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RE: [css3-background] clarify which properties in this module apply to ::first-letter and ::first-line

From: Brian Manthos <brianman@microsoft.com>
Date: Tue, 27 Mar 2012 23:25:32 +0000
To: fantasai <fantasai.lists@inkedblade.net>, "www-style@w3.org" <www-style@w3.org>
Message-ID: <9710FCC2E88860489239BE0308AC5D171294D3F1@TK5EX14MBXC264.redmond.corp.microsoft.com>
I think the #-referenced quote below is pretty clear:  conformance requires not applying box-shadow to first-line.  At least one implementation (IE9) respects that conformance requirement.

And now we're considering changing conformance requirements because we want another new shiny?  Sounds like the responsible choice is to consider it for CSS4 rather than throwing another grenade at CSS3.

I'm not sure that's what you're asking though.

-Brian

-----Original Message-----
From: fantasai [mailto:fantasai.lists@inkedblade.net] 
Sent: Tuesday, March 27, 2012 3:00 PM
To: www-style@w3.org; Brian Manthos
Subject: Re: [css3-background] clarify which properties in this module apply to ::first-letter and ::first-line

On 03/07/2012 02:03 PM, Brad Kemper wrote:
> On Mar 6, 2012, at 5:31 PM, "Kang-Hao (Kenny) Lu"<kennyluck@csail.mit.edu>  wrote:
<http://lists.w3.org/Archives/Public/www-style/2012Mar/0133.html>
> [... explanation of how this is unclear ...]
>> (A side question out of curiosity: the spec says
>>
>>   # The ‘box-shadow’ property applies to the ‘::first-letter’
>>   # pseudo-element, but not the ‘::first-line’ pseudo-element.
>>
>> So, does this mean UA MUST NOT apply 'box-shadow' to '::first-line' 
>> or UA MAY apply 'box-shadow' to '::first-line' (because of CSS2.1) ? 
>> )
>
> I don't know what the reasoning was for that. It seems to me that 
> anything which does not affect layout geometry of anything outside 
> itself should be allowed for first line and first letter, and we 
> should say that. This would then include border-radius, box-shadow, 
> text-shadow, border-image, outline, pointer-events, opacity, etc. and maybe even position.

This makes sense to me. So for this module the proposed lists would be

Applies to ::first-line -
   All background properties
   All border-radius properties
   All border-image properties
   box-shadow

Does not apply to ::first-line
   All border properties from CSS2.1.
   box-decoration-break

And all properties would apply to ::first-letter.

Brian, do you have any comment on that?

~fantasai

Received on Tuesday, 27 March 2012 23:26:38 GMT

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