Fix table background painting

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

Index: third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp b/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
index 89b925af6f41a1551f1d609cd14bd23c85fada16..5adff817e7ce80649c206c740e89e696dbf97beb 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
@@ -1283,8 +1283,9 @@ LayoutRect LayoutTableSection::logicalRectForWritingModeAndDirection(const Layou
     if (!style()->isHorizontalWritingMode())
         tableAlignedRect = tableAlignedRect.transposedRect();
 
+
     const Vector<int>& columnPos = table()->effectiveColumnPositions();
-    // FIXME: The table's direction should determine our row's direction, not the section's (see bug 96691).
+    // FIXME: The table's direction should determine our row's direction, not the section's (see https://bugs.webkit.org/show_bug.cgi?id=96691).
     if (!style()->isLeftToRightDirection())
         tableAlignedRect.setX(columnPos[columnPos.size() - 1] - tableAlignedRect.maxX());
 
@@ -1647,4 +1648,53 @@ void LayoutTableSection::setLogicalPositionForCell(LayoutTableCell* cell, unsign
     cell->setLogicalLocation(cellLocation);
 }
 
+LayoutRect LayoutTableSection::getCellPosition(unsigned row, unsigned effectiveColumn) const
+{
+    LayoutTable * table = this->table();
+
+    LayoutUnit left = LayoutUnit(table->effectiveColumnPositions()[effectiveColumn]);
+    LayoutUnit top = LayoutUnit(m_rowPos[row]);
+    LayoutUnit right = LayoutUnit(table->effectiveColumnPositions()[effectiveColumn+1]);
+    LayoutUnit bottom = LayoutUnit(m_rowPos[row+1]);
+    left += LayoutUnit(table->hBorderSpacing());
+
+    return LayoutRect(left, top, right - left, bottom - top);
+}
+
+LayoutRect LayoutTableSection::getCellPhysicalPosition(unsigned row, unsigned effectiveColumn) const
+{
+    return transformLogicalToPhysicalPosition(getCellPosition(row, effectiveColumn));
+}
+
+LayoutRect LayoutTableSection::transformLogicalToPhysicalPosition(const LayoutRect& position) const
+{
+    WritingMode writingMode = style()->getWritingMode();
+    bool isLTR = style()->isLeftToRightDirection();
+
+    LayoutRect transformedPosition = position;
+    if (blink::isHorizontalWritingMode(writingMode)) {
+        if (!isLTR)
+            transformedPosition.setX(size().width() - transformedPosition.maxX());
+    } else {
+        transformedPosition = transformedPosition.transposedRect();
+        if (!isLTR)
+            transformedPosition.setY(size().height() - transformedPosition.maxY());
+        if (blink::isFlippedBlocksWritingMode(writingMode))
+            transformedPosition.setX(size().width() - transformedPosition.maxX());
+    }
+    return transformedPosition;
+}
+
+LayoutRect LayoutTableSection::positionByCellSpan() const
+{
+    LayoutRect position;
+    LayoutTableRow* firstRow = this->firstRow();
+    LayoutTableRow* lastRow = this->lastRow();
+    if (firstRow && lastRow) {
+        position = firstRow->positionByCellSpan();
+        position.unite(lastRow->positionByCellSpan());
+    }
+    return position;
+}
+
 } // namespace blink