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ISSUE-2045 (fallback): Consider adding fallback behavior [SVG Core 2.0]

From: SVG Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Mon, 1 Sep 2008 22:47:26 +0000 (GMT)
To: public-svg-wg@w3.org
Message-Id: <20080901224726.3D3016B62B@tibor.w3.org>


ISSUE-2045 (fallback): Consider adding fallback behavior [SVG Core 2.0]

http://www.w3.org/Graphics/SVG/WG/track/issues/2045

Raised by: Cameron McCormack
On product: SVG Core 2.0

Some newly added wording in Tiny 1.2 was removed in favour of it being moved to Core.  The markup was:

<li id="fallback">If an element in the <a href="intro.html#TermRenderingTree"><span class="svg-term">rendering tree</span></a> (e.g., <a href="struct.html#UseElement"><span class="element-name">'use'</span></a>, <a href="struct.html#ImageElement"><span class="element-name">'image'</span></a>, <a href="multimedia.html#AnimationElement"><span class="element-name">'animation'</span></a>, <a href="multimedia.html#AudioElement"><span class="element-name">'audio'</span></a>, <a href="multimedia.html#VideoElement"><span class="element-name">'video'</span></a>) contains a invalid reference, the user agent must display instead any fallback content supplied as a child of the element, in the following order of preference: any element in the <a href="intro.html#TermRenderingTree"><span class="svg-term">rendering tree</span></a> which does not contain invalid references, or its child content that matches the same criteria; or the contents of any <a href="struct.html#TitleElement"><span class="element-name">'title'</span></a> or <a href="struct.html#DescElement"><span class="element-name">'desc'</span></a> element.  If no adequate fallback content is supplied, the user agent should provide a placeholder rectangle or image with the position and dimensions specified by the element's attributes, if specified, or custom dimension otherwise, and the name of the invalid resource as visible text or as a tooltip.  If fallback content is rendered, the user agent may display an outline of the content, to indicate that the primary element contained an invalid resource.  For more details, see the <a href="intro.html#TermBoundingBox"><span class="svg-term">bounding box</span></a> definition.</li>
Received on Monday, 1 September 2008 22:47:59 UTC

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