Setting for pre-load cover's library color

app/src/main/java/eu/kanade/domain/ui/UiPreferences.kt

@@ -29,6 +29,8 @@ class UiPreferences(
     fun themeCoverBased() = preferenceStore.getBoolean("pref_theme_cover_based_key", true)
 
     fun themeCoverBasedStyle() = preferenceStore.getEnum("pref_theme_cover_based_style_key", PaletteStyle.Vibrant)
+
+    fun preloadLibraryColor() = preferenceStore.getBoolean("pref_preload_library_color_key", true)
     // KMK <--
 
     fun relativeTime() = preferenceStore.getBoolean("relative_time_v2", true)

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAdvancedScreen.kt

@@ -33,6 +33,7 @@ import eu.kanade.domain.base.BasePreferences
 import eu.kanade.domain.extension.interactor.TrustExtension
 import eu.kanade.domain.source.service.SourcePreferences
 import eu.kanade.domain.source.service.SourcePreferences.DataSaver
+import eu.kanade.domain.ui.UiPreferences
 import eu.kanade.presentation.more.settings.Preference
 import eu.kanade.presentation.more.settings.screen.advanced.ClearDatabaseScreen
 import eu.kanade.presentation.more.settings.screen.debug.DebugInfoScreen
@@ -100,6 +101,8 @@ import uy.kohesive.injekt.api.get
 import java.io.File
 
 object SettingsAdvancedScreen : SearchableSettings {
+    @Suppress("unused")
+    private fun readResolve(): Any = SettingsAdvancedScreen
 
     @ReadOnlyComposable
     @Composable
@@ -333,6 +336,9 @@ object SettingsAdvancedScreen : SearchableSettings {
     private fun getLibraryGroup(): Preference.PreferenceGroup {
         val scope = rememberCoroutineScope()
         val context = LocalContext.current
+        // KMK -->
+        val uiPreferences = remember { Injekt.get<UiPreferences>() }
+        // KMK <--
 
         return Preference.PreferenceGroup(
             title = stringResource(MR.strings.label_library),
@@ -341,6 +347,12 @@ object SettingsAdvancedScreen : SearchableSettings {
                     title = stringResource(MR.strings.pref_refresh_library_covers),
                     onClick = { LibraryUpdateJob.startNow(context, target = LibraryUpdateJob.Target.COVERS) },
                 ),
+                // KMK -->
+                Preference.PreferenceItem.SwitchPreference(
+                    pref = uiPreferences.preloadLibraryColor(),
+                    title = "Preload library's cover color",
+                ),
+                // KMK <--
                 Preference.PreferenceItem.TextPreference(
                     title = stringResource(MR.strings.pref_reset_viewer_flags),
                     subtitle = stringResource(MR.strings.pref_reset_viewer_flags_summary),

app/src/main/java/eu/kanade/tachiyomi/data/coil/MangaCoverFetcher.kt

@@ -19,7 +19,6 @@ import eu.kanade.tachiyomi.network.await
 import eu.kanade.tachiyomi.source.online.HttpSource
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import logcat.LogPriority
 import okhttp3.CacheControl
@@ -72,9 +71,10 @@ class MangaCoverFetcher(
 ) : Fetcher {
 
     // KMK -->
-    private val fileScope by lazy { CoroutineScope(Job() + Dispatchers.IO) }
+    private val scope by lazy { CoroutineScope(Dispatchers.IO) }
     private val uiPreferences = Injekt.get<UiPreferences>()
     private val themeCoverBased = uiPreferences.themeCoverBased().get()
+    private val preloadLibraryColor = uiPreferences.preloadLibraryColor().get()
     // KMK <--
 
     private val diskCacheKey: String
@@ -351,7 +351,8 @@ class MangaCoverFetcher(
         onlyFavorite: Boolean = !themeCoverBased,
         force: Boolean = false,
     ) {
-        fileScope.launch {
+        if (!preloadLibraryColor) return
+        scope.launch {
             MangaCoverMetadata.setRatioAndColors(mangaCover, bufferedSource, ogFile, onlyFavorite, force)
         }
     }