Re: Additional value for the visibility property

On Jul 9, 2008, at 4:43 PM, Andrew Fedoniouk wrote:

>
> David Hyatt wrote:
>> On Jul 9, 2008, at 3:53 PM, Andrew Fedoniouk wrote:
>>
>>>
>>> In fact it should be rendered as this:
>>> http://terrainformatica.com/w3/opacity-probe-rendering.png
>>> as opacity is not inherited by default (so div.kid is not  
>>> transparent).
>>
>> We cannot change this.  I do not understand why you are just  
>> bringing this up now.   The vendor prefixes were dropped from  
>> opacity ages ago.  It's done.
> What specification was used for implementing this? That is a point.
> I doubt that any existing designs rely on the fact that opacity  
> establishes new stacking context. So you can change this.
>

opacity is used heavily in OS X, both in Dashboard widgets and in apps  
that use WebKit.  It has been deployed for years.   Even if we could  
change it, I don't think we should, since I think having opacity  
follow the document tree is much more natural than having it follow  
the containing block hierarchy.

dave
(hyatt@apple.com)