CSS animation for SVG presentation attribute 'd'

third_party/WebKit/Source/core/animation/animatable/AnimatablePath.h

+// 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.
+
+#ifndef AnimatablePath_h
+#define AnimatablePath_h
+
+#include "core/CoreExport.h"
+#include "core/animation/animatable/AnimatableValue.h"
+#include "core/svg/SVGPathByteStream.h"
+
+namespace blink {
+
+class CORE_EXPORT AnimatablePath final : public AnimatableValue {
+public:
+    ~AnimatablePath() override { }
+    static PassRefPtr<AnimatablePath> create(PassOwnPtr<SVGPathByteStream> byteStream)
+    {
+        return adoptRef(new AnimatablePath(byteStream));
+    }
+
+    const SVGPathByteStream* pathByteStream() const { return m_byteStream.get(); }
+
+protected:
+    PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
+    bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
+
+private:
+    explicit AnimatablePath(PassOwnPtr<SVGPathByteStream> byteStream)
+        : m_byteStream(byteStream)
+    {
+    }
+    AnimatableType type() const override { return TypePath; }
+    bool equalTo(const AnimatableValue*) const override;
+    OwnPtr<SVGPathByteStream> m_byteStream;
+};
+
+DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatablePath, isPath());
+
+} // namespace blink
+
+#endif // AnimatablePath_h