lily/include/duration.hh

   1 /*
   2   duration.hh -- declare Duration
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997--2007 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #ifndef DURATION_HH
  10 #define DURATION_HH
  11
  12 #include "moment.hh"
  13
  14 /**
  15    A musical duration.
  16 */
  17 struct Duration
  18 {
  19 public:
  20
  21   Duration ();
  22   Duration (int, int);
  23   Duration (Rational, bool scale);
  24   string to_string () const;
  25
  26   Duration compressed (Rational) const;
  27   Rational get_length () const;
  28   Rational factor () const { return factor_; }
  29   int duration_log () const;
  30   int dot_count () const;
  31
  32   static int compare (Duration const &, Duration const &);
  33
  34   DECLARE_SCHEME_CALLBACK (less_p, (SCM a, SCM b));
  35   DECLARE_SIMPLE_SMOBS (Duration);
  36
  37 private:
  38   /// Logarithm of the base duration.
  39   int durlog_;
  40   int dots_;
  41
  42   Rational factor_;
  43 };
  44
  45 INSTANTIATE_COMPARE (Duration, Duration::compare);
  46 DECLARE_UNSMOB (Duration, duration);
  47
  48 #endif // DURATION_HH
  49