2 lyric-engraver.cc -- implement Lyric_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "engraver.hh"
14 #include "font-metric.hh"
15 #include "note-head.hh"
18 Generate texts for lyric syllables. We only do one lyric at a time.
19 Multiple copies of this engraver should be used to do multiple voices.
21 class Lyric_engraver : public Engraver
24 virtual void stop_translation_timestep ();
25 virtual bool try_music (Music *);
26 virtual void process_music ();
29 TRANSLATOR_DECLARATIONS (Lyric_engraver);
34 Context* get_voice_context ();
37 Lyric_engraver::Lyric_engraver ()
44 Lyric_engraver::try_music (Music*r)
53 Lyric_engraver::process_music ()
57 text_= make_item ("LyricText",event_->self_scm ());
59 text_->set_property ("text", event_->get_property ("text"));
65 get_voice_to_lyrics (Context *lyrics)
67 SCM avc = lyrics->get_property ("associatedVoiceContext");
68 if (Context *c = unsmob_context (avc))
71 SCM voice_name = lyrics->get_property ("associatedVoice");
72 String nm = lyrics->id_string ();
74 if (ly_c_string_p (voice_name))
75 nm = ly_scm2string (voice_name);
78 int idx = nm.index_last ('-');
80 nm = nm.left_string (idx);
83 Context *parent = lyrics;
85 while (parent && !voice)
87 voice = find_context_below (parent, ly_symbol2scm ("Voice"), nm);
88 parent = parent->get_parent_context ();
96 while (parent && !voice)
98 voice = find_context_below (parent, ly_symbol2scm ("Voice"), "");
99 parent = parent->get_parent_context ();
106 get_current_note_head (Context * voice)
108 for (SCM s = voice->get_property ("busyGrobs");
109 ly_c_pair_p (s); s = ly_cdr (s))
111 Item*g = dynamic_cast<Item*> (unsmob_grob (ly_cdar (s)));
113 if (g && !g->get_column ()
114 && Note_head::has_interface (g))
122 Lyric_engraver::stop_translation_timestep ()
126 Context * voice = get_voice_to_lyrics (context ());
130 Grob *head = get_current_note_head (voice);
134 text_->set_parent (head, X_AXIS);
135 if (melisma_busy (voice))
136 text_->set_property ("self-alignment-X", scm_int2num (LEFT));
146 ENTER_DESCRIPTION (Lyric_engraver,
148 /* creats*/ "LyricText",
149 /* accepts */ "lyric-event",