Implement closed shadow adjustment for Element.offsetParent

third_party/WebKit/Source/core/layout/LayoutInline.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 668 matching lines @@
 {
     AbsoluteQuadsGeneratorContext context(this, quads);
     generateLineBoxRects(context);
     if (quads.isEmpty())
         context(FloatRect());
 
     if (const LayoutBoxModelObject* continuation = this->continuation())
         continuation->absoluteQuads(quads);
 }
 
-LayoutUnit LayoutInline::offsetLeft() const
+LayoutUnit LayoutInline::offsetLeft(const Element* parent) const
 {
     LayoutPoint topLeft;
     if (InlineBox* firstBox = firstLineBoxIncludingCulling()) {
         topLeft = firstBox->topLeft();
     }
-    return adjustedPositionRelativeToOffsetParent(topLeft).x();
+    return adjustedPositionRelativeTo(topLeft, parent).x();
 }
 
-LayoutUnit LayoutInline::offsetTop() const
+LayoutUnit LayoutInline::offsetTop(const Element* parent) const
 {
     LayoutPoint topLeft;
     if (InlineBox* firstBox = firstLineBoxIncludingCulling()) {
         topLeft = firstBox->topLeft();
     }
-    return adjustedPositionRelativeToOffsetParent(topLeft).y();
+    return adjustedPositionRelativeTo(topLeft, parent).y();
 }
 
 static LayoutUnit computeMargin(const LayoutInline* layoutObject, const Length& margin)
 {
     if (margin.isFixed())
         return LayoutUnit(margin.value());
     if (margin.hasPercent())
         return minimumValueForLength(margin, std::max(LayoutUnit(), layoutObject->containingBlock()->availableLogicalWidth()));
     return LayoutUnit();
 }
@@ skipping 640 matching lines @@
 
 void LayoutInline::invalidateDisplayItemClients(PaintInvalidationReason invalidationReason) const
 {
     LayoutBoxModelObject::invalidateDisplayItemClients(invalidationReason);
 
     for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
         invalidateDisplayItemClient(*box, invalidationReason);
 }
 
 } // namespace blink