diff options
Diffstat (limited to 'src/corelib/tools/qmargins.h')
| -rw-r--r-- | src/corelib/tools/qmargins.h | 74 |
1 files changed, 46 insertions, 28 deletions
diff --git a/src/corelib/tools/qmargins.h b/src/corelib/tools/qmargins.h index 2d494f4417..3b29860d66 100644 --- a/src/corelib/tools/qmargins.h +++ b/src/corelib/tools/qmargins.h @@ -4,10 +4,16 @@ #ifndef QMARGINS_H #define QMARGINS_H +#include <QtCore/qcompare.h> #include <QtCore/qnamespace.h> +#include <QtCore/q20type_traits.h> +#include <QtCore/q23utility.h> + QT_BEGIN_NAMESPACE +QT_ENABLE_P0846_SEMANTICS_FOR(get) + class QMarginsF; /***************************************************************************** @@ -49,34 +55,29 @@ private: int m_right; int m_bottom; - friend constexpr inline bool operator==(const QMargins &m1, const QMargins &m2) noexcept - { - return - m1.m_left == m2.m_left && - m1.m_top == m2.m_top && - m1.m_right == m2.m_right && - m1.m_bottom == m2.m_bottom; - } - - friend constexpr inline bool operator!=(const QMargins &m1, const QMargins &m2) noexcept + friend constexpr bool comparesEqual(const QMargins &lhs, const QMargins &rhs) noexcept { - return !(m1 == m2); + return lhs.m_left == rhs.m_left + && lhs.m_top == rhs.m_top + && lhs.m_right == rhs.m_right + && lhs.m_bottom == rhs.m_bottom; } + Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QMargins) template <std::size_t I, typename M, std::enable_if_t<(I < 4), bool> = true, - std::enable_if_t<std::is_same_v<std::decay_t<M>, QMargins>, bool> = true> + std::enable_if_t<std::is_same_v<q20::remove_cvref_t<M>, QMargins>, bool> = true> friend constexpr decltype(auto) get(M &&m) noexcept { if constexpr (I == 0) - return (std::forward<M>(m).m_left); + return q23::forward_like<M>(m.m_left); else if constexpr (I == 1) - return (std::forward<M>(m).m_top); + return q23::forward_like<M>(m.m_top); else if constexpr (I == 2) - return (std::forward<M>(m).m_right); + return q23::forward_like<M>(m.m_right); else if constexpr (I == 3) - return (std::forward<M>(m).m_bottom); + return q23::forward_like<M>(m.m_bottom); } }; @@ -299,33 +300,50 @@ private: qreal m_right; qreal m_bottom; - friend constexpr inline bool operator==(const QMarginsF &lhs, const QMarginsF &rhs) noexcept + QT_WARNING_PUSH + QT_WARNING_DISABLE_FLOAT_COMPARE + friend constexpr bool qFuzzyCompare(const QMarginsF &lhs, const QMarginsF &rhs) noexcept + { + return ((!lhs.m_left || !rhs.m_left) ? qFuzzyIsNull(lhs.m_left - rhs.m_left) + : qFuzzyCompare(lhs.m_left, rhs.m_left)) + && ((!lhs.m_top || !rhs.m_top) ? qFuzzyIsNull(lhs.m_top - rhs.m_top) + : qFuzzyCompare(lhs.m_top, rhs.m_top)) + && ((!lhs.m_right || !rhs.m_right) ? qFuzzyIsNull(lhs.m_right - rhs.m_right) + : qFuzzyCompare(lhs.m_right, rhs.m_right)) + && ((!lhs.m_bottom || !rhs.m_bottom) ? qFuzzyIsNull(lhs.m_bottom - rhs.m_bottom) + : qFuzzyCompare(lhs.m_bottom, rhs.m_bottom)); + } + QT_WARNING_POP + friend constexpr bool qFuzzyIsNull(const QMarginsF &m) noexcept { - return qFuzzyCompare(lhs.left(), rhs.left()) - && qFuzzyCompare(lhs.top(), rhs.top()) - && qFuzzyCompare(lhs.right(), rhs.right()) - && qFuzzyCompare(lhs.bottom(), rhs.bottom()); + return qFuzzyIsNull(m.m_left) && qFuzzyIsNull(m.m_top) + && qFuzzyIsNull(m.m_right) && qFuzzyIsNull(m.m_bottom); } - friend constexpr inline bool operator!=(const QMarginsF &lhs, const QMarginsF &rhs) noexcept + friend constexpr bool comparesEqual(const QMarginsF &lhs, const QMarginsF &rhs) noexcept { - return !(lhs == rhs); + return qFuzzyCompare(lhs, rhs); } + Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QMarginsF) + + friend constexpr bool comparesEqual(const QMarginsF &lhs, const QMargins &rhs) noexcept + { return comparesEqual(lhs, rhs.toMarginsF()); } + Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QMarginsF, QMargins) template <std::size_t I, typename M, std::enable_if_t<(I < 4), bool> = true, - std::enable_if_t<std::is_same_v<std::decay_t<M>, QMarginsF>, bool> = true> + std::enable_if_t<std::is_same_v<q20::remove_cvref_t<M>, QMarginsF>, bool> = true> friend constexpr decltype(auto) get(M &&m) noexcept { if constexpr (I == 0) - return (std::forward<M>(m).m_left); + return q23::forward_like<M>(m.m_left); else if constexpr (I == 1) - return (std::forward<M>(m).m_top); + return q23::forward_like<M>(m.m_top); else if constexpr (I == 2) - return (std::forward<M>(m).m_right); + return q23::forward_like<M>(m.m_right); else if constexpr (I == 3) - return (std::forward<M>(m).m_bottom); + return q23::forward_like<M>(m.m_bottom); } }; |