Web-ja: update introduction

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

diff --git a/lily/pitch-squash-engraver.cc b/lily/pitch-squash-engraver.cc
index 19cdc5736d4f0b293f880f7932038ffdf936db5c..a5ccfa483ea70269f9c0c286abc52d2b04e474d5 100644 (file)
--- a/lily/pitch-squash-engraver.cc
+++ b/lily/pitch-squash-engraver.cc
@@ -1,24 +1,69 @@
-/*   
-  pitch-squash-grav.cc --  implement Pitch_squash_engraver
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
-
-#include "pitch-squash-engraver.hh"
+/*
+  This file is part of LilyPond, the GNU music typesetter.
+
+  Copyright (C) 1997--2015 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"
+
+#include "staff-symbol-referencer.hh"
 #include "note-head.hh"
+#include "rhythmic-head.hh"
+#include "grob.hh"
+
+class Pitch_squash_engraver : public Engraver
+{
+public:
+  TRANSLATOR_DECLARATIONS (Pitch_squash_engraver);
+  void acknowledge_note_head (Grob_info);
+};
 
 void
-Pitch_squash_engraver::acknowledge_element (Score_element_info i)
+Pitch_squash_engraver::acknowledge_note_head (Grob_info i)
 {
-  if (Note_head *nh = dynamic_cast<Note_head *> (i.elem_l_))
-    {
-      nh->position_i_  =0;
-    }
+  SCM newpos = get_property ("squashedPosition");
+  if (scm_is_number (newpos))
+    i.grob ()->set_property ("staff-position", newpos);
 }
 
-ADD_THIS_TRANSLATOR (Pitch_squash_engraver);
+Pitch_squash_engraver::Pitch_squash_engraver (Context *c)
+  : Engraver (c)
+{
+}
+
+#include "translator.icc"
+void
+Pitch_squash_engraver::boot ()
+{
+  ADD_ACKNOWLEDGER (Pitch_squash_engraver, note_head);
+}
+
+ADD_TRANSLATOR (Pitch_squash_engraver,
+                /* doc */
+                "Set the vertical position of note heads to"
+                " @code{squashedPosition}, if that property is set.  This can"
+                " be used to make a single-line staff demonstrating the"
+                " rhythm of a melody.",
+
+                /* create */
+                "",
 
+                /* read */
+                "squashedPosition ",
 
+                /* write */
+                ""
+               );