Move all fast-path paint invalidation mapping into PaintInvalidationState

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 77 matching lines @@
 enum MarkingBehavior {
     MarkOnlyThis,
     MarkContainerChain,
 };
 
 enum MapCoordinatesMode {
     IsFixed = 1 << 0,
     UseTransforms = 1 << 1,
     ApplyContainerFlip = 1 << 2,
     TraverseDocumentBoundaries = 1 << 3,
+
+    // Applies to LayoutView::mapLocalToAncestor() and LayoutView::mapToVisibleRectInAncestorSpace()
+    // only, to indicate the input point or rect is in frame coordinates instead of frame contents
+    // coordinates. This disables view clipping and scroll offset adjustment.
+    // TODO(wangxianzhu): Remove this when root-layer-scrolls launches.
+    InputIsInFrameCoordinates = 1 << 4,
 };
 typedef unsigned MapCoordinatesFlags;
 
 enum ScheduleRelayoutBehavior {
     ScheduleRelayout,
     DontScheduleRelayout
 };
 
 const LayoutUnit& caretWidth();
 
@@ skipping 208 matching lines @@
 #endif
         ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout());
     }
 
     void assertSubtreeIsLaidOut() const
     {
         for (const LayoutObject* layoutObject = this; layoutObject; layoutObject = layoutObject->nextInPreOrder())
             layoutObject->assertLaidOut();
     }
 
-    void assertClearedPaintInvalidationState() const
+    void assertClearedPaintInvalidationFlags() const
     {
 #ifndef NDEBUG
         if (paintInvalidationStateIsDirty()) {
             showLayoutTreeForThis();
             ASSERT_NOT_REACHED();
         }
 #endif
     }
 
-    void assertSubtreeClearedPaintInvalidationState() const
+    void assertSubtreeClearedPaintInvalidationFlags() const
     {
         for (const LayoutObject* layoutObject = this; layoutObject; layoutObject = layoutObject->nextInPreOrder())
-            layoutObject->assertClearedPaintInvalidationState();
+            layoutObject->assertClearedPaintInvalidationFlags();
     }
 
 #endif
 
     // Correct version of !layoutObjectHasNoBoxEffectObsolete().
     bool hasBoxEffect() const
     {
         return hasBoxDecorationBackground() || style()->hasVisualOverflowingEffect();
     }
 
@@ skipping 634 matching lines @@
     {
         return ancestorToLocalQuad(nullptr, quad, mode);
     }
 
     // Convert a local quad into the coordinate system of container, taking transforms into account.
     // If the LayoutBoxModelObject ancestor is non-null, the result will be in the space of the ancestor.
     // Otherwise:
     //   If TraverseDocumentBoundaries is specified, the result will be in the space of the local root frame.
     //   Otherwise, the result will be in the space of the containing frame.
     FloatQuad localToAncestorQuad(const FloatQuad&, const LayoutBoxModelObject* ancestor, MapCoordinatesFlags = 0, bool* wasFixed = nullptr) const;
-    FloatPoint localToAncestorPoint(const FloatPoint&, const LayoutBoxModelObject* ancestor, MapCoordinatesFlags = 0, bool* wasFixed = nullptr, const PaintInvalidationState* = nullptr) const;
+    FloatPoint localToAncestorPoint(const FloatPoint&, const LayoutBoxModelObject* ancestor, MapCoordinatesFlags = 0, bool* wasFixed = nullptr) const;
     void localToAncestorRects(Vector<LayoutRect>&, const LayoutBoxModelObject* ancestor, const LayoutPoint& preOffset, const LayoutPoint& postOffset) const;
 
     // Return the transformation matrix to map points from local to the coordinate system of a container, taking transforms into account.
     // Passing null for |ancestor| behaves the same as localToAncestorQuad.
     TransformationMatrix localToAncestorTransform(const LayoutBoxModelObject* ancestor, MapCoordinatesFlags = 0, bool* wasFixed = nullptr) const;
     TransformationMatrix localToAbsoluteTransform(MapCoordinatesFlags mode = 0, bool* wasFixed = nullptr) const
     {
         return localToAncestorTransform(nullptr, mode, wasFixed);
     }
 
@@ skipping 91 matching lines @@
     // is responsible for painting this object. The function crosses
     // frames boundaries so the returned value can be in a
     // different document.
     //
     // This is the container that should be passed to
     // the '*forPaintInvalidation' methods.
     const LayoutBoxModelObject& containerForPaintInvalidation() const;
 
     bool isPaintInvalidationContainer() const;
 
-    LayoutRect computePaintInvalidationRect()
-    {
-        return computePaintInvalidationRect(containerForPaintInvalidation());
-    }
-
-    // Returns the paint invalidation rect for this LayoutObject in the coordinate space of the paint backing (typically a GraphicsLayer) for |paintInvalidationContainer|.
-    LayoutRect computePaintInvalidationRect(const LayoutBoxModelObject& paintInvalidationContainer, const PaintInvalidationState* = nullptr) const;
-
-    // Returns the rect bounds needed to invalidate the paint of this object, in the coordinate space of the layoutObject backing of |paintInvalidationContainer|
-    LayoutRect boundsRectForPaintInvalidation(const LayoutBoxModelObject& paintInvalidationContainer, const PaintInvalidationState* = nullptr) const;
-
     // Actually do the paint invalidate of rect r for this object which has been computed in the coordinate space
     // of the GraphicsLayer backing of |paintInvalidationContainer|. Note that this coordinaten space is not the same
     // as the local coordinate space of |paintInvalidationContainer| in the presence of layer squashing.
     void invalidatePaintUsingContainer(const LayoutBoxModelObject& paintInvalidationContainer, const LayoutRect&, PaintInvalidationReason) const;
 
     // Invalidate the paint of a specific subrectangle within a given object. The rect is in the object's coordinate space.
     void invalidatePaintRectangle(const LayoutRect&) const;
     void invalidatePaintRectangleNotInvalidatingDisplayItemClients(const LayoutRect&) const;
 
     // Walk the tree after layout issuing paint invalidations for layoutObjects that have changed or moved, updating bounds that have changed, and clearing paint invalidation state.
     virtual void invalidateTreeIfNeeded(const PaintInvalidationState&);
 
     // This function only invalidates the visual overflow.
     //
     // Note that overflow is a box concept but this function
     // is only supported for block-flow.
     virtual void invalidatePaintForOverflow();
     void invalidatePaintForOverflowIfNeeded();
 
     void invalidatePaintIncludingNonCompositingDescendants();
     void invalidatePaintIncludingNonSelfPaintingLayerDescendants(const LayoutBoxModelObject& paintInvalidationContainer);
     void setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants();
 
     // Returns the rect that should have paint invalidated whenever this object changes. The rect is in the view's
     // coordinate space. This method deals with outlines and overflow.
     virtual LayoutRect absoluteClippedOverflowRect() const;
-    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const;
+
+    // Returns the rect that should have paint invalidated whenever this object changes. The rect is in the object's
+    // local coordinate space.
+    virtual LayoutRect localOverflowRectForPaintInvalidation() const;
 
     // Given a rect in the object's coordinate space, compute a rect in the coordinate space of |ancestor|.  If
     // intermediate containers have clipping or scrolling of any kind, it is applied; but overflow clipping is
     // *not* applied for |ancestor| itself. The output rect is suitable for purposes such as paint invalidation.
     //
     // If visibleRectFlags has the EdgeInclusive bit set, clipping operations will use
     // LayoutRect::inclusiveIntersect, and the return value of inclusiveIntersect will be propagated
     // to the return value of this method.  Otherwise, clipping operations will use LayoutRect::intersect,
     // and the return value will be true only if the clipped rect has non-zero area.
     // See the documentation for LayoutRect::inclusiveIntersect for more information.
-    virtual bool mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, const PaintInvalidationState*, VisibleRectFlags = DefaultVisibleRectFlags) const;
+    virtual bool mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, VisibleRectFlags = DefaultVisibleRectFlags) const;
 
     // Return the offset to the column in which the specified point (in flow-thread coordinates)
     // lives. This is used to convert a flow-thread point to a visual point.
     virtual LayoutSize columnOffset(const LayoutPoint&) const { return LayoutSize(); }
 
     virtual unsigned length() const { return 1; }
 
     bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); }
 
     bool isTransparent() const { return style()->hasOpacity(); }
     float opacity() const { return style()->opacity(); }
 
     bool hasReflection() const { return m_bitfields.hasReflection(); }
 
     // The current selection state for an object.  For blocks, the state refers to the state of the leaf
     // descendants (as described above in the SelectionState enum declaration).
     SelectionState getSelectionState() const { return m_bitfields.getSelectionState(); }
     virtual void setSelectionState(SelectionState state) { m_bitfields.setSelectionState(state); }
     inline void setSelectionStateIfNeeded(SelectionState);
     bool canUpdateSelectionOnRootLineBoxes() const;
 
     // A single rectangle that encompasses all of the selected objects within this object.  Used to determine the tightest
-    // possible bounding box for the selection. The rect returned is in the coordinate space of the paint invalidation container's backing.
-    virtual LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObject* /* paintInvalidationContainer */) const { return LayoutRect(); }
+    // possible bounding box for the selection. The rect returned is in the object's local coordinate space.
+    virtual LayoutRect localSelectionRect() const { return LayoutRect(); }
 
     // View coordinates means the coordinate space of |view()|.
     LayoutRect selectionRectInViewCoordinates() const;
 
     virtual bool canBeSelectionLeaf() const { return false; }
     bool hasSelectedChildren() const { return getSelectionState() != SelectionNone; }
 
     bool isSelectable() const;
     // Obtains the selection colors that should be used when painting a selection.
     Color selectionBackgroundColor() const;
@@ skipping 55 matching lines @@
         if (parent())
             parent()->removeChild(this);
     }
 
     bool visibleToHitTestRequest(const HitTestRequest& request) const { return style()->visibility() == VISIBLE && (request.ignorePointerEventsNone() || style()->pointerEvents() != PE_NONE) && !isInert(); }
 
     bool visibleToHitTesting() const { return style()->visibility() == VISIBLE && style()->pointerEvents() != PE_NONE && !isInert(); }
 
     // Map points and quads through elements, potentially via 3d transforms. You should never need to call these directly; use
     // localToAbsolute/absoluteToLocal methods instead.
-    virtual void mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = nullptr, const PaintInvalidationState* = nullptr) const;
+    virtual void mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = nullptr) const;
     // If the LayoutBoxModelObject ancestor is non-null, the input quad is in the space of the ancestor.
     // Otherwise:
     //   If TraverseDocumentBoundaries is specified, the input quad is in the space of the local root frame.
     //   Otherwise, the input quad is in the space of the containing frame.
     virtual void mapAncestorToLocal(const LayoutBoxModelObject*, TransformState&, MapCoordinatesFlags = ApplyContainerFlip) const;
     void mapAbsoluteToLocalPoint(MapCoordinatesFlags flags, TransformState& transformState) const
     {
         return mapAncestorToLocal(nullptr, transformState, flags);
     }
 
@@ skipping 96 matching lines @@
         return paintInvalidationState.forcedSubtreeInvalidationWithinContainer()
             || paintInvalidationState.forcedSubtreeInvalidationRectUpdateWithinContainer()
             || shouldCheckForPaintInvalidationRegardlessOfPaintInvalidationState();
     }
 
     bool shouldCheckForPaintInvalidationRegardlessOfPaintInvalidationState() const
     {
         return mayNeedPaintInvalidation() || shouldDoFullPaintInvalidation() || shouldInvalidateSelection() || m_bitfields.childShouldCheckForPaintInvalidation();
     }
 
-    virtual bool supportsPaintInvalidationStateCachedOffsets() const { return !hasTransformRelatedProperty() && !hasReflection() && !style()->isFlippedBlocksWritingMode(); }
-
     virtual LayoutRect viewRect() const;
 
     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 {
@@ skipping 788 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