Web animations: Supply CSS transition easing

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 527 matching lines @@
         return;
     if (!to)
         to = CSSAnimatableValueFactory::create(id, style);
 
     RefPtr<AnimatableValue> from = CSSAnimatableValueFactory::create(id, oldStyle);
     // If we have multiple transitions on the same property, we will use the
     // last one since we iterate over them in order.
     if (AnimatableValue::usesDefaultInterpolation(to.get(), from.get()))
         return;
 
+    Timing timing;
+    bool isPaused;
+    RefPtr<TimingFunction> timingFunction = timingFromAnimationData(anim, timing, isPaused);
+    ASSERT(!isPaused);
+    // Note that the backwards part is required for delay to work.
+    timing.fillMode = Timing::FillModeBoth;
+
     KeyframeEffectModel::KeyframeVector keyframes;
 
     RefPtrWillBeRawPtr<Keyframe> startKeyframe = Keyframe::create();
     startKeyframe->setPropertyValue(id, from.get());
     startKeyframe->setOffset(0);
+    startKeyframe->setEasing(timingFunction);
     keyframes.append(startKeyframe);
 
     RefPtrWillBeRawPtr<Keyframe> endKeyframe = Keyframe::create();
     endKeyframe->setPropertyValue(id, to.get());
     endKeyframe->setOffset(1);
     keyframes.append(endKeyframe);
 
     RefPtrWillBeRawPtr<KeyframeEffectModel> effect = KeyframeEffectModel::create(keyframes);
 
-    Timing timing;
-    bool isPaused;
-    RefPtr<TimingFunction> timingFunction = timingFromAnimationData(anim, timing, isPaused);
-    ASSERT(!isPaused);
-    timing.timingFunction = timingFunction;
-    // Note that the backwards part is required for delay to work.
-    timing.fillMode = Timing::FillModeBoth;
-
     update->startTransition(id, from.get(), to.get(), InertAnimation::create(effect, timing, isPaused));
     ASSERT(!element->activeAnimations() || !element->activeAnimations()->isAnimationStyleChange());
 }
 
 void CSSAnimations::calculateTransitionUpdate(CSSAnimationUpdate* update, const Element* element, const RenderStyle& style)
 {
     if (!element)
         return;
 
     ActiveAnimations* activeAnimations = element->activeAnimations();
@@ skipping 310 matching lines @@
             CSSPropertyID id = convertToCSSPropertyID(i);
             if (isAnimatableProperty(id))
                 properties.append(id);
         }
         propertyShorthand = StylePropertyShorthand(CSSPropertyInvalid, properties.begin(), properties.size());
     }
     return propertyShorthand;
 }
 
 } // namespace WebCore