mirror of
https://github.com/KDE/latte-dock.git
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7bdf1ccb23
While compiling Latte-Dock, i got the following error:
/data/latte-dock/src/latte-dock-git/app/iconitem.cpp:393:46: required from here
/data/latte-dock/src/latte-dock-git/app/../liblattedock/extras.h:69:20: error: call of overloaded ‘abs(double)’ is ambiguous
return std::abs(x - y) < std::numeric_limits<T>::epsilon() *
std::abs(x + y) * ulp
In order to solve this error, i have to include `cmath`.
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
#ifndef EXTRAS_H
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#define EXTRAS_H
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#include <QObject>
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#include <QString>
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#include <QStringBuilder>
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#include <QRect>
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#include <QMetaEnum>
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#include <QMetaType>
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#include <Plasma>
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#include <type_traits>
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#include <numeric>
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#include <memory>
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#include <cmath>
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#if __GLIBCXX__ <= 20150623
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namespace std {
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template<class T, class... Args>
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unique_ptr<T> make_unique(Args &&... args)
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{
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return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
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}
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}
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#endif
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/*!
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* @brief convert a QRect to a QString with format `(<x>, <y>) <width>x<height>`
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*/
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inline QString qRectToStr(const QRect &r)
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{
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return "(" % QString::number(r.x()) % ", " % QString::number(r.y()) % ") "
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% QString::number(r.width()) % "x" % QString::number(r.height());
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}
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/*!
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* @brief convert a `Q_ENUM` to c-string
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*/
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template<typename EnumType>
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inline const char *qEnumToStr(EnumType value)
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{
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return QMetaEnum::fromType<EnumType>().valueToKey(value);
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}
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/*!
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* @brief convert a `Q_ENUMS` of `Plasma::Types::Location` to c-string
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*/
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inline const char *qEnumToStr(Plasma::Types::Location Enum)
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{
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static const int Index = Plasma::Types::staticMetaObject.indexOfEnumerator("Location");
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return Plasma::Types::staticMetaObject.enumerator(Index).valueToKey(Enum);
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}
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/*!
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* @brief convert a `Q_ENUMS` of `Plasma::Types::FormFactor` to c-string
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*/
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inline const char *qEnumToStr(Plasma::Types::FormFactor Enum)
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{
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static const int Index = Plasma::Types::staticMetaObject.indexOfEnumerator("FormFactor");
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return Plasma::Types::staticMetaObject.enumerator(Index).valueToKey(Enum);
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}
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/*!
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* @brief machine epsilon
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*/
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template<class T>
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typename std::enable_if < !std::is_integral<T>(), bool >::type almost_equal(T x, T y, int ulp)
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{
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return std::abs(x - y) < std::numeric_limits<T>::epsilon() * std::abs(x + y) * ulp
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|| std::abs(x - y) < std::numeric_limits<T>::min();
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}
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#endif // EXTRAS_H
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