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Re: [css3-writing-modes][cssom-view] scrollIntoView in vertical flow

From: François REMY <fremycompany_pub@yahoo.fr>
Date: Mon, 2 Jan 2012 16:29:06 +0100
Message-ID: <47F4125D1A6A4AC792ACC3C4712A9B28@FREMY2>
To: "Koji Ishii" <kojiishi@gluesoft.co.jp>, <www-style@w3.org>
I think they are sometimes used as "physical" for drag/drop. We now have 
"element(s)FromPoint" but it doesn't always have been the case.

-----Message d'origine----- 
From: Koji Ishii
Sent: Monday, January 02, 2012 4:11 PM
To: www-style@w3.org
Subject: [css3-writing-modes][cssom-view] scrollIntoView in vertical flow

A friend of mine found that scrollIntoView[1] doesn't work when principal 
writing mode is vertical, because the spec assumes text flows top to bottom, 
which is not true for vertical flow. He was developing a JavaScript to 
highlight text being read by SMIL[2].

I think we need to apply dimensional mapping[3] to CSSOM View. "Scroll an 
element into view"[4] must be logicalized. Whether to logicalize properties 
such as clientTop might need discussions. I think practical answer is to 
logicalize them as well because physical means many scripts must be 
re-written to run well in vertical flow, and I can't imagine good use of 
these properties as physical.


[1] http://www.w3.org/TR/cssom-view/#dom-element-scrollintoview
[2] http://www.epubcafe.jp/egls/epubcon01a/0101
[3] http://dev.w3.org/csswg/css3-writing-modes/#dimension-mapping
[4] http://www.w3.org/TR/cssom-view/#scroll-an-element-into-view

Received on Monday, 2 January 2012 15:29:33 UTC

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