X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fenclosing-bracket.cc;h=4bb732efdc5e02bfbb0096572d63f3065d4b000c;hb=ead2bc50eefa1caf1f375488e11f93ee504dbaf2;hp=81a292a2ecbefb208cf0f80d0fbdde609de94964;hpb=95ab85e47fa4b6f86f5f5aa73bbb826f8c79c8eb;p=lilypond.git

diff --git a/lily/enclosing-bracket.cc b/lily/enclosing-bracket.cc
index 81a292a2ec..4bb732efdc 100644
--- a/lily/enclosing-bracket.cc
+++ b/lily/enclosing-bracket.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
 */
 
@@ -15,20 +15,18 @@
 
 struct Enclosing_bracket
 {
-  static bool has_interface (Grob*);
+  DECLARE_GROB_INTERFACE ();
   
 public:
-  DECLARE_SCHEME_CALLBACK(print, (SCM));
-  DECLARE_SCHEME_CALLBACK(width, (SCM));
+  DECLARE_SCHEME_CALLBACK (print, (SCM));
+  DECLARE_SCHEME_CALLBACK (width, (SCM));
 };
 
 
-ADD_INTERFACE(Enclosing_bracket,
-	      "enclosing-bracket-interface",
-	      
+ADD_INTERFACE (Enclosing_bracket,
 	      "Brackets alongside bass figures.",
 	      
-	      /* props */
+	      /* properties */
 	      "bracket-flare "
 	      "edge-height "
 	      "elements "
@@ -86,7 +84,11 @@ Enclosing_bracket::print (SCM grob)
 
   Grob *common_x = common_refpoint_of_array (elements, me, X_AXIS); 
   Interval xext = Axis_group_interface::relative_group_extent (elements, common_x, X_AXIS);
-
+  if (xext.is_empty ())
+    {
+      me->programming_error ("elements have no X extent.");
+      xext = Interval (0, 0);
+    }
 
   Stencil left_br = Horizontal_bracket::make_enclosing_bracket (me, me, elements,
 								Y_AXIS, LEFT);