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94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/* This file is part of the KDE libraries
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Copyright (C) 2021 Ivailo Monev <xakepa10@gmail.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2, as published by the Free Software Foundation.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "kunitconversion.h"
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#include "kdebug.h"
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#include <qmath.h>
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class KTemperaturePrivate {
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public:
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KTemperaturePrivate(const double number, const QString &unit);
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double m_number;
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QString m_unit;
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KTemperature::KTempUnit m_tempunit;
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};
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KTemperaturePrivate::KTemperaturePrivate(const double number, const QString &unit)
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: m_number(number),
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m_tempunit(KTemperature::Invalid)
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{
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if (unit == QString::fromUtf8("°C") || unit == QLatin1String("C") || unit == QLatin1String("Celsius")) {
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m_tempunit = KTemperature::Celsius;
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m_unit = QString::fromUtf8("°C");
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} else if (unit == QString::fromUtf8("°F") || unit == QLatin1String("F") || unit == QLatin1String("Fahrenheit")) {
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m_tempunit = KTemperature::Fahrenheit;
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m_unit = QString::fromUtf8("°F");
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} else {
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kDebug() << "invalid unit" << unit;
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m_unit = QLatin1String("Unknown");
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}
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}
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KTemperature::KTemperature(const double number, const QString &unit)
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: d(new KTemperaturePrivate(number, unit))
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{
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}
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KTemperature::~KTemperature()
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{
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delete d;
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}
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double KTemperature::number() const
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{
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return d->m_number;
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}
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QString KTemperature::unit() const
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{
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return d->m_unit;
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}
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QString KTemperature::toString() const
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{
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return QString::fromLatin1("%1 %2").arg(QString::number(d->m_number), d->m_unit);
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}
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double KTemperature::convertTo(const KTempUnit unit) const
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{
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static const double celsius_fahrenheit_ratio = 33.8;
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if (unit == d->m_tempunit) {
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return d->m_number;
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}
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if (d->m_tempunit == KTemperature::Fahrenheit && unit == KTemperature::Celsius) {
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return (d->m_number / celsius_fahrenheit_ratio);
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} else if (d->m_tempunit == KTemperature::Celsius && unit == KTemperature::Fahrenheit) {
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return (d->m_number * celsius_fahrenheit_ratio);
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}
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return 0.0;
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}
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double KTemperature::round(const double number, const uint digits)
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{
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const double poweroften = qPow(10, digits);
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return qRound(number * poweroften) / poweroften;
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}
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