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CANVAS Sub-Meeting 2010-04-19 -- to hold or not to hold?

From: Gregory J. Rosmaita <oedipus@hicom.net>
Date: Mon, 19 Apr 2010 15:39:33 +0100
To: cooper@w3.org, david.bolter@gmail.com, Frank Olivier <franko@microsoft.com>, Janina Sajka <janina@rednote.net>, Steven Faulkner <faulkner.steve@gmail.com>
Cc: public-canvas-api@w3.org, public-html-a11y@w3.org
Message-Id: <20100419143508.M11991@hicom.net>
aloha, fellow-members of the HTML A11y TF Canvas Sub-Group!

although RichS will not be available to chair today's scheduled Canvas 
conference call, there is the matter of the "Draft Revisions to Canvas 
2D Context API", to be discussed and refined; the draft is archived at:


RichS identified a few areas of concentration, in particular, upon which 
he required targetted feedback before the proposal can be forwarded to 
the main Task Force and ultimately to the HTML WG; RichS' cover letter 
with his targetted enquiries can be found at:


and is quoted below:

David Bolter: From the Firefox perspective we still need to see that the 
caret/selection location can be properly mapped to the accessibility API 
as is. Currently, the caret position is a logical one in IA2 and I believe 
the caret pixel position is calculated from the character font offset and the 
bounding rectangle of the text. We may need to move the system caret. I am 
trying to find the old Windows API for that.

Frank: Please see if we can map the pixel position accurately, when 
provided, from the accessibility API. Windows used to have an MSAA 
notification for driving a  magnifier based on screen position. I don't 
know if this is still used when using UIA Express.

Maciej or James: Same question for Mac regarding the caret/selection 

please respond to this email to signal whether or not you would be able 
to attend the Canvas sub-group meeting today; you can find the local 
time for the Canvas sub-group meeting using the following link:


and you can find out more about Canvas Sub-group meeting times, schedules 
and other pertinent info at:


if we don't convene today, 19 April 2010, it is imperative that those whom RichS

directly addressed with questions on the draft, reply to RichS on list so that we

can move forward as expeditiously as possible,

thanks, gregory.

Received on Monday, 19 April 2010 14:40:42 UTC

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