Fixed position objects are clipped in iOS WK2
https://bugs.webkit.org/show_bug.cgi?id=127974
Reviewed by Darin Adler.
We clip compositing layers for fixed position objects to the viewport
to avoid huge layers. However, because iOS changes the fixed position
rect when zooming, we need a different rect for iOS.
In WK1 (when we have a platformWidget), we can use
visibleContentRect(ScrollableArea::LegacyIOSDocumentVisibleRect)
which is effectively the whole document. However in WK2 this is
the real visibleContentRect(), so there we use unscaledDocumentRect().
* page/FrameView.cpp:
(WebCore::FrameView::viewportConstrainedExtentRect):
* page/FrameView.h:
* rendering/RenderLayerBacking.cpp:
(WebCore::RenderLayerBacking::updateCompositedBounds):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@163146 268f45cc-cd09-0410-ab3c-d52691b4dbfc
4 files changed
