W3C home > Mailing lists > Public > public-html@w3.org > April 2011

Re: Working Group Decision on ISSUE-131 caret-location-api

From: Ian Hickson <ian@hixie.ch>
Date: Fri, 29 Apr 2011 18:48:05 +0000 (UTC)
To: Jonas Sicking <jonas@sicking.cc>
cc: Maciej Stachowiak <mjs@apple.com>, Richard Schwerdtfeger <schwer@us.ibm.com>, HTMLWG WG <public-html@w3.org>
Message-ID: <Pine.LNX.4.64.1104291847350.25791@ps20323.dreamhostps.com>
On Fri, 29 Apr 2011, Jonas Sicking wrote:
> 
> Hixie pointed out to me that my canvas code was totally wrong. Here is
> a better description of what I mean:
> 
> The current (pre applying WG decision) syntax:
> 
> // Example A
> cx.beginPath();
> cx.rect(x,y,w,h);
> cx.drawFocusRing(elem);
> 
> This would draw a OS-styled focus ring on the coordinates x,y,w,h as
> well as tell AT that focus is currently located at those coordinates
> as to enable it to magnify that part of the screen if desired.
> 
> What I'm proposing is that we enable the following syntax *as well*:
> 
> // Example B
> cx.beginPath();
> cx.rect(x,y,w,h);
> cx.drawFocusRing(elem);
> cx.setCaretSelectionRect(elem,x-10,y-10,w+20,h+20);
> 
> This would draw the focus ring on the coordinates x,y,w,h but tell AT
> that a somewhat larger area is what needs to be magnified.
> 
> However, if someone just writes the code as in example A, it would
> still inform AT that x,y,w,h is the area that should be magnified.
> I.e. authors will *by default* get AT behavior that will work in most
> cases, while still allowing advanced authors can opt in and override
> that behavior using the more powerful feature set.
> 
> We could possibly also add an additional boolean argument to
> drawFocusRing that tells the function to *just* draw the focus right,
> but not inform AT of a new magnification area. But I'm less sure that
> that is a feature that anyone has requested.

As far as I can tell, this is exactly what the patch I proposed to 
implement the decision that the chairs made does.

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Friday, 29 April 2011 18:48:29 UTC

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