Can't permanently disable the Home Bar, so the Safe Area must be followed :(

iOS/GBHorizontalLayout.m

@@ -11,13 +11,13 @@
     CGSize resolution = {self.resolution.height - self.cutout, self.resolution.width};
     
     CGRect screenRect = {0,};
-    screenRect.size.height = self.hasFractionalPixels? resolution.height : floor(resolution.height / 144) * 144;
+    screenRect.size.height = self.hasFractionalPixels? resolution.height : floor((resolution.height - self.homeBar) / 144) * 144;
     screenRect.size.width = screenRect.size.height / 144 * 160;
     
     double horizontalMargin, verticalMargin;
     while (true) {
         horizontalMargin = (resolution.width - screenRect.size.width) / 2;
-        verticalMargin = (resolution.height - screenRect.size.height) / 2;
+        verticalMargin = (resolution.height - self.homeBar - screenRect.size.height) / 2;
         if (horizontalMargin / self.factor < 164) {
             if (self.hasFractionalPixels) {
                 screenRect.size.width = resolution.width - 164 * self.factor * 2;
@@ -37,10 +37,10 @@
     bool drawSameBoyLogo = false;
     if (verticalMargin * 2 > screenBorderWidth * 7) {
         drawSameBoyLogo = true;
-        screenRect.origin.y = (resolution.height - screenRect.size.height - screenBorderWidth * 5) / 2;
+        screenRect.origin.y = (resolution.height - self.homeBar - screenRect.size.height - screenBorderWidth * 5) / 2;
     }
     else {
-        screenRect.origin.y = (resolution.height - screenRect.size.height) / 2;
+        screenRect.origin.y = (resolution.height - self.homeBar - screenRect.size.height) / 2;
     }
     
     self.screenRect = screenRect;

iOS/GBLayout.h

@@ -24,6 +24,7 @@
 @property (readonly) CGSize resolution;
 @property (readonly) unsigned factor;
 @property (readonly) unsigned minY;
+@property (readonly) unsigned homeBar;
 @property (readonly) unsigned cutout;
 @property (readonly) bool hasFractionalPixels;
 

iOS/GBLayout.m

@@ -21,6 +21,10 @@
                                                                 ignoreHidden:true] * _factor;
     _cutout = _minY <= 24 * _factor? 0 : _minY;
     
+    if ([UIApplication sharedApplication].windows[0].safeAreaInsets.bottom) {
+        _homeBar =  21 * _factor;
+    }
+    
     // The Plus series will scale things lossily anyway, so no need to bother with integer scale things
     // This also "catches" zoomed display modes
     _hasFractionalPixels = _factor != [UIScreen mainScreen].nativeScale;

iOS/GBViewController.m

@@ -271,10 +271,16 @@ static void rumbleCallback(GB_gameboy_t *gb, double amp)
 
 - (BOOL)prefersHomeIndicatorAutoHidden
 {
-    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
-    if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown) {
-        return false;
-    }
+    return true;
+}
+
+- (UIRectEdge)preferredScreenEdgesDeferringSystemGestures
+{
+    return UIRectEdgeTop;
+}
+
+- (BOOL)prefersStatusBarHidden
+{
     return true;
 }