/*
- part-combine-engraver.cc -- implement PC-engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ 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 "text-item.hh"
#include "note-head.hh"
-#include "stem.hh"
#include "side-position-interface.hh"
-#include "multi-measure-rest.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:
- virtual void acknowledge_grob (Grob_info);
- virtual void process_music ();
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
+ 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_;
- Music *event_;
+ 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_;
};
-bool
-Part_combine_engraver::try_music (Music *m)
+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 *)
{
- event_ = m;
- return true;
+ note_found_ = true;
}
-Part_combine_engraver::Part_combine_engraver ()
+Part_combine_engraver::Part_combine_engraver (Context *c)
+ : Engraver (c)
{
text_ = 0;
- event_ = 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 (event_
+ if (waiting_event_
&& to_boolean (get_property ("printPartCombineTexts")))
{
- SCM what = event_->get_property ("part-combine-status");
- SCM text = SCM_EOL;
- if (what == ly_symbol2scm ("solo1"))
- text = get_property ("soloText");
- else if (what == ly_symbol2scm ("solo2"))
- text = get_property ("soloIIText");
- else if (what == ly_symbol2scm ("unisono"))
- text = get_property ("aDueText");
-
- if (Text_interface::markup_p (text))
- {
- text_ = make_item ("CombineTextScript", event_->self_scm ());
- text_->set_property ("text", text);
- }
+ if (note_found_ || !to_boolean (get_property ("partCombineTextsOnNote")))
+ {
+ create_item (waiting_event_);
+ waiting_event_ = 0;
+ }
}
}
void
-Part_combine_engraver::acknowledge_grob (Grob_info i)
+Part_combine_engraver::acknowledge_note_head (Grob_info i)
{
if (text_)
{
- if (Note_head::has_interface (i.grob_))
- {
- 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);
- }
- if (Stem::has_interface (i.grob_))
- {
- Side_position_interface::add_support (text_, i.grob_);
- }
+ 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;
- event_ = 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,
- /* descr */ "Part combine engraver for orchestral scores: "
- "Print markings a2, Solo, Solo II, and unisono ",
- /* creats*/ "CombineTextScript",
- /* accepts */ "part-combine-event",
- /* acks */ "multi-measure-rest-interface "
- "slur-interface stem-interface note-head-interface",
- /* reads */ "printPartCombineTexts soloText soloIIText "
- "aDueText",
- /* write */ "");
+ /* 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 */
+ ""
+ );
projects / lilypond.git / blobdiff