CSS filters: fix filtered parent with composited, transformed child.

third_party/WebKit/Source/core/paint/PaintLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 2150 matching lines @@
 bool PaintLayer::overlapBoundsIncludeChildren() const
 {
     const auto* style = layoutObject()->style();
     if (style && style->filter().hasFilterThatMovesPixels())
         return true;
     if (RuntimeEnabledFeatures::cssBoxReflectFilterEnabled() && layoutObject()->hasReflection())
         return true;
     return false;
 }
 
-static void expandRectForReflectionAndStackingChildren(const PaintLayer* ancestorLayer, LayoutRect& result)
+static void expandRectForReflectionAndStackingChildren(const PaintLayer* ancestorLayer, LayoutRect& result, PaintLayer::CalculateBoundsOptions options)
 {
     if (ancestorLayer->reflectionInfo() && !ancestorLayer->reflectionInfo()->reflectionLayer()->hasCompositedLayerMapping() && !RuntimeEnabledFeatures::cssBoxReflectFilterEnabled())
         result.unite(ancestorLayer->reflectionInfo()->reflectionLayer()->boundingBoxForCompositing(ancestorLayer));
 
     ASSERT(ancestorLayer->stackingNode()->isStackingContext() || !ancestorLayer->stackingNode()->hasPositiveZOrderList());
 
 #if ENABLE(ASSERT)
     LayerListMutationDetector mutationChecker(const_cast<PaintLayer*>(ancestorLayer)->stackingNode());
 #endif
 
     PaintLayerStackingNodeIterator iterator(*ancestorLayer->stackingNode(), AllChildren);
     while (PaintLayerStackingNode* node = iterator.next()) {
         // Here we exclude both directly composited layers and squashing layers
         // because those Layers don't paint into the graphics layer
         // for this Layer. For example, the bounds of squashed Layers
         // will be included in the computation of the appropriate squashing
         // GraphicsLayer.
-        if (node->layer()->compositingState() != NotComposited)
+        if (options != PaintLayer::CalculateBoundsOptions::IncludeTransformsAndCompositedChildLayers && node->layer()->compositingState() != NotComposited)
             continue;
-        result.unite(node->layer()->boundingBoxForCompositing(ancestorLayer));
+        result.unite(node->layer()->boundingBoxForCompositing(ancestorLayer, options));
     }
 }
 
-LayoutRect PaintLayer::physicalBoundingBoxIncludingReflectionAndStackingChildren(const LayoutPoint& offsetFromRoot) const
+LayoutRect PaintLayer::physicalBoundingBoxIncludingReflectionAndStackingChildren(const LayoutPoint& offsetFromRoot, CalculateBoundsOptions options) const
 {
     LayoutRect result = physicalBoundingBox(LayoutPoint());
 
     const_cast<PaintLayer*>(this)->stackingNode()->updateLayerListsIfNeeded();
 
-    expandRectForReflectionAndStackingChildren(this, result);
+    expandRectForReflectionAndStackingChildren(this, result, options);
 
     result.moveBy(offsetFromRoot);
     return result;
 }
 
 LayoutRect PaintLayer::boundingBoxForCompositing(const PaintLayer* ancestorLayer, CalculateBoundsOptions options) const
 {
     if (!isSelfPaintingLayer())
         return LayoutRect();
 
@@ skipping 23 matching lines @@
         result = physicalBoundingBox(LayoutPoint());
 
         const_cast<PaintLayer*>(this)->stackingNode()->updateLayerListsIfNeeded();
 
         // Reflections are implemented with Layers that hang off of the reflected layer. However,
         // the reflection layer subtree does not include the subtree of the parent Layer, so
         // a recursive computation of stacking children yields no results. This breaks cases when there are stacking
         // children of the parent, that need to be included in reflected composited bounds.
         // Fix this by including composited bounds of stacking children of the reflected Layer.
         if (hasCompositedLayerMapping() && parent() && parent()->reflectionInfo() && parent()->reflectionInfo()->reflectionLayer() == this)
-            expandRectForReflectionAndStackingChildren(parent(), result);
+            expandRectForReflectionAndStackingChildren(parent(), result, options);
         else
-            expandRectForReflectionAndStackingChildren(this, result);
+            expandRectForReflectionAndStackingChildren(this, result, options);
 
         // Only enlarge by the filter outsets if we know the filter is going to be rendered in software.
         // Accelerated filters will handle their own outsets.
         if (paintsWithFilters())
             result = mapLayoutRectForFilter(result);
     }
 
-    if (transform() && paintsWithTransform(GlobalPaintNormalPhase) && (this != ancestorLayer || options == MaybeIncludeTransformForAncestorLayer))
+    if (transform() && (options == IncludeTransformsAndCompositedChildLayers || ((paintsWithTransform(GlobalPaintNormalPhase) && (this != ancestorLayer || options == MaybeIncludeTransformForAncestorLayer)))))
         result = transform()->mapRect(result);
 
     if (shouldFragmentCompositedBounds(ancestorLayer)) {
         convertFromFlowThreadToVisualBoundingBoxInAncestor(ancestorLayer, result);
         return result;
     }
     LayoutPoint delta;
     convertToLayerCoords(ancestorLayer, delta);
     result.moveBy(delta);
     return result;
@@ skipping 658 matching lines @@
 
 void showLayerTree(const blink::LayoutObject* layoutObject)
 {
     if (!layoutObject) {
         fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n");
         return;
     }
     showLayerTree(layoutObject->enclosingLayer());
 }
 #endif