Web Animations API: Deferred computation of interpolated values

Source/core/animation/css/CSSAnimations.cpp

 /*
  * Copyright (C) 2013 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 "config.h"
 #include "core/animation/css/CSSAnimations.h"
 
 #include "StylePropertyShorthand.h"
 #include "core/animation/ActiveAnimations.h"
 #include "core/animation/CompositorAnimations.h"
 #include "core/animation/DocumentTimeline.h"
 #include "core/animation/KeyframeEffectModel.h"
+#include "core/animation/LegacyStyleInterpolation.h"
 #include "core/animation/css/CSSAnimatableValueFactory.h"
 #include "core/animation/css/CSSAnimationDataList.h"
 #include "core/animation/css/CSSPropertyEquality.h"
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Element.h"
 #include "core/dom/PseudoElement.h"
 #include "core/events/TransitionEvent.h"
 #include "core/events/WebKitAnimationEvent.h"
 #include "core/frame/UseCounter.h"
@@ skipping 386 matching lines @@
 
             AnimatableValueKeyframeVector newFrames;
             newFrames.append(toAnimatableValueKeyframe(frames[0]->clone().get()));
             newFrames.append(toAnimatableValueKeyframe(frames[1]->clone().get()));
 
             newFrames[0]->clearPropertyValue(id);
             RefPtr<InertAnimation> inertAnimationForSampling = InertAnimation::create(oldAnimation->effect(), oldAnimation->specifiedTiming(), false);
             OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > sample = inertAnimationForSampling->sample(inheritedTime);
             ASSERT(sample->size() == 1);
             newFrames[0]->setPropertyValue(id, toLegacyStyleInterpolation(sample->at(0).get())->currentValue());
+            ASSERT(newFrames[0]->propertyValue(id));
 
             effect = AnimatableValueKeyframeEffectModel::create(newFrames);
         }
 
         RefPtr<Animation> transition = Animation::create(element, effect, inertAnimation->specifiedTiming(), Animation::TransitionPriority, eventDelegate.release());
         RefPtr<AnimationPlayer> player = element->document().transitionTimeline().createAnimationPlayer(transition.get());
         element->document().compositorPendingAnimations().add(player.get());
         player->update(TimingUpdateOnDemand);
         runningTransition.player = player;
         m_transitions.set(id, runningTransition);
@@ skipping 437 matching lines @@
 }
 
 void CSSAnimationUpdate::trace(Visitor* visitor)
 {
     visitor->trace(m_newTransitions);
     visitor->trace(m_activeInterpolationsForAnimations);
     visitor->trace(m_activeInterpolationsForTransitions);
 }
 
 } // namespace WebCore