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Re: [css3-images] element() "ignoring" transforms

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Mon, 5 Mar 2012 10:46:30 -0800
Message-ID: <CAAWBYDCEgch7-Or4tc3oy4-92rEB=xaSD2oUBDRowr3KRrvuFw@mail.gmail.com>
To: Øyvind Stenhaug <oyvinds@opera.com>
Cc: "www-style@w3.org" <www-style@w3.org>
On Mon, Mar 5, 2012 at 9:47 AM, Øyvind Stenhaug <oyvinds@opera.com> wrote:
> Regarding the eleemnt() function, CSS3 Images says
>
> "If the referenced element has a transform applied to it or an ancestor,
> the transform must be ignored when rendering the element as an image.
> [[!CSS-TRANSFORMS]]"
>
> I think it's probably worth detailing what it means for a transform to be
> "ignored". Should it be as if the transform property were 'none'? Note
> that this would have some additional effects, since a transformed element
> normally acts as a containing block for fixed-position descendants, for
> instance (even if it's just an identity transform).

I should specify that.  The intent is similar to how SVG defines this
kind of thing; that a "virtual" transform that's the inverse of the
CTM is applied after the element's transform.  Thus, the side-effects
you get from transforming the element (like becoming a fixpos
container) are still preserved.

~TJ
Received on Monday, 5 March 2012 18:47:18 GMT

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