-/*
- note-head-line-engraver.cc -- implement Note_head_line_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
-#include "warn.hh"
-#include "event.hh"
-#include "spanner.hh"
-#include "rhythmic-head.hh"
-#include "engraver.hh"
+ Copyright (C) 2000--2010 Jan Nieuwenhuizen <janneke@gnu.org>
-/**
- Create line-spanner grobs for glissandi lines that connect note
- heads.
+ 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 "international.hh"
+#include "rhythmic-head.hh"
+#include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+#include "item.hh"
+
+#include "translator.icc"
+
class Glissando_engraver : public Engraver
{
public:
TRANSLATOR_DECLARATIONS (Glissando_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
+ DECLARE_TRANSLATOR_LISTENER (glissando);
+ DECLARE_ACKNOWLEDGER (rhythmic_head);
virtual void finalize ();
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
- virtual void process_music ();
+
+ void stop_translation_timestep ();
+ void process_music ();
private:
- Spanner *line_;
- Spanner *last_line_;
- Music* event_;
+ Spanner *line_;
+ Spanner *last_line_;
+ Stream_event *event_;
};
Glissando_engraver::Glissando_engraver ()
event_ = 0;
}
-bool
-Glissando_engraver::try_music (Music* m)
+IMPLEMENT_TRANSLATOR_LISTENER (Glissando_engraver, glissando);
+void
+Glissando_engraver::listen_glissando (Stream_event *ev)
{
- if (!event_)
- {
- event_ = m;
- return true;
- }
- return false;
+ ASSIGN_EVENT_ONCE (event_, ev);
}
void
Glissando_engraver::process_music ()
{
if (event_)
- {
- line_ = make_spanner ("Glissando", event_->self_scm ());
- }
+ line_ = make_spanner ("Glissando", event_->self_scm ());
}
-
void
-Glissando_engraver::acknowledge_grob (Grob_info info)
+Glissando_engraver::acknowledge_rhythmic_head (Grob_info info)
{
- if (Rhythmic_head::has_interface (info.grob_))
- {
- Grob * g = info.grob_;
- if (line_)
- line_->set_bound (LEFT, g);
+ Grob *g = info.grob ();
+ if (line_)
+ line_->set_bound (LEFT, g);
- if (last_line_)
- last_line_->set_bound (RIGHT, g);
- }
+ if (last_line_)
+ {
+ last_line_->set_bound (RIGHT, g);
+ announce_end_grob (last_line_, g->self_scm ());
+ }
}
-
void
Glissando_engraver::stop_translation_timestep ()
{
if (last_line_ && last_line_->get_bound (RIGHT))
{
- last_line_ =0;
+ last_line_ = 0;
}
if (line_)
{
- if ( last_line_)
- programming_error ("Overwriting glissando.");
+ if (last_line_)
+ programming_error ("overwriting glissando");
last_line_ = line_;
}
line_ = 0;
{
if (line_)
{
- String msg = _("Unterminated glissando.");
-
+ string msg = _ ("unterminated glissando");
+
if (event_)
event_->origin ()->warning (msg);
else
warning (msg);
-
+
line_->suicide ();
- line_ =0;
+ line_ = 0;
}
}
+ADD_ACKNOWLEDGER (Glissando_engraver, rhythmic_head);
+ADD_TRANSLATOR (Glissando_engraver,
+ /* doc */
+ "Engrave glissandi.",
+
+ /* create */
+ "Glissando ",
+ /* read */
+ "",
-ENTER_DESCRIPTION (Glissando_engraver,
-/* descr */ "Engrave a glissandi",
-/* creats*/ "Glissando",
-/* accepts */ "glissando-event",
-/* acks */ "rhythmic-head-interface",
-/* reads */ "followVoice",
-/* write */ "");
+ /* write */
+ ""
+ );