QPixmapCache::Key Class Reference

The QPixmapCache::Key class can be used for efficient access to the QPixmapCache. \inmodule QtGui. More...

#include <qpixmapcache.h>

Public Member Functions
	Key ()
	Key (const Key &other)
	Key (Key &&other) noexcept
Key &	operator= (Key &&other) noexcept
	~Key ()
bool	operator== (const Key &key) const
bool	operator!= (const Key &key) const
Key &	operator= (const Key &other)
void	swap (Key &other) noexcept
bool	isValid () const noexcept

Friends
class	QPMCache
class	QPixmapCache

Detailed Description

The QPixmapCache::Key class can be used for efficient access to the QPixmapCache. \inmodule QtGui.

Since

4.6

Use QPixmapCache::insert() to receive an instance of Key generated by the pixmap cache. You can store the key in your own objects for a very efficient one-to-one object-to-pixmap mapping.

Definition at line 53 of file qpixmapcache.h.

Constructor & Destructor Documentation

Key() [1/3]

QPixmapCache::Key::Key

(

)

Constructs an empty Key object.

Definition at line 129 of file qpixmapcache.cpp.

Key() [2/3]

QPixmapCache::Key::Key

(

const Key &

other

)

Definition at line 137 of file qpixmapcache.cpp.

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Key() [3/3]

QPixmapCache::Key::Key ( Key &&  other )

inlinenoexcept

Definition at line 58 of file qpixmapcache.h.

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~Key()

QPixmapCache::Key::~Key

(

)

Destroys the key.

Definition at line 147 of file qpixmapcache.cpp.

Member Function Documentation

isValid()

bool QPixmapCache::Key::isValid ( ) const

noexcept

Returns true if there is a cached pixmap associated with this key. Otherwise, if pixmap was flushed, the key is no longer valid.

Since

5.7

Definition at line 192 of file qpixmapcache.cpp.

operator!=()

bool QPixmapCache::Key::operator!= ( const Key &  key ) const

inline

Definition at line 62 of file qpixmapcache.h.

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operator=() [1/2]

QPixmapCache::Key & QPixmapCache::Key::operator=

(

const Key &

other

)

Definition at line 200 of file qpixmapcache.cpp.

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operator=() [2/2]

QPixmapCache::Key & QPixmapCache::Key::operator= ( Key &&  other )

inlinenoexcept

Definition at line 59 of file qpixmapcache.h.

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operator==()

bool QPixmapCache::Key::operator==

(

const Key &

key

)

const

Definition at line 159 of file qpixmapcache.cpp.

swap()

void QPixmapCache::Key::swap ( Key &  other )

inlinenoexcept

Definition at line 66 of file qpixmapcache.h.

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Friends And Related Function Documentation

QPixmapCache

friend class QPixmapCache

friend

Definition at line 72 of file qpixmapcache.h.

QPMCache

friend class QPMCache

friend

Definition at line 71 of file qpixmapcache.h.

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

• src/gui/image/qpixmapcache.h
• src/gui/image/qpixmapcache.cpp