operator + method
Binary addition operator for adding an Offset to a Size.
Returns a Size whose width is the sum of the width of the left-hand-side operand, a Size, and the Offset.dx dimension of the right-hand-side operand, an Offset, and whose height is the sum of the height of the left-hand-side operand and the Offset.dy dimension of the right-hand-side operand.
Implementation
Size operator +(Offset other) => Size(width + other.dx, height + other.dy);