Re: HTML 5 Canvas Accessibility Call on January 10

Where is the IE team on implementing the drawFocusRing and caret mechanisms? Our hope, as web developers, is that those methods be made available for a11y purposes.

Even the cursor semantics (notably, blink rate) are useful for our applications, apart from text editing.


On Jan 10, 2011, at 7:15 AM, Frank Olivier <Frank.Olivier@microsoft.com> wrote:

> 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
> 
> "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>
> To: Richard Schwerdtfeger/Austin/IBM@IBMUS
> Cc: <janina@rednote.net>, <chuck@jumis.com>, <public-canvas-api@w3.org>, "Tim Lalor" <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; chuck@jumis.com; 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