116 lines
3 KiB
C++
116 lines
3 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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//
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// Copyright (C) 2002-2011 Werner Schweer
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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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// as published by the Free Software Foundation and appearing in
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// the file LICENCE.GPL
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//=============================================================================
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#ifndef __SPATIUM_H__
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#define __SPATIUM_H__
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namespace Ms {
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//---------------------------------------------------------
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// Spatium
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// - a unit of measure
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// - the distance between two note lines
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// - used for many layout items
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//---------------------------------------------------------
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class Spatium {
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qreal _val;
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public:
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constexpr Spatium() : _val(0.0) {}
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explicit Spatium(qreal v) { _val = v; }
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constexpr qreal val() const { return _val; }
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bool operator>(const Spatium& a) const { return _val > a._val; }
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bool operator<(const Spatium& a) const { return _val < a._val; }
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bool operator==(const Spatium& a) const { return _val == a._val; }
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bool operator!=(const Spatium& a) const { return _val != a._val; }
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bool isZero() const { return _val == 0.0; }
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Spatium& operator+=(const Spatium& a) {
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_val += a._val;
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return *this;
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}
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Spatium& operator-=(const Spatium& a) {
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_val -= a._val;
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return *this;
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}
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Spatium& operator/=(qreal d) {
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_val /= d;
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return *this;
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}
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qreal operator/(const Spatium& b) {
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return _val / b._val;
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}
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Spatium& operator*=(int d) {
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_val *= d;
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return *this;
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}
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Spatium& operator*=(qreal d) {
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_val *= d;
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return *this;
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}
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Spatium operator-() const { return Spatium(-_val); }
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operator QVariant() const { return QVariant::fromValue(*this); }
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static double toDouble(const Spatium& v) { return v._val; }
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};
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inline Spatium operator+(const Spatium& a, const Spatium& b)
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{
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Spatium r(a);
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r += b;
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return r;
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}
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inline Spatium operator-(const Spatium& a, const Spatium& b)
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{
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Spatium r(a);
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r -= b;
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return r;
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}
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inline Spatium operator/(const Spatium& a, qreal b)
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{
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Spatium r(a);
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r /= b;
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return r;
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}
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inline Spatium operator*(const Spatium& a, int b)
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{
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Spatium r(a);
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r *= b;
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return r;
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}
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inline Spatium operator*(int a, const Spatium& b)
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{
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Spatium r(b);
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r *= a;
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return r;
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}
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inline Spatium operator*(const Spatium& a, qreal b)
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{
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Spatium r(a);
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r *= b;
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return r;
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}
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inline Spatium operator*(qreal a, const Spatium& b)
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{
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Spatium r(b);
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r *= a;
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return r;
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}
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} // namespace Ms
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Q_DECLARE_METATYPE(Ms::Spatium);
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#endif
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