refactor: Update seedColor usage in ReaderActivity

- Using state to update seed color when there is change
- Fix: loading seed color in case manga is late to init
- improve: change chapter's slider's text color

app/src/main/java/eu/kanade/presentation/manga/components/MangaCover.kt

@@ -51,6 +51,7 @@ enum class MangaCover(val ratio: Float) {
         alpha: Float = 1f,
         bgColor: Color? = null,
         @ColorInt tint: Int? = null,
+        /** Perform action when cover loaded, specifically generating color map */
         onCoverLoaded: ((DomainMangaCover) -> Unit)? = null,
         size: Size = Size.Normal,
         // KMK <--

app/src/main/java/eu/kanade/presentation/reader/components/ChapterNavigator.kt

@@ -83,6 +83,7 @@ fun ChapterNavigator(
     val backgroundColor = MaterialTheme.colorScheme
         .surfaceColorAtElevation(3.dp)
         .copy(alpha = if (isSystemInDarkTheme()) 0.9f else 0.95f)
+    val textColor = MaterialTheme.colorScheme.onSurface
     val buttonColor = IconButtonDefaults.filledIconButtonColors(
         containerColor = backgroundColor,
         disabledContainerColor = backgroundColor,
@@ -123,7 +124,12 @@ fun ChapterNavigator(
                         verticalAlignment = Alignment.CenterVertically,
                     ) {
                         // SY -->
-                        Text(text = currentPageText)
+                        Text(
+                            text = currentPageText,
+                            // KMK -->
+                            color = textColor,
+                            // KMK <--
+                        )
                         // SY <--
 
                         val interactionSource = remember { MutableInteractionSource() }
@@ -146,7 +152,12 @@ fun ChapterNavigator(
                             interactionSource = interactionSource,
                         )
 
-                        Text(text = totalPages.toString())
+                        Text(
+                            text = totalPages.toString(),
+                            // KMK -->
+                            color = textColor,
+                            // KMK <--
+                        )
                     }
                 }
             } else {

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

@@ -100,7 +100,7 @@ object MangaCoverMetadata {
              * + [onlyDominantColor] = false
              *   - Manga doesn't have vibrant color
              */
-            options.inSampleSize = 4
+            options.inSampleSize = SUB_SAMPLE
         } else {
             /**
              * + [onlyDominantColor] = true
@@ -154,4 +154,6 @@ object MangaCoverMetadata {
         val mapColorCopy = MangaCover.dominantCoverColorMap.toMap()
         preferences.coverColors().set(mapColorCopy.map { "${it.key}|${it.value.first}|${it.value.second}" }.toSet())
     }
+
+    const val SUB_SAMPLE = 4
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -125,6 +125,7 @@ import tachiyomi.core.common.util.lang.launchIO
 import tachiyomi.core.common.util.lang.launchNonCancellable
 import tachiyomi.core.common.util.lang.withUIContext
 import tachiyomi.core.common.util.system.logcat
+import tachiyomi.domain.manga.model.MangaCover
 import tachiyomi.domain.manga.model.asMangaCover
 import tachiyomi.domain.source.service.SourceManager
 import tachiyomi.i18n.MR
@@ -386,8 +387,6 @@ class ReaderActivity : BaseActivity() {
      */
     private fun initializeMenu() {
         // KMK -->
-        val seedColor = viewModel.manga?.asMangaCover()?.vibrantCoverColor?.let { ComposeColor(it) }
-
         @Composable
         fun pageNumberContent() {
             // KMK <--
@@ -407,7 +406,7 @@ class ReaderActivity : BaseActivity() {
         // KMK -->
         binding.pageNumber.setComposeContent {
             TachiyomiTheme(
-                seedColor = seedColor.takeIf { themeCoverBased }
+                seedColor = seedColorState().takeIf { themeCoverBased },
             ) {
                 pageNumberContent()
             }
@@ -688,15 +687,15 @@ class ReaderActivity : BaseActivity() {
         // KMK -->
         binding.dialogRoot.setComposeContent {
             TachiyomiTheme(
-                seedColor = seedColor.takeIf { themeCoverBased }
+                seedColor = seedColorState().takeIf { themeCoverBased },
             ) {
                 dialogRootContent()
             }
         }
 
-        val colorScheme = seedColor?.let {
+        val colorScheme = seedColorStatic()?.let {
             dynamicColorScheme(
-                seedColor = seedColor,
+                seedColor = it,
                 isDark = isNightMode(),
                 isAmoled = themeDarkAmoled,
                 style = themeCoverBasedStyle,
@@ -725,6 +724,22 @@ class ReaderActivity : BaseActivity() {
         enableExhAutoScroll()
     }
 
+    // KMK -->
+    @Composable
+    private fun seedColorState(): ComposeColor? {
+        val state by viewModel.state.collectAsState()
+        return state.manga?.asMangaCover()?.vibrantCoverColor?.let { ComposeColor(it) }
+            ?: seedColorStatic()
+    }
+
+    private fun seedColorStatic(): ComposeColor? {
+        return viewModel.manga?.asMangaCover()?.vibrantCoverColor?.let { ComposeColor(it) }
+            ?: intent.extras?.getLong("manga")?.takeIf { it > 0 }
+                ?.let { MangaCover.vibrantCoverColorMap[it] }
+                ?.let { ComposeColor(it) }
+    }
+    // KMK <--
+
     private fun enableExhAutoScroll() {
         readerPreferences.autoscrollInterval().changes()
             .combine(viewModel.state.map { it.autoScroll }.distinctUntilChanged()) { interval, enabled ->
@@ -891,15 +906,12 @@ class ReaderActivity : BaseActivity() {
      * Called from the presenter when a manga is ready. Used to instantiate the appropriate viewer.
      */
     private fun updateViewer() {
-        // KMK -->
-        val manga = viewModel.manga
-        // KMK <--
         val prevViewer = viewModel.state.value.viewer
         val newViewer = ReadingMode.toViewer(
             viewModel.getMangaReadingMode(),
             this,
             // KMK -->
-            seedColor = manga?.asMangaCover()?.vibrantCoverColor,
+            seedColor = seedColorStatic()?.toArgb(),
             // KMK <--
         )
 
@@ -929,6 +941,7 @@ class ReaderActivity : BaseActivity() {
             viewModel.state.value.lastShiftDoubleState?.let { newViewer.config.shiftDoublePage = it }
         }
 
+        val manga = viewModel.state.value.manga
         val defaultReaderType = manga?.defaultReaderType(
             manga.mangaType(sourceName = sourceManager.get(manga.source)?.name),
         )
@@ -948,7 +961,7 @@ class ReaderActivity : BaseActivity() {
         loadingIndicator = ReaderProgressIndicator(
             context = this,
             // KMK -->
-            seedColor = manga?.asMangaCover()?.vibrantCoverColor,
+            seedColor = seedColorStatic()?.toArgb(),
             // KMK <--
         )
         binding.readerContainer.addView(loadingIndicator)