Paint backgrounds of a table section/row in one display item

third_party/WebKit/Source/core/paint/TableCellPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/TableCellPainter.h"
 
 #include "core/layout/LayoutTableCell.h"
 #include "core/paint/BlockPainter.h"
 #include "core/paint/BoxPainter.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
@@ skipping 159 matching lines @@
         graphicsContext, borderRect.maxX() - rightWidth, borderRect.y(),
         borderRect.maxX(), borderRect.maxY(), BSRight,
         rightBorderValue.color().resolve(cellColor),
         collapsedBorderStyle(rightBorderValue.style()), 0, 0, true);
   }
 }
 
 void TableCellPainter::paintContainerBackgroundBehindCell(
     const PaintInfo& paintInfo,
     const LayoutPoint& paintOffset,
-    const LayoutObject& backgroundObject,
-    DisplayItem::Type type) {
+    const LayoutObject& backgroundObject) {
   DCHECK(backgroundObject != m_layoutTableCell);
 
   if (m_layoutTableCell.style()->visibility() != EVisibility::kVisible)
     return;
 
-  LayoutPoint adjustedPaintOffset = paintOffset + m_layoutTableCell.location();
-  if (!BlockPainter(m_layoutTableCell)
-           .intersectsPaintRect(paintInfo, adjustedPaintOffset))
-    return;
-
   LayoutTable* table = m_layoutTableCell.table();
   if (!table->collapseBorders() &&
       m_layoutTableCell.style()->emptyCells() == EEmptyCells::kHide &&
       !m_layoutTableCell.firstChild())
     return;
 
-  const DisplayItemClient& client =
-      m_layoutTableCell.backgroundDisplayItemClient();
-  if (DrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, client,
-                                                  type))
-    return;
-
-  LayoutRect paintRect =
-      paintRectNotIncludingVisualOverflow(adjustedPaintOffset);
-  DrawingRecorder recorder(paintInfo.context, client, type,
-                           FloatRect(paintRect));
+  LayoutRect paintRect = paintRectNotIncludingVisualOverflow(
+      paintOffset + m_layoutTableCell.location());
   paintBackground(paintInfo, paintRect, backgroundObject);
 }
 
 void TableCellPainter::paintBackground(const PaintInfo& paintInfo,
                                        const LayoutRect& paintRect,
                                        const LayoutObject& backgroundObject) {
   if (m_layoutTableCell.backgroundStolenForBeingBody())
     return;
 
   Color c = backgroundObject.resolveColor(CSSPropertyBackgroundColor);
@@ skipping 79 matching lines @@
   BoxPainter(m_layoutTableCell).paintMaskImages(paintInfo, paintRect);
 }
 
 LayoutRect TableCellPainter::paintRectNotIncludingVisualOverflow(
     const LayoutPoint& paintOffset) {
   return LayoutRect(paintOffset,
                     LayoutSize(m_layoutTableCell.pixelSnappedSize()));
 }
 
 }  // namespace blink