Web Animations CSS: Start running animations on the compositor

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 11 matching lines @@
  */
 
 #include "config.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 
 #include "CSSPropertyNames.h"
 #include "FontFamilyNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "StylePropertyShorthand.h"
 #include "bindings/v8/ExceptionState.h"
+#include "core/animation/ActiveAnimations.h"
+#include "core/animation/AnimationClock.h"
+#include "core/animation/DocumentTimeline.h"
 #include "core/css/BasicShapeFunctions.h"
 #include "core/css/CSSArrayFunctionValue.h"
 #include "core/css/CSSAspectRatioValue.h"
 #include "core/css/CSSBorderImage.h"
 #include "core/css/CSSFilterValue.h"
 #include "core/css/CSSFontFeatureValue.h"
 #include "core/css/CSSFontValue.h"
 #include "core/css/CSSFunctionValue.h"
 #include "core/css/CSSGridTemplateValue.h"
 #include "core/css/CSSLineBoxContainValue.h"
@@ skipping 1571 matching lines @@
 {
     Node* styledNode = this->styledNode();
     if (!styledNode)
         return 0;
     RenderObject* renderer = styledNode->renderer();
     RefPtr<RenderStyle> style;
 
     if (updateLayout) {
         Document& document = styledNode->document();
 
+        // If a compositor animation is running we may need to service animations
+        // in order to generate an up to date value.
+        if (RuntimeEnabledFeatures::webAnimationsCSSEnabled() && styledNode->isElementNode()) {
+            const Element* element = toElement(styledNode);
+            if (const ActiveAnimations* activeAnimations = element->activeAnimations()) {
+                if (activeAnimations->hasActiveAnimationsOnCompositor(propertyID))
+                    document.serviceAnimations(monotonicallyIncreasingTime());
+            }
+        }
+
         document.updateStyleForNodeIfNeeded(styledNode);
 
         // The style recalc could have caused the styled node to be discarded or replaced
         // if it was a PseudoElement so we need to update it.
         styledNode = this->styledNode();
         renderer = styledNode->renderer();
 
         style = computeRenderStyle(propertyID);
 
         bool forceFullLayout = isLayoutDependent(propertyID, style, renderer)
@@ skipping 1582 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore