Since: BlackBerry 10.0.0

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A class that can be used to control the animation of an animated image (typically a .gif animation).

Here's how to use the image animator in C++:

Here's how to use the image animator from QML:

Overview

bb::cascades::BaseObject

bb::cascades::ImageAnimator

animatedImage	: bb::cascades::Image
playing	: bool
running	: bool [read-only]
started	: bool
objectName	: QString
parent	: QObject [read-only]

onAnimatedImageChanged	: {}
onPlayingChanged	: {}
onRunningChanged	: {}
onStartedChanged	: {}
onCreationCompleted	: {}
onObjectNameChanged	: {}

QVariant	animatedImage
bool	playing
bool	running [read-only]
bool	started
QString	objectName
QObject	parent [read-only]

ImageAnimator(QObject *parent=0)
virtual	~ImageAnimator()
bb::cascades::Image	animatedImage() const
bool	isPlaying() const
bool	isRunning() const
bool	isStarted() const
Q_SLOT void	resetAnimatedImage()
Q_SLOT void	resetPlaying()
Q_SLOT void	resetStarted()
Q_SLOT void	setAnimatedImage(const bb::cascades::Image &image)
Q_SLOT void	setPlaying(bool playing)
Q_SLOT void	setStarted(bool started)
Q_SLOT void	start()
Q_SLOT void	stop()
Q_SLOT void	stopAt(bb::cascades::ImageAnimatorAnchor::Type anchor, bb::cascades::ImageAnimatorSeekMode::Type seekMode=bb::cascades::ImageAnimatorSeekMode::Default)
void	setObjectName(const QString &name)
virtual Q_INVOKABLE QString	toDebugString() const

Only has inherited protected functions

BaseObject(QObject *parent=0)

void	animatedImageChanged(const bb::cascades::Image &animatedImage)
void	playingChanged(bool playing)
void	runningChanged(bool running)
void	startedChanged(bool started)
void	creationCompleted()
void	objectNameChanged(const QString &objectName)

QVariant

The image that the animator is currently controlling.

bool

Specifies whether the attached image should animate or not.

This property is deprecated in favor of the started property

bool

A read-only property that specifies whether the attached image is currently animating or not.

When this property is changed the runningChanged() signal will be emitted.

Due to the asynchronous nature of Cascades, changing the started property or invoking play(), stop() or stopAt() will not change this property immediately. This property will only be changed after the image has actually stopped animating.

bool

Specifies whether the attached image should animate or not.

Changing this property informs the attached image to start or stop playing, and emits the startedChanged() signal.

Setting this property to true has the same effect as invoking play(). Setting it to false has the same effect as invoking stop() or stopAt(ImageAnimatorAnchor::CurrentFrame, ImageAnimatorSeekMode::Immediate). Invoking play(), stop() or stopAt() will change this property immediately.

When an ImageAnimator is created, this property will have the value false, which means that any image attached to an unaltered animator will pause.

Due to the asynchronous nature of Cascades this property does not indicate whether the attached image is currently animating or not, but rather, if the image has been informed that it should animate or not. The running property can be used to find out if the currently attached image is actually animating.

QString

See also:

QObject::objectName().

QObject

A read-only property that represents this object's parent.

The parent of an object is specified using QObject::setParent(QObject*). The purpose of the property is to expose the object's parent to QML.

This property is read-only to prevent modifications from QML, where typically the parent is declaratively set. In C++ code, the parent can be explicitly set using QObject::setParent(QObject*), or implicitly set by adding it to a visual container.

The default value of this property is 0.

Parameters
parent	The parent of this object.

virtual

Destructor.

bb::cascades::Image

If no image is attached a null image will be returned.

Return:

The currently attached image, or a null image if no image is being animated.

bool

Since:

BlackBerry 10.0.0

bool

Since:

BlackBerry 10.0.0

bool

Since:

BlackBerry 10.0.0

Q_SLOT void

This will detach the currently attached image and attach a null image to the animator.

Q_SLOT void

Stops the animation by resetting the started state to false.

Q_SLOT void

When this function is called, the started state of the animator will be pushed to the image. The running state of the image will be pushed to the animator.

An image can only be attached to one animator. If the image was already attached to an animator when this method is called, the image is detached from the old animator and attached to this one. A null image will be attached to the old animator.

When attaching a new image to an animator, the old image does not lose the started state that was pushed to it by the animator, but you cannot control it any longer with the animator.

Parameters
image	to attach to the animator

Q_SLOT void

Parameters
playing	true to start the animation, false to stop it.

Q_SLOT void

Parameters
started	If true the animation is started and if false the animation is stopped.

Q_SLOT void

Calling this function has the same effect as calling setStarted(true).

Q_SLOT void

Calling this function has the same effect as calling setStarted(false).

Q_SLOT void

Stops the animation of the attached image in a specified way.

This function can be used to stop the animation of the attached image at specific points in the animation.

How to use this function and how it relates to the started and running properties is illustrated in the following examples:

Example 1:

1. Invoke stopAt(ImageAnimatorAnchor::CurrentFrame, ImageAnimatorSeekMode::Immediate) or invoke stopAt(ImageAnimatorAnchor::CurrentFrame, ImageAnimatorSeekMode::Animate) while animation is running.

2. startedChanged(false) will be emitted immediately.

3. Cascades will stop the animation as soon as possible on the frame the animation is currently on and then runningChanged(false) will be emitted.

Example 2:

1. Invoke stopAt(ImageAnimatorAnchor::FirstFrame, ImageAnimatorSeekMode::Immediate) while animation is running.

2. startedChanged(false) will be emitted immediately.

3. Cascades will stop the animation as soon as possible, jumping to the first frame of the image animation and then runningChanged(false) will be emitted.

Example 3:

1. Invoke stopAt(ImageAnimatorAnchor::LastFrame, ImageAnimatorSeekMode::Immediate) while animation is running.

2. startedChanged(false) will be emitted immediately.

3. Cascades will stop the animation as soon as possible, jumping to the first frame of the image animation and then runningChanged(false) will be emitted.

Example 4:

1. Invoke stopAt(ImageAnimatorAnchor::FirstFrame, ImageAnimatorSeekMode::Animate) while animation is running.

2. startedChanged(false) will be emitted immediately.

3. Cascades will continue to run the animation until the first frame is shown, at which point runningChanged(false) will be emitted.

Example 5:

1. Invoke stopAt(ImageAnimatorAnchor::LastFrame, ImageAnimatorSeekMode::Animate) while animation is running.

2. startedChanged(false) will be emitted immediately.

3. Cascades will continue to run the animation until the last frame is shown, at which point runningChanged(false) will be emitted.

Example 6:

1. Invoke stopAt(ImageAnimatorAnchor::FirstFrame, ImageAnimatorSeekMode::Animate) while animation is not running and the first frame is not currently showing.

2. Cascades will emit runningChanged(true), run the animation until the first frame is shown, at which point runningChanged(false) will be emitted.

Example 7:

1. Invoke stopAt(ImageAnimatorAnchor::LastFrame, ImageAnimatorSeekMode::Animate) while animation is not running and the last frame is not currently showing.

2. Cascades will emit runningChanged(true), run the animation until the last frame is shown, at which point runningChanged(false) will be emitted.

void

Parameters
name	The new name for the object.

virtual Q_INVOKABLE QString

Since:

BlackBerry 10.0.0

(Only has inherited protected functions)

Parameters
parent	An optional parent, defaults to 0.

void

Parameters
animatedImage	The new Image that was attached to the animator

void

Emitted when the started state of the animator changes.

Parameters
playing	The new started state of the animator.

void

Emitted when the running state of the animator changes.

Parameters
running	The new running state of the animator.

void

Emitted when the started state of the animator changes.

Parameters
started	The new started state of the animator.

void

Emitted when this object is instantiated as a result of loading a QML document and creating the root node (only after the root component that caused this instantiation has completed construction), or when the object is being constructed from its builder class.

This signal indicates that the construction and initialization of the object has been completed, the properties are initialized, and any QML binding values have been assigned to the object.

This signal is not emitted when the object is constructed from C++ using the constructor. If the object is constructed using its builder class, the signal is emitted when the the builder class returns the fully constructed object.

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This signal can be used when there is an activity that needs to be performed, such as a property state integrity verification after the object is instantiated from a QML document or a builder, but before control is returned to the application.

Since:

BlackBerry 10.0.0

void

This signal is emitted when the objectName property is changed.

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