Fabric: Defined `+` and `*` operators for Point and Size geometric types

Summary:
@public
Trivial. Those operations are very useful in layout algorithms.

Reviewed By: mdvacca

Differential Revision: D9403566

fbshipit-source-id: e76967aaaac3a36bf6d3e7a468b5ae7769a4dcac

ReactCommon/fabric/graphics/Geometry.h

@@ -20,23 +20,29 @@ struct Point {
   Float x {0};
   Float y {0};
 
-  Point& operator += (const Point& rhs) {
-    x += rhs.x;
-    y += rhs.y;
+  Point &operator+=(const Point &point) {
+    x += point.x;
+    y += point.y;
     return *this;
   }
 
-  friend Point operator + (Point lhs, const Point& rhs) {
+  Point &operator*=(const Point &point) {
+    x *= point.x;
+    y *= point.y;
+    return *this;
+  }
+
+  friend Point operator+(Point lhs, const Point &rhs) {
     return lhs += rhs;
   }
 
-  bool operator ==(const Point& rhs) const {
+  bool operator==(const Point &rhs) const {
     return
       std::tie(this->x, this->y) ==
       std::tie(rhs.x, rhs.y);
   }
 
-  bool operator !=(const Point& rhs) const {
+  bool operator!=(const Point &rhs) const {
     return !(*this == rhs);
   }
 };
@@ -48,13 +54,25 @@ struct Size {
   Float width {0};
   Float height {0};
 
-  bool operator ==(const Size& rhs) const {
+  Size &operator+=(const Point &point) {
+    width += point.x;
+    height += point.y;
+    return *this;
+  }
+
+  Size &operator*=(const Point &point) {
+    width *= point.x;
+    height *= point.y;
+    return *this;
+  }
+
+  bool operator==(const Size &rhs) const {
     return
       std::tie(this->width, this->height) ==
       std::tie(rhs.width, rhs.height);
   }
 
-  bool operator !=(const Size& rhs) const {
+  bool operator!=(const Size &rhs) const {
     return !(*this == rhs);
   }
 };
@@ -66,13 +84,13 @@ struct Rect {
   Point origin {0, 0};
   Size size {0, 0};
 
-  bool operator ==(const Rect& rhs) const {
+  bool operator==(const Rect &rhs) const {
     return
       std::tie(this->origin, this->size) ==
       std::tie(rhs.origin, rhs.size);
   }
 
-  bool operator !=(const Rect& rhs) const {
+  bool operator!=(const Rect &rhs) const {
     return !(*this == rhs);
   }
 
@@ -100,13 +118,13 @@ struct EdgeInsets {
   Float right {0};
   Float bottom {0};
 
-  bool operator ==(const EdgeInsets& rhs) const {
+  bool operator==(const EdgeInsets &rhs) const {
     return
       std::tie(this->left, this->top, this->right, this->bottom) ==
       std::tie(rhs.left, rhs.top, rhs.right, rhs.bottom);
   }
 
-  bool operator !=(const EdgeInsets& rhs) const {
+  bool operator!=(const EdgeInsets &rhs) const {
     return !(*this == rhs);
   }
 
@@ -126,13 +144,13 @@ struct CornerInsets {
   Float bottomLeft {0};
   Float bottomRight {0};
 
-  bool operator ==(const CornerInsets& rhs) const {
+  bool operator==(const CornerInsets &rhs) const {
     return
     std::tie(this->topLeft, this->topRight, this->bottomLeft, this->bottomRight) ==
     std::tie(rhs.topLeft, rhs.topRight, rhs.bottomLeft, rhs.bottomRight);
   }
 
-  bool operator !=(const CornerInsets& rhs) const {
+  bool operator!=(const CornerInsets &rhs) const {
     return !(*this == rhs);
   }