using UnityEngine;namespace Com.Xyz.UI{    [ExecuteInEditMode]    [RequireComponent(typeof(UIRoot))]    public class UIScreenAdaptive : MonoBehaviour    {        public int aspectRatioWidth = 1280;        public int aspectRatioHeight = 720;        public bool runOnlyOnce = false;        private UIRoot mRoot;        private bool mStarted = false;        private void Awake()        {            UICamera.onScreenResize += OnScreenResize;        }        private void OnDestroy()        {            UICamera.onScreenResize -= OnScreenResize;        }        private void Start()        {            mRoot = NGUITools.FindInParents<UIRoot>(this.gameObject);            mRoot.scalingStyle = UIRoot.Scaling.FixedSize;            this.Update();            mStarted = true;        }        private void OnScreenResize()        {            if (mStarted && runOnlyOnce)            {                this.Update();            }        }        private void Update()        {            float defaultAspectRatio = aspectRatioWidth * 1f / aspectRatioHeight;            float currentAspectRatio = Screen.width * 1f / Screen.height;            if (defaultAspectRatio > currentAspectRatio)            {                int horizontalManualHeight = Mathf.FloorToInt(aspectRatioWidth / currentAspectRatio);                mRoot.manualHeight = horizontalManualHeight;            }            else            {                mRoot.manualHeight = aspectRatioHeight;            }            if (runOnlyOnce && Application.isPlaying)            {                this.enabled = false;            }        }    }}