Web Animations: Add SVGNumberInterpolationType

third_party/WebKit/Source/core/animation/SVGNumberInterpolationType.cpp

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/animation/SVGNumberInterpolationType.h"
+
+#include "core/animation/InterpolationEnvironment.h"
+#include "core/animation/StringKeyframe.h"
+#include "core/svg/SVGNumber.h"
+#include "core/svg/properties/SVGAnimatedProperty.h"
+
+namespace blink {
+
+PassOwnPtr<InterpolationValue> SVGNumberInterpolationType::maybeConvertNeutral() const
+{
+    return InterpolationValue::create(*this, InterpolableNumber::create(0));
+}
+
+PassOwnPtr<InterpolationValue> SVGNumberInterpolationType::maybeConvertSVGValue(const SVGPropertyBase& svgValue) const
+{
+    if (svgValue.type() != AnimatedNumber)
+        return nullptr;
+    return InterpolationValue::create(*this, InterpolableNumber::create(toSVGNumber(svgValue).value()));
+}
+
+PassOwnPtr<InterpolationValue> SVGNumberInterpolationType::maybeConvertUnderlyingValue(const InterpolationEnvironment& environment) const
+{
+    return maybeConvertSVGValue(environment.svgBaseValue());
+}
+
+RefPtrWillBeRawPtr<SVGPropertyBase> SVGNumberInterpolationType::appliedSVGValue(const InterpolableValue& interpolableValue, const NonInterpolableValue*) const
+{
+    double value = toInterpolableNumber(interpolableValue).value();
+    return SVGNumber::create(m_isNonNegative && value < 0 ? 0 : value);
+}
+
+} // namespace blink