Re: hit testing and retained graphics

Hi All,

I have a question:

What are the reasons that cause a developer use Canvas for designing
interactive UI (I mean a UI like what we see on a usual webpage )?

Best Regards

On Sat, Jul 2, 2011 at 6:02 PM, Benjamin Hawkes-Lewis <
bhawkeslewis@googlemail.com> wrote:

> On Sat, Jul 2, 2011 at 1:30 PM, Steve Faulkner <faulkner.steve@gmail.com>
> wrote:
> > just been looking at canvas based http://demo.ericomaccessnow.com/(requires
> > websockets enabled browser, works fine in chrome)
> >
> > In regards to use with screen magnifcation software, The above product
> does
> > not provide information about current focus, so screen magnifiers cannot
> > track focus, do you think there is a solution for that?
>
> Would using a remote screen magnifier not work?
>
> If not, why not?
>
> How do people using screen magnification with native remote access
> software today?
>
> It looks like they either a) use remote magnification software:
>
> http://www.aisquared.com/forums/viewtopic.php?f=7&t=499
>
> although it looks like there are technical problems with this that
> need to be resolved by AT vendors/remote desktop access software:
>
> http://www.aisquared.com/forums/viewtopic.php?f=13&t=1141
>
> https://discussions.apple.com/thread/2034004?start=0&tstart=0
>
> or, b) they use local magnification software and do without tracking:
>
> http://www.aisquared.com/forums/viewtopic.php?f=13&t=944
>
> I don't see why this needs to change when canvas is used for the
> visuals rather than a native graphics API?
>
> (Specifically, it sounds like less work to fix the technical problems
> I mentioned above than to duplicate the whole work of the
> accessibility stack in some sort of complex conversion from remote
> platform APIs to DOM to local platform accessibility APIs to local
> interface.)
>
> --
> Benjamin Hawkes-Lewis
>
>


-- 
Paniz Alipour