Allow preload thumbs aggressively

app/src/main/java/com/hippo/ehviewer/Settings.kt

@@ -204,6 +204,8 @@ object Settings {
     private const val KEY_ARCHIVE_PASSWDS = "archive_passwds"
     private const val KEY_QS_SAVE_PROGRESS = "qs_save_progress"
     private const val DEFAULT_QS_SAVE_PROGRESS = true
+    private const val KEY_PRELOAD_THUMB_AGGRESIVELY = "preload_thumb_aggressively"
+    private const val DEFAULT_PRELOAD_THUMB_AGGRESIVELY = false
     var LIST_THUMB_SIZE_INITED = false
     private lateinit var sSettingsPre: SharedPreferences
     private var LIST_THUMB_SIZE = 40
@@ -644,4 +646,7 @@ object Settings {
     fun putNotificationRequired() {
         putBoolean(KEY_NOTIFICATION_REQUIRED, true)
     }
+
+    val preloadThumbAggressively: Boolean
+        get() = getBoolean(KEY_PRELOAD_THUMB_AGGRESIVELY, DEFAULT_PRELOAD_THUMB_AGGRESIVELY)
 }

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt

@@ -107,6 +107,8 @@ import androidx.navigation.fragment.findNavController
 import arrow.core.partially1
 import coil.Coil.imageLoader
 import coil.annotation.ExperimentalCoilApi
+import coil.imageLoader
+import coil.request.ImageRequest
 import com.google.accompanist.themeadapter.material3.Mdc3Theme
 import com.google.android.material.progressindicator.CircularProgressIndicator
 import com.google.android.material.snackbar.Snackbar
@@ -141,6 +143,7 @@ import com.hippo.ehviewer.client.parser.ParserUtils
 import com.hippo.ehviewer.client.parser.RateGalleryParser
 import com.hippo.ehviewer.client.parser.TorrentParser
 import com.hippo.ehviewer.client.parser.VoteTagParser
+import com.hippo.ehviewer.coil.ehUrl
 import com.hippo.ehviewer.dao.DownloadInfo
 import com.hippo.ehviewer.dao.Filter
 import com.hippo.ehviewer.download.DownloadManager.DownloadInfoListener
@@ -835,6 +838,17 @@ class GalleryDetailScene : BaseScene(), DownloadInfoListener {
             }.onSuccess {
                 galleryDetailCache.put(it.gid, it)
                 EhDB.putHistoryInfo(it)
+                if (Settings.preloadThumbAggressively) {
+                    lifecycleScope.launchIO {
+                        it.previewList.forEach {
+                            it.imageUrl.run {
+                                context?.imageLoader?.enqueue(
+                                    ImageRequest.Builder(requireContext()).ehUrl(this).build()
+                                )
+                            }
+                        }
+                    }
+                }
                 composeBindingGD = it
                 composeBindingGI = it
                 updateDownloadState()

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.kt

@@ -49,6 +49,8 @@ import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import coil.imageLoader
+import coil.request.ImageRequest
 import com.google.android.material.datepicker.CalendarConstraints
 import com.google.android.material.datepicker.CalendarConstraints.DateValidator
 import com.google.android.material.datepicker.CompositeDateValidator
@@ -61,7 +63,6 @@ import com.hippo.app.EditTextDialogBuilder
 import com.hippo.drawable.AddDeleteDrawable
 import com.hippo.easyrecyclerview.EasyRecyclerView
 import com.hippo.easyrecyclerview.FastScroller.OnDragHandlerListener
-import com.hippo.ehviewer.download.DownloadManager as downloadManager
 import com.hippo.ehviewer.EhApplication.Companion.favouriteStatusRouter
 import com.hippo.ehviewer.EhDB
 import com.hippo.ehviewer.FavouriteStatusRouter
@@ -82,6 +83,7 @@ import com.hippo.ehviewer.client.exception.EhException
 import com.hippo.ehviewer.client.parser.GalleryDetailUrlParser
 import com.hippo.ehviewer.client.parser.GalleryListParser
 import com.hippo.ehviewer.client.parser.GalleryPageUrlParser
+import com.hippo.ehviewer.coil.ehUrl
 import com.hippo.ehviewer.dao.DownloadInfo
 import com.hippo.ehviewer.dao.QuickSearch
 import com.hippo.ehviewer.databinding.DrawerListRvBinding
@@ -113,6 +115,7 @@ import java.io.File
 import java.time.LocalDateTime
 import java.time.ZoneId
 import java.time.ZoneOffset
+import com.hippo.ehviewer.download.DownloadManager as downloadManager
 
 class GalleryListScene : SearchBarScene(), OnDragHandlerListener, SearchLayout.Helper,
     OnClickFabListener, OnExpandListener {
@@ -1035,6 +1038,17 @@ class GalleryListScene : SearchBarScene(), OnDragHandlerListener, SearchLayout.H
     }
 
     private fun onGetGalleryListSuccess(result: GalleryListParser.Result, taskId: Int) {
+        if (Settings.preloadThumbAggressively) {
+            lifecycleScope.launchIO {
+                result.galleryInfoList.forEach {
+                    it.thumb?.run {
+                        context?.imageLoader?.enqueue(
+                            ImageRequest.Builder(requireContext()).ehUrl(this).build()
+                        )
+                    }
+                }
+            }
+        }
         if (mHelper != null && mHelper!!.isCurrentTask(taskId)) {
             val emptyString =
                 getString(if (mUrlBuilder.mode == MODE_SUBSCRIPTION && result.noWatchedTags) R.string.gallery_list_empty_hit_subscription else R.string.gallery_list_empty_hit)
@@ -1113,7 +1127,8 @@ class GalleryListScene : SearchBarScene(), OnDragHandlerListener, SearchLayout.H
         override fun onCancel() {}
     }
 
-    private class QsDrawerHolder(val binding: ItemDrawerListBinding) : RecyclerView.ViewHolder(binding.root)
+    private class QsDrawerHolder(val binding: ItemDrawerListBinding) :
+        RecyclerView.ViewHolder(binding.root)
 
     private inner class MoveDialogHelper(
         private val mLabels: Array<String>,

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryPreviewsScene.kt

@@ -21,6 +21,9 @@ import android.view.LayoutInflater
 import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
+import androidx.lifecycle.lifecycleScope
+import coil.imageLoader
+import coil.request.ImageRequest
 import com.hippo.app.BaseDialogBuilder
 import com.hippo.easyrecyclerview.MarginItemDecoration
 import com.hippo.ehviewer.R
@@ -31,6 +34,7 @@ import com.hippo.ehviewer.client.EhUrl
 import com.hippo.ehviewer.client.data.GalleryDetail
 import com.hippo.ehviewer.client.data.GalleryPreview
 import com.hippo.ehviewer.client.exception.EhException
+import com.hippo.ehviewer.coil.ehUrl
 import com.hippo.ehviewer.databinding.DialogGoToBinding
 import com.hippo.ehviewer.databinding.SceneGalleryPreviewsBinding
 import com.hippo.util.getParcelableCompat
@@ -38,6 +42,7 @@ import com.hippo.widget.ContentLayout.ContentHelper
 import com.hippo.widget.recyclerview.AutoGridLayoutManager
 import com.hippo.widget.recyclerview.STRATEGY_SUITABLE_SIZE
 import com.hippo.yorozuya.LayoutUtils
+import eu.kanade.tachiyomi.util.lang.launchIO
 import java.util.Locale
 
 class GalleryPreviewsScene : BaseToolbarScene() {
@@ -162,6 +167,17 @@ class GalleryPreviewsScene : BaseToolbarScene() {
 
     private fun onGetPreviewListSuccess(result: Pair<List<GalleryPreview>, Int>, taskId: Int) {
         if (null != mHelper && mHelper!!.isCurrentTask(taskId) && null != mGalleryDetail) {
+            if (Settings.preloadThumbAggressively) {
+                lifecycleScope.launchIO {
+                    result.first.forEach {
+                        it.imageUrl.run {
+                            context?.imageLoader?.enqueue(
+                                ImageRequest.Builder(requireContext()).ehUrl(this).build()
+                            )
+                        }
+                    }
+                }
+            }
             mHelper!!.onGetPageData(taskId, result.second, 0, null, null, result.first)
         }
     }

app/src/main/res/values-zh-rCN/strings.xml

@@ -538,6 +538,7 @@
     <string name="passwd_cannot_be_empty">密码不能为空</string>
     <string name="list_tile_thumb_size">详情模式下缩略图大小</string>
     <string name="account_name">账户</string>
+    <string name="preload_thumb_aggressively">激进地预载缩略图</string>
     <!-- Tachiyomi Reader Start-->
     <string name="action_settings">设置</string>
     <string name="action_retry">重试</string>

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

@@ -601,6 +601,7 @@
     <string name="passwd_cannot_be_empty">Password can\'t be empty</string>
     <string name="list_tile_thumb_size">Thumb size in thumb mode</string>
     <string name="account_name">Account</string>
+    <string name="preload_thumb_aggressively">Preload thumbs aggressively</string>
     <!-- Tachiyomi Reader Start-->
     <string name="action_settings">Settings</string>
     <string name="pref_rotation_type">Default rotation type</string>

app/src/main/res/xml/advanced_settings.xml

@@ -87,6 +87,12 @@
         android:title="@string/settings_advanced_bypass_vpn_title"
         app:iconSpaceReserved="false" />
 
+    <rikka.material.preference.MaterialSwitchPreference
+        android:defaultValue="false"
+        android:key="preload_thumb_aggressively"
+        android:title="@string/preload_thumb_aggressively"
+        app:iconSpaceReserved="false" />
+
     <Preference
         android:key="export_data"
         android:summary="@string/settings_advanced_export_data_summary"