source file of the GNU LilyPond music typesetter
- (c) 1999--2005 Glen Prideaux <glenprideaux@iname.com>,
- Han-Wen Nienhuys <hanwen@cs.uu.nl>,
+ (c) 1999--2007 Glen Prideaux <glenprideaux@iname.com>,
+ Han-Wen Nienhuys <hanwen@xs4all.nl>,
Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "warn.hh"
-#include "item.hh"
#include "engraver.hh"
+#include "international.hh"
+#include "item.hh"
+#include "pointer-group-interface.hh"
#include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
class Hyphen_engraver : public Engraver
{
- Music *ev_;
+ Stream_event *ev_;
+ Stream_event *finished_ev_;
+
Spanner *hyphen_;
Spanner *finished_hyphen_;
+
public:
TRANSLATOR_DECLARATIONS (Hyphen_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
+
+ DECLARE_ACKNOWLEDGER (lyric_syllable);
+ DECLARE_TRANSLATOR_LISTENER (hyphen);
+
virtual void finalize ();
- virtual bool try_music (Music *);
- virtual void stop_translation_timestep ();
- virtual void process_music ();
-private:
+ void stop_translation_timestep ();
+ void process_music ();
};
-
Hyphen_engraver::Hyphen_engraver ()
{
hyphen_ = 0;
finished_hyphen_ = 0;
+ finished_ev_ = 0;
ev_ = 0;
}
void
-Hyphen_engraver::acknowledge_grob (Grob_info i)
+Hyphen_engraver::acknowledge_lyric_syllable (Grob_info i)
{
- Item *item = dynamic_cast<Item *> (i.grob_);
- // -> Text_item
- if (item && item->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
- {
- if (hyphen_)
- hyphen_->set_bound (LEFT, item);
+ Item *item = i.item ();
+
+ if (!hyphen_)
+ hyphen_ = make_spanner ("LyricSpace", item->self_scm ());
- if (finished_hyphen_)
- finished_hyphen_->set_bound (RIGHT, item);
- }
+ if (hyphen_)
+ hyphen_->set_bound (LEFT, item);
+
+ if (finished_hyphen_)
+ finished_hyphen_->set_bound (RIGHT, item);
}
-bool
-Hyphen_engraver::try_music (Music *r)
+IMPLEMENT_TRANSLATOR_LISTENER (Hyphen_engraver, hyphen);
+void
+Hyphen_engraver::listen_hyphen (Stream_event *ev)
{
- if (ev_)
- return false;
-
- ev_ = r;
- return true;
+ ASSIGN_EVENT_ONCE (ev_, ev);
}
void
{
if (!sp->get_bound (RIGHT))
{
- SCM heads = sp->get_property ("heads");
- if (scm_is_pair (heads))
- {
- Item *it = dynamic_cast<Item *> (unsmob_grob (scm_car (heads)));
- if (it)
- sp->set_bound (RIGHT, it);
- }
+ extract_item_set (sp, "heads", heads);
+ if (heads.size ())
+ sp->set_bound (RIGHT, heads.back ());
}
}
if (!finished_hyphen_->get_bound (RIGHT))
{
- finished_hyphen_->warning (_ ("unterminated hyphen; removing"));
+ if (finished_ev_)
+ finished_hyphen_->warning (_ ("unterminated hyphen; removing"));
finished_hyphen_->suicide ();
}
finished_hyphen_ = 0;
Hyphen_engraver::process_music ()
{
if (ev_)
- {
- hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ());
- }
+ hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ());
}
void
if (finished_hyphen_ && finished_hyphen_->get_bound (RIGHT))
{
finished_hyphen_ = 0;
+ finished_ev_ = 0;
}
-
+
if (finished_hyphen_ && hyphen_)
{
- programming_error ("Haven't finished hyphen yet.");
+ programming_error ("hyphen not finished yet");
finished_hyphen_ = 0;
+ finished_ev_ = 0;
}
if (hyphen_)
- finished_hyphen_ = hyphen_;
+ {
+ finished_hyphen_ = hyphen_;
+ finished_ev_ = ev_;
+ }
+
hyphen_ = 0;
-
ev_ = 0;
}
+ADD_ACKNOWLEDGER (Hyphen_engraver, lyric_syllable);
ADD_TRANSLATOR (Hyphen_engraver,
- /* descr */ "Create lyric hyphens",
- /* creats*/ "LyricHyphen",
- /* accepts */ "hyphen-event",
- /* acks */ "lyric-syllable-interface",
- /* reads */ "",
+ /* doc */ "Create lyric hyphens and "
+ "distance constraints between words.",
+ /* create */ "LyricHyphen LyricSpace",
+ /* read */ "",
/* write */ "");