Separate repaint and layout requirements of StyleDifference (Step 1)

Source/core/rendering/style/RenderStyle.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 23 matching lines @@
 #include "core/rendering/style/DataRef.h"
 #include "core/rendering/style/LineClampValue.h"
 #include "core/rendering/style/NinePieceImage.h"
 #include "core/rendering/style/OutlineValue.h"
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "core/rendering/style/SVGRenderStyle.h"
 #include "core/rendering/style/ShapeValue.h"
 #include "core/rendering/style/StyleBackgroundData.h"
 #include "core/rendering/style/StyleBoxData.h"
 #include "core/rendering/style/StyleDeprecatedFlexibleBoxData.h"
+#include "core/rendering/style/StyleDifference.h"
 #include "core/rendering/style/StyleFilterData.h"
 #include "core/rendering/style/StyleFlexibleBoxData.h"
 #include "core/rendering/style/StyleGridData.h"
 #include "core/rendering/style/StyleGridItemData.h"
 #include "core/rendering/style/StyleMarqueeData.h"
 #include "core/rendering/style/StyleMultiColData.h"
 #include "core/rendering/style/StyleRareInheritedData.h"
 #include "core/rendering/style/StyleRareNonInheritedData.h"
 #include "core/rendering/style/StyleReflection.h"
 #include "core/rendering/style/StyleSurroundData.h"
@@ skipping 299 matching lines @@
 public:
     static PassRefPtr<RenderStyle> create();
     static PassRefPtr<RenderStyle> createDefaultStyle();
     static PassRefPtr<RenderStyle> createAnonymousStyleWithDisplay(const RenderStyle* parentStyle, EDisplay);
     static PassRefPtr<RenderStyle> clone(const RenderStyle*);
 
     // Computes how the style change should be propagated down the tree.
     static StyleRecalcChange stylePropagationDiff(const RenderStyle* oldStyle, const RenderStyle* newStyle);
 
     // Computes how much visual invalidation the style change causes: layout, repaint or recomposite.
-    StyleDifference visualInvalidationDiff(const RenderStyle&, unsigned& changedContextSensitiveProperties) const;
+    StyleDifference visualInvalidationDiff(const RenderStyle&) const;
 
     enum IsAtShadowBoundary {
         AtShadowBoundary,
         NotAtShadowBoundary,
     };
 
     void inheritFrom(const RenderStyle* inheritParent, IsAtShadowBoundary = NotAtShadowBoundary);
     void copyNonInheritedFrom(const RenderStyle*);
 
     PseudoId styleType() const { return static_cast<PseudoId>(noninherited_flags._styleType); }
@@ skipping 1397 matching lines @@
     StyleColor visitedLinkTextFillColor() const { return rareInheritedData->visitedLinkTextFillColor(); }
     StyleColor visitedLinkTextStrokeColor() const { return rareInheritedData->visitedLinkTextStrokeColor(); }
 
     Color colorIncludingFallback(int colorProperty, bool visitedLink) const;
 
     Color stopColor() const { return svgStyle()->stopColor(); }
     Color floodColor() const { return svgStyle()->floodColor(); }
     Color lightingColor() const { return svgStyle()->lightingColor(); }
 
     void appendContent(PassOwnPtr<ContentData>);
-    StyleDifference repaintOnlyDiff(const RenderStyle& other, unsigned& changedContextSensitiveProperties) const;
+
+    bool diffNeedsLayoutAndRepaintLayer(const RenderStyle& other) const;
+    bool diffNeedsLayoutAndRepaintSelf(const RenderStyle& other) const;
+    bool diffNeedsLayoutOnly(const RenderStyle& other) const;
+    bool diffNeedsRepaintLayerOnly(const RenderStyle& other) const;
+    bool diffNeedsRepaintOnly(const RenderStyle& other) const;
+    bool diffNeedsRecompositeLayerOnly(const RenderStyle& other) const;
+    void addContextSensitiveDiffFlags(const RenderStyle& other, StyleDifference&) const;
 };
 
 inline int adjustForAbsoluteZoom(int value, float zoomFactor)
 {
     if (zoomFactor == 1)
         return value;
     // Needed because computeLengthInt truncates (rather than rounds) when scaling up.
     if (zoomFactor > 1) {
         if (value < 0)
             value--;
@@ skipping 76 matching lines @@
 inline bool RenderStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags._pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 float calcBorderRadiiConstraintScaleFor(const FloatRect&, const FloatRoundedRect::Radii&);
 
 } // namespace WebCore
 
 #endif // RenderStyle_h