- From: Florian Rivoal via GitHub <sysbot+gh@w3.org>
- Date: Thu, 20 Oct 2016 04:23:16 +0000
- To: public-css-archive@w3.org
Right. Matching the size of a physical object seems valid in theory if there are relevant use cases, and correctly sizing touch targets seems like one. As such, a `tip` unit might be reasonable, especially if we let the UA define how big that should be. A stylus touch device could for instance have a smaller `tip` than a finger touch device. On the other hand, the difference between finger and stylus may be something we leave up to media queries (pointer:coarse vs pointer:fine), and for the rest maybe we can just deal with this with existing units: the distance range in which touch UIs can be used is necessarily limited by human anatomy, and something like `60px` = `0.625in` ≈ `1.6cm` seems to me like it would be appropriate for a finger touch target both on arm's length devices (touch-screen laptops), where it would have approximately that size in terms of physical measurements, as well as for folded-arm's length devices (phone/tablet), where it would be about half that in physical terms. And since arms length manipulation tend to be a little less precise (arm movement vs finger movement), the difference in scale might actually be a good thing. -- GitHub Notification of comment by frivoal Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/614#issuecomment-255005750 using your GitHub account
Received on Thursday, 20 October 2016 04:23:23 UTC