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[csswg-drafts] [css-writing-modes] baseline tables figures are confusing, do not correspond to OTF BASE table (#3439)

From: Nat McCully via GitHub <sysbot+gh@w3.org>
Date: Wed, 12 Dec 2018 23:30:45 +0000
To: public-css-archive@w3.org
Message-ID: <issues.opened-390453812-1544657442-sysbot+gh@w3.org>
macnmm has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-writing-modes] baseline tables figures are confusing, do not correspond to OTF BASE table ==
https://www.w3.org/TR/css-writing-modes-3/images/script-preferred-baselines.gif

https://www.w3.org/TR/css-writing-modes-3/images/baselines.gif

Both of these images do not convey a usable embox top or bottom baseline that is the normal line top and bottom for CJK text. The embox top and bottom can be obtained from the 'ideo' baseline and the point size of OpenType fonts' BASE table. These are the preferred measuring points for typographic line top and bottom, and leading measurements for CJK text. They are also the alignment points to be used with text grids and in mixed sized text.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/3439 using your GitHub account
Received on Wednesday, 12 December 2018 23:30:46 UTC

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