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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 2000--2015 Jan Nieuwenhuizen <janneke@gnu.org>
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"
#include "note-head.hh"
#include "side-position-interface.hh"
#include "stem.hh"
#include "stream-event.hh"
#include "text-interface.hh"
#include "item.hh"
#include "translator.icc"
class Part_combine_engraver : public Engraver
{
TRANSLATOR_DECLARATIONS (Part_combine_engraver);
protected:
void acknowledge_note_head (Grob_info);
void acknowledge_stem (Grob_info);
void listen_part_combine (Stream_event *);
void listen_note (Stream_event *);
void process_music ();
void stop_translation_timestep ();
void create_item (Stream_event *ev);
private:
Item *text_;
Stream_event *new_event_; // Event happened at this moment
bool note_found_;
// Event possibly from an earlier moment waiting to create a text:
Stream_event *waiting_event_;
};
void
Part_combine_engraver::listen_part_combine (Stream_event *ev)
{
ASSIGN_EVENT_ONCE (new_event_, ev);
// If two events occur at the same moment, discard the second as the
// warning indicates:
waiting_event_ = new_event_;
}
void
Part_combine_engraver::listen_note (Stream_event *)
{
note_found_ = true;
}
Part_combine_engraver::Part_combine_engraver ()
{
text_ = 0;
new_event_ = 0;
waiting_event_ = 0;
note_found_ = false;
}
void
Part_combine_engraver::create_item (Stream_event *ev)
{
SCM what = scm_car (ev->get_property ("class"));
SCM text = SCM_EOL;
if (scm_is_eq (what, ly_symbol2scm ("solo-one-event")))
text = get_property ("soloText");
else if (scm_is_eq (what, ly_symbol2scm ("solo-two-event")))
text = get_property ("soloIIText");
else if (scm_is_eq (what, ly_symbol2scm ("unisono-event")))
text = get_property ("aDueText");
if (Text_interface::is_markup (text))
{
text_ = make_item ("CombineTextScript", ev->self_scm ());
text_->set_property ("text", text);
}
}
void
Part_combine_engraver::process_music ()
{
if (waiting_event_
&& to_boolean (get_property ("printPartCombineTexts")))
{
if (note_found_ || !to_boolean (get_property ("partCombineTextsOnNote")))
{
create_item (waiting_event_);
waiting_event_ = 0;
}
}
}
void
Part_combine_engraver::acknowledge_note_head (Grob_info i)
{
if (text_)
{
Grob *t = text_;
Side_position_interface::add_support (t, i.grob ());
if (Side_position_interface::get_axis (t) == X_AXIS
&& !t->get_parent (Y_AXIS))
t->set_parent (i.grob (), Y_AXIS);
}
}
void
Part_combine_engraver::acknowledge_stem (Grob_info i)
{
if (text_)
Side_position_interface::add_support (text_, i.grob ());
}
void
Part_combine_engraver::stop_translation_timestep ()
{
text_ = 0;
new_event_ = 0;
note_found_ = false;
}
void
Part_combine_engraver::boot ()
{
ADD_LISTENER (Part_combine_engraver, part_combine);
ADD_LISTENER (Part_combine_engraver, note);
ADD_ACKNOWLEDGER (Part_combine_engraver, note_head);
ADD_ACKNOWLEDGER (Part_combine_engraver, stem);
}
ADD_TRANSLATOR (Part_combine_engraver,
/* doc */
"Part combine engraver for orchestral scores: Print markings"
" @q{a2}, @q{Solo}, @q{Solo II}, and @q{unisono}.",
/* create */
"CombineTextScript ",
/* read */
"printPartCombineTexts "
"partCombineTextsOnNote "
"soloText "
"soloIIText "
"aDueText ",
/* write */
""
);
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