#include <qquickpixmapcache_p.h>

Inheritance diagram for QQuickPixmapCache:

Collaboration diagram for QQuickPixmapCache:

Public Member Functions
	~QQuickPixmapCache () override

void	unreferencePixmap (QQuickPixmapData *)

void	referencePixmap (QQuickPixmapData *)

void	purgeCache ()

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

bool	setProperty (const char *name, QVariant &&value)

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Static Public Member Functions
static QQuickPixmapCache *	instance ()

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Member Functions
void	timerEvent (QTimerEvent *) override
	This event handler can be reimplemented in a subclass to receive timer events for the object.

Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Friends
class	QQuickPixmap

class	QQuickPixmapData

class	tst_qquickpixmapcache

class	tst_qquicktext

class	tst_qquicktextedit

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

A singleton managing the storage and garbage collection of QQuickPixmapData instances. It's exported only for the sake of autotests, and should not be manipulated outside qquickpixmap.cpp and qquickpixmapcache.cpp.

Definition at line 44 of file qquickpixmapcache_p.h.

Constructor & Destructor Documentation

◆ ~QQuickPixmapCache()

QQuickPixmapCache::~QQuickPixmapCache ( )

override

Definition at line 1213 of file qquickpixmapcache.cpp.

Member Function Documentation

◆ instance()

QQuickPixmapCache * QQuickPixmapCache::instance ( )

static

Definition at line 1207 of file qquickpixmapcache.cpp.

Referenced by QQuickPixmapData::addref(), QQuickPixmapData::addToCache(), QQuickPixmap::isCached(), QQuickPixmap::load(), QQuickPixmap::loadImageFromDevice(), QQuickPixmap::purgeCache(), QQuickPixmapData::release(), and QQuickPixmapData::removeFromCache().

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◆ purgeCache()

void QQuickPixmapCache::purgeCache ( )

Definition at line 1368 of file qquickpixmapcache.cpp.

◆ referencePixmap()

void QQuickPixmapCache::referencePixmap ( QQuickPixmapData * data )

Declare that data is being used (by a QQuickPixmap) so that shrinkCache() won't delete it. (This is not reference counting though.)

Definition at line 1311 of file qquickpixmapcache.cpp.

References QQuickPixmapData::nextUnreferenced, QQuickPixmapData::prevUnreferenced, QQuickPixmapData::prevUnreferencedPtr, Q_ASSERT, and qCDebug.

◆ timerEvent()

void QQuickPixmapCache::timerEvent ( QTimerEvent * event )

overrideprotectedvirtual

This event handler can be reimplemented in a subclass to receive timer events for the object.

QChronoTimer provides higher-level interfaces to the timer functionality, and also more general information about timers. The timer event is passed in the event parameter.

See also: startTimer(), killTimer(), event()

Reimplemented from QObject.

Definition at line 1356 of file qquickpixmapcache.cpp.

References CACHE_REMOVAL_FRACTION, and QObject::killTimer().

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◆ unreferencePixmap()

void QQuickPixmapCache::unreferencePixmap ( QQuickPixmapData * data )

Declare that data is currently unused so that shrinkCache() can lazily delete it later.

Definition at line 1277 of file qquickpixmapcache.cpp.

References CACHE_EXPIRE_TIME, QCoreApplication::closingDown(), QQuickPixmapData::nextUnreferenced, QQuickPixmapData::prevUnreferenced, QQuickPixmapData::prevUnreferencedPtr, Q_ASSERT, qCDebug, and QObject::startTimer().

Referenced by QQuickPixmapData::release().

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Friends And Related Symbol Documentation

◆ QQuickPixmap

friend class QQuickPixmap

friend

Definition at line 79 of file qquickpixmapcache_p.h.

◆ QQuickPixmapData

friend class QQuickPixmapData

friend

Definition at line 80 of file qquickpixmapcache_p.h.

◆ tst_qquickpixmapcache

friend class tst_qquickpixmapcache

friend

Definition at line 81 of file qquickpixmapcache_p.h.

◆ tst_qquicktext

friend class tst_qquicktext

friend

Definition at line 82 of file qquickpixmapcache_p.h.

◆ tst_qquicktextedit

friend class tst_qquicktextedit

friend

Definition at line 83 of file qquickpixmapcache_p.h.

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

qtdeclarative/src/quick/util/qquickpixmapcache_p.h (7fb39a7accba014063e32ac41a58b77905bbd95b)
qtdeclarative/src/quick/util/qquickpixmapcache.cpp (7fb39a7accba014063e32ac41a58b77905bbd95b)

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~QQuickPixmapCache()

Member Function Documentation

◆ instance()

◆ purgeCache()

◆ referencePixmap()

◆ timerEvent()

◆ unreferencePixmap()

Friends And Related Symbol Documentation

◆ QQuickPixmap

◆ QQuickPixmapData

◆ tst_qquickpixmapcache

◆ tst_qquicktext

◆ tst_qquicktextedit