Make 'transform' a presentation attribute on SVG elements

third_party/WebKit/Source/platform/transforms/RotateTransformOperation.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 13 matching lines @@
 
 #ifndef RotateTransformOperation_h
 #define RotateTransformOperation_h
 
 #include "platform/geometry/FloatPoint3D.h"
 #include "platform/transforms/Rotation.h"
 #include "platform/transforms/TransformOperation.h"
 
 namespace blink {
 
-class PLATFORM_EXPORT RotateTransformOperation final
-    : public TransformOperation {
+class PLATFORM_EXPORT RotateTransformOperation : public TransformOperation {
  public:
   static PassRefPtr<RotateTransformOperation> create(double angle,
                                                      OperationType type) {
     return create(Rotation(FloatPoint3D(0, 0, 1), angle), type);
   }
 
   static PassRefPtr<RotateTransformOperation> create(double x,
                                                      double y,
                                                      double z,
                                                      double angle,
                                                      OperationType type) {
     return create(Rotation(FloatPoint3D(x, y, z), angle), type);
   }
 
   static PassRefPtr<RotateTransformOperation> create(const Rotation& rotation,
                                                      OperationType type) {
+    DCHECK(isMatchingOperationType(type));
     return adoptRef(new RotateTransformOperation(rotation, type));
   }
 
   double x() const { return m_rotation.axis.x(); }
   double y() const { return m_rotation.axis.y(); }
   double z() const { return m_rotation.axis.z(); }
   double angle() const { return m_rotation.angle; }
   const FloatPoint3D& axis() const { return m_rotation.axis; }
 
   static bool getCommonAxis(const RotateTransformOperation*,
                             const RotateTransformOperation*,
                             FloatPoint3D& resultAxis,
                             double& resultAngleA,
                             double& resultAngleB);
 
   virtual bool canBlendWith(const TransformOperation& other) const;
   OperationType type() const override { return m_type; }
 
   void apply(TransformationMatrix& transform,
              const FloatSize& /*borderBoxSize*/) const override {
     transform.rotate3d(m_rotation);
   }
 
   static bool isMatchingOperationType(OperationType type) {
     return type == Rotate || type == RotateX || type == RotateY ||
            type == RotateZ || type == Rotate3D;
   }
 
- private:
+ protected:
   bool operator==(const TransformOperation&) const override;
 
   PassRefPtr<TransformOperation> blend(const TransformOperation* from,
                                        double progress,
                                        bool blendToIdentity = false) override;
-  PassRefPtr<TransformOperation> zoom(double factor) final { return this; }
+  PassRefPtr<TransformOperation> zoom(double factor) override { return this; }
 
   RotateTransformOperation(const Rotation& rotation, OperationType type)
       : m_rotation(rotation), m_type(type) {
-    ASSERT(isMatchingOperationType(type));
   }
 
   const Rotation m_rotation;
   const OperationType m_type;
 };
 
 DEFINE_TRANSFORM_TYPE_CASTS(RotateTransformOperation);
 
+class PLATFORM_EXPORT RotateAroundOriginTransformOperation final
+    : public RotateTransformOperation {
+ public:
+  static PassRefPtr<RotateAroundOriginTransformOperation>
+  create(double angle, double originX, double originY) {
+    return adoptRef(
+        new RotateAroundOriginTransformOperation(angle, originX, originY));
+  }
+
+  void apply(TransformationMatrix&, const FloatSize&) const override;
+
+  static bool isMatchingOperationType(OperationType type) {
+    return type == RotateAroundOrigin;
+  }
+
+ private:
+  RotateAroundOriginTransformOperation(double angle,
+                                       double originX,
+                                       double originY);
+
+  bool operator==(const TransformOperation&) const override;
+
+  PassRefPtr<TransformOperation> blend(const TransformOperation* from,
+                                       double progress,
+                                       bool blendToIdentity = false) override;
+  PassRefPtr<TransformOperation> zoom(double factor) override;
+
+  double m_originX;
+  double m_originY;
+};
+
+DEFINE_TRANSFORM_TYPE_CASTS(RotateAroundOriginTransformOperation);
+
 }  // namespace blink
 
 #endif  // RotateTransformOperation_h