Fix piano roll to use the same octave numbering as the verbose canvas cursor (#4015).

git-svn-id: svn://localhost/ardour2/branches/3.0@9458 d708f5d6-7413-0410-9779-e7cbd77b26cf

diff --git a/gtk2_ardour/piano_roll_header.cc b/gtk2_ardour/piano_roll_header.cc
index 4bb8250fea2c38f2f223a23b5ea12393782a0574..02d656d69863efceed4831a8d2416f5ac32a2da0 100644 (file)
--- a/gtk2_ardour/piano_roll_header.cc
+++ b/gtk2_ardour/piano_roll_header.cc
@@ -445,7 +445,7 @@ PianoRollHeader::on_expose_event (GdkEventExpose* ev)
                        double y = floor(_view.note_to_y(i)) - 0.5f;
                        double note_height = floor(_view.note_to_y(i - 1)) - y;
 
-                       int cn = i / 12;
+                       int cn = i / 12 - 1;
                        s << "C" << cn;
 
                        //cr->get_text_extents(s.str(), te);