Issue 4974/1: Add output-attributes grob property

[lilypond.git] / lily / vertical-align-engraver.cc

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index d28d0d74a3b121e2c27828d92732920b36f12333..0226173a2e115ec81d153212a5c3317cee6755c2 100644 (file)
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -37,7 +37,7 @@ class Vertical_align_engraver : public Engraver
 
 public:
   TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
-  DECLARE_ACKNOWLEDGER (axis_group);
+  void acknowledge_axis_group (Grob_info);
 
 protected:
   virtual void derived_mark () const;
@@ -48,7 +48,12 @@ protected:
   bool top_level_;
 };
 
-ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+void
+Vertical_align_engraver::boot ()
+{
+  ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+}
+
 ADD_TRANSLATOR (Vertical_align_engraver,
                 /* doc */
                 "Catch groups (staves, lyrics lines, etc.) and stack them"
@@ -120,7 +125,7 @@ Vertical_align_engraver::qualifies (Grob_info i) const
 {
   int sz = i.origin_contexts ((Translator *)this).size ();
 
-  return sz > 0 && Axis_group_interface::has_interface (i.grob ())
+  return sz > 0 && has_interface<Axis_group_interface> (i.grob ())
          && !i.grob ()->get_parent (Y_AXIS)
          && !to_boolean (i.grob ()->get_property ("no-alignment"))
          && Axis_group_interface::has_axis (i.grob (), Y_AXIS);