I'd use Jukka Manner's updated CFX_Image tag instead of the old CFX_GifGD
tag. It has support for progressive jpegs as far as I can tell, it also has
much more features.
----- Original Message -----
From: "Seth Petry-Johnson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, July 11, 2000 8:30 PM
Subject: Re: Thumbnail tags
> > I've been using cf_gifgd from the tag gallery
> > works good for me, but progressive jpg's will
> > break it. If anyone has any better solutions I'd
> > like to know also.
>
> I too have been stuck with cfx_gifgd and its problems with progressive
> JPEGs. I've looked, but haven't found anything that is a good replacement.
> If anyone knows of a good alternative, I too would be very interested.
>
> However, I do know how to test for progressive JPEGs before resizing them.
> The problem is that when CFX_GIFGD is called to resize a progressive JPEG
it
> causes the entire CF service to crash and restart, which is obviously a
bad
> thing. I don't know enough about JPEGs (or the CFX code) to know why this
> is.
>
> To ensure that this won't happen, use CFX_GIFGD to read the file before
you
> resize it. The READ action returns a series of variables about the image,
> one of which is the file type. If the image is a progressive JPEG the
type
> variable will contain an empty string. Just wrap the resize action in a
> CFIF that checks the length of the type variable.
>
> For example:
>
> <!--- check the file type --->
> <CFX_GIFGD ACTION="read" FILE="#yourFile#">
> <CFIF NOT Len(Trim(Variables.IMG_TYPE))>
> <!--- progressive JPEG! put some sort of error message here --->
> <CFELSE>
> <!--- image can be safely resized --->
> <CFX_GIFGD ACTION="resize" blah blah>
> </CFIF>
>
> Just a little workaround I discovered. Hope it helps.
>
> Regards,
> Seth Petry-Johnson
> Argo Enterprise and Associates
>
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