The QMovie class is a convenience class for playing movies with QImageReader. More...

#include <qmovie.h>

Inheritance diagram for QMovie:

Public Types
enum	CacheMode { CacheNone, CacheAll }
	This enum describes the different cache modes of QMovie. More...

enum	MovieState { NotRunning, Paused, Running }
	This enum describes the different states of QMovie. More...

Public Slots
bool	jumpToNextFrame ()
	Jumps to the next frame. More...

void	setPaused (bool paused)
	If paused is true, QMovie will enter Paused state and emit stateChanged(Paused); otherwise it will enter Running state and emit stateChanged(Running). More...

void	setSpeed (int percentSpeed)

void	start ()
	Starts the movie. More...

void	stop ()
	Stops the movie. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals
void	error (QImageReader::ImageReaderError error)
	This signal is emitted by QMovie when the error error occurred during playback. More...

void	finished ()
	This signal is emitted when the movie has finished. More...

void	frameChanged (int frameNumber)
	This signal is emitted when the frame number has changed to frameNumber. More...

void	resized (const QSize &size)
	This signal is emitted when the current frame has been resized to size. More...

void	started ()
	This signal is emitted after QMovie::start() has been called, and QMovie has entered QMovie::Running state. More...

void	stateChanged (QMovie::MovieState state)
	This signal is emitted every time the state of the movie changes. More...

void	updated (const QRect &rect)
	This signal is emitted when the rect rect in the current frame has been updated. 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...

Public Functions
QColor	backgroundColor () const
	Returns the background color of the movie. More...

CacheMode	cacheMode () const

CacheMode	cacheMode ()

int	currentFrameNumber () const
	Returns the sequence number of the current frame. More...

QImage	currentImage () const
	Returns the current frame as a QImage. More...

QPixmap	currentPixmap () const
	Returns the current frame as a QPixmap. More...

QIODevice *	device () const
	Returns the device QMovie reads image data from. More...

QString	fileName () const
	Returns the name of the file that QMovie reads image data from. More...

QByteArray	format () const
	Returns the format that QMovie uses when decoding image data. More...

int	frameCount () const
	Returns the number of frames in the movie. More...

QRect	frameRect () const
	Returns the rect of the last frame. More...

bool	isValid () const
	Returns true if the movie is valid (e.g., the image data is readable and the image format is supported); otherwise returns false. More...

bool	jumpToFrame (int frameNumber)
	Jumps to frame number frameNumber. More...

int	loopCount () const
	Returns the number of times the movie will loop before it finishes. More...

int	nextFrameDelay () const
	Returns the number of milliseconds QMovie will wait before updating the next frame in the animation. More...

	QMovie (QObject *parent=0)
	Constructs a QMovie object, passing the parent object to QObject's constructor. More...

	QMovie (QIODevice device, const QByteArray &format=QByteArray(), QObject parent=0)
	Constructs a QMovie object. More...

	QMovie (const QString &fileName, const QByteArray &format=QByteArray(), QObject *parent=0)
	Constructs a QMovie object. More...

QSize	scaledSize ()
	Returns the scaled size of frames. More...

void	setBackgroundColor (const QColor &color)
	For image formats that support it, this function sets the background color to color. More...

void	setCacheMode (CacheMode mode)

void	setDevice (QIODevice *device)
	Sets the current device to device. More...

void	setFileName (const QString &fileName)
	Sets the name of the file that QMovie reads image data from, to fileName. More...

void	setFormat (const QByteArray &format)
	Sets the format that QMovie will use when decoding image data, to format. More...

void	setScaledSize (const QSize &size)
	Sets the scaled frame size to size. More...

int	speed () const

MovieState	state () const
	Returns the current state of QMovie. More...

	~QMovie ()
	Destructs the QMovie object. More...

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 QObjectList &	children () 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< QByteArray >	dynamicPropertyNames () 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 >
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 QMetaObject *	metaObject () 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

QObject *	parent () 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...

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

QObjectUserData *	userData (uint id) const

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

Static Public Functions
static QList< QByteArray >	supportedFormats ()
	Returns the list of image formats supported by QMovie. More...

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)

Properties
CacheMode	cacheMode
	the movie's cache mode More...

int	speed
	the movie's speed More...

Additional Inherited Members
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...

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 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

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

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

The QMovie class is a convenience class for playing movies with QImageReader.

This class is used to show simple animations without sound. If you want to display video and media content, use the Phonon Module{Phonon} multimedia framework instead.

First, create a QMovie object by passing either the name of a file or a pointer to a QIODevice containing an animated image format to QMovie's constructor. You can call isValid() to check if the image data is valid, before starting the movie. To start the movie, call start(). QMovie will enter Running state, and emit started() and stateChanged(). To get the current state of the movie, call state().

To display the movie in your application, you can pass your QMovie object to QLabel::setMovie(). Example:

QLabel label;
QMovie *movie = new QMovie("animations/fire.gif");
label.setMovie(movie);
movie->start();

Whenever a new frame is available in the movie, QMovie will emit updated(). If the size of the frame changes, resized() is emitted. You can call currentImage() or currentPixmap() to get a copy of the current frame. When the movie is done, QMovie emits finished(). If any error occurs during playback (i.e, the image file is corrupt), QMovie will emit error().

You can control the speed of the movie playback by calling setSpeed(), which takes the percentage of the original speed as an argument. Pause the movie by calling setPaused(true). QMovie will then enter Paused state and emit stateChanged(). If you call setPaused(false), QMovie will reenter Running state and start the movie again. To stop the movie, call stop().

Certain animation formats allow you to set the background color. You can call setBackgroundColor() to set the color, or backgroundColor() to retrieve the current background color.

currentFrameNumber() returns the sequence number of the current frame. The first frame in the animation has the sequence number 0. frameCount() returns the total number of frames in the animation, if the image format supports this. You can call loopCount() to get the number of times the movie should loop before finishing. nextFrameDelay() returns the number of milliseconds the current frame should be displayed.

QMovie can be instructed to cache frames of an animation by calling setCacheMode().

Call supportedFormats() for a list of formats that QMovie supports.

See also: QLabel, QImageReader, {Movie Example}

Definition at line 74 of file qmovie.h.

Enumerations

◆ CacheMode

enum QMovie::CacheMode

This enum describes the different cache modes of QMovie.

CacheNone No frames are cached (the default).

CacheAll All frames are cached.

Enumerator
CacheNone
CacheAll

Definition at line 87 of file qmovie.h.

                    {
         CacheNone,
         CacheAll
     };

◆ MovieState

enum QMovie::MovieState

This enum describes the different states of QMovie.

NotRunning The movie is not running. This is QMovie's initial state, and the state it enters after stop() has been called or the movie is finished.

Paused The movie is paused, and QMovie stops emitting updated() or resized(). This state is entered after calling pause() or setPaused(true). The current frame number it kept, and the movie will continue with the next frame when unpause() or setPaused(false) is called.

Running The movie is running.

Enumerator
NotRunning
Paused
Running

Definition at line 82 of file qmovie.h.

                     {
         NotRunning,
         Paused,
         Running
     };

Constructors and Destructors

◆ QMovie() [1/3]

QMovie::QMovie ( QObject * parent = 0 )

Constructs a QMovie object, passing the parent object to QObject's constructor.

See also: setFileName(), setDevice(), setFormat()

Definition at line 616 of file qmovie.cpp.

     : QObject(*new QMoviePrivate(this), parent)
 {
     Q_D(QMovie);
     d->reader = new QImageReader;
     connect(&d->nextImageTimer, SIGNAL(timeout()), this, SLOT(_q_loadNextFrame()));
 }

◆ QMovie() [2/3]

QMovie::QMovie	(	QIODevice *	device,
		const QByteArray &	format = `QByteArray()`,
		QObject *	parent = `0`
	)

explicit

Constructs a QMovie object.

QMovie will use read image data from device, which it assumes is open and readable. If format is not empty, QMovie will use the image format format for decoding the image data. Otherwise, QMovie will attempt to guess the format.

The parent object is passed to QObject's constructor.

Definition at line 632 of file qmovie.cpp.

     : QObject(*new QMoviePrivate(this), parent)
 {
     Q_D(QMovie);
     d->reader = new QImageReader(device, format);
     d->initialDevicePos = device->pos();
     connect(&d->nextImageTimer, SIGNAL(timeout()), this, SLOT(_q_loadNextFrame()));
 }

◆ QMovie() [3/3]

QMovie::QMovie	(	const QString &	fileName,
		const QByteArray &	format = `QByteArray()`,
		QObject *	parent = `0`
	)

explicit

Constructs a QMovie object.

QMovie will use read image data from fileName. If format is not empty, QMovie will use the image format format for decoding the image data. Otherwise, QMovie will attempt to guess the format.

The parent object is passed to QObject's constructor.

Definition at line 649 of file qmovie.cpp.

     : QObject(*new QMoviePrivate(this), parent)
 {
     Q_D(QMovie);
     d->absoluteFilePath = QDir(fileName).absolutePath();
     d->reader = new QImageReader(fileName, format);
     if (d->reader->device())
         d->initialDevicePos = d->reader->device()->pos();
     connect(&d->nextImageTimer, SIGNAL(timeout()), this, SLOT(_q_loadNextFrame()));
 }

◆ ~QMovie()

QMovie::~QMovie ( )

Destructs the QMovie object.

Definition at line 663 of file qmovie.cpp.

 {
     Q_D(QMovie);
     delete d->reader;
 }

Functions

◆ backgroundColor()

QColor QMovie::backgroundColor ( ) const

Returns the background color of the movie.

If no background color has been assigned, an invalid QColor is returned.

See also: setBackgroundColor()

Definition at line 767 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->reader->backgroundColor();
 }

◆ cacheMode() [1/2]

CacheMode QMovie::cacheMode ( ) const

Referenced by setCacheMode(), and supportedFormats().

◆ cacheMode() [2/2]

CacheMode QMovie::cacheMode ( )

◆ currentFrameNumber()

int QMovie::currentFrameNumber ( ) const

Returns the sequence number of the current frame.

The number of the first frame in the movie is 0.

Definition at line 943 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->currentFrameNumber;
 }

◆ currentImage()

QImage QMovie::currentImage ( ) const

Returns the current frame as a QImage.

See also: currentPixmap(), updated()

Definition at line 844 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->currentPixmap.toImage();
 }

◆ currentPixmap()

QPixmap QMovie::currentPixmap ( ) const

Returns the current frame as a QPixmap.

See also: currentImage(), updated()

Definition at line 825 of file qmovie.cpp.

Referenced by QLabelPrivate::_q_movieUpdated(), and QLabelPrivate::sizeForWidth().

 {
     Q_D(const QMovie);
     return d->currentPixmap;
 }

◆ device()

QIODevice * QMovie::device ( ) const

Returns the device QMovie reads image data from.

If no device has currently been assigned, 0 is returned.

See also: setDevice(), fileName()

Definition at line 688 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->reader->device();
 }

◆ error

void QMovie::error ( QImageReader::ImageReaderError error )

signal

This signal is emitted by QMovie when the error error occurred during playback.

QMovie will stop the movie, and enter QMovie::NotRunning state.

◆ fileName()

QString QMovie::fileName ( ) const

Returns the name of the file that QMovie reads image data from.

If no file name has been assigned, or if the assigned device is not a file, an empty QString is returned.

See also: setFileName(), device()

Definition at line 715 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->reader->fileName();
 }

◆ finished

bool QMovie::finished ( )

signal

This signal is emitted when the movie has finished.

Use state() instead.

See also: QMovie::stop()

◆ format()

QByteArray QMovie::format ( ) const

Returns the format that QMovie uses when decoding image data.

If no format has been assigned, an empty QByteArray() is returned.

See also: setFormat()

Definition at line 743 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->reader->format();
 }

◆ frameChanged

void QMovie::frameChanged ( int frameNumber )

signal

This signal is emitted when the frame number has changed to frameNumber.

Since: 4.1

You can call currentImage() or currentPixmap() to get a copy of the frame.

◆ frameCount()

int QMovie::frameCount ( ) const

Returns the number of frames in the movie.

Certain animation formats do not support this feature, in which case 0 is returned.

Definition at line 923 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->frameCount();
 }

◆ frameRect()

QRect QMovie::frameRect ( ) const

Returns the rect of the last frame.

If no frame has yet been updated, an invalid QRect is returned.

See also: currentImage(), currentPixmap()

Definition at line 790 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->frameRect;
 }

◆ isValid()

bool QMovie::isValid ( ) const

Returns true if the movie is valid (e.g., the image data is readable and the image format is supported); otherwise returns false.

Definition at line 854 of file qmovie.cpp.

Referenced by QLabelPrivate::_q_movieUpdated().

 {
     Q_D(const QMovie);
     return d->isValid();
 }

◆ jumpToFrame()

bool QMovie::jumpToFrame ( int frameNumber )

Jumps to frame number frameNumber.

Returns true on success; otherwise returns false.

Definition at line 962 of file qmovie.cpp.

 {
     Q_D(QMovie);
     return d->jumpToFrame(frameNumber);
 }

◆ jumpToNextFrame

bool QMovie::jumpToNextFrame ( )

slot

Jumps to the next frame.

Returns true on success; otherwise returns false.

Definition at line 952 of file qmovie.cpp.

 {
     Q_D(QMovie);
     return d->jumpToNextFrame();
 }

◆ loopCount()

int QMovie::loopCount ( ) const

Returns the number of times the movie will loop before it finishes.

If the movie will only play once (no looping), loopCount returns 0. If the movie loops forever, loopCount returns -1.

Note that, if the image data comes from a sequential device (e.g. a socket), QMovie can only loop the movie if the cacheMode is set to QMovie::CacheAll.

Definition at line 977 of file qmovie.cpp.

 {
     Q_D(const QMovie);
     return d->reader->loopCount();
 }

◆ nextFrameDelay()

int QMovie::nextFrameDelay ( ) const

Returns the number of milliseconds QMovie will wait before updating the next frame in the animation.

Definition at line 933 of file qmovie.cpp.

Referenced by setPaused().

 {
     Q_D(const QMovie);
     return d->nextDelay;
 }

◆ resized

void QMovie::resized ( const QSize & size )

signal

This signal is emitted when the current frame has been resized to size.

This effect is sometimes used in animations as an alternative to replacing the frame. You can call currentImage() or currentPixmap() to get a copy of the updated frame.

◆ scaledSize()

QSize QMovie::scaledSize ( )

Returns the scaled size of frames.

Since: 4.1

See also: QImageReader::scaledSize()

Definition at line 1080 of file qmovie.cpp.

 {
     Q_D(QMovie);
     return d->reader->scaledSize();
 }

◆ setBackgroundColor()

void QMovie::setBackgroundColor ( const QColor & color )

For image formats that support it, this function sets the background color to color.

See also: backgroundColor()

Definition at line 755 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->reader->setBackgroundColor(color);
 }

◆ setCacheMode()

void QMovie::setCacheMode ( CacheMode mode )

Definition at line 1156 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->cacheMode = cacheMode;
 }

◆ setDevice()

void QMovie::setDevice ( QIODevice * device )

Sets the current device to device.

QMovie will read image data from this device when the movie is running.

See also: device(), setFormat()

Definition at line 675 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->reader->setDevice(device);
     d->reset();
 }

◆ setFileName()

void QMovie::setFileName ( const QString & fileName )

Sets the name of the file that QMovie reads image data from, to fileName.

See also: fileName(), setDevice(), setFormat()

Definition at line 700 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->absoluteFilePath = QDir(fileName).absolutePath();
     d->reader->setFileName(fileName);
     d->reset();
 }

◆ setFormat()

void QMovie::setFormat ( const QByteArray & format )

Sets the format that QMovie will use when decoding image data, to format.

By default, QMovie will attempt to guess the format of the image data.

You can call supportedFormats() for the full list of formats QMovie supports.

See also: QImageReader::supportedImageFormats()

Definition at line 731 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->reader->setFormat(format);
 }

◆ setPaused

void QMovie::setPaused ( bool paused )

slot

If paused is true, QMovie will enter Paused state and emit stateChanged(Paused); otherwise it will enter Running state and emit stateChanged(Running).

See also: state()

Definition at line 990 of file qmovie.cpp.

Referenced by start().

 {
     Q_D(QMovie);
     if (paused) {
         if (d->movieState == NotRunning)
             return;
         d->enterState(Paused);
         d->nextImageTimer.stop();
     } else {
         if (d->movieState == Running)
             return;
         d->enterState(Running);
         d->nextImageTimer.start(nextFrameDelay());
     }
 }

◆ setScaledSize()

void QMovie::setScaledSize ( const QSize & size )

Sets the scaled frame size to size.

Since: 4.1

See also: QImageReader::setScaledSize()

Definition at line 1096 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->reader->setScaledSize(size);
 }

◆ setSpeed

void QMovie::setSpeed ( int percentSpeed )

slot

Definition at line 1019 of file qmovie.cpp.

 {
     Q_D(QMovie);
     d->speed = percentSpeed;
 }

◆ speed()

int QMovie::speed ( ) const

Referenced by setSpeed().

◆ start

void QMovie::start ( )

slot

Starts the movie.

QMovie will enter Running state, and start emitting updated() and resized() as the movie progresses.

If QMovie is in the Paused state, this function is equivalent to calling setPaused(false). If QMovie is already in the Running state, this function does nothing.

See also: stop(), setPaused()

Definition at line 1040 of file qmovie.cpp.

 {
     Q_D(QMovie);
     if (d->movieState == NotRunning) {
         d->_q_loadNextFrame(true);
     } else if (d->movieState == Paused) {
         setPaused(false);
     }
 }

◆ started

void QMovie::started ( )

signal

This signal is emitted after QMovie::start() has been called, and QMovie has entered QMovie::Running state.

◆ state()

QMovie::MovieState QMovie::state ( ) const

Returns the current state of QMovie.

See also: MovieState, stateChanged()

Definition at line 778 of file qmovie.cpp.

Referenced by QLabel::setMovie().

 {
     Q_D(const QMovie);
     return d->movieState;
 }

◆ stateChanged

void QMovie::stateChanged ( QMovie::MovieState state )

signal

This signal is emitted every time the state of the movie changes.

The new state is specified by state.

See also: QMovie::state()

◆ stop

void QMovie::stop ( )

slot

Stops the movie.

QMovie enters NotRunning state, and stops emitting updated() and resized(). If start() is called again, the movie will restart from the beginning.

If QMovie is already in the NotRunning state, this function does nothing.

See also: start(), setPaused()

Definition at line 1060 of file qmovie.cpp.

 {
     Q_D(QMovie);
     if (d->movieState == NotRunning)
         return;
     d->enterState(NotRunning);
     d->nextImageTimer.stop();
     d->nextFrameNumber = 0;
 }

◆ supportedFormats()

QList< QByteArray > QMovie::supportedFormats ( )

static

Returns the list of image formats supported by QMovie.

Since: 4.1

See also: QImageReader::supportedImageFormats()

Definition at line 1112 of file qmovie.cpp.

 {
     QList<QByteArray> list = QImageReader::supportedImageFormats();
     QMutableListIterator<QByteArray> it(list);
     QBuffer buffer;
     buffer.open(QIODevice::ReadOnly);
     while (it.hasNext()) {
         QImageReader reader(&buffer, it.next());
         if (!reader.supportsAnimation())
             it.remove();
     }
     return list;
 }

◆ updated

void QMovie::updated ( const QRect & rect )

signal

This signal is emitted when the rect rect in the current frame has been updated.

You can call currentImage() or currentPixmap() to get a copy of the updated frame.

Properties

◆ cacheMode

QMovie::CacheMode QMovie::cacheMode

private

the movie's cache mode

Caching frames can be useful when the underlying animation format handler that QMovie relies on to decode the animation data does not support jumping to particular frames in the animation, or even "rewinding" the animation to the beginning (for looping). Furthermore, if the image data comes from a sequential device, it is not possible for the underlying animation handler to seek back to frames whose data has already been read (making looping altogether impossible).

To aid in such situations, a QMovie object can be instructed to cache the frames, at the added memory cost of keeping the frames in memory for the lifetime of the object.

By default, this property is set to CacheNone .

See also: QMovie::CacheMode

Warning: This function is not part of the public interface.

Definition at line 80 of file qmovie.h.

◆ speed

int QMovie::speed

private

the movie's speed

The speed is measured in percentage of the original movie speed. The default speed is 100%. Example:

QMovie movie("racecar.gif");

movie.setSpeed(200); // 2x speed

Definition at line 79 of file qmovie.h.

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

/src/gui/image/qmovie.h
/src/gui/image/qmovie.cpp

Public Types

Public Slots

Signals

Public Functions

Static Public Functions

Properties

Additional Inherited Members

Detailed Description

Enumerations

◆ CacheMode

◆ MovieState

Constructors and Destructors

◆ QMovie() [1/3]

◆ QMovie() [2/3]

◆ QMovie() [3/3]

◆ ~QMovie()

Functions

◆ backgroundColor()

◆ cacheMode() [1/2]

◆ cacheMode() [2/2]

◆ currentFrameNumber()

◆ currentImage()

◆ currentPixmap()

◆ device()

◆ error

◆ fileName()

◆ finished

◆ format()

◆ frameChanged

◆ frameCount()

◆ frameRect()

◆ isValid()

◆ jumpToFrame()

◆ jumpToNextFrame

◆ loopCount()

◆ nextFrameDelay()

◆ resized

◆ scaledSize()

◆ setBackgroundColor()

◆ setCacheMode()

◆ setDevice()

◆ setFileName()

◆ setFormat()

◆ setPaused

◆ setScaledSize()

◆ setSpeed

◆ speed()

◆ start

◆ started

◆ state()

◆ stateChanged

◆ stop

◆ supportedFormats()

◆ updated

Properties

◆ cacheMode

◆ speed