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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 QSOCKETNOTIFIER_H
#define QSOCKETNOTIFIER_H
#include <QtCore/qobject.h>
QT_BEGIN_NAMESPACE
class QSocketDescriptor;
class QSocketNotifierPrivate;
class Q_CORE_EXPORT QSocketNotifier : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QSocketNotifier)
public:
enum Type { Read, Write, Exception };
explicit QSocketNotifier(Type, QObject *parent = nullptr);
QSocketNotifier(qintptr socket, Type, QObject *parent = nullptr);
~QSocketNotifier();
void setSocket(qintptr socket);
qintptr socket() const;
Type type() const;
bool isValid() const;
bool isEnabled() const;
public Q_SLOTS:
void setEnabled(bool);
Q_SIGNALS:
#if defined(Q_MOC_RUN)
// Add default arguments during Q_MOC_RUN which makes moc generate "signals" which takes less
// parameters, but we won't actually allow emitting without all 3. This lets users use the
// string-based connect without specifying QSocketNotifier::Type as one of the parameters.
void activated(QSocketDescriptor socket, QSocketNotifier::Type activationEvent = Read,
QPrivateSignal = {});
#else
void activated(QSocketDescriptor socket, QSocketNotifier::Type activationEvent, QPrivateSignal);
#endif
// ### Qt7: consider removing it.
// The old signal is compiled internally, but hidden outside of this class.
// This means the PMF-based connect(..) will automatically, on recompile, pick up the new
// version while the old-style connect(..) can query the metaobject system for this version.
#if defined(Q_MOC_RUN) || defined(BUILDING_QSOCKETNOTIFIER) || defined(Q_QDOC)
QT_MOC_COMPAT void activated(int socket, QPrivateSignal);
#endif
protected:
bool event(QEvent *) override;
private:
Q_DISABLE_COPY(QSocketNotifier)
};
class QSocketDescriptor
{
public:
#if defined(Q_OS_WIN) || defined(Q_QDOC)
using DescriptorType = Qt::HANDLE;
#define Q_DECL_CONSTEXPR_NOT_WIN
#else
using DescriptorType = int;
#define Q_DECL_CONSTEXPR_NOT_WIN Q_DECL_CONSTEXPR
#endif
Q_DECL_CONSTEXPR_NOT_WIN Q_IMPLICIT
QSocketDescriptor(DescriptorType descriptor = DescriptorType(-1)) noexcept : sockfd(descriptor)
{
}
#if defined(Q_OS_WIN) || defined(Q_QDOC)
Q_IMPLICIT QSocketDescriptor(qintptr desc) noexcept : sockfd(DescriptorType(desc)) {}
Q_IMPLICIT operator qintptr() const noexcept { return qintptr(sockfd); }
Q_DECL_CONSTEXPR Qt::HANDLE winHandle() const noexcept { return sockfd; }
#endif
Q_DECL_CONSTEXPR operator DescriptorType() const noexcept { return sockfd; }
Q_DECL_CONSTEXPR_NOT_WIN bool isValid() const noexcept { return *this != QSocketDescriptor(); }
friend Q_DECL_CONSTEXPR_NOT_WIN bool operator==(QSocketDescriptor lhs,
QSocketDescriptor rhs) noexcept
{
return lhs.sockfd == rhs.sockfd;
}
friend Q_DECL_CONSTEXPR_NOT_WIN bool operator!=(QSocketDescriptor lhs,
QSocketDescriptor rhs) noexcept
{
return lhs.sockfd != rhs.sockfd;
}
#undef Q_DECL_CONSTEXPR_NOT_WIN
private:
DescriptorType sockfd;
};
QT_END_NAMESPACE
QT_DECL_METATYPE_EXTERN_TAGGED(QSocketNotifier::Type, QSocketNotifier_Type, Q_CORE_EXPORT)
QT_DECL_METATYPE_EXTERN(QSocketDescriptor, Q_CORE_EXPORT)
#endif // QSOCKETNOTIFIER_H
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