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// Copyright (C) 2016 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 QREGION_H
#define QREGION_H
#include <QtGui/qtguiglobal.h>
#include <QtCore/qatomic.h>
#include <QtCore/qrect.h>
#include <QtGui/qwindowdefs.h>
#include <QtCore/qcontainerfwd.h>
#ifndef QT_NO_DATASTREAM
#include <QtCore/qdatastream.h>
#endif
QT_BEGIN_NAMESPACE
class QVariant;
struct QRegionPrivate;
class QBitmap;
class Q_GUI_EXPORT QRegion
{
public:
enum RegionType { Rectangle, Ellipse };
QRegion();
QRegion(int x, int y, int w, int h, RegionType t = Rectangle);
QRegion(const QRect &r, RegionType t = Rectangle);
QRegion(const QPolygon &pa, Qt::FillRule fillRule = Qt::OddEvenFill);
QRegion(const QRegion ®ion);
QRegion(QRegion &&other) noexcept
: d(std::exchange(other.d, const_cast<QRegionData*>(&shared_empty))) {}
QRegion(const QBitmap &bitmap);
~QRegion();
QRegion &operator=(const QRegion &);
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QRegion)
void swap(QRegion &other) noexcept { qt_ptr_swap(d, other.d); }
bool isEmpty() const;
bool isNull() const;
typedef const QRect *const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
const_iterator begin() const noexcept;
const_iterator cbegin() const noexcept { return begin(); }
const_iterator end() const noexcept;
const_iterator cend() const noexcept { return end(); }
const_reverse_iterator rbegin() const noexcept { return const_reverse_iterator(end()); }
const_reverse_iterator crbegin() const noexcept { return rbegin(); }
const_reverse_iterator rend() const noexcept { return const_reverse_iterator(begin()); }
const_reverse_iterator crend() const noexcept { return rend(); }
bool contains(const QPoint &p) const;
bool contains(const QRect &r) const;
void translate(int dx, int dy);
inline void translate(const QPoint &p) { translate(p.x(), p.y()); }
[[nodiscard]] QRegion translated(int dx, int dy) const;
[[nodiscard]] inline QRegion translated(const QPoint &p) const { return translated(p.x(), p.y()); }
[[nodiscard]] QRegion united(const QRegion &r) const;
[[nodiscard]] QRegion united(const QRect &r) const;
[[nodiscard]] QRegion intersected(const QRegion &r) const;
[[nodiscard]] QRegion intersected(const QRect &r) const;
[[nodiscard]] QRegion subtracted(const QRegion &r) const;
[[nodiscard]] QRegion xored(const QRegion &r) const;
bool intersects(const QRegion &r) const;
bool intersects(const QRect &r) const;
QRect boundingRect() const noexcept;
void setRects(const QRect *rect, int num);
int rectCount() const noexcept;
QRegion operator|(const QRegion &r) const;
QRegion operator+(const QRegion &r) const;
QRegion operator+(const QRect &r) const;
QRegion operator&(const QRegion &r) const;
QRegion operator&(const QRect &r) const;
QRegion operator-(const QRegion &r) const;
QRegion operator^(const QRegion &r) const;
QRegion& operator|=(const QRegion &r);
QRegion& operator+=(const QRegion &r);
QRegion& operator+=(const QRect &r);
QRegion& operator&=(const QRegion &r);
QRegion& operator&=(const QRect &r);
QRegion& operator-=(const QRegion &r);
QRegion& operator^=(const QRegion &r);
bool operator==(const QRegion &r) const;
inline bool operator!=(const QRegion &r) const { return !(operator==(r)); }
operator QVariant() const;
// Platform specific conversion functions
#if defined(Q_OS_WIN) || defined(Q_QDOC)
HRGN toHRGN() const;
static QRegion fromHRGN(HRGN hrgn);
#endif
#ifndef QT_NO_DATASTREAM
friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &);
friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &);
#endif
private:
QRegion copy() const; // helper of detach.
void detach();
Q_GUI_EXPORT
friend bool qt_region_strictContains(const QRegion ®ion,
const QRect &rect);
friend struct QRegionPrivate;
#ifndef QT_NO_DATASTREAM
void exec(const QByteArray &ba, int ver = 0, QDataStream::ByteOrder byteOrder = QDataStream::BigEndian);
#endif
struct QRegionData {
QtPrivate::RefCount ref;
QRegionPrivate *qt_rgn;
};
struct QRegionData *d;
static const struct QRegionData shared_empty;
static void cleanUp(QRegionData *x);
};
Q_DECLARE_SHARED(QRegion)
/*****************************************************************************
QRegion stream functions
*****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &);
#endif
#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug, const QRegion &);
#endif
QT_END_NAMESPACE
#endif // QREGION_H
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