IE 6 gif transparency problem

Hi,

Not sure if this is relevant in this situation, but we've
forced
transparency on .png images in IE 6 with this CSS:

.myclass {
      background: none;
      filter:progidXImageTr
ansform.Microsoft.AlphaImageLoader(sizingMethod=scale,
src='http://www.mysite.c
om/myimage.png');
}

Just mentioning it in case it helps. Not sure if it would
work for
GIFs or not to be honest.

Cheers,
David



On 08/04/2008, Sven Passig <svenpassig.net> wrote:
>
> Preview Images in Plone are linked as:
>
> src="filename.gif/image_preview"
>
> The transparent color in "filename.gif" is
not displayed transparent but
> grey in IE 6. The reason seams to be the missing suffix
in the image name.
> IE doasn't seach for a transpareny in images without a
".gif" ending.
> Is there a fix for that behavior. It would be nice when
Plone could work
> with something like:
>
> src="filename.gif/image_preview.gif"
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>
>


-- 
David Little

-e: davidlittled.net
-w: www.littled.net

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David Little wrote:
> .myclass {
>       background: none;
>      
filter:progidXImageTr
ansform.Microsoft.AlphaImageLoader(sizingMethod=scale,
> src='http://www.mysite.c
om/myimage.png');
> }

Don't use the sizingMethod=scale, though, because that will
shrink/stretch
the image (non-proportionally) to the dimension of the
image.
Check out this:
htt
p://msdn2.microsoft.com/en-us/library/ms532920(VS.85).as
px

-- 
Simone Deponti (shywolf9982)


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On 08/04/2008, Simone Deponti <shywolf9982gmail.com> wrote:
> Don't use the sizingMethod=scale, though, because that
will shrink/stretch
>  the image (non-proportionally) to the dimension of the
image.
>  Check out this:
>  htt
p://msdn2.microsoft.com/en-us/library/ms532920(VS.85).as
px

Ah, that's interesting -- didn't know what "scale"
was for, but that
makes sense. We've just used it for semi-transparent
overlays placed
over images (e.g. http://www.bbk.ac.uk/). In
this case we did want to
stretch the image which is probably why it's there (think we
just
copied it from a CSS book!).

Cheers,
David

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On Tue, 08 Apr 2008 00:38:19 -0700, Sven Passig  
<svenpassig.net> wrote:

> Preview Images in Plone are linked as:
>
> src="filename.gif/image_preview"
>
> The transparent color in "filename.gif" is
not displayed transparent
> but grey in IE 6.

There was a bug in the setup that caused PIL not to preserve
transparency  
when rescaling images. This has since been fixed. I'm pretty
sure it has  
nothing to do with the extension — but of course I could
be wrong. 

-- 
Alexander Limi · http://limi.net


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Hi Alexander,


> There was a bug in the setup that caused PIL not to
preserve  
> transparency when rescaling images. This has since been
fixed. I'm  
> pretty sure it has nothing to do with the extension —
but of course  
> I could be wrong. 

Firefox and Safari had no problems with the rescaled
images.

But thanks to your hint I figured out the real case of the
problem.  
PIL seams to convert GIF images into PNG images. When I
download a  
preview version of my image the image editor of my choice
told me,  
that it's a png image but the original file is a GIF (in
original size  
it looks good in IE).

I search a little bit in the plone documentation but can't
figure out  
where I can change that behavior.
By the way, I use the Plone 3.0.6

thanks a lot

Sven


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On Wed, 09 Apr 2008 00:58:27 -0700, Sven Passig  
<svenpassig.net> wrote:

> I search a little bit in the plone documentation but
can't figure out  
> where I can change that behavior.
> By the way, I use the Plone 3.0.6

The PIL documentation is probably where you have to look. I
have no  
knowledge about this personally, but saw some changes to
Plone flying by  
in the commit logs. 

-- 
Alexander Limi · http://limi.net


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