Merged in AuahDark/love-android-sdl2/love113-safearea (pull request #17)

Implement `love.window.getSafeArea` for Android (Java changes)

love/src/main/java/org/love2d/android/GameActivity.java

@@ -36,6 +36,10 @@ public class GameActivity extends SDLActivity {
     public static final int EXTERNAL_STORAGE_REQUEST_CODE = 1;
     private static boolean immersiveActive = false;
     private static boolean mustCacheArchive = false;
+    public int safeAreaTop = 0;
+    public int safeAreaLeft = 0;
+    public int safeAreaBottom = 0;
+    public int safeAreaRight = 0;
 
     @Override
     protected String[] getLibraries() {
@@ -66,6 +70,10 @@ public class GameActivity extends SDLActivity {
 
         super.onCreate(savedInstanceState);
         getWindowManager().getDefaultDisplay().getMetrics(metrics);
+
+        if (android.os.Build.VERSION.SDK_INT >= 28) {
+            getWindow().getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
+        }
     }
 
     @Override
@@ -94,6 +102,8 @@ public class GameActivity extends SDLActivity {
                 } else {
                     gamePath = game.getPath();
                 }
+            // FIXME: Add support for "content://" URI, which is mandatory in Android Nougat
+            // as using "file://" protocol in that (and later) version is forbidden!
             } else {
                 Log.e("GameActivity", "Unsupported scheme: '" + game.getScheme() + "'.");
 
@@ -171,13 +181,19 @@ public class GameActivity extends SDLActivity {
         super.onResume();
 
         if (immersiveActive) {
-            getWindow().getDecorView().setSystemUiVisibility(
-                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-                            | View.SYSTEM_UI_FLAG_FULLSCREEN
-                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+            int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+
+            if (android.os.Build.VERSION.SDK_INT >= 16) {
+                flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
+                         View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
+                         View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
+                         View.SYSTEM_UI_FLAG_FULLSCREEN;
+            }
+            if (android.os.Build.VERSION.SDK_INT >= 19) {
+                flags |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
+            }
+
+            getWindow().getDecorView().setSystemUiVisibility(flags);
         }
     }
 
@@ -199,17 +215,22 @@ public class GameActivity extends SDLActivity {
                 public void run() {
                     synchronized (lock) {
                         if (immersive_enabled) {
+                            int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+
+                            if (android.os.Build.VERSION.SDK_INT >= 16) {
+                                flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
+                                         View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
+                                         View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
+                                         View.SYSTEM_UI_FLAG_FULLSCREEN;
+                            }
+                            if (android.os.Build.VERSION.SDK_INT >= 19) {
+                                flags |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
+                            }
+                            getWindow().getDecorView().setSystemUiVisibility(flags);
+                        } else if (android.os.Build.VERSION.SDK_INT >= 16) {
                             getWindow().getDecorView().setSystemUiVisibility(
-                                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-                                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-                                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-                                            | View.SYSTEM_UI_FLAG_FULLSCREEN
-                                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
-                        } else {
-                            getWindow().getDecorView().setSystemUiVisibility(
-                                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
+                                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                             );
                         }
 
@@ -391,4 +412,21 @@ public class GameActivity extends SDLActivity {
 
         return ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
     }
+
+    @Keep
+    public boolean initializeSafeArea() {
+        if (android.os.Build.VERSION.SDK_INT >= 28) {
+            DisplayCutout cutout = getWindow().getDecorView().getRootWindowInsets().getDisplayCutout();
+
+            if (cutout != null) {
+                safeAreaTop = cutout.getSafeInsetTop();
+                safeAreaLeft = cutout.getSafeInsetLeft();
+                safeAreaBottom = cutout.getSafeInsetBottom();
+                safeAreaRight = cutout.getSafeInsetRight();
+                return true;
+            }
+        }
+
+        return false;
+    }
 }