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)
46 if (r->is_mus_type ("lyric-event"))
57 Lyric_engraver::process_music ()
61 text_= make_item ("LyricText");
63 text_->set_property ("text", event_->get_property ("text"));
64 announce_grob (text_, event_->self_scm ());
70 get_voice_to_lyrics (Context *lyrics)
72 SCM avc = lyrics->get_property ("associatedVoiceContext");
73 if (Context *c = unsmob_context (avc))
76 SCM voice_name = lyrics->get_property ("associatedVoice");
77 String nm = lyrics->id_string_;
79 if (ly_c_string_p (voice_name))
80 nm = ly_scm2string (voice_name);
83 int idx = nm.index_last ('-');
85 nm = nm.left_string (idx);
88 Context *parent = lyrics;
90 while (parent && !voice)
92 voice = find_context_below (parent, ly_symbol2scm ("Voice"), nm);
93 parent = parent->get_parent_context ();
101 while (parent && !voice)
103 voice = find_context_below (parent, ly_symbol2scm ("Voice"), "");
104 parent = parent->get_parent_context ();
111 get_current_note_head (Context * voice)
113 for (SCM s = voice->get_property ("busyGrobs");
114 ly_c_pair_p (s); s = ly_cdr (s))
116 Item*g = dynamic_cast<Item*> (unsmob_grob (ly_cdar (s)));
118 if (g && !g->get_column ()
119 && Note_head::has_interface (g))
127 Lyric_engraver::stop_translation_timestep ()
131 Context * voice = get_voice_to_lyrics (context ());
135 Grob *head = get_current_note_head (voice);
139 text_->set_parent (head, X_AXIS);
140 if (melisma_busy (voice))
141 text_->set_property ("self-alignment-X", scm_int2num (LEFT));
145 typeset_grob (text_);
152 ENTER_DESCRIPTION (Lyric_engraver,
155 /* accepts */ "lyric-event",