2003 -> 2004

[lilypond.git] / lily / system-start-delimiter-engraver.cc

diff --git a/lily/system-start-delimiter-engraver.cc b/lily/system-start-delimiter-engraver.cc
index 682cf4f069a18cb0a7c5de9eaf29d13c17073cc0..3e672d0c95f560da88694848266a160ba7ebac14 100644 (file)
--- a/lily/system-start-delimiter-engraver.cc
+++ b/lily/system-start-delimiter-engraver.cc
@@ -3,7 +3,7 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
@@ -23,7 +23,7 @@ public:
 protected:
   Spanner * delim_;
   virtual void acknowledge_grob (Grob_info);
-  virtual void initialize ();
+  virtual void process_music ();
   virtual void finalize ();
 };
 
@@ -56,7 +56,7 @@ System_start_delimiter_engraver::acknowledge_grob (Grob_info inf)
        {
          inf.grob_->translate_axis ( -0.8, X_AXIS); // ugh
          inf.grob_->set_grob_property ("arch-height",
-           gh_double2scm(gh_scm2double(inf.grob_->get_grob_property
+                                      gh_double2scm (gh_scm2double(inf.grob_->get_grob_property
                                        ("arch-height"))+0.5));
        }
     }
@@ -68,26 +68,31 @@ System_start_delimiter_engraver::System_start_delimiter_engraver ()
 }
 
 void
-System_start_delimiter_engraver::initialize ()
+System_start_delimiter_engraver::process_music ()
 {
-  SCM delim_name =get_property ("systemStartDelimiter");
-  delim_ = new Spanner (internal_get_property (delim_name));
+  if (!delim_)
+    {
+      SCM delim_name =get_property ("systemStartDelimiter");
+      delim_ = internal_make_spanner (delim_name);
 
-  delim_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
-  announce_grob (delim_, SCM_EOL);
+      delim_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+      announce_grob (delim_, SCM_EOL);
+    }
 }
-
 void
 System_start_delimiter_engraver::finalize ()
 {
-  delim_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
-  typeset_grob (delim_);
+  if (delim_)
+    {
+      delim_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
+      typeset_grob (delim_);
+    }
 }
 
 ENTER_DESCRIPTION(System_start_delimiter_engraver,
 /* descr */       "Creates a system start delimiter (ie. SystemStart@{Bar,Brace,Bracket@} spanner",
 /* creats*/       "SystemStartBar SystemStartBrace SystemStartBracket",
-/* accepts */     "general-music",
+/* accepts */     "",
 /* acks  */      "system-start-delimiter-interface staff-symbol-interface",
 /* reads */       "systemStartDelimiter",
 /* write */       "");