Merge 105768 - Incorrect positioning of floating pseudo-elements in table captions

Source/WebCore/rendering/RenderTable.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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 248 matching lines @@
     setMarginStart(0);
     setMarginEnd(0);
     if (!hasPerpendicularContainingBlock)
         computeInlineDirectionMargins(cb, availableLogicalWidth, logicalWidth());
     else {
         setMarginStart(style()->marginStart().calcMinValue(availableLogicalWidth));
         setMarginEnd(style()->marginEnd().calcMinValue(availableLogicalWidth));
     }
 }
 
-void RenderTable::adjustLogicalHeightForCaption(RenderBlock* caption)
+void RenderTable::layoutCaption(RenderTableCaption* caption)
 {
     IntRect captionRect(caption->x(), caption->y(), caption->width(), caption->height());
 
+    if (caption->needsLayout()) {
+        // The margins may not be available but ensure the caption is at least located beneath any previous sibling caption
+        // so that it does not mistakenly think any floats in the previous caption intrude into it.
+        caption->setLogicalLocation(IntPoint(caption->marginStart(), caption->marginBefore() + logicalHeight()));
+        // If RenderTableCaption ever gets a layout() function, use it here.
+        caption->layoutIfNeeded();
+    }
+    // Apply the margins to the location now that they are definitely available from layout
     caption->setLogicalLocation(IntPoint(caption->marginStart(), caption->marginBefore() + logicalHeight()));
+
     if (!selfNeedsLayout() && caption->checkForRepaintDuringLayout())
         caption->repaintDuringLayoutIfMoved(captionRect);
 
     setLogicalHeight(logicalHeight() + caption->logicalHeight() + caption->marginBefore() + caption->marginAfter());
 }
 
 void RenderTable::layout()
 {
     ASSERT(needsLayout());
 
@@ skipping 40 matching lines @@
             totalSectionLogicalHeight += section->calcRowLogicalHeight();
             if (collapsing)
                 section->recalcOuterBorder();
             ASSERT(!section->needsLayout());
         } else if (child->isTableCol()) {
             child->layoutIfNeeded();
             ASSERT(!child->needsLayout());
         }
     }
 
-    // Only lay out one caption, since it's the only one we're going to end up painting.
-    for (unsigned i = 0; i < m_captions.size(); i++)
-        m_captions[i]->layoutIfNeeded();
-
     // If any table section moved vertically, we will just repaint everything from that
     // section down (it is quite unlikely that any of the following sections
     // did not shift).
     bool sectionMoved = false;
     LayoutUnit movedSectionLogicalTop = 0;
 
     // FIXME: Collapse caption margin.
     if (!m_captions.isEmpty()) {
         for (unsigned i = 0; i < m_captions.size(); i++) {
             if (m_captions[i]->style()->captionSide() == CAPBOTTOM)
                 continue;
-            adjustLogicalHeightForCaption(m_captions[i]);
+            layoutCaption(m_captions[i]);
         }
         if (logicalHeight() != oldTableLogicalTop) {
             sectionMoved = true;
             movedSectionLogicalTop = min(logicalHeight(), oldTableLogicalTop);
         }
     }
 
     LayoutUnit borderAndPaddingBefore = borderBefore() + (collapsing ? 0 : paddingBefore());
     LayoutUnit borderAndPaddingAfter = borderAfter() + (collapsing ? 0 : paddingAfter());
 
@@ skipping 39 matching lines @@
 
         setLogicalHeight(logicalHeight() + section->logicalHeight());
         section = sectionBelow(section);
     }
 
     setLogicalHeight(logicalHeight() + borderAndPaddingAfter);
 
     for (unsigned i = 0; i < m_captions.size(); i++) {
         if (m_captions[i]->style()->captionSide() != CAPBOTTOM)
             continue;
-        adjustLogicalHeightForCaption(m_captions[i]);
+        layoutCaption(m_captions[i]);
     }
 
     if (isPositioned())
         computeLogicalHeight();
 
     // table can be containing block of positioned elements.
     // FIXME: Only pass true if width or height changed.
     layoutPositionedObjects(true);
 
     updateLayerTransform();
@@ skipping 809 matching lines @@
     if (visibleToHitTesting() && (action == HitTestBlockBackground || action == HitTestChildBlockBackground) && boundsRect.intersects(result.rectForPoint(pointInContainer))) {
         updateHitTestResult(result, flipForWritingMode(pointInContainer - toLayoutSize(adjustedLocation)));
         if (!result.addNodeToRectBasedTestResult(node(), pointInContainer, boundsRect))
             return true;
     }
 
     return false;
 }
 
 }