294570 2025-06-16 11:15:54 -0700 Hit-testing should use a device-pixel size bounding box 2025-06-23 11:16:17 -0700 1 1 1 Unclassified WebKit UI Events WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=294571 InRadar P2 Normal --- 1 simon.fraser a_protyasha ahmad.saleem792 simon.fraser webkit-bug-importer oldest_to_newest 2124018 0 simon.fraser 2025-06-16 11:15:54 -0700 HitTestLocation currently makes a 1px box with the location at its top-left for hit-testing. That results in coarser hit-test that necessary. I think we should use a device-pixel sized box. This becomes more relevant when we allow device-pixel accuracy for pointer events. 2124022 1 simon.fraser 2025-06-16 11:19:22 -0700 This affects fast/frames/iframe-subpixel-hit-test.html which I am adding for bug 294571. 2124064 2 simon.fraser 2025-06-16 14:37:15 -0700 We should also make imported/w3c/web-platform-tests/css/css-transforms/transform-scale-hittest.html pass. 2124067 3 simon.fraser 2025-06-16 14:42:23 -0700 We probably need something like https://chromium.googlesource.com/chromium/src.git/+/c47a6f0b4a592c2383fb553b6169f89ab01d851d 2124115 4 ahmad.saleem792 2025-06-16 20:23:20 -0700 Simon - I tried it here - https://github.com/WebKit/WebKit/pull/37975/files 2125287 5 webkit-bug-importer 2025-06-23 11:16:17 -0700 <rdar://problem/154111494>