/*
- ledger-line-engraver.cc -- implement Ledger_line_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2004--2006 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 "pointer-group-interface.hh"
#include "engraver.hh"
#include "staff-symbol.hh"
+#include "translator.icc"
+
class Ledger_line_engraver : public Engraver
{
Spanner *span_;
+ vector<Grob *> ledgered_grobs_;
public:
TRANSLATOR_DECLARATIONS (Ledger_line_engraver);
virtual void finalize ();
void process_music ();
- DECLARE_ACKNOWLEDGER (ledgered);
- DECLARE_ACKNOWLEDGER (staff_symbol);
+ void acknowledge_ledgered (Grob_info);
+ void acknowledge_staff_symbol (Grob_info);
void start_spanner ();
void stop_spanner ();
+ void stop_translation_timestep ();
};
-Ledger_line_engraver::Ledger_line_engraver ()
+Ledger_line_engraver::Ledger_line_engraver (Context *c)
+ : Engraver (c)
{
span_ = 0;
}
Ledger_line_engraver::start_spanner ()
{
assert (!span_);
+
span_ = make_spanner ("LedgerLineSpanner", SCM_EOL);
+ span_->set_bound (LEFT, unsmob<Grob> (get_property ("currentCommandColumn")));
+}
+
+void
+Ledger_line_engraver::stop_translation_timestep ()
+{
+ if (span_)
+ {
+ for (vsize i = 0; i < ledgered_grobs_.size (); i++)
+ {
+ if (!to_boolean (ledgered_grobs_[i]->get_property ("no-ledgers")))
+ Pointer_group_interface::add_grob (span_,
+ ly_symbol2scm ("note-heads"),
+ ledgered_grobs_[i]);
+ }
+ }
- span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+ ledgered_grobs_.clear ();
}
void
Ledger_line_engraver::process_music ()
{
/*
- Need to do this, otherwise the first note might miss ledgers.
+ Need to do this, otherwise the first note might miss ledgers.
*/
if (!span_)
start_spanner ();
{
if (span_)
{
- span_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
- Pointer_group_interface::set_ordered (span_, ly_symbol2scm ("elements"), false);
+ span_->set_bound (RIGHT, unsmob<Grob> (get_property ("currentCommandColumn")));
span_ = 0;
}
}
Spanner *sym = dynamic_cast<Spanner *> (s.grob ());
if (!span_
- || (span_->get_bound (LEFT) != sym->get_bound (LEFT)
- && sym->get_bound (LEFT)))
+ || (span_->get_bound (LEFT) != sym->get_bound (LEFT)))
{
stop_spanner ();
start_spanner ();
void
Ledger_line_engraver::acknowledge_ledgered (Grob_info s)
{
- if (span_)
- {
- if (!to_boolean (s.grob ()->get_property ("no-ledgers")))
- Pointer_group_interface::add_grob (span_, ly_symbol2scm ("note-heads"),
- s.grob ());
- }
+ ledgered_grobs_.push_back (s.grob ());
}
-#include "translator.icc"
+void
+Ledger_line_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Ledger_line_engraver, ledgered);
+ ADD_ACKNOWLEDGER (Ledger_line_engraver, staff_symbol);
+}
-ADD_ACKNOWLEDGER (Ledger_line_engraver, ledgered);
-ADD_ACKNOWLEDGER (Ledger_line_engraver, staff_symbol);
ADD_TRANSLATOR (Ledger_line_engraver,
- "Creates the spanner to draw ledger lines, and notices objects that need ledger lines",
- /* create */ "LedgerLineSpanner",
- /* accept */ "",
- /* read */ "",
- /* write */ "")
+ /* doc */
+ "Create the spanner to draw ledger lines, and notices"
+ " objects that need ledger lines.",
+
+ /* create */
+ "LedgerLineSpanner ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );