(process_acknowledged): don't create

[lilypond.git] / lily / gregorian-ligature.cc

diff --git a/lily/gregorian-ligature.cc b/lily/gregorian-ligature.cc
index 7b5cfc221a266f4786284578f9495adb507619f9..5047fa928b9ee22f062105e99c8f442ba6bad21c 100644 (file)
--- a/lily/gregorian-ligature.cc
+++ b/lily/gregorian-ligature.cc
@@ -1,21 +1,53 @@
-/*   
+/*
   gregorian-ligature.cc -- implement Gregorian_ligature
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2003--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
+
+#include "gregorian-ligature.hh"
+
 #include "grob.hh"
 
-class Gregorian_ligature {
-public:
-  static bool has_interface (Grob *);
-};
+void check_prefix (string name, int mask, int prefix_set, string *str)
+{
+  if (prefix_set & mask)
+    {
+      if (!str->empty ())
+       *str += ", ";
+      *str += name;
+    }
+}
 
+string
+Gregorian_ligature::prefixes_to_str (Grob *primitive)
+{
+  string str;
+  int prefix_set
+    = scm_to_int (primitive->get_property ("prefix-set"));
+  check_prefix ("virga", VIRGA, prefix_set, &str);
+  check_prefix ("stropha", STROPHA, prefix_set, &str);
+  check_prefix ("inclinatum", INCLINATUM, prefix_set, &str);
+  check_prefix ("auctum", AUCTUM, prefix_set, &str);
+  check_prefix ("descendens", DESCENDENS, prefix_set, &str);
+  check_prefix ("ascendens", ASCENDENS, prefix_set, &str);
+  check_prefix ("oriscus", ORISCUS, prefix_set, &str);
+  check_prefix ("quilisma", QUILISMA, prefix_set, &str);
+  check_prefix ("deminutum", DEMINUTUM, prefix_set, &str);
+  check_prefix ("cavum", CAVUM, prefix_set, &str);
+  check_prefix ("linea", LINEA, prefix_set, &str);
+  return str;
+}
 
 /*
-  CHECK ME -- does prefix-set come from here ? 
- */
+  CHECK ME -- does prefix-set come from here ?
+
+  In a way, yes.  Actually, prefix-set is a property that is written
+  by code of GregorianLigatureEngraver that is virtually invoked by a
+  subclass like VaticanaLigatureEngraver.  The property is lateron
+  read by the associated item class, such as VaticanaLigature.--jr
+*/
 ADD_INTERFACE (Gregorian_ligature, "gregorian-ligature-interface",
               "A gregorian ligature",
               "virga stropha inclinatum auctum descendens ascendens "