-/*
- lyric-number-engraver.cc -- implement Stanza_number_engraver
-
+/*
+ lyric-number-engraver.cc -- implement Stanza_number_engraver
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>, Glen Prideaux <glenprideaux@iname.com>
+ (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>, Glen Prideaux <glenprideaux@iname.com>
*/
#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);
- virtual void process_music ();
- virtual void stop_translation_timestep ();
- virtual void acknowledge_grob (Grob_info);
+ void process_music ();
+ virtual void derived_mark () const;
+ void stop_translation_timestep ();
+ DECLARE_ACKNOWLEDGER (lyric_syllable);
};
+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 ()
{
text_ = 0;
+ last_stanza_ = SCM_EOL;
}
void
Stanza_number_engraver::process_music ()
{
SCM stanza = get_property ("stanza");
-
- if (scm_is_string (stanza) && stanza != last_stanza_)
+
+ if (Text_interface::is_markup (stanza)
+ && stanza != last_stanza_)
{
last_stanza_ = stanza;
-
+
text_ = make_item ("StanzaNumber", SCM_EOL);
text_->set_property ("text", stanza);
-
}
}
-
void
-Stanza_number_engraver::acknowledge_grob (Grob_info inf)
+Stanza_number_engraver::acknowledge_lyric_syllable (Grob_info inf)
{
- if (text_
- && inf.grob_->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
- {
- Side_position_interface::add_support (text_, inf.grob_);
- }
+ if (text_)
+ Side_position_interface::add_support (text_, inf.grob ());
}
void
text_ = 0;
}
+#include "translator.icc"
+ADD_ACKNOWLEDGER (Stanza_number_engraver, lyric_syllable);
ADD_TRANSLATOR (Stanza_number_engraver,
-/* descr */ "",
-/* creats*/ "StanzaNumber",
-/* accepts */ "",
-/* acks */ "lyric-syllable-interface",
-/* reads */ "stanza",
-/* write */ "");
+ /* doc */
+ "Engrave stanza numbers.",
+
+ /* create */
+ "StanzaNumber ",
+
+ /* read */
+ "stanza ",
+
+ /* write */
+ ""
+ );