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

Re: Image sprites use cases

From: Brad Kemper <brad.kemper@gmail.com>
Date: Sun, 30 Aug 2009 18:20:24 -0700
Message-Id: <D9718168-4788-4B0C-93FB-A676014698A6@gmail.com>
To: Boris Zbarsky <bzbarsky@MIT.EDU>
Cc: Alex Kaminski <activewidgets@gmail.com>, "Tab Atkins Jr." <jackalmage@gmail.com>, "www-style@w3.org" <www-style@w3.org>
On Aug 30, 2009, at 5:27 PM, Boris Zbarsky <bzbarsky@MIT.EDU> wrote:

> Brad Kemper wrote:
>> .xp .checkbox.normal.small { background-image: url(xp/checkbox/ 
>> small.png#xywh=0,0,10,10); }
>> .true{ background-image: url(#xywh=25,0,10,10); }
> ...
>> That is, the hash part (#xywh=25,0,10,10) only changes the area  
>> within the image, it does not change which file is loaded from the  
>> server.
> That would break backwards compatibility; right now the latter is  
> clearly pointing to the base URI of the stylesheet, per all the  
> relevant URI RFCs...

But since the URL of the stylesheet is not an especially useful thing  
to hang a hash value (or whatever that's actually called) on, I was  
thinking it would be more like the path and filename would form  
something like a "base URL" for a property, once it was assigned to  
that property to indicate an image file. If CSS declared this to be  
the case, would it really be a problem for the RFCs or any existing  
style sheets? 
Received on Monday, 31 August 2009 01:21:12 UTC

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