Render below status bar in portrait on devices with a display cutout

app/src/main/java/app/grapheneos/pdfviewer/ktx/View.kt

@@ -1,20 +1,44 @@
 package app.grapheneos.pdfviewer.ktx
 
+import android.content.res.Configuration
+import android.os.Build
 import android.view.View
 import android.view.Window
+import android.view.WindowInsetsController
 import androidx.core.view.WindowCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsControllerCompat
 
 private val systemBars = WindowInsetsCompat.Type.statusBars()
 
 fun View.hideSystemUi(window: Window) {
-    val controller = WindowCompat.getInsetsController(window, this)
-    controller.systemBarsBehavior =
-        WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
-    controller.hide(systemBars)
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+        val controller = window.insetsController
+        controller?.systemBarsBehavior =
+            WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+        if (window.decorView.rootWindowInsets.displayCutout == null) {
+            controller?.hide(systemBars)
+        } else if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+            controller?.hide(systemBars)
+        }
+    } else {
+        val controller = WindowCompat.getInsetsController(window, this)
+        controller.systemBarsBehavior =
+            WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+        if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) && (window.decorView.rootWindowInsets.displayCutout == null)) {
+            controller.hide(systemBars)
+        } else if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+            controller.hide(systemBars)
+        }
+    }
 }
 
 fun View.showSystemUi(window: Window) {
-    WindowCompat.getInsetsController(window, this).show(systemBars)
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+        val controller = window.insetsController
+        controller?.show(systemBars)
+    } else {
+        val controller = WindowCompat.getInsetsController(window, this)
+        controller.show(systemBars)
+    }
 }