- 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
Attachments
- image/gif attachment: graycol.gif
- image/gif attachment: pic08280.gif
- image/gif attachment: ecblank.gif
- text/html attachment: 2dcontext10-May-26.html
Received on Thursday, 3 June 2010 19:07:38 UTC