source file of the GNU LilyPond music typesetter
- (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "context.hh"
+#include "dispatcher.hh"
+#include "global-context.hh"
#include "grob.hh"
#include "input.hh"
#include "international.hh"
+#include "listener.hh"
#include "music-iterator.hh"
#include "music.hh"
+/*
+ This iterator is hairy. It tracks both lyric and melody contexts,
+ and has a complicated communication route, reading/writing
+ properties in both.
+
+ In the future, this should rather be done with
+
+ \interpretAsMelodyFor { MUSIC } { LYRICS LYRICS LYRICS }
+
+ This can run an interpret step on MUSIC, generating a stream. Then
+ the stream can be perused at leisure to apply durations to all of
+ the LYRICS.
+*/
+
class Lyric_combine_music_iterator : public Music_iterator
{
public:
virtual Moment pending_moment () const;
virtual void do_quit ();
virtual void process (Moment);
- virtual Music_iterator *try_music_in_children (Music *) const;
virtual bool run_always ()const;
virtual bool ok () const;
virtual void derived_mark () const;
virtual void derived_substitute (Context *, Context *);
+ void set_music_context (Context *to);
private:
- bool start_new_syllable ();
- void find_voice ();
+ bool start_new_syllable () const;
+ Context *find_voice ();
+ DECLARE_LISTENER (set_busy);
+ DECLARE_LISTENER (check_new_context);
- bool pending_grace_lyric_;
bool music_found_;
- bool made_association_;
Context *lyrics_context_;
Context *music_context_;
SCM lyricsto_voice_name_;
+ Moment busy_moment_;
+ Moment pending_grace_moment_;
+
Music_iterator *lyric_iter_;
};
-/*
- Ugh; this is a hack, let's not export this hack, so static.
-*/
-static Music *busy_ev;
-static Music *start_ev;
-static Music *melisma_playing_ev;
-
Lyric_combine_music_iterator::Lyric_combine_music_iterator ()
{
music_found_ = false;
- made_association_ = false;
- pending_grace_lyric_ = false;
+ pending_grace_moment_.set_infinite (1);
lyric_iter_ = 0;
music_context_ = 0;
lyrics_context_ = 0;
+ busy_moment_.set_infinite (-1);
+}
- /*
- Ugh. out of place here.
- */
- if (!busy_ev)
+
+/*
+ It's dubious whether we can ever make this fully work. Due to
+ associatedVoice switching, this routine may be triggered for
+ the wrong music_context_
+ */
+IMPLEMENT_LISTENER (Lyric_combine_music_iterator, set_busy)
+void
+Lyric_combine_music_iterator::set_busy (SCM se)
+{
+ Stream_event *e = unsmob_stream_event (se);
+
+ if ((e->in_event_class ("note-event") || e->in_event_class ("cluster-note-event"))
+ && music_context_)
+
+ busy_moment_ = max (music_context_->now_mom (),
+ busy_moment_);
+
+}
+
+void
+Lyric_combine_music_iterator::set_music_context (Context *to)
+{
+ if (music_context_)
+ {
+ music_context_->event_source ()->
+ remove_listener (GET_LISTENER (set_busy), ly_symbol2scm ("music-event"));
+ }
+
+ music_context_ = to;
+ if (to)
{
- busy_ev
- = make_music_by_name (ly_symbol2scm ("BusyPlayingEvent"));
- start_ev
- = make_music_by_name (ly_symbol2scm ("StartPlayingEvent"));
- melisma_playing_ev
- = make_music_by_name (ly_symbol2scm ("MelismaPlayingEvent"));
+ to->event_source ()->add_listener (GET_LISTENER (set_busy),
+ ly_symbol2scm ("music-event"));
}
}
bool
-Lyric_combine_music_iterator::start_new_syllable ()
+Lyric_combine_music_iterator::start_new_syllable () const
{
- bool b = music_context_->try_music (busy_ev);
-
- if (!b)
+ if (busy_moment_ < music_context_->now_mom ())
return false;
if (!lyrics_context_)
if (!to_boolean (lyrics_context_->get_property ("ignoreMelismata")))
{
- bool m = music_context_->try_music (melisma_playing_ev);
+ bool m = melisma_busy (music_context_);
if (m)
return false;
}
if (lyrics_context_ && lyrics_context_ == f)
lyrics_context_ = t;
if (music_context_ && music_context_ == f)
- music_context_ = t;
+ set_music_context (t);
}
void
{
Music *m = unsmob_music (get_music ()->get_property ("element"));
lyric_iter_ = unsmob_iterator (get_iterator (m));
+ if (!lyric_iter_)
+ return;
+ lyrics_context_ = find_context_below (lyric_iter_->get_outlet (),
+ ly_symbol2scm ("Lyrics"), "");
+ if (!lyrics_context_)
+ {
+ m->origin ()->warning ("argument of \\lyricsto should contain Lyrics context");
+ }
+
lyricsto_voice_name_ = get_music ()->get_property ("associated-context");
- find_voice ();
+ Context *voice = find_voice ();
+ if (voice)
+ set_music_context (voice);
- if (lyric_iter_)
- lyrics_context_ = find_context_below (lyric_iter_->get_outlet (),
- ly_symbol2scm ("Lyrics"), "");
+ /*
+ Wait for a Create_context event. If this isn't done, lyrics can be
+ delayed when voices are created implicitly.
+ */
+ Global_context *g = get_outlet ()->get_global_context ();
+ g->events_below ()->add_listener (GET_LISTENER (check_new_context), ly_symbol2scm ("CreateContext"));
/*
We do not create a Lyrics context, because the user might
*/
}
+IMPLEMENT_LISTENER (Lyric_combine_music_iterator, check_new_context)
void
+Lyric_combine_music_iterator::check_new_context (SCM sev)
+{
+ if (!ok ())
+ return ;
+
+ // TODO: Check first if type=Voice and if id matches
+ Stream_event * ev = unsmob_stream_event (sev);
+ if (ev->get_property ("type") != ly_symbol2scm ("Voice"))
+ return ;
+
+ Context *voice = find_voice ();
+
+ if (voice)
+ {
+ set_music_context (voice);
+ }
+}
+
+/*
+ Look for a suitable voice to align lyrics to.
+
+ Returns 0 if nothing should change; i.e., if we already listen to the
+ right voice, or if we don't yet listen to a voice but no appropriate
+ voice could be found.
+*/
+Context *
Lyric_combine_music_iterator::find_voice ()
{
SCM voice_name = lyricsto_voice_name_;
if (scm_is_string (voice_name)
&& (!music_context_ || ly_scm2string (voice_name) != music_context_->id_string ()))
{
- /*
- (spaghettini).
-
- Need to set associatedVoiceContext again
- */
- if (music_context_)
- made_association_ = false;
-
Context *t = get_outlet ();
while (t && t->get_parent_context ())
t = t->get_parent_context ();
string name = ly_scm2string (voice_name);
- Context *voice = find_context_below (t, ly_symbol2scm ("Voice"), name);
-
- if (voice)
- music_context_ = voice;
+ return find_context_below (t, ly_symbol2scm ("Voice"), name);
}
- if (lyrics_context_ && music_context_)
- {
- if (!made_association_)
- {
- made_association_ = true;
- lyrics_context_->set_property ("associatedVoiceContext",
- music_context_->self_scm ());
- }
- }
+ return 0;
}
void
-Lyric_combine_music_iterator::process (Moment mom)
+Lyric_combine_music_iterator::process (Moment when)
{
- (void) mom;
- find_voice ();
+ (void) when;
+
+ /* see if associatedVoice has been changed */
+ Context *new_voice = find_voice ();
+ if (new_voice)
+ set_music_context (new_voice);
+
if (!music_context_)
return;
if (lyrics_context_)
lyrics_context_->unset_property (ly_symbol2scm ("associatedVoiceContext"));
lyric_iter_ = 0;
- music_context_ = 0;
+ set_music_context (0);
}
+
if (music_context_
- && (start_new_syllable () || pending_grace_lyric_)
+ && (start_new_syllable () ||
+ (busy_moment_ >= pending_grace_moment_))
&& lyric_iter_->ok ())
{
- if (music_context_->now_mom ().grace_part_)
+ Moment now = music_context_->now_mom ();
+ if (now.grace_part_)
{
- pending_grace_lyric_ = true;
+ pending_grace_moment_ = now;
+ pending_grace_moment_.grace_part_ = Rational (0);
return;
}
else
- pending_grace_lyric_ = false;
+ {
+ pending_grace_moment_.set_infinite (1);
+ }
Moment m = lyric_iter_->pending_moment ();
+ lyrics_context_->set_property (ly_symbol2scm ("associatedVoiceContext"),
+ music_context_->self_scm ());
lyric_iter_->process (m);
music_found_ = true;
}
+
+ new_voice = find_voice ();
+ if (new_voice)
+ set_music_context (new_voice);
}
void
lyric_iter_->quit ();
}
-Music_iterator *
-Lyric_combine_music_iterator::try_music_in_children (Music *m) const
-{
- return lyric_iter_->try_music (m);
-}
-
IMPLEMENT_CTOR_CALLBACK (Lyric_combine_music_iterator);
projects / lilypond.git / blobdiff