Bug 185515

Summary: REGRESSION(r230323): UIProcess needs to notify WebContent process of Accessibility setting changes
Product: WebKit Reporter: Brent Fulgham <bfulgham>
Component: WebKit Misc.Assignee: Brent Fulgham <bfulgham>
Status: RESOLVED FIXED    
Severity: Normal CC: achristensen, bfulgham, cdumez, cfleizach, commit-queue, jcraig, youennf
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 184337    
Bug Blocks:    
Attachments:
Description Flags
Patch
none
Patch for landing none

Description Brent Fulgham 2018-05-10 10:09:10 PDT 
In Bug 184337 I started caching the state of CGDisplayUsesInvertedPolarity (and other accessibility settings) so that we could message them from the UIProcess, and avoid interacting with the Window Server in the WebContent process.

Unfortunately, this caused certain accessibility features (such as inverted colors) to only be read when the UIProcess launched, because WebKit was not registered to be notified when screen-affecting accessibility changes were made.

Instead, WebKit needs to register to be notified if accessibility preferences change so that it can notify the related WebContent processes that their screen characteristics may have changed.
Comment 1 Brent Fulgham 2018-05-10 10:09:49 PDT 
<rdar://problem/39627764>
Comment 2 Brent Fulgham 2018-05-10 10:24:19 PDT 
Created attachment 340099 [details]
Patch
Comment 3 Brent Fulgham 2018-05-10 10:54:27 PDT 
Created attachment 340104 [details]
Patch for landing
Comment 4 WebKit Commit Bot 2018-05-10 11:32:05 PDT 
Comment on attachment 340104 [details]
Patch for landing

Clearing flags on attachment: 340104

Committed r231648: <https://trac.webkit.org/changeset/231648>
Comment 5 WebKit Commit Bot 2018-05-10 11:32:06 PDT 
All reviewed patches have been landed.  Closing bug.