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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg <mandolaerik@gmail.com>
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"
#include "global-context.hh"
#include "international.hh"
#include "item.hh"
#include "side-position-interface.hh"
#include "spanner.hh"
#include "stream-event.hh"
#include "warn.hh"
#include "translator.icc"
class Percent_repeat_engraver : public Engraver
{
void typeset_perc ();
public:
TRANSLATOR_DECLARATIONS (Percent_repeat_engraver);
protected:
Stream_event *percent_event_;
// moment (global time) where percent started
Moment start_mom_;
// moment (global time) where percent should end
Moment stop_mom_;
Spanner *percent_;
Spanner *percent_counter_;
Grob *first_command_column_;
Moment command_moment_;
virtual void finalize ();
void listen_percent (Stream_event *);
void start_translation_timestep ();
void stop_translation_timestep ();
void process_music ();
};
Percent_repeat_engraver::Percent_repeat_engraver ()
{
percent_ = 0;
percent_counter_ = 0;
percent_event_ = 0;
first_command_column_ = 0;
command_moment_ = Moment (-1);
}
void
Percent_repeat_engraver::start_translation_timestep ()
{
if (now_mom ().main_part_ != command_moment_.main_part_)
{
first_command_column_
= unsmob<Grob> (get_property ("currentCommandColumn"));
command_moment_ = now_mom ();
}
if (stop_mom_.main_part_ == now_mom ().main_part_)
{
if (percent_)
typeset_perc ();
percent_event_ = 0;
}
}
void
Percent_repeat_engraver::listen_percent (Stream_event *ev)
{
if (!percent_event_)
{
Moment body_length = get_event_length (ev);
start_mom_ = now_mom ();
stop_mom_ = now_mom () + body_length;
get_global_context ()->add_moment_to_process (stop_mom_);
percent_event_ = ev;
}
else
{
/*
print a warning: no assignment happens because
percent_event_ != 0
*/
ASSIGN_EVENT_ONCE (percent_event_, ev);
}
}
void
Percent_repeat_engraver::process_music ()
{
if (percent_event_
&& now_mom ().main_part_ == start_mom_.main_part_)
{
if (percent_)
typeset_perc ();
percent_ = make_spanner ("PercentRepeat", percent_event_->self_scm ());
Grob *col = first_command_column_;
percent_->set_bound (LEFT, col);
SCM count = percent_event_->get_property ("repeat-count");
if (!scm_is_null (count) && to_boolean (get_property ("countPercentRepeats"))
&& check_repeat_count_visibility (context (), count))
{
percent_counter_ = make_spanner ("PercentRepeatCounter",
percent_event_->self_scm ());
SCM text = scm_number_to_string (count, scm_from_int (10));
percent_counter_->set_property ("text", text);
percent_counter_->set_bound (LEFT, col);
Side_position_interface::add_support (percent_counter_, percent_);
percent_counter_->set_parent (percent_, Y_AXIS);
percent_counter_->set_parent (percent_, X_AXIS);
}
else
percent_counter_ = 0;
}
}
void
Percent_repeat_engraver::finalize ()
{
if (percent_)
{
percent_event_->origin ()->warning (_ ("unterminated percent repeat"));
percent_->suicide ();
percent_counter_->suicide ();
}
}
void
Percent_repeat_engraver::typeset_perc ()
{
Grob *col = first_command_column_;
percent_->set_bound (RIGHT, col);
percent_ = 0;
if (percent_counter_)
percent_counter_->set_bound (RIGHT, col);
percent_counter_ = 0;
}
void
Percent_repeat_engraver::stop_translation_timestep ()
{
}
void
Percent_repeat_engraver::boot ()
{
ADD_LISTENER (Percent_repeat_engraver, percent);
}
ADD_TRANSLATOR (Percent_repeat_engraver,
/* doc */
"Make whole measure repeats.",
/* create */
"PercentRepeat "
"PercentRepeatCounter ",
/* read */
"countPercentRepeats "
"currentCommandColumn "
"repeatCountVisibility ",
/* write */
""
);
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