Implement animations for Independent CSS Transform Properties

Source/core/animation/DoubleStyleInterpolation.cpp

Index: Source/core/animation/DoubleStyleInterpolation.cpp
diff --git a/Source/core/animation/DoubleStyleInterpolation.cpp b/Source/core/animation/DoubleStyleInterpolation.cpp
index b4eb68d700d47ec30f4ade3f7a31072d3b7a9998..a807f04100186581fa00b568285c3e38f886cdd3 100644
--- a/Source/core/animation/DoubleStyleInterpolation.cpp
+++ b/Source/core/animation/DoubleStyleInterpolation.cpp
@@ -27,39 +27,44 @@ PassOwnPtrWillBeRawPtr<InterpolableValue> DoubleStyleInterpolation::doubleToInte
     return nullptr;
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> DoubleStyleInterpolation::interpolableValueToDouble(InterpolableValue* value, bool isNumber, InterpolationRange clamp)
+static double clampToRange(double value, InterpolationRange clamp)
 {
-    ASSERT(value->isNumber());
-    double doubleValue = toInterpolableNumber(value)->value();
-
     switch (clamp) {
     case RangeAll:
         // Do nothing
         break;
     case RangeZeroToOne:
-        doubleValue = clampTo<float>(doubleValue, 0, 1);
+        value = clampTo<float>(value, 0, 1);
         break;
     case RangeOpacityFIXME:
-        doubleValue = clampTo<float>(doubleValue, 0, nextafterf(1, 0));
+        value = clampTo<float>(value, 0, nextafterf(1, 0));
         break;
     case RangeFloor:
-        doubleValue = floor(doubleValue);
+        value = floor(value);
         break;
     case RangeRound:
-        doubleValue = round(doubleValue);
+        value = round(value);
         break;
     case RangeRoundGreaterThanOrEqualToOne:
-        doubleValue = clampTo<float>(round(doubleValue), 1);
+        value = clampTo<float>(round(value), 1);
         break;
     case RangeGreaterThanOrEqualToOne:
-        doubleValue = clampTo<float>(doubleValue, 1);
+        value = clampTo<float>(value, 1);
         break;
     case RangeNonNegative:
-        doubleValue = clampTo<float>(doubleValue, 0);
+        value = clampTo<float>(value, 0);
         break;
     default:
         ASSERT_NOT_REACHED();
     }
+    return value;
+}
+
+PassRefPtrWillBeRawPtr<CSSValue> DoubleStyleInterpolation::interpolableValueToDouble(InterpolableValue* value, bool isNumber, InterpolationRange clamp)
+{
+    ASSERT(value->isNumber());
+    double doubleValue = clampToRange(toInterpolableNumber(value)->value(), clamp);
+
     if (isNumber)
         return CSSPrimitiveValue::create(doubleValue, CSSPrimitiveValue::CSS_NUMBER);
     return CSSPrimitiveValue::create(doubleValue, CSSPrimitiveValue::CSS_DEG);
@@ -80,6 +85,19 @@ DEFINE_TRACE(DoubleStyleInterpolation)
     StyleInterpolation::trace(visitor);
 }
 
+PassOwnPtrWillBeRawPtr<InterpolableValue> DoubleStyleInterpolation::toInterpolableValue(const CSSValue& value, CSSPropertyID property)

[Eric Willigers, 2015/06/23 06:50:48]

I am not certain I understand how these DoubleStyleInterpolation changes relate
to the patch. Are these perhaps rebase artifacts, or does your patch rely on
DoubleStyleInterpolation changes?

[soonm, 2015/06/24 00:26:44]

I added these interface to make ListStyleInterpolation<DoubleStyleInterpolation>
in StringKeyframe work.

+{
+    ASSERT(canCreateFrom(value));
+    return doubleToInterpolableValue(value);
+}
+
+PassRefPtrWillBeRawPtr<CSSPrimitiveValue> DoubleStyleInterpolation::fromInterpolableValue(const InterpolableValue& value, InterpolationRange range)
+{
+    // TODO Get the correct angle or double unit type
+    double doubleValue = clampToRange(toInterpolableNumber(value).value(), range);
+    return CSSPrimitiveValue::create(doubleValue, CSSPrimitiveValue::CSS_NUMBER);
+}
+
 namespace {
 
 bool extractMotionRotation(const CSSValue& value, float* rotation, MotionRotationType* rotationType)