W3C

– DRAFT –
WCAG2ICT Task Force Teleconference

22 June 2023

Attendees

Present
bruce_bailey, Chuck, Daniel, Devanshu, FernandaBonnin, maryjom, mitch11, olivia, Sam, shadi, ShawnT
Regrets
Bryan Trogdon, Chris Loiselle, Loïc Martínez Normand, Mike Pluke, Phil Day, Thorsten Katzmann
Chair
Mary Jo Mueller
Scribe
Olivia

Meeting minutes

<Chuck> Thanks Olivia!

<Chuck> nononononononononono. And no. Don't run a meeting and scribe.

Announcements

maryjom: Announcements - Work slowly progressing. Lot of people out from sub groups.

maryjom: Did get surveys out this week

dmontalvo: Line and dotted line fix done

dmontalvo: Michael is still working on document changes. Let Mary Jo when to merge.

Project standup and planning

<maryjom> https://github.com/orgs/w3c/projects/13/views/2

maryjom: We are heavily working on Reflow with open surveys. Make sure you look at other issues with questions. Address concerns as well as proposing content.

maryjom: Just finished PR for Closed Sub-group. Look for email. Doing similar for text command. PR will hopefully be finished by EOD. May push off meeting tomorrow.

maryjom: Once we get in reflow in I am going to ask AGWG to approve for publication

Survey results: Pixel definition draft review

<maryjom> w3c/wcag2ict#162

<maryjom> https://www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results

maryjom: 1. Review and comparison of Note 1 & 2 in proposal 1 with Note 1 in proposal 2

maryjom: Slight preference with P2

maryjom: I proposed a amalgamation of the two

bruce_bailey: I like P1 because of direct reference to CSS reference pixel

Chuck: If it is not needed, would that mean you prefer Option 2?

bruce_bailey: yes

<maryjom> What exists in WCAG 2.2 for CSS pixel definition:

<maryjom> visual angle of about 0.0213 degrees

<maryjom> A CSS pixel is the canonical unit of measure for all lengths and measurements in CSS. This unit is density-independent, and distinct from actual hardware pixels present in a display. User agents and operating systems should ensure that a CSS pixel is set as closely as possible to the CSS Values and Units Module Level 3 reference pixel [css3-values], which takes into account the physical dimensions of the display and the assumed viewing distan[CUT]

<maryjom> be determined by content authors).

<bruce_bailey> /www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq1/permalink//www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq1

<bruce_bailey> https://www.w3.org/TR/WCAG22/#dfn-css-pixels

<bruce_bailey> s/permalink: https://www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq1/ permalink

maryjom: To answer question, there is already a link to that. Maybe that changes my proposal a little bit.

<maryjom> Note 1: Non-web software and its accompanying platform software do not use CSS pixel measurements. Therefore, platform-defined density-independent pixel measurements which approximate the CSS reference pixel should be used. Examples of platform-defined density-independent pixel measurements include: points (pt) in iOS and macOS, density-independent pixels (dp) for Android, and effective pixels (epx) for Windows.

<bruce_bailey> +1 for combination

mitch11: I like "approximate" - the pixels aren't all to the hundredth place. I see that you included Note 2. I think it helps us cover all the bases.

mitch11: Is EPX actually defined?

Sam: EPX is defined in Microsoft documentation

Sam: I like note 1, but note 2 still complicated.

<Sam> 1/96 of an inch px

<bruce_bailey> +1 for "approximate"

<Sam> THe meeting ended?

<Chuck> yep seems so

<Chuck> going back in.

<dmontalvo> -me needs to go for another meeting. Double-checking if you are able to continue without me

<maryjom> my meeting went away.

<FernandaBonnin> same, and I cannot join again?

<Sam> A meeting host or co host needs to join and let people in the meeting

<Chuck> I'm trying to join, but not letting me.

<mitch11> what bruce said, same issue for me

<Chuck> We could jump on another zoom, but we really ought not put the link in irc.

<Sam> I am also unable to join. it says the meet host has another meeting

<shadi> jump to https://www.w3.org/2017/08/telecon-info_ag

<Chuck> +1 for ag zoom

FernandaBonnin: I do not have problem with word approximate. Should verify examples.

mitch11: I have verified for iOS and Android. For Mac and Windows we should re-verify. Matter of whether viewing distance is reasonable.

bruce_bailey: Do we want to try and ping guy who has commented on contrast and pixels? Or anyone on CSS group?

<maryjom> Proposed note 1: Note 1: Non-web software and its accompanying platform software do not use CSS pixel measurements. Therefore, platform-defined density-independent pixel measurements which approximate the CSS reference pixel should be used. Examples of platform-defined density-independent pixel measurements include: points (pt) in iOS and macOS, density-independent pixels (dp) for Android, and effective pixels (epx) for Windows.

<bruce_bailey> yes, Chris Lilley

<maryjom> Poll: Are you all ok with Note 1, provided the examples given do approximate the CSS pixel for the given platforms.

<FernandaBonnin> +1

+1

<mitch11> +1

<bruce_bailey> +1

<ShawnT> +1

<Devanshu> +1

<maryjom> +1

<Sam> +1

<maryjom> Draft resolution: Incorporate Note 1, as above, provided the examples given do approximate the CSS pixel for the given platforms.

<bruce_bailey> +1

<FernandaBonnin> +1

+1

<mitch11> +1

<maryjom> +1

<ShawnT> +1

<Sam> +1

RESOLUTION: Incorporate Note 1, as above, provided the examples given do approximate the CSS pixel for the given platforms.

<maryjom> Note 2: A platform might define a density-independent pixel, yet not document it publicly. On a platform with both a web browser and non-web software, it is possible to obtain the density-independent pixel by observing a web page element whose size in CSS pixels is known.

maryjom: Onto note 2

mitch11: For brevity I think we can leave out

<bruce_bailey> i am also not a fan of note 2, +1 to sam earlier

<maryjom> Draft resolution: Do not include note 2.

<Sam> +1

<bruce_bailey> +1

<FernandaBonnin> +1

+1

<mitch11> +1

<maryjom> +1

<ShawnT> +1

RESOLUTION: Do not include note 2.

<maryjom> https://www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq2

maryjom: May not finish this today, another one where and amalgamation has been proposed.

maryjom: stong preference for P2, but there is a variation as well that people may like.

maryjom: Mitch came up with a proposal that combines and slight edits

mitch11: My proposal is half of P1 and half of P2

mitch11: All other proposals getting at using the calculation. We want to say use this calculation. Not clear which is the "do it" and which is the background explanation. All word-smithing.

maryjom: A little more time to see how Olivia's edits could work into Mitchell's

mitch11: The word "optimal" is not optimal. It implies too much and raises questions. Otherwise all a matter of whatever is clearest.

maryjom: We will do word-smithing offline.

<maryjom> Poll: Do you have an issue with Mitch's proposal?

No issues other that edits

<Zakim> bruce_bailey, you wanted to request surveys re-open and to

<Sam> is complicated. But if the group wants it in we need to make it as clear as possible

maryjom: Will make new survey to keep working these

maryjom: Two other surveys open, please take a look

Summary of resolutions

  1. Incorporate Note 1, as above, provided the examples given do approximate the CSS pixel for the given platforms.
  2. Do not include note 2.
Minutes manually created (not a transcript), formatted by scribe.perl version 210 (Wed Jan 11 19:21:32 2023 UTC).

Diagnostics

Succeeded: s/permalink: https://www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq1/permalink

Failed: s/permalink: https://www.w3.org/2002/09/wbs/55145/WCAG2ICT-CSS-pixels/results#xq1/ permalink

Succeeded: s/opps/

Maybe present: dmontalvo

All speakers: bruce_bailey, Chuck, dmontalvo, FernandaBonnin, maryjom, mitch11, Sam

Active on IRC: bruce_bailey, Chuck, Devanshu, dmontalvo, FernandaBonnin, maryjom, mitch11, olivia, Sam, shadi, ShawnT