2 new-lyric-combine-iterator.cc -- implement Lyric_combine_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
12 #include "international.hh"
13 #include "music-iterator.hh"
16 class Lyric_combine_music_iterator : public Music_iterator
19 Lyric_combine_music_iterator ();
20 Lyric_combine_music_iterator (Lyric_combine_music_iterator const &src);
21 DECLARE_SCHEME_CALLBACK (constructor, ());
23 virtual void construct_children ();
24 virtual Moment pending_moment () const;
25 virtual void do_quit ();
26 virtual void process (Moment);
27 virtual Music_iterator *try_music_in_children (Music *) const;
28 virtual bool run_always ()const;
29 virtual bool ok () const;
30 virtual void derived_mark () const;
31 virtual void derived_substitute (Context *, Context *);
33 bool start_new_syllable ();
36 bool pending_grace_lyric_;
38 bool made_association_;
39 Context *lyrics_context_;
40 Context *music_context_;
41 SCM lyricsto_voice_name_;
43 Music_iterator *lyric_iter_;
47 Ugh; this is a hack, let's not export this hack, so static.
49 static Music *busy_ev;
50 static Music *start_ev;
51 static Music *melisma_playing_ev;
53 Lyric_combine_music_iterator::Lyric_combine_music_iterator ()
56 made_association_ = false;
57 pending_grace_lyric_ = false;
63 Ugh. out of place here.
68 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
70 = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
72 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
77 Lyric_combine_music_iterator::start_new_syllable ()
79 bool b = music_context_->try_music (busy_ev);
87 if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
89 bool m = music_context_->try_music (melisma_playing_ev);
98 Lyric_combine_music_iterator::pending_moment () const
108 Lyric_combine_music_iterator::run_always () const
114 Lyric_combine_music_iterator::ok () const
116 return lyric_iter_ && lyric_iter_->ok ();
120 Lyric_combine_music_iterator::derived_mark ()const
123 scm_gc_mark (lyric_iter_->self_scm ());
125 scm_gc_mark (lyrics_context_->self_scm ());
127 scm_gc_mark (music_context_->self_scm ());
131 Lyric_combine_music_iterator::derived_substitute (Context *f, Context *t)
134 lyric_iter_->substitute_outlet (f, t);
135 if (lyrics_context_ && lyrics_context_ == f)
137 if (music_context_ && music_context_ == f)
142 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");
152 lyrics_context_ = find_context_below (lyric_iter_->get_outlet (),
153 ly_symbol2scm ("Lyrics"), "");
156 We do not create a Lyrics context, because the user might
157 create one with a different name, and then we will not find that
163 Lyric_combine_music_iterator::find_voice ()
165 SCM voice_name = lyricsto_voice_name_;
166 SCM running = lyrics_context_
167 ? lyrics_context_->get_property ("associatedVoice")
170 if (scm_is_string (running))
171 voice_name = running;
173 if (scm_is_string (voice_name)
174 && (!music_context_ || ly_scm2string (voice_name) != music_context_->id_string ()))
179 Need to set associatedVoiceContext again
182 made_association_ = false;
184 Context *t = get_outlet ();
185 while (t && t->get_parent_context ())
186 t = t->get_parent_context ();
188 string name = ly_scm2string (voice_name);
189 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 Lyric_combine_music_iterator::process (Moment mom)
214 if (!music_context_->get_parent_context ())
221 lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
227 && (start_new_syllable () || pending_grace_lyric_)
228 && lyric_iter_->ok ())
230 if (music_context_->now_mom ().grace_part_)
232 pending_grace_lyric_ = true;
236 pending_grace_lyric_ = false;
238 Moment m = lyric_iter_->pending_moment ();
239 lyric_iter_->process (m);
246 Lyric_combine_music_iterator::do_quit ()
250 SCM voice_name = get_music ()->get_property ("associated-context");
253 if (scm_is_string (voice_name))
254 name = ly_scm2string (voice_name);
256 get_music ()->origin ()->warning (_f ("cannot find Voice `%s'",
257 name.c_str ()) + "\n");
261 lyric_iter_->quit ();
265 Lyric_combine_music_iterator::try_music_in_children (Music *m) const
267 return lyric_iter_->try_music (m);
270 IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);