WIP: Implement CSS transitions on top of InterpolationTypes instead of AnimatableValues

third_party/WebKit/Source/core/animation/KeyframeEffectModel.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 42 matching lines @@
     }
     return result;
 }
 
 void KeyframeEffectModelBase::setFrames(KeyframeVector& keyframes)
 {
     // TODO(samli): Should also notify/invalidate the animation
     m_keyframes = keyframes;
     m_keyframeGroups = nullptr;
     m_interpolationEffect.clear();
-    m_lastFraction = std::numeric_limits<double>::quiet_NaN();
+    clearLastFraction();
 }
 
-bool KeyframeEffectModelBase::sample(int iteration, double fraction, double iterationDuration, Vector<RefPtr<Interpolation>>& result) const
+void KeyframeEffectModelBase::sampleImpl(int iteration, double fraction, double iterationDuration, Vector<RefPtr<Interpolation>>& result) const
 {
-    ASSERT(iteration >= 0);
-    ASSERT(!isNull(fraction));
     ensureKeyframeGroups();
     ensureInterpolationEffectPopulated();
-
-    bool changed = iteration != m_lastIteration || fraction != m_lastFraction || iterationDuration != m_lastIterationDuration;
-    m_lastIteration = iteration;
-    m_lastFraction = fraction;
-    m_lastIterationDuration = iterationDuration;
     m_interpolationEffect.getActiveInterpolations(fraction, iterationDuration, result);
-    return changed;
 }
 
 bool KeyframeEffectModelBase::snapshotNeutralCompositorKeyframes(Element& element, const ComputedStyle& oldStyle, const ComputedStyle& newStyle, const ComputedStyle* parentStyle) const
 {
     bool updated = false;
     ensureKeyframeGroups();
     for (CSSPropertyID property : CompositorAnimations::compositableProperties) {
         if (CSSPropertyEquality::propertiesEqual(property, oldStyle, newStyle))
             continue;
         PropertySpecificKeyframeGroup* keyframeGroup = m_keyframeGroups->get(PropertyHandle(property));
@@ skipping 56 matching lines @@
             for (size_t j = 1; j < i - lastIndex; ++j)
                 result[lastIndex + j]->setOffset(lastOffset + (offset - lastOffset) * j / (i - lastIndex));
             lastIndex = i;
             lastOffset = offset;
         }
     }
 
     return result;
 }
 
-bool KeyframeEffectModelBase::isTransformRelatedEffect() const
-{
-    return affects(PropertyHandle(CSSPropertyTransform))
-        || affects(PropertyHandle(CSSPropertyRotate))
-        || affects(PropertyHandle(CSSPropertyScale))
-        || affects(PropertyHandle(CSSPropertyTranslate));
-}
-
 void KeyframeEffectModelBase::ensureKeyframeGroups() const
 {
     if (m_keyframeGroups)
         return;
 
     m_keyframeGroups = wrapUnique(new KeyframeGroupMap);
     RefPtr<TimingFunction> zeroOffsetEasing = m_defaultKeyframeEasing;
     for (const auto& keyframe : normalizedKeyframes(getFrames())) {
         if (keyframe->offset() == 0)
             zeroOffsetEasing = &keyframe->easing();
@@ skipping 118 matching lines @@
     }
     if (m_keyframes.last()->offset() != 1.0) {
         appendKeyframe(m_keyframes.last()->neutralKeyframe(1, nullptr));
         addedSyntheticKeyframe = true;
     }
 
     return addedSyntheticKeyframe;
 }
 
 } // namespace blink