add swap screen in drawer

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/GameActivity.java

@@ -3,7 +3,6 @@ package com.panda3ds.pandroid.app;
 import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
-import android.util.Log;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
@@ -17,7 +16,7 @@ import com.panda3ds.pandroid.AlberDriver;
 import com.panda3ds.pandroid.R;
 import com.panda3ds.pandroid.app.game.AlberInputListener;
 import com.panda3ds.pandroid.app.game.DrawerFragment;
-import com.panda3ds.pandroid.app.game.EmulatorListener;
+import com.panda3ds.pandroid.app.game.EmulatorCallback;
 import com.panda3ds.pandroid.data.config.GlobalConfig;
 import com.panda3ds.pandroid.input.InputHandler;
 import com.panda3ds.pandroid.input.InputMap;
@@ -28,7 +27,7 @@ import com.panda3ds.pandroid.view.ds.DsLayoutManager;
 import com.panda3ds.pandroid.view.renderer.ConsoleRenderer;
 import com.panda3ds.pandroid.view.utils.PerformanceView;
 
-public class GameActivity extends BaseActivity implements EmulatorListener {
+public class GameActivity extends BaseActivity implements EmulatorCallback {
 	private final DrawerFragment drawerFragment = new DrawerFragment();
 	private final AlberInputListener inputListener = new AlberInputListener(this);
 	private ConsoleRenderer renderer;
@@ -113,7 +112,7 @@ public class GameActivity extends BaseActivity implements EmulatorListener {
 	}
 
 	@Override
-	public void switchDualScreenLayout() {
+	public void swapScreens() {
 		currentDsLayout = currentDsLayout + 1 < DsLayoutManager.getLayoutCount() ? currentDsLayout + 1 : 0;
 		renderer.setLayout(DsLayoutManager.createLayout(currentDsLayout));
 	}

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/game/AlberInputListener.java

@@ -11,8 +11,8 @@ import java.util.Objects;
 
 
 public class AlberInputListener implements Function<InputEvent> {
-	private final EmulatorListener emulator;
+	private final EmulatorCallback emulator;
-	public AlberInputListener(EmulatorListener emulator) { this.emulator = emulator;  }
+	public AlberInputListener(EmulatorCallback emulator) { this.emulator = emulator;  }
 
 	private final Vector2 axis = new Vector2(0.0f, 0.0f);
 
@@ -50,7 +50,7 @@ public class AlberInputListener implements Function<InputEvent> {
 				break;
 			case CHANGE_DS_LAYOUT:
 				if (!event.isDown()){
-					emulator.switchDualScreenLayout();
+					emulator.swapScreens();
 				}
 				break;
 			default:

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/game/DrawerFragment.java

@@ -14,7 +14,6 @@ import androidx.appcompat.widget.AppCompatTextView;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.Fragment;
 import android.content.pm.ActivityInfo;
-import android.content.res.Configuration;
 
 import com.google.android.material.navigation.NavigationView;
 import com.panda3ds.pandroid.AlberDriver;
@@ -25,10 +24,12 @@ import com.panda3ds.pandroid.view.gamesgrid.GameIconView;
 
 public class DrawerFragment extends Fragment implements DrawerLayout.DrawerListener, NavigationView.OnNavigationItemSelectedListener {
     private DrawerLayout drawerContainer;
+    private EmulatorCallback emulator;
 
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        emulator = ((EmulatorCallback) requireActivity());
         drawerContainer = requireActivity().findViewById(R.id.drawer_container);
         drawerContainer.removeDrawerListener(this);
         drawerContainer.addDrawerListener(this);
@@ -113,6 +114,9 @@ public class DrawerFragment extends Fragment implements DrawerLayout.DrawerListe
         int id = item.getItemId();
         if (id == R.id.resume) {
             close();
+        } else if (id == R.id.ds_switch) {
+            emulator.swapScreens();
+            close();
         } else if (id == R.id.exit) {
             requireActivity().finish();
         } else if (id == R.id.lua_script) {

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/game/EmulatorCallback.java

@@ -0,0 +1,7 @@
+package com.panda3ds.pandroid.app.game;
+
+public interface EmulatorCallback {
+    void onBackPressed();
+
+    void swapScreens();
+}

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/game/EmulatorListener.java

@@ -1,7 +0,0 @@
-package com.panda3ds.pandroid.app.game;
-
-public interface EmulatorListener {
-    void onBackPressed();
-
-    void switchDualScreenLayout();
-}

src/pandroid/app/src/main/res/drawable/ic_switch_screen.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M21,3L3,3c-1.11,0 -2,0.89 -2,2v14c0,1.11 0.89,2 2,2h18c1.11,0 2,-0.89 2,-2L23,5c0,-1.11 -0.89,-2 -2,-2zM21,19.02L3,19.02L3,4.98h18v14.04zM10,12L8,12l4,-4 4,4h-2v4h-4v-4z"/>
+</vector>

src/pandroid/app/src/main/res/menu/game_drawer.xml

@@ -10,6 +10,10 @@
                 android:id="@+id/resume"
                 android:icon="@drawable/ic_shortcut"
                 android:title="@string/resume" />
+            <item
+                android:id="@+id/ds_switch"
+                android:icon="@drawable/ic_switch_screen"
+                android:title="@string/swap_screen"/>
             <item
                 android:id="@+id/exit"
                 android:icon="@drawable/ic_exit"

src/pandroid/app/src/main/res/values/strings.xml

@@ -74,4 +74,5 @@
     <string name="dual_screen_layouts">Dual Screen layouts</string>
     <string name="dual_screen_layouts_summary">Change layout of console screens.</string>
     <string name="click_to_change">Click to change</string>
+    <string name="swap_screen">Swap screen</string>
 </resources>

src/pandroid/app/src/main/res/xml/input_map_preferences.xml

@@ -134,7 +134,7 @@
             app:iconSpaceReserved="false"/>
 
         <Preference
-            app:title="Switch dual screen layout"
+            app:title="@string/swap_screen"
             app:key="CHANGE_DS_LAYOUT"
             app:summary="none"
             app:iconSpaceReserved="false"/>