importmidi_fraction.h

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#ifndef IMPORTMIDI_FRACTION_H
#define IMPORTMIDI_FRACTION_H

#include "libmscore/fraction.h"


namespace Ms {

class ReducedFraction
      {
   public:
      ReducedFraction();
      ReducedFraction(int z, int n);
      explicit ReducedFraction(const Fraction &);

      Fraction fraction() const { return Fraction(numerator_, denominator_); }
      int numerator() const { return numerator_; }
      int denominator() const { return denominator_; }

      static ReducedFraction fromTicks(int ticks);
      ReducedFraction reduced() const;
      ReducedFraction absValue() const { return ReducedFraction(qAbs(numerator_), qAbs(denominator_)); }
      double toDouble() const { return numerator_ * 1.0 / denominator_; }
      int ticks() const;
      void reduce();
      bool isIdenticalTo(const ReducedFraction &f) const
                        { return (f.numerator_ == numerator_ && f.denominator_ == denominator_); }

      ReducedFraction& operator+=(const ReducedFraction&);
      ReducedFraction& operator-=(const ReducedFraction&);
      ReducedFraction& operator*=(const ReducedFraction&);
      ReducedFraction& operator*=(int);
      ReducedFraction& operator/=(const ReducedFraction&);
      ReducedFraction& operator/=(int);

      ReducedFraction operator+(const ReducedFraction& v) const { return ReducedFraction(*this) += v; }
      ReducedFraction operator-(const ReducedFraction& v) const { return ReducedFraction(*this) -= v; }
      ReducedFraction operator*(const ReducedFraction& v) const { return ReducedFraction(*this) *= v; }
      ReducedFraction operator*(int v)                    const { return ReducedFraction(*this) *= v; }
      ReducedFraction operator/(const ReducedFraction& v) const { return ReducedFraction(*this) /= v; }
      ReducedFraction operator/(int v)                    const { return ReducedFraction(*this) /= v; }

      bool operator<(const ReducedFraction&) const;
      bool operator<=(const ReducedFraction&) const;
      bool operator>=(const ReducedFraction&) const;
      bool operator>(const ReducedFraction&) const;
      bool operator==(const ReducedFraction&) const;
      bool operator!=(const ReducedFraction&) const;

   private:
      void preventOverflow();

      int numerator_;
      int denominator_;
      };

ReducedFraction toMuseScoreTicks(int tick, int oldDivision, bool isDivisionInTps);

} // namespace Ms


#endif // IMPORTMIDI_FRACTION_H