First step of PaintInvalidator implementation

third_party/WebKit/Source/core/layout/svg/LayoutSVGModelObject.cpp

 /*
  * Copyright (c) 2009, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #include "core/layout/svg/LayoutSVGModelObject.h"
 
 #include "core/layout/LayoutView.h"
 #include "core/layout/svg/LayoutSVGContainer.h"
 #include "core/layout/svg/LayoutSVGRoot.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "core/paint/PaintLayer.h"
+#include "core/paint/SVGModelObjectPaintInvalidator.h"
 #include "core/svg/SVGGraphicsElement.h"
 
 namespace blink {
 
 LayoutSVGModelObject::LayoutSVGModelObject(SVGElement* node)
     : LayoutObject(node)
 {
 }
 
 bool LayoutSVGModelObject::isChildAllowed(LayoutObject* child, const ComputedStyle&) const
@@ skipping 32 matching lines @@
 {
     quads.append(localToAbsoluteQuad(strokeBoundingBox()));
 }
 
 void LayoutSVGModelObject::willBeDestroyed()
 {
     SVGResourcesCache::clientDestroyed(this);
     LayoutObject::willBeDestroyed();
 }
 
-PaintInvalidationReason LayoutSVGModelObject::getPaintInvalidationReason(const PaintInvalidationState& paintInvalidationState,
-    const LayoutRect& oldBounds, const LayoutPoint& oldLocation, const LayoutRect& newBounds, const LayoutPoint& newLocation) const
+PaintInvalidationReason LayoutSVGModelObject::invalidatePaintIfNeeded(const PaintInvalidatorContext& context) const
 {
-    PaintInvalidationReason invalidationReason = LayoutObject::getPaintInvalidationReason(paintInvalidationState, oldBounds, oldLocation, newBounds, newLocation);
-
-    // Disable incremental invalidation for SVG objects to prevent under-
-    // invalidation. Unlike boxes, it is non-trivial (and rare) for SVG objects
-    // to be able to be incrementally invalidated (e.g., on height changes).
-    if (invalidationReason == PaintInvalidationIncremental)
-        return PaintInvalidationFull;
-
-    return invalidationReason;
+    return SVGModelObjectPaintInvalidator(*this, context).invalidatePaintIfNeeded();
 }
 
 void LayoutSVGModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) const
 {
     // Using just the rect for the SVGRoot is good enough for now.
     SVGLayoutSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects);
 }
 
 void LayoutSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const PaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
 {
@@ skipping 25 matching lines @@
 }
 
 // The SVG addOutlineRects() method adds rects in local coordinates so the default absoluteElementBoundingBoxRect()
 // returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
 IntRect LayoutSVGModelObject::absoluteElementBoundingBoxRect() const
 {
     return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalSVGCoordinates())).enclosingBoundingBox();
 }
 
 } // namespace blink