(WIP) Invalidation during painting (for synchronized painting)

third_party/WebKit/Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 549 matching lines @@
     }
 
     void setIsInsideFlowThreadIncludingDescendants(bool);
 
     bool isInsideFlowThread() const { return m_bitfields.isInsideFlowThread(); }
     void setIsInsideFlowThread(bool insideFlowThread) { m_bitfields.setIsInsideFlowThread(insideFlowThread); }
 
     // FIXME: Until all SVG layoutObjects can be subclasses of LayoutSVGModelObject we have
     // to add SVG layoutObject methods to LayoutObject with an ASSERT_NOT_REACHED() default implementation.
     bool isSVG() const { return isOfType(LayoutObjectSVG); }
+    bool isSVGModelObject() const { return isOfType(LayoutObjectSVGModelObject); }
     bool isSVGRoot() const { return isOfType(LayoutObjectSVGRoot); }
     bool isSVGContainer() const { return isOfType(LayoutObjectSVGContainer); }
     bool isSVGTransformableContainer() const { return isOfType(LayoutObjectSVGTransformableContainer); }
     bool isSVGViewportContainer() const { return isOfType(LayoutObjectSVGViewportContainer); }
     bool isSVGGradientStop() const { return isOfType(LayoutObjectSVGGradientStop); }
     bool isSVGHiddenContainer() const { return isOfType(LayoutObjectSVGHiddenContainer); }
     bool isSVGShape() const { return isOfType(LayoutObjectSVGShape); }
     bool isSVGText() const { return isOfType(LayoutObjectSVGText); }
     bool isSVGTextPath() const { return isOfType(LayoutObjectSVGTextPath); }
     bool isSVGInline() const { return isOfType(LayoutObjectSVGInline); }
@@ skipping 685 matching lines @@
 
     // Called when the previous paint invalidation rect(s) is no longer valid.
     virtual void clearPreviousPaintInvalidationRects();
 
     // Only adjusts if the paint invalidation container is not a composited scroller.
     void adjustPreviousPaintInvalidationForScrollIfNeeded(const DoubleSize& scrollDelta);
 
     // The previous position of the top-left corner of the object in its previous paint backing.
     const LayoutPoint& previousPositionFromPaintInvalidationBacking() const
     {
-        ASSERT(!RuntimeEnabledFeatures::slimmingPaintOffsetCachingEnabled());
+        ASSERT(!RuntimeEnabledFeatures::slimmingPaintV2Enabled());
         return m_previousPositionFromPaintInvalidationBacking;
     }
     void setPreviousPositionFromPaintInvalidationBacking(const LayoutPoint& positionFromPaintInvalidationBacking)
     {
-        ASSERT(!RuntimeEnabledFeatures::slimmingPaintOffsetCachingEnabled());
+        ASSERT(!RuntimeEnabledFeatures::slimmingPaintV2Enabled());
         m_previousPositionFromPaintInvalidationBacking = positionFromPaintInvalidationBacking;
     }
 
     bool paintOffsetChanged(const LayoutPoint& newPaintOffset) const
     {
-        ASSERT(RuntimeEnabledFeatures::slimmingPaintOffsetCachingEnabled());
-        return m_previousPositionFromPaintInvalidationBacking != uninitializedPaintOffset() && m_previousPositionFromPaintInvalidationBacking != newPaintOffset;
+        ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled());
+        return m_previousPositionFromPaintInvalidationBacking != newPaintOffset;
     }
     void setPreviousPaintOffset(const LayoutPoint& paintOffset)
     {
-        ASSERT(RuntimeEnabledFeatures::slimmingPaintOffsetCachingEnabled());
+        ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled());
         m_previousPositionFromPaintInvalidationBacking = paintOffset;
     }
 
     PaintInvalidationReason fullPaintInvalidationReason() const { return m_bitfields.fullPaintInvalidationReason(); }
     bool shouldDoFullPaintInvalidation() const { return m_bitfields.fullPaintInvalidationReason() != PaintInvalidationNone; }
     void setShouldDoFullPaintInvalidation(PaintInvalidationReason = PaintInvalidationFull);
     void clearShouldDoFullPaintInvalidation() { m_bitfields.setFullPaintInvalidationReason(PaintInvalidationNone); }
 
     bool shouldInvalidateOverflowForPaint() const { return m_bitfields.shouldInvalidateOverflowForPaint(); }
 
@@ skipping 26 matching lines @@
 
     void invalidateDisplayItemClient(const DisplayItemClient&) const;
     void invalidateDisplayItemClientsIncludingNonCompositingDescendants(const LayoutBoxModelObject* paintInvalidationContainer, PaintInvalidationReason) const;
 
     // Called before anonymousChild.setStyle(). Override to set custom styles for the child.
     virtual void updateAnonymousChildStyle(const LayoutObject& anonymousChild, ComputedStyle& style) const { }
 
     // Painters can use const methods only, except for these explicitly declared methods.
     class MutableForPainting {
     public:
-        void setPreviousPaintOffset(const LayoutPoint& paintOffset) { m_layoutObject.setPreviousPaintOffset(paintOffset); }
+        void invalidatePaintIfNeeded(const PaintInfo& paintInfo, const LayoutPoint& paintOffset) { m_layoutObject.invalidatePaintIfNeededForSlimmingPaintV2(paintInfo, paintOffset); }
 
     private:
         friend class LayoutObject;
         MutableForPainting(const LayoutObject& layoutObject) : m_layoutObject(const_cast<LayoutObject&>(layoutObject)) { }
 
         LayoutObject& m_layoutObject;
     };
     MutableForPainting mutableForPainting() const { return MutableForPainting(*this); }
 
     void setIsScrollAnchorObject() { m_bitfields.setIsScrollAnchorObject(true); }
@@ skipping 45 matching lines @@
         LayoutObjectTableCell,
         LayoutObjectTableRow,
         LayoutObjectTableSection,
         LayoutObjectTextArea,
         LayoutObjectTextControl,
         LayoutObjectTextField,
         LayoutObjectVideo,
         LayoutObjectWidget,
 
         LayoutObjectSVG, /* Keep by itself? */
+        LayoutObjectSVGModelObject,
         LayoutObjectSVGRoot,
         LayoutObjectSVGContainer,
         LayoutObjectSVGTransformableContainer,
         LayoutObjectSVGViewportContainer,
         LayoutObjectSVGHiddenContainer,
         LayoutObjectSVGGradientStop,
         LayoutObjectSVGShape,
         LayoutObjectSVGText,
         LayoutObjectSVGTextPath,
         LayoutObjectSVGInline,
@@ skipping 86 matching lines @@
     // relationship.
     //
     // The function is overridden to handle special children
     // (e.g. percentage height descendants or reflections).
     virtual void invalidatePaintOfSubtreesIfNeeded(PaintInvalidationState& childPaintInvalidationState);
 
     // This function generates the invalidation for this object only.
     // It doesn't recurse into other object, as this is handled
     // by invalidatePaintOfSubtreesIfNeeded.
     virtual PaintInvalidationReason invalidatePaintIfNeeded(PaintInvalidationState&, const LayoutBoxModelObject& paintInvalidationContainer);
+    void invalidatePaintIfNeededForSlimmingPaintV2(const PaintInfo&, const LayoutPoint& paintOffset);
 
     // When this object is invalidated for paint, this method is called to invalidate any DisplayItemClients
     // owned by this object, including the object itself, LayoutText/LayoutInline line boxes, etc.,
     // not including children which will be invalidated normally during invalidateTreeIfNeeded() and
     // parts which are invalidated separately (e.g. scrollbars).
     // The caller should ensure the enclosing layer has been setNeedsRepaint before calling this function.
     virtual void invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason) const;
 
     // Sets enclosing layer needsRepaint, then calls invalidateDisplayItemClients().
     // Should use this version when PaintInvalidationState is available.
@@ skipping 76 matching lines @@
     void checkBlockPositionedObjectsNeedLayout();
 #endif
 
     bool isTextOrSVGChild() const { return isText() || (isSVG() && !isSVGRoot()); }
 
     static bool isAllowedToModifyLayoutTreeStructure(Document&);
 
     // The passed rect is mutated into the coordinate space of the paint invalidation container.
     const LayoutBoxModelObject* invalidatePaintRectangleInternal(const LayoutRect&) const;
 
-    static LayoutPoint uninitializedPaintOffset() { return LayoutPoint(LayoutUnit::max(), LayoutUnit::max()); }
-
     RefPtr<ComputedStyle> m_style;
 
     // Oilpan: This untraced pointer to the owning Node is considered safe.
     RawPtrWillBeUntracedMember<Node> m_node;
 
     LayoutObject* m_parent;
     LayoutObject* m_previous;
     LayoutObject* m_next;
 
 #if ENABLE(ASSERT)
@@ skipping 265 matching lines @@
     // Store state between styleWillChange and styleDidChange
     static bool s_affectsParentBlock;
 
     // This stores the paint invalidation rect from the previous frame. This rect does *not* account for composited scrolling. See
     // adjustInvalidationRectForCompositedScrolling().
     LayoutRect m_previousPaintInvalidationRect;
 
     // This stores the position in the paint invalidation backing's coordinate.
     // It is used to detect layoutObject shifts that forces a full invalidation.
     // This point does *not* account for composited scrolling. See adjustInvalidationRectForCompositedScrolling().
-    // For slimmingPaintOffsetCaching, this stores the previous paint offset.
-    // TODO(wangxianzhu): Rename this to m_previousPaintOffset when we enable slimmingPaintOffsetCaching.
+    // For slimmingPaintV2, this stores the previous paint offset.
+    // TODO(wangxianzhu): Rename this to m_previousPaintOffset when we enable slimmingPaintV2.
     LayoutPoint m_previousPositionFromPaintInvalidationBacking;
 };
 
 // FIXME: remove this once the layout object lifecycle ASSERTS are no longer hit.
 class DeprecatedDisableModifyLayoutTreeStructureAsserts {
     STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(DeprecatedDisableModifyLayoutTreeStructureAsserts);
 public:
     DeprecatedDisableModifyLayoutTreeStructureAsserts();
 
@@ skipping 219 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h