[WIP] Compose appearance preference screen

ui/src/main/java/de/mm20/launcher2/ui/activity/ComposeActivity.kt

@@ -25,10 +25,7 @@ import de.mm20.launcher2.ui.locals.LocalColorScheme
 import de.mm20.launcher2.ui.locals.LocalNavController
 import de.mm20.launcher2.ui.locals.LocalWindowSize
 import de.mm20.launcher2.ui.screens.LauncherMainScreen
-import de.mm20.launcher2.ui.screens.settings.SettingsAboutScreen
+import de.mm20.launcher2.ui.screens.settings.*
-import de.mm20.launcher2.ui.screens.settings.SettingsBadgesScreen
-import de.mm20.launcher2.ui.screens.settings.SettingsLicenseScreen
-import de.mm20.launcher2.ui.screens.settings.SettingsMainScreen
 import de.mm20.launcher2.ui.theme.WallpaperColors
 import de.mm20.launcher2.ui.theme.colors.DefaultColorScheme
 import de.mm20.launcher2.ui.theme.colors.WallpaperColorScheme
@@ -110,6 +107,9 @@ class ComposeActivity : AppCompatActivity() {
                             composable("settings/badges") {
                                 SettingsBadgesScreen()
                             }
+                            composable("settings/appearance") {
+                                SettingsAppearanceScreen()
+                            }
                             composable(
                                 "settings/license?library={libraryName}",
                                 arguments = listOf(navArgument("libraryName") {

ui/src/main/java/de/mm20/launcher2/ui/screens/settings/SettingsAppearanceScreen.kt

@@ -0,0 +1,47 @@
+package de.mm20.launcher2.ui.screens.settings
+
+import androidx.compose.runtime.*
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import de.mm20.launcher2.preferences.Settings
+import de.mm20.launcher2.preferences.dataStore
+import de.mm20.launcher2.ui.R
+import de.mm20.launcher2.ui.component.preferences.ListPreference
+import de.mm20.launcher2.ui.component.preferences.PreferenceCategory
+import de.mm20.launcher2.ui.component.preferences.PreferenceScreen
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.launch
+
+@Composable
+fun SettingsAppearanceScreen() {
+    val context = LocalContext.current
+    val dataStore = context.dataStore
+    val scope = rememberCoroutineScope()
+    PreferenceScreen(title = stringResource(id = R.string.preference_screen_appearance)) {
+        item {
+            PreferenceCategory {
+                val theme by remember {
+                    dataStore.data.map { it.appearance.theme }
+                }.collectAsState(initial = Settings.AppearanceSettings.Theme.System)
+                ListPreference(
+                    title = stringResource(id = R.string.preference_theme),
+                    items = listOf(
+                        stringResource(id = R.string.preference_theme_system) to Settings.AppearanceSettings.Theme.System,
+                        stringResource(id = R.string.preference_theme_light) to Settings.AppearanceSettings.Theme.Light,
+                        stringResource(id = R.string.preference_theme_dark) to Settings.AppearanceSettings.Theme.Dark,
+                    ),
+                    value = theme,
+                    onValueChanged = { newValue ->
+                        scope.launch {
+                            dataStore.updateData {
+                                it.toBuilder()
+                                    .setAppearance(it.appearance.toBuilder().setTheme(newValue))
+                                    .build()
+                            }
+                        }
+                    }
+                )
+            }
+        }
+    }
+}

ui/src/main/java/de/mm20/launcher2/ui/screens/settings/SettingsMainScreen.kt

@@ -22,7 +22,10 @@ fun SettingsMainScreen() {
                 Preference(
                     icon = Icons.Rounded.Palette,
                     title = stringResource(id = R.string.preference_screen_appearance),
-                    summary = stringResource(id = R.string.preference_screen_appearance_summary)
+                    summary = stringResource(id = R.string.preference_screen_appearance_summary),
+                    onClick = {
+                        navController?.navigate("settings/appearance")
+                    }
                 )
                 Preference(
                     icon = Icons.Rounded.Search,