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<title>[180447] trunk/Source/WebCore</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/180447">180447</a></dd>
<dt>Author</dt> <dd>bfulgham@apple.com</dd>
<dt>Date</dt> <dd>2015-02-20 12:50:48 -0800 (Fri, 20 Feb 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Rename ScrollElasticityController to ScrollController
https://bugs.webkit.org/show_bug.cgi?id=141842
Reviewed by Simon Fraser.
No change in functionality.
* PlatformMac.cmake:
* WebCore.order:
* WebCore.xcodeproj/project.pbxproj:
* page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h:
* page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm:
(WebCore::ScrollingTreeFrameScrollingNodeMac::ScrollingTreeFrameScrollingNodeMac):
(WebCore::ScrollingTreeFrameScrollingNodeMac::handleWheelEvent):
(WebCore::ScrollingTreeFrameScrollingNodeMac::startSnapRubberbandTimer):
* platform/mac/ScrollAnimatorMac.h:
* platform/mac/ScrollAnimatorMac.mm:
(WebCore::ScrollAnimatorMac::ScrollAnimatorMac):
(WebCore::ScrollAnimatorMac::isRubberBandInProgress):
(WebCore::ScrollAnimatorMac::handleWheelEvent):
(WebCore::ScrollAnimatorMac::snapRubberBandTimerFired):
* platform/mac/ScrollController.h: Copied from WebCore/platform/mac/ScrollElasticityController.h.
(WebCore::ScrollControllerClient::~ScrollControllerClient):
(WebCore::ScrollElasticityControllerClient::~ScrollElasticityControllerClient): Deleted.
* platform/mac/ScrollController.mm: Copied from WebCore/platform/mac/ScrollElasticityController.mm.
(WebCore::ScrollController::ScrollController):
(WebCore::ScrollController::handleWheelEvent):
(WebCore::ScrollController::snapRubberBandTimerFired):
(WebCore::ScrollController::isRubberBandInProgress):
(WebCore::ScrollController::stopSnapRubberbandTimer):
(WebCore::ScrollController::snapRubberBand):
(WebCore::ScrollController::shouldRubberBandInHorizontalDirection):
(WebCore::ScrollElasticityController::ScrollElasticityController): Deleted.
(WebCore::ScrollElasticityController::handleWheelEvent): Deleted.
(WebCore::ScrollElasticityController::snapRubberBandTimerFired): Deleted.
(WebCore::ScrollElasticityController::isRubberBandInProgress): Deleted.
(WebCore::ScrollElasticityController::stopSnapRubberbandTimer): Deleted.
(WebCore::ScrollElasticityController::snapRubberBand): Deleted.
(WebCore::ScrollElasticityController::shouldRubberBandInHorizontalDirection): Deleted.
* platform/mac/ScrollElasticityController.h: Removed.
* platform/mac/ScrollElasticityController.mm: Removed.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorePlatformMaccmake">trunk/Source/WebCore/PlatformMac.cmake</a></li>
<li><a href="#trunkSourceWebCoreWebCoreorder">trunk/Source/WebCore/WebCore.order</a></li>
<li><a href="#trunkSourceWebCoreWebCorexcodeprojprojectpbxproj">trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj</a></li>
<li><a href="#trunkSourceWebCorepagescrollingmacScrollingTreeFrameScrollingNodeMach">trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h</a></li>
<li><a href="#trunkSourceWebCorepagescrollingmacScrollingTreeFrameScrollingNodeMacmm">trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm</a></li>
<li><a href="#trunkSourceWebCoreplatformmacScrollAnimatorMach">trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.h</a></li>
<li><a href="#trunkSourceWebCoreplatformmacScrollAnimatorMacmm">trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreplatformmacScrollControllerh">trunk/Source/WebCore/platform/mac/ScrollController.h</a></li>
<li><a href="#trunkSourceWebCoreplatformmacScrollControllermm">trunk/Source/WebCore/platform/mac/ScrollController.mm</a></li>
</ul>
<h3>Removed Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreplatformmacScrollElasticityControllerh">trunk/Source/WebCore/platform/mac/ScrollElasticityController.h</a></li>
<li><a href="#trunkSourceWebCoreplatformmacScrollElasticityControllermm">trunk/Source/WebCore/platform/mac/ScrollElasticityController.mm</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/ChangeLog 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -1,3 +1,47 @@
</span><ins>+2015-02-20 Brent Fulgham <bfulgham@apple.com>
+
+ Rename ScrollElasticityController to ScrollController
+ https://bugs.webkit.org/show_bug.cgi?id=141842
+
+ Reviewed by Simon Fraser.
+
+ No change in functionality.
+
+ * PlatformMac.cmake:
+ * WebCore.order:
+ * WebCore.xcodeproj/project.pbxproj:
+ * page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h:
+ * page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm:
+ (WebCore::ScrollingTreeFrameScrollingNodeMac::ScrollingTreeFrameScrollingNodeMac):
+ (WebCore::ScrollingTreeFrameScrollingNodeMac::handleWheelEvent):
+ (WebCore::ScrollingTreeFrameScrollingNodeMac::startSnapRubberbandTimer):
+ * platform/mac/ScrollAnimatorMac.h:
+ * platform/mac/ScrollAnimatorMac.mm:
+ (WebCore::ScrollAnimatorMac::ScrollAnimatorMac):
+ (WebCore::ScrollAnimatorMac::isRubberBandInProgress):
+ (WebCore::ScrollAnimatorMac::handleWheelEvent):
+ (WebCore::ScrollAnimatorMac::snapRubberBandTimerFired):
+ * platform/mac/ScrollController.h: Copied from WebCore/platform/mac/ScrollElasticityController.h.
+ (WebCore::ScrollControllerClient::~ScrollControllerClient):
+ (WebCore::ScrollElasticityControllerClient::~ScrollElasticityControllerClient): Deleted.
+ * platform/mac/ScrollController.mm: Copied from WebCore/platform/mac/ScrollElasticityController.mm.
+ (WebCore::ScrollController::ScrollController):
+ (WebCore::ScrollController::handleWheelEvent):
+ (WebCore::ScrollController::snapRubberBandTimerFired):
+ (WebCore::ScrollController::isRubberBandInProgress):
+ (WebCore::ScrollController::stopSnapRubberbandTimer):
+ (WebCore::ScrollController::snapRubberBand):
+ (WebCore::ScrollController::shouldRubberBandInHorizontalDirection):
+ (WebCore::ScrollElasticityController::ScrollElasticityController): Deleted.
+ (WebCore::ScrollElasticityController::handleWheelEvent): Deleted.
+ (WebCore::ScrollElasticityController::snapRubberBandTimerFired): Deleted.
+ (WebCore::ScrollElasticityController::isRubberBandInProgress): Deleted.
+ (WebCore::ScrollElasticityController::stopSnapRubberbandTimer): Deleted.
+ (WebCore::ScrollElasticityController::snapRubberBand): Deleted.
+ (WebCore::ScrollElasticityController::shouldRubberBandInHorizontalDirection): Deleted.
+ * platform/mac/ScrollElasticityController.h: Removed.
+ * platform/mac/ScrollElasticityController.mm: Removed.
+
</ins><span class="cx"> 2015-02-20 Alexey Proskuryakov <ap@apple.com>
</span><span class="cx">
</span><span class="cx"> Remove svn:keywords property.
</span></span></pre></div>
<a id="trunkSourceWebCorePlatformMaccmake"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/PlatformMac.cmake (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/PlatformMac.cmake 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/PlatformMac.cmake 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -126,7 +126,7 @@
</span><span class="cx"> platform/mac/PurgeableBufferMac.cpp
</span><span class="cx"> platform/mac/SSLKeyGeneratorMac.cpp
</span><span class="cx"> platform/mac/ScrollAnimatorMac.mm
</span><del>- platform/mac/ScrollElasticityController.mm
</del><ins>+ platform/mac/ScrollController.mm
</ins><span class="cx"> platform/mac/ScrollViewMac.mm
</span><span class="cx"> platform/mac/ScrollbarThemeMac.mm
</span><span class="cx"> platform/mac/SerializedPlatformRepresentationMac.mm
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCoreorder"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.order (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.order 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/WebCore.order 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -2007,7 +2007,7 @@
</span><span class="cx"> __ZN7WebCore14ScrollAnimator6createEPNS_14ScrollableAreaE
</span><span class="cx"> __ZN7WebCore17ScrollAnimatorMacC2EPNS_14ScrollableAreaE
</span><span class="cx"> __ZN7WebCore14ScrollAnimatorC2EPNS_14ScrollableAreaE
</span><del>-__ZN7WebCore26ScrollElasticityControllerC1EPNS_32ScrollElasticityControllerClientE
</del><ins>+__ZN7WebCore26ScrollControllerC1EPNS_32ScrollControllerClientE
</ins><span class="cx"> -[WebScrollAnimationHelperDelegate initWithScrollAnimator:]
</span><span class="cx"> -[WebScrollbarPainterControllerDelegate initWithScrollableArea:]
</span><span class="cx"> __ZN7WebCore17ScrollAnimatorMac23didAddVerticalScrollbarEPNS_9ScrollbarE
</span><span class="lines">@@ -2333,7 +2333,7 @@
</span><span class="cx"> __ZN7WebCore9FrameView23sendResizeEventIfNeededEv
</span><span class="cx"> __ZN7WebCore10ScrollView26invalidateScrollCornerRectERKNS_7IntRectE
</span><span class="cx"> __ZNK7WebCore17ScrollAnimatorMac22isRubberBandInProgressEv
</span><del>-__ZNK7WebCore26ScrollElasticityController22isRubberBandInProgressEv
</del><ins>+__ZNK7WebCore26ScrollController22isRubberBandInProgressEv
</ins><span class="cx"> __ZN7WebCore10ScrollView19updateOverhangAreasEv
</span><span class="cx"> __ZN7WebCore10ScrollView33calculateOverhangAreasForPaintingERNS_7IntRectES2_
</span><span class="cx"> __ZNK7WebCore6Chrome19contentsSizeChangedEPNS_5FrameERKNS_7IntSizeE
</span><span class="lines">@@ -12665,7 +12665,7 @@
</span><span class="cx"> __ZNK7WebCore6Widget17convertToRootViewERKNS_7IntRectE
</span><span class="cx"> __ZN7WebCore11RenderImage11nodeAtPointERKNS_14HitTestRequestERNS_13HitTestResultERKNS_15HitTestLocationERKNS_11LayoutPointENS_13HitTestActionE
</span><span class="cx"> __ZN7WebCore13ScrollingTree22updateBackForwardStateEbb
</span><del>-__ZN7WebCore26ScrollElasticityController16handleWheelEventERKNS_18PlatformWheelEventE
</del><ins>+__ZN7WebCore26ScrollController16handleWheelEventERKNS_18PlatformWheelEventE
</ins><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac17pinnedInDirectionERKNS_9FloatSizeE
</span><span class="cx"> __ZN7WebCore29ScrollingTreeScrollingNodeMac17pinnedInDirectionERKNS_9FloatSizeE
</span><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac27shouldRubberBandInDirectionENS_15ScrollDirectionE
</span><span class="lines">@@ -12738,11 +12738,11 @@
</span><span class="cx"> __ZN7WebCore12EventHandler28fakeMouseMoveEventTimerFiredEPNS_5TimerIS0_EE
</span><span class="cx"> __ZN7WebCore21PlatformKeyboardEvent23getCurrentModifierStateERbS1_S1_S1_
</span><span class="cx"> __ZN7WebCore9Scrollbar19updateThumbPositionEv
</span><del>-__ZN7WebCore26ScrollElasticityController14snapRubberBandEv
</del><ins>+__ZN7WebCore26ScrollController14snapRubberBandEv
</ins><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac24startSnapRubberbandTimerEv
</span><span class="cx"> __ZN7WebCore29ScrollingTreeScrollingNodeMac24startSnapRubberbandTimerEv
</span><span class="cx"> ____ZN7WebCore29ScrollingTreeScrollingNodeMac24startSnapRubberbandTimerEv_block_invoke
</span><del>-__ZN7WebCore26ScrollElasticityController24snapRubberBandTimerFiredEv
</del><ins>+__ZN7WebCore26ScrollController24snapRubberBandTimerFiredEv
</ins><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac22absoluteScrollPositionEv
</span><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac21canScrollHorizontallyEv
</span><span class="cx"> __ZThn112_N7WebCore29ScrollingTreeScrollingNodeMac19canScrollVerticallyEv
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCorexcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -786,8 +786,8 @@
</span><span class="cx"> 1A927FD31416A15B003A83C8 /* npruntime.h in Headers */ = {isa = PBXBuildFile; fileRef = 1A927FD01416A15B003A83C8 /* npruntime.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="cx"> 1A927FD41416A15B003A83C8 /* nptypes.h in Headers */ = {isa = PBXBuildFile; fileRef = 1A927FD11416A15B003A83C8 /* nptypes.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="cx"> 1A98956B0AA78F80005EF5EF /* URLCF.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1A98956A0AA78F80005EF5EF /* URLCF.cpp */; };
</span><del>- 1AA84F04143BA7BD0051D153 /* ScrollElasticityController.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1AA84F02143BA7BD0051D153 /* ScrollElasticityController.mm */; };
- 1AA84F05143BA7BD0051D153 /* ScrollElasticityController.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA84F03143BA7BD0051D153 /* ScrollElasticityController.h */; settings = {ATTRIBUTES = (Private, ); }; };
</del><ins>+ 1AA84F04143BA7BD0051D153 /* ScrollController.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1AA84F02143BA7BD0051D153 /* ScrollController.mm */; };
+ 1AA84F05143BA7BD0051D153 /* ScrollController.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA84F03143BA7BD0051D153 /* ScrollController.h */; settings = {ATTRIBUTES = (Private, ); }; };
</ins><span class="cx"> 1AA8799011CBE846003C664F /* PluginStrategy.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA8798F11CBE846003C664F /* PluginStrategy.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="cx"> 1AAADDA314DB409F00AF64B3 /* ScrollingTree.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1AAADDA114DB409F00AF64B3 /* ScrollingTree.cpp */; };
</span><span class="cx"> 1AAADDA414DB409F00AF64B3 /* ScrollingTree.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AAADDA214DB409F00AF64B3 /* ScrollingTree.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="lines">@@ -7795,8 +7795,8 @@
</span><span class="cx"> 1A927FD01416A15B003A83C8 /* npruntime.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = npruntime.h; sourceTree = "<group>"; };
</span><span class="cx"> 1A927FD11416A15B003A83C8 /* nptypes.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = nptypes.h; sourceTree = "<group>"; };
</span><span class="cx"> 1A98956A0AA78F80005EF5EF /* URLCF.cpp */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; path = URLCF.cpp; sourceTree = "<group>"; };
</span><del>- 1AA84F02143BA7BD0051D153 /* ScrollElasticityController.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ScrollElasticityController.mm; sourceTree = "<group>"; };
- 1AA84F03143BA7BD0051D153 /* ScrollElasticityController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollElasticityController.h; sourceTree = "<group>"; };
</del><ins>+ 1AA84F02143BA7BD0051D153 /* ScrollController.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ScrollController.mm; sourceTree = "<group>"; };
+ 1AA84F03143BA7BD0051D153 /* ScrollController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollController.h; sourceTree = "<group>"; };
</ins><span class="cx"> 1AA8798F11CBE846003C664F /* PluginStrategy.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PluginStrategy.h; sourceTree = "<group>"; };
</span><span class="cx"> 1AAADDA114DB409F00AF64B3 /* ScrollingTree.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ScrollingTree.cpp; sourceTree = "<group>"; };
</span><span class="cx"> 1AAADDA214DB409F00AF64B3 /* ScrollingTree.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollingTree.h; sourceTree = "<group>"; };
</span><span class="lines">@@ -16551,8 +16551,8 @@
</span><span class="cx"> BC51156D12B1749C00C96754 /* ScrollAnimatorMac.mm */,
</span><span class="cx"> BC8B853C0E7C7F1100AB6984 /* ScrollbarThemeMac.h */,
</span><span class="cx"> BCEF869E0E844E9D00A85CD5 /* ScrollbarThemeMac.mm */,
</span><del>- 1AA84F03143BA7BD0051D153 /* ScrollElasticityController.h */,
- 1AA84F02143BA7BD0051D153 /* ScrollElasticityController.mm */,
</del><ins>+ 1AA84F03143BA7BD0051D153 /* ScrollController.h */,
+ 1AA84F02143BA7BD0051D153 /* ScrollController.mm */,
</ins><span class="cx"> 9353676A09AED88B00D35CD6 /* ScrollViewMac.mm */,
</span><span class="cx"> 077AF14118F4B1BB0001ED61 /* SerializedPlatformRepresentationMac.h */,
</span><span class="cx"> 077AF14218F4B1BB0001ED61 /* SerializedPlatformRepresentationMac.mm */,
</span><span class="lines">@@ -26048,7 +26048,7 @@
</span><span class="cx"> BC8B853E0E7C7F1100AB6984 /* ScrollbarThemeMac.h in Headers */,
</span><span class="cx"> 0FE71406142170B800DB33BA /* ScrollbarThemeMock.h in Headers */,
</span><span class="cx"> 5D925B680F64D4DD00B847F0 /* ScrollBehavior.h in Headers */,
</span><del>- 1AA84F05143BA7BD0051D153 /* ScrollElasticityController.h in Headers */,
</del><ins>+ 1AA84F05143BA7BD0051D153 /* ScrollController.h in Headers */,
</ins><span class="cx"> 0F605AED15F94848004DF0C0 /* ScrollingConstraints.h in Headers */,
</span><span class="cx"> 1AF62EE814DA22A70041556C /* ScrollingCoordinator.h in Headers */,
</span><span class="cx"> 0FC4E40D187F82E10045882C /* ScrollingCoordinatorIOS.h in Headers */,
</span><span class="lines">@@ -29450,7 +29450,7 @@
</span><span class="cx"> BCEF869F0E844E9D00A85CD5 /* ScrollbarThemeMac.mm in Sources */,
</span><span class="cx"> 0FE71405142170B800DB33BA /* ScrollbarThemeMock.cpp in Sources */,
</span><span class="cx"> 5D925B670F64D4DD00B847F0 /* ScrollBehavior.cpp in Sources */,
</span><del>- 1AA84F04143BA7BD0051D153 /* ScrollElasticityController.mm in Sources */,
</del><ins>+ 1AA84F04143BA7BD0051D153 /* ScrollController.mm in Sources */,
</ins><span class="cx"> 0F605AEC15F94848004DF0C0 /* ScrollingConstraints.cpp in Sources */,
</span><span class="cx"> 1AF62EE714DA22A70041556C /* ScrollingCoordinator.cpp in Sources */,
</span><span class="cx"> 0FC4E40E187F82E10045882C /* ScrollingCoordinatorIOS.mm in Sources */,
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingmacScrollingTreeFrameScrollingNodeMach"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.h 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -28,7 +28,7 @@
</span><span class="cx">
</span><span class="cx"> #if ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC)
</span><span class="cx">
</span><del>-#include "ScrollElasticityController.h"
</del><ins>+#include "ScrollController.h"
</ins><span class="cx"> #include "ScrollbarThemeMac.h"
</span><span class="cx"> #include "ScrollingTreeFrameScrollingNode.h"
</span><span class="cx"> #include <wtf/RetainPtr.h>
</span><span class="lines">@@ -37,7 +37,7 @@
</span><span class="cx">
</span><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><del>-class ScrollingTreeFrameScrollingNodeMac : public ScrollingTreeFrameScrollingNode, private ScrollElasticityControllerClient {
</del><ins>+class ScrollingTreeFrameScrollingNodeMac : public ScrollingTreeFrameScrollingNode, private ScrollControllerClient {
</ins><span class="cx"> public:
</span><span class="cx"> WEBCORE_EXPORT static PassRefPtr<ScrollingTreeFrameScrollingNode> create(ScrollingTree&, ScrollingNodeID);
</span><span class="cx"> virtual ~ScrollingTreeFrameScrollingNodeMac();
</span><span class="lines">@@ -50,7 +50,7 @@
</span><span class="cx"> virtual void updateAfterChildren(const ScrollingStateNode&) override;
</span><span class="cx"> virtual void handleWheelEvent(const PlatformWheelEvent&) override;
</span><span class="cx">
</span><del>- // ScrollElasticityController member functions.
</del><ins>+ // ScrollController member functions.
</ins><span class="cx"> virtual bool allowsHorizontalStretching(const PlatformWheelEvent&) override;
</span><span class="cx"> virtual bool allowsVerticalStretching(const PlatformWheelEvent&) override;
</span><span class="cx"> virtual IntSize stretchAmount() override;
</span><span class="lines">@@ -82,7 +82,7 @@
</span><span class="cx">
</span><span class="cx"> void logExposedUnfilledArea();
</span><span class="cx">
</span><del>- ScrollElasticityController m_scrollElasticityController;
</del><ins>+ ScrollController m_scrollController;
</ins><span class="cx"> RetainPtr<CFRunLoopTimerRef> m_snapRubberbandTimer;
</span><span class="cx">
</span><span class="cx"> RetainPtr<CALayer> m_scrollLayer;
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingmacScrollingTreeFrameScrollingNodeMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeFrameScrollingNodeMac.mm 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -57,7 +57,7 @@
</span><span class="cx">
</span><span class="cx"> ScrollingTreeFrameScrollingNodeMac::ScrollingTreeFrameScrollingNodeMac(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
</span><span class="cx"> : ScrollingTreeFrameScrollingNode(scrollingTree, nodeID)
</span><del>- , m_scrollElasticityController(this)
</del><ins>+ , m_scrollController(this)
</ins><span class="cx"> , m_verticalScrollbarPainter(0)
</span><span class="cx"> , m_horizontalScrollbarPainter(0)
</span><span class="cx"> , m_lastScrollHadUnfilledPixels(false)
</span><span class="lines">@@ -153,7 +153,7 @@
</span><span class="cx"> [m_horizontalScrollbarPainter setUsePresentationValue:NO];
</span><span class="cx"> }
</span><span class="cx">
</span><del>- m_scrollElasticityController.handleWheelEvent(wheelEvent);
</del><ins>+ m_scrollController.handleWheelEvent(wheelEvent);
</ins><span class="cx"> scrollingTree().setOrClearLatchedNode(wheelEvent, scrollingNodeID());
</span><span class="cx"> scrollingTree().handleWheelEventPhase(wheelEvent.phase());
</span><span class="cx"> }
</span><span class="lines">@@ -303,7 +303,7 @@
</span><span class="cx"> CFTimeInterval timerInterval = 1.0 / 60.0;
</span><span class="cx">
</span><span class="cx"> m_snapRubberbandTimer = adoptCF(CFRunLoopTimerCreateWithHandler(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent() + timerInterval, timerInterval, 0, 0, ^(CFRunLoopTimerRef) {
</span><del>- m_scrollElasticityController.snapRubberBandTimerFired();
</del><ins>+ m_scrollController.snapRubberBandTimerFired();
</ins><span class="cx"> }));
</span><span class="cx"> CFRunLoopAddTimer(CFRunLoopGetCurrent(), m_snapRubberbandTimer.get(), kCFRunLoopDefaultMode);
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollAnimatorMach"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.h (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.h 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.h 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -1,5 +1,5 @@
</span><span class="cx"> /*
</span><del>- * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
</del><ins>+ * Copyright (C) 2010, 2011, 2014-2015 Apple Inc. All rights reserved.
</ins><span class="cx"> *
</span><span class="cx"> * Redistribution and use in source and binary forms, with or without
</span><span class="cx"> * modification, are permitted provided that the following conditions
</span><span class="lines">@@ -32,7 +32,7 @@
</span><span class="cx"> #include "FloatPoint.h"
</span><span class="cx"> #include "FloatSize.h"
</span><span class="cx"> #include "ScrollAnimator.h"
</span><del>-#include "ScrollElasticityController.h"
</del><ins>+#include "ScrollController.h"
</ins><span class="cx"> #include "Timer.h"
</span><span class="cx"> #include <wtf/RetainPtr.h>
</span><span class="cx">
</span><span class="lines">@@ -43,14 +43,14 @@
</span><span class="cx"> typedef id ScrollbarPainterController;
</span><span class="cx">
</span><span class="cx"> #if !ENABLE(RUBBER_BANDING)
</span><del>-class ScrollElasticityControllerClient { };
</del><ins>+class ScrollControllerClient { };
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><span class="cx"> class Scrollbar;
</span><span class="cx">
</span><del>-class ScrollAnimatorMac : public ScrollAnimator, private ScrollElasticityControllerClient {
</del><ins>+class ScrollAnimatorMac : public ScrollAnimator, private ScrollControllerClient {
</ins><span class="cx">
</span><span class="cx"> public:
</span><span class="cx"> ScrollAnimatorMac(ScrollableArea*);
</span><span class="lines">@@ -139,7 +139,7 @@
</span><span class="cx"> virtual bool isRubberBandInProgress() const override;
</span><span class="cx">
</span><span class="cx"> #if ENABLE(RUBBER_BANDING)
</span><del>- /// ScrollElasticityControllerClient member functions.
</del><ins>+ /// ScrollControllerClient member functions.
</ins><span class="cx"> virtual IntSize stretchAmount() override;
</span><span class="cx"> virtual bool allowsHorizontalStretching(const PlatformWheelEvent&) override;
</span><span class="cx"> virtual bool allowsVerticalStretching(const PlatformWheelEvent&) override;
</span><span class="lines">@@ -159,7 +159,7 @@
</span><span class="cx">
</span><span class="cx"> bool isAlreadyPinnedInDirectionOfGesture(const PlatformWheelEvent&, ScrollEventAxis);
</span><span class="cx">
</span><del>- ScrollElasticityController m_scrollElasticityController;
</del><ins>+ ScrollController m_scrollController;
</ins><span class="cx"> Timer m_snapRubberBandTimer;
</span><span class="cx"> #endif
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollAnimatorMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -644,7 +644,7 @@
</span><span class="cx"> , m_initialScrollbarPaintTimer(*this, &ScrollAnimatorMac::initialScrollbarPaintTimerFired)
</span><span class="cx"> , m_sendContentAreaScrolledTimer(*this, &ScrollAnimatorMac::sendContentAreaScrolledTimerFired)
</span><span class="cx"> #if ENABLE(RUBBER_BANDING)
</span><del>- , m_scrollElasticityController(this)
</del><ins>+ , m_scrollController(this)
</ins><span class="cx"> , m_snapRubberBandTimer(*this, &ScrollAnimatorMac::snapRubberBandTimerFired)
</span><span class="cx"> #endif
</span><span class="cx"> , m_haveScrolledSincePageLoad(false)
</span><span class="lines">@@ -770,7 +770,7 @@
</span><span class="cx"> #if !ENABLE(RUBBER_BANDING)
</span><span class="cx"> return false;
</span><span class="cx"> #else
</span><del>- return m_scrollElasticityController.isRubberBandInProgress();
</del><ins>+ return m_scrollController.isRubberBandInProgress();
</ins><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx">
</span><span class="lines">@@ -1098,7 +1098,7 @@
</span><span class="cx"> return ScrollAnimator::handleWheelEvent(wheelEvent);
</span><span class="cx"> }
</span><span class="cx">
</span><del>- bool didHandleEvent = m_scrollElasticityController.handleWheelEvent(wheelEvent);
</del><ins>+ bool didHandleEvent = m_scrollController.handleWheelEvent(wheelEvent);
</ins><span class="cx">
</span><span class="cx"> if (didHandleEvent)
</span><span class="cx"> handleWheelEventPhase(wheelEvent.phase());
</span><span class="lines">@@ -1283,7 +1283,7 @@
</span><span class="cx">
</span><span class="cx"> void ScrollAnimatorMac::snapRubberBandTimerFired()
</span><span class="cx"> {
</span><del>- m_scrollElasticityController.snapRubberBandTimerFired();
</del><ins>+ m_scrollController.snapRubberBandTimerFired();
</ins><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollControllerhfromrev180420trunkSourceWebCoreplatformmacScrollElasticityControllerh"></a>
<div class="copfile"><h4>Copied: trunk/Source/WebCore/platform/mac/ScrollController.h (from rev 180420, trunk/Source/WebCore/platform/mac/ScrollElasticityController.h) (0 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollController.h (rev 0)
+++ trunk/Source/WebCore/platform/mac/ScrollController.h 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -0,0 +1,107 @@
</span><ins>+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ScrollController_h
+#define ScrollController_h
+
+#if ENABLE(RUBBER_BANDING)
+
+#include "FloatPoint.h"
+#include "FloatSize.h"
+#include "ScrollTypes.h"
+#include <wtf/Noncopyable.h>
+
+namespace WebCore {
+
+class PlatformWheelEvent;
+
+class ScrollControllerClient {
+protected:
+ virtual ~ScrollControllerClient() { }
+
+public:
+ virtual bool allowsHorizontalStretching(const PlatformWheelEvent&) = 0;
+ virtual bool allowsVerticalStretching(const PlatformWheelEvent&) = 0;
+ virtual IntSize stretchAmount() = 0;
+ virtual bool pinnedInDirection(const FloatSize&) = 0;
+ virtual bool canScrollHorizontally() = 0;
+ virtual bool canScrollVertically() = 0;
+ virtual bool shouldRubberBandInDirection(ScrollDirection) = 0;
+
+ // Return the absolute scroll position, not relative to the scroll origin.
+ virtual WebCore::IntPoint absoluteScrollPosition() = 0;
+
+ virtual void immediateScrollBy(const FloatSize&) = 0;
+ virtual void immediateScrollByWithoutContentEdgeConstraints(const FloatSize&) = 0;
+ virtual void startSnapRubberbandTimer() = 0;
+ virtual void stopSnapRubberbandTimer() = 0;
+
+ // If the current scroll position is within the overhang area, this function will cause
+ // the page to scroll to the nearest boundary point.
+ virtual void adjustScrollPositionToBoundsIfNecessary() = 0;
+};
+
+class ScrollController {
+ WTF_MAKE_NONCOPYABLE(ScrollController);
+
+public:
+ explicit ScrollController(ScrollControllerClient*);
+
+ bool handleWheelEvent(const PlatformWheelEvent&);
+ void snapRubberBandTimerFired();
+
+ bool isRubberBandInProgress() const;
+
+private:
+ void stopSnapRubberbandTimer();
+ void snapRubberBand();
+
+ bool shouldRubberBandInHorizontalDirection(const PlatformWheelEvent&);
+
+ ScrollControllerClient* m_client;
+
+ bool m_inScrollGesture;
+ bool m_momentumScrollInProgress;
+ bool m_ignoreMomentumScrolls;
+
+ CFTimeInterval m_lastMomentumScrollTimestamp;
+ FloatSize m_overflowScrollDelta;
+ FloatSize m_stretchScrollForce;
+ FloatSize m_momentumVelocity;
+
+ // Rubber band state.
+ CFTimeInterval m_startTime;
+ FloatSize m_startStretch;
+ FloatPoint m_origOrigin;
+ FloatSize m_origVelocity;
+
+ bool m_snapRubberbandTimerIsActive;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(RUBBER_BANDING)
+
+#endif // ScrollController_h
</ins></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollControllermmfromrev180420trunkSourceWebCoreplatformmacScrollElasticityControllermm"></a>
<div class="copfile"><h4>Copied: trunk/Source/WebCore/platform/mac/ScrollController.mm (from rev 180420, trunk/Source/WebCore/platform/mac/ScrollElasticityController.mm) (0 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollController.mm (rev 0)
+++ trunk/Source/WebCore/platform/mac/ScrollController.mm 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -0,0 +1,406 @@
</span><ins>+/*
+ * Copyright (C) 2011, 2014-2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "ScrollController.h"
+
+#include "PlatformWheelEvent.h"
+#include "WebCoreSystemInterface.h"
+#include <sys/sysctl.h>
+#include <sys/time.h>
+
+#if ENABLE(RUBBER_BANDING)
+
+static NSTimeInterval systemUptime()
+{
+ if ([[NSProcessInfo processInfo] respondsToSelector:@selector(systemUptime)])
+ return [[NSProcessInfo processInfo] systemUptime];
+
+ // Get how long system has been up. Found by looking getting "boottime" from the kernel.
+ static struct timeval boottime = {0, 0};
+ if (!boottime.tv_sec) {
+ int mib[2] = {CTL_KERN, KERN_BOOTTIME};
+ size_t size = sizeof(boottime);
+ if (-1 == sysctl(mib, 2, &boottime, &size, 0, 0))
+ boottime.tv_sec = 0;
+ }
+ struct timeval now;
+ if (boottime.tv_sec && -1 != gettimeofday(&now, 0)) {
+ struct timeval uptime;
+ timersub(&now, &boottime, &uptime);
+ NSTimeInterval result = uptime.tv_sec + (uptime.tv_usec / 1E+6);
+ return result;
+ }
+ return 0;
+}
+
+
+namespace WebCore {
+
+static const float scrollVelocityZeroingTimeout = 0.10f;
+static const float rubberbandDirectionLockStretchRatio = 1;
+static const float rubberbandMinimumRequiredDeltaBeforeStretch = 10;
+
+static float elasticDeltaForTimeDelta(float initialPosition, float initialVelocity, float elapsedTime)
+{
+ return wkNSElasticDeltaForTimeDelta(initialPosition, initialVelocity, elapsedTime);
+}
+
+static float elasticDeltaForReboundDelta(float delta)
+{
+ return wkNSElasticDeltaForReboundDelta(delta);
+}
+
+static float reboundDeltaForElasticDelta(float delta)
+{
+ return wkNSReboundDeltaForElasticDelta(delta);
+}
+
+static float scrollWheelMultiplier()
+{
+ static float multiplier = -1;
+ if (multiplier < 0) {
+ multiplier = [[NSUserDefaults standardUserDefaults] floatForKey:@"NSScrollWheelMultiplier"];
+ if (multiplier <= 0)
+ multiplier = 1;
+ }
+ return multiplier;
+}
+
+ScrollController::ScrollController(ScrollControllerClient* client)
+ : m_client(client)
+ , m_inScrollGesture(false)
+ , m_momentumScrollInProgress(false)
+ , m_ignoreMomentumScrolls(false)
+ , m_lastMomentumScrollTimestamp(0)
+ , m_startTime(0)
+ , m_snapRubberbandTimerIsActive(false)
+{
+}
+
+bool ScrollController::handleWheelEvent(const PlatformWheelEvent& wheelEvent)
+{
+ if (wheelEvent.phase() == PlatformWheelEventPhaseBegan) {
+ // First, check if we should rubber-band at all.
+ if (m_client->pinnedInDirection(FloatSize(-wheelEvent.deltaX(), 0))
+ && !shouldRubberBandInHorizontalDirection(wheelEvent))
+ return false;
+
+ m_inScrollGesture = true;
+ m_momentumScrollInProgress = false;
+ m_ignoreMomentumScrolls = false;
+ m_lastMomentumScrollTimestamp = 0;
+ m_momentumVelocity = FloatSize();
+
+ IntSize stretchAmount = m_client->stretchAmount();
+ m_stretchScrollForce.setWidth(reboundDeltaForElasticDelta(stretchAmount.width()));
+ m_stretchScrollForce.setHeight(reboundDeltaForElasticDelta(stretchAmount.height()));
+ m_overflowScrollDelta = FloatSize();
+
+ stopSnapRubberbandTimer();
+
+ return true;
+ }
+
+ if (wheelEvent.phase() == PlatformWheelEventPhaseEnded) {
+ snapRubberBand();
+ return true;
+ }
+
+ bool isMomentumScrollEvent = (wheelEvent.momentumPhase() != PlatformWheelEventPhaseNone);
+ if (m_ignoreMomentumScrolls && (isMomentumScrollEvent || m_snapRubberbandTimerIsActive)) {
+ if (wheelEvent.momentumPhase() == PlatformWheelEventPhaseEnded) {
+ m_ignoreMomentumScrolls = false;
+ return true;
+ }
+ return false;
+ }
+
+ float deltaX = m_overflowScrollDelta.width();
+ float deltaY = m_overflowScrollDelta.height();
+
+ // Reset overflow values because we may decide to remove delta at various points and put it into overflow.
+ m_overflowScrollDelta = FloatSize();
+
+ IntSize stretchAmount = m_client->stretchAmount();
+ bool isVerticallyStretched = stretchAmount.height();
+ bool isHorizontallyStretched = stretchAmount.width();
+
+ float eventCoalescedDeltaX;
+ float eventCoalescedDeltaY;
+
+ if (isVerticallyStretched || isHorizontallyStretched) {
+ eventCoalescedDeltaX = -wheelEvent.unacceleratedScrollingDeltaX();
+ eventCoalescedDeltaY = -wheelEvent.unacceleratedScrollingDeltaY();
+ } else {
+ eventCoalescedDeltaX = -wheelEvent.deltaX();
+ eventCoalescedDeltaY = -wheelEvent.deltaY();
+ }
+
+ deltaX += eventCoalescedDeltaX;
+ deltaY += eventCoalescedDeltaY;
+
+ // Slightly prefer scrolling vertically by applying the = case to deltaY
+ if (fabsf(deltaY) >= fabsf(deltaX))
+ deltaX = 0;
+ else
+ deltaY = 0;
+
+ bool shouldStretch = false;
+
+ PlatformWheelEventPhase momentumPhase = wheelEvent.momentumPhase();
+
+ // If we are starting momentum scrolling then do some setup.
+ if (!m_momentumScrollInProgress && (momentumPhase == PlatformWheelEventPhaseBegan || momentumPhase == PlatformWheelEventPhaseChanged))
+ m_momentumScrollInProgress = true;
+
+ CFTimeInterval timeDelta = wheelEvent.timestamp() - m_lastMomentumScrollTimestamp;
+ if (m_inScrollGesture || m_momentumScrollInProgress) {
+ if (m_lastMomentumScrollTimestamp && timeDelta > 0 && timeDelta < scrollVelocityZeroingTimeout) {
+ m_momentumVelocity.setWidth(eventCoalescedDeltaX / (float)timeDelta);
+ m_momentumVelocity.setHeight(eventCoalescedDeltaY / (float)timeDelta);
+ m_lastMomentumScrollTimestamp = wheelEvent.timestamp();
+ } else {
+ m_lastMomentumScrollTimestamp = wheelEvent.timestamp();
+ m_momentumVelocity = FloatSize();
+ }
+
+ if (isVerticallyStretched) {
+ if (!isHorizontallyStretched && m_client->pinnedInDirection(FloatSize(deltaX, 0))) {
+ // Stretching only in the vertical.
+ if (deltaY && (fabsf(deltaX / deltaY) < rubberbandDirectionLockStretchRatio))
+ deltaX = 0;
+ else if (fabsf(deltaX) < rubberbandMinimumRequiredDeltaBeforeStretch) {
+ m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
+ deltaX = 0;
+ } else
+ m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
+ }
+ } else if (isHorizontallyStretched) {
+ // Stretching only in the horizontal.
+ if (m_client->pinnedInDirection(FloatSize(0, deltaY))) {
+ if (deltaX && (fabsf(deltaY / deltaX) < rubberbandDirectionLockStretchRatio))
+ deltaY = 0;
+ else if (fabsf(deltaY) < rubberbandMinimumRequiredDeltaBeforeStretch) {
+ m_overflowScrollDelta.setHeight(m_overflowScrollDelta.height() + deltaY);
+ deltaY = 0;
+ } else
+ m_overflowScrollDelta.setHeight(m_overflowScrollDelta.height() + deltaY);
+ }
+ } else {
+ // Not stretching at all yet.
+ if (m_client->pinnedInDirection(FloatSize(deltaX, deltaY))) {
+ if (fabsf(deltaY) >= fabsf(deltaX)) {
+ if (fabsf(deltaX) < rubberbandMinimumRequiredDeltaBeforeStretch) {
+ m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
+ deltaX = 0;
+ } else
+ m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
+ }
+ shouldStretch = true;
+ }
+ }
+ }
+
+ if (deltaX || deltaY) {
+ if (!(shouldStretch || isVerticallyStretched || isHorizontallyStretched)) {
+ if (deltaY) {
+ deltaY *= scrollWheelMultiplier();
+ m_client->immediateScrollBy(FloatSize(0, deltaY));
+ }
+ if (deltaX) {
+ deltaX *= scrollWheelMultiplier();
+ m_client->immediateScrollBy(FloatSize(deltaX, 0));
+ }
+ } else {
+ if (!m_client->allowsHorizontalStretching(wheelEvent)) {
+ deltaX = 0;
+ eventCoalescedDeltaX = 0;
+ } else if (deltaX && !isHorizontallyStretched && !m_client->pinnedInDirection(FloatSize(deltaX, 0))) {
+ deltaX *= scrollWheelMultiplier();
+
+ m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(deltaX, 0));
+ deltaX = 0;
+ }
+
+ if (!m_client->allowsVerticalStretching(wheelEvent)) {
+ deltaY = 0;
+ eventCoalescedDeltaY = 0;
+ } else if (deltaY && !isVerticallyStretched && !m_client->pinnedInDirection(FloatSize(0, deltaY))) {
+ deltaY *= scrollWheelMultiplier();
+
+ m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(0, deltaY));
+ deltaY = 0;
+ }
+
+ IntSize stretchAmount = m_client->stretchAmount();
+
+ if (m_momentumScrollInProgress) {
+ if ((m_client->pinnedInDirection(FloatSize(eventCoalescedDeltaX, eventCoalescedDeltaY)) || (fabsf(eventCoalescedDeltaX) + fabsf(eventCoalescedDeltaY) <= 0)) && m_lastMomentumScrollTimestamp) {
+ m_ignoreMomentumScrolls = true;
+ m_momentumScrollInProgress = false;
+ snapRubberBand();
+ }
+ }
+
+ m_stretchScrollForce.setWidth(m_stretchScrollForce.width() + deltaX);
+ m_stretchScrollForce.setHeight(m_stretchScrollForce.height() + deltaY);
+
+ FloatSize dampedDelta(ceilf(elasticDeltaForReboundDelta(m_stretchScrollForce.width())), ceilf(elasticDeltaForReboundDelta(m_stretchScrollForce.height())));
+
+ m_client->immediateScrollByWithoutContentEdgeConstraints(dampedDelta - stretchAmount);
+ }
+ }
+
+ if (m_momentumScrollInProgress && momentumPhase == PlatformWheelEventPhaseEnded) {
+ m_momentumScrollInProgress = false;
+ m_ignoreMomentumScrolls = false;
+ m_lastMomentumScrollTimestamp = 0;
+ }
+
+ return true;
+}
+
+static inline float roundTowardZero(float num)
+{
+ return num > 0 ? ceilf(num - 0.5f) : floorf(num + 0.5f);
+}
+
+static inline float roundToDevicePixelTowardZero(float num)
+{
+ float roundedNum = roundf(num);
+ if (fabs(num - roundedNum) < 0.125)
+ num = roundedNum;
+
+ return roundTowardZero(num);
+}
+
+void ScrollController::snapRubberBandTimerFired()
+{
+ if (!m_momentumScrollInProgress || m_ignoreMomentumScrolls) {
+ CFTimeInterval timeDelta = [NSDate timeIntervalSinceReferenceDate] - m_startTime;
+
+ if (m_startStretch == FloatSize()) {
+ m_startStretch = m_client->stretchAmount();
+ if (m_startStretch == FloatSize()) {
+ stopSnapRubberbandTimer();
+
+ m_stretchScrollForce = FloatSize();
+ m_startTime = 0;
+ m_startStretch = FloatSize();
+ m_origOrigin = FloatPoint();
+ m_origVelocity = FloatSize();
+ return;
+ }
+
+ m_origOrigin = m_client->absoluteScrollPosition() - m_startStretch;
+ m_origVelocity = m_momentumVelocity;
+
+ // Just like normal scrolling, prefer vertical rubberbanding
+ if (fabsf(m_origVelocity.height()) >= fabsf(m_origVelocity.width()))
+ m_origVelocity.setWidth(0);
+
+ // Don't rubber-band horizontally if it's not possible to scroll horizontally
+ if (!m_client->canScrollHorizontally())
+ m_origVelocity.setWidth(0);
+
+ // Don't rubber-band vertically if it's not possible to scroll vertically
+ if (!m_client->canScrollVertically())
+ m_origVelocity.setHeight(0);
+ }
+
+ FloatPoint delta(roundToDevicePixelTowardZero(elasticDeltaForTimeDelta(m_startStretch.width(), -m_origVelocity.width(), (float)timeDelta)),
+ roundToDevicePixelTowardZero(elasticDeltaForTimeDelta(m_startStretch.height(), -m_origVelocity.height(), (float)timeDelta)));
+
+ if (fabs(delta.x()) >= 1 || fabs(delta.y()) >= 1) {
+ m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(delta.x(), delta.y()) - m_client->stretchAmount());
+
+ FloatSize newStretch = m_client->stretchAmount();
+
+ m_stretchScrollForce.setWidth(reboundDeltaForElasticDelta(newStretch.width()));
+ m_stretchScrollForce.setHeight(reboundDeltaForElasticDelta(newStretch.height()));
+ } else {
+ m_client->adjustScrollPositionToBoundsIfNecessary();
+
+ stopSnapRubberbandTimer();
+ m_stretchScrollForce = FloatSize();
+ m_startTime = 0;
+ m_startStretch = FloatSize();
+ m_origOrigin = FloatPoint();
+ m_origVelocity = FloatSize();
+ }
+ } else {
+ m_startTime = [NSDate timeIntervalSinceReferenceDate];
+ m_startStretch = FloatSize();
+ }
+}
+
+bool ScrollController::isRubberBandInProgress() const
+{
+ if (!m_inScrollGesture && !m_momentumScrollInProgress && !m_snapRubberbandTimerIsActive)
+ return false;
+
+ return !m_client->stretchAmount().isZero();
+}
+
+void ScrollController::stopSnapRubberbandTimer()
+{
+ m_client->stopSnapRubberbandTimer();
+ m_snapRubberbandTimerIsActive = false;
+}
+
+void ScrollController::snapRubberBand()
+{
+ CFTimeInterval timeDelta = systemUptime() - m_lastMomentumScrollTimestamp;
+ if (m_lastMomentumScrollTimestamp && timeDelta >= scrollVelocityZeroingTimeout)
+ m_momentumVelocity = FloatSize();
+
+ m_inScrollGesture = false;
+
+ if (m_snapRubberbandTimerIsActive)
+ return;
+
+ m_startTime = [NSDate timeIntervalSinceReferenceDate];
+ m_startStretch = FloatSize();
+ m_origOrigin = FloatPoint();
+ m_origVelocity = FloatSize();
+
+ m_client->startSnapRubberbandTimer();
+ m_snapRubberbandTimerIsActive = true;
+}
+
+bool ScrollController::shouldRubberBandInHorizontalDirection(const PlatformWheelEvent& wheelEvent)
+{
+ if (wheelEvent.deltaX() > 0)
+ return m_client->shouldRubberBandInDirection(ScrollLeft);
+ if (wheelEvent.deltaX() < 0)
+ return m_client->shouldRubberBandInDirection(ScrollRight);
+
+ return true;
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(RUBBER_BANDING)
</ins></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollElasticityControllerh"></a>
<div class="delfile"><h4>Deleted: trunk/Source/WebCore/platform/mac/ScrollElasticityController.h (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollElasticityController.h 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/platform/mac/ScrollElasticityController.h 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -1,107 +0,0 @@
</span><del>-/*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef ScrollElasticityController_h
-#define ScrollElasticityController_h
-
-#if ENABLE(RUBBER_BANDING)
-
-#include "FloatPoint.h"
-#include "FloatSize.h"
-#include "ScrollTypes.h"
-#include <wtf/Noncopyable.h>
-
-namespace WebCore {
-
-class PlatformWheelEvent;
-
-class ScrollElasticityControllerClient {
-protected:
- virtual ~ScrollElasticityControllerClient() { }
-
-public:
- virtual bool allowsHorizontalStretching(const PlatformWheelEvent&) = 0;
- virtual bool allowsVerticalStretching(const PlatformWheelEvent&) = 0;
- virtual IntSize stretchAmount() = 0;
- virtual bool pinnedInDirection(const FloatSize&) = 0;
- virtual bool canScrollHorizontally() = 0;
- virtual bool canScrollVertically() = 0;
- virtual bool shouldRubberBandInDirection(ScrollDirection) = 0;
-
- // Return the absolute scroll position, not relative to the scroll origin.
- virtual WebCore::IntPoint absoluteScrollPosition() = 0;
-
- virtual void immediateScrollBy(const FloatSize&) = 0;
- virtual void immediateScrollByWithoutContentEdgeConstraints(const FloatSize&) = 0;
- virtual void startSnapRubberbandTimer() = 0;
- virtual void stopSnapRubberbandTimer() = 0;
-
- // If the current scroll position is within the overhang area, this function will cause
- // the page to scroll to the nearest boundary point.
- virtual void adjustScrollPositionToBoundsIfNecessary() = 0;
-};
-
-class ScrollElasticityController {
- WTF_MAKE_NONCOPYABLE(ScrollElasticityController);
-
-public:
- explicit ScrollElasticityController(ScrollElasticityControllerClient*);
-
- bool handleWheelEvent(const PlatformWheelEvent&);
- void snapRubberBandTimerFired();
-
- bool isRubberBandInProgress() const;
-
-private:
- void stopSnapRubberbandTimer();
- void snapRubberBand();
-
- bool shouldRubberBandInHorizontalDirection(const PlatformWheelEvent&);
-
- ScrollElasticityControllerClient* m_client;
-
- bool m_inScrollGesture;
- bool m_momentumScrollInProgress;
- bool m_ignoreMomentumScrolls;
-
- CFTimeInterval m_lastMomentumScrollTimestamp;
- FloatSize m_overflowScrollDelta;
- FloatSize m_stretchScrollForce;
- FloatSize m_momentumVelocity;
-
- // Rubber band state.
- CFTimeInterval m_startTime;
- FloatSize m_startStretch;
- FloatPoint m_origOrigin;
- FloatSize m_origVelocity;
-
- bool m_snapRubberbandTimerIsActive;
-};
-
-} // namespace WebCore
-
-#endif // ENABLE(RUBBER_BANDING)
-
-#endif // ScrollElasticityController_h
</del></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollElasticityControllermm"></a>
<div class="delfile"><h4>Deleted: trunk/Source/WebCore/platform/mac/ScrollElasticityController.mm (180446 => 180447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollElasticityController.mm 2015-02-20 20:41:22 UTC (rev 180446)
+++ trunk/Source/WebCore/platform/mac/ScrollElasticityController.mm 2015-02-20 20:50:48 UTC (rev 180447)
</span><span class="lines">@@ -1,406 +0,0 @@
</span><del>-/*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "ScrollElasticityController.h"
-
-#include "PlatformWheelEvent.h"
-#include "WebCoreSystemInterface.h"
-#include <sys/time.h>
-#include <sys/sysctl.h>
-
-#if ENABLE(RUBBER_BANDING)
-
-static NSTimeInterval systemUptime()
-{
- if ([[NSProcessInfo processInfo] respondsToSelector:@selector(systemUptime)])
- return [[NSProcessInfo processInfo] systemUptime];
-
- // Get how long system has been up. Found by looking getting "boottime" from the kernel.
- static struct timeval boottime = {0, 0};
- if (!boottime.tv_sec) {
- int mib[2] = {CTL_KERN, KERN_BOOTTIME};
- size_t size = sizeof(boottime);
- if (-1 == sysctl(mib, 2, &boottime, &size, 0, 0))
- boottime.tv_sec = 0;
- }
- struct timeval now;
- if (boottime.tv_sec && -1 != gettimeofday(&now, 0)) {
- struct timeval uptime;
- timersub(&now, &boottime, &uptime);
- NSTimeInterval result = uptime.tv_sec + (uptime.tv_usec / 1E+6);
- return result;
- }
- return 0;
-}
-
-
-namespace WebCore {
-
-static const float scrollVelocityZeroingTimeout = 0.10f;
-static const float rubberbandDirectionLockStretchRatio = 1;
-static const float rubberbandMinimumRequiredDeltaBeforeStretch = 10;
-
-static float elasticDeltaForTimeDelta(float initialPosition, float initialVelocity, float elapsedTime)
-{
- return wkNSElasticDeltaForTimeDelta(initialPosition, initialVelocity, elapsedTime);
-}
-
-static float elasticDeltaForReboundDelta(float delta)
-{
- return wkNSElasticDeltaForReboundDelta(delta);
-}
-
-static float reboundDeltaForElasticDelta(float delta)
-{
- return wkNSReboundDeltaForElasticDelta(delta);
-}
-
-static float scrollWheelMultiplier()
-{
- static float multiplier = -1;
- if (multiplier < 0) {
- multiplier = [[NSUserDefaults standardUserDefaults] floatForKey:@"NSScrollWheelMultiplier"];
- if (multiplier <= 0)
- multiplier = 1;
- }
- return multiplier;
-}
-
-ScrollElasticityController::ScrollElasticityController(ScrollElasticityControllerClient* client)
- : m_client(client)
- , m_inScrollGesture(false)
- , m_momentumScrollInProgress(false)
- , m_ignoreMomentumScrolls(false)
- , m_lastMomentumScrollTimestamp(0)
- , m_startTime(0)
- , m_snapRubberbandTimerIsActive(false)
-{
-}
-
-bool ScrollElasticityController::handleWheelEvent(const PlatformWheelEvent& wheelEvent)
-{
- if (wheelEvent.phase() == PlatformWheelEventPhaseBegan) {
- // First, check if we should rubber-band at all.
- if (m_client->pinnedInDirection(FloatSize(-wheelEvent.deltaX(), 0)) &&
- !shouldRubberBandInHorizontalDirection(wheelEvent))
- return false;
-
- m_inScrollGesture = true;
- m_momentumScrollInProgress = false;
- m_ignoreMomentumScrolls = false;
- m_lastMomentumScrollTimestamp = 0;
- m_momentumVelocity = FloatSize();
-
- IntSize stretchAmount = m_client->stretchAmount();
- m_stretchScrollForce.setWidth(reboundDeltaForElasticDelta(stretchAmount.width()));
- m_stretchScrollForce.setHeight(reboundDeltaForElasticDelta(stretchAmount.height()));
- m_overflowScrollDelta = FloatSize();
-
- stopSnapRubberbandTimer();
-
- return true;
- }
-
- if (wheelEvent.phase() == PlatformWheelEventPhaseEnded) {
- snapRubberBand();
- return true;
- }
-
- bool isMomentumScrollEvent = (wheelEvent.momentumPhase() != PlatformWheelEventPhaseNone);
- if (m_ignoreMomentumScrolls && (isMomentumScrollEvent || m_snapRubberbandTimerIsActive)) {
- if (wheelEvent.momentumPhase() == PlatformWheelEventPhaseEnded) {
- m_ignoreMomentumScrolls = false;
- return true;
- }
- return false;
- }
-
- float deltaX = m_overflowScrollDelta.width();
- float deltaY = m_overflowScrollDelta.height();
-
- // Reset overflow values because we may decide to remove delta at various points and put it into overflow.
- m_overflowScrollDelta = FloatSize();
-
- IntSize stretchAmount = m_client->stretchAmount();
- bool isVerticallyStretched = stretchAmount.height();
- bool isHorizontallyStretched = stretchAmount.width();
-
- float eventCoalescedDeltaX;
- float eventCoalescedDeltaY;
-
- if (isVerticallyStretched || isHorizontallyStretched) {
- eventCoalescedDeltaX = -wheelEvent.unacceleratedScrollingDeltaX();
- eventCoalescedDeltaY = -wheelEvent.unacceleratedScrollingDeltaY();
- } else {
- eventCoalescedDeltaX = -wheelEvent.deltaX();
- eventCoalescedDeltaY = -wheelEvent.deltaY();
- }
-
- deltaX += eventCoalescedDeltaX;
- deltaY += eventCoalescedDeltaY;
-
- // Slightly prefer scrolling vertically by applying the = case to deltaY
- if (fabsf(deltaY) >= fabsf(deltaX))
- deltaX = 0;
- else
- deltaY = 0;
-
- bool shouldStretch = false;
-
- PlatformWheelEventPhase momentumPhase = wheelEvent.momentumPhase();
-
- // If we are starting momentum scrolling then do some setup.
- if (!m_momentumScrollInProgress && (momentumPhase == PlatformWheelEventPhaseBegan || momentumPhase == PlatformWheelEventPhaseChanged))
- m_momentumScrollInProgress = true;
-
- CFTimeInterval timeDelta = wheelEvent.timestamp() - m_lastMomentumScrollTimestamp;
- if (m_inScrollGesture || m_momentumScrollInProgress) {
- if (m_lastMomentumScrollTimestamp && timeDelta > 0 && timeDelta < scrollVelocityZeroingTimeout) {
- m_momentumVelocity.setWidth(eventCoalescedDeltaX / (float)timeDelta);
- m_momentumVelocity.setHeight(eventCoalescedDeltaY / (float)timeDelta);
- m_lastMomentumScrollTimestamp = wheelEvent.timestamp();
- } else {
- m_lastMomentumScrollTimestamp = wheelEvent.timestamp();
- m_momentumVelocity = FloatSize();
- }
-
- if (isVerticallyStretched) {
- if (!isHorizontallyStretched && m_client->pinnedInDirection(FloatSize(deltaX, 0))) {
- // Stretching only in the vertical.
- if (deltaY != 0 && (fabsf(deltaX / deltaY) < rubberbandDirectionLockStretchRatio))
- deltaX = 0;
- else if (fabsf(deltaX) < rubberbandMinimumRequiredDeltaBeforeStretch) {
- m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
- deltaX = 0;
- } else
- m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
- }
- } else if (isHorizontallyStretched) {
- // Stretching only in the horizontal.
- if (m_client->pinnedInDirection(FloatSize(0, deltaY))) {
- if (deltaX != 0 && (fabsf(deltaY / deltaX) < rubberbandDirectionLockStretchRatio))
- deltaY = 0;
- else if (fabsf(deltaY) < rubberbandMinimumRequiredDeltaBeforeStretch) {
- m_overflowScrollDelta.setHeight(m_overflowScrollDelta.height() + deltaY);
- deltaY = 0;
- } else
- m_overflowScrollDelta.setHeight(m_overflowScrollDelta.height() + deltaY);
- }
- } else {
- // Not stretching at all yet.
- if (m_client->pinnedInDirection(FloatSize(deltaX, deltaY))) {
- if (fabsf(deltaY) >= fabsf(deltaX)) {
- if (fabsf(deltaX) < rubberbandMinimumRequiredDeltaBeforeStretch) {
- m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
- deltaX = 0;
- } else
- m_overflowScrollDelta.setWidth(m_overflowScrollDelta.width() + deltaX);
- }
- shouldStretch = true;
- }
- }
- }
-
- if (deltaX != 0 || deltaY != 0) {
- if (!(shouldStretch || isVerticallyStretched || isHorizontallyStretched)) {
- if (deltaY != 0) {
- deltaY *= scrollWheelMultiplier();
- m_client->immediateScrollBy(FloatSize(0, deltaY));
- }
- if (deltaX != 0) {
- deltaX *= scrollWheelMultiplier();
- m_client->immediateScrollBy(FloatSize(deltaX, 0));
- }
- } else {
- if (!m_client->allowsHorizontalStretching(wheelEvent)) {
- deltaX = 0;
- eventCoalescedDeltaX = 0;
- } else if ((deltaX != 0) && !isHorizontallyStretched && !m_client->pinnedInDirection(FloatSize(deltaX, 0))) {
- deltaX *= scrollWheelMultiplier();
-
- m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(deltaX, 0));
- deltaX = 0;
- }
-
- if (!m_client->allowsVerticalStretching(wheelEvent)) {
- deltaY = 0;
- eventCoalescedDeltaY = 0;
- } else if ((deltaY != 0) && !isVerticallyStretched && !m_client->pinnedInDirection(FloatSize(0, deltaY))) {
- deltaY *= scrollWheelMultiplier();
-
- m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(0, deltaY));
- deltaY = 0;
- }
-
- IntSize stretchAmount = m_client->stretchAmount();
-
- if (m_momentumScrollInProgress) {
- if ((m_client->pinnedInDirection(FloatSize(eventCoalescedDeltaX, eventCoalescedDeltaY)) || (fabsf(eventCoalescedDeltaX) + fabsf(eventCoalescedDeltaY) <= 0)) && m_lastMomentumScrollTimestamp) {
- m_ignoreMomentumScrolls = true;
- m_momentumScrollInProgress = false;
- snapRubberBand();
- }
- }
-
- m_stretchScrollForce.setWidth(m_stretchScrollForce.width() + deltaX);
- m_stretchScrollForce.setHeight(m_stretchScrollForce.height() + deltaY);
-
- FloatSize dampedDelta(ceilf(elasticDeltaForReboundDelta(m_stretchScrollForce.width())), ceilf(elasticDeltaForReboundDelta(m_stretchScrollForce.height())));
-
- m_client->immediateScrollByWithoutContentEdgeConstraints(dampedDelta - stretchAmount);
- }
- }
-
- if (m_momentumScrollInProgress && momentumPhase == PlatformWheelEventPhaseEnded) {
- m_momentumScrollInProgress = false;
- m_ignoreMomentumScrolls = false;
- m_lastMomentumScrollTimestamp = 0;
- }
-
- return true;
-}
-
-static inline float roundTowardZero(float num)
-{
- return num > 0 ? ceilf(num - 0.5f) : floorf(num + 0.5f);
-}
-
-static inline float roundToDevicePixelTowardZero(float num)
-{
- float roundedNum = roundf(num);
- if (fabs(num - roundedNum) < 0.125)
- num = roundedNum;
-
- return roundTowardZero(num);
-}
-
-void ScrollElasticityController::snapRubberBandTimerFired()
-{
- if (!m_momentumScrollInProgress || m_ignoreMomentumScrolls) {
- CFTimeInterval timeDelta = [NSDate timeIntervalSinceReferenceDate] - m_startTime;
-
- if (m_startStretch == FloatSize()) {
- m_startStretch = m_client->stretchAmount();
- if (m_startStretch == FloatSize()) {
- stopSnapRubberbandTimer();
-
- m_stretchScrollForce = FloatSize();
- m_startTime = 0;
- m_startStretch = FloatSize();
- m_origOrigin = FloatPoint();
- m_origVelocity = FloatSize();
- return;
- }
-
- m_origOrigin = m_client->absoluteScrollPosition() - m_startStretch;
- m_origVelocity = m_momentumVelocity;
-
- // Just like normal scrolling, prefer vertical rubberbanding
- if (fabsf(m_origVelocity.height()) >= fabsf(m_origVelocity.width()))
- m_origVelocity.setWidth(0);
-
- // Don't rubber-band horizontally if it's not possible to scroll horizontally
- if (!m_client->canScrollHorizontally())
- m_origVelocity.setWidth(0);
-
- // Don't rubber-band vertically if it's not possible to scroll vertically
- if (!m_client->canScrollVertically())
- m_origVelocity.setHeight(0);
- }
-
- FloatPoint delta(roundToDevicePixelTowardZero(elasticDeltaForTimeDelta(m_startStretch.width(), -m_origVelocity.width(), (float)timeDelta)),
- roundToDevicePixelTowardZero(elasticDeltaForTimeDelta(m_startStretch.height(), -m_origVelocity.height(), (float)timeDelta)));
-
- if (fabs(delta.x()) >= 1 || fabs(delta.y()) >= 1) {
- m_client->immediateScrollByWithoutContentEdgeConstraints(FloatSize(delta.x(), delta.y()) - m_client->stretchAmount());
-
- FloatSize newStretch = m_client->stretchAmount();
-
- m_stretchScrollForce.setWidth(reboundDeltaForElasticDelta(newStretch.width()));
- m_stretchScrollForce.setHeight(reboundDeltaForElasticDelta(newStretch.height()));
- } else {
- m_client->adjustScrollPositionToBoundsIfNecessary();
-
- stopSnapRubberbandTimer();
- m_stretchScrollForce = FloatSize();
- m_startTime = 0;
- m_startStretch = FloatSize();
- m_origOrigin = FloatPoint();
- m_origVelocity = FloatSize();
- }
- } else {
- m_startTime = [NSDate timeIntervalSinceReferenceDate];
- m_startStretch = FloatSize();
- }
-}
-
-bool ScrollElasticityController::isRubberBandInProgress() const
-{
- if (!m_inScrollGesture && !m_momentumScrollInProgress && !m_snapRubberbandTimerIsActive)
- return false;
-
- return !m_client->stretchAmount().isZero();
-}
-
-void ScrollElasticityController::stopSnapRubberbandTimer()
-{
- m_client->stopSnapRubberbandTimer();
- m_snapRubberbandTimerIsActive = false;
-}
-
-void ScrollElasticityController::snapRubberBand()
-{
- CFTimeInterval timeDelta = systemUptime() - m_lastMomentumScrollTimestamp;
- if (m_lastMomentumScrollTimestamp && timeDelta >= scrollVelocityZeroingTimeout)
- m_momentumVelocity = FloatSize();
-
- m_inScrollGesture = false;
-
- if (m_snapRubberbandTimerIsActive)
- return;
-
- m_startTime = [NSDate timeIntervalSinceReferenceDate];
- m_startStretch = FloatSize();
- m_origOrigin = FloatPoint();
- m_origVelocity = FloatSize();
-
- m_client->startSnapRubberbandTimer();
- m_snapRubberbandTimerIsActive = true;
-}
-
-bool ScrollElasticityController::shouldRubberBandInHorizontalDirection(const PlatformWheelEvent& wheelEvent)
-{
- if (wheelEvent.deltaX() > 0)
- return m_client->shouldRubberBandInDirection(ScrollLeft);
- if (wheelEvent.deltaX() < 0)
- return m_client->shouldRubberBandInDirection(ScrollRight);
-
- return true;
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(RUBBER_BANDING)
</del></span></pre>
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