Added ability for user to change chapter cache size

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

@@ -51,6 +51,7 @@ sealed class Preference {
             val value: Int,
             val min: Int = 0,
             val max: Int,
+            val steps: Int = 0,
             override val title: String = "",
             override val subtitle: String? = null,
             override val icon: ImageVector? = null,

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

@@ -83,6 +83,7 @@ internal fun PreferenceItem(
                     label = item.title,
                     min = item.min,
                     max = item.max,
+                    steps = item.steps,
                     value = item.value,
                     valueText = item.subtitle.takeUnless { it.isNullOrEmpty() } ?: item.value.toString(),
                     onChange = {

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

@@ -252,9 +252,12 @@ object SettingsDataScreen : SearchableSettings {
         val scope = rememberCoroutineScope()
         val libraryPreferences = remember { Injekt.get<LibraryPreferences>() }
 
+        val chapterCacheSizePref = libraryPreferences.chapterCacheSize()
+
         val chapterCache = remember { Injekt.get<ChapterCache>() }
         var cacheReadableSizeSema by remember { mutableIntStateOf(0) }
         val cacheReadableSize = remember(cacheReadableSizeSema) { chapterCache.readableSize }
+        val chapterCacheSize by chapterCacheSizePref.collectAsState()
 
         return Preference.PreferenceGroup(
             title = stringResource(MR.strings.pref_storage_usage),
@@ -289,6 +292,18 @@ object SettingsDataScreen : SearchableSettings {
                         }
                     },
                 ),
+                Preference.PreferenceItem.SliderPreference(
+                    value = chapterCacheSize,
+                    title = stringResource(MR.strings.pref_chapter_cache_size),
+                    subtitle = stringResource(MR.strings.chapter_cache_size, chapterCacheSize),
+                    min = LibraryPreferences.CHAPTER_CACHE_SIZE_MIN,
+                    max = LibraryPreferences.CHAPTER_CACHE_SIZE_MAX,
+                    steps = 7,
+                    onValueChanged = {
+                        chapterCacheSizePref.set(it)
+                        true
+                    },
+                ),
                 Preference.PreferenceItem.SwitchPreference(
                     pref = libraryPreferences.autoClearChapterCache(),
                     title = stringResource(MR.strings.pref_auto_clear_chapter_cache),

app/src/main/java/eu/kanade/tachiyomi/data/cache/ChapterCache.kt

@@ -14,6 +14,9 @@ import okio.buffer
 import okio.sink
 import tachiyomi.core.util.system.logcat
 import tachiyomi.domain.chapter.model.Chapter
+import tachiyomi.domain.library.service.LibraryPreferences
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
 import java.io.File
 import java.io.IOException
 
@@ -30,12 +33,14 @@ class ChapterCache(
     private val json: Json,
 ) {
 
+    val libraryPreferences = Injekt.get<LibraryPreferences>()
+
     /** Cache class used for cache management. */
     private val diskCache = DiskLruCache.open(
         File(context.cacheDir, "chapter_disk_cache"),
         PARAMETER_APP_VERSION,
         PARAMETER_VALUE_COUNT,
-        PARAMETER_CACHE_SIZE,
+        libraryPreferences.chapterCacheSize().get().toLong() * 1024 * 1024,
     )
 
     /**
@@ -160,7 +165,13 @@ class ChapterCache(
         }
     }
 
+    /**
+     * Clear all files from cache.
+     *
+     * @return number of files deleted.
+     */
     fun clear(): Int {
+        diskCache.maxSize = libraryPreferences.chapterCacheSize().get().toLong() * 1024 * 1024
         var deletedFiles = 0
         cacheDir.listFiles()?.forEach {
             if (removeFileFromCache(it.name)) {
@@ -203,6 +214,3 @@ private const val PARAMETER_APP_VERSION = 1
 
 /** The number of values per cache entry. Must be positive.  */
 private const val PARAMETER_VALUE_COUNT = 1
-
-/** The maximum number of bytes this cache should use to store.  */
-private const val PARAMETER_CACHE_SIZE = 100L * 1024 * 1024

domain/src/main/java/tachiyomi/domain/library/service/LibraryPreferences.kt

@@ -190,6 +190,8 @@ class LibraryPreferences(
         )
     }
 
+    fun chapterCacheSize() = preferenceStore.getInt("chapter_cache_size", 100)
+
     fun autoClearChapterCache() = preferenceStore.getBoolean("auto_clear_chapter_cache", false)
 
     // endregion
@@ -224,5 +226,8 @@ class LibraryPreferences(
         const val MANGA_HAS_UNREAD = "manga_fully_read"
         const val MANGA_NON_READ = "manga_started"
         const val MANGA_OUTSIDE_RELEASE_PERIOD = "manga_outside_release_period"
+
+        const val CHAPTER_CACHE_SIZE_MIN = 100
+        const val CHAPTER_CACHE_SIZE_MAX = 500
     }
 }

i18n/src/commonMain/resources/MR/base/strings.xml

@@ -539,6 +539,8 @@
     <string name="used_cache">Used: %1$s</string>
     <string name="cache_deleted">Cache cleared, %1$d files deleted</string>
     <string name="cache_delete_error">Error occurred while clearing</string>
+    <string name="pref_chapter_cache_size">Chapter cache size</string>
+    <string name="chapter_cache_size">%1$s MB</string>
     <string name="pref_auto_clear_chapter_cache">Clear chapter cache on app launch</string>
 
     <!-- Sync section -->

presentation-core/src/main/java/tachiyomi/presentation/core/components/SettingsItems.kt

@@ -161,6 +161,7 @@ fun SliderItem(
     onChange: (Int) -> Unit,
     max: Int,
     min: Int = 0,
+    steps: Int = 0,
 ) {
     val haptic = LocalHapticFeedback.current
 
@@ -193,7 +194,7 @@ fun SliderItem(
             },
             modifier = Modifier.weight(1.5f),
             valueRange = min.toFloat()..max.toFloat(),
-            steps = max - min,
+            steps = if (steps > 0) steps else max - min,
         )
     }
 }