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SVG12: feature strings vs "supports"

From: Bjoern Hoehrmann <derhoermi@gmx.net>
Date: Mon, 04 Jul 2005 04:26:48 +0200
To: www-svg@w3.org
Message-ID: <431b9e65.483154296@smtp.bjoern.hoehrmann.de>

Dear Scalable Vector Graphics Working Group,

  http://www.w3.org/TR/2005/WD-SVGMobile12-20050413/feature.html seems
to be quite inconsistent with respect to feature strings for attributes
and properties. For example, image-rendering, shape-rendering, and text-
rendering have associated feature strings but color-rendering does not.

More generally, it is not clear when requiredFeatures for a given string
would return true; that some attributes have feature strings seems to
imply that it might be possible for an implementation to return true for
http://www.w3.org/Graphics/SVG/feature/1.2/#Shape even though it does
not support http://www.w3.org/Graphics/SVG/feature/1.2/#PaintAttribute
it is however not clear whether this is the case.

For http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-all it is not clear
whether http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static-DOM must
return true aswell, the draft only notes that all the features that
correspond to the latter must be supported; the definition for
http://www.w3.org/Graphics/SVG/feature/1.2/#SVG notes "At least one of
the following" must be supported, clearly that would be satisfied if an
implementation returns true for #SVG-all but not for #SVG-static-DOM.

http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static-DOM for example
corresponds to the <script> and <handler> elements. It is not clear when
these are considered "supported", does it mean that the user agent can
successfully ignore the elements, or that it supports one language
binding for use with these elements and all SVG uDOM features?

Please change the draft such that all of this is explicitly defined.

regards,
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon: +49(0)621/4309674 · http://www.bjoernsworld.de
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Received on Monday, 4 July 2005 02:26:55 GMT

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