The .gitignore removed the entire app for some reason

.gitignore

@@ -14,4 +14,3 @@
 .externalNativeBuild
 .cxx
 local.properties
-/app/

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,29 @@
+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace 'cfpi_fpsi.eu.titan_mini_mode'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "cfpi_fpsi.eu.titan_mini_mode"
+        minSdk 24
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/main/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+    <application
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        tools:targetApi="31">
+        <!--        The Quick Settings tile.-->
+        <service android:name=".TitanMiniModeQSTileService"
+            android:exported="true"
+            android:icon="@drawable/qs_tile"
+            android:label="@string/qs_tile_label"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE"/>
+            </intent-filter>
+            <meta-data android:name="android.service.quicksettings.TOGGLEABLE_TILE"
+                android:value="true"/>
+        </service>
+    </application>
+</manifest>

app/src/main/java/cfpi_fpsi/eu/titan_mini_mode/TitanMiniModeQSTileService.java

@@ -0,0 +1,107 @@
+package cfpi_fpsi.eu.titan_mini_mode;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.graphics.Point;
+import android.service.quicksettings.Tile;
+import android.service.quicksettings.TileService;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.Display;
+import android.view.WindowManager;
+
+import java.io.IOException;
+
+public class TitanMiniModeQSTileService extends TileService {
+    SharedPreferences pref;
+    @Override
+    public void onTileAdded() {
+        super.onTileAdded();
+        pref = getBaseContext().getSharedPreferences(
+                "cfpi_fpsi.eu.titan_mini_mode.PREFERENCE_FILE_KEY", Context.MODE_PRIVATE);
+        // When the tile is first added, we save the original screen size into the preferences.
+        DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
+        SharedPreferences.Editor editor = pref.edit();
+        editor.putInt("original_screen_width", metrics.widthPixels);
+        editor.putInt("original_screen_height", metrics.heightPixels);
+        editor.commit();
+    }
+    @Override
+    public void onTileRemoved() {
+        super.onTileRemoved();
+        // When the tile is removed, we set the display size to the default.
+        Point originalScreenSize = getOriginalScreenSize();
+        setDisplaySize(originalScreenSize.x, originalScreenSize.y);
+    }
+    @Override
+    public void onStartListening() {
+        super.onStartListening();
+
+        pref = getBaseContext().getSharedPreferences(
+                "cfpi_fpsi.eu.titan_mini_mode.PREFERENCE_FILE_KEY", Context.MODE_PRIVATE);
+
+        Tile tile = getQsTile();
+        Point currentScreenSize = getCurrentScreenSize();
+        Point originalScreenSize = getOriginalScreenSize();
+
+        if (currentScreenSize.x == originalScreenSize.x
+                && currentScreenSize.y == originalScreenSize.y) {
+            tile.setState(Tile.STATE_INACTIVE);
+        } else {
+            tile.setState(Tile.STATE_ACTIVE);
+        }
+
+        tile.updateTile();
+    }
+
+    @Override
+    public void onClick() {
+        super.onClick();
+        Tile tile = getQsTile();
+        Point currentScreenSize = getCurrentScreenSize();
+        Point originalScreenSize = getOriginalScreenSize();
+
+        if (currentScreenSize.x == originalScreenSize.x &&
+                currentScreenSize.y == originalScreenSize.y) {
+            setDisplaySize(Math.round(originalScreenSize.x * 0.66), originalScreenSize.y);
+            tile.setState(Tile.STATE_ACTIVE);
+        } else {
+            setDisplaySize(originalScreenSize.x, originalScreenSize.y);
+            tile.setState(Tile.STATE_INACTIVE);
+        }
+
+        tile.updateTile();
+    }
+
+    static void setDisplaySize(long x, long y) {
+        runAsRoot("wm size " + x + "x" + y);
+    }
+
+    // https://github.com/rumplestilzken/gargoyleSettings/blob/main/app/src/main/java/com/rumplestilzken/gargoylesettings/provider/RootProvider.java
+    static void runAsRoot(String command) {
+        try {
+            Process root = Runtime.getRuntime().exec(new String[] { "su", "-c", command});
+
+            try {
+                root.waitFor();
+            } catch (InterruptedException e) {
+                Log.d("EXCEPTION", e.toString());
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private Point getOriginalScreenSize() {
+        return new Point(pref.getInt("original_screen_width", 1440),
+                pref.getInt("original_screen_height", 1440));
+    }
+    private Point getCurrentScreenSize() {
+        WindowManager wm = (WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE);
+        Display display = wm.getDefaultDisplay();
+        Point size = new Point();
+        display.getSize(size);
+        return size;
+    }
+}

app/src/main/res/drawable/qs_tile.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M12,7C6.48,7 2,9.24 2,12c0,2.24 2.94,4.13 7,4.77V20l4,-4 -4,-4v2.73c-3.15,-0.56 -5,-1.9 -5,-2.73 0,-1.06 3.04,-3 8,-3s8,1.94 8,3c0,0.73 -1.46,1.89 -4,2.53v2.05c3.53,-0.77 6,-2.53 6,-4.58 0,-2.76 -4.48,-5 -10,-5z"/>
+    
+</vector>

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

@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name">Titan Mini Mode</string>
+    <string name="qs_tile_label">Mini mode</string>
+</resources>