W3C home > Mailing lists > Public > public-css-archive@w3.org > July 2020

Re: [csswg-drafts] [css-inline-3] Define em-top and em-bottom baselines (#5312)

From: fantasai via GitHub <sysbot+gh@w3.org>
Date: Fri, 31 Jul 2020 14:42:51 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-667155712-1596206570-sysbot+gh@w3.org>
> central is defined as "halfway between the ideographic-under and ideographic-over baselines", so it will never be defined without iTop and iBottom, correct?

Depends on the font format, some formats have an explicit ideographic-central baseline.

> emHeightAscent and emHeightDescent, not fontBoundingBoxAscent and fontBoundingBoxDescent, correct?

Yes.

> Maybe we suggest HTML Canvas to add horizontal and vertical metrics?

I guess that's an issue for Canvas API :) In CSS we would use the correct set depending on writing-mode...

-- 
GitHub Notification of comment by fantasai
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/5312#issuecomment-667155712 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Friday, 31 July 2020 14:42:53 UTC

This archive was generated by hypermail 2.4.0 : Tuesday, 5 July 2022 06:42:12 UTC