Bug 54532

Summary: On platforms without platformWidgets, going Back to a scrolled page draws at the top-left before drawing at the restored scroll position
Product: WebKit Reporter: John Sullivan <sullivan>
Component: Layout and RenderingAssignee: John Sullivan <sullivan>
Status: RESOLVED FIXED    
Severity: Normal CC: koivisto, mitz
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: All   
OS: OS X 10.6   
Attachments:
Description Flags
Patch to not send didFirstLayout for a nested layout. koivisto: review+

Description John Sullivan 2011-02-15 22:53:42 PST 
To reproduce (on Windows or using WebKit2 on Mac, e.g.):

1. Visit http://www.apple.com in a window that’s narrow enough that a horizontal scroller is needed.
2. Scroll to the right side of the page.
3. Click one of the links at the top (e.g. “iPad”).
4. Click Back button

http://www.apple.com draws at the top-left, then redraws with the correct scroll position.

This does not happen in shipping Safari on Mac (due to the use of platformWidgets for the scrollers, as it turns out).
Comment 1 John Sullivan 2011-02-15 23:02:15 PST 
Created attachment 82594 [details]
Patch to not send didFirstLayout for a nested layout.
Comment 2 mitz 2011-02-15 23:04:19 PST 
<rdar://problem/8998838>
Comment 3 Antti Koivisto 2011-02-15 23:24:34 PST 
Comment on attachment 82594 [details]
Patch to not send didFirstLayout for a nested layout.

r=me
Comment 4 Mark Rowe (bdash) 2011-02-15 23:40:32 PST 
Committed r78687.
http://trac.webkit.org/changeset/78687