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;
33 virtual void derived_substitute (Translator_group*,Translator_group*);
35 bool start_new_syllable () ;
38 Translator_group * lyrics_context_;
39 Translator_group* music_context_;
40 Music_iterator * lyric_iter_;
46 static Music *busy_ev;
47 static Music *start_ev;
48 static Music *melisma_playing_ev;
50 New_lyric_combine_music_iterator::New_lyric_combine_music_iterator ()
58 = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
60 = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
62 = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
67 New_lyric_combine_music_iterator::start_new_syllable ()
69 bool b = music_context_->try_music (busy_ev);
77 if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
79 bool m = music_context_->try_music (melisma_playing_ev);
88 New_lyric_combine_music_iterator::pending_moment () const
98 New_lyric_combine_music_iterator::run_always () const
104 New_lyric_combine_music_iterator::ok () const
106 return lyric_iter_ && lyric_iter_->ok ();
110 New_lyric_combine_music_iterator::derived_mark()const
113 scm_gc_mark (lyric_iter_->self_scm ());
115 scm_gc_mark (lyrics_context_->self_scm ());
117 scm_gc_mark (music_context_->self_scm ());
121 New_lyric_combine_music_iterator::derived_substitute (Translator_group*f, Translator_group*t)
124 lyric_iter_->substitute_outlet (f,t);
125 if (lyrics_context_ && lyrics_context_==f)
127 if (music_context_ && music_context_ == f)
132 ID == "" means accept any ID.
135 find_context_below (Translator_group * where,
136 String type, String id)
138 if (where->is_alias (ly_symbol2scm (type.to_str0 ())))
140 if (id == "" || where->id_string_ == id)
144 Translator_group * found = 0;
145 for (SCM s = where->trans_group_list_;
146 !found && gh_pair_p (s); s = gh_cdr (s))
148 Translator_group * tr = dynamic_cast<Translator_group*> (unsmob_translator (gh_car (s)));
150 found = find_context_below (tr, type, id);
159 New_lyric_combine_music_iterator::construct_children ()
161 Music *m = unsmob_music (get_music ()->get_mus_property ("element"));
162 lyric_iter_ = unsmob_iterator (get_iterator (m));
167 lyrics_context_ = find_context_below (lyric_iter_->report_to (),
171 We do not create a LyricsVoice context, because the user might
172 create one with a different name, and then we will not find that
178 New_lyric_combine_music_iterator::find_thread ()
182 SCM voice_name = get_music ()->get_mus_property ("associated-context");
184 if (gh_string_p (voice_name))
186 Translator_group *t = report_to ();
187 while (t && t->daddy_trans_)
190 String name = ly_scm2string (voice_name);
191 Translator_group *voice = find_context_below (t, "Voice", name);
192 Translator_group *thread = 0;
194 thread = find_context_below (voice, "Thread", "");
196 get_music ()->origin ()->warning (_f ("Cannot find Voice: %s\n",
200 music_context_ = thread;
202 if (lyrics_context_ && voice)
203 lyrics_context_->set_property ("associatedVoiceContext",
210 New_lyric_combine_music_iterator::process (Moment )
216 if (!music_context_->daddy_trans_)
220 lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
224 && start_new_syllable () && lyric_iter_->ok ())
226 Moment m= lyric_iter_->pending_moment ();
227 lyric_iter_->process (m);
232 New_lyric_combine_music_iterator::do_quit ()
238 New_lyric_combine_music_iterator::New_lyric_combine_music_iterator (New_lyric_combine_music_iterator const & src)
239 : Music_iterator (src)
244 lyric_iter_ = src.lyric_iter_->clone ();
247 scm_gc_unprotect_object (lyric_iter_->self_scm());
249 music_context_ = src.music_context_;
250 lyric_iter_ = src.lyric_iter_;
253 assert (false); // shouldn't copy, really.
258 New_lyric_combine_music_iterator::try_music_in_children (Music *m) const
260 return lyric_iter_->try_music (m);
264 IMPLEMENT_CTOR_CALLBACK (New_lyric_combine_music_iterator);