KMessageIO Class Reference

#include <KGame/KMessageIO>

Inheritance diagram for KMessageIO:

Signals
void	connectionBroken ()
void	received (const QByteArray &msg)

Public Slots
virtual void	send (const QByteArray &msg)=0

Public Member Functions
	KMessageIO (QObject *parent=nullptr)
	~KMessageIO () override
quint32	id ()
virtual bool	isConnected () const
virtual bool	isNetwork () const
virtual QString	peerName () const
virtual quint16	peerPort () const
virtual int	rtti () const
void	setId (quint32 id)
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo () const const
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Protected Attributes
quint32	m_id

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Detailed Description

This abstract base class represents one end of a message connections between two clients.

Each client has one object of a subclass of KMessageIO. Calling /e send() on one object will emit the signal /e received() on the other object, and vice versa.

For each type of connection (TCP/IP socket, COM port, direct connection within the same class) a subclass of KMessageIO must be defined that implements the pure virtual methods /e send() and /e isConnected(), and sends the signals. (See /e KMessageSocket for an example implementation.)

Two subclasses are already included: /e KMessageSocket (connection using TCP/IP sockets) and /e KMessageDirect (connection using method calls, both sides must be within the same process).

Definition at line 43 of file kmessageio.h.

Constructor & Destructor Documentation

KMessageIO()

KMessageIO::KMessageIO ( QObject * parent = nullptr )

explicit

The usual QObject constructor, does nothing else.

Definition at line 23 of file kmessageio.cpp.

~KMessageIO()

KMessageIO::~KMessageIO ( )

override

The usual destructor, does nothing special.

Definition at line 29 of file kmessageio.cpp.

Member Function Documentation

connectionBroken

void KMessageIO::connectionBroken ( )

signal

This signal is emitted when the connection is closed.

This can be caused by a hardware error (e.g. broken internet connection) or because the other object was killed.

Note: Sometimes a broken connection can be undetected for a long time, or may never be detected at all. So don't rely on this signal!

id()

quint32 KMessageIO::id

(

)

Queries the ID of this object.

Definition at line 38 of file kmessageio.cpp.

isConnected()

bool KMessageIO::isConnected ( ) const

virtual

This method returns the status of the object, whether it is already (or still) connected to another KMessageIO object or not.

This is a pure virtual method, so it has to be implemented in a subclass of KMessageIO.

Reimplemented in KMessageDirect, and KMessageSocket.

Definition at line 49 of file kmessageio.cpp.

isNetwork()

bool KMessageIO::isNetwork ( ) const

virtual

Returns

Whether this KMessageIO is a network IO or not.

Reimplemented in KMessageDirect, and KMessageSocket.

Definition at line 43 of file kmessageio.cpp.

peerName()

QString KMessageIO::peerName ( ) const

virtual

Returns

"localhost" in the default implementation. Reimplemented in KMessageSocket

Reimplemented in KMessageSocket.

Definition at line 60 of file kmessageio.cpp.

peerPort()

quint16 KMessageIO::peerPort ( ) const

virtual

Returns

0 in the default implementation. Reimplemented in KMessageSocket.

Reimplemented in KMessageSocket.

Definition at line 55 of file kmessageio.cpp.

received

void KMessageIO::received ( const QByteArray & msg )

signal

This signal is emitted when /e send() on the connected KMessageIO object is called.

The parameter contains the same data array in /e msg as was used in /e send().

rtti()

virtual int KMessageIO::rtti ( ) const

inlinevirtual

The runtime identification.

Reimplemented in KMessageDirect, and KMessageSocket.

Definition at line 61 of file kmessageio.h.

send

virtual void KMessageIO::send ( const QByteArray & msg )

pure virtualslot

This slot sends the data block in /e msg to the connected object, that will emit /e received().

For a concrete class, you have to subclass /e KMessageIO and overwrite this method. In the subclass, implement this method as an ordinary method, not as a slot! (Otherwise another slot would be defined. It would work, but uses more memory and time.) See /e KMessageSocket for an example implementation.

Implemented in KMessageDirect, and KMessageSocket.

setId()

void KMessageIO::setId

(

quint32

id

)

Sets the ID number of this object.

This number can for example be used to distinguish several objects in a server.

NOTE: Sometimes it is useful to let two connected KMessageIO objects have the same ID number. You have to do so yourself, KMessageIO doesn't change this value on its own!

Definition at line 33 of file kmessageio.cpp.

Member Data Documentation

m_id

quint32 KMessageIO::m_id

protected

Definition at line 139 of file kmessageio.h.

---

The documentation for this class was generated from the following files:

• kmessageio.h
• kmessageio.cpp