Re: ordering of effects with enable-background:new and filter on the same element

On Thu, Jun 5, 2008 at 2:45 PM, Robert O'Callahan <robert@ocallahan.org>
wrote:

> Context: http://www.w3.org/TR/SVG/filters.html#AccessingBackgroundImage
>
> The text says "Find the element Ai with the smallest subscript i (including
> A0=E) for which the 'enable-background' property has the value new." So that
> seems to mean that the search for the nearest enclosing element with
> enable-background:new starts with the current element. So if an element has
> enable-background:new and a 'filter', then usage of "BackgroundImage" within
> the filter will get a transparent black background. Is this intentional? It
> seems less useful, and less in the spirit of the rest of the section,


The testcase below draws green on Opera, so it looks like Opera is starting
the enable-background:new search from the parent. So please change the spec
to clearly identify that as the correct behaviour.

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg xmlns="http://www.w3.org/2000/svg" style="enable-background:new;">
  <defs>
    <filter id="f1" filterUnits="objectBoundingBox" x="0" y="0" width="100%"
height="100%">
      <feFlood flood-color="black" result="black"/>
      <feComposite in="BackgroundImage" operator="over"/>
    </filter>
  </defs>
  <rect x="100" y="100" width="100" height="100" fill="lime"/>
  <rect x="100" y="100" width="100" height="100" filter="url(#f1)"
style="enable-background:new;"/>
</svg>

Rob
-- 
"He was pierced for our transgressions, he was crushed for our iniquities;
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