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Re: [css3-text-layout] New editor's draft - margin-before/after/start/end etc.

From: MURATA Makoto (FAMILY Given) <eb2m-mrt@asahi-net.or.jp>
Date: Wed, 09 Jun 2010 13:15:02 +0900
To: www-style@w3.org
Message-Id: <20100609131501.9660.B794FC04@asahi-net.or.jp>
> Wow, that's funky.  Not only the scroll-wheel behavior but
> Page-down/Page-up/Home/End keys are also treated as logical commands,
> they map to Page-Left/Page-Right/Far Right/Far Left.

I have heard of this requirement when I was interviewing 
experts here in Japan.  I have assumed that such behaviours should 
be at the discretion of implementors and that they should 
not be standardzied in any spec. 

> Fully supporting vertical writing modes appears to affect a very wide
> portion of CSS. 

Not only CSS.  Today, somebody said to me that the principal 
text direction should be stored at the EPUB package layer rather 
than XHTML or CSS in the EPUB package. 

> I strongly suggest that rather than simply add features
> to CSS3 Text Layout we first consider the potential impact that vertical
> text modes will have on the whole of CSS.
 
Although your approach would provide a better balance and consistent 
design eventually, I am very worried about the wide scope of 
such an approach and very significant delays that might caused by it. 

"The Requirements for Japanese Text Layout" (W3C Note) was started 
as a reply to questions and requests similar to yours.  The project 
dates back to 2005.  Members of the project has spent enourmous 
amount of time.  More about this, see the CJK workshop presentation 
slide "Why JLTF?", which is available at http://www.asahi-net.or.jp/~eb2m-mrt/CJK/Seoul2010/ .

I agree that the current approach is ad-hoc.  Some features (probably 
from the W3C note) are strongly requested, while others are not mentioned.
But isn't it the best we can expect?  I certainly do not to want to spend 
five more years before even starting to introduce the writing-mode property.

Cheers,
Makoto
Received on Wednesday, 9 June 2010 04:15:37 GMT

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