Apply color config on-the-fly

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -336,7 +336,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 			return policy.isNetworkAllowed(connectivityManager)
 		}
 
-	val enhancedColors: Boolean
+	val is32BitColorsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_32BIT_COLOR, false)
 
 	fun isTipEnabled(tip: String): Boolean {

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/config/ReaderSettings.kt

@@ -5,7 +5,8 @@ import android.graphics.Bitmap
 import android.view.View
 import androidx.lifecycle.MediatorLiveData
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView.Companion.preferredBitmapConfig
+import com.davemorrissey.labs.subscaleview.decoder.SkiaImageDecoder
+import com.davemorrissey.labs.subscaleview.decoder.SkiaImageRegionDecoder
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -32,8 +33,12 @@ class ReaderSettings(
 	val colorFilter: ReaderColorFilter?
 		get() = colorFilterFlow.value?.takeUnless { it.isEmpty }
 
-	val enhancedColors: Boolean
-		get() = settings.enhancedColors
+	val bitmapConfig: Bitmap.Config
+		get() = if (settings.is32BitColorsEnabled) {
+			Bitmap.Config.ARGB_8888
+		} else {
+			Bitmap.Config.RGB_565
+		}
 
 	val isPagesNumbersEnabled: Boolean
 		get() = settings.isPagesNumbersEnabled
@@ -46,12 +51,11 @@ class ReaderSettings(
 		view.background = bg.resolve(view.context)
 	}
 
-	fun enhancedColorsMode() {
-		val modeEnabled = settings.enhancedColors
-		preferredBitmapConfig = if (modeEnabled) {
-			Bitmap.Config.ARGB_8888
-		} else {
-			Bitmap.Config.RGB_565
+	fun applyBitmapConfig(ssiv: SubsamplingScaleImageView) {
+		val config = bitmapConfig
+		if (ssiv.regionDecoderFactory.bitmapConfig != config) {
+			ssiv.regionDecoderFactory = SkiaImageRegionDecoder.Factory(config)
+			ssiv.bitmapDecoderFactory = SkiaImageDecoder.Factory(config)
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/pager/standard/PageHolder.kt

@@ -4,12 +4,10 @@ import android.annotation.SuppressLint
 import android.graphics.PointF
 import android.net.Uri
 import android.view.View
-import androidx.core.view.drawToBitmap
 import androidx.core.view.isVisible
 import androidx.lifecycle.LifecycleOwner
 import com.davemorrissey.labs.subscaleview.ImageSource
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView.Companion.preferredBitmapConfig
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.ZoomMode
@@ -48,6 +46,7 @@ open class PageHolder(
 	override fun onConfigChanged() {
 		super.onConfigChanged()
 		binding.zoomControl.isVisible = settings.isZoomControlsEnabled
+		settings.applyBitmapConfig(binding.ssiv)
 	}
 
 	@SuppressLint("SetTextI18n")
@@ -86,7 +85,6 @@ open class PageHolder(
 			binding.ssiv.height / binding.ssiv.sHeight.toFloat(),
 		)
 		binding.ssiv.colorFilter = settings.colorFilter?.toColorFilter()
-		settings.enhancedColorsMode()
 		when (settings.zoomMode) {
 			ZoomMode.FIT_CENTER -> {
 				binding.ssiv.minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/pager/webtoon/WebtoonHolder.kt

@@ -6,7 +6,6 @@ import androidx.core.view.isVisible
 import androidx.lifecycle.LifecycleOwner
 import com.davemorrissey.labs.subscaleview.ImageSource
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.davemorrissey.labs.subscaleview.decoder.SkiaPooledImageRegionDecoder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.os.NetworkState
@@ -34,12 +33,16 @@ class WebtoonHolder(
 
 	init {
 		binding.ssiv.bindToLifecycle(owner)
-		binding.ssiv.regionDecoderFactory = SkiaPooledImageRegionDecoder.Factory()
 		binding.ssiv.addOnImageEventListener(delegate)
 		bindingInfo.buttonRetry.setOnClickListener(this)
 		bindingInfo.buttonErrorDetails.setOnClickListener(this)
 	}
 
+	override fun onConfigChanged() {
+		super.onConfigChanged()
+		settings.applyBitmapConfig(binding.ssiv)
+	}
+
 	override fun onBind(data: ReaderPage) {
 		delegate.onBind(data.toMangaPage())
 	}