Add setting to disable overlay while keeping BLE transmission active

app/src/main/java/com/spop/poverlay/ConfigurationPage.kt

@@ -47,12 +47,16 @@ fun ConfigurationPage(viewModel: ConfigurationViewModel) {
                     viewModel.bleFtmsDeviceName.collectAsStateWithLifecycle(
                             initialValue = "Grupetto FTMS"
                     )
+            val showOverlay by
+                    viewModel.showOverlay.collectAsStateWithLifecycle(initialValue = true)
             StartServicePage(
                     timerShownWhenMinimized,
                     viewModel::onShowTimerWhenMinimizedClicked,
                     bleTxEnabled,
                     viewModel::onBleTxEnabledClicked,
                     bleFtmsDeviceName,
+                    showOverlay,
+                    viewModel::onShowOverlayClicked,
                     viewModel::onStartServiceClicked,
                     viewModel::onRestartClicked,
                     viewModel::onClickedRelease,
@@ -69,6 +73,8 @@ private fun StartServicePage(
         bleTxEnabled: Boolean,
         onBleTxEnabledToggled: (Boolean) -> Unit,
         bleFtmsDeviceName: String,
+        showOverlay: Boolean,
+        onShowOverlayToggled: (Boolean) -> Unit,
         onClickedStartOverlay: () -> Unit,
         onClickedRestartApp: () -> Unit,
         onClickedRelease: (Release) -> Unit,
@@ -90,7 +96,7 @@ private fun StartServicePage(
             onClick = onClickedStartOverlay,
     ) {
         Text(
-                text = "Click here to start the overlay",
+                text = if (showOverlay) "Click here to start the overlay" else "Start service (BLE only)",
                 fontSize = 30.sp,
                 fontFamily = LatoFontFamily,
                 fontWeight = FontWeight.Bold,
@@ -104,6 +110,13 @@ private fun StartServicePage(
                 onCheckedChange = onTimerShownWhenMinimizedToggled
         )
     }
+    Row(verticalAlignment = Alignment.CenterVertically) {
+        Text(text = "Show overlay on screen?", fontSize = 20.sp)
+        Checkbox(
+                checked = showOverlay,
+                onCheckedChange = onShowOverlayToggled
+        )
+    }
     // BLE FTMS Settings
     Row(verticalAlignment = Alignment.CenterVertically) {
         Text(
@@ -125,6 +138,15 @@ private fun StartServicePage(
                     fontSize = 14.sp
             )
         }
+
+        if (!showOverlay) {
+            Spacer(modifier = Modifier.height(4.dp))
+            Text(
+                    text = "ℹ️ BLE transmission is active without overlay display",
+                    fontSize = 14.sp,
+                    color = Color.Blue
+            )
+        }
     } else {
         Spacer(modifier = Modifier.height(8.dp))
 

app/src/main/java/com/spop/poverlay/ConfigurationRepository.kt

@@ -12,8 +12,9 @@ class ConfigurationRepository(context: Context, lifecycleOwner: LifecycleOwner)
     enum class Preferences(val key: String) {
         ShowTimerWhenMinimized("showTimerWhenMinimized"),
         BleTxEnabled("bleTxEnabled"),
-    BleFtmsDeviceName("bleFtmsDeviceName"),
-    SerialNumber("serialNumber")
+        BleFtmsDeviceName("bleFtmsDeviceName"),
+        SerialNumber("serialNumber"),
+        ShowOverlay("showOverlay")
     }
 
     companion object {
@@ -28,11 +29,13 @@ class ConfigurationRepository(context: Context, lifecycleOwner: LifecycleOwner)
     private val mutableBleTxEnabled = MutableStateFlow(true)
     private val mutableBleFtmsDeviceName = MutableStateFlow("Grupetto FTMS")
     private val mutableSerialNumber = MutableStateFlow("")
+    private val mutableShowOverlay = MutableStateFlow(true)
 
     val showTimerWhenMinimized = mutableShowTimerWhenMinimized
     val bleTxEnabled = mutableBleTxEnabled
     val bleFtmsDeviceName = mutableBleFtmsDeviceName
     val serialNumber = mutableSerialNumber
+    val showOverlay = mutableShowOverlay
 
     private val sharedPreferences: SharedPreferences
 
@@ -87,6 +90,13 @@ class ConfigurationRepository(context: Context, lifecycleOwner: LifecycleOwner)
         }
     }
 
+    fun setShowOverlay(show: Boolean) {
+        mutableShowOverlay.value = show
+        sharedPreferences.edit {
+            putBoolean(Preferences.ShowOverlay.key, show)
+        }
+    }
+
     private fun generateSerialHex(): String {
         val value = kotlin.random.Random.nextInt(0x10000)
         return value.toString(16).padStart(4, '0').uppercase()
@@ -105,6 +115,10 @@ class ConfigurationRepository(context: Context, lifecycleOwner: LifecycleOwner)
             sharedPreferences
                 .getString(Preferences.BleFtmsDeviceName.key, "Grupetto FTMS") ?: "Grupetto FTMS"
 
+        mutableShowOverlay.value =
+            sharedPreferences
+                .getBoolean(Preferences.ShowOverlay.key, true)
+
         // Ensure a serial number exists and keep it in memory
         val existingSerial = sharedPreferences.getString(Preferences.SerialNumber.key, null)
         val ensuredSerial = if (existingSerial.isNullOrEmpty()) {

app/src/main/java/com/spop/poverlay/ConfigurationViewModel.kt

@@ -42,6 +42,9 @@ class ConfigurationViewModel(
     val bleFtmsDeviceName
         get() = configurationRepository.bleFtmsDeviceName
 
+    val showOverlay
+        get() = configurationRepository.showOverlay
+
     private val bleServer = (application as GrupettoApplication).bleServer
 
     init {
@@ -63,6 +66,10 @@ class ConfigurationViewModel(
         configurationRepository.setShowTimerWhenMinimized(isChecked)
     }
 
+    fun onShowOverlayClicked(isChecked: Boolean) {
+        configurationRepository.setShowOverlay(isChecked)
+    }
+
     fun onBleTxEnabledClicked(isChecked: Boolean) {
         configurationRepository.setBleTxEnabled(isChecked)
         if (isChecked) {

app/src/main/java/com/spop/poverlay/overlay/OverlayService.kt

@@ -86,6 +86,14 @@ class OverlayService : LifecycleEnabledService() {
     }
 
     private fun buildDialog() {
+        val configurationRepository = ConfigurationRepository(applicationContext, this)
+
+        // Check if overlay should be shown
+        if (!configurationRepository.showOverlay.value) {
+            // Skip overlay creation when disabled - BLE is handled by the application
+            return
+        }
+
         val wm = getSystemService(WINDOW_SERVICE) as WindowManager
         val screenSize = Size(
             resources.displayMetrics.widthPixels.toFloat(),
@@ -123,7 +131,7 @@ class OverlayService : LifecycleEnabledService() {
 
         val timerViewModel = OverlayTimerViewModel(
             application,
-            ConfigurationRepository(applicationContext, this)
+            configurationRepository
         )
         val dialogViewModel = OverlayDialogViewModel(screenSize, sensorViewModel.isMinimized)