using UnityEngine;
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[ExecuteAlways]
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[RequireComponent(typeof(RectTransform))]
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public class SafeAreaUI : MonoBehaviour
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{
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public const int SafeWidth = 75;
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public const int SafeBottom = 15; //竖屏下方间隔
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public enum SimDevice { None, IphoneX }
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public static SimDevice Sim
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{
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set { LocalSave.SetInt("SimDevice", (int)value); }
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get { return (SimDevice)LocalSave.GetInt("SimDevice"); }
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}
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Rect[] NSA_IphoneX = new Rect[]
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{
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new Rect (0f, 102f / 2436f, 1f, 2202f / 2436f), // Portrait
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new Rect (132f / 2436f, 63f / 1125f, 2172f / 2436f, 1062f / 1125f) // Landscape
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};
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RectTransform _Panel;
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Rect LastSafeArea = new Rect(0, 0, 0, 0);
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Rect LastRect = new Rect(0, 0, 0, 0);
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RectTransform Panel
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{
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get
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{
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if (_Panel == null)
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_Panel = GetComponent<RectTransform>();
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return _Panel;
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}
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}
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void Awake()
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{
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Refresh();
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}
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void Update()
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{
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Refresh();
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}
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void Refresh()
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{
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// Rect safeArea = GetSafeArea();
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// if (safeArea != LastSafeArea || LastRect != Panel.rect)
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if (LastRect != Panel.rect)
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ApplySafeArea();
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}
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public void ApplySafeArea()
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{
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Panel.anchorMin = Vector2.zero;
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Panel.anchorMax = Vector2.one;
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//竖屏
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if (Screen.height > Screen.width)
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{
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if (Screen.height / Screen.width > 1.8)//宽屏需要适配
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{
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//上下各间隔SafeWidth
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Panel.offsetMin = new Vector2(0, SafeBottom);
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Panel.offsetMax = new Vector2(0, -SafeWidth);
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}
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else
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{
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Panel.offsetMin = new Vector2(0, 0);
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Panel.offsetMax = new Vector2(0, 0);
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}
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}
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else
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{//横屏
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if (Screen.width / Screen.height > 1.8)//宽屏需要适配
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{
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//两边各间隔SafeWidth
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Panel.offsetMin = new Vector2(SafeWidth, 0);
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Panel.offsetMax = new Vector2(-SafeWidth, 0);
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}
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else
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{
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Panel.offsetMin = new Vector2(0, 0);
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Panel.offsetMax = new Vector2(0, 0);
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}
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}
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LastRect = Panel.rect;
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}
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#region 系统api的安全区
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Rect GetSafeArea()
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{
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if (!Application.isEditor)
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return Screen.safeArea;
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Rect safeArea = Screen.safeArea;
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if (Sim != SimDevice.None)
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{
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Rect nsa = new Rect(0, 0, Screen.width, Screen.height);
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switch (Sim)
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{
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case SimDevice.IphoneX:
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if (Screen.height > Screen.width) // Portrait
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nsa = NSA_IphoneX[0];
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else // Landscape
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nsa = NSA_IphoneX[1];
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break;
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default:
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break;
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}
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safeArea = new Rect(Screen.width * nsa.x, Screen.height * nsa.y, Screen.width * nsa.width, Screen.height * nsa.height);
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}
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return safeArea;
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}
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void ApplySafeArea(Rect safeArea)
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{
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Debug.LogFormat("ApplySafeArea：{0} ; rect:{1}", safeArea, Panel.rect);
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Panel.anchorMin = Vector2.zero;
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Panel.anchorMax = Vector2.one;
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//适配四个方向
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// Panel.offsetMin = safeArea.min;
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// Panel.offsetMax = new Vector2(-(Screen.width - safeArea.max.x), -(Screen.height - safeArea.max.y));
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//只适配两边
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Panel.offsetMin = new Vector2(safeArea.min.x, 0);
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Panel.offsetMax = new Vector2(-(Screen.width - safeArea.max.x), 0);
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LastRect = Panel.rect;
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LastSafeArea = safeArea;
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}
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#endregion
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}
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