fix: cannot load images under WSL2 network location

workaround resolve GH-7
feat(i18n): add zh_CN translation for .desktop file
2020-08-28 15:25:07 +08:00 · 2020-08-26 19:06:41 +08:00 · 2020-08-23 23:46:12 +08:00 · 2020-08-13 19:45:38 +08:00 · 2020-08-11 09:08:31 +08:00 · 2020-08-10 23:41:59 +08:00
29 changed files with 1730 additions and 201 deletions
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@ -0,0 +1,17 @@
+name: macOS CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Qt
+      uses: jurplel/install-qt-action@v2.2.1
+    - name: Run a qt project
+      run: |
+        cmake ./
+        make
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@ -0,0 +1,24 @@
+name: Ubuntu 20.04 CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Get build dept.
+      run: sudo apt install cmake qtbase5-dev libqt5svg5-dev qttools5-dev
+    - name: Build it
+      run: |
+        mkdir build
+        cd build
+        cmake ../
+        make
+        cpack -G DEB
+    - uses: actions/upload-artifact@v2
+      with:
+        name: ubuntu-20.04-deb-package
+        path: build/*.deb
--- a/.gitignore
+++ b/.gitignore
@ -3,3 +3,6 @@

 # Translation files
 *.qm
+
+# Generic Build Dir
+[Bb]uild/
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -0,0 +1,198 @@
+project (pineapple-pictures)
+
+cmake_minimum_required (VERSION 3.9.5)
+
+include (GNUInstallDirs)
+include (FeatureSummary)
+
+set (CMAKE_AUTOMOC ON)
+set (CMAKE_AUTORCC ON)
+set (QT_MINIMUM_VERSION "5.10")
+
+find_package(Qt5 ${QT_MINIMUM_VERSION} CONFIG REQUIRED Widgets Svg LinguistTools)
+
+set (PPIC_CPP_FILES
+    main.cpp
+    mainwindow.cpp
+    graphicsview.cpp
+    graphicsscene.cpp
+    bottombuttongroup.cpp
+    navigatorview.cpp
+    opacityhelper.cpp
+    toolbutton.cpp
+    settings.cpp
+    settingsdialog.cpp
+)
+
+set (PPIC_HEADER_FILES
+    mainwindow.h
+    graphicsview.h
+    graphicsscene.h
+    bottombuttongroup.h
+    navigatorview.h
+    opacityhelper.h
+    toolbutton.h
+    settings.h
+    settingsdialog.h
+)
+
+set (PPIC_QRC_FILES
+    resources.qrc
+)
+
+set (PPIC_RC_FILES
+    # yeah, it's empty.
+)
+
+set (EXE_NAME ppic)
+
+# Translation
+file (GLOB PPIC_TS_FILES languages/*.ts)
+set (PPIC_CPP_FILES_FOR_I18N ${PPIC_CPP_FILES})
+
+qt5_create_translation(PPIC_QM_FILES ${PPIC_CPP_FILES_FOR_I18N} ${PPIC_TS_FILES})
+
+if (WIN32)
+    list(APPEND PPIC_RC_FILES pineapple-pictures.rc)
+endif ()
+
+add_executable (${EXE_NAME}
+    ${PPIC_HEADER_FILES}
+    ${PPIC_CPP_FILES}
+    ${PPIC_QRC_FILES}
+    ${PPIC_RC_FILES}
+    ${PPIC_QM_FILES}
+)
+
+target_link_libraries (${EXE_NAME} Qt5::Widgets Qt5::Svg)
+
+# Extra build settings
+if (WIN32)
+    set_property (
+        TARGET ${EXE_NAME}
+        PROPERTY WIN32_EXECUTABLE true
+    )
+
+    target_compile_definitions(${EXE_NAME} PRIVATE
+        FLAG_PORTABLE_MODE_SUPPORT=1
+    )
+endif ()
+
+# Helper macros for parsing and setting project version from `git describe --long` result
+macro (ppic_set_version_via_describe _describe_long)
+    string (
+        REGEX REPLACE
+        "^([0-9a-z.]*)-[0-9]+-g[0-9a-f]*$"
+        "\\1"
+        _tag_parts
+        "${_describe_long}"
+    )
+    list (GET _tag_parts 0 _matched_tag_version)
+    if ("${_matched_tag_version}" MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+$")
+        string (
+            REGEX REPLACE
+            "^([0-9]+)\\.([0-9]+)\\.([0-9]+).*$"
+            "\\1;\\2;\\3"
+            _ver_parts
+            "${_matched_tag_version}"
+        )
+        list (GET _ver_parts 0 CPACK_PACKAGE_VERSION_MAJOR)
+        list (GET _ver_parts 1 CPACK_PACKAGE_VERSION_MINOR)
+        list (GET _ver_parts 2 CPACK_PACKAGE_VERSION_PATCH)
+    endif ()
+endmacro ()
+
+# Version setup
+if (EXISTS "${CMAKE_SOURCE_DIR}/.git")
+    find_package(Git)
+    set_package_properties(Git PROPERTIES TYPE OPTIONAL PURPOSE "Determine exact build version.")
+    if (GIT_FOUND)
+        execute_process (
+            COMMAND ${GIT_EXECUTABLE} describe --tags --always --long
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+            OUTPUT_VARIABLE _git_describe_long
+        )
+        string (REGEX REPLACE "\n" "" _git_describe_long "${_git_describe_long}")
+        ppic_set_version_via_describe(${_git_describe_long})
+    endif ()
+endif ()
+
+# Helper macros for install settings
+macro (ppic_convert_to_relative_path _var)
+    # Make sure _var is a relative path
+    if (IS_ABSOLUTE "${${_var}}")
+        file (RELATIVE_PATH ${_var} "${CMAKE_INSTALL_PREFIX}" "${${_var}}")
+    endif ()
+endmacro ()
+
+# Install settings
+if (WIN32)
+    # FIXME: try to avoid install to a "bin" subfolder under windows...
+    #        when fixed, don't forget to update the CI config file...
+    set (BIN_INSTALL_DIR "") # seems useless, don't know why...
+elseif (UNIX)
+    if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+        set(CMAKE_INSTALL_PREFIX /usr)
+    endif ()
+
+    set (BIN_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}") # relative, usually "bin"
+    ppic_convert_to_relative_path(BIN_INSTALL_DIR)
+    set (LIB_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}") # "lib" or "lib64"
+    ppic_convert_to_relative_path(LIB_INSTALL_DIR)
+
+    # install icon
+    install (
+        FILES icons/app-icon.svg
+        DESTINATION "${CMAKE_INSTALL_DATADIR}/icons/hicolor/48x48/apps"
+        RENAME pineapple-pictures.svg
+    )
+
+    # install shortcut
+    install (
+        FILES pineapple-pictures.desktop
+        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/applications"
+    )
+endif()
+
+set (INSTALL_TARGETS_DEFAULT_ARGS
+    RUNTIME DESTINATION ${BIN_INSTALL_DIR}
+    LIBRARY DESTINATION ${LIB_INSTALL_DIR}
+    ARCHIVE DESTINATION ${LIB_INSTALL_DIR} COMPONENT Devel
+)
+
+install (
+    TARGETS ${EXE_NAME}
+    ${INSTALL_TARGETS_DEFAULT_ARGS}
+)
+
+if (WIN32)
+    set (QM_FILE_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}/translations")
+else ()
+    set (QM_FILE_INSTALL_DIR "${CMAKE_INSTALL_FULL_DATADIR}/pineapple-pictures/translations")
+    target_compile_definitions(${EXE_NAME}
+        PRIVATE QM_FILE_INSTALL_DIR=${QM_FILE_INSTALL_DIR}
+    )
+endif ()
+
+install (
+    FILES ${PPIC_QM_FILES}
+    DESTINATION ${QM_FILE_INSTALL_DIR}
+)
+
+# CPACK: General Settings
+set (CPACK_GENERATOR "TBZ2")
+set (CPACK_PACKAGE_NAME "pineapple-pictures")
+set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Yet another image viewer")
+set (CPACK_PACKAGE_VENDOR "Gary Wang")
+set (CPACK_PACKAGE_CONTACT "https://github.com/BLumia/PineapplePictures/issues/")
+if (WIN32)
+    # ...
+elseif (APPLE)
+    # ...
+elseif (UNIX)
+    set (CPACK_SYSTEM_NAME "${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+    set (CPACK_DEBIAN_PACKAGE_DEPENDS "libqt5svg5")
+    set (CPACK_DEBIAN_PACKAGE_RECOMMENDS "kimageformat-plugins")
+endif()
+
+include(CPack)
--- a/PineapplePictures.pro
+++ b/PineapplePictures.pro
@ -32,7 +32,9 @@ SOURCES += \
    graphicsscene.cpp \
    navigatorview.cpp \
    opacityhelper.cpp \
-    toolbutton.cpp
+    toolbutton.cpp \
+    settings.cpp \
+    settingsdialog.cpp

 HEADERS += \
        mainwindow.h \
@ -41,7 +43,9 @@ HEADERS += \
    graphicsscene.h \
    navigatorview.h \
    opacityhelper.h \
-    toolbutton.h
+    toolbutton.h \
+    settings.h \
+    settingsdialog.h

 TRANSLATIONS = \
    languages/PineapplePictures.ts \
@ -55,6 +59,6 @@ else: unix:!android: target.path = /opt/$${TARGET}/bin
 RESOURCES += \
    resources.qrc

-# Generate fron svg:
-# magick convert -background none ./app-icon.svg -define icon:auto-resize=64,48,32,16 app-icon.ico
+# Generate from svg:
+# magick convert -background none app-icon.svg -define icon:auto-resize="16,32,48,64,128,256" app-icon.ico
 RC_ICONS = icons/app-icon.ico
--- a/README.md
+++ b/README.md
@ -1,11 +1,66 @@
 Yet another image viewer.

-## Uncleaned shits inside(TM):
+|CI|Build Status|
+|---|---|
+|Windows Build|[![Windows build status](https://ci.appveyor.com/api/projects/status/dbd8clww3cit6oa0/branch/master?svg=true)](https://ci.appveyor.com/project/BLumia/pineapplepictures/branch/master)|
+|macOS Build|![macOS CI](https://github.com/BLumia/pineapple-pictures/workflows/macOS%20CI/badge.svg)|
+|Ubuntu 20.04 Build|![Ubuntu 20.04 CI](https://github.com/BLumia/pineapple-pictures/workflows/Ubuntu%2020.04%20CI/badge.svg)|

- - Mixed `CR LF` and `LF`.
- - Ugly action icons.
- - For windows build, win32 APIs are used.
- - No drag-window-border-to-resize support under non-windows platforms (I use <kbd>Meta+Drag</kbd> to resize window under my x11 desktop).
+![Pineapple Pictures - Main Window](https://repository-images.githubusercontent.com/211888654/21fb6300-269f-11ea-8e85-953e5d57da44)
+
+## Get it!
+
+ - [GitHub Release Page](https://github.com/BLumia/pineapple-pictures/releases)
+ - Archlinux AUR: [pineapple-pictures-git](https://aur.archlinux.org/packages/pineapple-pictures-git/)
+
+## Build it manually:
+
+Current state, we need:
+
+ - `cmake`: as the build system.
+ - `qt5` with `qt5-svg` and `qt5-tools`: since the app is using Qt.
+
+Then we can build it with any proper c++ compiler like g++ or msvc.
+
+Building it just requires normal cmake building steps:
+
+``` bash
+$ mkdir build && cd build
+$ cmake ..
+$ cmake --build . # or simply using `make` if you are using Makefile as the cmake generator.
+```
+
+After that, a `ppic` executable file will be available to use. You can also optionally install it by using the target `install` (or simply `make install` in case you are using Makefile). After the build process, you can also use `cpack` to make a package.
+
+Image formats supports rely on Qt's imageformats plugins, just get the plugins you need from your distro's package manager will be fine. For Windows user, you may need build and install the imageformats plugin manually, read the content below.
+
+### Linux
+
+Just normal build process as other program will be fine. Nothing special ;)
+
+For Archlinux there are also a [PKGBUILD](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=pineapple-pictures-git) you can use.
+
+For packaging to debian-based distro, the `CMakeLists.txt` provides some cpack configurations for generating a `.deb` package. After the build process, use `cpack -G DEB` to generate the package. You can also take `.github/workflows/ubuntu.yml` as a reference.
+
+For this project, `DEB` is the only supported cpack generator in current state, feel free to submit a PR if you like improving `cpack` support for this project.
+
+### Windows
+
+The normal build steps for Linux is also applied to Windows, but since Windows doesn't have a decent package manager, so if you need any other image formats support other than the supported formats which Qt provided, you need to get and build these imageformats plugins manually and vendor it. It's optional and can be skipped if you don't need extra image formats support.
+
+For the Windows binary I provided, kimageformats plugin is used (for formats like kra, xcf, psd and etc.). You can take `appveyor.yml` as a reference to learn what I did when building the Windows binary.
+
+[KDE Craft](https://community.kde.org/Craft) environment also can be used to build and package this program. I did also created a blueprint for building this project, but since I don't have a CI to run KDE Craft build, the blueprint repo are not provided here. Maybe sometimes later.
+
+### macOS
+
+I don't have a mac, so no support at all. There is also a GitHub Action (see `.github/workflows/macos.yml`) running macOS build though so at least it can build. Feel free to submit a PR if you would like to give some love to the macOS build ;P
+
+## Help Translation!
+
+[Translate this project on Transifex!](https://www.transifex.com/blumia/pineapple-pictures/)
+
+Feel free to open up an issue to request a new language to translate.

 ## License

--- a/appveyor.yml
+++ b/appveyor.yml
@ -1,25 +1,69 @@
 environment:
+  CMAKE_INSTALL_ROOT: C:\projects\cmake
+  ZLIB_ROOT: C:\projects\zlib
  matrix:
-    - build_name: mingw73_32_qt5_12_5
-      QTPATH: C:\Qt\5.12.5\mingw73_32
+    - build_name: mingw73_32_qt5_12_6
+      QTPATH: C:\Qt\5.12.6\mingw73_32
      MINGW32: C:\Qt\Tools\mingw730_32
-#    - build_name: msvc2017_64
-#      QTPATH: C:\Qt\5.11.2\msvc2017_64
-#      MINGW32: C:\Qt\Tools\mingw530_32

 install:
+  - mkdir %CMAKE_INSTALL_ROOT%
+  - mkdir %ZLIB_ROOT%
  - cd %APPVEYOR_BUILD_FOLDER%
  - git submodule update --init --recursive
-  - set PATH=%PATH%;%QTPATH%\bin;%MINGW32%\bin
+  - set PATH=%PATH%;%CMAKE_INSTALL_ROOT%;%QTPATH%\bin;%MINGW32%\bin

 build_script:
+# prepare
+  - mkdir 3rdparty
+  - cinst ninja
+# install ECM so we can build KImageFormats
+  - cd 3rdparty
+  - git clone -q https://invent.kde.org/frameworks/extra-cmake-modules.git
+  - cd extra-cmake-modules
+  - cmake -G "Ninja" . -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT%
+  - cmake --build .
+  - cmake --build . --target install
+  - cd %APPVEYOR_BUILD_FOLDER%
+# download and install zlib for KArchive
+  - cd %ZLIB_ROOT%
+  - curl -fsS -o zlib128-dll.zip http://zlib.net/zlib128-dll.zip
+  - 7z e zlib128-dll.zip
+  - cd %APPVEYOR_BUILD_FOLDER%
+# install KArchive for kra format support of KImageFormats
+  - cd 3rdparty
+  - git clone -q https://invent.kde.org/frameworks/karchive.git
+  - cd karchive
  - mkdir build
  - cd build
-  - qmake ..\PineapplePictures.pro
+  - cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT% -DCMAKE_CXX_FLAGS_RELEASE="-s" -DCMAKE_MAKE_PROGRAM=mingw32-make -DZLIB_ROOT=%ZLIB_ROOT%
+# -DCMAKE_PREFIX_PATH=%CMAKE_INSTALL_ROOT% 
+  - cmake --build . --config Release
+  - cmake --build . --config Release --target install
+  - cd %APPVEYOR_BUILD_FOLDER%
+# install KImageFormats
+  - cd 3rdparty
+  - git clone -q https://invent.kde.org/frameworks/kimageformats.git
+  - cd kimageformats
+  - mkdir build
+  - cd build
+  - cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS_RELEASE="-s" -DCMAKE_MAKE_PROGRAM=mingw32-make -DQT_PLUGIN_INSTALL_DIR=%QTPATH%\plugins
+  - cmake --build . --config Release
+  - cmake --build . --config Release --target install
+  - cd %APPVEYOR_BUILD_FOLDER%
+# finally...
+  - mkdir build
+  - cd build
+  - cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_MAKE_PROGRAM=mingw32-make -DCMAKE_INSTALL_PREFIX='%cd%'
  - mingw32-make
-  - cd release
-  - del /a /f /q "*.o" "*.cpp" "*.h"
-  - windeployqt --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler --release .\PineapplePictures.exe
+  - mingw32-make install
+# fixme: I don't know how to NOT make the binary installed to the ./bin/ folder...
+  - cd bin
+  - copy %APPVEYOR_BUILD_FOLDER%\LICENSE .
+  - copy C:\projects\cmake\bin\libKF5Archive.dll .
+  - windeployqt --verbose=2 --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler --release .\ppic.exe
+# for debug..
+  - tree /f

 artifacts:
-  - path: build\release
+  - path: build\bin
--- a/graphicsscene.cpp
+++ b/graphicsscene.cpp
@ -8,6 +8,7 @@
 #include <QGraphicsSvgItem>
 #include <QMovie>
 #include <QLabel>
+#include <QPainter>

 GraphicsScene::GraphicsScene(QObject *parent)
    : QGraphicsScene(parent)
@ -58,3 +59,24 @@ void GraphicsScene::showGif(const QString &filepath)
                               QPen(Qt::transparent));
    this->setSceneRect(m_theThing->boundingRect());
 }
+
+bool GraphicsScene::trySetTransformationMode(Qt::TransformationMode mode)
+{
+    QGraphicsPixmapItem * pixmapItem = qgraphicsitem_cast<QGraphicsPixmapItem *>(m_theThing);
+    if (pixmapItem) {
+        pixmapItem->setTransformationMode(mode);
+        return true;
+    }
+
+    return false;
+}
+
+QPixmap GraphicsScene::renderToPixmap()
+{
+    QPixmap pixmap(sceneRect().toRect().size());
+    pixmap.fill(Qt::transparent);
+    QPainter p(&pixmap);
+    render(&p, sceneRect());
+
+    return pixmap;
+}
--- a/graphicsscene.h
+++ b/graphicsscene.h
@ -15,6 +15,10 @@ public:
    void showSvg(const QString &filepath);
    void showGif(const QString &filepath);

+    bool trySetTransformationMode(Qt::TransformationMode mode);
+
+    QPixmap renderToPixmap();
+
 private:
    QGraphicsItem * m_theThing;
 };
--- a/graphicsview.cpp
+++ b/graphicsview.cpp
@ -31,6 +31,17 @@ void GraphicsView::showFileFromUrl(const QUrl &url, bool doRequestGallery)

    QString filePath(url.toLocalFile());

+#ifdef Q_OS_WIN
+    // TODO: remove this workaround when M$ change the "wsl$" hostname.
+    if (Q_UNLIKELY(url.scheme() == QStringLiteral("qtbug-86277"))) {
+        filePath = url.path();
+        // Qt's QUrl won't work with such hostname anyway so the urls will
+        // still be the wrong one when requesting gallery. So we just don't
+        // request gallery here...
+        doRequestGallery = false;
+    }
+#endif // Q_OS_WIN
+
    if (filePath.endsWith(".svg")) {
        showSvg(filePath);
    } else if (filePath.endsWith(".gif")) {
@ -39,8 +50,10 @@ void GraphicsView::showFileFromUrl(const QUrl &url, bool doRequestGallery)
        QImageReader imageReader(filePath);
        imageReader.setAutoTransform(true);
        imageReader.setDecideFormatFromContent(true);
-        QImage::Format imageFormat = imageReader.imageFormat();
-        if (imageFormat == QImage::Format_Invalid) {
+        // Since if the image format / plugin does not support this feature, imageFormat() will returns an invalid format.
+        // So we cannot use imageFormat() and check if it returns QImage::Format_Invalid to detect if we support the file.
+        // QImage::Format imageFormat = imageReader.imageFormat();
+        if (imageReader.format().isEmpty()) {
            showText(tr("File is not a valid image"));
        } else {
            showImage(QPixmap::fromImageReader(&imageReader));
@ -59,6 +72,13 @@ void GraphicsView::showImage(const QPixmap &pixmap)
    checkAndDoFitInView();
 }

+void GraphicsView::showImage(const QImage &image)
+{
+    resetTransform();
+    scene()->showImage(QPixmap::fromImage(image));
+    checkAndDoFitInView();
+}
+
 void GraphicsView::showText(const QString &text)
 {
    resetTransform();
@ -110,6 +130,7 @@ void GraphicsView::zoomView(qreal scaleFactor)
 {
    m_enableFitInView = false;
    scale(scaleFactor, scaleFactor);
+    applyTransformationModeByScaleFactor();
    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), m_rotateAngle);
 }

@ -129,14 +150,19 @@ void GraphicsView::rotateView(qreal rotateAngel)
 void GraphicsView::fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode)
 {
    QGraphicsView::fitInView(rect, aspectRadioMode);
+    applyTransformationModeByScaleFactor();
 }

-void GraphicsView::checkAndDoFitInView()
+void GraphicsView::checkAndDoFitInView(bool markItOnAnyway)
 {
    if (!isThingSmallerThanWindowWith(transform())) {
        m_enableFitInView = true;
        fitInView(sceneRect(), Qt::KeepAspectRatio);
    }
+
+    if (markItOnAnyway) {
+        m_enableFitInView = true;
+    }
 }

 void GraphicsView::toggleCheckerboard()
@ -206,9 +232,9 @@ void GraphicsView::dragEnterEvent(QDragEnterEvent *event)
    } else {
        event->ignore();
    }
-    qDebug() << event->mimeData() << "Drag Enter Event"
-             << event->mimeData()->hasUrls() << event->mimeData()->hasImage()
-             << event->mimeData()->formats() << event->mimeData()->hasFormat("text/uri-list");
+//    qDebug() << event->mimeData() << "Drag Enter Event"
+//             << event->mimeData()->hasUrls() << event->mimeData()->hasImage()
+//             << event->mimeData()->formats() << event->mimeData()->hasFormat("text/uri-list");

    return QGraphicsView::dragEnterEvent(event);
 }
@ -231,7 +257,7 @@ void GraphicsView::dropEvent(QDropEvent *event)
        if (urls.isEmpty()) {
            showText(tr("File url list is empty"));
        } else {
-            showFileFromUrl(urls.first());
+            showFileFromUrl(urls.first(), true);
        }
    } else if (mimeData->hasImage()) {
        QImage img = qvariant_cast<QImage>(mimeData->imageData());
@ -278,9 +304,9 @@ void GraphicsView::setCheckerboardEnabled(bool enabled)
    if (m_checkerboardEnabled) {
        // Prepare background check-board pattern
        QPixmap tilePixmap(0x20, 0x20);
-        tilePixmap.fill(QColor(35, 35, 35, 110));
+        tilePixmap.fill(QColor(35, 35, 35, 170));
        QPainter tilePainter(&tilePixmap);
-        QColor color(40, 40, 40, 110);
+        QColor color(45, 45, 45, 170);
        tilePainter.fillRect(0, 0, 0x10, 0x10, color);
        tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, color);
        tilePainter.end();
@ -291,6 +317,15 @@ void GraphicsView::setCheckerboardEnabled(bool enabled)
    }
 }

+void GraphicsView::applyTransformationModeByScaleFactor()
+{
+    if (this->scaleFactor() < 1) {
+        scene()->trySetTransformationMode(Qt::SmoothTransformation);
+    } else {
+        scene()->trySetTransformationMode(Qt::FastTransformation);
+    }
+}
+
 void GraphicsView::resetWithScaleAndRotate(qreal scaleFactor, qreal rotateAngle)
 {
    QGraphicsView::resetTransform();
--- a/graphicsview.h
+++ b/graphicsview.h
@ -14,6 +14,7 @@ public:
    void showFileFromUrl(const QUrl &url, bool requestGallery = false);

    void showImage(const QPixmap &pixmap);
+    void showImage(const QImage &image);
    void showText(const QString &text);
    void showSvg(const QString &filepath);
    void showGif(const QString &filepath);
@ -29,7 +30,7 @@ public:
    void rotateView(qreal rotateAngel);
    void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);

-    void checkAndDoFitInView();
+    void checkAndDoFitInView(bool markItOnAnyway = true);

 signals:
    void navigatorViewRequired(bool required, qreal angle);
@ -53,6 +54,7 @@ private:
    bool isThingSmallerThanWindowWith(const QTransform &transform) const;
    bool shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) const;
    void setCheckerboardEnabled(bool enabled);
+    void applyTransformationModeByScaleFactor();

    void resetWithScaleAndRotate(qreal scaleFactor, qreal rotateAngle);

--- a/icons/app-icon.ico
+++ b/icons/app-icon.ico
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+++ b/icons/app-icon.svg
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+    <path
+       style="fill:none;stroke:#ffffff;stroke-width:0.396875;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       d="M 8.3550725,6.9255115 11.353504,9.9239423 8.3550725,12.91402"
+       id="path867" />
+  </g>
+</svg>
--- a/icons/go-previous.svg
+++ b/icons/go-previous.svg
@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="go-previous.svg"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 19.84375 19.843751"
+   height="75"
+   width="75">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     inkscape:window-maximized="1"
+     inkscape:window-y="-9"
+     inkscape:window-x="-9"
+     inkscape:window-height="1001"
+     inkscape:window-width="1920"
+     inkscape:guide-bbox="true"
+     showguides="true"
+     inkscape:pagecheckerboard="false"
+     units="px"
+     showgrid="false"
+     inkscape:document-rotation="0"
+     inkscape:current-layer="layer1"
+     inkscape:document-units="px"
+     inkscape:cy="45.995918"
+     inkscape:cx="29.794477"
+     inkscape:zoom="11.313709"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.76862745"
+     borderopacity="1.0"
+     bordercolor="#666666"
+     pagecolor="#282929"
+     id="base">
+    <sodipodi:guide
+       id="guide857"
+       orientation="0,-1"
+       position="11.453565,9.9198082" />
+    <sodipodi:guide
+       id="guide837"
+       orientation="1,0"
+       position="9.9229088,19.564698" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1"
+     inkscape:groupmode="layer"
+     inkscape:label="图层 1">
+    <ellipse
+       ry="8.9158831"
+       rx="8.6764698"
+       cy="9.915391"
+       cx="9.9368067"
+       id="path849"
+       style="opacity:1;fill:#000000;fill-opacity:0.15678;stroke:#ffffff;stroke-width:0.396875;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+    <path
+       id="path867"
+       d="M 11.494016,6.9255115 8.4955849,9.9239423 11.494016,12.91402"
+       style="fill:none;stroke:#ffffff;stroke-width:0.396875;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+  </g>
+</svg>
--- a/languages/PineapplePictures.ts
+++ b/languages/PineapplePictures.ts
@ -4,7 +4,7 @@
 <context>
    <name>GraphicsScene</name>
    <message>
-        <location filename="../graphicsscene.cpp" line="15"/>
+        <location filename="../graphicsscene.cpp" line="16"/>
        <source>Drag image here</source>
        <translation type="unfinished"></translation>
    </message>
@ -12,7 +12,7 @@
 <context>
    <name>GraphicsView</name>
    <message>
-        <location filename="../graphicsview.cpp" line="32"/>
+        <location filename="../graphicsview.cpp" line="247"/>
        <source>File url list is empty</source>
        <translation type="unfinished"></translation>
    </message>
@ -22,12 +22,12 @@
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../graphicsview.cpp" line="238"/>
+        <location filename="../graphicsview.cpp" line="255"/>
        <source>Image data is invalid</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../graphicsview.cpp" line="245"/>
+        <location filename="../graphicsview.cpp" line="262"/>
        <source>Not supported mimedata: %1</source>
        <translation type="unfinished"></translation>
    </message>
@ -35,52 +35,120 @@
 <context>
    <name>MainWindow</name>
    <message>
-        <location filename="../mainwindow.cpp" line="229"/>
-        <location filename="../mainwindow.cpp" line="248"/>
+        <location filename="../mainwindow.cpp" line="174"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="396"/>
+        <source>&amp;Copy</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="417"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="422"/>
+        <source>Copy &amp;File Path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="432"/>
+        <source>&amp;Paste Image</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="438"/>
+        <source>&amp;Paste Image File</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="443"/>
+        <location filename="../mainwindow.cpp" line="471"/>
        <source>Stay on top</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="235"/>
-        <location filename="../mainwindow.cpp" line="249"/>
+        <location filename="../mainwindow.cpp" line="450"/>
+        <location filename="../mainwindow.cpp" line="472"/>
        <source>Protected mode</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="241"/>
+        <location filename="../mainwindow.cpp" line="457"/>
+        <source>Configure...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="464"/>
        <source>Help</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="244"/>
+        <location filename="../mainwindow.cpp" line="467"/>
        <source>Launch application with image file path as argument to load the file.</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="245"/>
+        <location filename="../mainwindow.cpp" line="468"/>
        <source>Drag and drop image file onto the window is also supported.</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="247"/>
+        <location filename="../mainwindow.cpp" line="470"/>
        <source>Context menu option explanation:</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="248"/>
+        <location filename="../mainwindow.cpp" line="471"/>
        <source>Make window stay on top of all other windows.</source>
        <translation type="unfinished"></translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="249"/>
+        <location filename="../mainwindow.cpp" line="472"/>
        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
        <translation type="unfinished"></translation>
    </message>
 </context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="18"/>
+        <source>Do nothing</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="19"/>
+        <source>Close the window</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="20"/>
+        <source>Toggle maximize</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>Stay on top when start-up</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="29"/>
+        <source>Double-click behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
    <name>main</name>
    <message>
-        <location filename="../main.cpp" line="18"/>
+        <location filename="../main.cpp" line="27"/>
+        <source>Pineapple Pictures</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="31"/>
        <source>File list.</source>
        <translation type="unfinished"></translation>
    </message>
--- a/languages/PineapplePictures_zh_CN.ts
+++ b/languages/PineapplePictures_zh_CN.ts
@ -4,7 +4,7 @@
 <context>
    <name>GraphicsScene</name>
    <message>
-        <location filename="../graphicsscene.cpp" line="15"/>
+        <location filename="../graphicsscene.cpp" line="16"/>
        <source>Drag image here</source>
        <translation>拖放图片至此</translation>
    </message>
@ -12,7 +12,7 @@
 <context>
    <name>GraphicsView</name>
    <message>
-        <location filename="../graphicsview.cpp" line="32"/>
+        <location filename="../graphicsview.cpp" line="247"/>
        <source>File url list is empty</source>
        <translation>文件 URL 列表为空</translation>
    </message>
@ -22,12 +22,12 @@
        <translation>文件不是有效的图片文件</translation>
    </message>
    <message>
-        <location filename="../graphicsview.cpp" line="238"/>
+        <location filename="../graphicsview.cpp" line="255"/>
        <source>Image data is invalid</source>
        <translation>图片数据无效</translation>
    </message>
    <message>
-        <location filename="../graphicsview.cpp" line="245"/>
+        <location filename="../graphicsview.cpp" line="262"/>
        <source>Not supported mimedata: %1</source>
        <translation>不受支持的 MimeData 格式：%1</translation>
    </message>
@ -35,52 +35,124 @@
 <context>
    <name>MainWindow</name>
    <message>
-        <location filename="../mainwindow.cpp" line="229"/>
-        <location filename="../mainwindow.cpp" line="248"/>
+        <location filename="../mainwindow.cpp" line="174"/>
+        <source>File url list is empty</source>
+        <translation>文件 URL 列表为空</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="396"/>
+        <source>&amp;Copy</source>
+        <translation>复制(&amp;C)</translation>
+    </message>
+    <message>
+        <source>Copy &amp;Pixmap</source>
+        <translation type="vanished">复制位图(&amp;P)</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="417"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>复制位图(&amp;I)</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="422"/>
+        <source>Copy &amp;File Path</source>
+        <translation>复制文件路径(&amp;F)</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="432"/>
+        <source>&amp;Paste Image</source>
+        <translation>粘贴图像(&amp;P)</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="438"/>
+        <source>&amp;Paste Image File</source>
+        <translation>粘贴图像文件(&amp;P)</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="443"/>
+        <location filename="../mainwindow.cpp" line="471"/>
        <source>Stay on top</source>
        <translation>总在最前</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="235"/>
-        <location filename="../mainwindow.cpp" line="249"/>
+        <location filename="../mainwindow.cpp" line="450"/>
+        <location filename="../mainwindow.cpp" line="472"/>
        <source>Protected mode</source>
        <translation>保护模式</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="241"/>
+        <location filename="../mainwindow.cpp" line="457"/>
+        <source>Configure...</source>
+        <translation>设置...</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="464"/>
        <source>Help</source>
        <translation>帮助</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="244"/>
+        <location filename="../mainwindow.cpp" line="467"/>
        <source>Launch application with image file path as argument to load the file.</source>
        <translation>以图片文件的路径作为参数运行程序即可直接打开图片文件。</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="245"/>
+        <location filename="../mainwindow.cpp" line="468"/>
        <source>Drag and drop image file onto the window is also supported.</source>
        <translation>也支持拖放图片文件到窗口内来加载图片。</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="247"/>
+        <location filename="../mainwindow.cpp" line="470"/>
        <source>Context menu option explanation:</source>
        <translation>菜单项说明：</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="248"/>
+        <location filename="../mainwindow.cpp" line="471"/>
        <source>Make window stay on top of all other windows.</source>
        <translation>使窗口始终至于其它非置顶窗口上方。</translation>
    </message>
    <message>
-        <location filename="../mainwindow.cpp" line="249"/>
+        <location filename="../mainwindow.cpp" line="472"/>
        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
        <translation>避免窗口意外关闭。（如：不小心双击了窗口触发了关闭窗口行为）</translation>
    </message>
 </context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="18"/>
+        <source>Do nothing</source>
+        <translation>什么也不做</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="19"/>
+        <source>Close the window</source>
+        <translation>关闭窗口</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="20"/>
+        <source>Toggle maximize</source>
+        <translation>最大化窗口</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>Stay on top when start-up</source>
+        <translation>启动时保持窗口总在最前</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="29"/>
+        <source>Double-click behavior</source>
+        <translation>双击时的行为</translation>
+    </message>
+</context>
 <context>
    <name>main</name>
    <message>
-        <location filename="../main.cpp" line="18"/>
+        <location filename="../main.cpp" line="27"/>
+        <source>Pineapple Pictures</source>
+        <translation>菠萝看图</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="31"/>
        <source>File list.</source>
        <translation>文件列表。</translation>
    </message>
--- a/main.cpp
+++ b/main.cpp
@ -1,17 +1,30 @@
 #include "mainwindow.h"
 #include <QApplication>
 #include <QCommandLineParser>
+#include <QDir>
 #include <QTranslator>
 #include <QUrl>

+// QM_FILE_INSTALL_DIR should be defined from the CMakeLists file.
+#ifndef QM_FILE_INSTALL_DIR
+#define QM_FILE_INSTALL_DIR ":/i18n/"
+#endif // QM_FILE_INSTALL_DIR
+
 int main(int argc, char *argv[])
 {
    QApplication a(argc, argv);

-    // since we did `CONFIG += lrelease embed_translations`...
    QTranslator translator;
-    translator.load(QString("PineapplePictures_%1").arg(QLocale::system().name()), ":/i18n/");
+    QString qmDir;
+#ifdef _WIN32
+    qmDir = QDir(QCoreApplication::applicationDirPath()).absoluteFilePath("translations");
+#else
+    qmDir = QT_STRINGIFY(QM_FILE_INSTALL_DIR);
+#endif
+    translator.load(QString("PineapplePictures_%1").arg(QLocale::system().name()), qmDir);
    a.installTranslator(&translator);
+    a.setApplicationName("Pineapple Pictures");
+    a.setApplicationDisplayName(QCoreApplication::translate("main", "Pineapple Pictures"));

    // parse commandline arguments
    QCommandLineParser parser;
@ -24,6 +37,14 @@ int main(int argc, char *argv[])
    QList<QUrl> urlList;
    for (const QString & str : urlStrList) {
        QUrl url = QUrl::fromLocalFile(str);
+#ifdef Q_OS_WIN
+        // TODO: remove this workaround when M$ change the "wsl$" hostname.
+        if (Q_UNLIKELY(str.startsWith(R"(\\wsl$\)"))) {
+            url.clear();
+            url.setScheme(QStringLiteral("qtbug-86277"));
+            url.setPath(str);
+        }
+#endif // Q_OS_WIN
        if (url.isValid()) {
            urlList.append(url);
        }
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@ -1,10 +1,12 @@
 #include "mainwindow.h"

+#include "settings.h"
 #include "toolbutton.h"
 #include "bottombuttongroup.h"
 #include "graphicsview.h"
 #include "navigatorview.h"
 #include "graphicsscene.h"
+#include "settingsdialog.h"

 #include <QMouseEvent>
 #include <QMovie>
@ -17,6 +19,8 @@
 #include <QShortcut>
 #include <QDir>
 #include <QCollator>
+#include <QClipboard>
+#include <QMimeData>

 #ifdef _WIN32
 #include <windows.h>
@ -25,10 +29,16 @@
 MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent)
 {
-    this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
+    if (Settings::instance()->stayOnTop()) {
+        this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowMinimizeButtonHint | Qt::WindowStaysOnTopHint);
+    } else {
+        this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowMinimizeButtonHint);
+    }
+
    this->setAttribute(Qt::WA_TranslucentBackground, true);
-    this->setMinimumSize(710, 530);
+    this->setMinimumSize(350, 350);
    this->setWindowIcon(QIcon(":/icons/app-icon.svg"));
+    this->setMouseTracking(true);

    m_fadeOutAnimation = new QPropertyAnimation(this, "windowOpacity");
    m_fadeOutAnimation->setDuration(300);
@ -70,25 +80,35 @@ MainWindow::MainWindow(QWidget *parent) :
    connect(m_graphicsView, &GraphicsView::requestGallery,
            this, &MainWindow::loadGalleryBySingleLocalFile);

-    m_closeButton = new ToolButton(m_graphicsView);
+    m_closeButton = new ToolButton(true, m_graphicsView);
    m_closeButton->setIcon(QIcon(":/icons/window-close"));
    m_closeButton->setIconSize(QSize(50, 50));

    connect(m_closeButton, &QAbstractButton::clicked,
            this, &MainWindow::closeWindow);

+    m_prevButton = new ToolButton(false, m_graphicsView);
+    m_prevButton->setIcon(QIcon(":/icons/go-previous"));
+    m_prevButton->setIconSize(QSize(75, 75));
+    m_prevButton->setVisible(false);
+    m_prevButton->setOpacity(0, false);
+    m_nextButton = new ToolButton(false, m_graphicsView);
+    m_nextButton->setIcon(QIcon(":/icons/go-next"));
+    m_nextButton->setIconSize(QSize(75, 75));
+    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);
+
    m_bottomButtonGroup = new BottomButtonGroup(this);

    connect(m_bottomButtonGroup, &BottomButtonGroup::resetToOriginalBtnClicked,
            this, [ = ](){ m_graphicsView->resetScale(); });
    connect(m_bottomButtonGroup, &BottomButtonGroup::toggleWindowMaximum,
-            this, [ = ](){
-        if (isMaximized()) {
-            showNormal();
-        } else {
-            showMaximized();
-        }
-    });
+            this, &MainWindow::toggleMaximize);
    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomInBtnClicked,
            this, [ = ](){ m_graphicsView->zoomView(1.25); });
    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomOutBtnClicked,
@ -107,10 +127,19 @@ MainWindow::MainWindow(QWidget *parent) :
    m_gv->setOpacity(0, false);
    m_closeButton->setOpacity(0, false);

+    connect(this, &MainWindow::galleryLoaded, this, [this]() {
+        m_prevButton->setVisible(isGalleryAvailable());
+        m_nextButton->setVisible(isGalleryAvailable());
+    });
+
    QShortcut * quitAppShorucut = new QShortcut(QKeySequence(Qt::Key_Space), this);
    connect(quitAppShorucut, &QShortcut::activated,
            std::bind(&MainWindow::quitAppAction, this, false));

+    QShortcut * quitAppShorucut2 = new QShortcut(QKeySequence(Qt::Key_Escape), this);
+    connect(quitAppShorucut2, &QShortcut::activated,
+            std::bind(&MainWindow::quitAppAction, this, false));
+
    QShortcut * prevPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageUp), this);
    connect(prevPictureShorucut, &QShortcut::activated,
            this, &MainWindow::galleryPrev);
@ -119,6 +148,10 @@ MainWindow::MainWindow(QWidget *parent) :
    connect(nextPictureShorucut, &QShortcut::activated,
            this, &MainWindow::galleryNext);

+    QShortcut * fullscreenShorucut = new QShortcut(QKeySequence(QKeySequence::FullScreen), this);
+    connect(fullscreenShorucut, &QShortcut::activated,
+            this, &MainWindow::toggleFullscreen);
+
    centerWindow();
 }

@ -155,11 +188,11 @@ void MainWindow::adjustWindowSizeBySceneRect()
        QSize screenSize = qApp->screenAt(QCursor::pos())->availableSize();
        if (screenSize.expandedTo(sceneSize) == screenSize) {
            // we can show the picture by increase the window size.
-            if (screenSize.expandedTo(sceneSizeWithMargins) == screenSize) {
-                this->resize(sceneSizeWithMargins);
-            } else {
-                this->resize(screenSize);
-            }
+            QSize finalSize = (screenSize.expandedTo(sceneSizeWithMargins) == screenSize) ?
+                              sceneSizeWithMargins : screenSize;
+            // We have a very reasonable sizeHint() value ;P
+            this->resize(finalSize.expandedTo(this->sizeHint()));
+
            // We're sure the window can display the whole thing with 1:1 scale.
            // 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
@ -173,12 +206,28 @@ void MainWindow::adjustWindowSizeBySceneRect()
    }
 }

+// can be empty if it is NOT from a local file.
+QUrl MainWindow::currentImageFileUrl() const
+{
+    if (m_currentFileIndex != -1) {
+        return m_files.value(m_currentFileIndex);
+    }
+
+    return QUrl();
+}
+
+void MainWindow::clearGallery()
+{
+    m_currentFileIndex = -1;
+    m_files.clear();
+}
+
 void MainWindow::loadGalleryBySingleLocalFile(const QString &path)
 {
    QFileInfo info(path);
    QDir dir(info.path());
    QString currentFileName = info.fileName();
-    QStringList entryList = dir.entryList({"*.jpg", "*.jpeg", "*.png", "*.gif", "*.svg"},
+    QStringList entryList = dir.entryList({"*.jpg", "*.jpeg", "*.jfif", "*.png", "*.gif", "*.svg", "*.bmp"},
                                          QDir::Files | QDir::NoSymLinks, QDir::NoSort);

    QCollator collator;
@ -186,8 +235,7 @@ void MainWindow::loadGalleryBySingleLocalFile(const QString &path)

    std::sort(entryList.begin(), entryList.end(), collator);

-    m_currentFileIndex = -1;
-    m_files.clear();
+    clearGallery();

    for (int i = 0; i < entryList.count(); i++) {
        const QString & oneEntry = entryList.at(i);
@ -197,13 +245,13 @@ void MainWindow::loadGalleryBySingleLocalFile(const QString &path)
        }
    }

-    qDebug() << m_files << m_currentFileIndex;
+    emit galleryLoaded();
 }

 void MainWindow::galleryPrev()
 {
    int count = m_files.count();
-    if (m_currentFileIndex < 0 || m_files.isEmpty() || m_currentFileIndex >= m_files.count()) {
+    if (!isGalleryAvailable()) {
        return;
    }

@ -215,7 +263,7 @@ void MainWindow::galleryPrev()
 void MainWindow::galleryNext()
 {
    int count = m_files.count();
-    if (m_currentFileIndex < 0 || m_files.isEmpty() || m_currentFileIndex >= m_files.count()) {
+    if (!isGalleryAvailable()) {
        return;
    }

@ -224,6 +272,14 @@ void MainWindow::galleryNext()
    m_graphicsView->showFileFromUrl(m_files.at(m_currentFileIndex), false);
 }

+bool MainWindow::isGalleryAvailable()
+{
+    if (m_currentFileIndex < 0 || m_files.isEmpty() || m_currentFileIndex >= m_files.count()) {
+        return false;
+    }
+    return true;
+}
+
 void MainWindow::showEvent(QShowEvent *event)
 {
    updateWidgetsPosition();
@ -237,6 +293,8 @@ void MainWindow::enterEvent(QEvent *event)
    m_gv->setOpacity(1);

    m_closeButton->setOpacity(1);
+    m_prevButton->setOpacity(1);
+    m_nextButton->setOpacity(1);

    return QMainWindow::enterEvent(event);
 }
@ -247,6 +305,8 @@ void MainWindow::leaveEvent(QEvent *event)
    m_gv->setOpacity(0);

    m_closeButton->setOpacity(0);
+    m_prevButton->setOpacity(0);
+    m_nextButton->setOpacity(0);

    return QMainWindow::leaveEvent(event);
 }
@ -256,8 +316,8 @@ 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();
+//        qDebug() << m_oldMousePos << m_graphicsView->transform().m11()
+//                 << m_graphicsView->transform().m22() << m_graphicsView->matrix().m12();
        event->accept();
    }

@ -266,7 +326,7 @@ void MainWindow::mousePressEvent(QMouseEvent *event)

 void MainWindow::mouseMoveEvent(QMouseEvent *event)
 {
-    if (event->buttons() & Qt::LeftButton && m_clickedOnWindow) {
+    if (event->buttons() & Qt::LeftButton && m_clickedOnWindow && !isMaximized()) {
        move(event->globalPos() - m_oldMousePos);
        event->accept();
    }
@ -283,17 +343,43 @@ void MainWindow::mouseReleaseEvent(QMouseEvent *event)

 void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
 {
-    quitAppAction();
+    switch (Settings::instance()->doubleClickBehavior()) {
+    case ActionCloseWindow:
+        quitAppAction();
+        event->accept();
+        break;
+    case ActionMaximizeWindow:
+        toggleMaximize();
+        event->accept();
+        break;
+    case ActionDoNothing:
+        break;
+    }

-    return QMainWindow::mouseDoubleClickEvent(event);
+    // blumia: don't call parent constructor here, seems it will cause mouse move
+    //         event get called even if we set event->accept();
+    // return QMainWindow::mouseDoubleClickEvent(event);
 }

 void MainWindow::wheelEvent(QWheelEvent *event)
 {
-    if (event->delta() > 0) {
-        m_graphicsView->zoomView(1.25);
+    QPoint numDegrees = event->angleDelta() / 8;
+    bool needZoom = false, zoomIn = false;
+
+    // NOTE: Only checking angleDelta since the QWheelEvent::pixelDelta() doc says
+    //       pixelDelta() value is driver specific and unreliable on X11...
+    //       We are not scrolling the canvas, just zoom in or out, so it probably
+    //       doesn't matter here.
+    if (!numDegrees.isNull() && numDegrees.y() != 0) {
+        needZoom = true;
+        zoomIn = numDegrees.y() > 0;
+    }
+
+    if (needZoom) {
+        m_graphicsView->zoomView(zoomIn ? 1.25 : 0.8);
+        event->accept();
    } else {
-        m_graphicsView->zoomView(0.8);
+        QMainWindow::wheelEvent(event);
    }
 }

@ -307,18 +393,74 @@ void MainWindow::resizeEvent(QResizeEvent *event)
 void MainWindow::contextMenuEvent(QContextMenuEvent *event)
 {
    QMenu * menu = new QMenu;
+    QMenu * copyMenu = new QMenu(tr("&Copy"));
+    QUrl currentFileUrl = currentImageFileUrl();
+    QImage clipboardImage;
+    QUrl clipboardFileUrl;
+
+    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
+    if (clipboardData->hasImage()) {
+        QVariant imageVariant(clipboardData->imageData());
+        if (imageVariant.isValid()) {
+            clipboardImage = qvariant_cast<QImage>(imageVariant);
+        }
+    } 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);
+            }
+        }
+    }
+
+    QAction * copyPixmap = new QAction(tr("Copy P&ixmap"));
+    connect(copyPixmap, &QAction::triggered, this, [ = ](){
+        QClipboard *cb = QApplication::clipboard();
+        cb->setPixmap(m_graphicsView->scene()->renderToPixmap());
+    });
+    QAction * copyFilePath = new QAction(tr("Copy &File Path"));
+    connect(copyFilePath, &QAction::triggered, this, [ = ](){
+        QClipboard *cb = QApplication::clipboard();
+        cb->setText(currentFileUrl.toLocalFile());
+    });
+    copyMenu->addAction(copyPixmap);
+    if (currentFileUrl.isValid()) {
+        copyMenu->addAction(copyFilePath);
+    }
+
+    QAction * pasteImage = new QAction(tr("&Paste Image"));
+    connect(pasteImage, &QAction::triggered, this, [ = ](){
+        clearGallery();
+        m_graphicsView->showImage(clipboardImage);
+    });
+
+    QAction * pasteImageFile = new QAction(tr("&Paste Image File"));
+    connect(pasteImageFile, &QAction::triggered, this, [ = ](){
+        m_graphicsView->showFileFromUrl(clipboardFileUrl, true);
+    });
+
    QAction * stayOnTopMode = new QAction(tr("Stay on top"));
    connect(stayOnTopMode, &QAction::triggered, this, [ = ](){
        toggleStayOnTop();
    });
    stayOnTopMode->setCheckable(true);
    stayOnTopMode->setChecked(stayOnTop());
+
    QAction * protectedMode = new QAction(tr("Protected mode"));
    connect(protectedMode, &QAction::triggered, this, [ = ](){
        toggleProtectedMode();
    });
    protectedMode->setCheckable(true);
    protectedMode->setChecked(m_protectedMode);
+
+    QAction * toggleSettings = new QAction(tr("Configure..."));
+    connect(toggleSettings, &QAction::triggered, this, [ = ](){
+        SettingsDialog * sd = new SettingsDialog(this);
+        sd->exec();
+        sd->deleteLater();
+    });
+
    QAction * helpAction = new QAction(tr("Help"));
    connect(helpAction, &QAction::triggered, this, [ = ](){
        QStringList sl {
@ -331,9 +473,22 @@ void MainWindow::contextMenuEvent(QContextMenuEvent *event)
        };
        m_graphicsView->showText(sl.join('\n'));
    });
+
+    if (copyMenu->actions().count() == 1) {
+        menu->addActions(copyMenu->actions());
+    } else {
+        menu->addMenu(copyMenu);
+    }
+    if (!clipboardImage.isNull()) {
+        menu->addAction(pasteImage);
+    } else if (clipboardFileUrl.isValid()) {
+        menu->addAction(pasteImageFile);
+    }
+    menu->addSeparator();
    menu->addAction(stayOnTopMode);
    menu->addAction(protectedMode);
    menu->addSeparator();
+    menu->addAction(toggleSettings);
    menu->addAction(helpAction);
    menu->exec(mapToGlobal(event->pos()));
    menu->deleteLater();
@ -428,6 +583,11 @@ bool MainWindow::nativeEvent(const QByteArray &eventType, void *message, long *r
 #endif // _WIN32
 }

+QSize MainWindow::sizeHint() const
+{
+    return QSize(710, 530);
+}
+
 void MainWindow::centerWindow()
 {
    this->setGeometry(
@ -453,6 +613,9 @@ void MainWindow::closeWindow()
 void MainWindow::updateWidgetsPosition()
 {
    m_closeButton->move(width() - m_closeButton->width(), 0);
+    m_prevButton->move(25, (height() - m_prevButton->height()) / 2);
+    m_nextButton->move(width() - m_nextButton->width() - 25,
+                       (height() - m_prevButton->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());
@ -462,6 +625,8 @@ void MainWindow::toggleProtectedMode()
 {
    m_protectedMode = !m_protectedMode;
    m_closeButton->setVisible(!m_protectedMode);
+    m_prevButton->setVisible(!m_protectedMode);
+    m_nextButton->setVisible(!m_protectedMode);
 }

 void MainWindow::toggleStayOnTop()
@ -481,3 +646,21 @@ void MainWindow::quitAppAction(bool force)
        closeWindow();
    }
 }
+
+void MainWindow::toggleFullscreen()
+{
+    if (isFullScreen()) {
+        showNormal();
+    } else {
+        showFullScreen();
+    }
+}
+
+void MainWindow::toggleMaximize()
+{
+    if (isMaximized()) {
+        showNormal();
+    } else {
+        showMaximized();
+    }
+}
--- a/mainwindow.h
+++ b/mainwindow.h
@ -25,10 +25,16 @@ public:

    void showUrls(const QList<QUrl> &urls);
    void adjustWindowSizeBySceneRect();
+    QUrl currentImageFileUrl() const;

+    void clearGallery();
    void loadGalleryBySingleLocalFile(const QString &path);
    void galleryPrev();
    void galleryNext();
+    bool isGalleryAvailable();
+
+signals:
+    void galleryLoaded();

 protected slots:
    void showEvent(QShowEvent *event) override;
@ -44,6 +50,8 @@ protected slots:

    bool nativeEvent(const QByteArray& eventType, void* message, long* result) override;

+    QSize sizeHint() const override;
+
    void centerWindow();
    void closeWindow();
    void updateWidgetsPosition();
@ -51,6 +59,8 @@ protected slots:
    void toggleStayOnTop();
    bool stayOnTop();
    void quitAppAction(bool force = false);
+    void toggleFullscreen();
+    void toggleMaximize();

 private:
    QPoint m_oldMousePos;
@ -58,6 +68,8 @@ private:
    QPropertyAnimation *m_floatUpAnimation;
    QParallelAnimationGroup *m_exitAnimationGroup;
    ToolButton *m_closeButton;
+    ToolButton *m_prevButton;
+    ToolButton *m_nextButton;
    GraphicsView *m_graphicsView;
    NavigatorView *m_gv;
    BottomButtonGroup *m_bottomButtonGroup;
--- a/pineapple-pictures.desktop
+++ b/pineapple-pictures.desktop
@ -0,0 +1,15 @@
+[Desktop Entry]
+Categories=Graphics;
+Comment=Pineapple Pictures is a lightweight image viewer
+Comment[zh_CN]=菠萝看图是一个轻量级的图像查看器
+Exec=ppic %F
+GenericName=Image Viewer
+GenericName[zh_CN]=图像查看器
+Icon=pineapple-pictures
+Keywords=Picture;Image;Viewer;Jpg;Jpeg;Png;
+MimeType=image/bmp;image/bmp24;image/jpg;image/jpe;image/jpeg;image/jpeg24;image/jng;image/pcd;image/pcx;image/png;image/tif;image/tiff;image/tiff24;image/dds;image/gif;image/sgi;image/j2k;image/jp2;image/pct;image/wdp;image/arw;image/icb;image/dng;image/vda;image/vst;image/svg;image/ptif;image/mef;image/xbm;image/svg+xml;
+Name=Pineapple Pictures
+Name[zh_CN]=菠萝看图
+StartupNotify=false
+Type=Application
+Terminal=false
--- a/pineapple-pictures.rc
+++ b/pineapple-pictures.rc
@ -0,0 +1,17 @@
+IDI_ICON1               ICON    DISCARDABLE     "icons/app-icon.ico"
+1               VERSIONINFO
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904E4"
+        BEGIN
+            VALUE "FileDescription", "Pineapple Pictures - Image Viewer"
+            VALUE "LegalCopyright", "MIT/Expat License - Copyright (C) 2020 Gary Wang"
+            VALUE "ProductName", "Pineapple Pictures"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END
--- a/resources.qrc
+++ b/resources.qrc
@ -8,5 +8,7 @@
        <file>icons/view-background-checkerboard.svg</file>
        <file>icons/app-icon.svg</file>
        <file>icons/window-close.svg</file>
+        <file>icons/go-next.svg</file>
+        <file>icons/go-previous.svg</file>
    </qresource>
 </RCC>
--- a/settings.cpp
+++ b/settings.cpp
@ -0,0 +1,86 @@
+#include "settings.h"
+
+#include <QApplication>
+#include <QStandardPaths>
+#include <QDebug>
+#include <QDir>
+
+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()
+{
+    return m_qsettings->value("stay_on_top", true).toBool();
+}
+
+DoubleClickBehavior Settings::doubleClickBehavior()
+{
+    QString result = m_qsettings->value("double_click_behavior", "close").toString().toLower();
+
+    return stringToDoubleClickBehavior(result);
+}
+
+void Settings::setStayOnTop(bool on)
+{
+    m_qsettings->setValue("stay_on_top", on);
+    m_qsettings->sync();
+}
+
+void Settings::setDoubleClickBehavior(DoubleClickBehavior dcb)
+{
+    m_qsettings->setValue("double_click_behavior", doubleClickBehaviorToString(dcb));
+    m_qsettings->sync();
+}
+
+QString Settings::doubleClickBehaviorToString(DoubleClickBehavior dcb)
+{
+    static QMap<DoubleClickBehavior, QString> _map {
+        {ActionCloseWindow, "close"},
+        {ActionMaximizeWindow, "maximize"},
+        {ActionDoNothing, "ignore"}
+    };
+
+    return _map.value(dcb, "close");
+}
+
+DoubleClickBehavior Settings::stringToDoubleClickBehavior(QString str)
+{
+    static QMap<QString, DoubleClickBehavior> _map {
+        {"close", ActionCloseWindow},
+        {"maximize", ActionMaximizeWindow},
+        {"ignore", ActionDoNothing}
+    };
+
+    return _map.value(str, ActionCloseWindow);
+}
+
+Settings::Settings()
+    : QObject(qApp)
+{
+    QString configPath;
+
+#ifdef FLAG_PORTABLE_MODE_SUPPORT
+    QString portableConfigDirPath = QDir(QCoreApplication::applicationDirPath()).absoluteFilePath("data");
+    QFileInfo portableConfigDirInfo(portableConfigDirPath);
+    if (portableConfigDirInfo.exists() && portableConfigDirInfo.isDir() && portableConfigDirInfo.isWritable()) {
+        // we can use it.
+        configPath = portableConfigDirPath;
+    }
+#endif // FLAG_PORTABLE_MODE_SUPPORT
+
+    // %LOCALAPPDATA% under Windows.
+    if (configPath.isEmpty()) {
+        configPath = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation);
+    }
+
+    m_qsettings = new QSettings(QDir(configPath).absoluteFilePath("config.ini"), QSettings::IniFormat, this);
+}
+
--- a/settings.h
+++ b/settings.h
@ -0,0 +1,41 @@
+#pragma once
+
+#include <QObject>
+#include <QSettings>
+
+enum DoubleClickBehavior {
+    ActionDoNothing,
+    ActionCloseWindow,
+    ActionMaximizeWindow,
+
+    ActionStart = ActionDoNothing,
+    ActionEnd = ActionMaximizeWindow
+};
+
+class Settings : public QObject
+{
+    Q_OBJECT
+public:
+    static Settings *instance();
+
+    bool stayOnTop();
+    DoubleClickBehavior doubleClickBehavior();
+
+    void setStayOnTop(bool on);
+    void setDoubleClickBehavior(DoubleClickBehavior dcb);
+
+    static QString doubleClickBehaviorToString(DoubleClickBehavior dcb);
+    static DoubleClickBehavior stringToDoubleClickBehavior(QString str);
+
+private:
+    Settings();
+
+    static Settings *m_settings_instance;
+
+    QSettings *m_qsettings;
+
+signals:
+
+public slots:
+};
+
--- a/settingsdialog.cpp
+++ b/settingsdialog.cpp
@ -0,0 +1,51 @@
+#include "settingsdialog.h"
+
+#include "settings.h"
+
+#include <QCheckBox>
+#include <QComboBox>
+#include <QFormLayout>
+#include <QStringListModel>
+
+SettingsDialog::SettingsDialog(QWidget *parent)
+    : QDialog(parent)
+    , m_stayOnTop(new QCheckBox)
+    , m_doubleClickBehavior(new QComboBox)
+{
+    QFormLayout * settingsForm = new QFormLayout(this);
+
+    static QMap<DoubleClickBehavior, QString> _map {
+        { ActionDoNothing, tr("Do nothing") },
+        { ActionCloseWindow, tr("Close the window") },
+        { ActionMaximizeWindow, tr("Toggle maximize") }
+    };
+
+    QStringList dropDown;
+    for (int dcb = ActionStart; dcb <= ActionEnd; dcb++) {
+        dropDown.append(_map.value(static_cast<DoubleClickBehavior>(dcb)));
+    }
+
+    settingsForm->addRow(tr("Stay on top when start-up"), m_stayOnTop);
+    settingsForm->addRow(tr("Double-click behavior"), m_doubleClickBehavior);
+
+    m_stayOnTop->setChecked(Settings::instance()->stayOnTop());
+    m_doubleClickBehavior->setModel(new QStringListModel(dropDown));
+    DoubleClickBehavior dcb = Settings::instance()->doubleClickBehavior();
+    m_doubleClickBehavior->setCurrentIndex(static_cast<int>(dcb));
+
+    connect(m_stayOnTop, &QCheckBox::stateChanged, this, [ = ](int state){
+        Settings::instance()->setStayOnTop(state == Qt::Checked);
+    });
+
+    connect(m_doubleClickBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setDoubleClickBehavior(static_cast<DoubleClickBehavior>(index));
+    });
+
+    this->setMinimumSize(300, 61); // not sure why it complain "Unable to set geometry"
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
+}
+
+SettingsDialog::~SettingsDialog()
+{
+
+}
--- a/settingsdialog.h
+++ b/settingsdialog.h
@ -0,0 +1,26 @@
+#ifndef SETTINGSDIALOG_H
+#define SETTINGSDIALOG_H
+
+#include <QObject>
+#include <QWidget>
+#include <QDialog>
+
+class QCheckBox;
+class QComboBox;
+class SettingsDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit SettingsDialog(QWidget *parent = nullptr);
+    ~SettingsDialog();
+
+signals:
+
+public slots:
+
+private:
+    QCheckBox * m_stayOnTop = nullptr;
+    QComboBox * m_doubleClickBehavior = nullptr;
+};
+
+#endif // SETTINGSDIALOG_H
--- a/toolbutton.cpp
+++ b/toolbutton.cpp
@ -6,18 +6,20 @@
 #include <QGraphicsOpacityEffect>
 #include <QPropertyAnimation>

-ToolButton::ToolButton(QWidget *parent)
+ToolButton::ToolButton(bool hoverColor, QWidget *parent)
    : QPushButton(parent)
    , m_opacityHelper(new OpacityHelper(this))
 {
    setFlat(true);
-    setFixedSize(50, 50);
-    setStyleSheet("QPushButton {"
+    QString qss = "QPushButton {"
                  "background: transparent;"
-                  "}"
-                  "QPushButton:hover {"
-                  "background: red;"
-                  "}");
+                  "}";
+    if (hoverColor) {
+        qss += "QPushButton:hover {"
+               "background: red;"
+               "}";
+    }
+    setStyleSheet(qss);
 }

 void ToolButton::setOpacity(qreal opacity, bool animated)
--- a/toolbutton.h
+++ b/toolbutton.h
@ -8,7 +8,7 @@ class ToolButton : public QPushButton
 {
    Q_OBJECT
 public:
-    ToolButton(QWidget * parent = nullptr);
+    ToolButton(bool hoverColor = false, QWidget * parent = nullptr);

 public slots:
    void setOpacity(qreal opacity, bool animated = true);
Author	SHA1	Message	Date
Gary Wang	9f67be61fb	fix: cannot load images under WSL2 network location workaround resolve GH-7	2020-08-28 15:25:07 +08:00
Gary Wang	761f5e064c	feat(i18n): add zh_CN translation for .desktop file	2020-08-26 19:06:41 +08:00
Gary Wang	84e100c174	Update README.md	2020-08-23 23:46:12 +08:00
Gary Wang	d64e9cf276	build(ci): deb package for ubuntu 20.04	2020-08-13 19:45:38 +08:00
Gary Wang	dc82115e1f	fix: don't show what's this button from setting dialog.	2020-08-11 09:08:31 +08:00
Gary Wang	3b94eecde2	chore: only enable portable mode support for windows	2020-08-10 23:41:59 +08:00
Felix Yan	f3b3ad7b8a	Correct a typo in PineapplePictures.pro	2020-08-06 19:40:44 +08:00
Gary Wang	1a511ddb02	CI: for windows build, also copy LICENSE file to binary dir	2020-08-04 19:15:10 +08:00
Gary Wang	1cb67b48f4	fix: cannot minimize window by clicking taskbar icon	2020-08-04 19:10:02 +08:00
Gary Wang	90d0869b5e	doc: prepare for repo url change	2020-07-29 13:26:54 +08:00
Gary Wang	7004e74165	i18n: update translations for new strings	2020-07-29 13:23:31 +08:00
Gary Wang	a2adb0e1d4	feat: simple config dialog	2020-07-29 00:57:43 +08:00
Gary Wang	6709c21d70	config file support	2020-07-28 21:29:37 +08:00
Gary Wang	31fae2cc8c	misc: lower minimum window size limit	2020-07-27 20:47:54 +08:00
Gary Wang	20be5e6f4f	fix: windows icon size not correct in explorer	2020-07-22 19:02:23 +08:00
Gary Wang	6009c2682e	ci(windows): build with karchive to support kra and ora formats	2020-07-22 13:46:21 +08:00
Gary Wang	92ded932ec	feat: add version info datat for windows, and application display name	2020-07-21 20:47:06 +08:00
Gary Wang	cd942b4fcc	fix: try to fix icon resolution issue under windows	2020-07-21 14:01:27 +08:00
Gary Wang	6fc1b2e7c8	Merge pull request #5 from Lovelyblack/master new icon :)	2020-07-21 13:44:35 +08:00
Macat	278988b628	Add files via upload	2020-07-21 13:36:47 +08:00
Macat	9b19d13ee2	New Ico	2020-07-21 13:35:57 +08:00
Gary Wang	c271fde194	chore: stop using QWheelEvent::delta()	2020-07-12 23:46:00 +08:00
Gary Wang	fb24e54579	feat: add prev and next button	2020-07-04 13:49:12 +08:00
Gary Wang	3b1af64397	fix(CI): since KDE are using their new GitLab instance	2020-06-18 23:13:39 +08:00
Gary Wang	4dbfb2f881	CI: add GitHub Action ubuntu build	2020-06-18 23:06:15 +08:00
Gary Wang	fe0b36dc34	feat: add a fullscreen shortcut	2020-05-19 14:08:29 +08:00
xmuli	1864ff5b7f	test: Create macos.yml (#3 ) Use GitHub Action to test building under macOS	2020-04-25 23:42:21 +08:00
Gary Wang	fb1ad2ba06	misc: cpack info for debian package	2020-04-20 10:57:27 +08:00
Gary Wang	e3dfc9c673	feat(ci): build and use kimageformats plugins	2020-03-03 13:51:25 +08:00
Gary Wang	eb648e3112	fix: use format() to check if we support such format	2020-03-03 09:53:23 +08:00
Gary Wang	5495fa06d3	fix: okay it's jfif...	2020-02-24 19:48:22 +08:00
Gary Wang	41e75f10b5	misc: add jiff as a valid image file suffix	2020-02-23 23:04:54 +08:00
Gary Wang	6b0e4b6767	fix: should clear gallery when paste image	2020-02-22 17:09:36 +08:00
Gary Wang	f49ed645fc	fix: use SmoothTransformation when scale factor less than 100%	2020-02-13 19:45:14 +08:00
Gary Wang	8fe860e4bf	build: requires at least Qt 5.10 for building	2020-01-30 11:35:15 +08:00
Gary Wang	2d07290fbe	adjust checkerboard alpha channel value	2020-01-27 17:11:24 +08:00
Gary Wang	5cbcbfecba	Update README.md	2020-01-05 15:36:22 +08:00
Gary Wang	03bb25c3ae	fix: build under non win32 platform	2020-01-05 15:22:47 +08:00
Gary Wang	a41f2af021	i18n: update translate strings	2020-01-05 15:07:08 +08:00
Gary Wang	a694c2b037	fix: when copy pixmap, keep the alpha channel	2020-01-05 14:38:39 +08:00
Gary Wang	3a6a4cbc68	feat: i18n support again.	2020-01-05 14:30:33 +08:00
Gary Wang	a6cfd1a714	feat: basic support for cpack	2020-01-04 00:10:54 +08:00
Gary Wang	11ea4c9063	Update README.md	2020-01-03 15:58:15 +08:00
Gary Wang	c51a603ec9	feat: support basic image copy and paste	2020-01-01 14:51:46 +08:00
Gary Wang	4a5fe4c289	fix: avoid console window under Windows with cmake build	2019-11-24 23:31:45 +08:00
Gary Wang	6074a00b33	chore: cmake ci build test	2019-11-24 22:26:01 +08:00
Gary Wang	b5dc020795	fix: missing app icon under windows	2019-11-24 14:52:17 +08:00
Gary Wang	3f91d8271b	chore: migrate to CMake	2019-11-23 20:51:58 +08:00