 virtual void process (Moment);
28 virtual Music_iterator *try_music_in_children (Music *) const;
29 virtual bool run_always ()const;
30 virtual bool ok () const;
31 virtual void derived_mark () const;
32 virtual void derived_substitute (Context *,Context *);
34 bool start_new_syllable () ;
38 bool made_association_;
39 Context * lyrics_context_;
40 Context * music_context_;
41 SCM lyricsto_voice_name_;
43 Music_iterator * lyric_iter_;
49 static Music *busy_ev;
50 static Music *start_ev;
51 static Music *melisma_playing_ev;
53 New_lyric_combine_music_iterator::New_lyric_combine_music_iterator ()
56 made_association_ = false;
62 Ugh. out of place here.
67 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
69 = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
71 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
76 New_lyric_combine_music_iterator::start_new_syllable ()
78 bool b = music_context_->try_music (busy_ev);
86 if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
88 bool m = music_context_->try_music (melisma_playing_ev);
97 New_lyric_combine_music_iterator::pending_moment () const
107 New_lyric_combine_music_iterator::run_always () const
113 New_lyric_combine_music_iterator::ok () const
115 return lyric_iter_ && lyric_iter_->ok ();
119 New_lyric_combine_music_iterator::derived_mark ()const
122 scm_gc_mark (lyric_iter_->self_scm ());
124 scm_gc_mark (lyrics_context_->self_scm ());
126 scm_gc_mark (music_context_->self_scm ());
130 New_lyric_combine_music_iterator::derived_substitute (Context *f, Context *t)
133 lyric_iter_->substitute_outlet (f,t);
134 if (lyrics_context_ && lyrics_context_==f)
136 if (music_context_ && music_context_ == f)
142 New_lyric_combine_music_iterator::construct_children ()
144 Music *m = unsmob_music (get_music ()->get_property ("element"));
145 lyric_iter_ = unsmob_iterator (get_iterator (m));
147 lyricsto_voice_name_ = get_music ()->get_property ("associated-context");
153 lyrics_context_ = find_context_below (lyric_iter_->get_outlet (),
154 ly_symbol2scm ("Lyrics"), "");
157 We do not create a Lyrics context, because the user might
158 create one with a different name, and then we will not find that
164 New_lyric_combine_music_iterator::find_voice ()
166 SCM voice_name = lyricsto_voice_name_;
167 SCM running = lyrics_context_ ? lyrics_context_->get_property ("associatedVoice") : SCM_EOL;
169 if (ly_c_string_p (running))
170 voice_name = running;
172 if (ly_c_string_p (voice_name)
173 && (!music_context_ || ly_scm2string (voice_name) != music_context_->id_string ()))
178 Need to set associatedVoiceContext again
181 made_association_ = false;
183 Context *t = get_outlet ();
184 while (t && t->get_parent_context ())
185 t = t->get_parent_context ();
187 String name = ly_scm2string (voice_name);
188 Context *voice = find_context_below (t, ly_symbol2scm ("Voice"), name);
192 music_context_ = voice;
195 if (lyrics_context_ && music_context_)
197 if (!made_association_)
199 made_association_ = true;
200 lyrics_context_->set_property ("associatedVoiceContext",
201 music_context_->self_scm ());
207 New_lyric_combine_music_iterator::process (Moment )
213 if (!music_context_->get_parent_context ())
220 lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
226 && start_new_syllable () && lyric_iter_->ok ())
228 Moment m= lyric_iter_->pending_moment ();
229 lyric_iter_->process (m);
236 New_lyric_combine_music_iterator::do_quit ()
240 SCM voice_name = get_music ()->get_property ("associated-context");
243 if (ly_c_string_p (voice_name))
244 name = ly_scm2string (voice_name);
246 get_music ()->origin ()->warning (_f ("Haven't found Voice `%s'.",
247 name.to_str0 ()) + "\n");
251 lyric_iter_->quit ();
257 New_lyric_combine_music_iterator::try_music_in_children (Music *m) const
259 return lyric_iter_->try_music (m);
263 IMPLEMENT_CTOR_CALLBACK (New_lyric_combine_music_iterator);