Re: Target Size SC

On 22/11/2017 17:42, Michael Gower wrote:
[...]
>   * User Agent Control - The appearance of the target is determined by
>     the user agent and is not modified by the author.
> 
> 
> We add in wording to the Understanding document that makes it clear that 
> any alteration of user interface controls through suppression of 
> appearance, such as removal of underlining from links, or styling user 
> agent controls with CSS immediately makes the SC applicable. We may need 
> some language on links saying that changing /only /link text color for 
> visited and unvisited links is an exception. That addresses the block of 
> text situation, in the case where link color is modified but nothing else.
> 
> This is much the same tactic we took for User Interface Component 
> Contrast (and which was revised into Graphics Contrast:
> The visual presentation of the following have a contrast ratio of at 
> least 3:1 against adjacent color(s): (Level AA)
> 
> User Interface Components
> Visual information used to indicate states and boundaries of active user 
> interface components, except where the appearance of the component is 
> determined by the user agent and not modified by the author.
> 
> Thoughts?

Just leaving the "what we mean by 'appearance', and which CSS is still 
ok" part in the informative understanding rather than the normative SC 
text will open this up to interpretation a bit too much for my liking.

What if authors add an icon via CSS (e.g. as a background, or using 
:before / :after) to a link? Does that immediately make the SC apply 
too? It seems yet again quite arbitrary.

I for one would still favor dropping this SC altogether and leaving it 
as a best practice/usability one for future that is less cut and dry on 
pass/fail criteria and allows terminology such as "the primary / most 
important controls" (to hone in on what the minimum target size should 
apply) and mitigating language like "unless not possible" to cover 
scenarios like links in blocks of text potentially vertically overlapping.

P
-- 
Patrick H. Lauke

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Received on Wednesday, 22 November 2017 18:51:59 UTC