Add swipe actions for chapters (#9304)

* added chapter swipe

* Rework corner animtion

* Update i18n/src/main/res/values/strings.xml

Co-authored-by: arkon <arkon@users.noreply.github.com>

* Replace LTR/RTL with Start/End layout

* Added label to the animation so the warning will go away

* Getting rid of the swipe threshold setting

* adding disabled option, renaming stuff, other stuff?

* Getting rid of the snackbar

* Getting rid of unecessary strings

* changing enum names as requested

* Renaming Raio to Ratio (I need a better keyboard as well -__-)

* Replacing error with download icon and action

* backup

* minor cleanup

* fixing an nasty edge case

* fixing mistakes in the previous conflict

* space

* fixing bug

fixed bug where the user could dismiss already dismissed item leading to item getting stuck

* fixing lint errors

* fixing lints (hopefully)

* Added "swipe disabled" to the list of actions

* Replacing string value and moving value as requested

* replacing rest of the strings with generic ones

---------

Co-authored-by: arkon <arkon@users.noreply.github.com>

app/src/main/java/eu/kanade/presentation/manga/MangaScreen.kt

@@ -66,6 +66,7 @@ import eu.kanade.tachiyomi.util.lang.toRelativeString
 import eu.kanade.tachiyomi.util.system.copyToClipboard
 import tachiyomi.domain.chapter.model.Chapter
 import tachiyomi.domain.chapter.service.missingChaptersCount
+import tachiyomi.domain.library.service.LibraryPreferences
 import tachiyomi.domain.manga.model.Manga
 import tachiyomi.domain.source.model.StubSource
 import tachiyomi.presentation.core.components.LazyColumn
@@ -86,6 +87,8 @@ fun MangaScreen(
     dateRelativeTime: Int,
     dateFormat: DateFormat,
     isTabletUi: Boolean,
+    chapterSwipeEndAction: LibraryPreferences.ChapterSwipeAction,
+    chapterSwipeStartAction: LibraryPreferences.ChapterSwipeAction,
     onBackClicked: () -> Unit,
     onChapterClicked: (Chapter) -> Unit,
     onDownloadChapter: ((List<ChapterItem>, ChapterDownloadAction) -> Unit)?,
@@ -117,6 +120,9 @@ fun MangaScreen(
     onMarkPreviousAsReadClicked: (Chapter) -> Unit,
     onMultiDeleteClicked: (List<Chapter>) -> Unit,
 
+    // For chapter swipe
+    onChapterSwipe: (ChapterItem, LibraryPreferences.ChapterSwipeAction) -> Unit,
+
     // Chapter selection
     onChapterSelected: (ChapterItem, Boolean, Boolean, Boolean) -> Unit,
     onAllChapterSelected: (Boolean) -> Unit,
@@ -135,6 +141,8 @@ fun MangaScreen(
             snackbarHostState = snackbarHostState,
             dateRelativeTime = dateRelativeTime,
             dateFormat = dateFormat,
+            chapterSwipeEndAction = chapterSwipeEndAction,
+            chapterSwipeStartAction = chapterSwipeStartAction,
             onBackClicked = onBackClicked,
             onChapterClicked = onChapterClicked,
             onDownloadChapter = onDownloadChapter,
@@ -157,6 +165,7 @@ fun MangaScreen(
             onMultiMarkAsReadClicked = onMultiMarkAsReadClicked,
             onMarkPreviousAsReadClicked = onMarkPreviousAsReadClicked,
             onMultiDeleteClicked = onMultiDeleteClicked,
+            onChapterSwipe = onChapterSwipe,
             onChapterSelected = onChapterSelected,
             onAllChapterSelected = onAllChapterSelected,
             onInvertSelection = onInvertSelection,
@@ -166,6 +175,8 @@ fun MangaScreen(
             state = state,
             snackbarHostState = snackbarHostState,
             dateRelativeTime = dateRelativeTime,
+            chapterSwipeEndAction = chapterSwipeEndAction,
+            chapterSwipeStartAction = chapterSwipeStartAction,
             dateFormat = dateFormat,
             onBackClicked = onBackClicked,
             onChapterClicked = onChapterClicked,
@@ -189,6 +200,7 @@ fun MangaScreen(
             onMultiMarkAsReadClicked = onMultiMarkAsReadClicked,
             onMarkPreviousAsReadClicked = onMarkPreviousAsReadClicked,
             onMultiDeleteClicked = onMultiDeleteClicked,
+            onChapterSwipe = onChapterSwipe,
             onChapterSelected = onChapterSelected,
             onAllChapterSelected = onAllChapterSelected,
             onInvertSelection = onInvertSelection,
@@ -202,6 +214,8 @@ private fun MangaScreenSmallImpl(
     snackbarHostState: SnackbarHostState,
     dateRelativeTime: Int,
     dateFormat: DateFormat,
+    chapterSwipeEndAction: LibraryPreferences.ChapterSwipeAction,
+    chapterSwipeStartAction: LibraryPreferences.ChapterSwipeAction,
     onBackClicked: () -> Unit,
     onChapterClicked: (Chapter) -> Unit,
     onDownloadChapter: ((List<ChapterItem>, ChapterDownloadAction) -> Unit)?,
@@ -234,6 +248,9 @@ private fun MangaScreenSmallImpl(
     onMarkPreviousAsReadClicked: (Chapter) -> Unit,
     onMultiDeleteClicked: (List<Chapter>) -> Unit,
 
+    // For chapter swipe
+    onChapterSwipe: (ChapterItem, LibraryPreferences.ChapterSwipeAction) -> Unit,
+
     // Chapter selection
     onChapterSelected: (ChapterItem, Boolean, Boolean, Boolean) -> Unit,
     onAllChapterSelected: (Boolean) -> Unit,
@@ -404,9 +421,12 @@ private fun MangaScreenSmallImpl(
                         chapters = chapters,
                         dateRelativeTime = dateRelativeTime,
                         dateFormat = dateFormat,
+                        chapterSwipeEndAction = chapterSwipeEndAction,
+                        chapterSwipeStartAction = chapterSwipeStartAction,
                         onChapterClicked = onChapterClicked,
                         onDownloadChapter = onDownloadChapter,
                         onChapterSelected = onChapterSelected,
+                        onChapterSwipe = onChapterSwipe,
                     )
                 }
             }
@@ -420,6 +440,8 @@ fun MangaScreenLargeImpl(
     snackbarHostState: SnackbarHostState,
     dateRelativeTime: Int,
     dateFormat: DateFormat,
+    chapterSwipeEndAction: LibraryPreferences.ChapterSwipeAction,
+    chapterSwipeStartAction: LibraryPreferences.ChapterSwipeAction,
     onBackClicked: () -> Unit,
     onChapterClicked: (Chapter) -> Unit,
     onDownloadChapter: ((List<ChapterItem>, ChapterDownloadAction) -> Unit)?,
@@ -452,6 +474,9 @@ fun MangaScreenLargeImpl(
     onMarkPreviousAsReadClicked: (Chapter) -> Unit,
     onMultiDeleteClicked: (List<Chapter>) -> Unit,
 
+    // For swipe actions
+    onChapterSwipe: (ChapterItem, LibraryPreferences.ChapterSwipeAction) -> Unit,
+
     // Chapter selection
     onChapterSelected: (ChapterItem, Boolean, Boolean, Boolean) -> Unit,
     onAllChapterSelected: (Boolean) -> Unit,
@@ -616,9 +641,12 @@ fun MangaScreenLargeImpl(
                                 chapters = chapters,
                                 dateRelativeTime = dateRelativeTime,
                                 dateFormat = dateFormat,
+                                chapterSwipeEndAction = chapterSwipeEndAction,
+                                chapterSwipeStartAction = chapterSwipeStartAction,
                                 onChapterClicked = onChapterClicked,
                                 onDownloadChapter = onDownloadChapter,
                                 onChapterSelected = onChapterSelected,
+                                onChapterSwipe = onChapterSwipe,
                             )
                         }
                     }
@@ -675,9 +703,12 @@ private fun LazyListScope.sharedChapterItems(
     chapters: List<ChapterItem>,
     dateRelativeTime: Int,
     dateFormat: DateFormat,
+    chapterSwipeEndAction: LibraryPreferences.ChapterSwipeAction,
+    chapterSwipeStartAction: LibraryPreferences.ChapterSwipeAction,
     onChapterClicked: (Chapter) -> Unit,
     onDownloadChapter: ((List<ChapterItem>, ChapterDownloadAction) -> Unit)?,
     onChapterSelected: (ChapterItem, Boolean, Boolean, Boolean) -> Unit,
+    onChapterSwipe: (ChapterItem, LibraryPreferences.ChapterSwipeAction) -> Unit,
 ) {
     items(
         items = chapters,
@@ -720,6 +751,8 @@ private fun LazyListScope.sharedChapterItems(
             downloadIndicatorEnabled = chapters.fastAll { !it.selected },
             downloadStateProvider = { chapterItem.downloadState },
             downloadProgressProvider = { chapterItem.downloadProgress },
+            chapterSwipeEndAction = chapterSwipeEndAction,
+            chapterSwipeStartAction = chapterSwipeStartAction,
             onLongClick = {
                 onChapterSelected(chapterItem, !chapterItem.selected, true, true)
                 haptic.performHapticFeedback(HapticFeedbackType.LongPress)
@@ -737,6 +770,9 @@ private fun LazyListScope.sharedChapterItems(
             } else {
                 null
             },
+            onChapterSwipe = {
+                onChapterSwipe(chapterItem, it)
+            },
         )
     }
 }

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

@@ -1,21 +1,41 @@
 package eu.kanade.presentation.manga.components
 
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.background
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.sizeIn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.DismissDirection
+import androidx.compose.material.DismissValue
+import androidx.compose.material.SwipeToDismiss
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Bookmark
+import androidx.compose.material.icons.filled.BookmarkRemove
 import androidx.compose.material.icons.filled.Circle
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.Download
+import androidx.compose.material.icons.filled.FileDownloadOff
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.filled.VisibilityOff
+import androidx.compose.material.rememberDismissState
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.Icon
 import androidx.compose.material3.LocalContentColor
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ProvideTextStyle
 import androidx.compose.material3.Text
+import androidx.compose.material3.contentColorFor
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -23,6 +43,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextOverflow
@@ -30,9 +51,11 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.download.model.Download
+import tachiyomi.domain.library.service.LibraryPreferences
 import tachiyomi.presentation.core.components.material.ReadItemAlpha
 import tachiyomi.presentation.core.components.material.SecondaryItemAlpha
 import tachiyomi.presentation.core.util.selectedBackground
+import kotlin.math.min
 
 @Composable
 fun MangaChapterListItem(
@@ -47,16 +70,132 @@ fun MangaChapterListItem(
     downloadIndicatorEnabled: Boolean,
     downloadStateProvider: () -> Download.State,
     downloadProgressProvider: () -> Int,
+    chapterSwipeEndAction: LibraryPreferences.ChapterSwipeAction,
+    chapterSwipeStartAction: LibraryPreferences.ChapterSwipeAction,
     onLongClick: () -> Unit,
     onClick: () -> Unit,
     onDownloadClick: ((ChapterDownloadAction) -> Unit)?,
+    onChapterSwipe: (LibraryPreferences.ChapterSwipeAction) -> Unit,
 ) {
     val textAlpha = if (read) ReadItemAlpha else 1f
     val textSubtitleAlpha = if (read) ReadItemAlpha else SecondaryItemAlpha
 
+    val chapterSwipeStartEnabled = chapterSwipeStartAction != LibraryPreferences.ChapterSwipeAction.Disabled
+    val chapterSwipeEndEnabled = chapterSwipeEndAction != LibraryPreferences.ChapterSwipeAction.Disabled
+
+    val dismissState = rememberDismissState()
+    val dismissDirections = remember { mutableSetOf<DismissDirection>() }
+    var lastDismissDirection: DismissDirection? by remember { mutableStateOf(null) }
+    if (lastDismissDirection == null) {
+        if (chapterSwipeStartEnabled) {
+            dismissDirections.add(DismissDirection.EndToStart)
+        }
+        if (chapterSwipeEndEnabled) {
+            dismissDirections.add(DismissDirection.StartToEnd)
+        }
+    }
+    val animateDismissContentAlpha by animateFloatAsState(
+        label = "animateDismissContentAlpha",
+        targetValue = if (lastDismissDirection != null) 1f else 0f,
+        animationSpec = tween(durationMillis = if (lastDismissDirection != null) 500 else 0),
+        finishedListener = {
+            lastDismissDirection = null
+        },
+    )
+    LaunchedEffect(dismissState.currentValue) {
+        when (dismissState.currentValue) {
+            DismissValue.DismissedToEnd -> {
+                lastDismissDirection = DismissDirection.StartToEnd
+                val dismissDirectionsCopy = dismissDirections.toSet()
+                dismissDirections.clear()
+                onChapterSwipe(chapterSwipeEndAction)
+                dismissState.snapTo(DismissValue.Default)
+                dismissDirections.addAll(dismissDirectionsCopy)
+            }
+            DismissValue.DismissedToStart -> {
+                lastDismissDirection = DismissDirection.EndToStart
+                val dismissDirectionsCopy = dismissDirections.toSet()
+                dismissDirections.clear()
+                onChapterSwipe(chapterSwipeStartAction)
+                dismissState.snapTo(DismissValue.Default)
+                dismissDirections.addAll(dismissDirectionsCopy)
+            }
+            DismissValue.Default -> { }
+        }
+    }
+    SwipeToDismiss(
+        state = dismissState,
+        directions = dismissDirections,
+        background = {
+            val backgroundColor = if (chapterSwipeEndEnabled && (dismissState.dismissDirection == DismissDirection.StartToEnd || lastDismissDirection == DismissDirection.StartToEnd)) {
+                MaterialTheme.colorScheme.primary
+            } else if (chapterSwipeStartEnabled && (dismissState.dismissDirection == DismissDirection.EndToStart || lastDismissDirection == DismissDirection.EndToStart)) {
+                MaterialTheme.colorScheme.primary
+            } else {
+                Color.Unspecified
+            }
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(backgroundColor),
+            ) {
+                if (dismissState.dismissDirection in dismissDirections) {
+                    val downloadState = downloadStateProvider()
+                    SwipeBackgroundIcon(
+                        modifier = Modifier
+                            .padding(start = 16.dp)
+                            .align(Alignment.CenterStart)
+                            .alpha(
+                                if (dismissState.dismissDirection == DismissDirection.StartToEnd) 1f else 0f,
+                            ),
+                        tint = contentColorFor(backgroundColor),
+                        swipeAction = chapterSwipeEndAction,
+                        read = read,
+                        bookmark = bookmark,
+                        downloadState = downloadState,
+                    )
+                    SwipeBackgroundIcon(
+                        modifier = Modifier
+                            .padding(end = 16.dp)
+                            .align(Alignment.CenterEnd)
+                            .alpha(
+                                if (dismissState.dismissDirection == DismissDirection.EndToStart) 1f else 0f,
+                            ),
+                        tint = contentColorFor(backgroundColor),
+                        swipeAction = chapterSwipeStartAction,
+                        read = read,
+                        bookmark = bookmark,
+                        downloadState = downloadState,
+                    )
+                }
+            }
+        },
+        dismissContent = {
+            val animateCornerRatio = if (dismissState.offset.value != 0f) {
+                min(
+                    dismissState.progress.fraction / .075f,
+                    1f,
+                )
+            } else {
+                0f
+            }
+            val animateCornerShape = (8f * animateCornerRatio).dp
+            val dismissContentAlpha =
+                if (lastDismissDirection != null) animateDismissContentAlpha else 1f
+            Card(
+                modifier = modifier,
+                colors = CardDefaults.elevatedCardColors(
+                    containerColor = Color.Transparent,
+                ),
+                shape = RoundedCornerShape(animateCornerShape),
+            ) {
                 Row(
-        modifier = modifier
+                    modifier = Modifier
+                        .background(
+                            MaterialTheme.colorScheme.background.copy(dismissContentAlpha),
+                        )
                         .selectedBackground(selected)
+                        .alpha(dismissContentAlpha)
                         .combinedClickable(
                             onClick = onClick,
                             onLongClick = onLongClick,
@@ -146,4 +285,56 @@ fun MangaChapterListItem(
                         )
                     }
                 }
+            }
+        },
+    )
+}
+
+@Composable
+private fun SwipeBackgroundIcon(
+    modifier: Modifier = Modifier,
+    tint: Color,
+    swipeAction: LibraryPreferences.ChapterSwipeAction,
+    read: Boolean,
+    bookmark: Boolean,
+    downloadState: Download.State,
+) {
+    val imageVector = when (swipeAction) {
+        LibraryPreferences.ChapterSwipeAction.ToggleRead -> {
+            if (!read) {
+                Icons.Default.Visibility
+            } else {
+                Icons.Default.VisibilityOff
+            }
+        }
+        LibraryPreferences.ChapterSwipeAction.ToggleBookmark -> {
+            if (!bookmark) {
+                Icons.Default.Bookmark
+            } else {
+                Icons.Default.BookmarkRemove
+            }
+        }
+        LibraryPreferences.ChapterSwipeAction.Download -> {
+            when (downloadState) {
+                Download.State.NOT_DOWNLOADED,
+                Download.State.ERROR,
+                -> { Icons.Default.Download }
+                Download.State.QUEUE,
+                Download.State.DOWNLOADING,
+                -> { Icons.Default.FileDownloadOff }
+                Download.State.DOWNLOADED -> { Icons.Default.Delete }
+            }
+        }
+        LibraryPreferences.ChapterSwipeAction.Disabled -> {
+            null
+        }
+    }
+    imageVector?.let {
+        Icon(
+            modifier = modifier,
+            imageVector = imageVector,
+            tint = tint,
+            contentDescription = null,
+        )
+    }
 }

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

@@ -58,6 +58,7 @@ object SettingsLibraryScreen : SearchableSettings {
         return mutableListOf(
             getCategoriesGroup(LocalNavigator.currentOrThrow, allCategories, libraryPreferences),
             getGlobalUpdateGroup(allCategories, libraryPreferences),
+            getChapterSwipeActionsGroup(libraryPreferences),
         )
     }
 
@@ -216,4 +217,38 @@ object SettingsLibraryScreen : SearchableSettings {
             ),
         )
     }
+
+    @Composable
+    private fun getChapterSwipeActionsGroup(
+        libraryPreferences: LibraryPreferences,
+    ): Preference.PreferenceGroup {
+        val chapterSwipeEndActionPref = libraryPreferences.swipeEndAction()
+        val chapterSwipeStartActionPref = libraryPreferences.swipeStartAction()
+
+        return Preference.PreferenceGroup(
+            title = stringResource(R.string.pref_chapter_swipe),
+            preferenceItems = listOf(
+                Preference.PreferenceItem.ListPreference(
+                    pref = chapterSwipeEndActionPref,
+                    title = stringResource(R.string.pref_chapter_swipe_end),
+                    entries = mapOf(
+                        LibraryPreferences.ChapterSwipeAction.Disabled to stringResource(R.string.action_disable),
+                        LibraryPreferences.ChapterSwipeAction.ToggleBookmark to stringResource(R.string.action_bookmark),
+                        LibraryPreferences.ChapterSwipeAction.ToggleRead to stringResource(R.string.action_mark_as_read),
+                        LibraryPreferences.ChapterSwipeAction.Download to stringResource(R.string.action_download),
+                    ),
+                ),
+                Preference.PreferenceItem.ListPreference(
+                    pref = chapterSwipeStartActionPref,
+                    title = stringResource(R.string.pref_chapter_swipe_start),
+                    entries = mapOf(
+                        LibraryPreferences.ChapterSwipeAction.Disabled to stringResource(R.string.action_disable),
+                        LibraryPreferences.ChapterSwipeAction.ToggleBookmark to stringResource(R.string.action_bookmark),
+                        LibraryPreferences.ChapterSwipeAction.ToggleRead to stringResource(R.string.action_mark_as_read),
+                        LibraryPreferences.ChapterSwipeAction.Download to stringResource(R.string.action_download),
+                    ),
+                ),
+            ),
+        )
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreen.kt

@@ -101,6 +101,8 @@ class MangaScreen(
             dateRelativeTime = screenModel.relativeTime,
             dateFormat = screenModel.dateFormat,
             isTabletUi = isTabletUi(),
+            chapterSwipeEndAction = screenModel.chapterSwipeEndAction,
+            chapterSwipeStartAction = screenModel.chapterSwipeStartAction,
             onBackClicked = navigator::pop,
             onChapterClicked = { openChapter(context, it) },
             onDownloadChapter = screenModel::runChapterDownloadActions.takeIf { !successState.source.isLocalOrStub() },
@@ -125,6 +127,7 @@ class MangaScreen(
             onMultiMarkAsReadClicked = screenModel::markChaptersRead,
             onMarkPreviousAsReadClicked = screenModel::markPreviousChapterRead,
             onMultiDeleteClicked = screenModel::showDeleteChapterDialog,
+            onChapterSwipe = screenModel::chapterSwipe,
             onChapterSelected = screenModel::toggleSelection,
             onAllChapterSelected = screenModel::toggleAllSelection,
             onInvertSelection = screenModel::invertSelection,

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreenModel.kt

@@ -121,6 +121,9 @@ class MangaInfoScreenModel(
     private val filteredChapters: Sequence<ChapterItem>?
         get() = successState?.processedChapters
 
+    val chapterSwipeEndAction = libraryPreferences.swipeEndAction().get()
+    val chapterSwipeStartAction = libraryPreferences.swipeStartAction().get()
+
     val relativeTime by uiPreferences.relativeTime().asState(coroutineScope)
     val dateFormat by mutableStateOf(UiPreferences.dateFormat(uiPreferences.dateFormat().get()))
     private val skipFiltered by readerPreferences.skipFiltered().asState(coroutineScope)
@@ -523,6 +526,49 @@ class MangaInfoScreenModel(
         }
     }
 
+    /**
+     * @throws IllegalStateException if the swipe action is [LibraryPreferences.ChapterSwipeAction.Disabled]
+     */
+    fun chapterSwipe(chapterItem: ChapterItem, swipeAction: LibraryPreferences.ChapterSwipeAction) {
+        coroutineScope.launch {
+            executeChapterSwipeAction(chapterItem, swipeAction)
+        }
+    }
+
+    /**
+     * @throws IllegalStateException if the swipe action is [LibraryPreferences.ChapterSwipeAction.Disabled]
+     */
+    private fun executeChapterSwipeAction(
+        chapterItem: ChapterItem,
+        swipeAction: LibraryPreferences.ChapterSwipeAction,
+    ) {
+        val chapter = chapterItem.chapter
+        when (swipeAction) {
+            LibraryPreferences.ChapterSwipeAction.ToggleRead -> {
+                markChaptersRead(listOf(chapter), !chapter.read)
+            }
+            LibraryPreferences.ChapterSwipeAction.ToggleBookmark -> {
+                bookmarkChapters(listOf(chapter), !chapter.bookmark)
+            }
+            LibraryPreferences.ChapterSwipeAction.Download -> {
+                val downloadAction: ChapterDownloadAction = when (chapterItem.downloadState) {
+                    Download.State.ERROR,
+                    Download.State.NOT_DOWNLOADED,
+                    -> ChapterDownloadAction.START_NOW
+                    Download.State.QUEUE,
+                    Download.State.DOWNLOADING,
+                    -> ChapterDownloadAction.CANCEL
+                    Download.State.DOWNLOADED -> ChapterDownloadAction.DELETE
+                }
+                runChapterDownloadActions(
+                    items = listOf(chapterItem),
+                    action = downloadAction,
+                )
+            }
+            LibraryPreferences.ChapterSwipeAction.Disabled -> throw IllegalStateException()
+        }
+    }
+
     /**
      * Returns the next unread chapter or null if everything is read.
      */

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

@@ -118,6 +118,21 @@ class LibraryPreferences(
 
     // endregion
 
+    // region Swipe Actions
+
+    fun swipeEndAction() = preferenceStore.getEnum("pref_chapter_swipe_end_action", ChapterSwipeAction.ToggleBookmark)
+
+    fun swipeStartAction() = preferenceStore.getEnum("pref_chapter_swipe_start_action", ChapterSwipeAction.ToggleRead)
+
+    // endregion
+
+    enum class ChapterSwipeAction {
+        ToggleRead,
+        ToggleBookmark,
+        Download,
+        Disabled,
+    }
+
     companion object {
         const val DEVICE_ONLY_ON_WIFI = "wifi"
         const val DEVICE_NETWORK_NOT_METERED = "network_not_metered"

i18n/src/main/res/values/strings.xml

@@ -167,7 +167,7 @@
 
     <string name="pref_general_summary">App language, notifications</string>
     <string name="pref_appearance_summary">Theme, date &amp; time format</string>
-    <string name="pref_library_summary">Categories, global update</string>
+    <string name="pref_library_summary">Categories, global update, chapter swipe</string>
     <string name="pref_reader_summary">Reading mode, display, navigation</string>
     <string name="pref_downloads_summary">Automatic download, download ahead</string>
     <string name="pref_tracking_summary">One-way progress sync, enhanced sync</string>
@@ -273,6 +273,10 @@
     <string name="include">Include: %s</string>
     <string name="exclude">Exclude: %s</string>
 
+    <string name="pref_chapter_swipe">Chapter swipe</string>
+    <string name="pref_chapter_swipe_end">Swipe to end action</string>
+    <string name="pref_chapter_swipe_start">Swipe to start action</string>
+
       <!-- Extension section -->
     <string name="multi_lang">Multi</string>
     <string name="ext_updates_pending">Updates pending</string>