2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "engraver.hh"
23 #include "stream-event.hh"
25 #include "translator.icc"
29 class Output_property_engraver : public Engraver
31 TRANSLATOR_DECLARATIONS (Output_property_engraver);
33 vector<Stream_event*> props_;
35 DECLARE_ACKNOWLEDGER (grob);
36 DECLARE_TRANSLATOR_LISTENER (apply_output);
38 void stop_translation_timestep ();
41 IMPLEMENT_TRANSLATOR_LISTENER (Output_property_engraver, apply_output);
43 Output_property_engraver::listen_apply_output (Stream_event *ev)
46 UGH. Only swallow the output property event in the context
47 it was intended for. This is inelegant but not inefficient.
49 if (context ()->is_alias (ev->get_property ("context-type")))
50 props_.push_back (ev);
54 Output_property_engraver::acknowledge_grob (Grob_info inf)
56 for (vsize i = props_.size (); i--;)
58 Stream_event *o = props_[i];
59 Context *d = inf.context ();
60 SCM grob = o->get_property ("symbol");
61 if (scm_is_symbol (grob)
62 && ly_symbol2string (grob) != inf.grob ()->name ())
64 SCM proc = o->get_property ("procedure");
66 inf.grob ()->self_scm (),
68 context ()->self_scm ());
73 Output_property_engraver::stop_translation_timestep ()
78 Output_property_engraver::Output_property_engraver ()
82 ADD_ACKNOWLEDGER (Output_property_engraver, grob);
83 ADD_TRANSLATOR (Output_property_engraver,
85 "Apply a procedure to any grob acknowledged.",