Bug 275621

Summary: Computed style in SVG should not be affected by CSS zoom
Product: WebKit Reporter: Philip Rogers <pdr>
Component: SVGAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: ahmad.saleem792, fujii.hironori, karlcow, ntim, sabouhallawa, simon.fraser, thorton, webkit-bug-importer, zimmermann
Priority: P2 Keywords: BrowserCompat, InRadar, WPTImpact
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=194903
Attachments:
Description Flags
Testcase showing computed style of zoomed values in html and svg none

Philip Rogers
Reported 2024-06-18 10:11:19 PDT
Created attachment 471700 [details] Testcase showing computed style of zoomed values in html and svg CSS zoom has recently been standardized (https://github.com/w3c/csswg-drafts/issues/5623) and Gecko has begun shipping this. A property of CSS zoom is that computed styles should not reflect the zoomed value. One reason for this is to support round-tripping. This is generally supported across Chromium, Gecko, and Webkit. In SVG though, Webkit incorrectly unzooms computed styles (see attached testcase). Expected (Chromium, Gecko): svg width computed style: 100px rect width computed style: 50px div width computed style: 100px Actual (Safari 17.4 WebKit 19619.1.16.3): svg width computed style: 100px rect width computed style: 25px div width computed style: 100px
Attachments
Testcase showing computed style of zoomed values in html and svg (625 bytes, text/html)
2024-06-18 10:11 PDT, Philip Rogers 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2024-06-25 10:12:13 PDT
<rdar://problem/130513052>
Ahmad Saleem
Comment 2 2025-11-26 00:32:10 PST
WebKit ToT (303562@main): svg width computed style: 100px rect width computed style: 50px div width computed style: 100px Safari Technology Preview 232: svg width computed style: 100px rect width computed style: 50px div width computed style: 100px
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