Version Bump

Fix name shadow
Use polly optimization
2022-07-14 11:20:29 +08:00 · 2022-07-14 11:19:10 +08:00 · 2022-07-14 11:08:39 +08:00 · 2022-07-14 09:51:47 +08:00 · 2022-07-14 09:26:37 +08:00 · 2022-07-14 09:24:47 +08:00
444 changed files with 33526 additions and 15546 deletions
@@ -1,20 +0,0 @@
---
-name: 功能申请 / Feature request
-about: 有个想法 / Suggest an idea for this project
-title: ''
-labels: ''
-assignees: ''
-
---
-
-**这个功能是用来解决问题的吗？ / Is your feature request related to a problem? Please describe.**
-描述这个问题。
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**描述你想要的解决方法 / Describe the solution you'd like**
-描述应通过何种行为来解决这个问题。
-A clear and concise description of what you want to happen.
-
-**备注 / Additional context**
-还有别的想说的吗？
-Add any other context or screenshots about the feature request here.
@@ -1,41 +0,0 @@
---
-name: Bug 反馈 / Bug report
-about: 出问题了 / Create a report to help us improve
-title: ''
-labels: ''
-assignees: ''
-
---
-
-**简略描述 / Describe the bug**
-大概说下是什么问题。
-A clear and concise description of what the bug is.
-
-**如何重现 / To Reproduce**
-重现的步骤：
-1. 打开什么什么
-2. 点击什么什么
-3. 出现什么什么问题
-Steps to reproduce the behavior:
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-
-**预期行为 / Expected behavior**
-应该是什么样子的？
-A clear and concise description of what you expected to happen.
-
-**截图 / Screenshots**
-能截图的话就发截图，请注意风序良俗。
-If applicable, add screenshots to help explain your problem.
-
-**设备型号与 Android 版本 / Device model and Android version**
- - 设备型号：【比如 Pixel 6 XXXL】
- - Android 版本：【比如 Android 12.1】
- - Device model: [e.g. Pixel 6 XXXL]
- - Android version: [e.g. Android 12.1]
-
-**备注 / Additional context**
-还有什么想说的？
-Add any other context about the problem here.
@@ -0,0 +1,111 @@
+name: Bug 反馈 / Bug report
+description: 提交一个问题报告 / Create a bug report to help us improve
+labels:
+  - "bug"
+body:
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: 复现步骤 / Step to reproduce
+      description: |
+        在此处写下复现的方式
+        Describe how to reproduce here
+      placeholder: |
+        1.
+        2.
+        3.
+    validations:
+      required: true
+
+  - type: textarea
+    id : expected
+    attributes:
+      label: 预期行为 / Expected behaviour
+      description: |
+        在此处说明正常情况下应用的预期行为
+        Describe what should happened here
+      placeholder: |
+        它应该XXX...
+        It should be ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: 实际行为 / Actual Behaviour
+      description: |
+        在此处描绘应用的实际行为，最好附上截图
+        Describe what actually happened here, screenshots is better
+      placeholder: |
+        实际上它XXX...
+        Actually it ...
+        [截图] / [Screenshots]
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: EhViewer 版本号 / EhViewer version code
+      description: 您可以在设置 - 关于处找到版本号 / You can get version code in Settings - About
+      placeholder: 四位版本号 / 4 digits version code
+    validations:
+      required: true
+
+  - type: input
+    id: ci
+    attributes:
+      label: EhViewer CI 版本 / EhViewer CI Version
+      description: 直接将对应 CI 下载页面网址填入即可 / Simply drop CI download page url here
+      placeholder: https://github.com/asuka-mio/Ehviewer/actions/runs/XXXXXXXXXX
+    validations:
+      required: true
+
+  - type: input
+    id: system
+    attributes:
+      label: Android 系统版本 / Android version
+      description: Android 分支名称 + 版本号 / AOSP fork name + version code
+      placeholder: MIUI 12.5, ArrowOS 12.1
+    validations:
+      required: true
+
+  - type: input
+    id: device
+    attributes:
+      label: 设备信息 / Device info
+      description: 特殊设备在此填入设备信息 / Put message here if you device is special
+      placeholder: WSA, arm-v7a
+
+  - type: textarea
+    id: log
+    attributes:
+      label: 应用日志 / App logs
+      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: true
+
+  - type: checkboxes
+    id: check
+    attributes:
+      label: 自查步骤 / Verify steps
+      description: |
+        请确认您已经遵守所有必选项
+        Please ensure you have obtained all needed options
+      options:
+      - label: 如果您有足够的时间和能力，并愿意为此提交 PR ，请勾上此复选框 / Pull request is welcome. Check this if you want to start a pull request
+        required: false
+
+      - label: 您已仔细查看并知情 [Q&A](https://github.com/asuka-mio/Ehviewer/issues/61) 中的内容 / You have checked [Q&A](https://github.com/asuka-mio/Ehviewer/issues/61) carefully
+        required: true
+
+      - label: 您已搜索过 [Issue Tracker](https://github.com/asuka-mio/Ehviewer/issues)，没有找到类似内容 / I have searched on [Issue Tracker](https://github.com/asuka-mio/Ehviewer/issues), No duplicate or related open issue has been found
+        required: true
+
+      - label: 您确保这个 Issue 只提及一个问题。如果您有多个问题报告，烦请发起多个 Issue / Ensure there is only one bug report in this issue. Please make mutiply issue for mutiply bugs
+        required: true
+
+      - label: 您确保已使用最新 CI 版本测试，并且该问题在最新 CI 版本中并未解决 / This bug have not solved in latest CI version
+        required: true
@@ -0,0 +1,4 @@
+contact_links:
+ - name: 所有其他问题 / All other questions
+   url: https://github.com/asuka-mio/Ehviewer/discussions
+   about: 转到 Discussions / Turn to discussions
@@ -0,0 +1,85 @@
+name: 功能请求 / Feature request
+description: 提出一个功能建议 / Suggest an idea for this project
+labels:
+  - "enhancement"
+body:
+  - type: textarea
+    id: request
+    attributes:
+      label: 需求 / Requirement
+      description: |
+        在此处描述您的需求。这通常会是一个您想要的功能
+        Ddescribe what you need here.
+      placeholder: |
+          我需要 XXX 功能 ...
+          I want ABC feature ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: impl
+    attributes:
+      label: 建议实现 / Suggested implements
+      description: |
+        在此处表述您建议的实现方式。如有可能，UI 类功能请求还请尽量附上图示
+        Describe your suggested implements here, It's recommend to add a photo if you are making a UI feature request.
+      placeholder: |
+          建议在 XX 处添加 XX ...
+          I recommend add ABC feature to DEF...
+          图片（如果有）/ Photos (if exists)
+    validations:
+      required: true
+
+  - type: textarea
+    id: more
+    attributes:
+      label: 其他细节 / Addition details
+      description: |
+        在此处写下其他您想说的内容
+        Describe addition details here
+      placeholder: |
+        其他有用的信息与附件
+        Additional details and attachments
+    validations:
+      required: false
+
+  - type: input
+    id: version
+    attributes:
+      label: EhViewer 版本号 / EhViewer version code
+      description: 您可以在设置 - 关于处找到版本号 / You can get version code in Settings - About
+      placeholder: 四位版本号 / 4 digits version code
+    validations:
+      required: true
+
+  - type: input
+    id: ci
+    attributes:
+      label: EhViewer CI 版本 / EhViewer CI Version
+      description: 直接将对应 CI 下载页面网址填入即可 / Simply drop CI download page url here
+      placeholder: https://github.com/asuka-mio/Ehviewer/actions/runs/XXXXXXXXXX
+    validations:
+      required: true
+
+  - type: checkboxes
+    id: check
+    attributes:
+      label: 自查步骤 / Verify steps
+      description: |
+        请确认您已经遵守所有必选项
+        Please ensure you have obtained all needed options
+      options:
+      - label: 如果您有足够的时间和能力，并愿意为此提交 PR ，请勾上此复选框 / Pull request is welcome. Check this if you want to start a pull request
+        required: false
+
+      - label: 您已仔细查看并知情 [Q&A](https://github.com/asuka-mio/Ehviewer/issues/61) 中的内容 / You have checked [Q&A](https://github.com/asuka-mio/Ehviewer/issues/61) carefully
+        required: true
+
+      - label: 您已搜索过 [Issue Tracker](https://github.com/asuka-mio/Ehviewer/issues)，没有找到类似内容 / I have searched on [Issue Tracker](https://github.com/asuka-mio/Ehviewer/issues), No duplicate or related open issue has been found
+        required: true
+
+      - label: 您确保这个 Issue 只提及一个功能。如果您有多个功能请求，烦请发起多个 Issue / Ensure there is only one feature request in this issue. Please make mutiply issue for mutiply feature request
+        required: true
+
+      - label: 您确保已使用最新 CI 版本测试，并且该功能在最新 CI 版本中并未按照预期实现 / This feature don't implement correctly in latest CI version
+        required: true
@@ -1,11 +0,0 @@
---
-name: Sad Panda / 下载太慢 / Slow download speed
-about: 所有其他问题 / All other questions
-title: ''
-labels: ''
-assignees: ''
-
---
-
-加入我们的 Telegram 群组，[https://t.me/ehviewer](https://t.me/ehviewer)。温柔[大小]姐姐手把手帮你解决问题。
-Join our Telegram group, [https://t.me/ehviewer](https://t.me/ehviewer). Administrators will help you solve the problem.
@@ -1,57 +1,54 @@
 name: EhViewer

-on: 
- push:
-    branches:
-    - master
+on: push

 jobs:
  linux:
    name: Build
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v2
-      - name: set up JDK 1.8
-        uses: actions/setup-java@v1
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v3
        with:
-          java-version: 1.8
-      - uses: actions/cache@v1
-        with:
-          path: ~/.gradle/caches
-          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
-          restore-keys: |
-            ${{ runner.os }}-gradle-
-      - name: Build
-        env:
-          KEYSTORE_PASS: ${{ secrets.KEYSTORE_PASS }}
-          ALIAS_NAME: ${{ secrets.ALIAS_NAME }}
-          ALIAS_PASS: ${{ secrets.ALIAS_PASS }}
+          distribution: temurin
+          java-version: 11
+
+      - name: Setup Android SDK Tools
+        uses: android-actions/setup-android@v2
+
+      - name: Install NDK
        run: |
-          ./gradlew assembleRelease
-          echo ::set-env name=APK_FILE::$(find app/build/outputs/apk -name "*.apk")
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@latest
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+          echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;25.0.8775105" --sdk_root=${ANDROID_SDK_ROOT} &> /dev/null
+
+      - name: Gradle Build
+        uses: gradle/gradle-build-action@v2
+      - run: |
+          git submodule update --init --recursive
+          gradle assembleRelease
+
+      - name: Update ARM64
+        uses: actions/upload-artifact@v3
        with:
-          tag_name: 1.7.4_${{ github.run_id }}
-          release_name: 1.7.4_${{ github.run_id }}
-          body: ""
-          draft: false
-          prerelease: true
-      - name: Upload Release Asset
-        id: upload-release-asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          name: arm64-${{ github.sha }}
+          path: app/build/outputs/apk/release/app-arm64-v8a-release.apk
+
+      - name: Update x86_64
+        uses: actions/upload-artifact@v3
        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
-          asset_path: ${{ env.APK_FILE }}
-          asset_name: app-release.apk
-          asset_content_type: application/vnd.android.package-archive
-      - uses: actions/upload-artifact@master
-        name: Upload artifact
+          name: x86_64-${{ github.sha }}
+          path: app/build/outputs/apk/release/app-x86_64-release.apk
+
+      - name: Update ARM32
+        uses: actions/upload-artifact@v3
        with:
-          name: EhViewer
-          path: app/build/outputs/
+          name: armeabi-v7a-${{ github.sha }}
+          path: app/build/outputs/apk/release/app-armeabi-v7a-release.apk
+
+      - name: Update x86
+        uses: actions/upload-artifact@v3
+        with:
+          name: x86-${{ github.sha }}
+          path: app/build/outputs/apk/release/app-x86-release.apk
@@ -0,0 +1,43 @@
+name: Releases
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  linux:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 11
+
+      - name: Setup Android SDK Tools
+        uses: android-actions/setup-android@v2
+
+      - name: Install NDK
+        run: |
+          echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;25.0.8775105" --sdk_root=${ANDROID_SDK_ROOT} &> /dev/null
+
+      - name: Gradle Build
+        uses: gradle/gradle-build-action@v2
+      - run: |
+          git submodule update --init --recursive
+          gradle assembleRelease
+
+      - name: Releases
+        uses: softprops/action-gh-release@v0.1.14
+        with:
+          body: Bump Version
+          files: |
+            app/build/outputs/apk/release/app-arm64-v8a-release.apk
+            app/build/outputs/apk/release/app-x86_64-release.apk
+            app/build/outputs/apk/release/app-x86-release.apk
+            app/build/outputs/apk/release/app-armeabi-v7a-release.apk
@@ -1,12 +1,15 @@
-[submodule "native/src/main/jni/a7zip/p7zip/p7zip"]
-	path = native/src/main/jni/a7zip/p7zip/p7zip
-	url = https://github.com/seven332/p7zip.git
 [submodule "native/src/main/jni/image/libjpeg-turbo/libjpeg-turbo"]
 	path = native/src/main/jni/image/libjpeg-turbo/libjpeg-turbo
-	url = https://gitlab.com/NekoInverter/libjpeg-turbo.git
+	url = https://github.com/asuka-mio/libjpeg-turbo
 [submodule "native/src/main/jni/image/giflib/giflib"]
 	path = native/src/main/jni/image/giflib/giflib
 	url = https://gitlab.com/NekoInverter/giflib.git
 [submodule "native/src/main/jni/image/libpng/libpng"]
 	path = native/src/main/jni/image/libpng/libpng
 	url = https://gitlab.com/NekoInverter/libpng.git
+[submodule "native/src/main/jni/libarchive"]
+	path = native/src/main/jni/libarchive
+	url = https://github.com/asuka-mio/libarchive
+[submodule "native/src/main/jni/liblzma"]
+	path = native/src/main/jni/liblzma
+	url = https://git.tukaani.org/xz.git
@@ -1,202 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007

-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.

-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+                            Preamble

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+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -1,22 +1,50 @@
-### [下载](https://install.appcenter.ms/users/nekoinverter/apps/ehviewer/distribution_groups/public)
+<h1 align="center">
+  <img src="art/launcher_icon-web.png" width="200">
+  <br>EhViewer<br>
+</h1>

-[Download](https://install.appcenter.ms/users/nekoinverter/apps/ehviewer/distribution_groups/public)
+<p align="center">
+  <a href="https://github.com/asuka-mio/Ehviewer/actions">
+    <img src="https://img.shields.io/github/workflow/status/asuka-mio/Ehviewer/EhViewer" alt="Github Actions">
+  </a>
+  <a href="https://github.com/asuka-mio/Ehviewer/blob/master/LICENSE">
+    <img src="https://img.shields.io/github/license/asuka-mio/Ehviewer" alt="LICENSE">
+  </a>
+  <a href="https://www.codefactor.io/repository/github/asuka-mio/ehviewer">
+    <img src="https://www.codefactor.io/repository/github/asuka-mio/ehviewer/badge" alt="CodeFactor">
+  </a>
+  <a href="https://github.com/asuka-mio/Ehviewer/releases">
+    <img src="https://img.shields.io/github/v/release/asuka-mio/ehviewer?include_prereleases" alt="Release">
+  </a>
+  <a href="https://github.com/asuka-mio/Ehviewer/issues">
+    <img src="https://img.shields.io/github/issues/asuka-mio/ehviewer" alt="Issues">
+  </a>
+</p>

-# EhViewer
+## Description
+这是一个 E-Hentai Android 平台的浏览器

-![Icon](art/launcher_icon-web.png)
+已针对性适配 Material Design 3 及其动态取色系统
+
+动态配色仅供 Android 12 及以上平台使用！

-这是一个 E-Hentai Android 平台的浏览器。

 An E-Hentai Application for Android.

+with Material Design 3 and Dynamic Color Support.

-# Screenshot
+Dynamic Color only support Android S and above!
+
+## Download
+
+[Github 下载](https://github.com/asuka-mio/Ehviewer/releases)
+
+## Screenshot

 ![screenshot-01](art/screenshot-01.png)
+![screenshot-02](art/screenshot-02.png)

-
-# Thanks
+## Thanks

 本项目受到了诸多开源项目的帮助

@@ -29,29 +57,26 @@ Here is the libraries
 - [giflib](http://giflib.sourceforge.net)
 - [greenDAO](https://github.com/greenrobot/greenDAO)
 - [jsoup](https://github.com/jhy/jsoup)
- [libjpeg-turbo](http://libjpeg-turbo.virtualgl.org/)
+- [libjpeg-turbo](https://libjpeg-turbo.org/)
 - [libpng](http://www.libpng.org/pub/png/libpng.html)
 - [okhttp](https://github.com/square/okhttp)
 - [roaster](https://github.com/forge/roaster)
- [ShowcaseView](https://github.com/amlcurran/ShowcaseView)
- [Slabo](https://github.com/TiroTypeworks/Slabo)
+- [TapTargetView](https://github.com/KeepSafe/TapTargetView)
 - [TagSoup](http://home.ccil.org/~cowan/tagsoup/)
+- [libarchive](http://www.libarchive.org/)
+- [XZ Utils](https://tukaani.org/xz/)


-# License
+## License

-    Copyright (C) 2014-2019 Hippo Seven
+    Copyright 2014-2019 Hippo Seven
+    Copyright 2020-2022 NekoInverter
+    Copyright 2022 Tarsin Norbin

-    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
+    EhViewer is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

-        http://www.apache.org/licenses/LICENSE-2.0
+    EhViewer is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

-    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.
+    You should have received a copy of the GNU General Public License along with EhViewer. If not, see <https://www.gnu.org/licenses/>.

-ic_launcher 图标为 Hippo Seven 所有，所有权利保留
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fasuka-mio%2FEhviewer.svg?type=large)](https://app.fossa.com/projects/git%2Bgithub.com%2Fasuka-mio%2FEhviewer?ref=badge_large)
@@ -5,8 +5,8 @@ plugins {
 }

 android {
-    compileSdkVersion 32
-    buildToolsVersion "32.0.0"
+    compileSdkVersion 33
+    buildToolsVersion "33.0.0"

    Properties localProperties = new Properties()
    if (project.rootProject.file('local.properties').exists()) {
@@ -17,27 +17,25 @@ android {
        abi {
            enable = true
            reset()
-            include 'arm64-v8a', 'x86_64'
+            include 'arm64-v8a', 'x86_64', 'armeabi-v7a', 'x86'
        }
    }

    signingConfigs {
-        if (localProperties.getProperty("storeFile") != null) {
-            sign {
-                storeFile file(localProperties.getProperty("storeFile"))
-                storePassword localProperties.getProperty("storePassword")
-                keyAlias localProperties.getProperty("keyAlias")
-                keyPassword localProperties.getProperty("keyPassword")
-            }
+        sign {
+            storeFile file(signStoreFile)
+            storePassword signStorePassword
+            keyAlias signkeyAlias
+            keyPassword signkeyPassword
        }
    }

    defaultConfig {
-        applicationId "io.github.nekoinverter.ehviewer"
-        minSdkVersion 31
-        targetSdkVersion 32
-        versionCode 114516
-        versionName "1.7.26.7"
+        applicationId "moe.tarsin.ehviewer"
+        minSdkVersion 26
+        targetSdkVersion 33
+        versionCode 114528
+        versionName "1.7.28.1"
        resConfigs 'zh', 'zh-rCN', 'zh-rHK', 'zh-rTW', 'es', 'ja', 'ko', 'fr', 'de', 'th'
    }

@@ -72,17 +70,11 @@ android {
            minifyEnabled true
            shrinkResources true
            proguardFiles 'proguard-rules.pro'
-            if (localProperties.getProperty("storeFile") != null) {
-                signingConfig signingConfigs.sign
-            }
+            signingConfig signingConfigs.sign
        }
        debug {
            applicationIdSuffix ".debug"
-            if (localProperties.getProperty("storeFile") != null) {
-                signingConfig signingConfigs.sign
-            } else {
-                signingConfig signingConfigs.debug
-            }
+            signingConfig signingConfigs.debug
        }
    }

@@ -91,6 +83,7 @@ android {
            java.srcDirs += 'src/main/java-gen'
        }
    }
+
    namespace 'com.hippo.ehviewer'
 }

@@ -99,56 +92,34 @@ tasks.withType(JavaCompile) {
 }

 dependencies {
-    implementation 'androidx.activity:activity:1.4.0'
-    implementation 'androidx.biometric:biometric:1.1.0'
+    implementation 'androidx.activity:activity:1.6.0-alpha05'
+    implementation 'androidx.appcompat:appcompat:1.6.0-alpha05'
+    implementation 'androidx.biometric:biometric-ktx:1.2.0-alpha04'
    implementation 'androidx.browser:browser:1.4.0'
-    implementation 'androidx.core:core:1.7.0'
-    implementation 'androidx.dynamicanimation:dynamicanimation:1.1.0-alpha03'
-    implementation 'androidx.fragment:fragment:1.4.1'
+    implementation 'androidx.fragment:fragment:1.5.0'
+    implementation "androidx.lifecycle:lifecycle-process:2.5.0"
    implementation 'androidx.preference:preference:1.2.0'
    implementation 'androidx.recyclerview:recyclerview:1.2.1'
    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.2.0-alpha01'
    implementation 'androidx.webkit:webkit:1.4.0'
    implementation 'com.drakeet.drawer:drawer:1.0.3'
-    implementation 'com.google.android.material:material:1.6.0'
+    implementation 'com.google.android.material:material:1.7.0-alpha02'
    implementation 'com.getkeepsafe.taptargetview:taptargetview:1.13.3'
-    implementation 'com.github.seven332:beerbelly:0.1.4'
-    implementation 'com.github.seven332:glgallery:0.1.2'
-    implementation 'com.github.seven332:glview:0.1.0'
-    implementation 'com.github.seven332:glview-image:0.1.0'
-    implementation 'com.github.seven332:streampipe:0.1.0'
-    implementation 'com.github.seven332:tuxiang:0.1.6'
-    implementation 'com.github.seven332:unifile:9ec57bcd8f'
-    implementation 'com.github.seven332:yorozuya-thread:0.1.1'
-    implementation 'com.github.seven332:yorozuya-collect:0.1.4'
    implementation 'com.h6ah4i.android.widget.advrecyclerview:advrecyclerview:1.0.0'
-    implementation 'com.squareup.okhttp3:okhttp:4.9.2'
-    implementation 'com.squareup.okhttp3:okhttp-dnsoverhttps:4.9.2'
+    implementation 'com.squareup.okhttp3:okhttp:5.0.0-alpha.10'
    implementation 'com.takisoft.preferencex:preferencex:1.1.0'
-    implementation 'com.gitlab.NekoInverter:yorozuya:723dc867a9'
-    implementation 'dev.rikka.rikkax.appcompat:appcompat:1.4.1'
-    implementation 'dev.rikka.rikkax.core:core:1.3.4'
-    implementation 'dev.rikka.rikkax.insets:insets:1.2.0'
+    implementation 'dev.rikka.rikkax.core:core-ktx:1.4.1'
+    implementation 'dev.rikka.rikkax.insets:insets:1.3.0'
    implementation 'dev.rikka.rikkax.layoutinflater:layoutinflater:1.2.0'
-    implementation 'dev.rikka.rikkax.material:material:1.6.6'
-    implementation 'dev.rikka.rikkax.recyclerview:recyclerview-ktx:1.3.1'
-    implementation 'dev.rikka.rikkax.widget:borderview:1.1.0'
    implementation 'dev.rikka.rikkax.preference:simplemenu-preference:1.0.3'
+    implementation 'dev.rikka.rikkax.material:material-preference:2.0.0'
    implementation 'org.ccil.cowan.tagsoup:tagsoup:1.2.1'
    implementation 'org.greenrobot:greendao:3.3.0'
-    implementation 'org.jsoup:jsoup:1.14.3'
+    implementation 'org.jsoup:jsoup:1.15.2'
    implementation projects.native
 }

 configurations.all {
-    resolutionStrategy {
-        force 'com.github.seven332:glgallery:25893283ca'
-        force 'com.github.seven332:glview:ba6aee61d7'
-        force 'com.github.seven332:glview-image:68d94b0fc2'
-
-        exclude group: 'com.github.seven332', module: 'okhttp'
-        exclude group: 'com.github.seven332', module: 'image'
-        exclude group: 'com.github.seven332', module: 'yorozuya'
-        exclude group: 'androidx.appcompat', module: 'appcompat'
-    }
+    exclude group: 'dev.rikka.rikkax.appcompat', module: 'appcompat'
+    exclude group: 'dev.rikka.rikkax.material', module: 'material'
 }
@@ -14,16 +14,15 @@
  ~ limitations under the License.
 -->

-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools">
-
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-feature android:name="android.software.leanback" android:required="false" />
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission
        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
-        android:maxSdkVersion="28"
-        tools:ignore="ScopedStorage" />
+        android:maxSdkVersion="28" />

    <uses-feature
        android:glEsVersion="0x00020000"
@@ -41,14 +40,14 @@
        android:largeHeap="true"
        android:networkSecurityConfig="@xml/network_security_config"
        android:roundIcon="@mipmap/ic_launcher_round"
-        android:theme="@style/AppTheme"
-        tools:ignore="UnusedAttribute">
+        android:theme="@style/AppTheme">

        <activity
            android:name="com.hippo.ehviewer.ui.MainActivity"
            android:configChanges="screenSize"
            android:exported="true"
            android:launchMode="singleTask"
+            android:banner="@mipmap/ic_leanback_banner"
            android:windowSoftInputMode="adjustResize|stateAlwaysHidden">

            <intent-filter>
@@ -56,6 +55,11 @@
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+            </intent-filter>
+
            <meta-data
                android:name="android.app.shortcuts"
                android:resource="@xml/shortcuts" />
@@ -91,8 +95,7 @@
            android:name="com.hippo.ehviewer.ui.GalleryActivity"
            android:configChanges="screenSize"
            android:exported="true"
-            android:launchMode="singleTask"
-            android:theme="@style/AppTheme.Gallery">
+            android:launchMode="singleTask">

            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
@@ -1,45 +0,0 @@
-package androidx.recyclerview.widget;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-public class BridgeRecyclerView extends RecyclerView {
-    public BridgeRecyclerView(@NonNull Context context) {
-        super(context);
-    }
-
-    public BridgeRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    public BridgeRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-    }
-
-    @Override
-    void scrollStep(int dx, int dy, @Nullable int[] consumed) {
-        try {
-            super.scrollStep(dx, dy, consumed);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Override
-    public boolean scrollByInternal(int x, int y, MotionEvent ev, int type) {
-        return super.scrollByInternal(x, y, ev, type);
-    }
-
-    @Override
-    protected void onLayout(boolean changed, int l, int t, int r, int b) {
-        try {
-            super.onLayout(changed, l, t, r, b);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-}
@@ -0,0 +1,493 @@
+/*
+ * Copyright (C) 2015-2016 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.beerbelly;
+
+import android.util.Log;
+import android.util.LruCache;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.hippo.streampipe.InputStreamPipe;
+import com.hippo.streampipe.OutputStreamPipe;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public abstract class BeerBelly<V> {
+
+    private static final String TAG = BeerBelly.class.getSimpleName();
+    private final boolean mHasMemoryCache;
+    private final boolean mHasDiskCache;
+    @Nullable
+    private MemoryCache<V> mMemoryCache;
+    @Nullable
+    private DiskCache<V> mDiskCache;
+
+    public BeerBelly(BeerBellyParams params) {
+        params.isValid();
+        mHasMemoryCache = params.hasMemoryCache;
+        mHasDiskCache = params.hasDiskCache;
+
+        if (mHasMemoryCache) {
+            initMemoryCache(params.memoryCacheMaxSize);
+        }
+
+        if (mHasDiskCache) {
+            initDiskCache(params.diskCacheDir, params.diskCacheMaxSize);
+        }
+    }
+
+    private void initMemoryCache(int maxSize) {
+        mMemoryCache = new MemoryCache<>(maxSize, this);
+    }
+
+    private void initDiskCache(File cacheDir, int maxSize) {
+        // Set up disk cache
+        try {
+            mDiskCache = new DiskCache<>(cacheDir, maxSize, this);
+        } catch (IOException e) {
+            Log.e(TAG, "Can't create disk cache", e);
+        }
+    }
+
+    protected abstract int sizeOf(String key, V value);
+
+    protected abstract void memoryEntryAdded(V value);
+
+    protected abstract void memoryEntryRemoved(boolean evicted, String key, V oldValue, V newValue);
+
+    protected abstract V read(@NonNull InputStreamPipe isPipe);
+
+    protected abstract boolean write(OutputStream os, V value);
+
+    @Nullable
+    public LruCache<String, V> getMemoryCache() {
+        return mMemoryCache;
+    }
+
+    @Nullable
+    public SimpleDiskCache getDiskCache() {
+        if (mDiskCache != null) {
+            return mDiskCache.mDiskCache;
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Check if have memory cache
+     *
+     * @return true if have memory cache
+     */
+    public boolean hasMemoryCache() {
+        return mHasMemoryCache;
+    }
+
+    /**
+     * Check if have disk cache
+     *
+     * @return true if have disk cache
+     */
+    public boolean hasDiskCache() {
+        return mHasDiskCache;
+    }
+
+    /**
+     * Get memory cache usage size
+     *
+     * @return {@code -1} for no memory cache
+     */
+    public int memorySize() {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            return mMemoryCache.size();
+        } else {
+            return -1;
+        }
+    }
+
+    /**
+     * Get memory cache max size
+     *
+     * @return {@code -1} for no memory cache
+     */
+    public int memoryMaxSize() {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            return mMemoryCache.maxSize();
+        } else {
+            return -1;
+        }
+    }
+
+    /**
+     * Get disk cache usage size
+     *
+     * @return {@code -1L} for no memory cache
+     */
+    public long diskSize() {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.size();
+        } else {
+            return -1L;
+        }
+    }
+
+    /**
+     * Get disk cache max size
+     *
+     * @return {@code -1L} for no memory cache
+     */
+    public long diskMaxSize() {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.getMaxSize();
+        } else {
+            return -1L;
+        }
+    }
+
+    /**
+     * Get value from memory cache
+     *
+     * @param key the key to get value
+     * @return the value you get, null for miss or no memory cache
+     */
+    public V getFromMemory(@NonNull String key) {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            return mMemoryCache.get(key);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Get value from disk cache. Override {@link #read(InputStreamPipe)} to do it
+     *
+     * @param key the key to get value
+     * @return the value you get, null for miss or no memory cache or get error
+     */
+    public V getFromDisk(@NonNull String key) {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.get(key);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Get value from memory cache and disk cache. If miss in memory cache and
+     * get in disk cache, it will put value from disk cache to memory cache.
+     *
+     * @param key the key to get value
+     * @return the value you get
+     */
+    public V get(@NonNull String key) {
+        V value = getFromMemory(key);
+
+        if (value != null) {
+            // Get it in memory cache
+            return value;
+        }
+
+        value = getFromDisk(key);
+
+        if (value != null) {
+            // Get it in disk cache
+            putToMemory(key, value);
+            return value;
+        }
+
+        return null;
+    }
+
+    /**
+     * Put value to memory cache
+     *
+     * @param key   the key
+     * @param value the value
+     * @return false if no memory cache
+     */
+    public boolean putToMemory(@NonNull String key, @NonNull V value) {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            memoryEntryAdded(value);
+            mMemoryCache.put(key, value);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Put value to disk cache
+     *
+     * @param key   the key
+     * @param value the value
+     * @return false if no disk cache or get error
+     */
+    public boolean putToDisk(@NonNull String key, @NonNull V value) {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.put(key, value);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Put value to memory cache and disk cache
+     *
+     * @param key   the key
+     * @param value the value
+     */
+    public void put(@NonNull String key, @NonNull V value) {
+        putToMemory(key, value);
+        putToDisk(key, value);
+    }
+
+    public void removeFromMemory(@NonNull String key) {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            mMemoryCache.remove(key);
+        }
+    }
+
+    public void removeFromDisk(@NonNull String key) {
+        if (mHasDiskCache && mDiskCache != null) {
+            mDiskCache.remove(key);
+        }
+    }
+
+    public void remove(@NonNull String key) {
+        removeFromMemory(key);
+        removeFromDisk(key);
+    }
+
+    public boolean pullFromDiskCache(@NonNull String key, @NonNull OutputStream os) {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.pull(key, os);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * @param key the key
+     * @param is  the input stream to store
+     * @return false if no disk cache or get error
+     */
+    public boolean putRawToDisk(@NonNull String key, @NonNull InputStream is) {
+        if (mHasDiskCache && mDiskCache != null) {
+            return mDiskCache.putRaw(key, is);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Evicts all of the items from the memory cache
+     */
+    public void clearMemory() {
+        if (mHasMemoryCache && mMemoryCache != null) {
+            mMemoryCache.evictAll();
+        }
+    }
+
+    /**
+     * Clear disk cache
+     */
+    public void clearDisk() {
+        if (mHasDiskCache && mDiskCache != null) {
+            mDiskCache.clear();
+        }
+    }
+
+    public void flush() {
+        if (mHasDiskCache && mDiskCache != null) {
+            mDiskCache.flush();
+        }
+    }
+
+    /**
+     * Evicts all of the items from the memory cache and lets the system know
+     * now would be a good time to garbage collect
+     */
+    public void clear() {
+        clearMemory();
+        clearDisk();
+    }
+
+    /**
+     * A holder class that contains cache parameters.
+     */
+    public static class BeerBellyParams {
+
+        /**
+         * is memory cache available
+         */
+        public boolean hasMemoryCache = false;
+        /**
+         * the maximum number of bytes the memory cache should use to store
+         */
+        public int memoryCacheMaxSize = 0;
+        /**
+         * is disk cache available
+         */
+        public boolean hasDiskCache = false;
+        /**
+         * the dir to store disk cache
+         */
+        public File diskCacheDir = null;
+        /**
+         * the maximum number of bytes the disk cache should use to store
+         */
+        public int diskCacheMaxSize = 0;
+
+        /**
+         * Check BeerBellyParams is valid
+         */
+        public void isValid() throws IllegalStateException {
+            if (!hasMemoryCache && !hasDiskCache) {
+                throw new IllegalStateException("No memory cache and no disk cache. What can I do for you?");
+            }
+
+            if (hasMemoryCache && memoryCacheMaxSize <= 0) {
+                throw new IllegalStateException("Memory cache max size must be bigger than 0.");
+            }
+
+            if (hasDiskCache) {
+                if (diskCacheDir == null) {
+                    throw new IllegalStateException("Disk cache dir can't be null.");
+                }
+                if (diskCacheMaxSize <= 0) {
+                    throw new IllegalStateException("Disk cache max size must be bigger than 0.");
+                }
+            }
+        }
+    }
+
+    private static class DiskCache<E> {
+
+        private static final int IO_BUFFER_SIZE = 8 * 1024;
+
+        private final SimpleDiskCache mDiskCache;
+        private final BeerBelly<E> mParent;
+
+        private final File mCacheDir;
+        private final int mMaxSize;
+
+        public DiskCache(File cacheDir, int size, BeerBelly<E> parent) throws IOException {
+            mDiskCache = new SimpleDiskCache(cacheDir, size);
+            mParent = parent;
+
+            mCacheDir = cacheDir;
+            mMaxSize = size;
+        }
+
+        public File getCacheDir() {
+            return mCacheDir;
+        }
+
+        public int getMaxSize() {
+            return mMaxSize;
+        }
+
+        public long size() {
+            return mDiskCache.size();
+        }
+
+        public void flush() {
+            mDiskCache.flush();
+        }
+
+        public void clear() {
+            mDiskCache.clear();
+        }
+
+        public E get(String key) {
+            InputStreamPipe isPipe = mDiskCache.getInputStreamPipe(key);
+            if (isPipe == null) {
+                return null;
+            } else {
+                return mParent.read(isPipe);
+            }
+        }
+
+        public boolean put(String key, E value) {
+            OutputStreamPipe osPipe = mDiskCache.getOutputStreamPipe(key);
+            BufferedOutputStream buffOut = null;
+            try {
+                osPipe.obtain();
+                OutputStream os = osPipe.open();
+                buffOut = new BufferedOutputStream(os, IO_BUFFER_SIZE);
+                return mParent.write(os, value);
+            } catch (IOException e) {
+                return false;
+            } finally {
+                Util.closeQuietly(buffOut);
+                osPipe.close();
+                osPipe.release();
+            }
+        }
+
+        public boolean putRaw(String key, InputStream is) {
+            return mDiskCache.put(key, is);
+        }
+
+        public void remove(String key) {
+            mDiskCache.remove(key);
+        }
+
+        public boolean pull(@NonNull String key, @NonNull OutputStream os) {
+            InputStreamPipe isPipe = mDiskCache.getInputStreamPipe(key);
+            if (isPipe == null) {
+                return false;
+            } else {
+                try {
+                    isPipe.obtain();
+                    InputStream is = isPipe.open();
+                    Util.copy(is, os);
+                    return true;
+                } catch (IOException e) {
+                    return false;
+                } finally {
+                    isPipe.close();
+                    isPipe.release();
+                }
+            }
+        }
+    }
+
+    private class MemoryCache<E> extends LruCache<String, E> {
+
+        public BeerBelly<E> mParent;
+
+        public MemoryCache(int maxSize, BeerBelly<E> parent) {
+            super(maxSize);
+            mParent = parent;
+        }
+
+        @Override
+        protected int sizeOf(String key, E value) {
+            return mParent.sizeOf(key, value);
+        }
+
+        @Override
+        protected void entryRemoved(boolean evicted, String key, E oldValue, E newValue) {
+            mParent.memoryEntryRemoved(evicted, key, oldValue, newValue);
+        }
+    }
+}
@@ -0,0 +1,983 @@
+/*
+ * Copyright (C) 2011 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 com.hippo.beerbelly;
+
+import java.io.BufferedWriter;
+import java.io.Closeable;
+import java.io.EOFException;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.concurrent.Callable;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * A cache that uses a bounded amount of space on a filesystem. Each cache
+ * entry has a string key and a fixed number of values. Each key must match
+ * the regex <strong>[a-z0-9_-]{1,120}</strong>. Values are byte sequences,
+ * accessible as streams or files. Each value must be between {@code 0} and
+ * {@code Integer.MAX_VALUE} bytes in length.
+ *
+ * <p>The cache stores its data in a directory on the filesystem. This
+ * directory must be exclusive to the cache; the cache may delete or overwrite
+ * files from its directory. It is an error for multiple processes to use the
+ * same cache directory at the same time.
+ *
+ * <p>This cache limits the number of bytes that it will store on the
+ * filesystem. When the number of stored bytes exceeds the limit, the cache will
+ * remove entries in the background until the limit is satisfied. The limit is
+ * not strict: the cache may temporarily exceed it while waiting for files to be
+ * deleted. The limit does not include filesystem overhead or the cache
+ * journal so space-sensitive applications should set a conservative limit.
+ *
+ * <p>Clients call {@link #edit} to create or update the values of an entry. An
+ * entry may have only one editor at one time; if a value is not available to be
+ * edited then {@link #edit} will return null.
+ * <ul>
+ * <li>When an entry is being <strong>created</strong> it is necessary to
+ * supply a full set of values; the empty value should be used as a
+ * placeholder if necessary.
+ * <li>When an entry is being <strong>edited</strong>, it is not necessary
+ * to supply data for every value; values default to their previous
+ * value.
+ * </ul>
+ * Every {@link #edit} call must be matched by a call to {@link Editor#commit}
+ * or {@link Editor#abort}. Committing is atomic: a read observes the full set
+ * of values as they were before or after the commit, but never a mix of values.
+ *
+ * <p>Clients call {@link #get} to read a snapshot of an entry. The read will
+ * observe the value at the time that {@link #get} was called. Updates and
+ * removals after the call do not impact ongoing reads.
+ *
+ * <p>This class is tolerant of some I/O errors. If files are missing from the
+ * filesystem, the corresponding entries will be dropped from the cache. If
+ * an error occurs while writing a cache value, the edit will fail silently.
+ * Callers should handle other problems by catching {@code IOException} and
+ * responding appropriately.
+ */
+public final class DiskLruCache implements Closeable {
+    static final String JOURNAL_FILE = "journal";
+    static final String JOURNAL_FILE_TEMP = "journal.tmp";
+    static final String JOURNAL_FILE_BACKUP = "journal.bkp";
+    static final String MAGIC = "libcore.io.DiskLruCache";
+    static final String VERSION_1 = "1";
+    static final long ANY_SEQUENCE_NUMBER = -1;
+    static final String STRING_KEY_PATTERN = "[a-z0-9_-]{1,120}";
+    static final Pattern LEGAL_KEY_PATTERN = Pattern.compile(STRING_KEY_PATTERN);
+    private static final String CLEAN = "CLEAN";
+    private static final String DIRTY = "DIRTY";
+    private static final String REMOVE = "REMOVE";
+    private static final String READ = "READ";
+
+    /*
+     * This cache uses a journal file named "journal". A typical journal file
+     * looks like this:
+     *     libcore.io.DiskLruCache
+     *     1
+     *     100
+     *     2
+     *
+     *     CLEAN 3400330d1dfc7f3f7f4b8d4d803dfcf6 832 21054
+     *     DIRTY 335c4c6028171cfddfbaae1a9c313c52
+     *     CLEAN 335c4c6028171cfddfbaae1a9c313c52 3934 2342
+     *     REMOVE 335c4c6028171cfddfbaae1a9c313c52
+     *     DIRTY 1ab96a171faeeee38496d8b330771a7a
+     *     CLEAN 1ab96a171faeeee38496d8b330771a7a 1600 234
+     *     READ 335c4c6028171cfddfbaae1a9c313c52
+     *     READ 3400330d1dfc7f3f7f4b8d4d803dfcf6
+     *
+     * The first five lines of the journal form its header. They are the
+     * constant string "libcore.io.DiskLruCache", the disk cache's version,
+     * the application's version, the value count, and a blank line.
+     *
+     * Each of the subsequent lines in the file is a record of the state of a
+     * cache entry. Each line contains space-separated values: a state, a key,
+     * and optional state-specific values.
+     *   o DIRTY lines track that an entry is actively being created or updated.
+     *     Every successful DIRTY action should be followed by a CLEAN or REMOVE
+     *     action. DIRTY lines without a matching CLEAN or REMOVE indicate that
+     *     temporary files may need to be deleted.
+     *   o CLEAN lines track a cache entry that has been successfully published
+     *     and may be read. A publish line is followed by the lengths of each of
+     *     its values.
+     *   o READ lines track accesses for LRU.
+     *   o REMOVE lines track entries that have been deleted.
+     *
+     * The journal file is appended to as cache operations occur. The journal may
+     * occasionally be compacted by dropping redundant lines. A temporary file named
+     * "journal.tmp" will be used during compaction; that file should be deleted if
+     * it exists when the cache is opened.
+     */
+    private static final OutputStream NULL_OUTPUT_STREAM = new OutputStream() {
+        @Override
+        public void write(int b) {
+            // Eat all writes silently. Nom nom.
+        }
+    };
+    /**
+     * This cache uses a single background thread to evict entries.
+     */
+    final ThreadPoolExecutor executorService =
+            new ThreadPoolExecutor(0, 1, 60L, TimeUnit.SECONDS, new LinkedBlockingQueue<>());
+    private final File directory;
+    private final File journalFile;
+    private final File journalFileTmp;
+    private final File journalFileBackup;
+    private final int appVersion;
+    private final int valueCount;
+    private final LinkedHashMap<String, Entry> lruEntries =
+            new LinkedHashMap<>(0, 0.75f, true);
+    private long maxSize;
+    private long size = 0;
+    private Writer journalWriter;
+    private int redundantOpCount;
+    /**
+     * To differentiate between old and current snapshots, each entry is given
+     * a sequence number each time an edit is committed. A snapshot is stale if
+     * its sequence number is not equal to its entry's sequence number.
+     */
+    private long nextSequenceNumber = 0;    private final Callable<Void> cleanupCallable = new Callable<>() {
+        public Void call() throws Exception {
+            synchronized (DiskLruCache.this) {
+                if (journalWriter == null) {
+                    return null; // Closed.
+                }
+                trimToSize();
+                if (journalRebuildRequired()) {
+                    rebuildJournal();
+                    redundantOpCount = 0;
+                }
+            }
+            return null;
+        }
+    };
+
+    private DiskLruCache(File directory, int appVersion, int valueCount, long maxSize) {
+        this.directory = directory;
+        this.appVersion = appVersion;
+        this.journalFile = new File(directory, JOURNAL_FILE);
+        this.journalFileTmp = new File(directory, JOURNAL_FILE_TEMP);
+        this.journalFileBackup = new File(directory, JOURNAL_FILE_BACKUP);
+        this.valueCount = valueCount;
+        this.maxSize = maxSize;
+    }
+
+    /**
+     * Opens the cache in {@code directory}, creating a cache if none exists
+     * there.
+     *
+     * @param directory  a writable directory
+     * @param valueCount the number of values per cache entry. Must be positive.
+     * @param maxSize    the maximum number of bytes this cache should use to store
+     * @throws IOException if reading or writing the cache directory fails
+     */
+    public static DiskLruCache open(File directory, int appVersion, int valueCount, long maxSize)
+            throws IOException {
+        if (maxSize <= 0) {
+            throw new IllegalArgumentException("maxSize <= 0");
+        }
+        if (valueCount <= 0) {
+            throw new IllegalArgumentException("valueCount <= 0");
+        }
+
+        // If a bkp file exists, use it instead.
+        File backupFile = new File(directory, JOURNAL_FILE_BACKUP);
+        if (backupFile.exists()) {
+            File journalFile = new File(directory, JOURNAL_FILE);
+            // If journal file also exists just delete backup file.
+            if (journalFile.exists()) {
+                backupFile.delete();
+            } else {
+                renameTo(backupFile, journalFile, false);
+            }
+        }
+
+        // Prefer to pick up where we left off.
+        DiskLruCache cache = new DiskLruCache(directory, appVersion, valueCount, maxSize);
+        if (cache.journalFile.exists()) {
+            try {
+                cache.readJournal();
+                cache.processJournal();
+                return cache;
+            } catch (IOException journalIsCorrupt) {
+                System.out
+                        .println("DiskLruCache "
+                                + directory
+                                + " is corrupt: "
+                                + journalIsCorrupt.getMessage()
+                                + ", removing");
+                cache.delete();
+            }
+        }
+
+        // Create a new empty cache.
+        directory.mkdirs();
+        cache = new DiskLruCache(directory, appVersion, valueCount, maxSize);
+        cache.rebuildJournal();
+        return cache;
+    }
+
+    private static void deleteIfExists(File file) throws IOException {
+        if (file.exists() && !file.delete()) {
+            throw new IOException();
+        }
+    }
+
+    private static void renameTo(File from, File to, boolean deleteDestination) throws IOException {
+        if (deleteDestination) {
+            deleteIfExists(to);
+        }
+        if (!from.renameTo(to)) {
+            throw new IOException();
+        }
+    }
+
+    private static String inputStreamToString(InputStream in) throws IOException {
+        return Util.readFully(new InputStreamReader(in, Util.UTF_8));
+    }
+
+    private void readJournal() throws IOException {
+        StrictLineReader reader = new StrictLineReader(new FileInputStream(journalFile), Util.US_ASCII);
+        try {
+            String magic = reader.readLine();
+            String version = reader.readLine();
+            String appVersionString = reader.readLine();
+            String valueCountString = reader.readLine();
+            String blank = reader.readLine();
+            if (!MAGIC.equals(magic)
+                    || !VERSION_1.equals(version)
+                    || !Integer.toString(appVersion).equals(appVersionString)
+                    || !Integer.toString(valueCount).equals(valueCountString)
+                    || !"".equals(blank)) {
+                throw new IOException("unexpected journal header: [" + magic + ", " + version + ", "
+                        + valueCountString + ", " + blank + "]");
+            }
+
+            int lineCount = 0;
+            while (true) {
+                try {
+                    readJournalLine(reader.readLine());
+                    lineCount++;
+                } catch (EOFException endOfJournal) {
+                    break;
+                }
+            }
+            redundantOpCount = lineCount - lruEntries.size();
+
+            // If we ended on a truncated line, rebuild the journal before appending to it.
+            if (reader.hasUnterminatedLine()) {
+                rebuildJournal();
+            } else {
+                journalWriter = new BufferedWriter(new OutputStreamWriter(
+                        new FileOutputStream(journalFile, true), Util.US_ASCII));
+            }
+        } finally {
+            Util.closeQuietly(reader);
+        }
+    }
+
+    private void readJournalLine(String line) throws IOException {
+        int firstSpace = line.indexOf(' ');
+        if (firstSpace == -1) {
+            throw new IOException("unexpected journal line: " + line);
+        }
+
+        int keyBegin = firstSpace + 1;
+        int secondSpace = line.indexOf(' ', keyBegin);
+        final String key;
+        if (secondSpace == -1) {
+            key = line.substring(keyBegin);
+            if (firstSpace == REMOVE.length() && line.startsWith(REMOVE)) {
+                lruEntries.remove(key);
+                return;
+            }
+        } else {
+            key = line.substring(keyBegin, secondSpace);
+        }
+
+        Entry entry = lruEntries.get(key);
+        if (entry == null) {
+            entry = new Entry(key);
+            lruEntries.put(key, entry);
+        }
+
+        if (secondSpace != -1 && firstSpace == CLEAN.length() && line.startsWith(CLEAN)) {
+            String[] parts = line.substring(secondSpace + 1).split(" ");
+            entry.readable = true;
+            entry.currentEditor = null;
+            entry.setLengths(parts);
+        } else if (secondSpace == -1 && firstSpace == DIRTY.length() && line.startsWith(DIRTY)) {
+            entry.currentEditor = new Editor(entry);
+        } else if (secondSpace == -1 && firstSpace == READ.length() && line.startsWith(READ)) {
+            // This work was already done by calling lruEntries.get().
+        } else {
+            throw new IOException("unexpected journal line: " + line);
+        }
+    }
+
+    /**
+     * Computes the initial size and collects garbage as a part of opening the
+     * cache. Dirty entries are assumed to be inconsistent and will be deleted.
+     */
+    private void processJournal() throws IOException {
+        deleteIfExists(journalFileTmp);
+        for (Iterator<Entry> i = lruEntries.values().iterator(); i.hasNext(); ) {
+            Entry entry = i.next();
+            if (entry.currentEditor == null) {
+                for (int t = 0; t < valueCount; t++) {
+                    size += entry.lengths[t];
+                }
+            } else {
+                entry.currentEditor = null;
+                for (int t = 0; t < valueCount; t++) {
+                    deleteIfExists(entry.getCleanFile(t));
+                    deleteIfExists(entry.getDirtyFile(t));
+                }
+                i.remove();
+            }
+        }
+    }
+
+    /**
+     * Creates a new journal that omits redundant information. This replaces the
+     * current journal if it exists.
+     */
+    private synchronized void rebuildJournal() throws IOException {
+        if (journalWriter != null) {
+            journalWriter.close();
+        }
+
+        try (Writer writer = new BufferedWriter(
+                new OutputStreamWriter(new FileOutputStream(journalFileTmp), Util.US_ASCII))) {
+            writer.write(MAGIC);
+            writer.write("\n");
+            writer.write(VERSION_1);
+            writer.write("\n");
+            writer.write(Integer.toString(appVersion));
+            writer.write("\n");
+            writer.write(Integer.toString(valueCount));
+            writer.write("\n");
+            writer.write("\n");
+
+            for (Entry entry : lruEntries.values()) {
+                if (entry.currentEditor != null) {
+                    writer.write(DIRTY + ' ' + entry.key + '\n');
+                } else {
+                    writer.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n');
+                }
+            }
+        }
+
+        if (journalFile.exists()) {
+            renameTo(journalFile, journalFileBackup, true);
+        }
+        renameTo(journalFileTmp, journalFile, false);
+        journalFileBackup.delete();
+
+        journalWriter = new BufferedWriter(
+                new OutputStreamWriter(new FileOutputStream(journalFile, true), Util.US_ASCII));
+    }
+
+    /**
+     * Return {@code true} if it contains the key
+     */
+    public synchronized boolean contain(String key) {
+        checkNotClosed();
+        validateKey(key);
+        Entry entry = lruEntries.get(key);
+        return entry != null && entry.readable;
+    }
+
+    /**
+     * Returns a snapshot of the entry named {@code key}, or null if it doesn't
+     * exist is not currently readable. If a value is returned, it is moved to
+     * the head of the LRU queue.
+     */
+    public synchronized Snapshot get(String key) throws IOException {
+        checkNotClosed();
+        validateKey(key);
+        Entry entry = lruEntries.get(key);
+        if (entry == null) {
+            return null;
+        }
+
+        if (!entry.readable) {
+            return null;
+        }
+
+        // Open all streams eagerly to guarantee that we see a single published
+        // snapshot. If we opened streams lazily then the streams could come
+        // from different edits.
+        InputStream[] ins = new InputStream[valueCount];
+        try {
+            for (int i = 0; i < valueCount; i++) {
+                ins[i] = new FileInputStream(entry.getCleanFile(i));
+            }
+        } catch (FileNotFoundException e) {
+            // A file must have been deleted manually!
+            for (int i = 0; i < valueCount; i++) {
+                if (ins[i] != null) {
+                    Util.closeQuietly(ins[i]);
+                } else {
+                    break;
+                }
+            }
+            return null;
+        }
+
+        redundantOpCount++;
+        journalWriter.append(READ + ' ').append(key).append(String.valueOf('\n'));
+        if (journalRebuildRequired()) {
+            executorService.submit(cleanupCallable);
+        }
+
+        return new Snapshot(key, entry.sequenceNumber, ins, entry.lengths);
+    }
+
+    /**
+     * Returns an editor for the entry named {@code key}, or null if another
+     * edit is in progress.
+     */
+    public Editor edit(String key) throws IOException {
+        return edit(key, ANY_SEQUENCE_NUMBER);
+    }
+
+    private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
+        checkNotClosed();
+        validateKey(key);
+        Entry entry = lruEntries.get(key);
+        if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER && (entry == null
+                || entry.sequenceNumber != expectedSequenceNumber)) {
+            return null; // Snapshot is stale.
+        }
+        if (entry == null) {
+            entry = new Entry(key);
+            lruEntries.put(key, entry);
+        } else if (entry.currentEditor != null) {
+            return null; // Another edit is in progress.
+        }
+
+        Editor editor = new Editor(entry);
+        entry.currentEditor = editor;
+
+        // Flush the journal before creating files to prevent file leaks.
+        journalWriter.write(DIRTY + ' ' + key + '\n');
+        journalWriter.flush();
+        return editor;
+    }
+
+    /**
+     * Returns the directory where this cache stores its data.
+     */
+    public File getDirectory() {
+        return directory;
+    }
+
+    /**
+     * Returns the maximum number of bytes that this cache should use to store
+     * its data.
+     */
+    public synchronized long getMaxSize() {
+        return maxSize;
+    }
+
+    /**
+     * Changes the maximum number of bytes the cache can store and queues a job
+     * to trim the existing store, if necessary.
+     */
+    public synchronized void setMaxSize(long maxSize) {
+        this.maxSize = maxSize;
+        executorService.submit(cleanupCallable);
+    }
+
+    /**
+     * Returns the number of bytes currently being used to store the values in
+     * this cache. This may be greater than the max size if a background
+     * deletion is pending.
+     */
+    public synchronized long size() {
+        return size;
+    }
+
+    private synchronized void completeEdit(Editor editor, boolean success) throws IOException {
+        Entry entry = editor.entry;
+        if (entry.currentEditor != editor) {
+            throw new IllegalStateException();
+        }
+
+        // If this edit is creating the entry for the first time, every index must have a value.
+        if (success && !entry.readable) {
+            for (int i = 0; i < valueCount; i++) {
+                if (!editor.written[i]) {
+                    editor.abort();
+                    throw new IllegalStateException("Newly created entry didn't create value for index " + i);
+                }
+                if (!entry.getDirtyFile(i).exists()) {
+                    editor.abort();
+                    return;
+                }
+            }
+        }
+
+        for (int i = 0; i < valueCount; i++) {
+            File dirty = entry.getDirtyFile(i);
+            if (success) {
+                if (dirty.exists()) {
+                    File clean = entry.getCleanFile(i);
+                    dirty.renameTo(clean);
+                    long oldLength = entry.lengths[i];
+                    long newLength = clean.length();
+                    entry.lengths[i] = newLength;
+                    size = size - oldLength + newLength;
+                }
+            } else {
+                deleteIfExists(dirty);
+            }
+        }
+
+        redundantOpCount++;
+        entry.currentEditor = null;
+        if (entry.readable | success) {
+            entry.readable = true;
+            journalWriter.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n');
+            if (success) {
+                entry.sequenceNumber = nextSequenceNumber++;
+            }
+        } else {
+            lruEntries.remove(entry.key);
+            journalWriter.write(REMOVE + ' ' + entry.key + '\n');
+        }
+        journalWriter.flush();
+
+        if (size > maxSize || journalRebuildRequired()) {
+            executorService.submit(cleanupCallable);
+        }
+    }
+
+    /**
+     * We only rebuild the journal when it will halve the size of the journal
+     * and eliminate at least 2000 ops.
+     */
+    private boolean journalRebuildRequired() {
+        final int redundantOpCompactThreshold = 2000;
+        return redundantOpCount >= redundantOpCompactThreshold //
+                && redundantOpCount >= lruEntries.size();
+    }
+
+    /**
+     * Drops the entry for {@code key} if it exists and can be removed. Entries
+     * actively being edited cannot be removed.
+     *
+     * @return true if an entry was removed.
+     */
+    public synchronized boolean remove(String key) throws IOException {
+        checkNotClosed();
+        validateKey(key);
+        Entry entry = lruEntries.get(key);
+        if (entry == null || entry.currentEditor != null) {
+            return false;
+        }
+
+        for (int i = 0; i < valueCount; i++) {
+            File file = entry.getCleanFile(i);
+            if (file.exists() && !file.delete()) {
+                throw new IOException("failed to delete " + file);
+            }
+            size -= entry.lengths[i];
+            entry.lengths[i] = 0;
+        }
+
+        redundantOpCount++;
+        journalWriter.append(REMOVE + ' ').append(key).append(String.valueOf('\n'));
+        lruEntries.remove(key);
+
+        if (journalRebuildRequired()) {
+            executorService.submit(cleanupCallable);
+        }
+
+        return true;
+    }
+
+    /**
+     * Returns true if this cache has been closed.
+     */
+    public synchronized boolean isClosed() {
+        return journalWriter == null;
+    }
+
+    private void checkNotClosed() {
+        if (journalWriter == null) {
+            throw new IllegalStateException("cache is closed");
+        }
+    }
+
+    /**
+     * Force buffered operations to the filesystem.
+     */
+    public synchronized void flush() throws IOException {
+        checkNotClosed();
+        trimToSize();
+        journalWriter.flush();
+    }
+
+    /**
+     * Closes this cache. Stored values will remain on the filesystem.
+     */
+    public synchronized void close() throws IOException {
+        if (journalWriter == null) {
+            return; // Already closed.
+        }
+        for (Entry entry : new ArrayList<>(lruEntries.values())) {
+            if (entry.currentEditor != null) {
+                entry.currentEditor.abort();
+            }
+        }
+        trimToSize();
+        journalWriter.close();
+        journalWriter = null;
+    }
+
+    private void trimToSize() throws IOException {
+        while (size > maxSize) {
+            Map.Entry<String, Entry> toEvict = lruEntries.entrySet().iterator().next();
+            remove(toEvict.getKey());
+        }
+    }
+
+    /**
+     * Closes the cache and deletes all of its stored values. This will delete
+     * all files in the cache directory including files that weren't created by
+     * the cache.
+     */
+    public void delete() throws IOException {
+        close();
+        Util.deleteContents(directory);
+    }
+
+    private void validateKey(String key) {
+        Matcher matcher = LEGAL_KEY_PATTERN.matcher(key);
+        if (!matcher.matches()) {
+            throw new IllegalArgumentException("keys must match regex "
+                    + STRING_KEY_PATTERN + ": \"" + key + "\"");
+        }
+    }
+
+    /**
+     * A snapshot of the values for an entry.
+     */
+    public final class Snapshot implements Closeable {
+        private final String key;
+        private final long sequenceNumber;
+        private final InputStream[] ins;
+        private final long[] lengths;
+
+        private Snapshot(String key, long sequenceNumber, InputStream[] ins, long[] lengths) {
+            this.key = key;
+            this.sequenceNumber = sequenceNumber;
+            this.ins = ins;
+            this.lengths = lengths;
+        }
+
+        /**
+         * Returns an editor for this snapshot's entry, or null if either the
+         * entry has changed since this snapshot was created or if another edit
+         * is in progress.
+         */
+        public Editor edit() throws IOException {
+            return DiskLruCache.this.edit(key, sequenceNumber);
+        }
+
+        /**
+         * Returns the unbuffered stream with the value for {@code index}.
+         */
+        public InputStream getInputStream(int index) {
+            return ins[index];
+        }
+
+        /**
+         * Returns the string value for {@code index}.
+         */
+        public String getString(int index) throws IOException {
+            return inputStreamToString(getInputStream(index));
+        }
+
+        /**
+         * Returns the byte length of the value for {@code index}.
+         */
+        public long getLength(int index) {
+            return lengths[index];
+        }
+
+        public void close() {
+            for (InputStream in : ins) {
+                Util.closeQuietly(in);
+            }
+        }
+    }
+
+    /**
+     * Edits the values for an entry.
+     */
+    public final class Editor {
+        private final Entry entry;
+        private final boolean[] written;
+        private boolean hasErrors;
+        private boolean committed;
+
+        private Editor(Entry entry) {
+            this.entry = entry;
+            this.written = (entry.readable) ? null : new boolean[valueCount];
+        }
+
+        /**
+         * Returns an unbuffered input stream to read the last committed value,
+         * or null if no value has been committed.
+         */
+        public InputStream newInputStream(int index) {
+            synchronized (DiskLruCache.this) {
+                if (entry.currentEditor != this) {
+                    throw new IllegalStateException();
+                }
+                if (!entry.readable) {
+                    return null;
+                }
+                try {
+                    return new FileInputStream(entry.getCleanFile(index));
+                } catch (FileNotFoundException e) {
+                    return null;
+                }
+            }
+        }
+
+        /**
+         * Returns the last committed value as a string, or null if no value
+         * has been committed.
+         */
+        public String getString(int index) throws IOException {
+            InputStream in = newInputStream(index);
+            return in != null ? inputStreamToString(in) : null;
+        }
+
+        /**
+         * Returns a new unbuffered output stream to write the value at
+         * {@code index}. If the underlying output stream encounters errors
+         * when writing to the filesystem, this edit will be aborted when
+         * {@link #commit} is called. The returned output stream does not throw
+         * IOExceptions.
+         */
+        public OutputStream newOutputStream(int index) throws IOException {
+            if (index < 0 || index >= valueCount) {
+                throw new IllegalArgumentException("Expected index " + index + " to "
+                        + "be greater than 0 and less than the maximum value count "
+                        + "of " + valueCount);
+            }
+            synchronized (DiskLruCache.this) {
+                if (entry.currentEditor != this) {
+                    throw new IllegalStateException();
+                }
+                if (!entry.readable) {
+                    written[index] = true;
+                }
+                File dirtyFile = entry.getDirtyFile(index);
+                FileOutputStream outputStream;
+                try {
+                    outputStream = new FileOutputStream(dirtyFile);
+                } catch (FileNotFoundException e) {
+                    // Attempt to recreate the cache directory.
+                    directory.mkdirs();
+                    try {
+                        outputStream = new FileOutputStream(dirtyFile);
+                    } catch (FileNotFoundException e2) {
+                        // We are unable to recover. Silently eat the writes.
+                        return NULL_OUTPUT_STREAM;
+                    }
+                }
+                return new FaultHidingOutputStream(outputStream);
+            }
+        }
+
+        /**
+         * Sets the value at {@code index} to {@code value}.
+         */
+        public void set(int index, String value) throws IOException {
+            Writer writer = null;
+            try {
+                writer = new OutputStreamWriter(newOutputStream(index), Util.UTF_8);
+                writer.write(value);
+            } finally {
+                Util.closeQuietly(writer);
+            }
+        }
+
+        /**
+         * Commits this edit so it is visible to readers.  This releases the
+         * edit lock so another edit may be started on the same key.
+         */
+        public void commit() throws IOException {
+            if (hasErrors) {
+                completeEdit(this, false);
+                remove(entry.key); // The previous entry is stale.
+            } else {
+                completeEdit(this, true);
+            }
+            committed = true;
+        }
+
+        /**
+         * Aborts this edit. This releases the edit lock so another edit may be
+         * started on the same key.
+         */
+        public void abort() throws IOException {
+            completeEdit(this, false);
+        }
+
+        public void abortUnlessCommitted() {
+            if (!committed) {
+                try {
+                    abort();
+                } catch (IOException ignored) {
+                }
+            }
+        }
+
+        private class FaultHidingOutputStream extends FilterOutputStream {
+            private FaultHidingOutputStream(OutputStream out) {
+                super(out);
+            }
+
+            @Override
+            public void write(int oneByte) {
+                try {
+                    out.write(oneByte);
+                } catch (IOException e) {
+                    hasErrors = true;
+                }
+            }
+
+            @Override
+            public void write(byte[] buffer, int offset, int length) {
+                try {
+                    out.write(buffer, offset, length);
+                } catch (IOException e) {
+                    hasErrors = true;
+                }
+            }
+
+            @Override
+            public void close() {
+                try {
+                    out.close();
+                } catch (IOException e) {
+                    hasErrors = true;
+                }
+            }
+
+            @Override
+            public void flush() {
+                try {
+                    out.flush();
+                } catch (IOException e) {
+                    hasErrors = true;
+                }
+            }
+        }
+    }
+
+    private final class Entry {
+        private final String key;
+
+        /**
+         * Lengths of this entry's files.
+         */
+        private final long[] lengths;
+
+        /**
+         * True if this entry has ever been published.
+         */
+        private boolean readable;
+
+        /**
+         * The ongoing edit or null if this entry is not being edited.
+         */
+        private Editor currentEditor;
+
+        /**
+         * The sequence number of the most recently committed edit to this entry.
+         */
+        private long sequenceNumber;
+
+        private Entry(String key) {
+            this.key = key;
+            this.lengths = new long[valueCount];
+        }
+
+        public String getLengths() {
+            StringBuilder result = new StringBuilder();
+            for (long size : lengths) {
+                result.append(' ').append(size);
+            }
+            return result.toString();
+        }
+
+        /**
+         * Set lengths using decimal numbers like "10123".
+         */
+        private void setLengths(String[] strings) throws IOException {
+            if (strings.length != valueCount) {
+                throw invalidLengths(strings);
+            }
+
+            try {
+                for (int i = 0; i < strings.length; i++) {
+                    lengths[i] = Long.parseLong(strings[i]);
+                }
+            } catch (NumberFormatException e) {
+                throw invalidLengths(strings);
+            }
+        }
+
+        private IOException invalidLengths(String[] strings) throws IOException {
+            throw new IOException("unexpected journal line: " + java.util.Arrays.toString(strings));
+        }
+
+        public File getCleanFile(int i) {
+            return new File(directory, key + "." + i);
+        }
+
+        public File getDirtyFile(int i) {
+            return new File(directory, key + "." + i + ".tmp");
+        }
+    }
+
+
+}
@@ -0,0 +1,522 @@
+/*
+ * Copyright 2015-2016 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.beerbelly;
+
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.hippo.streampipe.InputStreamPipe;
+import com.hippo.streampipe.OutputStreamPipe;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+public class SimpleDiskCache {
+
+    private static final String TAG = SimpleDiskCache.class.getSimpleName();
+
+    /**
+     * Disk cache is free
+     */
+    private static final int STATE_DISK_CACHE_NONE = 0;
+
+    /**
+     * Disk cache is flushing or clearing
+     */
+    private static final int STATE_DISK_CACHE_IN_USE = 1;
+
+    /**
+     * Disk cache is reading or writing
+     */
+    private static final int STATE_DISK_CACHE_BUSY = 2;
+
+    private final File mCacheDir;
+    private final int mSize;
+    @NonNull
+    private final Map<String, CounterLock> mLockMap = new HashMap<>();
+    @NonNull
+    private final LockPool mLockPool = new LockPool();
+    private int mDiskCacheState;
+    @Nullable
+    private DiskLruCache mDiskLruCache;
+
+    public SimpleDiskCache(File cacheDir, int size) {
+        mCacheDir = cacheDir;
+        mSize = size;
+
+        try {
+            init();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * A hashing method that changes a string (like a URL) into a hash suitable
+     * for using as a disk filename.
+     *
+     * @param key The key used to store the file
+     */
+    private static String hashKeyForDisk(final String key) {
+        String cacheKey;
+        try {
+            final MessageDigest digest = MessageDigest.getInstance("MD5");
+            digest.update(key.getBytes());
+            cacheKey = bytesToHexString(digest.digest());
+        } catch (final NoSuchAlgorithmException e) {
+            cacheKey = String.valueOf(key.hashCode());
+        }
+        return cacheKey;
+    }
+
+    /**
+     * http://stackoverflow.com/questions/332079
+     *
+     * @param bytes The bytes to convert.
+     * @return A {@link String} converted from the bytes of a hashable key used
+     * to store a filename on the disk, to hex digits.
+     */
+    private static String bytesToHexString(final byte[] bytes) {
+        final StringBuilder builder = new StringBuilder();
+        for (final byte b : bytes) {
+            final String hex = Integer.toHexString(0xFF & b);
+            if (hex.length() == 1) {
+                builder.append('0');
+            }
+            builder.append(hex);
+        }
+        return builder.toString();
+    }
+
+    public synchronized boolean isValid() {
+        return mDiskLruCache != null;
+    }
+
+    private synchronized void init() throws IOException {
+        if (!isValid()) {
+            mDiskLruCache = DiskLruCache.open(mCacheDir, 1, 1, mSize);
+        }
+    }
+
+    public synchronized long size() {
+        if (null != mDiskLruCache) {
+            return mDiskLruCache.size();
+        } else {
+            return -1L;
+        }
+    }
+
+    public synchronized void flush() {
+        // Wait for cache available
+        while (mDiskCacheState != STATE_DISK_CACHE_NONE) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+        mDiskCacheState = STATE_DISK_CACHE_BUSY;
+
+        if (null != mDiskLruCache) {
+            try {
+                mDiskLruCache.flush();
+            } catch (IOException e) {
+                Log.e(TAG, "SimpleDiskCache flush", e);
+            }
+        }
+
+        mDiskCacheState = STATE_DISK_CACHE_NONE;
+        notifyAll();
+    }
+
+    public synchronized boolean clear() {
+        boolean result = true;
+        if (null == mDiskLruCache) {
+            return false;
+        }
+
+        // Wait for cache available
+        while (mDiskCacheState != STATE_DISK_CACHE_NONE) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+        mDiskCacheState = STATE_DISK_CACHE_BUSY;
+
+        try {
+            mDiskLruCache.delete();
+        } catch (IOException e) {
+            Log.e(TAG, "SimpleDiskCache clearCache", e);
+        }
+        mDiskLruCache = null;
+        try {
+            init();
+        } catch (IOException e) {
+            Log.e(TAG, "SimpleDiskCache init", e);
+            result = false;
+        }
+
+        mDiskCacheState = STATE_DISK_CACHE_NONE;
+        notifyAll();
+        return result;
+    }
+
+    private synchronized CounterLock obtainLock(String key) {
+        // Wait for clear over
+        while (mDiskCacheState == STATE_DISK_CACHE_BUSY) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                // Empty
+            }
+        }
+        mDiskCacheState = STATE_DISK_CACHE_IN_USE;
+
+        // Get lock from key
+        CounterLock lock;
+        lock = mLockMap.get(key);
+        if (lock == null) {
+            lock = mLockPool.get();
+            mLockMap.put(key, lock);
+        }
+        lock.obtain();
+
+        return lock;
+    }
+
+    private synchronized void releaseLock(String key, CounterLock lock) {
+        lock.release();
+        if (lock.isFree()) {
+            mLockMap.remove(key);
+            mLockPool.push(lock);
+        }
+
+        if (mLockMap.isEmpty()) {
+            mDiskCacheState = STATE_DISK_CACHE_NONE;
+            notifyAll();
+        }
+    }
+
+    public boolean contain(@NonNull String key) {
+        String diskKey = hashKeyForDisk(key);
+        CounterLock lock = obtainLock(diskKey);
+        if (null == mDiskLruCache) {
+            releaseLock(diskKey, lock);
+            return false;
+        }
+        lock.readLock().lock();
+
+        boolean result = mDiskLruCache.contain(diskKey);
+
+        lock.readLock().unlock();
+        releaseLock(diskKey, lock);
+
+        return result;
+    }
+
+    public boolean remove(@NonNull String key) {
+        String diskKey = hashKeyForDisk(key);
+        CounterLock lock = obtainLock(diskKey);
+        if (null == mDiskLruCache) {
+            releaseLock(diskKey, lock);
+            return false;
+        }
+        lock.writeLock().lock();
+
+        boolean result;
+        try {
+            result = mDiskLruCache.remove(diskKey);
+        } catch (IOException e) {
+            e.printStackTrace();
+            result = false;
+        }
+
+        lock.writeLock().unlock();
+        releaseLock(diskKey, lock);
+
+        return result;
+    }
+
+    public boolean put(@NonNull String key, @NonNull InputStream is) {
+        String diskKey = hashKeyForDisk(key);
+        CounterLock lock = obtainLock(diskKey);
+        if (null == mDiskLruCache) {
+            releaseLock(diskKey, lock);
+            return false;
+        }
+        lock.writeLock().lock();
+
+        boolean result = false;
+        if (isValid()) {
+            result = putToDisk(diskKey, is);
+        }
+
+        lock.writeLock().unlock();
+        releaseLock(diskKey, lock);
+
+        return result;
+    }
+
+    private boolean putToDisk(String key, InputStream is) {
+        DiskLruCache.Editor editor = null;
+        OutputStream os = null;
+        boolean completeEdit = false;
+        try {
+            //noinspection ConstantConditions
+            editor = mDiskLruCache.edit(key);
+            if (editor == null) {
+                // The editor is in progress
+                return false;
+            }
+
+            os = editor.newOutputStream(0);
+            if (os != null) {
+                Util.copy(is, os);
+                completeEdit = true;
+                editor.commit();
+                return true;
+            } else {
+                // Can't get OutputStream
+                completeEdit = true;
+                editor.abort();
+                return false;
+            }
+        } catch (IOException e) {
+            Util.closeQuietly(os);
+            try {
+                if (!completeEdit && editor != null) {
+                    editor.abort();
+                }
+            } catch (IOException ignored) {
+            }
+            return false;
+        }
+    }
+
+    /**
+     * @param key the key of the target
+     * @return the InputStreamPipe, <code>null</code> for missing
+     */
+    @Nullable
+    public InputStreamPipe getInputStreamPipe(@NonNull String key) {
+        if (contain(key)) {
+            String diskKey = hashKeyForDisk(key);
+            return new CacheInputStreamPipe(diskKey);
+        } else {
+            return null;
+        }
+    }
+
+    @NonNull
+    public OutputStreamPipe getOutputStreamPipe(@NonNull String key) {
+        String diskKey = hashKeyForDisk(key);
+        return new CacheOutputStreamPipe(diskKey);
+    }
+
+    private class CacheInputStreamPipe implements InputStreamPipe {
+
+        private final String mKey;
+        private CounterLock mLock;
+        private DiskLruCache.Snapshot mCurrentSnapshot;
+
+        private CacheInputStreamPipe(String key) {
+            mKey = key;
+        }
+
+        @Override
+        public void obtain() {
+            if (mLock == null) {
+                mLock = obtainLock(mKey);
+                mLock.readLock().lock();
+            }
+        }
+
+        @Override
+        public void release() {
+            if (mCurrentSnapshot != null) {
+                throw new IllegalStateException("Please close it first");
+            }
+
+            if (mLock != null) {
+                mLock.readLock().unlock();
+                releaseLock(mKey, mLock);
+                mLock = null;
+            }
+        }
+
+        @Override
+        public @NonNull
+        InputStream open() throws IOException {
+            if (mLock == null) {
+                throw new IllegalStateException("Please obtain it first");
+            }
+            if (mCurrentSnapshot != null) {
+                throw new IllegalStateException("Please close it before reopen");
+            }
+            if (null == mDiskLruCache) {
+                throw new IOException("Can't find disk lru cache");
+            }
+
+            DiskLruCache.Snapshot snapshot;
+            snapshot = mDiskLruCache.get(mKey);
+            if (snapshot == null) {
+                throw new IOException("Miss the key " + mKey);
+            }
+            mCurrentSnapshot = snapshot;
+            return snapshot.getInputStream(0);
+        }
+
+        @Override
+        public void close() {
+            Util.closeQuietly(mCurrentSnapshot);
+            mCurrentSnapshot = null;
+        }
+    }
+
+    private class CacheOutputStreamPipe implements OutputStreamPipe {
+
+        private final String mKey;
+        private CounterLock mLock;
+        private DiskLruCache.Editor mCurrentEditor;
+
+        private CacheOutputStreamPipe(String key) {
+            mKey = key;
+        }
+
+        @Override
+        public void obtain() {
+            if (mLock == null) {
+                mLock = obtainLock(mKey);
+                mLock.writeLock().lock();
+            }
+        }
+
+        @Override
+        public void release() {
+            if (mCurrentEditor != null) {
+                throw new IllegalStateException("Please close it first");
+            }
+
+            if (mLock != null) {
+                mLock.writeLock().unlock();
+                releaseLock(mKey, mLock);
+                mLock = null;
+            }
+        }
+
+        @Override
+        public @NonNull
+        OutputStream open() throws IOException {
+            if (mLock == null) {
+                throw new IllegalStateException("Please obtain it first");
+            }
+            if (mCurrentEditor != null) {
+                throw new IllegalStateException("Please close it before reopen");
+            }
+            if (null == mDiskLruCache) {
+                throw new IOException("Can't find disk lru cache");
+            }
+
+            DiskLruCache.Editor editor = mDiskLruCache.edit(mKey);
+            if (editor == null) {
+                throw new IOException("Miss the key " + mKey);
+            }
+
+            OutputStream os;
+            try {
+                os = editor.newOutputStream(0);
+                mCurrentEditor = editor;
+                return os;
+            } catch (IOException e) {
+                // Get trouble
+                try {
+                    editor.abort();
+                } catch (IOException ex) {
+                    // Ignore
+                }
+                throw e;
+            }
+        }
+
+        @Override
+        public void close() {
+            if (mCurrentEditor != null) {
+                try {
+                    mCurrentEditor.commit();
+                } catch (IOException e) {
+                    // Empty
+                }
+                mCurrentEditor = null;
+            }
+        }
+    }
+
+    private class CounterLock extends ReentrantReadWriteLock {
+
+        private int mCount;
+
+        public boolean isFree() {
+            return mCount == 0;
+        }
+
+        public void release() {
+            if (--mCount < 0) {
+                throw new IllegalStateException("Release time is more than occupy time");
+            }
+        }
+
+        public void obtain() {
+            ++mCount;
+        }
+    }
+
+    private class LockPool {
+
+        private static final int MAX_SIZE = 10;
+
+        private final CounterLock[] mArray = new CounterLock[MAX_SIZE];
+        private final int mMaxSize = MAX_SIZE;
+        private int mSize;
+
+        public void push(CounterLock lock) {
+            if (lock != null && mSize < mMaxSize) {
+                mArray[mSize++] = lock;
+            }
+        }
+
+        public CounterLock get() {
+            if (mSize > 0) {
+                CounterLock lock = mArray[--mSize];
+                mArray[mSize] = null;
+                return lock;
+            } else {
+                return new CounterLock();
+            }
+        }
+    }
+}
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2012 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 com.hippo.beerbelly;
+
+import androidx.annotation.NonNull;
+
+import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.Charset;
+
+/**
+ * Buffers input from an {@link InputStream} for reading lines.
+ *
+ * <p>This class is used for buffered reading of lines. For purposes of this class, a line ends
+ * with "\n" or "\r\n". End of input is reported by throwing {@code EOFException}. Unterminated
+ * line at end of input is invalid and will be ignored, the caller may use {@code
+ * hasUnterminatedLine()} to detect it after catching the {@code EOFException}.
+ *
+ * <p>This class is intended for reading input that strictly consists of lines, such as line-based
+ * cache entries or cache journal. Unlike the {@link java.io.BufferedReader} which in conjunction
+ * with {@link java.io.InputStreamReader} provides similar functionality, this class uses different
+ * end-of-input reporting and a more restrictive definition of a line.
+ *
+ * <p>This class supports only charsets that encode '\r' and '\n' as a single byte with value 13
+ * and 10, respectively, and the representation of no other character contains these values.
+ * We currently check in constructor that the charset is one of US-ASCII, UTF-8 and ISO-8859-1.
+ * The default charset is US_ASCII.
+ */
+class StrictLineReader implements Closeable {
+    private static final byte CR = (byte) '\r';
+    private static final byte LF = (byte) '\n';
+
+    private final InputStream in;
+    private final Charset charset;
+
+    /*
+     * Buffered data is stored in {@code buf}. As long as no exception occurs, 0 <= pos <= end
+     * and the data in the range [pos, end) is buffered for reading. At end of input, if there is
+     * an unterminated line, we set end == -1, otherwise end == pos. If the underlying
+     * {@code InputStream} throws an {@code IOException}, end may remain as either pos or -1.
+     */
+    private byte[] buf;
+    private int pos;
+    private int end;
+
+    /**
+     * Constructs a new {@code LineReader} with the specified charset and the default capacity.
+     *
+     * @param in      the {@code InputStream} to read data from.
+     * @param charset the charset used to decode data. Only US-ASCII, UTF-8 and ISO-8859-1 are
+     *                supported.
+     * @throws NullPointerException     if {@code in} or {@code charset} is null.
+     * @throws IllegalArgumentException if the specified charset is not supported.
+     */
+    public StrictLineReader(InputStream in, Charset charset) {
+        this(in, 8192, charset);
+    }
+
+    /**
+     * Constructs a new {@code LineReader} with the specified capacity and charset.
+     *
+     * @param in       the {@code InputStream} to read data from.
+     * @param capacity the capacity of the buffer.
+     * @param charset  the charset used to decode data. Only US-ASCII, UTF-8 and ISO-8859-1 are
+     *                 supported.
+     * @throws NullPointerException     if {@code in} or {@code charset} is null.
+     * @throws IllegalArgumentException if {@code capacity} is negative or zero
+     *                                  or the specified charset is not supported.
+     */
+    public StrictLineReader(InputStream in, int capacity, Charset charset) {
+        if (in == null || charset == null) {
+            throw new NullPointerException();
+        }
+        if (capacity < 0) {
+            throw new IllegalArgumentException("capacity <= 0");
+        }
+        if (!(charset.equals(Util.US_ASCII))) {
+            throw new IllegalArgumentException("Unsupported encoding");
+        }
+
+        this.in = in;
+        this.charset = charset;
+        buf = new byte[capacity];
+    }
+
+    /**
+     * Closes the reader by closing the underlying {@code InputStream} and
+     * marking this reader as closed.
+     *
+     * @throws IOException for errors when closing the underlying {@code InputStream}.
+     */
+    public void close() throws IOException {
+        synchronized (in) {
+            if (buf != null) {
+                buf = null;
+                in.close();
+            }
+        }
+    }
+
+    /**
+     * Reads the next line. A line ends with {@code "\n"} or {@code "\r\n"},
+     * this end of line marker is not included in the result.
+     *
+     * @return the next line from the input.
+     * @throws IOException  for underlying {@code InputStream} errors.
+     * @throws EOFException for the end of source stream.
+     */
+    public String readLine() throws IOException {
+        synchronized (in) {
+            if (buf == null) {
+                throw new IOException("LineReader is closed");
+            }
+
+            // Read more data if we are at the end of the buffered data.
+            // Though it's an error to read after an exception, we will let {@code fillBuf()}
+            // throw again if that happens; thus we need to handle end == -1 as well as end == pos.
+            if (pos >= end) {
+                fillBuf();
+            }
+            // Try to find LF in the buffered data and return the line if successful.
+            for (int i = pos; i != end; ++i) {
+                if (buf[i] == LF) {
+                    int lineEnd = (i != pos && buf[i - 1] == CR) ? i - 1 : i;
+                    String res = new String(buf, pos, lineEnd - pos, charset.name());
+                    pos = i + 1;
+                    return res;
+                }
+            }
+
+            // Let's anticipate up to 80 characters on top of those already read.
+            ByteArrayOutputStream out = new ByteArrayOutputStream(end - pos + 80) {
+                @NonNull
+                @Override
+                public String toString() {
+                    int length = (count > 0 && buf[count - 1] == CR) ? count - 1 : count;
+                    try {
+                        return new String(buf, 0, length, charset.name());
+                    } catch (UnsupportedEncodingException e) {
+                        throw new AssertionError(e); // Since we control the charset this will never happen.
+                    }
+                }
+            };
+
+            while (true) {
+                out.write(buf, pos, end - pos);
+                // Mark unterminated line in case fillBuf throws EOFException or IOException.
+                end = -1;
+                fillBuf();
+                // Try to find LF in the buffered data and return the line if successful.
+                for (int i = pos; i != end; ++i) {
+                    if (buf[i] == LF) {
+                        if (i != pos) {
+                            out.write(buf, pos, i - pos);
+                        }
+                        pos = i + 1;
+                        return out.toString();
+                    }
+                }
+            }
+        }
+    }
+
+    public boolean hasUnterminatedLine() {
+        return end == -1;
+    }
+
+    /**
+     * Reads new input data into the buffer. Call only with pos == end or end == -1,
+     * depending on the desired outcome if the function throws.
+     */
+    private void fillBuf() throws IOException {
+        int result = in.read(buf, 0, buf.length);
+        if (result == -1) {
+            throw new EOFException();
+        }
+        pos = 0;
+        end = result;
+    }
+}
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.beerbelly;
+
+import java.io.Closeable;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Junk drawer of utility methods.
+ */
+final class Util {
+    static final Charset US_ASCII = StandardCharsets.US_ASCII;
+    static final Charset UTF_8 = StandardCharsets.UTF_8;
+    private static final int EOF = -1;
+    private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
+
+    private Util() {
+    }
+
+    static String readFully(Reader reader) throws IOException {
+        try (reader) {
+            StringWriter writer = new StringWriter();
+            char[] buffer = new char[1024];
+            int count;
+            while ((count = reader.read(buffer)) != -1) {
+                writer.write(buffer, 0, count);
+            }
+            return writer.toString();
+        }
+    }
+
+    /**
+     * Deletes the contents of {@code dir}. Throws an IOException if any file
+     * could not be deleted, or if {@code dir} is not a readable directory.
+     */
+    static void deleteContents(File dir) throws IOException {
+        File[] files = dir.listFiles();
+        if (files == null) {
+            throw new IOException("not a readable directory: " + dir);
+        }
+        for (File file : files) {
+            if (file.isDirectory()) {
+                deleteContents(file);
+            }
+            if (!file.delete()) {
+                throw new IOException("failed to delete file: " + file);
+            }
+        }
+    }
+
+    static void closeQuietly(/*Auto*/Closeable closeable) {
+        if (closeable != null) {
+            try {
+                closeable.close();
+            } catch (RuntimeException rethrown) {
+                throw rethrown;
+            } catch (Exception ignored) {
+            }
+        }
+    }
+
+    /**
+     * Copy bytes from an <code>InputStream</code> to an
+     * <code>OutputStream</code>.
+     *
+     * @param input  the InputStream
+     * @param output the OutputStream
+     * @return the number of bytes copied
+     */
+    public static long copy(InputStream input, OutputStream output)
+            throws IOException {
+        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
+        long count = 0;
+        int n;
+        while (EOF != (n = input.read(buffer))) {
+            output.write(buffer, 0, n);
+            count += n;
+        }
+        return count;
+    }
+}
@@ -26,7 +26,6 @@ import com.hippo.conaco.ConacoTask;
 import com.hippo.conaco.Unikery;
 import com.hippo.image.ImageBitmap;
 import com.hippo.image.ImageDrawable;
-import com.hippo.image.RecycledException;
 import com.hippo.widget.ObservedTextView;

 public class UnikeryDrawable extends WrapDrawable implements Unikery<ImageBitmap>,
@@ -127,7 +126,7 @@ public class UnikeryDrawable extends WrapDrawable implements Unikery<ImageBitmap
        ImageDrawable drawable;
        try {
            drawable = new ImageDrawable(value);
-        } catch (RecycledException e) {
+        } catch (Exception e) {
            Log.d(TAG, "The ImageBitmap is recycled", e);
            return false;
        }
@@ -16,9 +16,7 @@

 package com.hippo.easyrecyclerview;

-import android.annotation.SuppressLint;
 import android.content.Context;
-import android.hardware.SensorManager;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.AttributeSet;
@@ -26,33 +24,20 @@ import android.util.SparseBooleanArray;
 import android.view.ActionMode;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewConfiguration;
 import android.widget.Checkable;

 import androidx.annotation.NonNull;
 import androidx.collection.LongSparseArray;
-import androidx.core.view.ViewCompat;
-import androidx.recyclerview.widget.BridgeRecyclerView;
-import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
-import androidx.recyclerview.widget.StaggeredGridLayoutManager;

-import com.hippo.ehviewer.Settings;
 import com.hippo.yorozuya.NumberUtils;

 /**
 * Add setChoiceMode for RecyclerView
 */
 // Get some code from twoway-view and AbsListView.
-public class EasyRecyclerView extends BridgeRecyclerView {
-
-    /**
-     * Represents an invalid position. All valid positions are in the range 0 to 1 less than the
-     * number of items in the current adapter.
-     */
-    public static final int INVALID_POSITION = -1;
+public class EasyRecyclerView extends RecyclerView {

    /**
     * Normal list that does not indicate choices
@@ -78,14 +63,8 @@ public class EasyRecyclerView extends BridgeRecyclerView {
     * The list allows multiple choices in custom action
     */
    public static final int CHOICE_MODE_MULTIPLE_CUSTOM = 4;
-    private static final float DECELERATION_RATE = (float) (Math.log(0.78) / Math.log(0.9));
    // Fling friction
-    private final float mFlingFriction = ViewConfiguration.getScrollFriction();
    public float pageScrollThreshold;
-    double flingMoveDistanceX;
-    double flingMoveDistanceY;
-    boolean canScrollVertical = true;
-    boolean canScrollHorizontally = true;
    /**
     * Wrapper for the multiple choice mode callback; AbsListView needs to perform
     * a few extra actions around what application code does.
@@ -131,30 +110,20 @@ public class EasyRecyclerView extends BridgeRecyclerView {
    private LongSparseArray<Integer> mCheckedIdStates;

    private Adapter<?> mAdapter;
-    private boolean isScrollBefore = false;
-    private int initialTouchX;
-    private int initialTouchY;
-    // A context-specific coefficient adjusted to physical values.
-    private float mPhysicalCoeff;
-    private int defaultOverflowItemScrollKeep;
-    private boolean enableScroll = false;

    public EasyRecyclerView(Context context) {
        super(context);
        EasyRecyclerView.this.init(context);
-        setEnableScroll(!Settings.getEInkMode());
    }

    public EasyRecyclerView(Context context, AttributeSet attrs) {
        super(context, attrs);
        EasyRecyclerView.this.init(context);
-        setEnableScroll(!Settings.getEInkMode());
    }

    public EasyRecyclerView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        EasyRecyclerView.this.init(context);
-        setEnableScroll(!Settings.getEInkMode());
    }

    public static void setViewChecked(View view, boolean checked) {
@@ -202,18 +171,7 @@ public class EasyRecyclerView extends BridgeRecyclerView {
        }
    }

-    /**
-     * Returns the number of items currently selected. This will only be valid
-     * if the choice mode is not {@link #CHOICE_MODE_NONE} (default).
-     *
-     * <p>To determine the specific items that are currently selected, use one of
-     * the <code>getChecked*</code> methods.
-     *
-     * @return The number of items currently selected
-     * @see #getCheckedItemPosition()
-     * @see #getCheckedItemPositions()
-     * @see #getCheckedItemIds()
-     */
+
    public int getCheckedItemCount() {
        return mCheckedItemCount;
    }
@@ -237,22 +195,6 @@ public class EasyRecyclerView extends BridgeRecyclerView {
        return false;
    }

-    /**
-     * Returns the currently checked item. The result is only valid if the choice
-     * mode has been set to {@link #CHOICE_MODE_SINGLE}.
-     *
-     * @return The position of the currently checked item or
-     * {@link #INVALID_POSITION} if nothing is selected
-     * @see #setChoiceMode(int)
-     */
-    public int getCheckedItemPosition() {
-        if (mChoiceMode == CHOICE_MODE_SINGLE && mCheckStates != null && mCheckStates.size() == 1) {
-            return mCheckStates.keyAt(0);
-        }
-
-        return INVALID_POSITION;
-    }
-
    /**
     * Returns the set of checked items in the list. The result is only valid if
     * the choice mode has not been set to {@link #CHOICE_MODE_NONE}.
@@ -269,30 +211,6 @@ public class EasyRecyclerView extends BridgeRecyclerView {
        return null;
    }

-    /**
-     * Returns the set of checked items ids. The result is only valid if the
-     * choice mode has not been set to {@link #CHOICE_MODE_NONE} and the adapter
-     * has stable IDs. ({@link android.widget.ListAdapter#hasStableIds()} == {@code true})
-     *
-     * @return A new array which contains the id of each checked item in the
-     * list.
-     */
-    public long[] getCheckedItemIds() {
-        if (mChoiceMode == CHOICE_MODE_NONE || mCheckedIdStates == null || mAdapter == null) {
-            return new long[0];
-        }
-
-        final LongSparseArray<Integer> idStates = mCheckedIdStates;
-        final int count = idStates.size();
-        final long[] ids = new long[count];
-
-        for (int i = 0; i < count; i++) {
-            ids[i] = idStates.keyAt(i);
-        }
-
-        return ids;
-    }
-
    public boolean isInCustomChoice() {
        return mCustomChoice;
    }
@@ -475,14 +393,6 @@ public class EasyRecyclerView extends BridgeRecyclerView {
        updateOnScreenCheckedViews();
    }

-    /**
-     * @return The current choice mode
-     * @see #setChoiceMode(int)
-     */
-    public int getChoiceMode() {
-        return mChoiceMode;
-    }
-
    /**
     * Defines the choice behavior for the List. By default, Lists do not have any choice behavior
     * ({@link #CHOICE_MODE_NONE}). By setting the choiceMode to {@link #CHOICE_MODE_SINGLE}, the
@@ -518,24 +428,6 @@ public class EasyRecyclerView extends BridgeRecyclerView {
        }
    }

-    /**
-     * Set a {@link MultiChoiceModeListener} that will manage the lifecycle of the
-     * selection {@link android.view.ActionMode}. Only used when the choice mode is set to
-     * {@link #CHOICE_MODE_MULTIPLE_MODAL}.
-     *
-     * @param listener Listener that will manage the selection mode
-     * @see #setChoiceMode(int)
-     */
-    public void setMultiChoiceModeListener(MultiChoiceModeListener listener) {
-        if (mMultiChoiceModeCallback == null) {
-            mMultiChoiceModeCallback = new MultiChoiceModeWrapper();
-        }
-        mMultiChoiceModeCallback.setWrapped(listener);
-    }
-
-    /**
-     * @param listener
-     */
    public void setCustomCheckedListener(CustomChoiceListener listener) {
        mCustomChoiceListener = listener;
    }
@@ -556,299 +448,13 @@ public class EasyRecyclerView extends BridgeRecyclerView {

    private void init(Context context) {
        float scale = context.getResources().getDisplayMetrics().density;
-        final float ppi = scale * 160.0f;
-        mPhysicalCoeff = SensorManager.GRAVITY_EARTH // g (m/s^2)
-                * 39.37f // inch/meter
-                * ppi
-                * 0.84f; // look and feel tuning
+        // g (m/s^2)
+        // inch/meter
+        // A context-specific coefficient adjusted to physical values.
+        // look and feel tuning
        pageScrollThreshold = scale * 80;
    }

-    public void setPageScrollThreshold(float pageScrollThreshold) {
-        this.pageScrollThreshold = pageScrollThreshold;
-    }
-
-    @SuppressLint("ClickableViewAccessibility")
-    @Override
-    public boolean onTouchEvent(MotionEvent e) {
-        if (enableScroll) {
-            return super.onTouchEvent(e);
-        }
-        boolean superTouchResult = super.onTouchEvent(e);
-        if (superTouchResult) {
-            switch (e.getAction()) {
-                case MotionEvent.ACTION_DOWN:
-                    initialTouchX = (int) (e.getX() + 0.5f);
-                    initialTouchY = (int) (e.getY() + 0.5f);
-                    break;
-                case MotionEvent.ACTION_MOVE:
-                    if (initialTouchX < 0 || initialTouchY < 0) {
-                        initialTouchX = (int) (e.getX() + 0.5f);
-                        initialTouchY = (int) (e.getY() + 0.5f);
-                    }
-                    break;
-                case MotionEvent.ACTION_UP:
-                    if (isScrollBefore) {
-                        int moveDistanceX = (int) (initialTouchX - e.getX() + flingMoveDistanceX);
-                        int moveDistanceY = (int) (initialTouchY - e.getY() + flingMoveDistanceY);
-                        onTouchScroll(moveDistanceX, moveDistanceY);
-                        initialTouchX = initialTouchY = -1;
-                    }
-                    break;
-            }
-            isScrollBefore = getScrollState() == SCROLL_STATE_DRAGGING;
-        }
-        return superTouchResult;
-    }
-
-    @Override
-    public boolean scrollByInternal(int x, int y, MotionEvent ev, int type) {
-        if (enableScroll) {
-            return super.scrollByInternal(x, y, ev, type);
-        }
-        //disable drag scroll effect，e-ink screen don't need it
-        return false;
-    }
-
-    @Override
-    public boolean fling(int velocityX, int velocityY) {
-        if (enableScroll) {
-            return super.fling(velocityX, velocityY);
-        }
-        flingMoveDistanceX = getSplineFlingDistance(velocityX) * Math.signum(velocityX);
-        flingMoveDistanceY = getSplineFlingDistance(velocityY) * Math.signum(velocityY);
-        //disable fling scroll effect,e-ink screen don't need it
-        return false;
-    }
-
-    protected void onTouchScroll(int dx, int dy) {
-        canScrollVertical = true;
-        canScrollHorizontally = true;
-        LayoutManager layout = getLayoutManager();
-        if (layout != null) {
-            if (dy > pageScrollThreshold) {
-                if (canScrollVertical && layout.canScrollVertically()) {
-                    canScrollVertical = false;
-                    onScrollDown();
-                } else if (canScrollHorizontally && layout.canScrollHorizontally()) {
-                    canScrollHorizontally = false;
-                    onScrollRight();
-                }
-            } else if (dy < -pageScrollThreshold) {
-                if (canScrollVertical && layout.canScrollVertically()) {
-                    canScrollVertical = false;
-                    onScrollUp();
-                } else if (canScrollHorizontally && layout.canScrollHorizontally()) {
-                    canScrollHorizontally = false;
-                    onScrollLeft();
-                }
-            }
-
-            if (dx > pageScrollThreshold) {
-                if (canScrollVertical && layout.canScrollVertically()) {
-                    onScrollDown();
-                } else if (canScrollHorizontally && layout.canScrollHorizontally()) {
-                    onScrollRight();
-                }
-            } else if (dx < -pageScrollThreshold) {
-                if (canScrollVertical && layout.canScrollVertically()) {
-                    onScrollUp();
-                } else if (canScrollHorizontally && layout.canScrollHorizontally()) {
-                    onScrollLeft();
-                }
-            }
-        }
-    }
-
-    protected void onScrollLeft() {
-        LayoutManager layout = getLayoutManager();
-        if (layout instanceof LinearLayoutManager) {
-            LinearLayoutManager realLayout = (LinearLayoutManager) layout;
-            int firstVisiblePosition = realLayout.findFirstVisibleItemPosition();
-            ViewHolder firstVisibleItem = findViewHolderForAdapterPosition(firstVisiblePosition);
-
-            if (firstVisibleItem == null) {
-                return;
-            }
-
-            //when the item width overscreen, findLastCompletelyVisibleItemPosition always return NO_POSITION
-            if (firstVisibleItem.itemView.getMeasuredWidth() > getMeasuredWidth()) {
-                super.scrollByInternal(-getMeasuredWidth() + defaultOverflowItemScrollKeep, 0, null, ViewCompat.TYPE_TOUCH);
-            } else if (firstVisibleItem.itemView.getMeasuredWidth() == getMeasuredWidth()) {
-                super.scrollByInternal(-getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
-            } else {
-                super.scrollByInternal(firstVisibleItem.itemView.getRight() - getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
-            }
-        } else if (layout instanceof StaggeredGridLayoutManager) {
-            StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
-            int[] firstVisiblePosition = realLayout.findFirstVisibleItemPositions(null);
-            ViewHolder[] firstVisibleItems = new ViewHolder[firstVisiblePosition.length];
-            for (int i = 0; i < firstVisiblePosition.length; i++) {
-                firstVisibleItems[i] = findViewHolderForAdapterPosition(firstVisiblePosition[i]);
-            }
-            int scrollDistance = Integer.MAX_VALUE;
-            for (ViewHolder firstVisibleItem : firstVisibleItems) {
-                if (firstVisibleItem != null) {
-                    if (firstVisibleItem.itemView.getRight() < scrollDistance) {
-                        scrollDistance = firstVisibleItem.itemView.getRight();
-                    }
-                }
-            }
-
-            if (scrollDistance == getMeasuredWidth()) {
-                scrollDistance = 0;
-            }
-            super.scrollByInternal(scrollDistance - getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
-        }
-    }
-
-    protected void onScrollRight() {
-        LayoutManager layout = getLayoutManager();
-        if (layout instanceof LinearLayoutManager) {
-            LinearLayoutManager realLayout = (LinearLayoutManager) layout;
-            int lastVisiblePosition = realLayout.findLastVisibleItemPosition();
-            ViewHolder lastVisibleItem = findViewHolderForAdapterPosition(lastVisiblePosition);
-
-            if (lastVisibleItem == null) {
-                return;
-            }
-
-            //when the item width overflow screen, findLastCompletelyVisibleItemPosition always return NO_POSITION
-            if (lastVisibleItem.itemView.getMeasuredWidth() > getMeasuredWidth()) {
-                super.scrollByInternal(getMeasuredWidth() - defaultOverflowItemScrollKeep, 0, null, ViewCompat.TYPE_TOUCH);
-            } else if (lastVisibleItem.itemView.getMeasuredWidth() == getMeasuredWidth()) {
-                super.scrollByInternal(getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
-            } else {
-                super.scrollByInternal(lastVisibleItem.itemView.getLeft(), 0, null, ViewCompat.TYPE_TOUCH);
-            }
-        } else if (layout instanceof StaggeredGridLayoutManager) {
-            StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
-            int[] lastVisiblePosition = realLayout.findLastVisibleItemPositions(null);
-            ViewHolder[] lastVisibleItems = new ViewHolder[lastVisiblePosition.length];
-            for (int i = 0; i < lastVisiblePosition.length; i++) {
-                lastVisibleItems[i] = findViewHolderForAdapterPosition(lastVisiblePosition[i]);
-            }
-            int scrollDistance = 0;
-            for (ViewHolder lastVisibleItem : lastVisibleItems) {
-                if (lastVisibleItem != null) {
-                    if (lastVisibleItem.itemView.getLeft() > scrollDistance) {
-                        scrollDistance = lastVisibleItem.itemView.getLeft();
-                    }
-                }
-            }
-            if (scrollDistance == 0) {
-                scrollDistance = getMeasuredWidth();
-            }
-            super.scrollByInternal(scrollDistance, 0, null, ViewCompat.TYPE_TOUCH);
-        }
-    }
-
-    protected void onScrollUp() {
-        LayoutManager layout = getLayoutManager();
-        if (layout instanceof LinearLayoutManager) {
-            LinearLayoutManager realLayout = (LinearLayoutManager) layout;
-            int firstVisiblePosition = realLayout.findFirstVisibleItemPosition();
-            ViewHolder firstVisibleItem = findViewHolderForAdapterPosition(firstVisiblePosition);
-
-            if (firstVisibleItem == null) {
-                return;
-            }
-
-            //when the item height overscreen, findLastCompletelyVisibleItemPosition always return NO_POSITION
-            if (firstVisibleItem.itemView.getMeasuredHeight() > getMeasuredHeight()) {
-                super.scrollByInternal(0, -getMeasuredHeight() + defaultOverflowItemScrollKeep, null, ViewCompat.TYPE_TOUCH);
-            } else if (firstVisibleItem.itemView.getMeasuredHeight() == getMeasuredHeight()) {
-                super.scrollByInternal(0, -getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
-            } else {
-                super.scrollByInternal(0, firstVisibleItem.itemView.getBottom() - getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
-            }
-        } else if (layout instanceof StaggeredGridLayoutManager) {
-            StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
-            int[] firstVisiblePosition = realLayout.findFirstVisibleItemPositions(null);
-            ViewHolder[] firstVisibleItems = new ViewHolder[firstVisiblePosition.length];
-            for (int i = 0; i < firstVisiblePosition.length; i++) {
-                firstVisibleItems[i] = findViewHolderForAdapterPosition(firstVisiblePosition[i]);
-            }
-            int scrollDistance = Integer.MAX_VALUE;
-            for (ViewHolder firstVisibleItem : firstVisibleItems) {
-                if (firstVisibleItem != null) {
-                    if (firstVisibleItem.itemView.getBottom() < scrollDistance) {
-                        scrollDistance = firstVisibleItem.itemView.getBaseline();
-                    }
-                }
-            }
-            if (scrollDistance == getMeasuredWidth()) {
-                scrollDistance = 0;
-            }
-            super.scrollByInternal(0, scrollDistance - getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
-        }
-    }
-
-    protected void onScrollDown() {
-        LayoutManager layout = getLayoutManager();
-        if (layout instanceof LinearLayoutManager) {
-            LinearLayoutManager realLayout = (LinearLayoutManager) layout;
-            int lastVisiblePosition = realLayout.findLastVisibleItemPosition();
-            ViewHolder lastVisibleItem = findViewHolderForAdapterPosition(lastVisiblePosition);
-
-            if (lastVisibleItem == null) {
-                return;
-            }
-
-            //when the item height overflow screen, findLastCompletelyVisibleItemPosition always return NO_POSITION
-            if (lastVisibleItem.itemView.getMeasuredHeight() > getMeasuredHeight()) {
-                super.scrollByInternal(0, getMeasuredHeight() - defaultOverflowItemScrollKeep, null, ViewCompat.TYPE_TOUCH);
-            } else if (lastVisibleItem.itemView.getMeasuredHeight() == getMeasuredHeight()) {
-                super.scrollByInternal(0, getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
-            } else {
-                super.scrollByInternal(0, lastVisibleItem.itemView.getTop(), null, ViewCompat.TYPE_TOUCH);
-            }
-        } else if (layout instanceof StaggeredGridLayoutManager) {
-            StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
-            int[] lastVisiblePosition = realLayout.findLastVisibleItemPositions(null);
-            ViewHolder[] lastVisibleItems = new ViewHolder[lastVisiblePosition.length];
-            for (int i = 0; i < lastVisiblePosition.length; i++) {
-                lastVisibleItems[i] = findViewHolderForAdapterPosition(lastVisiblePosition[i]);
-            }
-            int scrollDistance = 0;
-            for (ViewHolder lastVisibleItem : lastVisibleItems) {
-                if (lastVisibleItem != null) {
-                    if (lastVisibleItem.itemView.getTop() > scrollDistance) {
-                        scrollDistance = lastVisibleItem.itemView.getTop();
-                    }
-                }
-            }
-            if (scrollDistance == 0) {
-                scrollDistance = getMeasuredHeight();
-            }
-            super.scrollByInternal(0, scrollDistance, null, ViewCompat.TYPE_TOUCH);
-        }
-    }
-
-    @Override
-    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-        super.onSizeChanged(w, h, oldw, oldh);
-        defaultOverflowItemScrollKeep = (int) (h * 0.05f);
-    }
-
-    private double getSplineDeceleration(int velocity) {
-        return Math.log(0.35f * Math.abs(velocity) / (mFlingFriction * mPhysicalCoeff));
-    }
-
-    private double getSplineFlingDistance(int velocity) {
-        final double l = getSplineDeceleration(velocity);
-        final double decelMinusOne = DECELERATION_RATE - 1.0;
-        return mFlingFriction * mPhysicalCoeff * Math.exp(DECELERATION_RATE / decelMinusOne * l);
-    }
-
-    public boolean isEnableScroll() {
-        return enableScroll;
-    }
-
-    public void setEnableScroll(boolean enableScroll) {
-        this.enableScroll = enableScroll;
-    }
-
    @Override
    public Parcelable onSaveInstanceState() {
        final SavedState ss = new SavedState(super.onSaveInstanceState());
@@ -1016,9 +622,6 @@ public class EasyRecyclerView extends BridgeRecyclerView {
    class MultiChoiceModeWrapper implements MultiChoiceModeListener {
        private MultiChoiceModeListener mWrapped;

-        public void setWrapped(MultiChoiceModeListener wrapped) {
-            mWrapped = wrapped;
-        }

        @SuppressWarnings("BooleanMethodIsAlwaysInverted")
        public boolean hasWrappedCallback() {
@@ -35,7 +35,12 @@ import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatDelegate;
 import androidx.collection.LruCache;
+import androidx.core.os.LocaleListCompat;
+import androidx.lifecycle.DefaultLifecycleObserver;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.ProcessLifecycleOwner;

 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.hippo.Native;
@@ -91,8 +96,6 @@ import okhttp3.OkHttpClient;
 import okhttp3.Request;
 import okhttp3.Response;
 import okhttp3.ResponseBody;
-import rikka.material.app.DayNightDelegate;
-import rikka.material.app.LocaleDelegate;

 public class EhApplication extends SceneApplication {

@@ -104,6 +107,8 @@ public class EhApplication extends SceneApplication {
    private static final boolean DEBUG_PRINT_IMAGE_COUNT = false;
    private static final long DEBUG_PRINT_INTERVAL = 3000L;

+    public static boolean locked = false;
+
    private static EhApplication instance;

    private final IntIdGenerator mIdGenerator = new IntIdGenerator();
@@ -297,14 +302,17 @@ public class EhApplication extends SceneApplication {
        return application.mFavouriteStatusRouter;
    }

-    @NonNull
-    public static String getDeveloperEmail() {
-        return "nekoworkshop$protonmail.com".replace('$', '@');
+    static class EhlifecycleObserver implements DefaultLifecycleObserver {
+        @Override
+        public void onPause(@NonNull LifecycleOwner owner) {
+            locked = true;
+        }
    }

    @SuppressLint("StaticFieldLeak")
    @Override
    public void onCreate() {
+        ProcessLifecycleOwner.get().getLifecycle().addObserver(new EhlifecycleObserver());
        instance = this;

        Thread.UncaughtExceptionHandler handler = Thread.getDefaultUncaughtExceptionHandler();
@@ -341,9 +349,8 @@ public class EhApplication extends SceneApplication {
            EhDB.mergeOldDB(this);
        }

-        LocaleDelegate.setDefaultLocale(Settings.getLocale());
-        DayNightDelegate.setApplicationContext(this);
-        DayNightDelegate.setDefaultNightMode(Settings.getTheme());
+        AppCompatDelegate.setApplicationLocales(LocaleListCompat.create(Settings.getLocale()));
+        AppCompatDelegate.setDefaultNightMode(Settings.getTheme());

        // Do io tasks in new thread
        //noinspection deprecation
@@ -86,7 +86,7 @@ public class Settings {
     ****** Advanced
     ********************/
    public static final String KEY_SAVE_PARSE_ERROR_BODY = "save_parse_error_body";
-    public static final String KEY_SECURITY = "security";
+    public static final String KEY_SECURITY = "require_unlock";
    public static final String DEFAULT_SECURITY = "";
    public static final String KEY_ENABLE_FINGERPRINT = "enable_fingerprint";
    public static final String KEY_READ_CACHE_SIZE = "read_cache_size";
@@ -457,14 +457,6 @@ public class Settings {
        putBoolean(KEY_SELECT_SITE, value);
    }

-    public static boolean getQuickSearchTip() {
-        return getBoolean(KEY_QUICK_SEARCH_TIP, DEFAULT_QUICK_SEARCH_TIP);
-    }
-
-    public static void putQuickSearchTip(boolean value) {
-        putBoolean(KEY_QUICK_SEARCH_TIP, value);
-    }
-
    public static int getTheme() {
        return getIntFromStr(KEY_THEME, DEFAULT_THEME);
    }
@@ -594,14 +586,6 @@ public class Settings {
        putString(KEY_EXCLUDED_LANGUAGES, value);
    }

-    public static void putEInkMode(boolean value) {
-        putBoolean(KEY_E_INK_MODE, value);
-    }
-
-    public static boolean getEInkMode() {
-        return getBoolean(KEY_E_INK_MODE, DEFAULT_E_INK_MODE);
-    }
-
    public static boolean getMeteredNetworkWarning() {
        return getBoolean(KEY_METERED_NETWORK_WARNING, DEFAULT_METERED_NETWORK_WARNING);
    }
@@ -1044,22 +1028,18 @@ public class Settings {
        return getBoolean(KEY_SAVE_CRASH_LOG, DEFAULT_SAVE_CRASH_LOG);
    }

-    public static String getSecurity() {
-        return getString(KEY_SECURITY, DEFAULT_SECURITY);
+    public static boolean getSecurity() {
+        return getBoolean(KEY_SECURITY, false);
    }

-    public static void putSecurity(String value) {
-        putString(KEY_SECURITY, value);
+    public static void putSecurity(boolean value) {
+        putBoolean(KEY_SECURITY, value);
    }

    public static boolean getEnableFingerprint() {
        return getBoolean(KEY_ENABLE_FINGERPRINT, true);
    }

-    public static void putEnableFingerprint(boolean value) {
-        putBoolean(KEY_ENABLE_FINGERPRINT, value);
-    }
-
    public static int getReadCacheSize() {
        return getIntFromStr(KEY_READ_CACHE_SIZE, DEFAULT_READ_CACHE_SIZE);
    }
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer;

 import android.view.View;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client;

 import android.util.Log;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client;

 import android.annotation.SuppressLint;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client.parser;

 import com.hippo.util.ExceptionUtils;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client.parser;

 import com.hippo.ehviewer.client.exception.EhException;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client.parser;

 import com.hippo.util.ExceptionUtils;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.client.parser;

 import org.json.JSONException;
@@ -29,7 +29,6 @@ import androidx.annotation.Nullable;
 import androidx.core.app.NotificationChannelCompat;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
-import androidx.core.content.ContextCompat;

 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
@@ -224,8 +223,6 @@ public class DownloadService extends Service implements DownloadManager.Download
                .setOngoing(true)
                .setAutoCancel(false)
                .setCategory(NotificationCompat.CATEGORY_PROGRESS)
-                .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
-                .setColorized(true)
                .addAction(R.drawable.v_pause_x24, getString(R.string.stat_download_action_stop_all), piStopAll)
                .setShowWhen(false)
                .setChannelId(CHANNEL_ID);
@@ -254,7 +251,6 @@ public class DownloadService extends Service implements DownloadManager.Download
        mDownloadedBuilder = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID)
                .setSmallIcon(android.R.drawable.stat_sys_download_done)
                .setContentTitle(getString(R.string.stat_download_done_title))
-                .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
                .setDeleteIntent(piClear)
                .setOngoing(false)
                .setAutoCancel(true)
@@ -273,7 +269,6 @@ public class DownloadService extends Service implements DownloadManager.Download
                .setContentText(getString(R.string.stat_509_alert_title))
                .setContentText(getString(R.string.stat_509_alert_text))
                .setStyle(new NotificationCompat.BigTextStyle().bigText(getString(R.string.stat_509_alert_text)))
-                .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
                .setAutoCancel(true)
                .setOngoing(false)
                .setCategory(NotificationCompat.CATEGORY_ERROR);
@@ -1,174 +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.gallery;
-
-import androidx.annotation.NonNull;
-
-import com.hippo.a7zip.ArchiveException;
-import com.hippo.a7zip.InArchive;
-import com.hippo.a7zip.PropID;
-import com.hippo.a7zip.PropType;
-import com.hippo.a7zip.SeekableInputStream;
-import com.hippo.unifile.UniRandomAccessFile;
-
-import java.io.Closeable;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.ArrayList;
-import java.util.List;
-
-class A7ZipArchive implements Closeable {
-
-    private final InArchive archive;
-
-    private A7ZipArchive(InArchive archive) {
-        this.archive = archive;
-    }
-
-    private static boolean isSupportedFilename(String name) {
-        for (String extension : GalleryProvider2.SUPPORT_IMAGE_EXTENSIONS) {
-            if (name.endsWith(extension)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    static A7ZipArchive create(UniRandomAccessFile file) throws ArchiveException {
-        SeekableInputStream store = new UniRandomAccessFileInStream(file);
-        InArchive archive = InArchive.open(store);
-        if ((archive.getArchivePropertyType(PropID.ENCRYPTED) == PropType.BOOL && archive.getArchiveBooleanProperty(PropID.ENCRYPTED))
-                || (archive.getArchivePropertyType(PropID.SOLID) == PropType.BOOL && archive.getArchiveBooleanProperty(PropID.SOLID))
-                || (archive.getArchivePropertyType(PropID.IS_VOLUME) == PropType.BOOL && archive.getArchiveBooleanProperty(PropID.IS_VOLUME))) {
-            throw new ArchiveException("Unsupported archive");
-        }
-        return new A7ZipArchive(archive);
-    }
-
-    @Override
-    public void close() {
-        archive.close();
-    }
-
-    List<A7ZipArchiveEntry> getArchiveEntries() {
-        List<A7ZipArchiveEntry> entries = new ArrayList<>();
-
-        for (int i = 0, n = archive.getNumberOfEntries(); i < n; i++) {
-            if (!archive.getEntryBooleanProperty(i, PropID.ENCRYPTED)
-                    && !archive.getEntryBooleanProperty(i, PropID.IS_DIR)
-                    && !archive.getEntryBooleanProperty(i, PropID.IS_VOLUME)
-                    && !archive.getEntryBooleanProperty(i, PropID.SOLID)) {
-                String path = archive.getEntryPath(i);
-                if (isSupportedFilename(path.toLowerCase())) {
-                    entries.add(new A7ZipArchiveEntry(archive, i, path));
-                }
-            }
-        }
-
-        return entries;
-    }
-
-    static class A7ZipArchiveEntry {
-
-        private final InArchive archive;
-        private final int index;
-        private final String path;
-
-        private A7ZipArchiveEntry(InArchive archive, int index, String path) {
-            this.archive = archive;
-            this.index = index;
-            this.path = path;
-        }
-
-        String getPath() {
-            return path;
-        }
-
-        void extract(OutputStream os) throws ArchiveException {
-            archive.extractEntry(index, new OutputStreamSequentialOutStream(os));
-        }
-    }
-
-    private static class UniRandomAccessFileInStream extends SeekableInputStream {
-
-        private final byte[] scratch = new byte[8];
-        private final UniRandomAccessFile file;
-
-        public UniRandomAccessFileInStream(UniRandomAccessFile file) {
-            this.file = file;
-        }
-
-        @Override
-        public void seek(long pos) throws IOException {
-            file.seek(pos);
-        }
-
-        @Override
-        public long tell() throws IOException {
-            return file.getFilePointer();
-        }
-
-        @Override
-        public long size() throws IOException {
-            return file.length();
-        }
-
-        @Override
-        public int read() throws IOException {
-            return (file.read(scratch, 0, 1) != -1) ? scratch[0] & 0xff : -1;
-        }
-
-        @Override
-        public int read(@NonNull byte[] b) throws IOException {
-            return file.read(b, 0, b.length);
-        }
-
-        @Override
-        public int read(byte[] b, int off, int len) throws IOException {
-            return file.read(b, off, len);
-        }
-
-        @Override
-        public void close() throws IOException {
-            file.close();
-        }
-    }
-
-    private static class OutputStreamSequentialOutStream extends OutputStream {
-
-        private final OutputStream stream;
-
-        public OutputStreamSequentialOutStream(OutputStream stream) {
-            this.stream = stream;
-        }
-
-        @Override
-        public void write(int b) throws IOException {
-            stream.write(b);
-        }
-
-        @Override
-        public void write(byte[] b, int off, int len) throws IOException {
-            stream.write(b, off, len);
-        }
-
-        @Override
-        public void close() throws IOException {
-            stream.close();
-        }
-    }
-}
@@ -23,23 +23,18 @@ import android.os.Process;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;

-import com.hippo.a7zip.ArchiveException;
+import com.hippo.UriArchiveAccessor;
 import com.hippo.ehviewer.GetText;
 import com.hippo.ehviewer.R;
 import com.hippo.glgallery.GalleryPageView;
 import com.hippo.image.Image;
 import com.hippo.unifile.UniFile;
-import com.hippo.unifile.UniRandomAccessFile;
-import com.hippo.util.NaturalComparator;
 import com.hippo.yorozuya.thread.PriorityThread;

-import java.io.IOException;
+import java.io.FileNotFoundException;
 import java.io.InputStream;
-import java.util.Collections;
-import java.util.Comparator;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.Stack;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -47,15 +42,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 public class ArchiveGalleryProvider extends GalleryProvider2 {

    private static final AtomicInteger sIdGenerator = new AtomicInteger();
-    private static final Comparator<A7ZipArchive.A7ZipArchiveEntry> naturalComparator = new Comparator<A7ZipArchive.A7ZipArchiveEntry>() {
-        private final NaturalComparator comparator = new NaturalComparator();
-
-        @Override
-        public int compare(A7ZipArchive.A7ZipArchiveEntry o1, A7ZipArchive.A7ZipArchiveEntry o2) {
-            return comparator.compare(o1.getPath(), o2.getPath());
-        }
-    };
-    private final UniFile file;
+    private final UriArchiveAccessor archiveAccessor;
    private final Stack<Integer> requests = new Stack<>();
    private final AtomicInteger extractingIndex = new AtomicInteger(GalleryPageView.INVALID_INDEX);
    private final LinkedHashMap<Integer, InputStream> streams = new LinkedHashMap<>();
@@ -66,7 +53,14 @@ public class ArchiveGalleryProvider extends GalleryProvider2 {
    private String error;

    public ArchiveGalleryProvider(Context context, Uri uri) {
-        file = UniFile.fromMediaUri(context, uri);
+        UriArchiveAccessor archiveAccessor1;
+        try {
+            archiveAccessor1 = new UriArchiveAccessor(context, uri);
+        } catch (FileNotFoundException e) {
+            archiveAccessor1 = null;
+            e.printStackTrace();
+        }
+        archiveAccessor = archiveAccessor1;
    }

    @Override
@@ -167,37 +161,14 @@ public class ArchiveGalleryProvider extends GalleryProvider2 {
    private class ArchiveTask implements Runnable {
        @Override
        public void run() {
-            UniRandomAccessFile uraf = null;
-            try {
-                uraf = file.createRandomAccessFile("r");
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-            if (uraf == null) {
+            size = archiveAccessor.open();
+            if (size <= 0) {
                size = STATE_ERROR;
                error = GetText.getString(R.string.error_reading_failed);
                notifyDataChanged();
                return;
            }
-
-            A7ZipArchive archive = null;
-            try {
-                archive = A7ZipArchive.create(uraf);
-            } catch (ArchiveException e) {
-                e.printStackTrace();
-            }
-            if (archive == null) {
-                size = STATE_ERROR;
-                error = GetText.getString(R.string.error_invalid_archive);
-                notifyDataChanged();
-                return;
-            }
-
-            List<A7ZipArchive.A7ZipArchiveEntry> entries = archive.getArchiveEntries();
-            Collections.sort(entries, naturalComparator);
-
            // Update size and notify changed
-            size = entries.size();
            notifyDataChanged();

            while (!Thread.currentThread().isInterrupted()) {
@@ -217,13 +188,13 @@ public class ArchiveGalleryProvider extends GalleryProvider2 {
                }

                // Check index valid
-                if (index < 0 || index >= entries.size()) {
+                if (index < 0 || index >= size) {
                    extractingIndex.lazySet(GalleryPageView.INVALID_INDEX);
                    notifyPageFailed(index, GetText.getString(R.string.error_out_of_range));
                    continue;
                }

-                Pipe pipe = new Pipe(4 * 1024);
+                Pipe pipe = new Pipe(4096 * 16);

                synchronized (streams) {
                    if (streams.get(index) != null) {
@@ -233,13 +204,7 @@ public class ArchiveGalleryProvider extends GalleryProvider2 {
                    streams.notify();
                }

-                try {
-                    entries.get(index).extract(pipe.getOutputStream());
-                } catch (ArchiveException e) {
-                    e.printStackTrace();
-                } finally {
-                    extractingIndex.lazySet(GalleryPageView.INVALID_INDEX);
-                }
+                archiveAccessor.extractTargetIndexToOutputStream(index, pipe.getOutputStream());
            }
        }
    }
@@ -282,4 +247,4 @@ public class ArchiveGalleryProvider extends GalleryProvider2 {
            }
        }
    }
-}
+}
@@ -107,13 +107,6 @@ class Pipe {
        public void write(@NonNull byte[] b, int off, int len) throws IOException {
            synchronized (Pipe.this) {
                while (len != 0) {
-                    if (outClosed) {
-                        throw new IOException("The OutputStream is closed");
-                    }
-                    if (inClosed) {
-                        throw new IOException("The InputStream is closed");
-                    }
-
                    if (head == tail && full) {
                        // The buffer is full, wait for InputStream read bytes
                        try {
@@ -1,191 +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.preference;
-
-import android.annotation.SuppressLint;
-import android.app.Dialog;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.text.TextUtils;
-import android.util.AttributeSet;
-import android.view.View;
-import android.widget.EditText;
-import android.widget.Spinner;
-
-import androidx.appcompat.app.AlertDialog;
-
-import com.google.android.material.textfield.TextInputLayout;
-import com.hippo.ehviewer.EhApplication;
-import com.hippo.ehviewer.EhProxySelector;
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.Settings;
-import com.hippo.network.InetValidator;
-import com.hippo.preference.DialogPreference;
-import com.hippo.yorozuya.MathUtils;
-import com.hippo.yorozuya.ViewUtils;
-
-public class ProxyPreference extends DialogPreference implements View.OnClickListener {
-
-    private Spinner mType;
-    private TextInputLayout mIpInputLayout;
-    private EditText mIp;
-    private TextInputLayout mPortInputLayout;
-    private EditText mPort;
-
-    public ProxyPreference(Context context) {
-        super(context);
-        init();
-    }
-
-    public ProxyPreference(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init();
-    }
-
-    public ProxyPreference(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        init();
-    }
-
-    private void init() {
-        setDialogLayoutResource(R.layout.preference_dialog_proxy);
-        updateSummary(Settings.getProxyType(), Settings.getProxyIp(), Settings.getProxyPort());
-    }
-
-    private String getProxyTypeText(Context context, int type) {
-        String[] array = context.getResources().getStringArray(R.array.proxy_types);
-        return array[MathUtils.clamp(type, 0, array.length - 1)];
-    }
-
-    private void updateSummary(int type, String ip, int port) {
-        if ((type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS)
-                && (TextUtils.isEmpty(ip) || !InetValidator.isValidInetPort(port))) {
-            type = EhProxySelector.TYPE_SYSTEM;
-        }
-
-        if (type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS) {
-            Context context = getContext();
-            setSummary(context.getString(R.string.settings_advanced_proxy_summary_1,
-                    getProxyTypeText(context, type),
-                    ip,
-                    port));
-        } else {
-            Context context = getContext();
-            setSummary(context.getString(R.string.settings_advanced_proxy_summary_2,
-                    getProxyTypeText(context, type)));
-        }
-    }
-
-    @Override
-    protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
-        super.onPrepareDialogBuilder(builder);
-        builder.setPositiveButton(android.R.string.ok, null);
-    }
-
-    @Override
-    @SuppressLint("SetTextI18n")
-    protected void onDialogCreated(AlertDialog dialog) {
-        super.onDialogCreated(dialog);
-
-        dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(this);
-
-        mType = (Spinner) ViewUtils.$$(dialog, R.id.type);
-        mIpInputLayout = (TextInputLayout) ViewUtils.$$(dialog, R.id.ip_input_layout);
-        mIp = (EditText) ViewUtils.$$(dialog, R.id.ip);
-        mPortInputLayout = (TextInputLayout) ViewUtils.$$(dialog, R.id.port_input_layout);
-        mPort = (EditText) ViewUtils.$$(dialog, R.id.port);
-
-        int type = Settings.getProxyType();
-        String[] array = getContext().getResources().getStringArray(R.array.proxy_types);
-        mType.setSelection(MathUtils.clamp(type, 0, array.length));
-
-        mIp.setText(Settings.getProxyIp());
-
-        String portString;
-        int port = Settings.getProxyPort();
-        if (!InetValidator.isValidInetPort(port)) {
-            portString = null;
-        } else {
-            portString = Integer.toString(port);
-        }
-        mPort.setText(portString);
-    }
-
-    @Override
-    protected void onDialogClosed(boolean positiveResult) {
-        super.onDialogClosed(positiveResult);
-        mType = null;
-        mIpInputLayout = null;
-        mIp = null;
-        mPortInputLayout = null;
-        mPort = null;
-    }
-
-    @Override
-    public void onClick(View v) {
-        Dialog dialog = getDialog();
-        Context context = getContext();
-        if (null == dialog || null == context || null == mType ||
-                null == mIpInputLayout || null == mIp ||
-                null == mPortInputLayout || null == mPort) {
-            return;
-        }
-
-        int type = mType.getSelectedItemPosition();
-
-        String ip = mIp.getText().toString().trim();
-        if (ip.isEmpty()) {
-            if (type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS) {
-                mIpInputLayout.setError(context.getString(R.string.text_is_empty));
-                return;
-            }
-        }
-        mIpInputLayout.setError(null);
-
-        int port;
-        String portString = mPort.getText().toString().trim();
-        if (portString.isEmpty()) {
-            if (type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS) {
-                mPortInputLayout.setError(context.getString(R.string.text_is_empty));
-                return;
-            } else {
-                port = -1;
-            }
-        } else {
-            try {
-                port = Integer.parseInt(portString);
-            } catch (NumberFormatException e) {
-                port = -1;
-            }
-            if (!InetValidator.isValidInetPort(port)) {
-                mPortInputLayout.setError(context.getString(R.string.proxy_invalid_port));
-                return;
-            }
-        }
-        mPortInputLayout.setError(null);
-
-        Settings.putProxyType(type);
-        Settings.putProxyIp(ip);
-        Settings.putProxyPort(port);
-
-        updateSummary(type, ip, port);
-
-        EhApplication.getEhProxySelector(getContext()).updateProxy();
-
-        dialog.dismiss();
-    }
-}
@@ -0,0 +1,162 @@
+/*
+ * 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.preference
+
+import com.google.android.material.textfield.TextInputLayout
+import android.widget.EditText
+import com.hippo.ehviewer.R
+import com.hippo.ehviewer.EhProxySelector
+import android.text.TextUtils
+import com.hippo.network.InetValidator
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.DialogInterface
+import android.util.AttributeSet
+import android.view.View
+import android.widget.AutoCompleteTextView
+import androidx.appcompat.app.AlertDialog
+import com.hippo.ehviewer.EhApplication
+import com.hippo.ehviewer.Settings
+import com.hippo.preference.DialogPreference
+import com.hippo.yorozuya.MathUtils
+import com.hippo.yorozuya.ViewUtils
+import java.lang.NumberFormatException
+
+class ProxyPreference @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : DialogPreference(context, attrs), View.OnClickListener {
+    private var mType: TextInputLayout? = null
+    private var mIpInputLayout: TextInputLayout? = null
+    private var mIp: EditText? = null
+    private var mPortInputLayout: TextInputLayout? = null
+    private var mPort: EditText? = null
+    private val mArray: Array<String>
+
+    init {
+        mArray = context.resources.getStringArray(R.array.proxy_types)
+        dialogLayoutResource = R.layout.preference_dialog_proxy
+        updateSummary(Settings.getProxyType(), Settings.getProxyIp(), Settings.getProxyPort())
+    }
+
+    private fun getProxyTypeText(type: Int): String {
+        return mArray[MathUtils.clamp(type, 0, mArray.size - 1)]
+    }
+
+    private fun updateSummary(type: Int, ip: String?, port: Int) {
+        var type1 = type
+        if ((type1 == EhProxySelector.TYPE_HTTP || type1 == EhProxySelector.TYPE_SOCKS)
+            && (TextUtils.isEmpty(ip) || !InetValidator.isValidInetPort(port))
+        ) {
+            type1 = EhProxySelector.TYPE_SYSTEM
+        }
+        summary = if (type1 == EhProxySelector.TYPE_HTTP || type1 == EhProxySelector.TYPE_SOCKS) {
+            val context = context
+            context.getString(
+                R.string.settings_advanced_proxy_summary_1,
+                getProxyTypeText(type1),
+                ip,
+                port
+            )
+        } else {
+            val context = context
+            context.getString(
+                R.string.settings_advanced_proxy_summary_2,
+                getProxyTypeText(type1)
+            )
+        }
+    }
+
+    override fun onPrepareDialogBuilder(builder: AlertDialog.Builder) {
+        super.onPrepareDialogBuilder(builder)
+        builder.setPositiveButton(android.R.string.ok, null)
+    }
+
+    @SuppressLint("SetTextI18n")
+    override fun onDialogCreated(dialog: AlertDialog) {
+        super.onDialogCreated(dialog)
+        dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(this)
+        mType = ViewUtils.`$$`(dialog, R.id.type) as TextInputLayout
+        val array = context.resources.getStringArray(R.array.proxy_types)
+        mIpInputLayout = ViewUtils.`$$`(dialog, R.id.ip_input_layout) as TextInputLayout
+        mIp = ViewUtils.`$$`(dialog, R.id.ip) as EditText
+        mPortInputLayout = ViewUtils.`$$`(dialog, R.id.port_input_layout) as TextInputLayout
+        mPort = ViewUtils.`$$`(dialog, R.id.port) as EditText
+        val type = Settings.getProxyType()
+        (mType!!.editText as AutoCompleteTextView).setText(array[MathUtils.clamp(type, 0, array.size)], false)
+        mIp!!.setText(Settings.getProxyIp())
+        val portString: String?
+        val port = Settings.getProxyPort()
+        portString = if (!InetValidator.isValidInetPort(port)) {
+            null
+        } else {
+            port.toString()
+        }
+        mPort!!.setText(portString)
+    }
+
+    override fun onDialogClosed(positiveResult: Boolean) {
+        super.onDialogClosed(positiveResult)
+        mType = null
+        mIpInputLayout = null
+        mIp = null
+        mPortInputLayout = null
+        mPort = null
+    }
+
+    override fun onClick(v: View) {
+        val dialog = dialog
+        val context: Context = context
+        if (null == dialog || null == mType || null == mIpInputLayout || null == mIp || null == mPortInputLayout || null == mPort) {
+            return
+        }
+        val type = mArray.indexOf(mType!!.editText!!.text.toString())
+        val ip = mIp!!.text.toString().trim { it <= ' ' }
+        if (ip.isEmpty()) {
+            if (type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS) {
+                mIpInputLayout!!.error = context.getString(R.string.text_is_empty)
+                return
+            }
+        }
+        mIpInputLayout!!.error = null
+        val port: Int
+        val portString = mPort!!.text.toString().trim { it <= ' ' }
+        if (portString.isEmpty()) {
+            if (type == EhProxySelector.TYPE_HTTP || type == EhProxySelector.TYPE_SOCKS) {
+                mPortInputLayout!!.error = context.getString(R.string.text_is_empty)
+                return
+            } else {
+                port = -1
+            }
+        } else {
+            port = try {
+                portString.toInt()
+            } catch (e: NumberFormatException) {
+                -1
+            }
+            if (!InetValidator.isValidInetPort(port)) {
+                mPortInputLayout!!.error = context.getString(R.string.proxy_invalid_port)
+                return
+            }
+        }
+        mPortInputLayout!!.error = null
+        Settings.putProxyType(type)
+        Settings.putProxyIp(ip)
+        Settings.putProxyPort(port)
+        updateSummary(type, ip, port)
+        EhApplication.getEhProxySelector(getContext()).updateProxy()
+        dialog.dismiss()
+    }
+}
@@ -1,58 +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.preference;
-
-import android.content.Context;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.util.AttributeSet;
-
-import androidx.preference.Preference;
-
-import com.hippo.ehviewer.R;
-
-public class VersionPreference extends Preference {
-
-    public VersionPreference(Context context) {
-        super(context);
-        init(context);
-    }
-
-    public VersionPreference(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init(context);
-    }
-
-    public VersionPreference(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        init(context);
-    }
-
-    private void init(Context context) {
-        setTitle(R.string.settings_about_version);
-
-        String version;
-        try {
-            PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
-            version = pInfo.versionName;
-        } catch (PackageManager.NameNotFoundException e) {
-            e.printStackTrace();
-            version = context.getString(R.string.error_unknown);
-        }
-        setSummary(version);
-    }
-}
@@ -0,0 +1,46 @@
+/*
+ * 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.preference
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.util.AttributeSet
+import androidx.appcompat.app.AlertDialog
+import com.hippo.Native
+import com.hippo.ehviewer.R
+import com.hippo.preference.MessagePreference
+
+class VersionPreference @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : MessagePreference(context, attrs) {
+    init {
+        setTitle(R.string.settings_about_version)
+        @Suppress("DEPRECATION") val version: String = try {
+            val pInfo = context.packageManager.getPackageInfo(context.packageName, 0)
+            pInfo.versionName
+        } catch (e: PackageManager.NameNotFoundException) {
+            e.printStackTrace()
+            context.getString(R.string.error_unknown)
+        }
+        summary = version
+    }
+
+    override fun onPrepareDialogBuilder(builder: AlertDialog.Builder) {
+        super.onPrepareDialogBuilder(builder)
+        builder.setTitle(R.string.show_library_version)
+        builder.setMessage(Native.getlibarchiveVersion() + "\nlzma(xz-utils) " + Native.getliblzmaVersion() + "\nzlib " + Native.getzlibVersion() + "\nlibjpeg-turbo " + Native.getlibjpeg_turboVersion())
+    }
+}
@@ -26,18 +26,19 @@ import android.view.Window;
 import android.view.WindowInsets;
 import android.view.WindowManager;

-import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.StyleRes;
+import androidx.appcompat.app.AppCompatActivity;

 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;

 import rikka.core.res.ResourcesKt;
-import rikka.material.app.MaterialActivity;
+import rikka.insets.WindowInsetsHelper;
+import rikka.layoutinflater.view.LayoutInflaterFactory;

-public abstract class EhActivity extends MaterialActivity {
+public abstract class EhActivity extends AppCompatActivity {

    private static final String THEME_DEFAULT = "DEFAULT";
    private static final String THEME_BLACK = "BLACK";
@@ -47,10 +48,8 @@ public abstract class EhActivity extends MaterialActivity {
    }

    public static String getTheme(Context context) {
-        if (isBlackNightTheme()
-                && isNightMode(context.getResources().getConfiguration()))
+        if (isBlackNightTheme() && isNightMode(context.getResources().getConfiguration()))
            return THEME_BLACK;
-
        return THEME_DEFAULT;
    }

@@ -58,38 +57,67 @@ public abstract class EhActivity extends MaterialActivity {
        return (configuration.uiMode & Configuration.UI_MODE_NIGHT_YES) > 0;
    }

-    @Override
-    public void onApplyUserThemeResource(@NonNull Resources.Theme theme, boolean isDecorView) {
-        theme.applyStyle(getThemeStyleRes(this), true);
-    }
-
-    @Override
-    public String computeUserThemeKey() {
-        return getTheme(this);
-    }
-
    @StyleRes
    public int getThemeStyleRes(Context context) {
-        switch (getTheme(context)) {
-            case THEME_BLACK:
-                return R.style.ThemeOverlay_Black;
-            case THEME_DEFAULT:
-            default:
-                return R.style.ThemeOverlay;
+        if (THEME_BLACK.equals(getTheme(context))) {
+            return R.style.ThemeOverlay_Black;
        }
+        return R.style.ThemeOverlay;
+    }
+
+    @Override
+    protected void onApplyThemeResource(Resources.Theme theme, int resid, boolean first) {
+        if (getParent() == null) {
+            theme.applyStyle(resid, true);
+        } else {
+            try {
+                theme.setTo(getParent().getTheme());
+            } catch (Exception ignored) {
+            }
+            theme.applyStyle(resid, false);
+        }
+        theme.applyStyle(getThemeStyleRes(this), true);
+        super.onApplyThemeResource(theme, R.style.ThemeOverlay, first);
+    }
+
+    @Override
+    protected void onNightModeChanged(int mode) {
+        getTheme().applyStyle(getThemeStyleRes(this), true);
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        getLayoutInflater().setFactory2((new LayoutInflaterFactory(getDelegate())).addOnViewCreatedListener(WindowInsetsHelper.getLISTENER()));
        super.onCreate(savedInstanceState);

+
+        Window window = getWindow();
+        window.setStatusBarColor(Color.TRANSPARENT);
+
+        window.getDecorView().post(() -> {
+            WindowInsets rootWindowInsets = window.getDecorView().getRootWindowInsets();
+            if (rootWindowInsets != null && rootWindowInsets.getSystemWindowInsetBottom() >= Resources.getSystem().getDisplayMetrics().density * 40) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                    window.setNavigationBarDividerColor(getColor(R.color.navigation_bar_divider));
+                }
+                window.setNavigationBarColor(ResourcesKt.resolveColor(getTheme(), android.R.attr.navigationBarColor) & 0x00ffffff | -0x20000000);
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    window.setNavigationBarContrastEnforced(false);
+                }
+            } else {
+                window.setNavigationBarColor(Color.TRANSPARENT);
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    window.setNavigationBarContrastEnforced(true);
+                }
+            }
+        });
+
        ((EhApplication) getApplication()).registerActivity(this);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
-
        ((EhApplication) getApplication()).unregisterActivity(this);
    }

@@ -103,26 +131,4 @@ public abstract class EhActivity extends MaterialActivity {
            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
        }
    }
-
-    @Override
-    public void onApplyTranslucentSystemBars() {
-        super.onApplyTranslucentSystemBars();
-        Window window = getWindow();
-        window.setStatusBarColor(Color.TRANSPARENT);
-
-        window.getDecorView().post(() -> {
-            WindowInsets rootWindowInsets = window.getDecorView().getRootWindowInsets();
-            if (rootWindowInsets != null && rootWindowInsets.getSystemWindowInsetBottom() >= Resources.getSystem().getDisplayMetrics().density * 40) {
-                window.setNavigationBarColor(ResourcesKt.resolveColor(getTheme(), android.R.attr.navigationBarColor) & 0x00ffffff | -0x20000000);
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                    window.setNavigationBarContrastEnforced(false);
-                }
-            } else {
-                window.setNavigationBarColor(Color.TRANSPARENT);
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                    window.setNavigationBarContrastEnforced(true);
-                }
-            }
-        });
-    }
 }
@@ -49,7 +49,6 @@ import android.webkit.MimeTypeMap;
 import android.widget.FrameLayout;
 import android.widget.SeekBar;
 import android.widget.Spinner;
-import android.widget.Switch;
 import android.widget.TextView;
 import android.widget.Toast;

@@ -58,6 +57,7 @@ import androidx.activity.result.contract.ActivityResultContracts;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.content.ContextCompat;
 import androidx.core.content.FileProvider;
 import androidx.core.view.ViewCompat;
@@ -66,6 +66,7 @@ import androidx.core.view.WindowInsetsCompat;
 import androidx.core.view.WindowInsetsControllerCompat;

 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.materialswitch.MaterialSwitch;
 import com.hippo.ehviewer.AppConfig;
 import com.hippo.ehviewer.BuildConfig;
 import com.hippo.ehviewer.R;
@@ -105,7 +106,6 @@ import java.io.OutputStream;

 import rikka.core.res.ConfigurationKt;
 import rikka.core.res.ResourcesKt;
-import rikka.material.app.DayNightDelegate;

 public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChangeListener,
        GalleryView.Listener {
@@ -221,16 +221,7 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
    private int mLayoutMode;
    private int mSize;
    private int mCurrentIndex;
-    private int mSavingPage = -1;    ActivityResultLauncher<String> requestStoragePermissionLauncher = registerForActivityResult(
-            new ActivityResultContracts.RequestPermission(),
-            result -> {
-                if (result && mSavingPage != -1) {
-                    saveImage(mSavingPage);
-                } else {
-                    Toast.makeText(this, R.string.error_cant_save_image, Toast.LENGTH_SHORT).show();
-                }
-                mSavingPage = -1;
-            });
+    private int mSavingPage = -1;

    private void buildProvider() {
        if (mGalleryProvider != null) {
@@ -247,13 +238,9 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
            }
        } else if (Intent.ACTION_VIEW.equals(mAction)) {
            if (mUri != null) {
-                // Only support zip now
                try {
                    grantUriPermission(BuildConfig.APPLICATION_ID, mUri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
                } catch (Exception e) {
-                    // Some stupid file manager send us a uri and don't allow us to read it
-                    // java.lang.SecurityException: UID 10671 does not have permission to
-                    // content://com.UCMobile.fileProvider/external_files/BaiduNetdisk/getvoice [user 0]
                    Toast.makeText(this, R.string.error_reading_failed, Toast.LENGTH_SHORT).show();
                }
                mGalleryProvider = new ArchiveGalleryProvider(this, mUri);
@@ -302,19 +289,23 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
    protected void attachBaseContext(@NonNull Context newBase) {
        switch (Settings.getReadTheme()) {
            case 1:
-                getDayNightDelegate().setLocalNightMode(DayNightDelegate.MODE_NIGHT_YES, false);
+                getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES);
                break;
            case 2:
-                getDayNightDelegate().setLocalNightMode(DayNightDelegate.MODE_NIGHT_NO, false);
+                getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
                break;
        }
        super.attachBaseContext(newBase);
-    }
-
-    @Override
-    public boolean respectDefaultNightMode() {
-        return Settings.getReadTheme() == 0;
-    }
+    }    ActivityResultLauncher<String> requestStoragePermissionLauncher = registerForActivityResult(
+            new ActivityResultContracts.RequestPermission(),
+            result -> {
+                if (result && mSavingPage != -1) {
+                    saveImage(mSavingPage);
+                } else {
+                    Toast.makeText(this, R.string.error_cant_save_image, Toast.LENGTH_SHORT).show();
+                }
+                mSavingPage = -1;
+            });

    @Override
    @SuppressWarnings({"WrongConstant"})
@@ -357,7 +348,6 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
                .setStartPosition(Settings.getStartPosition())
                .setStartPage(startPage)
                .setBackgroundColor(ResourcesKt.resolveColor(getTheme(), android.R.attr.colorBackground))
-                .setEdgeColor(ResourcesKt.resolveColor(getTheme(), R.attr.colorEdgeEffect) & 0xffffff | 0x33000000)
                .setPagerInterval(Settings.getShowPageInterval() ? resources.getDimensionPixelOffset(R.dimen.gallery_pager_interval) : 0)
                .setScrollInterval(Settings.getShowPageInterval() ? resources.getDimensionPixelOffset(R.dimen.gallery_scroll_interval) : 0)
                .setPageMinHeight(resources.getDimensionPixelOffset(R.dimen.gallery_page_min_height))
@@ -1051,15 +1041,15 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
        private final Spinner mScaleMode;
        private final Spinner mStartPosition;
        private final Spinner mReadTheme;
-        private final Switch mKeepScreenOn;
-        private final Switch mShowClock;
-        private final Switch mShowProgress;
-        private final Switch mShowBattery;
-        private final Switch mShowPageInterval;
-        private final Switch mVolumePage;
-        private final Switch mReverseVolumePage;
-        private final Switch mReadingFullscreen;
-        private final Switch mCustomScreenLightness;
+        private final MaterialSwitch mKeepScreenOn;
+        private final MaterialSwitch mShowClock;
+        private final MaterialSwitch mShowProgress;
+        private final MaterialSwitch mShowBattery;
+        private final MaterialSwitch mShowPageInterval;
+        private final MaterialSwitch mVolumePage;
+        private final MaterialSwitch mReverseVolumePage;
+        private final MaterialSwitch mReadingFullscreen;
+        private final MaterialSwitch mCustomScreenLightness;
        private final SeekBar mScreenLightness;

        @SuppressLint("InflateParams")
@@ -1304,4 +1294,6 @@ public class GalleryActivity extends EhActivity implements SeekBar.OnSeekBarChan
    }


+
+
 }
@@ -22,18 +22,15 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.verify.domain.DomainVerificationManager;
 import android.content.pm.verify.domain.DomainVerificationUserState;
-import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.net.ConnectivityManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.PersistableBundle;
-import android.text.TextUtils;
 import android.view.Gravity;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.TextView;
 import android.widget.Toast;

 import androidx.activity.result.ActivityResultLauncher;
@@ -43,7 +40,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.annotation.StringRes;
-import androidx.appcompat.app.AppCompatDelegate;
 import androidx.drawerlayout.widget.DrawerLayout;

 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
@@ -51,6 +47,7 @@ import com.google.android.material.navigation.NavigationView;
 import com.google.android.material.snackbar.Snackbar;
 import com.hippo.app.EditTextDialogBuilder;
 import com.hippo.ehviewer.AppConfig;
+import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.client.EhTagDatabase;
@@ -85,7 +82,6 @@ import com.hippo.unifile.UniFile;
 import com.hippo.util.BitmapUtils;
 import com.hippo.util.ClipboardUtil;
 import com.hippo.widget.DrawerView;
-import com.hippo.widget.LoadImageView;
 import com.hippo.yorozuya.IOUtils;
 import com.hippo.yorozuya.SimpleHandler;
 import com.hippo.yorozuya.ViewUtils;
@@ -96,8 +92,6 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.util.Map;

-import rikka.material.app.DayNightDelegate;
-
 public final class MainActivity extends StageActivity
        implements NavigationView.OnNavigationItemSelectedListener {

@@ -139,10 +133,6 @@ public final class MainActivity extends StageActivity
    private NavigationView mNavView;
    @Nullable
    private DrawerView mRightDrawer;
-    @Nullable
-    private LoadImageView mAvatar;
-    @Nullable
-    private TextView mDisplayName;
    private int mNavCheckedItem = 0;

    @Override
@@ -153,7 +143,7 @@ public final class MainActivity extends StageActivity
    @NonNull
    @Override
    protected Announcer getLaunchAnnouncer() {
-        if (!TextUtils.isEmpty(Settings.getSecurity())) {
+        if (Settings.getSecurity() && SecurityScene.Companion.isAuthenticationSupported(this)) {
            return new Announcer(SecurityScene.class);
        } else if (Settings.getShowWarning()) {
            return new Announcer(WarningScene.class);
@@ -171,7 +161,7 @@ public final class MainActivity extends StageActivity
    // Sometimes scene can't show directly
    private Announcer processAnnouncer(Announcer announcer) {
        if (0 == getSceneCount()) {
-            if (!TextUtils.isEmpty(Settings.getSecurity())) {
+            if (Settings.getSecurity() && SecurityScene.Companion.isAuthenticationSupported(this)) {
                Bundle newArgs = new Bundle();
                newArgs.putString(SecurityScene.KEY_TARGET_SCENE, announcer.getClazz().getName());
                newArgs.putBundle(SecurityScene.KEY_TARGET_ARGS, announcer.getArgs());
@@ -320,19 +310,6 @@ public final class MainActivity extends StageActivity
        mDrawerLayout.setStatusBarBackgroundColor(0);
        mNavView = (NavigationView) ViewUtils.$$(this, R.id.nav_view);
        mRightDrawer = (DrawerView) ViewUtils.$$(this, R.id.right_drawer);
-        View headerLayout = mNavView.getHeaderView(0);
-        mAvatar = (LoadImageView) ViewUtils.$$(headerLayout, R.id.avatar);
-        mDisplayName = (TextView) ViewUtils.$$(headerLayout, R.id.display_name);
-        ViewUtils.$$(headerLayout, R.id.night_mode).setOnClickListener(v -> {
-            int theme = (getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_YES) > 0 ? DayNightDelegate.MODE_NIGHT_NO : DayNightDelegate.MODE_NIGHT_YES;
-            DayNightDelegate.setDefaultNightMode(theme);
-            recreate();
-            if (Settings.getTheme() != AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM) {
-                Settings.putTheme(theme);
-            }
-        });
-
-        updateProfile();

        if (mNavView != null) {
            mNavView.setNavigationItemSelectedListener(this);
@@ -440,23 +417,21 @@ public final class MainActivity extends StageActivity
        mDrawerLayout = null;
        mNavView = null;
        mRightDrawer = null;
-        mAvatar = null;
-        mDisplayName = null;
    }

    @Override
    protected void onResume() {
+        if (Settings.getSecurity() && SecurityScene.Companion.isAuthenticationSupported(this) && EhApplication.locked) {
+            startScene(new Announcer(SecurityScene.class), true);
+        }
        super.onResume();
-
        setNavCheckedItem(mNavCheckedItem);
-
        checkClipboardUrl();
    }

    @Override
    protected void onTransactScene() {
        super.onTransactScene();
-
        checkClipboardUrl();
    }

@@ -546,25 +521,6 @@ public final class MainActivity extends StageActivity
        }
    }

-    public void updateProfile() {
-        if (null == mAvatar || null == mDisplayName) {
-            return;
-        }
-
-        String avatarUrl = Settings.getAvatar();
-        if (TextUtils.isEmpty(avatarUrl)) {
-            mAvatar.load(R.drawable.default_avatar);
-        } else {
-            mAvatar.load(avatarUrl, avatarUrl);
-        }
-
-        String displayName = Settings.getDisplayName();
-        if (TextUtils.isEmpty(displayName)) {
-            displayName = getString(R.string.default_display_name);
-        }
-        mDisplayName.setText(displayName);
-    }
-
    public void addAboveSnackView(View view) {
        if (mStageLayout != null) {
            mStageLayout.addAboveSnackView(view);
@@ -21,40 +21,19 @@ import android.os.Bundle;
 import androidx.annotation.Nullable;
 import androidx.preference.Preference;

-import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
 import com.hippo.text.Html;
-import com.hippo.util.AppHelper;

 public class AboutFragment extends BasePreferenceFragment {

    private static final String KEY_AUTHOR = "author";
-    //private static final String KEY_DONATE = "donate";
    private static final String KEY_CHECK_FOR_UPDATES = "check_for_updates";

    @Override
    public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) {
        addPreferencesFromResource(R.xml.about_settings);
-
        Preference author = findPreference(KEY_AUTHOR);
-        //Preference donate = findPreference(KEY_DONATE);
-        Preference checkForUpdate = findPreference(KEY_CHECK_FOR_UPDATES);
-
        author.setSummary(Html.fromHtml(getString(R.string.settings_about_author_summary).replace('$', '@')));
-
-        author.setOnPreferenceClickListener(this);
-        //donate.setOnPreferenceClickListener(this);
-        checkForUpdate.setOnPreferenceClickListener(this);
-    }
-
-    @Override
-    public boolean onPreferenceClick(Preference preference) {
-        String key = preference.getKey();
-        if (KEY_AUTHOR.equals(key)) {
-            AppHelper.sendEmail(requireActivity(), EhApplication.getDeveloperEmail(),
-                    "About EhViewer", null);
-        }
-        return true;
    }

    @Override
@@ -18,6 +18,7 @@ package com.hippo.ehviewer.ui.fragment;

 import android.app.Activity;
 import android.content.Intent;
+import android.content.res.Resources;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
@@ -27,6 +28,8 @@ import androidx.activity.result.ActivityResultLauncher;
 import androidx.activity.result.contract.ActivityResultContracts;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.core.os.LocaleListCompat;
 import androidx.preference.Preference;

 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
@@ -54,8 +57,6 @@ import java.util.Locale;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;

-import rikka.material.app.LocaleDelegate;
-
 public class AdvancedFragment extends BasePreferenceFragment {

    private static final String KEY_DUMP_LOGCAT = "dump_logcat";
@@ -291,9 +292,9 @@ public class AdvancedFragment extends BasePreferenceFragment {
        String key = preference.getKey();
        if (KEY_APP_LANGUAGE.equals(key)) {
            if ("system".equals(newValue)) {
-                LocaleDelegate.setDefaultLocale(LocaleDelegate.getSystemLocale());
+                AppCompatDelegate.setApplicationLocales(LocaleListCompat.wrap(Resources.getSystem().getConfiguration().getLocales()));
            } else {
-                LocaleDelegate.setDefaultLocale(Locale.forLanguageTag((String) newValue));
+                AppCompatDelegate.setApplicationLocales(LocaleListCompat.forLanguageTags((String) newValue));
            }
            requireActivity().recreate();
            return true;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import androidx.annotation.StringRes;
@@ -1,18 +1,32 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.ViewGroup;

 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.preference.Preference;
-import androidx.recyclerview.widget.RecyclerView;

 import com.hippo.ehviewer.ui.SettingsActivity;
 import com.takisoft.preferencex.PreferenceFragmentCompat;

-import rikka.recyclerview.RecyclerViewKt;

 public class BasePreferenceFragment extends PreferenceFragmentCompat
        implements Preference.OnPreferenceClickListener, Preference.OnPreferenceChangeListener {
@@ -53,11 +67,4 @@ public class BasePreferenceFragment extends PreferenceFragmentCompat
    public void showTip(CharSequence message, int length) {
        ((SettingsActivity) requireActivity()).showTip(message, length);
    }
-
-    @Override
-    public RecyclerView onCreateRecyclerView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
-        RecyclerView recyclerView = super.onCreateRecyclerView(inflater, parent, savedInstanceState);
-        RecyclerViewKt.fixEdgeEffect(recyclerView, false, true);
-        return recyclerView;
-    }
 }
@@ -21,14 +21,13 @@ import android.content.res.Configuration;
 import android.os.Bundle;

 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatDelegate;
 import androidx.preference.Preference;

 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.client.EhTagDatabase;

-import rikka.material.app.DayNightDelegate;
-
 public class EhFragment extends BasePreferenceFragment {

    @Override
@@ -62,7 +61,7 @@ public class EhFragment extends BasePreferenceFragment {
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        String key = preference.getKey();
        if (Settings.KEY_THEME.equals(key)) {
-            DayNightDelegate.setDefaultNightMode(Integer.parseInt((String) newValue));
+            AppCompatDelegate.setDefaultNightMode(Integer.parseInt((String) newValue));
            requireActivity().recreate();
            return true;
        } else if (Settings.KEY_GALLERY_SITE.equals(key)) {
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.content.DialogInterface;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.app.Dialog;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.annotation.SuppressLint;
@@ -1,37 +0,0 @@
-package com.hippo.ehviewer.ui.fragment;
-
-import android.os.Bundle;
-import android.text.TextUtils;
-
-import androidx.annotation.Nullable;
-import androidx.preference.Preference;
-
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.Settings;
-
-/**
- * Created by Mo10 on 2018/2/10.
- */
-
-public class PrivacyFragment extends BasePreferenceFragment {
-    private static final String KEY_PATTERN_PROTECTION = "pattern_protection";
-
-    @Override
-    public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) {
-        addPreferencesFromResource(R.xml.privacy_settings);
-    }
-
-    @Override
-    public void onStart() {
-        super.onStart();
-        Preference patternProtection = findPreference(KEY_PATTERN_PROTECTION);
-        patternProtection.setSummary(TextUtils.isEmpty(Settings.getSecurity()) ?
-                R.string.settings_privacy_pattern_protection_not_set :
-                R.string.settings_privacy_pattern_protection_set);
-    }
-
-    @Override
-    public int getFragmentTitle() {
-        return R.string.settings_privacy;
-    }
-}
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.hippo.ehviewer.ui.fragment
+
+import android.os.Bundle
+import androidx.preference.SwitchPreferenceCompat
+import com.hippo.ehviewer.R
+import com.hippo.ehviewer.Settings
+import com.hippo.ehviewer.ui.scene.SecurityScene.Companion.isAuthenticationSupported
+
+/**
+ * Created by Mo10 on 2018/2/10.
+ */
+class PrivacyFragment : BasePreferenceFragment() {
+    override fun onCreatePreferencesFix(savedInstanceState: Bundle?, rootKey: String?) {
+        addPreferencesFromResource(R.xml.privacy_settings)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        if (!isAuthenticationSupported(requireContext())) {
+            Settings.putSecurity(false)
+            findPreference<SwitchPreferenceCompat>("require_unlock")?.isEnabled = false
+            findPreference<SwitchPreferenceCompat>("require_unlock")?.isChecked = false
+        }
+    }
+
+    override fun getFragmentTitle(): Int {
+        return R.string.settings_privacy
+    }
+}
@@ -1,87 +0,0 @@
-package com.hippo.ehviewer.ui.fragment;
-
-import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.CheckBox;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.biometric.BiometricManager;
-
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.Settings;
-import com.hippo.widget.lockpattern.LockPatternUtils;
-import com.hippo.widget.lockpattern.LockPatternView;
-import com.hippo.yorozuya.ViewUtils;
-
-public class SetSecurityFragment extends BaseFragment implements View.OnClickListener {
-
-    @Nullable
-    private LockPatternView mPatternView;
-    @Nullable
-    private View mCancel;
-    @Nullable
-    private View mSet;
-    @Nullable
-    private CheckBox mFingerprint;
-
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.activity_set_security, container, false);
-
-        mPatternView = (LockPatternView) ViewUtils.$$(view, R.id.pattern_view);
-        mCancel = ViewUtils.$$(view, R.id.cancel);
-        mSet = ViewUtils.$$(view, R.id.set);
-        mFingerprint = (CheckBox) ViewUtils.$$(view, R.id.fingerprint_checkbox);
-
-        String pattern = Settings.getSecurity();
-        if (!TextUtils.isEmpty(pattern)) {
-            mPatternView.setPattern(LockPatternView.DisplayMode.Correct,
-                    LockPatternUtils.stringToPattern(pattern));
-        }
-
-        if (BiometricManager.from(requireContext()).canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK) == BiometricManager.BIOMETRIC_SUCCESS) {
-            mFingerprint.setVisibility(View.VISIBLE);
-            mFingerprint.setChecked(Settings.getEnableFingerprint());
-        }
-
-        mCancel.setOnClickListener(this);
-        mSet.setOnClickListener(this);
-        return view;
-    }
-
-    @Override
-    public void onDestroyView() {
-        super.onDestroyView();
-        mPatternView = null;
-    }
-
-    @Override
-    public void onClick(View v) {
-        if (v == mCancel) {
-            requireActivity().onBackPressed();
-        } else if (v == mSet) {
-            if (null != mPatternView && null != mFingerprint) {
-                String security;
-                if (mPatternView.getCellSize() <= 1) {
-                    security = "";
-                } else {
-                    security = mPatternView.getPatternString();
-                }
-                Settings.putSecurity(security);
-                Settings.putEnableFingerprint(mFingerprint.getVisibility() == View.VISIBLE &&
-                        mFingerprint.isChecked() && !security.isEmpty());
-            }
-            requireActivity().onBackPressed();
-        }
-    }
-
-    @Override
-    public int getFragmentTitle() {
-        return R.string.set_pattern_protection;
-    }
-}
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.os.Bundle;
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.ui.fragment;

 import android.annotation.SuppressLint;
@@ -58,13 +58,6 @@ public abstract class BaseScene extends SceneFragment {
    private SparseArray<Parcelable> drawerViewState;
    private boolean needWhiteStatusBar = needWhiteStatusBar();

-    public void updateAvatar() {
-        FragmentActivity activity = getActivity();
-        if (activity instanceof MainActivity) {
-            ((MainActivity) activity).updateProfile();
-        }
-    }
-
    public void addAboveSnackView(View view) {
        FragmentActivity activity = getActivity();
        if (activity instanceof MainActivity) {
@@ -30,7 +30,6 @@ import android.os.Bundle;
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.SparseBooleanArray;
-import android.util.TypedValue;
 import android.view.Display;
 import android.view.Gravity;
 import android.view.LayoutInflater;
@@ -114,7 +113,6 @@ import java.util.LinkedList;
 import java.util.List;

 import rikka.core.res.ResourcesKt;
-import rikka.recyclerview.RecyclerViewKt;

@SuppressLint("RtlHardcoded")
 public class DownloadsScene extends ToolbarScene
@@ -378,12 +376,10 @@ public class DownloadsScene extends ToolbarScene
            mRecyclerView.scrollToPosition(mInitPosition);
            mInitPosition = -1;
        }
-        RecyclerViewKt.addEdgeSpacing(mRecyclerView, 4, 4, 4, 4, TypedValue.COMPLEX_UNIT_DIP);
-        RecyclerViewKt.fixEdgeEffect(mRecyclerView, false, true);

        mFastScroller.attachToRecyclerView(mRecyclerView);
        HandlerDrawable handlerDrawable = new HandlerDrawable();
-        handlerDrawable.setColor(com.google.android.material.R.color.material_dynamic_neutral100);
+        handlerDrawable.setColor(ResourcesKt.resolveColor(getTheme(), com.google.android.material.R.attr.colorPrimary));
        mFastScroller.setHandlerDrawable(handlerDrawable);
        mFastScroller.setOnDragHandlerListener(this);

@@ -468,7 +464,6 @@ public class DownloadsScene extends ToolbarScene
                TapTarget.forBounds(bounds,
                                getString(R.string.guide_download_labels_title),
                                getString(R.string.guide_download_labels_text))
-                        .outerCircleColor(R.color.colorPrimary)
                        .transparentTarget(true),
                new TapTargetView.Listener() {
                    @Override
@@ -1345,7 +1340,6 @@ public class DownloadsScene extends ToolbarScene
                args.putString(GalleryDetailScene.KEY_ACTION, GalleryDetailScene.ACTION_GALLERY_INFO);
                args.putParcelable(GalleryDetailScene.KEY_GALLERY_INFO, list.get(index));
                Announcer announcer = new Announcer(GalleryDetailScene.class).setArgs(args);
-                announcer.setTranHelper(new EnterGalleryDetailTransaction(thumb));
                startScene(announcer);
            } else if (start == v) {
                Intent intent = new Intent(activity, DownloadService.class);
@@ -1,59 +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.ui.scene;
-
-import android.content.Context;
-import android.view.View;
-
-import androidx.core.view.ViewCompat;
-import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentTransaction;
-import androidx.transition.TransitionInflater;
-
-import com.hippo.ehviewer.R;
-import com.hippo.scene.TransitionHelper;
-
-class EnterGalleryDetailTransaction implements TransitionHelper {
-
-    private final View mThumb;
-
-    public EnterGalleryDetailTransaction(View thumb) {
-        mThumb = thumb;
-    }
-
-    @Override
-    public boolean onTransition(Context context, FragmentTransaction transaction,
-                                Fragment exit, Fragment enter) {
-        if (mThumb == null || !(enter instanceof GalleryDetailScene)) {
-            return false;
-        }
-
-        String transitionName = ViewCompat.getTransitionName(mThumb);
-        if (transitionName != null) {
-            exit.setSharedElementReturnTransition(
-                    TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
-            exit.setExitTransition(
-                    TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
-            enter.setSharedElementEnterTransition(
-                    TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
-            enter.setEnterTransition(
-                    TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
-            transaction.addSharedElement(mThumb, transitionName);
-        }
-        return true;
-    }
-}
@@ -290,7 +290,8 @@ public class FavoritesScene extends BaseScene implements
        updateSearchBar();
        mSearchBarMover = new SearchBarMover(this, mSearchBar, mRecyclerView);

-        mActionFabDrawable = new AddDeleteDrawable(context, resources.getColor(R.color.primary_drawable_dark));
+        int colorID = ResourcesKt.resolveColor(getTheme(), com.google.android.material.R.attr.colorOnSurface);
+        mActionFabDrawable = new AddDeleteDrawable(context, colorID);
        mFabLayout.getPrimaryFab().setImageDrawable(mActionFabDrawable);
        mFabLayout.setExpanded(false, false);
        mFabLayout.setAutoCancel(true);
@@ -334,7 +335,6 @@ public class FavoritesScene extends BaseScene implements
                TapTarget.forBounds(bounds,
                                getString(R.string.guide_collections_title),
                                getString(R.string.guide_collections_text))
-                        .outerCircleColor(R.color.colorPrimary)
                        .transparentTarget(true),
                new TapTargetView.Listener() {
                    @Override
@@ -544,10 +544,6 @@ public class FavoritesScene extends BaseScene implements
                args.putString(GalleryDetailScene.KEY_ACTION, GalleryDetailScene.ACTION_GALLERY_INFO);
                args.putParcelable(GalleryDetailScene.KEY_GALLERY_INFO, gi);
                Announcer announcer = new Announcer(GalleryDetailScene.class).setArgs(args);
-                View thumb;
-                if (null != (thumb = view.findViewById(R.id.thumb))) {
-                    announcer.setTranHelper(new EnterGalleryDetailTransaction(thumb));
-                }
                startScene(announcer);
            }
        }
@@ -34,7 +34,6 @@ import android.text.style.RelativeSizeSpan;
 import android.text.style.StyleSpan;
 import android.text.style.URLSpan;
 import android.util.Log;
-import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewAnimationUtils;
@@ -94,7 +93,6 @@ import java.util.ArrayList;
 import java.util.List;

 import rikka.core.res.ResourcesKt;
-import rikka.recyclerview.RecyclerViewKt;

 public final class GalleryCommentsScene extends ToolbarScene
        implements View.OnClickListener, SwipeRefreshLayout.OnRefreshListener {
@@ -176,7 +174,6 @@ public final class GalleryCommentsScene extends ToolbarScene
                                        @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.scene_gallery_comments, container, false);
        mRecyclerView = (EasyRecyclerView) ViewUtils.$$(view, R.id.recycler_view);
-        RecyclerViewKt.fixEdgeEffect(mRecyclerView, false, true);
        TextView tip = (TextView) ViewUtils.$$(view, R.id.tip);
        mEditPanel = ViewUtils.$$(view, R.id.edit_panel);
        mSendImage = (ImageView) ViewUtils.$$(mEditPanel, R.id.send);
@@ -223,7 +220,6 @@ public final class GalleryCommentsScene extends ToolbarScene
        if (itemAnimator instanceof DefaultItemAnimator) {
            ((DefaultItemAnimator) itemAnimator).setSupportsChangeAnimations(false);
        }
-        RecyclerViewKt.addEdgeSpacing(mRecyclerView, 0, 0, 0, 80, TypedValue.COMPLEX_UNIT_DIP);

        mSendImage.setOnClickListener(this);
        mFab.setOnClickListener(this);
@@ -36,15 +36,14 @@ import android.os.Bundle;
 import android.os.Environment;
 import android.text.TextUtils;
 import android.util.Pair;
-import android.view.Gravity;
 import android.view.LayoutInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewAnimationUtils;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.FrameLayout;
-import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.RatingBar;
@@ -59,12 +58,8 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.widget.PopupMenu;
 import androidx.core.content.ContextCompat;
 import androidx.core.view.ViewCompat;
-import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentTransaction;
-import androidx.transition.TransitionInflater;

 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.progressindicator.CircularProgressIndicator;
@@ -105,7 +100,6 @@ import com.hippo.ehviewer.ui.annotation.WholeLifeCircle;
 import com.hippo.ehviewer.widget.GalleryRatingBar;
 import com.hippo.scene.Announcer;
 import com.hippo.scene.SceneFragment;
-import com.hippo.scene.TransitionHelper;
 import com.hippo.text.Html;
 import com.hippo.text.URLImageGetter;
 import com.hippo.util.AppHelper;
@@ -137,7 +131,7 @@ import java.util.List;
 import okhttp3.HttpUrl;
 import rikka.core.res.ResourcesKt;

-public class GalleryDetailScene extends BaseScene implements View.OnClickListener,
+public class GalleryDetailScene extends ToolbarScene implements View.OnClickListener,
        com.hippo.ehviewer.download.DownloadManager.DownloadInfoListener,
        View.OnLongClickListener {

@@ -178,8 +172,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
    @Nullable
    private TextView mCategory;
    @Nullable
-    private ImageView mOtherActions;
-    @Nullable
    private ViewGroup mActionGroup;
    @Nullable
    private TextView mDownload;
@@ -250,8 +242,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
    private View mProgress;
    @Nullable
    private ViewTransition mViewTransition2;
-    @Nullable
-    private PopupMenu mPopupMenu;
    @WholeLifeCircle
    private int mDownloadState;
    @Nullable
@@ -499,10 +489,62 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        outState.putInt(KEY_REQUEST_ID, mRequestId);
    }

+    @Override
+    public int getMenuResId() {
+        return R.menu.scene_gallery_detail;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        setNavigationIcon(R.drawable.v_arrow_left_dark_x24);
+    }
+
+    @Override
+    public void onNavigationClick() {
+        onBackPressed();
+        super.onNavigationClick();
+    }
+
+    @Override
+    public boolean onMenuItemClick(MenuItem item) {
+        int itemId = item.getItemId();
+        if (itemId == R.id.action_open_in_other_app) {
+            String url = getGalleryDetailUrl(false);
+            Activity activity = getMainActivity();
+            if (null != url && null != activity) {
+                UrlOpener.openUrl(activity, url, false);
+            }
+        } else if (itemId == R.id.action_refresh) {
+            if (mState != STATE_REFRESH && mState != STATE_REFRESH_HEADER) {
+                adjustViewVisibility(STATE_REFRESH, true);
+                request();
+            }
+        } else if (itemId == R.id.action_add_tag) {
+            if (mGalleryDetail == null) {
+                return false;
+            }
+            if (mGalleryDetail.apiUid < 0) {
+                showTip(R.string.sign_in_first, LENGTH_LONG);
+                return false;
+            }
+            EditTextDialogBuilder builder = new EditTextDialogBuilder(requireContext(), "", getString(R.string.action_add_tag_tip));
+            builder.setPositiveButton(android.R.string.ok, null);
+            AlertDialog dialog = builder.setTitle(R.string.action_add_tag)
+                    .show();
+            dialog.getButton(DialogInterface.BUTTON_POSITIVE)
+                    .setOnClickListener(v -> {
+                        voteTag(builder.getText().trim(), 1);
+                        dialog.dismiss();
+                    });
+        }
+        return true;
+    }
+
    @Nullable
    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
-                             @Nullable Bundle savedInstanceState) {
+    public View onCreateViewWithToolbar(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
+                                        @Nullable Bundle savedInstanceState) {
        // Get download state
        long gid = getGid();
        if (gid != -1) {
@@ -541,14 +583,12 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        mTitle = (TextView) ViewUtils.$$(mHeader, R.id.title);
        mUploader = (TextView) ViewUtils.$$(mHeader, R.id.uploader);
        mCategory = (TextView) ViewUtils.$$(mHeader, R.id.category);
-        mOtherActions = (ImageView) ViewUtils.$$(mHeader, R.id.other_actions);
        mActionGroup = (ViewGroup) ViewUtils.$$(mHeader, R.id.action_card);
        mDownload = (TextView) ViewUtils.$$(mActionGroup, R.id.download);
        mRead = (TextView) ViewUtils.$$(mActionGroup, R.id.read);

        mUploader.setOnClickListener(this);
        mCategory.setOnClickListener(this);
-        mOtherActions.setOnClickListener(this);
        mDownload.setOnClickListener(this);
        mDownload.setOnLongClickListener(this);
        mRead.setOnClickListener(this);
@@ -558,7 +598,7 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        mBelowHeader = mainView.findViewById(R.id.below_header);
        View belowHeader = mBelowHeader;

-        mInfo = ViewUtils.$$(belowHeader, R.id.info);
+        mInfo = ViewUtils.$$(mHeader, R.id.info);
        mLanguage = (TextView) ViewUtils.$$(mInfo, R.id.language);
        mPages = (TextView) ViewUtils.$$(mInfo, R.id.pages);
        mSize = (TextView) ViewUtils.$$(mInfo, R.id.size);
@@ -650,7 +690,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        mTitle = null;
        mUploader = null;
        mCategory = null;
-        mOtherActions = null;
        mActionGroup = null;
        mDownload = null;
        mRead = null;
@@ -690,8 +729,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        mProgress = null;

        mViewTransition2 = null;
-
-        mPopupMenu = null;
    }

    private boolean prepareData() {
@@ -1084,51 +1121,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
        }
    }

-    private void ensurePopMenu() {
-        if (mPopupMenu != null) {
-            return;
-        }
-
-        Context context = getContext();
-        AssertUtils.assertNotNull(context);
-        PopupMenu popup = new PopupMenu(context, mOtherActions, Gravity.TOP);
-        mPopupMenu = popup;
-        popup.getMenuInflater().inflate(R.menu.scene_gallery_detail, popup.getMenu());
-        popup.setOnMenuItemClickListener(item -> {
-            int itemId = item.getItemId();
-            if (itemId == R.id.action_open_in_other_app) {
-                String url = getGalleryDetailUrl(false);
-                Activity activity = getMainActivity();
-                if (null != url && null != activity) {
-                    UrlOpener.openUrl(activity, url, false);
-                }
-            } else if (itemId == R.id.action_refresh) {
-                if (mState != STATE_REFRESH && mState != STATE_REFRESH_HEADER) {
-                    adjustViewVisibility(STATE_REFRESH, true);
-                    request();
-                }
-            } else if (itemId == R.id.action_add_tag) {
-                if (mGalleryDetail == null) {
-                    return false;
-                }
-                if (mGalleryDetail.apiUid < 0) {
-                    showTip(R.string.sign_in_first, LENGTH_LONG);
-                    return false;
-                }
-                EditTextDialogBuilder builder = new EditTextDialogBuilder(context, "", getString(R.string.action_add_tag_tip));
-                builder.setPositiveButton(android.R.string.ok, null);
-                AlertDialog dialog = builder.setTitle(R.string.action_add_tag)
-                        .show();
-                dialog.getButton(DialogInterface.BUTTON_POSITIVE)
-                        .setOnClickListener(v -> {
-                            voteTag(builder.getText().trim(), 1);
-                            dialog.dismiss();
-                        });
-            }
-            return true;
-        });
-    }
-
    private void showSimilarGalleryList() {
        GalleryDetail gd = mGalleryDetail;
        if (null == gd) {
@@ -1203,11 +1195,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
            if (request()) {
                adjustViewVisibility(STATE_REFRESH, true);
            }
-        } else if (mOtherActions == v) {
-            ensurePopMenu();
-            if (mPopupMenu != null) {
-                mPopupMenu.show();
-            }
        } else if (mUploader == v) {
            String uploader = getUploader();
            if (TextUtils.isEmpty(uploader)) {
@@ -1552,17 +1539,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene

    @Override
    public void onBackPressed() {
-        if (mViewTransition != null && mThumb != null &&
-                mViewTransition.getShownViewIndex() == 0 && mThumb.isShown()) {
-            int[] location = new int[2];
-            mThumb.getLocationInWindow(location);
-            // Only show transaction when thumb can be seen
-            if (location[1] + mThumb.getHeight() > 0) {
-                setTransitionName();
-                finish(new ExitTransaction(mThumb));
-                return;
-            }
-        }
        finish();
    }

@@ -1724,38 +1700,6 @@ public class GalleryDetailScene extends BaseScene implements View.OnClickListene
    private @interface State {
    }

-    private static class ExitTransaction implements TransitionHelper {
-
-        private final View mThumb;
-
-        public ExitTransaction(View thumb) {
-            mThumb = thumb;
-        }
-
-        @Override
-        public boolean onTransition(Context context,
-                                    FragmentTransaction transaction, Fragment exit, Fragment enter) {
-            if (!(enter instanceof GalleryListScene) && !(enter instanceof DownloadsScene) &&
-                    !(enter instanceof FavoritesScene) && !(enter instanceof HistoryScene)) {
-                return false;
-            }
-
-            String transitionName = ViewCompat.getTransitionName(mThumb);
-            if (transitionName != null) {
-                exit.setSharedElementReturnTransition(
-                        TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
-                exit.setExitTransition(
-                        TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
-                enter.setSharedElementEnterTransition(
-                        TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
-                enter.setEnterTransition(
-                        TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
-                transaction.addSharedElement(mThumb, transitionName);
-            }
-            return true;
-        }
-    }
-
    private static class GetGalleryDetailListener extends EhCallback<GalleryDetailScene, GalleryDetail> {

        public GetGalleryDetailListener(Context context, int stageId, String sceneTag) {
@@ -44,7 +44,6 @@ import com.hippo.yorozuya.ViewUtils;
 import java.util.ArrayList;

 import rikka.core.res.ResourcesKt;
-import rikka.recyclerview.RecyclerViewKt;

 public final class GalleryInfoScene extends ToolbarScene {

@@ -174,7 +173,6 @@ public final class GalleryInfoScene extends ToolbarScene {
        mRecyclerView.addItemDecoration(decoration);
        mRecyclerView.setClipToPadding(false);
        mRecyclerView.setHasFixedSize(true);
-        RecyclerViewKt.fixEdgeEffect(mRecyclerView, false, true);
        return view;
    }

@@ -69,7 +69,6 @@ import com.h6ah4i.android.widget.advrecyclerview.draggable.DraggableItemAdapter;
 import com.h6ah4i.android.widget.advrecyclerview.draggable.ItemDraggableRange;
 import com.h6ah4i.android.widget.advrecyclerview.draggable.RecyclerViewDragDropManager;
 import com.h6ah4i.android.widget.advrecyclerview.utils.AbstractDraggableItemViewHolder;
-import com.hippo.app.CheckBoxDialogBuilder;
 import com.hippo.app.EditTextDialogBuilder;
 import com.hippo.drawable.AddDeleteDrawable;
 import com.hippo.drawable.DrawerArrowDrawable;
@@ -614,7 +613,8 @@ public final class GalleryListScene extends BaseScene
        mFabLayout.setOnExpandListener(this);
        addAboveSnackView(mFabLayout);

-        mActionFabDrawable = new AddDeleteDrawable(context, resources.getColor(R.color.primary_drawable_dark));
+        int colorID = ResourcesKt.resolveColor(getTheme(), com.google.android.material.R.attr.colorOnSurface);
+        mActionFabDrawable = new AddDeleteDrawable(context, colorID);
        mFabLayout.getPrimaryFab().setImageDrawable(mActionFabDrawable);

        mSearchFab.setOnClickListener(this);
@@ -658,7 +658,6 @@ public final class GalleryListScene extends BaseScene
                TapTarget.forBounds(bounds,
                                getString(R.string.guide_quick_search_title),
                                getString(R.string.guide_quick_search_text))
-                        .outerCircleColor(R.color.colorPrimary)
                        .transparentTarget(true),
                new TapTargetView.Listener() {
                    @Override
@@ -709,15 +708,10 @@ public final class GalleryListScene extends BaseScene
        if (null == context) {
            return;
        }
-        final CheckBoxDialogBuilder builder = new CheckBoxDialogBuilder(
-                context, getString(R.string.add_quick_search_tip), getString(R.string.get_it), false);
+        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(context);
+        builder.setMessage(R.string.add_quick_search_tip);
        builder.setTitle(R.string.readme);
-        builder.setPositiveButton(android.R.string.ok, (dialog, which) -> {
-            if (builder.isChecked()) {
-                Settings.putQuickSearchTip(false);
-            }
-            showAddQuickSearchDialog(adapter, recyclerView, tip);
-        }).show();
+        builder.show();
    }


@@ -823,11 +817,9 @@ public final class GalleryListScene extends BaseScene
        toolbar.setOnMenuItemClickListener(item -> {
            int id = item.getItemId();
            if (id == R.id.action_add) {
-                if (Settings.getQuickSearchTip()) {
-                    showQuickSearchTipDialog(qsDrawerAdapter, recyclerView, tip);
-                } else {
-                    showAddQuickSearchDialog(qsDrawerAdapter, recyclerView, tip);
-                }
+                showAddQuickSearchDialog(qsDrawerAdapter, recyclerView, tip);
+            } else if (id == R.id.action_help) {
+                showQuickSearchTipDialog(qsDrawerAdapter, recyclerView, tip);
            }
            return true;
        });
@@ -843,22 +835,6 @@ public final class GalleryListScene extends BaseScene
        return view;
    }

-    private boolean checkDoubleClickExit() {
-        if (getStackIndex() != 0) {
-            return false;
-        }
-
-        long time = System.currentTimeMillis();
-        if (time - mPressBackTime > BACK_PRESSED_INTERVAL) {
-            // It is the last scene
-            mPressBackTime = time;
-            showTip(R.string.press_twice_exit, LENGTH_SHORT);
-            return true;
-        } else {
-            return false;
-        }
-    }
-
    @Override
    public void onBackPressed() {
        if (null != mFabLayout && mFabLayout.isExpanded()) {
@@ -866,29 +842,21 @@ public final class GalleryListScene extends BaseScene
            return;
        }

-        boolean handle;
        switch (mState) {
-            default:
            case STATE_NORMAL:
-                handle = checkDoubleClickExit();
+                if (getStackIndex() == 0)
+                    requireActivity().moveTaskToBack(false);
+                else
+                    finish();
                break;
            case STATE_SIMPLE_SEARCH:
-                setState(STATE_NORMAL);
-                handle = true;
-                break;
            case STATE_SEARCH:
                setState(STATE_NORMAL);
-                handle = true;
                break;
            case STATE_SEARCH_SHOW_LIST:
                setState(STATE_SEARCH);
-                handle = true;
                break;
        }
-
-        if (!handle) {
-            finish();
-        }
    }

    public boolean onItemClick(View view, int position) {
@@ -905,10 +873,6 @@ public final class GalleryListScene extends BaseScene
        args.putString(GalleryDetailScene.KEY_ACTION, GalleryDetailScene.ACTION_GALLERY_INFO);
        args.putParcelable(GalleryDetailScene.KEY_GALLERY_INFO, gi);
        Announcer announcer = new Announcer(GalleryDetailScene.class).setArgs(args);
-        View thumb;
-        if (null != (thumb = view.findViewById(R.id.thumb))) {
-            announcer.setTranHelper(new EnterGalleryDetailTransaction(thumb));
-        }
        startScene(announcer);
        return true;
    }
@@ -24,7 +24,6 @@ import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.text.TextUtils;
-import android.util.TypedValue;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
@@ -86,7 +85,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

-import rikka.recyclerview.RecyclerViewKt;
+import rikka.core.res.ResourcesKt;

 public class HistoryScene extends ToolbarScene {

@@ -232,12 +231,10 @@ public class HistoryScene extends ToolbarScene {
        mRecyclerView.addItemDecoration(decoration);
        guardManager.attachRecyclerView(mRecyclerView);
        swipeManager.attachRecyclerView(mRecyclerView);
-        RecyclerViewKt.fixEdgeEffect(mRecyclerView, false, true);
-        RecyclerViewKt.addEdgeSpacing(mRecyclerView, 4, 4, 4, 4, TypedValue.COMPLEX_UNIT_DIP);

        mFastScroller.attachToRecyclerView(mRecyclerView);
        HandlerDrawable handlerDrawable = new HandlerDrawable();
-        handlerDrawable.setColor(com.google.android.material.R.color.material_dynamic_neutral100);
+        handlerDrawable.setColor(ResourcesKt.resolveColor(getTheme(), com.google.android.material.R.attr.colorPrimary));
        mFastScroller.setHandlerDrawable(handlerDrawable);

        updateLazyList();
@@ -347,10 +344,6 @@ public class HistoryScene extends ToolbarScene {
        args.putString(GalleryDetailScene.KEY_ACTION, GalleryDetailScene.ACTION_GALLERY_INFO);
        args.putParcelable(GalleryDetailScene.KEY_GALLERY_INFO, mLazyList.get(position));
        Announcer announcer = new Announcer(GalleryDetailScene.class).setArgs(args);
-        View thumb;
-        if (null != (thumb = view.findViewById(R.id.thumb))) {
-            announcer.setTranHelper(new EnterGalleryDetailTransaction(thumb));
-        }
        startScene(announcer);
        return true;
    }
@@ -1,193 +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.ui.scene;
-
-import android.content.Context;
-import android.hardware.Sensor;
-import android.hardware.SensorManager;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.biometric.BiometricManager;
-import androidx.biometric.BiometricPrompt;
-
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.Settings;
-import com.hippo.ehviewer.ui.MainActivity;
-import com.hippo.widget.lockpattern.LockPatternUtils;
-import com.hippo.widget.lockpattern.LockPatternView;
-import com.hippo.yorozuya.ObjectUtils;
-import com.hippo.yorozuya.ViewUtils;
-
-import java.util.List;
-import java.util.concurrent.Executors;
-
-public class SecurityScene extends SolidScene implements
-        LockPatternView.OnPatternListener {
-
-    private static final int MAX_RETRY_TIMES = 5;
-    private static final String KEY_RETRY_TIMES = "retry_times";
-
-    @Nullable
-    private LockPatternView mPatternView;
-
-    private SensorManager mSensorManager;
-    private Sensor mAccelerometer;
-    private BiometricPrompt.PromptInfo promptInfo;
-    private BiometricPrompt biometricPrompt;
-    private boolean canAuthenticate = false;
-
-    private int mRetryTimes;
-
-    @Override
-    public boolean needShowLeftDrawer() {
-        return false;
-    }
-
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        Context context = requireContext();
-        mSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
-        if (null != mSensorManager) {
-            mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
-        }
-
-        if (null == savedInstanceState) {
-            mRetryTimes = MAX_RETRY_TIMES;
-        } else {
-            mRetryTimes = savedInstanceState.getInt(KEY_RETRY_TIMES);
-        }
-
-        canAuthenticate = Settings.getEnableFingerprint() &&
-                BiometricManager.from(requireContext()).canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK) == BiometricManager.BIOMETRIC_SUCCESS;
-        biometricPrompt = new BiometricPrompt(this, Executors.newSingleThreadExecutor(), new BiometricPrompt.AuthenticationCallback() {
-            @Override
-            public void onAuthenticationError(int errorCode, @NonNull CharSequence errString) {
-                super.onAuthenticationError(errorCode, errString);
-            }
-
-            @Override
-            public void onAuthenticationSucceeded(@NonNull BiometricPrompt.AuthenticationResult result) {
-                startSceneForCheckStep(CHECK_STEP_SECURITY, getArguments());
-                finish();
-            }
-
-            @Override
-            public void onAuthenticationFailed() {
-                super.onAuthenticationFailed();
-            }
-        });
-        promptInfo = new BiometricPrompt.PromptInfo.Builder()
-                .setTitle(getString(R.string.app_name))
-                .setNegativeButtonText(getString(android.R.string.cancel))
-                .setConfirmationRequired(false)
-                .build();
-    }
-
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-
-        mSensorManager = null;
-        mAccelerometer = null;
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-
-        if (canAuthenticate) {
-            startBiometricPrompt();
-        }
-    }
-
-    private void startBiometricPrompt() {
-        biometricPrompt.authenticate(promptInfo);
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-    }
-
-    @Override
-    public void onSaveInstanceState(@NonNull Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putInt(KEY_RETRY_TIMES, mRetryTimes);
-    }
-
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater,
-                             @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.scene_security, container, false);
-        if (canAuthenticate) {
-            view.setOnClickListener(v -> startBiometricPrompt());
-        }
-
-        mPatternView = (LockPatternView) ViewUtils.$$(view, R.id.pattern_view);
-        mPatternView.setOnPatternListener(this);
-        return view;
-    }
-
-    @Override
-    public void onDestroyView() {
-        super.onDestroyView();
-
-        mPatternView = null;
-    }
-
-    @Override
-    public void onPatternStart() {
-    }
-
-    @Override
-    public void onPatternCleared() {
-    }
-
-    @Override
-    public void onPatternCellAdded(List<LockPatternView.Cell> pattern) {
-    }
-
-    @Override
-    public void onPatternDetected(List<LockPatternView.Cell> pattern) {
-        MainActivity activity = getMainActivity();
-        if (null == activity || null == mPatternView) {
-            return;
-        }
-
-        String enteredPatter = LockPatternUtils.patternToString(pattern);
-        String targetPatter = Settings.getSecurity();
-
-        if (ObjectUtils.equal(enteredPatter, targetPatter)) {
-            startSceneForCheckStep(CHECK_STEP_SECURITY, getArguments());
-            finish();
-        } else {
-            mPatternView.setDisplayMode(LockPatternView.DisplayMode.Wrong);
-            mRetryTimes--;
-            if (mRetryTimes <= 0) {
-                finish();
-            }
-        }
-    }
-}
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.hippo.ehviewer.ui.scene
+
+import android.content.Context
+import android.os.Bundle
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
+import androidx.biometric.BiometricPrompt
+import androidx.biometric.auth.AuthPromptCallback
+import androidx.biometric.auth.startClass2BiometricOrCredentialAuthentication
+import androidx.core.content.ContextCompat
+import androidx.fragment.app.FragmentActivity
+import com.hippo.ehviewer.EhApplication
+import com.hippo.ehviewer.R
+
+class SecurityScene : SolidScene() {
+    override fun needShowLeftDrawer(): Boolean {
+        return false
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        if (isAuthenticationSupported(requireContext()))
+            startAuthentication(getString(R.string.settings_privacy_require_unlock))
+        else
+            onSuccess()
+    }
+
+    private fun startAuthentication(
+        title: String,
+        subtitle: String? = null,
+        confirmationRequired: Boolean = true,
+    ) {
+        startClass2BiometricOrCredentialAuthentication(
+            title = title,
+            subtitle = subtitle,
+            confirmationRequired = confirmationRequired,
+            executor = ContextCompat.getMainExecutor(requireContext()),
+            callback = AuthenticationCallback()
+        )
+    }
+
+    inner class AuthenticationCallback : AuthPromptCallback() {
+        override fun onAuthenticationSucceeded(
+            activity: FragmentActivity?,
+            result: BiometricPrompt.AuthenticationResult
+        ) {
+            onSuccess()
+        }
+
+        override fun onAuthenticationError(
+            activity: FragmentActivity?,
+            errorCode: Int,
+            errString: CharSequence
+        ) {
+            requireActivity().finish()
+        }
+    }
+
+    companion object {
+        fun isAuthenticationSupported(context: Context): Boolean {
+            val authenticators = BiometricManager.Authenticators.BIOMETRIC_WEAK or DEVICE_CREDENTIAL
+            return BiometricManager.from(context)
+                .canAuthenticate(authenticators) == BiometricManager.BIOMETRIC_SUCCESS
+        }
+    }
+
+    private fun onSuccess() {
+        EhApplication.locked = false
+        if (stackIndex == 0)
+            startSceneForCheckStep(CHECK_STEP_SECURITY, arguments)
+        finish()
+    }
+}
@@ -357,7 +357,6 @@ public final class SignInScene extends SolidScene implements EditText.OnEditorAc

    public void onGetProfileEnd() {
        mSigningIn = false;
-        updateAvatar();
        redirectTo();
    }

@@ -1,163 +0,0 @@
-/*
- * Copyright (C) 2015 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.widget;
-
-import android.content.Context;
-import android.os.Bundle;
-import android.os.Parcelable;
-import android.util.AttributeSet;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TableLayout;
-
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.client.EhConfig;
-import com.hippo.widget.CheckTextView;
-import com.hippo.yorozuya.NumberUtils;
-
-public class CategoryTable extends TableLayout implements View.OnLongClickListener {
-
-    private static final String STATE_KEY_SUPER = "super";
-    private static final String STATE_KEY_CATEGORY = "category";
-
-    private CheckTextView mDoujinshi;
-    private CheckTextView mManga;
-    private CheckTextView mArtistCG;
-    private CheckTextView mGameCG;
-    private CheckTextView mWestern;
-    private CheckTextView mNonH;
-    private CheckTextView mImageSets;
-    private CheckTextView mCosplay;
-    private CheckTextView mAsianPorn;
-    private CheckTextView mMisc;
-
-    private CheckTextView[] mOptions;
-
-    public CategoryTable(Context context) {
-        super(context);
-        init();
-    }
-
-    public CategoryTable(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init();
-    }
-
-    public void init() {
-        LayoutInflater inflater = LayoutInflater.from(getContext());
-        inflater.inflate(R.layout.widget_category_table, this);
-
-        ViewGroup row0 = (ViewGroup) getChildAt(0);
-        mDoujinshi = (CheckTextView) row0.getChildAt(0);
-        mManga = (CheckTextView) row0.getChildAt(1);
-
-        ViewGroup row1 = (ViewGroup) getChildAt(1);
-        mArtistCG = (CheckTextView) row1.getChildAt(0);
-        mGameCG = (CheckTextView) row1.getChildAt(1);
-
-        ViewGroup row2 = (ViewGroup) getChildAt(2);
-        mWestern = (CheckTextView) row2.getChildAt(0);
-        mNonH = (CheckTextView) row2.getChildAt(1);
-
-        ViewGroup row3 = (ViewGroup) getChildAt(3);
-        mImageSets = (CheckTextView) row3.getChildAt(0);
-        mCosplay = (CheckTextView) row3.getChildAt(1);
-
-        ViewGroup row4 = (ViewGroup) getChildAt(4);
-        mAsianPorn = (CheckTextView) row4.getChildAt(0);
-        mMisc = (CheckTextView) row4.getChildAt(1);
-
-        mOptions = new CheckTextView[]{
-                mDoujinshi, mManga, mArtistCG, mGameCG, mWestern,
-                mNonH, mImageSets, mCosplay, mAsianPorn, mMisc
-        };
-
-        for (CheckTextView option : mOptions) {
-            option.setOnLongClickListener(this);
-        }
-    }
-
-    @Override
-    public boolean onLongClick(View v) {
-        if (v instanceof CheckTextView) {
-            boolean checked = ((CheckTextView) v).isChecked();
-            for (CheckTextView option : mOptions) {
-                if (option != v) {
-                    option.setChecked(!checked);
-                }
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Get category according to button.
-     *
-     * @return the category of this view
-     */
-    public int getCategory() {
-        int category = 0;
-        if (!mDoujinshi.isChecked()) category |= EhConfig.DOUJINSHI;
-        if (!mManga.isChecked()) category |= EhConfig.MANGA;
-        if (!mArtistCG.isChecked()) category |= EhConfig.ARTIST_CG;
-        if (!mGameCG.isChecked()) category |= EhConfig.GAME_CG;
-        if (!mWestern.isChecked()) category |= EhConfig.WESTERN;
-        if (!mNonH.isChecked()) category |= EhConfig.NON_H;
-        if (!mImageSets.isChecked()) category |= EhConfig.IMAGE_SET;
-        if (!mCosplay.isChecked()) category |= EhConfig.COSPLAY;
-        if (!mAsianPorn.isChecked()) category |= EhConfig.ASIAN_PORN;
-        if (!mMisc.isChecked()) category |= EhConfig.MISC;
-        return category;
-    }
-
-    /**
-     * Set each button checked or not according to category.
-     *
-     * @param category target category
-     */
-    public void setCategory(int category) {
-        mDoujinshi.setChecked(!NumberUtils.int2boolean(category & EhConfig.DOUJINSHI));
-        mManga.setChecked(!NumberUtils.int2boolean(category & EhConfig.MANGA));
-        mArtistCG.setChecked(!NumberUtils.int2boolean(category & EhConfig.ARTIST_CG));
-        mGameCG.setChecked(!NumberUtils.int2boolean(category & EhConfig.GAME_CG));
-        mWestern.setChecked(!NumberUtils.int2boolean(category & EhConfig.WESTERN));
-        mNonH.setChecked(!NumberUtils.int2boolean(category & EhConfig.NON_H));
-        mImageSets.setChecked(!NumberUtils.int2boolean(category & EhConfig.IMAGE_SET));
-        mCosplay.setChecked(!NumberUtils.int2boolean(category & EhConfig.COSPLAY));
-        mAsianPorn.setChecked(!NumberUtils.int2boolean(category & EhConfig.ASIAN_PORN));
-        mMisc.setChecked(!NumberUtils.int2boolean(category & EhConfig.MISC));
-    }
-
-    @Override
-    public Parcelable onSaveInstanceState() {
-        final Bundle state = new Bundle();
-        state.putParcelable(STATE_KEY_SUPER, super.onSaveInstanceState());
-        state.putInt(STATE_KEY_CATEGORY, getCategory());
-        return state;
-    }
-
-    @Override
-    public void onRestoreInstanceState(Parcelable state) {
-        if (state instanceof Bundle) {
-            final Bundle savedState = (Bundle) state;
-            super.onRestoreInstanceState(savedState.getParcelable(STATE_KEY_SUPER));
-            setCategory(savedState.getInt(STATE_KEY_CATEGORY));
-        }
-    }
-}
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.hippo.ehviewer.widget;

 import android.content.Context;
@@ -28,6 +28,7 @@ public class FixedThumb extends LoadImageView {

    private float minAspect;
    private float maxAspect;
+    private boolean alwaysCutAndScale;

    public FixedThumb(Context context) {
        super(context);
@@ -48,6 +49,7 @@ public class FixedThumb extends LoadImageView {
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.FixedThumb, defStyleAttr, defStyleRes);
        minAspect = a.getFloat(R.styleable.FixedThumb_minAspect, 0.0f);
        maxAspect = a.getFloat(R.styleable.FixedThumb_maxAspect, 0.0f);
+        alwaysCutAndScale = a.getBoolean(R.styleable.FixedThumb_alwaysCutAndScale, false);
        a.recycle();
    }

@@ -58,6 +60,10 @@ public class FixedThumb extends LoadImageView {

    @Override
    public void onPreSetImageDrawable(Drawable drawable, boolean isTarget) {
+        if (alwaysCutAndScale) {
+            setScaleType(ScaleType.CENTER_CROP);
+            return;
+        }
        if (isTarget && drawable != null) {
            int width = drawable.getIntrinsicWidth();
            int height = drawable.getIntrinsicHeight();
@@ -18,6 +18,7 @@ package com.hippo.ehviewer.widget;

 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Color;
 import android.graphics.Paint;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
@@ -60,9 +61,9 @@ public class GalleryGuideView extends ViewGroup implements View.OnClickListener
    }

    private void init(Context context) {
-        mBgColor = ResourcesKt.resolveColor(context.getTheme(), R.attr.guideBackgroundColor);
+        mBgColor = Color.GRAY;
        mPaint = new Paint();
-        mPaint.setColor(ResourcesKt.resolveColor(context.getTheme(), R.attr.guideTitleColor));
+        mPaint.setColor(Color.WHITE);
        mPaint.setStyle(Paint.Style.STROKE);
        mPaint.setStrokeWidth(context.getResources().getDimension(R.dimen.gallery_guide_divider_width));
        setOnClickListener(this);
@@ -141,7 +141,7 @@ public final class ImageSearchLayout extends LinearLayout implements View.OnClic
                bitmap.compress(Bitmap.CompressFormat.JPEG, 90, os);
                mImagePath = temp.getPath();
                mPreview.setImageBitmap(bitmap);
-                mPreview.setVisibility(VISIBLE);
+                ((View) mPreview.getParent()).setVisibility(VISIBLE);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } finally {
@@ -166,7 +166,7 @@ public final class ImageSearchLayout extends LinearLayout implements View.OnClic
            }
            mImagePath = imagePath;
            mPreview.setImageBitmap(bitmap);
-            mPreview.setVisibility(VISIBLE);
+            ((View) mPreview.getParent()).setVisibility(VISIBLE);
        } catch (FileNotFoundException e) {
            // Ignore
        } finally {
@@ -29,6 +29,7 @@ import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.util.AttributeSet;
+import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -278,8 +279,10 @@ public class SearchBar extends MaterialCardView implements View.OnClickListener,
        if (v == mTitleTextView) {
            mHelper.onClickTitle();
        } else if (v == mMenuButton) {
+            v.performHapticFeedback(HapticFeedbackConstants.CLOCK_TICK);
            mHelper.onClickLeftIcon();
        } else if (v == mActionButton) {
+            v.performHapticFeedback(HapticFeedbackConstants.CLOCK_TICK);
            mHelper.onClickRightIcon();
        }
    }
@@ -1,403 +0,0 @@
-/*
- * Copyright (C) 2015 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.widget;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.content.res.Resources;
-import android.net.Uri;
-import android.os.Bundle;
-import android.os.Parcelable;
-import android.util.AttributeSet;
-import android.util.SparseArray;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.CompoundButton;
-import android.widget.FrameLayout;
-import android.widget.ImageView;
-import android.widget.Switch;
-import android.widget.TextView;
-
-import androidx.annotation.IntDef;
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.DefaultItemAnimator;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.google.android.material.dialog.MaterialAlertDialogBuilder;
-import com.google.android.material.tabs.TabLayout;
-import com.hippo.easyrecyclerview.EasyRecyclerView;
-import com.hippo.easyrecyclerview.MarginItemDecoration;
-import com.hippo.easyrecyclerview.SimpleHolder;
-import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.client.data.ListUrlBuilder;
-import com.hippo.ehviewer.client.exception.EhException;
-import com.hippo.widget.RadioGridGroup;
-import com.hippo.yorozuya.ViewUtils;
-
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-
-public class SearchLayout extends EasyRecyclerView implements CompoundButton.OnCheckedChangeListener,
-        View.OnClickListener, ImageSearchLayout.Helper, TabLayout.OnTabSelectedListener {
-
-    public static final int SEARCH_MODE_NORMAL = 0;
-    public static final int SEARCH_MODE_IMAGE = 1;
-    private static final String STATE_KEY_SUPER = "super";
-    private static final String STATE_KEY_SEARCH_MODE = "search_mode";
-    private static final String STATE_KEY_ENABLE_ADVANCE = "enable_advance";
-    private static final int ITEM_TYPE_NORMAL = 0;
-    private static final int ITEM_TYPE_NORMAL_ADVANCE = 1;
-    private static final int ITEM_TYPE_IMAGE = 2;
-    private static final int ITEM_TYPE_ACTION = 3;
-    private static final int[] SEARCH_ITEM_COUNT_ARRAY = {
-            3, 2
-    };
-    private static final int[][] SEARCH_ITEM_TYPE = {
-            {ITEM_TYPE_NORMAL, ITEM_TYPE_NORMAL_ADVANCE, ITEM_TYPE_ACTION}, // SEARCH_MODE_NORMAL
-            {ITEM_TYPE_IMAGE, ITEM_TYPE_ACTION}, // SEARCH_MODE_IMAGE
-    };
-    private LayoutInflater mInflater;
-    @SearchMode
-    private int mSearchMode = SEARCH_MODE_NORMAL;
-    private boolean mEnableAdvance = false;
-    private View mNormalView;
-    private CategoryTable mCategoryTable;
-    private RadioGridGroup mNormalSearchMode;
-    private ImageView mNormalSearchModeHelp;
-    private Switch mEnableAdvanceSwitch;
-    private View mAdvanceView;
-    private AdvanceSearchTable mTableAdvanceSearch;
-    private ImageSearchLayout mImageView;
-    private View mActionView;
-    private TabLayout mAction;
-    private LinearLayoutManager mLayoutManager;
-    private SearchAdapter mAdapter;
-    private Helper mHelper;
-
-    public SearchLayout(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init(context);
-    }
-
-    public SearchLayout(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-        init(context);
-    }
-
-    @SuppressLint("InflateParams")
-    private void init(Context context) {
-        Resources resources = context.getResources();
-        mInflater = LayoutInflater.from(context);
-
-        mLayoutManager = new SearchLayoutManager(context);
-        mAdapter = new SearchAdapter();
-        mAdapter.setHasStableIds(true);
-        setLayoutManager(mLayoutManager);
-        setAdapter(mAdapter);
-        setHasFixedSize(true);
-        setClipToPadding(false);
-        ((DefaultItemAnimator) getItemAnimator()).setSupportsChangeAnimations(false);
-        int interval = resources.getDimensionPixelOffset(R.dimen.search_layout_interval);
-        int paddingH = resources.getDimensionPixelOffset(R.dimen.search_layout_margin_h);
-        int paddingV = resources.getDimensionPixelOffset(R.dimen.search_layout_margin_v);
-        MarginItemDecoration decoration = new MarginItemDecoration(
-                interval, paddingH, paddingV, paddingH, paddingV);
-        addItemDecoration(decoration);
-        decoration.applyPaddings(this);
-
-        // Create normal view
-        View normalView = mInflater.inflate(R.layout.search_normal, null);
-        mNormalView = normalView;
-        mCategoryTable = normalView.findViewById(R.id.search_category_table);
-        mNormalSearchMode = normalView.findViewById(R.id.normal_search_mode);
-        mNormalSearchModeHelp = normalView.findViewById(R.id.normal_search_mode_help);
-        mEnableAdvanceSwitch = normalView.findViewById(R.id.search_enable_advance);
-        mNormalSearchModeHelp.setOnClickListener(this);
-        mEnableAdvanceSwitch.setOnCheckedChangeListener(this);
-        mEnableAdvanceSwitch.setSwitchPadding(resources.getDimensionPixelSize(R.dimen.switch_padding));
-
-        // Create advance view
-        mAdvanceView = mInflater.inflate(R.layout.search_advance, null);
-        mTableAdvanceSearch = mAdvanceView.findViewById(R.id.search_advance_search_table);
-
-        // Create image view
-        mImageView = (ImageSearchLayout) mInflater.inflate(R.layout.search_image, null);
-        mImageView.setHelper(this);
-
-        // Create action view
-        mActionView = mInflater.inflate(R.layout.search_action, null);
-        mActionView.setLayoutParams(new RecyclerView.LayoutParams(
-                ViewGroup.LayoutParams.MATCH_PARENT,
-                ViewGroup.LayoutParams.WRAP_CONTENT));
-        mAction = mActionView.findViewById(R.id.action);
-        mAction.addOnTabSelectedListener(this);
-    }
-
-    public void setHelper(Helper helper) {
-        mHelper = helper;
-    }
-
-    public void scrollSearchContainerToTop() {
-        mLayoutManager.scrollToPositionWithOffset(0, 0);
-    }
-
-    public void setImageUri(Uri imageUri) {
-        mImageView.setImageUri(imageUri);
-    }
-
-    public void setNormalSearchMode(int id) {
-        mNormalSearchMode.check(id);
-    }
-
-    @Override
-    public void onSelectImage() {
-        if (mHelper != null) {
-            mHelper.onSelectImage();
-        }
-    }
-
-    @Override
-    protected void dispatchSaveInstanceState(@NonNull SparseArray<Parcelable> container) {
-        super.dispatchSaveInstanceState(container);
-
-        mNormalView.saveHierarchyState(container);
-        mAdvanceView.saveHierarchyState(container);
-        mImageView.saveHierarchyState(container);
-        mActionView.saveHierarchyState(container);
-    }
-
-    @Override
-    protected void dispatchRestoreInstanceState(@NonNull SparseArray<Parcelable> container) {
-        super.dispatchRestoreInstanceState(container);
-
-        mNormalView.restoreHierarchyState(container);
-        mAdvanceView.restoreHierarchyState(container);
-        mImageView.restoreHierarchyState(container);
-        mActionView.restoreHierarchyState(container);
-    }
-
-    @Override
-    public Parcelable onSaveInstanceState() {
-        final Bundle state = new Bundle();
-        state.putParcelable(STATE_KEY_SUPER, super.onSaveInstanceState());
-        state.putInt(STATE_KEY_SEARCH_MODE, mSearchMode);
-        state.putBoolean(STATE_KEY_ENABLE_ADVANCE, mEnableAdvance);
-        return state;
-    }
-
-    @Override
-    public void onRestoreInstanceState(Parcelable state) {
-        if (state instanceof Bundle) {
-            final Bundle savedState = (Bundle) state;
-            super.onRestoreInstanceState(savedState.getParcelable(STATE_KEY_SUPER));
-            mSearchMode = savedState.getInt(STATE_KEY_SEARCH_MODE);
-            mEnableAdvance = savedState.getBoolean(STATE_KEY_ENABLE_ADVANCE);
-        }
-    }
-
-    @Override
-    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-        if (buttonView == mEnableAdvanceSwitch) {
-            post(() -> {
-                mEnableAdvance = isChecked;
-                if (mSearchMode == SEARCH_MODE_NORMAL) {
-                    if (mEnableAdvance) {
-                        mAdapter.notifyItemInserted(1);
-                    } else {
-                        mAdapter.notifyItemRemoved(1);
-                    }
-
-                    if (mHelper != null) {
-                        mHelper.onChangeSearchMode();
-                    }
-                }
-            });
-
-        }
-    }
-
-    @SuppressLint("NonConstantResourceId")
-    public void formatListUrlBuilder(ListUrlBuilder urlBuilder, String query) throws EhException {
-        urlBuilder.reset();
-
-        switch (mSearchMode) {
-            case SEARCH_MODE_NORMAL:
-                int nsMode = mNormalSearchMode.getCheckedRadioButtonId();
-                if (nsMode == R.id.search_subscription_search) {
-                    urlBuilder.setMode(ListUrlBuilder.MODE_SUBSCRIPTION);
-                } else if (nsMode == R.id.search_specify_uploader) {
-                    urlBuilder.setMode(ListUrlBuilder.MODE_UPLOADER);
-                } else if (nsMode == R.id.search_specify_tag) {
-                    urlBuilder.setMode(ListUrlBuilder.MODE_TAG);
-                } else {
-                    urlBuilder.setMode(ListUrlBuilder.MODE_NORMAL);
-                }
-                urlBuilder.setKeyword(query);
-                urlBuilder.setCategory(mCategoryTable.getCategory());
-                if (mEnableAdvance) {
-                    urlBuilder.setAdvanceSearch(mTableAdvanceSearch.getAdvanceSearch());
-                    urlBuilder.setMinRating(mTableAdvanceSearch.getMinRating());
-                    urlBuilder.setPageFrom(mTableAdvanceSearch.getPageFrom());
-                    urlBuilder.setPageTo(mTableAdvanceSearch.getPageTo());
-                }
-                break;
-            case SEARCH_MODE_IMAGE:
-                urlBuilder.setMode(ListUrlBuilder.MODE_IMAGE_SEARCH);
-                mImageView.formatListUrlBuilder(urlBuilder);
-                break;
-        }
-    }
-
-    @Override
-    public void onClick(View v) {
-        if (mNormalSearchModeHelp == v) {
-            new MaterialAlertDialogBuilder(getContext())
-                    .setMessage(R.string.search_tip)
-                    .show();
-        }
-    }
-
-    @Override
-    public void onTabSelected(TabLayout.Tab tab) {
-        post(() -> setSearchMode(tab.getPosition()));
-    }
-
-    public void setSearchMode(@SearchMode int mode) {
-        int oldItemCount = mAdapter.getItemCount();
-
-        mSearchMode = mode;
-
-        int newItemCount = mAdapter.getItemCount();
-
-        mAdapter.notifyItemRangeRemoved(0, oldItemCount - 1);
-        mAdapter.notifyItemRangeInserted(0, newItemCount - 1);
-
-        if (mHelper != null) {
-            mHelper.onChangeSearchMode();
-        }
-    }
-
-    @Override
-    public void onTabUnselected(TabLayout.Tab tab) {
-
-    }
-
-    @Override
-    public void onTabReselected(TabLayout.Tab tab) {
-
-    }
-
-    @IntDef({SEARCH_MODE_NORMAL, SEARCH_MODE_IMAGE})
-    @Retention(RetentionPolicy.SOURCE)
-    private @interface SearchMode {
-    }
-
-    public interface Helper {
-        void onChangeSearchMode();
-
-        void onSelectImage();
-    }
-
-    static class SearchLayoutManager extends LinearLayoutManager {
-
-        public SearchLayoutManager(Context context) {
-            super(context);
-        }
-
-        @Override
-        public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
-            try {
-                super.onLayoutChildren(recycler, state);
-            } catch (IndexOutOfBoundsException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-
-    private class SearchAdapter extends EasyRecyclerView.Adapter<SimpleHolder> {
-
-        @Override
-        public int getItemCount() {
-            int count = SEARCH_ITEM_COUNT_ARRAY[mSearchMode];
-            if (mSearchMode == SEARCH_MODE_NORMAL && !mEnableAdvance) {
-                count--;
-            }
-            return count;
-        }
-
-        @Override
-        public int getItemViewType(int position) {
-            int type = SEARCH_ITEM_TYPE[mSearchMode][position];
-            if (mSearchMode == SEARCH_MODE_NORMAL && position == 1 && !mEnableAdvance) {
-                type = ITEM_TYPE_ACTION;
-            }
-            return type;
-        }
-
-        @NonNull
-        @Override
-        public SimpleHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-            View view;
-
-            if (viewType == ITEM_TYPE_ACTION) {
-                ViewUtils.removeFromParent(mActionView);
-                view = mActionView;
-            } else {
-                view = mInflater.inflate(R.layout.search_category, parent, false);
-                TextView title = view.findViewById(R.id.category_title);
-                FrameLayout content = view.findViewById(R.id.category_content);
-                switch (viewType) {
-                    case ITEM_TYPE_NORMAL:
-                        title.setText(R.string.search_normal);
-                        ViewUtils.removeFromParent(mNormalView);
-                        content.addView(mNormalView);
-                        break;
-                    case ITEM_TYPE_NORMAL_ADVANCE:
-                        title.setText(R.string.search_advance);
-                        ViewUtils.removeFromParent(mAdvanceView);
-                        content.addView(mAdvanceView);
-                        break;
-                    case ITEM_TYPE_IMAGE:
-                        title.setText(R.string.search_image);
-                        ViewUtils.removeFromParent(mImageView);
-                        content.addView(mImageView);
-                        break;
-                }
-            }
-
-            return new SimpleHolder(view);
-        }
-
-        @Override
-        public void onBindViewHolder(SimpleHolder holder, int position) {
-            if (holder.getItemViewType() == ITEM_TYPE_ACTION) {
-                mAction.selectTab(mAction.getTabAt(mSearchMode));
-            }
-        }
-
-        @Override
-        public long getItemId(int position) {
-            int type = SEARCH_ITEM_TYPE[mSearchMode][position];
-            if (mSearchMode == SEARCH_MODE_NORMAL && position == 1 && !mEnableAdvance) {
-                type = ITEM_TYPE_ACTION;
-            }
-            return type;
-        }
-    }
-}
@@ -0,0 +1,359 @@
+/*
+ * Copyright 2022 Tarsin Norbin
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.hippo.ehviewer.widget
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.SharedPreferences
+import android.net.Uri
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.*
+import androidx.annotation.IntDef
+import androidx.core.content.edit
+import androidx.preference.PreferenceManager
+import androidx.recyclerview.widget.DefaultItemAnimator
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.google.android.material.chip.Chip
+import com.google.android.material.chip.ChipGroup
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayout.OnTabSelectedListener
+import com.hippo.easyrecyclerview.EasyRecyclerView
+import com.hippo.easyrecyclerview.MarginItemDecoration
+import com.hippo.easyrecyclerview.SimpleHolder
+import com.hippo.ehviewer.R
+import com.hippo.ehviewer.client.EhConfig
+import com.hippo.ehviewer.client.data.ListUrlBuilder
+import com.hippo.ehviewer.client.exception.EhException
+import com.hippo.widget.RadioGridGroup
+import com.hippo.yorozuya.NumberUtils
+import com.hippo.yorozuya.ViewUtils
+
+@SuppressLint("InflateParams")
+class SearchLayout @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : EasyRecyclerView(context, attrs), CompoundButton.OnCheckedChangeListener, View.OnClickListener,
+    ImageSearchLayout.Helper, OnTabSelectedListener {
+
+    @SearchMode
+    private var mSearchMode = SEARCH_MODE_NORMAL
+    private var mEnableAdvance = false
+    private var mCategoryGroup: ChipGroup
+    private var mNormalView: View
+    private var mNormalSearchMode: RadioGridGroup
+    private var mNormalSearchModeHelp: ImageView
+    private var mEnableAdvanceSwitch: CheckBox
+    private var mAdvanceView: View
+    private var mTableAdvanceSearch: AdvanceSearchTable
+    private var mImageView: ImageSearchLayout
+    private var mActionView: View
+    private var mAction: TabLayout
+    private var mAdapter: SearchAdapter
+    private var mHelper: Helper? = null
+    private val mSharePref: SharedPreferences
+    private val mInflater: LayoutInflater
+
+    init {
+        mSharePref = PreferenceManager.getDefaultSharedPreferences(context)
+        mInflater = LayoutInflater.from(context)
+        val resources = context.resources
+        layoutManager = SearchLayoutManager(context)
+        mAdapter = SearchAdapter()
+        mAdapter.setHasStableIds(true)
+        adapter = mAdapter
+        setHasFixedSize(true)
+        clipToPadding = false
+        (itemAnimator as DefaultItemAnimator?)?.supportsChangeAnimations = false
+        val interval = resources.getDimensionPixelOffset(R.dimen.search_layout_interval)
+        val paddingH = resources.getDimensionPixelOffset(R.dimen.search_layout_margin_h)
+        val paddingV = resources.getDimensionPixelOffset(R.dimen.search_layout_margin_v)
+        val decoration = MarginItemDecoration(
+            interval, paddingH, paddingV, paddingH, paddingV
+        )
+        addItemDecoration(decoration)
+        decoration.applyPaddings(this)
+        // Create normal view
+        mNormalView = mInflater.inflate(R.layout.search_normal, null)
+        val mCategoryStored = mSharePref.getInt(SEARCH_CATEGORY_PREF, EhConfig.ALL_CATEGORY)
+        mCategoryGroup = mNormalView.findViewById(R.id.search_category_chipgroup)
+        for (mPair in mCategoryTable) {
+            val mChip = IdentifiedChip(context)
+            mChip.isCheckable = true
+            mChip.setText(mPair.second)
+            mChip.idt = mPair.first
+            mChip.isChecked = NumberUtils.int2boolean(mPair.first and mCategoryStored)
+            mChip.setOnLongClickListener {
+                mCategoryGroup.clearCheck()
+                mChip.isChecked = true
+                true
+            }
+            mCategoryGroup.addView(mChip)
+        }
+        mCategoryGroup.setOnCheckedStateChangeListener { _, checkedIds ->
+            var mCategory = 0
+            for (index in checkedIds) {
+                mCategory = mCategory or findViewById<IdentifiedChip>(index).idt
+            }
+            mSharePref.edit { putInt(SEARCH_CATEGORY_PREF, mCategory) }
+        }
+        mNormalSearchMode = mNormalView.findViewById(R.id.normal_search_mode)
+        mNormalSearchModeHelp = mNormalView.findViewById(R.id.normal_search_mode_help)
+        mEnableAdvanceSwitch = mNormalView.findViewById(R.id.search_enable_advance)
+        mNormalSearchModeHelp.setOnClickListener(this)
+        mEnableAdvanceSwitch.setOnCheckedChangeListener(this)
+        // Create advance view
+        mAdvanceView = mInflater.inflate(R.layout.search_advance, null)
+        mTableAdvanceSearch = mAdvanceView.findViewById(R.id.search_advance_search_table)
+        // Create image view
+        mImageView = mInflater.inflate(R.layout.search_image, null) as ImageSearchLayout
+        mImageView.setHelper(this)
+        // Create action view
+        mActionView = mInflater.inflate(R.layout.search_action, null)
+        mActionView.layoutParams = LayoutParams(
+            ViewGroup.LayoutParams.MATCH_PARENT,
+            ViewGroup.LayoutParams.WRAP_CONTENT
+        )
+        mAction = mActionView.findViewById(R.id.action)
+        mAction.addOnTabSelectedListener(this)
+    }
+
+
+    fun setHelper(helper: Helper?) {
+        mHelper = helper
+    }
+
+    fun scrollSearchContainerToTop() {
+        (layoutManager as LinearLayoutManager).scrollToPositionWithOffset(0, 0)
+    }
+
+    fun setImageUri(imageUri: Uri?) {
+        mImageView.setImageUri(imageUri)
+    }
+
+    fun setNormalSearchMode(id: Int) {
+        mNormalSearchMode.check(id)
+    }
+
+    override fun onSelectImage() {
+        if (mHelper != null) {
+            mHelper!!.onSelectImage()
+        }
+    }
+
+    override fun onCheckedChanged(buttonView: CompoundButton, isChecked: Boolean) {
+        if (buttonView === mEnableAdvanceSwitch) {
+            post {
+                mEnableAdvance = isChecked
+                if (mSearchMode == SEARCH_MODE_NORMAL) {
+                    if (mEnableAdvance) {
+                        mAdapter.notifyItemInserted(1)
+                    } else {
+                        mAdapter.notifyItemRemoved(1)
+                    }
+                    if (mHelper != null) {
+                        mHelper!!.onChangeSearchMode()
+                    }
+                }
+            }
+        }
+    }
+
+    @SuppressLint("NonConstantResourceId")
+    @Throws(EhException::class)
+    fun formatListUrlBuilder(urlBuilder: ListUrlBuilder, query: String?) {
+        urlBuilder.reset()
+        when (mSearchMode) {
+            SEARCH_MODE_NORMAL -> {
+                when (mNormalSearchMode.checkedRadioButtonId) {
+                    R.id.search_subscription_search -> {
+                        urlBuilder.mode = ListUrlBuilder.MODE_SUBSCRIPTION
+                    }
+                    R.id.search_specify_uploader -> {
+                        urlBuilder.mode = ListUrlBuilder.MODE_UPLOADER
+                    }
+                    R.id.search_specify_tag -> {
+                        urlBuilder.mode = ListUrlBuilder.MODE_TAG
+                    }
+                    else -> {
+                        urlBuilder.mode = ListUrlBuilder.MODE_NORMAL
+                    }
+                }
+                urlBuilder.keyword = query
+                urlBuilder.category = PreferenceManager.getDefaultSharedPreferences(context).getInt(
+                    SEARCH_CATEGORY_PREF, 0
+                )
+                if (mEnableAdvance) {
+                    urlBuilder.advanceSearch = mTableAdvanceSearch.advanceSearch
+                    urlBuilder.minRating = mTableAdvanceSearch.minRating
+                    urlBuilder.pageFrom = mTableAdvanceSearch.pageFrom
+                    urlBuilder.pageTo = mTableAdvanceSearch.pageTo
+                }
+            }
+            SEARCH_MODE_IMAGE -> {
+                urlBuilder.mode = ListUrlBuilder.MODE_IMAGE_SEARCH
+                mImageView.formatListUrlBuilder(urlBuilder)
+            }
+        }
+    }
+
+    override fun onClick(v: View) {
+        if (mNormalSearchModeHelp === v) {
+            MaterialAlertDialogBuilder(context)
+                .setMessage(R.string.search_tip)
+                .show()
+        }
+    }
+
+    override fun onTabSelected(tab: TabLayout.Tab) {
+        post { setSearchMode(tab.position) }
+    }
+
+    fun setSearchMode(@SearchMode mode: Int) {
+        val oldItemCount = mAdapter.itemCount
+        mSearchMode = mode
+        val newItemCount = mAdapter.itemCount
+        mAdapter.notifyItemRangeRemoved(0, oldItemCount - 1)
+        mAdapter.notifyItemRangeInserted(0, newItemCount - 1)
+        if (mHelper != null) {
+            mHelper!!.onChangeSearchMode()
+        }
+    }
+
+    override fun onTabUnselected(tab: TabLayout.Tab) {}
+    override fun onTabReselected(tab: TabLayout.Tab) {}
+
+    @IntDef(SEARCH_MODE_NORMAL, SEARCH_MODE_IMAGE)
+    @kotlin.annotation.Retention(AnnotationRetention.SOURCE)
+    private annotation class SearchMode
+    interface Helper {
+        fun onChangeSearchMode()
+        fun onSelectImage()
+    }
+
+    internal class SearchLayoutManager(context: Context?) : LinearLayoutManager(context) {
+        override fun onLayoutChildren(recycler: Recycler, state: State) {
+            try {
+                super.onLayoutChildren(recycler, state)
+            } catch (e: IndexOutOfBoundsException) {
+                e.printStackTrace()
+            }
+        }
+    }
+
+    private inner class SearchAdapter : Adapter<SimpleHolder>() {
+        override fun getItemCount(): Int {
+            var count = SEARCH_ITEM_COUNT_ARRAY[mSearchMode]
+            if (mSearchMode == SEARCH_MODE_NORMAL && !mEnableAdvance) {
+                count--
+            }
+            return count
+        }
+
+        override fun getItemViewType(position: Int): Int {
+            var type = SEARCH_ITEM_TYPE[mSearchMode][position]
+            if (mSearchMode == SEARCH_MODE_NORMAL && position == 1 && !mEnableAdvance) {
+                type = ITEM_TYPE_ACTION
+            }
+            return type
+        }
+
+        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): SimpleHolder {
+            val view: View?
+            if (viewType == ITEM_TYPE_ACTION) {
+                ViewUtils.removeFromParent(mActionView)
+                view = mActionView
+            } else {
+                view = mInflater.inflate(R.layout.search_category, parent, false)
+                val title = view.findViewById<TextView>(R.id.category_title)
+                val content = view.findViewById<FrameLayout>(R.id.category_content)
+                when (viewType) {
+                    ITEM_TYPE_NORMAL -> {
+                        title.setText(R.string.search_normal)
+                        ViewUtils.removeFromParent(mNormalView)
+                        content.addView(mNormalView)
+                    }
+                    ITEM_TYPE_NORMAL_ADVANCE -> {
+                        title.setText(R.string.search_advance)
+                        ViewUtils.removeFromParent(mAdvanceView)
+                        content.addView(mAdvanceView)
+                    }
+                    ITEM_TYPE_IMAGE -> {
+                        title.setText(R.string.search_image)
+                        ViewUtils.removeFromParent(mImageView)
+                        content.addView(mImageView)
+                    }
+                }
+            }
+            return SimpleHolder(view)
+        }
+
+        override fun onBindViewHolder(holder: SimpleHolder, position: Int) {
+            if (holder.itemViewType == ITEM_TYPE_ACTION) {
+                mAction.selectTab(mAction.getTabAt(mSearchMode))
+            }
+        }
+
+        override fun getItemId(position: Int): Long {
+            var type = SEARCH_ITEM_TYPE[mSearchMode][position]
+            if (mSearchMode == SEARCH_MODE_NORMAL && position == 1 && !mEnableAdvance) {
+                type = ITEM_TYPE_ACTION
+            }
+            return type.toLong()
+        }
+    }
+
+    inner class IdentifiedChip @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null
+    ) : Chip(context, attrs, R.attr.filterChipStyle) {
+        var idt = 0
+    }
+
+    companion object {
+        const val SEARCH_MODE_NORMAL = 0
+        const val SEARCH_MODE_IMAGE = 1
+        const val SEARCH_CATEGORY_PREF = "search_pref"
+        private const val ITEM_TYPE_NORMAL = 0
+        private const val ITEM_TYPE_NORMAL_ADVANCE = 1
+        private const val ITEM_TYPE_IMAGE = 2
+        private const val ITEM_TYPE_ACTION = 3
+        private val SEARCH_ITEM_COUNT_ARRAY = intArrayOf(
+            3, 2
+        )
+        private val mCategoryTable: ArrayList<Pair<Int, Int>> = arrayListOf(
+            Pair(EhConfig.DOUJINSHI, R.string.doujinshi),
+            Pair(EhConfig.MANGA, R.string.manga),
+            Pair(EhConfig.ARTIST_CG, R.string.artist_cg),
+            Pair(EhConfig.GAME_CG, R.string.game_cg),
+            Pair(EhConfig.WESTERN, R.string.western),
+            Pair(EhConfig.NON_H, R.string.non_h),
+            Pair(EhConfig.IMAGE_SET, R.string.image_set),
+            Pair(EhConfig.COSPLAY, R.string.cosplay),
+            Pair(EhConfig.ASIAN_PORN, R.string.asian_porn),
+            Pair(EhConfig.MISC, R.string.misc)
+        )
+        private val SEARCH_ITEM_TYPE = arrayOf(
+            intArrayOf(ITEM_TYPE_NORMAL, ITEM_TYPE_NORMAL_ADVANCE, ITEM_TYPE_ACTION), intArrayOf(
+                ITEM_TYPE_IMAGE, ITEM_TYPE_ACTION
+            )
+        )
+    }
+}
@@ -0,0 +1,70 @@
+/*
+ * 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.glgallery;
+
+import android.view.MotionEvent;
+
+class DownUpDetector {
+    private final DownUpListener mListener;
+    private boolean mStillDown;
+
+    public DownUpDetector(DownUpListener listener) {
+        mListener = listener;
+    }
+
+    private void setState(boolean down, MotionEvent e) {
+        if (down == mStillDown) return;
+        mStillDown = down;
+        if (down) {
+            mListener.onDown(e);
+        } else {
+            mListener.onUp(e);
+        }
+    }
+
+    public void onTouchEvent(MotionEvent ev) {
+        switch (ev.getActionMasked()) {
+            case MotionEvent.ACTION_DOWN:
+                setState(true, ev);
+                break;
+            case MotionEvent.ACTION_POINTER_DOWN:
+                mListener.onPointerDown(ev);
+                break;
+            case MotionEvent.ACTION_UP:
+                mListener.onPointerUp(ev);
+                setState(false, ev);
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                setState(false, ev);
+                break;
+        }
+    }
+
+    public boolean isDown() {
+        return mStillDown;
+    }
+
+    public interface DownUpListener {
+        void onDown(MotionEvent e);
+
+        void onUp(MotionEvent e);
+
+        void onPointerDown(MotionEvent e);
+
+        void onPointerUp(MotionEvent e);
+    }
+}
@@ -0,0 +1,137 @@
+/*
+ * 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.glgallery;
+
+import android.content.Context;
+import android.hardware.SensorManager;
+import android.view.ViewConfiguration;
+import android.view.animation.Interpolator;
+
+import com.hippo.glview.anim.Animation;
+
+abstract class Fling extends Animation {
+
+    private static final float DECELERATION_RATE = (float) (Math.log(0.78) / Math.log(0.9));
+    private static final float INFLEXION = 0.35f; // Tension lines cross at (INFLEXION, 1)
+    private static final float START_TENSION = 0.5f;
+    private static final float END_TENSION = 1.0f;
+    private static final float P1 = START_TENSION * INFLEXION;
+    private static final float P2 = 1.0f - END_TENSION * (1.0f - INFLEXION);
+    private static final float FLING_FRICTION = ViewConfiguration.getScrollFriction();
+
+    private static final int NB_SAMPLES = 100;
+    private static final float[] SPLINE_POSITION = new float[NB_SAMPLES + 1];
+    private static final Interpolator FLING_INTERPOLATOR = new Interpolator() {
+        @Override
+        public float getInterpolation(float input) {
+            final int index = (int) (NB_SAMPLES * input);
+            float distanceCoef = 1.f;
+            float velocityCoef;
+            if (index < NB_SAMPLES) {
+                final float t_inf = (float) index / NB_SAMPLES;
+                final float t_sup = (float) (index + 1) / NB_SAMPLES;
+                final float d_inf = SPLINE_POSITION[index];
+                final float d_sup = SPLINE_POSITION[index + 1];
+                velocityCoef = (d_sup - d_inf) / (t_sup - t_inf);
+                distanceCoef = d_inf + (input - t_inf) * velocityCoef;
+            }
+            return distanceCoef;
+        }
+    };
+    private static final float[] SPLINE_TIME = new float[NB_SAMPLES + 1];
+
+    static {
+        float x_min = 0.0f;
+        float y_min = 0.0f;
+        for (int i = 0; i < NB_SAMPLES; i++) {
+            final float alpha = (float) i / NB_SAMPLES;
+
+            float x_max = 1.0f;
+            float x, tx, coef;
+            while (true) {
+                x = x_min + (x_max - x_min) / 2.0f;
+                coef = 3.0f * x * (1.0f - x);
+                tx = coef * ((1.0f - x) * P1 + x * P2) + x * x * x;
+                if (Math.abs(tx - alpha) < 1E-5) break;
+                if (tx > alpha) x_max = x;
+                else x_min = x;
+            }
+            SPLINE_POSITION[i] = coef * ((1.0f - x) * START_TENSION + x) + x * x * x;
+
+            float y_max = 1.0f;
+            float y, dy;
+            while (true) {
+                y = y_min + (y_max - y_min) / 2.0f;
+                coef = 3.0f * y * (1.0f - y);
+                dy = coef * ((1.0f - y) * START_TENSION + y) + y * y * y;
+                if (Math.abs(dy - alpha) < 1E-5) break;
+                if (dy > alpha) y_max = y;
+                else y_min = y;
+            }
+            SPLINE_TIME[i] = coef * ((1.0f - y) * P1 + y * P2) + y * y * y;
+        }
+        SPLINE_POSITION[NB_SAMPLES] = SPLINE_TIME[NB_SAMPLES] = 1.0f;
+    }
+
+    private final float mPhysicalCoeff;
+
+    public Fling(Context context) {
+        final float ppi = context.getResources().getDisplayMetrics().density * 160.0f;
+        mPhysicalCoeff = SensorManager.GRAVITY_EARTH // g (m/s^2)
+                * 39.37f // inch/meter
+                * ppi
+                * 0.84f; // look and feel tuning
+        setInterpolator(FLING_INTERPOLATOR);
+    }
+
+    private double getSplineDeceleration(int velocity) {
+        return Math.log(INFLEXION * Math.abs(velocity) / (FLING_FRICTION * mPhysicalCoeff));
+    }
+
+    /* Returns the duration, expressed in milliseconds */
+    protected int getSplineFlingDuration(int velocity) {
+        final double l = getSplineDeceleration(velocity);
+        final double decelMinusOne = DECELERATION_RATE - 1.0;
+        return (int) (1000.0 * Math.exp(l / decelMinusOne));
+    }
+
+    protected double getSplineFlingDistance(int velocity) {
+        final double l = getSplineDeceleration(velocity);
+        final double decelMinusOne = DECELERATION_RATE - 1.0;
+        return FLING_FRICTION * mPhysicalCoeff * Math.exp(DECELERATION_RATE / decelMinusOne * l);
+    }
+
+    /**
+     * Modifies mDuration to the duration it takes to get from start to newFinal using the
+     * spline interpolation. The previous duration was needed to get to oldFinal.
+     **/
+    protected int adjustDuration(int start, int oldFinal, int newFinal, int duration) {
+        final int oldDistance = oldFinal - start;
+        final int newDistance = newFinal - start;
+        final float x = Math.abs((float) newDistance / oldDistance);
+        final int index = (int) (NB_SAMPLES * x);
+        if (index < NB_SAMPLES) {
+            final float x_inf = (float) index / NB_SAMPLES;
+            final float x_sup = (float) (index + 1) / NB_SAMPLES;
+            final float t_inf = SPLINE_TIME[index];
+            final float t_sup = SPLINE_TIME[index + 1];
+            final float timeCoef = t_inf + (x - x_inf) / (x_sup - x_inf) * (t_sup - t_inf);
+            duration *= timeCoef;
+        }
+        return duration;
+    }
+}
@@ -0,0 +1,197 @@
+/*
+ * 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.glgallery;
+
+import com.hippo.glview.glrenderer.BasicTexture;
+import com.hippo.glview.glrenderer.Texture;
+import com.hippo.glview.image.GLImageMovableTextView;
+import com.hippo.glview.image.ImageMovableTextTexture;
+import com.hippo.glview.image.ImageTexture;
+import com.hippo.glview.view.Gravity;
+import com.hippo.glview.widget.GLFrameLayout;
+import com.hippo.glview.widget.GLLinearLayout;
+import com.hippo.glview.widget.GLProgressView;
+import com.hippo.glview.widget.GLTextureView;
+
+public class GalleryPageView extends GLFrameLayout {
+
+    public static final int INVALID_INDEX = -1;
+
+    public static final float PROGRESS_GONE = -1.0f;
+    public static final float PROGRESS_INDETERMINATE = -2.0f;
+
+    private final ImageView mImage;
+    private final GLLinearLayout mInfo;
+    private final GLImageMovableTextView mPage;
+    private final GLTextureView mError;
+    private final GLProgressView mProgress;
+
+    private final int mMinHeight;
+
+    private int mIndex = INVALID_INDEX;
+
+    public GalleryPageView(ImageMovableTextTexture pageTextTexture,
+                           int progressColor, int progressBgColor, int progressSize,
+                           int minHeight, int infoInterval) {
+        // Add image
+        mImage = new ImageView();
+        GravityLayoutParams glp = new GravityLayoutParams(LayoutParams.MATCH_PARENT,
+                LayoutParams.MATCH_PARENT);
+        addComponent(mImage, glp);
+
+        // Add other panel
+        mInfo = new GLLinearLayout();
+        mInfo.setOrientation(GLLinearLayout.VERTICAL);
+        mInfo.setInterval(infoInterval);
+        glp = new GravityLayoutParams(LayoutParams.WRAP_CONTENT,
+                LayoutParams.WRAP_CONTENT);
+        glp.gravity = Gravity.CENTER;
+        addComponent(mInfo, glp);
+
+        // Add page
+        mPage = new GLImageMovableTextView();
+        mPage.setTextTexture(pageTextTexture);
+        GLLinearLayout.LayoutParams lp = new GLLinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
+                LayoutParams.WRAP_CONTENT);
+        lp.gravity = Gravity.CENTER_HORIZONTAL;
+        mInfo.addComponent(mPage, lp);
+
+        // Add error
+        mError = new GLTextureView();
+        lp = new GLLinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
+                LayoutParams.WRAP_CONTENT);
+        lp.gravity = Gravity.CENTER_HORIZONTAL;
+        mInfo.addComponent(mError, lp);
+
+        // Add progress
+        mProgress = new GLProgressView();
+        mProgress.setBgColor(progressBgColor);
+        mProgress.setColor(progressColor);
+        mProgress.setMinimumWidth(progressSize);
+        mProgress.setMinimumHeight(progressSize);
+        lp = new GLLinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
+                LayoutParams.WRAP_CONTENT);
+        lp.gravity = Gravity.CENTER_HORIZONTAL;
+        mInfo.addComponent(mProgress, lp);
+
+        mMinHeight = minHeight;
+    }
+
+    @Override
+    protected int getSuggestedMinimumHeight() {
+        // The height of the actual image may be smaller than mPageMinHeight.
+        // Set min height as 0 when the image is visible.
+        // For PageLayoutManager, min height is useless.
+        if (mImage.getVisibility() == VISIBLE) {
+            return 0;
+        } else {
+            return mMinHeight;
+        }
+    }
+
+    int getIndex() {
+        return mIndex;
+    }
+
+    void setIndex(int index) {
+        mIndex = index;
+    }
+
+    public void showImage() {
+        mImage.setVisibility(VISIBLE);
+        mInfo.setVisibility(GONE);
+    }
+
+    public void showInfo() {
+        // For image valid rect
+        mImage.setVisibility(INVISIBLE);
+        mInfo.setVisibility(VISIBLE);
+    }
+
+    private void unbindImage() {
+        ImageTexture texture = mImage.getImageTexture();
+        if (texture != null) {
+            mImage.setImageTexture(null);
+            texture.recycle();
+        }
+    }
+
+    public void setImage(ImageTexture imageTexture) {
+        unbindImage();
+        if (imageTexture != null) {
+            mImage.setImageTexture(imageTexture);
+        }
+    }
+
+    public void setPage(int page) {
+        mPage.setVisibility(VISIBLE);
+        mPage.setText(Integer.toString(page));
+    }
+
+    public void hidePage() {
+        mPage.setVisibility(GONE);
+    }
+
+    public void setProgress(float progress) {
+        if (progress == PROGRESS_GONE) {
+            mProgress.setVisibility(GONE);
+        } else if (progress == PROGRESS_INDETERMINATE) {
+            mProgress.setVisibility(VISIBLE);
+            mProgress.setIndeterminate(true);
+        } else {
+            mProgress.setVisibility(VISIBLE);
+            mProgress.setIndeterminate(false);
+            mProgress.setProgress(progress);
+        }
+    }
+
+    private void unbindError() {
+        Texture texture = mError.getTexture();
+        if (texture != null) {
+            mError.setTexture(null);
+            if (texture instanceof BasicTexture) {
+                ((BasicTexture) texture).recycle();
+            }
+        }
+    }
+
+    public void setError(String error, GalleryView galleryView) {
+        unbindError();
+        if (error == null) {
+            mError.setVisibility(GONE);
+        } else {
+            mError.setVisibility(VISIBLE);
+            galleryView.bindErrorView(mError, error);
+        }
+    }
+
+    ImageView getImageView() {
+        return mImage;
+    }
+
+    boolean isLoaded() {
+        return mImage.getVisibility() == VISIBLE;
+    }
+
+    boolean isError() {
+        return mError.getVisibility() == VISIBLE;
+    }
+
+    boolean isUnderInfo(float x, float y) {
+        return mInfo.bounds().contains((int) x, (int) y);
+    }
+}
@@ -0,0 +1,269 @@
+/*
+ * 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.glgallery;
+
+import android.util.LruCache;
+
+import androidx.annotation.IntDef;
+import androidx.annotation.UiThread;
+
+import com.hippo.glview.glrenderer.GLCanvas;
+import com.hippo.glview.image.ImageWrapper;
+import com.hippo.glview.view.GLRoot;
+import com.hippo.image.Image;
+import com.hippo.yorozuya.ConcurrentPool;
+import com.hippo.yorozuya.MathUtils;
+import com.hippo.yorozuya.OSUtils;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+public abstract class GalleryProvider {
+
+    public static final int STATE_WAIT = -1;
+    public static final int STATE_ERROR = -2;
+
+    private final ConcurrentPool<NotifyTask> mNotifyTaskPool = new ConcurrentPool<>(5);
+    private final ImageCache mImageCache = new ImageCache();
+    private volatile Listener mListener;
+    private volatile GLRoot mGLRoot;
+    private boolean mStarted = false;
+
+    @UiThread
+    public void start() {
+        OSUtils.checkMainLoop();
+
+        if (mStarted) {
+            throw new IllegalStateException("Can't start it twice");
+        }
+        mStarted = true;
+    }
+
+    @UiThread
+    public void stop() {
+        OSUtils.checkMainLoop();
+        mImageCache.evictAll();
+    }
+
+    public void setGLRoot(GLRoot glRoot) {
+        mGLRoot = glRoot;
+    }
+
+    /**
+     * @return {@link #STATE_WAIT} for wait,
+     * {@link #STATE_ERROR} for error, {@link #getError()} to get error message,
+     * 0 for empty
+     */
+    public abstract int size();
+
+    public final void request(int index) {
+        ImageWrapper imageWrapper = mImageCache.get(index);
+        if (imageWrapper != null) {
+            notifyPageSucceed(index, imageWrapper);
+        } else {
+            onRequest(index);
+        }
+    }
+
+    public final void forceRequest(int index) {
+        onForceRequest(index);
+    }
+
+    public void removeCache(int index) {
+        mImageCache.remove(index);
+    }
+
+    protected abstract void onRequest(int index);
+
+    protected abstract void onForceRequest(int index);
+
+    public final void cancelRequest(int index) {
+        onCancelRequest(index);
+    }
+
+    protected abstract void onCancelRequest(int index);
+
+    public abstract String getError();
+
+    public void setListener(Listener listener) {
+        mListener = listener;
+    }
+
+    public void notifyDataChanged() {
+        notify(NotifyTask.TYPE_DATA_CHANGED, -1, 0.0f, null, null);
+    }
+
+    public void notifyDataChanged(int index) {
+        notify(NotifyTask.TYPE_DATA_CHANGED, index, 0.0f, null, null);
+    }
+
+    public void notifyPageWait(int index) {
+        notify(NotifyTask.TYPE_WAIT, index, 0.0f, null, null);
+    }
+
+    public void notifyPagePercent(int index, float percent) {
+        notify(NotifyTask.TYPE_PERCENT, index, percent, null, null);
+    }
+
+    public void notifyPageSucceed(int index, Image image) {
+        ImageWrapper imageWrapper = new ImageWrapper(image);
+        mImageCache.add(index, imageWrapper);
+        notifyPageSucceed(index, imageWrapper);
+    }
+
+    public void notifyPageSucceed(int index, ImageWrapper image) {
+        notify(NotifyTask.TYPE_SUCCEED, index, 0.0f, image, null);
+    }
+
+    public void notifyPageFailed(int index, String error) {
+        notify(NotifyTask.TYPE_FAILED, index, 0.0f, null, error);
+    }
+
+    private void notify(@NotifyTask.Type int type, int index, float percent, ImageWrapper image, String error) {
+        Listener listener = mListener;
+        if (listener == null) {
+            return;
+        }
+
+        GLRoot glRoot = mGLRoot;
+        if (glRoot == null) {
+            return;
+        }
+
+        NotifyTask task = mNotifyTaskPool.pop();
+        if (task == null) {
+            task = new NotifyTask(listener, mNotifyTaskPool);
+        }
+        task.setData(type, index, percent, image, error);
+        glRoot.addOnGLIdleListener(task);
+    }
+
+    public interface Listener {
+
+        void onDataChanged();
+
+        void onPageWait(int index);
+
+        void onPagePercent(int index, float percent);
+
+        void onPageSucceed(int index, ImageWrapper image);
+
+        void onPageFailed(int index, String error);
+
+        void onDataChanged(int index);
+    }
+
+    private static class NotifyTask implements GLRoot.OnGLIdleListener {
+
+        public static final int TYPE_DATA_CHANGED = 0;
+        public static final int TYPE_WAIT = 1;
+        public static final int TYPE_PERCENT = 2;
+        public static final int TYPE_SUCCEED = 3;
+        public static final int TYPE_FAILED = 4;
+        private final Listener mListener;
+        private final ConcurrentPool<NotifyTask> mPool;
+        @Type
+        private int mType;
+        private int mIndex;
+        private float mPercent;
+        private ImageWrapper mImage;
+        private String mError;
+
+        public NotifyTask(Listener listener, ConcurrentPool<NotifyTask> pool) {
+            mListener = listener;
+            mPool = pool;
+        }
+
+        public void setData(@Type int type, int index, float percent, ImageWrapper image, String error) {
+            mType = type;
+            mIndex = index;
+            mPercent = percent;
+            mImage = image;
+            mError = error;
+        }
+
+        @Override
+        public boolean onGLIdle(GLCanvas canvas, boolean renderRequested) {
+            switch (mType) {
+                case TYPE_DATA_CHANGED:
+                    if (mIndex < 0) {
+                        mListener.onDataChanged();
+                    } else {
+                        mListener.onDataChanged(mIndex);
+                    }
+                    break;
+                case TYPE_WAIT:
+                    mListener.onPageWait(mIndex);
+                    break;
+                case TYPE_PERCENT:
+                    mListener.onPagePercent(mIndex, mPercent);
+                    break;
+                case TYPE_SUCCEED:
+                    mListener.onPageSucceed(mIndex, mImage);
+                    break;
+                case TYPE_FAILED:
+                    mListener.onPageFailed(mIndex, mError);
+                    break;
+            }
+
+            // Clean data
+            mImage = null;
+            mError = null;
+            // Push back
+            mPool.push(this);
+
+            return false;
+        }
+
+        @IntDef({TYPE_DATA_CHANGED, NotifyTask.TYPE_WAIT, TYPE_PERCENT, TYPE_SUCCEED, TYPE_FAILED})
+        @Retention(RetentionPolicy.SOURCE)
+        public @interface Type {
+        }
+    }
+
+    private static class ImageCache extends LruCache<Integer, ImageWrapper> {
+
+        private static final long MAX_CACHE_SIZE = 128 * 1024 * 1024;
+        private static final long MIN_CACHE_SIZE = 32 * 1024 * 1024;
+
+        public ImageCache() {
+            super((int) MathUtils.clamp(OSUtils.getTotalMemory() / 16, MIN_CACHE_SIZE, MAX_CACHE_SIZE));
+        }
+
+        public void add(Integer key, ImageWrapper value) {
+            if (value.getFormat() != Image.FORMAT_GIF && value.obtain()) {
+                put(key, value);
+            }
+        }
+
+        @Override
+        protected int sizeOf(Integer key, ImageWrapper value) {
+            int size = value.getWidth() * value.getHeight() * 4;
+            if (value.getFormat() == Image.FORMAT_GIF) {
+                size *= 5;
+            }
+            return size;
+        }
+
+        @Override
+        protected void entryRemoved(boolean evicted, Integer key, ImageWrapper oldValue, ImageWrapper newValue) {
+            if (oldValue != null) {
+                oldValue.release();
+            }
+        }
+    }
+}
@@ -0,0 +1,186 @@
+/*
+ * 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.glgallery;
+
+import android.content.Context;
+import android.os.SystemClock;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+
+import androidx.core.view.GestureDetectorCompat;
+
+// This class aggregates three gesture detectors: GestureDetector,
+// ScaleGestureDetector, and DownUpDetector.
+class GestureRecognizer {
+    @SuppressWarnings("unused")
+    private static final String TAG = "GestureRecognizer";
+    private final GestureDetectorCompat mGestureDetector;
+    private final ScaleGestureDetector mScaleDetector;
+    private final DownUpDetector mDownUpDetector;
+    private final Listener mListener;
+
+    public GestureRecognizer(Context context, Listener listener) {
+        mListener = listener;
+        MyGestureListener gestureListener = new MyGestureListener();
+        mGestureDetector = new GestureDetectorCompat(context, gestureListener,
+                null /* ignoreMultitouch */);
+        mGestureDetector.setOnDoubleTapListener(gestureListener);
+        mScaleDetector = new ScaleGestureDetector(
+                context, new MyScaleListener());
+        mDownUpDetector = new DownUpDetector(new MyDownUpListener());
+    }
+
+    public void onTouchEvent(MotionEvent event) {
+        mScaleDetector.onTouchEvent(event);
+        mGestureDetector.onTouchEvent(event);
+        mDownUpDetector.onTouchEvent(event);
+    }
+
+    public boolean isDown() {
+        return mDownUpDetector.isDown();
+    }
+
+    public void cancelScale() {
+        long now = SystemClock.uptimeMillis();
+        MotionEvent cancelEvent = MotionEvent.obtain(
+                now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
+        mScaleDetector.onTouchEvent(cancelEvent);
+        cancelEvent.recycle();
+    }
+
+    public interface Listener {
+        boolean onSingleTapUp(float x, float y);
+
+        boolean onSingleTapConfirmed(float x, float y);
+
+        boolean onDoubleTap(float x, float y);
+
+        boolean onDoubleTapConfirmed(float x, float y);
+
+        void onLongPress(float x, float y);
+
+        boolean onScroll(float dx, float dy, float totalX, float totalY, float x, float y);
+
+        /**
+         * @param velocityX Finger from top to bottom is positive
+         * @param velocityY Finger from left to right is positive
+         */
+        boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY);
+
+        boolean onScaleBegin(float focusX, float focusY);
+
+        boolean onScale(float focusX, float focusY, float scale);
+
+        void onScaleEnd();
+
+        void onDown(float x, float y);
+
+        void onUp();
+
+        void onPointerDown(float x, float y);
+
+        void onPointerUp();
+    }
+
+    private class MyGestureListener
+            extends GestureDetector.SimpleOnGestureListener {
+        @Override
+        public boolean onSingleTapUp(MotionEvent e) {
+            return mListener.onSingleTapUp(e.getX(), e.getY());
+        }
+
+        @Override
+        public boolean onSingleTapConfirmed(MotionEvent e) {
+            return mListener.onSingleTapConfirmed(e.getX(), e.getY());
+        }
+
+        @Override
+        public boolean onDoubleTapEvent(MotionEvent e) {
+            if (e.getAction() == MotionEvent.ACTION_UP) {
+                return mListener.onDoubleTapConfirmed(e.getX(), e.getY());
+            } else {
+                return true;
+            }
+        }
+
+        @Override
+        public boolean onDoubleTap(MotionEvent e) {
+            return mListener.onDoubleTap(e.getX(), e.getY());
+        }
+
+        @Override
+        public void onLongPress(MotionEvent e) {
+            mListener.onLongPress(e.getX(), e.getY());
+        }
+
+        @Override
+        public boolean onScroll(
+                MotionEvent e1, MotionEvent e2, float dx, float dy) {
+            return mListener.onScroll(
+                    dx, dy, e2.getX() - e1.getX(), e2.getY() - e1.getY(), e2.getX(), e2.getY());
+        }
+
+        @Override
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
+                               float velocityY) {
+            return mListener.onFling(e1, e2, velocityX, velocityY);
+        }
+    }
+
+    private class MyScaleListener
+            extends ScaleGestureDetector.SimpleOnScaleGestureListener {
+        @Override
+        public boolean onScaleBegin(ScaleGestureDetector detector) {
+            return mListener.onScaleBegin(
+                    detector.getFocusX(), detector.getFocusY());
+        }
+
+        @Override
+        public boolean onScale(ScaleGestureDetector detector) {
+            return mListener.onScale(detector.getFocusX(),
+                    detector.getFocusY(), detector.getScaleFactor());
+        }
+
+        @Override
+        public void onScaleEnd(ScaleGestureDetector detector) {
+            mListener.onScaleEnd();
+        }
+    }
+
+    private class MyDownUpListener implements DownUpDetector.DownUpListener {
+        @Override
+        public void onDown(MotionEvent e) {
+            mListener.onDown(e.getX(), e.getY());
+        }
+
+        @Override
+        public void onUp(MotionEvent e) {
+            mListener.onUp();
+        }
+
+        @Override
+        public void onPointerDown(MotionEvent e) {
+            mListener.onPointerDown(e.getX(), e.getY());
+        }
+
+        @Override
+        public void onPointerUp(MotionEvent e) {
+            mListener.onPointerUp();
+        }
+    }
+}
@@ -0,0 +1,597 @@
+/*
+ * 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.glgallery;
+
+import android.graphics.Rect;
+import android.graphics.RectF;
+
+import com.hippo.glview.anim.AlphaAnimation;
+import com.hippo.glview.glrenderer.GLCanvas;
+import com.hippo.glview.glrenderer.Texture;
+import com.hippo.glview.image.ImageTexture;
+import com.hippo.glview.view.GLView;
+import com.hippo.yorozuya.AnimationUtils;
+import com.hippo.yorozuya.MathUtils;
+
+import java.util.Arrays;
+
+class ImageView extends GLView implements ImageTexture.Callback {
+
+    public static final int SCALE_ORIGIN = 0;
+    public static final int SCALE_FIT_WIDTH = 1;
+    public static final int SCALE_FIT_HEIGHT = 2;
+    public static final int SCALE_FIT = 3;
+    public static final int SCALE_FIXED = 4;
+    public static final int START_POSITION_TOP_LEFT = 0;
+    public static final int START_POSITION_TOP_RIGHT = 1;
+    public static final int START_POSITION_BOTTOM_LEFT = 2;
+    public static final int START_POSITION_BOTTOM_RIGHT = 3;
+    public static final int START_POSITION_CENTER = 4;
+    // TODO adjust scale max and min according to image size and screen size
+    private static final float SCALE_MIN = 1 / 10.0f;
+    private static final float SCALE_MAX = 10.0f;
+    private static final long ALPHA_ANIMATION_DURING = 300L;
+    private final RectF mDst = new RectF();
+    private final RectF mSrcActual = new RectF();
+    private final RectF mDstActual = new RectF();
+    private final Rect mValidRect = new Rect();
+    private final AlphaAnimation mAlphaAnimation;
+    private ImageTexture mImageTexture;
+    private int mTextureWidth;
+    private int mTextureHeight;
+    private int mScaleMode = SCALE_FIT;
+    private int mStartPosition = START_POSITION_TOP_RIGHT;
+    private float mScaleValue = 1.0f;
+    private float mScale = 1.0f;
+    private boolean mScaleOffsetDirty = true;
+    private boolean mPositionInRootDirty = true;
+
+    public ImageView() {
+        mAlphaAnimation = new AlphaAnimation(0.0f, 1.0f);
+        mAlphaAnimation.setDuration(ALPHA_ANIMATION_DURING);
+        mAlphaAnimation.setInterpolator(AnimationUtils.FAST_SLOW_INTERPOLATOR);
+    }
+
+    public static int sanitizeScaleMode(int scaleMode) {
+        if (scaleMode != SCALE_ORIGIN &&
+                scaleMode != SCALE_FIT_WIDTH &&
+                scaleMode != SCALE_FIT_HEIGHT &&
+                scaleMode != SCALE_FIT &&
+                scaleMode != SCALE_FIXED) {
+            return SCALE_FIT;
+        } else {
+            return scaleMode;
+        }
+    }
+
+    public static int sanitizeStartPosition(int startPosition) {
+        if (startPosition != START_POSITION_TOP_LEFT &&
+                startPosition != START_POSITION_TOP_RIGHT &&
+                startPosition != START_POSITION_BOTTOM_LEFT &&
+                startPosition != START_POSITION_BOTTOM_RIGHT &&
+                startPosition != START_POSITION_CENTER) {
+            return START_POSITION_TOP_RIGHT;
+        } else {
+            return startPosition;
+        }
+    }
+
+    @Override
+    protected int getSuggestedMinimumWidth() {
+        return Math.max(super.getSuggestedMinimumWidth(),
+                mImageTexture == null ? 0 : mTextureWidth);
+    }
+
+    @Override
+    protected int getSuggestedMinimumHeight() {
+        return Math.max(super.getSuggestedMinimumHeight(),
+                mImageTexture == null ? 0 : mTextureHeight);
+    }
+
+    @Override
+    protected void onMeasure(int widthSpec, int heightSpec) {
+        if (mImageTexture == null) {
+            super.onMeasure(widthSpec, heightSpec);
+        } else {
+            float ratio = (float) mTextureWidth / mTextureHeight;
+            int widthSize = MeasureSpec.getSize(widthSpec);
+            int heightSize = MeasureSpec.getSize(heightSpec);
+            int widthMode = MeasureSpec.getMode(widthSpec);
+            int heightMode = MeasureSpec.getMode(heightSpec);
+            int measureWidth = -1;
+            int measureHeight = -1;
+
+            if (widthMode == MeasureSpec.EXACTLY) {
+                measureWidth = widthSize;
+                if (heightMode == MeasureSpec.EXACTLY) {
+                    measureHeight = heightSize;
+                } else {
+                    measureHeight = (int) (widthSize / ratio);
+                    if (heightMode == MeasureSpec.AT_MOST) {
+                        measureHeight = Math.min(measureHeight, heightSize);
+                    }
+                }
+            } else if (heightMode == MeasureSpec.EXACTLY) {
+                measureHeight = heightSize;
+                measureWidth = (int) (heightSize * ratio);
+                if (widthMode == MeasureSpec.AT_MOST) {
+                    measureWidth = Math.min(measureWidth, widthSize);
+                }
+            }
+
+            if (measureWidth == -1 || measureHeight == -1) {
+                super.onMeasure(widthSpec, heightSpec);
+            } else {
+                setMeasuredSize(measureWidth, measureHeight);
+            }
+        }
+    }
+
+    @Override
+    protected void onSizeChanged(int newW, int newH, int oldW, int oldH) {
+        mScaleOffsetDirty = true;
+        mPositionInRootDirty = true;
+    }
+
+    @Override
+    protected void onPositionInRootChanged(int x, int y, int oldX, int oldY) {
+        mPositionInRootDirty = true;
+
+        if (mImageTexture != null) {
+            getValidRect(mValidRect);
+            if (!mValidRect.isEmpty()) {
+                mImageTexture.start();
+            } else {
+                mImageTexture.stop();
+            }
+        }
+    }
+
+    public void getScaleDefault(float[] scaleDefault) {
+        if (mImageTexture == null) {
+            return;
+        }
+
+        scaleDefault[0] = 1.0f;
+        scaleDefault[1] = (float) getWidth() / mTextureWidth;
+        scaleDefault[2] = (float) getHeight() / mTextureHeight;
+        scaleDefault[3] = Math.max(scaleDefault[1], scaleDefault[2]) * 2;
+
+        scaleDefault[0] = MathUtils.clamp(scaleDefault[0], SCALE_MIN, SCALE_MAX);
+        scaleDefault[1] = MathUtils.clamp(scaleDefault[1], SCALE_MIN, SCALE_MAX);
+        scaleDefault[2] = MathUtils.clamp(scaleDefault[2], SCALE_MIN, SCALE_MAX);
+        scaleDefault[3] = MathUtils.clamp(scaleDefault[3], SCALE_MIN, SCALE_MAX);
+
+        Arrays.sort(scaleDefault);
+    }
+
+    public ImageTexture getImageTexture() {
+        return mImageTexture;
+    }
+
+    public void setImageTexture(ImageTexture imageTexture) {
+        // Remove callback
+        if (mImageTexture != null) {
+            mImageTexture.setCallback(null);
+            mImageTexture.stop();
+        }
+
+        int oldTextureWidth = mTextureWidth;
+        int oldTextureHeight = mTextureHeight;
+
+        mImageTexture = imageTexture;
+
+        if (imageTexture != null) {
+            imageTexture.setCallback(this);
+            mTextureWidth = imageTexture.getWidth();
+            mTextureHeight = imageTexture.getHeight();
+            // Avoid zero and negative
+            if (mTextureWidth <= 0) {
+                mTextureWidth = 1;
+            }
+            if (mTextureHeight <= 0) {
+                mTextureHeight = 1;
+            }
+
+            // Start alpha animation, do not show animation for image has no valid rect
+            getValidRect(mValidRect);
+            if (!mValidRect.isEmpty()) {
+                startAnimation(mAlphaAnimation, true);
+                mImageTexture.start();
+            }
+        } else {
+            mTextureWidth = 1;
+            mTextureHeight = 1;
+        }
+
+        mScaleOffsetDirty = true;
+        mPositionInRootDirty = true;
+
+        if (oldTextureWidth != mTextureWidth || oldTextureHeight != mTextureHeight) {
+            requestLayout();
+        }
+    }
+
+    public boolean isLoaded() {
+        return mImageTexture != null;
+    }
+
+    public boolean canFlingVertically() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return false;
+            }
+        }
+
+        return mDst.top < 0.0f || mDst.bottom > getHeight();
+    }
+
+    public boolean canFlingHorizontally() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return false;
+            }
+        }
+
+        return mDst.left < 0.0f || mDst.right > getWidth();
+    }
+
+    public boolean canFling() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return false;
+            }
+        }
+
+        return mDst.left < 0.0f || mDst.top < 0.0f || mDst.right > getWidth() || mDst.bottom > getHeight();
+    }
+
+    public int getMaxDx() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return 0;
+            }
+        }
+        return Math.max(0, -(int) mDst.left);
+    }
+
+    public int getMinDx() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return 0;
+            }
+        }
+        return Math.min(0, getWidth() - (int) mDst.right);
+    }
+
+    public int getMaxDy() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return 0;
+            }
+        }
+        return Math.max(0, -(int) mDst.top);
+    }
+
+    public int getMinDy() {
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+            if (mScaleOffsetDirty) {
+                return 0;
+            }
+        }
+        return Math.min(0, getHeight() - (int) mDst.bottom);
+    }
+
+    public float getScale() {
+        return mScale;
+    }
+
+    /**
+     * If target is shorter then screen, make it in screen center. If target is
+     * longer then parent, make sure target fill parent over
+     */
+    private void adjustPosition() {
+        RectF dst = mDst;
+        int screenWidth = getWidth();
+        int screenHeight = getHeight();
+        float targetWidth = dst.width();
+        float targetHeight = dst.height();
+
+        if (targetWidth > screenWidth) {
+            float fixXOffset = dst.left;
+            if (fixXOffset > 0) {
+                dst.left -= fixXOffset;
+                dst.right -= fixXOffset;
+            } else if ((fixXOffset = screenWidth - dst.right) > 0) {
+                dst.left += fixXOffset;
+                dst.right += fixXOffset;
+            }
+        } else {
+            float left = (screenWidth - targetWidth) / 2;
+            dst.offsetTo(left, dst.top);
+        }
+        if (targetHeight > screenHeight) {
+            float fixYOffset = dst.top;
+            if (fixYOffset > 0) {
+                dst.top -= fixYOffset;
+                dst.bottom -= fixYOffset;
+            } else if ((fixYOffset = screenHeight - dst.bottom) > 0) {
+                dst.top += fixYOffset;
+                dst.bottom += fixYOffset;
+            }
+        } else {
+            float top = (screenHeight - targetHeight) / 2;
+            dst.offsetTo(dst.left, top);
+        }
+    }
+
+    public void setScaleOffset(int scaleMode, int startPosition, float scaleValue) {
+        mScaleMode = scaleMode;
+        mStartPosition = startPosition;
+        mScaleValue = scaleValue;
+
+        int screenWidth = getWidth();
+        int screenHeight = getHeight();
+
+        if (mImageTexture == null || screenWidth == 0 || screenHeight == 0) {
+            mScaleOffsetDirty = true;
+            return;
+        }
+
+        int textureWidth = mTextureWidth;
+        int textureHeight = mTextureHeight;
+
+        // Set scale
+        float targetWidth;
+        float targetHeight;
+        switch (scaleMode) {
+            case SCALE_ORIGIN:
+                mScale = 1.0f;
+                targetWidth = textureWidth;
+                targetHeight = textureHeight;
+                break;
+            case SCALE_FIT_WIDTH:
+                mScale = (float) screenWidth / textureWidth;
+                targetWidth = screenWidth;
+                targetHeight = textureHeight * mScale;
+                break;
+            case SCALE_FIT_HEIGHT:
+                mScale = (float) screenHeight / textureHeight;
+                targetWidth = textureWidth * mScale;
+                targetHeight = screenHeight;
+                break;
+            case SCALE_FIT:
+                float scaleX = (float) screenWidth / textureWidth;
+                float scaleY = (float) screenHeight / textureHeight;
+                if (scaleX < scaleY) {
+                    mScale = scaleX;
+                    targetWidth = screenWidth;
+                    targetHeight = textureHeight * scaleX;
+                } else {
+                    mScale = scaleY;
+                    targetWidth = textureWidth * scaleY;
+                    targetHeight = screenHeight;
+                    break;
+                }
+                break;
+            case SCALE_FIXED:
+            default:
+                mScale = scaleValue;
+                targetWidth = textureWidth * scaleValue;
+                targetHeight = textureHeight * scaleValue;
+                break;
+        }
+
+        // adjust scale, not too big, not too small
+        if (mScale < SCALE_MIN) {
+            mScale = SCALE_MIN;
+            targetWidth = textureWidth * SCALE_MIN;
+            targetHeight = textureHeight * SCALE_MIN;
+        } else if (mScale > SCALE_MAX) {
+            mScale = SCALE_MAX;
+            targetWidth = textureWidth * SCALE_MAX;
+            targetHeight = textureHeight * SCALE_MAX;
+        }
+
+        // Set mDst.left and mDst.right
+        RectF dst = mDst;
+        switch (startPosition) {
+            case START_POSITION_TOP_LEFT:
+                dst.left = 0;
+                dst.top = 0;
+                break;
+            case START_POSITION_TOP_RIGHT:
+                dst.left = screenWidth - targetWidth;
+                dst.top = 0;
+                break;
+            case START_POSITION_BOTTOM_LEFT:
+                dst.left = 0;
+                dst.top = screenHeight - targetHeight;
+                break;
+            case START_POSITION_BOTTOM_RIGHT:
+                dst.left = screenWidth - targetWidth;
+                dst.top = screenHeight - targetHeight;
+                break;
+            case START_POSITION_CENTER:
+            default:
+                dst.left = (screenWidth - targetWidth) / 2;
+                dst.top = (screenHeight - targetHeight) / 2;
+                break;
+        }
+
+        // Set mDst.right and mDst.bottom
+        dst.right = dst.left + targetWidth;
+        dst.bottom = dst.top + targetHeight;
+
+        // adjust position
+        adjustPosition();
+
+        mScaleOffsetDirty = false;
+        mPositionInRootDirty = true;
+    }
+
+    public void scroll(int dx, int dy, int[] remain) {
+        // Only work after layout
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mScaleOffsetDirty) {
+            remain[0] = dx;
+            remain[1] = dy;
+            return;
+        }
+
+        RectF dst = mDst;
+        int screenWidth = getWidth();
+        int screenHeight = getHeight();
+        float targetWidth = dst.width();
+        float targetHeight = dst.height();
+
+        if (targetWidth > screenWidth) {
+            dst.left -= dx;
+            dst.right -= dx;
+
+            float fixXOffset = dst.left;
+            if (fixXOffset > 0) {
+                dst.left -= fixXOffset;
+                dst.right -= fixXOffset;
+                remain[0] = -(int) fixXOffset;
+            } else if ((fixXOffset = screenWidth - dst.right) > 0) {
+                dst.left += fixXOffset;
+                dst.right += fixXOffset;
+                remain[0] = (int) fixXOffset;
+            } else {
+                remain[0] = 0;
+            }
+        } else {
+            remain[0] = dx;
+        }
+        if (targetHeight > screenHeight) {
+            dst.top -= dy;
+            dst.bottom -= dy;
+
+            float fixYOffset = dst.top;
+            if (fixYOffset > 0) {
+                dst.top -= fixYOffset;
+                dst.bottom -= fixYOffset;
+                remain[1] = -(int) fixYOffset;
+            } else if ((fixYOffset = screenHeight - dst.bottom) > 0) {
+                dst.top += fixYOffset;
+                dst.bottom += fixYOffset;
+                remain[1] = (int) fixYOffset;
+            } else {
+                remain[1] = 0;
+            }
+        } else {
+            remain[1] = dy;
+        }
+
+        if (dx != remain[0] || dy != remain[1]) {
+            mPositionInRootDirty = true;
+            invalidate();
+        }
+    }
+
+    public void scale(float focusX, float focusY, float scale) {
+        // Only work after layout
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mScaleOffsetDirty) {
+            return;
+        }
+
+        if ((mScale == SCALE_MAX && scale >= 1.0f) || (mScale == SCALE_MIN && scale < 1.0f)) {
+            return;
+        }
+
+        float newScale = mScale * scale;
+        newScale = MathUtils.clamp(newScale, SCALE_MIN, SCALE_MAX);
+        mScale = newScale;
+        RectF dst = mDst;
+        float left = (focusX - ((focusX - dst.left) * scale));
+        float top = (focusY - ((focusY - dst.top) * scale));
+        dst.set(left, top,
+                (left + (mImageTexture.getWidth() * newScale)),
+                (top + (mImageTexture.getHeight() * newScale)));
+
+        // adjust position
+        adjustPosition();
+
+        mPositionInRootDirty = true;
+        invalidate();
+    }
+
+    private void applyPositionInRoot() {
+        int width = mImageTexture.getWidth();
+        int height = mImageTexture.getHeight();
+        RectF dst = mDst;
+        RectF dstActual = mDstActual;
+        RectF srcActual = mSrcActual;
+
+        dstActual.set(dst);
+        getValidRect(mValidRect);
+        if (dstActual.intersect(mValidRect.left, mValidRect.top, mValidRect.right, mValidRect.bottom)) {
+            srcActual.left = MathUtils.lerp(0, width,
+                    MathUtils.delerp(dst.left, dst.right, dstActual.left));
+            srcActual.right = MathUtils.lerp(0, width,
+                    MathUtils.delerp(dst.left, dst.right, dstActual.right));
+            srcActual.top = MathUtils.lerp(0, height,
+                    MathUtils.delerp(dst.top, dst.bottom, dstActual.top));
+            srcActual.bottom = MathUtils.lerp(0, height,
+                    MathUtils.delerp(dst.top, dst.bottom, dstActual.bottom));
+        } else {
+            // Can't be seen, set src and dst empty
+            srcActual.setEmpty();
+            dstActual.setEmpty();
+        }
+
+        mPositionInRootDirty = false;
+    }
+
+    @Override
+    public void onRender(GLCanvas canvas) {
+        Texture texture = mImageTexture;
+        if (texture == null) {
+            return;
+        }
+
+        if (mScaleOffsetDirty) {
+            setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+
+        if (mPositionInRootDirty) {
+            applyPositionInRoot();
+        }
+
+        if (!mSrcActual.isEmpty()) {
+            texture.draw(canvas, mSrcActual, mDstActual);
+        }
+    }
+
+    @Override
+    public void invalidateImageTexture(ImageTexture who) {
+        invalidate();
+    }
+}
@@ -0,0 +1,963 @@
+/*
+ * 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.glgallery;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.Log;
+import android.view.animation.Interpolator;
+
+import androidx.annotation.IntDef;
+import androidx.annotation.NonNull;
+
+import com.hippo.glview.anim.Animation;
+import com.hippo.glview.view.GLView;
+import com.hippo.glview.widget.GLProgressView;
+import com.hippo.glview.widget.GLTextureView;
+import com.hippo.yorozuya.AnimationUtils;
+import com.hippo.yorozuya.AssertUtils;
+import com.hippo.yorozuya.MathUtils;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+class PagerLayoutManager extends GalleryView.LayoutManager {
+
+    public static final int MODE_LEFT_TO_RIGHT = 0;
+    public static final int MODE_RIGHT_TO_LEFT = 1;
+    private static final String TAG = PagerLayoutManager.class.getSimpleName();
+    private static final Interpolator SMOOTH_SCROLLER_INTERPOLATOR = new Interpolator() {
+        @Override
+        public float getInterpolation(float t) {
+            t -= 1.0f;
+            return t * t * t * t * t + 1.0f;
+        }
+    };
+    private final int[] mScrollRemain = new int[2];
+    private final float[] mScaleDefault = new float[4];
+    private final SmoothScroller mSmoothScroller;
+    private final PageFling mPageFling;
+    private final SmoothScaler mSmoothScaler;
+    private final Rect mTempRect = new Rect();
+    private GalleryView.Adapter mAdapter;
+    private GLProgressView mProgress;
+    private String mErrorStr;
+    private GLTextureView mErrorView;
+    private GalleryPageView mPrevious;
+    private GalleryPageView mCurrent;
+    private GalleryPageView mNext;
+    @Mode
+    private int mMode = MODE_RIGHT_TO_LEFT;
+    private int mScaleMode;
+    private int mStartPosition;
+    private float mScaleValue;
+    private int mOffset;
+    private int mDeltaX;
+    private int mDeltaY;
+    private boolean mCanScrollBetweenPages = false;
+    private boolean mStopAnimationFinger;
+    private int mInterval;
+    // Current index
+    private int mIndex;
+
+    public PagerLayoutManager(Context context, @NonNull GalleryView galleryView,
+                              int scaleMode, int startPoint, float scaleValue, int interval) {
+        super(galleryView);
+
+        mScaleMode = scaleMode;
+        mStartPosition = startPoint;
+        mScaleValue = scaleValue;
+
+        mInterval = interval;
+        mSmoothScroller = new SmoothScroller();
+        mPageFling = new PageFling(context);
+        mSmoothScaler = new SmoothScaler();
+    }
+
+    public void setInterval(int interval) {
+        if (mInterval == interval) {
+            return;
+        }
+
+        if (mAdapter != null) {
+            int index = getInternalCurrentIndex();
+            GalleryView.Adapter adapter = onDetach();
+            mInterval = interval;
+            onAttach(adapter);
+            setCurrentIndex(index);
+            mGalleryView.requestFill();
+        } else {
+            mInterval = interval;
+        }
+    }
+
+    private void resetParameters() {
+        mOffset = 0;
+        mDeltaX = 0;
+        mDeltaY = 0;
+        mCanScrollBetweenPages = false;
+        mStopAnimationFinger = false;
+    }
+
+    private boolean cancelAllAnimations() {
+        boolean running = mSmoothScroller.isRunning() ||
+                mPageFling.isRunning() ||
+                mSmoothScaler.isRunning();
+        mSmoothScroller.cancel();
+        mPageFling.cancel();
+        mSmoothScaler.cancel();
+        return running;
+    }
+
+    public void setMode(@Mode int mode) {
+        if (mMode == mode) {
+            return;
+        }
+
+        mMode = mode;
+        if (mAdapter != null) {
+            // It is attached, refill
+            // Cancel all animations
+            cancelAllAnimations();
+            // Remove all view
+            removeProgress();
+            removeErrorView();
+            removeAllPages();
+            // Reset parameters
+            resetParameters();
+            // Request fill
+            mGalleryView.requestFill();
+        }
+    }
+
+    public void setScaleMode(int scaleMode) {
+        if (mScaleMode == scaleMode) {
+            return;
+        }
+        mScaleMode = scaleMode;
+
+        if (mCurrent != null) {
+            mCurrent.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mPrevious != null) {
+            mPrevious.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mNext != null) {
+            mNext.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+    }
+
+    public void setStartPosition(int startPosition) {
+        if (mStartPosition == startPosition) {
+            return;
+        }
+        mStartPosition = startPosition;
+
+        if (mCurrent != null) {
+            mCurrent.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mPrevious != null) {
+            mPrevious.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+        if (mNext != null) {
+            mNext.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+    }
+
+    @Override
+    public void onAttach(GalleryView.Adapter adapter) {
+        AssertUtils.assertNull("The PagerLayoutManager is attached", mAdapter);
+        AssertUtils.assertNotNull("The adapter is null", adapter);
+        mAdapter = adapter;
+        // Reset parameters
+        resetParameters();
+    }
+
+    private void removeProgress() {
+        if (mProgress != null) {
+            mGalleryView.removeComponent(mProgress);
+            mGalleryView.releaseProgress(mProgress);
+            mProgress = null;
+        }
+    }
+
+    private void removeErrorView() {
+        if (mErrorView != null) {
+            mGalleryView.removeComponent(mErrorView);
+            mGalleryView.releaseErrorView(mErrorView);
+            mErrorView = null;
+            mErrorStr = null;
+        }
+    }
+
+    private void removePage(@NonNull GalleryPageView page) {
+        mGalleryView.removeComponent(page);
+        mAdapter.unbind(page);
+        mGalleryView.releasePage(page);
+    }
+
+    private void removeAllPages() {
+        // Remove gallery view
+        if (mPrevious != null) {
+            removePage(mPrevious);
+            mPrevious = null;
+        }
+        if (mCurrent != null) {
+            removePage(mCurrent);
+            mCurrent = null;
+        }
+        if (mNext != null) {
+            removePage(mNext);
+            mNext = null;
+        }
+    }
+
+    @Override
+    public GalleryView.Adapter onDetach() {
+        AssertUtils.assertNotNull("The PagerLayoutManager is not attached", mAdapter);
+
+        // Cancel all animations
+        cancelAllAnimations();
+
+        // Remove all view
+        removeProgress();
+        removeErrorView();
+        removeAllPages();
+
+        // Clear iterator
+        GalleryView.Adapter adapter = mAdapter;
+        mAdapter = null;
+
+        return adapter;
+    }
+
+    private GalleryPageView getLeftPage() {
+        switch (mMode) {
+            case MODE_LEFT_TO_RIGHT:
+                return mPrevious;
+            default:
+            case MODE_RIGHT_TO_LEFT:
+                return mNext;
+        }
+    }
+
+    private GalleryPageView getRightPage() {
+        switch (mMode) {
+            case MODE_LEFT_TO_RIGHT:
+                return mNext;
+            default:
+            case MODE_RIGHT_TO_LEFT:
+                return mPrevious;
+        }
+    }
+
+    private GalleryPageView obtainPage() {
+        GalleryPageView page = mGalleryView.obtainPage();
+        page.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        return page;
+    }
+
+    private void layoutPage(GalleryPageView page, int widthSpec, int heightSpec,
+                            int left, int top, int right, int bottom) {
+        Rect rect = mTempRect;
+        page.getValidRect(rect);
+        boolean oldValid = !rect.isEmpty();
+        page.measure(widthSpec, heightSpec);
+        page.layout(left, top, right, bottom);
+        page.getValidRect(rect);
+        boolean newValid = !rect.isEmpty();
+        if (!oldValid && newValid) {
+            page.getImageView().setScaleOffset(mScaleMode, mStartPosition, mScaleValue);
+        }
+    }
+
+    @Override
+    public void onFill() {
+        GalleryView.Adapter adapter = mAdapter;
+        GalleryView galleryView = mGalleryView;
+        AssertUtils.assertNotNull("The PagerLayoutManager is not attached", adapter);
+
+        int width = galleryView.getWidth();
+        int height = galleryView.getHeight();
+        int size = adapter.size();
+        String errorStr = adapter.getError();
+
+        if (size == GalleryProvider.STATE_WAIT) { // Wait here, show progress bar
+            // Remove error view and all pages
+            removeErrorView();
+            removeAllPages();
+
+            // Ensure progress
+            if (mProgress == null) {
+                mProgress = galleryView.obtainProgress();
+                galleryView.addComponent(mProgress);
+            }
+
+            // Place progress center
+            placeCenter(mProgress);
+        } else if (size <= GalleryProvider.STATE_ERROR || size == 0) { // Get error or empty, show error text
+            // Ensure error is not null
+            if (0 == size) {
+                errorStr = galleryView.getEmptyStr();
+            } else if (null == errorStr) {
+                errorStr = galleryView.getDefaultErrorStr();
+            }
+
+            // Remove progress and all pages
+            removeProgress();
+            removeAllPages();
+
+            // Ensure error view
+            if (mErrorView == null) {
+                mErrorView = galleryView.obtainErrorView();
+                galleryView.addComponent(mErrorView);
+            }
+
+            // Update error string
+            if (!errorStr.equals(mErrorStr)) {
+                mErrorStr = errorStr;
+                galleryView.bindErrorView(mErrorView, errorStr);
+            }
+
+            // Place error view center
+            placeCenter(mErrorView);
+        } else {
+            // Remove progress and error view
+            removeProgress();
+            removeErrorView();
+
+            // Ensure index in range
+            int index = mIndex;
+            if (index < 0) {
+                index = 0;
+                mIndex = index;
+                removeAllPages();
+                Log.e(TAG, "index < 0, index = " + index);
+            } else if (index >= size) {
+                index = size - 1;
+                mIndex = index;
+                removeAllPages();
+                Log.e(TAG, "index >= size, index = " + index + ", size = " + size);
+            }
+
+            // Ensure pages
+            if (mCurrent == null) {
+                mCurrent = obtainPage();
+                galleryView.addComponent(mCurrent);
+                adapter.bind(mCurrent, index);
+            }
+            if (mPrevious == null && index > 0) {
+                mPrevious = obtainPage();
+                galleryView.addComponent(mPrevious);
+                adapter.bind(mPrevious, index - 1);
+            } else if (mPrevious != null && index == 0) {
+                removePage(mPrevious);
+            }
+            if (mNext == null && index < size - 1) {
+                mNext = obtainPage();
+                galleryView.addComponent(mNext);
+                adapter.bind(mNext, index + 1);
+            } else if (mNext != null && index == size - 1) {
+                removePage(mNext);
+            }
+
+            GalleryPageView leftPage = getLeftPage();
+            GalleryPageView rightPage = getRightPage();
+
+            // Fix offset
+            final int min = rightPage == null ? 0 : -width - mInterval + 1;
+            final int max = leftPage == null ? 0 : width + mInterval - 1;
+            mOffset = MathUtils.clamp(mOffset, min, max);
+
+            // Measure and layout pages
+            final int offset = mOffset;
+            final int widthSpec = GLView.MeasureSpec.makeMeasureSpec(width, GLView.MeasureSpec.EXACTLY);
+            final int heightSpec = GLView.MeasureSpec.makeMeasureSpec(height, GLView.MeasureSpec.EXACTLY);
+            if (mCurrent != null) {
+                layoutPage(mCurrent, widthSpec, heightSpec,
+                        offset, 0, width + offset, height);
+            }
+            if (leftPage != null) {
+                layoutPage(leftPage, widthSpec, heightSpec,
+                        -mInterval - width + offset, 0, -mInterval + offset, height);
+            }
+            if (rightPage != null) {
+                layoutPage(rightPage, widthSpec, heightSpec,
+                        width + mInterval + offset, 0, width + mInterval + width + offset, height);
+            }
+        }
+    }
+
+    @Override
+    public void onDown() {
+        mDeltaX = 0;
+        mDeltaY = 0;
+        mStopAnimationFinger = cancelAllAnimations();
+    }
+
+    @Override
+    public void onUp() {
+        if (mCurrent == null) {
+            return;
+        }
+
+        // Scroll
+        if (mOffset != 0) {
+            int width = mGalleryView.getWidth();
+            int dx;
+            if (mOffset >= mInterval && getLeftPage() != null) {
+                dx = mOffset - width - mInterval;
+            } else if (mOffset <= -mInterval && getRightPage() != null) {
+                dx = mOffset + width + mInterval;
+            } else {
+                dx = mOffset;
+            }
+            final float pageDelta = 7 * (float) Math.abs(mOffset) / (width + mInterval);
+            int duration = (int) ((pageDelta + 1) * 100);
+            mSmoothScroller.startSmoothScroll(dx, 0, duration);
+        }
+    }
+
+    @Override
+    public void onDoubleTapConfirmed(float x, float y) {
+        if (mCurrent == null || !mCurrent.getImageView().isLoaded()) {
+            return;
+        }
+
+        float[] scales = mScaleDefault;
+        ImageView image = mCurrent.getImageView();
+        image.getScaleDefault(scales);
+        float scale = image.getScale();
+        float endScale = scales[0];
+        for (float value : scales) {
+            if (scale < value - 0.01f) {
+                endScale = value;
+                break;
+            }
+        }
+
+        mSmoothScaler.startSmoothScaler(x, y, scale, endScale, 300);
+    }
+
+    @Override
+    public void onLongPress(float x, float y) {
+    }
+
+    private void pagePrevious() {
+        if (mIndex <= 0) {
+            return;
+        }
+        mIndex--;
+
+        if (mNext != null) {
+            removePage(mNext);
+        }
+        mNext = mCurrent;
+        mCurrent = mPrevious;
+        mPrevious = null;
+
+        if (mIndex > 0) {
+            mPrevious = obtainPage();
+            mGalleryView.addComponent(mPrevious);
+            mAdapter.bind(mPrevious, mIndex - 1);
+        }
+    }
+
+    private void pageNext() {
+        GalleryView.Adapter adapter = mAdapter;
+        int size = adapter.size();
+        if (mIndex >= size - 1) {
+            return;
+        }
+        mIndex++;
+
+        if (mPrevious != null) {
+            removePage(mPrevious);
+        }
+        mPrevious = mCurrent;
+        mCurrent = mNext;
+        mNext = null;
+
+        if (mIndex < size - 1) {
+            mNext = obtainPage();
+            mGalleryView.addComponent(mNext);
+            adapter.bind(mNext, mIndex + 1);
+        }
+    }
+
+    private void pageLeft() {
+        switch (mMode) {
+            case MODE_LEFT_TO_RIGHT:
+                pagePrevious();
+                break;
+            default:
+            case MODE_RIGHT_TO_LEFT:
+                pageNext();
+                break;
+        }
+    }
+
+    private void pageRight() {
+        switch (mMode) {
+            case MODE_LEFT_TO_RIGHT:
+                pageNext();
+                break;
+            default:
+            case MODE_RIGHT_TO_LEFT:
+                pagePrevious();
+                break;
+        }
+    }
+
+    private int scrollBetweenPages(int dx) {
+        GalleryPageView leftPage = getLeftPage();
+        GalleryPageView rightPage = getRightPage();
+        int width = mGalleryView.getWidth();
+
+        int remain;
+        if (dx < 0) { // Try to show left
+            int limit;
+            if (leftPage == null) {
+                limit = 0;
+            } else {
+                limit = width + mInterval;
+            }
+
+            if (dx > mOffset - limit) {
+                remain = 0;
+                mOffset -= dx;
+            } else {
+                // Go to left page if left page not null
+                if (leftPage != null) {
+                    pageLeft();
+                }
+                remain = dx + limit - mOffset;
+                mOffset = 0;
+            }
+        } else { // Try to show right
+            int limit;
+            if (rightPage == null) {
+                limit = 0;
+            } else {
+                limit = -width - mInterval;
+            }
+
+            if (dx < mOffset - limit) {
+                remain = 0;
+                mOffset -= dx;
+            } else {
+                // Go to right page if right page not null
+                if (rightPage != null) {
+                    pageRight();
+                }
+                remain = dx + limit - mOffset;
+                mOffset = 0;
+            }
+        }
+
+        return remain;
+    }
+
+    public void scrollInternal(float dx, float dy, float x, float y) {
+        if (mCurrent == null) {
+            return;
+        }
+
+        boolean needFill = false;
+        boolean canImageScroll = true;
+        int remainX = (int) dx;
+        int remainY = (int) dy;
+
+        if (mGalleryView.isFirstScroll()) {
+            mCanScrollBetweenPages = Math.abs(dx) > Math.abs(dy) * 1.5;
+        }
+
+        while (remainX != 0 || remainY != 0) {
+            if (mOffset == 0 && canImageScroll) {
+                ImageView image = mCurrent.getImageView();
+                image.scroll(remainX, remainY, mScrollRemain);
+                remainX = mScrollRemain[0];
+                remainY = mScrollRemain[1];
+                canImageScroll = false;
+                mDeltaX = 0;
+                mDeltaY = 0;
+            } else if (remainX == 0 ||
+                    (getLeftPage() == null && mOffset == 0 && remainX < 0) ||
+                    (getRightPage() == null && mOffset == 0 && remainX > 0)) {
+                // On edge
+                remainX = 0;
+                remainY = 0;
+            } else if (mCanScrollBetweenPages) {
+                remainX = scrollBetweenPages(remainX);
+                canImageScroll = true;
+                needFill = true;
+                mDeltaX = 0;
+                mDeltaY = 0;
+            } else {
+                remainX = 0;
+                remainY = 0;
+                mDeltaX = 0;
+                mDeltaY = 0;
+            }
+        }
+
+        if (needFill) {
+            mGalleryView.requestFill();
+        }
+    }
+
+    @Override
+    public void onScroll(float dx, float dy, float totalX, float totalY, float x, float y) {
+        scrollInternal(dx, dy, x, y);
+    }
+
+    @Override
+    public void onFling(float velocityX, float velocityY) {
+        if (mCurrent == null || mOffset != 0 || !mCurrent.getImageView().isLoaded() ||
+                !mCurrent.getImageView().canFling()) {
+            return;
+        }
+
+        ImageView image = mCurrent.getImageView();
+        mPageFling.startFling((int) velocityX, image.getMinDx(), image.getMaxDx(),
+                (int) velocityY, image.getMinDy(), image.getMaxDy());
+    }
+
+    @Override
+    public boolean canScale() {
+        return mCurrent != null && mOffset == 0 && mCurrent.getImageView().isLoaded();
+    }
+
+    @Override
+    public void onScale(float focusX, float focusY, float scale) {
+        if (mCurrent == null || !mCurrent.getImageView().isLoaded()) {
+            return;
+        }
+
+        mCurrent.getImageView().scale(focusX, focusY, scale);
+        mScaleValue = mCurrent.getImageView().getScale();
+    }
+
+    @Override
+    public boolean onUpdateAnimation(long time) {
+        boolean invalidate = mSmoothScroller.calculate(time);
+        invalidate |= mPageFling.calculate(time);
+        invalidate |= mSmoothScaler.calculate(time);
+        return invalidate;
+    }
+
+    @Override
+    public void onDataChanged() {
+        AssertUtils.assertNotNull("The PagerLayoutManager is not attached", mAdapter);
+
+        // Cancel all animations
+        cancelAllAnimations();
+        // Remove all views
+        removeProgress();
+        removeErrorView();
+        removeAllPages();
+        // Reset parameters
+        resetParameters();
+        mGalleryView.requestFill();
+    }
+
+    @Override
+    public void onPageLeft() {
+        int size = mAdapter.size();
+        if (size <= 0 || mCurrent == null) {
+            return;
+        }
+
+        if (mMode == MODE_LEFT_TO_RIGHT) {
+            if (mIndex != 0) {
+                setCurrentIndex(mIndex - 1);
+            }
+        } else {
+            if (mIndex < size - 1) {
+                setCurrentIndex(mIndex + 1);
+            }
+        }
+    }
+
+    @Override
+    public void onPageRight() {
+        int size = mAdapter.size();
+        if (size <= 0 || mCurrent == null) {
+            return;
+        }
+
+        if (mMode == MODE_LEFT_TO_RIGHT) {
+            if (mIndex < size - 1) {
+                setCurrentIndex(mIndex + 1);
+            }
+        } else {
+            if (mIndex != 0) {
+                setCurrentIndex(mIndex - 1);
+            }
+        }
+    }
+
+    @Override
+    public boolean isTapOrPressEnable() {
+        return !mStopAnimationFinger;
+    }
+
+    @Override
+    public GalleryPageView findPageByIndex(int index) {
+        if (mCurrent != null && mCurrent.getIndex() == index) {
+            return mCurrent;
+        }
+        if (mPrevious != null && mPrevious.getIndex() == index) {
+            return mPrevious;
+        }
+        if (mNext != null && mNext.getIndex() == index) {
+            return mNext;
+        }
+        return null;
+    }
+
+    @Override
+    public int getCurrentIndex() {
+        if (mCurrent != null) {
+            return mCurrent.getIndex();
+        } else {
+            return GalleryPageView.INVALID_INDEX;
+        }
+    }
+
+    @Override
+    public void setCurrentIndex(int index) {
+        int size = mAdapter.size();
+        if (size <= 0) {
+            // Can't get size now, assume size is MAX
+            size = Integer.MAX_VALUE;
+        }
+        if (index == mIndex || index < 0 || index >= size) {
+            return;
+        }
+        if (mCurrent == null) {
+            mIndex = index;
+        } else if (index == mIndex - 1) {
+            // Cancel all animations
+            cancelAllAnimations();
+            // Reset parameters
+            resetParameters();
+            // Go to previous
+            pagePrevious();
+            // Request fill
+            mGalleryView.requestFill();
+        } else if (index == mIndex + 1) {
+            // Cancel all animations
+            cancelAllAnimations();
+            // Reset parameters
+            resetParameters();
+            // Go to next
+            pageNext();
+            // Request fill
+            mGalleryView.requestFill();
+        } else {
+            mIndex = index;
+            // It is attached, refill
+            // Cancel all animations
+            cancelAllAnimations();
+            // Remove all view
+            removeProgress();
+            removeErrorView();
+            removeAllPages();
+            // Reset parameters
+            resetParameters();
+            // Request fill
+            mGalleryView.requestFill();
+        }
+    }
+
+    @Override
+    public int getIndexUnder(float x, float y) {
+        if (mCurrent == null) {
+            return GalleryPageView.INVALID_INDEX;
+        } else {
+            int intX = (int) x;
+            int intY = (int) y;
+            if (mCurrent.bounds().contains(intX, intY)) {
+                return mCurrent.getIndex();
+            } else if (mPrevious != null && mPrevious.bounds().contains(intX, intY)) {
+                return mPrevious.getIndex();
+            } else if (mNext != null && mNext.bounds().contains(intX, intY)) {
+                return mNext.getIndex();
+            } else {
+                return GalleryPageView.INVALID_INDEX;
+            }
+        }
+    }
+
+    @Override
+    int getInternalCurrentIndex() {
+        int currentIndex = getCurrentIndex();
+        if (currentIndex == GalleryPageView.INVALID_INDEX) {
+            currentIndex = mIndex;
+        }
+        return currentIndex;
+    }
+
+    @IntDef({MODE_LEFT_TO_RIGHT, MODE_RIGHT_TO_LEFT})
+    @Retention(RetentionPolicy.SOURCE)
+    private @interface Mode {
+    }
+
+    private class SmoothScroller extends Animation {
+
+        private int mDx;
+        private int mDy;
+        private int mLastX;
+        private int mLastY;
+
+        public SmoothScroller() {
+            setInterpolator(SMOOTH_SCROLLER_INTERPOLATOR);
+        }
+
+        public void startSmoothScroll(int dx, int dy, int duration) {
+            mDx = dx;
+            mDy = dy;
+            mLastX = 0;
+            mLastY = 0;
+            setDuration(duration);
+            start();
+            mGalleryView.invalidate();
+        }
+
+        @Override
+        protected void onCalculate(float progress) {
+            int x = (int) (mDx * progress);
+            int y = (int) (mDy * progress);
+            int offsetX = x - mLastX;
+            while (offsetX != 0) {
+                int oldOffsetX = offsetX;
+                offsetX = scrollBetweenPages(offsetX);
+                // Avoid loop infinitely
+                if (offsetX == oldOffsetX) {
+                    break;
+                } else {
+                    mGalleryView.requestFill();
+                }
+            }
+            mLastX = x;
+            mLastY = y;
+        }
+    }
+
+    private class PageFling extends Fling {
+
+        private final int[] mTemp = new int[2];
+        private int mVelocityX;
+        private int mVelocityY;
+        private int mDx;
+        private int mDy;
+        private int mLastX;
+        private int mLastY;
+
+        public PageFling(Context context) {
+            super(context);
+        }
+
+        public void startFling(int velocityX, int minX, int maxX,
+                               int velocityY, int minY, int maxY) {
+            mVelocityX = velocityX;
+            mVelocityY = velocityY;
+            mDx = (int) (getSplineFlingDistance(velocityX) * Math.signum(velocityX));
+            mDy = (int) (getSplineFlingDistance(velocityY) * Math.signum(velocityY));
+            mLastX = 0;
+            mLastY = 0;
+            int durationX = getSplineFlingDuration(velocityX);
+            int durationY = getSplineFlingDuration(velocityY);
+
+            if (mDx < minX) {
+                durationX = adjustDuration(0, mDx, minX, durationX);
+                mDx = minX;
+            }
+            if (mDx > maxX) {
+                durationX = adjustDuration(0, mDx, maxX, durationX);
+                mDx = maxX;
+            }
+            if (mDy < minY) {
+                durationY = adjustDuration(0, mDy, minY, durationY);
+                mDy = minY;
+            }
+            if (mDy > maxY) {
+                durationY = adjustDuration(0, mDy, maxY, durationY);
+                mDy = maxY;
+            }
+
+            if (mDx == 0 && mDy == 0) {
+                return;
+            }
+
+            setDuration(Math.max(durationX, durationY));
+            start();
+            mGalleryView.invalidate();
+        }
+
+        @Override
+        protected void onCalculate(float progress) {
+            int x = (int) (mDx * progress);
+            int y = (int) (mDy * progress);
+            int offsetX = x - mLastX;
+            int offsetY = y - mLastY;
+            if (mCurrent != null && (offsetX != 0 || offsetY != 0)) {
+                mCurrent.getImageView().scroll(-offsetX, -offsetY, mTemp);
+            }
+            mLastX = x;
+            mLastY = y;
+        }
+    }
+
+    private class SmoothScaler extends Animation {
+
+        private float mFocusX;
+        private float mFocusY;
+        private float mStartScale;
+        private float mEndScale;
+        private float mLastScale;
+
+        public SmoothScaler() {
+            setInterpolator(AnimationUtils.FAST_SLOW_INTERPOLATOR);
+        }
+
+        public void startSmoothScaler(float focusX, float focusY,
+                                      float startScale, float endScale, int duration) {
+            mFocusX = focusX;
+            mFocusY = focusY;
+            mStartScale = startScale;
+            mEndScale = endScale;
+            mLastScale = startScale;
+            setDuration(duration);
+            start();
+            mGalleryView.invalidate();
+        }
+
+        @Override
+        protected void onCalculate(float progress) {
+            if (mCurrent == null) {
+                return;
+            }
+
+            float scale = MathUtils.lerp(mStartScale, mEndScale, progress);
+            mCurrent.getImageView().scale(mFocusX, mFocusY, scale / mLastScale);
+            mLastScale = scale;
+            mScaleValue = scale;
+        }
+    }
+}
@@ -0,0 +1,163 @@
+/*
+ * 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.glgallery;
+
+import androidx.annotation.NonNull;
+
+import com.hippo.glview.image.ImageTexture;
+import com.hippo.glview.image.ImageWrapper;
+import com.hippo.glview.view.GLRootView;
+
+public class SimpleAdapter extends GalleryView.Adapter implements GalleryProvider.Listener {
+
+    private final GalleryProvider mProvider;
+    private final ImageTexture.Uploader mUploader;
+    private boolean mShowIndex = true;
+
+    public SimpleAdapter(@NonNull GLRootView glRootView, @NonNull GalleryProvider provider) {
+        mProvider = provider;
+        mUploader = new ImageTexture.Uploader(glRootView);
+    }
+
+    public void clearUploader() {
+        mUploader.clear();
+    }
+
+    public void setShowIndex(boolean show) {
+        mShowIndex = show;
+    }
+
+    @Override
+    public void onBind(GalleryPageView view, int index) {
+        mProvider.request(index);
+        view.showInfo();
+        view.setImage(null);
+        if (mShowIndex) {
+            view.setPage(index + 1);
+        } else {
+            view.hidePage();
+        }
+        view.setProgress(GalleryPageView.PROGRESS_INDETERMINATE);
+        view.setError(null, null);
+    }
+
+    @Override
+    public void onUnbind(GalleryPageView view, int index) {
+        mProvider.cancelRequest(index);
+        view.setImage(null);
+        view.setError(null, null);
+    }
+
+    @Override
+    public String getError() {
+        return mProvider.getError();
+    }
+
+    @Override
+    public int size() {
+        return mProvider.size();
+    }
+
+    @Override
+    public void onDataChanged() {
+        mGalleryView.onDataChanged();
+    }
+
+    @Override
+    public void onPageWait(int index) {
+        GalleryPageView page = findPageByIndex(index);
+        if (page != null) {
+            page.showInfo();
+            page.setImage(null);
+            if (mShowIndex) {
+                page.setPage(index + 1);
+            } else {
+                page.hidePage();
+            }
+            page.setProgress(GalleryPageView.PROGRESS_INDETERMINATE);
+            page.setError(null, null);
+        }
+    }
+
+    @Override
+    public void onPagePercent(int index, float percent) {
+        GalleryPageView page = findPageByIndex(index);
+        if (page != null) {
+            page.showInfo();
+            page.setImage(null);
+            if (mShowIndex) {
+                page.setPage(index + 1);
+            } else {
+                page.hidePage();
+            }
+            page.setProgress(percent);
+            page.setError(null, null);
+        }
+    }
+
+    @Override
+    public void onPageSucceed(int index, ImageWrapper image) {
+        GalleryPageView page = findPageByIndex(index);
+        if (page != null) {
+            if (image.obtain()) {
+                ImageTexture imageTexture = new ImageTexture(image);
+                mUploader.addTexture(imageTexture);
+                page.showImage();
+                page.setImage(imageTexture);
+                if (mShowIndex) {
+                    page.setPage(index + 1);
+                } else {
+                    page.hidePage();
+                }
+                page.setProgress(GalleryPageView.PROGRESS_GONE);
+                page.setError(null, null);
+            } else {
+                // The image is recycled, request again.
+                // TODO request loop ?
+                mProvider.request(index);
+            }
+        }
+    }
+
+    @Override
+    public void onPageFailed(int index, String error) {
+        GalleryPageView page = findPageByIndex(index);
+        if (page != null) {
+            page.showInfo();
+            page.setImage(null);
+            if (mShowIndex) {
+                page.setPage(index + 1);
+            } else {
+                page.hidePage();
+            }
+            page.setProgress(GalleryPageView.PROGRESS_GONE);
+            page.setError(error, mGalleryView);
+        }
+    }
+
+    @Override
+    public void onDataChanged(int index) {
+        GalleryPageView page = findPageByIndex(index);
+        if (page != null) {
+            mProvider.request(index);
+        }
+    }
+
+    private GalleryPageView findPageByIndex(int index) {
+        return mGalleryView != null ? mGalleryView.findPageByIndex(index) : null;
+    }
+}
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.anim;
+
+import com.hippo.glview.glrenderer.GLCanvas;
+import com.hippo.yorozuya.MathUtils;
+
+public class AlphaAnimation extends CanvasAnimation {
+    private final float mStartAlpha;
+    private final float mEndAlpha;
+    private float mCurrentAlpha;
+
+    public AlphaAnimation(float from, float to) {
+        mStartAlpha = from;
+        mEndAlpha = to;
+        mCurrentAlpha = from;
+    }
+
+    @Override
+    public void apply(GLCanvas canvas) {
+        canvas.multiplyAlpha(mCurrentAlpha);
+    }
+
+    @Override
+    public int getCanvasSaveFlags() {
+        return GLCanvas.SAVE_FLAG_ALPHA;
+    }
+
+    @Override
+    protected void onCalculate(float progress) {
+        mCurrentAlpha = MathUtils.clamp(mStartAlpha +
+                (mEndAlpha - mStartAlpha) * progress, 0f, 1f);
+    }
+}
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.anim;
+
+import android.os.SystemClock;
+import android.view.animation.Interpolator;
+
+import com.hippo.yorozuya.MathUtils;
+
+// Animation calculates a value according to the current input time.
+//
+// 1. First we need to use setDuration(int) to set the duration of the
+//    animation. The duration is in milliseconds.
+// 2. Then we should call start(). The actual start time is the first value
+//    passed to calculate(long).
+// 3. Each time we want to get an animation value, we call
+//    calculate(long currentTimeMillis) to ask the Animation to calculate it.
+//    The parameter passed to calculate(long) should be nonnegative.
+// 4. Use get() to get that value.
+//
+// In step 3, onCalculate(float progress) is called so subclasses can calculate
+// the value according to progress (progress is a value in [0,1]).
+//
+// Before onCalculate(float) is called, There is an optional interpolator which
+// can change the progress value. The interpolator can be set by
+// setInterpolator(Interpolator). If the interpolator is used, the value passed
+// to onCalculate may be (for example, the overshoot effect).
+//
+// The isActive() method returns true after the animation start() is called and
+// before calculate is passed a value which reaches the duration of the
+// animation.
+//
+// The start() method can be called again to restart the Animation.
+//
+abstract public class Animation {
+    /**
+     * When the animation reaches the end and <code>repeatCount</code> is INFINITE
+     * or a positive value, the animation restarts from the beginning.
+     */
+    public static final int RESTART = 1;
+    /**
+     * When the animation reaches the end and <code>repeatCount</code> is INFINITE
+     * or a positive value, the animation reverses direction on every iteration.
+     */
+    public static final int REVERSE = 2;
+    /**
+     * This value used used with the {@link #setRepeatCount(int)} property to repeat
+     * the animation indefinitely.
+     */
+    public static final int INFINITE = -1;
+    private static final long ANIMATION_START = -1;
+    private static final long NO_ANIMATION = -2;
+    private long mStartTime = NO_ANIMATION;
+    private long mDuration;
+    private Interpolator mInterpolator;
+    private int mRepeatCount;
+    private int mRepeatMode;
+
+    private int mRunnedCount;
+    private long mLastFrameTime;
+
+    public void setInterpolator(Interpolator interpolator) {
+        mInterpolator = interpolator;
+    }
+
+    public void setDuration(long duration) {
+        mDuration = duration;
+    }
+
+    public void setRepeatCount(int repeatCount) {
+        mRepeatCount = repeatCount;
+    }
+
+    public void setRepeatMode(int repeatMode) {
+        mRepeatMode = repeatMode;
+    }
+
+    public boolean isRunning() {
+        return mStartTime > 0 || mStartTime == ANIMATION_START;
+    }
+
+    public long getLastFrameTime() {
+        return mLastFrameTime;
+    }
+
+    public void start() {
+        if (mStartTime == NO_ANIMATION) {
+            mStartTime = ANIMATION_START;
+            mRunnedCount = 0;
+            mLastFrameTime = 0;
+        }
+    }
+
+    public void startAt(long time) {
+        start();
+        setStartTime(time);
+    }
+
+    public void startNow() {
+        start();
+        setStartTime(SystemClock.uptimeMillis());
+    }
+
+    public void setStartTime(long time) {
+        mStartTime = time;
+    }
+
+    public void cancel() {
+        mStartTime = NO_ANIMATION;
+    }
+
+    public void reset() {
+        mStartTime = ANIMATION_START;
+        mRunnedCount = 0;
+        mLastFrameTime = 0;
+    }
+
+    // TODO mRepeatMode
+    public boolean calculate(long currentTimeMillis) {
+        if (mStartTime == NO_ANIMATION) {
+            return false;
+        }
+        if (mStartTime == ANIMATION_START) {
+            mStartTime = currentTimeMillis;
+        }
+        mLastFrameTime = currentTimeMillis;
+
+        long elapse = currentTimeMillis - mStartTime;
+        float x = MathUtils.clamp(mDuration == 0.0f ? 1.0f : (float) elapse / mDuration, 0.0f, 1.0f); // Avoid NaN
+        Interpolator i = mInterpolator;
+        onCalculate(i != null ? i.getInterpolation(x) : x);
+
+        // It is ok to call cancel() in onCalculate()
+        if (mStartTime != NO_ANIMATION && elapse >= mDuration) {
+            mRunnedCount++;
+            if (mRunnedCount >= mRepeatCount && mRepeatCount != INFINITE) {
+                onFinish();
+                mStartTime = NO_ANIMATION;
+            } else {
+                mStartTime += elapse;
+            }
+        }
+
+        return mStartTime != NO_ANIMATION;
+    }
+
+    abstract protected void onCalculate(float progress);
+
+    protected void onFinish() {
+    }
+}
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.anim;
+
+import com.hippo.glview.glrenderer.GLCanvas;
+
+public abstract class CanvasAnimation extends Animation {
+
+    public abstract int getCanvasSaveFlags();
+
+    public abstract void apply(GLCanvas canvas);
+}
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.anim;
+
+import com.hippo.yorozuya.MathUtils;
+
+public class FloatAnimation extends Animation {
+
+    private float mFrom;
+    private float mTo;
+    private float mCurrent;
+
+    public void setRange(float from, float to) {
+        mFrom = from;
+        mTo = to;
+    }
+
+    @Override
+    protected void onCalculate(float progress) {
+        mCurrent = MathUtils.lerp(mFrom, mTo, progress);
+    }
+
+    public float get() {
+        return mCurrent;
+    }
+}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 Hippo Seven
+ * 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.
@@ -14,18 +14,14 @@
 * limitations under the License.
 */

-package com.hippo.a7zip;
+package com.hippo.glview.annotation;

-import androidx.annotation.Keep;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;

-@Keep
-public class PasswordException extends ArchiveException {
-
-    public PasswordException(String message) {
-        super(message);
-    }
-
-    public PasswordException(String message, Throwable cause) {
-        super(message, cause);
-    }
+@Retention(RetentionPolicy.SOURCE)
+@Target({ElementType.METHOD, ElementType.CONSTRUCTOR, ElementType.TYPE})
+public @interface RenderThread {
 }
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.glrenderer;
+
+import android.graphics.RectF;
+import android.util.Log;
+
+import com.hippo.yorozuya.MathUtils;
+
+import java.util.WeakHashMap;
+
+// BasicTexture is a Texture corresponds to a real GL texture.
+// The state of a BasicTexture indicates whether its data is loaded to GL memory.
+// If a BasicTexture is loaded into GL memory, it has a GL texture id.
+public abstract class BasicTexture implements Texture {
+
+    protected static final int UNSPECIFIED = -1;
+    protected static final int STATE_UNLOADED = 0;
+    protected static final int STATE_LOADED = 1;
+    protected static final int STATE_ERROR = -1;
+    private static final String TAG = "BasicTexture";
+    // Log a warning if a texture is larger along a dimension
+    private static final int MAX_TEXTURE_SIZE = 4096;
+    private final static WeakHashMap<BasicTexture, Object> sAllTextures
+            = new WeakHashMap<>();
+    private static final ThreadLocal<Class> sInFinalizer = new ThreadLocal<>();
+    protected int mId = -1;
+    protected int mState;
+    protected int mWidth = UNSPECIFIED;
+    protected int mHeight = UNSPECIFIED;
+    protected int mTextureWidth;
+    protected int mTextureHeight;
+    protected GLCanvas mCanvasRef = null;
+    private boolean mHasBorder;
+
+    protected BasicTexture(GLCanvas canvas, int id, int state) {
+        setAssociatedCanvas(canvas);
+        mId = id;
+        mState = state;
+        synchronized (sAllTextures) {
+            sAllTextures.put(this, null);
+        }
+    }
+
+    protected BasicTexture() {
+        this(null, 0, STATE_UNLOADED);
+    }
+
+    // This is for deciding if we can call Bitmap's recycle().
+    // We cannot call Bitmap's recycle() in finalizer because at that point
+    // the finalizer of Bitmap may already be called so recycle() will crash.
+    public static boolean inFinalizer() {
+        return sInFinalizer.get() != null;
+    }
+
+    public static void yieldAllTextures() {
+        synchronized (sAllTextures) {
+            for (BasicTexture t : sAllTextures.keySet()) {
+                t.yield();
+            }
+        }
+    }
+
+    public static void invalidateAllTextures() {
+        synchronized (sAllTextures) {
+            for (BasicTexture t : sAllTextures.keySet()) {
+                t.mState = STATE_UNLOADED;
+                t.setAssociatedCanvas(null);
+            }
+        }
+    }
+
+    protected void setAssociatedCanvas(GLCanvas canvas) {
+        mCanvasRef = canvas;
+    }
+
+    /**
+     * Sets the content size of this texture. In OpenGL, the actual texture
+     * size must be of power of 2, the size of the content may be smaller.
+     */
+    public void setSize(int width, int height) {
+        mWidth = width;
+        mHeight = height;
+        mTextureWidth = width > 0 ? MathUtils.nextPowerOf2(width) : 0;
+        mTextureHeight = height > 0 ? MathUtils.nextPowerOf2(height) : 0;
+        if (mTextureWidth > MAX_TEXTURE_SIZE || mTextureHeight > MAX_TEXTURE_SIZE) {
+            Log.w(TAG, String.format("texture is too large: %d x %d",
+                    mTextureWidth, mTextureHeight), new Exception());
+        }
+    }
+
+    public boolean isFlippedVertically() {
+        return false;
+    }
+
+    public int getId() {
+        return mId;
+    }
+
+    @Override
+    public int getWidth() {
+        return mWidth;
+    }
+
+    @Override
+    public int getHeight() {
+        return mHeight;
+    }
+
+    // Returns the width rounded to the next power of 2.
+    public int getTextureWidth() {
+        return mTextureWidth;
+    }
+
+    // Returns the height rounded to the next power of 2.
+    public int getTextureHeight() {
+        return mTextureHeight;
+    }
+
+    // Returns true if the texture has one pixel transparent border around the
+    // actual content. This is used to avoid jigged edges.
+    //
+    // The jigged edges appear because we use GL_CLAMP_TO_EDGE for texture wrap
+    // mode (GL_CLAMP is not available in OpenGL ES), so a pixel partially
+    // covered by the texture will use the color of the edge texel. If we add
+    // the transparent border, the color of the edge texel will be mixed with
+    // appropriate amount of transparent.
+    //
+    // Currently our background is black, so we can draw the thumbnails without
+    // enabling blending.
+    public boolean hasBorder() {
+        return mHasBorder;
+    }
+
+    protected void setBorder(boolean hasBorder) {
+        mHasBorder = hasBorder;
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y) {
+        canvas.drawTexture(this, x, y, getWidth(), getHeight());
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y, int w, int h) {
+        canvas.drawTexture(this, x, y, w, h);
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, RectF source, RectF target) {
+        canvas.drawTexture(this, source, target);
+    }
+
+    // onBind is called before GLCanvas binds this texture.
+    // It should make sure the data is uploaded to GL memory.
+    abstract protected boolean onBind(GLCanvas canvas);
+
+    // Returns the GL texture target for this texture (e.g. GL_TEXTURE_2D).
+    abstract protected int getTarget();
+
+    public boolean isLoaded() {
+        return mState == STATE_LOADED;
+    }
+
+    // recycle() is called when the texture will never be used again,
+    // so it can free all resources.
+    public void recycle() {
+        freeResource();
+    }
+
+    // yield() is called when the texture will not be used temporarily,
+    // so it can free some resources.
+    // The default implementation unloads the texture from GL memory, so
+    // the subclass should make sure it can reload the texture to GL memory
+    // later, or it will have to override this method.
+    public void yield() {
+        freeResource();
+    }
+
+    private void freeResource() {
+        GLCanvas canvas = mCanvasRef;
+        if (canvas != null && mId != -1) {
+            canvas.unloadTexture(this);
+            mId = -1; // Don't free it again.
+        }
+        mState = STATE_UNLOADED;
+        setAssociatedCanvas(null);
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            sInFinalizer.set(BasicTexture.class);
+            recycle();
+            sInFinalizer.set(null);
+        } finally {
+            super.finalize();
+        }
+    }
+}
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.glrenderer;
+
+import android.graphics.Bitmap;
+
+import com.hippo.yorozuya.AssertUtils;
+
+// BitmapTexture is a texture whose content is specified by a fixed Bitmap.
+//
+// The texture does not own the Bitmap. The user should make sure the Bitmap
+// is valid during the texture's lifetime. When the texture is recycled, it
+// does not free the Bitmap.
+public class BitmapTexture extends UploadedTexture {
+    protected Bitmap mContentBitmap;
+
+    public BitmapTexture(Bitmap bitmap) {
+        this(bitmap, false);
+    }
+
+    public BitmapTexture(Bitmap bitmap, boolean hasBorder) {
+        super(hasBorder);
+        AssertUtils.assertTrue(bitmap != null && !bitmap.isRecycled());
+        mContentBitmap = bitmap;
+    }
+
+    @Override
+    protected void onFreeBitmap(Bitmap bitmap) {
+        // Do nothing.
+    }
+
+    @Override
+    protected Bitmap onGetBitmap() {
+        return mContentBitmap;
+    }
+
+    public Bitmap getBitmap() {
+        return mContentBitmap;
+    }
+}
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.glrenderer;
+
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.Config;
+import android.graphics.Canvas;
+
+// CanvasTexture is a texture whose content is the drawing on a Canvas.
+// The subclasses should override onDraw() to draw on the bitmap.
+// By default CanvasTexture is not opaque.
+abstract class CanvasTexture extends UploadedTexture {
+    private final Config mConfig;
+
+    public CanvasTexture(int width, int height) {
+        mConfig = Config.ARGB_8888;
+        setSize(width, height);
+        setOpaque(false);
+    }
+
+    @Override
+    protected Bitmap onGetBitmap() {
+        Bitmap bitmap = Bitmap.createBitmap(mWidth, mHeight, mConfig);
+        Canvas canvas = new Canvas(bitmap);
+        onDraw(canvas, bitmap);
+        return bitmap;
+    }
+
+    @Override
+    protected void onFreeBitmap(Bitmap bitmap) {
+        if (!inFinalizer()) {
+            bitmap.recycle();
+        }
+    }
+
+    abstract protected void onDraw(Canvas canvas, Bitmap backing);
+}
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2010 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 com.hippo.glview.glrenderer;
+
+import android.graphics.RectF;
+
+import com.hippo.yorozuya.ColorUtils;
+
+// ColorTexture is a texture which fills the rectangle with the specified color.
+public class ColorTexture implements Texture {
+
+    private final int mColor;
+    private int mWidth = 0;
+    private int mHeight = 0;
+
+    public ColorTexture(int color) {
+        mColor = color;
+    }
+
+    private boolean isValidSize() {
+        return mWidth > 0 && mHeight > 0;
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y) {
+        if (isValidSize()) {
+            draw(canvas, x, y, mWidth, mHeight);
+        }
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y, int w, int h) {
+        canvas.fillRect(x, y, w, h, mColor);
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, RectF source, RectF target) {
+        canvas.fillRect(target.left, target.top, target.width(), target.height(), mColor);
+    }
+
+    @Override
+    public boolean isOpaque() {
+        return ColorUtils.isOpaque(mColor);
+    }
+
+    public void setSize(int width, int height) {
+        mWidth = width;
+        mHeight = height;
+    }
+
+    @Override
+    public int getWidth() {
+        return mWidth;
+    }
+
+    @Override
+    public int getHeight() {
+        return mHeight;
+    }
+}
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2012 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 com.hippo.glview.glrenderer;
+
+// ExtTexture is a texture whose content comes from a external texture.
+// Before drawing, setSize() should be called.
+public class ExtTexture extends BasicTexture {
+
+    private final int mTarget;
+
+    public ExtTexture(GLCanvas canvas, int target) {
+        GLId glId = canvas.getGLId();
+        mId = glId.generateTexture();
+        mTarget = target;
+    }
+
+    private void uploadToCanvas(GLCanvas canvas) {
+        canvas.setTextureParameters(this);
+        setAssociatedCanvas(canvas);
+        mState = STATE_LOADED;
+    }
+
+    @Override
+    protected boolean onBind(GLCanvas canvas) {
+        if (!isLoaded()) {
+            uploadToCanvas(canvas);
+        }
+
+        return true;
+    }
+
+    @Override
+    public int getTarget() {
+        return mTarget;
+    }
+
+    @Override
+    public boolean isOpaque() {
+        return true;
+    }
+
+    @Override
+    public void yield() {
+        // we cannot free the texture because we have no backup.
+    }
+}
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 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 com.hippo.glview.glrenderer;
+
+
+import android.graphics.RectF;
+
+// FadeInTexture is a texture which begins with a color, then gradually animates
+// into a given texture.
+public class FadeInTexture extends FadeTexture implements Texture {
+
+    private final int mColor;
+    private final TiledTexture mTexture;
+
+    public FadeInTexture(int color, TiledTexture texture) {
+        super(texture.getWidth(), texture.getHeight(), texture.isOpaque());
+        mColor = color;
+        mTexture = texture;
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y, int w, int h) {
+        if (isAnimating()) {
+            mTexture.drawMixed(canvas, mColor, getRatio(), x, y, w, h);
+        } else {
+            mTexture.draw(canvas, x, y, w, h);
+        }
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, RectF source, RectF target) {
+        if (isAnimating()) {
+            mTexture.drawMixed(canvas, mColor, getRatio(), source, target);
+        } else {
+            mTexture.draw(canvas, source, target);
+        }
+    }
+}
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 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 com.hippo.glview.glrenderer;
+
+
+import android.graphics.RectF;
+
+// FadeOutTexture is a texture which begins with a given texture, then gradually animates
+// into fading out totally.
+public class FadeOutTexture extends FadeTexture {
+
+    private final BasicTexture mTexture;
+
+    public FadeOutTexture(BasicTexture texture) {
+        super(texture.getWidth(), texture.getHeight(), texture.isOpaque());
+        mTexture = texture;
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, int x, int y, int w, int h) {
+        if (isAnimating()) {
+            canvas.save(GLCanvas.SAVE_FLAG_ALPHA);
+            canvas.setAlpha(getRatio());
+            mTexture.draw(canvas, x, y, w, h);
+            canvas.restore();
+        }
+    }
+
+    @Override
+    public void draw(GLCanvas canvas, RectF source, RectF target) {
+        if (isAnimating()) {
+            canvas.save(GLCanvas.SAVE_FLAG_ALPHA);
+            canvas.setAlpha(getRatio());
+            mTexture.draw(canvas, source, target);
+            canvas.restore();
+        }
+    }
+}