Added support for getting the safe rendering area

Author: Over17

Assets/Scripts/AndroidSafeArea.cs

@@ -0,0 +1,115 @@
+using UnityEngine;
+
+public class WindowInsetsListener : AndroidJavaProxy
+{
+ public struct Insets
+ {
+ public int left, top, right, bottom;
+ }
+
+ private static Insets m_safeInset = new Insets();
+ private static Object m_safeInsetLock = new Object();
+
+ public static Insets SafeInset
+ {
+ get
+ {
+ return m_safeInset;
+ }
+ }
+
+ public void InitInsets(AndroidJavaObject decorView)
+ {
+ onApplyWindowInsets(decorView, decorView.Call<AndroidJavaObject>("getRootWindowInsets"));
+ }
+
+ public WindowInsetsListener() : base("android.view.View$OnApplyWindowInsetsListener") { }
+
+ private AndroidJavaObject onApplyWindowInsets(AndroidJavaObject view, AndroidJavaObject windowInsets)
+ {
+ using (var cutout = windowInsets.Call<AndroidJavaObject>("getDisplayCutout"))
+ {
+ if (cutout == null)
+ {
+ lock (m_safeInsetLock)
+ {
+ m_safeInset.left = 0;
+ m_safeInset.top = 0;
+ m_safeInset.right = 0;
+ m_safeInset.bottom = 0;
+ }
+ }
+ else
+ {
+ lock (m_safeInsetLock)
+ {
+ m_safeInset.left = cutout.Call<int>("getSafeInsetLeft");
+ m_safeInset.top = cutout.Call<int>("getSafeInsetTop");
+ m_safeInset.right = cutout.Call<int>("getSafeInsetRight");
+ m_safeInset.bottom = cutout.Call<int>("getSafeInsetBottom");
+ }
+ }
+ }
+
+ return view.Call<AndroidJavaObject>("onApplyWindowInsets", windowInsets);
+ }
+}
+
+public class AndroidSafeArea : MonoBehaviour
+{
+ private static bool m_insetsListenerInstalled = false;
+
+void Start()
+{
+ if (m_insetsListenerInstalled)
+ return;
+
+ using (var version = new AndroidJavaClass("android.os.Build$VERSION"))
+ {
+ // Supported on Android 9 Pie (API 28) and later
+ if (version.GetStatic<int>("SDK_INT") >= 28)
+ {
+ // Install the listener
+ using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
+ {
+ using (var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
+ {
+ using (var window = activity.Call<AndroidJavaObject>("getWindow"))
+ {
+ using (var decorView = window.Call<AndroidJavaObject>("getDecorView"))
+ {
+ var windowInsetsListener = new WindowInsetsListener();
+ windowInsetsListener.InitInsets(decorView);
+ decorView.Call("setOnApplyWindowInsetsListener", windowInsetsListener);
+ m_insetsListenerInstalled = true;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ public static Rect safeArea
+ {
+ get
+ {
+ if (!m_insetsListenerInstalled)
+ return Screen.safeArea;
+
+ // Scale in case resolution doesn't match the native one
+ float xScale = (float)Screen.width / Display.main.systemWidth;
+ float yScale = (float)Screen.height / Display.main.systemHeight;
+
+ Rect safeArea = new Rect
+ {
+ x = Mathf.Round(WindowInsetsListener.SafeInset.left * xScale),
+ width = Mathf.Round(Screen.width - (WindowInsetsListener.SafeInset.left + WindowInsetsListener.SafeInset.right) * xScale),
+ y = Mathf.Round(WindowInsetsListener.SafeInset.bottom * yScale),
+ height = Mathf.Round(Screen.height - (WindowInsetsListener.SafeInset.bottom + WindowInsetsListener.SafeInset.top) * yScale)
+ };
+
+ return safeArea;
+ }
+ }
+}