/*
- tweak-engraver.cc -- implement Tweak_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005--2007 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"
DECLARE_ACKNOWLEDGER (grob);
};
-Tweak_engraver::Tweak_engraver()
+Tweak_engraver::Tweak_engraver ()
{
}
void
Tweak_engraver::acknowledge_grob (Grob_info info)
{
- if (Stream_event *ev = info.event_cause ())
+ Stream_event *ev = info.event_cause ();
+ bool direct = ev;
+ SCM grobname = SCM_UNDEFINED;
+ if (!direct)
+ ev = info.ultimate_event_cause ();
+ if (ev)
{
+ // Each tweak conses an address and a value.
+ // The address has one of the following forms:
+ // symbol -> direct tweak
+ // (grob . symbol) -> targeted tweak
+ // (#t . symbol-path) -> direct nested tweak
+ // (grob . symbol-path) -> targeted nested tweak
for (SCM s = ev->get_property ("tweaks");
- scm_is_pair (s); s = scm_cdr (s))
- {
- info.grob ()->set_property (scm_caar (s), scm_cdar (s));
- }
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ if (scm_is_pair (scm_caar (s)))
+ {
+ if (scm_is_symbol (scm_caaar (s)))
+ {
+ if (SCM_UNBNDP (grobname))
+ grobname = scm_from_utf8_symbol
+ (info.grob ()->name ().c_str ());
+ if (scm_is_eq (scm_caaar (s), grobname))
+ {
+ if (scm_is_symbol (scm_cdaar (s)))
+ info.grob ()->set_property (scm_cdaar (s), scm_cdar (s));
+ else
+ set_nested_property (info.grob (), scm_cdaar (s),
+ scm_cdar (s));
+ }
+ }
+ else if (direct)
+ set_nested_property (info.grob (), scm_cdaar (s),
+ scm_cdar (s));
+ }
+ else if (direct)
+ info.grob ()->set_property (scm_caar (s), scm_cdar (s));
+ }
}
}
ADD_ACKNOWLEDGER (Tweak_engraver, grob);
ADD_TRANSLATOR (Tweak_engraver,
- /* doc */ "Read the @code{tweaks} property from the originating event, and set properties." ,
-
- /* create */ "",
- /* read */ "",
- /* write */ "");
+ /* doc */
+ "Read the @code{tweaks} property from the originating event,"
+ " and set properties.",
+
+ /* create */
+ "",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );