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

Re: [Backgrounds/Borders] What to do when a border-image fails to load

From: David Hyatt <hyatt@apple.com>
Date: Mon, 30 Mar 2009 17:28:52 -0500
Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, Andrew Fedoniouk <news@terrainformatica.com>, Anne van Kesteren <annevk@opera.com>, Bert Bos <bert@w3.org>, "www-style@w3.org list" <www-style@w3.org>
Message-id: <959BD250-BA38-4A3B-939D-2CE9AD3D9EDD@apple.com>
To: Brad Kemper <brad.kemper@gmail.com>
\On Mar 30, 2009, at 10:43 AM, Brad Kemper wrote:

>
> On Mar 30, 2009, at 8:23 AM, Tab Atkins Jr. wrote:
>
>> On Mon, Mar 30, 2009 at 10:05 AM, Brad Kemper  
>> <brad.kemper@gmail.com> wrote:
>>>
>>> On Mar 30, 2009, at 5:01 AM, Tab Atkins Jr. wrote:
>>>
>>>> On Mon, Mar 30, 2009 at 2:08 AM, Brad Kemper  
>>>> <brad.kemper@gmail.com>
>>>> wrote:
>>>>>
>>>>> On Mar 29, 2009, at 9:50 PM, Andrew Fedoniouk wrote:
>>>>>>
>>>>>> Sorry but border is not an outline either. E.g. outline does not
>>>>>> participate in hits testing. But border does. How you border  
>>>>>> image
>>>>>> solution will handle :hover state?
>>>>>
>>>>> Those are good questions. I suppose for simplicity anything  
>>>>> outside the
>>>>> border-box would not participate in hit testing or hover testing.
>>>>
>>>> This would also be a very good argument for still combining
>>>> border-radius with border-image; border-radius will clip the hit  
>>>> box,
>>>> which can be useful to match up with some border-image shapes.
>>>
>>> For hit-testing, yes. For clipping, no. If I have to chose between
>>> hit-testing and not having my image clipped by the radius, then I  
>>> prefer
>>> the latter. Consider an images like these:
>>>
>>> http://www.bradclicks.com/cssplay/border-image/borders.png
>>>
>>> In each case, it would be useful to have border-radius for  
>>> fallback, for
>>> background-clipping, and for hit/hover-testing, but not for  
>>> clipping the
>>> border-image.
>>
>> Certainly; I did not mean to imply otherwise.
>
> Actually, David Hyatt implied in a different thread a few days ago  
> that hit-testing was based fairly strictly on clipping, so I was  
> also incorporating that info into my reply to you, above. Maybe he  
> could find a way to clip the hit/hover-testing without clipping the  
> border though, as you and I would prefer.

This does raise the interesting question of whether the border image's  
(possibly larger) box should be considered for hit testing... or if it  
is a purely visual effect that should be completely ignored.  There's  
also the question of where outlines should render.

I'm not really sure what the right answer is here.

dave
(hyatt@apple.com)
Received on Monday, 30 March 2009 22:29:35 GMT

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