/*
- rest-grav.cc -- implement Rest_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ 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 "item.hh"
-#include "staff-symbol-referencer.hh"
-#include "musical-request.hh"
+
+#include "engraver.hh"
+
#include "dots.hh"
+#include "duration.hh"
+#include "item.hh"
+#include "pitch.hh"
#include "rhythmic-head.hh"
-#include "engraver.hh"
+#include "staff-symbol-referencer.hh"
+#include "stream-event.hh"
+#include "translator.icc"
class Rest_engraver : public Engraver
{
- Rest_req *rest_req_l_;
- Item * dot_p_;
- Grob* rest_p_;
+ Stream_event *rest_event_;
+ Item *dot_;
+ Grob *rest_;
protected:
- virtual bool try_music (Music *);
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
- virtual void process_music ();
-
+ void start_translation_timestep ();
+ void process_music ();
+ void listen_rest (Stream_event *);
public:
- TRANSLATOR_DECLARATIONS(Rest_engraver);
+ TRANSLATOR_DECLARATIONS (Rest_engraver);
};
-
/*
Should merge with Note_head_engraver
- */
-Rest_engraver::Rest_engraver ()
+*/
+Rest_engraver::Rest_engraver (Context *c)
+ : Engraver (c)
{
- rest_req_l_ =0;
- rest_p_ =0;
- dot_p_ =0;
+ rest_event_ = 0;
+ rest_ = 0;
+ dot_ = 0;
}
void
Rest_engraver::start_translation_timestep ()
{
- rest_req_l_ =0;
+ rest_event_ = 0;
+ rest_ = 0;
+ dot_ = 0;
}
void
-Rest_engraver::stop_translation_timestep ()
+Rest_engraver::process_music ()
{
- if (rest_p_)
+ if (rest_event_ && !rest_)
{
- typeset_grob (rest_p_);
- rest_p_ =0;
+ rest_ = make_item ("Rest", rest_event_->self_scm ());
+ Pitch *p = unsmob<Pitch> (rest_event_->get_property ("pitch"));
+
+ if (p)
+ {
+ int pos = p->steps ();
+ SCM c0 = get_property ("middleCPosition");
+ if (scm_is_number (c0))
+ pos += scm_to_int (c0);
+
+ rest_->set_property ("staff-position", scm_from_int (pos));
+ }
}
- if (dot_p_)
- {
- typeset_grob (dot_p_);
- dot_p_ =0;
- }
}
void
-Rest_engraver::process_music ()
+Rest_engraver::listen_rest (Stream_event *ev)
{
- if (rest_req_l_ && !rest_p_)
- {
- rest_p_ = new Item (get_property ("Rest"));
-
-
-
- int durlog = unsmob_duration (rest_req_l_->get_mus_property ("duration"))-> duration_log ();
-
- rest_p_->set_grob_property ("duration-log",
- gh_int2scm (durlog));
-
- int dots =unsmob_duration (rest_req_l_->get_mus_property ("duration"))->dot_count ();
-
- if (dots)
- {
- dot_p_ = new Item (get_property ("Dots"));
-
- Rhythmic_head::set_dots (rest_p_, dot_p_);
- dot_p_->set_parent (rest_p_, Y_AXIS);
- dot_p_->set_grob_property ("dot-count", gh_int2scm (dots));
- announce_grob (dot_p_, SCM_EOL);
- }
-
- Pitch *p = unsmob_pitch (rest_req_l_->get_mus_property ("pitch"));
-
- /*
- This is ridiculous -- rests don't have pitch, but we act as if
- our nose is bleeding.
- */
- if (p)
- {
- int pos= p->steps ();
- SCM c0 = get_property ("centralCPosition");
- if (gh_number_p (c0))
- pos += gh_scm2int (c0);
-
- rest_p_->set_grob_property ("staff-position", gh_int2scm (pos));
- }
-
- announce_grob(rest_p_, rest_req_l_->self_scm());
- }
+ ASSIGN_EVENT_ONCE (rest_event_, ev);
}
-bool
-Rest_engraver::try_music (Music *m)
+void
+Rest_engraver::boot ()
{
- if (Rest_req *r = dynamic_cast <Rest_req *> (m))
- {
- rest_req_l_ = r;
- return true;
- }
- return false;
+ ADD_LISTENER (Rest_engraver, rest);
}
+ADD_TRANSLATOR (Rest_engraver,
+ /* doc */
+ "Engrave rests.",
+
+ /* create */
+ "Rest ",
+ /* read */
+ "middleCPosition ",
-ENTER_DESCRIPTION(Rest_engraver,
-/* descr */ "",
-/* creats*/ "Rest Dots",
-/* acks */ "",
-/* reads */ "centralCPosition",
-/* write */ "");
+ /* write */
+ ""
+ );