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Re: [css3-content] sizing of images inserted using the content property

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 23 Nov 2011 08:40:01 -0800
Message-ID: <CAAWBYDB9_4akgdSD3DvjVK-dwpgTHq8=rFTLQF9i4fCxJmiqaw@mail.gmail.com>
To: "L. David Baron" <dbaron@dbaron.org>
Cc: Boris Zbarsky <bzbarsky@mit.edu>, www-style@w3.org
On Wed, Nov 23, 2011 at 8:29 AM, L. David Baron <dbaron@dbaron.org> wrote:
> On Monday 2011-11-21 08:19 -0500, Boris Zbarsky wrote:
>> On 11/21/11 7:44 AM, Florian Rivoal wrote:
>> >Section "8. Replaced content" says that when the content introduced by
>> >content: is a single url, then the element or pseudo element is a
>> >replaced element.
>>
>> This happens to not be compatible with what the "content" property
>> does in CSS 2.1, for what it's worth....
>
> I think you're misinterpreting what it says, or at least what it
> intended to say (since I think there's a section missing... though
> I'm having a bit of trouble reading the spec due to the obsoletion
> notice).

If Firefox supported <details>, you'd be able to dismiss the notice.  ^_^


> http://dev.w3.org/csswg/css3-content/#inserting-and-replacing-content-with-the
> describes the value of 'content' as:
>
>  [ [ <uri> | icon ] ‘,’ ]* [ normal | none | inhibit | <content-list> ]
>
> url() values can appear in two different places in this syntax:
> before a "," or inside of <content-list>.  When they appear before a
> "," they are treated as a replaced element (as the spec describes).
> When they appear inside of <content-list>, they are processed under
> the CSS 2.1 model and are not a replaced element.  (This bit is less
> clear because some of the subsections under <content-list> appear to
> be missing.)
>
> If 'content' contains a single url(), the only way to make the value
> fit the grammar is by making that url() part of the <content-list>
> production, in which case it is not treated as a replaced element.

Is this a desirable pattern?


On Wed, Nov 23, 2011 at 8:35 AM, Boris Zbarsky <bzbarsky@mit.edu> wrote:
> On 11/23/11 11:29 AM, L. David Baron wrote:
>> If 'content' contains a single url(), the only way to make the value
>> fit the grammar is by making that url() part of the<content-list>
>> production, in which case it is not treated as a replaced element.
>
> Ah, ok.  That makes sense, and seems backwards-compatible.  Is that what
> WebKit and Opera actually implement, though?

Not WebKit.  We currently make "div { content: url(foo); }" turn the
div into a replaced element.

~TJ
Received on Wednesday, 23 November 2011 16:40:49 GMT

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