201770 2019-09-13 13:49:34 -0700 PointerEvent.buttons incorrect on touch move 2019-09-17 07:01:37 -0700 1 1 1 Unclassified WebKit UI Events Safari Technology Preview iPhone / iPad Other RESOLVED DUPLICATE 199910 InRadar P2 Normal --- 1 ian webkit-unassigned graouts simon.fraser webkit-bug-importer oldest_to_newest 1570694 0 378752 ian 2019-09-13 13:49:34 -0700 Created attachment 378752 Small example reproducing the issue In the iOS13 iPhone simulator at least, the value of the 'buttons' property of a pointermove event generated by a moving touch is 0, but according to the W3C spec it should be 1. It appears to be 1 in Chrome (android simulator and on desktop in touch simulation mode). Example attached. This discrepancy leads to a project bug in the simulator that matches a bug on an iPad running 13.1. (I'll confirm its the same issue once I get a chance to plug the device in.) 1570713 1 ian 2019-09-13 14:37:17 -0700 In iPad OS 13.1 on a 2018 iPad pointermove.buttons also reads as 0 when caused by a touch. Also in the iOS13 iPhone simulator, pointermove events are dispatched continuously even if the mouse isn't moving. This is not the case in 13.1 on the iPad. 1571062 2 webkit-bug-importer 2019-09-16 03:49:59 -0700 <rdar://problem/55394548> 1571079 3 graouts 2019-09-16 06:40:55 -0700 This *should* work but clearly doesn't. static unsigned short buttonsForType(const AtomString& type) { // We have contact with the touch surface for most events except when we've released the touch or canceled it. return (type == eventNames().pointerupEvent || type == eventNames().pointeroutEvent || type == eventNames().pointerleaveEvent || type == eventNames().pointercancelEvent) ? 0 : 1; } This should return 1 for pointermove. 1571518 4 graouts 2019-09-17 07:01:37 -0700 This actually works on ToT, this is a dupe of https://bugs.webkit.org/show_bug.cgi?id=199910. However, this landed too late to make it into iOS 13. It will be picked up for an upcoming software update, but I can't comment as to when. *** This bug has been marked as a duplicate of bug 199910 *** 378752 2019-09-13 13:49:34 -0700 2019-09-13 13:49:34 -0700 Small example reproducing the issue pointer-move-buttons.html text/html 498 ian PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KCTx0aXRsZT48L3RpdGxlPgoJPHN0eWxlIHR5 cGU9InRleHQvY3NzIj4KCQlkaXZ7CgkJCXdpZHRoOjEwMHB4OwoJCQloZWlnaHQ6MTAwcHg7CgkJ CWJhY2tncm91bmQtY29sb3I6IGJsYWNrOwkJCQoJCX0KCQkqeyB0b3VjaC1hY3Rpb246IG5vbmU7 IH0KCTwvc3R5bGU+CjwvaGVhZD4KPGJvZHk+Cgk8ZGl2PjwvZGl2PgkKPC9ib2R5Pgo8c2NyaXB0 IHR5cGU9InRleHQvamF2YXNjcmlwdCI+CgkJCQkKCQl2YXIgY2FwdHVyZUlEID0gbnVsbDsKCQls ZXQgZGl2ID0gZG9jdW1lbnQucXVlcnlTZWxlY3RvcigiZGl2IikJCgkJZGl2LmFkZEV2ZW50TGlz dGVuZXIoInBvaW50ZXJtb3ZlIiwoZSk9PnsJCQkKCQkJY29uc29sZS5sb2coImV2ZW50LmJ1dHRv bnMgc2hvdWxkIGJlIDEgZm9yIGEgdG91Y2guIGFjdHVhbCBldmVudC5idXR0b25zIHZhbHVlIGlz ICIgKyBlLmJ1dHRvbnMpCQkJCgkJfSkKCTwvc2NyaXB0Pgo8L2h0bWw+