lily/tweak-engraver.cc

   1 /*
   2   tweak-engraver.cc -- implement Tweak_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "engraver.hh"
  11
  12 #include "grob.hh"
  13 #include "stream-event.hh"
  14 #include "translator.icc"
  15
  16 class Tweak_engraver : public Engraver
  17 {
  18   TRANSLATOR_DECLARATIONS (Tweak_engraver);
  19
  20 protected:
  21   DECLARE_ACKNOWLEDGER (grob);
  22 };
  23
  24 Tweak_engraver::Tweak_engraver ()
  25 {
  26 }
  27
  28 void
  29 Tweak_engraver::acknowledge_grob (Grob_info info)
  30 {
  31   if (Stream_event *ev = info.event_cause ())
  32     {
  33       for (SCM s = ev->get_property ("tweaks");
  34            scm_is_pair (s); s = scm_cdr (s))
  35         {
  36           info.grob ()->set_property (scm_caar (s), scm_cdar (s));
  37         }
  38     }
  39 }
  40
  41 ADD_ACKNOWLEDGER (Tweak_engraver, grob);
  42 ADD_TRANSLATOR (Tweak_engraver,
  43                 /* doc */
  44                 "Read the @code{tweaks} property from the originating event,"
  45                 " and set properties.",
  46
  47                 /* create */
  48                 "",
  49
  50                 /* read */
  51                 "",
  52
  53                 /* write */
  54                 ""
  55                 );