Fix RegionBitmapDecode usage

app/src/main/kotlin/org/koitharu/kotatsu/core/AppModule.kt

@@ -28,7 +28,6 @@ import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.browser.cloudflare.CaptchaNotifier
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.image.AvifImageDecoder
-import org.koitharu.kotatsu.core.image.RegionBitmapDecoder
 import org.koitharu.kotatsu.core.network.MangaHttpClient
 import org.koitharu.kotatsu.core.network.imageproxy.ImageProxyInterceptor
 import org.koitharu.kotatsu.core.os.AppShortcutManager
@@ -82,9 +81,7 @@ interface AppModule {
 		@Singleton
 		fun provideMangaDatabase(
 			@ApplicationContext context: Context,
-		): MangaDatabase {
-			return MangaDatabase(context)
-		}
+		): MangaDatabase = MangaDatabase(context)
 
 		@Provides
 		@Singleton
@@ -122,7 +119,6 @@ interface AppModule {
 						.add(SvgDecoder.Factory())
 						.add(CbzFetcher.Factory())
 						.add(AvifImageDecoder.Factory())
-						.add(RegionBitmapDecoder.Factory())
 						.add(FaviconFetcher.Factory(context, okHttpClientLazy, mangaRepositoryFactory))
 						.add(MangaPageKeyer())
 						.add(pageFetcherFactory)

app/src/main/kotlin/org/koitharu/kotatsu/core/image/RegionBitmapDecoder.kt

@@ -129,7 +129,7 @@ class RegionBitmapDecoder(
 		inPreferredConfig = config
 	}
 
-	class Factory : Decoder.Factory {
+	object Factory : Decoder.Factory {
 
 		private val parallelismLock = Semaphore(DEFAULT_PARALLELISM)
 
@@ -137,11 +137,7 @@ class RegionBitmapDecoder(
 			result: SourceResult,
 			options: Options,
 			imageLoader: ImageLoader
-		): Decoder? = if (options.parameters.value<Boolean>(PARAM_REGION) == true) {
-			RegionBitmapDecoder(result.source, options, parallelismLock)
-		} else {
-			null
-		}
+		): Decoder = RegionBitmapDecoder(result.source, options, parallelismLock)
 
 		override fun equals(other: Any?) = other is Factory
 
@@ -151,7 +147,6 @@ class RegionBitmapDecoder(
 	companion object {
 
 		const val PARAM_SCROLL = "scroll"
-		const val PARAM_REGION = "region"
 		const val SCROLL_UNDEFINED = -1
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Coil.kt

@@ -63,7 +63,7 @@ fun ImageRequest.Builder.indicator(indicators: List<BaseProgressIndicator<*>>):
 
 fun ImageRequest.Builder.decodeRegion(
 	scroll: Int = RegionBitmapDecoder.SCROLL_UNDEFINED,
-): ImageRequest.Builder = setParameter(RegionBitmapDecoder.PARAM_REGION, true)
+): ImageRequest.Builder = decoderFactory(RegionBitmapDecoder.Factory)
 	.setParameter(RegionBitmapDecoder.PARAM_SCROLL, scroll)
 
 @Suppress("SpellCheckingInspection")