W3C home > Mailing lists > Public > www-style@w3.org > December 2013

Re: [compositing-1] Normative section

From: Tavmjong Bah <tavmjong@free.fr>
Date: Mon, 16 Dec 2013 14:41:49 +0100
Message-ID: <1387201309.488.215.camel@localhost.localdomain>
To: Rik Cabanier <cabanier@gmail.com>
Cc: www-style list <www-style@w3.org>, "public-fx@w3.org" <public-fx@w3.org>, www-svg <www-svg@w3.org>
On Sat, 2013-12-14 at 14:54 -0800, Rik Cabanier wrote:
> During last week's call [1] David Baron mentioned that the compositing
> and blending specification didn't declare the mathematical operations
> as normative.
> I went back over when I made this change but couldn't retrace why this
> was done (or who told me to do so).
> 
> 
> I agree with David that this should be declared normative and made
> changes to the editor's draft so those section are now normative [2].
> I also updated those sections to clarify what are notes, examples and
> required/normative behavior.
> 
> 
> Does anyone disagree with this change?
> If not, I would like to ask for another Last Call on the next SVG and
> CSS telecon with a duration of 4 weeks.

Sounds good.

> In addition, I also 
> - removed the paragraph on knockout (per Simon Fraser's request)
> - removed the section on clip-to-self and references to it (per James
> Robinson's and roc's request)
> - clarified section on SVG compositing and ordering of examples and
> figures (per Tav's request)

Examples numbering still skips numbers in Firefox (but not Chrome).
'class=example' occurs both on <div>s and the <img>s inside which
appears to mess up the auto-counting.


Minor editing quibbles:

Abstract:
Add period after: * compositing groups.

3.4:
<blend-mode> = .... should be broken into two lines so it doesn't run
off-screen.

Third example:
... element is causing ... ->
... element causes ...

3.4.2:
In CSS, a background ... ->
A CSS background image or the content of an <img> must...
[<img> is HTML, not CSS]

Question: what about <iframe>, <object>, <embed>?

3.4.3:
Subject/verb agreement:

... blend with the element's background layer that is below it ...   OR
... blend with the element's background layers that are below it ...

the element instead -> the element, instead

5. Note:
Shape either exists at a particular point or it does not. ->
A particular point is either inside the shape or it is not.

The note should be divided into two paragraphs; one for shape, one for
opacity.

10: Blending, example caption:

Note ... lowers. ->
Note how the rectangle is redder where the opacity of the background is
smaller. 

General:

I find the use of <br> in the middle of a <p> makes the spec more
difficult to read; for example, in 3.4.2 between the first and second
sentence. They should be removed or replaced by <p> depending on how
closely the material before and after is related.

Tav
Received on Monday, 16 December 2013 13:42:31 UTC

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