compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 18 matching lines @@
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/V8DOMActivityLogger.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
 #include "bindings/core/v8/V8PerContextData.h"
 #include "core/CSSValueKeywords.h"
 #include "core/SVGNames.h"
 #include "core/XMLNames.h"
 #include "core/animation/AnimationTimeline.h"
+#include "core/animation/CustomCompositorAnimations.h"
 #include "core/animation/css/CSSAnimations.h"
 #include "core/css/CSSImageValue.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/CSSValuePool.h"
 #include "core/css/PropertySetCSSStyleDeclaration.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/parser/CSSParser.h"
 #include "core/css/resolver/SelectorFilterParentScope.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/css/resolver/StyleResolverStats.h"
@@ skipping 70 matching lines @@
 #include "core/page/scrolling/ScrollState.h"
 #include "core/page/scrolling/ScrollStateCallback.h"
 #include "core/paint/PaintLayer.h"
 #include "core/svg/SVGAElement.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGElement.h"
 #include "platform/EventDispatchForbiddenScope.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/graphics/CompositorMutableProperties.h"
+#include "platform/graphics/CompositorMutation.h"
 #include "platform/scroll/ScrollableArea.h"
 #include "wtf/BitVector.h"
 #include "wtf/HashFunctions.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextPosition.h"
 
 namespace blink {
 
 namespace {
@@ skipping 804 matching lines @@
 }
 
 void Element::decrementCompositorProxiedProperties(uint32_t mutableProperties)
 {
     ElementRareData& rareData = *elementRareData();
     rareData.decrementCompositorProxiedProperties(mutableProperties);
     if (!rareData.proxiedPropertyCounts())
         setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::CompositorProxy));
 }
 
+void Element::updateFromCompositorMutation(const CompositorMutation& mutation)
+{
+    TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "Element::updateFromCompositorMutation");
+    if (mutation.isOpacityMutated() || mutation.isTransformMutated())

[esprehn, 2016/03/22 21:16:49]

how do we get here with neither of those mutated?

[majidvp, 2016/03/23 22:24:53]

Scroll{Top,Left} may also be mutated. Those are synced as part of the scroll
tree sync so we don't handle them here but it is possible to get a mutations
that is neither opacity or transform. We don't filter them out at the moment.

+        ensureElementAnimations().customCompositorAnimations().applyUpdate(*this, mutation);
+}
+
 uint32_t Element::compositorMutableProperties() const
 {
     if (!hasRareData())
         return CompositorMutableProperty::kNone;
     if (CompositorProxiedPropertySet* set = elementRareData()->proxiedPropertyCounts())
         return set->proxiedProperties();
     return CompositorMutableProperty::kNone;
 }
 
 bool Element::hasNonEmptyLayoutSize() const
@@ skipping 2677 matching lines @@
 {
 #if ENABLE(OILPAN)
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
 #endif
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink