RE: hit regions

Is that proposal written up somewhere?

> -----Original Message-----
> From: Charles Pritchard [mailto:chuck@jumis.com]
> Sent: Sunday, August 19, 2012 4:12 PM
> To: Leonard Rosenthol
> Cc: Rik Cabanier; Chaals McCathieNevile; public-html@w3.org
> Subject: Re: hit regions
> 
> The proposal put forward by Hixie-Atkins was pixel based. Our proposals
> from the canvas working group did not specify pixel-based mapping.
> 
> 
> 
> On Aug 19, 2012, at 3:57 PM, Leonard Rosenthol <lrosenth@adobe.com>
> wrote:
> 
> > Also, using pixel-based hit regions can be problematic when anti-aliasing
> and transparency are considered...
> >
> > Leonard
> >
> > -----Original Message-----
> > From: Rik Cabanier [mailto:cabanier@adobe.com]
> > Sent: Sunday, August 19, 2012 6:18 PM
> > To: 'Chaals McCathieNevile'; public-html@w3.org
> > Subject: RE: hit regions
> >
> > Thanks!
> > It seems that hit regions can contain more accessibility information than
> image maps. Since people are building complex programs with Canvas, it
> probably needs more metadata.
> > I will read up more on issue 105 on the mailing list archive.
> >
> > Studying the spec some more, I realize now that hit regions are allowed to
> overlap, but the second one always knocks out the first one.
> > This seems expensive since you will have to either store bunch of bitmaps,
> or do a bunch of planar mapping code to figure out the paths.
> > I think a parent region will also not be notified if the child is clicked.
> >
> > Rik
> >> -----Original Message-----
> >> From: Chaals McCathieNevile [mailto:w3b@chaals.com]
> >> Sent: Sunday, August 19, 2012 4:00 AM
> >> To: public-html@w3.org; Rik Cabanier
> >> Subject: Re: hit regions
> >>
> >> On Sun, 19 Aug 2012 06:21:35 +0200, Rik Cabanier
> <cabanier@adobe.com>
> >> wrote:
> >>
> >>> I've been looking at the hit regions API and have some questions.
> >> [...]
> >>> 3.       There is nothing specific to canvas about hit regions. Would it
> >>> make sense to extend them later to other content such as images?
> >>
> >> Images have had image maps for a decade and a half already. ISSUE-105
> >> asked if it made sense to go the other way around, and extend that to
> >> canvas, but it seems that wheel wasn't the right colour.
> >>
> >> cheers
> >>
> >> Chaals
> >>
> >> --
> >> Chaals - standards declaimer
> >
> >

Received on Monday, 20 August 2012 00:06:48 UTC