Method fractionToString

tools/qcustomplot.cpp:7580–7625

! \internal Takes the fraction given by \a numerator and \a denominator and returns a string representation. The result depends on the configured fraction style (\ref setFractionStyle). This method is used to format the numerical/fractional part when generating tick labels. It simplifies the passed fraction to an irreducible form using \ref simplifyFraction and factors out any inte

  any integer parts of the fraction (e.g. "10/4" becomes "2 1/2").
*/
QString QCPAxisTickerPi::fractionToString(int numerator, int denominator) const
{
  if (denominator == 0)
  {
    qDebug() << Q_FUNC_INFO << "called with zero denominator";
    return QString();
  }
  if (mFractionStyle == fsFloatingPoint) // should never be the case when calling this function
  {
    qDebug() << Q_FUNC_INFO << "shouldn't be called with fraction style fsDecimal";
    return QString::number(numerator/double(denominator)); // failsafe
  }
  int sign = numerator*denominator < 0 ? -1 : 1;
  numerator = qAbs(numerator);
  denominator = qAbs(denominator);
  
  if (denominator == 1)
  {
    return QString::number(sign*numerator);
  } else
  {
    int integerPart = numerator/denominator;
    int remainder = numerator%denominator;
    if (remainder == 0)
    {
      return QString::number(sign*integerPart);
    } else
    {
      if (mFractionStyle == fsAsciiFractions)
      {
        return QString(QLatin1String("%1%2%3/%4"))
            .arg(sign == -1 ? QLatin1String("-") : QLatin1String(""))
            .arg(integerPart > 0 ? QString::number(integerPart)+QLatin1String(" ") : QString(QLatin1String("")))
            .arg(remainder)
            .arg(denominator);
      } else if (mFractionStyle == fsUnicodeFractions)
      {
        return QString(QLatin1String("%1%2%3"))
            .arg(sign == -1 ? QLatin1String("-") : QLatin1String(""))
            .arg(integerPart > 0 ? QString::number(integerPart) : QLatin1String(""))
            .arg(unicodeFraction(remainder, denominator));
      }
    }
  }
  return QString();
}

/*! \internal