Bug 242189

Summary: Support subpixel precision in pageX, pageY and scrollTop
Product: WebKit Reporter: Oleguer Llopart <oleguer.llopart.mora>
Component: UI EventsAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: a_protyasha, dino, graouts, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: Safari 15   
Hardware: iPhone / iPad   
OS: iOS 15   
URL: https://ollm.dev/pagex/pagex.html
See Also: https://bugs.webkit.org/show_bug.cgi?id=234360
Attachments:
Description Flags
Subpixels in Chrome Android none

Oleguer Llopart
Reported 2022-06-30 07:12:20 PDT
Created attachment 460580 [details] Subpixels in Chrome Android Example URL: https://ollm.dev/pagex/pagex.html Safari currently returns integer values in pageX, pageY, scrollTop, clientX, etc in safari for iOS (I haven't tested it in safari for macOS), this causes transitions that depend on these properties to look rough, especially the more DPI the device has. Currently chrome for Android already supports subpixiles for pageX, pageY, scrollTop, etc. Example video in Safari iOS: https://drive.google.com/file/d/1snoRR0diab9nZ_jU2a6i-bBUcSvMGo-e/view?usp=sharing Example video in Chrome Android: https://drive.google.com/file/d/1RBj6Ae1A-xNeKwPVQnDZzbcLn3-y2EtQ/view?usp=sharing
Attachments
Subpixels in Chrome Android (2.26 MB, video/mp4)
2022-06-30 07:12 PDT, Oleguer Llopart 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2022-07-07 07:13:13 PDT
<rdar://problem/96595261>
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