Memory-managed wrapper type.

Type class for types which can be safely cast to PixbufAnimation, for instance with toPixbufAnimation.

Cast to PixbufAnimation, for types for which this is known to be safe. For general casts, use castTo.

A convenience alias for Nothing :: Maybe PixbufAnimation.

Queries the height of the bounding box of a pixbuf animation.

Get an iterator for displaying an animation. The iterator provides the frames that should be displayed at a given time. It should be freed after use with objectUnref.

startTime would normally come from getCurrentTime, and marks the beginning of animation playback. After creating an iterator, you should immediately display the pixbuf returned by pixbufAnimationIterGetPixbuf. Then, you should install a timeout (with g_timeout_add()) or by some other mechanism ensure that you'll update the image after pixbufAnimationIterGetDelayTime milliseconds. Each time the image is updated, you should reinstall the timeout with the new, possibly-changed delay time.

As a shortcut, if startTime is Nothing, the result of getCurrentTime will be used automatically.

To update the image (i.e. possibly change the result of pixbufAnimationIterGetPixbuf to a new frame of the animation), call pixbufAnimationIterAdvance.

If you're using PixbufLoader, in addition to updating the image after the delay time, you should also update it whenever you receive the area_updated signal and pixbufAnimationIterOnCurrentlyLoadingFrame returns True. In this case, the frame currently being fed into the loader has received new data, so needs to be refreshed. The delay time for a frame may also be modified after an area_updated signal, for example if the delay time for a frame is encoded in the data after the frame itself. So your timeout should be reinstalled after any area_updated signal.

A delay time of -1 is possible, indicating "infinite."

If an animation is really just a plain image (has only one frame), this function returns that image. If the animation is an animation, this function returns a reasonable thing to display as a static unanimated image, which might be the first frame, or something more sophisticated. If an animation hasn't loaded any frames yet, this function will return Nothing.

Queries the width of the bounding box of a pixbuf animation.

If you load a file with pixbufAnimationNewFromFile and it turns out to be a plain, unanimated image, then this function will return True. Use pixbufAnimationGetStaticImage to retrieve the image.

Creates a new animation by loading it from a file. The file format is detected automatically. If the file's format does not support multi-frame images, then an animation with a single frame will be created. Possible errors are in the GDK_PIXBUF_ERROR and G_FILE_ERROR domains.

Creates a new pixbuf animation by loading an image from an resource.

The file format is detected automatically. If Nothing is returned, then error will be set.

Since: 2.28

Creates a new animation by loading it from an input stream.

The file format is detected automatically. If Nothing is returned, then error will be set. The cancellable can be used to abort the operation from another thread. If the operation was cancelled, the error IOErrorEnumCancelled will be returned. Other possible errors are in the GDK_PIXBUF_ERROR and G_IO_ERROR domains.

The stream is not closed.

Since: 2.28

Creates a new animation by asynchronously loading an image from an input stream.

For more details see pixbufNewFromStream, which is the synchronous version of this function.

When the operation is finished, callback will be called in the main thread. You can then call pixbufAnimationNewFromStreamFinish to get the result of the operation.

Since: 2.28

Finishes an asynchronous pixbuf animation creation operation started with pixbufAnimationNewFromStreamAsync.

Since: 2.28