[Webkit-unassigned] [Bug 93467] Change ImageSource to be asynchronous.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=93467





--- Comment #14 from Huang Dongsung <luxtella at company100.net>  2012-08-10 02:29:47 PST ---
(In reply to comment #10)
> Created an attachment (id=157681)
 --> (https://bugs.webkit.org/attachment.cgi?id=157681&action=review) [details]
> Patch

The third patch is changed a lot. I described the details in the change log.

ImageSource::frameHasAlphaAtIndex can trigger image decoding again. BitmapImage always queries alpha without triggering image decoding, while SychronousImageSource always triggers image decoding to get alpha.
Clients can not use ImageSource directly. Clients can decode an image with BitmapImage or SychronousImageSource. We could change three methods of ImageSource this way after adding SychronousImageSource.

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