CSS Motion Path: Support parsing of ray(<angle>) paths

third_party/WebKit/Source/core/style/StyleRay.h

+// Copyright 2017 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 StyleRay_h
+#define StyleRay_h
+
+#include "core/style/BasicShapes.h"
+
+namespace blink {
+
+class StyleRay : public BasicShape {
+ public:
+  enum class RaySize {
+    kClosestSide,
+    kClosestCorner,
+    kFarthestSide,
+    kFarthestCorner,
+    kSides
+  };
+
+  static PassRefPtr<StyleRay> Create(float angle, RaySize, bool contain);
+  virtual ~StyleRay() {}
+
+  float Angle() const { return angle_; }
+  RaySize Size() const { return size_; }
+  bool Contain() const { return contain_; }
+
+  void GetPath(Path&, const FloatRect&) override;
+  PassRefPtr<BasicShape> Blend(const BasicShape*, double) const override;
+  bool operator==(const BasicShape&) const override;
+
+  ShapeType GetType() const override { return kStyleRayType; }
+
+ private:
+  StyleRay(float angle, RaySize, bool contain);
+
+  float angle_;
+  RaySize size_;
+  bool contain_;
+};
+
+DEFINE_BASICSHAPE_TYPE_CASTS(StyleRay);
+
+}  // namespace blink
+
+#endif