- From: Joshue O Connor <joshue.oconnor@cfit.ie>
- Date: Thu, 22 Nov 2007 16:50:41 +0000
- To: Richard Schwerdtfeger <schwer@us.ibm.com>
- CC: James Graham <jg307@cam.ac.uk>, Anne van Kesteren <annevk@opera.com>, HTML WG <public-html@w3.org>, public-html-request@w3.org
Hi Rich, > What we are looking at longer term is a way for users to pass preferences > along with device and user agent preferences to a source or intermediary to > select alternatives. Resource meta data would be used to describe the > resource in terms of user preferences. This is a bit beyond this example > but here are some use cases [...] It this in the context of using SVG as a way of describing fall back/alternate content (am using terms interchangeably, apologies in advance)? So if so, using SVG allows the author, to mark up content and the user can via some kind of preference in a user agent such as a screen reader or other AT define how they would like to have that content be served to them? That sounds really good to me if so. > One alternative does not fit all even though a fallback may be an > improvement for some. > I am concerned that we would advocate using canvas over SVG where we > would have an opportunity to apply semantics to the base drawing, Does <canvas> (if I am correct in my first sentence) allow various kinds of fall back content to serve different user needs also? Or is it a case of "Can't see the video" here a text equivalent rather like <img>? Is <canvas> a "one piece of fall back/alternate content" element? This is a tricky issue. I have seen some cool things done with <canvas> but am unsure of if whether it is suitable as a mechanism to serve the needs of AT users. This is an interesting juncture as the multimedia explosion on the web means that we been to define elements that can deal with very complex and varying modalities. Unless the web gets 'stolen' by some proprietary platform that can do all this stuff, and better that HTML5. Am undecided myself about <canvas> vs SVG but I do know that SVG has been around longer and has functionality that I just don't know if it is possible with <canvas>. If anyone knows - please enlighten me. Cheers Josh [1] http://www.w3.org/TR/SVG-access/
Received on Thursday, 22 November 2007 16:51:18 UTC