Merge branch 'master' of git://git.sv.gnu.org/lilypond

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

diff --git a/lily/break-align-engraver.cc b/lily/break-align-engraver.cc
index b3e74500d0c5ae102d14457ff3259c6a5335841c..8059200849770fcccc83500b5a00b35be19d9232 100644 (file)
--- a/lily/break-align-engraver.cc
+++ b/lily/break-align-engraver.cc
@@ -23,12 +23,14 @@ class Break_align_engraver : public Engraver
   Item *left_edge_;
 
   void add_to_group (SCM, Item *);
+  void create_alignment (Grob_info);
 protected:
   void stop_translation_timestep ();
   virtual void derived_mark () const;
 public:
   TRANSLATOR_DECLARATIONS (Break_align_engraver);
   DECLARE_ACKNOWLEDGER (break_aligned);
+  DECLARE_ACKNOWLEDGER (break_alignable);
 };
 
 void
@@ -53,6 +55,18 @@ Break_align_engraver::derived_mark () const
   scm_gc_mark (column_alist_);
 }
 
+void
+Break_align_engraver::acknowledge_break_alignable (Grob_info inf)
+{
+  if (!align_)
+    create_alignment (inf);
+
+  Grob *g = inf.grob ();
+
+  if (!g->get_parent (X_AXIS))
+    g->set_parent (align_, X_AXIS);
+}
+
 void
 Break_align_engraver::acknowledge_break_aligned (Grob_info inf)
 {
@@ -72,26 +86,30 @@ Break_align_engraver::acknowledge_break_aligned (Grob_info inf)
        return;
          
       if (!align_)
-       {
-         align_ = make_item ("BreakAlignment", SCM_EOL);
+       create_alignment (inf);
+
+      add_to_group (align_name, item);
+    }
+}
 
-         Context *origin = inf.origin_contexts (this)[0];
+void
+Break_align_engraver::create_alignment (Grob_info inf)
+{
+  align_ = make_item ("BreakAlignment", SCM_EOL);
 
-         Translator_group *tg = origin->implementation ();
-         Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
-         if (!random_source)
-           random_source = this;
+  Context *origin = inf.origin_contexts (this)[0];
 
-         /*
-           Make left edge appear to come from same context as clef/bar-line etc.
-         */
-         left_edge_ = random_source->make_item ("LeftEdge", SCM_EOL);
-         add_to_group (left_edge_->get_property ("break-align-symbol"),
-                       left_edge_);
-       }
+  Translator_group *tg = origin->implementation ();
+  Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
+  if (!random_source)
+    random_source = this;
 
-      add_to_group (align_name, item);
-    }
+  /*
+    Make left edge appear to come from same context as clef/bar-line etc.
+  */
+  left_edge_ = random_source->make_item ("LeftEdge", SCM_EOL);
+  add_to_group (left_edge_->get_property ("break-align-symbol"),
+               left_edge_);
 }
 
 void
@@ -119,6 +137,7 @@ Break_align_engraver::add_to_group (SCM align_name, Item *item)
   Axis_group_interface::add_element (group, item);
 }
 ADD_ACKNOWLEDGER (Break_align_engraver, break_aligned);
+ADD_ACKNOWLEDGER (Break_align_engraver, break_alignable);
 ADD_TRANSLATOR (Break_align_engraver,
                "Align grobs with corresponding @code{break-align-symbols} into "
                "groups, and order the groups according to @code{breakAlignOrder}. "