feat: update action manager

- add and delete some actions in action manager.
- rename "fit to view" to "fit to screen".
- update main window right click menu and toolbar.
- use special state update slot in action manager instead of function located in main window.

.github/workflows/deepin.yml

@@ -1,35 +0,0 @@
-name: deepin 25 CI
-
-on: [push, pull_request, workflow_dispatch]
-
-jobs:
-  build-deepin-25-deb:
-    runs-on: ubuntu-latest
-    container:
-      image: linuxdeepin/deepin:crimson
-      options: --user root
-
-    steps:
-      - name: Update package lists and install basic tools
-        run: |
-          apt update
-          apt install -y git ca-certificates curl file
-      - uses: actions/checkout@v6
-      - name: Get build dept.
-        run: |
-          apt install -y cmake qt6-base-dev qt6-svg-dev qt6-tools-dev libexiv2-dev
-      - name: Build it
-        run: |
-          git config --global --add safe.directory '*' # to avoid "fatal: detected dubious ownership in repository at xxx"
-          cmake -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr .
-          cmake --build build -j
-          cd build
-          cpack -G DEB
-      - name: Try install it
-        run: |
-          cd build
-          apt install -y ./*.deb
-      - uses: actions/upload-artifact@v6
-        with:
-          name: deepin-25-deb-package
-          path: build/*.deb

.github/workflows/windows.yml

@@ -79,7 +79,7 @@ jobs:
         ren .\exiv2-0.28.7-2022msvc-AMD64 dependencies_bin
         echo ::endgroup::
         echo ::group::===== zlib =====
-        curl -fsSL -o zlib_src.zip https://zlib.net/zlib132.zip
+        curl -fsSL -o zlib_src.zip https://github.com/madler/zlib/releases/download/v1.3.2/zlib132.zip
         7z x zlib_src.zip -y -o"dependencies_src"
         ren .\dependencies_src\zlib-1.3.2 zlib || goto :error
         cmake ./dependencies_src/zlib -Bbuild_dependencies/zlib -DCMAKE_INSTALL_PREFIX="dependencies_bin" || goto :error
@@ -125,10 +125,6 @@ jobs:
         cmake --build build --config Release
         cmake --install build --config Release --prefix "%PWD%\build"
         echo ::endgroup::
-        echo ::group::===== passoc stuff =====
-        curl -fsSL -o passoc-standalone.zip https://github.com/BLumia/pineapple-assoc-manager/releases/latest/download/pineapple-assoc-manager-qt${{ matrix.qt_ver }}-standalone.zip
-        7z x passoc-standalone.zip passoc.exe -y -o"build/bin"
-        echo ::endgroup::
         :: ------ pkg ------
         windeployqt --verbose=2 --no-compiler-runtime --no-quick-import --no-translations --no-network --no-opengl-sw --no-system-d3d-compiler --no-system-dxc-compiler --skip-plugin-types tls,networkinformation build\bin\ppic.exe
         robocopy ./dependencies_bin/bin build/bin *.dll

CMakeLists.txt

@@ -4,7 +4,7 @@
 
 cmake_minimum_required(VERSION 3.16)
 
-project(pineapple-pictures VERSION 1.4.1) # don't forget to update NEWS file and AppStream metadata.
+project(pineapple-pictures VERSION 1.5.0) # don't forget to update NEWS file and AppStream metadata.
 
 include(GNUInstallDirs)
 include(FeatureSummary)
@@ -16,10 +16,11 @@ set (CMAKE_CXX_STANDARD 17)
 set (CMAKE_CXX_STANDARD_REQUIRED ON)
 set (CMAKE_AUTOMOC ON)
 set (CMAKE_AUTORCC ON)
+set (CMAKE_AUTOUIC ON)
 
 find_package(QT NAMES Qt6 REQUIRED COMPONENTS Core)
 
-set (QT_MINIMUM_VERSION "6.4")
+set (QT_MINIMUM_VERSION "6.5")
 
 find_package(Qt${QT_VERSION_MAJOR} ${QT_MINIMUM_VERSION} REQUIRED
     COMPONENTS Widgets Svg SvgWidgets LinguistTools
@@ -45,8 +46,6 @@ set (PPIC_CPP_FILES
     app/graphicsscene.cpp
     app/bottombuttongroup.cpp
     app/navigatorview.cpp
-    app/opacityhelper.cpp
-    app/toolbutton.cpp
     app/settings.cpp
     app/settingsdialog.cpp
     app/aboutdialog.cpp
@@ -54,7 +53,6 @@ set (PPIC_CPP_FILES
     app/metadatadialog.cpp
     app/exiv2wrapper.cpp
     app/playlistmanager.cpp
-    app/shortcutedit.cpp
     app/fileopeneventhandler.cpp
 )
 
@@ -66,8 +64,6 @@ set (PPIC_HEADER_FILES
     app/graphicsscene.h
     app/bottombuttongroup.h
     app/navigatorview.h
-    app/opacityhelper.h
-    app/toolbutton.h
     app/settings.h
     app/settingsdialog.h
     app/aboutdialog.h
@@ -75,10 +71,15 @@ set (PPIC_HEADER_FILES
     app/metadatadialog.h
     app/exiv2wrapper.h
     app/playlistmanager.h
-    app/shortcutedit.h
     app/fileopeneventhandler.h
 )
 
+set (PPIC_UI_FILES
+    app/settingsdialog.ui
+    app/aboutdialog.ui
+    app/metadatadialog.ui
+)
+
 set (PPIC_QRC_FILES
     assets/resources.qrc
 )
@@ -101,6 +102,7 @@ endif ()
 add_executable (${EXE_NAME}
     ${PPIC_HEADER_FILES}
     ${PPIC_CPP_FILES}
+    ${PPIC_UI_FILES}
     ${PPIC_QRC_FILES}
     ${PPIC_RC_FILES}
 )
@@ -271,12 +273,6 @@ if (DEFINED QM_FILE_INSTALL_DIR)
 endif()
 
 if (WIN32)
-    install(
-        FILES dist/passoc/ppic.pacfg
-        DESTINATION ${CMAKE_INSTALL_BINDIR}
-        RENAME default-assoc.pacfg
-    )
-
     install(
         FILES
             dist/passoc/generic.ico

NEWS

@@ -1,3 +1,21 @@
+Version 1.5.0
+~~~~~~~~~~~~~
+Released: 2026-07-04
+
+Features:
+ * Introduced an optional titlebar that display file name and allows drag and double-click to move and toggle maximize state
+ * Windows: Now the application will use the system's built-in animation for open window animation
+
+Bugfixes:
+ * Show empty url list should also reset window title to blank
+
+Miscellaneous:
+ * Update translations
+ * Add vcs-browser link to AppStream metadata
+
+Contributors:
+ Heimen Stoffels (vistaus), VenusGirl (VenusGirl)
+
 Version 1.4.1
 ~~~~~~~~~~~~~
 Released: 2026-04-05

README.md

@@ -1,4 +1,17 @@
-Yet another image viewer.
+# Sarasas Chip Workshop Picture
+
+Yet another legacy Windows Photo Viewer with cross-platform support.
+
+> [!IMPORTANT]
+> SarasaCW Picture are still in refactoring. Please do not use it until this message removes.
+
+## Summary
+
+Sarasas Chip Workshop Picture (abbr. SarasaCW Picture) is a lightweight image viewer that has cross-platform support and similar user interface about legacy Windows Photo Viewer. It allows you view JPEG, PNG, GIF, SVG, PSD, KRA, XCF, TGA, HDR, AVIF and some other frequently used image formats files quickly and easily without changing your long-term Windows usage experience.
+
+SarasaCW Picture is the **hard fork** of [Pineapple Pictures](https://github.com/BLumia/pineapple-pictures) since Pineapple Pictures 1.4.1 version.
+
+<!--
 
 |CI|Build Status|
 |---|---|
@@ -8,10 +21,6 @@ Yet another image viewer.
 
 ![Pineapple Pictures - Main Window](https://repository-images.githubusercontent.com/211888654/e8697600-e370-11eb-9b2a-b71e05262954)
 
-## Summary
-
-Pineapple Pictures is a lightweight image viewer that allows you view JPEG, PNG, GIF, SVG, PSD, KRA, XCF, TGA, HDR, AVIF and some other frequently used image formats files quickly and easily, and also provide a Stay-on-Top window setting that allows you pin the window so you can use it to pin a reference image at the top and then you can work with other software.
-
 ## Get it!
 
 ### Maintained by the original author
@@ -71,3 +80,5 @@ It's possible to build it under Windows, Linux, macOS, and maybe other desktop p
 ## License
 
 Pineapple Pictures as a whole is licensed under MIT license. Individual files may have a different, but compatible license.
+
+-->

README.zh_CN.md

@@ -1,3 +1,18 @@
+# Sarasas Chip Workshop 照片查看器
+
+简单轻量的、具有跨平台支持的、经典样式的 Windows 照片查看器。
+
+> [!IMPORTANT]
+> SarasaCW 照片查看器还在重构中。在这条信息被移除之前请不要使用它。
+
+## 简介
+
+Sarasas Chip Workshop 照片查看器（简称 SarasaCW 照片查看器）是一个轻量级的图片查看器。支持跨平台。界面风格类似于经典的 Windows 照片查看器。它可以让你快速轻松地浏览 JPEG、PNG、GIF、SVG、PSD、KRA、XCF、TGA、HDR、AVIF 以及其他一些常用的图片格式，且无需改变你长期的 Windows 使用习惯。
+
+SarasaCW 照片查看器是[菠萝看图](https://github.com/BLumia/pineapple-pictures)的**硬分叉**，该分叉自菠萝看图 1.4.1 版本开始。
+
+<!--
+
 简单轻量的跨平台看图工具。
 
 |CI|构建状态|
@@ -8,10 +23,6 @@
 
 ![Pineapple Pictures - Main Window](https://repository-images.githubusercontent.com/211888654/e8697600-e370-11eb-9b2a-b71e05262954)
 
-## 简介
-
-菠萝看图是一个轻量图像查看器，允许你简单快捷的查看 JPEG, PNG, GIF, SVG, PSD, KRA, XCF, TGA, HDR, AVIF 等常用格式的图像文件，并提供了置顶窗口的选项以便你在使用其它软件时也可以将参考图片固定在顶端。
-
 ## 立即获取!
 
 ### 由原作者维护
@@ -72,3 +83,5 @@ $ cmake --build . # 如果你使用 Makefile 作为 CMake 生成器，也可以
 ## 许可协议
 
 菠萝看图整体使用 MIT 协议进行发布。项目所随的部分源文件可能具备不同但与之兼容的许可协议。
+
+-->

app/aboutdialog.cpp

@@ -3,176 +3,94 @@
 // SPDX-License-Identifier: MIT
 
 #include "aboutdialog.h"
+#include "ui_aboutdialog.h"
 
-#include <QAbstractButton>
-#include <QDialogButtonBox>
-#include <QTextBrowser>
-#include <QTabWidget>
-#include <QVBoxLayout>
 #include <QApplication>
-#include <QLabel>
-#include <QPushButton>
 #include <QFile>
 
 using namespace Qt::Literals::StringLiterals;
 
+static QString loadEmbeddedHtml(QString&& path) {
+    QFile htmlFile(path);
+    bool canOpenFile = htmlFile.open(QIODevice::ReadOnly);
+    QByteArray htmlRawContent = canOpenFile ? htmlFile.readAll() : QByteArrayLiteral("");
+    return QString::fromUtf8(htmlRawContent);
+}
+
 AboutDialog::AboutDialog(QWidget *parent)
-    : QDialog(parent)
-    , m_tabWidget(new QTabWidget)
-    , m_buttonBox(new QDialogButtonBox)
-    , m_helpTextEdit(new QTextBrowser)
-    , m_aboutTextEdit(new QTextBrowser)
-    , m_specialThanksTextEdit(new QTextBrowser)
-    , m_licenseTextEdit(new QTextBrowser)
-    , m_3rdPartyLibsTextEdit(new QTextBrowser)
+    : QDialog(parent), ui(new QT_PREPEND_NAMESPACE(Ui::AboutDialog))
 {
-    this->setWindowTitle(tr("About"));
+    ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
-    const QStringList helpStr {
-        u"<p>%1</p>"_s.arg(tr("Launch application with image file path as argument to load the file.")),
-        u"<p>%1</p>"_s.arg(tr("Drag and drop image file onto the window is also supported.")),
-        u"<p>%1</p>"_s.arg(tr("None of the operations in this application will alter the pictures on disk.")),
-        u"<p>%1</p>"_s.arg(tr("Context menu option explanation:")),
-        u"<ul>"_s,
     // blumia: Chain two arg() here since it seems lupdate will remove one of them if we use
     //         the old `arg(QCoreApp::translate(), tr())` way, but it's worth to mention
     //         `arg(QCoreApp::translate(), this->tr())` works, but lupdate will complain about the usage.
-        u"<li><b>%1</b>:<br/>%2</li>"_s
-            .arg(QCoreApplication::translate("MainWindow", "Stay on top"))
-            .arg(tr("Make window stay on top of all other windows.")),
-        u"<li><b>%1</b>:<br/>%2</li>"_s
-            .arg(QCoreApplication::translate("MainWindow", "Protected mode"))
-            .arg(tr("Avoid close window accidentally. (eg. by double clicking the window)")),
-        u"<li><b>%1</b>:<br/>%2</li>"_s
-            .arg(QCoreApplication::translate("MainWindow", "Keep transformation", "The 'transformation' means the flip/rotation status that currently applied to the image view"))
-            .arg(tr("Avoid resetting the zoom/rotation/flip state that was applied to the image view when switching between images.")),
-        u"</ul>"_s
-    };
+    const QString HELP_HTML = loadEmbeddedHtml(u":/plain/help.html"_s)
+        .arg(tr("General Help"))
+        .arg(tr("Launch application with image file path as argument to load the file."))
+        .arg(tr("Passing in a single image file will load all the images in that directory and start viewing from that image."))
+        .arg(tr("Passing in multiple image files lets you view them one by one."))
+        .arg(tr("Drag and drop image file onto the window is also supported."))
+        .arg(tr("None of the operations in this application will alter the pictures on disk."))
+        .arg(tr("Context Menu Help"))
+        .arg(tr("Keep transformation", "The same meaning of MainWindow's Keep transformation."))
+        .arg(tr("Avoid resetting the zoom/rotation/flip state that was applied to the image view when switching between images."))
+        .arg(tr("Checkerboard", "The same meaning of MainWindow's Checkerboard."))
+        .arg(tr("Checkerboard light and dark theme can be adjusted in the configuration window, or easily switch it by holding Shift and clicking the button."));
 
-    const QStringList aboutStr {
-        u"<center><img width='128' height='128' src=':/icons/app-icon.svg'/><br/>"_s,
-        qApp->applicationDisplayName(),
-        (u"<br/>"_s + tr("Version: %1").arg(
+    const QString APP_NAME_ARG = qApp->applicationDisplayName();
+    const QString APP_VERSION_ARG =
 #ifdef GIT_DESCRIBE_VERSION_STRING
-            GIT_DESCRIBE_VERSION_STRING
+        GIT_DESCRIBE_VERSION_STRING;
 #else
-            qApp->applicationVersion()
+        qApp->applicationVersion();
 #endif // GIT_DESCRIBE_VERSION_STRING
-        )),
-        u"<hr/>"_s,
-        tr("Copyright (c) %1 %2", "%1 is year, %2 is the name of copyright holder(s)")
-            .arg(u"2026"_s, u"<a href='https://github.com/BLumia'>@BLumia</a>"_s),
-        u"<br/>"_s,
-        tr("Logo designed by %1").arg(u"<a href='https://github.com/Lovelyblack'>@Lovelyblack</a>"_s),
-        u"<hr/>"_s,
-        tr("Built with Qt %1 (%2)").arg(QT_VERSION_STR, QSysInfo::buildCpuArchitecture()),
-        QStringLiteral("<br/><a href='%1'>%2</a>").arg("https://github.com/BLumia/pineapple-pictures", tr("Source code")),
-        u"</center>"_s
-    };
+    const QString QT_VERSION_ARG = QT_VERSION_STR;
+    const QString QT_ARCH_ARG = QSysInfo::buildCpuArchitecture();
+    const QString ABOUT_HTML = loadEmbeddedHtml(u":/plain/about.html"_s)
+        .arg(APP_NAME_ARG)
+        .arg(tr("Version: %1").arg(APP_VERSION_ARG))
+        .arg(tr("Upstream author"))
+        .arg(tr("Hard fork author"))
+        .arg(tr("Logo designer"))
+        .arg(tr("Built with Qt %1 (%2)").arg(QT_VERSION_ARG).arg(QT_ARCH_ARG))
+        .arg(tr("Source code"));
 
-    QFile translaterHtml(u":/plain/translators.html"_s);
-    bool canOpenFile = translaterHtml.open(QIODevice::ReadOnly);
-    const QByteArray & translatorList = canOpenFile ? translaterHtml.readAll() : QByteArrayLiteral("");
+    const QString SPECIAL_THANKS_HTML = loadEmbeddedHtml(u":/plain/special-thanks.html"_s)
+        .arg(tr("Contributors"))
+        .arg(tr("List of contributors on GitHub"))
+        .arg(tr("Thanks to all people who contributed to this project."))
+        .arg(tr("Translators"))
+        .arg(tr("I would like to thank the following people who volunteered to translate this application."));
 
-    const QStringList specialThanksStr {
-        u"<h1 align='center'>%1</h1><a href='%2'>%3</a><p>%4</p>"_s.arg(
-            tr("Contributors"),
-            u"https://github.com/BLumia/pineapple-pictures/graphs/contributors"_s,
-            tr("List of contributors on GitHub"),
-            tr("Thanks to all people who contributed to this project.")
-        ),
+    const QString LICENSE_HTML = loadEmbeddedHtml(u":/plain/license.html"_s)
+        .arg(tr("License"))
+        .arg(tr("This application is released under the MIT License."))
+        .arg(tr("License Verbatim Copy"));
 
-        u"<h1 align='center'>%1</h1><p>%2</p>%3"_s.arg(
-            tr("Translators"),
-            tr("I would like to thank the following people who volunteered to translate this application."),
-            translatorList
-        )
-    };
+    const QString THIRD_PARTY_LIBS_HTML = loadEmbeddedHtml(u":/plain/third-party-libs.html"_s)
+        .arg(tr("Third-party Libraries"))
+        .arg(tr("This application is built on the following free software libraries.", "Free as in freedom"))
+        .arg(tr("Some of them are optional and might not be included with this distribution depending on the build environment."));
 
-    const QStringList licenseStr {
-        u"<h1 align='center'><b>%1</b></h1>"_s.arg(tr("Your Rights")),
-        u"<p>%1</p><p>%2</p><ul><li>%3</li><li>%4</li><li>%5</li><li>%6</li></ul>"_s.arg(
-            tr("%1 is released under the MIT License."), // %1
-            tr("This license grants people a number of freedoms:"), // %2
-            tr("You are free to use %1, for any purpose"), // %3
-            tr("You are free to distribute %1"), // %4
-            tr("You can study how %1 works and change it"), // %5
-            tr("You can distribute changed versions of %1") // %6
-        ).arg(u"<i>%1</i>"_s),
-        u"<p>%1</p>"_s.arg(tr("The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.")),
-        u"<hr/><pre>%2</pre>"_s
-    };
+    ui->m_helpTextEdit->setHtml(HELP_HTML);
+    ui->m_aboutTextEdit->setHtml(ABOUT_HTML);
+    ui->m_specialThanksTextEdit->setHtml(SPECIAL_THANKS_HTML);
+    ui->m_licenseTextEdit->setHtml(LICENSE_HTML);
+    ui->m_3rdPartyLibsTextEdit->setHtml(THIRD_PARTY_LIBS_HTML);
 
-    const QString mitLicense(QStringLiteral(R"(Expat/MIT License
-
-Copyright &copy; 2026 BLumia
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-)"));
-
-    const QStringList thirdPartyLibsStr {
-        u"<h1 align='center'><b>%1</b></h1>"_s.arg(tr("Third-party Libraries used by %1")),
-        tr("%1 is built on the following free software libraries:", "Free as in freedom"),
-        u"<ul>"_s,
-#ifdef HAVE_EXIV2_VERSION
-        u"<li><a href='%1'>%2</a>: %3</li>"_s.arg("https://www.exiv2.org/", "Exiv2", "GPLv2"),
-#endif // EXIV2_VERSION
-        u"<li><a href='%1'>%2</a>: %3</li>"_s.arg("https://www.qt.io/", "Qt", "GPLv2 + GPLv3 + LGPLv2.1 + LGPLv3"),
-        u"</ul>"_s
-    };
-
-    m_helpTextEdit->setText(helpStr.join('\n'));
-
-    m_aboutTextEdit->setText(aboutStr.join('\n'));
-    m_aboutTextEdit->setOpenExternalLinks(true);
-
-    m_specialThanksTextEdit->setText(specialThanksStr.join('\n'));
-    m_specialThanksTextEdit->setOpenExternalLinks(true);
-
-    m_licenseTextEdit->setText(licenseStr.join('\n').arg(qApp->applicationDisplayName(), mitLicense));
-
-    m_3rdPartyLibsTextEdit->setText(thirdPartyLibsStr.join('\n').arg(u"<i>%1</i>"_s).arg(qApp->applicationDisplayName()));
-    m_3rdPartyLibsTextEdit->setOpenExternalLinks(true);
-
-    m_tabWidget->addTab(m_helpTextEdit, tr("&Help"));
-    m_tabWidget->addTab(m_aboutTextEdit, tr("&About"));
-    m_tabWidget->addTab(m_specialThanksTextEdit, tr("&Special Thanks"));
-    m_tabWidget->addTab(m_licenseTextEdit, tr("&License"));
-    m_tabWidget->addTab(m_3rdPartyLibsTextEdit, tr("&Third-party Libraries"));
-
-    m_buttonBox->setStandardButtons(QDialogButtonBox::Close);
-    connect(m_buttonBox, QOverload<QAbstractButton *>::of(&QDialogButtonBox::clicked), this, [this](){
+    connect(ui->m_buttonBox, QOverload<QAbstractButton *>::of(&QDialogButtonBox::clicked), this, [this](QAbstractButton * btn){
+        Q_UNUSED(btn)
         this->close();
     });
 
-    setLayout(new QVBoxLayout);
-
-    layout()->addWidget(m_tabWidget);
-    layout()->addWidget(m_buttonBox);
-
     setMinimumSize(361, 161); // not sure why it complain "Unable to set geometry"
-    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 }
 
 AboutDialog::~AboutDialog()
 {
-
+    delete ui;
 }
 
 QSize AboutDialog::sizeHint() const

app/aboutdialog.h

@@ -8,9 +8,9 @@
 #include <QDialog>
 
 QT_BEGIN_NAMESPACE
-class QTextBrowser;
-class QTabWidget;
-class QDialogButtonBox;
+namespace Ui {
+class AboutDialog;
+}
 QT_END_NAMESPACE
 
 class AboutDialog : public QDialog
@@ -23,14 +23,7 @@ public:
     QSize sizeHint() const override;
 
 private:
-    QTabWidget * m_tabWidget = nullptr;
-    QDialogButtonBox * m_buttonBox = nullptr;
-
-    QTextBrowser * m_helpTextEdit = nullptr;
-    QTextBrowser * m_aboutTextEdit = nullptr;
-    QTextBrowser * m_specialThanksTextEdit = nullptr;
-    QTextBrowser * m_licenseTextEdit = nullptr;
-    QTextBrowser * m_3rdPartyLibsTextEdit = nullptr;
+    QT_PREPEND_NAMESPACE(Ui::AboutDialog) *ui;
 };
 
 #endif // ABOUTDIALOG_H

app/aboutdialog.ui

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AboutDialog</class>
+ <widget class="QDialog" name="AboutDialog">
+  <property name="windowModality">
+   <enum>Qt::NonModal</enum>
+  </property>
+  <property name="windowTitle">
+   <string>About</string>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>361</width>
+    <height>161</height>
+   </size>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QTabWidget" name="m_tabWidget">
+     <property name="currentIndex">
+      <number>0</number>
+     </property>
+     <widget class="QWidget" name="helpTab">
+      <attribute name="title">
+       <string>&amp;Help</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="helpTabLayout">
+       <item>
+         <widget class="QTextBrowser" name="m_helpTextEdit">
+          <property name="openExternalLinks">
+           <bool>false</bool>
+          </property>
+         </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="aboutTab">
+      <attribute name="title">
+       <string>&amp;About</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="aboutTabLayout">
+       <item>
+         <widget class="QTextBrowser" name="m_aboutTextEdit">
+          <property name="openExternalLinks">
+           <bool>true</bool>
+          </property>
+         </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="specialThanksTab">
+      <attribute name="title">
+       <string>&amp;Special Thanks</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="specialThanksTabLayout">
+       <item>
+         <widget class="QTextBrowser" name="m_specialThanksTextEdit">
+          <property name="openExternalLinks">
+           <bool>true</bool>
+          </property>
+         </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="licenseTab">
+      <attribute name="title">
+       <string>&amp;License</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="licenseTabLayout">
+       <item>
+         <widget class="QTextBrowser" name="m_licenseTextEdit">
+          <property name="openExternalLinks">
+           <bool>false</bool>
+          </property>
+         </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="thirdPartyLibsTab">
+      <attribute name="title">
+       <string>&amp;Third-party Libraries</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="thirdPartyLibsTabLayout">
+       <item>
+         <widget class="QTextBrowser" name="m_3rdPartyLibsTextEdit">
+          <property name="openExternalLinks">
+           <bool>true</bool>
+          </property>
+         </widget>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="m_buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Close</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/actionmanager.cpp

@@ -4,19 +4,17 @@
 
 #include "actionmanager.h"
 
+#include "settings.h"
 #include "mainwindow.h"
+#include "playlistmanager.h"
+#include "graphicsview.h"
+#include "graphicsscene.h"
 
 #include <QGuiApplication>
 #include <QSvgRenderer>
 #include <QPainter>
 
-#define ICON_NAME(name)\
-    QStringLiteral(":/icons/" #name ".svg")
-
-#define ACTION_NAME(s) QStringLiteral(STRIFY(s))
-#define STRIFY(s) #s
-
-QIcon ActionManager::loadHidpiIcon(const QString &resp, QSize sz)
+static QIcon loadHidpiIcon(const QString &resp, QSize sz = QSize(32, 32))
 {
     QSvgRenderer r(resp);
     QPixmap pm = QPixmap(sz * qApp->devicePixelRatio());
@@ -29,91 +27,110 @@ QIcon ActionManager::loadHidpiIcon(const QString &resp, QSize sz)
 
 void ActionManager::setupAction(MainWindow *mainWindow)
 {
+    // region: Action and Its Icon Creation
+
+    // Declare some convenient macros and lambdas.
+
+    #define ICON_NAME(name)\
+        QStringLiteral(":/icons/" #name ".svg")
+
+    #define ACTION_NAME(s) QStringLiteral(STRIFY(s))
+    #define STRIFY(s) #s
+
     auto create_action = [] (QWidget *w, QAction **a, QString i, QString an, bool iconFromTheme = false) {
         *a = new QAction(w);
         if (!i.isNull())
-            (*a)->setIcon(iconFromTheme ? QIcon::fromTheme(i) : ActionManager::loadHidpiIcon(i));
+            (*a)->setIcon(iconFromTheme ? QIcon::fromTheme(i) : loadHidpiIcon(i));
         (*a)->setObjectName(an);
         w->addAction(*a);
     };
-    #define CREATE_NEW_ICON_ACTION(w, a, i) create_action(w, &a, ICON_NAME(i), ACTION_NAME(a))
+
+    /// This macro for register normal action.
+    #define CREATE_NEW_ACTION(w, a) create_action(w, &a, QString(), ACTION_NAME(a))
+    /// This macro for register Qt theme action.
+    #define CREATE_NEW_THEMEICON_ACTION(w, a, i) create_action(w, &a, QLatin1String(STRIFY(i)), ACTION_NAME(a), true)
+    /// This macro for register action with our custom icon.
+    #define CREATE_NEW_ICON_ACTION(w, a, i) create_action(w, &a, ICON_NAME(i), ACTION_NAME(a), false)
+
+    // TODO: We may replace all Qt theme icons to our custom icon for visual consistency.
+    // TODO: Some icons are invalid.
+
+    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionCopyPixmap, edit-copy);
+    CREATE_NEW_ACTION(mainWindow, actionCopyFilePath);
+
+    CREATE_NEW_ICON_ACTION(mainWindow, actionPrevPicture, go-previous);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionNextPicture, go-next);
+
     CREATE_NEW_ICON_ACTION(mainWindow, actionActualSize, zoom-original);
-    CREATE_NEW_ICON_ACTION(mainWindow, actionToggleMaximize, view-fullscreen);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionFitToScreen, app-icon);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionFitByWidth, app-icon);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionFitByHeight, app-icon);
     CREATE_NEW_ICON_ACTION(mainWindow, actionZoomIn, zoom-in);
     CREATE_NEW_ICON_ACTION(mainWindow, actionZoomOut, zoom-out);
-    CREATE_NEW_ICON_ACTION(mainWindow, actionToggleCheckerboard, view-background-checkerboard);
+
+    CREATE_NEW_ICON_ACTION(mainWindow, actionFlipHorizontal, app-icon);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionFlipVertical, app-icon);
     CREATE_NEW_ICON_ACTION(mainWindow, actionRotateClockwise, object-rotate-right);
-    #undef CREATE_NEW_ICON_ACTION
-
-    #define CREATE_NEW_ACTION(w, a) create_action(w, &a, QString(), ACTION_NAME(a))
-    #define CREATE_NEW_THEMEICON_ACTION(w, a, i) create_action(w, &a, QLatin1String(STRIFY(i)), ACTION_NAME(a), true)
-    CREATE_NEW_ACTION(mainWindow, actionRotateCounterClockwise);
-    CREATE_NEW_ACTION(mainWindow, actionPrevPicture);
-    CREATE_NEW_ACTION(mainWindow, actionNextPicture);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionRotateCounterClockwise, app-icon);
 
+    CREATE_NEW_ACTION(mainWindow, actionToggleAvoidResetTransform);
+    CREATE_NEW_ICON_ACTION(mainWindow, actionToggleCheckerboard, view-background-checkerboard);
     CREATE_NEW_ACTION(mainWindow, actionTogglePauseAnimation);
     CREATE_NEW_ACTION(mainWindow, actionAnimationNextFrame);
 
-    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionOpen, document-open);
-    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionSaveAs, document-save-as);
-    CREATE_NEW_ACTION(mainWindow, actionHorizontalFlip);
-    CREATE_NEW_ACTION(mainWindow, actionFitInView);
-    CREATE_NEW_ACTION(mainWindow, actionFitByWidth);
-    CREATE_NEW_ACTION(mainWindow, actionFitLongImage);
-    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionCopyPixmap, edit-copy);
-    CREATE_NEW_ACTION(mainWindow, actionCopyFilePath);
-    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionPaste, edit-paste);
     CREATE_NEW_THEMEICON_ACTION(mainWindow, actionTrash, edit-delete);
-    CREATE_NEW_ACTION(mainWindow, actionToggleStayOnTop);
-    CREATE_NEW_ACTION(mainWindow, actionToggleProtectMode);
-    CREATE_NEW_ACTION(mainWindow, actionToggleAvoidResetTransform);
-    CREATE_NEW_ACTION(mainWindow, actionSettings);
-    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionHelp, system-help);
     CREATE_NEW_THEMEICON_ACTION(mainWindow, actionLocateInFileManager, system-file-manager);
     CREATE_NEW_THEMEICON_ACTION(mainWindow, actionProperties, document-properties);
-    CREATE_NEW_ACTION(mainWindow, actionQuitApp);
-    #undef CREATE_NEW_ACTION
+
+    CREATE_NEW_ACTION(mainWindow, actionSettings);
+    CREATE_NEW_THEMEICON_ACTION(mainWindow, actionHelp, system-help);
+
+    // Remove convenient macros
+
+    #undef CREATE_NEW_ICON_ACTION
     #undef CREATE_NEW_THEMEICON_ACTION
+    #undef CREATE_NEW_ACTION
 
-    retranslateUi(mainWindow);
+    #undef STRIFY
+    #undef ACTION_NAME
+    #undef ICON_NAME
 
-    QMetaObject::connectSlotsByName(mainWindow);
-}
+    // endregion
 
-void ActionManager::retranslateUi(MainWindow *mainWindow)
-{
-    Q_UNUSED(mainWindow);
+    // region: Setup Checkable Action
 
-    actionOpen->setText(QCoreApplication::translate("MainWindow", "&Open...", nullptr));
-    actionSaveAs->setText(QCoreApplication::translate("MainWindow", "Save &As...", nullptr));
+    actionToggleAvoidResetTransform->setCheckable(true);
+    actionToggleCheckerboard->setCheckable(true);
+    actionTogglePauseAnimation->setCheckable(true);
 
-    actionActualSize->setText(QCoreApplication::translate("MainWindow", "Actual size", nullptr));
-    actionToggleMaximize->setText(QCoreApplication::translate("MainWindow", "Toggle maximize", nullptr));
-    actionZoomIn->setText(QCoreApplication::translate("MainWindow", "Zoom in", nullptr));
-    actionZoomOut->setText(QCoreApplication::translate("MainWindow", "Zoom out", nullptr));
-    actionToggleCheckerboard->setText(QCoreApplication::translate("MainWindow", "Toggle Checkerboard", nullptr));
-    actionRotateClockwise->setText(QCoreApplication::translate("MainWindow", "Rotate right", nullptr));
-    actionRotateCounterClockwise->setText(QCoreApplication::translate("MainWindow", "Rotate left", nullptr));
+    // endregion
+
+    // region: Action Translatable Text Setup
+
+    actionCopyPixmap->setText(QCoreApplication::translate("MainWindow", "Copy P&ixmap", nullptr));
+    actionCopyFilePath->setText(QCoreApplication::translate("MainWindow", "Copy &File Path", nullptr));
 
     actionPrevPicture->setText(QCoreApplication::translate("MainWindow", "Previous image", nullptr));
     actionNextPicture->setText(QCoreApplication::translate("MainWindow", "Next image", nullptr));
 
+    actionActualSize->setText(QCoreApplication::translate("MainWindow", "Actual size", nullptr));
+    actionFitToScreen->setText(QCoreApplication::translate("MainWindow", "Fit to screen", nullptr));
+    actionFitByWidth->setText(QCoreApplication::translate("MainWindow", "Fit by width", nullptr));
+    actionFitByHeight->setText(QCoreApplication::translate("MainWindow", "Fit by height", nullptr));
+    actionZoomIn->setText(QCoreApplication::translate("MainWindow", "Zoom in", nullptr));
+    actionZoomOut->setText(QCoreApplication::translate("MainWindow", "Zoom out", nullptr));
+
+    actionFlipHorizontal->setText(QCoreApplication::translate("MainWindow", "Flip &Horizontally", nullptr));
+    actionFlipVertical->setText(QCoreApplication::translate("MainWindow", "Flip &Vertically", nullptr));
+    actionRotateClockwise->setText(QCoreApplication::translate("MainWindow", "Rotate right", nullptr));
+    actionRotateCounterClockwise->setText(QCoreApplication::translate("MainWindow", "Rotate left", nullptr));
+
+    actionToggleAvoidResetTransform->setText(QCoreApplication::translate("MainWindow", "Keep transformation", "The 'transformation' means the flip/rotation status that currently applied to the image view"));
+    actionToggleCheckerboard->setText(QCoreApplication::translate("MainWindow", "Toggle Checkerboard", nullptr));
     actionTogglePauseAnimation->setText(QCoreApplication::translate("MainWindow", "Pause/Resume Animation", nullptr));
     actionAnimationNextFrame->setText(QCoreApplication::translate("MainWindow", "Animation Go to Next Frame", nullptr));
 
-    actionHorizontalFlip->setText(QCoreApplication::translate("MainWindow", "Flip &Horizontally", nullptr));
-    actionFitInView->setText(QCoreApplication::translate("MainWindow", "Fit to view", nullptr));
-    actionFitByWidth->setText(QCoreApplication::translate("MainWindow", "Fit to width", nullptr));
-    actionFitLongImage->setText(QCoreApplication::translate("MainWindow", "Fit long image", nullptr));
-    actionCopyPixmap->setText(QCoreApplication::translate("MainWindow", "Copy P&ixmap", nullptr));
-    actionCopyFilePath->setText(QCoreApplication::translate("MainWindow", "Copy &File Path", nullptr));
-    actionPaste->setText(QCoreApplication::translate("MainWindow", "&Paste", nullptr));
     actionTrash->setText(QCoreApplication::translate("MainWindow", "Move to Trash", nullptr));
-    actionToggleStayOnTop->setText(QCoreApplication::translate("MainWindow", "Stay on top", nullptr));
-    actionToggleProtectMode->setText(QCoreApplication::translate("MainWindow", "Protected mode", nullptr));
-    actionToggleAvoidResetTransform->setText(QCoreApplication::translate("MainWindow", "Keep transformation", "The 'transformation' means the flip/rotation status that currently applied to the image view"));
-    actionSettings->setText(QCoreApplication::translate("MainWindow", "Configure...", nullptr));
-    actionHelp->setText(QCoreApplication::translate("MainWindow", "Help", nullptr));
 #ifdef Q_OS_WIN
     actionLocateInFileManager->setText(
         QCoreApplication::translate(
@@ -125,34 +142,67 @@ void ActionManager::retranslateUi(MainWindow *mainWindow)
     actionLocateInFileManager->setText(QCoreApplication::translate("MainWindow", "Show in directory", nullptr));
 #endif // Q_OS_WIN
     actionProperties->setText(QCoreApplication::translate("MainWindow", "Properties", nullptr));
-    actionQuitApp->setText(QCoreApplication::translate("MainWindow", "Quit", nullptr));
+
+    actionSettings->setText(QCoreApplication::translate("MainWindow", "Configure...", nullptr));
+    actionHelp->setText(QCoreApplication::translate("MainWindow", "Help", nullptr));
+    // endregion
+
+    QMetaObject::connectSlotsByName(mainWindow);
 }
 
 void ActionManager::setupShortcuts()
 {
-    actionOpen->setShortcut(QKeySequence::Open);
-    actionSaveAs->setShortcut(QKeySequence::SaveAs);
+    actionCopyPixmap->setShortcut(QKeySequence::Copy);
+
+    actionPrevPicture->setShortcuts({
+        QKeySequence(Qt::Key_Left),
+        QKeySequence(Qt::Key_PageUp),
+    });
+    actionNextPicture->setShortcuts({
+        QKeySequence(Qt::Key_Right),
+        QKeySequence(Qt::Key_PageDown),
+    });
+
     actionActualSize->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_0));
     actionZoomIn->setShortcut(QKeySequence::ZoomIn);
     actionZoomOut->setShortcut(QKeySequence::ZoomOut);
-    actionPrevPicture->setShortcuts({
-        QKeySequence(Qt::Key_PageUp),
-        QKeySequence(Qt::Key_Left),
-    });
-    actionNextPicture->setShortcuts({
-        QKeySequence(Qt::Key_PageDown),
-        QKeySequence(Qt::Key_Right),
-    });
-    actionHorizontalFlip->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_R));
-    actionCopyPixmap->setShortcut(QKeySequence::Copy);
-    actionPaste->setShortcut(QKeySequence::Paste);
+
     actionTrash->setShortcut(QKeySequence::Delete);
-    actionHelp->setShortcut(QKeySequence::HelpContents);
-    actionSettings->setShortcut(QKeySequence::Preferences);
     actionProperties->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_I));
-    actionQuitApp->setShortcuts({
-        QKeySequence(Qt::Key_Space),
-        QKeySequence(Qt::Key_Escape)
-    });
+
+    actionSettings->setShortcut(QKeySequence::Preferences);
+    actionHelp->setShortcut(QKeySequence::HelpContents);
+}
+
+void ActionManager::updateActionState(PlaylistManager* pm, GraphicsView* gv)
+{
+    const auto* gs = gv->scene();
+    const auto* settings = Settings::instance();
+
+    // Update Prev/Next Picture State
+    const int galleryFileCount = pm->totalCount();
+    const bool loopGallery = settings->loopGallery();
+    actionPrevPicture->setEnabled(galleryFileCount > 1 && (loopGallery || !pm->isFirstIndex()));
+    actionNextPicture->setEnabled(galleryFileCount > 1 && (loopGallery || !pm->isLastIndex()));
+
+    // Update Avoid Reset Transform
+    actionToggleAvoidResetTransform->setCheckable(gv->avoidResetTransform());
+
+    // Update Checkerboard
+    actionToggleCheckerboard->setChecked(gv->checkerboard());
+
+    // Update Animation Graphics Action
+    bool canPauseAnimation = gs->canPauseAnimation();
+    actionTogglePauseAnimation->setEnabled(canPauseAnimation);
+    if (canPauseAnimation) {
+        actionTogglePauseAnimation->setChecked(gs->isPauseAnimation());
+    } else {
+        actionTogglePauseAnimation->setChecked(false);
+    }
+    bool canSkipAnimation = gs->canSkipAnimationFrame();
+    actionAnimationNextFrame->setEnabled(canSkipAnimation);
+
+    // TODO: Add more...
+
 }
 

app/actionmanager.h

@@ -8,7 +8,11 @@
 #include <QAction>
 
 class MainWindow;
+class PlaylistManager;
+class GraphicsView;
 
+/// Action Manager is separated from Main Window
+/// to manage all actions specifically.
 class ActionManager
 {
 public:
@@ -16,45 +20,41 @@ public:
     ~ActionManager() = default;
 
     void setupAction(MainWindow * mainWindow);
-    void retranslateUi(MainWindow *MainWindow);
     void setupShortcuts();
 
-    static QIcon loadHidpiIcon(const QString &resp, QSize sz = QSize(32, 32));
+public slots:
+    void updateActionState(PlaylistManager* pm, GraphicsView* gv);
 
 public:
-    QAction *actionOpen;
-    QAction *actionSaveAs;
-
-    QAction *actionActualSize;
-    QAction *actionToggleMaximize;
-    QAction *actionZoomIn;
-    QAction *actionZoomOut;
-    QAction *actionToggleCheckerboard;
-    QAction *actionRotateClockwise;
-    QAction *actionRotateCounterClockwise;
+    QAction *actionCopyPixmap;
+    QAction *actionCopyFilePath;
 
     QAction *actionPrevPicture;
     QAction *actionNextPicture;
 
+    QAction *actionActualSize;
+    QAction *actionFitToScreen;
+    QAction *actionFitByWidth;
+    QAction *actionFitByHeight;
+    QAction *actionZoomIn;
+    QAction *actionZoomOut;
+
+    QAction *actionFlipHorizontal;
+    QAction *actionFlipVertical;
+    QAction *actionRotateClockwise;
+    QAction *actionRotateCounterClockwise;
+
+    QAction *actionToggleAvoidResetTransform;
+    QAction *actionToggleCheckerboard;
     QAction *actionTogglePauseAnimation;
     QAction *actionAnimationNextFrame;
 
-    QAction *actionHorizontalFlip;
-    QAction *actionFitInView;
-    QAction *actionFitByWidth;
-    QAction *actionFitLongImage;
-    QAction *actionCopyPixmap;
-    QAction *actionCopyFilePath;
-    QAction *actionPaste;
     QAction *actionTrash;
-    QAction *actionToggleStayOnTop;
-    QAction *actionToggleProtectMode;
-    QAction *actionToggleAvoidResetTransform;
-    QAction *actionSettings;
-    QAction *actionHelp;
     QAction *actionLocateInFileManager;
     QAction *actionProperties;
-    QAction *actionQuitApp;
+
+    QAction *actionSettings;
+    QAction *actionHelp;
 };
 
 #endif // ACTIONMANAGER_H

app/bottombuttongroup.cpp

@@ -4,54 +4,36 @@
 
 #include "bottombuttongroup.h"
 
-#include "opacityhelper.h"
-
 #include <QToolButton>
 #include <QVBoxLayout>
 #include <QDebug>
 
 BottomButtonGroup::BottomButtonGroup(const std::vector<QAction *> &actionList, QWidget *parent)
     : QGroupBox (parent)
-    , m_opacityHelper(new OpacityHelper(this))
 {
     QHBoxLayout * mainLayout = new QHBoxLayout(this);
     mainLayout->setSizeConstraint(QLayout::SetFixedSize);
     this->setLayout(mainLayout);
     this->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
-    this->setStyleSheet("BottomButtonGroup {"
-                        "border: 1px solid gray;"
-                        "border-top-left-radius: 10px;"
-                        "border-top-right-radius: 10px;"
-                        "border-style: none;"
-                        "background-color:rgba(0,0,0,120)"
-                        "}"
-                        "QToolButton {"
-                        "background:transparent;"
-                        "}"
-                        "QToolButton:!focus {"
-                        "border-style: none;"
-                        "}");
+    this->setStyleSheet(R"#(
+BottomButtonGroup {
+    border-style: none;
+    background: transparent;
+}
+QToolButton {
+    background: transparent;
+    border-style: none;
+}
+)#");
 
-    auto newActionBtn = [this](QAction * action) -> QToolButton * {
+    for (QAction * action : actionList) {
+        // Create button
         QToolButton * btn = new QToolButton(this);
         btn->setDefaultAction(action);
         btn->setIconSize(QSize(32, 32));
         btn->setFixedSize(40, 40);
-        return btn;
-    };
-
-    for (QAction * action : actionList) {
-        addButton(newActionBtn(action));
+        // Add button
+        layout()->addWidget(btn);
     }
-}
-
-void BottomButtonGroup::setOpacity(qreal opacity, bool animated)
-{
-    m_opacityHelper->setOpacity(opacity, animated);
-}
-
-void BottomButtonGroup::addButton(QAbstractButton *button)
-{
-    layout()->addWidget(button);
     updateGeometry();
 }

app/bottombuttongroup.h

@@ -10,18 +10,11 @@
 #include <QAbstractButton>
 #include <QGroupBox>
 
-class OpacityHelper;
 class BottomButtonGroup : public QGroupBox
 {
     Q_OBJECT
 public:
     explicit BottomButtonGroup(const std::vector<QAction *> & actionList, QWidget *parent = nullptr);
-
-    void setOpacity(qreal opacity, bool animated = true);
-    void addButton(QAbstractButton *button);
-
-private:
-    OpacityHelper * m_opacityHelper;
 };
 
 #endif // BOTTOMBUTTONGROUP_H

app/framelesswindow.cpp

@@ -14,15 +14,14 @@
 FramelessWindow::FramelessWindow(QWidget *parent)
     : QWidget(parent)
     , m_centralLayout(new QVBoxLayout(this))
-    , m_oldCursorShape(Qt::ArrowCursor)
-    , m_oldEdges()
 {
-    this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowMinMaxButtonsHint);
-    this->setMouseTracking(true);
-    this->setAttribute(Qt::WA_Hover, true);
-    this->installEventFilter(this);
+    this->setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
 
-    m_centralLayout->setContentsMargins(QMargins());
+    // YYC MARK:
+    // 72 px is the height of Windows Photo Viewer's bottom line.
+
+    // TODO: This value may be declared as a constant.
+    m_centralLayout->setContentsMargins(QMargins(0, 0, 0, 72));
 }
 
 void FramelessWindow::setCentralWidget(QWidget *widget)
@@ -35,102 +34,3 @@ void FramelessWindow::setCentralWidget(QWidget *widget)
     m_centralLayout->addWidget(widget);
     m_centralWidget = widget;
 }
-
-void FramelessWindow::installResizeCapture(QObject* widget)
-{
-    widget->installEventFilter(this);
-}
-
-bool FramelessWindow::eventFilter(QObject* o, QEvent* e)
-{
-    switch (e->type()) {
-    case QEvent::HoverMove:
-    {
-        QWidget* wg = qobject_cast<QWidget*>(o);
-        if (wg != nullptr)
-            return mouseHover(static_cast<QHoverEvent*>(e), wg);
-
-        break;
-    }
-    case QEvent::MouseButtonPress:
-        return mousePress(static_cast<QMouseEvent*>(e));
-    }
-
-    return QWidget::eventFilter(o, e);
-}
-
-bool FramelessWindow::mouseHover(QHoverEvent* event, QWidget* wg)
-{
-    if (!isMaximized() && !isFullScreen()) {
-        QWindow* win = window()->windowHandle();
-        Qt::Edges edges = this->getEdgesByPos(wg->mapToGlobal(event->oldPos()), win->frameGeometry());
-
-        // backup & restore cursor shape
-        if (edges && !m_oldEdges)
-            // entering the edge. backup cursor shape
-            m_oldCursorShape = win->cursor().shape();
-        if (!edges && m_oldEdges)
-            // leaving the edge. restore cursor shape
-            win->setCursor(m_oldCursorShape);
-
-        // save the latest edges status
-        m_oldEdges = edges;
-
-        // show resize cursor shape if cursor is within border
-        if (edges) {
-            win->setCursor(this->getCursorByEdge(edges, Qt::ArrowCursor));
-            return true;
-        }
-    }
-
-    return false;
-}
-
-bool FramelessWindow::mousePress(QMouseEvent* event)
-{
-    if (event->buttons() & Qt::LeftButton && !isMaximized() && !isFullScreen()) {
-        QWindow* win = window()->windowHandle();
-        Qt::Edges edges = this->getEdgesByPos(event->globalPosition().toPoint(), win->frameGeometry());
-        if (edges) {
-            win->startSystemResize(edges);
-            return true;
-        }
-    }
-
-    return false;
-}
-
-Qt::CursorShape FramelessWindow::getCursorByEdge(const Qt::Edges& edges, Qt::CursorShape default_cursor)
-{
-    if ((edges == (Qt::TopEdge | Qt::LeftEdge)) || (edges == (Qt::RightEdge | Qt::BottomEdge)))
-        return Qt::SizeFDiagCursor;
-    else if ((edges == (Qt::TopEdge | Qt::RightEdge)) || (edges == (Qt::LeftEdge | Qt::BottomEdge)))
-        return Qt::SizeBDiagCursor;
-    else if (edges & (Qt::TopEdge | Qt::BottomEdge))
-        return Qt::SizeVerCursor;
-    else if (edges & (Qt::LeftEdge | Qt::RightEdge))
-        return Qt::SizeHorCursor;
-    else
-        return default_cursor;
-}
-
-Qt::Edges FramelessWindow::getEdgesByPos(const QPoint gpos, const QRect& winrect)
-{
-    const int borderWidth = 8;
-    Qt::Edges edges;
-
-    int x = gpos.x() - winrect.x();
-    int y = gpos.y() - winrect.y();
-
-    if (x < borderWidth)
-        edges |= Qt::LeftEdge;
-    if (x > (winrect.width() - borderWidth))
-        edges |= Qt::RightEdge;
-    if (y < borderWidth)
-        edges |= Qt::TopEdge;
-    if (y > (winrect.height() - borderWidth))
-        edges |= Qt::BottomEdge;
-
-    return edges;
-}
-

app/framelesswindow.h

@@ -18,20 +18,8 @@ public:
     explicit FramelessWindow(QWidget *parent = nullptr);
 
     void setCentralWidget(QWidget * widget);
-    void installResizeCapture(QObject* widget);
-
-protected:
-    bool eventFilter(QObject *o, QEvent *e) override;
-    bool mouseHover(QHoverEvent* event, QWidget* wg);
-    bool mousePress(QMouseEvent* event);
 
 private:
-    Qt::Edges m_oldEdges;
-    Qt::CursorShape m_oldCursorShape;
-
-    Qt::CursorShape getCursorByEdge(const Qt::Edges& edges, Qt::CursorShape default_cursor);
-    Qt::Edges getEdgesByPos(const QPoint pos, const QRect& winrect);
-
     QVBoxLayout * m_centralLayout = nullptr;
     QWidget * m_centralWidget = nullptr; // just a pointer, doesn't take the ownership.
 };

app/graphicsscene.cpp

@@ -6,6 +6,9 @@
 
 #include "settings.h"
 
+#include <QStyleHints>
+#include <QOperatingSystemVersion>
+#include <QGuiApplication>
 #include <QGraphicsSceneMouseEvent>
 #include <QMimeData>
 #include <QDebug>
@@ -16,6 +19,33 @@
 #include <QMovie>
 #include <QPainter>
 
+static const QColor& ColorSchemaToTextForeground(Qt::ColorScheme colorScheme) {
+    // YYC MARK:
+    // If we are using Windows 10 and lower system or Qt which do not support "Windows 11"
+    // theme (lower than Qt 6.7), we should only support light mode.
+    // Because Qt's dark-mode-aware "Windows 11" theme is only well-supported on Windows 11.
+#if defined(Q_OS_WIN)
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+    colorScheme = Qt::ColorScheme::Light;
+#else
+    if (QOperatingSystemVersion::current() < QOperatingSystemVersion::Windows11) {
+        colorScheme = Qt::ColorScheme::Light;
+    }
+#endif // QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+#endif // defined(Q_OS_WIN)
+
+    switch (colorScheme) {
+    case Qt::ColorScheme::Dark:
+        static QColor WHITE = QColor("White");
+        return WHITE;
+    case Qt::ColorScheme::Light:
+    case Qt::ColorScheme::Unknown:
+    default:
+        static QColor BLACK = QColor("Black");
+        return BLACK;
+    }
+}
+
 class PGraphicsPixmapItem : public QGraphicsPixmapItem
 {
 public:
@@ -100,6 +130,7 @@ GraphicsScene::GraphicsScene(QObject *parent)
     : QGraphicsScene(parent)
 {
     showText(tr("Drag image here"));
+    connect(qGuiApp->styleHints(), &QStyleHints::colorSchemeChanged, this, &GraphicsScene::updateStyle);
 }
 
 GraphicsScene::~GraphicsScene()
@@ -121,7 +152,7 @@ void GraphicsScene::showText(const QString &text)
 {
     this->clear();
     QGraphicsTextItem * textItem = this->addText(text);
-    textItem->setDefaultTextColor(QColor("White"));
+    textItem->setDefaultTextColor(ColorSchemaToTextForeground(qGuiApp->styleHints()->colorScheme()));
     m_theThing = textItem;
     this->setSceneRect(m_theThing->boundingRect());
 }
@@ -169,28 +200,58 @@ bool GraphicsScene::trySetTransformationMode(Qt::TransformationMode mode, float
     return false;
 }
 
+/// Fetch graphics item as our custom animated item.
+/// Return nullptr means this item is not animated item.
+static PGraphicsMovieItem* fetchAnimatedItem(QGraphicsItem *item) {
+    return qgraphicsitem_cast<PGraphicsMovieItem *>(item);
+}
+
+bool GraphicsScene::canPauseAnimation() const {
+    return fetchAnimatedItem(m_theThing) != nullptr;
+}
+
+bool GraphicsScene::isPauseAnimation() const {
+    auto* animatedItem = fetchAnimatedItem(m_theThing);
+    if (animatedItem != nullptr) {
+        return animatedItem->movie()->state() == QMovie::Paused;
+    } else {
+        return false;
+    }
+}
+
 bool GraphicsScene::togglePauseAnimation()
 {
-    PGraphicsMovieItem * animatedItem = qgraphicsitem_cast<PGraphicsMovieItem *>(m_theThing);
-    if (animatedItem) {
+    auto* animatedItem = fetchAnimatedItem(m_theThing);
+    if (animatedItem != nullptr) {
         animatedItem->movie()->setPaused(animatedItem->movie()->state() != QMovie::Paused);
         return true;
-    }
+    } else {
         return false;
     }
+}
+
+bool GraphicsScene::canSkipAnimationFrame() const {
+    return isPauseAnimation();
+}
 
 bool GraphicsScene::skipAnimationFrame(int delta)
 {
-    PGraphicsMovieItem * animatedItem = qgraphicsitem_cast<PGraphicsMovieItem *>(m_theThing);
-    if (animatedItem) {
+    auto* animatedItem = fetchAnimatedItem(m_theThing);
+
+    // Only paused animated item can skip frame
+    if (animatedItem == nullptr) {
+        return false;
+    }
+    if (animatedItem->movie()->state() != QMovie::Paused) {
+        return false;
+    }
+
+    // Perform skip
     const int frameCount = animatedItem->movie()->frameCount();
     const int currentFrame = animatedItem->movie()->currentFrameNumber();
     const int targetFrame = (currentFrame + delta) % frameCount;
-        animatedItem->movie()->setPaused(true);
     return animatedItem->movie()->jumpToFrame(targetFrame);
 }
-    return false;
-}
 
 QPixmap GraphicsScene::renderToPixmap()
 {
@@ -206,3 +267,14 @@ QPixmap GraphicsScene::renderToPixmap()
 
     return pixmap;
 }
+
+void GraphicsScene::updateStyle(Qt::ColorScheme colorScheme) {
+    Q_UNUSED(colorScheme)
+
+    QGraphicsItem * item = this->m_theThing;
+    if (item == nullptr) return;
+    QGraphicsTextItem * textItem = qgraphicsitem_cast<QGraphicsTextItem*>(item);
+    if (textItem == nullptr) return;
+
+    textItem->setDefaultTextColor(ColorSchemaToTextForeground(colorScheme));
+}

app/graphicsscene.h

@@ -21,11 +21,26 @@ public:
 
     bool trySetTransformationMode(Qt::TransformationMode mode, float scaleHint);
 
+    /// Check whether current thing is animation.
+    /// Only animation thing can be paused.
+    bool canPauseAnimation() const;
+    /// Check whether we are pasuing an animation graphics.
+    bool isPauseAnimation() const;
+    /// Toggle animation graphics pause state.
+    /// Return true for successfully toggle, otherwise false.
     bool togglePauseAnimation();
+    /// Check whether we can skip animation frame.
+    /// Only paused animation graphics can skip frame.
+    bool canSkipAnimationFrame() const;
+    /// Skip paused animation graphics with given frame.
+    /// Return true for successfully skip, otherwise false.
     bool skipAnimationFrame(int delta = 1);
 
     QPixmap renderToPixmap();
 
+public slots:
+    void updateStyle(Qt::ColorScheme colorScheme);
+
 private:
     QGraphicsItem * m_theThing = nullptr;
 };

app/graphicsview.cpp

@@ -7,6 +7,8 @@
 #include "graphicsscene.h"
 #include "settings.h"
 
+#include <QStyleHints>
+#include <QOperatingSystemVersion>
 #include <QDebug>
 #include <QColorSpace>
 #include <QMouseEvent>
@@ -23,11 +25,12 @@ GraphicsView::GraphicsView(QWidget *parent)
     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     setResizeAnchor(QGraphicsView::AnchorUnderMouse);
     setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
-    setStyleSheet("background-color: rgba(0, 0, 0, 220);"
-                  "border-radius: 3px;");
     setAcceptDrops(false);
     setCheckerboardEnabled(false);
 
+    updateStyle(qGuiApp->styleHints()->colorScheme());
+    connect(qGuiApp->styleHints(), &QStyleHints::colorSchemeChanged, this, &GraphicsView::updateStyle);
+
     connect(horizontalScrollBar(), &QScrollBar::valueChanged, this, &GraphicsView::viewportRectChanged);
     connect(verticalScrollBar(), &QScrollBar::valueChanged, this, &GraphicsView::viewportRectChanged);
 }
@@ -137,8 +140,7 @@ void GraphicsView::resetTransform()
 
 void GraphicsView::zoomView(qreal scaleFactor)
 {
-    m_enableFitInView = false;
-    m_longImageMode = false;
+    m_enableFitToScreen = false;
     scale(scaleFactor, scaleFactor);
     applyTransformationModeByScaleFactor();
     emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
@@ -222,6 +224,8 @@ void GraphicsView::fitByOrientation(Qt::Orientation ori, bool scaleDownOnly)
     QRectF originalScene = sceneRect();
     QTransform currentTransform = transform();
     
+    // TODO: May be optimized by matrix arithmetic operation?
+
     if (ori == Qt::Horizontal) {
         // For horizontal fit (fit by width), position at top (for tall images)
         // Find the scene point that corresponds to the top-center of the transformed image
@@ -274,37 +278,12 @@ void GraphicsView::fitByOrientation(Qt::Orientation ori, bool scaleDownOnly)
         centerOn(sceneLeftCenter);
     }
 
-    m_enableFitInView = false;
+    m_enableFitToScreen = false;
 
     applyTransformationModeByScaleFactor();
     emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
 }
 
-bool GraphicsView::isLongImage() const
-{
-    // Get the transformed image size (considering rotation and other transforms)
-    QRectF transformedRect = transform().mapRect(sceneRect());
-    QSizeF imageSize = transformedRect.size();
-    
-    if (imageSize.isEmpty()) return false;
-    
-    qreal aspectRatio = imageSize.width() / imageSize.height();
-    
-    // Check if aspect ratio exceeds 5:2 (wide) or 2:5 (tall)
-    return aspectRatio > 2.5 || aspectRatio < 0.4;
-}
-
-void GraphicsView::fitLongImage()
-{
-    QRectF transformedRect = transform().mapRect(sceneRect());
-
-    if (transformedRect.width() < transformedRect.height()) {
-        fitByOrientation(Qt::Horizontal, true);
-    } else {
-        fitByOrientation(Qt::Vertical, true);
-    }
-}
-
 void GraphicsView::displayScene()
 {
     if (shouldAvoidTransform()) {
@@ -312,14 +291,6 @@ void GraphicsView::displayScene()
         return;
     }
 
-    // Check if should apply long image mode
-    if (Settings::instance()->autoLongImageMode() && isLongImage()) {
-        m_longImageMode = true;
-        m_firstUserMediaLoaded = true;
-        if (isSceneBiggerThanView()) fitLongImage();
-        return;
-    }
-
     if (isSceneBiggerThanView()) {
         // Do fit-in-view
         fitInView(sceneRect(), Qt::KeepAspectRatio);
@@ -330,8 +301,7 @@ void GraphicsView::displayScene()
         emit navigatorViewRequired(false, transform());
     }
 
-    m_longImageMode = false;
-    m_enableFitInView = true;
+    m_enableFitToScreen = true;
     m_firstUserMediaLoaded = true;
 }
 
@@ -345,14 +315,9 @@ bool GraphicsView::isSceneBiggerThanView() const
 }
 
 // Automately do fit in view when viewport(window) smaller than image original size.
-void GraphicsView::setEnableAutoFitInView(bool enable)
+void GraphicsView::setEnableAutoFitToScreen(bool enable)
 {
-    m_enableFitInView = enable;
-}
-
-void GraphicsView::setLongImageMode(bool enable)
-{
-    m_longImageMode = enable;
+    m_enableFitToScreen = enable;
 }
 
 bool GraphicsView::avoidResetTransform() const
@@ -365,6 +330,15 @@ void GraphicsView::setAvoidResetTransform(bool avoidReset)
     m_avoidResetTransform = avoidReset;
 }
 
+bool GraphicsView::checkerboard() const {
+    return m_checkerboardEnabled;
+}
+
+void GraphicsView::toggleCheckerboard(bool invertCheckerboardColor)
+{
+    setCheckerboardEnabled(!m_checkerboardEnabled, invertCheckerboardColor);
+}
+
 inline double zeroOrOne(double number)
 {
     return qFuzzyIsNull(number) ? 0 : (number > 0 ? 1 : -1);
@@ -379,9 +353,37 @@ QTransform GraphicsView::resetScale(const QTransform & orig)
                       orig.dx(),             orig.dy());
 }
 
-void GraphicsView::toggleCheckerboard(bool invertCheckerboardColor)
-{
-    setCheckerboardEnabled(!m_checkerboardEnabled, invertCheckerboardColor);
+void GraphicsView::updateStyle(Qt::ColorScheme colorScheme) {
+    // YYC MARK:
+    // If we are using Windows 10 and lower system or Qt which do not support "Windows 11"
+    // theme (lower than Qt 6.7), we should only support light mode.
+    // Because Qt's dark-mode-aware "Windows 11" theme is only well-supported on Windows 11.
+#if defined(Q_OS_WIN)
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+    colorScheme = Qt::ColorScheme::Light;
+#else
+    if (QOperatingSystemVersion::current() < QOperatingSystemVersion::Windows11) {
+        colorScheme = Qt::ColorScheme::Light;
+    }
+#endif // QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+#endif // defined(Q_OS_WIN)
+
+    switch (colorScheme) {
+    case Qt::ColorScheme::Dark:
+        setStyleSheet(R"#(
+border-style: none;
+background-color: black;
+)#");
+        break;
+    case Qt::ColorScheme::Light:
+    case Qt::ColorScheme::Unknown:
+    default:
+        setStyleSheet(R"#(
+border-style: none;
+background-color: white;
+)#");
+        break;
+    }
 }
 
 void GraphicsView::mousePressEvent(QMouseEvent *event)
@@ -427,16 +429,11 @@ void GraphicsView::wheelEvent(QWheelEvent *event)
 
 void GraphicsView::resizeEvent(QResizeEvent *event)
 {
-    if (m_longImageMode) {
-        // In long image mode, reapply long image logic on resize
-        // We directly apply the long image mode logic without rechecking
-        // if we should enter long image mode, as the mode is already active
-        fitLongImage();
-    } else if (m_enableFitInView) {
+    if (m_enableFitToScreen) {
         bool originalSizeSmallerThanWindow = isThingSmallerThanWindowWith(resetScale(transform()));
         if (originalSizeSmallerThanWindow && scaleFactor() >= 1) {
             // no longer need to do fitInView()
-            // but we leave the m_enableFitInView value unchanged in case
+            // but we leave the m_enableToScreen value unchanged in case
             // user resize down the window again.
         } else if (originalSizeSmallerThanWindow && scaleFactor() < 1) {
             resetScale();

app/graphicsview.h

@@ -38,24 +38,22 @@ public:
 
     void displayScene();
     bool isSceneBiggerThanView() const;
-    void setEnableAutoFitInView(bool enable = true);
-    void setLongImageMode(bool enable = true);
+    void setEnableAutoFitToScreen(bool enable = true);
 
     bool avoidResetTransform() const;
     void setAvoidResetTransform(bool avoidReset);
 
-    static QTransform resetScale(const QTransform & orig);
+    bool checkerboard() const;
+    void toggleCheckerboard(bool invertCheckerboardColor = false);
 
-    // Long image mode support
-    bool isLongImage() const;
-    void fitLongImage();
+    static QTransform resetScale(const QTransform & orig);
 
 signals:
     void navigatorViewRequired(bool required, QTransform transform);
     void viewportRectChanged();
 
 public slots:
-    void toggleCheckerboard(bool invertCheckerboardColor = false);
+    void updateStyle(Qt::ColorScheme colorScheme);
 
 private:
     void mousePressEvent(QMouseEvent * event) override;
@@ -74,8 +72,7 @@ private:
     // Consider switch to 3 state for "no fit", "always fit" and "fit when view is smaller"?
     // ... or even more? e.g. "fit/snap width" things...
     // Currently it's "no fit" when it's false and "fit when view is smaller" when it's true.
-    bool m_enableFitInView = false;
-    bool m_longImageMode = false;
+    bool m_enableFitToScreen = false;
     bool m_avoidResetTransform = false;
     bool m_checkerboardEnabled = false;
     bool m_useLightCheckerboard = false;

app/mainwindow.cpp

@@ -5,7 +5,6 @@
 #include "mainwindow.h"
 
 #include "settings.h"
-#include "toolbutton.h"
 #include "bottombuttongroup.h"
 #include "graphicsview.h"
 #include "navigatorview.h"
@@ -38,7 +37,6 @@
 #include <QProcess>
 #include <QDesktopServices>
 #include <QMessageBox>
-#include <QImageWriter>
 
 #ifdef HAVE_QTDBUS
 #include <QDBusInterface>
@@ -53,93 +51,59 @@ MainWindow::MainWindow(QWidget *parent)
     , m_pm(new PlaylistManager(this))
     , m_fileSystemWatcher(new QFileSystemWatcher(this))
 {
-    if (Settings::instance()->stayOnTop()) {
-        this->setWindowFlag(Qt::WindowStaysOnTopHint);
-    }
-
-    this->setAttribute(Qt::WA_TranslucentBackground, true);
-    this->setMinimumSize(350, 330);
+    // YYC MARK:
+    // Blumis set original value is 350 x 330.
+    // It is too small for modern device,
+    // so I level it up to standard VGA resolution 640 x 480.
+    this->setMinimumSize(640, 480);
     this->setWindowIcon(QIcon(u":/icons/app-icon.svg"_s));
-    this->setMouseTracking(true);
     this->setAcceptDrops(true);
 
     m_pm->setAutoLoadFilterSuffixes(supportedImageFormats());
 
-    m_fadeOutAnimation = new QPropertyAnimation(this, "windowOpacity"_ba);
-    m_fadeOutAnimation->setDuration(300);
-    m_fadeOutAnimation->setStartValue(1);
-    m_fadeOutAnimation->setEndValue(0);
-    m_floatUpAnimation = new QPropertyAnimation(this, "geometry"_ba);
-    m_floatUpAnimation->setDuration(300);
-    m_floatUpAnimation->setEasingCurve(QEasingCurve::OutCirc);
-    m_exitAnimationGroup = new QParallelAnimationGroup(this);
-    m_exitAnimationGroup->addAnimation(m_fadeOutAnimation);
-    m_exitAnimationGroup->addAnimation(m_floatUpAnimation);
-    connect(m_exitAnimationGroup, &QParallelAnimationGroup::finished,
-            this, &MainWindow::doCloseWindow);
-
     GraphicsScene * scene = new GraphicsScene(this);
 
-    m_graphicsView = new GraphicsView(this);
-    m_graphicsView->setScene(scene);
-    this->setCentralWidget(m_graphicsView);
-
-    m_gv = new NavigatorView(this);
-    m_gv->setFixedSize(220, 160);
+    m_gv = new GraphicsView(this);
     m_gv->setScene(scene);
-    m_gv->setMainView(m_graphicsView);
-    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
+    this->setCentralWidget(m_gv);
 
-    connect(m_graphicsView, &GraphicsView::navigatorViewRequired,
+    m_nav = new NavigatorView(this);
+    // YYC MARK:
+    // Blumia set original value is 220 x 160.
+    // So if we set its height to 72 for respecting the height of Windows Photo Viewer,
+    // the width should be set to 99 for keeping aspect ratio.
+    m_nav->setFixedSize(99, 72);
+    m_nav->setScene(scene);
+    m_nav->setMainView(m_gv);
+    m_nav->fitInView(m_nav->sceneRect(), Qt::KeepAspectRatio);
+
+    connect(m_gv, &GraphicsView::navigatorViewRequired,
             this, [this](bool required, const QTransform & tf){
-        m_gv->setTransform(GraphicsView::resetScale(tf));
-        m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
-        m_gv->setVisible(required);
-        m_gv->updateMainViewportRegion();
+        m_nav->setTransform(GraphicsView::resetScale(tf));
+        m_nav->fitInView(m_nav->sceneRect(), Qt::KeepAspectRatio);
+        m_nav->setVisible(required);
+        m_nav->updateMainViewportRegion();
     });
 
-    connect(m_graphicsView, &GraphicsView::viewportRectChanged,
-            m_gv, &NavigatorView::updateMainViewportRegion);
-
-    m_closeButton = new ToolButton(true, m_graphicsView);
-    m_closeButton->setIconSize(QSize(32, 32));
-    m_closeButton->setFixedSize(QSize(50, 50));
-    m_closeButton->setIconResourcePath(":/icons/window-close.svg");
-
-    connect(m_closeButton, &QAbstractButton::clicked,
-            this, &MainWindow::closeWindow);
-
-    m_prevButton = new ToolButton(false, m_graphicsView);
-    m_prevButton->setIconSize(QSize(75, 75));
-    m_prevButton->setIconResourcePath(":/icons/go-previous.svg");
-    m_prevButton->setVisible(false);
-    m_prevButton->setOpacity(0, false);
-    m_nextButton = new ToolButton(false, m_graphicsView);
-    m_nextButton->setIconSize(QSize(75, 75));
-    m_nextButton->setIconResourcePath(":/icons/go-next.svg");
-    m_nextButton->setVisible(false);
-    m_nextButton->setOpacity(0, false);
-
-    connect(m_prevButton, &QAbstractButton::clicked,
-            this, &MainWindow::galleryPrev);
-    connect(m_nextButton, &QAbstractButton::clicked,
-            this, &MainWindow::galleryNext);
+    connect(m_gv, &GraphicsView::viewportRectChanged,
+            m_nav, &NavigatorView::updateMainViewportRegion);
 
     m_am->setupAction(this);
 
     m_bottomButtonGroup = new BottomButtonGroup({
         m_am->actionActualSize,
-        m_am->actionToggleMaximize,
+        m_am->actionFitToScreen,
         m_am->actionZoomIn,
         m_am->actionZoomOut,
+        m_am->actionPrevPicture,
+        m_am->actionProperties,
+        m_am->actionNextPicture,
+        m_am->actionRotateCounterClockwise,
+        m_am->actionRotateClockwise,
+        m_am->actionFlipHorizontal,
         m_am->actionToggleCheckerboard,
-        m_am->actionRotateClockwise
     }, this);
 
-    m_bottomButtonGroup->setOpacity(0, false);
-    m_gv->setOpacity(0, false);
-    m_closeButton->setOpacity(0, false);
-
     connect(m_pm, &PlaylistManager::totalCountChanged, this, &MainWindow::updateGalleryButtonsVisibility);
 
     connect(m_pm->model(), &PlaylistModel::modelReset, this, std::bind(&MainWindow::galleryCurrent, this, false, false));
@@ -157,15 +121,8 @@ MainWindow::MainWindow(QWidget *parent)
 
     QTimer::singleShot(0, this, [this](){
         m_am->setupShortcuts();
-        Settings::instance()->applyUserShortcuts(this);
     });
 
-    // allow some mouse events can go through these widgets for resizing window.
-    installResizeCapture(m_closeButton);
-    installResizeCapture(m_graphicsView);
-    installResizeCapture(m_graphicsView->viewport());
-    installResizeCapture(m_gv);
-    installResizeCapture(m_gv->viewport());
 }
 
 MainWindow::~MainWindow()
@@ -185,15 +142,15 @@ void MainWindow::showUrls(const QList<QUrl> &urls)
                 return;
             }
         }
-        m_graphicsView->showFileFromPath(firstUrl.toLocalFile());
+        m_gv->showFileFromPath(firstUrl.toLocalFile());
         m_pm->loadPlaylist(urls);
     } else {
-        m_graphicsView->showText(tr("File url list is empty"));
+        m_gv->showText(tr("File url list is empty"));
         m_pm->setPlaylist(urls);
         return;
     }
 
-    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
+    m_nav->fitInView(m_nav->sceneRect(), Qt::KeepAspectRatio);
 }
 
 void MainWindow::initWindowSize()
@@ -218,10 +175,10 @@ void MainWindow::adjustWindowSizeBySceneRect()
 {
     if (m_pm->totalCount() < 1) return;
 
-    QSize sceneSize = m_graphicsView->sceneRect().toRect().size();
+    QSize sceneSize = m_gv->sceneRect().toRect().size();
     QSize sceneSizeWithMargins = sceneSize + QSize(130, 125);
 
-    if (m_graphicsView->scaleFactor() < 1 || size().expandedTo(sceneSizeWithMargins) != size()) {
+    if (m_gv->scaleFactor() < 1 || size().expandedTo(sceneSizeWithMargins) != size()) {
         // if it scaled down by the resize policy:
         QSize screenSize = qApp->screenAt(QCursor::pos())->availableSize();
         if (screenSize.expandedTo(sceneSize) == screenSize) {
@@ -235,7 +192,7 @@ void MainWindow::adjustWindowSizeBySceneRect()
             // The old window size may cause fitInView call from resize() and the
             // above resize() call won't reset the scale back to 1:1, so we
             // just call resetScale() here to ensure the thing is no longer scaled.
-            m_graphicsView->resetScale();
+            m_gv->resetScale();
             centerWindow();
         } else {
             // toggle maximum
@@ -263,7 +220,7 @@ void MainWindow::galleryPrev()
     QModelIndex index = m_pm->previousIndex();
     if (index.isValid()) {
         m_pm->setCurrentIndex(index);
-        m_graphicsView->showFileFromPath(m_pm->localFileByIndex(index));
+        m_gv->showFileFromPath(m_pm->localFileByIndex(index));
     }
 }
 
@@ -275,7 +232,7 @@ void MainWindow::galleryNext()
     QModelIndex index = m_pm->nextIndex();
     if (index.isValid()) {
         m_pm->setCurrentIndex(index);
-        m_graphicsView->showFileFromPath(m_pm->localFileByIndex(index));
+        m_gv->showFileFromPath(m_pm->localFileByIndex(index));
     }
 }
 
@@ -286,11 +243,12 @@ void MainWindow::galleryCurrent(bool showLoadImageHintWhenEmpty, bool reloadImag
     bool shouldResetfileWatcher = true;
     if (index.isValid()) {
         const QString & localFilePath(m_pm->localFileByIndex(index));
-        if (reloadImage) m_graphicsView->showFileFromPath(localFilePath);
+        if (reloadImage) m_gv->showFileFromPath(localFilePath);
         shouldResetfileWatcher = !updateFileWatcher(localFilePath);
         setWindowTitle(m_pm->urlByIndex(index).fileName());
     } else if (showLoadImageHintWhenEmpty && m_pm->totalCount() <= 0) {
-        m_graphicsView->showText(QCoreApplication::translate("GraphicsScene", "Drag image here"));
+        m_gv->showText(QCoreApplication::translate("GraphicsScene", "Drag image here"));
+        setWindowTitle(QString());
     }
 
     updateGalleryButtonsVisibility();
@@ -320,69 +278,14 @@ void MainWindow::showEvent(QShowEvent *event)
 
 void MainWindow::enterEvent(QEnterEvent *event)
 {
-    m_bottomButtonGroup->setOpacity(1);
-    m_gv->setOpacity(1);
-
-    m_closeButton->setOpacity(1);
-    m_prevButton->setOpacity(1);
-    m_nextButton->setOpacity(1);
-
     return FramelessWindow::enterEvent(event);
 }
 
 void MainWindow::leaveEvent(QEvent *event)
 {
-    m_bottomButtonGroup->setOpacity(0);
-    m_gv->setOpacity(0);
-
-    m_closeButton->setOpacity(0);
-    m_prevButton->setOpacity(0);
-    m_nextButton->setOpacity(0);
-
     return FramelessWindow::leaveEvent(event);
 }
 
-void MainWindow::mousePressEvent(QMouseEvent *event)
-{
-    if (event->buttons() & Qt::LeftButton && !isMaximized()) {
-        m_clickedOnWindow = true;
-        m_oldMousePos = event->pos();
-//        qDebug() << m_oldMousePos << m_graphicsView->transform().m11()
-//                 << m_graphicsView->transform().m22() << m_graphicsView->matrix().m12();
-        event->accept();
-    }
-
-    return FramelessWindow::mousePressEvent(event);
-}
-
-void MainWindow::mouseMoveEvent(QMouseEvent *event)
-{
-    if (event->buttons() & Qt::LeftButton && m_clickedOnWindow && !isMaximized() && !isFullScreen()) {
-        if (!window()->windowHandle()->startSystemMove()) {
-            move(event->globalPosition().toPoint() - m_oldMousePos);
-        }
-        event->accept();
-    }
-
-    return FramelessWindow::mouseMoveEvent(event);
-}
-
-void MainWindow::mouseReleaseEvent(QMouseEvent *event)
-{
-    m_clickedOnWindow = false;
-
-    // It seems the forward/back mouse button won't generate a key event [1] so we can't use
-    // QShortcut or QKeySequence to indicate these shortcuts, so we do it here.
-    // Reference:
-    // [1]: https://codereview.qt-project.org/c/qt/qtbase/+/177475
-    if (event->button() == Qt::ForwardButton || event->button() == Qt::BackButton) {
-        event->button() == Qt::BackButton ? galleryPrev() : galleryNext();
-        event->accept();
-    }
-
-    return FramelessWindow::mouseReleaseEvent(event);
-}
-
 void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
 {
     // The forward/back mouse button can also used to trigger a mouse double-click event
@@ -458,81 +361,73 @@ void MainWindow::resizeEvent(QResizeEvent *event)
 
 void MainWindow::contextMenuEvent(QContextMenuEvent *event)
 {
+    // TODO: Update this function.
     QMenu * menu = new QMenu;
+
+    // TODO: currentImageFileUrl() may be redundant.
     QMenu * copyMenu = new QMenu(tr("&Copy"));
     QUrl currentFileUrl = currentImageFileUrl();
 
-    QAction * copyPixmap = m_am->actionCopyPixmap;
-    QAction * copyFilePath = m_am->actionCopyFilePath;
-
     copyMenu->setIcon(QIcon::fromTheme(u"edit-copy"_s));
-    copyMenu->addAction(copyPixmap);
+    copyMenu->addAction(m_am->actionCopyPixmap);
     if (currentFileUrl.isValid()) {
-        copyMenu->addAction(copyFilePath);
+        copyMenu->addAction(m_am->actionCopyFilePath);
     }
-
-    QAction * paste = m_am->actionPaste;
-
-    QAction * trash = m_am->actionTrash;
-
-    QAction * stayOnTopMode = m_am->actionToggleStayOnTop;
-    stayOnTopMode->setCheckable(true);
-    stayOnTopMode->setChecked(stayOnTop());
-
-    QAction * protectedMode = m_am->actionToggleProtectMode;
-    protectedMode->setCheckable(true);
-    protectedMode->setChecked(m_protectedMode);
-
-    QAction * avoidResetTransform = m_am->actionToggleAvoidResetTransform;
-    avoidResetTransform->setCheckable(true);
-    avoidResetTransform->setChecked(m_graphicsView->avoidResetTransform());
-
-    QAction * toggleSettings = m_am->actionSettings;
-    QAction * helpAction = m_am->actionHelp;
-    QAction * propertiesAction = m_am->actionProperties;
-
-#if 0
-    menu->addAction(m_am->actionOpen);
-#endif // 0
-
     if (copyMenu->actions().count() == 1) {
         menu->addActions(copyMenu->actions());
     } else {
         menu->addMenu(copyMenu);
     }
 
-    if (canPaste()) {
-        menu->addAction(paste);
-    }
+    menu->addSeparator();
 
-#if 0
-    if (currentFileUrl.isValid()) {
-        menu->addAction(m_am->actionSaveAs);
-    }
-#endif // 0
+    menu->addAction(m_am->actionPrevPicture);
+    menu->addAction(m_am->actionNextPicture);
 
     menu->addSeparator();
 
-    menu->addAction(m_am->actionHorizontalFlip);
-#if 0
-    menu->addAction(m_am->actionFitInView);
+    menu->addAction(m_am->actionActualSize);
+    menu->addAction(m_am->actionFitToScreen);
     menu->addAction(m_am->actionFitByWidth);
-#endif // 0
+    menu->addAction(m_am->actionFitByHeight);
+    menu->addAction(m_am->actionZoomIn);
+    menu->addAction(m_am->actionZoomOut);
+
     menu->addSeparator();
-    menu->addAction(stayOnTopMode);
-    menu->addAction(protectedMode);
+
+    menu->addAction(m_am->actionFlipHorizontal);
+    menu->addAction(m_am->actionFlipVertical);
+    menu->addAction(m_am->actionRotateClockwise);
+    menu->addAction(m_am->actionRotateCounterClockwise);
+
+    menu->addSeparator();
+
+    // TODO: Move checked update to action manager.
+    QAction * avoidResetTransform = m_am->actionToggleAvoidResetTransform;
+    avoidResetTransform->setCheckable(true);
+    avoidResetTransform->setChecked(m_gv->avoidResetTransform());
     menu->addAction(avoidResetTransform);
-    menu->addSeparator();
-    menu->addAction(toggleSettings);
-    menu->addAction(helpAction);
+    menu->addAction(m_am->actionToggleCheckerboard);
+    QAction * pauseAnimation = m_am->actionTogglePauseAnimation;
+    pauseAnimation->setCheckable(true);
+    pauseAnimation->setChecked(m_gv->scene()->pauseAnimation());
+    menu->addAction(pauseAnimation);
+    menu->addAction(m_am->actionAnimationNextFrame);
+
     if (currentFileUrl.isValid()) {
         menu->addSeparator();
         if (currentFileUrl.isLocalFile()) {
-            menu->addAction(trash);
+            menu->addAction(m_am->actionTrash);
             menu->addAction(m_am->actionLocateInFileManager);
         }
-        menu->addAction(propertiesAction);
+        menu->addAction(m_am->actionProperties);
     }
+
+    menu->addSeparator();
+
+    menu->addAction(m_am->actionSettings);
+    menu->addAction(m_am->actionHelp);
+
     menu->exec(mapToGlobal(event->pos()));
     menu->deleteLater();
     copyMenu->deleteLater();
@@ -565,7 +460,7 @@ void MainWindow::dropEvent(QDropEvent *event)
     if (mimeData->hasUrls()) {
         const QList<QUrl> &urls = mimeData->urls();
         if (urls.isEmpty()) {
-            m_graphicsView->showText(tr("File url list is empty"));
+            m_gv->showText(tr("File url list is empty"));
         } else {
             showUrls(urls);
         }
@@ -573,14 +468,14 @@ void MainWindow::dropEvent(QDropEvent *event)
         QImage img = qvariant_cast<QImage>(mimeData->imageData());
         QPixmap pixmap = QPixmap::fromImage(img);
         if (pixmap.isNull()) {
-            m_graphicsView->showText(tr("Image data is invalid"));
+            m_gv->showText(tr("Image data is invalid"));
         } else {
-            m_graphicsView->showImage(pixmap);
+            m_gv->showImage(pixmap);
         }
     } else if (mimeData->hasText()) {
-        m_graphicsView->showText(mimeData->text());
+        m_gv->showText(mimeData->text());
     } else {
-        m_graphicsView->showText(tr("Not supported mimedata: %1").arg(mimeData->formats().first()));
+        m_gv->showText(tr("Not supported mimedata: %1").arg(mimeData->formats().first()));
     }
 }
 
@@ -598,50 +493,18 @@ void MainWindow::centerWindow()
 
 void MainWindow::closeWindow()
 {
-    if (Settings::instance()->useBuiltInCloseAnimation()) {
-        QRect windowRect(this->geometry());
-        m_floatUpAnimation->setStartValue(windowRect);
-        m_floatUpAnimation->setEndValue(windowRect.adjusted(0, -80, 0, 0));
-        m_floatUpAnimation->setStartValue(QRect(this->geometry().x(), this->geometry().y(), this->geometry().width(), this->geometry().height()));
-        m_floatUpAnimation->setEndValue(QRect(this->geometry().x(), this->geometry().y()-80, this->geometry().width(), this->geometry().height()));
-        m_exitAnimationGroup->start();
-    } else {
-        doCloseWindow();
-    }
 }
 
 void MainWindow::updateWidgetsPosition()
 {
-    m_closeButton->move(width() - m_closeButton->width(), 0);
-    m_prevButton->move(25, (height() - m_prevButton->sizeHint().height()) / 2);
-    m_nextButton->move(width() - m_nextButton->sizeHint().width() - 25,
-                       (height() - m_prevButton->sizeHint().height()) / 2);
     m_bottomButtonGroup->move((width() - m_bottomButtonGroup->width()) / 2,
-                              height() - m_bottomButtonGroup->height());
-    m_gv->move(width() - m_gv->width(), height() - m_gv->height());
-}
-
-void MainWindow::toggleProtectedMode()
-{
-    m_protectedMode = !m_protectedMode;
-    m_closeButton->setVisible(!m_protectedMode);
-    updateGalleryButtonsVisibility();
-}
-
-void MainWindow::toggleStayOnTop()
-{
-    setWindowFlag(Qt::WindowStaysOnTopHint, !stayOnTop());
-    show();
+                              (72 - m_bottomButtonGroup->height()) / 2 + (height() - 72));
+    m_nav->move(width() - m_nav->width(), height() - m_nav->height());
 }
 
 void MainWindow::toggleAvoidResetTransform()
 {
-    m_graphicsView->setAvoidResetTransform(!m_graphicsView->avoidResetTransform());
-}
-
-bool MainWindow::stayOnTop() const
-{
-    return windowFlags().testFlag(Qt::WindowStaysOnTopHint);
+    m_gv->setAvoidResetTransform(!m_gv->avoidResetTransform());
 }
 
 bool MainWindow::canPaste() const
@@ -664,10 +527,8 @@ bool MainWindow::canPaste() const
 
 void MainWindow::quitAppAction(bool force)
 {
-    if (!m_protectedMode || force) {
     closeWindow();
 }
-}
 
 void MainWindow::toggleFullscreen()
 {
@@ -692,132 +553,12 @@ QSize MainWindow::sizeHint() const
     return QSize(710, 530);
 }
 
-void MainWindow::on_actionOpen_triggered()
-{
-    QStringList picturesLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation);
-    QUrl pictureUrl = picturesLocations.isEmpty() ? QUrl::fromLocalFile(picturesLocations.first())
-                                                  : QUrl::fromLocalFile(QDir::homePath());
-    QList<QUrl> urls(QFileDialog::getOpenFileUrls(this, QString(), pictureUrl));
-    if (!urls.isEmpty()) {
-        showUrls(urls);
-    }
-}
-
-void MainWindow::on_actionSaveAs_triggered()
-{
-    QUrl currentFileUrl = currentImageFileUrl();
-    if (!currentFileUrl.isValid()) {
-        QMessageBox::warning(this, tr("Save As"), tr("No image is currently open."));
-        return;
-    }
-
-    QStringList supportedFormats;
-    QStringList nameFilters;
-
-    const QList<QByteArray> imageFormats = QImageWriter::supportedImageFormats();
-    for (const QByteArray &format : imageFormats) {
-        QString formatStr = QString::fromLatin1(format).toLower();
-        if (!formatStr.isEmpty()) {
-            supportedFormats << formatStr;
-            nameFilters << tr("%1 Image (*.%2)").arg(formatStr.toUpper(), formatStr);
-        }
-    }
-
-    if (imageFormats.isEmpty()) {
-        QMessageBox::warning(this, tr("Save As"),
-                            tr("No supported image formats are available."));
-        return;
-    }
-
-    QString selectedFilter;
-    QString saveFilePath = QFileDialog::getSaveFileName(this,
-        tr("Save As"),
-        QStandardPaths::writableLocation(QStandardPaths::PicturesLocation),
-        nameFilters.join(";;"),
-        &selectedFilter);
-
-    if (saveFilePath.isEmpty()) {
-        return; // User cancelled
-    }
-
-    // Ensure the file has the correct extension
-    QString expectedExtension;
-
-    const int filterIndex = nameFilters.indexOf(selectedFilter);
-    if (filterIndex != -1) {
-        expectedExtension = supportedFormats.at(filterIndex);
-    }
-
-    if (!expectedExtension.isEmpty() && !saveFilePath.endsWith('.' + expectedExtension, Qt::CaseInsensitive)) {
-        saveFilePath += '.' + expectedExtension;
-    }
-
-    // Save the image
-    QImageReader imageReader(currentFileUrl.toLocalFile());
-    imageReader.setAutoTransform(true);
-    imageReader.setDecideFormatFromContent(true);
-    imageReader.setAllocationLimit(0);
-    QImage img(imageReader.read());
-    QImageWriter writer(saveFilePath);
-    writer.setFormat(expectedExtension.toLatin1());
-    if (!writer.write(img)) {
-        QMessageBox::warning(this, tr("Save As"),
-                            tr("Failed to save image: %1").arg(writer.errorString()));
-        return;
-    }
-}
-
-void MainWindow::on_actionActualSize_triggered()
-{
-    m_graphicsView->resetScale();
-    m_graphicsView->setEnableAutoFitInView(false);
-    m_graphicsView->setLongImageMode(false);
-}
-
-void MainWindow::on_actionToggleMaximize_triggered()
-{
-    toggleMaximize();
-}
-
-void MainWindow::on_actionZoomIn_triggered()
-{
-    if (m_graphicsView->scaleFactor() < 1000) {
-        m_graphicsView->zoomView(1.25);
-    }
-}
-
-void MainWindow::on_actionZoomOut_triggered()
-{
-    m_graphicsView->zoomView(0.8);
-}
-
-void MainWindow::on_actionHorizontalFlip_triggered()
-{
-    m_graphicsView->flipView();
-}
-
-void MainWindow::on_actionFitInView_triggered()
-{
-    m_graphicsView->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
-    m_graphicsView->setEnableAutoFitInView(m_graphicsView->scaleFactor() <= 1);
-    m_graphicsView->setLongImageMode(false);
-}
-
-void MainWindow::on_actionFitByWidth_triggered()
-{
-    m_graphicsView->fitByOrientation();
-}
-
-void MainWindow::on_actionFitLongImage_triggered()
-{
-    m_graphicsView->setLongImageMode(true);
-    m_graphicsView->fitLongImage();
-}
+// region: Action Trigger
 
 void MainWindow::on_actionCopyPixmap_triggered()
 {
     QClipboard *cb = QApplication::clipboard();
-    cb->setPixmap(m_graphicsView->scene()->renderToPixmap());
+    cb->setPixmap(m_gv->scene()->renderToPixmap());
 }
 
 void MainWindow::on_actionCopyFilePath_triggered()
@@ -829,43 +570,99 @@ void MainWindow::on_actionCopyFilePath_triggered()
     }
 }
 
-void MainWindow::on_actionPaste_triggered()
+void MainWindow::on_actionPrevPicture_triggered()
 {
-    QImage clipboardImage;
-    QUrl clipboardFileUrl;
+    galleryPrev();
+}
 
-    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
-    if (clipboardData->hasImage()) {
-        QVariant imageVariant(clipboardData->imageData());
-        if (imageVariant.isValid()) {
-            clipboardImage = qvariant_cast<QImage>(imageVariant);
+void MainWindow::on_actionNextPicture_triggered()
+{
+    galleryNext();
 }
-    } else if (clipboardData->hasText()) {
-        QString clipboardText(clipboardData->text());
-        if (clipboardText.startsWith("PICTURE:")) {
-            QString maybeFilename(clipboardText.mid(8));
-            if (QFile::exists(maybeFilename)) {
-                clipboardFileUrl = QUrl::fromLocalFile(maybeFilename);
+
+void MainWindow::on_actionActualSize_triggered()
+{
+    m_gv->resetScale();
+    m_gv->setEnableAutoFitToScreen(false);
 }
+
+void MainWindow::on_actionFitToScreen_triggered()
+{
+    m_gv->fitInView(m_nav->sceneRect(), Qt::KeepAspectRatio);
+    m_gv->setEnableAutoFitToScreen(m_gv->scaleFactor() <= 1);
+}
+
+void MainWindow::on_actionFitByWidth_triggered()
+{
+    m_gv->fitByOrientation(Qt::Orientation::Horizontal);
+}
+
+void MainWindow::on_actionFitByHeight_triggered()
+{
+    m_gv->fitByOrientation(Qt::Orientation::Vertical);
+}
+
+void MainWindow::on_actionZoomIn_triggered()
+{
+    if (m_gv->scaleFactor() < 1000) {
+        m_gv->zoomView(1.25);
     }
 }
 
-    if (!clipboardImage.isNull()) {
-        setWindowTitle(tr("Image From Clipboard"));
-        m_graphicsView->showImage(clipboardImage);
-        clearGallery();
-    } else if (clipboardFileUrl.isValid()) {
-        m_graphicsView->showFileFromPath(clipboardFileUrl.toLocalFile());
-        m_pm->loadPlaylist(clipboardFileUrl);
+void MainWindow::on_actionZoomOut_triggered()
+{
+    m_gv->zoomView(0.8);
 }
+
+void MainWindow::on_actionFlipHorizontal_triggered()
+{
+    m_gv->flipView(true);
+}
+
+void MainWindow::on_actionFlipVertical_triggered()
+{
+    m_gv->flipView(false);
+}
+
+void MainWindow::on_actionRotateClockwise_triggered()
+{
+    m_gv->rotateView(true);
+    m_gv->displayScene();
+}
+
+void MainWindow::on_actionRotateCounterClockwise_triggered()
+{
+    m_gv->rotateView(false);
+    m_gv->displayScene();
+}
+
+void MainWindow::on_actionToggleAvoidResetTransform_triggered()
+{
+    toggleAvoidResetTransform();
+}
+
+void MainWindow::on_actionToggleCheckerboard_triggered()
+{
+    m_gv->toggleCheckerboard(QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ShiftModifier));
+}
+
+void MainWindow::on_actionTogglePauseAnimation_triggered()
+{
+    m_gv->scene()->togglePauseAnimation();
+}
+
+void MainWindow::on_actionAnimationNextFrame_triggered()
+{
+    m_gv->scene()->skipAnimationFrame(1);
 }
 
 void MainWindow::on_actionTrash_triggered()
 {
-    QModelIndex index = m_pm->curIndex();
-    if (!m_pm->urlByIndex(index).isLocalFile()) return;
+    auto index = m_pm->currentIndex();
+    if (!index.has_value()) return;
+    if (!m_pm->urlByIndex(*index).isLocalFile()) return;
 
-    QFile file(m_pm->localFileByIndex(index));
+    QFile file(m_pm->localFileByIndex(*index));
     QFileInfo fileInfo(file.fileName());
 
     QMessageBox::StandardButton result = QMessageBox::question(this, tr("Move to Trash"),
@@ -882,87 +679,6 @@ void MainWindow::on_actionTrash_triggered()
     }
 }
 
-void MainWindow::on_actionToggleCheckerboard_triggered()
-{
-    // TODO: is that okay to do this since we plan to support custom shortcuts?
-    m_graphicsView->toggleCheckerboard(QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ShiftModifier));
-}
-
-void MainWindow::on_actionRotateClockwise_triggered()
-{
-    m_graphicsView->rotateView();
-    m_graphicsView->displayScene();
-}
-
-void MainWindow::on_actionRotateCounterClockwise_triggered()
-{
-    m_graphicsView->rotateView(false);
-    m_graphicsView->displayScene();
-}
-
-void MainWindow::on_actionPrevPicture_triggered()
-{
-    galleryPrev();
-}
-
-void MainWindow::on_actionNextPicture_triggered()
-{
-    galleryNext();
-}
-
-void MainWindow::on_actionTogglePauseAnimation_triggered()
-{
-    m_graphicsView->scene()->togglePauseAnimation();
-}
-
-void MainWindow::on_actionAnimationNextFrame_triggered()
-{
-    m_graphicsView->scene()->skipAnimationFrame(1);
-}
-
-void MainWindow::on_actionToggleStayOnTop_triggered()
-{
-    toggleStayOnTop();
-}
-
-void MainWindow::on_actionToggleProtectMode_triggered()
-{
-    toggleProtectedMode();
-}
-
-void MainWindow::on_actionToggleAvoidResetTransform_triggered()
-{
-    toggleAvoidResetTransform();
-}
-
-void MainWindow::on_actionSettings_triggered()
-{
-    SettingsDialog * sd = new SettingsDialog(this);
-    sd->exec();
-    sd->deleteLater();
-}
-
-void MainWindow::on_actionHelp_triggered()
-{
-    AboutDialog * ad = new AboutDialog(this);
-    ad->exec();
-    ad->deleteLater();
-}
-
-void MainWindow::on_actionProperties_triggered()
-{
-    QUrl currentFileUrl = currentImageFileUrl();
-    if (!currentFileUrl.isValid()) return;
-
-    MetadataModel * md = new MetadataModel();
-    md->setFile(currentFileUrl.toLocalFile());
-
-    MetadataDialog * ad = new MetadataDialog(this);
-    ad->setMetadataModel(md);
-    ad->exec();
-    ad->deleteLater();
-}
-
 void MainWindow::on_actionLocateInFileManager_triggered()
 {
     QUrl currentFileUrl = currentImageFileUrl();
@@ -998,33 +714,39 @@ void MainWindow::on_actionLocateInFileManager_triggered()
 #endif // Q_OS_WIN
 }
 
-void MainWindow::on_actionQuitApp_triggered()
+void MainWindow::on_actionProperties_triggered()
 {
-    quitAppAction(false);
+    QUrl currentFileUrl = currentImageFileUrl();
+    if (!currentFileUrl.isValid()) return;
+
+    MetadataModel * md = new MetadataModel();
+    md->setFile(currentFileUrl.toLocalFile());
+
+    MetadataDialog * ad = new MetadataDialog(this);
+    ad->setMetadataModel(md);
+    ad->exec();
+    ad->deleteLater();
 }
 
-void MainWindow::doCloseWindow()
+void MainWindow::on_actionSettings_triggered()
 {
-#ifdef Q_OS_MAC
-    this->hide();
-#else
-    this->close();
-#endif
+    SettingsDialog * sd = new SettingsDialog(this);
+    sd->exec();
+    sd->deleteLater();
 }
 
+void MainWindow::on_actionHelp_triggered()
+{
+    AboutDialog * ad = new AboutDialog(this);
+    ad->exec();
+    ad->deleteLater();
+}
+
+// endregion
+
 bool MainWindow::updateFileWatcher(const QString &basePath)
 {
     m_fileSystemWatcher->removePaths(m_fileSystemWatcher->files());
     if (!basePath.isEmpty()) return m_fileSystemWatcher->addPath(basePath);
     return false;
 }
-
-void MainWindow::updateGalleryButtonsVisibility()
-{
-    const int galleryFileCount = m_pm->totalCount();
-    const bool loopGallery = Settings::instance()->loopGallery();
-    m_prevButton->setVisible(!m_protectedMode && galleryFileCount > 1);
-    m_nextButton->setVisible(!m_protectedMode && galleryFileCount > 1);
-    m_prevButton->setEnabled(loopGallery || !m_pm->isFirstIndex());
-    m_nextButton->setEnabled(loopGallery || !m_pm->isLastIndex());
-}

app/mainwindow.h

@@ -12,14 +12,12 @@
 #include <QPushButton>
 
 QT_BEGIN_NAMESPACE
-class QGraphicsOpacityEffect;
 class QGraphicsView;
 class QFileSystemWatcher;
 QT_END_NAMESPACE
 
 class ActionManager;
 class PlaylistManager;
-class ToolButton;
 class GraphicsView;
 class NavigatorView;
 class BottomButtonGroup;
@@ -47,9 +45,6 @@ protected slots:
     void showEvent(QShowEvent *event) override;
     void enterEvent(QEnterEvent *event) override;
     void leaveEvent(QEvent *event) override;
-    void mousePressEvent(QMouseEvent *event) override;
-    void mouseMoveEvent(QMouseEvent *event) override;
-    void mouseReleaseEvent(QMouseEvent *event) override;
     void mouseDoubleClickEvent(QMouseEvent *event) override;
     void wheelEvent(QWheelEvent *event) override;
     void resizeEvent(QResizeEvent *event) override;
@@ -61,10 +56,7 @@ protected slots:
     void centerWindow();
     void closeWindow();
     void updateWidgetsPosition();
-    void toggleProtectedMode();
-    void toggleStayOnTop();
     void toggleAvoidResetTransform();
-    bool stayOnTop() const;
     bool canPaste() const;
     void quitAppAction(bool force = false);
     void toggleFullscreen();
@@ -74,63 +66,47 @@ protected:
     QSize sizeHint() const override;
 
 private slots:
-    void on_actionOpen_triggered();
-    void on_actionSaveAs_triggered();
-
-    void on_actionActualSize_triggered();
-    void on_actionToggleMaximize_triggered();
-    void on_actionZoomIn_triggered();
-    void on_actionZoomOut_triggered();
-    void on_actionToggleCheckerboard_triggered();
-    void on_actionRotateClockwise_triggered();
-    void on_actionRotateCounterClockwise_triggered();
+    void on_actionCopyPixmap_triggered();
+    void on_actionCopyFilePath_triggered();
 
     void on_actionPrevPicture_triggered();
     void on_actionNextPicture_triggered();
 
+    void on_actionActualSize_triggered();
+    void on_actionFitToScreen_triggered();
+    void on_actionFitByWidth_triggered();
+    void on_actionFitByHeight_triggered();
+    void on_actionZoomIn_triggered();
+    void on_actionZoomOut_triggered();
+
+    void on_actionFlipHorizontal_triggered();
+    void on_actionFlipVertical_triggered();
+    void on_actionRotateClockwise_triggered();
+    void on_actionRotateCounterClockwise_triggered();
+
+    void on_actionToggleAvoidResetTransform_triggered();
+    void on_actionToggleCheckerboard_triggered();
     void on_actionTogglePauseAnimation_triggered();
     void on_actionAnimationNextFrame_triggered();
 
-    void on_actionHorizontalFlip_triggered();
-    void on_actionFitInView_triggered();
-    void on_actionFitByWidth_triggered();
-    void on_actionFitLongImage_triggered();
-    void on_actionCopyPixmap_triggered();
-    void on_actionCopyFilePath_triggered();
-    void on_actionPaste_triggered();
     void on_actionTrash_triggered();
-    void on_actionToggleStayOnTop_triggered();
-    void on_actionToggleProtectMode_triggered();
-    void on_actionToggleAvoidResetTransform_triggered();
+    void on_actionLocateInFileManager_triggered();
+    void on_actionProperties_triggered();
+
     void on_actionSettings_triggered();
     void on_actionHelp_triggered();
-    void on_actionProperties_triggered();
-    void on_actionLocateInFileManager_triggered();
-    void on_actionQuitApp_triggered();
-
-    void doCloseWindow();
 
 private:
     bool updateFileWatcher(const QString & basePath = QString());
-    void updateGalleryButtonsVisibility();
 
 private:
     ActionManager *m_am;
     PlaylistManager *m_pm;
+    GraphicsView *m_gv;
+    NavigatorView *m_nav;
 
-    QPoint m_oldMousePos;
-    QPropertyAnimation *m_fadeOutAnimation;
-    QPropertyAnimation *m_floatUpAnimation;
-    QParallelAnimationGroup *m_exitAnimationGroup;
     QFileSystemWatcher *m_fileSystemWatcher;
-    ToolButton *m_closeButton;
-    ToolButton *m_prevButton;
-    ToolButton *m_nextButton;
-    GraphicsView *m_graphicsView;
-    NavigatorView *m_gv;
     BottomButtonGroup *m_bottomButtonGroup;
-    bool m_protectedMode = false;
-    bool m_clickedOnWindow = false;
 };
 
 #endif // MAINWINDOW_H

app/metadatadialog.cpp

@@ -3,12 +3,12 @@
 // SPDX-License-Identifier: MIT
 
 #include "metadatadialog.h"
+#include "ui_metadatadialog.h"
 
 #include <QDialogButtonBox>
 #include <QPainter>
 #include <QStyledItemDelegate>
 #include <QTreeView>
-#include <QVBoxLayout>
 #include <QHeaderView>
 
 #include "metadatamodel.h"
@@ -73,30 +73,33 @@ protected:
 };
 
 MetadataDialog::MetadataDialog(QWidget *parent)
-    : QDialog(parent)
-    , m_treeView(new PropertyTreeView(this))
+    : QDialog(parent), ui(new QT_PREPEND_NAMESPACE(Ui::MetadataDialog))
 {
+    ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
+
+    // YYC MARK:
+    // Because we use custom QTreeView and we do not want to expose it to public domain.
+    // So I have to use this way as the compromise.
+
+    // Create our custom QTreeView and insert them
+    m_treeView = new PropertyTreeView(this);
+    auto* layout = ui->verticalLayout;
+    const int index = layout->indexOf(ui->m_buttonBox);
+    layout->insertWidget(index, m_treeView);
+
+    // Setup our custom QTreeView
     m_treeView->setRootIsDecorated(false);
     m_treeView->setIndentation(0);
     m_treeView->setItemDelegate(new PropertyTreeItemDelegate(m_treeView));
     m_treeView->header()->resizeSection(0, sizeHint().width() / 2);
 
-    setWindowTitle(tr("Image Metadata"));
-
-    QDialogButtonBox * buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);
-
-    setLayout(new QVBoxLayout);
-    layout()->addWidget(m_treeView);
-    layout()->addWidget(buttonBox);
-
-    connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::close);
-
-    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
+    connect(ui->m_buttonBox, &QDialogButtonBox::rejected, this, &QDialog::close);
 }
 
 MetadataDialog::~MetadataDialog()
 {
-
+    delete ui;
 }
 
 void MetadataDialog::setMetadataModel(MetadataModel * model)

app/metadatadialog.h

@@ -11,6 +11,12 @@ QT_BEGIN_NAMESPACE
 class QTreeView;
 QT_END_NAMESPACE
 
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class MetadataDialog;
+}
+QT_END_NAMESPACE
+
 class MetadataModel;
 class MetadataDialog : public QDialog
 {
@@ -25,6 +31,7 @@ public:
 
 private:
     QTreeView * m_treeView = nullptr;
+    QT_PREPEND_NAMESPACE(Ui::MetadataDialog) *ui;
 };
 
 #endif // METADATADIALOG_H

app/metadatadialog.ui

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MetadataDialog</class>
+ <widget class="QDialog" name="MetadataDialog">
+  <property name="windowModality">
+   <enum>Qt::NonModal</enum>
+  </property>
+  <property name="windowTitle">
+   <string>Image Metadata</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QDialogButtonBox" name="m_buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Close</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/navigatorview.cpp

@@ -5,8 +5,9 @@
 #include "navigatorview.h"
 
 #include "graphicsview.h"
-#include "opacityhelper.h"
 
+#include <QStyleHints>
+#include <QOperatingSystemVersion>
 #include <QMouseEvent>
 #include <QDebug>
 #include <QTimer>
@@ -14,12 +15,12 @@
 NavigatorView::NavigatorView(QWidget *parent)
     : QGraphicsView (parent)
     , m_viewportRegion(this->rect())
-    , m_opacityHelper(new OpacityHelper(this))
 {
     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-    setStyleSheet("background-color: rgba(0, 0, 0, 120);"
-                  "border-radius: 3px;");
+
+    updateStyle(qGuiApp->styleHints()->colorScheme());
+    connect(qGuiApp->styleHints(), &QStyleHints::colorSchemeChanged, this, &NavigatorView::updateStyle);
 }
 
 // doesn't take or manage its ownership
@@ -28,11 +29,6 @@ void NavigatorView::setMainView(GraphicsView *mainView)
     m_mainView = mainView;
 }
 
-void NavigatorView::setOpacity(qreal opacity, bool animated)
-{
-    m_opacityHelper->setOpacity(opacity, animated);
-}
-
 void NavigatorView::updateMainViewportRegion()
 {
     // Use QTimer::singleShot with lambda to delay the update
@@ -45,6 +41,39 @@ void NavigatorView::updateMainViewportRegion()
     });
 }
 
+void NavigatorView::updateStyle(Qt::ColorScheme colorScheme) {
+    // YYC MARK:
+    // If we are using Windows 10 and lower system or Qt which do not support "Windows 11"
+    // theme (lower than Qt 6.7), we should only support light mode.
+    // Because Qt's dark-mode-aware "Windows 11" theme is only well-supported on Windows 11.
+#if defined(Q_OS_WIN)
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+    colorScheme = Qt::ColorScheme::Light;
+#else
+    if (QOperatingSystemVersion::current() < QOperatingSystemVersion::Windows11) {
+        colorScheme = Qt::ColorScheme::Light;
+    }
+#endif // QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+#endif // defined(Q_OS_WIN)
+
+    switch (colorScheme) {
+    case Qt::ColorScheme::Dark:
+    setStyleSheet(R"#(
+border-style: none;
+background-color: rgba(255, 255, 255, 70);
+)#");
+        break;
+    case Qt::ColorScheme::Light:
+    case Qt::ColorScheme::Unknown:
+    default:
+        setStyleSheet(R"#(
+border-style: none;
+background-color: rgba(0, 0, 0, 70);
+)#");
+        break;
+    }
+}
+
 void NavigatorView::mousePressEvent(QMouseEvent *event)
 {
     m_mouseDown = true;

app/navigatorview.h

@@ -7,7 +7,6 @@
 
 #include <QGraphicsView>
 
-class OpacityHelper;
 class GraphicsView;
 class NavigatorView : public QGraphicsView
 {
@@ -16,10 +15,10 @@ public:
     NavigatorView(QWidget *parent = nullptr);
 
     void setMainView(GraphicsView *mainView);
-    void setOpacity(qreal opacity, bool animated = true);
 
 public slots:
     void updateMainViewportRegion();
+    void updateStyle(Qt::ColorScheme colorScheme);
 
 private:
     void mousePressEvent(QMouseEvent * event) override;
@@ -32,7 +31,6 @@ private:
     bool m_mouseDown = false;
     QPolygon m_viewportRegion;
     QGraphicsView *m_mainView = nullptr;
-    OpacityHelper *m_opacityHelper = nullptr;
 };
 
 #endif // NAVIGATORVIEW_H

app/opacityhelper.cpp

@@ -1,31 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#include "opacityhelper.h"
-
-#include <QGraphicsOpacityEffect>
-#include <QPropertyAnimation>
-
-OpacityHelper::OpacityHelper(QWidget *parent)
-    : QObject(parent)
-    , m_opacityFx(new QGraphicsOpacityEffect(parent))
-    , m_opacityAnimation(new QPropertyAnimation(m_opacityFx, "opacity"))
-{
-    parent->setGraphicsEffect(m_opacityFx);
-
-    m_opacityAnimation->setDuration(300);
-}
-
-void OpacityHelper::setOpacity(qreal opacity, bool animated)
-{
-    if (!animated) {
-        m_opacityFx->setOpacity(opacity);
-        return;
-    }
-
-    m_opacityAnimation->stop();
-    m_opacityAnimation->setStartValue(m_opacityFx->opacity());
-    m_opacityAnimation->setEndValue(opacity);
-    m_opacityAnimation->start();
-}

app/opacityhelper.h

@@ -1,27 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#ifndef OPACITYHELPER_H
-#define OPACITYHELPER_H
-
-#include <QWidget>
-
-QT_BEGIN_NAMESPACE
-class QGraphicsOpacityEffect;
-class QPropertyAnimation;
-QT_END_NAMESPACE
-
-class OpacityHelper : QObject
-{
-public:
-    OpacityHelper(QWidget * parent);
-
-    void setOpacity(qreal opacity, bool animated = true);
-
-protected:
-    QGraphicsOpacityEffect * m_opacityFx;
-    QPropertyAnimation * m_opacityAnimation;
-};
-
-#endif // OPACITYHELPER_H

app/settings.cpp

@@ -13,6 +13,14 @@
 #include <QKeySequence>
 #include <QMetaEnum>
 
+Settings *Settings::instance()
+{
+    // SAFETY:
+    // This is a global singleton and it is leaked by design.
+    static Settings* INSTANCE = new Settings(nullptr);
+    return INSTANCE;
+}
+
 namespace QEnumHelper
 {
     template <typename E>
@@ -34,27 +42,6 @@ namespace QEnumHelper
     }
 }
 
-Settings *Settings::m_settings_instance = nullptr;
-
-Settings *Settings::instance()
-{
-    if (!m_settings_instance) {
-        m_settings_instance = new Settings;
-    }
-
-    return m_settings_instance;
-}
-
-bool Settings::stayOnTop() const
-{
-    return m_qsettings->value("stay_on_top", true).toBool();
-}
-
-bool Settings::useBuiltInCloseAnimation() const
-{
-    return m_qsettings->value("use_built_in_close_animation", true).toBool();
-}
-
 bool Settings::useLightCheckerboard() const
 {
     return m_qsettings->value("use_light_checkerboard", false).toBool();
@@ -65,11 +52,6 @@ bool Settings::loopGallery() const
     return m_qsettings->value("loop_gallery", true).toBool();
 }
 
-bool Settings::autoLongImageMode() const
-{
-    return m_qsettings->value("auto_long_image_mode", true).toBool();
-}
-
 bool Settings::svgTiny12Only() const
 {
     // Qt 6.7.0's SVG support is terrible caused by huge memory usage, see QTBUG-124287
@@ -85,44 +67,28 @@ bool Settings::svgTiny12Only() const
 
 Settings::DoubleClickBehavior Settings::doubleClickBehavior() const
 {
-    QString result = m_qsettings->value("double_click_behavior", "Close").toString();
-
-    return QEnumHelper::fromString<DoubleClickBehavior>(result, DoubleClickBehavior::Close);
+    QString result = m_qsettings->value("double_click_behavior", "").toString();
+    return QEnumHelper::fromString<DoubleClickBehavior>(result, DoubleClickBehavior::Ignore);
 }
 
 Settings::MouseWheelBehavior Settings::mouseWheelBehavior() const
 {
-    QString result = m_qsettings->value("mouse_wheel_behavior", "Zoom").toString();
-
+    QString result = m_qsettings->value("mouse_wheel_behavior", "").toString();
     return QEnumHelper::fromString<MouseWheelBehavior>(result, MouseWheelBehavior::Zoom);
 }
 
 Settings::WindowSizeBehavior Settings::initWindowSizeBehavior() const
 {
-    QString result = m_qsettings->value("init_window_size_behavior", "Auto").toString();
-
-    return QEnumHelper::fromString<WindowSizeBehavior>(result, WindowSizeBehavior::Auto);
+    QString result = m_qsettings->value("init_window_size_behavior", "").toString();
+    return QEnumHelper::fromString<WindowSizeBehavior>(result, WindowSizeBehavior::Windowed);
 }
 
 Qt::HighDpiScaleFactorRoundingPolicy Settings::hiDpiScaleFactorBehavior() const
 {
-    QString result = m_qsettings->value("hidpi_scale_factor_behavior", "PassThrough").toString();
-
+    QString result = m_qsettings->value("hidpi_scale_factor_behavior", "").toString();
     return QEnumHelper::fromString<Qt::HighDpiScaleFactorRoundingPolicy>(result, Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
 }
 
-void Settings::setStayOnTop(bool on)
-{
-    m_qsettings->setValue("stay_on_top", on);
-    m_qsettings->sync();
-}
-
-void Settings::setUseBuiltInCloseAnimation(bool on)
-{
-    m_qsettings->setValue("use_built_in_close_animation", on);
-    m_qsettings->sync();
-}
-
 void Settings::setUseLightCheckerboard(bool light)
 {
     m_qsettings->setValue("use_light_checkerboard", light);
@@ -135,12 +101,6 @@ void Settings::setLoopGallery(bool on)
     m_qsettings->sync();
 }
 
-void Settings::setAutoLongImageMode(bool on)
-{
-    m_qsettings->setValue("auto_long_image_mode", on);
-    m_qsettings->sync();
-}
-
 void Settings::setSvgTiny12Only(bool on)
 {
     m_qsettings->setValue("svg_tiny12_only", on);
@@ -171,47 +131,6 @@ void Settings::setHiDpiScaleFactorBehavior(Qt::HighDpiScaleFactorRoundingPolicy
     m_qsettings->sync();
 }
 
-void Settings::applyUserShortcuts(QWidget *widget)
-{
-    m_qsettings->beginGroup("shortcuts");
-    const QStringList shortcutNames = m_qsettings->allKeys();
-    for (const QString & name : shortcutNames) {
-        QList<QKeySequence> shortcuts = m_qsettings->value(name).value<QList<QKeySequence>>();
-        setShortcutsForAction(widget, name, shortcuts, false);
-    }
-    m_qsettings->endGroup();
-}
-
-bool Settings::setShortcutsForAction(QWidget *widget, const QString &objectName,
-                                     QList<QKeySequence> shortcuts, bool writeConfig)
-{
-    QAction * targetAction = nullptr;
-    for (QAction * action : widget->actions()) {
-        if (action->objectName() == objectName) {
-            targetAction = action;
-        } else {
-            for (const QKeySequence & shortcut : std::as_const(shortcuts)) {
-                if (action->shortcuts().contains(shortcut)) {
-                    return false;
-                }
-            }
-        }
-    }
-
-    if (targetAction) {
-        targetAction->setShortcuts(shortcuts);
-    }
-
-    if (targetAction && writeConfig) {
-        m_qsettings->beginGroup("shortcuts");
-        m_qsettings->setValue(objectName, QVariant::fromValue(shortcuts));
-        m_qsettings->endGroup();
-        m_qsettings->sync();
-    }
-
-    return true;
-}
-
 #if defined(FLAG_PORTABLE_MODE_SUPPORT) && defined(Q_OS_WIN)
 #include <windows.h>
 // QCoreApplication::applicationDirPath() parses the "applicationDirPath" from arg0, which...
@@ -230,8 +149,8 @@ QString getApplicationDirPath()
 }
 #endif // defined(FLAG_PORTABLE_MODE_SUPPORT) && defined(Q_OS_WIN)
 
-Settings::Settings()
-    : QObject(qApp)
+Settings::Settings(QObject *parent)
+    : QObject(parent)
 {
     QString configPath;
 

app/settings.h

@@ -25,6 +25,7 @@ public:
     };
     Q_ENUM(MouseWheelBehavior)
 
+    // TODO: I want to remove Auto behavior in future.
     enum WindowSizeBehavior {
         Auto,
         Maximized,
@@ -34,36 +35,24 @@ public:
 
     static Settings *instance();
 
-    bool stayOnTop() const;
-    bool useBuiltInCloseAnimation() const;
     bool useLightCheckerboard() const;
     bool loopGallery() const;
-    bool autoLongImageMode() const;
     bool svgTiny12Only() const;
     DoubleClickBehavior doubleClickBehavior() const;
     MouseWheelBehavior mouseWheelBehavior() const;
     WindowSizeBehavior initWindowSizeBehavior() const;
     Qt::HighDpiScaleFactorRoundingPolicy hiDpiScaleFactorBehavior() const;
 
-    void setStayOnTop(bool on);
-    void setUseBuiltInCloseAnimation(bool on);
     void setUseLightCheckerboard(bool light);
     void setLoopGallery(bool on);
-    void setAutoLongImageMode(bool on);
     void setSvgTiny12Only(bool on);
     void setDoubleClickBehavior(DoubleClickBehavior dcb);
     void setMouseWheelBehavior(MouseWheelBehavior mwb);
     void setInitWindowSizeBehavior(WindowSizeBehavior wsb);
     void setHiDpiScaleFactorBehavior(Qt::HighDpiScaleFactorRoundingPolicy hidpi);
 
-    void applyUserShortcuts(QWidget * widget);
-    bool setShortcutsForAction(QWidget * widget, const QString & objectName,
-                               QList<QKeySequence> shortcuts, bool writeConfig = true);
-
 private:
-    Settings();
-
-    static Settings *m_settings_instance;
+    Settings(QObject *parent = nullptr);
 
     QSettings *m_qsettings;
 

app/settingsdialog.cpp

@@ -3,158 +3,107 @@
 // SPDX-License-Identifier: MIT
 
 #include "settingsdialog.h"
+#include "ui_settingsdialog.h"
 
 #include "settings.h"
-#include "shortcutedit.h"
 
-#include <QAction>
-#include <QCheckBox>
-#include <QComboBox>
-#include <QFormLayout>
-#include <QKeySequenceEdit>
-#include <QScrollArea>
-#include <QSplitter>
+#include <QApplication>
+#include <QTimer>
 #include <QStringListModel>
-#include <QMessageBox>
+#include <type_traits>
+
+template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>>
+class EnumComboBoxTransformer {
+public:
+    using Pair = QPair<E, QString>;
+    using Pairs = QList<QPair<E, QString>>;
+
+    EnumComboBoxTransformer(Pairs &&pairs) : pairs(std::move(pairs)) {}
+    ~EnumComboBoxTransformer() = default;
+    Q_DISABLE_COPY_MOVE(EnumComboBoxTransformer)
+
+    /// Build Qt model used for QComboBox
+    QStringListModel* buildComboBoxModel(QObject *parent = nullptr) const {
+        QStringList dropDownEntries;
+        for (const auto& pair : std::as_const(this->pairs)) {
+            dropDownEntries.append(pair.second);
+        }
+        return new QStringListModel(dropDownEntries, parent);
+    }
+    /// Convert QComboBox index to enum value.
+    E to_value(int index) const {
+        return this->pairs.at(static_cast<qsizetype>(index)).first;
+    }
+    /// Convert enum value to QComboBox index.
+    int to_index(E value) const {
+        for (qsizetype i = 0; i < pairs.size(); ++i) {
+            if (pairs.at(i).first == value) {
+                return static_cast<int>(i);
+            }
+        }
+        // Value not found
+        throw std::invalid_argument("invalid enum value for finding index");
+    }
+
+private:
+    Pairs pairs;
+};
+
+static EnumComboBoxTransformer<Settings::DoubleClickBehavior> DC_OPTIONS {
+    {
+        {Settings::DoubleClickBehavior::Ignore, QCoreApplication::translate("SettingsDialog", "Do nothing")},
+        {Settings::DoubleClickBehavior::Close, QCoreApplication::translate("SettingsDialog", "Close the window")},
+        {Settings::DoubleClickBehavior::Maximize, QCoreApplication::translate("SettingsDialog", "Toggle maximize")},
+        {Settings::DoubleClickBehavior::FullScreen, QCoreApplication::translate("SettingsDialog", "Toggle fullscreen")}
+    }
+};
+
+static EnumComboBoxTransformer<Settings::MouseWheelBehavior, QString> MW_OPTIONS {
+    {
+        { Settings::MouseWheelBehavior::Zoom, QCoreApplication::translate("SettingsDialog", "Zoom in and out") },
+        { Settings::MouseWheelBehavior::Switch, QCoreApplication::translate("SettingsDialog", "View next or previous item") }
+    }
+};
+
+static EnumComboBoxTransformer<Settings::WindowSizeBehavior, QString> IWS_OPTIONS {
+    {
+        { Settings::WindowSizeBehavior::Auto, QCoreApplication::translate("SettingsDialog", "Auto size") },
+        { Settings::WindowSizeBehavior::Maximized, QCoreApplication::translate("SettingsDialog", "Maximized") },
+        { Settings::WindowSizeBehavior::Windowed, QCoreApplication::translate("SettingsDialog", "Windowed") }
+    }
+};
+
+static EnumComboBoxTransformer<Qt::HighDpiScaleFactorRoundingPolicy, QString> HIDPI_OPTIONS {
+    {
+        { Qt::HighDpiScaleFactorRoundingPolicy::Round, QCoreApplication::translate("SettingsDialog", "Round (Integer scaling)", "This option means round up for .5 and above") },
+        { Qt::HighDpiScaleFactorRoundingPolicy::Ceil, QCoreApplication::translate("SettingsDialog", "Ceil (Integer scaling)", "This option means always round up") },
+        { Qt::HighDpiScaleFactorRoundingPolicy::Floor, QCoreApplication::translate("SettingsDialog", "Floor (Integer scaling)", "This option means always round down") },
+        { Qt::HighDpiScaleFactorRoundingPolicy::PassThrough, QCoreApplication::translate("SettingsDialog", "Follow system (Fractional scaling)", "This option means don't round") }
+    }
+};
 
 SettingsDialog::SettingsDialog(QWidget *parent)
-    : QDialog(parent)
-    , m_stayOnTop(new QCheckBox)
-    , m_useBuiltInCloseAnimation(new QCheckBox)
-    , m_useLightCheckerboard(new QCheckBox)
-    , m_loopGallery(new QCheckBox)
-    , m_autoLongImageMode(new QCheckBox)
-    , m_svgTiny12Only(new QCheckBox)
-    , m_doubleClickBehavior(new QComboBox)
-    , m_mouseWheelBehavior(new QComboBox)
-    , m_initWindowSizeBehavior(new QComboBox)
-    , m_hiDpiRoundingPolicyBehavior(new QComboBox)
+    : QDialog(parent), ui(new QT_PREPEND_NAMESPACE(Ui::SettingsDialog))
 {
-    this->setWindowTitle(tr("Settings"));
+    ui->setupUi(this);
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
 
-    QHBoxLayout * mainLayout = new QHBoxLayout(this);
-    QTabWidget * settingsTabs = new QTabWidget(this);
-    mainLayout->addWidget(settingsTabs);
-
-    QWidget * settingsFormHolder = new QWidget;
-    QFormLayout * settingsForm = new QFormLayout(settingsFormHolder);
-    settingsTabs->addTab(settingsFormHolder, tr("Options"));
-
-    QSplitter * shortcutEditorSplitter = new QSplitter;
-    shortcutEditorSplitter->setOrientation(Qt::Vertical);
-    shortcutEditorSplitter->setChildrenCollapsible(false);
-    QScrollArea * shortcutScrollArea = new QScrollArea;
-    shortcutEditorSplitter->addWidget(shortcutScrollArea);
-    shortcutScrollArea->setWidgetResizable(true);
-    shortcutScrollArea->setMinimumHeight(200);
-    QWidget * shortcutsFormHolder = new QWidget;
-    QFormLayout * shortcutsForm = new QFormLayout(shortcutsFormHolder);
-    shortcutScrollArea->setWidget(shortcutsFormHolder);
-    settingsTabs->addTab(shortcutEditorSplitter, tr("Shortcuts"));
-
-    for (const QAction * action : parent->actions()) {
-        ShortcutEdit * shortcutEdit = new ShortcutEdit;
-        shortcutEdit->setObjectName(QLatin1String("shortcut_") + action->objectName());
-        shortcutEdit->setShortcuts(action->shortcuts());
-        shortcutsForm->addRow(action->text(), shortcutEdit);
-        connect(shortcutEdit, &ShortcutEdit::editButtonClicked, this, [=](){
-            if (shortcutEditorSplitter->count() == 1) shortcutEditorSplitter->addWidget(new QWidget);
-            ShortcutEditor * shortcutEditor = new ShortcutEditor(shortcutEdit);
-            shortcutEditor->setDescription(tr("Editing shortcuts for action \"%1\":").arg(action->text()));
-            QWidget * oldEditor = shortcutEditorSplitter->replaceWidget(1, shortcutEditor);
-            shortcutEditorSplitter->setSizes({shortcutEditorSplitter->height(), 1});
-            oldEditor->deleteLater();
-        });
-        connect(shortcutEdit, &ShortcutEdit::applyShortcutsRequested, this, [=](QList<QKeySequence> newShortcuts){
-            bool succ = Settings::instance()->setShortcutsForAction(parent, shortcutEdit->objectName().mid(9),
-                                                                    newShortcuts);
-            if (!succ) {
-                QMessageBox::warning(this, tr("Failed to set shortcuts"),
-                                     tr("Please check if shortcuts are duplicated with existing shortcuts."));
-            }
-            shortcutEdit->setShortcuts(action->shortcuts());
-        });
-    }
-
-    static QList< QPair<Settings::DoubleClickBehavior, QString> > _dc_options {
-        { Settings::DoubleClickBehavior::Ignore, tr("Do nothing") },
-        { Settings::DoubleClickBehavior::Close, tr("Close the window") },
-        { Settings::DoubleClickBehavior::Maximize, tr("Toggle maximize") },
-        { Settings::DoubleClickBehavior::FullScreen, tr("Toggle fullscreen") }
-    };
-
-    static QList< QPair<Settings::MouseWheelBehavior, QString> > _mw_options {
-        { Settings::MouseWheelBehavior::Zoom, tr("Zoom in and out") },
-        { Settings::MouseWheelBehavior::Switch, tr("View next or previous item") }
-    };
-
-    static QList< QPair<Settings::WindowSizeBehavior, QString> > _iws_options {
-        { Settings::WindowSizeBehavior::Auto, tr("Auto size") },
-        { Settings::WindowSizeBehavior::Maximized, tr("Maximized") },
-        { Settings::WindowSizeBehavior::Windowed, tr("Windowed") }
-    };
-
-    static QList< QPair<Qt::HighDpiScaleFactorRoundingPolicy, QString> > _hidpi_options {
-        { Qt::HighDpiScaleFactorRoundingPolicy::Round, tr("Round (Integer scaling)", "This option means round up for .5 and above") },
-        { Qt::HighDpiScaleFactorRoundingPolicy::Ceil, tr("Ceil (Integer scaling)", "This option means always round up") },
-        { Qt::HighDpiScaleFactorRoundingPolicy::Floor, tr("Floor (Integer scaling)", "This option means always round down") },
-        { Qt::HighDpiScaleFactorRoundingPolicy::PassThrough, tr("Follow system (Fractional scaling)", "This option means don't round") }
-    };
-
-    QStringList dcbDropDown;
-    for (const QPair<Settings::DoubleClickBehavior, QString> & dcOption : _dc_options) {
-        dcbDropDown.append(dcOption.second);
-    }
-
-    QStringList mwbDropDown;
-    for (const QPair<Settings::MouseWheelBehavior, QString> & mwOption : _mw_options) {
-        mwbDropDown.append(mwOption.second);
-    }
-
-    QStringList iwsbDropDown;
-    for (const QPair<Settings::WindowSizeBehavior, QString> & iwsOption : _iws_options) {
-        iwsbDropDown.append(iwsOption.second);
-    }
-
-    QStringList hidpiDropDown;
-    for (const QPair<Qt::HighDpiScaleFactorRoundingPolicy, QString> & hidpiOption : _hidpi_options) {
-        hidpiDropDown.append(hidpiOption.second);
-    }
-
-    settingsForm->addRow(tr("Stay on top when start-up"), m_stayOnTop);
-    settingsForm->addRow(tr("Use built-in close window animation"), m_useBuiltInCloseAnimation);
-    settingsForm->addRow(tr("Use light-color checkerboard"), m_useLightCheckerboard);
-    settingsForm->addRow(tr("Loop the loaded gallery"), m_loopGallery);
-    settingsForm->addRow(tr("Auto long image mode"), m_autoLongImageMode);
-    settingsForm->addRow(tr("Limit SVG support to SVG Tiny 1.2"), m_svgTiny12Only);
-    settingsForm->addRow(tr("Double-click behavior"), m_doubleClickBehavior);
-    settingsForm->addRow(tr("Mouse wheel behavior"), m_mouseWheelBehavior);
-    settingsForm->addRow(tr("Default window size"), m_initWindowSizeBehavior);
-    settingsForm->addRow(tr("HiDPI scale factor rounding policy"), m_hiDpiRoundingPolicyBehavior);
-
-    m_stayOnTop->setChecked(Settings::instance()->stayOnTop());
-    m_useBuiltInCloseAnimation->setChecked(Settings::instance()->useBuiltInCloseAnimation());
-    m_useLightCheckerboard->setChecked(Settings::instance()->useLightCheckerboard());
-    m_loopGallery->setChecked(Settings::instance()->loopGallery());
-    m_autoLongImageMode->setChecked(Settings::instance()->autoLongImageMode());
-    m_svgTiny12Only->setChecked(Settings::instance()->svgTiny12Only());
-    m_doubleClickBehavior->setModel(new QStringListModel(dcbDropDown));
-    Settings::DoubleClickBehavior dcb = Settings::instance()->doubleClickBehavior();
-    m_doubleClickBehavior->setCurrentIndex(static_cast<int>(dcb));
-    m_mouseWheelBehavior->setModel(new QStringListModel(mwbDropDown));
-    Settings::MouseWheelBehavior mwb = Settings::instance()->mouseWheelBehavior();
-    m_mouseWheelBehavior->setCurrentIndex(static_cast<int>(mwb));
-    m_initWindowSizeBehavior->setModel(new QStringListModel(iwsbDropDown));
-    Settings::WindowSizeBehavior iwsb = Settings::instance()->initWindowSizeBehavior();
-    m_initWindowSizeBehavior->setCurrentIndex(static_cast<int>(iwsb));
-    m_hiDpiRoundingPolicyBehavior->setModel(new QStringListModel(hidpiDropDown));
-    Qt::HighDpiScaleFactorRoundingPolicy hidpi = Settings::instance()->hiDpiScaleFactorBehavior();
-    for (int i = 0; i < _hidpi_options.count(); i++) {
-        if (_hidpi_options.at(i).first == hidpi) {
-            m_hiDpiRoundingPolicyBehavior->setCurrentIndex(i);
-            break;
-        }
-    }
+    auto* settings = Settings::instance();
+    ui->m_useLightCheckerboard->setChecked(settings->useLightCheckerboard());
+    ui->m_loopGallery->setChecked(settings->loopGallery());
+    ui->m_svgTiny12Only->setChecked(settings->svgTiny12Only());
+    ui->m_doubleClickBehavior->setModel(DC_OPTIONS.buildComboBoxModel(this));
+    Settings::DoubleClickBehavior dcb = settings->doubleClickBehavior();
+    ui->m_doubleClickBehavior->setCurrentIndex(DC_OPTIONS.to_index(dcb));
+    ui->m_mouseWheelBehavior->setModel(MW_OPTIONS.buildComboBoxModel(this));
+    Settings::MouseWheelBehavior mwb = settings->mouseWheelBehavior();
+    ui->m_mouseWheelBehavior->setCurrentIndex(MW_OPTIONS.to_index(mwb));
+    ui->m_initWindowSizeBehavior->setModel(IWS_OPTIONS.buildComboBoxModel(this));
+    Settings::WindowSizeBehavior iwsb = settings->initWindowSizeBehavior();
+    ui->m_initWindowSizeBehavior->setCurrentIndex(IWS_OPTIONS.to_index(iwsb));
+    ui->m_hiDpiRoundingPolicyBehavior->setModel(HIDPI_OPTIONS.buildComboBoxModel(this));
+    Qt::HighDpiScaleFactorRoundingPolicy hidpi = settings->hiDpiScaleFactorBehavior();
+    ui->m_hiDpiRoundingPolicyBehavior->setCurrentIndex(HIDPI_OPTIONS.to_index(hidpi));
 
 #if QT_VERSION >= QT_VERSION_CHECK(6, 7, 0)
 # define QCHECKBOX_CHECKSTATECHANGED QCheckBox::checkStateChanged
@@ -164,51 +113,45 @@ SettingsDialog::SettingsDialog(QWidget *parent)
 # define QT_CHECKSTATE int
 #endif // QT_VERSION >= QT_VERSION_CHECK(6, 7, 0)
 
-    connect(m_stayOnTop, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
-        Settings::instance()->setStayOnTop(state == Qt::Checked);
-    });
-
-    connect(m_useBuiltInCloseAnimation, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
-        Settings::instance()->setUseBuiltInCloseAnimation(state == Qt::Checked);
-    });
-
-    connect(m_useLightCheckerboard, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
+    connect(ui->m_useLightCheckerboard, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
         Settings::instance()->setUseLightCheckerboard(state == Qt::Checked);
     });
 
-    connect(m_loopGallery, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
+    connect(ui->m_loopGallery, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
         Settings::instance()->setLoopGallery(state == Qt::Checked);
     });
 
-    connect(m_autoLongImageMode, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
-        Settings::instance()->setAutoLongImageMode(state == Qt::Checked);
-    });
-
-    connect(m_svgTiny12Only, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
+    connect(ui->m_svgTiny12Only, &QCHECKBOX_CHECKSTATECHANGED, this, [ = ](QT_CHECKSTATE state){
         Settings::instance()->setSvgTiny12Only(state == Qt::Checked);
     });
 
-    connect(m_doubleClickBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
-        Settings::instance()->setDoubleClickBehavior(_dc_options.at(index).first);
+    connect(ui->m_doubleClickBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setDoubleClickBehavior(DC_OPTIONS.to_value(index));
     });
 
-    connect(m_mouseWheelBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
-        Settings::instance()->setMouseWheelBehavior(_mw_options.at(index).first);
+    connect(ui->m_mouseWheelBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setMouseWheelBehavior(MW_OPTIONS.to_value(index));
     });
 
-    connect(m_initWindowSizeBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
-        Settings::instance()->setInitWindowSizeBehavior(_iws_options.at(index).first);
+    connect(ui->m_initWindowSizeBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setInitWindowSizeBehavior(IWS_OPTIONS.to_value(index));
     });
 
-    connect(m_hiDpiRoundingPolicyBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
-        Settings::instance()->setHiDpiScaleFactorBehavior(_hidpi_options.at(index).first);
+    connect(ui->m_hiDpiRoundingPolicyBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setHiDpiScaleFactorBehavior(HIDPI_OPTIONS.to_value(index));
     });
 
-    adjustSize();
-    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
+    // YYC MARK:
+    // Use adjustSize() to make sure all ComboBox are expanded by its items.
+    // Because items are added after inserting them into layout.
+    // It is inviable to call this function in ctor because this relys on Qt event system.
+    // It only can be done by QTimer::singleShot().
+    QTimer::singleShot(0, this, [this](){
+        this->adjustSize();
+    });
 }
 
 SettingsDialog::~SettingsDialog()
 {
-
+    delete ui;
 }

app/settingsdialog.h

@@ -5,11 +5,14 @@
 #ifndef SETTINGSDIALOG_H
 #define SETTINGSDIALOG_H
 
-#include <QObject>
 #include <QDialog>
 
-class QCheckBox;
-class QComboBox;
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class SettingsDialog;
+}
+QT_END_NAMESPACE
+
 class SettingsDialog : public QDialog
 {
     Q_OBJECT
@@ -17,21 +20,8 @@ public:
     explicit SettingsDialog(QWidget *parent = nullptr);
     ~SettingsDialog();
 
-signals:
-
-public slots:
-
 private:
-    QCheckBox * m_stayOnTop = nullptr;
-    QCheckBox * m_useBuiltInCloseAnimation = nullptr;
-    QCheckBox * m_useLightCheckerboard = nullptr;
-    QCheckBox * m_loopGallery = nullptr;
-    QCheckBox * m_autoLongImageMode = nullptr;
-    QCheckBox * m_svgTiny12Only = nullptr;
-    QComboBox * m_doubleClickBehavior = nullptr;
-    QComboBox * m_mouseWheelBehavior = nullptr;
-    QComboBox * m_initWindowSizeBehavior = nullptr;
-    QComboBox * m_hiDpiRoundingPolicyBehavior = nullptr;
+    QT_PREPEND_NAMESPACE(Ui::SettingsDialog) *ui;
 };
 
 #endif // SETTINGSDIALOG_H

app/settingsdialog.ui

@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>SettingsDialog</class>
+ <widget class="QDialog" name="SettingsDialog">
+  <property name="windowModality">
+   <enum>Qt::NonModal</enum>
+  </property>
+  <property name="windowTitle">
+   <string>Settings</string>
+  </property>
+  <layout class="QHBoxLayout" name="mainLayout">
+   <item>
+    <widget class="QTabWidget" name="settingsTabs">
+     <property name="currentIndex">
+      <number>0</number>
+     </property>
+     <widget class="QWidget" name="optionsTab">
+      <attribute name="title">
+       <string>Options</string>
+      </attribute>
+      <layout class="QFormLayout" name="settingsForm">
+        <item row="0" column="0" colspan="2">
+         <widget class="QCheckBox" name="m_useLightCheckerboard">
+          <property name="text">
+           <string>Use light-color checkerboard</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0" colspan="2">
+         <widget class="QCheckBox" name="m_loopGallery">
+          <property name="text">
+           <string>Loop the loaded gallery</string>
+          </property>
+         </widget>
+        </item>
+        <item row="2" column="0" colspan="2">
+         <widget class="QCheckBox" name="m_svgTiny12Only">
+          <property name="text">
+           <string>Limit SVG support to SVG Tiny 1.2</string>
+          </property>
+         </widget>
+        </item>
+       <item row="3" column="0">
+         <widget class="QLabel" name="m_doubleClickBehaviorLabel">
+         <property name="text">
+          <string>Double-click behavior</string>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="1">
+        <widget class="QComboBox" name="m_doubleClickBehavior"/>
+       </item>
+       <item row="4" column="0">
+         <widget class="QLabel" name="m_mouseWheelBehaviorLabel">
+         <property name="text">
+          <string>Mouse wheel behavior</string>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="1">
+        <widget class="QComboBox" name="m_mouseWheelBehavior"/>
+       </item>
+       <item row="5" column="0">
+         <widget class="QLabel" name="m_initWindowSizeBehaviorLabel">
+         <property name="text">
+          <string>Default window size</string>
+         </property>
+        </widget>
+       </item>
+       <item row="5" column="1">
+        <widget class="QComboBox" name="m_initWindowSizeBehavior"/>
+       </item>
+       <item row="6" column="0">
+         <widget class="QLabel" name="m_hiDpiRoundingPolicyBehaviorLabel">
+         <property name="text">
+          <string>HiDPI scale factor rounding policy</string>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="1">
+        <widget class="QComboBox" name="m_hiDpiRoundingPolicyBehavior"/>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/shortcutedit.cpp

@@ -1,126 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Gary Wang <opensource@blumia.net>
-//
-// SPDX-License-Identifier: MIT
-
-#include "shortcutedit.h"
-
-#include <QLabel>
-#include <QToolButton>
-#include <QHBoxLayout>
-#include <QFormLayout>
-#include <QDialogButtonBox>
-#include <QKeySequenceEdit>
-
-ShortcutEditor::ShortcutEditor(ShortcutEdit * shortcutEdit, QWidget * parent)
-    : QWidget(parent)
-    , m_descriptionLabel(new QLabel)
-    , m_shortcutEdit(shortcutEdit)
-    , m_shortcutLayout(new QFormLayout)
-{
-    Q_CHECK_PTR(m_shortcutEdit);
-
-    QDialogButtonBox * buttons = new QDialogButtonBox(QDialogButtonBox::Apply | QDialogButtonBox::Discard);
-
-    QVBoxLayout * layout = new QVBoxLayout(this);
-    layout->addWidget(m_descriptionLabel);
-    layout->addLayout(m_shortcutLayout);
-    layout->addWidget(buttons);
-
-    connect(buttons, &QDialogButtonBox::clicked, this, [=](QAbstractButton *button){
-        if ((QPushButton *)button == buttons->button(QDialogButtonBox::Apply)) {
-            applyShortcuts();
-        } else {
-            reloadShortcuts();
-        }
-    });
-    connect(shortcutEdit, &ShortcutEdit::shortcutsChanged, this, &ShortcutEditor::reloadShortcuts);
-
-    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
-
-    reloadShortcuts();
-}
-
-void ShortcutEditor::setDescription(const QString &desc)
-{
-    m_descriptionLabel->setText(desc);
-}
-
-void ShortcutEditor::reloadShortcuts()
-{
-    if (!m_keySequenceEdits.isEmpty()) {
-        for (QKeySequenceEdit * keyseqEdit : m_keySequenceEdits) {
-            m_shortcutLayout->removeRow(keyseqEdit);
-        }
-        m_keySequenceEdits.clear();
-    }
-
-    QList<QKeySequence> shortcuts = m_shortcutEdit->shortcuts();
-    shortcuts.append(QKeySequence());
-    for (const QKeySequence & shortcut : shortcuts) {
-        QKeySequenceEdit * keyseqEdit = new QKeySequenceEdit(this);
-        keyseqEdit->setClearButtonEnabled(true);
-#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
-        keyseqEdit->setMaximumSequenceLength(1);
-#endif // QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
-        keyseqEdit->setKeySequence(shortcut);
-        m_keySequenceEdits.append(keyseqEdit);
-    }
-
-    for (int i = 0; i < m_keySequenceEdits.count(); i++) {
-        m_shortcutLayout->addRow(tr("Shortcut #%1").arg(i + 1), m_keySequenceEdits.at(i));
-    }
-}
-
-void ShortcutEditor::applyShortcuts()
-{
-    QList<QKeySequence> shortcuts;
-    for (const QKeySequenceEdit * keyseqEdit : m_keySequenceEdits) {
-        if (!keyseqEdit->keySequence().isEmpty() && !shortcuts.contains(keyseqEdit->keySequence())) {
-            shortcuts.append(keyseqEdit->keySequence());
-        }
-    }
-    emit m_shortcutEdit->applyShortcutsRequested(shortcuts);
-}
-
-// ----------------------------------------
-
-ShortcutEdit::ShortcutEdit(QWidget *parent)
-    : QWidget(parent)
-    , m_shortcutsLabel(new QLabel(this))
-    , m_setShortcutButton(new QToolButton(this))
-{
-    m_setShortcutButton->setText("...");
-
-    QHBoxLayout * layout = new QHBoxLayout(this);
-    layout->setContentsMargins(0, 0, 0, 0);
-    layout->addWidget(m_shortcutsLabel, 1);
-    layout->addWidget(m_setShortcutButton);
-
-    connect(this, &ShortcutEdit::shortcutsChanged, this, [=](){
-        QStringList shortcutTexts;
-        for (const QKeySequence & shortcut : std::as_const(m_shortcuts)) {
-            shortcutTexts.append(shortcut.toString(QKeySequence::NativeText));
-        }
-        m_shortcutsLabel->setText(shortcutTexts.isEmpty() ? tr("No shortcuts") : shortcutTexts.join(", "));
-        m_shortcutsLabel->setDisabled(shortcutTexts.isEmpty());
-    });
-
-    connect(m_setShortcutButton, &QToolButton::clicked, this, &ShortcutEdit::editButtonClicked);
-
-    adjustSize();
-}
-
-ShortcutEdit::~ShortcutEdit()
-{
-}
-
-QList<QKeySequence> ShortcutEdit::shortcuts() const
-{
-    return m_shortcuts;
-}
-
-void ShortcutEdit::setShortcuts(const QList<QKeySequence> &shortcuts)
-{
-    m_shortcuts = shortcuts;
-    emit shortcutsChanged();
-}

app/shortcutedit.h

@@ -1,55 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Gary Wang <opensource@blumia.net>
-//
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <QWidget>
-#include <QList>
-#include <QKeySequence>
-
-class QLabel;
-class QFormLayout;
-class QToolButton;
-class QKeySequenceEdit;
-class ShortcutEdit;
-class ShortcutEditor : public QWidget
-{
-    Q_OBJECT
-public:
-    explicit ShortcutEditor(ShortcutEdit * shortcutEdit, QWidget * parent = nullptr);
-    ~ShortcutEditor() = default;
-
-    void setDescription(const QString & desc);
-
-    void reloadShortcuts();
-    void applyShortcuts();
-
-private:
-    QLabel * m_descriptionLabel;
-    ShortcutEdit * m_shortcutEdit;
-    QFormLayout * m_shortcutLayout;
-    QList<QKeySequenceEdit *> m_keySequenceEdits;
-};
-
-class ShortcutEdit : public QWidget
-{
-    Q_OBJECT
-    Q_PROPERTY(QList<QKeySequence> shortcuts MEMBER m_shortcuts WRITE setShortcuts NOTIFY shortcutsChanged)
-public:
-    explicit ShortcutEdit(QWidget * parent = nullptr);
-    ~ShortcutEdit();
-
-    QList<QKeySequence> shortcuts() const;
-    void setShortcuts(const QList<QKeySequence> &shortcuts);
-
-signals:
-    void shortcutsChanged();
-    void editButtonClicked();
-    void applyShortcutsRequested(QList<QKeySequence> newShortcuts);
-
-private:
-    QList<QKeySequence> m_shortcuts;
-    QLabel * m_shortcutsLabel;
-    QToolButton * m_setShortcutButton;
-};

app/toolbutton.cpp

@@ -1,38 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#include "toolbutton.h"
-
-#include "actionmanager.h"
-#include "opacityhelper.h"
-
-#include <QPainter>
-#include <QGraphicsOpacityEffect>
-#include <QPropertyAnimation>
-
-ToolButton::ToolButton(bool hoverColor, QWidget *parent)
-    : QPushButton(parent)
-    , m_opacityHelper(new OpacityHelper(this))
-{
-    setFlat(true);
-    QString qss = "QPushButton {"
-                  "background: transparent;"
-                  "}";
-    if (hoverColor) {
-        qss += "QPushButton:hover {"
-               "background: red;"
-               "}";
-    }
-    setStyleSheet(qss);
-}
-
-void ToolButton::setIconResourcePath(const QString &iconp)
-{
-    this->setIcon(ActionManager::loadHidpiIcon(iconp, this->iconSize()));
-}
-
-void ToolButton::setOpacity(qreal opacity, bool animated)
-{
-    m_opacityHelper->setOpacity(opacity, animated);
-}

app/toolbutton.h

@@ -1,25 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#ifndef TOOLBUTTON_H
-#define TOOLBUTTON_H
-
-#include <QPushButton>
-
-class OpacityHelper;
-class ToolButton : public QPushButton
-{
-    Q_OBJECT
-public:
-    ToolButton(bool hoverColor = false, QWidget * parent = nullptr);
-    void setIconResourcePath(const QString &iconp);
-
-public slots:
-    void setOpacity(qreal opacity, bool animated = true);
-
-private:
-    OpacityHelper * m_opacityHelper;
-};
-
-#endif // TOOLBUTTON_H

app/translations/PineapplePictures_ko.ts

@@ -236,27 +236,27 @@
         <location filename="../mainwindow.cpp" line="734"/>
         <location filename="../mainwindow.cpp" line="764"/>
         <source>Save As</source>
-        <translation type="unfinished"></translation>
+        <translation>다른 이름으로 저장</translation>
     </message>
     <message>
         <location filename="../mainwindow.cpp" line="710"/>
         <source>No image is currently open.</source>
-        <translation type="unfinished"></translation>
+        <translation>현재 열려 있는 이미지가 없습니다.</translation>
     </message>
     <message>
         <location filename="../mainwindow.cpp" line="722"/>
         <source>%1 Image (*.%2)</source>
-        <translation type="unfinished"></translation>
+        <translation>%1 이미지 (*.%2)</translation>
     </message>
     <message>
         <location filename="../mainwindow.cpp" line="728"/>
         <source>No supported image formats are available.</source>
-        <translation type="unfinished"></translation>
+        <translation>지원되는 이미지 형식을 사용할 수 없습니다.</translation>
     </message>
     <message>
         <location filename="../mainwindow.cpp" line="765"/>
         <source>Failed to save image: %1</source>
-        <translation type="unfinished"></translation>
+        <translation>이미지 저장 실패: %1</translation>
     </message>
     <message>
         <location filename="../mainwindow.cpp" line="854"/>
@@ -320,7 +320,7 @@
     <message>
         <location filename="../actionmanager.cpp" line="88"/>
         <source>Save &amp;As...</source>
-        <translation type="unfinished"></translation>
+        <translation>다른 이름으로 저장(&amp;A)...</translation>
     </message>
     <message>
         <location filename="../actionmanager.cpp" line="93"/>

appveyor.yml

@@ -1,158 +0,0 @@
-image:
-  - Visual Studio 2022
-environment:
-  CMAKE_INSTALL_PREFIX: C:\projects\cmake
-  LIBZ: C:\projects\zlib
-  LIBEXPAT: C:\projects\libexpat
-  LIBAVIF: C:\projects\libavif
-  LIBEXIV2: C:\projects\exiv2
-  PPKG: C:\projects\ppkg
-  matrix:
-    - job_name: mingw_64_qt6_8
-      QTDIR: C:\Qt\6.8\mingw_64
-      MINGW64: C:\Qt\mingw_64\Tools\mingw1310_64
-      KF_BRANCH: v6.24.0
-      EXIV2_VERSION: "0.28.7"
-      EXIV2_CMAKE_OPTIONS: "-DEXIV2_ENABLE_BROTLI=OFF -DEXIV2_ENABLE_INIH=OFF -DEXIV2_BUILD_EXIV2_COMMAND=OFF"
-      PPIC_CMAKE_OPTIONS: "-DPREFER_QT_5=OFF"
-      WINDEPLOYQT_ARGS: "--verbose=2 --no-quick-import --no-translations --no-opengl-sw --no-system-d3d-compiler --skip-plugin-types tls,networkinformation"
-
-install:
-  - mkdir %CMAKE_INSTALL_PREFIX%
-  - mkdir %LIBZ%
-  - mkdir %LIBEXPAT%
-  - mkdir %LIBAVIF%
-  - mkdir %LIBEXIV2%
-  - mkdir %PPKG%
-  - cd %APPVEYOR_BUILD_FOLDER%
-  - git submodule update --init --recursive
-  - set PATH=%PATH%;%CMAKE_INSTALL_PREFIX%;%QTDIR%\bin;%MINGW64%\bin;%PPKG%
-  - set CC=%MINGW64%\bin\gcc.exe
-  - set CXX=%MINGW64%\bin\g++.exe
-
-build_script:
-# prepare
-  - mkdir 3rdparty
-  - choco install ninja
-  - cd %PPKG%
-  - curl -fsSL -o ppkg.exe https://github.com/BLumia/pineapple-package-manager/releases/latest/download/ppkg.exe
-  - cd %APPVEYOR_BUILD_FOLDER%
-# download and install zlib for KArchive
-  - cd %LIBZ%
-  - curl -fsSL -o zlib132.zip https://zlib.net/zlib132.zip
-  - 7z x zlib132.zip -y
-  - cd zlib-1.3.2
-  - mkdir build
-  - cd build
-  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX%
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# install ECM so we can build KImageFormats
-  - cd 3rdparty
-  - git clone -b %KF_BRANCH% -q https://invent.kde.org/frameworks/extra-cmake-modules.git
-  - git rev-parse HEAD
-  - cd extra-cmake-modules
-  - cmake -G "Ninja" . -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DBUILD_TESTING=OFF
-  - cmake --build .
-  - cmake --build . --target install
-  - cd %APPVEYOR_BUILD_FOLDER%
-# install AOM for libavif AV1 decoding support...
-  - cd 3rdparty
-  #- git clone -b v3.9.1 --depth 1 https://aomedia.googlesource.com/aom
-  #- cd aom
-  #- mkdir build.aom
-  #- cd build.aom
-  #- cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DENABLE_DOCS=OFF -DBUILD_SHARED_LIBS=ON -DAOM_TARGET_CPU=generic -DENABLE_TESTS=OFF -DENABLE_TESTDATA=OFF -DENABLE_TOOLS=OFF -DENABLE_EXAMPLES=0
-  #- cmake --build . --config Release
-  #- cmake --build . --config Release --target install/strip
-  - mkdir aom
-  - cd aom
-  - curl -fsSL -o ppkg-aom.zip https://sourceforge.net/projects/pineapple-package-manager/files/packages/mingw-w64-x86_64-windows/aom-3.9.1-2.zip
-  - ppkg ppkg-aom.zip
-  - 7z x ppkg-aom.zip LICENSE -y
-  - cd %APPVEYOR_BUILD_FOLDER%
-# install libavif for avif format support of KImageFormats
-  - cd %LIBAVIF%
-  - curl -fsSL -o libavif-v1_3_0.zip https://github.com/AOMediaCodec/libavif/archive/v1.3.0.zip
-  - 7z x libavif-v1_3_0.zip -y
-  - cd libavif-1.3.0
-  - mkdir build
-  - cd build
-  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DAVIF_CODEC_AOM=SYSTEM -DAVIF_CODEC_AOM_DECODE=ON -DAVIF_CODEC_AOM_ENCODE=ON -DAVIF_LIBYUV=LOCAL
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# install KArchive for kra format support of KImageFormats
-  - cd 3rdparty
-  - git clone -b %KF_BRANCH% -q https://invent.kde.org/frameworks/karchive.git
-  - git rev-parse HEAD
-  - cd karchive
-  - mkdir build
-  - cd build
-  - cmake .. -G "Ninja" -DBUILD_TESTING=OFF -DWITH_LIBZSTD=OFF -DWITH_BZIP2=OFF -DWITH_LIBLZMA=OFF -DWITH_OPENSSL=OFF -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX%
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# build libexpat for libexiv2
-  - cd %LIBEXPAT%
-  - curl -fsSL -o R_2_7_3.zip https://github.com/libexpat/libexpat/archive/R_2_7_3.zip
-  - 7z x R_2_7_3.zip -y
-  - cd libexpat-R_2_7_3/expat/
-  - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DEXPAT_BUILD_EXAMPLES=OFF -DEXPAT_BUILD_TESTS=OFF -DEXPAT_BUILD_TOOLS=OFF
-  - cmake --build . --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# build libexiv2
-  - cd %LIBEXIV2%
-  - curl -fsSL -o v%EXIV2_VERSION%.zip https://github.com/Exiv2/exiv2/archive/v%EXIV2_VERSION%.zip
-  - 7z x v%EXIV2_VERSION%.zip -y
-  - cd exiv2-%EXIV2_VERSION%
-  - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% %EXIV2_CMAKE_OPTIONS%
-  - cmake --build . --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# install KImageFormats
-  - cd 3rdparty
-  - git clone -b %KF_BRANCH% -q https://invent.kde.org/frameworks/kimageformats.git
-  - git rev-parse HEAD
-  - cd kimageformats
-  - mkdir build
-  - cd build
-  - cmake .. -G "Ninja" -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release -DKDE_INSTALL_QTPLUGINDIR=%QTDIR%\plugins
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install/strip
-  - cd %APPVEYOR_BUILD_FOLDER%
-# finally...
-  - mkdir build
-  - cd build
-  - cmake .. -G "Ninja" %PPIC_CMAKE_OPTIONS% -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=%CMAKE_INSTALL_PREFIX% -DCMAKE_INSTALL_PREFIX='%cd%'
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install/strip
-# fixme: I don't know how to NOT make the binary installed to the ./bin/ folder...
-  - cd bin
-  - copy %APPVEYOR_BUILD_FOLDER%\LICENSE
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libaom.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libexpat-1.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libexiv2.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libavif.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libz.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libKF?Archive.dll
-  - windeployqt %WINDEPLOYQT_ARGS% .\ppic.exe
-# copy 3rdparty licenses for the libs we vendored for windows...
-  - mkdir licenses
-  - cd licenses
-  - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\aom\LICENSE License.aom.txt
-  - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\karchive\LICENSES\LGPL-2.0-or-later.txt License.KArchive.txt
-  - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\kimageformats\LICENSES\LGPL-2.1-or-later.txt License.kimageformats.txt
-  - copy %LIBEXPAT%\libexpat-R_2_7_3\expat\COPYING License.expat.txt
-  - copy %LIBAVIF%\libavif-1.3.0\LICENSE License.libavif.txt
-  - copy %LIBEXIV2%\exiv2-%EXIV2_VERSION%\COPYING License.exiv2.txt
-# TODO: Qt, zlib
-  - cd ..
-# for debug..
-  - tree /f
-  - cd %APPVEYOR_BUILD_FOLDER%
-  - xcopy %CMAKE_INSTALL_PREFIX% .\cmake-prefix-copy /E /H /C /I
-
-artifacts:
-  - path: build\bin
-  - path: cmake-prefix-copy

assets/plain/about.html

@@ -0,0 +1,29 @@
+<center>
+    <p>
+        <img width='128' height='128' src=':/icons/app-icon.svg'/>
+        <br/>
+        <!-- Application name -->
+        <span>%1</span>
+        <br/>
+        <!-- Version info -->
+        <span>%2</span>
+    </p>
+    <hr/>
+    <p>
+        <!-- Upstream author and fork author -->
+        <span>%3</span><span>:&nbsp;</span><a href='https://github.com/BLumia'>@BLumia</a>
+        <br/>
+        <span>%4</span><span>:&nbsp;</span><a href='https://github.com/yyc12345'>@yyc12345</a>
+        <br/>
+        <!-- Icon author -->
+        <span>%5</span><span>:&nbsp;</span><a href='https://github.com/Lovelyblack'>@Lovelyblack</a>
+    </p>
+    <hr/>
+    <p>
+        <!-- Built Qt version info -->
+        <span>%6</span>
+        <br/>
+        <!-- Source code -->
+        <span>%7</span><span>:&nbsp;</span><a href='https://github.com/BLumia/pineapple-pictures'>GitHub</a>
+    </p>
+</center>

assets/plain/help.html

@@ -0,0 +1,29 @@
+<!-- General help -->
+<h1 align='center'>%1</h1>
+<ul>
+    <li>
+        <span>%2</span>
+        <ul>
+            <li>%3</li>
+            <li>%4</li>
+        </ul>
+    </li>
+    <li>%5</li>
+    <li>%6</li>
+</ul>
+<hr/>
+<!-- Context menu option help -->
+<h1 align='center'>%7</h1>
+<!-- Context menu option list -->
+<ul>
+    <li>
+        <b>%8</b><span>:</span>
+        <br/>
+        <span>%9</span>
+    </li>
+    <li>
+        <b>%10</b><span>:</span>
+        <br/>
+        <span>%11</span>
+    </li>
+</ul>

assets/plain/license.html

@@ -0,0 +1,29 @@
+<!-- License -->
+<h1 align='center'><b>%1</b></h1>
+<p>%2</p>
+<hr/>
+<!-- VErbatime license -->
+<h1 align='center'><b>%3</b></h1>
+<pre>
+Expat/MIT License
+
+Copyright &copy; 2026 BLumia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+</pre>

assets/plain/special-thanks.html

@@ -1,3 +1,14 @@
+<!-- Contributor title -->
+<h1 align='center'>%1</h1>
+<!-- Contributor list -->
+<a href='https://github.com/BLumia/pineapple-pictures/graphs/contributors'>%2</a>
+<!-- The message to thank these contributors -->
+<p>%3</p>
+
+<!-- Translator title -->
+<h1 align='center'>%4</h1>
+<!-- The message to thank these translators -->
+<p>%5</p>
 <ul>
 <li><u>Catalan</u>: Toni Estévez</li>
 <li><u>Chinese (Simplified)</u>: Percy Hong</li>

assets/plain/third-party-libs.html

@@ -0,0 +1,15 @@
+<!-- Title -->
+<h1 align='center'><b>%1</b></h1>
+<!-- List intro message -->
+<p>%2</p>
+<p>%3</p>
+<ul>
+    <li>
+        <a href='https://www.qt.io/'>Qt</a><span>: </span>
+        <span>GPLv2 + GPLv3 + LGPLv2.1 + LGPLv3</span>
+    </li>
+    <li style="display: none;">
+        <a href='https://www.exiv2.org/'>Exiv2</a><span>: </span>
+        <span>GPLv2</span>
+    </li>
+</ul>

assets/resources.qrc

@@ -10,6 +10,10 @@
         <file>icons/window-close.svg</file>
         <file>icons/go-next.svg</file>
         <file>icons/go-previous.svg</file>
-        <file>plain/translators.html</file>
+        <file>plain/help.html</file>
+        <file>plain/about.html</file>
+        <file>plain/special-thanks.html</file>
+        <file>plain/license.html</file>
+        <file>plain/third-party-libs.html</file>
     </qresource>
 </RCC>

dist/appstream/net.blumia.pineapple-pictures.metainfo.xml

@@ -53,6 +53,7 @@
   <url type="bugtracker">https://github.com/BLumia/pineapple-pictures/issues</url>
   <url type="donation">https://ko-fi.com/blumia</url>
   <url type="translate">https://hosted.weblate.org/projects/pineapple-pictures/</url>
+  <url type="vcs-browser">https://github.com/BLumia/pineapple-pictures</url>
   <provides>
     <binary>ppic</binary>
   </provides>
@@ -101,6 +102,26 @@
     </screenshot>
   </screenshots>
   <releases>
+    <release type="stable" version="1.5.0" date="2026-07-04T00:00:00Z">
+      <description>
+        <p>This release adds the following features:</p>
+        <ul>
+          <li>Introduced an optional titlebar that display file name and allows drag and double-click to move and toggle maximize state</li>
+          <li>Windows: Now the application will use the system's built-in animation for open window animation</li>
+        </ul>
+        <p>This release fixes the following bug:</p>
+        <ul>
+          <li>Show empty url list should also reset window title to blank</li>
+        </ul>
+        <p>This release includes the following changes:</p>
+        <ul>
+          <li>Update translations</li>
+          <li>Add vcs-browser link to AppStream metadata</li>
+        </ul>
+        <p>With contributions from:</p>
+        <p>Heimen Stoffels (vistaus), VenusGirl (VenusGirl)</p>
+      </description>
+    </release>
     <release type="stable" version="1.4.1" date="2026-04-05T00:00:00Z">
       <description>
         <p>This release includes the following changes:</p>

dist/passoc/ppic.pacfg

@@ -1,118 +0,0 @@
-targetApp=ppic.exe
-friendlyAppName=Pineapple Pictures
-friendlyAppName[zh_CN]=菠萝看图
-openCommand="\"{targetAppFullPath}\" \"%1\""
-
-[ProgId/jpeg]
-name=JPEG Image
-name[zh_CN]=JPEG 图像
-extensions=jpg,jpeg,jfif
-
-[ProgId/gif]
-name=GIF Animation Image
-name[zh_CN]=GIF 动图
-
-[ProgId/png]
-name=PNG Image
-name[zh_CN]=PNG 图像
-
-[ProgId/svg]
-name=Scalable Vector Graphics
-name[zh_CN]=可缩放矢量图像
-
-[ProgId/webp]
-name=WebP Image
-name[zh_CN]=WebP 图像
-extensions=webp
-
-[ProgId/avif]
-name=AV1 Image File
-name[zh_CN]=AV1 图像文件
-
-[ProgId/ico]
-name=Windows Icon Image
-name[zh_CN]=Windows 图标图像
-
-[ProgId/icns]
-name=Apple Icon Image
-name[zh_CN]=苹果图标图像
-
-[ProgId/psd]
-name=Photoshop Document
-name[zh_CN]=Photoshop 文档
-extensions=psd,psb,pdd,psdt
-
-[ProgId/kra]
-name=Krita Document
-name[zh_CN]=Krita 文档
-
-[ProgId/xcf]
-name=GIMP Document
-name[zh_CN]=GIMP 文档
-
-[ProgId/tga]
-name=TARGA Image
-name[zh_CN]=TARGA 图像
-
-[ProgId/tif]
-name=Tagged Image File Format
-name[zh_CN]=标签图像文件格式
-extensions=tif,tiff
-
-[ProgId/bmp]
-name=Bitmap
-name[zh_CN]=位图
-
-[ProgId/wbmp]
-name=Wireless Bitmap
-name[zh_CN]=无线位图
-
-[ProgId/dds]
-name=DirectDraw Surface
-
-[ProgId/hdr]
-name=High Dynamic Range Image
-name[zh_CN]=高动态范围图像
-
-[ProgId/iff]
-name=Interchange File Format
-name[zh_CN]=可交换文件格式
-
-[ProgId/pic]
-name=Softimage Picture
-name[zh_CN]=Softimage 图像
-
-[ProgId/pcx]
-name=PiCture eXchange PC Paintbrush Image
-name[zh_CN]=PC Paintbrush 图像
-
-[ProgId/qoi]
-name=Quite OK Image
-name[zh_CN]=挺 OK 图像
-
-[ProgId/ras]
-name=Sun Raster Image
-name[zh_CN]=Sun 栅格图象
-extensions=ras,sun
-
-[ProgId/ora]
-name=OpenRaster Image
-name[zh_CN]=OpenRaster 图象
-
-[ProgId/ani]
-name=Animated Cursor
-name[zh_CN]=动态光标
-
-[ProgId/pfm]
-name=Portable Float Map
-extensions=pfm,phm
-
-[ProgId/rgb]
-name=Silicon Graphics Image
-extensions=rgb,rgba,bw,sgi
-
-[ProgId/pxr]
-name=Pixar Raster Image
-
-[ProgId/sct]
-name=Scitex Continuous Tone

pineapple-pictures.pro

@@ -1,101 +0,0 @@
-# SPDX-FileCopyrightText: 2025 Gary Wang <git@blumia.net>
-#
-# SPDX-License-Identifier: MIT
-
-QT       += core widgets gui svg svgwidgets
-
-TARGET = ppic
-TEMPLATE = app
-DEFINES += PPIC_VERSION_STRING=\\\"x.y.z\\\"
-
-win32 {
-    DEFINES += FLAG_PORTABLE_MODE_SUPPORT=1
-}
-
-# The following define makes your compiler emit warnings if you use
-# any feature of Qt which has been marked as deprecated (the exact warnings
-# depend on your compiler). Please consult the documentation of the
-# deprecated API in order to know how to port your code away from it.
-DEFINES += QT_DEPRECATED_WARNINGS
-
-# You can also make your code fail to compile if you use deprecated APIs.
-# In order to do so, uncomment the following line.
-# You can also select to disable deprecated APIs only up to a certain version of Qt.
-#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
-
-CONFIG += c++17 lrelease embed_translations
-
-SOURCES += \
-    app/aboutdialog.cpp \
-    app/main.cpp \
-    app/framelesswindow.cpp \
-    app/mainwindow.cpp \
-    app/graphicsview.cpp \
-    app/bottombuttongroup.cpp \
-    app/graphicsscene.cpp \
-    app/navigatorview.cpp \
-    app/opacityhelper.cpp \
-    app/toolbutton.cpp \
-    app/settings.cpp \
-    app/settingsdialog.cpp \
-    app/metadatamodel.cpp \
-    app/metadatadialog.cpp \
-    app/exiv2wrapper.cpp \
-    app/actionmanager.cpp \
-    app/playlistmanager.cpp \
-    app/shortcutedit.cpp \
-    app/fileopeneventhandler.cpp
-
-HEADERS += \
-    app/aboutdialog.h \
-    app/framelesswindow.h \
-    app/mainwindow.h \
-    app/graphicsview.h \
-    app/bottombuttongroup.h \
-    app/graphicsscene.h \
-    app/navigatorview.h \
-    app/opacityhelper.h \
-    app/toolbutton.h \
-    app/settings.h \
-    app/settingsdialog.h \
-    app/metadatamodel.h \
-    app/metadatadialog.h \
-    app/exiv2wrapper.h \
-    app/actionmanager.h \
-    app/playlistmanager.h \
-    app/shortcutedit.h \
-    app/fileopeneventhandler.h
-
-TRANSLATIONS = \
-    app/translations/PineapplePictures_en.ts \
-    app/translations/PineapplePictures_zh_CN.ts \
-    app/translations/PineapplePictures_de.ts \
-    app/translations/PineapplePictures_es.ts \
-    app/translations/PineapplePictures_fr.ts \
-    app/translations/PineapplePictures_nb_NO.ts \
-    app/translations/PineapplePictures_nl.ts \
-    app/translations/PineapplePictures_ru.ts \
-    app/translations/PineapplePictures_si.ts \
-    app/translations/PineapplePictures_id.ts
-
-# Default rules for deployment.
-qnx: target.path = /tmp/$${TARGET}/bin
-else: unix:!android: target.path = /opt/$${TARGET}/bin
-!isEmpty(target.path): INSTALLS += target
-
-RESOURCES += \
-    assets/resources.qrc
-
-# Generate from svg:
-# magick -density 512x512 -background none app-icon.svg -define icon:auto-resize app-icon.ico
-RC_ICONS = assets/icons/app-icon.ico
-
-# Windows only, for rc file (we're not going to use the .rc file in this repo)
-QMAKE_TARGET_PRODUCT = Pineapple Pictures
-QMAKE_TARGET_DESCRIPTION = Pineapple Pictures - Image Viewer
-QMAKE_TARGET_COPYRIGHT = MIT/Expat License - Copyright (C) 2024 Gary Wang
-
-# MSVC only, since QMake doesn't have a CMAKE_CXX_STANDARD_LIBRARIES or cpp_winlibs similar thing
-win32-msvc* {
-    LIBS += -luser32
-}