- String key;
- internal_print (me, &key);
-
- int k = fm->name_to_index (key);
- if (k >= 0)
- {
- Box b = fm->get_indexed_char (k);
- Offset wxwy = fm->attachment_point (key);
- Interval v = b[a];
- if (!v.is_empty ())
- return 2 * (wxwy[a] - v.center ()) / v.length ();
- }
+ Real ss = Staff_symbol::staff_space (staff);
+ Interval lines = Staff_symbol::line_span (staff) * (ss / 2.0);
+ Real my_pos = Staff_symbol_referencer::get_position (me) * ss / 2.0;
+ Interval my_ext = me->extent (me, Y_AXIS) + my_pos;
+
+ // The +1 and -1 come from the fact that we only want to add
+ // the interval between the note and the first ledger line, not
+ // the whole interval between the note and the staff.
+ Interval iv (min (0.0, lines[UP] - my_ext[DOWN] + 1),
+ max (0.0, lines[DOWN] - my_ext[UP] - 1));
+ return ly_interval2scm (iv);