* lily/translator-scheme.cc (ly:translator-property): Remove.

[lilypond.git] / lily / pitch-squash-engraver.cc

diff --git a/lily/pitch-squash-engraver.cc b/lily/pitch-squash-engraver.cc
index 4961e70f19112469f3787417da59a46e4286c370..0ccf797d46a679f129b55a4dfb96130a990e4a64 100644 (file)
--- a/lily/pitch-squash-engraver.cc
+++ b/lily/pitch-squash-engraver.cc
@@ -1,46 +1,47 @@
-/*   
-  pitch-squash-grav.cc --  implement Pitch_squash_engraver
-  
+/*
+  pitch-squash-engraver.cc -- implement Pitch_squash_engraver
+
   source file of the GNU LilyPond music typesetter
-  
-  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
 #include "staff-symbol-referencer.hh"
 #include "note-head.hh"
 #include "rhythmic-head.hh"
 #include "engraver.hh"
 
-class Pitch_squash_engraver : public Engraver {
+class Pitch_squash_engraver : public Engraver
+{
 public:
-  TRANSLATOR_DECLARATIONS(Pitch_squash_engraver);
+  TRANSLATOR_DECLARATIONS (Pitch_squash_engraver);
   virtual void acknowledge_grob (Grob_info);
 };
 
-
 void
 Pitch_squash_engraver::acknowledge_grob (Grob_info i)
 {
   SCM newpos = get_property ("squashedPosition");
-  if (Note_head::has_interface (i.grob_))
+  if (scm_is_number (newpos)
+      && Note_head::has_interface (i.grob_))
     {
-      i.grob_->set_grob_property ("staff-position", newpos);
+      i.grob_->set_property ("staff-position", newpos);
     }
 }
 
-
-
-Pitch_squash_engraver::Pitch_squash_engraver()
+Pitch_squash_engraver::Pitch_squash_engraver ()
 {
 }
 
-ENTER_DESCRIPTION(Pitch_squash_engraver,
-/* descr */       "Treat all pitches as middle C.  Note that the notes move, but
-the locations of accidentals stay the same. 
-Set the position field of all note heads to zero. This useful for
-making a single line staff that demonstrates the rhythm of a melody.",
-/* creats*/       "",
-/* accepts */     "",
-/* acks  */      "note-head-interface",
-/* reads */       "squashedPosition",
-/* write */       "");
+ADD_TRANSLATOR (Pitch_squash_engraver,
+               /* descr */
+               "Set the vertical position of noteheads to "
+               "@code{squashedPosition}, if that "
+               "property is set. "
+               "This can be used to make  a single line staff "
+               "demonstrating the rhythm of a melody.",
+
+               /* creats*/ "",
+               /* accepts */ "",
+               /* acks  */ "note-head-interface",
+               /* reads */ "squashedPosition",
+               /* write */ "");