2 lyric-number-engraver.cc -- implement Stanza_number_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>, Glen Prideaux <glenprideaux@iname.com>
10 #include "engraver.hh"
11 #include "side-position-interface.hh"
13 class Stanza_number_engraver : public Engraver
18 This is naughty, since last_stanza_ may be GCd from under us. But
19 since we don't look at the contents, we are/should be (knock on
24 TRANSLATOR_DECLARATIONS (Stanza_number_engraver);
25 virtual void process_music ();
26 virtual void stop_translation_timestep ();
27 virtual void acknowledge_grob (Grob_info);
32 TODO: should make engraver that collects all the stanzas on a higher
33 level, and then groups them to the side. Stanza numbers should be
37 Stanza_number_engraver::Stanza_number_engraver ()
43 Stanza_number_engraver::process_music ()
45 SCM stanza = get_property ("stanza");
47 if (scm_is_string (stanza) && stanza != last_stanza_)
49 last_stanza_ = stanza;
51 text_ = make_item ("StanzaNumber", SCM_EOL);
52 text_->set_property ("text", stanza);
59 Stanza_number_engraver::acknowledge_grob (Grob_info inf)
62 && inf.grob_->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
64 Side_position_interface::add_support (text_, inf.grob_);
69 Stanza_number_engraver::stop_translation_timestep ()
75 ADD_TRANSLATOR (Stanza_number_engraver,
77 /* creats*/ "StanzaNumber",
79 /* acks */ "lyric-syllable-interface",