RE: HTML 5 Canvas Accessibility Call on January 10

My apologies; I won’t be able to attend the meeting on Monday (Traveling)

At this point, the IE team does not think that text editing via canvas is a problem that we should tackle for HTML5 due to the inherent complexities of the problem and limited options to solve this correctly. The best solution for HTML5 (via tooling, education, author guidance) is to not fake text entry via canvas elements – much better native mechanisms for text editing already exist in HTML5.

Thanks
Frank

From: Richard Schwerdtfeger [mailto:schwer@us.ibm.com]
Sent: Friday, January 07, 2011 7:36 PM
To: Shawn Warren; Tim Lalor
Cc: chuck@jumis.com; janina@rednote.net; public-canvas-api@w3.org; Frank Olivier; david.bolter@gmail.com; Cynthia Shelly; public-html-a11y@w3.org; oedipus@hicom.net
Subject: RE: HTML 5 Canvas Accessibility Call on January 10


Shawn, Tim,

That is excellent. We are pleased AI Squared is able to attend the call.

The call-in information and agenda are here:

http://lists.w3.org/Archives/Public/public-canvas-api/2011JanMar/0002.html


You will note that we also run an IRC channel where people will be taking minutes. You can use use the free chatzilla plug-in to Firefox to participate.

The W3C IRC server is:

irc://irc.w3.org:6665


The chat room is #html-a11y

As an FYI you will see at the bottom of the page above an attached file called canvaseditor.html This file shows how we are using a shadow DOM to populate platform accessibility APIs for user drawn check boxes. A problem is the lack of accurate positioning information. Some of which is addressed in the change proposal (caret and focus ring) to the Canvas 2D Context API calls. The proposed changes to the Canvas 2D API specification are marked between <zzz> and </zzz> sections. Currently the DOM Accessibility API mapping of the shadow DOM (this is all the elements that are children of the <canvas> element in HTML) only is done in Beta versions of the IE 9 browser. The shadow DOM is also participates in the keyboard navigation of HTML in the IE 9 implementation.

Frank and David it will be very helpful if you are able to attend the call on Monday.

Best Regards,
Rich


Rich Schwerdtfeger
CTO Accessibility Software Group

[Inactive hide details for "Shawn Warren" ---01/07/2011 10:57:26 AM---Well I don't know much...about a lot of things really ;)..]"Shawn Warren" ---01/07/2011 10:57:26 AM---Well I don't know much...about a lot of things really ;)...but I usually do know who to ask. I secur

From: "Shawn Warren" <swarren@aisquared.com<mailto:swarren@aisquared.com>>
To: Richard Schwerdtfeger/Austin/IBM@IBMUS
Cc: <janina@rednote.net<mailto:janina@rednote.net>>, <chuck@jumis.com<mailto:chuck@jumis.com>>, <public-canvas-api@w3.org<mailto:public-canvas-api@w3.org>>, "Tim Lalor" <tlalor@aisquared.com<mailto:tlalor@aisquared.com>>
Date: 01/07/2011 10:57 AM
Subject: RE: Canvas Accessibility

________________________________



Well I don’t know much…about a lot of things really ;)…but I usually do know who to ask. I secured time from a senior engineer, Tim Lalor (CC), for your next Monday meeting (1/10).

Thanks,
Shawn

From: Richard Schwerdtfeger [mailto:schwer@us.ibm.com]
Sent: Thursday, January 06, 2011 7:48 PM
To: Shawn Warren
Cc: janina@rednote.net<mailto:janina@rednote.net>; chuck@jumis.com<mailto:chuck@jumis.com>; public-canvas-api@w3.org<mailto:public-canvas-api@w3.org>
Subject: Canvas Accessibility

Hi Shawn,

I am not sure how much you know about HTML 5 <canvas> but requiring authors to provide positioning information for all the content found in canvas is a very expensive proposition. I am not sure we are going to be able to get that to fly with authors. Would you be willing to discuss options on how we can get you what you need for a Monday HTML Canvas Accessibility Meeting?

This is response to your email response to my question in December:
http://lists.w3.org/Archives/Public/public-canvas-api/2011JanMar/0000.html


The canvas accessibility meeting runs at 2pm CST on Mondays for an hour.

Best Regards,

Rich


Rich Schwerdtfeger
CTO Accessibility Software Group