W3C home > Mailing lists > Public > public-low-vision-a11y-tf@w3.org > November 2016

Re: Metadata On Hover SC Text

From: Alastair Campbell <acampbell@nomensa.com>
Date: Thu, 17 Nov 2016 22:57:48 +0000
To: Laura Carlson <laura.lee.carlson@gmail.com>
CC: public-low-vision-a11y-tf <public-low-vision-a11y-tf@w3.org>
Message-ID: <2C0D357F-FAE6-4757-BB64-D3E7540A7C1F@nomensa.com>
Hi Laura,

> The original issue the cursor overlapping the tooltip content making the tooltip text unreadable.

Ah, I thought we had established previously that is a user-agent issue? Apologies, looking back it was a common issue, just not universal.

So if we try to cover cursor overlapping, then logically if someone relies on tooltips then it will happen. There is no need to test, it will occur.

Therefore, tooltips should not be relied on. At all.

Also, the first part of the evidence included someone doing testing that showed the tooltip obscured an important link, and I think Wayne mentioned that as an issue as well?

It is an issue both ways – the tooltip being obscured, and the tooltip obscuring other content.

In which case we can simplify to:


Informational content which only appears on-hover must not be necessary for understanding and must not obscure other content.


I.e. it shouldn’t matter if it is visible, readable or not.

That seems to cover the evidence/benefits on the wiki, is it too harsh?

Received on Thursday, 17 November 2016 22:58:23 UTC

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