Migrate ui::Transform to gfx::Transform

ui/gfx/transform.h

 // Copyright (c) 2012 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 UI_GFX_TRANSFORM_H_
 #define UI_GFX_TRANSFORM_H_
 
 #include "third_party/skia/include/utils/SkMatrix44.h"
 #include "ui/base/ui_export.h"
 
 namespace gfx {
+
 class Rect;
 class Point;
 class Point3f;
-}
-
-namespace ui {
 
 // 4x4 transformation matrix. Transform is cheap and explicitly allows
 // copy/assign.
 class UI_EXPORT Transform {
  public:
   Transform();
   ~Transform();
 
   bool operator==(const Transform& rhs) const;
   bool operator!=(const Transform& rhs) const;
 
   // NOTE: The 'Set' functions overwrite the previously set transformation
   // parameters. The 'Concat' functions apply a transformation (e.g. rotation,
   // scale, translate) on top of the existing transforms, instead of overwriting
   // them.
 
   // NOTE: The order of the 'Set' function calls do not matter. However, the
   // order of the 'Concat' function calls do matter, especially when combined
   // with the 'Set' functions.
 
   // Sets the rotation of the transformation.
   void SetRotate(float degree);
 
   // Sets the rotation of the transform (about a vector).
-  void SetRotateAbout(const gfx::Point3f& point, float degree);
+  void SetRotateAbout(const Point3f& point, float degree);
 
   // Sets the scaling parameters.
   void SetScaleX(float x);
   void SetScaleY(float y);
   void SetScale(float x, float y);
 
   // Sets the translation parameters.
   void SetTranslateX(float x);
   void SetTranslateY(float y);
   void SetTranslate(float x, float y);
 
   // Creates a perspective matrix.
   // Based on the 'perspective' operation from
   // http://www.w3.org/TR/css3-3d-transforms/#transform-functions
   void SetPerspectiveDepth(float depth);
 
   // Applies a rotation on the current transformation.
   void ConcatRotate(float degree);
 
   // Applies an axis-angle rotation on the current transformation.
-  void ConcatRotateAbout(const gfx::Point3f& point, float degree);
+  void ConcatRotateAbout(const Point3f& point, float degree);
 
   // Applies scaling on current transform.
   void ConcatScale(float x, float y);
 
   // Applies translation on current transform.
   void ConcatTranslate(float x, float y);
 
   // Applies a transformation on the current transformation
   // (i.e. 'this = this * transform;').
   void PreconcatTransform(const Transform& transform);
 
   // Applies a transformation on the current transformation
   // (i.e. 'this = transform * this;').
   void ConcatTransform(const Transform& transform);
 
   // Does the transformation change anything?
   bool HasChange() const;
 
   // Inverts the transform which is passed in. Returns true if successful.
   bool GetInverse(Transform* transform) const;
 
   // Applies the transformation on the point. Returns true if the point is
   // transformed successfully.
-  void TransformPoint(gfx::Point3f& point) const;
+  void TransformPoint(Point3f& point) const;
 
   // Applies the transformation on the point. Returns true if the point is
   // transformed successfully. Rounds the result to the nearest point.
-  void TransformPoint(gfx::Point& point) const;
+  void TransformPoint(Point& point) const;
 
   // Applies the reverse transformation on the point. Returns true if the
   // transformation can be inverted.
-  bool TransformPointReverse(gfx::Point3f& point) const;
+  bool TransformPointReverse(Point3f& point) const;
 
   // Applies the reverse transformation on the point. Returns true if the
   // transformation can be inverted. Rounds the result to the nearest point.
-  bool TransformPointReverse(gfx::Point& point) const;
+  bool TransformPointReverse(Point& point) const;
 
   // Applies transformation on the rectangle. Returns true if the transformed
   // rectangle was axis aligned. If it returns false, rect will be the
   // smallest axis aligned bounding box containing the transformed rect.
-  void TransformRect(gfx::Rect* rect) const;
+  void TransformRect(Rect* rect) const;
 
   // Applies the reverse transformation on the rectangle. Returns true if
   // the transformed rectangle was axis aligned. If it returns false,
   // rect will be the smallest axis aligned bounding box containing the
   // transformed rect.
-  bool TransformRectReverse(gfx::Rect* rect) const;
+  bool TransformRectReverse(Rect* rect) const;
 
   // Returns the underlying matrix.
   const SkMatrix44& matrix() const { return matrix_; }
   SkMatrix44& matrix() { return matrix_; }
 
  private:
   void TransformPointInternal(const SkMatrix44& xform,
-                              gfx::Point& point) const;
+                              Point& point) const;
 
   void TransformPointInternal(const SkMatrix44& xform,
-                              gfx::Point3f& point) const;
+                              Point3f& point) const;
 
   SkMatrix44 matrix_;
 
   // copy/assign are allowed.
 };
 
-}// namespace ui
+}  // namespace gfx
 
 #endif  // UI_GFX_TRANSFORM_H_