2 lyric-engraver.cc -- implement Lyric_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "engraver.hh"
12 #include "font-metric.hh"
14 #include "multi-measure-rest.hh"
15 #include "note-head.hh"
19 Generate texts for lyric syllables. We only do one lyric at a time.
20 Multiple copies of this engraver should be used to do multiple voices.
22 class Lyric_engraver : public Engraver
25 virtual void stop_translation_timestep ();
26 virtual bool try_music (Music *);
27 virtual void process_music ();
30 TRANSLATOR_DECLARATIONS (Lyric_engraver);
36 Context *get_voice_context ();
39 Lyric_engraver::Lyric_engraver ()
46 Lyric_engraver::try_music (Music*r)
57 Lyric_engraver::process_music ()
61 text_ = make_item ("LyricText", event_->self_scm ());
62 text_->set_property ("text", event_->get_property ("text"));
68 get_voice_to_lyrics (Context *lyrics)
70 SCM avc = lyrics->get_property ("associatedVoiceContext");
71 if (Context *c = unsmob_context (avc))
74 SCM voice_name = lyrics->get_property ("associatedVoice");
75 String nm = lyrics->id_string ();
77 if (scm_is_string (voice_name))
78 nm = ly_scm2string (voice_name);
81 int idx = nm.index_last ('-');
83 nm = nm.left_string (idx);
86 Context *parent = lyrics;
88 while (parent && !voice)
90 voice = find_context_below (parent, ly_symbol2scm ("Voice"), nm);
91 parent = parent->get_parent_context ();
99 while (parent && !voice)
101 voice = find_context_below (parent, ly_symbol2scm ("Voice"), "");
102 parent = parent->get_parent_context ();
109 get_current_note_head (Context *voice)
111 for (SCM s = voice->get_property ("busyGrobs");
112 scm_is_pair (s); s = scm_cdr (s))
114 Item *g = dynamic_cast<Item*> (unsmob_grob (scm_cdar (s)));
116 if (g && !g->get_column ()
117 && Note_head::has_interface (g))
125 Lyric_engraver::stop_translation_timestep ()
129 Context *voice = get_voice_to_lyrics (context ());
133 Grob *head = get_current_note_head (voice);
137 text_->set_parent (head, X_AXIS);
138 if (melisma_busy (voice))
139 text_->set_property ("self-alignment-X", scm_int2num (LEFT));
149 ADD_TRANSLATOR (Lyric_engraver,
151 /* creats*/ "LyricText",
152 /* accepts */ "lyric-event",