imgIContainerObserver 编辑

image/public/imgIContainerObserver.idlScriptable An interface to implement to listen to activities on an imgIContainer object. 1.0 66 Introduced Gecko 1.7 Inherits from: nsISupports Last changed in Gecko 12.0 (Firefox 12.0 / Thunderbird 12.0 / SeaMonkey 2.9)

If you wish to listen for activities on an imgIContainer, you should implement the frameChanged() method.

Method overview

void frameChanged(in imgIRequest aRequest, in imgIContainer aContainer, [const] in nsIntRect aDirtyRect); Native code only!

Methods

Native code only!

frameChanged

Called when the frame for an image container has changed.

void frameChanged(
  in imgIRequest aRequest,
  in imgIContainer aContainer,
  [const] in nsIntRect aDirtyRect
);

Parameters

aRequest

The image request for which the change occurred.

aContainer

The image container that changed.

aDirtyRect

A rectangle indicating the portion of the image container that changed.

Notes

The aRequest parameter was added to this method in Gecko 12.0 (Firefox 12.0 / Thunderbird 12.0 / SeaMonkey 2.9).

See also

• imgIDecoderObserver
• imgIContainer