Re: different scope of view in UI design on Canvas

http://lists.w3.org/Archives/Public/public-canvas-api/2010JanMar/0147.html

There are three methods for handling clicks: using a bitmap (trading cpu 
for ram), using an object with bounding box coordinates,
or using the browser's hit testing and layering the elements atop of the 
canvas.

Paniz, very few authors are using Canvas for elements, at this time.

-Charles

On 9/24/2011 10:57 AM, Frank Olivier wrote:
>
> Not sure I understand your question…
>
> I sent an example to the canvas a11y discussion a while ago – 
> basically, the author has to handle onclick events on the canvas 
> element, and then set the state of the radio/checkbox so that the 
> screen reader can read that. Likewise, when the screen reader changes 
> the radio/checkbox state, the author show redraw the canvas element to 
> indicate the new state.
>
> Thanks
> Frank
>
> *From:*paniz alipour [mailto:alipourpaniz@gmail.com]
> *Sent:* Saturday, September 24, 2011 1:51 AM
> *To:* Charles Pritchard; Canvas; Richard Schwerdtfeger; Steve 
> Faulkner; Frank Olivier; Benjamin Hawkes-Lewis; Cynthia Shelly
> *Subject:* different scope of view in UI design on Canvas
>
> Hello All,
>
> I was thinking about a problem if you had a button a checkbox a radio 
> button in Canvas ,
>
> How would you handle click events of each one of them? I need to know 
> different scope of view and your thought in programming.
>
> please tell me.
>
> Thanks in advance
>
> -- 
> Paniz Alipour
>