Added flag to use Material You Compat on Android 12+

Signed-off-by: Guillermo Villafuerte <gvillafu@comunidad.unam.mx>

app/ui/src/main/java/de/mm20/launcher2/ui/settings/appearance/AppearanceSettingsScreen.kt

@@ -17,6 +17,7 @@ import de.mm20.launcher2.ui.component.preferences.ListPreference
 import de.mm20.launcher2.ui.component.preferences.Preference
 import de.mm20.launcher2.ui.component.preferences.PreferenceCategory
 import de.mm20.launcher2.ui.component.preferences.PreferenceScreen
+import de.mm20.launcher2.ui.component.preferences.SwitchPreference
 import de.mm20.launcher2.ui.component.preferences.value
 import de.mm20.launcher2.ui.locals.LocalNavController
 import de.mm20.launcher2.ui.theme.getTypography
@@ -51,6 +52,15 @@ fun AppearanceSettingsScreen() {
                         navController?.navigate("settings/appearance/themes")
                     }
                 )
+                val compatMode by viewModel.compatMode.collectAsState()
+                SwitchPreference(
+                    title = stringResource(id = R.string.preference_force_compat_system_colors),
+                    summary = stringResource(id = R.string.preference_force_compat_system_colors_summary),
+                    value = compatMode,
+                    onValueChanged = {
+                        viewModel.setCompatMode(it)
+                    }
+                )
                 val font by viewModel.font.collectAsState()
                 ListPreference(
                     title = stringResource(R.string.preference_font),

app/ui/src/main/java/de/mm20/launcher2/ui/settings/appearance/AppearanceSettingsScreenVM.kt

@@ -47,6 +47,19 @@ class AppearanceSettingsScreenVM : ViewModel(), KoinComponent {
         }
         .stateIn(viewModelScope, SharingStarted.WhileSubscribed(), null)
 
+    val compatMode = dataStore.data.map {
+        it.appearance.forceCompatModeSystemColors
+    }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(), false)
+
+    fun setCompatMode(enabled: Boolean) {
+        viewModelScope.launch {
+            dataStore.updateData {
+                it.toBuilder()
+                    .setAppearance(it.appearance.toBuilder().setForceCompatModeSystemColors(enabled))
+                    .build()
+            }
+        }
+    }
 
     val font = dataStore.data.map { it.appearance.font }
         .stateIn(viewModelScope, SharingStarted.WhileSubscribed(), null)

app/ui/src/main/java/de/mm20/launcher2/ui/theme/colorscheme/Custom.kt

@@ -3,11 +3,14 @@ package de.mm20.launcher2.ui.theme.colorscheme
 import android.os.Build
 import androidx.compose.material3.ColorScheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.platform.LocalContext
 import androidx.core.content.ContextCompat
+import androidx.datastore.core.DataStore
 import de.mm20.launcher2.preferences.Settings
 import de.mm20.launcher2.themes.CorePalette
 import de.mm20.launcher2.themes.DefaultDarkColorScheme
@@ -18,6 +21,8 @@ import de.mm20.launcher2.themes.Theme
 import de.mm20.launcher2.themes.get
 import de.mm20.launcher2.themes.merge
 import de.mm20.launcher2.ui.locals.LocalWallpaperColors
+import kotlinx.coroutines.flow.map
+import org.koin.androidx.compose.inject
 
 @Composable
 fun lightColorSchemeOf(theme: Theme): ColorScheme {
@@ -77,8 +82,13 @@ fun colorSchemeOf(colorScheme: FullColorScheme, corePalette: PartialCorePalette)
 
 @Composable
 fun systemCorePalette(): CorePalette<Int> {
+    val dataStore: DataStore<Settings> by inject()
+    val compatMode by remember {
+        dataStore.data.map { it.appearance.forceCompatModeSystemColors }
+    }.collectAsState(false)
+
+    if (Build.VERSION.SDK_INT >= 31 && !compatMode) {
         val context = LocalContext.current
-    if (Build.VERSION.SDK_INT >= 31) {
         return CorePalette(
             primary = ContextCompat.getColor(context, android.R.color.system_accent1_500),
             secondary = ContextCompat.getColor(context, android.R.color.system_accent2_500),

core/i18n/src/main/res/values/strings.xml

@@ -447,6 +447,8 @@
     <string name="preference_colors_auto_generate">Generate from primary color</string>
     <string name="preference_category_custom_colors_light">Light color scheme</string>
     <string name="preference_category_custom_colors_dark">Dark color scheme</string>
+    <string name="preference_force_compat_system_colors">Ignore system colors</string>
+    <string name="preference_force_compat_system_colors_summary">Request color scheme via Material You Compat, if available</string>
     <string name="preference_font">Font</string>
     <string name="preference_font_system">System default</string>
     <string name="preference_screen_about">About</string>

core/preferences/src/main/java/de/mm20/launcher2/preferences/DataStore.kt

@@ -22,7 +22,7 @@ internal val Context.dataStore: LauncherDataStore by dataStore(
     }
 )
 
-internal const val SchemaVersion = 18
+internal const val SchemaVersion = 19
 
 internal fun getMigrations(context: Context): List<DataMigration<Settings>> {
     return listOf(
@@ -44,5 +44,6 @@ internal fun getMigrations(context: Context): List<DataMigration<Settings>> {
         Migration_15_16(),
         Migration_16_17(),
         Migration_17_18(),
+        Migration_18_19(),
     )
 }

core/preferences/src/main/java/de/mm20/launcher2/preferences/Defaults.kt

@@ -18,6 +18,7 @@ fun createFactorySettings(context: Context): Settings {
                 .setBlurWallpaperRadius(32)
                 .setThemeId(UUID(0L, 0L).toString())
                 .setFont(Settings.AppearanceSettings.Font.Outfit)
+                .setForceCompatModeSystemColors(false)
                 .build()
         )
         .setWeather(

core/preferences/src/main/java/de/mm20/launcher2/preferences/migrations/Migration_18_19.kt

@@ -0,0 +1,12 @@
+package de.mm20.launcher2.preferences.migrations
+
+import de.mm20.launcher2.preferences.Settings
+
+class Migration_18_19 : VersionedMigration(18, 19) {
+    override suspend fun applyMigrations(builder: Settings.Builder): Settings.Builder {
+        return builder
+            .setAppearance(builder.appearance.toBuilder()
+                .setForceCompatModeSystemColors(false)
+            )
+    }
+}

core/preferences/src/main/proto/settings.proto

@@ -90,6 +90,8 @@ message Settings {
     // UUID of the selected theme
     string theme_id = 12;
     uint32 blur_wallpaper_radius = 13;
+
+    bool force_compat_mode_system_colors = 14;
   }
   AppearanceSettings appearance = 2;