lily/pitch-squash-engraver.cc

   1 /*
   2   pitch-squash-engraver.cc -- implement Pitch_squash_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8 #include "staff-symbol-referencer.hh"
   9 #include "note-head.hh"
  10 #include "rhythmic-head.hh"
  11 #include "engraver.hh"
  12
  13 class Pitch_squash_engraver : public Engraver
  14 {
  15 public:
  16   TRANSLATOR_DECLARATIONS (Pitch_squash_engraver);
  17   DECLARE_ACKNOWLEDGER (note_head);
  18 };
  19
  20 void
  21 Pitch_squash_engraver::acknowledge_note_head (Grob_info i)
  22 {
  23   SCM newpos = get_property ("squashedPosition");
  24   if (scm_is_number (newpos))
  25     i.grob ()->set_property ("staff-position", newpos);
  26 }
  27
  28 Pitch_squash_engraver::Pitch_squash_engraver ()
  29 {
  30 }
  31
  32 #include "translator.icc"
  33 ADD_ACKNOWLEDGER (Pitch_squash_engraver, note_head);
  34 ADD_TRANSLATOR (Pitch_squash_engraver,
  35                 /* doc */
  36                 "Set the vertical position of noteheads to "
  37                 "@code{squashedPosition}, if that "
  38                 "property is set. "
  39                 "This can be used to make  a single line staff "
  40                 "demonstrating the rhythm of a melody.",
  41
  42                 /* create */ "",
  43                 /* accept */ "",
  44                 /* read */ "squashedPosition",
  45                 /* write */ "");