- From: Richard Schwerdtfeger <schwer@us.ibm.com>
- Date: Thu, 3 Jun 2010 13:06:14 -0600
- To: Steven Faulkner <faulkner.steve@gmail.com>
- Cc: david.bolter@gmail.com, Frank Olivier <franko@microsoft.com>, Janina Sajka <janina@rednote.net>, Maciej Stachowiak <mjs@apple.com>, "public-canvas-api@w3.org" <public-canvas-api@w3.org>, public-html-a11y@w3.org
- Message-ID: <OF26C7AD14.578B7692-ON86257737.0068D0C2-86257737.0068F088@us.ibm.com>
Steve, You grabbed an old copy of the document: Please review: (See attached file: 2dcontext10-May-26.html) Rich Schwerdtfeger CTO Accessibility Software Group Steven Faulkner <faulkner.steve@g mail.com> To Richard 06/01/2010 12:55 Schwerdtfeger/Austin/IBM@IBMUS PM cc Maciej Stachowiak <mjs@apple.com>, Frank Olivier <franko@microsoft.com>, Janina Sajka <janina@rednote.net>, "public-canvas-api@w3.org" <public-canvas-api@w3.org>, public-html-a11y@w3.org, david.bolter@gmail.com Subject Re: Fw: Draft Revisions to Canvas 2D Context API to drive magnification hi rich, editorial: remove second 'is' "If the drawCustomRing argument is true, then the author is wishes to draw a custom focus ring around the element in which case the user agent will only draw the focus ring if the user has specifally configured the operating sytem to draw focus rings in a particular manner in which case the author would not be approved to draw a custom focus ring. (For example, high contrast focus rings.) " the rest looks good to me. regards steve On 29 April 2010 22:25, Richard Schwerdtfeger <schwer@us.ibm.com> wrote: Hi Maciej, I have not heard back from Apple on this proposal. Please take a look at the proposal (attached HTML file) and let me know if this will work for the Mac. I think I addressed your issues and would like your feedback. We have an MSAA API call on Windows which we can call to set the Caret Position so that a magnifier can can follow it which can be used by IE and FF. I don't know if you have a similar API for the Mac where the selection position could drive the magnifier. Thanks, Rich Rich Schwerdtfeger CTO Accessibility Software Group ----- Forwarded by Richard Schwerdtfeger/Austin/IBM on 04/29/2010 04:17 PM ----- Richard Schwerdtfeger/Austin/IBM @IBMUS Sent by: public-canvas-api-reques To t@w3.org Frank Olivier <franko@microsoft.com>, Janina Sajka <janina@rednote.net>, " 04/11/2010 06:49 PM public-canvas-api@w3.org" < public-canvas-api@w3.org>, Steven Faulkner <faulkner.steve@gmail.com>, public-html-a11y@w3.org, david.bolter@gmail.com cc Subject Draft Revisions to Canvas 2D Context API Sorry it took so long for me to get this draft out. Too much traveling going on. Please take a look and provide feedback. The edits reflect: - Separate caret/selection from drawFocusRing http://lists.w3.org/Archives/Public/public-html/2010Mar/0502.html. The Mac does not support caret tracking during selection so this needed to be allotted for. - Expose the caret blink rate via 2D canvas API. Frank indicated Windows has a 500 millisecond defult blink rate a. Carl Carlson (Apple) indicated a default blink rate of 560 milliseconds. I provided information for authors regarding average default blink rates should the value returned be negative 1. - Change the name of canDrawCustom and clean up its definiton which according to Maciej is "want to draw custom unless Special Focus Ring Setting is in Effect" http://lists.w3.org/Archives/Public/public-html/2010Mar/0363.html 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 position. (See attached file: 2dcontext10-Apr-11.html) Rich Schwerdtfeger CTO Accessibility Software Group(See attached file: 2dcontext10-Apr-11.html) -- with regards Steve Faulkner Technical Director - TPG Europe Director - Web Accessibility Tools Consortium www.paciellogroup.com | www.wat-c.org Web Accessibility Toolbar - http://www.paciellogroup.com/resources/wat-ie-about.html
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Received on Thursday, 3 June 2010 19:07:37 UTC