hdr/directional-spanner.hh

   1 /*
   2   directional-spanner.hh -- part of LilyPond
   3
   4   (c) 1996,97 Han-Wen Nienhuys
   5 */
   6
   7 #ifndef DIRECTIONALSPANNER_HH
   8 #define DIRECTIONALSPANNER_HH
   9
  10 #include "spanner.hh"
  11
  12 /// a spanner which can be pointing "up" or "down"
  13 struct Directional_spanner : Spanner{
  14
  15     /// -1 below heads, +1 above heads.
  16     int dir_i_;
  17
  18     /// offset of "center" relative to left-column/0-pos of staff
  19     virtual Offset center() const=0;
  20     virtual void set_default_dir()=0;
  21     Directional_spanner();
  22
  23 };
  24
  25 #endif // DIRECTIONALSPANNER_HH
  26