Support edge-inclusive intersections in mapToVisibleRectInAncestorSpace

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

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (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
@@ skipping 339 matching lines @@
     }
     if (bottom) {
         if (LayoutTableCell* below = table()->cellBelow(this)) {
             left = std::max(left, below->borderHalfLeft(true));
             right = std::max(right, below->borderHalfRight(true));
         }
     }
     LayoutPoint location(std::max(LayoutUnit(left), -visualOverflowRect().x()), std::max(LayoutUnit(top), -visualOverflowRect().y()));
     LayoutRect r(-location.x(), -location.y(), location.x() + std::max(size().width() + right, visualOverflowRect().maxX()), location.y() + std::max(size().height() + bottom, visualOverflowRect().maxY()));
 
-    mapToVisibleRectInAncestorSpace(paintInvalidationContainer, r, paintInvalidationState);
+    mapToVisibleRectInAncestorSpace(paintInvalidationContainer, r, paintInvalidationState, false);
     return r;
 }
 
-void LayoutTableCell::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& r, const PaintInvalidationState* paintInvalidationState) const
+bool LayoutTableCell::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& r, const PaintInvalidationState* paintInvalidationState, bool edgeInclusive) const
 {
     if (ancestor == this)
-        return;
+        return true;
     r.setY(r.y());
     if ((!paintInvalidationState || !paintInvalidationState->canMapToAncestor(ancestor)) && parent())
         r.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in.
-    LayoutBlockFlow::mapToVisibleRectInAncestorSpace(ancestor, r, paintInvalidationState);
+    return LayoutBlockFlow::mapToVisibleRectInAncestorSpace(ancestor, r, paintInvalidationState, edgeInclusive);
 }
 
 int LayoutTableCell::cellBaselinePosition() const
 {
     // <http://www.w3.org/TR/2007/CR-CSS21-20070719/tables.html#height-layout>: The baseline of a cell is the baseline of
     // the first in-flow line box in the cell, or the first in-flow table-row in the cell, whichever comes first. If there
     // is no such line box or table-row, the baseline is the bottom of content edge of the cell box.
     int firstLineBaseline = firstLineBoxBaseline();
     if (firstLineBaseline != -1)
         return firstLineBaseline;
@@ skipping 636 matching lines @@
 bool LayoutTableCell::backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const
 {
     // If this object has layer, the area of collapsed borders should be transparent
     // to expose the collapsed borders painted on the underlying layer.
     if (hasLayer() && table()->collapseBorders())
         return false;
     return LayoutBlockFlow::backgroundIsKnownToBeOpaqueInRect(localRect);
 }
 
 } // namespace blink