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[css3-background] border-image-slice and the fill keyword

From: Rob Crowther <robertc@boogdesign.com>
Date: Sat, 31 Jul 2010 22:58:37 +0100
Message-ID: <4C549C8D.9070708@boogdesign.com>
To: www-style@w3.org
Hi All

The 12th June WD states, for the border-image-slice property:

"The ‘fill’ keyword, if present, causes the middle part of the 
border-image to be preserved. (By default it is discarded, i.e., treated 
as empty.)"

All current implementations, as far as I can see (I've checked Firefox, 
Chromium and Opera) implement only the combined border-image property 
from the 20080910 WD which has no definition for the fill keyword.  This 
would seem to be consistent with the dates when Mozilla and WebKit 
implemented it.

So my interpretation of the situation is that the browsers have 
implemented the 20080910 WD version and will be updating to match the 
final version of the spec when it gets agreed.  However, Opera have 
implemented border-image without a prefix following the 20080910 
behaviour in 10.50 and later.

There doesn't appear to have been too much discussion of border-image on 
this list recently, though there may have been before I joined it, but 
is it more likely we'll see the 20080910 version of border-image in the 
final Backgrounds & Borders Level 3, since that's what everyone seems to 
have implemented, or the current version?

If we will end up with the current version, am I interpreting the 
combined syntax correctly if provide fallback this way (assuming I have 
an appropriate image for '...':

-moz-border-image: url(...) 80 stretch;
-webkit-border-image: url(...) 80 stretch;
border-image: url(...) 80 fill stretch;

Note that including the fill keyword breaks Opera, so I won't be doing 
this in practical use any time soon.

Rob
Received on Saturday, 31 July 2010 21:59:06 GMT

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