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Re: Announcement: Last Call WD of SVG 1.1 Second Edition

From: Erik Dahlstrom <ed@opera.com>
Date: Wed, 02 Feb 2011 11:21:07 +0100
To: "Robert O'Callahan" <robert@ocallahan.org>
Cc: "Doug Schepers" <schepers@w3.org>, "www-svg@w3.org" <www-svg@w3.org>
Message-ID: <op.vp9tphc4geuyw5@localhost>
On Thu, 24 Jun 2010 12:03:15 +0200, Robert O'Callahan  
<robert@ocallahan.org> wrote:

...
> Rule 1 isn't enough. You need rule 2, or something like it, as well.
>
> Rob

You're right. What I really meant was, why should raster images get this  
special treatment in svg at all? My guess is that this particular  
specialcase[1] is largely unused today. I'd therefore like to open up  
discussion on an alternative proposal, which is to simply drop the special  
handling for raster images with alpha in the pointer-event definition[2]  
in SVG 1.1 Second Edition. However, a thing to note is that filters aren't  
meant to affect pointer-events processing at all, for the purposes of hit  
detection it's as if there was no filter applied [2].

Anyway, thanks for bringing this up again, via  
http://weblogs.mozillazine.org/roc/archives/2011/02/distinguishing.html.

Another question, does html:img have similar issues now that Firefox can  
apply filters to html content?

Cheers
/Erik

[1] Case being: alpha=0 raster image in svg, used together with  
pointer-events=painted
[2]  
http://dev.w3.org/SVG/profiles/1.1F2/publish/interact.html#PointerEventsProperty

-- 
Erik Dahlstrom, Core Technology Developer, Opera Software
Co-Chair, W3C SVG Working Group
Personal blog: http://my.opera.com/macdev_ed
Received on Wednesday, 2 February 2011 10:21:43 GMT

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