tree f9895d20b7c3ddc388bbad4ee63e68d8b9898686
parent d0c0fc8a22d7d5ffe36ceab456cc6222ce0c62ef
author antti@apple.com <antti@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1558109646 +0000
committer antti@apple.com <antti@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1558109646 +0000

[iOS] Respect scrolling="no" on composited frames
https://bugs.webkit.org/show_bug.cgi?id=197972
<rdar://problem/50252398>

Reviewed by Simon Fraser.

Source/WebKit:

* UIProcess/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.h:
* UIProcess/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.mm:
(WebKit::ScrollingTreeScrollingNodeDelegateIOS::commitStateAfterChildren):

Disallow scrolling based on canHaveScrollbars, similar to main frame.

(WebKit::ScrollingTreeScrollingNodeDelegateIOS::repositionScrollingLayers):
(WebKit::ScrollingTreeScrollingNodeDelegateIOS::scrollView const):

Factor into a function.

LayoutTests:

* fast/scrolling/ios/body-overflow-hidden-frame-expected.html:
* fast/scrolling/ios/body-overflow-hidden-frame.html:

Also fix overflow:hidden test so that the frame content forces composition.

* fast/scrolling/ios/frame-scrolling-no-expected.html: Added.
* fast/scrolling/ios/frame-scrolling-no.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@245465 268f45cc-cd09-0410-ab3c-d52691b4dbfc