[webkit-changes] [WebKit/WebKit] 20e46b: [Site Isolation] Fix mouse event coordinates with ...

[Charlie Wolfe]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 20e46bea66daf37a1032bb1aa02dca3fdc656c84
      https://github.com/WebKit/WebKit/commit/20e46bea66daf37a1032bb1aa02dca3fdc656c84
  Author: Charlie Wolfe <charliew at apple.com>
  Date:   2023-10-10 (Tue, 10 Oct 2023)

  Changed paths:
    A LayoutTests/http/tests/site-isolation/mouse-events/resources/message-mouse-down-coordinates.html
    A LayoutTests/http/tests/site-isolation/mouse-events/resources/scroll-and-message-mouse-down-coordinates.html
    A LayoutTests/http/tests/site-isolation/mouse-events/scrolled-iframe-expected.txt
    A LayoutTests/http/tests/site-isolation/mouse-events/scrolled-iframe.html
    A LayoutTests/http/tests/site-isolation/mouse-events/scrolled-mainframe-expected.txt
    A LayoutTests/http/tests/site-isolation/mouse-events/scrolled-mainframe.html
    M LayoutTests/platform/ios/TestExpectations
    M Source/WebCore/page/EventHandler.cpp
    M Source/WebCore/page/EventHandler.h

  Log Message:
  -----------
  [Site Isolation] Fix mouse event coordinates with scrolled frames
https://bugs.webkit.org/show_bug.cgi?id=262905
rdar://116690742

Reviewed by Alex Christensen.

Currently, mouse events passed to site-isolated frames will be offset if the target frame or target
frame’s ancestors are scrolled. We should convert to/from root view coordinates so that the scroll
position for each frame is considered.

Also change the parameter back on `documentPointForWindowPoint()` since that function should only be
used for local frames.

* LayoutTests/http/tests/site-isolation/mouse-events/resources/message-mouse-down-coordinates.html: Added.
* LayoutTests/http/tests/site-isolation/mouse-events/resources/scroll-and-message-mouse-down-coordinates.html: Added.
* LayoutTests/http/tests/site-isolation/mouse-events/scrolled-iframe-expected.txt: Added.
* LayoutTests/http/tests/site-isolation/mouse-events/scrolled-iframe.html: Added.
* LayoutTests/http/tests/site-isolation/mouse-events/scrolled-mainframe-expected.txt: Added.
* LayoutTests/http/tests/site-isolation/mouse-events/scrolled-mainframe.html: Added.
* LayoutTests/platform/ios/TestExpectations:
* Source/WebCore/page/EventHandler.cpp:
(WebCore::documentPointForWindowPoint):
(WebCore::EventHandler::mouseEventDataForRemoteFrame):
(WebCore::EventHandler::handleMousePressEvent):
(WebCore::EventHandler::handleMouseMoveEvent):
(WebCore::EventHandler::handleMouseReleaseEvent):
* Source/WebCore/page/EventHandler.h:

Canonical link: https://commits.webkit.org/269143@main