Separate backgroundObscurationStatus and hasBoxDecorationBackground

third_party/WebKit/Source/core/style/ComputedStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 2299 matching lines @@
         // out along the inline axis, just like for regular multicol. Otherwise, we need to lay out
         // along the block axis.
         if (isOverflowPaged())
             return (overflowY() == OverflowPagedX) == isHorizontalWritingMode();
         return false;
     }
 
     // Border utility functions.
     bool borderObscuresBackground() const;
     void getBorderEdgeInfo(BorderEdge edges[], bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true) const;
+
     bool hasBoxDecorations() const
     {
         return hasBorderDecoration()
             || hasBorderRadius()
             || hasOutline()
             || hasAppearance()
             || boxShadow()
             || hasFilterInducingProperty()
             || hasBackdropFilter()
             || resize() != RESIZE_NONE;
     }
 
+    // "Box decoration background" includes all box decorations and backgrounds
+    // that are painted as the background of the object. It includes borders,
+    // box-shadows, background-color and background-image, etc.
+    bool hasBoxDecorationBackground() const
+    {
+        return hasBackground() || hasBorderDecoration() || hasAppearance() || boxShadow();
+    }
+
     // Background utility functions.
     FillLayer& accessBackgroundLayers() { return m_background.access()->m_background; }
     const FillLayer& backgroundLayers() const { return m_background->background(); }
     void adjustBackgroundLayers()
     {
         if (backgroundLayers().next()) {
             accessBackgroundLayers().cullEmptyLayers();
             accessBackgroundLayers().fillUnsetProperties();
         }
     }
@@ skipping 212 matching lines @@
 }
 
 inline bool ComputedStyle::hasPseudoElementStyle() const
 {
     return m_nonInheritedData.m_pseudoBits & ElementPseudoIdMask;
 }
 
 } // namespace blink
 
 #endif // ComputedStyle_h