Qt 4.8
Public Functions | Static Public Functions | Static Private Functions | Properties | Static Private Attributes | List of all members
QGLBlurTextureCache Class Reference
Inheritance diagram for QGLBlurTextureCache:
QObject

Public Functions

void clearBlurTextureInfo (quint64 cacheKey)
 
bool hasBlurTextureInfo (quint64 cacheKey) const
 
void insertBlurTextureInfo (const QPixmap &pixmap, QGLBlurTextureInfo *info)
 
 QGLBlurTextureCache (const QGLContext *)
 
QGLBlurTextureInfotakeBlurTextureInfo (const QPixmap &pixmap)
 
void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object. More...
 
 ~QGLBlurTextureCache ()
 
- Public Functions inherited from QObject
bool blockSignals (bool b)
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
 
const QObjectListchildren () const
 Returns a list of child objects. More...
 
bool connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
 
bool disconnect (const QObject *receiver, const char *member=0)
 
void dumpObjectInfo ()
 Dumps information about signal connections, etc. More...
 
void dumpObjectTree ()
 Dumps a tree of children to the debug output. More...
 
QList< QByteArraydynamicPropertyNames () const
 Returns the names of all properties that were dynamically added to the object using setProperty(). More...
 
virtual bool event (QEvent *)
 This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
 
virtual bool eventFilter (QObject *, QEvent *)
 Filters events if this object has been installed as an event filter for the watched object. More...
 
template<typename T >
findChild (const QString &aName=QString()) const
 Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
 
template<typename T >
QList< T > findChildren (const QString &aName=QString()) 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. More...
 
template<typename T >
QList< T > findChildren (const QRegExp &re) const
 
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. More...
 
void installEventFilter (QObject *)
 Installs an event filter filterObj on this object. More...
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false. More...
 
void killTimer (int id)
 Kills the timer with timer identifier, id. More...
 
virtual const QMetaObjectmetaObject () const
 Returns a pointer to the meta-object of this object. More...
 
void moveToThread (QThread *thread)
 Changes the thread affinity for this object and its children. More...
 
QString objectName () const
 
QObjectparent () const
 Returns a pointer to the parent object. More...
 
QVariant property (const char *name) const
 Returns the value of the object's name property. More...
 
Q_INVOKABLE QObject (QObject *parent=0)
 Constructs an object with parent object parent. More...
 
void removeEventFilter (QObject *)
 Removes an event filter object obj from this object. More...
 
void setObjectName (const QString &name)
 
void setParent (QObject *)
 Makes the object a child of parent. More...
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value. More...
 
void setUserData (uint id, QObjectUserData *data)
 
bool signalsBlocked () const
 Returns true if signals are blocked; otherwise returns false. More...
 
int startTimer (int interval)
 Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
 
QThreadthread () const
 Returns the thread in which the object lives. More...
 
QObjectUserDatauserData (uint id) const
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects. More...
 

Static Public Functions

static QGLBlurTextureCachecacheForContext (const QGLContext *context)
 
- Static Public Functions inherited from QObject
static bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
 
static bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 Disconnects signal in object sender from method in object receiver. More...
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static uint registerUserData ()
 
static QString tr (const char *sourceText, const char *comment=0, int n=-1)
 
static QString trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
 

Static Private Functions

static void pixmapDestroyed (QPixmapData *pixmap)
 

Properties

QCache< quint64, QGLBlurTextureInfocache
 
int timerId
 

Static Private Attributes

static QList< QGLBlurTextureCache * > blurTextureCaches
 

Additional Inherited Members

- Public Slots inherited from QObject
void deleteLater ()
 Schedules this object for deletion. More...
 
- Signals inherited from QObject
void destroyed (QObject *=0)
 This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
 
- Static Public Variables inherited from QObject
static const QMetaObject staticMetaObject
 This variable stores the meta-object for the class. More...
 
- Protected Functions inherited from QObject
virtual void childEvent (QChildEvent *)
 This event handler can be reimplemented in a subclass to receive child events. More...
 
virtual void connectNotify (const char *signal)
 This virtual function is called when something has been connected to signal in this object. More...
 
virtual void customEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive custom events. More...
 
virtual void disconnectNotify (const char *signal)
 This virtual function is called when something has been disconnected from signal in this object. More...
 
 QObject (QObjectPrivate &dd, QObject *parent=0)
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal. More...
 
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
 
int senderSignalIndex () const
 
- Protected Variables inherited from QObject
QScopedPointer< QObjectDatad_ptr
 
- Static Protected Variables inherited from QObject
static const QMetaObject staticQtMetaObject
 

Detailed Description

Definition at line 313 of file qglpixmapfilter.cpp.

Constructors and Destructors

◆ QGLBlurTextureCache()

QGLBlurTextureCache::QGLBlurTextureCache ( const QGLContext )

Definition at line 341 of file qglpixmapfilter.cpp.

342  : timerId(0)
343 {
344  cache.setMaxCost(4 * 1024 * 1024);
346 }
void append(const T &t)
Inserts value at the end of the list.
Definition: qlist.h:507
QCache< quint64, QGLBlurTextureInfo > cache
void setMaxCost(int m)
Definition: qcache.h:143
static QList< QGLBlurTextureCache * > blurTextureCaches

◆ ~QGLBlurTextureCache()

QGLBlurTextureCache::~QGLBlurTextureCache ( )

Definition at line 348 of file qglpixmapfilter.cpp.

349 {
351 }
int indexOf(const T &t, int from=0) const
Returns the index position of the first occurrence of value in the list, searching forward from index...
Definition: qlist.h:847
static QList< QGLBlurTextureCache * > blurTextureCaches
void removeAt(int i)
Removes the item at index position i.
Definition: qlist.h:480

Functions

◆ cacheForContext()

QGLBlurTextureCache * QGLBlurTextureCache::cacheForContext ( const QGLContext context)
static

Definition at line 361 of file qglpixmapfilter.cpp.

Referenced by QGLPixmapBlurFilter::processGL(), and QGLPixmapDropShadowFilter::processGL().

362 {
363  return qt_blur_texture_caches()->value(context);
364 }

◆ clearBlurTextureInfo()

void QGLBlurTextureCache::clearBlurTextureInfo ( quint64  cacheKey)

Definition at line 371 of file qglpixmapfilter.cpp.

Referenced by pixmapDestroyed().

372 {
373  cache.remove(cacheKey);
374 }
QCache< quint64, QGLBlurTextureInfo > cache
bool remove(const Key &key)
Definition: qcache.h:155

◆ hasBlurTextureInfo()

bool QGLBlurTextureCache::hasBlurTextureInfo ( quint64  cacheKey) const

Definition at line 376 of file qglpixmapfilter.cpp.

Referenced by pixmapDestroyed().

377 {
378  return cache.contains(cacheKey);
379 }
QCache< quint64, QGLBlurTextureInfo > cache
bool contains(const Key &key) const
Definition: qcache.h:118

◆ insertBlurTextureInfo()

void QGLBlurTextureCache::insertBlurTextureInfo ( const QPixmap pixmap,
QGLBlurTextureInfo info 
)

Definition at line 381 of file qglpixmapfilter.cpp.

Referenced by QGLPixmapBlurFilter::processGL(), and QGLPixmapDropShadowFilter::processGL().

382 {
383  static bool hookAdded = false;
384  if (!hookAdded) {
387  hookAdded = true;
388  }
389 
391  cache.insert(pixmap.cacheKey(), info, pixmap.width() * pixmap.height());
392 
393  if (timerId)
395 
396  timerId = startTimer(8000);
397 }
int startTimer(int interval)
Starts a timer and returns a timer identifier, or returns zero if it could not start a timer...
Definition: qobject.cpp:1623
static mach_timebase_info_data_t info
int width() const
Returns the width of the pixmap.
Definition: qpixmap.cpp:630
void addPixmapDataModificationHook(_qt_pixmap_cleanup_hook_pmd)
static void enableCleanupHooks(const QImage &image)
QCache< quint64, QGLBlurTextureInfo > cache
void addPixmapDataDestructionHook(_qt_pixmap_cleanup_hook_pmd)
bool insert(const Key &key, T *object, int cost=1)
Definition: qcache.h:181
qint64 cacheKey() const
Returns a number that identifies this QPixmap.
Definition: qpixmap.cpp:1136
int height() const
Returns the height of the pixmap.
Definition: qpixmap.cpp:645
static void pixmapDestroyed(QPixmapData *pixmap)
static QImagePixmapCleanupHooks * instance()
void killTimer(int id)
Kills the timer with timer identifier, id.
Definition: qobject.cpp:1650

◆ pixmapDestroyed()

void QGLBlurTextureCache::pixmapDestroyed ( QPixmapData pixmap)
staticprivate

Definition at line 399 of file qglpixmapfilter.cpp.

400 {
402  if (cache->hasBlurTextureInfo(pmd->cacheKey()))
403  cache->clearBlurTextureInfo(pmd->cacheKey());
404  }
405 }
void clearBlurTextureInfo(quint64 cacheKey)
bool hasBlurTextureInfo(quint64 cacheKey) const
QCache< quint64, QGLBlurTextureInfo > cache
static QList< QGLBlurTextureCache * > blurTextureCaches

◆ takeBlurTextureInfo()

QGLBlurTextureInfo * QGLBlurTextureCache::takeBlurTextureInfo ( const QPixmap pixmap)

Definition at line 366 of file qglpixmapfilter.cpp.

Referenced by QGLPixmapBlurFilter::processGL(), and QGLPixmapDropShadowFilter::processGL().

367 {
368  return cache.take(pixmap.cacheKey());
369 }
T * take(const Key &key)
Definition: qcache.h:167
QCache< quint64, QGLBlurTextureInfo > cache
qint64 cacheKey() const
Returns a number that identifies this QPixmap.
Definition: qpixmap.cpp:1136

◆ timerEvent()

void QGLBlurTextureCache::timerEvent ( QTimerEvent event)
virtual

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

QTimer provides a higher-level interface 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 353 of file qglpixmapfilter.cpp.

354 {
356  timerId = 0;
357 
358  cache.clear();
359 }
void clear()
Definition: qcache.h:138
QCache< quint64, QGLBlurTextureInfo > cache
void killTimer(int id)
Kills the timer with timer identifier, id.
Definition: qobject.cpp:1650

Properties

◆ blurTextureCaches

QList< QGLBlurTextureCache * > QGLBlurTextureCache::blurTextureCaches
staticprivate

Definition at line 333 of file qglpixmapfilter.cpp.

◆ cache

QCache<quint64, QGLBlurTextureInfo > QGLBlurTextureCache::cache
private

Definition at line 331 of file qglpixmapfilter.cpp.

◆ timerId

int QGLBlurTextureCache::timerId
private

Definition at line 335 of file qglpixmapfilter.cpp.


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