- From: Wayne Dick <wayneedick@gmail.com>
- Date: Wed, 22 Nov 2017 07:03:38 -0800
- To: Alastair Campbell <acampbell@nomensa.com>
- Cc: "White, Jason J" <jjwhite@ets.org>, WCAG <w3c-wai-gl@w3.org>
- Message-ID: <CAJeQ8SDs4SOvJ29APitkWMtzR3BPHoddqY7X59qDytJrQHzXbg@mail.gmail.com>
I did think about this one a little when I did my operational analysis. Operational difficulty is equivalent in both orientations. The issue is screen orientation. Landscape orientation to shallow because the height of a landscape screen at 320px can be as small as 180px. That is an aspect ratio of 9/16. So can we fit enough vertical block characters in 180 pixels or must we reorient the screen. In either case I think the 320 line length suffices. Wayne On Wed, Nov 22, 2017 at 5:39 AM, Alastair Campbell <acampbell@nomensa.com> wrote: > Hi Jason, > > The current zoom SC in the draft does include the following note: > “320 CSS pixels is equivalent to a starting viewport width of 1280 CSS > pixels wide at 400% zoom. For web pages which are designed to scroll > horizontally, the 320px should be taken as the height rather than width.” > > Talking to Richard Ishida, vertical text is becoming better supported and > should become more common. > > However, as far as I can tell, horizontally scrolling pages (for vertical > text) are still very rare. I’ve found a demo which needed JavaScript to > achieve it properly, I don’t think regular browser support is there yet. > > Do you think it is worth complicating the SC text to account for > horizontally scrolling pages? > > Cheers, > > -Alastair > > Apologies for typos, sent from a mobile. > ------------------------------ > *From:* White, Jason J <jjwhite@ets.org> > *Sent:* Tuesday, November 21, 2017 8:35:53 PM > *To:* WCAG > *Subject:* Interaction of "zoom content" and vertical writing modes > > > The latest version of the “zoom content” proposal specifies that “content > can be presented at a width equivalent to 320 CSS pixels…”. In the case of > a vertical writing mode, however, it seems that the proposal would not > prevent a user with low vision who enlarges the text within appropriate > limits from having to engage in vertical scrolling to read the lines. > > I’m not familiar with the details of how vertical scripts are used, but if > the whole or a significant portion of a page is presented in such a writing > mode, then the current version of “zoom content” doesn’t appear to address > the needs of low vision users of such writing systems. > > If this issue doesn’t have a straightforward answer, I can open it > formally on GitHub. > > > > ------------------------------ > > This e-mail and any files transmitted with it may contain privileged or > confidential information. It is solely for use by the individual for whom > it is intended, even if addressed incorrectly. If you received this e-mail > in error, please notify the sender; do not disclose, copy, distribute, or > take any action in reliance on the contents of this information; and delete > it from your system. Any other use of this e-mail is prohibited. > > Thank you for your compliance. > ------------------------------ >
Received on Wednesday, 22 November 2017 15:04:54 UTC