Re: [csswg-drafts] [css-overflow][css-transforms] Define how perspective transform interacts with scrollable overflow area (#8193)

> I'm not entirely sure what you're referring to as "projection transform" -- whether you're talking about the `perspective` property or values (like the `perspective()` function) of the `transform` property.

That was a typo 😅. 
I was talking about the perspective transform applied due to setting the `perspective` property. 

> In hindsight, https://crbug.com/1264086 should probably have had a corresponding csswg-drafts issue a long time ago (but I don't think it does), but I suspect this issue is perhaps somewhat different.

I think this is related. The overflow module should describe how the UA should extend the scrollable overflow area, taking the projection and possible scroll offsets into account. 

After fixing [my test](https://codepen.io/johannesodland/pen/GRGzjPO), I realise that Chrome behaves different from Firefox.  It seems like Chrome calculates the scrollable overflow area without taking the scroll offset into account (as if the scroll offset is 0,0. I'll edit the text to reflect that.

I think Firefox behaviour here is correct.



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Received on Wednesday, 7 December 2022 06:54:07 UTC