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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 2000--2015 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 "align-interface.hh"
#include "axis-group-interface.hh"
#include "engraver.hh"
#include "page-layout-problem.hh"
#include "pointer-group-interface.hh"
#include "side-position-interface.hh"
#include "system.hh"
#include "text-interface.hh"
#include "translator.icc"
class Instrument_name_engraver : public Engraver
{
public:
TRANSLATOR_DECLARATIONS (Instrument_name_engraver);
protected:
Spanner *text_spanner_;
SCM long_text_;
SCM short_text_;
vector<Grob *> axis_groups_;
vector<Grob *> backup_axis_groups_;
virtual void finalize ();
void acknowledge_axis_group (Grob_info);
void process_music ();
void start_spanner ();
void consider_start_spanner ();
void stop_spanner ();
virtual void derived_mark () const;
};
void
Instrument_name_engraver::derived_mark () const
{
scm_gc_mark (long_text_);
scm_gc_mark (short_text_);
}
Instrument_name_engraver::Instrument_name_engraver ()
{
text_spanner_ = 0;
long_text_ = SCM_EOL;
short_text_ = SCM_EOL;
}
void
Instrument_name_engraver::process_music ()
{
consider_start_spanner ();
}
void
Instrument_name_engraver::consider_start_spanner ()
{
SCM long_text = get_property ("instrumentName");
SCM short_text = get_property ("shortInstrumentName");
if (!(Text_interface::is_markup (long_text)
|| Text_interface::is_markup (short_text)))
{
long_text = get_property ("vocalName");
short_text = get_property ("shortVocalName");
}
if ((Text_interface::is_markup (long_text)
|| Text_interface::is_markup (short_text))
&& (!text_spanner_
|| !scm_is_eq (short_text_, short_text)
|| !scm_is_eq (long_text_, long_text)))
{
if (text_spanner_)
stop_spanner ();
short_text_ = short_text;
long_text_ = long_text;
start_spanner ();
}
}
void
Instrument_name_engraver::start_spanner ()
{
text_spanner_ = make_spanner ("InstrumentName", SCM_EOL);
Grob *col = unsmob<Grob> (get_property ("currentCommandColumn"));
text_spanner_->set_bound (LEFT, col);
text_spanner_->set_property ("text", short_text_);
text_spanner_->set_property ("long-text", long_text_);
/*
UGH, should handle this in Score_engraver.
*/
Grob *system = unsmob<Grob> (get_property ("rootSystem"));
if (system)
Axis_group_interface::add_element (system, text_spanner_);
else
text_spanner_->programming_error ("cannot find root system");
}
void
Instrument_name_engraver::acknowledge_axis_group (Grob_info info)
{
if (dynamic_cast<Spanner *> (info.grob ())
&& Axis_group_interface::has_axis (info.grob (), Y_AXIS)
/* ugh. */
&& !info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface"))
&& !info.grob ()->internal_has_interface (ly_symbol2scm ("piano-pedal-interface"))
&& !info.grob ()->internal_has_interface (ly_symbol2scm ("volta-interface"))
&& (!has_interface<Align_interface> (info.grob ())))
{
if (Page_layout_problem::is_spaceable (info.grob ()))
axis_groups_.push_back (info.grob ());
else
// By default, don't include non-spaceable staves in the
// support of an instrument name. However, if the only staves
// are non-spaceable, we'll fall back to using them.
backup_axis_groups_.push_back (info.grob ());
}
}
void
Instrument_name_engraver::finalize ()
{
if (text_spanner_)
stop_spanner ();
}
void
Instrument_name_engraver::stop_spanner ()
{
if (axis_groups_.empty ())
axis_groups_ = backup_axis_groups_;
for (vsize i = 0; i < axis_groups_.size (); i++)
Pointer_group_interface::add_grob (text_spanner_,
ly_symbol2scm ("elements"),
axis_groups_[i]);
text_spanner_->set_bound (RIGHT,
unsmob<Grob> (get_property ("currentCommandColumn")));
Pointer_group_interface::set_ordered (text_spanner_,
ly_symbol2scm ("elements"),
false);
text_spanner_ = 0;
}
void
Instrument_name_engraver::boot ()
{
ADD_ACKNOWLEDGER (Instrument_name_engraver, axis_group);
}
ADD_TRANSLATOR (Instrument_name_engraver,
/* doc */
"Create a system start text for instrument or vocal names.",
/* create */
"InstrumentName ",
/* read */
"currentCommandColumn "
"instrumentName "
"shortInstrumentName "
"shortVocalName "
"vocalName ",
/* write */
""
);
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