[OpenLayers-Dev] PNG - AGG image, opacity and IE7

[Guillaume Sueur]

Kenneth Skovhede, GEOGRAF A/S a écrit :
> I have seen this as well. It happens whenever you set the "alpha" value 
> in IE7.
> It even happens if the value is set to 1.0, but a fix in OpenLayers 2.6 
> removes
> the "alpha" value if the opacity value is greater than 1.0.
> (OpenLayers.Util.modifyDOMElement line 191).
> 
> I'm fairly sure its an IE bug.


So am I ! Just wanted to kown if a kind of workaround was possible.

Guillaume


> 
> Regards, Kenneth Skovhede, GEOGRAF A/S
> 
> 
> 
> Guillaume Sueur skrev:
>> no, mapserver, but it's a typical client problem.
>> when the polygon is filled, it looks quite ok, because only the outline 
>> border is wrong, but with lines and labels, whaouh, so crap !
>> when opacity is 1 or format is standard PNG, the problem doesn't show up.
>>
>> Guillaume
>>
>> Zac Spitzer a écrit :
>>   
>>> was this using mapguide? I have seen similiar problems
>>>
>>> On Fri, Jul 18, 2008 at 12:11 AM, Guillaume Sueur
>>> <guillaume.sueur at neogeo-online.net> wrote:
>>>     
>>>> Hi devs,
>>>>
>>>> When displaying a WMS layer (AGG image) with some transparency on IE7,
>>>> it shows ugly grey pixels surrounding the borders. I guess it comes from
>>>> a mishandling of the antialiased pixels from AGG. Any trick to hold that ?
>>>>
>>>> Thanks
>>>>
>>>> Guillaume