[Webkit-unassigned] [Bug 110435] New: ScrollView should pass virtual viewport when calling scrollContentsFastPath and scrollContentsSlowPath.
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Feb 20 23:31:29 PST 2013
https://bugs.webkit.org/show_bug.cgi?id=110435
Summary: ScrollView should pass virtual viewport when calling
scrollContentsFastPath and scrollContentsSlowPath.
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
OS/Version: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Frames
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: luxtella at company100.net
Currently, ScrollView doesn't pass correct virtual viewport, so this patch fixes it.
In detail, ScrollView::scrollContents() uses ScrollView::rectToCopyOnScroll() to
get virtual viewport, but rectToCopyOnScroll() assumed the location of its own
virtual viewport is always (0, 0).
For your information, http://trac.webkit.org/wiki/ScalesAndZooms explains what
it virtual viewport.
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