Prepare for release 1.10.3

Update compose snapshot and r8
Update compose-bom to v2024.01.00-alpha01
2024-01-15 23:39:56 +08:00 · 2024-01-15 20:01:11 +08:00 · 2024-01-15 17:41:46 +08:00 · 2024-01-15 02:54:24 +00:00 · 2024-01-14 19:25:34 +00:00 · 2024-01-14 16:40:50 +08:00
426 changed files with 16039 additions and 21497 deletions
@@ -64,7 +64,7 @@ body:
      description: 您可以通过设置-高级-导出日志来获得日志文件 / You can get logs file in Settings - Advanced - Dump logcat
      placeholder: 06-15 17:44:53.704 23382 23382 E ...
    validations:
-      required: false
+      required: true

  - type: textarea
    id: more
@@ -79,6 +79,15 @@ body:
    validations:
      required: false

+  - type: input
+    id: site
+    attributes:
+      label: 浏览站点 / Browsing site
+      description: E-Hentai / ExHentai
+      placeholder: E-Hentai
+    validations:
+      required: true
+
  - type: input
    id: version
    attributes:
@@ -4,7 +4,6 @@ on:
  push:
    branches:
      - '*'
-      - 'renovate/**'
  pull_request:
  workflow_dispatch:

@@ -18,11 +17,11 @@ jobs:
        with:
          submodules: 'recursive'

-      - name: Setup Java 17
-        uses: actions/setup-java@v3
+      - name: Setup Java 21
+        uses: actions/setup-java@v4
        with:
          distribution: temurin
-          java-version: 17
+          java-version: 21

      - name: Install Rust Toolchain
        run: rustup update && rustup target add armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android && rustup component add rustfmt clippy
@@ -48,9 +47,6 @@ jobs:
      - name: Spotless Check
        run: ./gradlew spotlessCheck

-      - name: Lint Check
-        run: ./gradlew lintMarshmallowGmsRelease
-
      - name: CMake Cache
        uses: actions/cache@v3
        with:
@@ -0,0 +1,21 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+
+concurrency:
+  group: lock-threads
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v5
+        with:
+          issue-inactive-days: '1'
+          process-only: 'issues'
@@ -15,11 +15,11 @@ jobs:
        with:
          submodules: 'recursive'

-      - name: Setup Java 17
-        uses: actions/setup-java@v3
+      - name: Setup Java 21
+        uses: actions/setup-java@v4
        with:
          distribution: temurin
-          java-version: 17
+          java-version: 21

      - name: Install Rust Toolchain
        run: rustup update && rustup target add armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android
@@ -0,0 +1,123 @@
+# 变更日志
+
+## [1.10.3] - 2024-01-15
+
+### 新功能
+
+* [Marshmallow] 支持裁剪边缘、打开压缩包和 GIF
+
+### 改进
+
+* 由于部分设备上的非预期行为 [#578](https://github.com/FooIbar/EhViewer/issues/578) [#596](https://github.com/FooIbar/EhViewer/issues/596)，默认禁用预见式返回导航动画，可于 设置-高级 中开启
+* 杂项优化
+
+### Bug 修复
+
+* 刷新后页面无响应 [#579](https://github.com/FooIbar/EhViewer/issues/579)
+* 浏览中保存图片后点击操作被阻挡 [#581](https://github.com/FooIbar/EhViewer/issues/581)
+* 在画廊详情页面切换至后台后点击评论闪退 [#580](https://github.com/FooIbar/EhViewer/issues/580)
+* 已下载的画廊中未阅读缓存过的图片解码失败 [#592](https://github.com/FooIbar/EhViewer/issues/592)
+* 在收藏页多选并下载会使得下载状态出现问题 [#603](https://github.com/FooIbar/EhViewer/issues/603)
+* 未能在不重启情况下切换 Http 引擎 [#610](https://github.com/FooIbar/EhViewer/issues/610)
+* 在有进度的画廊阅读界面无法直接回到第一页 [#614](https://github.com/FooIbar/EhViewer/issues/614)
+* 请求新闻界面失效 [#605](https://github.com/FooIbar/EhViewer/issues/605)
+* 收藏夹为空解析失败 [#630](https://github.com/FooIbar/EhViewer/issues/630)
+
+
+## [1.10.2] - 2023-12-31
+
+### 新功能
+
+* [阅读器] 支持裁剪图片黑色/白色边缘
+
+### 改进
+
+* 切换 HTTP 引擎无需重启
+* 优化过渡动画
+* 杂项性能优化
+
+### Bug 修复
+
+* 修复搜索建议中出现关键词相同的条目时崩溃 [#533](https://github.com/FooIbar/EhViewer/issues/533) [#555](https://github.com/FooIbar/EhViewer/issues/555)
+* 修复重命名下载标签时不显示原标签 [#534](https://github.com/FooIbar/EhViewer/issues/534)
+* 修复调整下载项目顺序时卡顿 [#552](https://github.com/FooIbar/EhViewer/issues/552)
+* 修复新增或修改评论后黑屏 [#554](https://github.com/FooIbar/EhViewer/issues/554)
+* 修复剪贴板读取bug [#566](https://github.com/FooIbar/EhViewer/issues/566)
+* 修复画廊信息对话框无法通过返回按钮/手势关闭 [#413](https://github.com/FooIbar/EhViewer/issues/413)
+
+
+## [1.10.1] - 2023-12-19
+
+### 重大变更
+
+* 由于 Apache HttpClient 5 在 Android 10 以下无法使用，后备 HTTP 引擎恢复为 OkHttp [#514](https://github.com/FooIbar/EhViewer/issues/514)
+
+### Bug 修复
+
+* 修复获取 pToken 失败导致无限加载 [#508](https://github.com/FooIbar/EhViewer/issues/508)
+* 修复阅读页快速滑动滑块导致下载延时过多累计 [#512](https://github.com/FooIbar/EhViewer/issues/512)
+* 修复 Android 9 以下的设备上无法退出搜索栏 [#513](https://github.com/FooIbar/EhViewer/issues/513)
+
+
+## [1.10.0] - 2023-12-14 [YANKED]
+
+### 重大变更
+
+* 后备 HTTP 引擎变更为 Apache HttpClient 5
+* 类别和高级搜索选项移至搜索栏下方
+
+### 新功能
+
+* 支持在搜索时指定画廊语言
+
+### 改进
+
+* 在下载中阅读画廊时会更新历史记录
+* 多处性能改进
+
+### Bug 修复
+
+* 修复无法由外部应用进入画廊页面 [#436](https://github.com/FooIbar/EhViewer/issues/436)
+* 修复点击精确到页的画廊链接闪退 [#430](https://github.com/FooIbar/EhViewer/issues/430)
+* 修复无法搜索本地收藏 [#491](https://github.com/FooIbar/EhViewer/issues/491)
+* 修复 CI 版本不显示变更日志
+
+
+## [1.9.0] - 2023-12-01
+
+### 重大变更
+
+* 除阅读器外全部迁移至 Compose
+
+### 新功能
+
+* 设置-高级 中增加实验性滑动手势敏感度设置
+* 支持通过滑动手势打开右侧抽屉
+* 支持预见式返回动画，相关设置位于 设置-高级
+
+### 改进
+
+* [阅读器] 画廊页数过多时隐藏进度条刻度并禁用触感反馈
+* 优化原图下载重试策略
+* 优化小屏设备上的搜索类别布局
+* 优化过渡动画
+* 优化历史记录删除动画
+* 设置-EH 中的缩略图大小设置改为缩略图列数
+
+### Bug 修复
+
+* 修复点击通知栏的下载通知闪退 [#175](https://github.com/FooIbar/EhViewer/issues/175)
+* 修复收藏状态显示错误 [#189](https://github.com/FooIbar/EhViewer/issues/189)
+* 修复双击导航按钮后无法打开导航抽屉
+* 修复某些情况下闪退 [#142](https://github.com/FooIbar/EhViewer/issues/142) [#208](https://github.com/FooIbar/EhViewer/issues/208)
+* 修复收藏界面点击重试崩溃 [#193](https://github.com/FooIbar/EhViewer/issues/193)
+* 修复本地收藏滚动位置丢失 [#192](https://github.com/FooIbar/EhViewer/issues/192)
+* 修复手速过快页面切换过快使加载圈圈不自动消失 [#209](https://github.com/FooIbar/EhViewer/issues/209)
+* 修复打开并关闭右侧抽屉后，状态栏一片白色 [#101](https://github.com/FooIbar/EhViewer/issues/101)
+* 修复使用深色主题时，切换界面会闪过亮色界面 [#121](https://github.com/FooIbar/EhViewer/issues/121)
+* [Marshmallow] 修复小内存设备上图片解码失败 [#229](https://github.com/FooIbar/EhViewer/issues/229) [#372](https://github.com/FooIbar/EhViewer/issues/372)
+* 修复已舍弃画廊上传者解析
+
+### 已知问题
+
+* 画廊信息对话框无法通过返回关闭 [#413](https://github.com/FooIbar/EhViewer/issues/413)
@@ -1,15 +1,11 @@
-# Maintenance Mode
-
-The project is in maintenance mode, will only receive bugfixes.
-
 <p align="right">
  <strong>English</strong>
  <span> | </span>
-  <a href="https://github.com/FooIbar/EhViewer/blob/1.8.x.x/docs/README/zh-cn.md">
+  <a href="/docs/README/zh-cn.md">
  简体中文
  </a>
  <span> | </span>
-  <a href="https://github.com/FooIbar/EhViewer/blob/1.8.x.x/docs/README/zh-tw.md">
+  <a href="/docs/README/zh-tw.md">
  正體中文
  </a>
 </p>
@@ -23,15 +19,12 @@ The project is in maintenance mode, will only receive bugfixes.
  <a href="https://github.com/FooIbar/EhViewer/actions/workflows/ci.yml">
    <img src="https://github.com/FooIbar/EhViewer/actions/workflows/ci.yml/badge.svg" alt="Github Actions">
  </a>
-  <a href="https://github.com/FooIbar/EhViewer/blob/1.8.x.x/LICENSE">
+  <a href="/LICENSE">
    <img src="https://img.shields.io/github/license/FooIbar/EhViewer" alt="LICENSE">
  </a>
  <a href="https://www.codefactor.io/repository/github/FooIbar/EhViewer">
    <img src="https://www.codefactor.io/repository/github/FooIbar/EhViewer/badge" alt="CodeFactor">
  </a>
-  <a href="https://github.com/FooIbar/EhViewer/releases">
-    <img src="https://img.shields.io/github/downloads/FooIbar/EhViewer/total.svg" alt="Downloads">
-  </a>
  <a href="https://github.com/FooIbar/EhViewer/releases">
    <img src="https://img.shields.io/github/v/release/FooIbar/EhViewer" alt="Release">
  </a>
@@ -42,23 +35,23 @@ The project is in maintenance mode, will only receive bugfixes.

 <div align="center">
  <h3>
-    <a href="https://github.com/FooIbar/EhViewer#description">
+    <a href="#description">
    Description
    </a>
    <span> | </span>
-    <a href="https://github.com/FooIbar/EhViewer#download">
+    <a href="#download">
    Download
    </a>
    <span> | </span>
-    <a href="https://github.com/FooIbar/EhViewer#screenshot">
+    <a href="#screenshot">
    Screenshot
    </a>
    <span> | </span>
-    <a href="https://github.com/FooIbar/EhViewer#thanks">
+    <a href="#thanks">
    Thanks
    </a>
    <span> | </span>
-    <a href="https://github.com/FooIbar/EhViewer#license">
+    <a href="#license">
    License
    </a>
  </h3>
@@ -73,14 +66,14 @@ and [Dynamic Color](https://m3.material.io/styles/color/dynamic-color/overview)

 # Download

-| Flavor | Feature |
-|-|-|
-| Default | Android 9+, full support |
-| Marshmallow | Android 6.0+, limited support* |
-| OSS | FOSS dependencies**  |
-| GMS | Proprietary GMS component |
+| Flavor      | Feature                           |
+|-------------|-----------------------------------|
+| Default     | Android 9+, full support          |
+| Marshmallow | Android 6.0-8.1, limited support* |
+| OSS         | FOSS dependencies**               |
+| GMS         | Proprietary GMS component         |

-\* Archives and GIFs are not supported
+\* May not support some archives

 ** Fall back to OkHttp on devices that don't support [HttpEngine](https://developer.android.com/reference/android/net/http/HttpEngine)

@@ -100,14 +93,14 @@ Here is the libraries
 - [Arrow](https://arrow-kt.io/)
 - [AOSP & AndroidX](http://source.android.com/)
 - [Kotlin & KotlinX](https://kotlinlang.org/)
- [FullDraggableDrawer](https://github.com/PureWriter/FullDraggableDrawer)
- [MCA](https://github.com/material-components/material-components-android)
- [material-design-icons](https://github.com/google/material-design-icons)
- [Okhttp](https://square.github.io/okhttp/)
- [RikkaX](https://github.com/RikkaApps/RikkaX)
- [Libarchive](http://www.libarchive.org/)
+- [MDC-Android](https://github.com/material-components/material-components-android)
+- [Material Icons](https://github.com/google/material-design-icons)
+- [OkHttp](https://square.github.io/okhttp/)
+- [Ktor](https://ktor.io/)
 - [Coil](https://coil-kt.github.io/coil/)
- [Jsoup](https://jsoup.org/)
+- [Compose Destinations](https://composedestinations.rafaelcosta.xyz/)
+- [libarchive](http://www.libarchive.org/)
+- [jsoup](https://jsoup.org/)

 Specially thanks [Tachiyomi](https://tachiyomi.org/) for its reader implementation!

@@ -64,8 +64,8 @@ android {
        applicationId = "moe.tarsin.ehviewer"
        minSdk = 28
        targetSdk = 34
-        versionCode = 180044
-        versionName = "1.8.10.1"
+        versionCode = 180050
+        versionName = "1.10.3"
        resourceConfigurations.addAll(
            listOf(
                "zh",
@@ -100,18 +100,9 @@ android {
            minSdk = 23
            applicationIdSuffix = ".m"
            versionNameSuffix = "-M"
-            externalNativeBuild {
-                cmake {
-                    targets += "noop"
-                }
-            }
            compileOptions {
                isCoreLibraryDesugaringEnabled = true
            }
-            lint {
-                checkOnly += setOf("InlinedApi", "NewApi", "UnusedAttribute")
-                error += setOf("InlinedApi", "UnusedAttribute")
-            }
        }
        create("oss") {
            dimension = "oss"
@@ -135,7 +126,7 @@ android {
            "-Xjvm-default=all",
            "-Xlambdas=indy",

-            "-opt-in=coil.annotation.ExperimentalCoilApi",
+            "-opt-in=coil3.annotation.ExperimentalCoilApi",
            "-opt-in=androidx.compose.foundation.layout.ExperimentalLayoutApi",
            "-opt-in=androidx.compose.material3.ExperimentalMaterial3Api",
            "-opt-in=androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi",
@@ -149,18 +140,20 @@ android {
            "-opt-in=kotlinx.serialization.ExperimentalSerializationApi",
            "-opt-in=splitties.experimental.ExperimentalSplittiesApi",
            "-opt-in=splitties.preferences.DataStorePreferencesPreview",
+
+            "-P", "plugin:androidx.compose.compiler.plugins.kotlin:experimentalStrongSkipping=true",
        )
    }

    lint {
-        abortOnError = true
-        checkReleaseBuilds = false
-        disable.add("MissingTranslation")
+        disable += setOf("MissingTranslation", "MissingQuantity")
+        fatal += setOf("NewApi", "InlineApi")
    }

    packaging {
        resources {
            excludes += "/META-INF/**"
+            excludes += "/okhttp3/**"
            excludes += "/kotlin/**"
            excludes += "**.txt"
            excludes += "**.bin"
@@ -202,41 +195,40 @@ dependencies {
    implementation(libs.androidx.appcompat)
    implementation(libs.androidx.biometric)
    implementation(libs.androidx.browser)
-    implementation(libs.androidx.collection)

    // https://developer.android.com/jetpack/androidx/releases/compose-material3
    api(platform(libs.compose.bom))
    implementation(libs.bundles.compose)

+    implementation(libs.compose.destinations.core)
+    ksp(libs.compose.destinations.compiler)
+
    implementation(libs.androidx.core)
    implementation(libs.androidx.core.splashscreen)

    implementation(libs.androidx.constraintlayout.compose)
-    implementation(libs.androidx.coordinatorlayout)
-    implementation(libs.androidx.fragment)
    // https://developer.android.com/jetpack/androidx/releases/lifecycle
    implementation(libs.androidx.lifecycle.process)
+    implementation(libs.androidx.lifecycle.compose)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)

    // https://developer.android.com/jetpack/androidx/releases/navigation
    implementation(libs.bundles.androidx.navigation)

    // https://developer.android.com/jetpack/androidx/releases/paging
-    implementation(libs.bundles.androidx.paging)
+    implementation(libs.androidx.paging.compose)

-    implementation(libs.bundles.androidx.recyclerview)
+    implementation(libs.androidx.recyclerview)

    // https://developer.android.com/jetpack/androidx/releases/room
    ksp(libs.androidx.room.compiler)
    implementation(libs.androidx.room.paging)

-    implementation(libs.androidx.swiperefreshlayout)
    implementation(libs.androidx.work.runtime)
-    implementation(libs.drawer)
    implementation(libs.photoview) // Dead Dependency
    implementation(libs.directionalviewpager) // Dead Dependency
-    // https://github.com/google/accompanist/releases
-    implementation(libs.bundles.accompanist)
    implementation(libs.material)
+    implementation(libs.material.motion.core)

    implementation(libs.bundles.splitties)

@@ -246,10 +238,14 @@ dependencies {

    implementation(libs.okio.jvm)

+    implementation(libs.diff)
+
    implementation(libs.aboutlibraries.core)
+    implementation(libs.aboutlibraries.compose.m3)

    implementation(libs.insetter) // Dead Dependency
-    implementation(libs.bundles.rikkax)
+
+    implementation(libs.reorderable)

    implementation(platform(libs.arrow.stack))
    implementation(libs.arrow.fx.coroutines)
@@ -263,20 +259,22 @@ dependencies {
    implementation(libs.bundles.kotlinx.serialization)

    implementation(libs.kotlinx.coroutines.android)
+    implementation(libs.kotlinx.datetime)
    implementation(libs.jsoup)

-    debugImplementation(libs.chucker)
-    releaseImplementation(libs.chucker.nop)
-
-    debugImplementation(libs.leakcanary.android)
-
    coreLibraryDesugaring(libs.desugar)

    "gmsImplementation"(libs.bundles.cronet)
 }

+configurations.all {
+    resolutionStrategy {
+        exclude("androidx.navigation", "navigation-compose")
+    }
+}
+
 kotlin {
-    jvmToolchain(17)
+    jvmToolchain(21)
 }

 ksp {
@@ -1,30 +1,20 @@
-keepclassmembers class * implements android.os.Parcelable {
-    public static final ** CREATOR;
-}
-
 -keepclasseswithmembernames,includedescriptorclasses class * {
    native <methods>;
 }

-# https://issuetracker.google.com/issues/190382641
-keepclassmembers class kotlin.SafePublicationLazyImpl {
-    java.lang.Object _value;
+-keepclassmembers enum * {
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
 }

-keep class androidx.viewpager.widget.ViewPager$LayoutParams { int position; }
-
-keep class com.hippo.ehviewer.client.parser.Torrent { *; }
-keep class com.hippo.ehviewer.client.parser.GalleryListResult { *; }
-keep class com.hippo.ehviewer.client.parser.Limits { *; }
-keep class com.hippo.ehviewer.client.data.BaseGalleryInfo { *; }
-keep class com.hippo.ehviewer.ui.scene.SearchBarScene { getBinding(); }
+-keepclassmembers class * implements android.os.Parcelable {
+    public static final ** CREATOR;
+}

 # Ktor logger
 -dontwarn org.slf4j.impl.StaticLoggerBinder

-keepattributes LineNumberTable,SourceFile
-renamesourcefileattribute SourceFile
+-dontwarn org.conscrypt.Conscrypt

-repackageclasses
 -allowaccessmodification
-overloadaggressively
+-repackageclasses
@@ -1,88 +0,0 @@
-{
-  "formatVersion": 1,
-  "database": {
-    "version": 1,
-    "identityHash": "c801ee62729ba20a203b150211234d5c",
-    "entities": [
-      {
-        "tableName": "OK_HTTP_3_COOKIE",
-        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`NAME` TEXT, `VALUE` TEXT, `EXPIRES_AT` INTEGER NOT NULL, `DOMAIN` TEXT, `PATH` TEXT, `SECURE` INTEGER NOT NULL, `HTTP_ONLY` INTEGER NOT NULL, `PERSISTENT` INTEGER NOT NULL, `HOST_ONLY` INTEGER NOT NULL, `_id` INTEGER NOT NULL, PRIMARY KEY(`_id`))",
-        "fields": [
-          {
-            "fieldPath": "name",
-            "columnName": "NAME",
-            "affinity": "TEXT",
-            "notNull": false
-          },
-          {
-            "fieldPath": "value",
-            "columnName": "VALUE",
-            "affinity": "TEXT",
-            "notNull": false
-          },
-          {
-            "fieldPath": "expiresAt",
-            "columnName": "EXPIRES_AT",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "domain",
-            "columnName": "DOMAIN",
-            "affinity": "TEXT",
-            "notNull": false
-          },
-          {
-            "fieldPath": "path",
-            "columnName": "PATH",
-            "affinity": "TEXT",
-            "notNull": false
-          },
-          {
-            "fieldPath": "secure",
-            "columnName": "SECURE",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "httpOnly",
-            "columnName": "HTTP_ONLY",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "persistent",
-            "columnName": "PERSISTENT",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "hostOnly",
-            "columnName": "HOST_ONLY",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "id",
-            "columnName": "_id",
-            "affinity": "INTEGER",
-            "notNull": true
-          }
-        ],
-        "primaryKey": {
-          "autoGenerate": false,
-          "columnNames": [
-            "_id"
-          ]
-        },
-        "indices": [],
-        "foreignKeys": []
-      }
-    ],
-    "views": [],
-    "setupQueries": [
-      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
-      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, 'c801ee62729ba20a203b150211234d5c')"
-    ]
-  }
-}
@@ -1,88 +0,0 @@
-{
-  "formatVersion": 1,
-  "database": {
-    "version": 2,
-    "identityHash": "1b80cd29939b0f43934721f1289ba94d",
-    "entities": [
-      {
-        "tableName": "OK_HTTP_3_COOKIE",
-        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`NAME` TEXT NOT NULL, `VALUE` TEXT NOT NULL, `EXPIRES_AT` INTEGER NOT NULL, `DOMAIN` TEXT NOT NULL, `PATH` TEXT NOT NULL, `SECURE` INTEGER NOT NULL, `HTTP_ONLY` INTEGER NOT NULL, `PERSISTENT` INTEGER NOT NULL, `HOST_ONLY` INTEGER NOT NULL, `_id` INTEGER, PRIMARY KEY(`_id`))",
-        "fields": [
-          {
-            "fieldPath": "name",
-            "columnName": "NAME",
-            "affinity": "TEXT",
-            "notNull": true
-          },
-          {
-            "fieldPath": "value",
-            "columnName": "VALUE",
-            "affinity": "TEXT",
-            "notNull": true
-          },
-          {
-            "fieldPath": "expiresAt",
-            "columnName": "EXPIRES_AT",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "domain",
-            "columnName": "DOMAIN",
-            "affinity": "TEXT",
-            "notNull": true
-          },
-          {
-            "fieldPath": "path",
-            "columnName": "PATH",
-            "affinity": "TEXT",
-            "notNull": true
-          },
-          {
-            "fieldPath": "secure",
-            "columnName": "SECURE",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "httpOnly",
-            "columnName": "HTTP_ONLY",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "persistent",
-            "columnName": "PERSISTENT",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "hostOnly",
-            "columnName": "HOST_ONLY",
-            "affinity": "INTEGER",
-            "notNull": true
-          },
-          {
-            "fieldPath": "id",
-            "columnName": "_id",
-            "affinity": "INTEGER",
-            "notNull": false
-          }
-        ],
-        "primaryKey": {
-          "autoGenerate": false,
-          "columnNames": [
-            "_id"
-          ]
-        },
-        "indices": [],
-        "foreignKeys": []
-      }
-    ],
-    "views": [],
-    "setupQueries": [
-      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
-      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, '1b80cd29939b0f43934721f1289ba94d')"
-    ]
-  }
-}
@@ -1,86 +1,20 @@
 package com.hippo.ehviewer.cronet

-import com.hippo.ehviewer.client.CHROME_ACCEPT
-import com.hippo.ehviewer.client.CHROME_ACCEPT_LANGUAGE
-import com.hippo.ehviewer.client.CHROME_USER_AGENT
-import com.hippo.ehviewer.client.EhCookieStore
-import java.nio.ByteBuffer
-import kotlin.contracts.InvocationKind
-import kotlin.contracts.contract
-import kotlin.coroutines.Continuation
-import kotlin.coroutines.resume
-import kotlin.coroutines.resumeWithException
-import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.suspendCancellableCoroutine
-import okhttp3.HttpUrl.Companion.toHttpUrl
+import com.hippo.ehviewer.Settings
 import okio.Path.Companion.toOkioPath
 import org.chromium.net.CronetEngine
-import org.chromium.net.CronetException
-import org.chromium.net.UrlRequest
-import org.chromium.net.UrlResponseInfo
 import splitties.init.appCtx

 val cronetHttpClient: CronetEngine = CronetEngine.Builder(appCtx).apply {
    enableBrotli(true)
+    setUserAgent(Settings.userAgent)
+
+    // Cache Quic hint only since the real cache mechanism should on Ktor layer
    val cache = (appCtx.cacheDir.toOkioPath() / "http_cache").toFile().apply { mkdirs() }
    setStoragePath(cache.absolutePath)
-    enableHttpCache(CronetEngine.Builder.HTTP_CACHE_DISK_NO_HTTP, 100 * 1024)
-    setUserAgent(CHROME_USER_AGENT)
+    enableHttpCache(CronetEngine.Builder.HTTP_CACHE_DISK_NO_HTTP, 4096)
+
+    addQuicHint("e-hentai.org", 443, 443)
+    addQuicHint("forums.e-hentai.org", 443, 443)
+    addQuicHint("exhentai.org", 443, 443)
 }.build()
-
-class CronetRequest {
-    lateinit var consumer: (ByteBuffer) -> Unit
-    lateinit var onResponse: CronetRequest.(UrlResponseInfo) -> Unit
-    lateinit var request: UrlRequest
-    lateinit var onError: (Throwable) -> Unit
-    lateinit var readerCont: Continuation<Unit>
-    val callback = object : UrlRequest.Callback() {
-        override fun onRedirectReceived(req: UrlRequest, info: UrlResponseInfo, url: String) {
-            req.followRedirect()
-        }
-
-        override fun onResponseStarted(req: UrlRequest, info: UrlResponseInfo) {
-            onResponse(info)
-        }
-
-        override fun onReadCompleted(req: UrlRequest, info: UrlResponseInfo, data: ByteBuffer) {
-            data.flip()
-            consumer(data)
-        }
-
-        override fun onSucceeded(req: UrlRequest, info: UrlResponseInfo) {
-            readerCont.resume(Unit)
-        }
-
-        override fun onFailed(req: UrlRequest, info: UrlResponseInfo?, e: CronetException) {
-            onError(e)
-        }
-    }
-}
-
-inline fun cronetRequest(url: String, referer: String? = null, conf: UrlRequest.Builder.() -> Unit = {}) = CronetRequest().apply {
-    request = cronetHttpClient.newUrlRequestBuilder(url, callback, cronetHttpClientExecutor).apply {
-        addHeader("Cookie", EhCookieStore.getCookieHeader(url.toHttpUrl()))
-        addHeader("Accept", CHROME_ACCEPT)
-        addHeader("Accept-Language", CHROME_ACCEPT_LANGUAGE)
-        referer?.let { addHeader("Referer", it) }
-    }.apply(conf).build()
-}
-
-suspend inline fun <R> CronetRequest.execute(crossinline callback: suspend CronetRequest.(UrlResponseInfo) -> R): R {
-    contract {
-        callsInPlace(callback, InvocationKind.EXACTLY_ONCE)
-    }
-    return coroutineScope {
-        suspendCancellableCoroutine { cont ->
-            onResponse = { launch { cont.resume(callback(it)) } }
-            cont.invokeOnCancellation { request.cancel() }
-            onError = { cont.resumeWithException(it) }
-            request.start()
-        }
-    }
-}
-
-fun UrlRequest.Builder.noCache(): UrlRequest.Builder = disableCache()
-fun UrlResponseInfo.getHeadersMap(): Map<String, List<String>> = allHeaders
@@ -0,0 +1,176 @@
+package com.hippo.ehviewer.ktor
+
+import com.hippo.ehviewer.cronet.cronetDispatcher
+import com.hippo.ehviewer.cronet.cronetHttpClient
+import com.hippo.ehviewer.cronet.cronetHttpClientExecutor
+import com.hippo.ehviewer.cronet.pool
+import io.ktor.client.engine.HttpClientEngineBase
+import io.ktor.client.engine.HttpClientEngineConfig
+import io.ktor.client.engine.callContext
+import io.ktor.client.request.HttpRequestData
+import io.ktor.client.request.HttpResponseData
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpProtocolVersion
+import io.ktor.http.HttpStatusCode
+import io.ktor.http.content.OutgoingContent
+import io.ktor.http.headers
+import io.ktor.util.date.GMTDate
+import io.ktor.util.flattenForEach
+import io.ktor.utils.io.ByteReadChannel
+import io.ktor.utils.io.InternalAPI
+import io.ktor.utils.io.pool.useInstance
+import io.ktor.utils.io.writer
+import java.nio.ByteBuffer
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+import kotlinx.coroutines.DelicateCoroutinesApi
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.channels.consumeEach
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.suspendCancellableCoroutine
+import org.chromium.net.CronetException
+import org.chromium.net.UploadDataProvider
+import org.chromium.net.UploadDataSink
+import org.chromium.net.UrlRequest
+import org.chromium.net.UrlResponseInfo
+
+object CronetEngine : HttpClientEngineBase("Cronet") {
+    override val config = HttpClientEngineConfig()
+    override val dispatcher = cronetDispatcher
+
+    @InternalAPI
+    override suspend fun execute(data: HttpRequestData): HttpResponseData {
+        val callContext = callContext()
+
+        return executeHttpRequest(callContext, data)
+    }
+
+    @OptIn(DelicateCoroutinesApi::class)
+    private suspend fun executeHttpRequest(
+        callContext: CoroutineContext,
+        data: HttpRequestData,
+    ): HttpResponseData = suspendCancellableCoroutine { continuation ->
+        val requestTime = GMTDate()
+
+        val callback = object : UrlRequest.Callback() {
+            lateinit var chunkChan: Channel<ByteBuffer>
+            override fun onRedirectReceived(request: UrlRequest, info: UrlResponseInfo, newLocationUrl: String) {
+                continuation.resume(
+                    info.toHttpResponseData(
+                        requestTime = requestTime,
+                        callContext = callContext,
+                    ),
+                )
+            }
+
+            override fun onResponseStarted(request: UrlRequest, info: UrlResponseInfo) {
+                val channel = GlobalScope.writer(callContext) {
+                    pool.useInstance {
+                        chunkChan = Channel(1)
+                        request.read(it)
+                        chunkChan.consumeEach { buffer ->
+                            buffer.flip()
+                            channel.writeFully(buffer)
+                            buffer.clear()
+                            request.read(buffer)
+                        }
+                    }
+                }.channel
+                continuation.resume(
+                    info.toHttpResponseData(
+                        requestTime = requestTime,
+                        callContext = callContext,
+                        responseBody = channel,
+                    ),
+                )
+            }
+
+            override fun onReadCompleted(request: UrlRequest, info: UrlResponseInfo, byteBuffer: ByteBuffer) {
+                chunkChan.trySend(byteBuffer).getOrThrow()
+            }
+
+            override fun onSucceeded(request: UrlRequest, info: UrlResponseInfo) {
+                chunkChan.close()
+            }
+
+            override fun onFailed(request: UrlRequest, info: UrlResponseInfo?, error: CronetException) {
+                if (::chunkChan.isInitialized) {
+                    chunkChan.close(error)
+                } else {
+                    continuation.resumeWithException(error)
+                }
+            }
+        }
+
+        val request = cronetHttpClient.newUrlRequestBuilder(data.url.toString(), callback, cronetHttpClientExecutor).apply {
+            setHttpMethod(data.method.value)
+            data.headers.flattenForEach { key, value -> addHeader(key, value) }
+            data.body.contentType?.let { addHeader(HttpHeaders.ContentType, it.toString()) }
+            data.body.contentLength?.let { addHeader(HttpHeaders.ContentLength, it.toString()) }
+            data.body.toUploadDataProvider(callContext)?.let { setUploadDataProvider(it, cronetHttpClientExecutor) }
+        }.build()
+        request.start()
+        callContext[Job]!!.invokeOnCompletion { request.cancel() }
+        continuation.invokeOnCancellation { request.cancel() }
+    }
+}
+
+private fun UrlResponseInfo.toHttpResponseData(
+    requestTime: GMTDate,
+    callContext: CoroutineContext,
+    responseBody: ByteReadChannel = ByteReadChannel.Empty,
+): HttpResponseData {
+    return HttpResponseData(
+        statusCode = HttpStatusCode.fromValue(httpStatusCode),
+        requestTime = requestTime,
+        headers = headers {
+            allHeaders.forEach { (key, value) ->
+                appendAll(key, value)
+            }
+        },
+        version = when (negotiatedProtocol) {
+            "h2" -> HttpProtocolVersion.HTTP_2_0
+            "h3" -> HttpProtocolVersion.QUIC
+            "quic/1+spdy/3" -> HttpProtocolVersion.SPDY_3
+            else -> HttpProtocolVersion.HTTP_1_1
+        },
+        body = responseBody,
+        callContext = callContext,
+    )
+}
+
+@OptIn(DelicateCoroutinesApi::class)
+private fun OutgoingContent.toUploadDataProvider(callContext: CoroutineContext): UploadDataProvider? = when (this) {
+    is OutgoingContent.NoContent -> null
+    is OutgoingContent.ByteArrayContent -> object : UploadDataProvider() {
+        val buffer = ByteBuffer.wrap(bytes()).slice()
+        override fun getLength() = buffer.limit().toLong()
+        override fun read(uploadDataSink: UploadDataSink, byteBuffer: ByteBuffer) {
+            byteBuffer.put(buffer)
+            uploadDataSink.onReadSucceeded(false)
+        }
+        override fun rewind(uploadDataSink: UploadDataSink) {
+            buffer.position(0)
+            uploadDataSink.onRewindSucceeded()
+        }
+    }
+    is OutgoingContent.WriteChannelContent -> object : UploadDataProvider() {
+        fun launch() = GlobalScope.writer(callContext) { writeTo(channel) }.channel
+        var chan = launch()
+        override fun getLength() = contentLength!!
+        override fun read(uploadDataSink: UploadDataSink, byteBuffer: ByteBuffer) {
+            GlobalScope.launch(callContext) {
+                chan.readAvailable(byteBuffer)
+                uploadDataSink.onReadSucceeded(false)
+            }
+        }
+        override fun rewind(uploadDataSink: UploadDataSink) {
+            chan = launch()
+            uploadDataSink.onRewindSucceeded()
+        }
+    }
+    else -> error("UnsupportedContentType $this")
+}
@@ -1,12 +1,11 @@
 package com.hippo.ehviewer.util

 import com.google.android.gms.net.CronetProviderInstaller
-import com.hippo.ehviewer.Settings
 import org.chromium.net.CronetProvider
 import splitties.init.appCtx

-val isCronetSupported: Boolean
-    get() = Settings.enableCronet && CronetProvider.getAllProviders(appCtx).any { it.isEnabled }.also {
+val isCronetAvailable: Boolean
+    get() = CronetProvider.getAllProviders(appCtx).any { it.isEnabled }.also {
        if (!it) {
            CronetProviderInstaller.installProvider(appCtx)
        }
@@ -23,21 +23,20 @@
        android:allowBackup="true"
        android:appCategory="image"
        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:enableOnBackInvokedCallback="true"
        android:fullBackupContent="@xml/backup_scheme"
        android:hasFragileUserData="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
+        android:largeHeap="@bool/large_heap"
        android:localeConfig="@xml/locale_config"
        android:networkSecurityConfig="@xml/network_security_config"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:targetApi="tiramisu">
-        <activity
-            android:name=".ui.ConfigureActivity"
-            android:exported="false"
-            android:launchMode="singleTask"
-            android:windowSoftInputMode="adjustResize" />
+        <profileable android:shell="true" />
+
        <activity
            android:name=".ui.MainActivity"
            android:banner="@mipmap/ic_leanback_banner"
@@ -135,8 +134,6 @@
            android:launchMode="singleTask"
            android:taskAffinity=""
            android:theme="@android:style/Theme.Translucent.NoTitleBar" />
-        <activity
-            android:name=".ui.WebViewActivity" />

        <service
            android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
@@ -24,7 +24,7 @@ set(BUILD_TESTING 0)

 FetchContent_Declare(liblzma
        GIT_REPOSITORY https://github.com/FooIbar/xz.git
-        GIT_TAG v5.4.4
+        GIT_TAG v5.4.5
        )

 FetchContent_MakeAvailable(liblzma)
@@ -76,7 +76,5 @@ FetchContent_MakeAvailable(libarchive)
 include_directories(${libarchive_SOURCE_DIR}/libarchive)

 # Build and link our app's native lib
-add_library(${PROJECT_NAME} SHARED archive.c gifutils.c natsort/strnatcmp.c)
-target_link_libraries(${PROJECT_NAME} archive_static log)
-
-add_custom_target("noop")
+add_library(${PROJECT_NAME} SHARED archive.c border.c gifutils.c natsort/strnatcmp.c)
+target_link_libraries(${PROJECT_NAME} archive_static log jnigraphics)
@@ -86,6 +86,8 @@ const char supportExt[10][6] = {
 };

 static inline int filename_is_playable_file(const char *name) {
+    if (!name)
+        return false;
    const char *dotptr = strrchr(name, '.');
    if (!dotptr++)
        return false;
@@ -105,7 +107,7 @@ static inline int compare_entries(const void *a, const void *b) {
 static long archive_map_entries_index(archive_ctx *ctx) {
    long count = 0;
    while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK) {
-        const char *name = archive_entry_pathname(ctx->entry);
+        const char *name = archive_entry_pathname_utf8(ctx->entry);
        if (filename_is_playable_file(name)) {
            entries[count].filename = strdup(name);
            entries[count].index = count;
@@ -164,7 +166,7 @@ static void mempool_release_pages(void *addr, size_t size) {
 static long archive_list_all_entries(archive_ctx *ctx) {
    long count = 0;
    while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK)
-        if (filename_is_playable_file(archive_entry_pathname(ctx->entry)))
+        if (filename_is_playable_file(archive_entry_pathname_utf8(ctx->entry)))
            count++;
    if (!count)
        LOGE("%s", archive_error_string(ctx->arc));
@@ -212,7 +214,7 @@ static int archive_alloc_ctx(archive_ctx **ctxptr) {

 static int archive_skip_to_index(archive_ctx *ctx, int index) {
    while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK) {
-        if (!filename_is_playable_file(archive_entry_pathname(ctx->entry)))
+        if (!filename_is_playable_file(archive_entry_pathname_utf8(ctx->entry)))
            continue;
        if (ctx->next_index++ == index) {
            return ctx->next_index - 1;
@@ -431,7 +433,7 @@ Java_com_hippo_ehviewer_jni_ArchiveKt_providePassword(JNIEnv *env, jclass thiz,
    archive_alloc_ctx(&ctx);
    void *tmpBuf = alloca(4096);
    while (archive_read_next_header(ctx->arc, &entry) == ARCHIVE_OK) {
-        if (!filename_is_playable_file(archive_entry_pathname(entry)))
+        if (!filename_is_playable_file(archive_entry_pathname_utf8(entry)))
            continue;
        if (!archive_entry_is_encrypted(entry))
            continue;
@@ -456,7 +458,7 @@ Java_com_hippo_ehviewer_jni_ArchiveKt_getFilename(JNIEnv *env, jclass thiz,
    ret = archive_get_ctx(&ctx, index);
    if (ret)
        return NULL;
-    jstring str = (*env)->NewStringUTF(env, archive_entry_pathname(ctx->entry));
+    jstring str = (*env)->NewStringUTF(env, archive_entry_pathname_utf8(ctx->entry));
    ctx->using = 0;
    return str;
 }
@@ -0,0 +1,241 @@
+#include <jni.h>
+#include <math.h>
+#include <stdbool.h>
+#include <android/bitmap.h>
+#include <stdlib.h>
+#include <string.h>
+
+/** A line will be considered as having content if 0.25% of it is filled. */
+const float filledRatioLimit = 0.0025;
+
+/** When the threshold is closer to 1, less content will be cropped. **/
+#define THRESHOLD 0.75
+
+const uint8_t thresholdForBlack = (uint8_t) (255.0 * THRESHOLD);
+
+const uint8_t thresholdForWhite = (uint8_t) (255.0 - 255.0 * THRESHOLD);
+
+static uint8_t inline grey(uint32_t pixel) {
+    const uint8_t r = ((uint8_t *) &pixel)[0];
+    const uint8_t g = ((uint8_t *) &pixel)[1];
+    const uint8_t b = ((uint8_t *) &pixel)[2];
+    return (r * 77 + g * 151 + b * 28) >> 8;
+}
+
+static bool inline isBlackPixel(const uint32_t *pixels, uint32_t width, uint32_t x, uint32_t y) {
+    const uint32_t pixel = *((uint32_t *) pixels + (y * width + x));
+    return grey(pixel) < thresholdForBlack;
+}
+
+static bool inline isWhitePixel(const uint32_t *pixels, uint32_t width, uint32_t x, uint32_t y) {
+    const uint32_t pixel = *((uint32_t *) pixels + (y * width + x));
+    return grey(pixel) > thresholdForWhite;
+}
+
+/** Return the first x position where there is a substantial amount of fill,
+ * starting the search from the left. */
+uint32_t findBorderLeft(uint32_t *pixels, uint32_t width, uint32_t height,
+                        uint32_t top, uint32_t bottom) {
+    int x, y;
+    const uint32_t filledLimit = round(height * filledRatioLimit / 2);
+
+    // Scan first line to detect dominant color
+    uint32_t whitePixels = 0;
+    uint32_t blackPixels = 0;
+
+    for (y = top; y < bottom; y += 2) {
+        if (isBlackPixel(pixels, width, 0, y)) {
+            blackPixels++;
+        } else if (isWhitePixel(pixels, width, 0, y)) {
+            whitePixels++;
+        }
+    }
+
+    bool (*detectFunc)(const uint32_t *, uint32_t, uint32_t, uint32_t) = isBlackPixel;
+    if (whitePixels > filledLimit && blackPixels > filledLimit) {
+        // Mixed fill found... don't crop anything
+        return 0;
+    } else if (blackPixels > filledLimit) {
+        detectFunc = isWhitePixel;
+    }
+
+    // Scan vertical lines in search of filled lines
+    for (x = 1; x < width; x++) {
+        uint32_t filledCount = 0;
+
+        for (y = top; y < bottom; y += 2) {
+            if (detectFunc(pixels, width, x, y)) {
+                filledCount++;
+            }
+        }
+
+        if (filledCount > filledLimit) {
+            // This line contains enough fill
+            return x;
+        }
+    }
+
+    // No fill found... don't crop anything
+    return 0;
+}
+
+/** Return the first x position where there is a substantial amount of fill,
+ * starting the search from the right. */
+uint32_t findBorderRight(uint32_t *pixels, uint32_t width, uint32_t height,
+                         uint32_t top, uint32_t bottom) {
+    int x, y;
+    const uint32_t filledLimit = round(height * filledRatioLimit / 2);
+
+    // Scan first line to detect dominant color
+    uint32_t whitePixels = 0;
+    uint32_t blackPixels = 0;
+
+    uint32_t lastX = width - 1;
+    for (y = top; y < bottom; y += 2) {
+        if (isBlackPixel(pixels, width, lastX, y)) {
+            blackPixels++;
+        } else if (isWhitePixel(pixels, width, lastX, y)) {
+            whitePixels++;
+        }
+    }
+
+    bool (*detectFunc)(const uint32_t *, uint32_t, uint32_t, uint32_t) = isBlackPixel;
+    if (whitePixels > filledLimit && blackPixels > filledLimit) {
+        // Mixed fill found... don't crop anything
+        return width;
+    } else if (blackPixels > filledLimit) {
+        detectFunc = isWhitePixel;
+    }
+
+    // Scan vertical lines in search of filled lines
+    for (x = width - 2; x > 0; x--) {
+        uint32_t filledCount = 0;
+
+        for (y = top; y < bottom; y += 2) {
+            if (detectFunc(pixels, width, x, y)) {
+                filledCount++;
+            }
+        }
+
+        if (filledCount > filledLimit) {
+            // This line contains enough fill
+            return x + 1;
+        }
+    }
+
+    // No fill found... don't crop anything
+    return width;
+}
+
+/** Return the first y position where there is a substantial amount of fill,
+ * starting the search from the top. */
+uint32_t findBorderTop(uint32_t *pixels, uint32_t width, uint32_t height) {
+    int x, y;
+    const uint32_t filledLimit = round(width * filledRatioLimit / 2);
+
+    // Scan first line to detect dominant color
+    uint32_t whitePixels = 0;
+    uint32_t blackPixels = 0;
+
+    for (x = 0; x < width; x += 2) {
+        if (isBlackPixel(pixels, width, x, 0)) {
+            blackPixels++;
+        } else if (isWhitePixel(pixels, width, x, 0)) {
+            whitePixels++;
+        }
+    }
+
+    bool (*detectFunc)(const uint32_t *, uint32_t, uint32_t, uint32_t) = isBlackPixel;
+    if (whitePixels > filledLimit && blackPixels > filledLimit) {
+        // Mixed fill found... don't crop anything
+        return 0;
+    } else if (blackPixels > filledLimit) {
+        detectFunc = isWhitePixel;
+    }
+
+    // Scan horizontal lines in search of filled lines
+    for (y = 1; y < height; y++) {
+        uint32_t filledCount = 0;
+
+        for (x = 0; x < width; x += 2) {
+            if (detectFunc(pixels, width, x, y)) {
+                filledCount++;
+            }
+        }
+
+        if (filledCount > filledLimit) {
+            // This line contains enough fill
+            return y;
+        }
+    }
+
+    // No fill found... don't crop anything
+    return 0;
+}
+
+/** Return the first y position where there is a substantial amount of fill,
+ * starting the search from the bottom. */
+uint32_t findBorderBottom(uint32_t *pixels, uint32_t width, uint32_t height) {
+    int x, y;
+    const uint32_t filledLimit = round(width * filledRatioLimit / 2);
+
+    // Scan first line to detect dominant color
+    uint32_t whitePixels = 0;
+    uint32_t blackPixels = 0;
+    uint32_t lastY = height - 1;
+
+    for (x = 0; x < width; x += 2) {
+        if (isBlackPixel(pixels, width, x, lastY)) {
+            blackPixels++;
+        } else if (isWhitePixel(pixels, width, x, lastY)) {
+            whitePixels++;
+        }
+    }
+
+    bool (*detectFunc)(const uint32_t *, uint32_t, uint32_t, uint32_t) = isBlackPixel;
+    if (whitePixels > filledLimit && blackPixels > filledLimit) {
+        // Mixed fill found... don't crop anything
+        return height;
+    } else if (blackPixels > filledLimit) {
+        detectFunc = isWhitePixel;
+    }
+
+    // Scan horizontal lines in search of filled lines
+    for (y = height - 2; y > 0; y--) {
+        uint32_t filledCount = 0;
+
+        for (x = 0; x < width; x += 2) {
+            if (detectFunc(pixels, width, x, y)) {
+                filledCount++;
+            }
+        }
+
+        if (filledCount > filledLimit) {
+            // This line contains enough fill
+            return y + 1;
+        }
+    }
+
+    // No fill found... don't crop anything
+    return height;
+}
+
+JNIEXPORT jintArray JNICALL
+Java_com_hippo_ehviewer_image_ImageKt_detectBorder(JNIEnv *env, jclass clazz, jobject bitmap) {
+    void *pixels = NULL;
+    AndroidBitmapInfo info;
+    memset(&info, 0, sizeof(info));
+    AndroidBitmap_getInfo(env, bitmap, &info);
+    AndroidBitmap_lockPixels(env, bitmap, &pixels);
+    uint32_t width = info.width;
+    uint32_t height = info.height;
+    uint32_t top = findBorderTop(pixels, width, height);
+    uint32_t bottom = findBorderBottom(pixels, width, height);
+    uint32_t left = findBorderLeft(pixels, width, height, top, bottom);
+    uint32_t right = findBorderRight(pixels, width, height, top, bottom);
+    int array[4] = {left, top, right, bottom};
+    AndroidBitmap_unlockPixels(env, bitmap);
+    jintArray ret = (*env)->NewIntArray(env, 4);
+    (*env)->SetIntArrayRegion(env, ret, 0, 4, array);
+    return ret;
+}
@@ -0,0 +1,537 @@
+@file:Suppress("ktlint:standard:property-naming", "ktlint:standard:function-naming")
+
+package androidx.compose.material3
+
+import androidx.compose.animation.core.AnimationSpec
+import androidx.compose.animation.core.TweenSpec
+import androidx.compose.animation.core.animate
+import androidx.compose.animation.core.exponentialDecay
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.AnchoredDraggableState
+import androidx.compose.foundation.gestures.DraggableAnchors
+import androidx.compose.foundation.gestures.awaitEachGesture
+import androidx.compose.foundation.gestures.awaitFirstDown
+import androidx.compose.foundation.gestures.awaitHorizontalTouchSlopOrCancellation
+import androidx.compose.foundation.gestures.detectTapGestures
+import androidx.compose.foundation.gestures.horizontalDrag
+import androidx.compose.foundation.gestures.snapTo
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.shape.CornerSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.saveable.Saver
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshotFlow
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.BlurEffect
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.RectangleShape
+import androidx.compose.ui.graphics.TileMode
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.input.pointer.positionChange
+import androidx.compose.ui.input.pointer.util.VelocityTracker
+import androidx.compose.ui.input.pointer.util.addPointerInputChange
+import androidx.compose.ui.layout.layout
+import androidx.compose.ui.layout.onGloballyPositioned
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalLayoutDirection
+import androidx.compose.ui.unit.Constraints
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.util.lerp
+import com.hippo.ehviewer.ui.tools.animateFloatMergeOneWayPredictiveBackAsState
+import kotlin.math.roundToInt
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.launch
+
+private val AnimationSpec = TweenSpec<Float>(durationMillis = 256)
+private const val DrawerPositionalThreshold = 0.5f
+private val DrawerVelocityThreshold = 400.dp
+private val ContainerWidth = 360.0.dp
+
+@Suppress("NotCloseable")
+@Stable
+class DrawerState2(
+    initialValue: DrawerValue,
+    val confirmStateChange: (DrawerValue) -> Boolean = { true },
+) {
+
+    val anchoredDraggableState = AnchoredDraggableState(
+        initialValue = initialValue,
+        snapAnimationSpec = AnimationSpec,
+        decayAnimationSpec = exponentialDecay(7.5f),
+        confirmValueChange = confirmStateChange,
+        positionalThreshold = { distance -> distance * DrawerPositionalThreshold },
+        velocityThreshold = { with(requireDensity()) { DrawerVelocityThreshold.toPx() } },
+    )
+
+    /**
+     * Whether the drawer is open.
+     */
+    val isOpen: Boolean
+        get() = currentValue == DrawerValue.Open
+
+    /**
+     * Whether the drawer is closed.
+     */
+    val isClosed: Boolean
+        get() = currentValue == DrawerValue.Closed
+
+    /**
+     * The current value of the state.
+     *
+     * If no swipe or animation is in progress, this corresponds to the start the drawer
+     * currently in. If a swipe or an animation is in progress, this corresponds the state drawer
+     * was in before the swipe or animation started.
+     */
+    val currentValue: DrawerValue
+        get() {
+            return anchoredDraggableState.currentValue
+        }
+
+    /**
+     * Whether the state is currently animating.
+     */
+    val isAnimationRunning: Boolean
+        get() {
+            return anchoredDraggableState.isAnimationRunning
+        }
+
+    /**
+     * Open the drawer with animation and suspend until it if fully opened or animation has been
+     * cancelled. This method will throw [CancellationException] if the animation is
+     * interrupted
+     *
+     * @return the reason the open animation ended
+     */
+    suspend fun open() = animateTo(DrawerValue.Open)
+
+    /**
+     * Close the drawer with animation and suspend until it if fully closed or animation has been
+     * cancelled. This method will throw [CancellationException] if the animation is
+     * interrupted
+     *
+     * @return the reason the close animation ended
+     */
+    suspend fun close() = animateTo(DrawerValue.Closed)
+
+    /**
+     * Set the state of the drawer with specific animation
+     *
+     * @param targetValue The new value to animate to.
+     * @param anim The animation that will be used to animate to the new value.
+     */
+    @Deprecated(
+        message = "This method has been replaced by the open and close methods. The animation " +
+            "spec is now an implementation detail of ModalDrawer.",
+    )
+    suspend fun animateTo(targetValue: DrawerValue, anim: AnimationSpec<Float>) {
+        animateTo(targetValue = targetValue, animationSpec = anim)
+    }
+
+    /**
+     * Set the state without any animation and suspend until it's set
+     *
+     * @param targetValue The new target value
+     */
+    suspend fun snapTo(targetValue: DrawerValue) {
+        anchoredDraggableState.snapTo(targetValue)
+    }
+
+    /**
+     * The target value of the drawer state.
+     *
+     * If a swipe is in progress, this is the value that the Drawer would animate to if the
+     * swipe finishes. If an animation is running, this is the target value of that animation.
+     * Finally, if no swipe or animation is in progress, this is the same as the [currentValue].
+     */
+    val targetValue: DrawerValue
+        get() = anchoredDraggableState.targetValue
+
+    /**
+     * The current position (in pixels) of the drawer sheet, or Float.NaN before the offset is
+     * initialized.
+     *
+     * @see [AnchoredDraggableState.offset] for more information.
+     */
+    @Deprecated(
+        message = "Please access the offset through currentOffset, which returns the value " +
+            "directly instead of wrapping it in a state object.",
+        replaceWith = ReplaceWith("currentOffset"),
+    )
+    val offset: State<Float> = object : State<Float> {
+        override val value: Float get() = anchoredDraggableState.offset
+    }
+
+    /**
+     * The current position (in pixels) of the drawer sheet, or Float.NaN before the offset is
+     * initialized.
+     *
+     * @see [AnchoredDraggableState.offset] for more information.
+     */
+    val currentOffset: Float get() = anchoredDraggableState.offset
+
+    internal var density: Density? by mutableStateOf(null)
+
+    private fun requireDensity() = requireNotNull(density) {
+        "The density on BottomDrawerState ($this) was not set. Did you use BottomDrawer" +
+            " with the BottomDrawer composable?"
+    }
+
+    internal fun requireOffset(): Float = anchoredDraggableState.requireOffset()
+
+    private suspend fun animateTo(
+        targetValue: DrawerValue,
+        animationSpec: AnimationSpec<Float> = AnimationSpec,
+        velocity: Float = anchoredDraggableState.lastVelocity,
+    ) {
+        anchoredDraggableState.anchoredDrag(targetValue = targetValue) { anchors, latestTarget ->
+            val targetOffset = anchors.positionOf(latestTarget)
+            if (!targetOffset.isNaN()) {
+                var prev = if (currentOffset.isNaN()) 0f else currentOffset
+                animate(prev, targetOffset, velocity, animationSpec) { value, velocity ->
+                    // Our onDrag coerces the value within the bounds, but an animation may
+                    // overshoot, for example a spring animation or an overshooting interpolator
+                    // We respect the user's intention and allow the overshoot, but still use
+                    // DraggableState's drag for its mutex.
+                    dragTo(value, velocity)
+                    prev = value
+                }
+            }
+        }
+    }
+
+    companion object {
+        /**
+         * The default [Saver] implementation for [DrawerState2].
+         */
+        fun Saver(confirmStateChange: (DrawerValue) -> Boolean) =
+            Saver<DrawerState2, DrawerValue>(
+                save = { it.currentValue },
+                restore = { DrawerState2(it, confirmStateChange) },
+            )
+    }
+}
+
+/**
+ * Create and [remember] a [DrawerState2].
+ *
+ * @param initialValue The initial value of the state.
+ * @param confirmStateChange Optional callback invoked to confirm or veto a pending state change.
+ */
+@Composable
+fun rememberDrawerState(
+    initialValue: DrawerValue,
+    confirmStateChange: (DrawerValue) -> Boolean = { true },
+): DrawerState2 {
+    return rememberSaveable(saver = DrawerState2.Saver(confirmStateChange)) {
+        DrawerState2(initialValue, confirmStateChange)
+    }
+}
+
+@Composable
+fun ModalNavigationDrawer(
+    drawerContent: @Composable () -> Unit,
+    modifier: Modifier = Modifier,
+    drawerState: DrawerState2 = rememberDrawerState(DrawerValue.Closed),
+    gesturesEnabled: Boolean = true,
+    scrimColor: Color = DrawerDefaults.scrimColor,
+    content: @Composable () -> Unit,
+) {
+    val scope = rememberCoroutineScope()
+    val density = LocalDensity.current
+    var minValue by remember { mutableFloatStateOf(-with(density) { ContainerWidth.toPx() }) }
+    val maxValue = 0f
+
+    SideEffect {
+        drawerState.density = density
+        drawerState.anchoredDraggableState.updateAnchors(
+            DraggableAnchors {
+                DrawerValue.Closed at minValue
+                DrawerValue.Open at maxValue
+            },
+        )
+    }
+
+    val isRtl = LocalLayoutDirection.current == LayoutDirection.Rtl
+    val velocityTracker = remember { VelocityTracker() }
+    val dragModifier = if (gesturesEnabled) {
+        Modifier.pointerInput(isRtl) {
+            val multiplier = if (isRtl) -1 else 1
+            awaitEachGesture {
+                fun canConsume(slop: Float) = (slop > 0 && drawerState.isClosed) || (slop < 0 && drawerState.isOpen)
+                val down = awaitFirstDown(requireUnconsumed = false)
+                var ignore = false
+                val drag = awaitHorizontalTouchSlopOrCancellation(down.id) { change, over ->
+                    val overSlop = over * multiplier
+                    val canConsume = canConsume(overSlop)
+                    if (canConsume && !ignore) {
+                        velocityTracker.addPointerInputChange(change)
+                        change.consume()
+                        drawerState.anchoredDraggableState.dispatchRawDelta(overSlop)
+                    } else {
+                        ignore = true
+                    }
+                }
+                if (drag != null) {
+                    horizontalDrag(drag.id) {
+                        velocityTracker.addPointerInputChange(it)
+                        drawerState.anchoredDraggableState.dispatchRawDelta(it.positionChange().x * multiplier)
+                    }
+                    val velocity = velocityTracker.calculateVelocity()
+                    velocityTracker.resetTracking()
+                    scope.launch {
+                        drawerState.anchoredDraggableState.settle(velocity.x * multiplier)
+                    }
+                }
+            }
+        }
+    } else {
+        Modifier
+    }
+    Box(modifier.fillMaxSize().then(dragModifier)) {
+        val radius by remember {
+            snapshotFlow {
+                val step = calculateFraction(minValue, maxValue, drawerState.currentOffset)
+                lerp(0, 10, step).dp
+            }
+        }.collectAsState(0.dp)
+        val blurModifier = Modifier.graphicsLayer {
+            if (radius != 0.dp) {
+                renderEffect = BlurEffect(radius.toPx(), radius.toPx(), TileMode.Clamp)
+                shape = RectangleShape
+                clip = true
+            }
+        }
+        Box(modifier = blurModifier) {
+            content()
+        }
+        Scrim(
+            open = drawerState.isOpen,
+            onClose = {
+                if (gesturesEnabled && drawerState.confirmStateChange(DrawerValue.Closed)) {
+                    scope.launch { drawerState.close() }
+                }
+            },
+            fraction = {
+                calculateFraction(minValue, maxValue, drawerState.requireOffset())
+            },
+            color = scrimColor,
+        )
+        val predictiveState by animateFloatMergeOneWayPredictiveBackAsState(drawerState.isOpen) {
+            drawerState.close()
+        }
+        val absoluteElevation = LocalAbsoluteTonalElevation.current + DrawerDefaults.ModalDrawerElevation
+        val predictiveModifier = if (drawerState.isOpen) {
+            if (predictiveState > 0) {
+                Modifier.layout { measurable, constraints ->
+                    val placeable = measurable.measure(constraints)
+                    val multiplierX = lerp(1f, 1.05f, predictiveState)
+                    val multiplierY = lerp(1f, 0.95f, predictiveState)
+                    val scaledWidth = (multiplierX * placeable.width).roundToInt()
+                    val scaledHeight = (multiplierY * placeable.height).roundToInt()
+                    val reMeasured = measurable.measure(Constraints.fixed(scaledWidth, scaledHeight))
+                    layout(scaledWidth, scaledHeight) {
+                        reMeasured.placeRelative(scaledWidth - placeable.width, 0)
+                    }
+                }.background(
+                    color = MaterialTheme.colorScheme.surfaceColorAtElevation(absoluteElevation),
+                    shape = DrawerDefaults.shape,
+                )
+            } else {
+                Modifier.graphicsLayer {
+                    val scale = lerp(1f, 0.95f, -predictiveState)
+                    scaleX = scale
+                    scaleY = scale
+                }.offset {
+                    IntOffset(lerp(0f, minValue * 0.05f, -predictiveState).roundToInt(), 0)
+                }
+            }
+        } else {
+            Modifier.onGloballyPositioned {
+                val w = it.size.width
+                if (w != 0) {
+                    minValue = -it.size.width.toFloat()
+                }
+            }
+        }
+        Box(
+            modifier = Modifier.offset {
+                IntOffset(drawerState.requireOffset().roundToInt(), 0)
+            } then predictiveModifier.align(Alignment.CenterStart),
+            contentAlignment = Alignment.CenterEnd,
+        ) {
+            drawerContent()
+        }
+    }
+}
+
+@Composable
+fun SideDrawer(
+    drawerContent: @Composable () -> Unit,
+    modifier: Modifier = Modifier,
+    drawerState: DrawerState2 = rememberDrawerState(DrawerValue.Closed),
+    gesturesEnabled: Boolean = true,
+    scrimColor: Color = DrawerDefaults.scrimColor,
+    content: @Composable () -> Unit,
+) {
+    val scope = rememberCoroutineScope()
+    val density = LocalDensity.current
+    var minValue by remember { mutableFloatStateOf(with(density) { ContainerWidth.toPx() }) }
+    val maxValue = 0f
+
+    SideEffect {
+        drawerState.density = density
+        drawerState.anchoredDraggableState.updateAnchors(
+            DraggableAnchors {
+                DrawerValue.Closed at minValue
+                DrawerValue.Open at maxValue
+            },
+        )
+    }
+
+    val isRtl = LocalLayoutDirection.current == LayoutDirection.Rtl
+    val velocityTracker = remember { VelocityTracker() }
+    val dragModifier = if (gesturesEnabled) {
+        Modifier.pointerInput(isRtl) {
+            val multiplier = if (isRtl) -1 else 1
+            awaitEachGesture {
+                fun canConsume(slop: Float) = (slop > 0 && drawerState.isOpen) || (slop < 0 && drawerState.isClosed)
+                val down = awaitFirstDown(requireUnconsumed = false)
+                var ignore = false
+                val drag = awaitHorizontalTouchSlopOrCancellation(down.id) { change, over ->
+                    val overSlop = over * multiplier
+                    val canConsume = canConsume(overSlop)
+                    if (canConsume && !ignore) {
+                        velocityTracker.addPointerInputChange(change)
+                        change.consume()
+                        drawerState.anchoredDraggableState.dispatchRawDelta(overSlop)
+                    } else {
+                        ignore = true
+                    }
+                }
+                if (drag != null) {
+                    horizontalDrag(drag.id) {
+                        velocityTracker.addPointerInputChange(it)
+                        drag.consume()
+                        drawerState.anchoredDraggableState.dispatchRawDelta(it.positionChange().x * multiplier)
+                    }
+                    val velocity = velocityTracker.calculateVelocity()
+                    velocityTracker.resetTracking()
+                    scope.launch {
+                        drawerState.anchoredDraggableState.settle(velocity.x * multiplier)
+                    }
+                }
+            }
+        }
+    } else {
+        Modifier
+    }
+    Box(modifier.fillMaxSize().then(dragModifier)) {
+        val radius by remember {
+            snapshotFlow {
+                val step = calculateFraction(minValue, maxValue, drawerState.currentOffset)
+                lerp(0, 10, step).dp
+            }
+        }.collectAsState(0.dp)
+        val blurModifier = Modifier.graphicsLayer {
+            if (radius != 0.dp) {
+                renderEffect = BlurEffect(radius.toPx(), radius.toPx(), TileMode.Clamp)
+                shape = RectangleShape
+                clip = true
+            }
+        }
+        Box(modifier = blurModifier) {
+            content()
+        }
+        Scrim(
+            open = drawerState.isOpen,
+            onClose = {
+                if (gesturesEnabled && drawerState.confirmStateChange(DrawerValue.Closed)) {
+                    scope.launch { drawerState.close() }
+                }
+            },
+            fraction = {
+                calculateFraction(minValue, maxValue, drawerState.requireOffset())
+            },
+            color = scrimColor,
+        )
+        val predictiveState by animateFloatMergeOneWayPredictiveBackAsState(drawerState.isOpen) {
+            drawerState.close()
+        }
+        val absoluteElevation = LocalAbsoluteTonalElevation.current + DrawerDefaults.ModalDrawerElevation
+        val predictiveModifier = if (drawerState.isOpen) {
+            if (predictiveState < 0) {
+                Modifier.layout { measurable, constraints ->
+                    val placeable = measurable.measure(constraints)
+                    val multiplierX = lerp(1f, 1.05f, -predictiveState)
+                    val multiplierY = lerp(1f, 0.95f, -predictiveState)
+                    val scaledWidth = (multiplierX * placeable.width).roundToInt()
+                    val scaledHeight = (multiplierY * placeable.height).roundToInt()
+                    val reMeasured = measurable.measure(Constraints.fixed(scaledWidth, scaledHeight))
+                    layout(scaledWidth, scaledHeight) {
+                        reMeasured.placeRelative(-(scaledWidth - placeable.width), 0)
+                    }
+                }.background(
+                    color = MaterialTheme.colorScheme.surfaceColorAtElevation(absoluteElevation),
+                    shape = ShapeDefaults.Large.copy(topEnd = CornerSize(0), bottomEnd = CornerSize(0)),
+                )
+            } else {
+                Modifier.graphicsLayer {
+                    val scale = lerp(1f, 0.95f, predictiveState)
+                    scaleX = scale
+                    scaleY = scale
+                }.offset {
+                    IntOffset(lerp(0f, minValue * 0.05f, predictiveState).roundToInt(), 0)
+                }
+            }
+        } else {
+            Modifier.onGloballyPositioned {
+                val w = it.size.width
+                if (w != 0) {
+                    minValue = it.size.width.toFloat()
+                }
+            }
+        }
+        Box(
+            modifier = Modifier.offset {
+                IntOffset(drawerState.requireOffset().roundToInt(), 0)
+            }.align(Alignment.CenterEnd) then predictiveModifier,
+            contentAlignment = Alignment.CenterStart,
+        ) {
+            drawerContent()
+        }
+    }
+}
+
+@Suppress("SameParameterValue")
+private fun calculateFraction(a: Float, b: Float, pos: Float) = ((pos - a) / (b - a)).coerceIn(0f, 1f)
+
+@Composable
+private fun Scrim(open: Boolean, onClose: () -> Unit, fraction: () -> Float, color: Color) {
+    val dismissDrawer = if (open) {
+        Modifier.pointerInput(onClose) { detectTapGestures { onClose() } }
+    } else {
+        Modifier
+    }
+
+    Canvas(Modifier.fillMaxSize().then(dismissDrawer)) {
+        drawRect(color, alpha = fraction())
+    }
+}
@@ -0,0 +1,502 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+@file:Suppress("ktlint:standard:property-naming")
+
+package androidx.compose.material3
+
+import androidx.activity.BackEventCompat
+import androidx.activity.compose.PredictiveBackHandler
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.CubicBezierEasing
+import androidx.compose.animation.core.EaseOut
+import androidx.compose.animation.core.FiniteAnimationSpec
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.MutatorMutex
+import androidx.compose.foundation.interaction.Interaction
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsFocusedAsState
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ColumnScope
+import androidx.compose.foundation.layout.MutableWindowInsets
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.asPaddingValues
+import androidx.compose.foundation.layout.consumeWindowInsets
+import androidx.compose.foundation.layout.exclude
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.layout.onConsumedWindowInsetsChanged
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.GenericShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.text2.BasicTextField2
+import androidx.compose.foundation.text2.input.TextFieldLineLimits
+import androidx.compose.foundation.text2.input.TextFieldState
+import androidx.compose.material3.SearchBarDefaults.InputFieldHeight
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.structuralEqualityPolicy
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.geometry.CornerRadius
+import androidx.compose.ui.geometry.RoundRect
+import androidx.compose.ui.geometry.toRect
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.graphics.takeOrElse
+import androidx.compose.ui.layout.layout
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.semantics.onClick
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.unit.Constraints
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.lerp
+import androidx.compose.ui.unit.offset
+import androidx.compose.ui.util.lerp
+import androidx.compose.ui.zIndex
+import kotlin.math.abs
+import kotlin.math.max
+import kotlin.math.min
+import kotlin.math.roundToInt
+import kotlin.math.sign
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.delay
+
+/**
+ * <a href="https://m3.material.io/components/search/overview" class="external" target="_blank">Material Design search</a>.
+ *
+ * A search bar represents a floating search field that allows users to enter a keyword or phrase
+ * and get relevant information. It can be used as a way to navigate through an app via search
+ * queries.
+ *
+ * An active search bar expands into a search "view" and can be used to display dynamic suggestions.
+ *
+ * ![Search bar image](https://developer.android.com/images/reference/androidx/compose/material3/search-bar.png)
+ *
+ * A [SearchBar] expands to occupy the entirety of its allowed size when active. For full-screen
+ * behavior as specified by Material guidelines, parent layouts of the [SearchBar] must not pass
+ * any [Constraints] that limit its size, and the host activity should set
+ * `WindowCompat.setDecorFitsSystemWindows(window, false)`.
+ *
+ * If this expansion behavior is undesirable, for example on large tablet screens, [DockedSearchBar]
+ * can be used instead.
+ *
+ * @param state the query text to be shown in the search bar's input field
+ * @param onSearch the callback to be invoked when the input service triggers the [ImeAction.Search]
+ * action.
+ * @param active whether this search bar is active
+ * @param onActiveChange the callback to be invoked when this search bar's active state is changed
+ * @param modifier the [Modifier] to be applied to this search bar
+ * @param enabled controls the enabled state of this search bar. When `false`, this component will
+ * not respond to user input, and it will appear visually disabled and disabled to accessibility
+ * services.
+ * @param placeholder the placeholder to be displayed when the search bar's query is empty.
+ * @param leadingIcon the leading icon to be displayed at the beginning of the search bar container
+ * @param trailingIcon the trailing icon to be displayed at the end of the search bar container
+ * @param shape the shape of this search bar when it is not [active]. When [active], the shape will
+ * always be [SearchBarDefaults.fullScreenShape].
+ * @param colors [SearchBarColors] that will be used to resolve the colors used for this search bar
+ * in different states. See [SearchBarDefaults.colors].
+ * @param tonalElevation when [SearchBarColors.containerColor] is [ColorScheme.surface], a
+ * translucent primary color overlay is applied on top of the container. A higher tonal elevation
+ * value will result in a darker color in light theme and lighter color in dark theme. See also:
+ * [Surface].
+ * @param shadowElevation the elevation for the shadow below the search bar
+ * @param windowInsets the window insets that the search bar will respect
+ * @param interactionSource the [MutableInteractionSource] representing the stream of [Interaction]s
+ * for this search bar. You can create and pass in your own `remember`ed instance to observe
+ * [Interaction]s and customize the appearance / behavior of this search bar in different states.
+ * @param content the content of this search bar that will be displayed below the input field
+ */
+@ExperimentalMaterial3Api
+@Composable
+fun SearchBar(
+    state: TextFieldState,
+    onSearch: () -> Unit,
+    active: Boolean,
+    onActiveChange: (Boolean) -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    title: @Composable (() -> Unit)? = null,
+    placeholder: @Composable (() -> Unit)? = null,
+    leadingIcon: @Composable (() -> Unit)? = null,
+    trailingIcon: @Composable (() -> Unit)? = null,
+    shape: Shape = SearchBarDefaults.inputFieldShape,
+    colors: SearchBarColors = SearchBarDefaults.colors(),
+    tonalElevation: Dp = SearchBarDefaults.TonalElevation,
+    shadowElevation: Dp = SearchBarDefaults.ShadowElevation,
+    windowInsets: WindowInsets = SearchBarDefaults.windowInsets,
+    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
+    content: @Composable ColumnScope.() -> Unit,
+) {
+    val animationProgress = remember { Animatable(initialValue = if (active) 1f else 0f) }
+    var firstBackEvent by remember { mutableStateOf<BackEventCompat?>(null) }
+    var currentBackEvent by remember { mutableStateOf<BackEventCompat?>(null) }
+
+    val focusManager = LocalFocusManager.current
+    val density = LocalDensity.current
+
+    val defaultInputFieldShape = SearchBarDefaults.inputFieldShape
+    val defaultFullScreenShape = SearchBarDefaults.fullScreenShape
+    val useFullScreenShape by remember {
+        derivedStateOf(structuralEqualityPolicy()) { animationProgress.value == 1f }
+    }
+    val animatedShape = remember(useFullScreenShape, shape) {
+        when {
+            shape == defaultInputFieldShape ->
+                // The shape can only be animated if it's the default spec value
+                GenericShape { size, _ ->
+                    val radius = with(density) {
+                        (SearchBarCornerRadius * (1 - animationProgress.value)).toPx()
+                    }
+                    addRoundRect(RoundRect(size.toRect(), CornerRadius(radius)))
+                }
+            useFullScreenShape -> defaultFullScreenShape
+            else -> shape
+        }
+    }
+
+    // The main animation complexity is allowing the component to smoothly expand while keeping the
+    // input field at the same relative location on screen. `Modifier.windowInsetsPadding` does not
+    // support animation and thus is not suitable. Instead, we convert the insets to a padding
+    // applied to the Surface, which gradually becomes padding applied to the input field as the
+    // animation proceeds.
+    val unconsumedInsets = remember { MutableWindowInsets() }
+    val topPadding = remember(density) {
+        derivedStateOf {
+            SearchBarVerticalPadding +
+                unconsumedInsets.asPaddingValues(density).calculateTopPadding()
+        }
+    }
+
+    Surface(
+        shape = animatedShape,
+        color = colors.containerColor,
+        contentColor = contentColorFor(colors.containerColor),
+        tonalElevation = tonalElevation,
+        shadowElevation = shadowElevation,
+        modifier = modifier
+            .padding(horizontal = lerp(SearchBarHorizontalPadding, 0.dp, animationProgress.value))
+            .zIndex(1f)
+            .onConsumedWindowInsetsChanged { consumedInsets ->
+                unconsumedInsets.insets = windowInsets.exclude(consumedInsets)
+            }
+            .consumeWindowInsets(unconsumedInsets)
+            .layout { measurable, constraints ->
+                val animatedTopPadding =
+                    lerp(topPadding.value, 0.dp, animationProgress.value).roundToPx()
+
+                val startWidth: Int
+                val startHeight: Int
+                if (currentBackEvent == null) {
+                    startWidth = max(constraints.minWidth, SearchBarMinWidth.roundToPx())
+                        .coerceAtMost(min(constraints.maxWidth, SearchBarMaxWidth.roundToPx()))
+                    startHeight = max(constraints.minHeight, InputFieldHeight.roundToPx())
+                        .coerceAtMost(constraints.maxHeight)
+                } else {
+                    startWidth =
+                        (constraints.maxWidth * SearchBarPredictiveBackMinScale).roundToInt()
+                    startHeight =
+                        (constraints.maxHeight * SearchBarPredictiveBackMinScale).roundToInt()
+                }
+                val endWidth = constraints.maxWidth
+                val endHeight = constraints.maxHeight
+
+                val width = lerp(startWidth, endWidth, animationProgress.value)
+                val height =
+                    lerp(startHeight, endHeight, animationProgress.value) + animatedTopPadding
+
+                val minOffsetMargin = SearchBarPredictiveBackMinMargin.roundToPx()
+                val predictiveBackOffsetX = calculatePredictiveBackOffsetX(
+                    constraints,
+                    minOffsetMargin,
+                    currentBackEvent,
+                    animationProgress.value,
+                )
+                val predictiveBackOffsetY = calculatePredictiveBackOffsetY(
+                    constraints,
+                    minOffsetMargin,
+                    currentBackEvent,
+                    firstBackEvent,
+                    height,
+                    SearchBarPredictiveBackMaxOffsetY.roundToPx(),
+                )
+                val placeable = measurable.measure(
+                    Constraints
+                        .fixed(width, height)
+                        .offset(
+                            vertical = -animatedTopPadding,
+                        ),
+                )
+                layout(width, height) {
+                    placeable.placeRelative(
+                        predictiveBackOffsetX,
+                        animatedTopPadding + predictiveBackOffsetY,
+                    )
+                }
+            },
+    ) {
+        Column {
+            val animatedInputFieldPadding = remember {
+                AnimatedPaddingValues2(animationProgress.asState(), topPadding)
+            }
+            SearchBarInputField(
+                state = state,
+                onSearch = onSearch,
+                onActiveChange = onActiveChange,
+                modifier = Modifier.padding(paddingValues = animatedInputFieldPadding),
+                enabled = enabled,
+                label = title.takeUnless { active || animationProgress.value > 0 || state.text.isNotEmpty() },
+                placeholder = placeholder,
+                leadingIcon = leadingIcon,
+                trailingIcon = trailingIcon,
+                colors = colors.inputFieldColors,
+                interactionSource = interactionSource,
+            )
+
+            val showResults by remember {
+                derivedStateOf(structuralEqualityPolicy()) { animationProgress.value > 0 }
+            }
+            if (showResults) {
+                Column(Modifier.graphicsLayer { alpha = animationProgress.value }) {
+                    HorizontalDivider(color = colors.dividerColor)
+                    content()
+                }
+            }
+        }
+    }
+
+    val isFocused = interactionSource.collectIsFocusedAsState().value
+    val shouldClearFocus = !active && isFocused
+    if (shouldClearFocus) {
+        LaunchedEffect(true) {
+            // Not strictly needed according to the motion spec, but since the animation already has
+            // a delay, this works around b/261632544.
+            delay(AnimationDelayMillis.toLong())
+            focusManager.clearFocus()
+        }
+    }
+
+    LaunchedEffect(active) {
+        val animationInProgress = animationProgress.value > 0 && animationProgress.value < 1
+        val animationSpec =
+            if (animationInProgress) {
+                AnimationPredictiveBackExitFloatSpec
+            } else if (active) {
+                AnimationEnterFloatSpec
+            } else {
+                AnimationExitFloatSpec
+            }
+        animationProgress.animateTo(
+            targetValue = if (active) 1f else 0f,
+            animationSpec = animationSpec,
+        )
+    }
+    val mutatorMutex = remember { MutatorMutex() }
+    if (active) {
+        PredictiveBackHandler(true) { progress ->
+            mutatorMutex.mutate {
+                var canceled = false
+                try {
+                    progress.collect { backEvent ->
+                        if (firstBackEvent == null) {
+                            firstBackEvent = backEvent
+                        }
+                        currentBackEvent = backEvent
+                        val interpolatedProgress = EaseOut.transform(backEvent.progress)
+                        animationProgress.snapTo(targetValue = 1 - interpolatedProgress)
+                    }
+                } catch (e: CancellationException) {
+                    canceled = true
+                } finally {
+                    firstBackEvent = null
+                    currentBackEvent = null
+                    onActiveChange(canceled)
+                }
+            }
+        }
+    }
+}
+
+private fun calculatePredictiveBackOffsetX(
+    constraints: Constraints,
+    minMargin: Int,
+    currentBackEvent: BackEventCompat?,
+    progress: Float,
+): Int {
+    if (currentBackEvent == null) {
+        return 0
+    }
+    val directionMultiplier = if (currentBackEvent.swipeEdge == BackEventCompat.EDGE_LEFT) 1 else -1
+    val maxOffsetX =
+        (constraints.maxWidth * SearchBarPredictiveBackMaxOffsetXRatio) - minMargin
+    return (maxOffsetX * (1 - progress)).toInt() * directionMultiplier
+}
+
+private fun calculatePredictiveBackOffsetY(
+    constraints: Constraints,
+    minMargin: Int,
+    currentBackEvent: BackEventCompat?,
+    firstBackEvent: BackEventCompat?,
+    height: Int,
+    maxOffsetY: Int,
+): Int {
+    if (firstBackEvent == null || currentBackEvent == null) {
+        return 0
+    }
+    val availableVerticalSpace = max(0, (constraints.maxHeight - height) / 2 - minMargin)
+    val adjustedMaxOffsetY = min(availableVerticalSpace, maxOffsetY)
+    val yDelta = currentBackEvent.touchY - firstBackEvent.touchY
+    val yProgress = abs(yDelta) / constraints.maxHeight
+    val directionMultiplier = sign(yDelta)
+    return (lerp(0, adjustedMaxOffsetY, yProgress) * directionMultiplier).roundToInt()
+}
+
+@Composable
+private fun SearchBarInputField(
+    state: TextFieldState,
+    onSearch: () -> Unit,
+    onActiveChange: (Boolean) -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    label: @Composable (() -> Unit)? = null,
+    placeholder: @Composable (() -> Unit)? = null,
+    leadingIcon: @Composable (() -> Unit)? = null,
+    trailingIcon: @Composable (() -> Unit)? = null,
+    colors: TextFieldColors = SearchBarDefaults.inputFieldColors(),
+    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
+) {
+    val focusRequester = remember { FocusRequester() }
+    val focused by interactionSource.collectIsFocusedAsState()
+    val textColor = LocalTextStyle.current.color.takeOrElse {
+        if (focused) colors.focusedTextColor else colors.unfocusedTextColor
+    }
+
+    BasicTextField2(
+        state = state,
+        modifier = modifier
+            .height(InputFieldHeight)
+            .fillMaxWidth()
+            .focusRequester(focusRequester)
+            .onFocusChanged { if (it.isFocused) onActiveChange(true) }
+            .semantics {
+                onClick {
+                    focusRequester.requestFocus()
+                    true
+                }
+            },
+        enabled = enabled,
+        lineLimits = TextFieldLineLimits.SingleLine,
+        textStyle = LocalTextStyle.current.merge(TextStyle(color = textColor)),
+        cursorBrush = SolidColor(colors.cursorColor),
+        keyboardOptions = KeyboardOptions(imeAction = ImeAction.Search),
+        keyboardActions = KeyboardActions(onSearch = { onSearch() }),
+        interactionSource = interactionSource,
+        decorator = @Composable { innerTextField ->
+            TextFieldDefaults.DecorationBox(
+                value = state.text.toString(),
+                innerTextField = innerTextField,
+                enabled = enabled,
+                singleLine = true,
+                visualTransformation = VisualTransformation.None,
+                interactionSource = interactionSource,
+                label = label,
+                placeholder = placeholder,
+                leadingIcon = leadingIcon?.let { leading ->
+                    {
+                        Box(Modifier.offset(x = SearchBarIconOffsetX)) { leading() }
+                    }
+                },
+                trailingIcon = trailingIcon?.let { trailing ->
+                    {
+                        Box(Modifier.offset(x = -SearchBarIconOffsetX)) { trailing() }
+                    }
+                },
+                shape = SearchBarDefaults.inputFieldShape,
+                colors = colors,
+                contentPadding = TextFieldDefaults.contentPaddingWithoutLabel(),
+                container = {},
+            )
+        },
+    )
+}
+
+@Stable
+private class AnimatedPaddingValues2(
+    val animationProgress: State<Float>,
+    val topPadding: State<Dp>,
+) : PaddingValues {
+    override fun calculateTopPadding(): Dp = topPadding.value * animationProgress.value
+    override fun calculateBottomPadding(): Dp = SearchBarVerticalPadding * animationProgress.value
+
+    override fun calculateLeftPadding(layoutDirection: LayoutDirection): Dp = 0.dp
+    override fun calculateRightPadding(layoutDirection: LayoutDirection): Dp = 0.dp
+}
+
+// Measurement specs
+private val SearchBarCornerRadius: Dp = InputFieldHeight / 2
+internal val SearchBarMinWidth: Dp = 360.dp
+private val SearchBarMaxWidth: Dp = 720.dp
+internal val SearchBarVerticalPadding: Dp = 8.dp
+internal val SearchBarHorizontalPadding: Dp = 16.dp
+
+// Search bar has 16dp padding between icons and start/end, while by default text field has 12dp.
+private val SearchBarIconOffsetX: Dp = 4.dp
+
+private const val SearchBarPredictiveBackMinScale: Float = 9f / 10f
+private val SearchBarPredictiveBackMinMargin: Dp = 8.dp
+private const val SearchBarPredictiveBackMaxOffsetXRatio: Float = 1f / 20f
+private val SearchBarPredictiveBackMaxOffsetY: Dp = 24.dp
+
+// Animation specs
+private const val AnimationEnterDurationMillis: Int = 600
+private const val AnimationExitDurationMillis: Int = 350
+private const val AnimationDelayMillis: Int = 100
+private val AnimationEnterEasing = CubicBezierEasing(0.05f, 0.7f, 0.1f, 1.0f)
+private val AnimationExitEasing = CubicBezierEasing(0.0f, 1.0f, 0.0f, 1.0f)
+private val AnimationEnterFloatSpec: FiniteAnimationSpec<Float> = tween(
+    durationMillis = AnimationEnterDurationMillis,
+    delayMillis = AnimationDelayMillis,
+    easing = AnimationEnterEasing,
+)
+private val AnimationExitFloatSpec: FiniteAnimationSpec<Float> = tween(
+    durationMillis = AnimationExitDurationMillis,
+    delayMillis = AnimationDelayMillis,
+    easing = AnimationExitEasing,
+)
+private val AnimationPredictiveBackExitFloatSpec: FiniteAnimationSpec<Float> = tween(
+    durationMillis = AnimationExitDurationMillis,
+    easing = AnimationExitEasing,
+)
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import androidx.compose.animation.AnimatedContentTransitionScope
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavGraph
+import androidx.navigation.NavGraphNavigator
+import androidx.navigation.Navigator
+import androidx.navigation.NavigatorProvider
+
+/**
+ * Custom subclass of [NavGraphNavigator] that adds support for defining
+ * transitions at the navigation graph level.
+ */
+@Navigator.Name("navigation")
+internal class ComposeNavGraphNavigator(
+    navigatorProvider: NavigatorProvider,
+) : NavGraphNavigator(navigatorProvider) {
+    override fun createDestination(): NavGraph {
+        return ComposeNavGraph(this)
+    }
+
+    internal class ComposeNavGraph(
+        navGraphNavigator: Navigator<out NavGraph>,
+    ) : NavGraph(navGraphNavigator) {
+        internal var enterTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+        )? = null
+
+        internal var exitTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+        )? = null
+
+        internal var popEnterTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+        )? = null
+
+        internal var popExitTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+        )? = null
+    }
+}
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import androidx.compose.animation.AnimatedContentScope
+import androidx.compose.animation.AnimatedContentTransitionScope
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavDestination
+import androidx.navigation.NavOptions
+import androidx.navigation.Navigator
+import androidx.navigation.compose.ComposeNavigator.Destination
+
+/**
+ * Navigator that navigates through [Composable]s. Every destination using this Navigator must
+ * set a valid [Composable] by setting it directly on an instantiated [Destination] or calling
+ * [composable].
+ */
+@Navigator.Name("composable")
+public class ComposeNavigator : Navigator<Destination>() {
+
+    /**
+     * Get the map of transitions currently in progress from the [state].
+     */
+    internal val transitionsInProgress get() = state.transitionsInProgress
+
+    /**
+     * Get the back stack from the [state].
+     */
+    public val backStack get() = state.backStack
+
+    internal val isPop = mutableStateOf(false)
+
+    override fun navigate(
+        entries: List<NavBackStackEntry>,
+        navOptions: NavOptions?,
+        navigatorExtras: Extras?,
+    ) {
+        entries.forEach { entry ->
+            state.pushWithTransition(entry)
+        }
+        isPop.value = false
+    }
+
+    override fun createDestination(): Destination {
+        return Destination(this) { }
+    }
+
+    override fun popBackStack(popUpTo: NavBackStackEntry, savedState: Boolean) {
+        state.popWithTransition(popUpTo, savedState)
+        isPop.value = true
+    }
+
+    /**
+     * Callback to mark a navigation in transition as complete.
+     *
+     * This should be called in conjunction with [navigate] and [popBackStack] as those
+     * calls merely start a transition to the target destination, and requires manually marking
+     * the transition as complete by calling this method.
+     *
+     * Failing to call this method could result in entries being prevented from reaching their
+     * final [Lifecycle.State].
+     */
+    public fun onTransitionComplete(entry: NavBackStackEntry) {
+        state.markTransitionComplete(entry)
+    }
+
+    /**
+     * NavDestination specific to [ComposeNavigator]
+     */
+    @NavDestination.ClassType(Composable::class)
+    public class Destination(
+        navigator: ComposeNavigator,
+        internal val content:
+        @Composable AnimatedContentScope.(@JvmSuppressWildcards NavBackStackEntry) -> Unit,
+    ) : NavDestination(navigator) {
+
+        @Deprecated(
+            message = "Deprecated in favor of Destination that supports AnimatedContent",
+            level = DeprecationLevel.HIDDEN,
+        )
+        constructor(
+            navigator: ComposeNavigator,
+            content: @Composable (NavBackStackEntry) -> @JvmSuppressWildcards Unit,
+        ) : this(navigator, content = { entry -> content(entry) })
+
+        internal var enterTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+        )? = null
+
+        internal var exitTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+        )? = null
+
+        internal var popEnterTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+        )? = null
+
+        internal var popExitTransition: (
+            @JvmSuppressWildcards
+            AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+        )? = null
+    }
+
+    internal companion object {
+        internal const val NAME = "composable"
+    }
+}
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveableStateHolder
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.window.Dialog
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.compose.DialogNavigator.Destination
+
+/**
+ * Show each [Destination] on the [DialogNavigator]'s back stack as a [Dialog].
+ *
+ * Note that [NavHost] will call this for you; you do not need to call it manually.
+ */
+@Composable
+public fun DialogHost(dialogNavigator: DialogNavigator) {
+    val saveableStateHolder = rememberSaveableStateHolder()
+    val dialogBackStack by dialogNavigator.backStack.collectAsState()
+    val visibleBackStack = rememberVisibleList(dialogBackStack)
+    visibleBackStack.PopulateVisibleList(dialogBackStack)
+
+    val transitionInProgress by dialogNavigator.transitionInProgress.collectAsState()
+    val dialogsToDispose = remember { mutableStateListOf<NavBackStackEntry>() }
+
+    visibleBackStack.forEach { backStackEntry ->
+        val destination = backStackEntry.destination as Destination
+        Dialog(
+            onDismissRequest = { dialogNavigator.dismiss(backStackEntry) },
+            properties = destination.dialogProperties,
+        ) {
+            DisposableEffect(backStackEntry) {
+                dialogsToDispose.add(backStackEntry)
+                onDispose {
+                    dialogNavigator.onTransitionComplete(backStackEntry)
+                    dialogsToDispose.remove(backStackEntry)
+                }
+            }
+
+            // while in the scope of the composable, we provide the navBackStackEntry as the
+            // ViewModelStoreOwner and LifecycleOwner
+            backStackEntry.LocalOwnersProvider(saveableStateHolder) {
+                destination.content(backStackEntry)
+            }
+        }
+    }
+    // Dialogs may have been popped before it was composed. To prevent leakage, we need to
+    // mark popped entries as complete here. Check that we don't accidentally complete popped
+    // entries that were composed, unless they were disposed of already.
+    LaunchedEffect(transitionInProgress, dialogsToDispose) {
+        transitionInProgress.forEach { entry ->
+            if (!dialogNavigator.backStack.value.contains(entry) &&
+                !dialogsToDispose.contains(entry)
+            ) {
+                dialogNavigator.onTransitionComplete(entry)
+            }
+        }
+    }
+}
+
+@Composable
+internal fun MutableList<NavBackStackEntry>.PopulateVisibleList(
+    backStack: Collection<NavBackStackEntry>,
+) {
+    val isInspecting = LocalInspectionMode.current
+    backStack.forEach { entry ->
+        DisposableEffect(entry.lifecycle) {
+            val observer = LifecycleEventObserver { _, event ->
+                // show dialog in preview
+                if (isInspecting && !contains(entry)) {
+                    add(entry)
+                }
+                // ON_START -> add to visibleBackStack, ON_STOP -> remove from visibleBackStack
+                if (event == Lifecycle.Event.ON_START) {
+                    // We want to treat the visible lists as Sets but we want to keep
+                    // the functionality of mutableStateListOf() so that we recompose in response
+                    // to adds and removes.
+                    if (!contains(entry)) {
+                        add(entry)
+                    }
+                }
+                if (event == Lifecycle.Event.ON_STOP) {
+                    remove(entry)
+                }
+            }
+            entry.lifecycle.addObserver(observer)
+            onDispose {
+                entry.lifecycle.removeObserver(observer)
+            }
+        }
+    }
+}
+
+@Composable
+internal fun rememberVisibleList(
+    backStack: Collection<NavBackStackEntry>,
+): SnapshotStateList<NavBackStackEntry> {
+    // show dialog in preview
+    val isInspecting = LocalInspectionMode.current
+    return remember(backStack) {
+        mutableStateListOf<NavBackStackEntry>().also {
+            it.addAll(
+                backStack.filter { entry ->
+                    if (isInspecting) {
+                        true
+                    } else {
+                        entry.lifecycle.currentState.isAtLeast(Lifecycle.State.STARTED)
+                    }
+                },
+            )
+        }
+    }
+}
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import androidx.navigation.FloatingWindow
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavDestination
+import androidx.navigation.NavOptions
+import androidx.navigation.Navigator
+import androidx.navigation.compose.DialogNavigator.Destination
+
+/**
+ * Navigator that navigates through [Composable]s that will be hosted within a
+ * [Dialog]. Every destination using this Navigator must  set a valid [Composable] by setting it
+ * directly on an instantiated [Destination] or calling [dialog].
+ */
+@Navigator.Name("dialog")
+public class DialogNavigator : Navigator<Destination>() {
+
+    /**
+     * Get the back stack from the [state].
+     */
+    internal val backStack get() = state.backStack
+
+    /**
+     * Get the transitioning dialogs from the [state].
+     */
+    internal val transitionInProgress get() = state.transitionsInProgress
+
+    /**
+     * Dismiss the dialog destination associated with the given [backStackEntry].
+     */
+    internal fun dismiss(backStackEntry: NavBackStackEntry) {
+        popBackStack(backStackEntry, false)
+    }
+
+    override fun navigate(
+        entries: List<NavBackStackEntry>,
+        navOptions: NavOptions?,
+        navigatorExtras: Extras?,
+    ) {
+        entries.forEach { entry ->
+            state.push(entry)
+        }
+    }
+
+    override fun createDestination(): Destination {
+        return Destination(this) { }
+    }
+
+    override fun popBackStack(popUpTo: NavBackStackEntry, savedState: Boolean) {
+        state.popWithTransition(popUpTo, savedState)
+        // When popping, the incoming dialog is marked transitioning to hold it in
+        // STARTED. With pop complete, we can remove it from transition so it can move to RESUMED.
+        val popIndex = state.transitionsInProgress.value.indexOf(popUpTo)
+        // do not mark complete for entries up to and including popUpTo
+        state.transitionsInProgress.value.forEachIndexed { index, entry ->
+            if (index > popIndex) onTransitionComplete(entry)
+        }
+    }
+
+    internal fun onTransitionComplete(entry: NavBackStackEntry) {
+        state.markTransitionComplete(entry)
+    }
+
+    /**
+     * NavDestination specific to [DialogNavigator]
+     */
+    @NavDestination.ClassType(Composable::class)
+    public class Destination(
+        navigator: DialogNavigator,
+        internal val dialogProperties: DialogProperties = DialogProperties(),
+        internal val content: @Composable (NavBackStackEntry) -> Unit,
+    ) : NavDestination(navigator), FloatingWindow
+
+    internal companion object {
+        internal const val NAME = "dialog"
+    }
+}
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@file:Suppress("ktlint:standard:property-naming", "ktlint:standard:function-naming")
+
+package androidx.navigation.compose
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.saveable.SaveableStateHolder
+import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.compose.ui.platform.LocalSavedStateRegistryOwner
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewmodel.compose.LocalViewModelStoreOwner
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavBackStackEntry
+import java.lang.ref.WeakReference
+import java.util.UUID
+
+/**
+ * Provides [this] [NavBackStackEntry] as [LocalViewModelStoreOwner], [LocalLifecycleOwner] and
+ * [LocalSavedStateRegistryOwner] to the [content] and saves the [content]'s saveable states with
+ * the given [saveableStateHolder].
+ *
+ * @param saveableStateHolder The [SaveableStateHolder] that holds the saved states. The same
+ * holder should be used for all [NavBackStackEntry]s in the encapsulating [Composable] and the
+ * holder should be hoisted.
+ * @param content The content [Composable]
+ */
+@Composable
+public fun NavBackStackEntry.LocalOwnersProvider(
+    saveableStateHolder: SaveableStateHolder,
+    content: @Composable () -> Unit,
+) {
+    CompositionLocalProvider(
+        LocalViewModelStoreOwner provides this,
+        LocalLifecycleOwner provides this,
+        LocalSavedStateRegistryOwner provides this,
+    ) {
+        saveableStateHolder.SaveableStateProvider(content)
+    }
+}
+
+@Composable
+private fun SaveableStateHolder.SaveableStateProvider(content: @Composable () -> Unit) {
+    val viewModel = viewModel<BackStackEntryIdViewModel>()
+    // Stash a reference to the SaveableStateHolder in the ViewModel so that
+    // it is available when the ViewModel is cleared, marking the permanent removal of this
+    // NavBackStackEntry from the back stack. Which, because of animations,
+    // only happens after this leaves composition. Which means we can't rely on
+    // DisposableEffect to clean up this reference (as it'll be cleaned up too early)
+    viewModel.saveableStateHolderRef = WeakReference(this)
+    SaveableStateProvider(viewModel.id, content)
+}
+
+internal class BackStackEntryIdViewModel(handle: SavedStateHandle) : ViewModel() {
+
+    private val IdKey = "SaveableStateHolder_BackStackEntryKey"
+
+    // we create our own id for each back stack entry to support multiple entries of the same
+    // destination. this id will be restored by SavedStateHandle
+    val id: UUID = handle.get<UUID>(IdKey) ?: UUID.randomUUID().also { handle.set(IdKey, it) }
+
+    lateinit var saveableStateHolderRef: WeakReference<SaveableStateHolder>
+
+    // onCleared will be called on the entries removed from the back stack. here we notify
+    // SaveableStateProvider that we should remove any state is had associated with this
+    // destination as it is no longer needed.
+    override fun onCleared() {
+        super.onCleared()
+        saveableStateHolderRef.get()?.removeState(id)
+        saveableStateHolderRef.clear()
+    }
+}
@@ -0,0 +1,243 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import androidx.compose.animation.AnimatedContentScope
+import androidx.compose.animation.AnimatedContentTransitionScope
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.window.DialogProperties
+import androidx.navigation.NamedNavArgument
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavDeepLink
+import androidx.navigation.NavGraph
+import androidx.navigation.NavGraphBuilder
+import androidx.navigation.get
+
+/**
+ * Add the [Composable] to the [NavGraphBuilder]
+ *
+ * @param route route for the destination
+ * @param arguments list of arguments to associate with destination
+ * @param deepLinks list of deep links to associate with the destinations
+ * @param content composable for the destination
+ */
+@Deprecated(
+    message = "Deprecated in favor of composable builder that supports AnimatedContent",
+    level = DeprecationLevel.HIDDEN,
+)
+public fun NavGraphBuilder.composable(
+    route: String,
+    arguments: List<NamedNavArgument> = emptyList(),
+    deepLinks: List<NavDeepLink> = emptyList(),
+    content: @Composable (NavBackStackEntry) -> Unit,
+) {
+    addDestination(
+        ComposeNavigator.Destination(provider[ComposeNavigator::class]) {
+                entry ->
+            content(entry)
+        }.apply {
+            this.route = route
+            arguments.forEach { (argumentName, argument) ->
+                addArgument(argumentName, argument)
+            }
+            deepLinks.forEach { deepLink ->
+                addDeepLink(deepLink)
+            }
+        },
+    )
+}
+
+/**
+ * Add the [Composable] to the [NavGraphBuilder]
+ *
+ * @param route route for the destination
+ * @param arguments list of arguments to associate with destination
+ * @param deepLinks list of deep links to associate with the destinations
+ * @param enterTransition callback to determine the destination's enter transition
+ * @param exitTransition callback to determine the destination's exit transition
+ * @param popEnterTransition callback to determine the destination's popEnter transition
+ * @param popExitTransition callback to determine the destination's popExit transition
+ * @param content composable for the destination
+ */
+public fun NavGraphBuilder.composable(
+    route: String,
+    arguments: List<NamedNavArgument> = emptyList(),
+    deepLinks: List<NavDeepLink> = emptyList(),
+    enterTransition: (
+        @JvmSuppressWildcards
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+    )? = null,
+    exitTransition: (
+        @JvmSuppressWildcards
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+    )? = null,
+    popEnterTransition: (
+        @JvmSuppressWildcards
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+    )? =
+        enterTransition,
+    popExitTransition: (
+        @JvmSuppressWildcards
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+    )? =
+        exitTransition,
+    content: @Composable AnimatedContentScope.(NavBackStackEntry) -> Unit,
+) {
+    addDestination(
+        ComposeNavigator.Destination(
+            provider[ComposeNavigator::class],
+            content,
+        ).apply {
+            this.route = route
+            arguments.forEach { (argumentName, argument) ->
+                addArgument(argumentName, argument)
+            }
+            deepLinks.forEach { deepLink ->
+                addDeepLink(deepLink)
+            }
+            this.enterTransition = enterTransition
+            this.exitTransition = exitTransition
+            this.popEnterTransition = popEnterTransition
+            this.popExitTransition = popExitTransition
+        },
+    )
+}
+
+/**
+ * Construct a nested [NavGraph]
+ *
+ * @sample androidx.navigation.compose.samples.NestedNavInGraphWithArgs
+ *
+ * @param startDestination the starting destination's route for this NavGraph
+ * @param route the destination's unique route
+ * @param arguments list of arguments to associate with destination
+ * @param deepLinks list of deep links to associate with the destinations
+ * @param builder the builder used to construct the graph
+ */
+@Deprecated(
+    message = "Deprecated in favor of navigation builder that supports AnimatedContent",
+    level = DeprecationLevel.HIDDEN,
+)
+public fun NavGraphBuilder.navigation(
+    startDestination: String,
+    route: String,
+    arguments: List<NamedNavArgument> = emptyList(),
+    deepLinks: List<NavDeepLink> = emptyList(),
+    builder: NavGraphBuilder.() -> Unit,
+) {
+    addDestination(
+        NavGraphBuilder(provider, startDestination, route).apply(builder).build().apply {
+            arguments.forEach { (argumentName, argument) ->
+                addArgument(argumentName, argument)
+            }
+            deepLinks.forEach { deepLink ->
+                addDeepLink(deepLink)
+            }
+        },
+    )
+}
+
+/**
+ * Construct a nested [NavGraph]
+ *
+ * @param startDestination the starting destination's route for this NavGraph
+ * @param route the destination's unique route
+ * @param arguments list of arguments to associate with destination
+ * @param deepLinks list of deep links to associate with the destinations
+ * @param enterTransition callback to define enter transitions for destination in this NavGraph
+ * @param exitTransition callback to define exit transitions for destination in this NavGraph
+ * @param popEnterTransition callback to define pop enter transitions for destination in this
+ * NavGraph
+ * @param popExitTransition callback to define pop exit transitions for destination in this NavGraph
+ * @param builder the builder used to construct the graph
+ *
+ * @return the newly constructed nested NavGraph
+ */
+public fun NavGraphBuilder.navigation(
+    startDestination: String,
+    route: String,
+    arguments: List<NamedNavArgument> = emptyList(),
+    deepLinks: List<NavDeepLink> = emptyList(),
+    enterTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?)? =
+        null,
+    exitTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?)? =
+        null,
+    popEnterTransition: (
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition?
+    )? = enterTransition,
+    popExitTransition: (
+        AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition?
+    )? = exitTransition,
+    builder: NavGraphBuilder.() -> Unit,
+) {
+    addDestination(
+        NavGraphBuilder(provider, startDestination, route).apply(builder).build().apply {
+            arguments.forEach { (argumentName, argument) ->
+                addArgument(argumentName, argument)
+            }
+            deepLinks.forEach { deepLink ->
+                addDeepLink(deepLink)
+            }
+            if (this is ComposeNavGraphNavigator.ComposeNavGraph) {
+                this.enterTransition = enterTransition
+                this.exitTransition = exitTransition
+                this.popEnterTransition = popEnterTransition
+                this.popExitTransition = popExitTransition
+            }
+        },
+    )
+}
+
+/**
+ * Add the [Composable] to the [NavGraphBuilder] that will be hosted within a
+ * [androidx.compose.ui.window.Dialog]. This is suitable only when this dialog represents
+ * a separate screen in your app that needs its own lifecycle and saved state, independent
+ * of any other destination in your navigation graph. For use cases such as `AlertDialog`,
+ * you should use those APIs directly in the [composable] destination that wants to show that
+ * dialog.
+ *
+ * @param route route for the destination
+ * @param arguments list of arguments to associate with destination
+ * @param deepLinks list of deep links to associate with the destinations
+ * @param dialogProperties properties that should be passed to [androidx.compose.ui.window.Dialog].
+ * @param content composable content for the destination that will be hosted within the Dialog
+ */
+public fun NavGraphBuilder.dialog(
+    route: String,
+    arguments: List<NamedNavArgument> = emptyList(),
+    deepLinks: List<NavDeepLink> = emptyList(),
+    dialogProperties: DialogProperties = DialogProperties(),
+    content: @Composable (NavBackStackEntry) -> Unit,
+) {
+    addDestination(
+        DialogNavigator.Destination(
+            provider[DialogNavigator::class],
+            dialogProperties,
+            content,
+        ).apply {
+            this.route = route
+            arguments.forEach { (argumentName, argument) ->
+                addArgument(argumentName, argument)
+            }
+            deepLinks.forEach { deepLink ->
+                addDeepLink(deepLink)
+            }
+        },
+    )
+}
@@ -0,0 +1,397 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.navigation.compose
+
+import android.annotation.SuppressLint
+import androidx.activity.compose.PredictiveBackHandler
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.animation.AnimatedContentTransitionScope
+import androidx.compose.animation.ContentTransform
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.compose.animation.core.EaseOut
+import androidx.compose.animation.core.ExperimentalTransitionApi
+import androidx.compose.animation.core.SeekableTransitionState
+import androidx.compose.animation.core.rememberTransition
+import androidx.compose.animation.core.snap
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.core.updateTransition
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.togetherWith
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveableStateHolder
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.lifecycle.viewmodel.compose.LocalViewModelStoreOwner
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavDestination
+import androidx.navigation.NavDestination.Companion.hierarchy
+import androidx.navigation.NavGraph
+import androidx.navigation.NavGraphBuilder
+import androidx.navigation.NavHostController
+import androidx.navigation.Navigator
+import androidx.navigation.createGraph
+import androidx.navigation.get
+import com.hippo.ehviewer.Settings
+import com.hippo.ehviewer.collectAsState
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.withContext
+
+/**
+ * Provides in place in the Compose hierarchy for self contained navigation to occur.
+ *
+ * Once this is called, any Composable within the given [NavGraphBuilder] can be navigated to from
+ * the provided [navController].
+ *
+ * The builder passed into this method is [remember]ed. This means that for this NavHost, the
+ * contents of the builder cannot be changed.
+ *
+ * @sample androidx.navigation.compose.samples.NavScaffold
+ *
+ * @param navController the navController for this host
+ * @param startDestination the route for the start destination
+ * @param modifier The modifier to be applied to the layout.
+ * @param route the route for the graph
+ * @param builder the builder used to construct the graph
+ */
+@Deprecated(
+    message = "Deprecated in favor of NavHost that supports AnimatedContent",
+    level = DeprecationLevel.HIDDEN,
+)
+@Composable
+public fun NavHost(
+    navController: NavHostController,
+    startDestination: String,
+    modifier: Modifier = Modifier,
+    route: String? = null,
+    builder: NavGraphBuilder.() -> Unit,
+) {
+    NavHost(
+        navController,
+        remember(route, startDestination, builder) {
+            navController.createGraph(startDestination, route, builder)
+        },
+        modifier,
+    )
+}
+
+/**
+ * Provides in place in the Compose hierarchy for self contained navigation to occur.
+ *
+ * Once this is called, any Composable within the given [NavGraphBuilder] can be navigated to from
+ * the provided [navController].
+ *
+ * The builder passed into this method is [remember]ed. This means that for this NavHost, the
+ * contents of the builder cannot be changed.
+ *
+ * @param navController the navController for this host
+ * @param startDestination the route for the start destination
+ * @param modifier The modifier to be applied to the layout.
+ * @param contentAlignment The [Alignment] of the [AnimatedContent]
+ * @param route the route for the graph
+ * @param enterTransition callback to define enter transitions for destination in this host
+ * @param exitTransition callback to define exit transitions for destination in this host
+ * @param popEnterTransition callback to define popEnter transitions for destination in this host
+ * @param popExitTransition callback to define popExit transitions for destination in this host
+ * @param builder the builder used to construct the graph
+ */
+@Composable
+public fun NavHost(
+    navController: NavHostController,
+    startDestination: String,
+    modifier: Modifier = Modifier,
+    contentAlignment: Alignment = Alignment.Center,
+    route: String? = null,
+    enterTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition) =
+        { fadeIn(animationSpec = tween(700)) },
+    exitTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition) =
+        { fadeOut(animationSpec = tween(700)) },
+    popEnterTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition) =
+        enterTransition,
+    popExitTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition) =
+        exitTransition,
+    builder: NavGraphBuilder.() -> Unit,
+) {
+    NavHost(
+        navController,
+        remember(route, startDestination, builder) {
+            navController.createGraph(startDestination, route, builder)
+        },
+        modifier,
+        contentAlignment,
+        enterTransition,
+        exitTransition,
+        popEnterTransition,
+        popExitTransition,
+    )
+}
+
+/**
+ * Provides in place in the Compose hierarchy for self contained navigation to occur.
+ *
+ * Once this is called, any Composable within the given [NavGraphBuilder] can be navigated to from
+ * the provided [navController].
+ *
+ * The graph passed into this method is [remember]ed. This means that for this NavHost, the graph
+ * cannot be changed.
+ *
+ * @param navController the navController for this host
+ * @param graph the graph for this host
+ * @param modifier The modifier to be applied to the layout.
+ */
+@Deprecated(
+    message = "Deprecated in favor of NavHost that supports AnimatedContent",
+    level = DeprecationLevel.HIDDEN,
+)
+@Composable
+public fun NavHost(
+    navController: NavHostController,
+    graph: NavGraph,
+    modifier: Modifier = Modifier,
+) = NavHost(navController, graph, modifier)
+
+/**
+ * Provides in place in the Compose hierarchy for self contained navigation to occur.
+ *
+ * Once this is called, any Composable within the given [NavGraphBuilder] can be navigated to from
+ * the provided [navController].
+ *
+ * @param navController the navController for this host
+ * @param graph the graph for this host
+ * @param modifier The modifier to be applied to the layout.
+ * @param contentAlignment The [Alignment] of the [AnimatedContent]
+ * @param enterTransition callback to define enter transitions for destination in this host
+ * @param exitTransition callback to define exit transitions for destination in this host
+ * @param popEnterTransition callback to define popEnter transitions for destination in this host
+ * @param popExitTransition callback to define popExit transitions for destination in this host
+ */
+@OptIn(ExperimentalTransitionApi::class)
+@SuppressLint("StateFlowValueCalledInComposition")
+@Composable
+public fun NavHost(
+    navController: NavHostController,
+    graph: NavGraph,
+    modifier: Modifier = Modifier,
+    contentAlignment: Alignment = Alignment.Center,
+    enterTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition) =
+        { fadeIn(animationSpec = tween(700)) },
+    exitTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition) =
+        { fadeOut(animationSpec = tween(700)) },
+    popEnterTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition) =
+        enterTransition,
+    popExitTransition: (AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition) =
+        exitTransition,
+) {
+    val lifecycleOwner = LocalLifecycleOwner.current
+    val viewModelStoreOwner = checkNotNull(LocalViewModelStoreOwner.current) {
+        "NavHost requires a ViewModelStoreOwner to be provided via LocalViewModelStoreOwner"
+    }
+
+    navController.setViewModelStore(viewModelStoreOwner.viewModelStore)
+
+    // Then set the graph
+    navController.graph = graph
+
+    // Find the ComposeNavigator, returning early if it isn't found
+    // (such as is the case when using TestNavHostController)
+    val composeNavigator = navController.navigatorProvider.get<Navigator<out NavDestination>>(
+        ComposeNavigator.NAME,
+    ) as? ComposeNavigator ?: return
+
+    val currentBackStack by composeNavigator.backStack.collectAsState()
+
+    DisposableEffect(lifecycleOwner) {
+        // Setup the navController with proper owners
+        navController.setLifecycleOwner(lifecycleOwner)
+        onDispose { }
+    }
+
+    val saveableStateHolder = rememberSaveableStateHolder()
+
+    val allVisibleEntries by navController.visibleEntries.collectAsState()
+
+    // Intercept back only when there's a destination to pop
+    val visibleEntries by remember {
+        derivedStateOf {
+            allVisibleEntries.filter { entry ->
+                entry.destination.navigatorName == ComposeNavigator.NAME
+            }
+        }
+    }
+
+    val backStackEntry: NavBackStackEntry? = visibleEntries.lastOrNull()
+
+    val zIndices = remember { mutableMapOf<String, Float>() }
+
+    if (backStackEntry != null) {
+        val enablePredictiveBack by Settings.predictiveNavAnim.collectAsState()
+        val transitionState = remember { SeekableTransitionState(backStackEntry) }
+        val transition = if (enablePredictiveBack) {
+            LaunchedEffect(backStackEntry) {
+                transitionState.animateTo(backStackEntry)
+            }
+            rememberTransition(transitionState, label = "entry")
+        } else {
+            updateTransition(backStackEntry, label = "entry")
+        }
+
+        var inPredictiveBack by remember { mutableStateOf(false) }
+        PredictiveBackHandler(currentBackStack.size > 1) { backEvent ->
+            inPredictiveBack = true
+            try {
+                val prev = requireNotNull(navController.previousBackStackEntry)
+                backEvent.collect {
+                    val interpolated = EaseOut.transform(it.progress)
+                    transitionState.snapTo(prev, interpolated)
+                }
+                inPredictiveBack = false
+                navController.popBackStack()
+            } catch (e: CancellationException) {
+                withContext(NonCancellable) {
+                    transitionState.animateTo(backStackEntry, snap())
+                    inPredictiveBack = false
+                }
+            }
+        }
+
+        val finalEnter: AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition = {
+            val targetDestination = targetState.destination as ComposeNavigator.Destination
+
+            if (composeNavigator.isPop.value || inPredictiveBack) {
+                targetDestination.hierarchy.firstNotNullOfOrNull { destination ->
+                    destination.createPopEnterTransition(this)
+                } ?: popEnterTransition.invoke(this)
+            } else {
+                targetDestination.hierarchy.firstNotNullOfOrNull { destination ->
+                    destination.createEnterTransition(this)
+                } ?: enterTransition.invoke(this)
+            }
+        }
+
+        val finalExit: AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition = {
+            val initialDestination = initialState.destination as ComposeNavigator.Destination
+
+            if (composeNavigator.isPop.value || inPredictiveBack) {
+                initialDestination.hierarchy.firstNotNullOfOrNull { destination ->
+                    destination.createPopExitTransition(this)
+                } ?: popExitTransition.invoke(this)
+            } else {
+                initialDestination.hierarchy.firstNotNullOfOrNull { destination ->
+                    destination.createExitTransition(this)
+                } ?: exitTransition.invoke(this)
+            }
+        }
+
+        DisposableEffect(true) {
+            onDispose {
+                visibleEntries.forEach { entry ->
+                    composeNavigator.onTransitionComplete(entry)
+                }
+            }
+        }
+
+        transition.AnimatedContent(
+            modifier,
+            transitionSpec = {
+                // If the initialState of the AnimatedContent is not in visibleEntries, we are in
+                // a case where visible has cleared the old state for some reason, so instead of
+                // attempting to animate away from the initialState, we skip the animation.
+                if (initialState in visibleEntries) {
+                    val initialZIndex = zIndices[initialState.id]
+                        ?: 0f.also { zIndices[initialState.id] = 0f }
+                    val targetZIndex = when {
+                        targetState.id == initialState.id -> initialZIndex
+                        composeNavigator.isPop.value -> initialZIndex - 1f
+                        else -> initialZIndex + 1f
+                    }.also { zIndices[targetState.id] = it }
+
+                    ContentTransform(finalEnter(this), finalExit(this), targetZIndex)
+                } else {
+                    EnterTransition.None togetherWith ExitTransition.None
+                }
+            },
+            contentAlignment,
+            contentKey = { it.id },
+        ) { currentEntry ->
+            // while in the scope of the composable, we provide the navBackStackEntry as the
+            // ViewModelStoreOwner and LifecycleOwner
+            currentEntry.LocalOwnersProvider(saveableStateHolder) {
+                (currentEntry.destination as ComposeNavigator.Destination)
+                    .content(this, currentEntry)
+            }
+        }
+        LaunchedEffect(transition.currentState, transition.targetState) {
+            if (transition.currentState == transition.targetState) {
+                visibleEntries.forEach { entry ->
+                    composeNavigator.onTransitionComplete(entry)
+                }
+                zIndices
+                    .filter { it.key != transition.targetState.id }
+                    .forEach { zIndices.remove(it.key) }
+            }
+        }
+    }
+
+    val dialogNavigator = navController.navigatorProvider.get<Navigator<out NavDestination>>(
+        DialogNavigator.NAME,
+    ) as? DialogNavigator ?: return
+
+    // Show any dialog destinations
+    DialogHost(dialogNavigator)
+}
+
+private fun NavDestination.createEnterTransition(
+    scope: AnimatedContentTransitionScope<NavBackStackEntry>,
+): EnterTransition? = when (this) {
+    is ComposeNavigator.Destination -> this.enterTransition?.invoke(scope)
+    is ComposeNavGraphNavigator.ComposeNavGraph -> this.enterTransition?.invoke(scope)
+    else -> null
+}
+
+private fun NavDestination.createExitTransition(
+    scope: AnimatedContentTransitionScope<NavBackStackEntry>,
+): ExitTransition? = when (this) {
+    is ComposeNavigator.Destination -> this.exitTransition?.invoke(scope)
+    is ComposeNavGraphNavigator.ComposeNavGraph -> this.exitTransition?.invoke(scope)
+    else -> null
+}
+
+private fun NavDestination.createPopEnterTransition(
+    scope: AnimatedContentTransitionScope<NavBackStackEntry>,
+): EnterTransition? = when (this) {
+    is ComposeNavigator.Destination -> this.popEnterTransition?.invoke(scope)
+    is ComposeNavGraphNavigator.ComposeNavGraph -> this.popEnterTransition?.invoke(scope)
+    else -> null
+}
+private fun NavDestination.createPopExitTransition(
+    scope: AnimatedContentTransitionScope<NavBackStackEntry>,
+): ExitTransition? = when (this) {
+    is ComposeNavigator.Destination -> this.popExitTransition?.invoke(scope)
+    is ComposeNavGraphNavigator.ComposeNavGraph -> this.popExitTransition?.invoke(scope)
+    else -> null
+}
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@file:Suppress("ktlint:standard:property-naming", "ktlint:standard:function-naming")
+
+package androidx.navigation.compose
+
+import android.content.Context
+import android.os.Bundle
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.saveable.Saver
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.platform.LocalContext
+import androidx.navigation.NavBackStackEntry
+import androidx.navigation.NavController
+import androidx.navigation.NavDestination
+import androidx.navigation.NavHostController
+import androidx.navigation.Navigator
+
+/**
+ * Gets the current navigation back stack entry as a [MutableState]. When the given navController
+ * changes the back stack due to a [NavController.navigate] or [NavController.popBackStack] this
+ * will trigger a recompose and return the top entry on the back stack.
+ *
+ * @return a mutable state of the current back stack entry
+ */
+@Composable
+public fun NavController.currentBackStackEntryAsState(): State<NavBackStackEntry?> {
+    return currentBackStackEntryFlow.collectAsState(null)
+}
+
+/**
+ * Creates a NavHostController that handles the adding of the [ComposeNavigator] and
+ * [DialogNavigator]. Additional [Navigator] instances can be passed through [navigators] to
+ * be applied to the returned NavController. Note that each [Navigator] must be separately
+ * remembered before being passed in here: any changes to those inputs will cause the
+ * NavController to be recreated.
+ *
+ * @see NavHost
+ */
+@Composable
+public fun rememberNavController(
+    vararg navigators: Navigator<out NavDestination>,
+): NavHostController {
+    val context = LocalContext.current
+    return rememberSaveable(inputs = navigators, saver = NavControllerSaver(context)) {
+        createNavController(context)
+    }.apply {
+        for (navigator in navigators) {
+            navigatorProvider.addNavigator(navigator)
+        }
+    }
+}
+
+private fun createNavController(context: Context) =
+    NavHostController(context).apply {
+        navigatorProvider.addNavigator(ComposeNavGraphNavigator(navigatorProvider))
+        navigatorProvider.addNavigator(ComposeNavigator())
+        navigatorProvider.addNavigator(DialogNavigator())
+    }
+
+/**
+ * Saver to save and restore the NavController across config change and process death.
+ */
+private fun NavControllerSaver(
+    context: Context,
+): Saver<NavHostController, *> = Saver<NavHostController, Bundle>(
+    save = { it.saveState() },
+    restore = { createNavController(context).apply { restoreState(it) } },
+)
@@ -1,38 +0,0 @@
-package androidx.navigation.ui
-
-import android.annotation.SuppressLint
-import android.view.MenuItem
-import androidx.annotation.IdRes
-import androidx.navigation.ActivityNavigator
-import androidx.navigation.NavController
-import androidx.navigation.NavDestination
-import androidx.navigation.NavDestination.Companion.hierarchy
-import androidx.navigation.NavOptions
-
-@SuppressLint("PrivateResource")
-fun onNavDestinationSelected2(item: MenuItem, navController: NavController): Boolean {
-    val builder = NavOptions.Builder().setLaunchSingleTop(true)
-    if (navController.currentDestination!!.parent!!.findNode(item.itemId) is ActivityNavigator.Destination) {
-        builder.setEnterAnim(R.anim.nav_default_enter_anim)
-            .setExitAnim(R.anim.nav_default_exit_anim)
-            .setPopEnterAnim(R.anim.nav_default_pop_enter_anim)
-            .setPopExitAnim(R.anim.nav_default_pop_exit_anim)
-    } else {
-        builder.setEnterAnim(androidx.fragment.R.animator.fragment_open_enter)
-            .setExitAnim(androidx.fragment.R.animator.fragment_open_exit)
-            .setPopEnterAnim(androidx.fragment.R.animator.fragment_close_enter)
-            .setPopExitAnim(androidx.fragment.R.animator.fragment_close_exit)
-    }
-    val options = builder.build()
-    return try {
-        // TODO provide proper API instead of using Exceptions as Control-Flow.
-        navController.navigate(item.itemId, null, options)
-        // Return true only if the destination we've navigated to matches the MenuItem
-        navController.currentDestination?.matchDestination(item.itemId) == true
-    } catch (e: IllegalArgumentException) {
-        false
-    }
-}
-
-fun NavDestination.matchDestination(@IdRes destId: Int): Boolean =
-    hierarchy.any { it.id == destId }
@@ -1,25 +0,0 @@
-package androidx.swiperefreshlayout.widget
-
-import android.annotation.SuppressLint
-import android.content.Context
-import android.graphics.drawable.ShapeDrawable
-import android.util.AttributeSet
-import androidx.core.graphics.ColorUtils
-import rikka.core.res.resolveColor
-
-@SuppressLint("PrivateResource")
-class ThemedSwipeRefreshLayout @JvmOverloads constructor(
-    context: Context,
-    attrs: AttributeSet? = null,
-) : SwipeRefreshLayout(context, attrs) {
-
-    init {
-        val surfaceColor =
-            context.theme.resolveColor(com.google.android.material.R.attr.colorSurface)
-        val overlayColor =
-            context.getColor(com.google.android.material.R.color.m3_popupmenu_overlay_color)
-        val backgroundColor = ColorUtils.compositeColors(overlayColor, surfaceColor)
-        (mCircleView.background as ShapeDrawable).paint.color = backgroundColor
-        setColorSchemeColors(context.theme.resolveColor(com.google.android.material.R.attr.colorAccent))
-    }
-}
@@ -1,111 +0,0 @@
-package com.davemorrissey.labs.subscaleview
-
-import android.graphics.Bitmap
-import android.graphics.Rect
-import com.davemorrissey.labs.subscaleview.provider.InputProvider
-
-/**
- * Helper class used to set the source and additional attributes from a variety of sources. Supports
- * use of a bitmap, asset, resource, external file or any other URI.
- *
- *
- * When you are using a preview image, you must set the dimensions of the full size image on the
- * ImageSource object for the full size image using the [.dimensions] method.
- */
-class ImageSource {
-    val bitmap: Bitmap?
-    val provider: InputProvider?
-
-    private var sWidth = 0
-    private var sHeight = 0
-
-    var sRegion = Rect(0, 0, 0, 0)
-        private set
-    var isCached = false
-        private set
-
-    private constructor(bitmap: Bitmap, cached: Boolean) {
-        this.bitmap = bitmap
-        provider = null
-        sWidth = bitmap.width
-        sHeight = bitmap.height
-        isCached = cached
-    }
-
-    private constructor(provider: InputProvider) {
-        bitmap = null
-        this.provider = provider
-    }
-
-    /**
-     * Use a region of the source image. Region must be set independently for the full size image and the preview if
-     * you are using one.
-     *
-     * @param sRegion the region of the source image to be displayed.
-     * @return this instance for chaining.
-     */
-    fun region(sRegion: Rect): ImageSource {
-        this.sRegion = sRegion
-        setInvariants()
-        return this
-    }
-
-    /**
-     * Declare the dimensions of the image. This is only required for a full size image, when you are specifying a URI
-     * and also a preview image. When displaying a bitmap object, or not using a preview, you do not need to declare
-     * the image dimensions. Note if the declared dimensions are found to be incorrect, the view will reset.
-     *
-     * @param sWidth  width of the source image.
-     * @param sHeight height of the source image.
-     * @return this instance for chaining.
-     */
-    fun dimensions(sWidth: Int, sHeight: Int): ImageSource {
-        if (bitmap == null) {
-            this.sWidth = sWidth
-            this.sHeight = sHeight
-        }
-        setInvariants()
-        return this
-    }
-
-    private fun setInvariants() {
-        if (!sRegion.isEmpty) {
-            sWidth = sRegion.width()
-            sHeight = sRegion.height()
-        }
-    }
-
-    companion object {
-        /**
-         * Create an instance from an input provider.
-         *
-         * @param provider input stream provider.
-         * @return an [ImageSource] instance.
-         */
-        fun provider(provider: InputProvider): ImageSource {
-            return ImageSource(provider)
-        }
-
-        /**
-         * Provide a loaded bitmap for display.
-         *
-         * @param bitmap bitmap to be displayed.
-         * @return an [ImageSource] instance.
-         */
-        fun bitmap(bitmap: Bitmap): ImageSource {
-            return ImageSource(bitmap, false)
-        }
-
-        /**
-         * Provide a loaded and cached bitmap for display. This bitmap will not be recycled when it is no
-         * longer needed. Use this method if you loaded the bitmap with an image loader such as Picasso
-         * or Volley.
-         *
-         * @param bitmap bitmap to be displayed.
-         * @return an [ImageSource] instance.
-         */
-        fun cachedBitmap(bitmap: Bitmap): ImageSource {
-            return ImageSource(bitmap, true)
-        }
-    }
-}
@@ -1,15 +0,0 @@
-package com.davemorrissey.labs.subscaleview
-
-import android.graphics.PointF
-import java.io.Serializable
-
-/**
- * Wraps the scale, center and orientation of a displayed image for easy restoration on screen rotate.
- */
-class ImageViewState(val scale: Float, center: PointF) : Serializable {
-    private val centerX: Float = center.x
-    private val centerY: Float = center.y
-
-    val center: PointF
-        get() = PointF(centerX, centerY)
-}
@@ -1,50 +0,0 @@
-package com.davemorrissey.labs.subscaleview.decoder
-
-import android.content.Context
-import android.graphics.Bitmap
-import android.graphics.Point
-import android.graphics.Rect
-import com.davemorrissey.labs.subscaleview.provider.InputProvider
-
-/**
- * Interface for image decoding classes.
- */
-interface Decoder {
-    /**
-     * Initialise the decoder. When possible, perform initial setup work once in this method. The
-     * dimensions of the image must be returned.
-     *
-     * @param context  Application context. A reference may be held, but must be cleared on recycle.
-     * @param provider Provider of the image.
-     * @return Dimensions of the image.
-     * @throws Exception if initialisation fails.
-     */
-    fun init(context: Context, provider: InputProvider): Point
-
-    /**
-     * Decode a region of the image with the given sample size. This method is called off the UI
-     * thread so it can safely load the image on the current thread. It is called from
-     * [android.os.AsyncTask]s running in an executor that may have multiple threads, so
-     * implementations must be thread safe. Adding `synchronized` to the method signature
-     * is the simplest way to achieve this, but bear in mind the [.recycle] method can be
-     * called concurrently.
-     *
-     * @param sRect      Source image rectangle to decode.
-     * @param sampleSize Sample size.
-     * @return The decoded region. It is safe to return null if decoding fails.
-     */
-    fun decodeRegion(sRect: Rect, sampleSize: Int): Bitmap
-
-    /**
-     * Status check. Should return false before initialisation and after recycle.
-     *
-     * @return true if the decoder is ready to be used.
-     */
-    val isReady: Boolean
-
-    /**
-     * This method will be called when the decoder is no longer required. It should clean up any
-     * resources still in use.
-     */
-    fun recycle()
-}
@@ -1,58 +0,0 @@
-package com.davemorrissey.labs.subscaleview.decoder
-
-import android.content.Context
-import android.graphics.Bitmap
-import android.graphics.Point
-import android.graphics.Rect
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.davemorrissey.labs.subscaleview.provider.InputProvider
-
-class ImageDecoder(private val cropBorders: Boolean, bitmapConfig: Bitmap.Config? = null) : Decoder {
-    init {
-        val globalBitmapConfig = SubsamplingScaleImageView.preferredBitmapConfig
-    }
-
-    /**
-     * Initialise the decoder. When possible, perform initial setup work once in this method. The
-     * dimensions of the image must be returned.
-     *
-     * @param context  Application context. A reference may be held, but must be cleared on recycle.
-     * @param provider Provider of the image.
-     * @return Dimensions of the image.
-     * @throws Exception if initialisation fails.
-     */
-    override fun init(context: Context, provider: InputProvider): Point {
-        TODO()
-    }
-
-    /**
-     * Decode a region of the image with the given sample size. This method is called off the UI
-     * thread so it can safely load the image on the current thread. It is called from
-     * [android.os.AsyncTask]s running in an executor that may have multiple threads, so
-     * implementations must be thread safe. Adding `synchronized` to the method signature
-     * is the simplest way to achieve this, but bear in mind the [.recycle] method can be
-     * called concurrently.
-     *
-     * @param sRect      Source image rectangle to decode.
-     * @param sampleSize Sample size.
-     * @return The decoded region. It is safe to return null if decoding fails.
-     */
-    override fun decodeRegion(sRect: Rect, sampleSize: Int): Bitmap {
-        TODO()
-    }
-
-    /**
-     * Status check. Should return false before initialisation and after recycle.
-     *
-     * @return true if the decoder is ready to be used.
-     */
-    override val isReady: Boolean = TODO()
-
-    /**
-     * This method will be called when the decoder is no longer required. It should clean up any
-     * resources still in use.
-     */
-    override fun recycle() {
-        TODO()
-    }
-}
@@ -1,3 +0,0 @@
-package com.davemorrissey.labs.subscaleview.provider
-
-interface InputProvider
@@ -0,0 +1,653 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.accompanist.web
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.os.Bundle
+import android.view.ViewGroup.LayoutParams
+import android.webkit.WebChromeClient
+import android.webkit.WebResourceError
+import android.webkit.WebResourceRequest
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import android.widget.FrameLayout
+import androidx.activity.compose.BackHandler
+import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshotFlow
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.viewinterop.AndroidView
+import com.google.accompanist.web.LoadingState.Finished
+import com.google.accompanist.web.LoadingState.Loading
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+/**
+ * A wrapper around the Android View WebView to provide a basic WebView composable.
+ *
+ * If you require more customisation you are most likely better rolling your own and using this
+ * wrapper as an example.
+ *
+ * The WebView attempts to set the layoutParams based on the Compose modifier passed in. If it
+ * is incorrectly sizing, use the layoutParams composable function instead.
+ *
+ * @param state The webview state holder where the Uri to load is defined.
+ * @param modifier A compose modifier
+ * @param captureBackPresses Set to true to have this Composable capture back presses and navigate
+ * the WebView back.
+ * @param navigator An optional navigator object that can be used to control the WebView's
+ * navigation from outside the composable.
+ * @param onCreated Called when the WebView is first created, this can be used to set additional
+ * settings on the WebView. WebChromeClient and WebViewClient should not be set here as they will be
+ * subsequently overwritten after this lambda is called.
+ * @param onDispose Called when the WebView is destroyed. Provides a bundle which can be saved
+ * if you need to save and restore state in this WebView.
+ * @param client Provides access to WebViewClient via subclassing
+ * @param chromeClient Provides access to WebChromeClient via subclassing
+ * @param factory An optional WebView factory for using a custom subclass of WebView
+ */
+@Composable
+fun WebView(
+    state: WebViewState,
+    modifier: Modifier = Modifier,
+    captureBackPresses: Boolean = true,
+    navigator: WebViewNavigator = rememberWebViewNavigator(),
+    onCreated: (WebView) -> Unit = {},
+    onDispose: (WebView) -> Unit = {},
+    client: AccompanistWebViewClient = remember { AccompanistWebViewClient() },
+    chromeClient: AccompanistWebChromeClient = remember { AccompanistWebChromeClient() },
+    factory: ((Context) -> WebView)? = null,
+) {
+    BoxWithConstraints(modifier) {
+        // WebView changes it's layout strategy based on
+        // it's layoutParams. We convert from Compose Modifier to
+        // layout params here.
+        val width =
+            if (constraints.hasFixedWidth) {
+                LayoutParams.MATCH_PARENT
+            } else {
+                LayoutParams.WRAP_CONTENT
+            }
+        val height =
+            if (constraints.hasFixedHeight) {
+                LayoutParams.MATCH_PARENT
+            } else {
+                LayoutParams.WRAP_CONTENT
+            }
+
+        val layoutParams = FrameLayout.LayoutParams(
+            width,
+            height,
+        )
+
+        WebView(
+            state,
+            layoutParams,
+            Modifier,
+            captureBackPresses,
+            navigator,
+            onCreated,
+            onDispose,
+            client,
+            chromeClient,
+            factory,
+        )
+    }
+}
+
+/**
+ * A wrapper around the Android View WebView to provide a basic WebView composable.
+ *
+ * If you require more customisation you are most likely better rolling your own and using this
+ * wrapper as an example.
+ *
+ * The WebView attempts to set the layoutParams based on the Compose modifier passed in. If it
+ * is incorrectly sizing, use the layoutParams composable function instead.
+ *
+ * @param state The webview state holder where the Uri to load is defined.
+ * @param layoutParams A FrameLayout.LayoutParams object to custom size the underlying WebView.
+ * @param modifier A compose modifier
+ * @param captureBackPresses Set to true to have this Composable capture back presses and navigate
+ * the WebView back.
+ * @param navigator An optional navigator object that can be used to control the WebView's
+ * navigation from outside the composable.
+ * @param onCreated Called when the WebView is first created, this can be used to set additional
+ * settings on the WebView. WebChromeClient and WebViewClient should not be set here as they will be
+ * subsequently overwritten after this lambda is called.
+ * @param onDispose Called when the WebView is destroyed. Provides a bundle which can be saved
+ * if you need to save and restore state in this WebView.
+ * @param client Provides access to WebViewClient via subclassing
+ * @param chromeClient Provides access to WebChromeClient via subclassing
+ * @param factory An optional WebView factory for using a custom subclass of WebView
+ */
+@Composable
+fun WebView(
+    state: WebViewState,
+    layoutParams: FrameLayout.LayoutParams,
+    modifier: Modifier = Modifier,
+    captureBackPresses: Boolean = true,
+    navigator: WebViewNavigator = rememberWebViewNavigator(),
+    onCreated: (WebView) -> Unit = {},
+    onDispose: (WebView) -> Unit = {},
+    client: AccompanistWebViewClient = remember { AccompanistWebViewClient() },
+    chromeClient: AccompanistWebChromeClient = remember { AccompanistWebChromeClient() },
+    factory: ((Context) -> WebView)? = null,
+) {
+    val webView = state.webView
+
+    BackHandler(captureBackPresses && navigator.canGoBack) {
+        webView?.goBack()
+    }
+
+    webView?.let { wv ->
+        LaunchedEffect(wv, navigator) {
+            with(navigator) {
+                wv.handleNavigationEvents()
+            }
+        }
+
+        LaunchedEffect(wv, state) {
+            snapshotFlow { state.content }.collect { content ->
+                when (content) {
+                    is WebContent.Url -> {
+                        wv.loadUrl(content.url, content.additionalHttpHeaders)
+                    }
+
+                    is WebContent.Data -> {
+                        wv.loadDataWithBaseURL(
+                            content.baseUrl,
+                            content.data,
+                            content.mimeType,
+                            content.encoding,
+                            content.historyUrl,
+                        )
+                    }
+
+                    is WebContent.Post -> {
+                        wv.postUrl(
+                            content.url,
+                            content.postData,
+                        )
+                    }
+
+                    is WebContent.NavigatorOnly -> {
+                        // NO-OP
+                    }
+                }
+            }
+        }
+    }
+
+    // Set the state of the client and chrome client
+    // This is done internally to ensure they always are the same instance as the
+    // parent Web composable
+    client.state = state
+    client.navigator = navigator
+    chromeClient.state = state
+
+    AndroidView(
+        factory = { context ->
+            (factory?.invoke(context) ?: WebView(context)).apply {
+                onCreated(this)
+
+                this.layoutParams = layoutParams
+
+                state.viewState?.let {
+                    this.restoreState(it)
+                }
+
+                webChromeClient = chromeClient
+                webViewClient = client
+            }.also { state.webView = it }
+        },
+        modifier = modifier,
+        onRelease = {
+            onDispose(it)
+        },
+    )
+}
+
+/**
+ * AccompanistWebViewClient
+ *
+ * A parent class implementation of WebViewClient that can be subclassed to add custom behaviour.
+ *
+ * As Accompanist Web needs to set its own web client to function, it provides this intermediary
+ * class that can be overriden if further custom behaviour is required.
+ */
+open class AccompanistWebViewClient : WebViewClient() {
+    open lateinit var state: WebViewState
+        internal set
+    open lateinit var navigator: WebViewNavigator
+        internal set
+
+    override fun onPageStarted(view: WebView, url: String?, favicon: Bitmap?) {
+        super.onPageStarted(view, url, favicon)
+        state.loadingState = Loading(0.0f)
+        state.errorsForCurrentRequest.clear()
+        state.pageTitle = null
+        state.pageIcon = null
+
+        state.lastLoadedUrl = url
+    }
+
+    override fun onPageFinished(view: WebView, url: String?) {
+        super.onPageFinished(view, url)
+        state.loadingState = Finished
+    }
+
+    override fun doUpdateVisitedHistory(view: WebView, url: String?, isReload: Boolean) {
+        super.doUpdateVisitedHistory(view, url, isReload)
+
+        navigator.canGoBack = view.canGoBack()
+        navigator.canGoForward = view.canGoForward()
+    }
+
+    override fun onReceivedError(
+        view: WebView,
+        request: WebResourceRequest?,
+        error: WebResourceError?,
+    ) {
+        super.onReceivedError(view, request, error)
+
+        if (error != null) {
+            state.errorsForCurrentRequest.add(WebViewError(request, error))
+        }
+    }
+}
+
+/**
+ * AccompanistWebChromeClient
+ *
+ * A parent class implementation of WebChromeClient that can be subclassed to add custom behaviour.
+ *
+ * As Accompanist Web needs to set its own web client to function, it provides this intermediary
+ * class that can be overriden if further custom behaviour is required.
+ */
+open class AccompanistWebChromeClient : WebChromeClient() {
+    open lateinit var state: WebViewState
+        internal set
+
+    override fun onReceivedTitle(view: WebView, title: String?) {
+        super.onReceivedTitle(view, title)
+        state.pageTitle = title
+    }
+
+    override fun onReceivedIcon(view: WebView, icon: Bitmap?) {
+        super.onReceivedIcon(view, icon)
+        state.pageIcon = icon
+    }
+
+    override fun onProgressChanged(view: WebView, newProgress: Int) {
+        super.onProgressChanged(view, newProgress)
+        if (state.loadingState is Finished) return
+        state.loadingState = Loading(newProgress / 100.0f)
+    }
+}
+
+sealed class WebContent {
+    data class Url(
+        val url: String,
+        val additionalHttpHeaders: Map<String, String> = emptyMap(),
+    ) : WebContent()
+
+    data class Data(
+        val data: String,
+        val baseUrl: String? = null,
+        val encoding: String = "utf-8",
+        val mimeType: String? = null,
+        val historyUrl: String? = null,
+    ) : WebContent()
+
+    data class Post(
+        val url: String,
+        val postData: ByteArray,
+    ) : WebContent() {
+        override fun equals(other: Any?): Boolean {
+            if (this === other) return true
+            if (javaClass != other?.javaClass) return false
+
+            other as Post
+
+            if (url != other.url) return false
+            if (!postData.contentEquals(other.postData)) return false
+
+            return true
+        }
+
+        override fun hashCode(): Int {
+            var result = url.hashCode()
+            result = 31 * result + postData.contentHashCode()
+            return result
+        }
+    }
+
+    data object NavigatorOnly : WebContent()
+}
+
+/**
+ * Sealed class for constraining possible loading states.
+ * See [Loading] and [Finished].
+ */
+sealed class LoadingState {
+    /**
+     * Describes a WebView that has not yet loaded for the first time.
+     */
+    data object Initializing : LoadingState()
+
+    /**
+     * Describes a webview between `onPageStarted` and `onPageFinished` events, contains a
+     * [progress] property which is updated by the webview.
+     */
+    data class Loading(val progress: Float) : LoadingState()
+
+    /**
+     * Describes a webview that has finished loading content.
+     */
+    data object Finished : LoadingState()
+}
+
+/**
+ * A state holder to hold the state for the WebView. In most cases this will be remembered
+ * using the rememberWebViewState(uri) function.
+ */
+@Stable
+class WebViewState(webContent: WebContent) {
+    var lastLoadedUrl: String? by mutableStateOf(null)
+        internal set
+
+    /**
+     *  The content being loaded by the WebView
+     */
+    var content: WebContent by mutableStateOf(webContent)
+
+    /**
+     * Whether the WebView is currently [LoadingState.Loading] data in its main frame (along with
+     * progress) or the data loading has [LoadingState.Finished]. See [LoadingState]
+     */
+    var loadingState: LoadingState by mutableStateOf(LoadingState.Initializing)
+        internal set
+
+    /**
+     * Whether the webview is currently loading data in its main frame
+     */
+    val isLoading: Boolean
+        get() = loadingState !is Finished
+
+    /**
+     * The title received from the loaded content of the current page
+     */
+    var pageTitle: String? by mutableStateOf(null)
+        internal set
+
+    /**
+     * the favicon received from the loaded content of the current page
+     */
+    var pageIcon: Bitmap? by mutableStateOf(null)
+        internal set
+
+    /**
+     * A list for errors captured in the last load. Reset when a new page is loaded.
+     * Errors could be from any resource (iframe, image, etc.), not just for the main page.
+     * For more fine grained control use the OnError callback of the WebView.
+     */
+    val errorsForCurrentRequest: SnapshotStateList<WebViewError> = mutableStateListOf()
+
+    /**
+     * The saved view state from when the view was destroyed last. To restore state,
+     * use the navigator and only call loadUrl if the bundle is null.
+     * See WebViewSaveStateSample.
+     */
+    var viewState: Bundle? = null
+        internal set
+
+    // We need access to this in the state saver. An internal DisposableEffect or AndroidView
+    // onDestroy is called after the state saver and so can't be used.
+    internal var webView by mutableStateOf<WebView?>(null)
+}
+
+/**
+ * Allows control over the navigation of a WebView from outside the composable. E.g. for performing
+ * a back navigation in response to the user clicking the "up" button in a TopAppBar.
+ *
+ * @see [rememberWebViewNavigator]
+ */
+@Stable
+class WebViewNavigator(private val coroutineScope: CoroutineScope) {
+    private sealed interface NavigationEvent {
+        data object Back : NavigationEvent
+        data object Forward : NavigationEvent
+        data object Reload : NavigationEvent
+        data object StopLoading : NavigationEvent
+
+        data class LoadUrl(
+            val url: String,
+            val additionalHttpHeaders: Map<String, String> = emptyMap(),
+        ) : NavigationEvent
+
+        data class LoadHtml(
+            val html: String,
+            val baseUrl: String? = null,
+            val mimeType: String? = null,
+            val encoding: String? = "utf-8",
+            val historyUrl: String? = null,
+        ) : NavigationEvent
+
+        data class PostUrl(
+            val url: String,
+            val postData: ByteArray,
+        ) : NavigationEvent {
+            override fun equals(other: Any?): Boolean {
+                if (this === other) return true
+                if (javaClass != other?.javaClass) return false
+
+                other as PostUrl
+
+                if (url != other.url) return false
+                if (!postData.contentEquals(other.postData)) return false
+
+                return true
+            }
+
+            override fun hashCode(): Int {
+                var result = url.hashCode()
+                result = 31 * result + postData.contentHashCode()
+                return result
+            }
+        }
+    }
+
+    private val navigationEvents: MutableSharedFlow<NavigationEvent> = MutableSharedFlow(replay = 1)
+
+    // Use Dispatchers.Main to ensure that the webview methods are called on UI thread
+    internal suspend fun WebView.handleNavigationEvents(): Nothing = withContext(Dispatchers.Main) {
+        navigationEvents.collect { event ->
+            when (event) {
+                is NavigationEvent.Back -> goBack()
+                is NavigationEvent.Forward -> goForward()
+                is NavigationEvent.Reload -> reload()
+                is NavigationEvent.StopLoading -> stopLoading()
+                is NavigationEvent.LoadHtml -> loadDataWithBaseURL(
+                    event.baseUrl,
+                    event.html,
+                    event.mimeType,
+                    event.encoding,
+                    event.historyUrl,
+                )
+
+                is NavigationEvent.LoadUrl -> {
+                    loadUrl(event.url, event.additionalHttpHeaders)
+                }
+
+                is NavigationEvent.PostUrl -> {
+                    postUrl(event.url, event.postData)
+                }
+            }
+        }
+    }
+
+    /**
+     * True when the web view is able to navigate backwards, false otherwise.
+     */
+    var canGoBack: Boolean by mutableStateOf(false)
+        internal set
+
+    /**
+     * True when the web view is able to navigate forwards, false otherwise.
+     */
+    var canGoForward: Boolean by mutableStateOf(false)
+        internal set
+
+    fun loadUrl(url: String, additionalHttpHeaders: Map<String, String> = emptyMap()) {
+        coroutineScope.launch {
+            navigationEvents.emit(
+                NavigationEvent.LoadUrl(
+                    url,
+                    additionalHttpHeaders,
+                ),
+            )
+        }
+    }
+
+    fun loadHtml(
+        html: String,
+        baseUrl: String? = null,
+        mimeType: String? = null,
+        encoding: String? = "utf-8",
+        historyUrl: String? = null,
+    ) {
+        coroutineScope.launch {
+            navigationEvents.emit(
+                NavigationEvent.LoadHtml(
+                    html,
+                    baseUrl,
+                    mimeType,
+                    encoding,
+                    historyUrl,
+                ),
+            )
+        }
+    }
+
+    fun postUrl(
+        url: String,
+        postData: ByteArray,
+    ) {
+        coroutineScope.launch {
+            navigationEvents.emit(
+                NavigationEvent.PostUrl(
+                    url,
+                    postData,
+                ),
+            )
+        }
+    }
+
+    /**
+     * Navigates the webview back to the previous page.
+     */
+    fun navigateBack() {
+        coroutineScope.launch { navigationEvents.emit(NavigationEvent.Back) }
+    }
+
+    /**
+     * Navigates the webview forward after going back from a page.
+     */
+    fun navigateForward() {
+        coroutineScope.launch { navigationEvents.emit(NavigationEvent.Forward) }
+    }
+
+    /**
+     * Reloads the current page in the webview.
+     */
+    fun reload() {
+        coroutineScope.launch { navigationEvents.emit(NavigationEvent.Reload) }
+    }
+
+    /**
+     * Stops the current page load (if one is loading).
+     */
+    fun stopLoading() {
+        coroutineScope.launch { navigationEvents.emit(NavigationEvent.StopLoading) }
+    }
+}
+
+/**
+ * Creates and remembers a [WebViewNavigator] using the default [CoroutineScope] or a provided
+ * override.
+ */
+@Composable
+fun rememberWebViewNavigator(
+    coroutineScope: CoroutineScope = rememberCoroutineScope(),
+): WebViewNavigator = remember(coroutineScope) { WebViewNavigator(coroutineScope) }
+
+/**
+ * A wrapper class to hold errors from the WebView.
+ */
+@Immutable
+data class WebViewError(
+    /**
+     * The request the error came from.
+     */
+    val request: WebResourceRequest?,
+    /**
+     * The error that was reported.
+     */
+    val error: WebResourceError,
+)
+
+/**
+ * Creates a WebView state that is remembered across Compositions.
+ *
+ * @param url The url to load in the WebView
+ * @param additionalHttpHeaders Optional, additional HTTP headers that are passed to [WebView.loadUrl].
+ *                              Note that these headers are used for all subsequent requests of the WebView.
+ */
+@Composable
+fun rememberWebViewState(
+    url: String,
+    additionalHttpHeaders: Map<String, String> = emptyMap(),
+): WebViewState =
+// Rather than using .apply {} here we will recreate the state, this prevents
+    // a recomposition loop when the webview updates the url itself.
+    remember {
+        WebViewState(
+            WebContent.Url(
+                url = url,
+                additionalHttpHeaders = additionalHttpHeaders,
+            ),
+        )
+    }.apply {
+        this.content = WebContent.Url(
+            url = url,
+            additionalHttpHeaders = additionalHttpHeaders,
+        )
+    }
@@ -18,28 +18,34 @@ package com.hippo.ehviewer

 import android.app.Application
 import android.content.ComponentCallbacks2
+import android.content.Context
+import android.os.StrictMode
+import android.util.Log
 import androidx.appcompat.app.AppCompatDelegate
+import androidx.appcompat.content.res.AppCompatResources
 import androidx.collection.LruCache
+import androidx.compose.runtime.snapshots.Snapshot
 import androidx.lifecycle.ProcessLifecycleOwner
 import androidx.lifecycle.coroutineScope
-import coil.ImageLoaderFactory
-import coil.decode.ImageDecoderDecoder
-import coil.util.DebugLogger
+import coil3.SingletonImageLoader
+import coil3.asCoilImage
+import coil3.gif.AnimatedImageDecoder
+import coil3.network.NetworkFetcher
+import coil3.request.crossfade
+import coil3.serviceLoaderEnabled
+import coil3.util.DebugLogger
 import com.hippo.ehviewer.client.EhCookieStore
 import com.hippo.ehviewer.client.EhTagDatabase
 import com.hippo.ehviewer.client.data.GalleryDetail
+import com.hippo.ehviewer.coil.DownloadThumbInterceptor
 import com.hippo.ehviewer.coil.MergeInterceptor
-import com.hippo.ehviewer.coil.installCronetHttpUriFetcher
 import com.hippo.ehviewer.dailycheck.checkDawn
 import com.hippo.ehviewer.dao.SearchDatabase
 import com.hippo.ehviewer.download.DownloadManager
-import com.hippo.ehviewer.ktbuilder.cache
-import com.hippo.ehviewer.ktbuilder.chunker
 import com.hippo.ehviewer.ktbuilder.diskCache
-import com.hippo.ehviewer.ktbuilder.httpClient
 import com.hippo.ehviewer.ktbuilder.imageLoader
+import com.hippo.ehviewer.ktor.CronetEngine
 import com.hippo.ehviewer.legacy.cleanObsoleteCache
-import com.hippo.ehviewer.legacy.migrateCookies
 import com.hippo.ehviewer.ui.keepNoMediaFileStatus
 import com.hippo.ehviewer.ui.lockObserver
 import com.hippo.ehviewer.util.AppConfig
@@ -47,13 +53,23 @@ import com.hippo.ehviewer.util.Crash
 import com.hippo.ehviewer.util.FavouriteStatusRouter
 import com.hippo.ehviewer.util.FileUtils
 import com.hippo.ehviewer.util.ReadableTime
+import com.hippo.ehviewer.util.delegateLazy
 import com.hippo.ehviewer.util.isAtLeastP
 import com.hippo.ehviewer.util.isAtLeastQ
-import com.hippo.ehviewer.util.isCronetSupported
-import eu.kanade.tachiyomi.network.interceptor.CloudflareInterceptor
+import com.hippo.ehviewer.util.isAtLeastS
+import com.hippo.ehviewer.util.isCronetAvailable
+import com.hippo.ehviewer.util.resettableLazy
+import eu.kanade.tachiyomi.network.interceptor.UncaughtExceptionInterceptor
 import eu.kanade.tachiyomi.util.lang.launchIO
+import eu.kanade.tachiyomi.util.lang.withUIContext
+import eu.kanade.tachiyomi.util.system.logcat
+import io.ktor.client.HttpClient
+import io.ktor.client.engine.okhttp.OkHttp
+import io.ktor.client.plugins.cookies.HttpCookies
+import java.io.File
+import kotlinx.coroutines.ensureActive
 import kotlinx.coroutines.launch
-import moe.tarsin.kt.unreachable
+import moe.tarsin.coroutines.runSuspendCatching
 import okhttp3.AsyncDns
 import okhttp3.android.AndroidAsyncDns
 import okio.Path.Companion.toOkioPath
@@ -63,11 +79,16 @@ import splitties.init.appCtx
 private val lifecycle = ProcessLifecycleOwner.get().lifecycle
 private val lifecycleScope = lifecycle.coroutineScope

-class EhApplication : Application(), ImageLoaderFactory {
+class EhApplication : Application(), SingletonImageLoader.Factory {
    override fun onCreate() {
        // Initialize Settings on first access
        lifecycleScope.launchIO {
-            AppCompatDelegate.setDefaultNightMode(Settings.theme)
+            val mode = Settings.theme
+            if (!isAtLeastS) {
+                withUIContext {
+                    AppCompatDelegate.setDefaultNightMode(mode)
+                }
+            }
        }
        lifecycle.addObserver(lockObserver)
        val handler = Thread.getDefaultUncaughtExceptionHandler()
@@ -81,17 +102,12 @@ class EhApplication : Application(), ImageLoaderFactory {
            handler?.uncaughtException(t, e)
        }
        super.onCreate()
-        if (isAtLeastP) {
-            System.loadLibrary("ehviewer")
-        }
+        System.loadLibrary("ehviewer")
        System.loadLibrary("ehviewer_rust")
        ReadableTime.initialize(this)
        lifecycleScope.launchIO {
            launchIO {
-                migrateCookies()
-            }
-            launchIO {
-                EhTagDatabase.update()
+                EhTagDatabase
            }
            launchIO {
                EhDB
@@ -99,6 +115,22 @@ class EhApplication : Application(), ImageLoaderFactory {
            launchIO {
                DownloadManager.isIdle
            }
+            launchIO {
+                runSuspendCatching {
+                    val files = mutableListOf<File>()
+                    AppConfig.externalCrashDir?.listFiles()?.let { files.addAll(it) }
+                    AppConfig.externalParseErrorDir?.listFiles()?.let { files.addAll(it) }
+                    files.sortByDescending { it.lastModified() }
+                    files.forEachIndexed { index, file ->
+                        ensureActive()
+                        if (index > 9) {
+                            file.delete()
+                        }
+                    }
+                }.onFailure {
+                    it.printStackTrace()
+                }
+            }
            launchIO {
                cleanupDownload()
            }
@@ -109,6 +141,12 @@ class EhApplication : Application(), ImageLoaderFactory {
            }
        }
        cleanObsoleteCache(this)
+        if (BuildConfig.DEBUG) {
+            StrictMode.enableDefaults()
+            Snapshot.registerApplyObserver { anies, _ ->
+                logcat(Log.VERBOSE) { anies.toString() }
+            }
+        }
    }

    private suspend fun cleanupDownload() {
@@ -138,55 +176,59 @@ class EhApplication : Application(), ImageLoaderFactory {
    override fun onTrimMemory(level: Int) {
        super.onTrimMemory(level)
        if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW) {
-            galleryDetailCache.evictAll()
+            // Keep one entry for GalleryCommentsScreen
+            galleryDetailCache.trimToSize(1)
        }
    }

-    override fun newImageLoader() = imageLoader {
+    override fun newImageLoader(context: Context) = context.imageLoader {
        components {
-            if (isCronetSupported) {
-                callFactory { unreachable() }
-                installCronetHttpUriFetcher()
-            } else {
-                callFactory(baseOkHttpClient)
-            }
-            if (isAtLeastP) {
-                add { result, options, _ -> ImageDecoderDecoder(result.source, options, false) }
-            }
+            serviceLoaderEnabled(false)
+            add(NetworkFetcher.Factory(delegateLazy { ktorClient }))
            add(MergeInterceptor)
+            add(DownloadThumbInterceptor)
+            if (isAtLeastP) {
+                add(AnimatedImageDecoder.Factory(false))
+            }
        }
        diskCache(imageCache)
        crossfade(300)
-        error(R.drawable.image_failed)
+        val drawable = AppCompatResources.getDrawable(appCtx, R.drawable.image_failed)
+        if (drawable != null) error(drawable.asCoilImage(true))
        if (BuildConfig.DEBUG) logger(DebugLogger())
-        respectCacheHeaders(false)
    }

    companion object {
-        val baseOkHttpClient by lazy {
-            httpClient {
-                cookieJar(EhCookieStore)
-                if (isAtLeastQ) {
-                    dns(AsyncDns.toDns(AndroidAsyncDns.IPv4, AndroidAsyncDns.IPv6))
+        var ktorClient by resettableLazy {
+            if (Settings.enableCronet && isCronetAvailable) {
+                HttpClient(CronetEngine) {
+                    install(HttpCookies) {
+                        storage = EhCookieStore
+                    }
+                }
+            } else {
+                HttpClient(OkHttp) {
+                    engine {
+                        config {
+                            if (isAtLeastQ) {
+                                dns(AsyncDns.toDns(AndroidAsyncDns.IPv4, AndroidAsyncDns.IPv6))
+                            }
+                            addInterceptor(UncaughtExceptionInterceptor())
+                        }
+                    }
+                    install(HttpCookies) {
+                        storage = EhCookieStore
+                    }
                }
-                chunker { alwaysReadResponseBody(false) }
-                addInterceptor(CloudflareInterceptor(appCtx))
            }
        }

-        val noRedirectOkHttpClient by lazy {
-            httpClient(baseOkHttpClient) {
-                followRedirects(false)
-            }
-        }
-
-        // Never use this okhttp client to download large blobs!!!
-        val okHttpClient by lazy {
-            httpClient(baseOkHttpClient) {
-                cache(
-                    appCtx.cacheDir.toOkioPath() / "http_cache",
-                    20L * 1024L * 1024L,
-                )
+        var noRedirectKtorClient by resettableLazy {
+            HttpClient(ktorClient.engine) {
+                followRedirects = false
+                install(HttpCookies) {
+                    storage = EhCookieStore
+                }
            }
        }

@@ -17,8 +17,6 @@ package com.hippo.ehviewer

 import android.content.Context
 import android.net.Uri
-import android.os.ParcelFileDescriptor
-import android.os.ParcelFileDescriptor.MODE_READ_ONLY
 import arrow.fx.coroutines.release
 import arrow.fx.coroutines.resource
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
@@ -32,6 +30,7 @@ import com.hippo.ehviewer.dao.LocalFavoriteInfo
 import com.hippo.ehviewer.dao.QuickSearch
 import com.hippo.ehviewer.download.DownloadManager
 import com.hippo.ehviewer.util.sendTo
+import com.hippo.unifile.asUniFile
 import kotlinx.coroutines.flow.Flow
 import splitties.arch.room.roomDb

@@ -130,7 +129,7 @@ object EhDB {
        deleteGalleryInfo(galleryInfo)
    }

-    suspend fun removeLocalFavorites(galleryInfoList: List<BaseGalleryInfo>) {
+    suspend fun removeLocalFavorites(galleryInfoList: Collection<BaseGalleryInfo>) {
        galleryInfoList.forEach {
            removeLocalFavorites(it)
        }
@@ -146,7 +145,7 @@ object EhDB {
        db.localFavoritesDao().upsert(LocalFavoriteInfo(galleryInfo.gid))
    }

-    suspend fun putLocalFavorites(galleryInfoList: List<BaseGalleryInfo>) {
+    suspend fun putLocalFavorites(galleryInfoList: Collection<BaseGalleryInfo>) {
        galleryInfoList.forEach {
            putLocalFavorites(it)
        }
@@ -195,7 +194,7 @@ object EhDB {
        db.historyDao().upsert(HistoryInfo(galleryInfo.gid))
    }

-    suspend fun modifyHistoryInfoFavslotNonRefresh(gid: Long, slot: Int) {
+    suspend fun updateFavoriteSlot(gid: Long, slot: Int) {
        val dao = db.galleryDao()
        dao.load(gid)?.let {
            it.favoriteSlot = slot
@@ -261,11 +260,7 @@ object EhDB {
            db.filterDao().list().let { newDb.filterDao().insert(it) }
            newDb.close()
            val dbFile = context.getDatabasePath(ehExportName)
-            context.contentResolver.openFileDescriptor(uri, "rw")!!.use { toFd ->
-                ParcelFileDescriptor.open(dbFile, MODE_READ_ONLY).use { fromFd ->
-                    fromFd sendTo toFd
-                }
-            }
+            dbFile.asUniFile() sendTo uri.asUniFile()
        }
    }

@@ -292,7 +287,7 @@ object EhDB {
            }
            runCatching {
                val downloadInfoList = oldDB.downloadsDao().joinList().asReversed()
-                DownloadManager.addDownload(downloadInfoList, false)
+                DownloadManager.addDownload(downloadInfoList)
            }
            runCatching {
                val historyInfoList = oldDB.historyDao().list()
@@ -2,8 +2,18 @@

 package com.hippo.ehviewer

+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisallowComposableCalls
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.remember
+import com.hippo.ehviewer.client.CHROME_USER_AGENT
 import com.hippo.ehviewer.client.EhUtils
 import com.hippo.ehviewer.client.data.FavListUrlBuilder
+import eu.kanade.tachiyomi.ui.reader.setting.OrientationType
+import eu.kanade.tachiyomi.ui.reader.setting.ReadingModeType
 import java.util.Locale
 import kotlin.reflect.KProperty
 import kotlinx.coroutines.flow.Flow
@@ -12,9 +22,78 @@ import kotlinx.coroutines.flow.asFlow
 import kotlinx.coroutines.flow.conflate
 import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.flow.flatMapMerge
+import kotlinx.coroutines.flow.map
+import splitties.preferences.BoolPref
 import splitties.preferences.DataStorePreferences
+import splitties.preferences.FloatPref
+import splitties.preferences.IntPref
+import splitties.preferences.LongPref
+import splitties.preferences.PrefDelegate
+import splitties.preferences.StringOrNullPref
+import splitties.preferences.StringPref
+import splitties.preferences.StringSetOrNullPref
+import splitties.preferences.StringSetPref
 import splitties.preferences.edit

+@Suppress("IMPLICIT_CAST_TO_ANY", "UNCHECKED_CAST")
+fun <T> PrefDelegate<T>.getValue(): T = when (this) {
+    is BoolPref -> value
+    is IntPref -> value
+    is FloatPref -> value
+    is LongPref -> value
+    is StringPref -> value
+    is StringOrNullPref -> value
+    is StringSetPref -> value
+    is StringSetOrNullPref -> value
+} as T
+
+@Suppress("UNCHECKED_CAST")
+fun <T> PrefDelegate<T>.setValue(newValue: T) = when (this) {
+    is BoolPref -> value = newValue as Boolean
+    is IntPref -> value = newValue as Int
+    is FloatPref -> value = newValue as Float
+    is LongPref -> value = newValue as Long
+    is StringPref -> value = newValue as String
+    is StringOrNullPref -> value = newValue as? String
+    is StringSetPref -> value = newValue as Set<String?>
+    is StringSetOrNullPref -> value = newValue as? Set<String?>
+}
+
+@Stable
+@Composable
+inline fun <R, T> PrefDelegate<T>.collectAsState(crossinline transform: @DisallowComposableCalls (T) -> R): State<R> {
+    val flow = remember { valueFlow().map { transform(it) } }
+    val init = getValue()
+    return flow.collectAsState(transform(init))
+}
+
+@Stable
+@Composable
+fun <T> PrefDelegate<T>.collectAsState(): State<T> {
+    val flow = remember { valueFlow() }
+    val init = getValue()
+    return flow.collectAsState(init)
+}
+
+@Stable
+@Composable
+fun <T> PrefDelegate<T>.asMutableState(): MutableState<T> {
+    val flow = remember { valueFlow() }
+    val init = getValue()
+    val readOnly = flow.collectAsState(init)
+    return remember {
+        object : MutableState<T> {
+            override var value: T
+                get() = readOnly.value
+                set(value) {
+                    setValue(value)
+                }
+            override fun component1() = TODO()
+            override fun component2() = TODO()
+        }
+    }
+}
+
 object Settings : DataStorePreferences(null) {
    private const val KEY_SHOW_TAG_TRANSLATIONS = "show_tag_translations"

@@ -24,6 +103,15 @@ object Settings : DataStorePreferences(null) {
    var favCount by intArrayPref("fav_count", 10).emitTo(_favFlow)
    var favCloudCount by intPref("fav_cloud", 0).emitTo(_favFlow)

+    val listMode = intPref("list_mode_2", 0)
+    val detailSize = intPref("detail_size_2", 0)
+    val thumbColumns = intPref("thumb_columns", 3)
+    val listThumbSize = intPref("list_tile_size", 40)
+    val languageFilter = intPref("language_filter", -1)
+    val meteredNetworkWarning = boolPref("cellular_network_warning", false)
+    val predictiveNavAnim = boolPref("predictive_nav_anim_2", false)
+    val blackDarkTheme = boolPref("black_dark_theme", false)
+
    var downloadScheme by stringOrNullPref("image_scheme", null)
    var downloadAuthority by stringOrNullPref("image_authority", null)
    var downloadPath by stringOrNullPref("image_path", null)
@@ -36,11 +124,10 @@ object Settings : DataStorePreferences(null) {
    var preloadImage by intPref("preload_image_2", 5)
    var downloadTimeout by intPref("download_timeout", 60)
    var theme by intPref("theme_2", -1).observed { updateWhenThemeChanges() }
-    var listMode by intPref("list_mode_2", 0)
-    var detailSize by intPref("detail_size_2", 0)
    var thumbResolution by intPref("thumb_resolution_2", 0)
    var readCacheSize by intPref("read_cache_size_2", 640)
    var launchPage by intPref("launch_page_2", 0)
+    var commentThreshold by intPref("comment_threshold", -101)
    var forceEhThumb by boolPref("force_eh_thumb", false)
    var showComments by boolPref("show_gallery_comments", true)
    var requestNews by boolPref("request_news", false).observed { updateWhenRequestNewsChanges() }
@@ -48,7 +135,6 @@ object Settings : DataStorePreferences(null) {
    var showJpnTitle by boolPref("show_jpn_title", false)
    var showGalleryPages by boolPref("show_gallery_pages", true)
    var showTagTranslations by boolPref(KEY_SHOW_TAG_TRANSLATIONS, false).observed { updateWhenTagTranslationChanges() }
-    var meteredNetworkWarning by boolPref("cellular_network_warning", false)
    var appLinkVerifyTip by boolPref("app_link_verify_tip", false)
    var enabledSecurity by boolPref("enable_secure", false)
    var useCIUpdateChannel by boolPref("ci_update_channel", false)
@@ -60,28 +146,41 @@ object Settings : DataStorePreferences(null) {
    var security by boolPref("require_unlock", false)
    var removeImageFiles by boolPref("include_pic", true)
    var needSignIn by boolPref("need_sign_in", true)
-    var blackDarkTheme by boolPref("black_dark_theme", false).observed { updateWhenAmoledModeChanges() }
    var harmonizeCategoryColor by boolPref("harmonize_category_color", true)
    var preloadThumbAggressively by boolPref("preload_thumb_aggressively", false)
    var downloadOriginImage by boolPref("download_origin_image", false)
-    var enableCronet by boolPref("enable_cronet", true)
-    var thumbSizeDp by intPref("thumb_size_", 120)
+    var enableCronet by boolPref("enable_cronet", true).observed { updateWhenEnableCronetChanges() }
    var recentFavCat by intPref("recent_fav_cat", FavListUrlBuilder.FAV_CAT_LOCAL)
    var defaultFavSlot by intPref("default_favorite_slot", -2)
    var securityDelay by intPref("require_unlock_delay", 0)
    var clipboardTextHashCode by intPref("clipboard_text_hash_code", 0)
-    var listThumbSize by intPref("list_tile_size", 40)
    var searchCategory by intPref("search_pref", EhUtils.ALL_CATEGORY)
-    var requestNewsTimerHour by intPref("request_news_timer_hour", -1)
-    var requestNewsTimerMinute by intPref("request_news_timer_minute", -1)
-    var updateIntervalDays by intPref("update_interval_days", 0)
+    var requestNewsTime by intPref("request_news_time", 0).observed { updateWhenRequestNewsChanges() }
+    var updateIntervalDays by intPref("update_interval_days", 7)
+    var lastDawnDays by intPref("last_dawn_days", 0)
+    var recentToplist by stringPref("recent_toplist", "11")
+    var userAgent by stringPref("user_agent", CHROME_USER_AGENT)
    var recentDownloadLabel by stringOrNullPref("recent_download_label", null)
    var defaultDownloadLabel by stringOrNullPref("default_download_label", null)
    var displayName by stringOrNullPref("display_name", null)
    var avatar by stringOrNullPref("avatar", null)
    var language by stringPref("app_language", "system").observed { updateWhenLocaleChanges() }
-    var lastDawnDay by longPref("last_dawn_day", 0)
-    var lastUpdateDay by longPref("last_update_day", 0)
+    var lastUpdateTime by longPref("last_update_time", 0)
+    var favDialogTheta by floatPref("fav_select_dialog_delta", 0F)
+
+    // TODO: Remove this after swipe gestures are correctly handled in compose
+    var touchSlopFactor by intPref("touch_slop", 3)
+
+    // Tachiyomi Reader
+    val cropBorder = boolPref("crop_borders", false)
+    val colorFilter = boolPref("pref_color_filter_key", false)
+    val colorFilterValue = intPref("color_filter_value", 0)
+    val colorFilterMode = intPref("color_filter_mode", 0)
+    val customBrightness = boolPref("pref_custom_brightness_key", false)
+    val customBrightnessValue = intPref("custom_brightness_value", 0)
+    val readingMode = intPref("pref_default_reading_mode_key", ReadingModeType.LEFT_TO_RIGHT.flagValue)
+    val orientationMode = intPref("pref_default_orientation_type_key", OrientationType.FREE.flagValue)
+    val showReaderSeekbar = boolPref("pref_show_reader_seekbar", true)

    init {
        if ("CN" == Locale.getDefault().country) {
@@ -1,13 +1,16 @@
 package com.hippo.ehviewer

+import android.app.UiModeManager
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
 import androidx.core.os.LocaleListCompat
+import com.hippo.ehviewer.EhApplication.Companion.ktorClient
+import com.hippo.ehviewer.EhApplication.Companion.noRedirectKtorClient
 import com.hippo.ehviewer.client.EhCookieStore
 import com.hippo.ehviewer.client.EhEngine
 import com.hippo.ehviewer.client.EhTagDatabase
 import com.hippo.ehviewer.dailycheck.updateDailyCheckWork
 import com.hippo.ehviewer.ui.keepNoMediaFileStatus
+import com.hippo.ehviewer.util.isAtLeastS
 import eu.kanade.tachiyomi.util.lang.launchIO
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -17,6 +20,7 @@ import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 import splitties.init.appCtx
 import splitties.preferences.PrefDelegate
+import splitties.systemservices.uiModeManager

 private val collectScope = CoroutineScope(Dispatchers.Main + SupervisorJob())
 fun <T, R : PrefDelegate<T>> R.observed(func: (Unit) -> Unit) = apply { collectScope.launch { changesFlow().collect(func) } }
@@ -41,17 +45,24 @@ fun updateWhenKeepMediaStatusChanges() {
    }
 }

-fun updateWhenThemeChanges() {
-    collectScope.launch {
-        delay(100) // Avoid recompose being cancelled
-        AppCompatDelegate.setDefaultNightMode(Settings.theme)
+fun updateWhenEnableCronetChanges() {
+    collectScope.launchIO {
+        ktorClient = ktorClient.apply { close() }
+        noRedirectKtorClient = noRedirectKtorClient.apply { close() }
    }
 }

-fun updateWhenAmoledModeChanges() {
+fun updateWhenThemeChanges() {
    collectScope.launch {
        delay(100) // Avoid recompose being cancelled
-        AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_AUTO_BATTERY)
+        if (isAtLeastS) {
+            val mode = when (Settings.theme) {
+                AppCompatDelegate.MODE_NIGHT_NO -> UiModeManager.MODE_NIGHT_NO
+                AppCompatDelegate.MODE_NIGHT_YES -> UiModeManager.MODE_NIGHT_YES
+                else -> UiModeManager.MODE_NIGHT_AUTO
+            }
+            uiModeManager.setApplicationNightMode(mode)
+        }
        AppCompatDelegate.setDefaultNightMode(Settings.theme)
    }
 }
@@ -1,50 +1,22 @@
-/*
- * Copyright 2016 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 package com.hippo.ehviewer.client

 import android.webkit.CookieManager
 import androidx.compose.ui.util.fastAny
-import androidx.compose.ui.util.fastFilter
 import androidx.compose.ui.util.fastForEach
 import androidx.compose.ui.util.fastJoinToString
-import androidx.compose.ui.util.fastMapNotNull
-import okhttp3.Cookie
-import okhttp3.CookieJar
-import okhttp3.HttpUrl
-import okhttp3.HttpUrl.Companion.toHttpUrl
+import io.ktor.client.plugins.cookies.CookiesStorage
+import io.ktor.http.Cookie
+import io.ktor.http.Url
+import io.ktor.http.parseClientCookiesHeader
+import io.ktor.http.renderSetCookieHeader

-object EhCookieStore : CookieJar {
+object EhCookieStore : CookiesStorage {
    private val manager = CookieManager.getInstance()
    fun signOut() = manager.removeAllCookies(null)
-    fun contains(url: HttpUrl, name: String) = get(url).fastAny { it.name == name }
-
-    fun get(url: HttpUrl): List<Cookie> {
-        val cookies = manager.getCookie(url.toString())
-
-        return if (!cookies.isNullOrEmpty()) {
-            cookies.split(";").fastMapNotNull { setCookie ->
-                Cookie.parse(url, setCookie)?.takeUnless { it.name == KEY_UTMP_NAME }
-            }
-        } else {
-            emptyList()
-        }
-    }
+    fun contains(url: String, name: String) = load(Url(url)).fastAny { it.name == name }

    fun hasSignedIn(): Boolean {
-        val url = EhUrl.HOST_E.toHttpUrl()
+        val url = EhUrl.HOST_E
        return contains(url, KEY_IPB_MEMBER_ID) && contains(url, KEY_IPB_PASS_HASH)
    }

@@ -55,54 +27,57 @@ object EhCookieStore : CookieJar {
    private const val KEY_CONTENT_WARNING = "nw"
    private const val CONTENT_WARNING_NOT_SHOW = "1"
    private const val KEY_UTMP_NAME = "__utmp"
-    private val sTipsCookie = Cookie.Builder().apply {
-        name(KEY_CONTENT_WARNING)
-        value(CONTENT_WARNING_NOT_SHOW)
-        domain(EhUrl.DOMAIN_E)
-        path("/")
-        expiresAt(Long.MAX_VALUE)
-    }.build()
+    private val sTipsCookie = Cookie(
+        name = KEY_CONTENT_WARNING,
+        value = CONTENT_WARNING_NOT_SHOW,
+    )

    fun copyNecessaryCookies() {
-        val cookies = get(EhUrl.HOST_E.toHttpUrl())
+        val cookies = load(Url(EhUrl.HOST_E))
        cookies.fastForEach {
            if (it.name == KEY_STAR || it.name == KEY_IPB_MEMBER_ID || it.name == KEY_IPB_PASS_HASH) {
-                manager.setCookie(EhUrl.HOST_EX, it.toString())
+                manager.setCookie(EhUrl.HOST_EX, it.copy(maxAge = Int.MAX_VALUE).toString())
            }
        }
    }

-    fun deleteCookie(url: HttpUrl, name: String) {
-        manager.setCookie(url.toString(), "$name=;Max-Age=0")
-    }
-
-    fun addCookie(cookie: Cookie) {
-        manager.setCookie(if (EhUrl.DOMAIN_E == cookie.domain) EhUrl.HOST_E else EhUrl.HOST_EX, cookie.toString())
+    fun addCookie(k: String, v: String, domain: String) {
+        val cookie = Cookie(name = k, value = v, domain = domain, maxAge = Int.MAX_VALUE)
+        val url = if (EhUrl.DOMAIN_E == cookie.domain) EhUrl.HOST_E else EhUrl.HOST_EX
+        manager.setCookie(url, renderSetCookieHeader(cookie))
    }

    fun flush() = manager.flush()

-    fun getCookieHeader(url: HttpUrl): String {
-        return loadForRequest(url).fastJoinToString("; ") {
+    fun getCookieHeader(url: String): String {
+        return load(Url(url)).fastJoinToString("; ") {
            "${it.name}=${it.value}"
        }
    }

    // See https://github.com/Ehviewer-Overhauled/Ehviewer/issues/873
-    override fun saveFromResponse(url: HttpUrl, cookies: List<Cookie>) = cookies.fastForEach {
-        if (it.name != KEY_UTMP_NAME) {
-            manager.setCookie(url.toString(), it.toString())
+    override suspend fun addCookie(requestUrl: Url, cookie: Cookie) {
+        if (cookie.name != KEY_UTMP_NAME) {
+            manager.setCookie(requestUrl.toString(), renderSetCookieHeader(cookie))
        }
    }

-    override fun loadForRequest(url: HttpUrl): List<Cookie> {
+    override fun close() = Unit
+
+    fun load(url: Url): List<Cookie> {
+        val cookies = manager.getCookie(url.toString())
        val checkTips = EhUrl.DOMAIN_E in url.host
-        return get(url).run {
-            if (checkTips) {
-                fastFilter { it.name != KEY_CONTENT_WARNING }.toMutableList().apply { add(sTipsCookie) }
-            } else {
-                this
-            }
-        }
+        return cookies?.let {
+            parseClientCookiesHeader(cookies)
+                .map { Cookie(it.key, it.value) }
+                .filterTo(mutableListOf()) { it.name != KEY_UTMP_NAME }.apply {
+                    if (checkTips) {
+                        removeAll { it.name == KEY_CONTENT_WARNING }
+                        add(sTipsCookie)
+                    }
+                }
+        } ?: if (checkTips) listOf(sTipsCookie) else emptyList()
    }
+
+    override suspend fun get(requestUrl: Url) = load(requestUrl)
 }
@@ -15,12 +15,15 @@
 */
 package com.hippo.ehviewer.client

-import android.util.Log
+import arrow.core.Either
+import arrow.core.left
+import arrow.core.right
 import arrow.fx.coroutines.parMap
 import arrow.fx.coroutines.parZip
 import com.hippo.ehviewer.R
 import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
+import com.hippo.ehviewer.client.data.FavListUrlBuilder
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.client.exception.EhException
 import com.hippo.ehviewer.client.exception.InsufficientFundsException
@@ -28,13 +31,14 @@ import com.hippo.ehviewer.client.exception.NotLoggedInException
 import com.hippo.ehviewer.client.exception.ParseException
 import com.hippo.ehviewer.client.parser.ArchiveParser
 import com.hippo.ehviewer.client.parser.EventPaneParser
+import com.hippo.ehviewer.client.parser.FavParserResult
 import com.hippo.ehviewer.client.parser.FavoritesParser
 import com.hippo.ehviewer.client.parser.ForumsParser
 import com.hippo.ehviewer.client.parser.GalleryApiParser
 import com.hippo.ehviewer.client.parser.GalleryDetailParser
 import com.hippo.ehviewer.client.parser.GalleryListParser
+import com.hippo.ehviewer.client.parser.GalleryListResult
 import com.hippo.ehviewer.client.parser.GalleryNotAvailableParser
-import com.hippo.ehviewer.client.parser.GalleryPageApiParser
 import com.hippo.ehviewer.client.parser.GalleryPageParser
 import com.hippo.ehviewer.client.parser.GalleryTokenApiParser
 import com.hippo.ehviewer.client.parser.HomeParser
@@ -45,45 +49,64 @@ import com.hippo.ehviewer.client.parser.TorrentParser
 import com.hippo.ehviewer.client.parser.TorrentResult
 import com.hippo.ehviewer.client.parser.VoteCommentResult
 import com.hippo.ehviewer.client.parser.VoteTagParser
-import com.hippo.ehviewer.cronet.awaitBodyFully
-import com.hippo.ehviewer.cronet.cronetRequest
-import com.hippo.ehviewer.cronet.execute
 import com.hippo.ehviewer.dailycheck.showEventNotification
 import com.hippo.ehviewer.dailycheck.today
 import com.hippo.ehviewer.util.AppConfig
+import com.hippo.ehviewer.util.ReadableTime
 import com.hippo.ehviewer.util.StatusCodeException
-import com.hippo.ehviewer.util.isCronetSupported
+import io.ktor.client.request.forms.append
+import io.ktor.client.statement.HttpStatement
+import io.ktor.client.statement.bodyAsChannel
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.ContentType
+import io.ktor.utils.io.core.writeFully
 import io.ktor.utils.io.pool.DirectByteBufferPool
 import io.ktor.utils.io.pool.useInstance
 import java.io.File
+import java.io.RandomAccessFile
 import java.nio.ByteBuffer
+import java.nio.channels.FileChannel
 import kotlin.math.ceil
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.delay
+import kotlinx.serialization.SerializationException
 import kotlinx.serialization.json.add
 import kotlinx.serialization.json.addJsonArray
 import kotlinx.serialization.json.put
 import moe.tarsin.coroutines.removeAllSuspend
 import moe.tarsin.coroutines.runSuspendCatching
-import okhttp3.MediaType
-import okhttp3.MediaType.Companion.toMediaType
-import okhttp3.MultipartBody
-import okhttp3.Request
-import okhttp3.RequestBody.Companion.asRequestBody
 import org.jsoup.Jsoup
 import splitties.init.appCtx

-private const val TAG = "EhEngine"
+// https://ehwiki.org/wiki/API#Basics
 private const val MAX_REQUEST_SIZE = 25
-private const val U_CONFIG_TEXT = "Selected Profile"
-private val MEDIA_TYPE_JPEG: MediaType = "image/jpeg".toMediaType()
+private const val MAX_SEQUENTIAL_REQUESTS = 5
+private const val REQUEST_INTERVAL = 5000L

-private fun rethrowExactly(code: Int, body: String, e: Throwable): Nothing {
+private const val U_CONFIG_TEXT = "Selected Profile"
+
+fun Either<String, ByteBuffer>.saveParseError(e: Throwable) {
+    val dir = AppConfig.externalParseErrorDir ?: return
+    val file = File(dir, ReadableTime.getFilenamableTime(System.currentTimeMillis()) + ".txt")
+    RandomAccessFile(file, "rw").use { randomAccessFile ->
+        with(randomAccessFile) {
+            writeUTF(e.message + "\n")
+            onLeft { writeUTF(it) }
+            onRight { channel.write(it) }
+        }
+    }
+}
+
+fun rethrowExactly(code: Int, body: Either<String, ByteBuffer>, e: Throwable): Nothing {
    // Don't translate coroutine cancellation
    if (e is CancellationException) throw e

    // Check sad panda(without panda)
-    if (body.isEmpty()) {
+    val empty = body.fold(
+        { it.isEmpty() },
+        { !it.hasRemaining() },
+    )
+    if (empty) {
        if (EhUtils.isExHentai) {
            throw EhException("Sad Panda\n(without panda)")
        } else {
@@ -92,10 +115,12 @@ private fun rethrowExactly(code: Int, body: String, e: Throwable): Nothing {
    }

    // Check Gallery Not Available
-    if (body.contains("Gallery Not Available - ")) {
-        val error = GalleryNotAvailableParser.parse(body)
-        if (!error.isNullOrBlank()) {
-            throw EhException(error)
+    body.onLeft {
+        if ("Gallery Not Available - " in it) {
+            val error = GalleryNotAvailableParser.parse(it)
+            if (!error.isNullOrBlank()) {
+                throw EhException(error)
+            }
        }
    }

@@ -104,136 +129,112 @@ private fun rethrowExactly(code: Int, body: String, e: Throwable): Nothing {
        throw StatusCodeException(code)
    }

-    if (e is ParseException) {
-        if ("<" !in body) {
-            throw EhException(body)
-        } else {
-            if (Settings.saveParseErrorBody) AppConfig.saveParseErrorBody(e, body)
-            throw EhException(appCtx.getString(R.string.error_parse_error), e)
+    if (e is ParseException || e is SerializationException) {
+        body.onLeft { if ("<" !in it) throw EhException(it) }
+        when (val message = e.cause?.message) {
+            "No hits found!" -> throw EhException(R.string.gallery_list_empty_hit)
+            "No watched tags!" -> throw EhException(R.string.gallery_list_empty_hit_subscription)
+            "Not logged in!" -> throw NotLoggedInException()
+            is String -> if (message.startsWith("Your IP address")) throw EhException(message)
        }
+        if (Settings.saveParseErrorBody) body.saveParseError(e)
+        throw EhException(appCtx.getString(R.string.error_parse_error), e)
    }

    // We can't translate it, rethrow it anyway
    throw e
 }

-val httpContentPool = DirectByteBufferPool(16, 0x20000)
+val httpContentPool = DirectByteBufferPool(8, 0x80000)

-suspend inline fun <T> fetchCompat(url: String, referer: String? = null, crossinline parser: (ByteBuffer) -> T): T {
-    return if (isCronetSupported) {
-        cronetRequest(url, referer).execute {
-            httpContentPool.useInstance { buffer ->
-                awaitBodyFully {
-                    buffer.put(it)
-                }
-                buffer.flip()
-                parser(buffer)
-            }
-        }
-    } else {
-        ehRequest(url, referer).execute {
-            httpContentPool.useInstance { buffer ->
-                while (true) {
-                    if (body.source().read(buffer) == -1) break
-                }
-                buffer.flip()
-                parser(buffer)
-            }
-        }
-    }
+suspend inline fun <T> HttpStatement.fetchUsingAsText(crossinline block: suspend String.() -> T) = execute { response ->
+    val body = response.bodyAsText()
+    runSuspendCatching {
+        block(body)
+    }.onFailure {
+        rethrowExactly(response.status.value, body.left(), it)
+    }.getOrThrow()
 }

-@Suppress("REDUNDANT_INLINE_SUSPEND_FUNCTION_TYPE")
-private suspend inline fun <T> Request.executeAndParsingWith(block: suspend String.() -> T): T {
-    Log.d(TAG, url.toString())
-    return execute {
-        val body = body.string()
-        try {
-            block(body)
-        } catch (e: Exception) {
-            rethrowExactly(code, body, e)
-        }
+suspend inline fun <T> HttpStatement.fetchUsingAsByteBuffer(crossinline block: suspend ByteBuffer.() -> T) = execute { response ->
+    httpContentPool.useInstance { buffer ->
+        with(response.bodyAsChannel()) { while (!isClosedForRead) readAvailable(buffer) }
+        buffer.flip()
+        runSuspendCatching {
+            block(buffer)
+        }.onFailure {
+            rethrowExactly(response.status.value, buffer.right(), it)
+        }.getOrThrow()
    }
 }

 object EhEngine {
-    suspend fun getOriginalImageUrl(url: String, referer: String?): String {
-        Log.d(TAG, url)
-        return ehRequest(url, referer).executeNoRedirect {
-            header("Location")?.apply {
-                if (contains("bounce_login")) {
-                    throw NotLoggedInException()
-                }
-            } ?: throw InsufficientFundsException()
-        }
+    suspend fun getOriginalImageUrl(url: String, referer: String?) = noRedirectEhRequest(url, referer).execute { response ->
+        val location = response.headers["Location"] ?: throw InsufficientFundsException()
+        location.takeIf { "bounce_login" !in it } ?: throw NotLoggedInException()
    }

    suspend fun getTorrentList(url: String, gid: Long, token: String?): TorrentResult {
        val referer = EhUrl.getGalleryDetailUrl(gid, token)
-        return fetchCompat(url, referer, TorrentParser::parse)
+        return ehRequest(url, referer).fetchUsingAsByteBuffer(TorrentParser::parse)
    }

    suspend fun getArchiveList(url: String, gid: Long, token: String?) = ehRequest(url, EhUrl.getGalleryDetailUrl(gid, token))
-        .executeAndParsingWith(ArchiveParser::parse)
-        .apply { funds = funds ?: ehRequest(EhUrl.URL_FUNDS).executeAndParsingWith(HomeParser::parseFunds) }
+        .fetchUsingAsText(ArchiveParser::parse)
+        .apply { funds = funds ?: ehRequest(EhUrl.URL_FUNDS).fetchUsingAsText(HomeParser::parseFunds) }

    suspend fun getImageLimits() = parZip(
-        { fetchCompat(EhUrl.URL_HOME, parser = HomeParser::parse) },
-        { ehRequest(EhUrl.URL_FUNDS).executeAndParsingWith(HomeParser::parseFunds) },
+        { ehRequest(EhUrl.URL_HOME).fetchUsingAsByteBuffer(HomeParser::parse) },
+        { ehRequest(EhUrl.URL_FUNDS).fetchUsingAsText(HomeParser::parseFunds) },
        { limits, funds -> HomeParser.Result(limits, funds) },
    )

    suspend fun getNews(parse: Boolean) = ehRequest(EhUrl.URL_NEWS, EhUrl.REFERER_E)
-        .executeAndParsingWith { if (parse) EventPaneParser.parse(this) else null }
+        .fetchUsingAsText { if (parse) EventPaneParser.parse(this) else null }

    suspend fun getProfile(): ProfileParser.Result {
-        val url = ehRequest(EhUrl.URL_FORUMS).executeAndParsingWith(ForumsParser::parse)
-        return ehRequest(url, EhUrl.URL_FORUMS).executeAndParsingWith(ProfileParser::parse)
+        val url = ehRequest(EhUrl.URL_FORUMS).fetchUsingAsText(ForumsParser::parse)
+        return ehRequest(url, EhUrl.URL_FORUMS).fetchUsingAsText(ProfileParser::parse)
    }

    suspend fun getUConfig(url: String = EhUrl.uConfigUrl) {
        runSuspendCatching {
-            ehRequest(url).executeAndParsingWith { check(contains(U_CONFIG_TEXT)) { "Unable to load config from $url!" } }
-        }.onFailure {
+            ehRequest(url).fetchUsingAsText { check(U_CONFIG_TEXT in this) { "Unable to load config from $url!" } }
+        }.onFailure { throwable ->
            // It may get redirected when accessing ex for the first time
            if (url == EhUrl.URL_UCONFIG_EX) {
-                it.printStackTrace()
-                ehRequest(url).executeAndParsingWith { check(contains(U_CONFIG_TEXT)) { "Unable to load config from $url!" } }
+                throwable.printStackTrace()
+                ehRequest(url).fetchUsingAsText { check(U_CONFIG_TEXT in this) { "Unable to load config from $url!" } }
            } else {
-                throw it
+                throw throwable
            }
        }
    }

-    suspend fun getGalleryPage(
-        url: String,
-        gid: Long,
-        token: String?,
-    ): GalleryPageParser.Result {
+    suspend fun getGalleryPage(url: String, gid: Long, token: String?): GalleryPageParser.Result {
        val referer = EhUrl.getGalleryDetailUrl(gid, token)
-        return ehRequest(url, referer).executeAndParsingWith(GalleryPageParser::parse)
+        return ehRequest(url, referer).fetchUsingAsText(GalleryPageParser::parse)
    }

-    suspend fun getGalleryList(url: String) = ehRequest(url, EhUrl.referer)
-        .executeAndParsingWith(GalleryListParser::parse)
-        .apply { fillGalleryList(galleryInfoList, url, true) }
+    suspend fun getGalleryList(url: String) = ehRequest(url, EhUrl.referer).fetchUsingAsByteBuffer(GalleryListParser::parse)
+        .apply { galleryInfoList.fillInfo(url, true) }
        .takeUnless { it.galleryInfoList.isEmpty() } ?: GalleryListParser.emptyResult

-    suspend fun getGalleryDetail(url: String) = ehRequest(url, EhUrl.referer).executeAndParsingWith {
-        EventPaneParser.parse(this)?.let {
-            Settings.lastDawnDay = today
-            showEventNotification(it)
+    suspend fun getGalleryDetail(url: String) = ehRequest(url, EhUrl.referer).fetchUsingAsText {
+        val eventPane = EventPaneParser.parse(this)
+        if (eventPane != null) {
+            Settings.lastDawnDays = today
+            showEventNotification(eventPane)
        }
        GalleryDetailParser.parse(this)
    }

-    suspend fun getPreviewList(url: String) = ehRequest(url, EhUrl.referer).executeAndParsingWith {
+    suspend fun getPreviewList(url: String) = ehRequest(url, EhUrl.referer).fetchUsingAsText {
        GalleryDetailParser.parsePreviewList(this) to GalleryDetailParser.parsePreviewPages(this)
    }

-    suspend fun getFavorites(url: String) = ehRequest(url, EhUrl.referer)
-        .executeAndParsingWith(FavoritesParser::parse)
-        .apply { fillGalleryList(galleryInfoList, url) }
+    suspend fun getFavorites(url: String) = ehRequest(url, EhUrl.referer).fetchUsingAsByteBuffer(FavoritesParser::parse)
+        .apply { galleryInfoList.fillInfo(url) }

    suspend fun signIn(username: String, password: String): String {
        val referer = "https://forums.e-hentai.org/index.php?act=Login&CODE=00"
@@ -241,99 +242,83 @@ object EhEngine {
        val origin = "https://forums.e-hentai.org"
        return ehRequest(url, referer, origin) {
            formBody {
-                add("referer", referer)
-                add("b", "")
-                add("bt", "")
-                add("UserName", username)
-                add("PassWord", password)
-                add("CookieDate", "1")
+                append("referer", referer)
+                append("b", "")
+                append("bt", "")
+                append("UserName", username)
+                append("PassWord", password)
+                append("CookieDate", "1")
            }
-        }.executeAndParsingWith(SignInParser::parse)
+        }.fetchUsingAsText(SignInParser::parse)
    }

-    suspend fun commentGallery(url: String, comment: String, id: String?) = ehRequest(url, url, EhUrl.origin) {
+    suspend fun commentGallery(url: String, comment: String, id: Long = -1) = ehRequest(url, url, EhUrl.origin) {
        formBody {
-            if (id == null) {
-                add("commenttext_new", comment)
+            if (id == -1L) {
+                append("commenttext_new", comment)
            } else {
-                add("commenttext_edit", comment)
-                add("edit_comment", id)
+                append("commenttext_edit", comment)
+                append("edit_comment", id.toString())
            }
        }
-    }.executeAndParsingWith {
-        val document = Jsoup.parse(this)
-        val elements = document.select("#chd + p")
-        if (elements.size > 0) {
-            throw EhException(elements[0].text())
+    }.execute { response ->
+        // Ktor does not handle POST redirect, we need to do it manually
+        // https://youtrack.jetbrains.com/issue/KTOR-478
+        val location = response.headers["Location"] ?: url
+        ehRequest(location, url).fetchUsingAsText {
+            val document = Jsoup.parse(this)
+            val elements = document.select("#chd + p")
+            if (elements.size > 0) {
+                throw EhException(elements[0].text())
+            }
+            GalleryDetailParser.parseComments(document)
        }
-        GalleryDetailParser.parseComments(document)
    }

-    /**
-     * @param dstCat -1 for delete, 0 - 9 for cloud favorite, others throw Exception
-     * @param note   max 250 characters
-     */
-    suspend fun modifyFavorites(
-        gid: Long,
-        token: String?,
-        dstCat: Int = -1,
-        note: String = "",
-    ) {
+    suspend fun modifyFavorites(gid: Long, token: String?, dstCat: Int = -1, note: String = "") {
        val catStr: String = when (dstCat) {
            -1 -> "favdel"
            in 0..9 -> dstCat.toString()
            else -> throw EhException("Invalid dstCat: $dstCat")
        }
        val url = EhUrl.getAddFavorites(gid, token)
-        return ehRequest(url, url, EhUrl.origin) {
+        ehRequest(url, url, EhUrl.origin) {
            formBody {
-                add("favcat", catStr)
-                add("favnote", note)
+                append("favcat", catStr)
+                append("favnote", note)
                // apply=Add+to+Favorites is not necessary, just use apply=Apply+Changes all the time
-                add("apply", "Apply Changes")
-                add("update", "1")
+                append("apply", "Apply Changes")
+                append("update", "1")
            }
-        }.executeAndParsingWith { }
+        }.execute { }
    }

-    suspend fun downloadArchive(
-        gid: Long,
-        token: String?,
-        or: String?,
-        res: String?,
-        isHAtH: Boolean,
-    ): String? {
-        if (or.isNullOrEmpty()) {
-            throw EhException("Invalid form param or: $or")
-        }
-        if (res.isNullOrEmpty()) {
-            throw EhException("Invalid res: $res")
-        }
+    suspend fun downloadArchive(gid: Long, token: String?, or: String?, res: String?, isHAtH: Boolean): String? {
+        if (or.isNullOrEmpty()) throw EhException("Invalid form param or: $or")
+        if (res.isNullOrEmpty()) throw EhException("Invalid res: $res")
        val url = EhUrl.getDownloadArchive(gid, token, or)
        val referer = EhUrl.getGalleryDetailUrl(gid, token)
        val request = ehRequest(url, referer, EhUrl.origin) {
            formBody {
                if (isHAtH) {
-                    add("hathdl_xres", res)
+                    append("hathdl_xres", res)
                } else {
-                    add("dltype", res)
+                    append("dltype", res)
                    if (res == "org") {
-                        add("dlcheck", "Download Original Archive")
+                        append("dlcheck", "Download Original Archive")
                    } else {
-                        add("dlcheck", "Download Resample Archive")
+                        append("dlcheck", "Download Resample Archive")
                    }
                }
            }
        }
-        var result = request.executeAndParsingWith(ArchiveParser::parseArchiveUrl)
+        var result = request.fetchUsingAsText(ArchiveParser::parseArchiveUrl)
        if (!isHAtH) {
            if (result == null) {
                // Wait for the server to prepare archives
                delay(1000)
-                result = request.executeAndParsingWith(ArchiveParser::parseArchiveUrl)
-                if (result == null) {
-                    throw EhException("Archive unavailable")
-                }
+                result = request.fetchUsingAsText(ArchiveParser::parseArchiveUrl)
+                if (result == null) throw EhException("Archive unavailable")
            }
            return result
        }
@@ -342,11 +327,14 @@ object EhEngine {

    suspend fun resetImageLimits() = ehRequest(EhUrl.URL_HOME) {
        formBody {
-            add("reset_imagelimit", "Reset Limit")
+            append("reset_imagelimit", "Reset Limit")
        }
-    }.executeAndParsingWith(HomeParser::parseResetLimits)
+    }.fetchUsingAsText(HomeParser::parseResetLimits)

-    suspend fun modifyFavorites(url: String, gidArray: LongArray, dstCat: Int): FavoritesParser.Result {
+    suspend fun modifyFavorites(gidArray: LongArray, srcCat: Int, dstCat: Int): FavParserResult {
+        val url = ehUrl(EhUrl.FAV_PATH) {
+            if (FavListUrlBuilder.isValidFavCat(srcCat)) addQueryParameter("favcat", srcCat.toString())
+        }.buildString()
        val catStr: String = when (dstCat) {
            -1 -> "delete"
            in 0..9 -> "fav$dstCat"
@@ -354,19 +342,13 @@ object EhEngine {
        }
        return ehRequest(url, url, EhUrl.origin) {
            formBody {
-                add("ddact", catStr)
-                gidArray.forEach { add("modifygids[]", it.toString()) }
+                append("ddact", catStr)
+                gidArray.forEach { append("modifygids[]", it.toString()) }
            }
-        }.executeAndParsingWith(FavoritesParser::parse).apply { fillGalleryList(galleryInfoList, url) }
+        }.fetchUsingAsByteBuffer(FavoritesParser::parse).apply { galleryInfoList.fillInfo(url) }
    }

-    suspend fun getGalleryPageApi(
-        gid: Long,
-        index: Int,
-        pToken: String,
-        showKey: String?,
-        previousPToken: String?,
-    ): GalleryPageApiParser.Result {
+    suspend fun getGalleryPageApi(gid: Long, index: Int, pToken: String, showKey: String?, previousPToken: String?): GalleryPageParser.Result {
        val referer = if (index > 0 && previousPToken != null) EhUrl.getPageUrl(gid, index - 1, previousPToken) else null
        return ehRequest(EhUrl.apiUrl, referer, EhUrl.origin) {
            jsonBody {
@@ -376,16 +358,10 @@ object EhEngine {
                put("imgkey", pToken)
                put("showkey", showKey)
            }
-        }.executeAndParsingWith(GalleryPageApiParser::parse)
+        }.fetchUsingAsText { GalleryPageParser.parse(filterNot { it == '\\' }) }
    }

-    suspend fun rateGallery(
-        apiUid: Long,
-        apiKey: String?,
-        gid: Long,
-        token: String?,
-        rating: Float,
-    ): RateGalleryResult = ehRequest(EhUrl.apiUrl, EhUrl.getGalleryDetailUrl(gid, token), EhUrl.origin) {
+    suspend fun rateGallery(apiUid: Long, apiKey: String?, gid: Long, token: String?, rating: Float): RateGalleryResult = ehRequest(EhUrl.apiUrl, EhUrl.getGalleryDetailUrl(gid, token), EhUrl.origin) {
        jsonBody {
            put("method", "rategallery")
            put("apiuid", apiUid)
@@ -394,62 +370,56 @@ object EhEngine {
            put("token", token)
            put("rating", ceil((rating * 2).toDouble()).toInt())
        }
-    }.executeAndParsingWith(String::parseAs)
+    }.fetchUsingAsText(String::parseAs)

-    suspend fun fillGalleryListByApi(galleryInfoList: List<GalleryInfo>, referer: String) = galleryInfoList.chunked(MAX_REQUEST_SIZE).parMap {
-        ehRequest(EhUrl.apiUrl, referer, EhUrl.origin) {
-            jsonBody {
-                put("method", "gdata")
-                array("gidlist") {
-                    it.forEach {
-                        addJsonArray {
-                            add(it.gid)
-                            add(it.token)
+    suspend fun fillGalleryListByApi(galleryInfoList: List<GalleryInfo>, referer: String) =
+        galleryInfoList.chunked(MAX_REQUEST_SIZE).chunked(MAX_SEQUENTIAL_REQUESTS).forEachIndexed { index, chunk ->
+            if (index != 0) {
+                delay(REQUEST_INTERVAL)
+            }
+            chunk.parMap {
+                ehRequest(EhUrl.apiUrl, referer, EhUrl.origin) {
+                    jsonBody {
+                        put("method", "gdata")
+                        array("gidlist") {
+                            it.forEach {
+                                addJsonArray {
+                                    add(it.gid)
+                                    add(it.token)
+                                }
+                            }
                        }
+                        put("namespace", 1)
                    }
-                }
-                put("namespace", 1)
+                }.fetchUsingAsText { GalleryApiParser.parse(this, it) }
            }
-        }.executeAndParsingWith { GalleryApiParser.parse(this, it) }
-    }
-
-    suspend fun voteComment(
-        apiUid: Long,
-        apiKey: String?,
-        gid: Long,
-        token: String?,
-        commentId: Long,
-        commentVote: Int,
-    ): VoteCommentResult = ehRequest(EhUrl.apiUrl, EhUrl.referer, EhUrl.origin) {
-        jsonBody {
-            put("method", "votecomment")
-            put("apiuid", apiUid)
-            put("apikey", apiKey)
-            put("gid", gid)
-            put("token", token)
-            put("comment_id", commentId)
-            put("comment_vote", commentVote)
        }
-    }.executeAndParsingWith(String::parseAs)

-    suspend fun voteTag(
-        apiUid: Long,
-        apiKey: String?,
-        gid: Long,
-        token: String?,
-        tags: String?,
-        vote: Int,
-    ) = ehRequest(EhUrl.apiUrl, EhUrl.referer, EhUrl.origin) {
-        jsonBody {
-            put("method", "taggallery")
-            put("apiuid", apiUid)
-            put("apikey", apiKey)
-            put("gid", gid)
-            put("token", token)
-            put("tags", tags)
-            put("vote", vote)
-        }
-    }.executeAndParsingWith(VoteTagParser::parse)
+    suspend fun voteComment(apiUid: Long, apiKey: String?, gid: Long, token: String?, commentId: Long, commentVote: Int): VoteCommentResult =
+        ehRequest(EhUrl.apiUrl, EhUrl.referer, EhUrl.origin) {
+            jsonBody {
+                put("method", "votecomment")
+                put("apiuid", apiUid)
+                put("apikey", apiKey)
+                put("gid", gid)
+                put("token", token)
+                put("comment_id", commentId)
+                put("comment_vote", commentVote)
+            }
+        }.fetchUsingAsText(String::parseAs)
+
+    suspend fun voteTag(apiUid: Long, apiKey: String?, gid: Long, token: String?, tags: String?, vote: Int) =
+        ehRequest(EhUrl.apiUrl, EhUrl.referer, EhUrl.origin) {
+            jsonBody {
+                put("method", "taggallery")
+                put("apiuid", apiUid)
+                put("apikey", apiKey)
+                put("gid", gid)
+                put("token", token)
+                put("tags", tags)
+                put("vote", vote)
+            }
+        }.fetchUsingAsText(VoteTagParser::parse)

    suspend fun getGalleryToken(gid: Long, gtoken: String?, page: Int) = ehRequest(EhUrl.apiUrl, EhUrl.referer, EhUrl.origin) {
        jsonBody {
@@ -462,47 +432,44 @@ object EhEngine {
                }
            }
        }
-    }.executeAndParsingWith(GalleryTokenApiParser::parse)
+    }.fetchUsingAsText(GalleryTokenApiParser::parse)

-    /**
-     * @param image Must be jpeg
-     */
-    suspend fun imageSearch(image: File, uss: Boolean, osc: Boolean) = ehRequest(EhUrl.imageSearchUrl, EhUrl.referer, EhUrl.origin) {
-        multipartBody {
-            setType(MultipartBody.FORM)
-            addFormDataPart("sfile", "a.jpg", image.asRequestBody(MEDIA_TYPE_JPEG))
-            if (uss) addFormDataPart("fs_similar", "on")
-            if (osc) addFormDataPart("fs_covers", "on")
-            addFormDataPart("f_sfile", "File Search")
+    suspend fun imageSearch(jpeg: File, uss: Boolean, osc: Boolean): GalleryListResult {
+        val location = noRedirectEhRequest(EhUrl.imageSearchUrl, EhUrl.referer, EhUrl.origin) {
+            multipartBody {
+                append("sfile", "a.jpg", ContentType.Image.JPEG, jpeg.length()) {
+                    RandomAccessFile(jpeg, "r").use {
+                        writeFully(it.channel.map(FileChannel.MapMode.READ_ONLY, 0, it.length()))
+                    }
+                }
+                if (uss) append("fs_similar", "on")
+                if (osc) append("fs_covers", "on")
+                append("f_sfile", "File Search")
+            }
+        }.execute { it.headers["Location"] ?: error("Failed to search image!!!") }
+        return ehRequest(location).fetchUsingAsByteBuffer(GalleryListParser::parse).apply {
+            galleryInfoList.fillInfo(EhUrl.imageSearchUrl)
        }
-    }.executeAndParsingWith(GalleryListParser::parse).apply { fillGalleryList(galleryInfoList, EhUrl.imageSearchUrl) }
-
-    private suspend fun fillGalleryList(list: MutableList<BaseGalleryInfo>, url: String, filter: Boolean = false) {
-        // Filter title and uploader
-        if (filter) list.removeAllSuspend { EhFilter.filterTitle(it) || EhFilter.filterUploader(it) }
-
-        var hasTags = false
-        var hasPages = false
-        var hasRated = false
-        for (gi in list) {
-            if (gi.simpleTags != null) {
-                hasTags = true
-            }
-            if (gi.pages != 0) {
-                hasPages = true
-            }
-            if (gi.rated) {
-                hasRated = true
-            }
-        }
-        val needApi = filter && EhFilter.needTags() && !hasTags || Settings.showGalleryPages && !hasPages || hasRated
-        if (needApi) fillGalleryListByApi(list, url)
-
-        // Filter tag, thumbnail mode need filter uploader again
-        if (filter) list.removeAllSuspend { EhFilter.filterUploader(it) || EhFilter.filterTag(it) || EhFilter.filterTagNamespace(it) }
    }

-    suspend fun modifyFavoritesRange(galleryList: List<Pair<Long, String>>, dstCat: Int) {
-        galleryList.forEach { (gid, token) -> modifyFavorites(gid, token, dstCat) }
+    private suspend fun MutableList<BaseGalleryInfo>.fillInfo(url: String, filter: Boolean = false) = with(EhFilter) {
+        if (filter) removeAllSuspend { filterTitle(it) || filterUploader(it) }
+        val hasTags = any { !it.simpleTags.isNullOrEmpty() }
+        val hasPages = any { it.pages != 0 }
+        val hasRated = any { it.rated }
+        val needApi = filter && needTags() && !hasTags || Settings.showGalleryPages && !hasPages || hasRated
+        if (needApi) fillGalleryListByApi(this@fillInfo, url)
+        if (filter) removeAllSuspend { filterUploader(it) || filterTag(it) || filterTagNamespace(it) }
+    }
+
+    suspend fun addFavorites(galleryList: List<Pair<Long, String>>, dstCat: Int) {
+        galleryList.chunked(MAX_SEQUENTIAL_REQUESTS).forEachIndexed { index, chunk ->
+            if (index != 0) {
+                delay(REQUEST_INTERVAL)
+            }
+            chunk.parMap { (gid, token) ->
+                modifyFavorites(gid, token, dstCat)
+            }
+        }
    }
 }
@@ -17,17 +17,17 @@ object EhFilter : CoroutineScope {
    val filters = async { EhDB.getAllFilter() as MutableList }
    private suspend inline fun anyActive(mode: FilterMode, predicate: (Filter) -> Boolean) = filters.await().any { it.mode == mode && it.enable && predicate(it) }
    private fun <R> Filter.launchOps(
-        callback: ((R) -> Unit)? = null,
+        callback: (suspend (R) -> Unit)? = null,
        ops: suspend Filter.() -> R,
    ) = launch { ops().let { callback?.invoke(it) } }
-    fun Filter.remember(callback: ((Boolean) -> Unit)? = null) = launchOps(callback) {
+    fun Filter.remember(callback: (suspend (Boolean) -> Unit)? = null) = launchOps(callback) {
        EhDB.addFilter(this).also { if (it) filters.await().add(this) }
    }
-    fun Filter.trigger(callback: ((Unit) -> Unit)? = null) = launchOps(callback) {
+    fun Filter.trigger(callback: (suspend (Unit) -> Unit)? = null) = launchOps(callback) {
        enable = !enable
        EhDB.updateFilter(this)
    }
-    fun Filter.forget(callback: ((Unit) -> Unit)? = null) = launchOps(callback) {
+    fun Filter.forget(callback: (suspend (Unit) -> Unit)? = null) = launchOps(callback) {
        EhDB.deleteFilter(this)
        filters.await().remove(this)
    }
@@ -15,109 +15,37 @@
 */
 package com.hippo.ehviewer.client

-import android.util.Log
-import com.hippo.ehviewer.EhApplication.Companion.baseOkHttpClient
-import com.hippo.ehviewer.EhApplication.Companion.noRedirectOkHttpClient
-import com.hippo.ehviewer.EhApplication.Companion.okHttpClient
-import kotlin.contracts.InvocationKind
-import kotlin.contracts.contract
-import kotlin.coroutines.resume
-import kotlin.coroutines.resumeWithException
-import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.suspendCancellableCoroutine
+import com.hippo.ehviewer.EhApplication.Companion.ktorClient
+import com.hippo.ehviewer.EhApplication.Companion.noRedirectKtorClient
+import com.hippo.ehviewer.Settings
+import eu.kanade.tachiyomi.util.system.logcat
+import io.ktor.client.request.HttpRequestBuilder
+import io.ktor.client.request.forms.FormBuilder
+import io.ktor.client.request.forms.FormDataContent
+import io.ktor.client.request.forms.MultiPartFormDataContent
+import io.ktor.client.request.forms.formData
+import io.ktor.client.request.header
+import io.ktor.client.request.prepareRequest
+import io.ktor.client.request.setBody
+import io.ktor.client.statement.HttpStatement
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.ContentType
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpMethod
+import io.ktor.http.ParametersBuilder
+import io.ktor.http.content.TextContent
+import io.ktor.http.userAgent
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonArrayBuilder
 import kotlinx.serialization.json.JsonObjectBuilder
 import kotlinx.serialization.json.buildJsonArray
 import kotlinx.serialization.json.buildJsonObject
 import kotlinx.serialization.json.okio.decodeFromBufferedSource
-import okhttp3.Call
-import okhttp3.FormBody
-import okhttp3.MediaType
-import okhttp3.MediaType.Companion.toMediaType
-import okhttp3.MultipartBody
-import okhttp3.Request
-import okhttp3.RequestBody.Companion.toRequestBody
-import okhttp3.Response
-import okhttp3.executeAsync
 import okio.BufferedSource

-inline fun ehRequest(url: String, referer: String? = null, origin: String? = null, builder: Request.Builder.() -> Unit = {}) = Request.Builder().url(url).apply {
-    addHeader("User-Agent", CHROME_USER_AGENT)
-    addHeader("Accept", CHROME_ACCEPT)
-    addHeader("Accept-Language", CHROME_ACCEPT_LANGUAGE)
-    referer?.let { addHeader("Referer", it) }
-    origin?.let { addHeader("Origin", it) }
-}.apply(builder).build()
-
-inline fun Request.Builder.formBody(builder: FormBody.Builder.() -> Unit) = post(FormBody.Builder().apply(builder).build())
-
-inline fun Request.Builder.multipartBody(builder: MultipartBody.Builder.() -> Unit) = post(MultipartBody.Builder().apply(builder).build())
-
-val MEDIA_TYPE_JSON: MediaType = "application/json; charset=utf-8".toMediaType()
-
 inline fun JsonObjectBuilder.array(name: String, builder: JsonArrayBuilder.() -> Unit) = put(name, buildJsonArray(builder))

-inline fun Request.Builder.jsonBody(builder: JsonObjectBuilder.() -> Unit) = post(buildJsonObject(builder).toString().toRequestBody(MEDIA_TYPE_JSON))
-
-const val TAG_CALL = "CancellableCallReadingScope"
-
-// This scoped response reading scope suspend function aimed at cancelling the call immediately once coroutine is cancelled.
-// i.e., bind a call with a suspended coroutine, and launch another coroutine to execute reading
-// Once origin coroutine is cancelled, then call cancelled, socket is closed, the reading coroutine will encounter [IOException]
-// Since Okio is not suspendable/cancellable, also okhttp, [executeAsync] only make [Request -> Response] cancellable, reading a Response is still not cancellable
-// Considering interrupting is not safe and performant, See https://github.com/Kotlin/kotlinx.coroutines/issues/3551#issuecomment-1353245978, we have such [usingCancellable]
-// TODO: Remove logging after this function stable
-suspend inline fun <R> Call.usingCancellable(crossinline block: suspend Response.() -> R): R = executeAsync().use {
-    val call = this
-    Log.d(TAG_CALL, "Got response of call$call")
-    coroutineScope {
-        suspendCancellableCoroutine<R> { cont ->
-            launch {
-                val r = runCatching {
-                    Log.d(TAG_CALL, "Reading response of call$call")
-                    block(it)
-                }
-                if (!isCanceled() && cont.isActive) {
-                    r.exceptionOrNull()?.let {
-                        Log.e(TAG_CALL, "Reading response of call$call failed!")
-                        cont.resumeWithException(it)
-                    }
-                    r.getOrNull()?.let {
-                        Log.d(TAG_CALL, "Reading response of call$call succeed!")
-                        cont.resume(it)
-                    }
-                } else if (isCanceled() && cont.isActive) {
-                    Log.e(TAG_CALL, "call$call cancelled but coroutine is Active!")
-                } else if (!isCanceled() && !cont.isActive) {
-                    Log.e(TAG_CALL, "call$call not cancelled but coroutine is Dead!")
-                } else {
-                    Log.d(TAG_CALL, "Reading response of call$call cancelled")
-                }
-            }
-            cont.invokeOnCancellation {
-                Log.d(TAG_CALL, "Cancelling call$call")
-                cancel()
-            }
-        }
-    }.apply {
-        Log.d(TAG_CALL, "Reading response of call$call finished!")
-    }
-}
-
-suspend inline fun <R> Request.execute(block: Response.() -> R): R {
-    contract {
-        callsInPlace(block, InvocationKind.EXACTLY_ONCE)
-    }
-    return okHttpClient.newCall(this).executeAsync().use(block)
-}
-suspend inline fun <R> Request.executeNonCache(crossinline block: suspend Response.() -> R) = baseOkHttpClient.newCall(this).usingCancellable(block)
-suspend inline fun <R> Request.executeNoRedirect(block: Response.() -> R) = noRedirectOkHttpClient.newCall(this).executeAsync().use(block)
-
-suspend inline fun <reified T> Request.executeAndParseAs() = execute { parseAs<T>() }
-
-inline fun <reified T> Response.parseAs(): T = body.source().parseAs()
+suspend inline fun <reified T> HttpStatement.executeAndParseAs() = execute { it.bodyAsText().parseAs<T>() }
 inline fun <reified T> BufferedSource.parseAs(): T = json.decodeFromBufferedSource(this)
 inline fun <reified T> String.parseAs(): T = json.decodeFromString(this)

@@ -126,3 +54,50 @@ val json = Json { ignoreUnknownKeys = true }
 const val CHROME_USER_AGENT = "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Mobile Safari/537.36"
 const val CHROME_ACCEPT = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"
 const val CHROME_ACCEPT_LANGUAGE = "en-US,en;q=0.5"
+
+fun HttpRequestBuilder.applyEhConfig(referer: String?, origin: String?) {
+    method = HttpMethod.Get
+    header("Referer", referer)
+    header("Origin", origin)
+    userAgent(Settings.userAgent)
+    header(HttpHeaders.Accept, CHROME_ACCEPT)
+    header(HttpHeaders.AcceptLanguage, CHROME_ACCEPT_LANGUAGE)
+}
+
+suspend inline fun ehRequest(
+    url: String,
+    referer: String? = null,
+    origin: String? = null,
+    verbose: Boolean = true,
+    builder: HttpRequestBuilder.() -> Unit = {},
+) = ktorClient.prepareRequest(url) {
+    applyEhConfig(referer, origin)
+    apply(builder)
+}.also { if (verbose) logcat("EhRequest") { url } }
+
+suspend inline fun noRedirectEhRequest(
+    url: String,
+    referer: String? = null,
+    origin: String? = null,
+    builder: HttpRequestBuilder.() -> Unit = {},
+) = noRedirectKtorClient.prepareRequest(url) {
+    applyEhConfig(referer, origin)
+    apply(builder)
+}.also { logcat("EhRequest") { url } }
+
+inline fun HttpRequestBuilder.formBody(builder: ParametersBuilder.() -> Unit) {
+    method = HttpMethod.Post
+    val parameters = ParametersBuilder().apply(builder).build()
+    setBody(FormDataContent(parameters))
+}
+
+inline fun HttpRequestBuilder.jsonBody(builder: JsonObjectBuilder.() -> Unit) {
+    method = HttpMethod.Post
+    val json = buildJsonObject(builder).toString()
+    setBody(TextContent(text = json, contentType = ContentType.Application.Json))
+}
+
+fun HttpRequestBuilder.multipartBody(builder: FormBuilder.() -> Unit) {
+    method = HttpMethod.Post
+    setBody(MultiPartFormDataContent(formData(builder)))
+}
@@ -19,11 +19,16 @@ import android.content.Context
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
-import com.hippo.ehviewer.EhApplication.Companion.baseOkHttpClient
+import com.hippo.ehviewer.EhApplication.Companion.ktorClient
 import com.hippo.ehviewer.R
 import com.hippo.ehviewer.util.AppConfig
 import com.hippo.ehviewer.util.FileUtils
-import com.hippo.ehviewer.util.copyToFile
+import com.hippo.ehviewer.util.StatusCodeException
+import com.hippo.ehviewer.util.copyTo
+import io.ktor.client.HttpClient
+import io.ktor.client.request.prepareGet
+import io.ktor.client.statement.bodyAsChannel
+import io.ktor.http.isSuccess
 import java.io.File
 import java.nio.charset.StandardCharsets
 import kotlinx.coroutines.CoroutineScope
@@ -35,9 +40,6 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import moe.tarsin.coroutines.runSuspendCatching
-import okhttp3.OkHttpClient
-import okhttp3.Request
-import okhttp3.executeAsync
 import okio.BufferedSource
 import okio.HashingSink.Companion.sha1
 import okio.blackholeSink
@@ -55,7 +57,6 @@ object EhTagDatabase : CoroutineScope {
    )
    private lateinit var tagGroups: Map<String, Map<String, String>>
    private val updateLock = Mutex()
-    private val dbLock = Mutex()
    override val coroutineContext = Dispatchers.IO + Job()

    var initialized by mutableStateOf(false)
@@ -176,24 +177,18 @@ object EhTagDatabase : CoroutineScope {
        return sha1 != null && sha1 == getFileSha1(data)
    }

-    private suspend fun save(client: OkHttpClient, url: String, file: File): Boolean {
-        val request: Request = Request.Builder().url(url).build()
-        val call = client.newCall(request)
+    private suspend fun save(client: HttpClient, url: String, file: File) {
        runCatching {
-            call.executeAsync().use { response ->
-                if (!response.isSuccessful) {
-                    return false
+            client.prepareGet(url).execute {
+                if (it.status.isSuccess()) {
+                    it.bodyAsChannel().copyTo(file)
+                } else {
+                    throw StatusCodeException(it.status.value)
                }
-                response.body.use {
-                    it.copyToFile(file)
-                }
-                return true
            }
        }.onFailure {
            file.delete()
-            it.printStackTrace()
-        }
-        return false
+        }.getOrThrow()
    }

    suspend fun update() {
@@ -202,42 +197,42 @@ object EhTagDatabase : CoroutineScope {
        }
    }

-    private suspend fun issueUpdateInMemoryData() {
-        dbLock.withLock {
-            getMetadata(appCtx)?.let { urls ->
-                val dataName = urls[2]
-                val dir = AppConfig.getFilesDir("tag-translations")
-                val dataFile = File(dir, dataName).takeIf { it.exists() } ?: return
-                runSuspendCatching {
-                    tagGroups = dataFile.source().buffer().use(BufferedSource::parseAs)
-                    initialized = true
-                }.onFailure {
-                    it.printStackTrace()
-                }
-            }
-        }
+    private fun issueUpdateInMemoryData(file: File? = null) {
+        val dataFile = file ?: getMetadata(appCtx)?.let { metadata ->
+            val dataName = metadata[2]
+            val dir = AppConfig.getFilesDir("tag-translations")
+            File(dir, dataName).takeIf { it.exists() }
+        } ?: return
+        tagGroups = dataFile.source().buffer().use(BufferedSource::parseAs)
+        initialized = true
    }

    init {
        launch {
-            issueUpdateInMemoryData()
+            updateLock.withLock {
+                runSuspendCatching {
+                    issueUpdateInMemoryData()
+                }.onFailure {
+                    it.printStackTrace()
+                }
+                updateInternal()
+            }
        }
    }

    private suspend fun updateInternal() {
-        val urls = getMetadata(appCtx)
-        urls?.let {
-            val sha1Name = urls[0]
-            val sha1Url = urls[1]
-            val dataName = urls[2]
-            val dataUrl = urls[3]
+        getMetadata(appCtx)?.let { metadata ->
+            val sha1Name = metadata[0]
+            val sha1Url = metadata[1]
+            val dataName = metadata[2]
+            val dataUrl = metadata[3]

            val dir = AppConfig.getFilesDir("tag-translations")
            checkNotNull(dir)
            val sha1File = File(dir, sha1Name)
            val dataFile = File(dir, dataName)

-            runCatching {
+            runSuspendCatching {
                // Check current sha1 and current data
                val sha1 = getFileContent(sha1File)
                if (!checkData(sha1, dataFile)) {
@@ -247,25 +242,25 @@ object EhTagDatabase : CoroutineScope {

                // Save new sha1
                val tempSha1File = File(dir, "$sha1Name.tmp")
-                check(save(baseOkHttpClient, sha1Url, tempSha1File))
+                save(ktorClient, sha1Url, tempSha1File)
                val tempSha1 = getFileContent(tempSha1File)

                // Check new sha1 and current sha1
                if (tempSha1 == sha1) {
                    // The data is the same
                    FileUtils.delete(tempSha1File)
-                    return@runCatching
+                    return
                }

                // Save new data
                val tempDataFile = File(dir, "$dataName.tmp")
-                check(save(baseOkHttpClient, dataUrl, tempDataFile))
+                save(ktorClient, dataUrl, tempDataFile)

                // Check new sha1 and new data
                if (!checkData(tempSha1, tempDataFile)) {
                    FileUtils.delete(tempSha1File)
                    FileUtils.delete(tempDataFile)
-                    return@runCatching
+                    return
                }

                // Replace current sha1 and current data with new sha1 and new data
@@ -275,7 +270,7 @@ object EhTagDatabase : CoroutineScope {
                tempDataFile.renameTo(dataFile)

                // Read new EhTagDatabase
-                issueUpdateInMemoryData()
+                issueUpdateInMemoryData(dataFile)
            }.onFailure {
                it.printStackTrace()
            }
@@ -16,7 +16,10 @@
 package com.hippo.ehviewer.client

 import com.hippo.ehviewer.Settings
-import okhttp3.HttpUrl
+import io.ktor.http.Parameters
+import io.ktor.http.ParametersBuilder
+import io.ktor.http.URLBuilder
+import io.ktor.http.URLProtocol

 object EhUrl {
    const val SITE_E = 0
@@ -120,35 +123,41 @@ object EhUrl {
        return getGalleryDetailUrl(gid, token, 0, false)
    }

-    fun getGalleryDetailUrl(gid: Long, token: String?, index: Int, allComment: Boolean) = ehUrl {
-        addPathSegments("g/$gid/$token/")
+    fun getGalleryDetailUrl(gid: Long, token: String?, index: Int, allComment: Boolean) = ehUrl(listOf("g", gid.toString(), token.orEmpty())) {
        if (index != 0) addQueryParameter("p", "$index")
        if (allComment) addQueryParameter("hc", "1")
-    }.toString()
+    }.buildString()

-    fun getGalleryMultiPageViewerUrl(gid: Long, token: String) = ehUrl {
-        addPathSegments("mpv/$gid/$token/")
-    }.toString()
+    fun getGalleryMultiPageViewerUrl(gid: Long, token: String) = ehUrl(listOf("mpv", gid.toString(), token)).buildString()

-    fun getPageUrl(gid: Long, index: Int, pToken: String): String {
-        return host + "s/" + pToken + '/' + gid + '-' + (index + 1)
-    }
+    fun getPageUrl(gid: Long, index: Int, pToken: String) = host + "s/" + pToken + '/' + gid + '-' + (index + 1)

-    fun getAddFavorites(gid: Long, token: String?): String {
-        return host + "gallerypopups.php?gid=" + gid + "&t=" + token + "&act=addfav"
-    }
+    fun getAddFavorites(gid: Long, token: String?) = host + "gallerypopups.php?gid=" + gid + "&t=" + token + "&act=addfav"

-    fun getDownloadArchive(gid: Long, token: String?, or: String): String {
-        return host + "archiver.php?gid=" + gid + "&token=" + token + "&or=" + or
-    }
+    fun getDownloadArchive(gid: Long, token: String?, or: String) = host + "archiver.php?gid=" + gid + "&token=" + token + "&or=" + or

-    fun getTagDefinitionUrl(tag: String): String {
-        return "https://ehwiki.org/wiki/" + tag.replace(' ', '_')
-    }
+    fun getTagDefinitionUrl(tag: String) = "https://ehwiki.org/wiki/" + tag.replace(' ', '_')
 }

-inline fun httpsUrl(builder: HttpUrl.Builder.() -> Unit) = HttpUrl.Builder().apply(builder).scheme("https").build()
-inline fun ehUrl(builder: HttpUrl.Builder.() -> Unit) = httpsUrl { apply(builder).host(EhUrl.domain) }
-fun HttpUrl.Builder.addQueryParameterIfNotBlank(name: String, value: String?) = apply {
-    if (!value.isNullOrBlank()) addQueryParameter(name, value)
+inline fun ehUrl(path: String?, builder: ParametersBuilder.() -> Unit) = ehUrl(
+    path = if (path.isNullOrBlank()) emptyList() else listOf(path),
+    parameters = Parameters.build(builder),
+)
+
+inline fun ehUrl(path: List<String>, builder: ParametersBuilder.() -> Unit) = ehUrl(
+    path = path,
+    parameters = Parameters.build(builder),
+)
+
+fun ehUrl(path: List<String>, parameters: Parameters = Parameters.Empty) = URLBuilder(
+    protocol = URLProtocol.HTTPS,
+    host = EhUrl.domain,
+    pathSegments = path,
+    parameters = parameters,
+)
+
+fun ParametersBuilder.addQueryParameterIfNotBlank(name: String, value: String?) = apply {
+    if (!value.isNullOrBlank()) append(name, value)
 }
+
+fun ParametersBuilder.addQueryParameter(name: String, value: String) = append(name, value)
@@ -16,12 +16,13 @@
 package com.hippo.ehviewer.client

 import android.annotation.SuppressLint
-import android.content.Context
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.ReadOnlyComposable
+import androidx.compose.runtime.Stable
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
-import com.google.android.material.R
-import com.google.android.material.color.MaterialColors
+import androidx.compose.ui.graphics.toArgb
+import arrow.core.memoize
 import com.google.android.material.color.utilities.Hct
 import com.google.android.material.color.utilities.MathUtils
 import com.hippo.ehviewer.Settings
@@ -102,17 +103,19 @@ object EhUtils {
    }

    @SuppressLint("RestrictedApi")
-    fun harmonizeWithRole(context: Context, src: Int): Int {
-        val primary = MaterialColors.getColor(context, R.attr.colorPrimaryContainer, "EhUtils")
+    val harmonizeWithRole = { primaryContainer: Int, src: Int ->
        val fromHct = Hct.fromInt(src)
-        val toHct = Hct.fromInt(primary)
+        val toHct = Hct.fromInt(primaryContainer)
        val differenceDegrees = MathUtils.differenceDegrees(fromHct.hue, toHct.hue)
        val rotationDegrees = minOf(differenceDegrees * 0.5, 15.0)
        val outputHue = MathUtils.sanitizeDegreesDouble(fromHct.hue + rotationDegrees * MathUtils.rotationDirection(fromHct.hue, toHct.hue))
-        return Hct.from(outputHue, toHct.chroma, toHct.tone).toInt()
-    }
+        Hct.from(outputHue, toHct.chroma, toHct.tone).toInt()
+    }.memoize()

-    private fun getCategoryColor(context: Context, category: Int): Int {
+    @Stable
+    @ReadOnlyComposable
+    @Composable
+    fun getCategoryColor(category: Int): Color {
        val primary = when (category) {
            DOUJINSHI -> BG_COLOR_DOUJINSHI
            MANGA -> BG_COLOR_MANGA
@@ -126,16 +129,15 @@ object EhUtils {
            MISC -> BG_COLOR_MISC
            else -> BG_COLOR_UNKNOWN
        }.toInt()
-        return if (Settings.harmonizeCategoryColor) {
-            harmonizeWithRole(context, primary)
+        val color = if (Settings.harmonizeCategoryColor) {
+            val primaryContainer = MaterialTheme.colorScheme.primaryContainer.toArgb()
+            harmonizeWithRole(primaryContainer, primary)
        } else {
            primary
        }
+        return Color(color)
    }

-    @Composable
-    fun getCategoryColor(category: Int) = Color(getCategoryColor(LocalContext.current, category))
-
    val categoryTextColor = Color(0xffe6e0e9)

    fun signOut() {
@@ -146,10 +148,6 @@ object EhUtils {
        Settings.needSignIn = true
    }

-    fun needSignedIn(): Boolean {
-        return Settings.needSignIn
-    }
-
    fun getSuitableTitle(gi: GalleryInfo): String {
        return if (Settings.showJpnTitle) {
            if (gi.titleJpn.isNullOrEmpty()) gi.title else gi.titleJpn
@@ -22,8 +22,10 @@ import androidx.room.Ignore
 import androidx.room.PrimaryKey
 import com.hippo.ehviewer.client.data.GalleryInfo.Companion.NOT_FAVORITED
 import kotlinx.parcelize.Parcelize
+import kotlinx.serialization.Serializable

@Parcelize
+@Serializable
@Entity(tableName = "GALLERIES")
 data class BaseGalleryInfo(
    @PrimaryKey
@@ -17,41 +17,38 @@ package com.hippo.ehviewer.client.data

 import android.os.Parcelable
 import com.hippo.ehviewer.client.EhUrl
+import com.hippo.ehviewer.client.addQueryParameter
 import com.hippo.ehviewer.client.addQueryParameterIfNotBlank
 import com.hippo.ehviewer.client.ehUrl
 import kotlinx.parcelize.Parcelize

@Parcelize
-class FavListUrlBuilder(
-    var mPrev: String? = null,
-    var mNext: String? = null,
+data class FavListUrlBuilder(
+    val favCat: Int = FAV_CAT_ALL,
+    val keyword: String? = null,
    var jumpTo: String? = null,
-    var keyword: String? = null,
-    var favCat: Int = FAV_CAT_ALL,
+    var prev: String? = null,
+    var next: String? = null,
 ) : Parcelable {
    fun setIndex(index: String?, isNext: Boolean) {
-        mNext = index.takeIf { isNext }
-        mPrev = index.takeUnless { isNext }
+        next = index.takeIf { isNext }
+        prev = index.takeUnless { isNext }
    }

-    fun build() = ehUrl {
-        addPathSegment(EhUrl.FAV_PATH)
-        if (isValidFavCat(favCat)) {
-            addQueryParameter("favcat", "$favCat")
-        } else if (favCat == FAV_CAT_ALL) {
-            addQueryParameter("favcat", "all")
+    fun build() = ehUrl(EhUrl.FAV_PATH) {
+        when {
+            isValidFavCat(favCat) -> addQueryParameter("favcat", "$favCat")
+            favCat == FAV_CAT_ALL -> addQueryParameter("favcat", "all")
        }
        addQueryParameterIfNotBlank("f_search", keyword)
-        addQueryParameterIfNotBlank("prev", mPrev)
-        addQueryParameterIfNotBlank("next", mNext)
+        addQueryParameterIfNotBlank("prev", prev)
+        addQueryParameterIfNotBlank("next", next)
        addQueryParameterIfNotBlank("seek", jumpTo)
-    }.toString()
+    }.buildString()

    companion object {
        const val FAV_CAT_ALL = -1
        const val FAV_CAT_LOCAL = -2
-        fun isValidFavCat(favCat: Int): Boolean {
-            return favCat in 0..9
-        }
+        fun isValidFavCat(favCat: Int) = favCat in 0..9
    }
 }
@@ -1,38 +0,0 @@
-/*
- * Copyright 2016 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.hippo.ehviewer.client.data
-
-import android.os.Parcelable
-import kotlinx.parcelize.Parcelize
-
-@Parcelize
-class GalleryApiInfo(
-    var gid: Long = 0,
-    var token: String? = null,
-    var archiverKey: String? = null,
-    var title: String? = null,
-    var titleJpn: String? = null,
-    var category: Int = 0,
-    var thumb: String? = null,
-    var uploader: String? = null,
-    var posted: Long = 0,
-    var filecount: Int = 0,
-    var filesize: Long = 0,
-    var expunged: Boolean = false,
-    var rating: Float = 0f,
-    var torrentcount: Int = 0,
-    var tags: Array<String>?,
-) : Parcelable
@@ -19,19 +19,18 @@ import android.os.Parcelable
 import kotlinx.parcelize.Parcelize

@Parcelize
-class GalleryComment(
-    // 0 for uploader comment. can't vote
-    var id: Long = 0,
-    var score: Int = 0,
-    var editable: Boolean = false,
-    var voteUpAble: Boolean = false,
-    var voteUpEd: Boolean = false,
-    var voteDownAble: Boolean = false,
-    var voteDownEd: Boolean = false,
-    var uploader: Boolean = false,
-    var voteState: String? = null,
-    var time: Long = 0,
-    var user: String? = null,
-    var comment: String? = null,
-    var lastEdited: Long = 0,
+data class GalleryComment(
+    val id: Long,
+    val score: Int,
+    val editable: Boolean,
+    val voteUpAble: Boolean,
+    val voteUpEd: Boolean,
+    val voteDownAble: Boolean,
+    val voteDownEd: Boolean,
+    val uploader: Boolean,
+    val voteState: String?,
+    val time: Long,
+    val user: String?,
+    val comment: String,
+    val lastEdited: Long,
 ) : Parcelable
@@ -19,7 +19,7 @@ import android.os.Parcelable
 import kotlinx.parcelize.Parcelize

@Parcelize
-class GalleryCommentList(
-    var comments: Array<GalleryComment>,
+data class GalleryCommentList(
+    val comments: List<GalleryComment>,
    val hasMore: Boolean,
 ) : Parcelable
@@ -37,7 +37,7 @@ private val LANGUAGES = arrayOf(
 )

@Parcelize
-class GalleryDetail(
+data class GalleryDetail(
    val galleryInfo: BaseGalleryInfo = BaseGalleryInfo(),
    var apiUid: Long = -1L,
    var apiKey: String? = null,
@@ -51,7 +51,7 @@ class GalleryDetail(
    var size: String? = null,
    var favoriteCount: Int = 0,
    var ratingCount: Int = 0,
-    val tags: Array<GalleryTagGroup>,
+    val tags: List<GalleryTagGroup>,
    var comments: GalleryCommentList,
    val previewPages: Int,
    val previewList: List<GalleryPreview>,
@@ -16,6 +16,7 @@
 package com.hippo.ehviewer.client.data

 import java.util.regex.Pattern
+import moe.tarsin.kt.unreachable

 interface GalleryInfo {
    var gid: Long
@@ -43,63 +44,24 @@ interface GalleryInfo {
            ?: title?.let { generateSLangFromTitle(it) }
    }

-    private fun generateSLangFromTags(simpleTags: List<String>): String? {
-        for (tag in simpleTags) {
-            for (i in S_LANGS.indices) {
-                if (S_LANG_TAGS[i] == tag) {
-                    return S_LANGS[i]
-                }
-            }
-        }
-        return null
-    }
-
-    private fun generateSLangFromTitle(title: String): String? {
-        for (i in S_LANGS.indices) {
-            if (S_LANG_PATTERNS[i].matcher(title).find()) {
-                return S_LANGS[i]
-            }
-        }
-        return null
-    }
-
    companion object {
-        /**
-         * ISO 639-1
-         */
-        const val S_LANG_JA = "JA"
-        const val S_LANG_EN = "EN"
-        const val S_LANG_ZH = "ZH"
-        const val S_LANG_NL = "NL"
-        const val S_LANG_FR = "FR"
-        const val S_LANG_DE = "DE"
-        const val S_LANG_HU = "HU"
-        const val S_LANG_IT = "IT"
-        const val S_LANG_KO = "KO"
-        const val S_LANG_PL = "PL"
-        const val S_LANG_PT = "PT"
-        const val S_LANG_RU = "RU"
-        const val S_LANG_ES = "ES"
-        const val S_LANG_TH = "TH"
-        const val S_LANG_VI = "VI"
-
        val S_LANGS = arrayOf(
-            S_LANG_EN,
-            S_LANG_ZH,
-            S_LANG_ES,
-            S_LANG_KO,
-            S_LANG_RU,
-            S_LANG_FR,
-            S_LANG_PT,
-            S_LANG_TH,
-            S_LANG_DE,
-            S_LANG_IT,
-            S_LANG_VI,
-            S_LANG_PL,
-            S_LANG_HU,
-            S_LANG_NL,
+            "EN",
+            "ZH",
+            "ES",
+            "KO",
+            "RU",
+            "FR",
+            "PT",
+            "TH",
+            "DE",
+            "IT",
+            "VI",
+            "PL",
+            "HU",
+            "NL",
        )
-        val S_LANG_PATTERNS = arrayOf(
+        private val S_LANG_PATTERNS = arrayOf(
            Pattern.compile(
                "[(\\[]eng(?:lish)?[)\\]]|英訳",
                Pattern.CASE_INSENSITIVE,
@@ -148,7 +110,39 @@ interface GalleryInfo {
            "language:dutch",
        )

+        private fun generateSLangFromTags(simpleTags: List<String>): String? {
+            for (tag in simpleTags) {
+                for (i in S_LANGS.indices) {
+                    if (S_LANG_TAGS[i] == tag) {
+                        return S_LANGS[i]
+                    }
+                }
+            }
+            return null
+        }
+
+        private fun generateSLangFromTitle(title: String): String? {
+            for (i in S_LANGS.indices) {
+                if (S_LANG_PATTERNS[i].matcher(title).find()) {
+                    return S_LANGS[i]
+                }
+            }
+            return null
+        }
+
        const val NOT_FAVORITED = -2
        const val LOCAL_FAVORITED = -1
    }
 }
+
+fun GalleryInfo.findBaseInfo(): BaseGalleryInfo {
+    return when (this) {
+        is BaseGalleryInfo -> this
+        is GalleryDetail -> galleryInfo
+        else -> unreachable()
+    }
+}
+
+fun GalleryInfo.asGalleryDetail(): GalleryDetail? {
+    return this as? GalleryDetail
+}
@@ -19,7 +19,7 @@ import android.os.Parcelable
 import kotlinx.parcelize.Parcelize

@Parcelize
-class GalleryTagGroup(
+data class GalleryTagGroup(
    val groupName: String,
-    private val mTagList: MutableList<String> = mutableListOf(),
-) : Parcelable, MutableList<String> by mTagList
+    private val tagList: MutableList<String> = mutableListOf(),
+) : Parcelable, MutableList<String> by tagList
@@ -17,8 +17,10 @@ package com.hippo.ehviewer.client.data

 import android.os.Parcelable
 import androidx.annotation.IntDef
+import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.EhUrl
 import com.hippo.ehviewer.client.EhUtils
+import com.hippo.ehviewer.client.addQueryParameter
 import com.hippo.ehviewer.client.addQueryParameterIfNotBlank
 import com.hippo.ehviewer.client.ehUrl
 import com.hippo.ehviewer.dao.QuickSearch
@@ -35,6 +37,7 @@ data class ListUrlBuilder(
    var mode: Int = MODE_NORMAL,
    private var mPrev: String? = null,
    var mNext: String? = null,
+    // Reset to null after initial loading
    var mJumpTo: String? = null,
    var category: Int = EhUtils.NONE,
    private var mKeyword: String? = null,
@@ -48,23 +51,6 @@ data class ListUrlBuilder(
    var isOnlySearchCovers: Boolean = false,
 ) : Parcelable {

-    fun reset() {
-        mode = MODE_NORMAL
-        mPrev = null
-        mNext = null
-        mJumpTo = null
-        this.category = EhUtils.NONE
-        mKeyword = null
-        advanceSearch = -1
-        minRating = -1
-        pageFrom = -1
-        pageTo = -1
-        imagePath = null
-        isUseSimilarityScan = false
-        isOnlySearchCovers = false
-        hash = null
-    }
-
    fun setIndex(index: String?, isNext: Boolean = true) {
        mNext = index?.takeIf { isNext }
        mPrev = index?.takeUnless { isNext }
@@ -80,8 +66,7 @@ data class ListUrlBuilder(
            mKeyword = keyword
        }

-    fun set(q: QuickSearch) {
-        reset()
+    constructor(q: QuickSearch) : this() {
        mode = q.mode
        this.category = q.category
        mKeyword = q.keyword
@@ -134,9 +119,8 @@ data class ListUrlBuilder(
    /**
     * @param query xxx=yyy&mmm=nnn
     */
-    fun setQuery(query: String?) {
+    constructor(query: String?) : this() {
        // TODO page
-        reset()
        if (query.isNullOrEmpty()) {
            return
        }
@@ -271,31 +255,23 @@ data class ListUrlBuilder(

    fun build(): String {
        return when (mode) {
-            MODE_NORMAL, MODE_SUBSCRIPTION -> ehUrl {
-                if (mode == MODE_SUBSCRIPTION) addPathSegment(EhUrl.WATCHED_PATH)
-                if (category != EhUtils.NONE) {
-                    addEncodedQueryParameter("f_cats", (category.inv() and EhUtils.ALL_CATEGORY).toString())
+            MODE_NORMAL, MODE_SUBSCRIPTION -> ehUrl(EhUrl.WATCHED_PATH.takeIf { mode == MODE_SUBSCRIPTION }) {
+                if (category > 0) {
+                    addQueryParameter("f_cats", (category.inv() and EhUtils.ALL_CATEGORY).toString())
                }
+                val query = mKeyword?.let {
+                    val index = Settings.languageFilter.value
+                    GalleryInfo.S_LANG_TAGS.getOrNull(index)?.let { lang ->
+                        "$it $lang"
+                    } ?: it
+                }
+                addQueryParameterIfNotBlank("f_search", query)
                addQueryParameterIfNotBlank("f_shash", hash)
                addQueryParameterIfNotBlank("prev", mPrev)
                addQueryParameterIfNotBlank("next", mNext)
                addQueryParameterIfNotBlank("seek", mJumpTo)
-                // Search key
-                // the settings of ub:UrlBuilder may be overwritten by following Advance search
-                mKeyword?.split('|')?.forEachIndexed { idx, kwd ->
-                    val keyword = kwd.trim { it <= ' ' }
-                    when (idx) {
-                        0 -> addQueryParameterIfNotBlank("f_search", keyword)
-
-                        else -> keyword.indexOf(':').takeIf { it >= 0 }?.run {
-                            val key = keyword.substring(0, this).trim { it <= ' ' }
-                            val value = keyword.substring(this + 1).trim { it <= ' ' }
-                            addQueryParameterIfNotBlank(key, value)
-                        }
-                    }
-                }
                // Advance search
-                if (advanceSearch != -1) {
+                if (advanceSearch > 0 || minRating > 0 || pageFrom > 0 || pageTo > 0) {
                    addQueryParameter("advsearch", "1")
                    if (advanceSearch and AdvanceTable.SH != 0) {
                        addQueryParameter("f_sh", "on")
@@ -313,20 +289,20 @@ data class ListUrlBuilder(
                        addQueryParameter("f_sft", "on")
                    }
                    // Set min star
-                    if (minRating != -1) {
+                    if (minRating > 0) {
                        addQueryParameter("f_sr", "on")
                        addQueryParameter("f_srdd", "$minRating")
                    }
                    // Pages
-                    if (pageFrom != -1 || pageTo != -1) {
+                    if (pageFrom > 0 || pageTo > 0) {
                        addQueryParameter("f_sp", "on")
                        addQueryParameterIfNotBlank(
                            "f_spf",
-                            pageFrom.takeUnless { it == -1 }?.toString(),
+                            pageFrom.takeIf { it > 0 }?.toString(),
                        )
                        addQueryParameterIfNotBlank(
                            "f_spt",
-                            pageTo.takeUnless { it == -1 }?.toString(),
+                            pageTo.takeIf { it > 0 }?.toString(),
                        )
                    }
                }
@@ -374,9 +350,7 @@ data class ListUrlBuilder(
                buildString {
                    append(EhUrl.HOST_E)
                    append("toplist.php?tl=")
-                    mKeyword.orEmpty().let {
-                        append(encodeUTF8(it))
-                    }
+                    append(mKeyword!!)
                    mJumpTo?.let {
                        append("&p=").append(it)
                    }
@@ -1,5 +0,0 @@
-package com.hippo.ehviewer.client.exception
-
-import com.hippo.ehviewer.R
-
-class CloudflareBypassException : EhException(R.string.cloudflare_bypass_failed)
@@ -0,0 +1,13 @@
+package com.hippo.ehviewer.client.parser
+
+import io.ktor.util.moveToByteArray
+import java.nio.ByteBuffer
+import kotlinx.serialization.cbor.Cbor
+import kotlinx.serialization.decodeFromByteArray
+
+inline fun <reified T> unmarshalParsingAs(body: ByteBuffer, parser: (ByteBuffer, Int) -> Int): T {
+    val cborBytes = parser(body, body.limit())
+    body.limit(cborBytes)
+    val array = body.moveToByteArray()
+    return Cbor.decodeFromByteArray<T>(array)
+}
@@ -1,32 +1,29 @@
 package com.hippo.ehviewer.client.parser

-import com.hippo.ehviewer.client.exception.NotLoggedInException
 import com.hippo.ehviewer.client.exception.ParseException
+import java.nio.ByteBuffer
+import kotlinx.serialization.Serializable
+import moe.tarsin.coroutines.runSuspendCatching
+
+@Serializable
+data class FavParserResult(
+    val catArray: List<String>,
+    val countArray: List<Int>,
+    val galleryListResult: GalleryListResult,
+) {
+    val prev = galleryListResult.prev
+    val next = galleryListResult.next
+    val galleryInfoList = galleryListResult.galleryInfoList
+}

 object FavoritesParser {
-    suspend fun parse(body: String): Result {
-        if (body.contains("This page requires you to log on.</p>")) {
-            throw NotLoggedInException()
-        }
-        val catArray = arrayOfNulls<String>(10)
-        val countArray = runCatching {
-            parseFav(body, catArray).also { check(it.isNotEmpty()) }
+    fun parse(body: ByteBuffer): FavParserResult {
+        return runSuspendCatching {
+            unmarshalParsingAs<FavParserResult>(body, ::parseFav)
        }.getOrElse {
            throw ParseException("Parse favorites error", it)
        }
-        val result = GalleryListParser.parse(body)
-        return Result(catArray.requireNoNulls(), countArray, result)
-    }
-
-    class Result(
-        val catArray: Array<String>,
-        val countArray: IntArray,
-        galleryListResult: GalleryListResult,
-    ) {
-        val prev = galleryListResult.prev
-        val next = galleryListResult.next
-        val galleryInfoList = galleryListResult.galleryInfoList
    }
 }

-private external fun parseFav(body: String, favCat: Array<String?>): IntArray
+private external fun parseFav(body: ByteBuffer, limit: Int = body.limit()): Int
@@ -33,7 +33,7 @@ object GalleryApiParser {
                titleJpn = item.titleJpn.unescapeXml()
                category = getCategory(item.category)
                thumbKey = getThumbKey(handleThumbUrlResolution(item.thumb)!!)
-                uploader = item.uploader.unescapeXml()
+                uploader = item.uploader?.unescapeXml()
                posted = ParserUtils.formatDate(item.posted * 1000)
                rating = item.rating
                simpleTags = item.tags
@@ -54,7 +54,8 @@ object GalleryApiParser {
        val titleJpn: String,
        val category: String,
        val thumb: String,
-        val uploader: String,
+        // Null in some old galleries
+        val uploader: String?,
        val posted: Long,
        @SerialName("filecount")
        val pages: Int,
@@ -17,6 +17,7 @@ package com.hippo.ehviewer.client.parser

 import arrow.core.unzip
 import com.hippo.ehviewer.EhDB
+import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.EhFilter
 import com.hippo.ehviewer.client.EhUtils
 import com.hippo.ehviewer.client.EhUtils.getCategory
@@ -75,8 +76,7 @@ object GalleryDetailParser {
    private val PATTERN_NEWER_DATE = Regex(", added (.+?)<br />")
    private val PATTERN_FAVORITE_SLOT =
        Regex("/fav.png\\); background-position:0px -(\\d+)px")
-    private val EMPTY_GALLERY_TAG_GROUP_ARRAY = arrayOf<GalleryTagGroup>()
-    private val EMPTY_GALLERY_COMMENT_ARRAY = GalleryCommentList(arrayOf(), false)
+    private val EMPTY_GALLERY_COMMENT_LIST = GalleryCommentList(emptyList(), false)
    private val WEB_COMMENT_DATE_FORMAT = DateTimeFormatter
        .ofPattern("dd MMMM yyyy, HH:mm", Locale.US).withZone(ZoneOffset.UTC)
    private const val OFFENSIVE_STRING =
@@ -93,8 +93,7 @@ object GalleryDetailParser {

        // Error info
        PATTERN_ERROR.find(body)?.run { throw EhException(groupValues[1]) }
-        // Temporary workaround, see https://github.com/jhy/jsoup/issues/1850
-        val document = Jsoup.parse(body.replace("del>", "s>"))
+        val document = Jsoup.parse(body)
        val galleryDetail = GalleryDetail(
            tags = parseTagGroups(document),
            comments = parseComments(document),
@@ -307,7 +306,7 @@ object GalleryDetailParser {
    /**
     * Parse tag groups with html parser
     */
-    private fun parseTagGroups(document: Document): Array<GalleryTagGroup> {
+    private fun parseTagGroups(document: Document): List<GalleryTagGroup> {
        return try {
            val taglist = document.getElementById("taglist")!!
            val tagGroups = taglist.child(0).child(0).children()
@@ -315,73 +314,69 @@ object GalleryDetailParser {
        } catch (e: Throwable) {
            ExceptionUtils.throwIfFatal(e)
            e.printStackTrace()
-            EMPTY_GALLERY_TAG_GROUP_ARRAY
+            emptyList()
        }
    }

-    private fun parseTagGroups(trs: Elements): Array<GalleryTagGroup> {
+    private fun parseTagGroups(trs: Elements): List<GalleryTagGroup> {
        return try {
-            trs.mapNotNull { parseTagGroup(it) }.toTypedArray()
+            trs.mapNotNull { parseTagGroup(it) }
        } catch (e: Throwable) {
            ExceptionUtils.throwIfFatal(e)
            e.printStackTrace()
-            EMPTY_GALLERY_TAG_GROUP_ARRAY
+            emptyList()
        }
    }

    private suspend fun parseComment(element: Element): GalleryComment? {
        return try {
-            val comment = GalleryComment()
            // Id
            val a = element.previousElementSibling()
            val name = a!!.attr("name")
-            comment.id = name trimAnd { substring(1).toInt().toLong() }
+            val id = name trimAnd { substring(1).toInt().toLong() }
            // Editable, vote up and vote down
            val c4 = element.getElementsByClass("c4").first()
+            var voteUpAble = false
+            var voteUpEd = false
+            var voteDownAble = false
+            var voteDownEd = false
+            var editable = false
+            var uploader = false
            if (null != c4) {
                if ("Uploader Comment" == c4.text()) {
-                    comment.uploader = true
+                    uploader = true
                }
                for (e in c4.children()) {
                    when (e.text()) {
                        "Vote+" -> {
-                            comment.voteUpAble = true
-                            comment.voteUpEd = e.attr("style").trim().isNotEmpty()
+                            voteUpAble = true
+                            voteUpEd = e.attr("style").trim().isNotEmpty()
                        }

                        "Vote-" -> {
-                            comment.voteDownAble = true
-                            comment.voteDownEd = e.attr("style").trim().isNotEmpty()
+                            voteDownAble = true
+                            voteDownEd = e.attr("style").trim().isNotEmpty()
                        }

-                        "Edit" -> comment.editable = true
+                        "Edit" -> editable = true
                    }
                }
            }
            // Vote state
            val c7 = element.getElementsByClass("c7").first()
-            if (null != c7) {
-                comment.voteState = c7.text().trim()
-            }
+            val voteState = c7?.text()?.trim()
            // Score
            val c5 = element.getElementsByClass("c5").first()
-            if (null != c5) {
-                val es = c5.children()
-                if (!es.isEmpty()) {
-                    comment.score = es[0].text().trim().toIntOrDefault(0)
-                }
-            }
+            val score = c5?.children()?.first()?.text()?.trim()?.toIntOrDefault(0) ?: 0
            // time
            val c3 = element.getElementsByClass("c3").first()
            val temp = c3!!.ownText()
-            val time = if (temp.endsWith(':')) {
-                // user
-                comment.user = c3.child(0).text()
-                temp.substring("Posted on ".length, temp.length - " by:".length)
+            val (timeStr, user) = if (temp.endsWith(':')) {
+                temp.substring("Posted on ".length, temp.length - " by:".length) to c3.child(0).text()
            } else {
-                temp.substring("Posted on ".length)
+                temp.substring("Posted on ".length) to null
            }
-            comment.time = Instant.from(WEB_COMMENT_DATE_FORMAT.parse(time)).toEpochMilli()
+            val time = Instant.from(WEB_COMMENT_DATE_FORMAT.parse(timeStr)).toEpochMilli()
            // comment
            val c6 = element.getElementsByClass("c6").first()
            // fix underline support
@@ -390,24 +385,21 @@ object GalleryDetailParser {
                    e.tagName("u")
                }
            }
-            comment.comment = c6.html()
+            val commentHtml = c6.html()
            // filter comment
-            if (!comment.uploader) {
+            if (!uploader) {
                val sEhFilter = EhFilter
-                if (sEhFilter.filterCommenter(comment.user!!) || sEhFilter.filterComment(comment.comment!!)) {
+                if (score <= Settings.commentThreshold || sEhFilter.filterCommenter(user.orEmpty()) || sEhFilter.filterComment(commentHtml)) {
                    return null
                }
            }
            // last edited
            val c8 = element.getElementsByClass("c8").first()
-            if (c8 != null) {
-                val e = c8.children().first()
-                if (e != null) {
-                    comment.lastEdited =
-                        Instant.from(WEB_COMMENT_DATE_FORMAT.parse(e.text())).toEpochMilli()
-                }
-            }
-            comment
+            val lastEdited = c8?.children()?.first()?.run { Instant.from(WEB_COMMENT_DATE_FORMAT.parse(text())).toEpochMilli() } ?: 0
+            GalleryComment(
+                id, score, editable, voteUpAble, voteUpEd, voteDownAble,
+                voteDownEd, uploader, voteState, time, user, commentHtml, lastEdited,
+            )
        } catch (e: Throwable) {
            ExceptionUtils.throwIfFatal(e)
            e.printStackTrace()
@@ -419,6 +411,8 @@ object GalleryDetailParser {
     * Parse comments with html parser
     */
    suspend fun parseComments(document: Document): GalleryCommentList {
+        // Disable pretty print to get comments in raw html
+        document.outputSettings().prettyPrint(false)
        return try {
            val cdiv = document.getElementById("cdiv")!!
            val c1s = cdiv.getElementsByClass("c1")
@@ -437,11 +431,11 @@ object GalleryDetailParser {
                },
                chd!!,
            )
-            GalleryCommentList(list.toTypedArray(), hasMore)
+            GalleryCommentList(list, hasMore)
        } catch (e: Throwable) {
            ExceptionUtils.throwIfFatal(e)
            e.printStackTrace()
-            EMPTY_GALLERY_COMMENT_ARRAY
+            EMPTY_GALLERY_COMMENT_LIST
        }
    }

@@ -1,40 +1,36 @@
 package com.hippo.ehviewer.client.parser

 import com.hippo.ehviewer.EhDB
-import com.hippo.ehviewer.R
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
 import com.hippo.ehviewer.client.data.GalleryInfo.Companion.LOCAL_FAVORITED
 import com.hippo.ehviewer.client.data.GalleryInfo.Companion.NOT_FAVORITED
-import com.hippo.ehviewer.client.exception.EhException
 import com.hippo.ehviewer.client.exception.ParseException
+import java.nio.ByteBuffer
+import kotlinx.serialization.Serializable
+import moe.tarsin.coroutines.runSuspendCatching

 object GalleryListParser {
-    suspend fun parse(body: String) = runCatching {
-        parseGalleryInfoList(body).apply {
-            galleryInfoList.onEach {
-                if (it.favoriteSlot == NOT_FAVORITED && EhDB.containLocalFavorites(it.gid)) {
-                    it.favoriteSlot = LOCAL_FAVORITED
-                }
-                it.generateSLang()
-            }
-        }
+    suspend fun parse(body: ByteBuffer) = runSuspendCatching {
+        unmarshalParsingAs<GalleryListResult>(body, ::parseGalleryInfoList)
    }.getOrElse {
-        if (body.contains("<p>You do not have any watched tags")) {
-            throw EhException(R.string.gallery_list_empty_hit_subscription)
-        }
-        if (body.contains("No hits found</p>")) {
-            throw EhException(R.string.gallery_list_empty_hit)
-        }
        throw ParseException("Can't parse gallery list", it)
+    }.apply {
+        galleryInfoList.onEach {
+            if (it.favoriteSlot == NOT_FAVORITED && EhDB.containLocalFavorites(it.gid)) {
+                it.favoriteSlot = LOCAL_FAVORITED
+            }
+            it.generateSLang()
+        }
    }

    val emptyResult = GalleryListResult(null, null, arrayListOf())
 }

-class GalleryListResult(
+@Serializable
+data class GalleryListResult(
    val prev: String?,
    val next: String?,
    val galleryInfoList: ArrayList<BaseGalleryInfo>,
 )

-private external fun parseGalleryInfoList(e: String): GalleryListResult
+private external fun parseGalleryInfoList(body: ByteBuffer, size: Int = body.limit()): Int
@@ -42,9 +42,7 @@ object GalleryListUrlParser {
        }
        val path = url.path ?: return null
        return if (PATH_NORMAL == path || path.isEmpty()) {
-            val builder = ListUrlBuilder()
-            builder.setQuery(url.query)
-            builder
+            ListUrlBuilder(url.query)
        } else if (path.startsWith(PATH_UPLOADER)) {
            parseUploader(path)
        } else if (path.startsWith(PATH_TAG)) {
@@ -57,10 +55,7 @@ object GalleryListUrlParser {
            } catch (e: NumberFormatException) {
                return null
            }
-            val builder = ListUrlBuilder()
-            builder.setQuery(url.query)
-            builder.category = category
-            builder
+            ListUrlBuilder(url.query).also { it.category = category }
        } else {
            null
        }
@@ -1,58 +0,0 @@
-/*
- * Copyright 2019 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.hippo.ehviewer.client.parser
-
-import com.hippo.ehviewer.client.exception.ParseException
-import com.hippo.ehviewer.client.parseAs
-import com.hippo.ehviewer.util.unescapeXml
-import kotlinx.serialization.SerialName
-import kotlinx.serialization.Serializable
-
-object GalleryPageApiParser {
-    private val PATTERN_IMAGE_URL = Regex("<img[^>]*src=\"([^\"]+)\" style")
-    private val PATTERN_SKIP_HATH_KEY = Regex("onclick=\"return nl\\('([^)]+)'\\)")
-    private val PATTERN_ORIGIN_IMAGE_URL = Regex("<a href=\"([^\"]+)fullimg.php([^\"]+)\">")
-
-    fun parse(body: String) = runCatching {
-        val res = body.parseAs<JsonResult>()
-        val imageUrl = PATTERN_IMAGE_URL.find(res.imageUrl)?.run {
-            groupValues[1].trim().unescapeXml()
-        }
-        val skipHathKey = PATTERN_SKIP_HATH_KEY.find(res.skipHathKey)?.run {
-            groupValues[1].trim().unescapeXml()
-        }
-        val originImageUrl = PATTERN_ORIGIN_IMAGE_URL.find(res.originImageUrl)?.run {
-            groupValues[1].unescapeXml() + "fullimg.php" + groupValues[2].unescapeXml()
-        }
-        check(!imageUrl.isNullOrEmpty())
-        Result(imageUrl, skipHathKey, originImageUrl)
-    }.getOrElse { e ->
-        runCatching { body.parseAs<Error>() }.onSuccess { throw ParseException(it.error) }
-        throw ParseException("Parse image url and skip hath key error", e)
-    }
-
-    @Serializable
-    private data class JsonResult(
-        @SerialName("i3")
-        val imageUrl: String,
-        @SerialName("i6")
-        val skipHathKey: String,
-        @SerialName("i7")
-        val originImageUrl: String,
-    )
-
-    class Result(val imageUrl: String, val skipHathKey: String?, val originImageUrl: String?)
-}
@@ -17,46 +17,32 @@ package com.hippo.ehviewer.client.parser

 import com.hippo.ehviewer.client.exception.ParseException
 import com.hippo.ehviewer.util.unescapeXml
-import java.util.regex.Pattern

 object GalleryPageParser {
-    private val PATTERN_IMAGE_URL = Pattern.compile("<img[^>]*src=\"([^\"]+)\" style")
-    private val PATTERN_SKIP_HATH_KEY = Pattern.compile("onclick=\"return nl\\('([^)]+)'\\)")
-    private val PATTERN_ORIGIN_IMAGE_URL =
-        Pattern.compile("<a href=\"([^\"]+)fullimg.php([^\"]+)\">")
+    private val PATTERN_IMAGE_URL = Regex("<img[^>]*src=\"([^\"]+)\" style")
+    private val PATTERN_SKIP_HATH_KEY = Regex("onclick=\"return nl\\('([\\d-]+)'\\)")
+    private val PATTERN_ORIGIN_IMAGE_URL = Regex("<a href=\"([^\"]+/fullimg/[^\"]+)\">")

    // TODO Not sure about the size of show keys
-    private val PATTERN_SHOW_KEY = Pattern.compile("var showkey=\"([0-9a-z]+)\";")
+    private val PATTERN_SHOW_KEY = Regex("var showkey=\"([0-9a-z]+)\";")

    fun parse(body: String): Result {
-        var m = PATTERN_IMAGE_URL.matcher(body)
-        val imageUrl = if (m.find()) {
-            m.group(1)!!.trim().unescapeXml()
-        } else {
-            null
+        val imageUrl = PATTERN_IMAGE_URL.find(body)?.run {
+            groupValues[1].unescapeXml()
        }
-        m = PATTERN_SKIP_HATH_KEY.matcher(body)
-        val skipHathKey = if (m.find()) {
-            m.group(1)!!.trim().unescapeXml()
-        } else {
-            null
+        val skipHathKey = PATTERN_SKIP_HATH_KEY.find(body)?.run {
+            groupValues[1]
        }
-        m = PATTERN_ORIGIN_IMAGE_URL.matcher(body)
-        val originImageUrl = if (m.find()) {
-            m.group(1)!!.unescapeXml() + "fullimg.php" + m.group(2)!!.unescapeXml()
-        } else {
-            null
+        val originImageUrl = PATTERN_ORIGIN_IMAGE_URL.find(body)?.run {
+            groupValues[1].unescapeXml()
        }
-        m = PATTERN_SHOW_KEY.matcher(body)
-        val showKey = if (m.find()) {
-            m.group(1)
-        } else {
-            null
+        val showKey = PATTERN_SHOW_KEY.find(body)?.run {
+            groupValues[1]
        }
-        return if (!imageUrl.isNullOrEmpty() && !showKey.isNullOrEmpty()) {
+        return if (!imageUrl.isNullOrEmpty()) {
            Result(imageUrl, skipHathKey, originImageUrl, showKey)
        } else {
-            throw ParseException("Parse image url and show error")
+            throw ParseException("Parse image url error")
        }
    }

@@ -64,6 +50,6 @@ object GalleryPageParser {
        val imageUrl: String,
        val skipHathKey: String?,
        val originImageUrl: String?,
-        val showKey: String,
+        val showKey: String?,
    )
 }
@@ -5,13 +5,14 @@ import com.hippo.ehviewer.client.exception.InsufficientFundsException
 import com.hippo.ehviewer.client.exception.ParseException
 import java.nio.ByteBuffer
 import kotlinx.parcelize.Parcelize
+import kotlinx.serialization.Serializable

 object HomeParser {
    private val PATTERN_FUNDS = Regex("Available: ([\\d,]+) Credits.*Available: ([\\d,]+) kGP", RegexOption.DOT_MATCHES_ALL)
    private const val INSUFFICIENT_FUNDS = "Insufficient funds."

    fun parse(body: ByteBuffer) = runCatching {
-        parseLimit(body)
+        unmarshalParsingAs<Limits>(body, ::parseLimit)
    }.getOrElse { throw ParseException("Parse image limits error", it) }

    fun parseResetLimits(body: String) {
@@ -35,6 +36,7 @@ object HomeParser {
 }

@Parcelize
+@Serializable
 data class Limits(val current: Int, val maximum: Int, val resetCost: Int) : Parcelable

-private external fun parseLimit(body: ByteBuffer, limit: Int = body.limit()): Limits
+private external fun parseLimit(body: ByteBuffer, limit: Int = body.limit()): Int
@@ -31,7 +31,7 @@ object ProfileParser {
            val avatar = runCatching {
                val avatar =
                    profilename.nextElementSibling()!!.nextElementSibling()!!.child(0).attr("src")
-                if (avatar.isNullOrEmpty()) {
+                if (avatar.isEmpty()) {
                    null
                } else if (!avatar.startsWith("http")) {
                    EhUrl.URL_FORUMS + avatar
@@ -2,14 +2,18 @@ package com.hippo.ehviewer.client.parser

 import com.hippo.ehviewer.client.exception.ParseException
 import java.nio.ByteBuffer
+import kotlinx.serialization.Serializable

 object TorrentParser {
    fun parse(body: ByteBuffer) = runCatching {
-        parseTorrent(body)
-    }.getOrElse { throw ParseException("Can't parse torrent list", it) }
+        unmarshalParsingAs<TorrentResult>(body, ::parseTorrent)
+    }.getOrElse {
+        throw ParseException("Can't parse torrent list", it)
+    }
 }

-class Torrent(
+@Serializable
+data class Torrent(
    val posted: String,
    val size: String,
    val seeds: Int,
@@ -21,6 +25,6 @@ class Torrent(

 fun Torrent.format() = "[$posted] $name [$size] [↑$seeds ↓$peers ✓$downloads]"

-typealias TorrentResult = ArrayList<Torrent>
+typealias TorrentResult = List<Torrent>

-private external fun parseTorrent(body: ByteBuffer, size: Int = body.limit()): ArrayList<Torrent>
+private external fun parseTorrent(body: ByteBuffer, size: Int = body.limit()): Int
@@ -1,66 +0,0 @@
-@file:Suppress("BlockingMethodInNonBlockingContext")
-
-package com.hippo.ehviewer.coil
-
-import android.net.Uri
-import android.webkit.MimeTypeMap
-import coil.ComponentRegistry
-import coil.ImageLoader
-import coil.decode.DataSource
-import coil.decode.ImageSource
-import coil.fetch.FetchResult
-import coil.fetch.Fetcher
-import coil.fetch.SourceResult
-import coil.request.Options
-import com.hippo.ehviewer.cronet.copyToChannel
-import com.hippo.ehviewer.cronet.cronetRequest
-import com.hippo.ehviewer.cronet.execute
-import com.hippo.ehviewer.cronet.noCache
-import java.io.RandomAccessFile
-
-/**
- * A HttpUriFetcher impl use Cronet for jvmheapless IO
- * cacheHeader is never respected | recorded since thumb is immutable
- */
-class CronetHttpUriFetcher(private val data: String, private val options: Options, private val imageLoader: ImageLoader) : Fetcher {
-    override suspend fun fetch(): FetchResult {
-        val diskCacheKey = options.diskCacheKey ?: data
-        val diskCache = requireNotNull(imageLoader.diskCache)
-        val snapshot = diskCache.openSnapshot(diskCacheKey) ?: run {
-            val success = cronetRequest(data) {
-                noCache()
-            }.execute {
-                diskCache.suspendEdit(diskCacheKey) {
-                    RandomAccessFile(data.toFile(), "rw").use {
-                        copyToChannel(it.channel)
-                    }
-                }
-            }
-            check(success)
-            // diskcache snapshot MUST exist here
-            requireNotNull(diskCache.openSnapshot(diskCacheKey))
-        }
-        return SourceResult(
-            source = ImageSource(snapshot.data, diskCache.fileSystem, diskCacheKey, snapshot),
-            mimeType = getMimeType(data),
-            dataSource = DataSource.DISK,
-        )
-    }
-}
-
-fun ComponentRegistry.Builder.installCronetHttpUriFetcher() = add { data: Uri, options, loader ->
-    if (data.scheme != "http" && data.scheme != "https") return@add null
-    CronetHttpUriFetcher(data.toString(), options, loader)
-}
-
-private fun getMimeType(url: String) = MimeTypeMap.getSingleton().getMimeTypeFromUrl(url)
-
-private fun MimeTypeMap.getMimeTypeFromUrl(url: String?): String? {
-    if (url.isNullOrBlank()) return null
-    val extension = url
-        .substringBeforeLast('#') // Strip the fragment.
-        .substringBeforeLast('?') // Strip the query.
-        .substringAfterLast('/') // Get the last path segment.
-        .substringAfterLast('.', missingDelimiterValue = "") // Get the file extension.
-    return getMimeTypeFromExtension(extension)
-}
@@ -1,6 +1,6 @@
 package com.hippo.ehviewer.coil

-import coil.disk.DiskCache
+import coil3.disk.DiskCache

 inline fun DiskCache.edit(key: String, crossinline block: DiskCache.Editor.() -> Unit): Boolean {
    val editor = openEditor(key) ?: return false
@@ -0,0 +1,45 @@
+package com.hippo.ehviewer.coil
+
+import coil3.intercept.Interceptor
+import coil3.request.ErrorResult
+import coil3.request.ImageResult
+import coil3.request.SuccessResult
+import com.hippo.ehviewer.EhApplication.Companion.imageCache
+import com.hippo.ehviewer.download.downloadLocation
+import com.hippo.ehviewer.spider.DownloadInfoMagics.decodeMagicRequestOrUrl
+import com.hippo.ehviewer.util.sendTo
+import com.hippo.unifile.asUniFile
+import eu.kanade.tachiyomi.util.lang.withIOContext
+
+object DownloadThumbInterceptor : Interceptor {
+    override suspend fun intercept(chain: Interceptor.Chain): ImageResult {
+        val magicOrUrl = chain.request.data as? String
+        if (magicOrUrl != null) {
+            val (url, location) = decodeMagicRequestOrUrl(magicOrUrl)
+            if (location != null) {
+                val thumb = withIOContext { downloadLocation / location / ".thumb" }
+                if (withIOContext { thumb.isFile }) {
+                    val new = chain.request.newBuilder().data(thumb.uri.toString()).build()
+                    when (val result = chain.withRequest(new).proceed()) {
+                        is SuccessResult -> return result
+                        is ErrorResult -> withIOContext { thumb.delete() }
+                    }
+                }
+                val new = chain.request.newBuilder().data(url).build()
+                return chain.withRequest(new).proceed().also {
+                    if (it is SuccessResult) {
+                        withIOContext {
+                            if (thumb.ensureFile()) {
+                                val key = requireNotNull(chain.request.memoryCacheKey)
+                                imageCache.read(key) {
+                                    data.asUniFile() sendTo thumb
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        return chain.proceed()
+    }
+}
@@ -2,22 +2,36 @@ package com.hippo.ehviewer.coil

 import android.graphics.Color
 import android.graphics.drawable.ColorDrawable
-import coil.decode.DecodeResult
-import coil.decode.Decoder
-import coil.request.CachePolicy
-import coil.request.ImageRequest
-import coil.size.Size
+import coil3.asCoilImage
+import coil3.decode.DecodeResult
+import coil3.decode.Decoder
+import coil3.network.httpHeaders
+import coil3.request.CachePolicy
+import coil3.request.ImageRequest
+import coil3.size.Size
+import com.hippo.ehviewer.Settings
+import com.hippo.ehviewer.client.CHROME_ACCEPT
+import com.hippo.ehviewer.client.CHROME_ACCEPT_LANGUAGE
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.client.data.GalleryPreview
 import com.hippo.ehviewer.client.data.NormalGalleryPreview
-import com.hippo.ehviewer.client.thumbUrl
 import com.hippo.ehviewer.client.url
+import com.hippo.ehviewer.spider.DownloadInfoMagics.encodeMagicRequestOrUrl
+import io.ktor.http.HttpHeaders
+import io.ktor.http.headers
+
+private val header = headers {
+    append(HttpHeaders.UserAgent, Settings.userAgent)
+    append(HttpHeaders.Accept, CHROME_ACCEPT)
+    append(HttpHeaders.AcceptLanguage, CHROME_ACCEPT_LANGUAGE)
+}

 fun ImageRequest.Builder.ehUrl(info: GalleryInfo) = apply {
    val key = info.thumbKey!!
-    data(info.thumbUrl)
+    data(encodeMagicRequestOrUrl(info))
    memoryCacheKey(key)
    diskCacheKey(key)
+    httpHeaders(header)
 }

 fun ImageRequest.Builder.ehPreview(preview: GalleryPreview) = apply {
@@ -25,9 +39,11 @@ fun ImageRequest.Builder.ehPreview(preview: GalleryPreview) = apply {
    memoryCacheKey(preview.imageKey)
    diskCacheKey(preview.imageKey)
    if (preview is NormalGalleryPreview) size(Size.ORIGINAL)
+    httpHeaders(header)
 }

-private val stubResult = DecodeResult(ColorDrawable(Color.BLACK), false)
+private val stubImage = ColorDrawable(Color.BLACK).asCoilImage(true)
+private val stubResult = DecodeResult(stubImage, false)
 private val stubFactory = Decoder { stubResult }

 fun ImageRequest.Builder.justDownload() = apply {
@@ -1,7 +1,7 @@
 package com.hippo.ehviewer.coil

-import coil.intercept.Interceptor
-import coil.request.ImageResult
+import coil3.intercept.Interceptor
+import coil3.request.ImageResult
 import com.hippo.ehviewer.Settings
 import kotlin.coroutines.resume
 import kotlin.coroutines.resumeWithException
@@ -41,7 +41,7 @@ object MergeInterceptor : Interceptor {

    override suspend fun intercept(chain: Interceptor.Chain): ImageResult {
        val req = chain.request
-        val key = req.memoryCacheKey?.key?.takeIf { it.startsWith("m/") || Settings.preloadThumbAggressively } ?: return withContext(req.interceptorDispatcher) { chain.proceed(req) }
+        val key = req.memoryCacheKey?.takeIf { it.startsWith("m/") || Settings.preloadThumbAggressively } ?: return withContext(req.interceptorDispatcher) { chain.proceed() }

        suspendCancellableCoroutine { continuation ->
            synchronized(pendingContinuationMapLock) {
@@ -62,7 +62,7 @@ object MergeInterceptor : Interceptor {
        }

        try {
-            return withContext(req.interceptorDispatcher) { chain.proceed(req) }.apply {
+            return withContext(req.interceptorDispatcher) { chain.proceed() }.apply {
                // Wake all pending continuations shared with the same memory key since we have written it to memory cache
                notifyScope.launch {
                    synchronized(pendingContinuationMapLock) {
@@ -1,33 +1,11 @@
 package com.hippo.ehviewer.cronet

-import com.hippo.ehviewer.EhApplication
 import io.ktor.utils.io.pool.DirectByteBufferPool
-import io.ktor.utils.io.pool.useInstance
-import java.nio.ByteBuffer
-import java.nio.channels.FileChannel
-import kotlin.coroutines.resumeWithException
-import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.asExecutor

 val pool = DirectByteBufferPool(32)

-val cronetHttpClientExecutor = EhApplication.baseOkHttpClient.dispatcher.executorService
-
-suspend inline fun CronetRequest.awaitBodyFully(crossinline callback: (ByteBuffer) -> Unit) {
-    return pool.useInstance { buffer ->
-        suspendCancellableCoroutine { cont ->
-            consumer = {
-                callback(it)
-                buffer.clear()
-                request.read(buffer)
-            }
-            onError = { readerCont.resumeWithException(it) }
-            readerCont = cont
-            request.read(buffer)
-        }
-    }
-}
-
-suspend inline fun CronetRequest.copyToChannel(chan: FileChannel, crossinline listener: ((Int) -> Unit) = {}) = awaitBodyFully {
-    val bytes = chan.write(it)
-    listener(bytes)
-}
+// Limit thread to 1 since we are async & non-blocking
+val cronetDispatcher = Dispatchers.Default.limitedParallelism(1)
+val cronetHttpClientExecutor = cronetDispatcher.asExecutor()
@@ -25,15 +25,16 @@ import com.hippo.ehviewer.client.EhCookieStore
 import com.hippo.ehviewer.client.EhEngine
 import eu.kanade.tachiyomi.util.lang.withIOContext
 import java.time.Duration
-import java.time.Instant
-import java.time.LocalDateTime
-import java.time.temporal.ChronoUnit
 import java.util.concurrent.TimeUnit
+import kotlin.time.Duration.Companion.days
+import kotlinx.datetime.Clock
+import kotlinx.datetime.LocalDateTime
+import kotlinx.datetime.LocalTime
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.toInstant
+import kotlinx.datetime.toLocalDateTime
 import splitties.init.appCtx

-private val signedIn
-    get() = EhCookieStore.hasSignedIn()
-
 private const val CHANNEL_ID = "DailyCheckNotification"

 class DailyCheckWork(context: Context, workerParams: WorkerParameters) :
@@ -46,28 +47,20 @@ class DailyCheckWork(context: Context, workerParams: WorkerParameters) :
    }
 }

-val schedHour
-    get() = Settings.requestNewsTimerHour.takeUnless { it == -1 } ?: 0
-
-val schedMinute
-    get() = Settings.requestNewsTimerMinute.takeUnless { it == -1 } ?: 0
-
-private val whenToWork
-    get() = LocalDateTime.now()
-        .run { withHour(schedHour) }
-        .run { withMinute(schedMinute) }
-
-private val initialDelay
-    get() = Duration.between(LocalDateTime.now(), whenToWork)
-        .run { if (isNegative) plusDays(1) else this }
-
 private fun getDailyCheckWorkRequest(): PeriodicWorkRequest {
+    val now = Clock.System.now()
+    val timeZone = TimeZone.currentSystemDefault()
+    val whenToWork = LocalDateTime(
+        now.toLocalDateTime(timeZone).date,
+        LocalTime.fromSecondOfDay(Settings.requestNewsTime),
+    ).toInstant(timeZone)
+    val initialDelay = (whenToWork - now).run { if (isNegative()) plus(1.days) else this }
    val constraints = Constraints.Builder()
        .setRequiredNetworkType(NetworkType.CONNECTED)
        .build()
    return PeriodicWorkRequestBuilder<DailyCheckWork>(Duration.ofDays(1))
        .setConstraints(constraints)
-        .setInitialDelay(initialDelay.seconds, TimeUnit.SECONDS)
+        .setInitialDelay(initialDelay.inWholeSeconds, TimeUnit.SECONDS)
        .build()
 }

@@ -77,7 +70,7 @@ fun updateDailyCheckWork(context: Context) {
    if (Settings.requestNews) {
        WorkManager.getInstance(context).enqueueUniquePeriodicWork(
            WORK_NAME,
-            ExistingPeriodicWorkPolicy.UPDATE,
+            ExistingPeriodicWorkPolicy.CANCEL_AND_REENQUEUE,
            getDailyCheckWorkRequest(),
        )
    } else {
@@ -86,12 +79,12 @@ fun updateDailyCheckWork(context: Context) {
 }

 val today
-    get() = Instant.now().truncatedTo(ChronoUnit.DAYS).epochSecond
+    get() = (Clock.System.now().epochSeconds / 86400).toInt()

 suspend fun checkDawn() = runCatching {
-    if (signedIn && Settings.lastDawnDay != today) {
+    if (EhCookieStore.hasSignedIn() && Settings.lastDawnDays != today) {
        EhEngine.getNews(true)?.let {
-            Settings.lastDawnDay = today
+            Settings.lastDawnDays = today
            showEventNotification(it)
        }
    }
@@ -1,30 +0,0 @@
-package com.hippo.ehviewer.dao
-
-import androidx.room.ColumnInfo
-import androidx.room.Entity
-import androidx.room.PrimaryKey
-
-@Entity(tableName = "OK_HTTP_3_COOKIE")
-data class Cookie(
-    @ColumnInfo(name = "NAME")
-    var name: String,
-    @ColumnInfo(name = "VALUE")
-    var value: String,
-    @ColumnInfo(name = "EXPIRES_AT")
-    var expiresAt: Long,
-    @ColumnInfo(name = "DOMAIN")
-    var domain: String,
-    @ColumnInfo(name = "PATH")
-    var path: String,
-    @ColumnInfo(name = "SECURE")
-    var secure: Boolean,
-    @ColumnInfo(name = "HTTP_ONLY")
-    var httpOnly: Boolean,
-    @ColumnInfo(name = "PERSISTENT")
-    var persistent: Boolean,
-    @ColumnInfo(name = "HOST_ONLY")
-    var hostOnly: Boolean,
-    @PrimaryKey
-    @ColumnInfo(name = "_id")
-    var id: Long?,
-)
@@ -1,10 +0,0 @@
-package com.hippo.ehviewer.dao
-
-import androidx.room.Dao
-import androidx.room.Query
-
-@Dao
-interface CookiesDao {
-    @Query("SELECT * FROM OK_HTTP_3_COOKIE")
-    suspend fun list(): List<Cookie>
-}
@@ -181,21 +181,6 @@ abstract class EhDatabase : RoomDatabase() {
    abstract fun quickSearchDao(): QuickSearchDao
 }

-// 1 -> 2 some nullability changes
-@Database(
-    entities = [Cookie::class],
-    version = 2,
-    autoMigrations = [
-        AutoMigration(
-            from = 1,
-            to = 2,
-        ),
-    ],
-)
-abstract class CookiesDatabase : RoomDatabase() {
-    abstract fun cookiesDao(): CookiesDao
-}
-
@Database(
    entities = [Search::class],
    version = 2,
@@ -10,7 +10,7 @@ import androidx.room.Relation
 import com.hippo.ehviewer.client.data.AbstractDownloadInfo
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
 import com.hippo.ehviewer.client.data.GalleryInfo
-import java.time.Instant
+import kotlinx.datetime.Clock

@Entity(
    tableName = "DOWNLOADS",
@@ -37,7 +37,7 @@ data class DownloadEntity(
    override var legacy: Int = 0,

    @ColumnInfo(name = "TIME")
-    override var time: Long = Instant.now().toEpochMilli(),
+    override var time: Long = Clock.System.now().toEpochMilliseconds(),

    @ColumnInfo(name = "LABEL", index = true)
    override var label: String? = null,
@@ -3,7 +3,7 @@ package com.hippo.ehviewer.dao
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
-import java.time.Instant
+import kotlinx.datetime.Clock

@Entity(tableName = "HISTORY", foreignKeys = [ForeignKey(BaseGalleryInfo::class, ["GID"], ["GID"])])
-class HistoryInfo(gid: Long, time: Long = Instant.now().toEpochMilli()) : TimeInfo(gid, time)
+class HistoryInfo(gid: Long, time: Long = Clock.System.now().toEpochMilliseconds()) : TimeInfo(gid, time)
@@ -3,7 +3,7 @@ package com.hippo.ehviewer.dao
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
-import java.time.Instant
+import kotlinx.datetime.Clock

@Entity(tableName = "LOCAL_FAVORITES", foreignKeys = [ForeignKey(BaseGalleryInfo::class, ["GID"], ["GID"])])
-class LocalFavoriteInfo(gid: Long = 0, time: Long = Instant.now().toEpochMilli()) : TimeInfo(gid, time)
+class LocalFavoriteInfo(gid: Long = 0, time: Long = Clock.System.now().toEpochMilliseconds()) : TimeInfo(gid, time)
@@ -18,6 +18,15 @@ package com.hippo.ehviewer.download
 import android.net.Uri
 import android.util.Log
 import android.util.SparseLongArray
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisallowComposableCalls
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.runtime.toMutableStateList
 import com.google.android.material.math.MathUtils
 import com.hippo.ehviewer.EhDB
 import com.hippo.ehviewer.Settings
@@ -32,51 +41,52 @@ import com.hippo.ehviewer.spider.readCompatFromUniFile
 import com.hippo.ehviewer.spider.write
 import com.hippo.ehviewer.util.AppConfig
 import com.hippo.ehviewer.util.ConcurrentPool
-import com.hippo.ehviewer.util.LongList
 import com.hippo.ehviewer.util.SimpleHandler
 import com.hippo.ehviewer.util.assertNotMainThread
+import com.hippo.ehviewer.util.mapNotNull
 import com.hippo.ehviewer.util.runAssertingNotMainThread
 import com.hippo.unifile.UniFile
+import com.hippo.unifile.asUniFile
+import com.hippo.unifile.asUniFileOrNull
 import eu.kanade.tachiyomi.util.lang.launchIO
-import eu.kanade.tachiyomi.util.lang.withUIContext
-import java.util.LinkedList
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.flow.SharingStarted
-import kotlinx.coroutines.flow.callbackFlow
-import kotlinx.coroutines.flow.filter
-import kotlinx.coroutines.flow.shareIn
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.transform
 import kotlinx.coroutines.launch
-import splitties.init.appCtx
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import splitties.preferences.edit

 object DownloadManager : OnSpiderListener {
    // All download info list
-    val allInfoList: LinkedList<DownloadInfo> = runAssertingNotMainThread { LinkedList(EhDB.getAllDownloadInfo()) }
+    val allInfoList = runAssertingNotMainThread { EhDB.getAllDownloadInfo() }.toMutableStateList()

    // All download info map
    private val mAllInfoMap = allInfoList.associateBy { it.gid } as MutableMap<Long, DownloadInfo>

    // label and info list map, without default label info list
-    private val map: MutableMap<String?, LinkedList<DownloadInfo>>
+    private val map: MutableMap<String?, SnapshotStateList<DownloadInfo>>

    // All labels without default label
-    val labelList = runAssertingNotMainThread { EhDB.getAllDownloadLabelList() } as MutableList<DownloadLabel>
+    val labelList = runAssertingNotMainThread { EhDB.getAllDownloadLabelList() }.toMutableStateList()

    // Store download info with default label
-    val defaultInfoList: LinkedList<DownloadInfo>
+    private val defaultInfoList: SnapshotStateList<DownloadInfo>

    // Store download info wait to start
-    private val mWaitList = LinkedList<DownloadInfo>()
+    private val mWaitList = ArrayDeque<DownloadInfo>()
    private val mSpeedReminder = SpeedReminder()
-    private var mDownloadInfoListener: DownloadInfoListener? = null
    private val mNotifyTaskPool = ConcurrentPool<NotifyTask?>(5)
    private var mDownloadListener: DownloadListener? = null
    private var mCurrentTask: DownloadInfo? = null
    private var mCurrentSpider: SpiderQueen? = null

+    private val mutableNotifyFlow = MutableSharedFlow<DownloadInfo>(extraBufferCapacity = 1)
+    val notifyFlow = mutableNotifyFlow.asSharedFlow()
+
+    private val mutex = Mutex()
+
    init {
        assertNotMainThread()
        map = runAssertingNotMainThread {
@@ -87,16 +97,16 @@ object DownloadManager : OnSpiderListener {
                        labelList.add(EhDB.addDownloadLabel(DownloadLabel(label, labelList.size)))
                    }
                }
-                it.key to LinkedList(it.value)
+                it.key to it.value.toMutableStateList()
            }
-        } as MutableMap<String?, LinkedList<DownloadInfo>>
-        defaultInfoList = map.remove(null) ?: LinkedList()
+        } as MutableMap<String?, SnapshotStateList<DownloadInfo>>
+        defaultInfoList = map.remove(null) ?: mutableStateListOf()
        labelList.forEach { (label) ->
-            map[label] ?: LinkedList<DownloadInfo>().also { map[label] = it }
+            map[label] ?: mutableStateListOf<DownloadInfo>().also { map[label] = it }
        }
    }

-    private fun getInfoListForLabel(label: String?) = if (label == null) {
+    fun getInfoListForLabel(label: String?) = if (label == null) {
        defaultInfoList
    } else {
        map[label]
@@ -116,8 +126,6 @@ object DownloadManager : OnSpiderListener {

    fun containDownloadInfo(gid: Long) = mAllInfoMap.containsKey(gid)

-    fun getLabelDownloadInfoList(label: String?) = map[label]
-
    fun getDownloadInfo(gid: Long) = mAllInfoMap[gid]

    fun getDownloadState(gid: Long): Int {
@@ -130,35 +138,37 @@ object DownloadManager : OnSpiderListener {
    }

    private suspend fun ensureDownload() {
-        if (mCurrentTask != null) {
-            // Only one download
-            return
-        }
+        mutex.withLock {
+            if (mCurrentTask != null) {
+                // Only one download
+                return
+            }

-        // Get download from wait list
-        if (!mWaitList.isEmpty()) {
-            val info = mWaitList.removeFirst()
-            val spider = SpiderQueen.obtainSpiderQueen(info, SpiderQueen.MODE_DOWNLOAD)
-            mCurrentTask = info
-            mCurrentSpider = spider
-            spider.addOnSpiderListener(this)
-            info.state = DownloadInfo.STATE_DOWNLOAD
-            info.speed = -1
-            info.remaining = -1
-            info.total = -1
-            info.finished = 0
-            info.downloaded = 0
-            info.legacy = -1
-            // Update in DB
-            EhDB.putDownloadInfo(info)
-            // Start speed count
-            mSpeedReminder.start()
-            // Notify start downloading
-            if (mDownloadListener != null) {
-                mDownloadListener!!.onStart(info)
+            // Get download from wait list
+            if (!mWaitList.isEmpty()) {
+                val info = mWaitList.removeFirst()
+                val spider = SpiderQueen.obtainSpiderQueen(info, SpiderQueen.MODE_DOWNLOAD)
+                mCurrentTask = info
+                mCurrentSpider = spider
+                spider.addOnSpiderListener(this)
+                info.state = DownloadInfo.STATE_DOWNLOAD
+                info.speed = -1
+                info.remaining = -1
+                info.total = -1
+                info.finished = 0
+                info.downloaded = 0
+                info.legacy = -1
+                // Update in DB
+                EhDB.putDownloadInfo(info)
+                // Start speed count
+                mSpeedReminder.start()
+                // Notify start downloading
+                if (mDownloadListener != null) {
+                    mDownloadListener!!.onStart(info)
+                }
+                // Notify state update
+                mutableNotifyFlow.emit(info)
            }
-            // Notify state update
-            mDownloadInfoListener?.onUpdate(info)
        }
    }

@@ -179,7 +189,7 @@ object DownloadManager : OnSpiderListener {
                // Update in DB
                EhDB.putDownloadInfo(info)
                // Notify state update
-                mDownloadInfoListener?.onUpdate(info)
+                mutableNotifyFlow.emit(info)
                // Make sure download is running
                ensureDownload()
            }
@@ -196,10 +206,10 @@ object DownloadManager : OnSpiderListener {
                Log.e(TAG, "Can't find download info list with label: $label")
                return
            }
-            list.addFirst(info)
+            list.add(0, info)

            // Add to all download list and map
-            allInfoList.addFirst(info)
+            allInfoList.add(0, info)
            mAllInfoMap[galleryInfo.gid] = info

            // Add to wait list
@@ -209,7 +219,7 @@ object DownloadManager : OnSpiderListener {
            EhDB.putDownloadInfo(info)

            // Notify
-            mDownloadInfoListener?.onUpdate(info)
+            mutableNotifyFlow.emit(info)
            // Make sure download is running
            ensureDownload()

@@ -218,90 +228,71 @@ object DownloadManager : OnSpiderListener {
        }
    }

-    suspend fun startRangeDownload(gidList: LongList) {
-        var update = false
-        for (i in 0 until gidList.size) {
-            val gid = gidList[i]
-            val info = mAllInfoMap[gid]
-            if (null == info) {
-                Log.d(TAG, "Can't get download info with gid: $gid")
-                continue
+    suspend fun startRangeDownload(gidList: LongArray) {
+        val updateList = gidList.mapNotNull { mAllInfoMap[it] }
+            .filter {
+                when (it.state) {
+                    DownloadInfo.STATE_NONE, DownloadInfo.STATE_FAILED, DownloadInfo.STATE_FINISH -> true
+                    else -> false
+                }
            }
-            if (info.state == DownloadInfo.STATE_NONE || info.state == DownloadInfo.STATE_FAILED || info.state == DownloadInfo.STATE_FINISH) {
-                update = true
-                // Set state DownloadInfo.STATE_WAIT
-                info.state = DownloadInfo.STATE_WAIT
-                // Add to wait list
-                mWaitList.add(info)
-                // Update in DB
-                EhDB.putDownloadInfo(info)
+        if (updateList.isNotEmpty()) {
+            updateList.onEach {
+                it.state = DownloadInfo.STATE_WAIT
+                EhDB.putDownloadInfo(it)
+                mutableNotifyFlow.emit(it)
            }
-        }
-        if (update) {
-            // Notify Listener
-            mDownloadInfoListener?.onUpdateAll()
-            // Ensure download
+            mWaitList.addAll(updateList)
            ensureDownload()
        }
    }

-    private val callbackFlowScope = CoroutineScope(Dispatchers.IO)
+    @Stable
+    @Composable
+    fun collectDownloadState(gid: Long): State<Int> = remember {
+        notifyFlow.transform { if (it.gid == gid) emit(getDownloadState(gid)) }
+    }.collectAsState(getDownloadState(gid))

-    private val _stateFlow = callbackFlow {
-        val listener = object : DownloadInfoListener {
-            override fun onUpdate(info: DownloadInfo) {
-                trySend(info.gid)
-            }
+    @Stable
+    @Composable
+    fun collectContainDownloadInfo(gid: Long): State<Boolean> = remember {
+        notifyFlow.transform { if (it.gid == gid) emit(containDownloadInfo(gid)) }
+    }.collectAsState(containDownloadInfo(gid))

-            override fun onUpdateAll() {
-                trySend(0)
-            }
-        }
-        mDownloadInfoListener = listener
-        awaitClose {
-            mDownloadInfoListener = null
-        }
-    }.shareIn(callbackFlowScope, SharingStarted.Eagerly)
-
-    fun stateFlow(gid: Long) = _stateFlow.filter { it == gid }
-
-    fun stateFlow() = _stateFlow
+    @Stable
+    @Composable
+    inline fun <T> updatedDownloadInfo(info: DownloadInfo, crossinline transform: @DisallowComposableCalls DownloadInfo.() -> T): T = remember {
+        notifyFlow.transform { if (it.gid == info.gid) emit(transform(it)) }
+    }.collectAsState(transform(info)).value

    suspend fun startAllDownload() {
-        var update = false
-        // Start all STATE_NONE and STATE_FAILED item
-        for (info in allInfoList) {
-            if (info.state == DownloadInfo.STATE_NONE || info.state == DownloadInfo.STATE_FAILED) {
-                update = true
-                // Set state DownloadInfo.STATE_WAIT
-                info.state = DownloadInfo.STATE_WAIT
-                // Add to wait list
-                mWaitList.add(info)
-                // Update in DB
-                EhDB.putDownloadInfo(info)
+        val updateList = allInfoList.filter {
+            when (it.state) {
+                DownloadInfo.STATE_NONE, DownloadInfo.STATE_FAILED -> true
+                else -> false
            }
        }
-        if (update) {
-            // Notify Listener
-            mDownloadInfoListener?.onUpdateAll()
-            // Ensure download
+        if (updateList.isNotEmpty()) {
+            updateList.onEach {
+                it.state = DownloadInfo.STATE_WAIT
+                EhDB.putDownloadInfo(it)
+                mutableNotifyFlow.emit(it)
+            }
+            mWaitList.addAll(updateList)
            ensureDownload()
        }
    }

-    suspend fun addDownload(downloadInfoList: List<DownloadInfo>, notify: Boolean = true) {
+    suspend fun addDownload(downloadInfoList: List<DownloadInfo>) {
        downloadInfoList.filterNot { containDownloadInfo(it.gid) }.forEach { info ->
            // Ensure download state
-            if (DownloadInfo.STATE_WAIT == info.state ||
-                DownloadInfo.STATE_DOWNLOAD == info.state
-            ) {
+            if (DownloadInfo.STATE_WAIT == info.state || DownloadInfo.STATE_DOWNLOAD == info.state) {
                info.state = DownloadInfo.STATE_NONE
            }
            info.position = allInfoList.size

            // Add to label download list
-            val list = getInfoListForLabel(info.label)
-                ?: addLabel(info.label).let { getInfoListForLabel(info.label)!! }
+            val list = getInfoListForLabel(info.label) ?: addLabel(info.label).let { getInfoListForLabel(info.label)!! }
            list.add(info)
            // Sort
            list.sortByPositionDescending()
@@ -316,17 +307,12 @@ object DownloadManager : OnSpiderListener {

        // Sort all download list
        allInfoList.sortByPositionDescending()
-
-        // Notify
-        if (notify) {
-            mDownloadInfoListener?.onUpdateAll()
-        }
    }

    suspend fun addDownloadLabel(downloadLabelList: List<DownloadLabel>) {
        val offset = downloadLabelList.size
        downloadLabelList.filterNot { containLabel(it.label) }.forEachIndexed { index, label ->
-            map[label.label] = LinkedList()
+            map[label.label] = mutableStateListOf()
            label.position = index + offset
            labelList.add(EhDB.addDownloadLabel(label))
        }
@@ -339,26 +325,24 @@ object DownloadManager : OnSpiderListener {

        // Add to default label download list
        val list = defaultInfoList
-        list.addFirst(info)
+        list.add(0, info)

        // Add to all download list and map
-        allInfoList.addFirst(info)
+        allInfoList.add(0, info)
        mAllInfoMap[galleryInfo.gid] = info

        // Save to
        EhDB.putDownloadInfo(info)

        // Notify
-        withUIContext {
-            mDownloadInfoListener?.onUpdate(info)
-        }
+        mutableNotifyFlow.emit(info)
    }

    suspend fun stopDownload(gid: Long) {
        val info = stopDownloadInternal(gid)
        if (info != null) {
            // Update listener
-            mDownloadInfoListener?.onUpdate(info)
+            mutableNotifyFlow.emit(info)
            // Ensure download
            ensureDownload()
        }
@@ -368,36 +352,41 @@ object DownloadManager : OnSpiderListener {
        val info = stopCurrentDownloadInternal()
        if (info != null) {
            // Update listener
-            mDownloadInfoListener?.onUpdate(info)
+            mutableNotifyFlow.emit(info)
            // Ensure download
            ensureDownload()
        }
    }

-    suspend fun stopRangeDownload(gidList: LongList) {
+    suspend fun stopRangeDownload(gidList: LongArray) {
        stopRangeDownloadInternal(gidList)

        // Update listener
-        mDownloadInfoListener?.onUpdateAll()
+        gidList.mapNotNull { mAllInfoMap[it] }.forEach {
+            mutableNotifyFlow.emit(it)
+        }

        // Ensure download
        ensureDownload()
    }

    suspend fun stopAllDownload() {
-        // Stop all in wait list
-        for (info in mWaitList) {
-            info.state = DownloadInfo.STATE_NONE
-            // Update in DB
-            EhDB.putDownloadInfo(info)
+        mutex.withLock {
+            // Stop all in wait list
+            for (info in mWaitList) {
+                info.state = DownloadInfo.STATE_NONE
+                // Update in DB
+                EhDB.putDownloadInfo(info)
+
+                // Notify
+                mutableNotifyFlow.emit(info)
+            }
+            mWaitList.clear()
+
+            // Stop current
+            val info = stopCurrentDownloadInternal()
+            info?.let { mutableNotifyFlow.emit(it) }
        }
-        mWaitList.clear()
-
-        // Stop current
-        stopCurrentDownloadInternal()
-
-        // Notify mDownloadInfoListener
-        mDownloadInfoListener?.onUpdateAll()
    }

    suspend fun deleteDownload(gid: Long, deleteFiles: Boolean = false) {
@@ -418,7 +407,7 @@ object DownloadManager : OnSpiderListener {
                if (index >= 0) {
                    list.remove(info)
                    // Update listener
-                    mDownloadInfoListener?.onUpdate(info)
+                    mutableNotifyFlow.emit(info)
                }
            }

@@ -432,7 +421,7 @@ object DownloadManager : OnSpiderListener {
        }
    }

-    suspend fun deleteRangeDownload(gidList: LongList) {
+    suspend fun deleteRangeDownload(gidList: LongArray) {
        stopRangeDownloadInternal(gidList)
        val list = gidList.mapNotNull { gid ->
            mAllInfoMap.remove(gid)?.also { getInfoListForLabel(it.label)?.remove(it) }
@@ -441,7 +430,7 @@ object DownloadManager : OnSpiderListener {
        allInfoList.removeAll(list.toSet())

        // Update listener
-        mDownloadInfoListener?.onUpdateAll()
+        list.forEach { mutableNotifyFlow.emit(it) }

        // Ensure download
        ensureDownload()
@@ -454,8 +443,7 @@ object DownloadManager : OnSpiderListener {
        val list = allInfoList.slice(range)
        val limit = allInfoList.size - 1
        list.zip(range).forEach { it.first.position = limit - it.second }
-        val label = allInfoList[fromPosition].label
-        getInfoListForLabel(label)!!.sortByPositionDescending()
+        getInfoListForLabel(info.label)!!.sortByPositionDescending()
        return list
    }

@@ -546,11 +534,11 @@ object DownloadManager : OnSpiderListener {

    // Update in DB
    // Update mDownloadListener
-    private suspend fun stopRangeDownloadInternal(gidList: LongList) {
+    private suspend fun stopRangeDownloadInternal(gidList: LongArray) {
        // Two way
        if (gidList.size < mWaitList.size) {
-            for (i in 0 until gidList.size) {
-                stopDownloadInternal(gidList[i])
+            for (element in gidList) {
+                stopDownloadInternal(element)
            }
        } else {
            // Check current task
@@ -578,12 +566,12 @@ object DownloadManager : OnSpiderListener {
    /**
     * @param label Not allow new label
     */
-    suspend fun changeLabel(list: List<DownloadInfo>, label: String?) {
+    suspend fun changeLabel(list: Collection<DownloadInfo>, label: String?) {
        if (null != label && !containLabel(label)) {
            Log.e(TAG, "Not exits label: $label")
            return
        }
-        val dstList: MutableList<DownloadInfo>? = getInfoListForLabel(label)
+        val dstList = getInfoListForLabel(label)
        if (dstList == null) {
            Log.e(TAG, "Can't find label with label: $label")
            return
@@ -592,7 +580,7 @@ object DownloadManager : OnSpiderListener {
            if (info.label == label) {
                continue
            }
-            val srcList: MutableList<DownloadInfo>? = getInfoListForLabel(info.label)
+            val srcList = getInfoListForLabel(info.label)
            if (srcList == null) {
                Log.e(TAG, "Can't find label with label: " + info.label)
                continue
@@ -605,7 +593,6 @@ object DownloadManager : OnSpiderListener {
            // Save to DB
            EhDB.putDownloadInfo(info)
        }
-        mDownloadInfoListener?.onUpdateAll()
    }

    suspend fun addLabel(label: String?) {
@@ -613,41 +600,19 @@ object DownloadManager : OnSpiderListener {
            return
        }
        labelList.add(EhDB.addDownloadLabel(DownloadLabel(label, labelList.size)))
-        map[label] = LinkedList()
-    }
-
-    suspend fun moveLabel(fromPosition: Int, toPosition: Int) {
-        val item = labelList.removeAt(fromPosition)
-        labelList.add(toPosition, item)
-        val range = if (fromPosition < toPosition) fromPosition..toPosition else toPosition..fromPosition
-        val list = labelList.slice(range)
-        list.zip(range).forEach { it.first.position = it.second }
-        EhDB.updateDownloadLabel(list)
+        map[label] = mutableStateListOf()
    }

    suspend fun renameLabel(from: String, to: String) {
-        // Find in label list
-        var found = false
-        for (raw in labelList) {
-            if (from == raw.label) {
-                found = true
-                raw.label = to
-                // Update in DB
-                EhDB.updateDownloadLabel(raw)
-                break
-            }
+        val index = labelList.indexOfFirst { it.label == from }
+        if (index != -1) {
+            val exist = labelList.removeAt(index)
+            val new = exist.copy(label = to)
+            labelList.add(index, new)
+            EhDB.updateDownloadLabel(new)
+            val list = map.remove(from)?.onEach { it.label = to }
+            if (list != null) map[to] = list
        }
-        if (!found) {
-            return
-        }
-        val list = map.remove(from) ?: return
-
-        // Update info label
-        for (info in list) {
-            info.label = to
-        }
-        // Put list back with new label
-        map[to] = list
    }

    suspend fun deleteLabel(label: String) {
@@ -754,18 +719,6 @@ object DownloadManager : OnSpiderListener {
        // Ignore
    }

-    interface DownloadInfoListener {
-        /**
-         * The special info is changed
-         */
-        fun onUpdate(info: DownloadInfo)
-
-        /**
-         * Maybe all data is changed, but size is the same
-         */
-        fun onUpdateAll()
-    }
-
    interface DownloadListener {
        /**
         * Get 509 error
@@ -870,7 +823,9 @@ object DownloadManager : OnSpiderListener {
                        Log.e(TAG, "Current task is null, but it should not be")
                    } else {
                        info.total = mPages
-                        mDownloadInfoListener?.onUpdate(info)
+                        launchIO {
+                            mutableNotifyFlow.emit(info)
+                        }
                    }
                }

@@ -899,7 +854,9 @@ object DownloadManager : OnSpiderListener {
                        if (mDownloadListener != null) {
                            mDownloadListener!!.onGetPage(info)
                        }
-                        mDownloadInfoListener?.onUpdate(info)
+                        launchIO {
+                            mutableNotifyFlow.emit(info)
+                        }
                    }
                }

@@ -912,7 +869,9 @@ object DownloadManager : OnSpiderListener {
                        info.finished = mFinished
                        info.downloaded = mDownloaded
                        info.total = mTotal
-                        mDownloadInfoListener?.onUpdate(info)
+                        launchIO {
+                            mutableNotifyFlow.emit(info)
+                        }
                    }
                }

@@ -951,7 +910,7 @@ object DownloadManager : OnSpiderListener {
                            if (mDownloadListener != null) {
                                mDownloadListener!!.onFinish(info)
                            }
-                            mDownloadInfoListener?.onUpdate(info)
+                            mutableNotifyFlow.emit(info)
                            // Start next download
                            ensureDownload()
                        }
@@ -1037,7 +996,9 @@ object DownloadManager : OnSpiderListener {
                if (mDownloadListener != null) {
                    mDownloadListener!!.onDownload(info)
                }
-                mDownloadInfoListener?.onUpdate(info)
+                launchIO {
+                    mutableNotifyFlow.emit(info)
+                }
            }
            mBytesRead = 0
            if (!mStop) {
@@ -1061,16 +1022,14 @@ object DownloadManager : OnSpiderListener {

 var downloadLocation: UniFile
    get() = with(Settings) {
-        UniFile.fromUri(
-            appCtx,
-            Uri.Builder().apply {
-                scheme(downloadScheme)
-                encodedAuthority(downloadAuthority)
-                encodedPath(downloadPath)
-                encodedQuery(downloadQuery)
-                encodedFragment(downloadFragment)
-            }.build(),
-        ) ?: UniFile.fromFile(AppConfig.defaultDownloadDir)!!
+        val uri = Uri.Builder().apply {
+            scheme(downloadScheme)
+            encodedAuthority(downloadAuthority)
+            encodedPath(downloadPath)
+            encodedQuery(downloadQuery)
+            encodedFragment(downloadFragment)
+        }.build()
+        uri.asUniFileOrNull() ?: requireNotNull(AppConfig.defaultDownloadDir).asUniFile()
    }
    set(value) = with(value.uri) {
        Settings.edit {
@@ -1082,4 +1041,4 @@ var downloadLocation: UniFile
        }
    }

-val DownloadInfo.downloadDir get() = dirname?.let { downloadLocation.subFile(it) }
+val DownloadInfo.downloadDir get() = dirname?.let { downloadLocation / it }
@@ -35,9 +35,8 @@ import com.hippo.ehviewer.client.EhUtils
 import com.hippo.ehviewer.client.data.BaseGalleryInfo
 import com.hippo.ehviewer.dao.DownloadInfo
 import com.hippo.ehviewer.ui.MainActivity
-import com.hippo.ehviewer.ui.scene.DownloadsScene
+import com.hippo.ehviewer.ui.screen.DownloadsFragment
 import com.hippo.ehviewer.util.FileUtils
-import com.hippo.ehviewer.util.LongList
 import com.hippo.ehviewer.util.ReadableTime
 import com.hippo.ehviewer.util.SimpleHandler
 import com.hippo.ehviewer.util.getParcelableExtraCompat
@@ -105,7 +104,7 @@ class DownloadService : Service(), DownloadManager.DownloadListener, CoroutineSc
            }

            ACTION_START_RANGE -> {
-                val gidList = intent.getParcelableExtraCompat<LongList>(KEY_GID_LIST)
+                val gidList = intent.getLongArrayExtra(KEY_GID_LIST)
                if (gidList != null) {
                    deferredMgr.await().startRangeDownload(gidList)
                }
@@ -125,7 +124,7 @@ class DownloadService : Service(), DownloadManager.DownloadListener, CoroutineSc
            ACTION_STOP_CURRENT -> deferredMgr.await().stopCurrentDownload()

            ACTION_STOP_RANGE -> {
-                val gidList = intent.getParcelableExtraCompat<LongList>(KEY_GID_LIST)
+                val gidList = intent.getLongArrayExtra(KEY_GID_LIST)
                if (gidList != null) {
                    deferredMgr.await().stopRangeDownload(gidList)
                }
@@ -141,7 +140,7 @@ class DownloadService : Service(), DownloadManager.DownloadListener, CoroutineSc
            }

            ACTION_DELETE_RANGE -> {
-                val gidList = intent.getParcelableExtraCompat<LongList>(KEY_GID_LIST)
+                val gidList = intent.getLongArrayExtra(KEY_GID_LIST)
                if (gidList != null) {
                    deferredMgr.await().deleteRangeDownload(gidList)
                }
@@ -188,7 +187,7 @@ class DownloadService : Service(), DownloadManager.DownloadListener, CoroutineSc
        clearIntent.action = ACTION_CLEAR
        val piClear = PendingIntent.getService(this, 0, clearIntent, PendingIntent.FLAG_IMMUTABLE)
        val bundle = Bundle()
-        bundle.putString(DownloadsScene.KEY_ACTION, DownloadsScene.ACTION_CLEAR_DOWNLOAD_SERVICE)
+        bundle.putString(DownloadsFragment.KEY_ACTION, DownloadsFragment.ACTION_CLEAR_DOWNLOAD_SERVICE)
        val activityIntent = Intent(this, MainActivity::class.java)
        activityIntent.action = ACTION_START_DOWNLOADSCENE
        activityIntent.putExtra(ACTION_START_DOWNLOADSCENE_ARGS, bundle)
@@ -244,7 +243,7 @@ class DownloadService : Service(), DownloadManager.DownloadListener, CoroutineSc
        }
        ensureDownloadingBuilder()
        val bundle = Bundle()
-        bundle.putLong(DownloadsScene.KEY_GID, info.gid)
+        bundle.putLong(DownloadsFragment.KEY_GID, info.gid)
        val activityIntent = Intent(this, MainActivity::class.java)
        activityIntent.action = ACTION_START_DOWNLOADSCENE
        activityIntent.putExtra(ACTION_START_DOWNLOADSCENE_ARGS, bundle)
@@ -13,17 +13,14 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-@file:RequiresApi(Build.VERSION_CODES.P)
-
 package com.hippo.ehviewer.gallery

 import android.content.Context
 import android.net.Uri
-import android.os.Build
 import android.os.ParcelFileDescriptor
 import android.util.Log
-import androidx.annotation.RequiresApi
 import com.hippo.ehviewer.Settings.archivePasswds
+import com.hippo.ehviewer.image.ByteBufferSource
 import com.hippo.ehviewer.image.Image
 import com.hippo.ehviewer.jni.closeArchive
 import com.hippo.ehviewer.jni.extractToByteBuffer
@@ -43,14 +40,16 @@ import kotlinx.coroutines.Job
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.currentCoroutineContext
 import kotlinx.coroutines.ensureActive
-import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Semaphore
 import kotlinx.coroutines.sync.withPermit
 import moe.tarsin.coroutines.NamedMutex
 import moe.tarsin.coroutines.withLock

-class ArchivePageLoader(context: Context, private val uri: Uri, passwdFlow: Flow<String>) : PageLoader2(), CoroutineScope {
+typealias PasswdInvalidator = (String) -> Boolean
+typealias PasswdProvider = suspend (PasswdInvalidator) -> String
+
+class ArchivePageLoader(context: Context, private val uri: Uri, passwdProvider: PasswdProvider) : PageLoader2(), CoroutineScope {
    override val coroutineContext = Dispatchers.IO + Job()
    private lateinit var pfd: ParcelFileDescriptor
    private val hostJob = launch(start = CoroutineStart.LAZY) {
@@ -65,12 +64,8 @@ class ArchivePageLoader(context: Context, private val uri: Uri, passwdFlow: Flow
                it ?: return@forEach
                if (providePassword(it)) return@launch
            }
-            passwdFlow.collect {
-                if (providePassword(it)) {
-                    archivePasswds = archivePasswds?.toMutableSet()?.apply { add(it) } ?: setOf(it)
-                    currentCoroutineContext().cancel()
-                }
-            }
+            val toAdd = passwdProvider { providePassword(it) }
+            archivePasswds = archivePasswds?.toMutableSet()?.apply { add(toAdd) } ?: setOf(toAdd)
        }
    }

@@ -112,7 +107,7 @@ class ArchivePageLoader(context: Context, private val uri: Uri, passwdFlow: Flow
        val buffer = extractToByteBuffer(index)
        buffer ?: return
        check(buffer.isDirect)
-        val src = object : Image.ByteBufferSource {
+        val src = object : ByteBufferSource {
            override val source: ByteBuffer = buffer

            override fun close() {
@@ -171,11 +166,7 @@ class ArchivePageLoader(context: Context, private val uri: Uri, passwdFlow: Flow
        return true
    }

-    override fun save(index: Int, dir: UniFile, filename: String): UniFile {
-        val dst = dir.subFile(filename)
-        save(index, dst!!)
-        return dst
-    }
+    override fun save(index: Int, dir: UniFile, filename: String) = (dir / filename).apply { save(index, this) }

    override fun preloadPages(pages: List<Int>, pair: Pair<Int, Int>) {}
 }
@@ -28,8 +28,10 @@ import java.util.Locale
 class EhPageLoader(private val mGalleryInfo: GalleryInfo) : PageLoader2(), OnSpiderListener {
    private lateinit var mSpiderQueen: SpiderQueen
    override fun start() {
-        mSpiderQueen = obtainSpiderQueen(mGalleryInfo, SpiderQueen.MODE_READ)
-        mSpiderQueen.addOnSpiderListener(this)
+        if (!::mSpiderQueen.isInitialized) {
+            mSpiderQueen = obtainSpiderQueen(mGalleryInfo, SpiderQueen.MODE_READ)
+            mSpiderQueen.addOnSpiderListener(this)
+        }
    }

    override fun stop() {
@@ -40,9 +40,3 @@ abstract class PageLoader2 : PageLoader() {
     */
    abstract fun save(index: Int, dir: UniFile, filename: String): UniFile?
 }
-
-val SUPPORT_IMAGE_EXTENSIONS = arrayOf(
-    ".jpg",
-    ".png",
-    ".gif",
-)
@@ -0,0 +1,32 @@
+@file:Suppress("ktlint:standard:property-naming")
+
+package com.hippo.ehviewer.icons
+
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.dp
+
+object EhIcons {
+    object Filled
+
+    object Big {
+        object Filled
+
+        val Default = Filled
+    }
+
+    val Default = Filled
+}
+
+inline fun bigIcon(
+    name: String,
+    block: ImageVector.Builder.() -> ImageVector.Builder,
+): ImageVector = ImageVector.Builder(
+    name = name,
+    defaultWidth = BigIconDimension.dp,
+    defaultHeight = BigIconDimension.dp,
+    viewportWidth = MaterialIconDimension,
+    viewportHeight = MaterialIconDimension,
+).block().build()
+
+const val BigIconDimension = 120f
+const val MaterialIconDimension = 24f
@@ -0,0 +1,44 @@
+package com.hippo.ehviewer.icons.big
+
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.icons.bigIcon
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Big.Filled.Download by unsafeLazy {
+    bigIcon(name = "Download") {
+        materialPath {
+            moveTo(0.0F, 19.0F)
+            verticalLineTo(24.0F)
+            horizontalLineTo(24.0F)
+            verticalLineTo(19.0F)
+            horizontalLineTo(0.0F)
+            close()
+            moveTo(16.0F, 22.0F)
+            horizontalLineTo(15.0F)
+            verticalLineTo(21.0F)
+            horizontalLineTo(16.0F)
+            verticalLineTo(22.0F)
+            close()
+            moveTo(19.0F, 22.0F)
+            horizontalLineTo(18.0F)
+            verticalLineTo(21.0F)
+            horizontalLineTo(19.0F)
+            verticalLineTo(22.0F)
+            close()
+            moveTo(22.0F, 22.0F)
+            horizontalLineTo(21.0F)
+            verticalLineTo(21.0F)
+            horizontalLineTo(22.0F)
+            verticalLineTo(22.0F)
+            moveTo(15.0F, 11.0F)
+            lineTo(15.0F, 0.0F)
+            lineTo(9.0F, 0.0F)
+            lineTo(9.0F, 11.0F)
+            lineTo(5.0F, 11.0F)
+            lineTo(12.0F, 18.0F)
+            lineTo(19.0F, 11.0F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,51 @@
+package com.hippo.ehviewer.icons.big
+
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.icons.bigIcon
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Big.Filled.History by unsafeLazy {
+    bigIcon(name = "History") {
+        materialPath {
+            moveTo(5.5F, 2.0F)
+            horizontalLineTo(22.0F)
+            verticalLineTo(0.0F)
+            horizontalLineTo(5.0F)
+            curveTo(3.3F, 0.0F, 2.0F, 1.3F, 2.0F, 3.0F)
+            verticalLineTo(21.0F)
+            curveTo(2.0F, 22.7F, 3.3F, 24.0F, 5.0F, 24.0F)
+            horizontalLineTo(22.0F)
+            verticalLineTo(4.0F)
+            horizontalLineTo(5.5F)
+            curveTo(4.1F, 4.0F, 4.1F, 2.0F, 5.5F, 2.0F)
+            close()
+            moveTo(20.0F, 6.0F)
+            verticalLineTo(22.0F)
+            horizontalLineTo(6.0F)
+            verticalLineTo(6.0F)
+            horizontalLineTo(20.0F)
+            moveTo(12.5F, 11.8F)
+            verticalLineTo(14.4F)
+            lineTo(14.9F, 15.8F)
+            lineTo(15.3F, 15.2F)
+            lineTo(13.3F, 14.0F)
+            verticalLineTo(11.9F)
+            moveTo(13.3F, 9.3F)
+            curveTo(11.5F, 9.3F, 10.0F, 10.3F, 9.2F, 11.7F)
+            lineTo(8.0F, 10.5F)
+            verticalLineTo(13.8F)
+            horizontalLineTo(11.3F)
+            lineTo(9.9F, 12.4F)
+            curveTo(10.5F, 11.1F, 11.8F, 10.3F, 13.3F, 10.3F)
+            curveTo(15.4F, 10.3F, 17.1F, 12.0F, 17.1F, 14.1F)
+            reflectiveCurveTo(15.4F, 17.9F, 13.3F, 17.9F)
+            curveTo(11.7F, 17.9F, 10.3F, 16.9F, 9.8F, 15.4F)
+            horizontalLineTo(8.7F)
+            curveTo(9.3F, 17.4F, 11.1F, 18.9F, 13.3F, 18.9F)
+            curveTo(15.9F, 18.9F, 18.1F, 16.8F, 18.1F, 14.1F)
+            curveTo(18.0F, 11.4F, 15.9F, 9.3F, 13.3F, 9.3F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,53 @@
+package com.hippo.ehviewer.icons.big
+
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.icons.bigIcon
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Big.Filled.SadAndroid by unsafeLazy {
+    bigIcon(name = "SadAndroid") {
+        materialPath {
+            moveTo(16.5F, 10.8F)
+            curveToRelative(-0.61F, 0.0F, -1.1F, 0.49F, -1.1F, 1.1F)
+            curveToRelative(0.0F, 0.61F, 0.49F, 1.1F, 1.1F, 1.1F)
+            reflectiveCurveToRelative(1.1F, -0.49F, 1.1F, -1.1F)
+            curveTo(17.6F, 11.29F, 17.11F, 10.8F, 16.5F, 10.8F)
+            close()
+            moveTo(8.2F, 10.1F)
+            curveToRelative(-0.61F, 0.0F, -1.1F, 0.49F, -1.1F, 1.1F)
+            reflectiveCurveToRelative(0.49F, 1.1F, 1.1F, 1.1F)
+            reflectiveCurveToRelative(1.1F, -0.49F, 1.1F, -1.1F)
+            reflectiveCurveTo(8.81F, 10.1F, 8.2F, 10.1F)
+            close()
+            moveTo(22.1F, 16.4F)
+            curveToRelative(-0.46F, -3.33F, -2.24F, -5.93F, -4.81F, -7.45F)
+            lineTo(19.5F, 6.3F)
+            curveToRelative(0.1F, -0.1F, 0.1F, -0.3F, 0.0F, -0.4F)
+            curveToRelative(-0.1F, -0.1F, -0.3F, -0.1F, -0.4F, 0.0F)
+            lineToRelative(-2.27F, 2.79F)
+            curveToRelative(-1.26F, -0.66F, -2.69F, -1.07F, -4.23F, -1.19F)
+            curveToRelative(-1.4F, -0.15F, -2.77F, -0.01F, -4.05F, 0.37F)
+            lineTo(6.7F, 4.7F)
+            curveTo(6.6F, 4.6F, 6.4F, 4.5F, 6.3F, 4.6F)
+            curveTo(6.2F, 4.7F, 6.1F, 4.9F, 6.2F, 5.0F)
+            lineToRelative(1.79F, 3.05F)
+            curveToRelative(-2.83F, 1.02F, -5.12F, 3.3F, -6.19F, 6.55F)
+            lineToRelative(15.44F, 1.37F)
+            curveToRelative(0.0F, 0.02F, -0.01F, 0.04F, -0.01F, 0.05F)
+            curveToRelative(0.0F, 0.59F, 0.48F, 1.07F, 1.07F, 1.07F)
+            curveToRelative(0.54F, 0.0F, 0.97F, -0.41F, 1.04F, -0.93F)
+            lineTo(22.1F, 16.4F)
+            close()
+            moveTo(2.63F, 14.07F)
+            curveToRelative(1.51F, -3.74F, 4.83F, -6.03F, 8.84F, -6.03F)
+            curveToRelative(0.35F, 0.0F, 0.71F, 0.02F, 1.07F, 0.06F)
+            curveToRelative(4.55F, 0.36F, 7.94F, 3.33F, 8.84F, 7.64F)
+            lineToRelative(-2.12F, -0.19F)
+            curveToRelative(-0.27F, -0.68F, -0.95F, -1.46F, -0.95F, -1.46F)
+            reflectiveCurveToRelative(-0.58F, 0.66F, -0.89F, 1.29F)
+            lineTo(2.63F, 14.07F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,39 @@
+package com.hippo.ehviewer.icons.filled
+
+import androidx.compose.material.icons.materialIcon
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Filled.Crop by unsafeLazy {
+    materialIcon(name = "Crop") {
+        materialPath {
+            moveTo(17.0F, 15.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineTo(7.0F)
+            curveToRelative(0.0F, -1.1F, -0.9F, -2.0F, -2.0F, -2.0F)
+            horizontalLineTo(9.0F)
+            verticalLineToRelative(2.0F)
+            horizontalLineToRelative(8.0F)
+            verticalLineToRelative(8.0F)
+            close()
+            moveTo(7.0F, 17.0F)
+            verticalLineTo(1.0F)
+            horizontalLineTo(5.0F)
+            verticalLineToRelative(4.0F)
+            horizontalLineTo(1.0F)
+            verticalLineToRelative(2.0F)
+            horizontalLineToRelative(4.0F)
+            verticalLineToRelative(10.0F)
+            curveToRelative(0.0F, 1.1F, 0.9F, 2.0F, 2.0F, 2.0F)
+            horizontalLineToRelative(10.0F)
+            verticalLineToRelative(4.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineToRelative(-4.0F)
+            horizontalLineToRelative(4.0F)
+            verticalLineToRelative(-2.0F)
+            horizontalLineTo(7.0F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,60 @@
+package com.hippo.ehviewer.icons.filled
+
+import androidx.compose.material.icons.materialIcon
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Filled.CropOff by unsafeLazy {
+    materialIcon(name = "CropOff") {
+        materialPath {
+            moveTo(7.0F, 1.0F)
+            lineToRelative(-2.0F, 0.0F)
+            lineToRelative(0.0F, 1.18F)
+            lineToRelative(2.0F, 2.0F)
+            lineToRelative(0.0F, -3.18F)
+            close()
+            moveTo(17.0F, 7.0F)
+            verticalLineToRelative(7.18F)
+            lineToRelative(0.82F, 0.82F)
+            horizontalLineTo(19.0F)
+            verticalLineTo(7.0F)
+            arcToRelative(2.0059F, 2.0059F, 0.0F, false, false, -2.0F, -2.0F)
+            horizontalLineTo(9.0F)
+            verticalLineTo(6.18F)
+            lineTo(9.82F, 7.0F)
+            close()
+            moveTo(19.0001F, 19.0F)
+            lineToRelative(-2.0F, -2.0F)
+            horizontalLineToRelative(0.0F)
+            lineTo(2.1F, 2.1F)
+            lineTo(0.68F, 3.51F)
+            lineTo(2.1707F, 5.0F)
+            horizontalLineTo(1.0F)
+            verticalLineTo(7.0F)
+            horizontalLineTo(4.1718F)
+            lineTo(5.0F, 7.8278F)
+            verticalLineTo(17.0F)
+            arcToRelative(2.0059F, 2.0059F, 0.0F, false, false, 2.0F, 2.0F)
+            horizontalLineToRelative(9.1778F)
+            lineTo(17.0F, 19.8218F)
+            verticalLineTo(23.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineTo(21.8207F)
+            lineTo(20.49F, 23.31F)
+            lineTo(21.9F, 21.9F)
+            lineToRelative(-2.9F, -2.9F)
+            close()
+            moveTo(7.0F, 17.0F)
+            verticalLineTo(9.8268F)
+            lineTo(14.1768F, 17.0F)
+            close()
+            moveTo(19.82F, 17.0F)
+            lineToRelative(2.0F, 2.0F)
+            lineToRelative(1.18F, 0.0F)
+            lineToRelative(0.0F, -2.0F)
+            lineToRelative(-3.18F, 0.0F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,33 @@
+package com.hippo.ehviewer.icons.filled
+
+import androidx.compose.material.icons.materialIcon
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Filled.GoTo by unsafeLazy {
+    materialIcon(name = "GoTo") {
+        materialPath {
+            moveTo(13.0F, 13.0F)
+            lineTo(17.0F, 17.0F)
+            lineTo(21.0F, 13.0F)
+            horizontalLineTo(18.0F)
+            verticalLineTo(10.0F)
+            curveTo(18.0F, 6.1F, 14.9F, 3.0F, 11.0F, 3.0F)
+            reflectiveCurveTo(4.0F, 6.1F, 4.0F, 10.0F)
+            verticalLineTo(17.0F)
+            horizontalLineTo(6.0F)
+            verticalLineTo(10.0F)
+            curveTo(6.0F, 7.2F, 8.2F, 5.0F, 11.0F, 5.0F)
+            reflectiveCurveTo(16.0F, 7.2F, 16.0F, 10.0F)
+            verticalLineTo(13.0F)
+            horizontalLineTo(13.0F)
+            moveTo(16.0F, 19.0F)
+            horizontalLineTo(18.0F)
+            verticalLineTo(21.0F)
+            horizontalLineTo(16.0F)
+            verticalLineTo(19.0F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,47 @@
+package com.hippo.ehviewer.icons.filled
+
+import androidx.compose.material.icons.materialIcon
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Filled.SadPanda by unsafeLazy {
+    materialIcon(name = "SadPanda") {
+        materialPath {
+            moveTo(21.1F, 7.8F)
+            curveTo(22.2F, 7.4F, 23.0F, 6.3F, 23.0F, 5.0F)
+            curveTo(23.0F, 3.3F, 21.7F, 2.0F, 20.0F, 2.0F)
+            curveTo(18.9F, 2.0F, 17.9F, 2.6F, 17.4F, 3.6F)
+            lineTo(21.1F, 7.8F)
+            moveTo(6.6F, 3.6F)
+            curveTo(6.1F, 2.6F, 5.1F, 2.0F, 4.0F, 2.0F)
+            curveTo(2.3F, 2.0F, 1.0F, 3.3F, 1.0F, 5.0F)
+            curveTo(1.0F, 6.3F, 1.8F, 7.4F, 2.9F, 7.8F)
+            lineTo(6.6F, 3.6F)
+            moveTo(10.1F, 13.0F)
+            lineTo(8.0F, 15.1F)
+            curveTo(7.4F, 15.7F, 6.5F, 15.7F, 5.9F, 15.1F)
+            lineTo(5.9F, 15.1F)
+            curveTo(5.3F, 14.5F, 5.3F, 13.6F, 5.9F, 13.0F)
+            lineTo(8.0F, 10.9F)
+            curveTo(8.6F, 10.3F, 9.5F, 10.3F, 10.1F, 10.9F)
+            lineTo(10.1F, 10.9F)
+            curveTo(10.7F, 11.5F, 10.7F, 12.4F, 10.1F, 13.0F)
+            moveTo(16.0F, 15.1F)
+            lineTo(13.9F, 13.0F)
+            curveTo(13.3F, 12.4F, 13.3F, 11.5F, 13.9F, 10.9F)
+            lineTo(13.9F, 10.9F)
+            curveTo(14.5F, 10.3F, 15.4F, 10.3F, 16.0F, 10.9F)
+            lineTo(18.1F, 13.0F)
+            curveTo(18.7F, 13.6F, 18.7F, 14.5F, 18.1F, 15.1F)
+            lineTo(18.1F, 15.1F)
+            curveTo(17.5F, 15.7F, 16.6F, 15.7F, 16.0F, 15.1F)
+            moveTo(12.0F, 17.0F)
+            curveTo(12.8F, 17.0F, 13.5F, 17.4F, 13.5F, 18.0F)
+            reflectiveCurveTo(12.8F, 19.0F, 12.0F, 19.0F)
+            reflectiveCurveTo(10.5F, 18.6F, 10.5F, 18.0F)
+            reflectiveCurveTo(11.2F, 17.0F, 12.0F, 17.0F)
+            close()
+        }
+    }
+}
@@ -0,0 +1,61 @@
+package com.hippo.ehviewer.icons.filled
+
+import androidx.compose.material.icons.materialIcon
+import androidx.compose.material.icons.materialPath
+import com.hippo.ehviewer.icons.EhIcons
+import com.hippo.ehviewer.util.unsafeLazy
+
+val EhIcons.Filled.Subscriptions by unsafeLazy {
+    materialIcon(name = "Subscriptions") {
+        materialPath {
+            moveTo(20.0F, 8.0F)
+            horizontalLineTo(4.0F)
+            verticalLineTo(6.0F)
+            horizontalLineToRelative(16.0F)
+            verticalLineTo(8.0F)
+            moveTo(18.0F, 2.0F)
+            horizontalLineTo(6.0F)
+            verticalLineToRelative(2.0F)
+            horizontalLineToRelative(12.0F)
+            verticalLineTo(2.0F)
+            moveTo(20.0F, 10.0F)
+            horizontalLineTo(4.0F)
+            curveToRelative(-1.1F, 0.0F, -2.0F, 0.9F, -2.0F, 2.0F)
+            verticalLineToRelative(8.0F)
+            curveToRelative(0.0F, 1.1F, 0.9F, 2.0F, 2.0F, 2.0F)
+            horizontalLineToRelative(16.0F)
+            curveToRelative(1.1F, 0.0F, 2.0F, -0.9F, 2.0F, -2.0F)
+            verticalLineToRelative(-8.0F)
+            curveTo(22.0F, 10.9F, 21.1F, 10.0F, 20.0F, 10.0F)
+            close()
+            moveTo(11.0F, 14.0F)
+            horizontalLineTo(7.0F)
+            verticalLineToRelative(1.0F)
+            horizontalLineToRelative(4.0F)
+            verticalLineToRelative(2.0F)
+            horizontalLineTo(7.0F)
+            verticalLineToRelative(1.0F)
+            horizontalLineToRelative(4.0F)
+            verticalLineToRelative(2.0F)
+            horizontalLineTo(5.0F)
+            verticalLineToRelative(-8.0F)
+            horizontalLineToRelative(6.0F)
+            verticalLineTo(14.0F)
+            close()
+            moveTo(19.0F, 20.0F)
+            horizontalLineToRelative(-2.0F)
+            verticalLineToRelative(-3.0F)
+            horizontalLineToRelative(-2.0F)
+            verticalLineToRelative(3.0F)
+            horizontalLineToRelative(-2.0F)
+            verticalLineToRelative(-8.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineToRelative(3.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineToRelative(-3.0F)
+            horizontalLineToRelative(2.0F)
+            verticalLineTo(20.0F)
+            close()
+        }
+    }
+}
@@ -19,74 +19,84 @@ package com.hippo.ehviewer.image

 import android.content.Context
 import android.graphics.Bitmap
-import android.graphics.BitmapFactory
 import android.graphics.ColorSpace
-import android.graphics.ImageDecoder
-import android.graphics.ImageDecoder.ImageInfo
-import android.graphics.ImageDecoder.Source
+import android.graphics.Rect
 import android.graphics.drawable.Animatable
-import android.graphics.drawable.BitmapDrawable
-import android.graphics.drawable.Drawable
 import android.net.Uri
 import android.os.Build
 import androidx.annotation.RequiresApi
-import coil.decode.BitmapFactoryDecoder
-import coil.decode.DecodeUtils
-import coil.decode.ImageSource
-import coil.request.Options
-import coil.size.Scale
-import coil.size.Size
+import arrow.core.Either
+import arrow.core.left
+import arrow.core.right
+import coil3.BitmapImage
+import coil3.DrawableImage
+import coil3.Image as CoilImage
+import coil3.asCoilImage
+import coil3.executeBlocking
+import coil3.imageLoader
+import coil3.request.CachePolicy
+import coil3.request.ErrorResult
+import coil3.request.SuccessResult
+import coil3.request.allowHardware
+import coil3.request.colorSpace
+import coil3.size.Precision
+import coil3.size.Scale
 import com.hippo.ehviewer.R
+import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.jni.isGif
 import com.hippo.ehviewer.jni.mmap
 import com.hippo.ehviewer.jni.munmap
 import com.hippo.ehviewer.jni.rewriteGifSource
+import com.hippo.ehviewer.ktbuilder.imageRequest
 import com.hippo.ehviewer.util.isAtLeastO
 import com.hippo.ehviewer.util.isAtLeastP
+import com.hippo.ehviewer.util.isAtLeastQ
 import com.hippo.ehviewer.util.isAtLeastU
 import com.hippo.unifile.UniFile
-import com.hippo.unifile.openInputStream
 import java.nio.ByteBuffer
-import kotlin.math.min
-import okio.buffer
-import okio.source
 import splitties.init.appCtx

-class Image private constructor(drawable: Drawable, private val src: AutoCloseable) {
-    var mObtainedDrawable: Drawable? = drawable
-        private set
+private const val CROP_THRESHOLD = 0.75f

-    val size: Int
-        get() = mObtainedDrawable!!.run { intrinsicHeight * intrinsicWidth * 4 * if (this is Animatable) 4 else 1 }
+class Image private constructor(image: CoilImage, private val src: AutoCloseable) {
+    val size = image.size
+    private val intrinsicRect = image.run { Rect(0, 0, width, height) }
+    val rect: Rect = if (Settings.cropBorder.value && image is BitmapImage) {
+        val array = detectBorder(image.bitmap)
+        val r = Rect(array[0], array[1], array[2], array[3])
+        val minWidth = image.width * CROP_THRESHOLD
+        val minHeight = image.height * CROP_THRESHOLD
+        if (r.width() > minWidth && r.height() > minHeight) r else intrinsicRect
+    } else {
+        intrinsicRect
+    }
+
+    var innerImage: CoilImage? = if (image is BitmapImage && isAtLeastQ) {
+        val bitmap = image.bitmap
+
+        // Upload to Graphical Buffer to accelerate render
+        bitmap.copy(Bitmap.Config.HARDWARE, false).apply {
+            bitmap.recycle()
+        }.asCoilImage()
+    } else {
+        image
+    }

    @Synchronized
    fun recycle() {
-        (mObtainedDrawable as? Animatable)?.stop()
-        (mObtainedDrawable as? BitmapDrawable)?.bitmap?.recycle()
-        mObtainedDrawable?.callback = null
-        if (mObtainedDrawable is Animatable) src.close()
-        mObtainedDrawable = null
+        when (val image = innerImage ?: return) {
+            is DrawableImage -> {
+                (image.drawable as Animatable).stop()
+                image.drawable.callback = null
+                src.close()
+            }
+            is BitmapImage -> image.bitmap.recycle()
+        }
+        innerImage = null
    }

    companion object {
-        @RequiresApi(Build.VERSION_CODES.P)
-        fun calculateSampleSize(info: ImageInfo, targetHeight: Int, targetWeight: Int): Int {
-            return min(
-                info.size.width / targetWeight,
-                info.size.height / targetHeight,
-            ).coerceAtLeast(1)
-        }
-
        private val imageSearchMaxSize = appCtx.resources.getDimensionPixelOffset(R.dimen.image_search_max_size)
-
-        @delegate:RequiresApi(Build.VERSION_CODES.P)
-        val imageSearchDecoderSampleListener by lazy {
-            ImageDecoder.OnHeaderDecodedListener { decoder, info, _ ->
-                decoder.setTargetSampleSize(
-                    calculateSampleSize(info, imageSearchMaxSize, imageSearchMaxSize),
-                )
-            }
-        }
        private val targetWidth = appCtx.resources.displayMetrics.widthPixels * 2
        private val targetHeight = appCtx.resources.displayMetrics.heightPixels * 2

@@ -96,60 +106,60 @@ class Image private constructor(drawable: Drawable, private val src: AutoCloseab
        @RequiresApi(Build.VERSION_CODES.O)
        lateinit var colorSpace: ColorSpace

-        suspend fun decode(src: AutoCloseable): Image? {
+        private suspend fun Either<ByteBufferSource, UniFileSource>.decodeCoil(): CoilImage {
+            val req = appCtx.imageRequest {
+                onLeft { data(it.source) }
+                onRight { data(it.source.uri) }
+                size(targetWidth, targetHeight)
+                scale(Scale.FILL)
+                precision(Precision.INEXACT)
+                if (isAtLeastO) {
+                    colorSpace(colorSpace)
+                }
+                if (Settings.cropBorder.value) {
+                    allowHardware(false)
+                }
+                memoryCachePolicy(CachePolicy.DISABLED)
+            }
+            return when (val result = appCtx.imageLoader.execute(req)) {
+                is SuccessResult -> result.image
+                is ErrorResult -> throw result.throwable
+            }
+        }
+
+        suspend fun decode(src: ImageSource): Image? {
            return runCatching {
                when (src) {
                    is UniFileSource -> {
-                        if (isAtLeastP) {
-                            if (!isAtLeastU) {
-                                src.source.openFileDescriptor("rw").use {
-                                    val fd = it.fd
-                                    if (isGif(fd)) {
-                                        val buffer = mmap(fd)!!
-                                        val source = object : ByteBufferSource {
-                                            override val source = buffer
-                                            override fun close() {
-                                                munmap(buffer)
-                                                src.close()
-                                            }
+                        if (isAtLeastP && !isAtLeastU) {
+                            src.source.openFileDescriptor("rw").use {
+                                val fd = it.fd
+                                if (isGif(fd)) {
+                                    val buffer = mmap(fd)!!
+                                    val source = object : ByteBufferSource {
+                                        override val source = buffer
+                                        override fun close() {
+                                            munmap(buffer)
+                                            src.close()
                                        }
-                                        return decode(source)
                                    }
+                                    return decode(source)
                                }
                            }
-                            val drawable = decodeDrawable(src.source.imageSource)
-                            if (drawable !is Animatable) src.close()
-                            Image(drawable, src)
-                        } else {
-                            val options = Options(
-                                appCtx,
-                                colorSpace = if (isAtLeastO) colorSpace else null,
-                                size = Size(targetWidth, targetHeight),
-                                scale = Scale.FILL,
-                            )
-                            val drawable = ImageSource(src.source.openInputStream().source().buffer(), appCtx).use {
-                                BitmapFactoryDecoder(it, options).decode().drawable
-                            }
-                            src.close()
-                            Image(drawable, src)
                        }
+                        val image = src.right().decodeCoil()
+                        if (image is BitmapImage) src.close()
+                        Image(image, src)
                    }

                    is ByteBufferSource -> {
-                        if (isAtLeastP) {
-                            if (!isAtLeastU) {
-                                rewriteGifSource(src.source)
-                            }
-                            val source = ImageDecoder.createSource(src.source)
-                            val drawable = decodeDrawable(source)
-                            if (drawable !is Animatable) src.close()
-                            Image(drawable, src)
-                        } else {
-                            TODO("Unsupported")
+                        if (isAtLeastP && !isAtLeastU) {
+                            rewriteGifSource(src.source)
                        }
+                        val image = src.left().decodeCoil()
+                        if (image is BitmapImage) src.close()
+                        Image(image, src)
                    }
-
-                    else -> TODO("Unsupported")
                }
            }.onFailure {
                src.close()
@@ -157,48 +167,30 @@ class Image private constructor(drawable: Drawable, private val src: AutoCloseab
            }.getOrNull()
        }

-        @RequiresApi(Build.VERSION_CODES.P)
-        private fun decodeDrawable(src: Source) = ImageDecoder.decodeDrawable(src) { decoder, info, _ ->
-            if (Build.VERSION.SDK_INT == Build.VERSION_CODES.P) {
-                // Allocating hardware bitmap may cause a crash on framework versions prior to Android Q
-                decoder.allocator = ImageDecoder.ALLOCATOR_SOFTWARE
+        fun Context.decodeBitmap(uri: Uri): Bitmap {
+            val req = imageRequest {
+                memoryCachePolicy(CachePolicy.DISABLED)
+                data(uri)
+                size(imageSearchMaxSize)
+                scale(Scale.FILL)
            }
-            decoder.setTargetColorSpace(colorSpace)
-            decoder.setTargetSampleSize(calculateSampleSize(info, targetHeight, targetWidth))
-        }
-
-        fun Context.decodeBitmap(uri: Uri): Bitmap? = if (isAtLeastP) {
-            val src = ImageDecoder.createSource(contentResolver, uri)
-            ImageDecoder.decodeBitmap(src, imageSearchDecoderSampleListener)
-        } else {
-            contentResolver.openFileDescriptor(uri, "r")!!.use {
-                val options = BitmapFactory.Options()
-
-                // Disable these since we straight up compress the bitmap to JPEG
-                options.inScaled = false
-                options.inPremultiplied = false
-
-                options.inJustDecodeBounds = true
-                BitmapFactory.decodeFileDescriptor(it.fileDescriptor, null, options)
-                options.inJustDecodeBounds = false
-
-                options.inSampleSize = DecodeUtils.calculateInSampleSize(
-                    options.outWidth,
-                    options.outHeight,
-                    imageSearchMaxSize,
-                    imageSearchMaxSize,
-                    Scale.FILL,
-                )
-                BitmapFactory.decodeFileDescriptor(it.fileDescriptor, null, options)
+            val image = when (val result = appCtx.imageLoader.executeBlocking(req)) {
+                is SuccessResult -> result.image
+                is ErrorResult -> throw result.throwable
            }
+            return (image as BitmapImage).bitmap
        }
    }
-
-    interface UniFileSource : AutoCloseable {
-        val source: UniFile
-    }
-
-    interface ByteBufferSource : AutoCloseable {
-        val source: ByteBuffer
-    }
 }
+
+sealed interface ImageSource : AutoCloseable
+
+interface UniFileSource : ImageSource {
+    val source: UniFile
+}
+
+interface ByteBufferSource : ImageSource {
+    val source: ByteBuffer
+}
+
+private external fun detectBorder(bitmap: Bitmap): IntArray
@@ -1,9 +1,5 @@
-@file:RequiresApi(Build.VERSION_CODES.P)
-
 package com.hippo.ehviewer.jni

-import android.os.Build
-import androidx.annotation.RequiresApi
 import java.nio.ByteBuffer

 external fun releaseByteBuffer(buffer: ByteBuffer)
@@ -1,9 +1,5 @@
-@file:RequiresApi(Build.VERSION_CODES.P)
-
 package com.hippo.ehviewer.jni

-import android.os.Build
-import androidx.annotation.RequiresApi
 import java.nio.ByteBuffer

 external fun isGif(fd: Int): Boolean
@@ -1,9 +1,9 @@
 package com.hippo.ehviewer.ktbuilder

 import android.content.Context
-import coil.ImageLoader
-import coil.disk.DiskCache
-import coil.request.ImageRequest
+import coil3.ImageLoader
+import coil3.disk.DiskCache
+import coil3.request.ImageRequest
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.client.data.GalleryPreview
 import com.hippo.ehviewer.coil.ehPreview
@@ -1,13 +0,0 @@
-package com.hippo.ehviewer.ktbuilder
-
-import com.chuckerteam.chucker.api.ChuckerInterceptor
-import okhttp3.Cache
-import okhttp3.OkHttpClient
-import okio.FileSystem
-import okio.Path
-import splitties.init.appCtx
-
-inline fun httpClient(builder: OkHttpClient.Builder.() -> Unit): OkHttpClient = OkHttpClient.Builder().apply(builder).build()
-inline fun httpClient(client: OkHttpClient, builder: OkHttpClient.Builder.() -> Unit): OkHttpClient = client.newBuilder().apply(builder).build()
-fun OkHttpClient.Builder.cache(directory: Path, maxSize: Long, fileSystem: FileSystem = FileSystem.SYSTEM) = cache(Cache(directory, maxSize, fileSystem))
-inline fun OkHttpClient.Builder.chunker(builder: ChuckerInterceptor.Builder.() -> Unit) = addInterceptor(ChuckerInterceptor.Builder(appCtx).apply(builder).build())