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Re: [csswg-drafts] [css-overflow] [css-transform] Should transformation affect the scroll direction via touchpads/touchscreens? (#5733)

From: CSS Meeting Bot via GitHub <sysbot+gh@w3.org>
Date: Tue, 27 Jul 2021 16:11:19 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-887644071-1627402278-sysbot+gh@w3.org>
The CSS Working Group just discussed `Should transform affect scroll-direction of touchpads?`, and agreed to the following:

* `RESOLVED: Adding a note describing the behavior to the css-overflow spec`

<details><summary>The full IRC log of that discussion</summary>
&lt;emilio> topic: Should transform affect scroll-direction of touchpads?<br>
&lt;emilio> github: https://github.com/w3c/csswg-drafts/issues/5733<br>
&lt;emilio> fantasai: the question is what happens to various ways of scrolling when you have a transform<br>
&lt;emilio> ... on firefox the wheel follows logical directions<br>
&lt;emilio> ... while touchpad uses physical directions<br>
&lt;Rossen_> q?<br>
&lt;emilio> ... other UAs do different stuff<br>
&lt;TabAtkins> q+<br>
&lt;emilio> ... this is not defined, do we want to specify this?<br>
&lt;Rossen_> ack TabAtkins<br>
&lt;smfr> q+<br>
&lt;emilio> TabAtkins: Given the complexity of what transforms can do to an element I doubt that we can provide strict rules<br>
&lt;emilio> ... but guidance sounds good<br>
&lt;florian> q+<br>
&lt;fantasai> +1<br>
&lt;Rossen_> ack smfr<br>
&lt;emilio> ... flipping an element and scrolling with the trackpad should probably scroll visually<br>
&lt;Rossen_> ack florian<br>
&lt;emilio> smfr: I'd prefer not defining this strictly, we rely on UIKit and doing something different is probably very hard<br>
&lt;emilio> florian: If you manipulate a touchscreen there's a clear expectation, but mousewheel is different. Should guidance for direct manipulation sounds worth it but trackpads are harder<br>
&lt;Rossen_> q?<br>
&lt;chris> yeah users have two, conflicting, ways that touchpads and mice should work and each user hates one of them<br>
&lt;emilio> Rossen_: seems there's agreement to add guidance, would this go to overflow?<br>
&lt;emilio> florian: yeah, we talking about a note?<br>
&lt;emilio> Rossen_: yeah<br>
&lt;emilio> florian: fine by me<br>
&lt;emilio> RESOLVED: Adding a note describing the behavior to the css-overflow spec<br>

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