theme: the phone app follows the App theme setting too, so Light is light everywhere

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/GearslipApp.kt

@@ -3,7 +3,6 @@ package app.seb3thehacker.gearslip.ui
 import androidx.core.view.WindowCompat
 import androidx.compose.ui.platform.LocalView
 import androidx.compose.runtime.SideEffect
-import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.windowInsetsTopHeight
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.background
@@ -105,7 +104,7 @@ fun GearslipApp(onDisconnect: () -> Unit, onRequestCallScreening: () -> Unit) {
     // On a debug build, Home's yellow header runs up behind the status bar, whose icons then go dark.
     val debugHeader = BuildConfig.DEBUG && screen == Screen.HOME
     val view = LocalView.current
-    val darkTheme = isSystemInDarkTheme()
+    val darkTheme = gearslipDark()
     SideEffect {
         val window = (view.context as? Activity)?.window ?: return@SideEffect
         WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = debugHeader || !darkTheme

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/GearslipTheme.kt

@@ -17,9 +17,20 @@ import app.seb3thehacker.gearslip.car.theme.withTintedSurfaces
 @Composable
 fun GearslipTheme(content: @Composable () -> Unit) {
     val context = LocalContext.current
-    val dark = isSystemInDarkTheme()
+    val dark = gearslipDark()
     // The car's Dark mode setting, so the phone and the car screen stay one look.
     val darkStyle by app.seb3thehacker.gearslip.car.CarSettings.darkStyle.collectAsState()
     val scheme = (if (dark) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)).withTintedSurfaces(dark, darkStyle)
     MaterialTheme(colorScheme = scheme, content = content)
 }
+
+/** Whether the phone app is dark: the car's App theme setting, so Light means light everywhere. */
+@Composable
+fun gearslipDark(): Boolean {
+    val theme by app.seb3thehacker.gearslip.car.CarSettings.appTheme.collectAsState()
+    return when (theme) {
+        app.seb3thehacker.gearslip.car.AppTheme.PHONE -> isSystemInDarkTheme()
+        app.seb3thehacker.gearslip.car.AppTheme.LIGHT -> false
+        app.seb3thehacker.gearslip.car.AppTheme.DARK -> true
+    }
+}

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/HomeScreen.kt

@@ -21,7 +21,6 @@ import androidx.compose.foundation.layout.size
 import android.content.Context
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.ui.graphics.Color
-import androidx.compose.foundation.isSystemInDarkTheme
 import app.seb3thehacker.gearslip.car.CarSettings
 import app.seb3thehacker.gearslip.car.BluetoothAudioCheck
 import android.provider.Settings
@@ -202,7 +201,7 @@ private fun BluetoothMissingCard() {
     val context = LocalContext.current
     // Yellow, not the theme's error red: music is missing, but nothing is broken. Material has no
     // warning colour, so these are fixed amber tones for light and dark.
-    val dark = isSystemInDarkTheme()
+    val dark = gearslipDark()
     val container = if (dark) Color(0xFF4A3B00) else Color(0xFFFFE08A)
     val content = if (dark) Color(0xFFFFE08A) else Color(0xFF3A2E00)
     Spacer(Modifier.height(16.dp))