1f9ccfcdce
git-subtree-dir: libmscore git-subtree-mainline:412ca45401git-subtree-split:6047361bd0
85 lines
3.2 KiB
C++
85 lines
3.2 KiB
C++
//=============================================================================
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// MusE Score
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// Linux Music Score Editor
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// $Id:$
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//
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// Copyright (C) 2009 Werner Schweer and others
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//=============================================================================
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#ifndef __FRACTION_H__
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#define __FRACTION_H__
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//---------------------------------------------------------
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// Fraction
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//---------------------------------------------------------
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class Fraction {
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int _numerator;
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int _denominator;
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public:
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Fraction(int z = 0, int n = 1);
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int numerator() const { return _numerator; }
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int denominator() const { return _denominator; }
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int& rnumerator() { return _numerator; }
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int& rdenominator() { return _denominator; }
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void setNumerator(int v) { _numerator = v; }
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void setDenominator(int v) { _denominator = v; }
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void set(int z, int n) { _numerator = z; _denominator = n; }
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bool isZero() const { return _numerator == 0; }
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bool isValid() const { return _denominator != 0; }
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void reduce();
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Fraction reduced() const;
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// check if two fractions are identical (numerator & denominator)
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// == operator checks for equal value:
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bool identical(const Fraction& v) const {
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return (_numerator == v._numerator) && (_denominator == v._denominator);
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}
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int ticks() const;
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static Fraction fromTicks(int v);
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Fraction& operator+=(const Fraction&);
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Fraction& operator-=(const Fraction&);
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Fraction& operator*=(const Fraction&);
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Fraction& operator*=(int);
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Fraction& operator/=(const Fraction&);
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Fraction& operator/=(int);
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Fraction operator+(const Fraction& v) const { return Fraction(*this) += v; }
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Fraction operator-(const Fraction& v) const { return Fraction(*this) -= v; }
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Fraction operator*(const Fraction& v) const { return Fraction(*this) *= v; }
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Fraction operator*(int v) const { return Fraction(*this) *= v; }
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Fraction operator/(const Fraction& v) const { return Fraction(*this) /= v; }
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Fraction operator/(int v) const { return Fraction(*this) /= v; }
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bool operator<(const Fraction&) const;
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bool operator<=(const Fraction&) const;
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bool operator>=(const Fraction&) const;
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bool operator>(const Fraction&) const;
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bool operator==(const Fraction&) const;
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bool operator!=(const Fraction&) const;
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QString print() const { return QString("%1/%2").arg(_numerator).arg(_denominator); }
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};
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Q_DECLARE_METATYPE(Fraction)
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#endif
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