Run `make grand-replace'.

[lilypond.git] / lily / enclosing-bracket.cc

diff --git a/lily/enclosing-bracket.cc b/lily/enclosing-bracket.cc
index 2e10d71fdf60ea1bb42c3483c53dc76e4ac6df87..69c3adcc641c806531293c7d9377643b17d3d99b 100644 (file)
--- 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--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
 */
 
@@ -15,36 +15,68 @@
 
 struct Enclosing_bracket
 {
-  static bool has_interface (Grob*);
+  DECLARE_GROB_INTERFACE ();
   
 public:
-  DECLARE_SCHEME_CALLBACK(print, (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 "
-             "shorten-pair "
              "edge-height "
+             "elements "
              "padding "
+             "shorten-pair "
              "thickness "
-             "elements "
              );
 
 /* ugh: should make bracket interface. */
 
 
+MAKE_SCHEME_CALLBACK (Enclosing_bracket, width, 1);
+SCM
+Enclosing_bracket::width (SCM grob)
+{
+  /*
+     UGH. cut & paste code.
+  */
+  Grob *me = unsmob_grob (grob);
+  extract_grob_set (me, "elements", elements);
+  if (elements.empty ())
+    {
+      me->suicide ();
+      return SCM_EOL;
+    }
+
+  Grob *common_x = common_refpoint_of_array (elements, me, X_AXIS); 
+  Interval xext = Axis_group_interface::relative_group_extent (elements, common_x, X_AXIS);
+
+  Stencil left_br = Horizontal_bracket::make_bracket (me, 10.0, Y_AXIS, LEFT);
+  Stencil right_br = Horizontal_bracket::make_bracket (me, 10.0, Y_AXIS, LEFT);
+
+
+  xext.widen (robust_scm2double (me->get_property ("padding"), 0.25));
+  left_br.translate_axis (xext[LEFT], X_AXIS);
+  right_br.translate_axis (xext[RIGHT], X_AXIS);
+
+  left_br.add_stencil (right_br);
+  left_br.translate_axis (-me->relative_coordinate (common_x, X_AXIS), X_AXIS);
+
+  return ly_interval2scm (left_br.extent (X_AXIS));
+}
+
 MAKE_SCHEME_CALLBACK (Enclosing_bracket, print, 1);
 SCM
 Enclosing_bracket::print (SCM grob)
 {
   Grob *me = unsmob_grob (grob);
   extract_grob_set (me, "elements", elements);
-  if (elements.is_empty ())
+  if (elements.empty ())
     {
       me->suicide ();
       return SCM_EOL;
@@ -52,7 +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);