W3C home > Mailing lists > Public > www-style@w3.org > April 2009

Re: Possible problem with rounded corners

From: David Hyatt <hyatt@apple.com>
Date: Thu, 30 Apr 2009 12:06:50 -0500
Cc: Niels Matthijs <niels.matthijs@internetarchitects.be>, www-style@w3.org
Message-id: <6AAD2433-80AA-46B3-9760-53BCA5408190@apple.com>
To: Brad Kemper <brad.kemper@gmail.com>
https://bugs.webkit.org/show_bug.cgi?id=9543 ?

I assume overflow != visible implies you clip, but that otherwise you  
don't clip.


On Apr 30, 2009, at 9:47 AM, Brad Kemper wrote:

> The Working Draft does say say nested items are to be clipped, but  
> so far I don't think any implementations are doing that yet. It was  
> a more recent change to the Working Draft (a few months ago, as I  
> recall), and not without some small disagreement from an  
> implementor. Eventually, implementors will adjust to the change and  
> implement that part as written, or if no one does then it will be  
> marked as "at risk" and eventually taken out of the final spec.
> On Apr 30, 2009, at 5:37 AM, Niels Matthijs wrote:
>> (repost of my question/remark, apparently the original message was  
>> posted in a different thread. Excuse my lack of knowledge of  
>> mailing lists and threaded mails, Iíll try to pay more attention  
>> next time)
>> I was experimenting with the border-radius implementation of  
>> Firefox and WebKit and ran into some problems. I checked the ccs3  
>> specs but couldn't find anything about it, so I'll guess I'll just  
>> post this here. Again, my apologies if this problem was already  
>> raised before and is being worked on right now.
>> The problem occurs when elements are nested inside a container with  
>> rounded corners. The background of the container behaves well, but  
>> the nested elements are still rectangles. So when they are given a  
>> background-color, they overlap the rounded corners.
>> I made a very simple test page, with a horizontal navigation (4  
>> rounded corners) and hover color on the links in the list items.  
>> Just hover over the first list item to see the undesired effect.
>> http://www.onderhond.com/testpages/rounded-corners.html
>> It would be a real shame if this behaviour would still exist when  
>> we could finally use the property, as workarounds to fix this are  
>> pretty crappy and really mess up the css.
>> Greets,
>> Niels Matthijs
>> Internet Architects

Received on Thursday, 30 April 2009 17:07:33 UTC

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