CSS conic gradient

third_party/WebKit/Source/platform/graphics/Gradient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Torch Mobile, Inc.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 34 matching lines @@
 
 namespace blink {
 
 class PLATFORM_EXPORT Gradient : public RefCounted<Gradient> {
     WTF_MAKE_NONCOPYABLE(Gradient);
 public:
     static PassRefPtr<Gradient> create(const FloatPoint& p0, const FloatPoint& p1)
     {
         return adoptRef(new Gradient(p0, p1));
     }
+    static PassRefPtr<Gradient> create(const FloatPoint& p0, float startAngle)
+    {
+        return adoptRef(new Gradient(p0, startAngle));
+    }
     static PassRefPtr<Gradient> create(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1, float aspectRatio = 1)
     {
         return adoptRef(new Gradient(p0, r0, p1, r1, aspectRatio));
     }
     ~Gradient();
 
     struct ColorStop {
         DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
         float stop;
         Color color;
 
         ColorStop(float s, const Color& c) : stop(s), color(c) { }
     };
     void addColorStop(const ColorStop&);
     void addColorStop(float value, const Color& color) { addColorStop(ColorStop(value, color)); }
 
     bool shaderChanged() const { return !m_gradient; }
 
-    bool isRadial() const { return m_radial; }
-    bool isZeroSize() const { return m_p0.x() == m_p1.x() && m_p0.y() == m_p1.y() && (!m_radial || m_r0 == m_r1); }
+    bool isRadial() const { return m_class == RadialClass; }
+    bool isZeroSize() const { return m_p0.x() == m_p1.x() && m_p0.y() == m_p1.y() && (!isRadial() || m_r0 == m_r1); }
 
     const FloatPoint& p0() const { return m_p0; }
     const FloatPoint& p1() const { return m_p1; }
 
     void setP0(const FloatPoint& p)
     {
         if (m_p0 == p)
             return;
 
         m_p0 = p;
@@ skipping 32 matching lines @@
 
     void setDrawsInPMColorSpace(bool drawInPMColorSpace);
 
     void setSpreadMethod(GradientSpreadMethod);
     GradientSpreadMethod spreadMethod() const { return m_spreadMethod; }
     void setGradientSpaceTransform(const AffineTransform& gradientSpaceTransformation);
     AffineTransform gradientSpaceTransform() { return m_gradientSpaceTransformation; }
 
 private:
     Gradient(const FloatPoint& p0, const FloatPoint& p1);
+    Gradient(const FloatPoint& p0, float starAngle);
     Gradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1, float aspectRatio);
 
     sk_sp<SkShader> createShader();
 
     void sortStopsIfNecessary();
 
+    enum GradientClass {
+        LinearClass,
+        RadialClass,
+        ConicClass,
+    };
+
     FloatPoint m_p0;
     FloatPoint m_p1;
     float m_r0;
     float m_r1;
     float m_aspectRatio; // For elliptical gradient, width / height.
     Vector<ColorStop, 2> m_stops;
-    bool m_radial;
+    GradientClass m_class;
     bool m_stopsSorted;
     bool m_drawInPMColorSpace;
     GradientSpreadMethod m_spreadMethod;
     AffineTransform m_gradientSpaceTransformation;
 
     sk_sp<SkShader> m_gradient;
 };
 
 } // namespace blink
 
 #endif