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-rw-r--r--src/corelib/tools/qpoint.h132
1 files changed, 83 insertions, 49 deletions
diff --git a/src/corelib/tools/qpoint.h b/src/corelib/tools/qpoint.h
index d69e793d3a..50b4c864be 100644
--- a/src/corelib/tools/qpoint.h
+++ b/src/corelib/tools/qpoint.h
@@ -1,46 +1,15 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtCore module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QPOINT_H
#define QPOINT_H
+#include <QtCore/qcompare.h>
#include <QtCore/qnamespace.h>
+#include <QtCore/qnumeric.h>
+
+#include <QtCore/q20type_traits.h>
+#include <QtCore/q23utility.h>
#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
struct CGPoint;
@@ -48,6 +17,10 @@ struct CGPoint;
QT_BEGIN_NAMESPACE
+QT_ENABLE_P0846_SEMANTICS_FOR(get)
+
+class QPointF;
+
class QPoint
{
public:
@@ -80,10 +53,10 @@ public:
constexpr static inline int dotProduct(const QPoint &p1, const QPoint &p2)
{ return p1.xp * p2.xp + p1.yp * p2.yp; }
- friend constexpr inline bool operator==(const QPoint &p1, const QPoint &p2) noexcept
+private:
+ friend constexpr bool comparesEqual(const QPoint &p1, const QPoint &p2) noexcept
{ return p1.xp == p2.xp && p1.yp == p2.yp; }
- friend constexpr inline bool operator!=(const QPoint &p1, const QPoint &p2) noexcept
- { return p1.xp != p2.xp || p1.yp != p2.yp; }
+ Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QPoint)
friend constexpr inline QPoint operator+(const QPoint &p1, const QPoint &p2) noexcept
{ return QPoint(p1.xp + p2.xp, p1.yp + p2.yp); }
friend constexpr inline QPoint operator-(const QPoint &p1, const QPoint &p2) noexcept
@@ -107,17 +80,31 @@ public:
friend constexpr inline QPoint operator/(const QPoint &p, qreal c)
{ return QPoint(qRound(p.xp / c), qRound(p.yp / c)); }
+public:
#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
[[nodiscard]] Q_CORE_EXPORT CGPoint toCGPoint() const noexcept;
#endif
+ [[nodiscard]] constexpr inline QPointF toPointF() const noexcept;
private:
friend class QTransform;
int xp;
int yp;
+
+ template <std::size_t I,
+ typename P,
+ std::enable_if_t<(I < 2), bool> = true,
+ std::enable_if_t<std::is_same_v<q20::remove_cvref_t<P>, QPoint>, bool> = true>
+ friend constexpr decltype(auto) get(P &&p) noexcept
+ {
+ if constexpr (I == 0)
+ return q23::forward_like<P>(p.xp);
+ else if constexpr (I == 1)
+ return q23::forward_like<P>(p.yp);
+ }
};
-Q_DECLARE_TYPEINFO(QPoint, Q_MOVABLE_TYPE);
+Q_DECLARE_TYPEINFO(QPoint, Q_PRIMITIVE_TYPE);
/*****************************************************************************
QPoint stream functions
@@ -257,19 +244,25 @@ public:
return p1.xp * p2.xp + p1.yp * p2.yp;
}
+private:
QT_WARNING_PUSH
QT_WARNING_DISABLE_FLOAT_COMPARE
- friend constexpr inline bool operator==(const QPointF &p1, const QPointF &p2)
+ friend constexpr bool qFuzzyCompare(const QPointF &p1, const QPointF &p2) noexcept
{
return ((!p1.xp || !p2.xp) ? qFuzzyIsNull(p1.xp - p2.xp) : qFuzzyCompare(p1.xp, p2.xp))
&& ((!p1.yp || !p2.yp) ? qFuzzyIsNull(p1.yp - p2.yp) : qFuzzyCompare(p1.yp, p2.yp));
}
- friend constexpr inline bool operator!=(const QPointF &p1, const QPointF &p2)
+ QT_WARNING_POP
+ friend constexpr bool qFuzzyIsNull(const QPointF &point) noexcept
{
- return !(p1 == p2);
+ return qFuzzyIsNull(point.xp) && qFuzzyIsNull(point.yp);
}
- QT_WARNING_POP
-
+ friend constexpr bool comparesEqual(const QPointF &p1, const QPointF &p2) noexcept
+ { return qFuzzyCompare(p1, p2); }
+ Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QPointF)
+ friend constexpr bool comparesEqual(const QPointF &p1, const QPoint &p2) noexcept
+ { return comparesEqual(p1, p2.toPointF()); }
+ Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QPointF, QPoint)
friend constexpr inline QPointF operator+(const QPointF &p1, const QPointF &p2)
{ return QPointF(p1.xp + p2.xp, p1.yp + p2.yp); }
friend constexpr inline QPointF operator-(const QPointF &p1, const QPointF &p2)
@@ -283,8 +276,12 @@ public:
friend constexpr inline QPointF operator-(const QPointF &p)
{ return QPointF(-p.xp, -p.yp); }
friend constexpr inline QPointF operator/(const QPointF &p, qreal divisor)
- { return QPointF(p.xp / divisor, p.yp / divisor); }
+ {
+ Q_ASSERT(divisor < 0 || divisor > 0);
+ return QPointF(p.xp / divisor, p.yp / divisor);
+ }
+public:
constexpr QPoint toPoint() const;
#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
@@ -297,9 +294,23 @@ private:
qreal xp;
qreal yp;
+
+ template <std::size_t I,
+ typename P,
+ std::enable_if_t<(I < 2), bool> = true,
+ std::enable_if_t<std::is_same_v<q20::remove_cvref_t<P>, QPointF>, bool> = true>
+ friend constexpr decltype(auto) get(P &&p) noexcept
+ {
+ if constexpr (I == 0)
+ return q23::forward_like<P>(p.xp);
+ else if constexpr (I == 1)
+ return q23::forward_like<P>(p.yp);
+ }
};
-Q_DECLARE_TYPEINFO(QPointF, Q_MOVABLE_TYPE);
+Q_DECLARE_TYPEINFO(QPointF, Q_PRIMITIVE_TYPE);
+
+size_t qHash(QPointF, size_t seed = 0) = delete;
/*****************************************************************************
QPointF stream functions
@@ -382,11 +393,14 @@ constexpr inline QPointF &QPointF::operator*=(qreal c)
constexpr inline QPointF &QPointF::operator/=(qreal divisor)
{
+ Q_ASSERT(divisor > 0 || divisor < 0);
xp /= divisor;
yp /= divisor;
return *this;
}
+constexpr QPointF QPoint::toPointF() const noexcept { return *this; }
+
constexpr inline QPoint QPointF::toPoint() const
{
return QPoint(qRound(xp), qRound(yp));
@@ -398,4 +412,24 @@ Q_CORE_EXPORT QDebug operator<<(QDebug d, const QPointF &p);
QT_END_NAMESPACE
+/*****************************************************************************
+ QPoint/QPointF tuple protocol
+ *****************************************************************************/
+
+namespace std {
+ template <>
+ class tuple_size<QT_PREPEND_NAMESPACE(QPoint)> : public integral_constant<size_t, 2> {};
+ template <>
+ class tuple_element<0, QT_PREPEND_NAMESPACE(QPoint)> { public: using type = int; };
+ template <>
+ class tuple_element<1, QT_PREPEND_NAMESPACE(QPoint)> { public: using type = int; };
+
+ template <>
+ class tuple_size<QT_PREPEND_NAMESPACE(QPointF)> : public integral_constant<size_t, 2> {};
+ template <>
+ class tuple_element<0, QT_PREPEND_NAMESPACE(QPointF)> { public: using type = QT_PREPEND_NAMESPACE(qreal); };
+ template <>
+ class tuple_element<1, QT_PREPEND_NAMESPACE(QPointF)> { public: using type = QT_PREPEND_NAMESPACE(qreal); };
+}
+
#endif // QPOINT_H
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-26 12:51:42 +0000