[webkit-changes] [WebKit/WebKit] 066e5b: [UI-side compositing] Ensure that wheel events got...

[Simon Fraser]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 066e5bd1d32e27a05ef0df5f5554b5aa8d76f553
      https://github.com/WebKit/WebKit/commit/066e5bd1d32e27a05ef0df5f5554b5aa8d76f553
  Author: Simon Fraser <simon.fraser at apple.com>
  Date:   2022-12-07 (Wed, 07 Dec 2022)

  Changed paths:
    M Source/WebKit/UIProcess/RemoteLayerTree/mac/RemoteScrollingTreeMac.h
    M Source/WebKit/UIProcess/RemoteLayerTree/mac/RemoteScrollingTreeMac.mm

  Log Message:
  -----------
  [UI-side compositing] Ensure that wheel events got to the web process for JS event handlers
https://bugs.webkit.org/show_bug.cgi?id=248846

Reviewed by Tim Horton.

Override `eventListenerRegionTypesForPoint()` in RemoteScrollingTreeMac just as we do in ScrollingTreeMac
to get the event handler details for a given point. We use this to know if we have to continue with the
web process/main thread event handling path.

* Source/WebKit/UIProcess/RemoteLayerTree/mac/RemoteScrollingTreeMac.h:
* Source/WebKit/UIProcess/RemoteLayerTree/mac/RemoteScrollingTreeMac.mm:
(WebKit::eventRegionForLayer):
(WebKit::layerEventRegionContainsPoint):
(WebKit::RemoteScrollingTreeMac::eventListenerRegionTypesForPoint const):

Canonical link: https://commits.webkit.org/257531@main