/*
- lyric-number-engraver.cc -- implement Stanza_number_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>, Glen Prideaux <glenprideaux@iname.com>
- (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>, Glen Prideaux <glenprideaux@iname.com>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "engraver.hh"
#include "side-position-interface.hh"
+#include "text-interface.hh"
+#include "item.hh"
class Stanza_number_engraver : public Engraver
{
Item *text_;
- /*
- This is naughty, since last_stanza_ may be GCd from under us. But
- since we don't look at the contents, we are/should be (knock on
- wood) OK.
- */
SCM last_stanza_;
public:
TRANSLATOR_DECLARATIONS (Stanza_number_engraver);
void process_music ();
+ virtual void derived_mark () const;
void stop_translation_timestep ();
- DECLARE_ACKNOWLEDGER(lyric_syllable);
+ void acknowledge_lyric_syllable (Grob_info);
};
+void
+Stanza_number_engraver::derived_mark () const
+{
+ scm_gc_mark (last_stanza_);
+}
+
/*
TODO: should make engraver that collects all the stanzas on a higher
level, and then groups them to the side. Stanza numbers should be
all aligned.
*/
-Stanza_number_engraver::Stanza_number_engraver ()
+Stanza_number_engraver::Stanza_number_engraver (Context *c)
+ : Engraver (c)
{
text_ = 0;
+ last_stanza_ = SCM_EOL;
}
void
{
SCM stanza = get_property ("stanza");
- if (scm_is_string (stanza) && stanza != last_stanza_)
+ if (Text_interface::is_markup (stanza)
+ && !scm_is_eq (stanza, last_stanza_))
{
last_stanza_ = stanza;
Stanza_number_engraver::acknowledge_lyric_syllable (Grob_info inf)
{
if (text_)
- {
- Side_position_interface::add_support (text_, inf.grob ());
- }
+ Side_position_interface::add_support (text_, inf.grob ());
}
void
#include "translator.icc"
-ADD_ACKNOWLEDGER(Stanza_number_engraver,lyric_syllable);
+void
+Stanza_number_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Stanza_number_engraver, lyric_syllable);
+}
+
ADD_TRANSLATOR (Stanza_number_engraver,
- /* descr */ "",
- /* creats*/ "StanzaNumber",
- /* accepts */ "",
- /* reads */ "stanza",
- /* write */ "");
+ /* doc */
+ "Engrave stanza numbers.",
+
+ /* create */
+ "StanzaNumber ",
+
+ /* read */
+ "stanza ",
+
+ /* write */
+ ""
+ );