[EFL][Qt] REGRESSION(r144787): A fixed element lags when scrolling and wheeling.
authorcommit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Fri, 8 Mar 2013 11:25:47 +0000 (11:25 +0000)
committercommit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Fri, 8 Mar 2013 11:25:47 +0000 (11:25 +0000)
commit1321c8de95aab60f9be9c185d6b76130ef5ca253
treea90ea3ba6ca9424b7472304d08cf2ae9a1610718
parent9a747e27d9a52e37878fe137627234ce17fc5787
[EFL][Qt] REGRESSION(r144787): A fixed element lags when scrolling and wheeling.
https://bugs.webkit.org/show_bug.cgi?id=111829

Patch by Huang Dongsung <luxtella@company100.net> on 2013-03-08
Reviewed by Noam Rosenthal.

Currently, flagsChanged deals with all boolean flags. It introduces this bug
because when another flag (i.e. preserves3D) is changed, fixedToViewport is set
to false. So this patch updates all flags when at least one flag is changed.

In addition, this patch amends isScrollable code to match other flags.

This patch can only be tested manually since there is no automated
testing facilities for in-motion touch.
Test: ManualTests/fixed-position.html
      ManualTests/nested-fixed-position.html

* platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:
(WebCore::CoordinatedGraphicsLayer::setScrollableArea):
(WebCore::CoordinatedGraphicsLayer::syncLayerState):
* platform/graphics/texmap/coordinated/CoordinatedGraphicsScene.cpp:
(WebCore::CoordinatedGraphicsScene::setLayerState):
* platform/graphics/texmap/coordinated/CoordinatedGraphicsState.h:
(WebCore::CoordinatedGraphicsLayerState::CoordinatedGraphicsLayerState):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@145207 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Source/WebCore/ChangeLog
Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp
Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsScene.cpp
Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsState.h