Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / custos.cc

diff --git a/lily/custos.cc b/lily/custos.cc
index 45f83c64dc90266ff8cd64d0c39d27f9d744972a..37aeb66f6b9202ed8db498f7dd5e3139fc547837 100644 (file)
--- a/lily/custos.cc
+++ b/lily/custos.cc
@@ -1,63 +1,69 @@
 /*
-  custos.cc -- implement Custos
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2000--2015 Juergen Reuter <reuter@ipd.uka.de>
 
-  (c) 2000--2004 Juergen Reuter <reuter@ipd.uka.de>
+  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/>.
 */
 
 /* TODO:
 
- - do not show if a clef change immediately follows in the next line
-
- - decide: do or do not print custos if the next line starts with a rest
+- do not show if a clef change immediately follows in the next line
 
+- decide: do or do not print custos if the next line starts with a rest
 */
 
+#include <cstdio>
+#include <cmath> // rint
+using namespace std;
 
-#include <stdio.h>
+#include "custos.hh"
 #include "direction.hh"
+#include "font-interface.hh"
+#include "international.hh"
+#include "item.hh"
+#include "note-head.hh"
 #include "staff-symbol-referencer.hh"
-#include "custos.hh"
-#include "stencil.hh"
 #include "warn.hh"
-#include "note-head.hh"
-#include "item.hh"
-#include "font-interface.hh"
-#include "math.h" // rint
 
-MAKE_SCHEME_CALLBACK (Custos,print,1);
+MAKE_SCHEME_CALLBACK (Custos, print, 1);
 SCM
 Custos::print (SCM smob)
 {
-  Item *me = (Item *)unsmob_grob (smob);
+  Item *me = (Item *)unsmob<Grob> (smob);
 
   SCM scm_style = me->get_property ("style");
-  String style;
-  if (ly_c_symbol_p (scm_style))
-    {
-      style = ly_symbol2string (scm_style);
-    }
+  string style;
+  if (scm_is_symbol (scm_style))
+    style = ly_symbol2string (scm_style);
   else
-    {
-      style = "mensural";
-    }
+    style = "mensural";
 
   /*
    * Shall we use a common custos font character regardless if on
    * staffline or not, or shall we use individual font characters
    * for both cases?
    */
-  bool adjust = true; 
+  bool adjust = true;
 
   int neutral_pos = robust_scm2int (me->get_property ("neutral-position"), 0);
-  Direction neutral_direction =
-    to_dir (me->get_property ("neutral-direction"));
+  Direction neutral_direction
+    = to_dir (me->get_property ("neutral-direction"));
 
   int pos = Staff_symbol_referencer::get_rounded_position (me);
-  int sz = Staff_symbol_referencer::line_count (me)-1;
 
-  String font_char = "custodes-" + style + "-";
+  string font_char = "custodes." + style + ".";
   if (pos < neutral_pos)
     font_char += "u";
   else if (pos > neutral_pos)
@@ -70,13 +76,9 @@ Custos::print (SCM smob)
     font_char += "d";
 
   if (adjust)
-    {
-      font_char += (((pos ^ sz) & 0x1) == 0) ? "1" : "0";
-    }
+    font_char += Staff_symbol_referencer::on_line (me, pos) ? "1" : "0";
   else
-    {
-      font_char += "2";
-    }
+    font_char += "2";
 
   Stencil stencil
     = Font_interface::get_default_font (me)->find_by_name (font_char);
@@ -85,22 +87,17 @@ Custos::print (SCM smob)
       me->warning (_f ("custos `%s' not found", font_char));
       return SCM_EOL;
     }
-  else
-    {
-      // add ledger lines
-      int pos = Staff_symbol_referencer::get_rounded_position (me);
-      int interspaces = Staff_symbol_referencer::line_count (me)-1;
-      if (abs (pos) - interspaces > 1)
-       {
-         Stencil ledger_lines =
-           Note_head::brew_ledger_lines (me, pos, interspaces,
-                                         stencil.extent (X_AXIS), 0, true);
-         stencil.add_stencil (ledger_lines);
-       }
-      return stencil.smobbed_copy ();
-    }
+
+  return stencil.smobbed_copy ();
 }
 
-ADD_INTERFACE (Custos, "custos-interface",
-  "A custos object.",
-  "style neutral-position neutral-direction");
+ADD_INTERFACE (Custos,
+               "A custos object.  @code{style} can have four valid values:"
+               " @code{mensural}, @code{vaticana}, @code{medicaea}, and"
+               " @code{hufnagel}.  @code{mensural} is the default style.",
+
+               /* properties */
+               "style "
+               "neutral-position "
+               "neutral-direction "
+              );