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Re: Draft Revisions to Canvas 2D Context API to drive magnification

From: James Craig <jcraig@apple.com>
Date: Tue, 25 May 2010 10:31:41 -0700
Cc: david.bolter@gmail.com, Eric Carlson <eric.carlson@apple.com>, Frank Olivier <franko@microsoft.com>, "public-canvas-api@w3.org" <public-canvas-api@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>, public-html-a11y-request@w3.org, surkov.alexander@gmail.com
Message-Id: <66272C5A-6174-4986-A973-2D6347E0E60F@apple.com>
To: Richard Schwerdtfeger <schwer@us.ibm.com>
Richard Schwerdtfeger wrote:

> The group in attendance (per today's canvas accessibility call) determined that most accessibility APIs only provide a focus rectangle. Although the author can draw any shape they like it was agreed that when the the coordinates are passed for accessibility that they provided as a best fit rectangle. I will also make this all clear in the next draft for review.

I can live with that, but I'd like to request that the syntax be such that it can be extended in the future. e.g., "rect(x1, y1, x2, y2)" instead of just "x1, y1, x2, y2". 

Even if polygons are not supported in the first release, setting a finite coordinate syntax to only allow for one shape for would make it more difficult to change once the accessibility APIs are updated to allow for more precise focus shapes. 
Received on Tuesday, 25 May 2010 17:32:16 UTC

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