/*
- 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--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2005 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 "score.hh"
-#include "paper-column.hh"
-#include "output-def.hh"
-#include "side-position-interface.hh"
#include "engraver.hh"
-#include "moment.hh"
+#include "international.hh"
+#include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
-/**
- Manage the staff symbol.
-*/
class Staff_symbol_engraver : public Engraver
{
public:
TRANSLATOR_DECLARATIONS (Staff_symbol_engraver);
protected:
+ Drul_array<Stream_event *> span_events_;
Spanner *span_;
+ Spanner *finished_span_;
+ bool first_start_;
+protected:
+ virtual void start_spanner ();
+ virtual void stop_spanner ();
+
+ void stop_translation_timestep ();
virtual ~Staff_symbol_engraver ();
- virtual void acknowledge_grob (Grob_info);
+ DECLARE_ACKNOWLEDGER (grob);
+ DECLARE_TRANSLATOR_LISTENER (staff_span);
virtual void finalize ();
- virtual void process_music ();
+ 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 ()
{
+ finished_span_ = 0;
+ first_start_ = true;
span_ = 0;
+ span_events_.set (0, 0);
+}
+
+IMPLEMENT_TRANSLATOR_LISTENER (Staff_symbol_engraver, staff_span);
+void
+Staff_symbol_engraver::listen_staff_span (Stream_event *ev)
+{
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ if (d)
+ ASSIGN_EVENT_ONCE (span_events_[d], ev);
+ else
+ programming_error ("staff-span event has no direction");
}
void
Staff_symbol_engraver::process_music ()
{
- if (!span_)
+ if (span_events_[STOP])
{
- span_ = make_spanner ("StaffSymbol", SCM_EOL);
-
- span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
-
+ finished_span_ = span_;
+ span_ = 0;
+ if (first_start_)
+ first_start_ = false;
}
+
+ if (span_events_[START]
+ || (first_start_ && !span_events_[STOP]))
+ start_spanner ();
}
void
-Staff_symbol_engraver::finalize ()
+Staff_symbol_engraver::start_spanner ()
{
- if (span_)
+ if (!span_)
{
- span_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
+ span_ = make_spanner ("StaffSymbol", SCM_EOL);
+ span_->set_bound (LEFT,
+ unsmob_grob (get_property ("currentCommandColumn")));
}
- span_ = 0;
}
void
-Staff_symbol_engraver::acknowledge_grob (Grob_info s)
+Staff_symbol_engraver::stop_spanner ()
{
- s.grob_->set_property ("staff-symbol", span_->self_scm ());
-}
+ if (!finished_span_)
+ return;
+ if (!finished_span_->get_bound (RIGHT))
+ finished_span_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
-ADD_TRANSLATOR (Staff_symbol_engraver,
- /* descr */ "Create the constellation of five (default) "
- "staff lines.",
- /* creats*/ "StaffSymbol",
- /* accepts */ "",
- /* acks */ "grob-interface",
- /* reads */ "",
- /* write */ "");
+ announce_end_grob (finished_span_,
+ span_events_[STOP]
+ ? span_events_[STOP]->self_scm ()
+ : SCM_EOL);
-/****************************************************************/
+ finished_span_ = 0;
+}
-class Tab_staff_symbol_engraver : public Staff_symbol_engraver
+void
+Staff_symbol_engraver::stop_translation_timestep ()
{
-public:
- TRANSLATOR_DECLARATIONS (Tab_staff_symbol_engraver);
-protected:
- virtual void process_music ();
-};
+ if ((span_events_[START] || first_start_)
+ && span_)
+ first_start_ = false;
+
+ span_events_.set (0, 0);
+ stop_spanner ();
+}
void
-Tab_staff_symbol_engraver::process_music ()
+Staff_symbol_engraver::finalize ()
{
- bool init = !span_;
- Staff_symbol_engraver::process_music ();
- if (init)
- {
- int k = scm_ilength (get_property ("stringTunings"));
- if (k>= 0)
- span_->set_property ("line-count", scm_int2num (k));
- }
+ finished_span_ = span_;
+ span_ = 0;
+ stop_spanner ();
}
-Tab_staff_symbol_engraver::Tab_staff_symbol_engraver ()
+/*
+ Todo: staff-symbol-referencer iface.
+*/
+void
+Staff_symbol_engraver::acknowledge_grob (Grob_info s)
{
+ if (span_ || finished_span_)
+ {
+ Spanner *my = span_ ? span_ : finished_span_;
+ s.grob ()->set_object ("staff-symbol", my->self_scm ());
+ }
}
-ADD_TRANSLATOR (Tab_staff_symbol_engraver,
- /* descr */ "Create a staff-symbol, but look at stringTunings for the number of lines."
- "staff lines.",
- /* creats*/ "StaffSymbol",
- /* accepts */ "",
- /* acks */ "grob-interface",
- /* reads */ "stringTunings",
- /* write */ "");
+ADD_ACKNOWLEDGER (Staff_symbol_engraver, grob);
+
+ADD_TRANSLATOR (Staff_symbol_engraver,
+ /* doc */
+ "Create the constellation of five (default) staff lines.",
+
+ /* create */
+ "StaffSymbol ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff