Bug 321939 – [EvaluationTimeZoom] px values in calc() expressions that survive through computed style are being serialized incorrectly

• Status: RESOLVED
• Resolution: FIXED
• Component: CSS

[Sam Weinig]

Created attachment 481080 [details]
Test case

px values in calc() expressions that survive through computed style are being unzoomed incorrectly. This used to be necessary, when computed values were zoomed, but with evaluation time zoom this is incorrect.

For example, given

```
  <div id=foo style="zoom: 2; text-indent: calc(10% + 10px);"></div>
```

the following script:

```
window.getComputedStyle(document.getElementById("foo")).textIndent;
```

should print `calc(10% + 10px)` but instead prints `calc(10% + 5px)` (the px term is being incorrectly unscaled by the zoom).

[Sam Weinig]

Pull request: https://github.com/WebKit/WebKit/pull/71779

[EWS]

Committed 319320@main (17e6d00a1924): <https://commits.webkit.org/319320@main>

Reviewed commits have been landed. Closing PR #71779 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/185156231>