KIdleTime Class Reference

#include <KIdleTime>

Inheritance diagram for KIdleTime:

Signals
void	resumingFromIdle ()
void	timeoutReached (int identifier, int msec)

Public Slots
int	addIdleTimeout (int msec)
void	catchNextResumeEvent ()
void	removeAllIdleTimeouts ()
void	removeIdleTimeout (int identifier)
void	stopCatchingResumeEvent ()

Public Member Functions
	~KIdleTime () override
int	idleTime () const
QHash< int, int >	idleTimeouts () const
void	simulateUserActivity ()
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

Static Public Member Functions
static KIdleTime *	instance ()
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)

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList
Properties inherited from QObject
	objectName
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

KIdleTime is a singleton reporting information on idle time.

It is useful not only for finding out about the current idle time of the PC, but also for getting notified upon idle time events, such as custom timeouts, or user activity.

Note

All the intervals and times in this library are in milliseconds, unless specified otherwise

Author

Dario Freddi

Since

4.4

Definition at line 36 of file kidletime.h.

Constructor & Destructor Documentation

~KIdleTime()

KIdleTime::~KIdleTime ( )

override

The destructor.

Definition at line 92 of file kidletime.cpp.

Member Function Documentation

addIdleTimeout

int KIdleTime::addIdleTimeout ( int msec )

slot

Adds a new timeout to catch.

When calling this method, after the system will be idle for msec milliseconds, the signal timeoutReached will be triggered. Please note that until you will call removeIdleTimeout or removeAllIdleTimeouts, the signal will be triggered every time the system will be idle for msec milliseconds. This function also returns an unique token for the timeout just added to allow easier identification.

Parameters

msec	the time, in milliseconds, after which the signal will be triggered

Returns

an unique identifier for the timeout being added, that will be streamed by timeoutReached

See also

removeIdleTimeout

removeAllIdleTimeouts

timeoutReached

Definition at line 118 of file kidletime.cpp.

catchNextResumeEvent

void KIdleTime::catchNextResumeEvent ( )

slot

Catches the next resume from idle event.

This means that whenever user activity will be registered, or simulateUserActivity is called, the signal resumingFromIdle will be triggered.

Please note that this method will trigger the signal just for the very first resume event after the call: this means you explicitly have to request to track every single resume event you are interested in.

Note

This behavior is due to the fact that a resume event happens whenever the user sends an input to the system. This would lead to a massive amount of signals being delivered when the PC is being used. Moreover, you are usually interested in catching just significant resume events, such as the ones after a significant period of inactivity. For tracking user input, you can use the more efficient methods provided by Qt. The purpose of this library is just monitoring the activity of the user.

See also

resumingFromIdle

simulateUserActivity

Definition at line 98 of file kidletime.cpp.

idleTime()

int KIdleTime::idleTime

(

)

const

Retrieves the idle time of the system, in milliseconds.

Returns

the idle time of the system

Definition at line 311 of file kidletime.cpp.

idleTimeouts()

QHash< int, int > KIdleTime::idleTimeouts

(

)

const

Returns the list of timeout identifiers associated with their duration, in milliseconds, the library is currently listening to.

See also

addIdleTimeout

removeIdleTimeout

timeoutReached

Definition at line 320 of file kidletime.cpp.

instance()

KIdleTime * KIdleTime::instance ( )

static

Returns the singleton instance.

Use this method to access KIdleTime

Returns

the instance of KIdleTime

Definition at line 39 of file kidletime.cpp.

removeAllIdleTimeouts

void KIdleTime::removeAllIdleTimeouts ( )

slot

Stops catching every set timeout (if any).

This means that after calling this method, the signal timeoutReached won't be called again until you will add another timeout

See also

timeoutReached

addIdleTimeout

Definition at line 159 of file kidletime.cpp.

removeIdleTimeout

void KIdleTime::removeIdleTimeout ( int identifier )

slot

Stops catching the idle timeout identified by the token identifier, if it was registered earlier with addIdleTimeout.

Otherwise does nothing.

Parameters

identifier

the token returned from addIdleTimeout of the timeout you want to stop listening to

Definition at line 137 of file kidletime.cpp.

resumingFromIdle

void KIdleTime::resumingFromIdle ( )

signal

Triggered, if KIdleTime is catching resume events, when the system resumes from an idle state.

This means that either simulateUserActivity was called or the user sent an input to the system.

See also

catchNextResumeEvent

simulateUserActivity()

void KIdleTime::simulateUserActivity

(

)

Attempts to simulate user activity.

This implies that after calling this method, the idle time of the system will become 0 and eventually resumingFromIdle will be triggered

See also

resumingFromIdle

Definition at line 302 of file kidletime.cpp.

stopCatchingResumeEvent

void KIdleTime::stopCatchingResumeEvent ( )

slot

Stops listening for resume event.

This function serves for canceling catchNextResumeEvent, as it will have effect just when catchNextResumeEvent has been called and resumingFromIdle not yet triggered

See also

resumingFromIdle

catchNextResumeEvent

Definition at line 108 of file kidletime.cpp.

timeoutReached

void KIdleTime::timeoutReached ( int identifier, int msec )

signal

Triggered when the system has been idle for x milliseconds, identified by the previously set timeout.

This signal is triggered whenever each timeout previously registered with addIdleTimeout(int) is reached. It is guaranteed that msec will exactly correspond to the identified timeout.

Parameters

identifier	the identifier of the timeout the system has reached
msec	the time, in milliseconds, the system has been idle for

See also

addIdleTimeout

removeIdleTimeout

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

• kidletime.h
• kidletime.cpp