Re: hit testing and retained graphics

Paniz,

Along with my team, I've implemented all of these widget types in Canvas.
They can be marked up with form elements or with general html elements
and WAI-ARIA roles in the shadow dom.

There is an issue, however: currently, ATs are not made aware of the 
bounding
rectangles of such elements until/unless the element is in focus.

Other than that, they work the same as other widgets, and supply the same
information to the OS.

-Charles

On 7/7/2011 6:41 AM, paniz alipour wrote:
> Hi Richard,
>
> I mean for example I have an interaction UI on canvas as like web pages,
>
> textbox,radiobutton ,checkbox,.... .I want to know these elements that 
> are drawn or are images on canvas
>
> could be incredible,Of course they can but in your opinion how many 
> percent it is possible(forexample checkbox with height 70 and width 70)
>
> Best Regards
>
> On Thu, Jul 7, 2011 at 6:02 PM, Richard Schwerdtfeger 
> <schwer@us.ibm.com <mailto:schwer@us.ibm.com>> wrote:
>
>     Hi Paniz,
>
>     I am not quite following you. Could you please provide more detail?
>
>     Thanks,
>
>
>     Rich
>
>
>     Rich Schwerdtfeger
>     CTO Accessibility Software Group
>
>     Inactive hide details for paniz alipour ---07/07/2011 06:32:18
>     AM---Hello to all, Maybe you think that this question is not
>     relpaniz alipour ---07/07/2011 06:32:18 AM---Hello to all, Maybe
>     you think that this question is not related to this discussion,
>
>     From: paniz alipour <alipourpaniz@gmail.com
>     <mailto:alipourpaniz@gmail.com>>
>     To: Richard Schwerdtfeger/Austin/IBM@IBMUS
>     Cc: chuck@jumis.com <mailto:chuck@jumis.com>, franko@microsoft.com
>     <mailto:franko@microsoft.com>, Mike@w3.org <mailto:Mike@w3.org>,
>     david.bolter@gmail.com <mailto:david.bolter@gmail.com>,
>     cyns@exchange.microsoft.com <mailto:cyns@exchange.microsoft.com>,
>     public-canvas-api@w3.org <mailto:public-canvas-api@w3.org>,
>     public-html-a11y@w3.org <mailto:public-html-a11y@w3.org>,
>     public-html@w3.org <mailto:public-html@w3.org>
>     Date: 07/07/2011 06:32 AM
>
>     Subject: Re: hit testing and retained graphics
>     ------------------------------------------------------------------------
>
>
>
>     Hello to all,
>
>     Maybe you think that this question is not related to this discussion,
>
>     But I want to know whether the web widget that are located on canvas,
>
>     are they incredible .I mean a check box with height 70,weight 70,
>
>     or no it will design as the common web widget on websites?
>
>     Thanks
>
>     On Fri, Jun 17, 2011 at 11:11 PM, Richard Schwerdtfeger
>     <_schwer@us.ibm.com_ <mailto:schwer@us.ibm.com>> wrote:
>
>           Charles, Frank, Mike,
>
>           I am back from vacation. How far do we need to go with hit
>           testing? Right now I am looking at associating a closed draw
>           path with a DOM object in the canvas subtree. We would then
>           need to address the routing of pointing device input events
>           to the DOM object. The drawing path can be used to provide
>           bound information to platform accessibility API.
>
>           Do we need to bind any other drawing properties to the
>           canvas object - similar to the way device context's are
>           handled on graphic subsystems like Windows?
>
>           Mike, I am including you as before I went on vacation you
>           indicated that a number of developers desired this feature
>           and wanted to be involved.
>
>           Rich
>
>
>           Rich Schwerdtfeger
>           CTO Accessibility Software Group 
>
>
>
>
>
>     -- 
>     Paniz Alipour
>
>
>
>
> -- 
> Paniz Alipour