Add an preference to disable the blur effect on Android 12+

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

@@ -469,6 +469,9 @@
     <string name="preference_category_wallpaper">Wallpaper</string>
     <string name="preference_dim_wallpaper">Dim wallpaper</string>
     <string name="preference_dim_wallpaper_summary">In dark themes, darken wallpaper</string>
+    <string name="preference_blur_wallpaper">Blur wallpaper</string>
+    <string name="preference_blur_wallpaper_summary">Use a blur effect for the wallpaper</string>
+    <string name="preference_blur_wallpaper_unsupported">Not supported on this device</string>
     <string name="preference_wallpaper_summary">Choose a wallpaper</string>
     <string name="preference_screen_badges">Badges</string>
     <string name="preference_screen_badges_summary">Configure icon badges</string>

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 = 7
+internal const val SchemaVersion = 8
 
 internal fun getMigrations(context: Context): List<DataMigration<Settings>> {
     return listOf(
@@ -33,5 +33,6 @@ internal fun getMigrations(context: Context): List<DataMigration<Settings>> {
         Migration_4_5(),
         Migration_5_6(),
         Migration_6_7(),
+        Migration_7_8(),
     )
 }

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

@@ -11,6 +11,7 @@ fun createFactorySettings(context: Context): Settings {
                 .setTheme(Settings.AppearanceSettings.Theme.System)
                 .setColorScheme(Settings.AppearanceSettings.ColorScheme.Default)
                 .setDimWallpaper(false)
+                .setBlurWallpaper(true)
                 .setCustomColors(Settings.AppearanceSettings.CustomColors.newBuilder()
                     .setAdvancedMode(false)
                     .setBaseColors(DefaultCustomColorsBase)

preferences/src/main/java/de/mm20/launcher2/preferences/migrations/Migration_7_8.kt

@@ -0,0 +1,13 @@
+package de.mm20.launcher2.preferences.migrations
+
+import de.mm20.launcher2.preferences.Settings
+
+class Migration_7_8: VersionedMigration(7, 8) {
+    override suspend fun applyMigrations(builder: Settings.Builder): Settings.Builder {
+        return builder.setAppearance(
+            builder.appearance.toBuilder()
+                .setBlurWallpaper(true)
+        )
+    }
+
+}

preferences/src/main/proto/settings.proto

@@ -77,6 +77,8 @@ message Settings {
       SystemDefault = 1;
     }
     Font font = 10;
+
+    bool blur_wallpaper = 11;
   }
   AppearanceSettings appearance = 2;
 

ui/src/main/java/de/mm20/launcher2/ui/launcher/LauncherScaffoldVM.kt

@@ -2,6 +2,7 @@ package de.mm20.launcher2.ui.launcher
 
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.asLiveData
 import androidx.lifecycle.viewModelScope
 import de.mm20.launcher2.preferences.LauncherDataStore
 import kotlinx.coroutines.flow.first
@@ -47,4 +48,6 @@ class LauncherScaffoldVM : ViewModel(), KoinComponent {
         isSearchOpen.value = false
         isWidgetEditMode.value = editMode
     }
+
+    val wallpaperBlur = dataStore.data.map { it.appearance.blurWallpaper }.asLiveData()
 }

ui/src/main/java/de/mm20/launcher2/ui/launcher/PagerScaffold.kt

@@ -126,11 +126,14 @@ fun PagerScaffold(
         }
     }
 
+    val blurEnabled by viewModel.wallpaperBlur.observeAsState(false)
+
     val blurWallpaper by remember {
         derivedStateOf {
+            blurEnabled && (
                     isSearchOpen || swipeableState.progress.to == Page.Widgets && swipeableState.progress.fraction <= 0.5f ||
                             swipeableState.progress.to == Page.Search && swipeableState.progress.fraction > 0.5f ||
-                    !isWidgetsScrollZero
+                            !isWidgetsScrollZero)
         }
     }
 

ui/src/main/java/de/mm20/launcher2/ui/launcher/PullDownScaffold.kt

@@ -131,9 +131,11 @@ fun PullDownScaffold(
 
     val maxSearchBarOffset = with(density) { 128.dp.toPx() }
 
+    val blurEnabled by viewModel.wallpaperBlur.observeAsState(false)
+
     val blurWallpaper by remember {
         derivedStateOf {
-            isSearchOpen || offsetY.value > toggleSearchThreshold || widgetsScrollState.value > 0
+            blurEnabled && (isSearchOpen || offsetY.value > toggleSearchThreshold || widgetsScrollState.value > 0)
         }
     }
 

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

@@ -2,7 +2,6 @@ package de.mm20.launcher2.ui.settings.appearance
 
 import android.graphics.drawable.ColorDrawable
 import androidx.appcompat.app.AppCompatActivity
-import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.grid.GridCells
@@ -28,9 +27,9 @@ import com.google.accompanist.pager.ExperimentalPagerApi
 import com.google.accompanist.pager.HorizontalPager
 import com.google.accompanist.pager.HorizontalPagerIndicator
 import com.google.accompanist.pager.rememberPagerState
-import de.mm20.launcher2.icons.ColorLayer
 import de.mm20.launcher2.icons.StaticIconLayer
 import de.mm20.launcher2.icons.StaticLauncherIcon
+import de.mm20.launcher2.ktx.isAtLeastApiLevel
 import de.mm20.launcher2.preferences.Settings.*
 import de.mm20.launcher2.preferences.Settings.AppearanceSettings.ColorScheme
 import de.mm20.launcher2.preferences.Settings.AppearanceSettings.Theme
@@ -155,6 +154,22 @@ fun AppearanceSettingsScreen() {
                         viewModel.setDimWallpaper(it)
                     }
                 )
+                if (isAtLeastApiLevel(31)) {
+                    val isBlurSupported = remember { viewModel.isBlurAvailable(context) }
+                    val blurWallpaper by viewModel.blurWallpaper.observeAsState()
+                    SwitchPreference(
+                        title = stringResource(R.string.preference_blur_wallpaper),
+                        summary = stringResource(
+                            if (isBlurSupported) R.string.preference_blur_wallpaper_summary
+                            else R.string.preference_blur_wallpaper_unsupported
+                        ),
+                        value = blurWallpaper == true && isBlurSupported,
+                        onValueChanged = {
+                            viewModel.setBlurWallpaper(it)
+                        },
+                        enabled = isBlurSupported
+                    )
+                }
             }
             PreferenceCategory(stringResource(R.string.preference_category_icons)) {
                 val iconShape by viewModel.iconShape.observeAsState(IconSettings.IconShape.PlatformDefault)

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

@@ -1,10 +1,14 @@
 package de.mm20.launcher2.ui.settings.appearance
 
+import android.content.Context
 import android.content.Intent
+import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.getSystemService
 import androidx.lifecycle.*
 import de.mm20.launcher2.icons.IconPack
 import de.mm20.launcher2.icons.IconRepository
+import de.mm20.launcher2.ktx.isAtLeastApiLevel
 import de.mm20.launcher2.preferences.LauncherDataStore
 import de.mm20.launcher2.preferences.Settings
 import de.mm20.launcher2.preferences.Settings.AppearanceSettings.*
@@ -85,6 +89,22 @@ class AppearanceSettingsScreenVM : ViewModel(), KoinComponent {
         }
     }
 
+    fun isBlurAvailable(context: Context): Boolean {
+        if (!isAtLeastApiLevel(31)) return false
+        return context.getSystemService<WindowManager>()?.isCrossWindowBlurEnabled == true
+    }
+
+    val blurWallpaper = dataStore.data.map { it.appearance.blurWallpaper }.asLiveData()
+    fun setBlurWallpaper(blurWallpaper: Boolean) {
+        viewModelScope.launch {
+            dataStore.updateData {
+                it.toBuilder()
+                    .setAppearance(it.appearance.toBuilder().setBlurWallpaper(blurWallpaper))
+                    .build()
+            }
+        }
+    }
+
     fun openWallpaperChooser(context: AppCompatActivity) {
         context.startActivity(Intent.createChooser(Intent(Intent.ACTION_SET_WALLPAPER), null))
     }