source file of the GNU LilyPond music typesetter
- (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
struct Enclosing_bracket
{
- static bool has_interface (Grob*);
+ DECLARE_GROB_INTERFACE();
public:
DECLARE_SCHEME_CALLBACK(print, (SCM));
ADD_INTERFACE(Enclosing_bracket,
- "enclosing-bracket-interface",
"Brackets alongside bass figures.",
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);