Add option to hide navigation bar on home screen

app/src/main/java/de/jrpie/android/launcher/preferences/LauncherPreferences$Config.java

@@ -61,6 +61,7 @@ import eu.jonahbauer.android.preference.annotations.Preferences;
                         @Preference(name = "screen_timeout_disabled", type = boolean.class, defaultValue = "false"),
                         @Preference(name = "full_screen", type = boolean.class, defaultValue = "true"),
                         @Preference(name = "rotate_screen", type = boolean.class, defaultValue = "true"),
+                        @Preference(name = "hide_navigation_bar", type = boolean.class, defaultValue = "false"),
                 }),
                 @PreferenceGroup(name = "functionality", prefix = "settings_functionality_", suffix = "_key", value = {
                         @Preference(name = "search_auto_launch", type = boolean.class, defaultValue = "true"),

app/src/main/java/de/jrpie/android/launcher/ui/HomeActivity.kt

@@ -9,6 +9,7 @@ import android.util.DisplayMetrics
 import android.view.KeyEvent
 import android.view.MotionEvent
 import android.view.View
+import android.view.Window
 import android.window.OnBackInvokedDispatcher
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.isVisible
@@ -99,6 +100,38 @@ class HomeActivity : UIObject, AppCompatActivity() {
 
     }
 
+    override fun onWindowFocusChanged(hasFocus: Boolean) {
+        super.onWindowFocusChanged(hasFocus)
+
+        if (hasFocus && LauncherPreferences.display().hideNavigationBar()) {
+            hideNavigationBar()
+        }
+    }
+
+    @Suppress("DEPRECATION")
+    private fun hideNavigationBar() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            val windowInsetsController = window.insetsController ?: return
+            windowInsetsController.hide(android.view.WindowInsets.Type.navigationBars())
+            windowInsetsController.systemBarsBehavior =
+                android.view.WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+        } else {
+            val decorView = window.decorView
+            val uiOptions =
+                (View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY or View.SYSTEM_UI_FLAG_IMMERSIVE or View.SYSTEM_UI_FLAG_LAYOUT_STABLE)
+
+            // Try to hide the navigation bar but do not hide the status bar
+            decorView.systemUiVisibility = uiOptions
+
+            // Add listener to hide the navigation bar
+            decorView.setOnSystemUiVisibilityChangeListener { visibility ->
+                if (visibility and View.SYSTEM_UI_FLAG_FULLSCREEN == 0) {
+                    decorView.systemUiVisibility = uiOptions
+                }
+            }
+        }
+    }
+
     private fun updateSettingsFallbackButtonVisibility() {
         // If µLauncher settings can not be reached from any action bound to an enabled gesture,
         // show the fallback button.

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

@@ -137,6 +137,7 @@
         <string name="settings_display_screen_timeout_disabled_key" translatable="false">display.disable_timeout</string>
         <string name="settings_display_full_screen_key" translatable="false">display.use_full_screen</string>
         <string name="settings_display_rotate_screen_key" translatable="false">display.rotate_screen</string>
+        <string name="settings_display_hide_navigation_bar_key" translatable="false">display.hide_navigation</string>
 
         <string name="settings_enabled_gestures_double_swipe_key" translatable="false">enabled_gestures.double_actions</string>
         <string name="settings_enabled_gestures_edge_swipe_key" translatable="false">enabled_gestures.edge_actions</string>

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

@@ -155,6 +155,7 @@
     <string name="settings_display_screen_timeout_disabled">Keep screen on</string>
     <string name="settings_display_full_screen">Use full screen</string>
     <string name="settings_display_rotate_screen">Rotate screen</string>
+    <string name="settings_display_hide_navigation_bar">Hide navigation bar</string>
 
     <string name="settings_launcher_section_functionality">Functionality</string>
 

app/src/main/res/xml/preferences.xml

@@ -180,6 +180,10 @@
             android:key="@string/settings_display_screen_timeout_disabled_key"
             android:defaultValue="false"
             android:title="@string/settings_display_screen_timeout_disabled"/>
+        <SwitchPreference
+            android:key="@string/settings_display_hide_navigation_bar_key"
+            android:defaultValue="false"
+            android:title="@string/settings_display_hide_navigation_bar"/>
 
 
     </PreferenceCategory>