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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/169592">169592</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2014-06-04 13:25:11 -0700 (Wed, 04 Jun 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/168763">r168763</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari53834branchSourceWebCoreChangeLog">branches/safari-538.34-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreWebCoreexpin">branches/safari-538.34-branch/Source/WebCore/WebCore.exp.in</a></li>
<li><a href="#branchessafari53834branchSourceWebCorepageFrameViewcpp">branches/safari-538.34-branch/Source/WebCore/page/FrameView.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreplatformScrollViewcpp">branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreplatformScrollViewh">branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.h</a></li>
<li><a href="#branchessafari53834branchSourceWebCorerenderingRenderLayercpp">branches/safari-538.34-branch/Source/WebCore/rendering/RenderLayer.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebKit2ChangeLog">branches/safari-538.34-branch/Source/WebKit2/ChangeLog</a></li>
<li><a href="#branchessafari53834branchSourceWebKit2WebProcessWebPageFindControllercpp">branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/FindController.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebKit2WebProcessWebPageWebPagecpp">branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/WebPage.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari53834branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/ChangeLog (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/ChangeLog        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/ChangeLog        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -1,3 +1,45 @@
</span><ins>+2014-06-04  Babak Shafiei  &lt;bshafiei@apple.com&gt;
+
+        Merge r168763.
+
+    2014-05-13  Beth Dakin  &lt;bdakin@apple.com&gt;
+
+            REGRESSION (topContentInset): Searching through Facebook Messenger's chat causes 
+            scrolling in News Feed
+            https://bugs.webkit.org/show_bug.cgi?id=132889
+            -and corresponding-
+            &lt;rdar://problem/16715716&gt;
+
+            Reviewed by Simon Fraser.
+
+            First of all, scrollOffsetRelativeToDocument() was very poorly named. This patch 
+            re-names it to the much more accurate documentScrollOffsetRelativeToViewOrigin(). 
+            Re-naming it makes it clear that ONE call site was not getting the right offset. 
+            That call site does not want to know the document’s position relative to the view 
+            origin, but rather it wants to know the Document’s position relative to the 
+            scrolling origin.
+
+            Export new name.
+            * WebCore.exp.in:
+
+            Use newly re-named documentScrollPositionRelativeToViewOrigin().
+            * page/FrameView.cpp:
+            (WebCore::FrameView::convertToRenderer):
+            * platform/ScrollView.cpp:
+            (WebCore::ScrollView::documentScrollOffsetRelativeToViewOrigin):
+            (WebCore::ScrollView::documentScrollPositionRelativeToViewOrigin):
+            (WebCore::ScrollView::documentScrollOffsetRelativeToScrollableAreaOrigin):
+            (WebCore::ScrollView::rootViewToContents):
+            (WebCore::ScrollView::windowToContents):
+            (WebCore::ScrollView::scrollOffsetRelativeToDocument): Deleted.
+            (WebCore::ScrollView::scrollPositionRelativeToDocument): Deleted.
+            * platform/ScrollView.h:
+
+            THIS is the spot that needs the new function, 
+            documentScrollOffsetRelativeToScrollableAreaOrigin()()
+            * rendering/RenderLayer.cpp:
+            (WebCore::RenderLayer::scrollRectToVisible):
+
</ins><span class="cx"> 2014-05-22  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Merge r169209
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreWebCoreexpin"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/WebCore.exp.in (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/WebCore.exp.in        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/WebCore.exp.in        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -1510,7 +1510,7 @@
</span><span class="cx"> __ZNK7WebCore10ScrollView18contentsToRootViewERKNS_8IntPointE
</span><span class="cx"> __ZNK7WebCore10ScrollView18rootViewToContentsERKNS_8IntPointE
</span><span class="cx"> __ZNK7WebCore10ScrollView23rootViewToTotalContentsERKNS_8IntPointE
</span><del>-__ZNK7WebCore10ScrollView30scrollOffsetRelativeToDocumentEv
</del><ins>+__ZNK7WebCore10ScrollView40documentScrollOffsetRelativeToViewOriginEv
</ins><span class="cx"> __ZNK7WebCore10StorageMap6lengthEv
</span><span class="cx"> __ZNK7WebCore10StorageMap7getItemERKN3WTF6StringE
</span><span class="cx"> __ZNK7WebCore10StorageMap8containsERKN3WTF6StringE
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCorepageFrameViewcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/page/FrameView.cpp (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/page/FrameView.cpp        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/page/FrameView.cpp        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -3868,7 +3868,7 @@
</span><span class="cx">     
</span><span class="cx">     // Convert from FrameView coords into page (&quot;absolute&quot;) coordinates.
</span><span class="cx">     if (!delegatesScrolling())
</span><del>-        rect.moveBy(scrollPositionRelativeToDocument());
</del><ins>+        rect.moveBy(documentScrollPositionRelativeToViewOrigin());
</ins><span class="cx"> 
</span><span class="cx">     // FIXME: we don't have a way to map an absolute rect down to a local quad, so just
</span><span class="cx">     // move the rect for now.
</span><span class="lines">@@ -3892,7 +3892,7 @@
</span><span class="cx"> 
</span><span class="cx">     // Convert from FrameView coords into page (&quot;absolute&quot;) coordinates.
</span><span class="cx">     if (!delegatesScrolling())
</span><del>-        point = point + scrollPositionRelativeToDocument();
</del><ins>+        point = point + documentScrollPositionRelativeToViewOrigin();
</ins><span class="cx"> 
</span><span class="cx">     return roundedIntPoint(renderer-&gt;absoluteToLocal(point, UseTransforms));
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreplatformScrollViewcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.cpp (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.cpp        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.cpp        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -412,18 +412,22 @@
</span><span class="cx">     return newScrollPosition;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-IntSize ScrollView::scrollOffsetRelativeToDocument() const
</del><ins>+IntSize ScrollView::documentScrollOffsetRelativeToViewOrigin() const
</ins><span class="cx"> {
</span><del>-    IntSize scrollOffset = this-&gt;scrollOffset();
-    return IntSize(scrollOffset.width(), scrollOffset.height() - headerHeight() - topContentInset());
</del><ins>+    return scrollOffset() - IntSize(0, headerHeight() + topContentInset());
</ins><span class="cx"> }
</span><span class="cx"> 
</span><del>-IntPoint ScrollView::scrollPositionRelativeToDocument() const
</del><ins>+IntPoint ScrollView::documentScrollPositionRelativeToViewOrigin() const
</ins><span class="cx"> {
</span><span class="cx">     IntPoint scrollPosition = this-&gt;scrollPosition();
</span><span class="cx">     return IntPoint(scrollPosition.x(), scrollPosition.y() - headerHeight() - topContentInset());
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+IntSize ScrollView::documentScrollOffsetRelativeToScrollableAreaOrigin() const
+{
+    return scrollOffset() - IntSize(0, headerHeight());
+}
+
</ins><span class="cx"> int ScrollView::scrollSize(ScrollbarOrientation orientation) const
</span><span class="cx"> {
</span><span class="cx">     // If no scrollbars are present, it does not indicate content is not be scrollable.
</span><span class="lines">@@ -829,7 +833,7 @@
</span><span class="cx">         return convertFromRootView(rootViewPoint);
</span><span class="cx"> 
</span><span class="cx">     IntPoint viewPoint = convertFromRootView(rootViewPoint);
</span><del>-    return viewPoint + scrollOffsetRelativeToDocument();
</del><ins>+    return viewPoint + documentScrollOffsetRelativeToViewOrigin();
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> IntPoint ScrollView::contentsToRootView(const IntPoint&amp; contentsPoint) const
</span><span class="lines">@@ -847,7 +851,7 @@
</span><span class="cx">         return convertFromRootView(rootViewRect);
</span><span class="cx"> 
</span><span class="cx">     IntRect viewRect = convertFromRootView(rootViewRect);
</span><del>-    viewRect.move(scrollOffsetRelativeToDocument());
</del><ins>+    viewRect.move(documentScrollOffsetRelativeToViewOrigin());
</ins><span class="cx">     return viewRect;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -876,7 +880,7 @@
</span><span class="cx">         return convertFromContainingWindow(windowPoint);
</span><span class="cx"> 
</span><span class="cx">     IntPoint viewPoint = convertFromContainingWindow(windowPoint);
</span><del>-    return viewPoint + scrollOffsetRelativeToDocument();
</del><ins>+    return viewPoint + documentScrollOffsetRelativeToViewOrigin();
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> IntPoint ScrollView::contentsToWindow(const IntPoint&amp; contentsPoint) const
</span><span class="lines">@@ -894,7 +898,7 @@
</span><span class="cx">         return convertFromContainingWindow(windowRect);
</span><span class="cx"> 
</span><span class="cx">     IntRect viewRect = convertFromContainingWindow(windowRect);
</span><del>-    viewRect.move(scrollOffsetRelativeToDocument());
</del><ins>+    viewRect.move(documentScrollOffsetRelativeToViewOrigin());
</ins><span class="cx">     return viewRect;
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreplatformScrollViewh"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.h (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.h        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/platform/ScrollView.h        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -241,13 +241,22 @@
</span><span class="cx">     IntPoint actualScrollPosition() const { return unobscuredContentRect().location(); }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><del>-    // scrollOffset() anchors its (0,0) point at the top end of the header if this ScrollableArea
-    // has a header, so it is relative to the totalContentsSize(). scrollOffsetRelativeToDocument()
-    // anchors (0,0) at the top of the Document, which will be beneath any headers, so it is relative
-    // to contentsSize().
-    IntSize scrollOffsetRelativeToDocument() const;
-    IntPoint scrollPositionRelativeToDocument() const;
</del><ins>+    // scrollOffset() anchors its (0,0) point at the ScrollableArea's origin. When the Page has a
+    // header, the header is positioned at (0,0), ABOVE the start of the Document. So when a page with
+    // a header is pinned to the top, the scrollOffset() is (0,0), but the Document is actually at
+    // (0, -headerHeight()). documentScrollOffsetRelativeToScrollableAreaOrigin() will return this
+    // version of the offset, which tracks the top of Document relative to where scrolling was achored.
+    IntSize documentScrollOffsetRelativeToScrollableAreaOrigin() const;
</ins><span class="cx"> 
</span><ins>+    // scrollOffset() anchors its (0,0) point at the ScrollableArea's origin. The top of the scrolling
+    // layer does not represent the top of the view when there is a topContentInset. Additionally, as
+    // detailed above, the origin of the scrolling layer also does not necessarily correspond with the
+    // top of the document anyway, since there could also be header. documentScrollOffsetRelativeToViewOrigin()
+    // will return a version of the current scroll offset which tracks the top of the Document
+    // relative to the very top of the view.
+    IntSize documentScrollOffsetRelativeToViewOrigin() const;
+    IntPoint documentScrollPositionRelativeToViewOrigin() const;
+
</ins><span class="cx">     virtual IntSize overhangAmount() const override;
</span><span class="cx"> 
</span><span class="cx">     void cacheCurrentScrollPosition() { m_cachedScrollPosition = scrollPosition(); }
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCorerenderingRenderLayercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/rendering/RenderLayer.cpp (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/rendering/RenderLayer.cpp        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebCore/rendering/RenderLayer.cpp        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -2403,8 +2403,8 @@
</span><span class="cx"> #if !PLATFORM(IOS)
</span><span class="cx">             LayoutRect viewRect = frameView.visibleContentRect();
</span><span class="cx">             LayoutRect visibleRectRelativeToDocument = viewRect;
</span><del>-            IntSize scrollOffsetRelativeToDocument = frameView.scrollOffsetRelativeToDocument();
-            visibleRectRelativeToDocument.setLocation(IntPoint(scrollOffsetRelativeToDocument.width(), scrollOffsetRelativeToDocument.height()));
</del><ins>+            IntSize documentScrollOffsetRelativeToScrollableAreaOrigin = frameView.documentScrollOffsetRelativeToScrollableAreaOrigin();
+            visibleRectRelativeToDocument.setLocation(IntPoint(documentScrollOffsetRelativeToScrollableAreaOrigin.width(), documentScrollOffsetRelativeToScrollableAreaOrigin.height()));
</ins><span class="cx"> #else
</span><span class="cx">             LayoutRect viewRect = frameView.unobscuredContentRect();
</span><span class="cx">             LayoutRect visibleRectRelativeToDocument = viewRect;
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebKit2/ChangeLog (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebKit2/ChangeLog        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebKit2/ChangeLog        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -1,3 +1,24 @@
</span><ins>+2014-06-04  Babak Shafiei  &lt;bshafiei@apple.com&gt;
+
+        Merge r168763.
+
+    2014-05-13  Beth Dakin  &lt;bdakin@apple.com&gt;
+
+            REGRESSION (topContentInset): Searching through Facebook Messenger's chat causes 
+            scrolling in News Feed
+            https://bugs.webkit.org/show_bug.cgi?id=132889
+            -and corresponding-
+            &lt;rdar://problem/16715716&gt;
+
+            Reviewed by Simon Fraser.
+
+            Re-name scrollOffsetRelativeToDocument() to 
+            documentScrollPositionRelativeToViewOrigin().
+            * WebProcess/WebPage/FindController.cpp:
+            (WebKit::FindController::rectsForTextMatches):
+            * WebProcess/WebPage/WebPage.cpp:
+            (WebKit::WebPage::determinePrimarySnapshottedPlugIn):
+
</ins><span class="cx"> 2014-05-21  Dana Burkart  &lt;dburkart@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Merge r169170.
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebKit2WebProcessWebPageFindControllercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/FindController.cpp (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/FindController.cpp        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/FindController.cpp        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -418,7 +418,7 @@
</span><span class="cx"> 
</span><span class="cx">         IntRect visibleRect = frame-&gt;view()-&gt;visibleContentRect();
</span><span class="cx">         Vector&lt;IntRect&gt; frameRects = document-&gt;markers().renderedRectsForMarkers(DocumentMarker::TextMatch);
</span><del>-        IntPoint frameOffset(-frame-&gt;view()-&gt;scrollOffsetRelativeToDocument().width(), -frame-&gt;view()-&gt;scrollOffsetRelativeToDocument().height());
</del><ins>+        IntPoint frameOffset(-frame-&gt;view()-&gt;documentScrollOffsetRelativeToViewOrigin().width(), -frame-&gt;view()-&gt;documentScrollOffsetRelativeToViewOrigin().height());
</ins><span class="cx">         frameOffset = frame-&gt;view()-&gt;convertToContainingWindow(frameOffset);
</span><span class="cx"> 
</span><span class="cx">         for (Vector&lt;IntRect&gt;::iterator it = frameRects.begin(), end = frameRects.end(); it != end; ++it) {
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebKit2WebProcessWebPageWebPagecpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/WebPage.cpp (169591 => 169592)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/WebPage.cpp        2014-06-04 20:22:16 UTC (rev 169591)
+++ branches/safari-538.34-branch/Source/WebKit2/WebProcess/WebPage/WebPage.cpp        2014-06-04 20:25:11 UTC (rev 169592)
</span><span class="lines">@@ -4401,7 +4401,7 @@
</span><span class="cx">             IntRect plugInRectRelativeToView = plugInImageElement.clientRect();
</span><span class="cx">             if (plugInRectRelativeToView.isEmpty())
</span><span class="cx">                 continue;
</span><del>-            IntSize scrollOffset = mainFrame.view()-&gt;scrollOffsetRelativeToDocument();
</del><ins>+            IntSize scrollOffset = mainFrame.view()-&gt;documentScrollOffsetRelativeToViewOrigin();
</ins><span class="cx">             IntRect plugInRectRelativeToTopDocument(plugInRectRelativeToView.location() + scrollOffset, plugInRectRelativeToView.size());
</span><span class="cx">             if (!plugInRectRelativeToTopDocument.intersects(searchRect))
</span><span class="cx">                 continue;
</span></span></pre>
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