Move rendering/RenderLayer* to layout/

Source/core/layout/compositing/CompositingInputsUpdater.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/layout/compositing/CompositingInputsUpdater.h"
 
+#include "core/layout/Layer.h"
 #include "core/layout/compositing/CompositedLayerMapping.h"
-#include "core/layout/compositing/RenderLayerCompositor.h"
+#include "core/layout/compositing/LayerCompositor.h"
 #include "core/rendering/RenderBlock.h"
-#include "core/rendering/RenderLayer.h"
 #include "platform/TraceEvent.h"
 
 namespace blink {
 
-CompositingInputsUpdater::CompositingInputsUpdater(RenderLayer* rootRenderLayer)
+CompositingInputsUpdater::CompositingInputsUpdater(Layer* rootLayer)
     : m_geometryMap(UseTransforms)
-    , m_rootRenderLayer(rootRenderLayer)
+    , m_rootLayer(rootLayer)
 {
 }
 
 CompositingInputsUpdater::~CompositingInputsUpdater()
 {
 }
 
 void CompositingInputsUpdater::update()
 {
     TRACE_EVENT0("blink", "CompositingInputsUpdater::update");
-    updateRecursive(m_rootRenderLayer, DoNotForceUpdate, AncestorInfo());
+    updateRecursive(m_rootLayer, DoNotForceUpdate, AncestorInfo());
 }
 
-static const RenderLayer* findParentLayerOnClippingContainerChain(const RenderLayer* layer)
+static const Layer* findParentLayerOnClippingContainerChain(const Layer* layer)
 {
     RenderObject* current = layer->renderer();
     while (current) {
         if (current->style()->position() == FixedPosition) {
             for (current = current->parent(); current && !current->canContainFixedPositionObjects(); current = current->parent()) {
                 // All types of clips apply to fixed-position descendants of other fixed-position elements.
                 // Note: it's unclear whether this is what the spec says. Firefox does not clip, but Chrome does.
                 if (current->style()->position() == FixedPosition && current->hasClipOrOverflowClip()) {
                     ASSERT(current->hasLayer());
-                    return static_cast<const RenderLayerModelObject*>(current)->layer();
+                    return static_cast<const LayoutLayerModelObject*>(current)->layer();
                 }
 
                 // CSS clip applies to fixed position elements even for ancestors that are not what the
                 // fixed element is positioned with respect to.
                 if (current->hasClip()) {
                     ASSERT(current->hasLayer());
-                    return static_cast<const RenderLayerModelObject*>(current)->layer();
+                    return static_cast<const LayoutLayerModelObject*>(current)->layer();
                 }
             }
         } else {
             current = current->containingBlock();
         }
 
         if (current->hasLayer())
-            return static_cast<const RenderLayerModelObject*>(current)->layer();
+            return static_cast<const LayoutLayerModelObject*>(current)->layer();
         // Having clip or overflow clip forces the RenderObject to become a layer.
         ASSERT(!current->hasClipOrOverflowClip());
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
-static const RenderLayer* findParentLayerOnContainingBlockChain(const RenderObject* object)
+static const Layer* findParentLayerOnContainingBlockChain(const RenderObject* object)
 {
     for (const RenderObject* current = object; current; current = current->containingBlock()) {
         if (current->hasLayer())
-            return static_cast<const RenderLayerModelObject*>(current)->layer();
+            return static_cast<const LayoutLayerModelObject*>(current)->layer();
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
-static bool hasClippedStackingAncestor(const RenderLayer* layer, const RenderLayer* clippingLayer)
+static bool hasClippedStackingAncestor(const Layer* layer, const Layer* clippingLayer)
 {
     if (layer == clippingLayer)
         return false;
     const RenderObject* clippingRenderer = clippingLayer->renderer();
-    for (const RenderLayer* current = layer->compositingContainer(); current && current != clippingLayer; current = current->compositingContainer()) {
+    for (const Layer* current = layer->compositingContainer(); current && current != clippingLayer; current = current->compositingContainer()) {
         if (current->renderer()->hasClipOrOverflowClip() && !clippingRenderer->isDescendantOf(current->renderer()))
             return true;
 
         if (const RenderObject* container = current->clippingContainer()) {
             if (clippingRenderer != container && !clippingRenderer->isDescendantOf(container))
                 return true;
         }
     }
     return false;
 }
 
-void CompositingInputsUpdater::updateRecursive(RenderLayer* layer, UpdateType updateType, AncestorInfo info)
+void CompositingInputsUpdater::updateRecursive(Layer* layer, UpdateType updateType, AncestorInfo info)
 {
     if (!layer->childNeedsCompositingInputsUpdate() && updateType != ForceUpdate)
         return;
 
     m_geometryMap.pushMappingsToAncestor(layer, layer->parent());
 
     if (layer->hasCompositedLayerMapping())
         info.enclosingCompositedLayer = layer;
 
     if (layer->needsCompositingInputsUpdate()) {
         if (info.enclosingCompositedLayer)
             info.enclosingCompositedLayer->compositedLayerMapping()->setNeedsGraphicsLayerUpdate(GraphicsLayerUpdateSubtree);
         updateType = ForceUpdate;
     }
 
     if (updateType == ForceUpdate) {
-        RenderLayer::AncestorDependentCompositingInputs properties;
+        Layer::AncestorDependentCompositingInputs properties;
 
         if (!layer->isRootLayer()) {
             properties.clippedAbsoluteBoundingBox = enclosingIntRect(m_geometryMap.absoluteRect(layer->boundingBoxForCompositingOverlapTest()));
             // FIXME: Setting the absBounds to 1x1 instead of 0x0 makes very little sense,
             // but removing this code will make JSGameBench sad.
             // See https://codereview.chromium.org/13912020/
             if (properties.clippedAbsoluteBoundingBox.isEmpty())
                 properties.clippedAbsoluteBoundingBox.setSize(IntSize(1, 1));
 
-            IntRect clipRect = pixelSnappedIntRect(layer->clipper().backgroundClipRect(ClipRectsContext(m_rootRenderLayer, AbsoluteClipRects)).rect());
+            IntRect clipRect = pixelSnappedIntRect(layer->clipper().backgroundClipRect(ClipRectsContext(m_rootLayer, AbsoluteClipRects)).rect());
             properties.clippedAbsoluteBoundingBox.intersect(clipRect);
 
-            const RenderLayer* parent = layer->parent();
+            const Layer* parent = layer->parent();
             properties.opacityAncestor = parent->isTransparent() ? parent : parent->opacityAncestor();
             properties.transformAncestor = parent->hasTransformRelatedProperty() ? parent : parent->transformAncestor();
             properties.filterAncestor = parent->hasFilter() ? parent : parent->filterAncestor();
 
             if (info.hasAncestorWithClipOrOverflowClip) {
-                const RenderLayer* parentLayerOnClippingContainerChain = findParentLayerOnClippingContainerChain(layer);
+                const Layer* parentLayerOnClippingContainerChain = findParentLayerOnClippingContainerChain(layer);
                 const bool parentHasClipOrOverflowClip = parentLayerOnClippingContainerChain->renderer()->hasClipOrOverflowClip();
                 properties.clippingContainer = parentHasClipOrOverflowClip ? parentLayerOnClippingContainerChain->renderer() : parentLayerOnClippingContainerChain->clippingContainer();
             }
 
             if (info.lastScrollingAncestor) {
                 const RenderObject* containingBlock = layer->renderer()->containingBlock();
-                const RenderLayer* parentLayerOnContainingBlockChain = findParentLayerOnContainingBlockChain(containingBlock);
+                const Layer* parentLayerOnContainingBlockChain = findParentLayerOnContainingBlockChain(containingBlock);
 
                 properties.ancestorScrollingLayer = parentLayerOnContainingBlockChain->ancestorScrollingLayer();
                 if (parentLayerOnContainingBlockChain->scrollsOverflow())
                     properties.ancestorScrollingLayer = parentLayerOnContainingBlockChain;
 
                 if (layer->renderer()->isOutOfFlowPositioned() && !layer->subtreeIsInvisible()) {
-                    const RenderLayer* clippingLayer = properties.clippingContainer ? properties.clippingContainer->enclosingLayer() : layer->compositor()->rootRenderLayer();
+                    const Layer* clippingLayer = properties.clippingContainer ? properties.clippingContainer->enclosingLayer() : layer->compositor()->rootLayer();
                     if (hasClippedStackingAncestor(layer, clippingLayer))
                         properties.clipParent = clippingLayer;
                 }
 
                 if (!layer->stackingNode()->isNormalFlowOnly()
                     && properties.ancestorScrollingLayer
                     && !info.ancestorStackingContext->renderer()->isDescendantOf(properties.ancestorScrollingLayer->renderer()))
                     properties.scrollParent = properties.ancestorScrollingLayer;
             }
         }
 
         properties.hasAncestorWithClipPath = info.hasAncestorWithClipPath;
         layer->updateAncestorDependentCompositingInputs(properties);
     }
 
     if (layer->stackingNode()->isStackingContext())
         info.ancestorStackingContext = layer;
 
     if (layer->scrollsOverflow())
         info.lastScrollingAncestor = layer;
 
     if (layer->renderer()->hasClipOrOverflowClip())
         info.hasAncestorWithClipOrOverflowClip = true;
 
     if (layer->renderer()->hasClipPath())
         info.hasAncestorWithClipPath = true;
 
-    RenderLayer::DescendantDependentCompositingInputs descendantProperties;
-    for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling()) {
+    Layer::DescendantDependentCompositingInputs descendantProperties;
+    for (Layer* child = layer->firstChild(); child; child = child->nextSibling()) {
         updateRecursive(child, updateType, info);
 
         descendantProperties.hasDescendantWithClipPath |= child->hasDescendantWithClipPath() || child->renderer()->hasClipPath();
         descendantProperties.hasNonIsolatedDescendantWithBlendMode |= (!child->stackingNode()->isStackingContext() && child->hasNonIsolatedDescendantWithBlendMode()) || child->renderer()->style()->hasBlendMode();
     }
 
     layer->updateDescendantDependentCompositingInputs(descendantProperties);
     layer->didUpdateCompositingInputs();
 
     m_geometryMap.popMappingsToAncestor(layer->parent());
 }
 
 #if ENABLE(ASSERT)
 
-void CompositingInputsUpdater::assertNeedsCompositingInputsUpdateBitsCleared(RenderLayer* layer)
+void CompositingInputsUpdater::assertNeedsCompositingInputsUpdateBitsCleared(Layer* layer)
 {
     ASSERT(!layer->childNeedsCompositingInputsUpdate());
     ASSERT(!layer->needsCompositingInputsUpdate());
 
-    for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling())
+    for (Layer* child = layer->firstChild(); child; child = child->nextSibling())
         assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 } // namespace blink