Re: [csswg-drafts] Browser zoom unit for accessibility [css-values-and-units] (#6869)

> As @litherum pointed out, "zoom" means different things to different people. I recall there are at least 4 or 5 types of "zoom." So would you expect this to work for pinch-to-zoom, double-tap-to-zoom, native zoom or screen magnification, and the built-in font size increase forms of "zoom" too? Or is this limited to the cmd+/cmd- form of zoom?

I would expect this to work only for `cmd+`/`cmd-` page magnification only as opposed to font size scaling or pinch to zoom. These accessibility issues are only present with `cmd+`/`cmd-` desktop page magnification.

> Thanks. How would you compute the numeric value of the zoom keyword? Is it a unit, too? Is zoom proposed to be the current scale factor where 1.0 represents the default unzoomed web engine view, and 1.2 would be a 20% zoom?

I was thinking of `zoom` as a keyword similar to `currentColor` where it would represent a value of `1.0` at a normal zoom of 100% and when `cmd+`/`cmd-` is pressed, 120% zoom would result in a value of `1.2`, and 80% zoom would result in a value of `0.8`.

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Received on Wednesday, 12 January 2022 21:29:27 UTC