Re: [csswg-drafts] [css-inline-3] About the central baseline (#5177)

@litherum Wrt compat, my understanding is that CJK fonts generally have their ascent/descent matching the ideographic top/bottom lines, so this would not result in a noticeable change for most of those cases. And definitely it's the correct behavior for vertical CJK, which I imagine constitutes most of your vertical content.

Wrt CoreText capabilities, I'm not seeing any API to get information about any baselines there, nevermind this one specifically. I think it's reasonable to ask Apple to extend CoreText to return baseline metrics? (Also seems a bit weird for Apple to go through the trouble of [defining baseline metrics in AAT](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bsln.html) but not make them accessible through CoreText.)

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Received on Saturday, 29 August 2020 05:04:03 UTC