> I retrieve the image from the
> imgIRequest using imgIContainer::EnsureCleanFrame.
I don't think that function does what you think it does.
A quick MXR search[1] shows that it's only called once in Mozilla code
-- from inside the JPEG decoder -- so unless you're implementing
something like a JPEG decoder, you probably don't want that function. :)
Do you have an imgIDecoderObserver implementation in your application?
I think you'll need one of those, in order to get notifications about
when the image has finished loading & decoding. See in particular
OnStartContainer and OnStopDecode. For a sample implementation of those
methods, see nsImageListener (which just forwards the methods along to
identically-named methods in nsImageFrame). [2]
Joe or bholley could probably offer the best help here, but first I
think they'd need more information about what you're trying to achieve.
I'm CC'ing them, but it'd help if you could post back in a bit more
detail about what you're trying to do and what you've got so far.
Good luck,
~Daniel
[1] http://mxr.mozilla.org/mozilla-central/search?string=EnsureCleanFrame
[2]
http://mxr.mozilla.org/mozilla-central/source/layout/generic/nsImageFrame.h#75
http://mxr.mozilla.org/mozilla-central/source/layout/generic/nsImageFrame.cpp#2047
On 03/08/2011 06:51 PM, yakobom wrote:
Hi,
I hope this is the right place to get some answers on this issue.
In my embedding application (Windows, C++) I'm using
imgILoader::LoadImage to fetch images. I retrieve the image from the
imgIRequest using imgIContainer::EnsureCleanFrame. The problem is
that
I can only get JPG images, PNG ones come out black.
Any ideas?
I would appreciate any help, this is quite urgent.
Thanks,
yakobom
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