/*
- staff-symbol-engraver.cc -- implement Staff_symbol_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--2007 Han-Wen Nienhuys <hanwen@xs4all.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 "engraver.hh"
void stop_translation_timestep ();
virtual ~Staff_symbol_engraver ();
- DECLARE_ACKNOWLEDGER (grob);
- DECLARE_TRANSLATOR_LISTENER (staff_span);
+ void acknowledge_grob (Grob_info);
+ void listen_staff_span (Stream_event *);
virtual void finalize ();
void process_music ();
+ virtual void derived_mark () const;
};
+void
+Staff_symbol_engraver::derived_mark () const
+{
+ for (LEFT_and_RIGHT (d))
+ {
+ if (span_events_[d])
+ scm_gc_mark (span_events_[d]->self_scm ());
+ }
+}
+
Staff_symbol_engraver::~Staff_symbol_engraver ()
{
- assert (!span_);
+ if (span_)
+ {
+ // Somehow finalize() was not called?
+ programming_error ("Have a pending spanner in destructor.");
+ }
}
-Staff_symbol_engraver::Staff_symbol_engraver ()
+Staff_symbol_engraver::Staff_symbol_engraver (Context *c)
+ : Engraver (c)
{
finished_span_ = 0;
first_start_ = true;
span_ = 0;
- span_events_[LEFT] = 0;
- span_events_[RIGHT] = 0;
+ span_events_.set (0, 0);
}
-IMPLEMENT_TRANSLATOR_LISTENER (Staff_symbol_engraver, staff_span);
void
Staff_symbol_engraver::listen_staff_span (Stream_event *ev)
{
if (d)
ASSIGN_EVENT_ONCE (span_events_[d], ev);
else
- programming_error (_ ("staff-span event has no direction"));
+ programming_error ("staff-span event has no direction");
}
void
finished_span_ = span_;
span_ = 0;
if (first_start_)
- first_start_ = false;
+ first_start_ = false;
}
if (span_events_[START]
{
span_ = make_spanner ("StaffSymbol", SCM_EOL);
span_->set_bound (LEFT,
- unsmob_grob (get_property ("currentCommandColumn")));
+ unsmob<Grob> (get_property ("currentCommandColumn")));
}
}
return;
if (!finished_span_->get_bound (RIGHT))
- finished_span_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
-
+ finished_span_->set_bound (RIGHT, unsmob<Grob> (get_property ("currentCommandColumn")));
+
announce_end_grob (finished_span_,
- span_events_[STOP]
- ? span_events_[STOP]->self_scm ()
- : SCM_EOL);
-
+ span_events_[STOP]
+ ? span_events_[STOP]->self_scm ()
+ : SCM_EOL);
+
finished_span_ = 0;
}
{
if ((span_events_[START] || first_start_)
&& span_)
- {
- first_start_ = false;
- }
+ first_start_ = false;
- span_events_[START] = 0;
- span_events_[STOP] = 0;
+ span_events_.set (0, 0);
stop_spanner ();
}
void
Staff_symbol_engraver::acknowledge_grob (Grob_info s)
{
- /*
- Perhaps should try to take SeparationItem as bound of the staff
- symbol?
- */
if (span_ || finished_span_)
{
Spanner *my = span_ ? span_ : finished_span_;
}
}
-ADD_ACKNOWLEDGER (Staff_symbol_engraver, grob);
+
+void
+Staff_symbol_engraver::boot ()
+{
+ ADD_LISTENER (Staff_symbol_engraver, staff_span);
+ ADD_ACKNOWLEDGER (Staff_symbol_engraver, grob);
+}
ADD_TRANSLATOR (Staff_symbol_engraver,
- /* doc */ "Create the constellation of five (default) "
- "staff lines.",
- /* create */ "StaffSymbol",
- /* read */ "",
- /* write */ "");
+ /* doc */
+ "Create the constellation of five (default) staff lines.",
+
+ /* create */
+ "StaffSymbol ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );