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[csswg-drafts] [css-text] Default color of text-shadow

From: jfkthame via GitHub <sysbot+gh@w3.org>
Date: Mon, 16 Jan 2017 13:55:33 +0000
To: public-css-archive@w3.org
Message-ID: <issues.opened-201025153-1484574932-sysbot+gh@w3.org>
jfkthame has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== [css-text] Default color of text-shadow ==
[https://drafts.csswg.org/css-text-decor-3/#text-shadow-property](https://drafts.csswg.org/css-text-decor-3/#text-shadow-property)
 says that:

> If the color of the shadow is not specified, the shadow has the 
resulting color of the ink that it shadows.

This seems to imply, for instance, that a colored emoji glyph would by
 default (i.e. no explicit shadow color is specified) cast a 
multi-colored shadow, as its ink is multi-colored. But ISTM that a 
"shadow" is inherently monochrome, regardless of the color(s) of the 
thing being shadowed.

Perhaps this text was written with text decorations in mind, given 
that `text-decoration-color` can give different colors to underline, 
overline, etc.; so the "ink" of a decoration may have a different 
color than the "ink" of the associated text, and the intent may have 
been to allow different-colored decorations to cast corresponding 
different-colored shadows.

But this still seems wrong to me. In the case of text with a colored 
underline (perhaps even multiple, differently-colored decoration 
lines), I think the natural interpretation of text-shadow is that it 
causes the complete (decorated) text rendering to cast a single, 
monochromatic shadow, and not that it causes the (bare) text to cast a
 shadow that then has various-colored decorations applied to it.

Also, compare 
[`box-shadow`](https://drafts.csswg.org/css-backgrounds-3/#the-box-shadow),
 which says:

> If the color is absent, the used color is taken from the ‘color’ 
property.

So a multi-colored `<img>`, for example, does not magically cast a 
multi-colored shadow. Neither should multi-colored decorated text, 
IMO, cast a multi-colored shadow.

Therefore, I suggest the `text-shadow` spec should be changed to be 
like `box-shadow` in this respect.

Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/942 using your GitHub 
account
Received on Monday, 16 January 2017 13:55:39 UTC

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