/// <summary>
 ///
 /// </summary>
 /// <param name="value"></param>
 public static void AddSizeDeltaY(this RectTransform trans, float value)
 {
     trans.AddSizeDelta(0, value);
 }
 public static void AddSizeDelta(this RectTransform rect, Vector2 vec)
 {
     rect.AddSizeDelta(vec.x, vec.y);
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="value"></param>
 public static void AddSizeDeltaX(this RectTransform trans, float value)
 {
     trans.AddSizeDelta(value, 0);
 }