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RE: hit testing and retained graphics

From: Sean Hayes <Sean.Hayes@microsoft.com>
Date: Wed, 29 Jun 2011 14:23:37 +0000
To: "E.J. Zufelt" <everett@zufelt.ca>, Paul Bakaus <pbakaus@zynga.com>
CC: Tab Atkins Jr. <jackalmage@gmail.com>, John Foliot <jfoliot@stanford.edu>, Charles Pritchard <chuck@jumis.com>, Charles McCathieNevile <chaals@opera.com>, Richard Schwerdtfeger <schwer@us.ibm.com>, "Cameron McCormack" <cam@mcc.id.au>, Cynthia Shelly <cyns@microsoft.com>, "david.bolter@gmail.com" <david.bolter@gmail.com>, Frank Olivier <Frank.Olivier@microsoft.com>, "Mike@w3.org" <Mike@w3.org>, "public-canvas-api@w3.org" <public-canvas-api@w3.org>, "public-html@w3.org" <public-html@w3.org>, "public-html-a11y@w3.org" <public-html-a11y@w3.org>
Message-ID: <E9A92BD0A4FC934EB7935470A46D152405AA3C@DB3EX14MBXC307.europe.corp.microsoft.com>
It took me 5 minutes to find these examples of people "doing it wrong"
http://www.ericom.com/AccessNow_FAQs.asp
http://www.thinvnc.com/index.html
http://tge.stormwarestudios.com/example/2010-07-20/
http://bitterspring.net/webshifter/
https://www.lucidchart.com/
http://creativefan.com/20-shockingly-cool-html5-canvas-applications/

To suggest that a feature as powerful as canvas is not going to get used for general UI and is simply an enhanced image is frankly ludicrous.

-----Original Message-----
From: public-html-a11y-request@w3.org [mailto:public-html-a11y-request@w3.org] On Behalf Of E.J. Zufelt
Sent: 29 June 2011 14:50
To: Paul Bakaus
Cc: Tab Atkins Jr.; John Foliot; Charles Pritchard; Charles McCathieNevile; Richard Schwerdtfeger; Cameron McCormack; Cynthia Shelly; david.bolter@gmail.com; Frank Olivier; Mike@w3.org; public-canvas-api@w3.org; public-html@w3.org; public-html-a11y@w3.org
Subject: Re: hit testing and retained graphics

On 2011-06-29, at 9:33 AM, Paul Bakaus wrote:

> Hi everyone,
> 
> I absolutely agree with TJ here. I think a lot of people here are trying
> to solve theoretical issues right now, which is very dangerous. I have
> closely observed the canvas landscape, and there are very few production
> apps out there that could benefit largely from increased accessibility on
> the canvas object itself. Mostly, today's canvas applications are game
> demos and drawing apps.
> 
What about tomorrow?

> If you are writing your GUI in canvas, you are doing it wrong. If you are
> building a chart/graph and don't run the canvas visualization from data
> markup that was progressively enhanced, you are doing it wrong. Hell, even
> if today you are trying to create a full game on canvas, you are probably
> doing it wrong (unless you want really fancy particle fx and can live with
> a super small canvas size). Canvas *is* an enhanced <img>.
> 
And, when developers build a GUI on canvas, and therefore are "wrong", how will persons with certain disabilities access that GUI so that they can be full participants in the "wrongness", be it at school, work, or for entertainment?

Everett Zufelt
Received on Wednesday, 29 June 2011 14:24:15 UTC

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