1 files changed, 126 insertions, 0 deletions
diff --git a/src/datablocks/mixednumber.h b/src/datablocks/mixednumber.h
new file mode 100644
index 0000000..34a0f8b
--- /dev/null
+++ b/src/datablocks/mixednumber.h
@@ -0,0 +1,126 @@
+/***************************************************************************
+*   Copyright (C) 2003 by                                                 *
+*   Jason Kivlighn ([email protected])                                  *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+***************************************************************************/
+
+#ifndef MIXEDNUMBER_H
+#define MIXEDNUMBER_H
+
+#include <tqstring.h>
+
+/** remove any extra zeros on the end of the string and the decimal if a whole number */
+TQString beautify( const TQString &num );
+
+class TDELocale;
+
+/** A class to hold and manipulate a mixed number.
+  * @author Jason Kivlighn
+  */
+class MixedNumber
+{
+public:
+	MixedNumber( int whole, int numerator, int denominator );
+
+	/** Create a mixed number from the given @param decimal.  This uses a method that will
+	  * approximate the actual fraction with precision equal to @param precision.
+	  * The closer @param precision is to zero without being zero, the more precisely
+	  * it will try to approximate the fraction.
+	  */
+	MixedNumber( double decimal, double precision = 1e-6 );
+
+	/** Creates a mixed number with an initial value of zero. */
+	MixedNumber();
+
+	~MixedNumber();
+
+	MixedNumber& operator+=( const MixedNumber & );
+	MixedNumber& operator+=( double );
+	bool operator!=( const MixedNumber &fraction );
+	bool operator>( double d )
+	{
+		return ( toDouble() > d );
+	}
+
+	enum Format { DecimalFormat, MixedNumberFormat };
+
+	/** The input as a decimal. */
+	double toDouble() const;
+
+	/** Returns the fraction as a string */
+	TQString toString( Format = MixedNumberFormat, bool locale_aware = true ) const;
+
+	/** The whole part of the input */
+	int whole() const
+	{
+		return m_whole;
+	}
+
+	/** The numerator of the fractional part of the input. */
+	int numerator() const
+	{
+		return m_numerator;
+	}
+
+	/** The denominator of the fractional part of the input. */
+	int denominator() const
+	{
+		return m_denominator;
+	}
+
+	void setNumerator( int n )
+	{
+		m_numerator = n;
+	}
+	void setDenominator( int d )
+	{
+		m_denominator = d;
+	}
+
+	/** Ensure that the fraction is simplified to its lowest terms. */
+	void simplify();
+
+	/** Parses the given TQString as a mixed number.  The input can be
+	  * expressed as a mixed number in the form "a b/c", or as a decimal.
+	  */
+	static MixedNumber fromString( const TQString &input, bool *ok = 0, bool locale_aware = true );
+
+private:
+	static int getNumerator( const TQString &input, int space_index, int slash_index, bool *ok );
+	static int getDenominator( const TQString &input, int slash_index, bool *ok );
+
+	int gcd( int, int );
+
+	int m_whole;
+	int m_numerator;
+	int m_denominator;
+
+	TDELocale *locale;
+};
+
+inline const MixedNumber operator+( const MixedNumber &mn1, const MixedNumber &mn2 )
+{
+	MixedNumber tmp = mn1;
+	tmp += mn2;
+	return tmp;
+}
+
+
+inline const MixedNumber operator+( double d, const MixedNumber &mn )
+{
+	MixedNumber tmp = mn;
+	tmp += d;
+	return tmp;
+}
+
+inline const MixedNumber operator+( const MixedNumber &mn, double d )
+{
+	return operator+(d,mn);
+}
+
+
+#endif //MIXEDNUMBER_H