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>
10 #include "translator-group.hh"
11 #include "lyric-combine-music.hh"
14 #include "music-iterator.hh"
17 class New_lyric_combine_music_iterator : public Music_iterator
20 VIRTUAL_COPY_CONS (Music_iterator);
21 New_lyric_combine_music_iterator ();
22 New_lyric_combine_music_iterator (New_lyric_combine_music_iterator const&src);
23 DECLARE_SCHEME_CALLBACK(constructor, ());
25 virtual void construct_children ();
26 virtual Moment pending_moment () const;
27 virtual void do_quit();
28 virtual void process (Moment);
29 virtual Music_iterator *try_music_in_children (Music *) const;
30 virtual bool run_always ()const;
31 virtual bool ok () const;
32 virtual void derived_mark () const;
34 bool start_new_syllable () ;
37 Translator_group * lyrics_context_;
38 Translator_group* music_context_;
39 Music_iterator * lyric_iter_;
45 static Music *busy_ev;
46 static Music *start_ev;
47 static Music *melisma_playing_ev;
49 New_lyric_combine_music_iterator::New_lyric_combine_music_iterator ()
57 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
59 = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
61 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
66 New_lyric_combine_music_iterator::start_new_syllable ()
68 bool b = music_context_->try_music (busy_ev);
73 if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
75 bool m = music_context_->try_music (melisma_playing_ev);
84 New_lyric_combine_music_iterator::pending_moment () const
94 New_lyric_combine_music_iterator::run_always () const
100 New_lyric_combine_music_iterator::ok () const
102 return lyric_iter_ && lyric_iter_->ok ();
106 New_lyric_combine_music_iterator::derived_mark()const
109 scm_gc_mark (lyric_iter_->self_scm ());
111 scm_gc_mark (lyrics_context_->self_scm ());
113 scm_gc_mark (music_context_->self_scm ());
117 ID == "" means accept any ID.
120 find_context_below (Translator_group * where,
121 String type, String id)
123 if (where->context_name () == type)
125 if (id == "" || where->id_string_ == id)
129 Translator_group * found = 0;
130 for (SCM s = where->trans_group_list_;
131 !found && gh_pair_p (s); s = gh_cdr (s))
133 Translator_group * tr = dynamic_cast<Translator_group*> (unsmob_translator (gh_car (s)));
136 found = find_context_below (tr, type, id);
145 New_lyric_combine_music_iterator::construct_children ()
147 Music *m = unsmob_music (get_music ()->get_mus_property ("element"));
148 lyric_iter_ = unsmob_iterator (get_iterator (m));
152 lyrics_context_ = find_context_below (lyric_iter_->report_to (), "LyricsVoice", "");
159 New_lyric_combine_music_iterator::find_thread ()
163 SCM voice_name = get_music ()->get_mus_property ("associated-context");
165 if (gh_string_p (voice_name))
167 Translator_group *t = report_to ();
168 while (t && t->daddy_trans_)
171 String name = ly_scm2string (voice_name);
172 Translator_group* voice = find_context_below (t, "Voice", name);
173 Translator_group *thread = 0;
175 thread = find_context_below (voice, "Thread", "");
177 get_music ()->origin ()->warning (_f("Cannot find Voice: %s\n", name.to_str0()));
180 music_context_ = thread;
182 if (lyrics_context_ && voice)
183 lyrics_context_->set_property ("associatedVoiceContext", voice->self_scm ());
189 New_lyric_combine_music_iterator::process (Moment )
193 if (!music_context_->daddy_trans_)
197 lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
201 && start_new_syllable () && lyric_iter_->ok ())
203 Moment m= lyric_iter_->pending_moment ();
204 lyric_iter_->process (m);
209 New_lyric_combine_music_iterator::do_quit ()
215 New_lyric_combine_music_iterator::New_lyric_combine_music_iterator (New_lyric_combine_music_iterator const & src)
216 : Music_iterator (src)
221 lyric_iter_ = src.lyric_iter_->clone ();
224 scm_gc_unprotect_object (lyric_iter_->self_scm());
226 music_context_ = src.music_context_;
227 lyric_iter_ = src.lyric_iter_;
230 assert (false); // shouldn't copy, really.
235 New_lyric_combine_music_iterator::try_music_in_children (Music *m) const
237 return lyric_iter_->try_music (m);
241 IMPLEMENT_CTOR_CALLBACK (New_lyric_combine_music_iterator);