Fix #1490: Allow page labels on loose columns.

[lilypond.git] / lily / system.cc

diff --git a/lily/system.cc b/lily/system.cc
index 3b3daa0216ef163325d6bfc14f38632400f39264..19279d7cd061e7b0c309f96c2a6f74b67f236e95 100644 (file)
--- a/lily/system.cc
+++ b/lily/system.cc
@@ -250,10 +250,16 @@ System::break_into_pieces (vector<Column_x_positions> const &breaking)
          c[j]->translate_axis (breaking[i].config_[j], X_AXIS);
          dynamic_cast<Paper_column *> (c[j])->set_system (system);
          /* collect the column labels */
-         SCM col_labels = c[j]->get_property ("labels");
-         if (scm_is_pair (col_labels))
-           system_labels = scm_append (scm_list_2 (col_labels, system_labels));
+         collect_labels (c[j], &system_labels);
        }
+      /*
+       Collect labels from any loose columns too: theses will be set on
+       an empty bar line or a column which is otherwise unused mid-line
+      */
+      vector<Grob *> loose (breaking[i].loose_cols_);
+      for (vsize j = 0; j < loose.size (); j++)
+       collect_labels (loose[j], &system_labels);
+
       system->set_property ("labels", system_labels);
 
       set_loose_columns (system, &breaking[i]);
@@ -261,6 +267,14 @@ System::break_into_pieces (vector<Column_x_positions> const &breaking)
     }
 }
 
+void
+System::collect_labels (Grob const *col, SCM *labels)
+{
+  SCM col_labels = col->get_property ("labels");
+  if (scm_is_pair (col_labels))
+    *labels = scm_append (scm_list_2 (col_labels, *labels));
+}
+
 void
 System::add_column (Paper_column *p)
 {