Re: [css-compositing] remove specific isolation behavior for SVG?

On Jun 12, 2013, at 4:33 AM, Rik Cabanier <cabanier@gmail.com> wrote:

> How would you define it for SVG since it has no concept of a 'stacking context'?
> For HTML, you eventually end up at the 'elaborate description of stacking contexts' but there is no such thing for SVG.

You can add it to the SVG specification :) (And in fact we should add it to the third edition of SVG 1.1 and at some point to CSS directly.) However, this doesn't even matter for compositing at the moment. For compositing it is necessary to say that every property which creates a stacking context does also create an isolation group. And all the listed properties in Compositing do create a stacking context. That's it.

Dirk

> 
> 
> Rik
> 
> On Wed, Jun 12, 2013 at 4:08 AM, Dirk Schulze <dschulze@adobe.com> wrote:
> Hi,
> 
> I would like to ask to remove the specific behavior of the 'isolation' property[1] in CSS compositing. At the moment this property links to and HTML [2] and and SVG [3] section. First of all, this limits compositing to just HTML and SVG. This is not the sense of CSS. Second, reading the sections, this should really be defined by the individual specs. I think we should just use the definition used in the HTML section. Filter Effects, CSS Transforms and CSS Masking already define that a stacking context is created (for all elements).
> 
> However, I do believe that a simple note of all elements that create a stacking context (until the time being of the spec of course) can be useful for authors. The list does not need to be complete, but cover most common properties. This note would be useful for HTML and SVG authors in the same way.
> 
> Greetings,
> Dirk
> 
> [1] https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#isolation
> [2] https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#csscompositingrules_CSS
> [3] https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#csscompositingrules_SVG
>

Received on Wednesday, 12 June 2013 11:49:18 UTC