Re: EPUB Accessibility: Discovery of the Writing Direction (DRAFT 1.0)

The subject of this e-mail, and the attached doc, is about discovering the
writing-mode of a document.

The discussion, if I understand correctly, is about changing the
writing-mode of a document.

Which topic are we discussing?

2020年11月29日(日) 23:49 MURATA <eb2mmrt@gmail.com>:

> Ten days ago Kouyama-sensei (a dyslexic person)
> gave a talk at an accessibility event (障害者研修会)
> of Google and requested the support of the switching
> of horizontal and vertical writing.  The Japanese DAISY
> consortium firmly believes that such switching is very
> important for learning disabilities, autism, and optic
> stenosis.  Existing DAISY readers support this feature.
>
> Regards,
> Makoto
>
> 2020年11月29日(日) 23:06 Koji Ishii <kojiishi@gmail.com>:
>
>
> >
> > This proposal is only about discovering the primary writing-mode,
> correct? Assuming my understanding is correct, the 3 proposals (this
> proposal, alternate style tags, and MQ) are for different use cases. The
> alternate style tags spec was for single content to support both
> writing-modes. We added it because we saw some early digital book readers
> implemented the feature, but most major epub readers did not implement the
> feature. MQ was once discussed for the same use case, but it was not
> pursued much because 1) the use case itself was in question, 2) MQ should
> not use style as input (creates a loop), and 3) it does not provide a
> mechanism to switch writing-mode. Neither the alternate style tags nor MQ
> can discover the primary writing-mode of a content.
> >
> > I think the question is more about whether this is necessary to
> standardize or not. Are there more than one reader vendors and more than
> one content vendors willing to support?
> >
> > 2020年11月29日(日) 22:12 MURATA <eb2mmrt@gmail.com>:
> >>
> >> Ivan,
> >>
> >> Fantasai suggested that option but she was not sure if
> >> browser vendors like it.  We might want to try it after
> >> we can demonstrate that a lot of users really care.
> >>
> >> Regards,
> >> Makoto
> >>
> >> 2020年11月29日(日) 21:25 Ivan Herman <ivan@w3.org>:
> >> >
> >> > (cc Koji Ishii, Richard Ishida, and Florian Rivoal, they know way
> more than I do about this.)
> >> >
> >> > Thanks Makoto,
> >> >
> >> > just thinking out loud for the future… wouldn't it be a better
> approach to have a media query dimension in CSS media queries on the
> writing direction? CSS has this notion of (Block flow direction) in[1] but
> I am not sure it can bound to media queries[2,3]. This would make the IDPF
> specific classes obsolete...
> >> >
> >> > I realize that is a longer term solution that should be raised by the
> CSS WG. Just asking at this point...
> >> >
> >> > Cheers
> >> >
> >> > Ivan
> >> >
> >> >
> >> > [1] https://www.w3.org/TR/css-writing-modes-4/#block-flow
> >> > [2] https://drafts.csswg.org/mediaqueries-4/
> >> > [3] https://drafts.csswg.org/mediaqueries-5
> >> >
> >> >
> >> >
> >> >
> >> > On 29 Nov 2020, at 07:10, MURATA <eb2mmrt@gmail.com> wrote:
> >> >
> >> > Dear colleagues,
> >> >
> >> > Here is another document from the Japanese
> >> > DAISY consortium.
> >> >
> >> > https://1drv.ms/w/s!An5Z79wj5AZBgtUx_1os2PNRrYkDjA?e=v9qSpH
> >> >
> >> > It summarizes discovery requirements for
> >> > accessible EPUB publications according
> >> > to user preferences on the writing direction
> >> > (horizontal or vertical).
> >> >
> >> > I hope to register Schema.org metadata
> >> > and ONIX metadata based on this
> >> > document.  (BTW, Keio University is
> >> > already a member of EDItEUR for this
> >> > registration.)
> >> >
> >> > Regards,
> >> > MURATA Makoto, Keio University
> >> >
> >> >
> >> >
> >> > ----
> >> > Ivan Herman, W3C
> >> > Home: http://www.w3.org/People/Ivan/
> >> > mobile: +33 6 52 46 00 43
> >> > ORCID ID: https://orcid.org/0000-0003-0782-2704
> >> >
> >>
> >>
> >> --
> >>  --
> >> 内閣官房IT総合推進室政府CIO補佐官
> >> 慶應義塾大学政策・メディア研究科特任教授
> >> 日本デイジーコンソーシアム技術委員会委員長
> >> 村田 真
>
>
>
> --
>  --
> 内閣官房IT総合推進室政府CIO補佐官
> 慶應義塾大学政策・メディア研究科特任教授
> 日本デイジーコンソーシアム技術委員会委員長
> 村田 真
>