Update README.md

* Translated using Weblate (Norwegian Bokmål)

Currently translated at 90.9% (110 of 121 strings)

Translation: pineapple-pictures/Application
Translate-URL: https://hosted.weblate.org/projects/pineapple-pictures/application/nb_NO/

* Translated using Weblate (Dutch)

Currently translated at 100.0% (121 of 121 strings)

Translation: pineapple-pictures/Application
Translate-URL: https://hosted.weblate.org/projects/pineapple-pictures/application/nl/

* Translated using Weblate (Russian)

Currently translated at 100.0% (121 of 121 strings)

Translation: pineapple-pictures/Application
Translate-URL: https://hosted.weblate.org/projects/pineapple-pictures/application/ru/

Co-authored-by: Allan Nordhøy <epost@anotheragency.no>
Co-authored-by: Heimen Stoffels <vistausss@fastmail.com>
Co-authored-by: Sergey Shornikov <sergey0000000000@gmail.com>

.github/workflows/macos.yml

@@ -0,0 +1,19 @@
+name: macOS CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Qt
+      uses: jurplel/install-qt-action@v2
+      with:
+        version: '5.15.2'
+    - name: Run a qt project
+      run: |
+        cmake ./
+        make

.github/workflows/ubuntu.yml

@@ -0,0 +1,30 @@
+name: Ubuntu 20.04 CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Get build dept.
+      run: |
+        sudo apt update
+        sudo apt install cmake qtbase5-dev libqt5svg5-dev qttools5-dev libexiv2-dev
+    - name: Build it
+      run: |
+        mkdir build
+        cd build
+        cmake ../
+        make
+        cpack -G DEB
+    - name: Try install it
+      run: |
+        cd build
+        sudo apt install ./*.deb
+    - uses: actions/upload-artifact@v2
+      with:
+        name: ubuntu-20.04-deb-package
+        path: build/*.deb

.gitignore

@@ -1,5 +1,6 @@
 # User files
 *.user
+*.user.*
 
 # Translation files
 *.qm

CMakeLists.txt

@@ -2,37 +2,71 @@ project (pineapple-pictures)
 
 cmake_minimum_required (VERSION 3.9.5)
 
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)
+
 include (GNUInstallDirs)
+include (FeatureSummary)
 
 set (CMAKE_AUTOMOC ON)
 set (CMAKE_AUTORCC ON)
-set (QT_MINIMUM_VERSION "5.7.1")
+set (QT_MINIMUM_VERSION "5.10")
+
+option (EXIV2_METADATA_SUPPORT "Better image metadata support via libexiv2" ON)
 
 find_package(Qt5 ${QT_MINIMUM_VERSION} CONFIG REQUIRED Widgets Svg LinguistTools)
 
+if (EXIV2_METADATA_SUPPORT)
+    find_package(LibExiv2)
+    set_package_properties(LibExiv2 PROPERTIES
+        URL "https://www.exiv2.org"
+        DESCRIPTION "image metadata support"
+        TYPE OPTIONAL
+        PURPOSE "Bring better image metadata support"
+    )
+endif ()
+
+#LibExiv2_FOUND
 set (PPIC_CPP_FILES
-    main.cpp
-    mainwindow.cpp
-    graphicsview.cpp
-    graphicsscene.cpp
-    bottombuttongroup.cpp
-    navigatorview.cpp
-    opacityhelper.cpp
-    toolbutton.cpp
+    app/main.cpp
+    app/framelesswindow.cpp
+    app/mainwindow.cpp
+    app/actionmanager.cpp
+    app/graphicsview.cpp
+    app/graphicsscene.cpp
+    app/bottombuttongroup.cpp
+    app/navigatorview.cpp
+    app/opacityhelper.cpp
+    app/toolbutton.cpp
+    app/settings.cpp
+    app/settingsdialog.cpp
+    app/aboutdialog.cpp
+    app/metadatamodel.cpp
+    app/metadatadialog.cpp
+    app/exiv2wrapper.cpp
+    app/playlistmanager.cpp
 )
 
 set (PPIC_HEADER_FILES
-    mainwindow.h
-    graphicsview.h
-    graphicsscene.h
-    bottombuttongroup.h
-    navigatorview.h
-    opacityhelper.h
-    toolbutton.h
+    app/framelesswindow.h
+    app/mainwindow.h
+    app/actionmanager.h
+    app/graphicsview.h
+    app/graphicsscene.h
+    app/bottombuttongroup.h
+    app/navigatorview.h
+    app/opacityhelper.h
+    app/toolbutton.h
+    app/settings.h
+    app/settingsdialog.h
+    app/aboutdialog.h
+    app/metadatamodel.h
+    app/metadatadialog.h
+    app/exiv2wrapper.h
+    app/playlistmanager.h
 )
 
 set (PPIC_QRC_FILES
-    resources.qrc
+    assets/resources.qrc
 )
 
 set (PPIC_RC_FILES
@@ -42,13 +76,13 @@ set (PPIC_RC_FILES
 set (EXE_NAME ppic)
 
 # Translation
-file (GLOB PPIC_TS_FILES languages/*.ts)
+file (GLOB PPIC_TS_FILES app/translations/*.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)
+    list(APPEND PPIC_RC_FILES assets/pineapple-pictures.rc)
 endif ()
 
 add_executable (${EXE_NAME}
@@ -61,12 +95,72 @@ add_executable (${EXE_NAME}
 
 target_link_libraries (${EXE_NAME} Qt5::Widgets Qt5::Svg)
 
+if (LibExiv2_FOUND)
+    message(INFO ${LibExiv2_INCLUDE_DIRS})
+    target_include_directories(${EXE_NAME}
+    PRIVATE
+        ${LibExiv2_INCLUDE_DIRS}
+    )
+    target_link_libraries (${EXE_NAME}
+        LibExiv2::LibExiv2
+    )
+    target_compile_definitions(${EXE_NAME} PRIVATE
+        HAVE_EXIV2_VERSION="${LibExiv2_VERSION}"
+    )
+endif ()
+
 # 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(${_git_describe_long})
+        target_compile_definitions(${EXE_NAME} PRIVATE
+            GIT_DESCRIBE_VERSION_STRING="${_git_describe_long}"
+        )
+    endif ()
 endif ()
 
 # Helper macros for install settings
@@ -94,16 +188,22 @@ elseif (UNIX)
 
     # install icon
     install (
-        FILES icons/app-icon.svg
+        FILES assets/icons/app-icon.svg
         DESTINATION "${CMAKE_INSTALL_DATADIR}/icons/hicolor/48x48/apps"
         RENAME pineapple-pictures.svg
     )
 
     # install shortcut
     install (
-        FILES pineapple-pictures.desktop
+        FILES dist/net.blumia.pineapple-pictures.desktop
         DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/applications"
     )
+
+    # install app metadata file for appstream (and some other stuff using this metadata like snapcraft)
+    install (
+        FILES dist/appstream/net.blumia.pineapple-pictures.appdata.xml
+        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/metainfo"
+    )
 endif()
 
 set (INSTALL_TARGETS_DEFAULT_ARGS
@@ -131,18 +231,22 @@ install (
     DESTINATION ${QM_FILE_INSTALL_DIR}
 )
 
+feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
+
 # CPACK: General Settings
 set (CPACK_GENERATOR "TBZ2")
-set (CPACK_PACKAGE_NAME "PineapplePictures")
+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/")
+set (CPACK_PACKAGE_CONTACT "https://github.com/BLumia/pineapple-pictures/issues/")
 if (WIN32)
     # ...
 elseif (APPLE)
     # ...
 elseif (UNIX)
-    set(CPACK_SYSTEM_NAME "${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+    set (CPACK_SYSTEM_NAME "${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+    set (CPACK_DEBIAN_PACKAGE_SHILIBDEPS ON)
+    set (CPACK_DEBIAN_PACKAGE_RECOMMENDS "kimageformat-plugins")
 endif()
 
 include(CPack)

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 BLumia
+Copyright (c) 2020 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

PineapplePictures.pro

@@ -1,60 +0,0 @@
-#-------------------------------------------------
-#
-# Project created by QtCreator 2019-09-26T23:36:07
-#
-#-------------------------------------------------
-
-QT       += core gui svg
-
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
-
-TARGET = PineapplePictures
-TEMPLATE = app
-
-# 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++11 lrelease embed_translations
-
-SOURCES += \
-        main.cpp \
-        mainwindow.cpp \
-    graphicsview.cpp \
-    bottombuttongroup.cpp \
-    graphicsscene.cpp \
-    navigatorview.cpp \
-    opacityhelper.cpp \
-    toolbutton.cpp
-
-HEADERS += \
-        mainwindow.h \
-    graphicsview.h \
-    bottombuttongroup.h \
-    graphicsscene.h \
-    navigatorview.h \
-    opacityhelper.h \
-    toolbutton.h
-
-TRANSLATIONS = \
-    languages/PineapplePictures.ts \
-    languages/PineapplePictures_zh_CN.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 += \
-    resources.qrc
-
-# Generate fron svg:
-# magick convert -background none ./app-icon.svg -define icon:auto-resize=64,48,32,16 app-icon.ico
-RC_ICONS = icons/app-icon.ico

README.md

@@ -3,27 +3,73 @@ Yet another image viewer.
 |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)|
 
 ![Pineapple Pictures - Main Window](https://repository-images.githubusercontent.com/211888654/21fb6300-269f-11ea-8e85-953e5d57da44)
 
+## Summary
+
+Pineapple Pictures is a lightweight image viewer that allows you view JPEG, PNG, GIF, SVG, PSD, KRA, XCF, TGA, 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!
 
- - [GitHub Release Page](https://github.com/BLumia/PineapplePictures/releases)
- - Archlinux AUR: [pineapple-pictures-git](https://aur.archlinux.org/packages/pineapple-pictures-git/)
+ - [GitHub Release Page](https://github.com/BLumia/pineapple-pictures/releases)
+ - [SourceForge](https://sourceforge.net/projects/pineapple-pictures/)
+ - Archlinux AUR: [pineapple-pictures](https://aur.archlinux.org/packages/pineapple-pictures/) | [pineapple-pictures-git](https://aur.archlinux.org/packages/pineapple-pictures-git/)
+ - Debian (since bullseye) or Ubuntu (since 21.04): `sudo apt install pineapple-pictures`
+ - [Itch.io Store](https://blumia.itch.io/pineapple-pictures)
 
 ## Help Translation!
 
-[Translate this project on Transifex!](https://www.transifex.com/blumia/pineapple-pictures/)
+[Translate this project on Weblate!](https://hosted.weblate.org/projects/pineapple-pictures/)
 
-Feel free to open up an issue to request an new language to translate.
+## Build it manually:
 
-## Uncleaned shits inside(TM):
+Current state, we need:
 
- - 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).
+ - `cmake`: as the build system.
+ - `qt5` with `qt5-svg` and `qt5-tools`: since the app is using Qt.
+ - `libexiv2`: able to display more image metadata. (optional, but recommended)
+
+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.
+
+The project will try to build with `exiv2` when it's available at build time, if you would like to build the project without `exiv2`, pass `-DEXIV2_METADATA_SUPPORT=OFF` to `cmake`. The project will also not use `exiv2` if it's not found, the `EXIV2_METADATA_SUPPORT` option can be useful if you have `exiv2` but specifically don't want to use it.
+
+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
 
 ## License
 
-This program released under MIT license
+Pineapple Pictures as a whole is licensed under MIT license. Individual files may have a different, but compatible license.

README.zh_CN.md

@@ -0,0 +1,75 @@
+简单轻量的跨平台看图工具。
+
+|CI|构建状态|
+|---|---|
+|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)|
+
+![Pineapple Pictures - Main Window](https://repository-images.githubusercontent.com/211888654/21fb6300-269f-11ea-8e85-953e5d57da44)
+
+## 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, 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!
+
+ - [GitHub Release 页面](https://github.com/BLumia/pineapple-pictures/releases) | [gitee 发布页面](https://gitee.com/blumia/pineapple-pictures/releases)
+ - [SourceForge](https://sourceforge.net/projects/pineapple-pictures/)
+ - Archlinux AUR: [pineapple-pictures](https://aur.archlinux.org/packages/pineapple-pictures/) | [pineapple-pictures-git](https://aur.archlinux.org/packages/pineapple-pictures-git/)
+ - Debian (自 bullseye 起) 或 Ubuntu (自 21.04 起): `sudo apt install pineapple-pictures`
+ - [Itch.io 商店](https://blumia.itch.io/pineapple-pictures)
+
+## 帮助翻译!
+
+[在 Weblate 上帮助此项目翻译到更多语言!](https://hosted.weblate.org/projects/pineapple-pictures/)
+
+## 手动构建步骤:
+
+当前状态，我们需要先确保如下依赖可用:
+
+ - `cmake`: 我们所使用的构建系统
+ - 包含 `qt5-svg` 与 `qt5-tools` 组件的 `qt5`: 此应用基于 Qt
+ - `libexiv2`: 用以获取和显示更多的图像元信息（可选，推荐）
+
+然后我们就可以使用任何常规的 c++ 编译器如 g++ 或 msvc 来进行构建了
+
+构建过程就是常规的 CMake 应用构建过程:
+
+``` bash
+$ mkdir build && cd build
+$ cmake ..
+$ cmake --build . # 如果你使用 Makefile 作为 CMake 生成器，也可以直接简单的使用 `make`
+```
+
+完毕后，一个名为 `ppic` 的可执行程序即会被生成以供使用。您也可以选择通过使用 CMake 生成的 `install` 目标继续将其安装到您的设备上（假设您使用 Makefile，即可执行 `make install` 来进行安装）。构建步骤完毕后，您也可以使用 `cpack` 来对应用程序进行打包。
+
+当 `exiv2` 在构建时可用时，此项目将尝试使用其进行构建，若您不希望使用 `exiv2`，请传递 `-DEXIV2_METADATA_SUPPORT=OFF` 参数给 `cmake`。此项目在找不到 `exiv2` 时并不会使用 `exiv2`，`EXIV2_METADATA_SUPPORT` 选项可供尽管存在可用的 `exiv2` 但您明确不希望启用其支持时使用。
+
+此应用的图片格式支持依赖于 Qt 的 imageformats 插件，直接从您所用的发行版获取对应的图像格式插件即可。对于 Windows 用户，您可能需要手动构建和使用图像格式插件。下方给出了进一步的说明。
+
+### Linux
+
+常规的构建步骤即可完成构建，不需要额外的处理步骤 ;)
+
+对于 Archlinux 发行版的用户，这里还有一个 [PKGBUILD](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=pineapple-pictures-git) 可供使用和参考。
+
+对于在基于 debian 的发行版中进行打包的需求， `CMakeLists.txt` 已经提供了一些基本的 cpack 配置以便生成一个有效的 `.deb` 软件包。在构建步骤完毕后，使用 `cpack -G DEB` 即可生成 DEB 软件包。您也可以参考 `.github/workflows/ubuntu.yml` 来查看当前正在使用的 CI 配置是如何进行打包的。
+
+目前，`DEB` 是当前唯一受到直接支持的 cpack 生成目标。若希望为此项目添加其它的 cpack 目标支持，欢迎发起合并请求。
+
+### Windows
+
+上述的构建步骤在 Windows 中也适用，但由于 Windows 中不具备类如大多 Linux 发行版中所提供的方便的软件包管理机制，故如果您需要任何 Qt 官方支持之外的图像格式例如 psd，xcf，kra 等格式的支持，你就可能需要自行获取并构建对应的 imageformats 插件，并在您最终生成的可执行文件中一并提供这些插件。若您不需要这些额外的图像格式支持，这个步骤也可以直接跳过。
+
+我们所提供的预编译好的 Windows 程序包含了 kimageformats 插件来提供额外（kra, xcf, psd 等）格式的支持。您可以参考 `appveyor.yml` 来查看我们是如何构建并打包 Windows 可执行程序的。
+
+[KDE Craft](https://community.kde.org/Craft) 环境也可以被用来构建此应用程序。我也创建了一个蓝图来进行此项目的构建和打包。但由于暂时并未配置 CI 部署此环境来进行 KDE Craft 环境下的构建，故对应的蓝图仓库也尚未公开提供，或许后续会开放出来。
+
+### macOS
+
+由于我没有 mac 设备，故 macOS 暂时不受任何支持。不过我们目前有一个 GitHub Action 来执行 macOS 环境下的构建（见 `.github/workflows/macos.yml`）所以至少 macOS 下是可以顺利进行构建的。如果您想完善对 macOS 的支持，也欢迎您创建合并请求 ;P
+
+## 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

@@ -0,0 +1,167 @@
+#include "aboutdialog.h"
+
+#include <QAbstractButton>
+#include <QDialogButtonBox>
+#include <QTextBrowser>
+#include <QTabWidget>
+#include <QVBoxLayout>
+#include <QApplication>
+#include <QLabel>
+#include <QPushButton>
+#include <QFile>
+
+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)
+{
+    this->setWindowTitle(tr("About"));
+
+    const QStringList helpStr {
+        QStringLiteral("<p>%1</p>").arg(tr("Launch application with image file path as argument to load the file.")),
+        QStringLiteral("<p>%1</p>").arg(tr("Drag and drop image file onto the window is also supported.")),
+        QStringLiteral("<p>%1</p>").arg(tr("None of the operations in this application will alter the pictures on disk.")),
+        QStringLiteral("<p>%1</p>").arg(tr("Context menu option explanation:")),
+        QStringLiteral("<ul>"),
+        // 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.
+        QStringLiteral("<li><b>%1</b>:<br/>%2</li>")
+                .arg(QCoreApplication::translate("MainWindow", "Stay on top"))
+                .arg(tr("Make window stay on top of all other windows.")),
+        QStringLiteral("<li><b>%1</b>:<br/>%2</li>")
+                .arg(QCoreApplication::translate("MainWindow", "Protected mode"))
+                .arg(tr("Avoid close window accidentally. (eg. by double clicking the window)")),
+        QStringLiteral("</ul>")
+    };
+
+    const QStringList aboutStr {
+        QStringLiteral("<center><img width='128' height='128' src=':/icons/app-icon.svg'/><br/>"),
+        qApp->applicationDisplayName(),
+#ifdef GIT_DESCRIBE_VERSION_STRING
+        (QStringLiteral("<br/>") + tr("Version: %1").arg(GIT_DESCRIBE_VERSION_STRING)),
+#endif // GIT_DESCRIBE_VERSION_STRING
+        QStringLiteral("<hr/>"),
+        tr("Copyright (c) 2020 %1").arg(QStringLiteral("<a href='https://github.com/BLumia'>@BLumia</a>")),
+        QStringLiteral("<br/>"),
+        tr("Logo designed by %1").arg(QStringLiteral("<a href='https://github.com/Lovelyblack'>@Lovelyblack</a>")),
+        QStringLiteral("<hr/>"),
+        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")),
+        QStringLiteral("</center>")
+    };
+
+    QFile translaterHtml(":/plain/translators.html");
+    bool canOpenFile = translaterHtml.open(QIODevice::ReadOnly);
+    const QByteArray & translatorList = canOpenFile ? translaterHtml.readAll() : "";
+
+    const QStringList specialThanksStr {
+        QStringLiteral("<h1 align='center'>%1</h1><a href='%2'>%3</a><p>%4</p>").arg(
+            tr("Contributors"),
+            QStringLiteral("https://github.com/BLumia/pineapple-pictures/graphs/contributors"),
+            tr("List of contributors on GitHub"),
+            tr("Thanks to all people who contributed to this project.")
+        ),
+
+        QStringLiteral("<h1 align='center'>%1</h1><p>%2</p>%3").arg(
+            tr("Translators"),
+            tr("I would like to thank the following people who volunteered to translate this application."),
+            translatorList
+        )
+    };
+
+    const QStringList licenseStr {
+        QStringLiteral("<h1 align='center'><b>%1</b></h1>").arg(tr("Your Rights")),
+        QStringLiteral("<p>%1</p><p>%2</p><ul><li>%3</li><li>%4</li><li>%5</li><li>%6</li></ul>").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(QStringLiteral("<i>%1</i>")),
+        QStringLiteral("<p>%1</p>").arg(tr("The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.")),
+        QStringLiteral("<hr/><pre>%2</pre>")
+    };
+
+    const QString mitLicense(QStringLiteral(R"(Expat/MIT License
+
+Copyright (c) 2020 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 {
+        QStringLiteral("<h1 align='center'><b>%1</b></h1>").arg(tr("Third-party Libraries used by %1")),
+        tr("%1 is built on the following free software libraries:", "Free as in freedom"),
+        QStringLiteral("<ul>"),
+#ifdef HAVE_EXIV2_VERSION
+        QStringLiteral("<li><a href='%1'>%2</a>: %3</li>").arg("https://www.exiv2.org/", "Exiv2", "GPLv2"),
+#endif // EXIV2_VERSION
+        QStringLiteral("<li><a href='%1'>%2</a>: %3</li>").arg("https://www.qt.io/", "Qt", "GPLv2 + GPLv3 + LGPLv2.1 + LGPLv3"),
+        QStringLiteral("</ul>")
+    };
+
+    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(QStringLiteral("<i>%1</i>").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](){
+        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()
+{
+
+}
+
+QSize AboutDialog::sizeHint() const
+{
+    return QSize(520, 350);
+}

app/aboutdialog.h

@@ -0,0 +1,32 @@
+#ifndef ABOUTDIALOG_H
+#define ABOUTDIALOG_H
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QTextBrowser;
+class QTabWidget;
+class QDialogButtonBox;
+QT_END_NAMESPACE
+
+class AboutDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit AboutDialog(QWidget *parent = nullptr);
+    ~AboutDialog() override;
+
+    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;
+};
+
+#endif // ABOUTDIALOG_H

app/actionmanager.cpp

@@ -0,0 +1,77 @@
+#include "actionmanager.h"
+
+#include "mainwindow.h"
+
+#include <QCoreApplication>
+
+#define CREATE_NEW_ACTION(window, action)\
+    action = new QAction(window);\
+    action->setObjectName(QString::fromUtf8( #action ));\
+    window->addAction(action);
+
+ActionManager::ActionManager()
+{
+
+}
+
+ActionManager::~ActionManager()
+{
+
+}
+
+void ActionManager::setupAction(MainWindow *mainWindow)
+{
+    CREATE_NEW_ACTION(mainWindow, actionZoomIn);
+    CREATE_NEW_ACTION(mainWindow, actionZoomOut);
+    CREATE_NEW_ACTION(mainWindow, actionHorizontalFlip);
+    CREATE_NEW_ACTION(mainWindow, actionCopyPixmap);
+    CREATE_NEW_ACTION(mainWindow, actionCopyFilePath);
+    CREATE_NEW_ACTION(mainWindow, actionPaste);
+    CREATE_NEW_ACTION(mainWindow, actionToggleCheckerboard);
+    CREATE_NEW_ACTION(mainWindow, actionToggleStayOnTop);
+    CREATE_NEW_ACTION(mainWindow, actionToggleProtectMode);
+    CREATE_NEW_ACTION(mainWindow, actionSettings);
+    CREATE_NEW_ACTION(mainWindow, actionHelp);
+    CREATE_NEW_ACTION(mainWindow, actionProperties);
+    CREATE_NEW_ACTION(mainWindow, actionQuitApp);
+
+    retranslateUi(mainWindow);
+
+    QMetaObject::connectSlotsByName(mainWindow);
+}
+
+void ActionManager::retranslateUi(MainWindow *mainWindow)
+{
+    Q_UNUSED(mainWindow);
+
+    actionZoomIn->setText(QCoreApplication::translate("MainWindow", "Zoom in", nullptr));
+    actionZoomOut->setText(QCoreApplication::translate("MainWindow", "Zoom out", nullptr));
+    actionHorizontalFlip->setText(QCoreApplication::translate("MainWindow", "Flip &Horizontally", 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));
+    actionToggleCheckerboard->setText(QCoreApplication::translate("MainWindow", "Toggle Checkerboard", nullptr));
+    actionToggleStayOnTop->setText(QCoreApplication::translate("MainWindow", "Stay on top", nullptr));
+    actionToggleProtectMode->setText(QCoreApplication::translate("MainWindow", "Protected mode", nullptr));
+    actionSettings->setText(QCoreApplication::translate("MainWindow", "Configure...", nullptr));
+    actionHelp->setText(QCoreApplication::translate("MainWindow", "Help", nullptr));
+    actionProperties->setText(QCoreApplication::translate("MainWindow", "Properties", nullptr));
+    actionQuitApp->setText(QCoreApplication::translate("MainWindow", "Quit", nullptr));
+}
+
+void ActionManager::setupShortcuts()
+{
+    actionZoomIn->setShortcut(QKeySequence(QKeySequence::ZoomIn));
+    actionZoomOut->setShortcut(QKeySequence(QKeySequence::ZoomOut));
+    actionHorizontalFlip->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
+    actionCopyPixmap->setShortcut(QKeySequence(QKeySequence::Copy));
+    actionPaste->setShortcut(QKeySequence::Paste);
+    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)
+    });
+}
+

app/actionmanager.h

@@ -0,0 +1,34 @@
+#ifndef ACTIONMANAGER_H
+#define ACTIONMANAGER_H
+
+#include <QAction>
+
+class MainWindow;
+
+class ActionManager
+{
+public:
+    ActionManager();
+    ~ActionManager();
+
+    void setupAction(MainWindow * mainWindow);
+    void retranslateUi(MainWindow *MainWindow);
+    void setupShortcuts();
+
+public:
+    QAction *actionZoomIn;
+    QAction *actionZoomOut;
+    QAction *actionHorizontalFlip;
+    QAction *actionCopyPixmap;
+    QAction *actionCopyFilePath;
+    QAction *actionPaste;
+    QAction *actionToggleCheckerboard;
+    QAction *actionToggleStayOnTop;
+    QAction *actionToggleProtectMode;
+    QAction *actionSettings;
+    QAction *actionHelp;
+    QAction *actionProperties;
+    QAction *actionQuitApp;
+};
+
+#endif // ACTIONMANAGER_H

app/bottombuttongroup.cpp

@@ -33,7 +33,7 @@ BottomButtonGroup::BottomButtonGroup(QWidget *parent)
         QPushButton * btn = new QPushButton(QIcon(QStringLiteral(":/icons/") + text), "");
         btn->setIconSize(QSize(40, 40));
         btn->setFixedSize(40, 40);
-        connect(btn, &QAbstractButton::clicked, btn, func);
+        QObject::connect(btn, &QAbstractButton::clicked, btn, func);
         return btn;
     };
     addButton(newBtn("zoom-original", [this]() {

app/exiv2wrapper.cpp

@@ -0,0 +1,101 @@
+#include "exiv2wrapper.h"
+
+#ifdef HAVE_EXIV2_VERSION
+#include <exiv2/exiv2.hpp>
+#else // HAVE_EXIV2_VERSION
+namespace Exiv2 {
+class Image {};
+}
+#endif // HAVE_EXIV2_VERSION
+
+#include <sstream>
+
+#include <QFile>
+#include <QDebug>
+
+Exiv2Wrapper::Exiv2Wrapper()
+{
+
+}
+
+Exiv2Wrapper::~Exiv2Wrapper()
+{
+
+}
+
+template<typename Collection, typename Iterator>
+void Exiv2Wrapper::cacheSection(Collection collection)
+{
+    const Collection& exifData = collection;
+    Iterator it = exifData.begin(), end = exifData.end();
+    for (; it != end; ++it) {
+        QString key = QString::fromUtf8(it->key().c_str());
+        if (it->tagName().substr(0, 2) == "0x") continue;
+        QString label = QString::fromLocal8Bit(it->tagLabel().c_str());
+        std::ostringstream stream;
+        stream << *it;
+        QString value = QString::fromLocal8Bit(stream.str().c_str());
+        m_metadataValue.insert(key, value);
+        m_metadataLabel.insert(key, label);
+
+        qDebug() << key << label << value;
+    }
+}
+
+bool Exiv2Wrapper::load(const QString &filePath)
+{
+#ifdef HAVE_EXIV2_VERSION
+    QByteArray filePathByteArray = QFile::encodeName(filePath);
+    try {
+        m_exivImage.reset(Exiv2::ImageFactory::open(filePathByteArray.constData()).release());
+        m_exivImage->readMetadata();
+    } catch (const Exiv2::Error& error) {
+        m_errMsg = QString::fromUtf8(error.what());
+        return false;
+    }
+    return true;
+#else // HAVE_EXIV2_VERSION
+    Q_UNUSED(filePath);
+    return false;
+#endif // HAVE_EXIV2_VERSION
+}
+
+void Exiv2Wrapper::cacheSections()
+{
+#ifdef HAVE_EXIV2_VERSION
+    if (m_exivImage->checkMode(Exiv2::mdExif) & Exiv2::amRead) {
+        cacheSection<Exiv2::ExifData, Exiv2::ExifData::const_iterator>(m_exivImage->exifData());
+    }
+
+    if (m_exivImage->checkMode(Exiv2::mdIptc) & Exiv2::amRead) {
+        cacheSection<Exiv2::IptcData, Exiv2::IptcData::const_iterator>(m_exivImage->iptcData());
+    }
+
+    if (m_exivImage->checkMode(Exiv2::mdXmp) & Exiv2::amRead) {
+        cacheSection<Exiv2::XmpData, Exiv2::XmpData::const_iterator>(m_exivImage->xmpData());
+    }
+
+//    qDebug() << m_metadataValue;
+//    qDebug() << m_metadataLabel;
+#endif // HAVE_EXIV2_VERSION
+}
+
+QString Exiv2Wrapper::comment() const
+{
+#ifdef HAVE_EXIV2_VERSION
+    return m_exivImage->comment().c_str();
+#else // HAVE_EXIV2_VERSION
+    return QString();
+#endif // HAVE_EXIV2_VERSION
+}
+
+QString Exiv2Wrapper::label(const QString &key) const
+{
+    return m_metadataLabel.value(key);
+}
+
+QString Exiv2Wrapper::value(const QString &key) const
+{
+    return m_metadataValue.value(key);
+}
+

app/exiv2wrapper.h

@@ -0,0 +1,36 @@
+#ifndef EXIV2WRAPPER_H
+#define EXIV2WRAPPER_H
+
+#include <memory>
+
+#include <QString>
+#include <QMap>
+
+namespace Exiv2 {
+class Image;
+}
+
+class Exiv2Wrapper
+{
+public:
+    Exiv2Wrapper();
+    ~Exiv2Wrapper();
+
+    bool load(const QString& filePath);
+    void cacheSections();
+
+    QString comment() const;
+    QString label(const QString & key) const;
+    QString value(const QString & key) const;
+
+private:
+    std::unique_ptr<Exiv2::Image> m_exivImage;
+    QMap<QString, QString> m_metadataValue;
+    QMap<QString, QString> m_metadataLabel;
+    QString m_errMsg;
+
+    template<typename Collection, typename Iterator>
+    void cacheSection(Collection collection);
+};
+
+#endif // EXIV2WRAPPER_H

app/framelesswindow.cpp

@@ -0,0 +1,119 @@
+#include "framelesswindow.h"
+
+#include <QApplication>
+#include <QVBoxLayout>
+
+#ifdef _WIN32
+#include <windows.h>
+#endif // _WIN32
+
+FramelessWindow::FramelessWindow(QWidget *parent)
+    : QWidget(parent)
+    , m_centralLayout(new QVBoxLayout(this))
+{
+    // We should use Qt::WindowMinMaxButtonsHint here but there is a bug in Qt
+    // that will make pressing Meta+Up cause the app fullscreen under Windows,
+    // so for now we only use the Qt::WindowMinimizeButtonHint flag here.
+    // https://bugreports.qt.io/browse/QTBUG-91226
+    this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowMinimizeButtonHint);
+
+    m_centralLayout->setMargin(0);
+}
+
+void FramelessWindow::setCentralWidget(QWidget *widget)
+{
+    if (m_centralWidget) {
+        m_centralLayout->removeWidget(m_centralWidget);
+        m_centralWidget->deleteLater();
+    }
+
+    m_centralLayout->addWidget(widget);
+    m_centralWidget = widget;
+}
+
+bool FramelessWindow::nativeEvent(const QByteArray &eventType, void *message, long *result)
+{
+#ifdef _WIN32
+    // https://stackoverflow.com/questions/43505580/qt-windows-resizable-frameless-window
+    // Too lazy to do this now.. just stackoverflow it and did a copy and paste..
+    Q_UNUSED(eventType)
+    MSG* msg = static_cast<MSG*>(message);
+
+    if (msg->message == WM_NCHITTEST) {
+        if (isMaximized()) {
+            return false;
+        }
+
+        *result = 0;
+        const LONG borderWidth = 8;
+        RECT winrect;
+        GetWindowRect(reinterpret_cast<HWND>(winId()), &winrect);
+
+        // must be short to correctly work with multiple monitors (negative coordinates)
+        short x = msg->lParam & 0x0000FFFF;
+        short y = (msg->lParam & 0xFFFF0000) >> 16;
+
+        bool resizeWidth = minimumWidth() != maximumWidth();
+        bool resizeHeight = minimumHeight() != maximumHeight();
+        if (resizeWidth) {
+            //left border
+            if (x >= winrect.left && x < winrect.left + borderWidth) {
+                *result = HTLEFT;
+            }
+            //right border
+            if (x < winrect.right && x >= winrect.right - borderWidth) {
+                *result = HTRIGHT;
+            }
+        }
+        if (resizeHeight) {
+            //bottom border
+            if (y < winrect.bottom && y >= winrect.bottom - borderWidth) {
+                *result = HTBOTTOM;
+            }
+            //top border
+            if (y >= winrect.top && y < winrect.top + borderWidth) {
+                *result = HTTOP;
+            }
+        }
+        if (resizeWidth && resizeHeight) {
+            //bottom left corner
+            if (x >= winrect.left && x < winrect.left + borderWidth &&
+                    y < winrect.bottom && y >= winrect.bottom - borderWidth)
+            {
+                *result = HTBOTTOMLEFT;
+            }
+            //bottom right corner
+            if (x < winrect.right && x >= winrect.right - borderWidth &&
+                    y < winrect.bottom && y >= winrect.bottom - borderWidth)
+            {
+                *result = HTBOTTOMRIGHT;
+            }
+            //top left corner
+            if (x >= winrect.left && x < winrect.left + borderWidth &&
+                    y >= winrect.top && y < winrect.top + borderWidth)
+            {
+                *result = HTTOPLEFT;
+            }
+            //top right corner
+            if (x < winrect.right && x >= winrect.right - borderWidth &&
+                    y >= winrect.top && y < winrect.top + borderWidth)
+            {
+                *result = HTTOPRIGHT;
+            }
+        }
+
+        if (*result != 0)
+            return true;
+
+        QWidget *action = QApplication::widgetAt(QCursor::pos());
+        if (action == this) {
+            *result = HTCAPTION;
+            return true;
+        }
+    }
+
+    return false;
+#else
+    return QWidget::nativeEvent(eventType, message, result);
+#endif // _WIN32
+}

app/framelesswindow.h

@@ -0,0 +1,26 @@
+#ifndef FRAMELESSWINDOW_H
+#define FRAMELESSWINDOW_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QVBoxLayout;
+QT_END_NAMESPACE
+
+class FramelessWindow : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit FramelessWindow(QWidget *parent = nullptr);
+
+    void setCentralWidget(QWidget * widget);
+
+protected:
+    bool nativeEvent(const QByteArray& eventType, void* message, long* result) override;
+
+private:
+    QVBoxLayout * m_centralLayout = nullptr;
+    QWidget * m_centralWidget = nullptr; // just a pointer, doesn't take the ownership.
+};
+
+#endif // FRAMELESSWINDOW_H

app/graphicsscene.cpp

@@ -24,7 +24,9 @@ GraphicsScene::~GraphicsScene()
 void GraphicsScene::showImage(const QPixmap &pixmap)
 {
     this->clear();
-    m_theThing = this->addPixmap(pixmap);
+    QGraphicsPixmapItem * pixmapItem = this->addPixmap(pixmap);
+    pixmapItem->setShapeMode(QGraphicsPixmapItem::BoundingRectShape);
+    m_theThing = pixmapItem;
     this->setSceneRect(m_theThing->boundingRect());
 }
 
@@ -46,7 +48,7 @@ void GraphicsScene::showSvg(const QString &filepath)
     this->setSceneRect(m_theThing->boundingRect());
 }
 
-void GraphicsScene::showGif(const QString &filepath)
+void GraphicsScene::showAnimated(const QString &filepath)
 {
     this->clear();
     QMovie * movie = new QMovie(filepath);
@@ -60,6 +62,17 @@ void GraphicsScene::showGif(const QString &filepath)
     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());

app/graphicsscene.h

@@ -13,7 +13,9 @@ public:
     void showImage(const QPixmap &pixmap);
     void showText(const QString &text);
     void showSvg(const QString &filepath);
-    void showGif(const QString &filepath);
+    void showAnimated(const QString &filepath);
+
+    bool trySetTransformationMode(Qt::TransformationMode mode);
 
     QPixmap renderToPixmap();
 

app/graphicsview.cpp

@@ -7,6 +7,14 @@
 #include <QScrollBar>
 #include <QMimeData>
 #include <QImageReader>
+#include <QStyleOptionGraphicsItem>
+
+// TODO: remove this once we drop older Qt support.
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
+#define COMPAT_CONSTCOLOR constexpr
+#else
+#define COMPAT_CONSTCOLOR const
+#endif
 
 GraphicsView::GraphicsView(QWidget *parent)
     : QGraphicsView (parent)
@@ -25,25 +33,36 @@ GraphicsView::GraphicsView(QWidget *parent)
     connect(verticalScrollBar(), &QScrollBar::valueChanged, this, &GraphicsView::viewportRectChanged);
 }
 
-void GraphicsView::showFileFromUrl(const QUrl &url, bool doRequestGallery)
+void GraphicsView::showFileFromPath(const QString &filePath, bool doRequestGallery)
 {
-    emit navigatorViewRequired(false, 0);
-
-    QString filePath(url.toLocalFile());
+    emit navigatorViewRequired(false, transform());
 
     if (filePath.endsWith(".svg")) {
         showSvg(filePath);
-    } else if (filePath.endsWith(".gif")) {
-        showGif(filePath);
     } else {
         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()) {
+            doRequestGallery = false;
             showText(tr("File is not a valid image"));
+        } else if (imageReader.supportsAnimation() && imageReader.imageCount() > 1) {
+            showAnimated(filePath);
+        } else if (!imageReader.canRead()) {
+            doRequestGallery = false;
+            showText(tr("Image data is invalid or currently unsupported"));
         } else {
-            showImage(QPixmap::fromImageReader(&imageReader));
+            const QPixmap & pixmap = QPixmap::fromImageReader(&imageReader);
+            if (pixmap.isNull()) {
+                doRequestGallery = false;
+                showText(tr("Image data is invalid or currently unsupported"));
+            } else {
+                showImage(pixmap);
+            }
         }
     }
 
@@ -80,10 +99,10 @@ void GraphicsView::showSvg(const QString &filepath)
     checkAndDoFitInView();
 }
 
-void GraphicsView::showGif(const QString &filepath)
+void GraphicsView::showAnimated(const QString &filepath)
 {
     resetTransform();
-    scene()->showGif(filepath);
+    scene()->showAnimated(filepath);
     checkAndDoFitInView();
 }
 
@@ -99,17 +118,11 @@ void GraphicsView::setScene(GraphicsScene *scene)
 
 qreal GraphicsView::scaleFactor() const
 {
-    int angle = static_cast<int>(m_rotateAngle);
-    if (angle == 0 || angle == 180) {
-        return qAbs(transform().m11());
-    } else {
-        return qAbs(transform().m12());
-    }
+    return QStyleOptionGraphicsItem::levelOfDetailFromTransform(transform());
 }
 
 void GraphicsView::resetTransform()
 {
-    m_rotateAngle = 0;
     QGraphicsView::resetTransform();
 }
 
@@ -117,38 +130,76 @@ void GraphicsView::zoomView(qreal scaleFactor)
 {
     m_enableFitInView = false;
     scale(scaleFactor, scaleFactor);
-    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), m_rotateAngle);
+    applyTransformationModeByScaleFactor();
+    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
+}
+
+// This is always according to user's view.
+// the direction of the rotation will NOT be clockwise because the y-axis points downwards.
+void GraphicsView::rotateView(bool clockwise)
+{
+    resetScale();
+
+    QTransform tf(0,                  clockwise ? 1 : -1, 0,
+                  clockwise ? -1 : 1, 0,                  0,
+                  0,                  0,                  1);
+    tf = transform() * tf;
+    setTransform(tf);
+}
+
+void GraphicsView::flipView(bool horizontal)
+{
+    QTransform tf(horizontal ? -1 : 1, 0,                   0,
+                  0,                   horizontal ? 1 : -1, 0,
+                  0,                   0,                   1);
+    tf = transform() * tf;
+    setTransform(tf);
+
+    // Ensure the navigation view is also flipped.
+    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
 }
 
 void GraphicsView::resetScale()
 {
-    resetWithScaleAndRotate(1, m_rotateAngle);
-    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), m_rotateAngle);
-}
-
-void GraphicsView::rotateView(qreal rotateAngel)
-{
-    m_rotateAngle += rotateAngel;
-    m_rotateAngle = static_cast<int>(m_rotateAngle) % 360;
-    resetWithScaleAndRotate(1, m_rotateAngle);
+    setTransform(resetScale(transform()));
+    emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
 }
 
 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()
+inline double zeroOrOne(double number)
 {
-    setCheckerboardEnabled(!m_checkerboardEnabled);
+    return qFuzzyIsNull(number) ? 0 : (number > 0 ? 1 : -1);
+}
+
+// Note: this only works if we only have 90 degree based rotation
+//       and no shear/translate.
+QTransform GraphicsView::resetScale(const QTransform & orig)
+{
+    return QTransform(zeroOrOne(orig.m11()), zeroOrOne(orig.m12()),
+                      zeroOrOne(orig.m21()), zeroOrOne(orig.m22()),
+                      orig.dx(),             orig.dy());
+}
+
+void GraphicsView::toggleCheckerboard(bool invertCheckerboardColor)
+{
+    setCheckerboardEnabled(!m_checkerboardEnabled, invertCheckerboardColor);
 }
 
 void GraphicsView::mousePressEvent(QMouseEvent *event)
@@ -191,17 +242,18 @@ void GraphicsView::wheelEvent(QWheelEvent *event)
 void GraphicsView::resizeEvent(QResizeEvent *event)
 {
     if (m_enableFitInView) {
-        QTransform tf;
-        tf.rotate(m_rotateAngle);
-        if (isThingSmallerThanWindowWith(tf) && scaleFactor() >= 1) {
+        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
             // user resize down the window again.
+        } else if (originalSizeSmallerThanWindow && scaleFactor() < 1) {
+            resetScale();
         } else {
             fitInView(sceneRect(), Qt::KeepAspectRatio);
         }
     } else {
-        emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), m_rotateAngle);
+        emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
     }
     return QGraphicsView::resizeEvent(event);
 }
@@ -213,9 +265,9 @@ 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);
 }
@@ -238,7 +290,7 @@ void GraphicsView::dropEvent(QDropEvent *event)
         if (urls.isEmpty()) {
             showText(tr("File url list is empty"));
         } else {
-            showFileFromUrl(urls.first());
+            showFileFromPath(urls.first().toLocalFile(), true);
         }
     } else if (mimeData->hasImage()) {
         QImage img = qvariant_cast<QImage>(mimeData->imageData());
@@ -279,17 +331,19 @@ bool GraphicsView::shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) con
     return false;
 }
 
-void GraphicsView::setCheckerboardEnabled(bool enabled)
+void GraphicsView::setCheckerboardEnabled(bool enabled, bool invertColor)
 {
     m_checkerboardEnabled = enabled;
+    m_isLastCheckerboardColorInverted = invertColor;
     if (m_checkerboardEnabled) {
         // Prepare background check-board pattern
         QPixmap tilePixmap(0x20, 0x20);
-        tilePixmap.fill(QColor(35, 35, 35, 110));
+        tilePixmap.fill(invertColor ? QColor(220, 220, 220, 170) : QColor(35, 35, 35, 170));
         QPainter tilePainter(&tilePixmap);
-        QColor color(40, 40, 40, 110);
-        tilePainter.fillRect(0, 0, 0x10, 0x10, color);
-        tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, color);
+        COMPAT_CONSTCOLOR QColor color(45, 45, 45, 170);
+        COMPAT_CONSTCOLOR QColor invertedColor(210, 210, 210, 170);
+        tilePainter.fillRect(0, 0, 0x10, 0x10, invertColor ? invertedColor : color);
+        tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, invertColor ? invertedColor : color);
         tilePainter.end();
 
         setBackgroundBrush(tilePixmap);
@@ -298,9 +352,11 @@ void GraphicsView::setCheckerboardEnabled(bool enabled)
     }
 }
 
-void GraphicsView::resetWithScaleAndRotate(qreal scaleFactor, qreal rotateAngle)
+void GraphicsView::applyTransformationModeByScaleFactor()
 {
-    QGraphicsView::resetTransform();
-    scale(scaleFactor, scaleFactor);
-    rotate(rotateAngle);
+    if (this->scaleFactor() < 1) {
+        scene()->trySetTransformationMode(Qt::SmoothTransformation);
+    } else {
+        scene()->trySetTransformationMode(Qt::FastTransformation);
+    }
 }

app/graphicsview.h

@@ -11,13 +11,13 @@ class GraphicsView : public QGraphicsView
 public:
     GraphicsView(QWidget *parent = nullptr);
 
-    void showFileFromUrl(const QUrl &url, bool requestGallery = false);
+    void showFileFromPath(const QString &filePath, 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);
+    void showAnimated(const QString &filepath);
 
     GraphicsScene * scene() const;
     void setScene(GraphicsScene *scene);
@@ -26,19 +26,22 @@ public:
 
     void resetTransform();
     void zoomView(qreal scaleFactor);
+    void rotateView(bool clockwise = true);
+    void flipView(bool horizontal = true);
     void resetScale();
-    void rotateView(qreal rotateAngel);
     void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
 
-    void checkAndDoFitInView();
+    void checkAndDoFitInView(bool markItOnAnyway = true);
+
+    static QTransform resetScale(const QTransform & orig);
 
 signals:
-    void navigatorViewRequired(bool required, qreal angle);
+    void navigatorViewRequired(bool required, QTransform transform);
     void viewportRectChanged();
     void requestGallery(const QString &filePath);
 
 public slots:
-    void toggleCheckerboard();
+    void toggleCheckerboard(bool invertCheckerboardColor = false);
 
 private:
     void mousePressEvent(QMouseEvent * event) override;
@@ -53,13 +56,12 @@ private:
 
     bool isThingSmallerThanWindowWith(const QTransform &transform) const;
     bool shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) const;
-    void setCheckerboardEnabled(bool enabled);
-
-    void resetWithScaleAndRotate(qreal scaleFactor, qreal rotateAngle);
+    void setCheckerboardEnabled(bool enabled, bool invertColor = false);
+    void applyTransformationModeByScaleFactor();
 
     bool m_enableFitInView = false;
     bool m_checkerboardEnabled = false;
-    qreal m_rotateAngle = 0;
+    bool m_isLastCheckerboardColorInverted = false;
 };
 
 #endif // GRAPHICSVIEW_H

app/main.cpp

@@ -1,4 +1,7 @@
 #include "mainwindow.h"
+
+#include "playlistmanager.h"
+
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDir>
@@ -21,8 +24,11 @@ int main(int argc, char *argv[])
 #else
     qmDir = QT_STRINGIFY(QM_FILE_INSTALL_DIR);
 #endif
-    translator.load(QString("PineapplePictures_%1").arg(QLocale::system().name()), qmDir);
-    a.installTranslator(&translator);
+    if (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;
@@ -31,18 +37,12 @@ int main(int argc, char *argv[])
 
     parser.process(a);
 
-    QStringList urlStrList = parser.positionalArguments();
-    QList<QUrl> urlList;
-    for (const QString & str : urlStrList) {
-        QUrl url = QUrl::fromLocalFile(str);
-        if (url.isValid()) {
-            urlList.append(url);
-        }
-    }
-
     MainWindow w;
     w.show();
 
+    QStringList urlStrList = parser.positionalArguments();
+    QList<QUrl> && urlList = PlaylistManager::convertToUrlList(urlStrList);
+
     if (!urlList.isEmpty()) {
         w.showUrls(urlList);
         w.adjustWindowSizeBySceneRect();

app/mainwindow.cpp

@@ -0,0 +1,656 @@
+#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 "aboutdialog.h"
+#include "metadatamodel.h"
+#include "metadatadialog.h"
+#include "actionmanager.h"
+#include "playlistmanager.h"
+
+#include <QMouseEvent>
+#include <QMovie>
+#include <QDebug>
+#include <QGraphicsTextItem>
+#include <QApplication>
+#include <QStyle>
+#include <QScreen>
+#include <QMenu>
+#include <QShortcut>
+#include <QClipboard>
+#include <QMimeData>
+#include <QWindow>
+#include <QTimer>
+
+MainWindow::MainWindow(QWidget *parent)
+    : FramelessWindow(parent)
+    , m_am(new ActionManager)
+    , m_pm(new PlaylistManager(PlaylistManager::PL_SAMEFOLDER, this))
+{
+    if (Settings::instance()->stayOnTop()) {
+        this->setWindowFlag(Qt::WindowStaysOnTopHint);
+    }
+
+    this->setAttribute(Qt::WA_TranslucentBackground, true);
+    this->setMinimumSize(350, 330);
+    this->setWindowIcon(QIcon(":/icons/app-icon.svg"));
+    this->setMouseTracking(true);
+
+    m_pm->setAutoLoadFilterSuffix({"*.jpg", "*.jpeg", "*.jfif", "*.png", "*.gif", "*.svg", "*.bmp", "*.webp"});
+
+    m_fadeOutAnimation = new QPropertyAnimation(this, "windowOpacity");
+    m_fadeOutAnimation->setDuration(300);
+    m_fadeOutAnimation->setStartValue(1);
+    m_fadeOutAnimation->setEndValue(0);
+    m_floatUpAnimation = new QPropertyAnimation(this, "geometry");
+    m_floatUpAnimation->setDuration(300);
+    m_floatUpAnimation->setEasingCurve(QEasingCurve::OutCirc);
+    m_exitAnimationGroup = new QParallelAnimationGroup;
+    m_exitAnimationGroup->addAnimation(m_fadeOutAnimation);
+    m_exitAnimationGroup->addAnimation(m_floatUpAnimation);
+    connect(m_exitAnimationGroup, &QParallelAnimationGroup::finished,
+            this, &QWidget::close);
+
+    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->setScene(scene);
+    m_gv->setMainView(m_graphicsView);
+    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
+
+    connect(m_graphicsView, &GraphicsView::navigatorViewRequired,
+            this, [ = ](bool required, QTransform tf){
+        m_gv->setTransform(GraphicsView::resetScale(tf));
+        m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
+        m_gv->setVisible(required);
+        m_gv->updateMainViewportRegion();
+    });
+
+    connect(m_graphicsView, &GraphicsView::viewportRectChanged,
+            m_gv, &NavigatorView::updateMainViewportRegion);
+
+    connect(m_graphicsView, &GraphicsView::requestGallery,
+            this, &MainWindow::loadGalleryBySingleLocalFile);
+
+    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, &MainWindow::toggleMaximize);
+    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomInBtnClicked,
+            this, &MainWindow::on_actionZoomIn_triggered);
+    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomOutBtnClicked,
+            this, &MainWindow::on_actionZoomOut_triggered);
+    connect(m_bottomButtonGroup, &BottomButtonGroup::toggleCheckerboardBtnClicked,
+            this, &MainWindow::toggleCheckerboard);
+    connect(m_bottomButtonGroup, &BottomButtonGroup::rotateRightBtnClicked,
+            this, [ = ](){
+        m_graphicsView->rotateView();
+        m_graphicsView->checkAndDoFitInView();
+        m_gv->setVisible(false);
+    });
+
+    m_bottomButtonGroup->setOpacity(0, false);
+    m_gv->setOpacity(0, false);
+    m_closeButton->setOpacity(0, false);
+
+    connect(m_pm, &PlaylistManager::loaded, this, [this](int galleryFileCount) {
+        m_prevButton->setVisible(galleryFileCount > 1);
+        m_nextButton->setVisible(galleryFileCount > 1);
+    });
+
+    QShortcut * prevPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageUp), this);
+    connect(prevPictureShorucut, &QShortcut::activated,
+            this, &MainWindow::galleryPrev);
+
+    QShortcut * nextPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageDown), this);
+    connect(nextPictureShorucut, &QShortcut::activated,
+            this, &MainWindow::galleryNext);
+
+    QShortcut * fullscreenShorucut = new QShortcut(QKeySequence(QKeySequence::FullScreen), this);
+    connect(fullscreenShorucut, &QShortcut::activated,
+            this, &MainWindow::toggleFullscreen);
+
+    m_am->setupAction(this);
+
+    centerWindow();
+
+    QTimer::singleShot(0, this, [this](){
+        m_am->setupShortcuts();
+    });
+}
+
+MainWindow::~MainWindow()
+{
+
+}
+
+void MainWindow::showUrls(const QList<QUrl> &urls)
+{
+    if (!urls.isEmpty()) {
+        if (urls.count() == 1) {
+            m_graphicsView->showFileFromPath(urls.first().toLocalFile(), true);
+        } else {
+            m_graphicsView->showFileFromPath(urls.first().toLocalFile(), false);
+            m_pm->setPlaylist(urls);
+            m_pm->setCurrentIndex(0);
+        }
+    } else {
+        m_graphicsView->showText(tr("File url list is empty"));
+        return;
+    }
+
+    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
+}
+
+void MainWindow::adjustWindowSizeBySceneRect()
+{
+    QSize sceneSize = m_graphicsView->sceneRect().toRect().size();
+    QSize sceneSizeWithMargins = sceneSize + QSize(130, 125);
+
+    if (m_graphicsView->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) {
+            // we can show the picture by increase the window size.
+            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
+            // just call resetScale() here to ensure the thing is no longer scaled.
+            m_graphicsView->resetScale();
+            centerWindow();
+        } else {
+            // toggle maximum
+            showMaximized();
+        }
+    }
+}
+
+// can be empty if it is NOT from a local file.
+QUrl MainWindow::currentImageFileUrl() const
+{
+    QUrl url;
+    std::tie(std::ignore, url) = m_pm->currentFileUrl();
+
+    return url;
+}
+
+void MainWindow::clearGallery()
+{
+    m_pm->clear();
+}
+
+void MainWindow::loadGalleryBySingleLocalFile(const QString &path)
+{
+    m_pm->setCurrentFile(path);
+}
+
+void MainWindow::galleryPrev()
+{
+    int index;
+    QString filePath;
+    std::tie(index, filePath) = m_pm->previousFile();
+
+    if (index >= 0) {
+        m_graphicsView->showFileFromPath(filePath, false);
+        m_pm->setCurrentIndex(index);
+    }
+}
+
+void MainWindow::galleryNext()
+{
+    int index;
+    QString filePath;
+    std::tie(index, filePath) = m_pm->nextFile();
+
+    if (index >= 0) {
+        m_graphicsView->showFileFromPath(filePath, false);
+        m_pm->setCurrentIndex(index);
+    }
+}
+
+void MainWindow::showEvent(QShowEvent *event)
+{
+    updateWidgetsPosition();
+
+    return FramelessWindow::showEvent(event);
+}
+
+void MainWindow::enterEvent(QEvent *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()) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        if (!window()->windowHandle()->startSystemMove()) {
+            move(event->globalPos() - m_oldMousePos);
+        }
+#else
+        move(event->globalPos() - m_oldMousePos);
+#endif // QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        event->accept();
+    }
+
+    return FramelessWindow::mouseMoveEvent(event);
+}
+
+void MainWindow::mouseReleaseEvent(QMouseEvent *event)
+{
+    m_clickedOnWindow = false;
+
+    return FramelessWindow::mouseReleaseEvent(event);
+}
+
+void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
+{
+    switch (Settings::instance()->doubleClickBehavior()) {
+    case ActionCloseWindow:
+        quitAppAction();
+        event->accept();
+        break;
+    case ActionMaximizeWindow:
+        toggleMaximize();
+        event->accept();
+        break;
+    case ActionDoNothing:
+        break;
+    }
+
+    // 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)
+{
+    QPoint numDegrees = event->angleDelta() / 8;
+    bool needWeelEvent = false, wheelUp = false;
+    bool actionIsZoom = event->modifiers().testFlag(Qt::ControlModifier)
+            || Settings::instance()->mouseWheelBehavior() == ActionZoomImage;
+
+    // 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) {
+        needWeelEvent = true;
+        wheelUp = numDegrees.y() > 0;
+    }
+
+    if (needWeelEvent) {
+        if (actionIsZoom) {
+            if (wheelUp) {
+                on_actionZoomIn_triggered();
+            } else {
+                on_actionZoomOut_triggered();
+            }
+        } else {
+            if (wheelUp) {
+                galleryPrev();
+            } else {
+                galleryNext();
+            }
+        }
+        event->accept();
+    } else {
+        FramelessWindow::wheelEvent(event);
+    }
+}
+
+void MainWindow::resizeEvent(QResizeEvent *event)
+{
+    updateWidgetsPosition();
+
+    return FramelessWindow::resizeEvent(event);
+}
+
+void MainWindow::contextMenuEvent(QContextMenuEvent *event)
+{
+    QMenu * menu = new QMenu;
+    QMenu * copyMenu = new QMenu(tr("&Copy"));
+    QUrl currentFileUrl = currentImageFileUrl();
+    QImage clipboardImage;
+    QUrl clipboardFileUrl;
+
+    QAction * copyPixmap = m_am->actionCopyPixmap;
+    QAction * copyFilePath = m_am->actionCopyFilePath;
+
+    copyMenu->addAction(copyPixmap);
+    if (currentFileUrl.isValid()) {
+        copyMenu->addAction(copyFilePath);
+    }
+
+    QAction * paste = m_am->actionPaste;
+
+    QAction * stayOnTopMode = m_am->actionToggleStayOnTop;
+    stayOnTopMode->setCheckable(true);
+    stayOnTopMode->setChecked(stayOnTop());
+
+    QAction * protectedMode = m_am->actionToggleProtectMode;
+    protectedMode->setCheckable(true);
+    protectedMode->setChecked(m_protectedMode);
+
+    QAction * toggleSettings = m_am->actionSettings;
+    QAction * helpAction = m_am->actionHelp;
+    QAction * propertiesAction = m_am->actionProperties;
+
+    if (copyMenu->actions().count() == 1) {
+        menu->addActions(copyMenu->actions());
+    } else {
+        menu->addMenu(copyMenu);
+    }
+
+    if (canPaste()) {
+        menu->addAction(paste);
+    }
+
+    menu->addSeparator();
+
+    menu->addAction(m_am->actionHorizontalFlip);
+
+    menu->addSeparator();
+    menu->addAction(stayOnTopMode);
+    menu->addAction(protectedMode);
+    menu->addSeparator();
+    menu->addAction(toggleSettings);
+    menu->addAction(helpAction);
+    if (currentFileUrl.isValid()) {
+        menu->addSeparator();
+        menu->addAction(propertiesAction);
+    }
+    menu->exec(mapToGlobal(event->pos()));
+    menu->deleteLater();
+    copyMenu->deleteLater();
+
+    return FramelessWindow::contextMenuEvent(event);
+}
+
+void MainWindow::centerWindow()
+{
+    this->setGeometry(
+        QStyle::alignedRect(
+            Qt::LeftToRight,
+            Qt::AlignCenter,
+            this->size(),
+            qApp->screenAt(QCursor::pos())->geometry()
+        )
+    );
+}
+
+void MainWindow::closeWindow()
+{
+    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();
+}
+
+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());
+}
+
+void MainWindow::toggleCheckerboard()
+{
+    m_graphicsView->toggleCheckerboard(QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ShiftModifier));
+}
+
+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()
+{
+    setWindowFlag(Qt::WindowStaysOnTopHint, !stayOnTop());
+    show();
+}
+
+bool MainWindow::stayOnTop()
+{
+    return windowFlags().testFlag(Qt::WindowStaysOnTopHint);
+}
+
+bool MainWindow::canPaste()
+{
+    const QMimeData * clipboardData = QApplication::clipboard()->mimeData();
+    if (clipboardData->hasImage()) {
+        return true;
+    } else if (clipboardData->hasText()) {
+        QString clipboardText(clipboardData->text());
+        if (clipboardText.startsWith("PICTURE:")) {
+            QString maybeFilename(clipboardText.mid(8));
+            if (QFile::exists(maybeFilename)) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+void MainWindow::quitAppAction(bool force)
+{
+    if (!m_protectedMode || force) {
+        closeWindow();
+    }
+}
+
+void MainWindow::toggleFullscreen()
+{
+    if (isFullScreen()) {
+        showNormal();
+    } else {
+        showFullScreen();
+    }
+}
+
+void MainWindow::toggleMaximize()
+{
+    if (isMaximized()) {
+        showNormal();
+    } else {
+        showMaximized();
+    }
+}
+
+QSize MainWindow::sizeHint() const
+{
+    return QSize(710, 530);
+}
+
+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_actionCopyPixmap_triggered()
+{
+    QClipboard *cb = QApplication::clipboard();
+    cb->setPixmap(m_graphicsView->scene()->renderToPixmap());
+}
+
+void MainWindow::on_actionCopyFilePath_triggered()
+{
+    QUrl currentFileUrl(currentImageFileUrl());
+    if (currentFileUrl.isValid()) {
+        QClipboard *cb = QApplication::clipboard();
+        cb->setText(currentFileUrl.toLocalFile());
+    }
+}
+
+void MainWindow::on_actionPaste_triggered()
+{
+    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);
+            }
+        }
+    }
+
+    if (!clipboardImage.isNull()) {
+        m_graphicsView->showImage(clipboardImage);
+        clearGallery();
+    } else if (clipboardFileUrl.isValid()) {
+        QString localFile(clipboardFileUrl.toLocalFile());
+        m_graphicsView->showFileFromPath(localFile, true);
+        m_pm->setCurrentFile(localFile);
+    }
+}
+
+void MainWindow::on_actionToggleCheckerboard_triggered()
+{
+    m_graphicsView->toggleCheckerboard();
+}
+
+void MainWindow::on_actionToggleStayOnTop_triggered()
+{
+    toggleStayOnTop();
+}
+
+void MainWindow::on_actionToggleProtectMode_triggered()
+{
+    toggleProtectedMode();
+}
+
+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_actionQuitApp_triggered()
+{
+    quitAppAction(false);
+}

app/mainwindow.h

@@ -1,7 +1,8 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
-#include <QMainWindow>
+#include "framelesswindow.h"
+
 #include <QParallelAnimationGroup>
 #include <QPropertyAnimation>
 #include <QPushButton>
@@ -11,11 +12,13 @@ class QGraphicsOpacityEffect;
 class QGraphicsView;
 QT_END_NAMESPACE
 
+class ActionManager;
+class PlaylistManager;
 class ToolButton;
 class GraphicsView;
 class NavigatorView;
 class BottomButtonGroup;
-class MainWindow : public QMainWindow
+class MainWindow : public FramelessWindow
 {
     Q_OBJECT
 
@@ -27,6 +30,7 @@ public:
     void adjustWindowSizeBySceneRect();
     QUrl currentImageFileUrl() const;
 
+    void clearGallery();
     void loadGalleryBySingleLocalFile(const QString &path);
     void galleryPrev();
     void galleryNext();
@@ -43,30 +47,52 @@ protected slots:
     void resizeEvent(QResizeEvent *event) override;
     void contextMenuEvent(QContextMenuEvent *event) override;
 
-    bool nativeEvent(const QByteArray& eventType, void* message, long* result) override;
-
     void centerWindow();
     void closeWindow();
     void updateWidgetsPosition();
+    void toggleCheckerboard();
     void toggleProtectedMode();
     void toggleStayOnTop();
     bool stayOnTop();
+    bool canPaste();
     void quitAppAction(bool force = false);
+    void toggleFullscreen();
+    void toggleMaximize();
+
+protected:
+    QSize sizeHint() const override;
+
+private slots:
+    void on_actionZoomIn_triggered();
+    void on_actionZoomOut_triggered();
+    void on_actionHorizontalFlip_triggered();
+    void on_actionCopyPixmap_triggered();
+    void on_actionCopyFilePath_triggered();
+    void on_actionPaste_triggered();
+    void on_actionToggleCheckerboard_triggered();
+    void on_actionToggleStayOnTop_triggered();
+    void on_actionToggleProtectMode_triggered();
+    void on_actionSettings_triggered();
+    void on_actionHelp_triggered();
+    void on_actionProperties_triggered();
+    void on_actionQuitApp_triggered();
 
 private:
+    ActionManager *m_am;
+    PlaylistManager *m_pm;
+
     QPoint m_oldMousePos;
     QPropertyAnimation *m_fadeOutAnimation;
     QPropertyAnimation *m_floatUpAnimation;
     QParallelAnimationGroup *m_exitAnimationGroup;
     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;
-
-    QList<QUrl> m_files;
-    int m_currentFileIndex = -1;
 };
 
 #endif // MAINWINDOW_H

app/metadatadialog.cpp

@@ -0,0 +1,106 @@
+#include "metadatadialog.h"
+
+#include <QDialogButtonBox>
+#include <QPainter>
+#include <QStyledItemDelegate>
+#include <QTreeView>
+#include <QVBoxLayout>
+#include <QHeaderView>
+
+#include "metadatamodel.h"
+
+class PropertyTreeView : public QTreeView
+{
+public:
+    explicit PropertyTreeView(QWidget* parent) : QTreeView(parent) {}
+    ~PropertyTreeView() {}
+
+protected:
+    void rowsInserted(const QModelIndex& parent, int start, int end) override
+    {
+        QTreeView::rowsInserted(parent, start, end);
+        if (!parent.isValid()) {
+            // we are inserting a section group
+            for (int row = start; row <= end; ++row) {
+                setupSection(row);
+            }
+        } else {
+            // we are inserting a property
+            setRowHidden(parent.row(), QModelIndex(), false);
+        }
+    }
+
+    void reset() override
+    {
+        QTreeView::reset();
+        if (model()) {
+            for (int row = 0; row < model()->rowCount(); ++row) {
+                setupSection(row);
+            }
+        }
+    }
+
+private:
+    void setupSection(int row)
+    {
+        expand(model()->index(row, 0));
+        setFirstColumnSpanned(row, QModelIndex(), true);
+        setRowHidden(row, QModelIndex(), !model()->hasChildren(model()->index(row, 0)));
+    }
+};
+
+class PropertyTreeItemDelegate : public QStyledItemDelegate
+{
+public:
+    PropertyTreeItemDelegate(QObject* parent)
+        : QStyledItemDelegate(parent)
+    {}
+
+protected:
+    void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const override
+    {
+        QStyleOptionViewItem opt = option;
+        if (!index.parent().isValid()) {
+            opt.font.setBold(true);
+            opt.features.setFlag(QStyleOptionViewItem::Alternate);
+        }
+        QStyledItemDelegate::paint(painter, opt, index);
+    }
+};
+
+MetadataDialog::MetadataDialog(QWidget *parent)
+    : QDialog(parent)
+    , m_treeView(new PropertyTreeView(this))
+{
+    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);
+}
+
+MetadataDialog::~MetadataDialog()
+{
+
+}
+
+void MetadataDialog::setMetadataModel(MetadataModel * model)
+{
+    m_treeView->setModel(model);
+}
+
+QSize MetadataDialog::sizeHint() const
+{
+    return QSize(520, 350);
+}

app/metadatadialog.h

@@ -0,0 +1,26 @@
+#ifndef METADATADIALOG_H
+#define METADATADIALOG_H
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QTreeView;
+QT_END_NAMESPACE
+
+class MetadataModel;
+class MetadataDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit MetadataDialog(QWidget * parent);
+    ~MetadataDialog() override;
+
+    void setMetadataModel(MetadataModel * model);
+
+    QSize sizeHint() const override;
+
+private:
+    QTreeView * m_treeView = nullptr;
+};
+
+#endif // METADATADIALOG_H

app/metadatamodel.cpp

@@ -0,0 +1,307 @@
+#include "metadatamodel.h"
+#include "exiv2wrapper.h"
+
+#include <QDebug>
+#include <QDateTime>
+#include <QFileInfo>
+#include <QImageReader>
+
+MetadataModel::MetadataModel(QObject *parent)
+    : QAbstractItemModel(parent)
+{
+
+}
+
+MetadataModel::~MetadataModel()
+{
+
+}
+
+void MetadataModel::setFile(const QString &imageFilePath)
+{
+    QFileInfo fileInfo(imageFilePath);
+    // It'll be fine if we don't re-use the image reader we pass to the graphics scene for now.
+    QImageReader imgReader(imageFilePath);
+    imgReader.setAutoTransform(true);
+    imgReader.setDecideFormatFromContent(true);
+
+    const QString & itemTypeString = tr("%1 File").arg(QString(imgReader.format().toUpper()));
+    const QString & sizeString = QLocale().formattedDataSize(fileInfo.size());
+    const QString & birthTimeString = QLocale().toString(fileInfo.birthTime(), QLocale::LongFormat);
+    const QString & lastModifiedTimeString = QLocale().toString(fileInfo.lastModified(), QLocale::LongFormat);
+    const QString & imageDimensionsString = imageSize(imgReader.size());
+    const QString & imageRatioString = imageSizeRatio(imgReader.size());
+
+    appendSection(QStringLiteral("Description"), tr("Description", "Section name."));
+    appendSection(QStringLiteral("Origin"), tr("Origin", "Section name."));
+    appendSection(QStringLiteral("Image"), tr("Image", "Section name."));
+    appendSection(QStringLiteral("Camera"), tr("Camera", "Section name."));
+    appendSection(QStringLiteral("AdvancedPhoto"), tr("Advanced photo", "Section name."));
+    appendSection(QStringLiteral("GPS"), tr("GPS", "Section name."));
+    appendSection(QStringLiteral("File"), tr("File", "Section name."));
+
+    appendProperty(QStringLiteral("Image"), QStringLiteral("Image.Dimensions"),
+                   tr("Dimensions"), imageDimensionsString);
+    appendProperty(QStringLiteral("Image"), QStringLiteral("Image.SizeRatio"),
+                   tr("Aspect ratio"), imageRatioString);
+    if (imgReader.supportsAnimation() && imgReader.imageCount() > 1) {
+        appendProperty(QStringLiteral("Image"), QStringLiteral("Image.FrameCount"),
+                       tr("Frame count"), QString::number(imgReader.imageCount()));
+    }
+
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.Name"),
+                   tr("Name"), fileInfo.fileName());
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.ItemType"),
+                   tr("Item type"), itemTypeString);
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.Path"),
+                   tr("Folder path"), fileInfo.path());
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.Size"),
+                   tr("Size"), sizeString);
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.CreatedTime"),
+                   tr("Date created"), birthTimeString);
+    appendProperty(QStringLiteral("File"), QStringLiteral("File.LastModified"),
+                   tr("Date modified"), lastModifiedTimeString);
+
+    Exiv2Wrapper wrapper;
+    if (wrapper.load(imageFilePath)) {
+        wrapper.cacheSections();
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Description"),
+                                  QStringLiteral("Exif.Image.Rating"), tr("Rating"));
+        appendPropertyIfNotEmpty(QStringLiteral("Description"), QStringLiteral("Description.Comments"),
+                                 tr("Comments"), wrapper.comment());
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Origin"),
+                                  QStringLiteral("Exif.Image.Artist"), tr("Authors"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Origin"),
+                                  QStringLiteral("Exif.Photo.DateTimeOriginal"), tr("Date taken"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Origin"),
+                                  QStringLiteral("Exif.Image.Software"), tr("Program name"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Origin"),
+                                  QStringLiteral("Exif.Image.Copyright"), tr("Copyright"));
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Image"),
+                                  QStringLiteral("Exif.Image.XResolution"), tr("Horizontal resolution"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Image"),
+                                  QStringLiteral("Exif.Image.YResolution"), tr("Vertical resolution"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Image"),
+                                  QStringLiteral("Exif.Image.ResolutionUnit"), tr("Resolution unit"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Image"),
+                                  QStringLiteral("Exif.Photo.ColorSpace"), tr("Colour representation"));
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Image.Make"), tr("Camera maker"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Image.Model"), tr("Camera model"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.FNumber"), tr("F-stop"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.ExposureTime"), tr("Exposure time"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.ISOSpeedRatings"), tr("ISO speed"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.ExposureBiasValue"), tr("Exposure bias"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.FocalLength"), tr("Focal length"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.MaxApertureValue"), tr("Max aperture"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.MeteringMode"), tr("Metering mode"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.Flash"), tr("Flash mode"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("Camera"),
+                                  QStringLiteral("Exif.Photo.FocalLengthIn35mmFilm"), tr("35mm focal length"));
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.LensModel"), tr("Lens model"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.BrightnessValue"), tr("Brightness"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.ExposureProgram"), tr("Exposure program"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.Saturation"), tr("Saturation"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.Sharpness"), tr("Sharpness"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.WhiteBalance"), tr("White balance"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.DigitalZoomRatio"), tr("Digital zoom"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("AdvancedPhoto"),
+                                  QStringLiteral("Exif.Photo.ExifVersion"), tr("EXIF version"));
+
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSLatitudeRef"), tr("Latitude reference"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSLatitude"), tr("Latitude"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSLongitudeRef"), tr("Longitude reference"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSLongitude"), tr("Longitude"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSAltitudeRef"), tr("Altitude reference"));
+        appendExivPropertyIfExist(wrapper, QStringLiteral("GPS"),
+                                  QStringLiteral("Exif.GPSInfo.GPSAltitude"), tr("Altitude"));
+
+    }
+}
+
+QString MetadataModel::imageSize(const QSize &size)
+{
+    QString imageSize;
+
+    if (size.isValid()) {
+        imageSize = tr("%1 x %2").arg(QString::number(size.width()), QString::number(size.height()));
+    } else {
+        imageSize = QLatin1Char('-');
+    }
+
+    return imageSize;
+}
+
+int simplegcd(int a, int b) {
+    return b == 0 ? a : simplegcd(b, a % b);
+}
+
+QString MetadataModel::imageSizeRatio(const QSize &size)
+{
+    if (!size.isValid()) {
+        return QStringLiteral("-");
+    }
+    int gcd = simplegcd(size.width(), size.height());
+    return tr("%1 : %2").arg(QString::number(size.width() / gcd), QString::number(size.height() / gcd));
+}
+
+bool MetadataModel::appendSection(const QString &sectionKey, const QString &sectionDisplayName)
+{
+    if (m_sections.contains(sectionKey)) {
+        return false;
+    }
+
+    m_sections.append(sectionKey);
+    m_sectionProperties[sectionKey] = qMakePair<QString, QList<QString> >(sectionDisplayName, {});
+
+    return true;
+}
+
+bool MetadataModel::appendPropertyIfNotEmpty(const QString &sectionKey, const QString &propertyKey, const QString &propertyDisplayName, const QString &propertyValue)
+{
+    if (propertyValue.isEmpty()) return false;
+
+    return appendProperty(sectionKey, propertyKey, propertyDisplayName, propertyValue);
+}
+
+bool MetadataModel::appendProperty(const QString &sectionKey, const QString &propertyKey, const QString &propertyDisplayName, const QString &propertyValue)
+{
+    if (!m_sections.contains(sectionKey)) {
+        return false;
+    }
+
+    QList<QString> & propertyList = m_sectionProperties[sectionKey].second;
+    if (!propertyList.contains(propertyKey)) {
+        propertyList.append(propertyKey);
+    }
+
+    m_properties[propertyKey] = qMakePair<QString, QString>(propertyDisplayName, propertyValue);
+
+    return true;
+}
+
+bool MetadataModel::updateProperty(const QString &propertyKey, const QString &propertyValue)
+{
+    if (m_properties.contains(propertyKey)) {
+        m_properties[propertyKey].second = propertyValue;
+        return true;
+    }
+
+    return false;
+}
+
+bool MetadataModel::appendExivPropertyIfExist(const Exiv2Wrapper &wrapper, const QString &sectionKey, const QString &exiv2propertyKey, const QString &propertyDisplayName)
+{
+    const QString & value = wrapper.value(exiv2propertyKey);
+    if (!value.isEmpty()) {
+        appendProperty(sectionKey, exiv2propertyKey,
+                       propertyDisplayName.isEmpty() ? wrapper.label(exiv2propertyKey) : propertyDisplayName,
+                       value);
+        return true;
+    }
+    return false;
+}
+
+QModelIndex MetadataModel::index(int row, int column, const QModelIndex &parent) const
+{
+    if (!hasIndex(row, column, parent)) {
+        return QModelIndex();
+    }
+
+    if (!parent.isValid()) {
+        return createIndex(row, column, RowType::SectionRow);
+    } else {
+        // internalid param: row means nth section it belongs to.
+        return createIndex(row, column, RowType::PropertyRow + parent.row());
+    }
+}
+
+QModelIndex MetadataModel::parent(const QModelIndex &child) const
+{
+    if (!child.isValid()) {
+        return QModelIndex();
+    }
+
+    if (child.internalId() == RowType::SectionRow) {
+        return QModelIndex();
+    } else {
+        return createIndex(child.internalId() - RowType::PropertyRow, 0, SectionRow);
+    }
+}
+
+int MetadataModel::rowCount(const QModelIndex &parent) const
+{
+    if (!parent.isValid()) {
+        return m_sections.count();
+    }
+
+    if (parent.internalId() == RowType::SectionRow) {
+        const QString & sectionKey = m_sections[parent.row()];
+        return m_sectionProperties[sectionKey].second.count();
+    }
+
+    return 0;
+}
+
+int MetadataModel::columnCount(const QModelIndex &) const
+{
+    // Always key(display name) and value.
+    return 2;
+}
+
+QVariant MetadataModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid()) {
+        return QVariant();
+    }
+
+    if (role != Qt::DisplayRole) {
+        return QVariant();
+    }
+
+    if (index.internalId() == RowType::SectionRow) {
+        return (index.column() == 0) ? m_sectionProperties[m_sections[index.row()]].first
+                                     : QVariant();
+    } else {
+        int sectionIndex = index.internalId() - RowType::PropertyRow;
+        const QString & sectionKey = m_sections[sectionIndex];
+        const QList<QString> & propertyList = m_sectionProperties[sectionKey].second;
+        return (index.column() == 0) ? m_properties[propertyList[index.row()]].first
+                                     : m_properties[propertyList[index.row()]].second;
+    }
+}
+
+QVariant MetadataModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if (orientation == Qt::Vertical || role != Qt::DisplayRole) {
+        return QVariant();
+    }
+
+    return section == 0 ? tr("Property") : tr("Value");
+}

app/metadatamodel.h

@@ -0,0 +1,48 @@
+#ifndef METADATAMODEL_H
+#define METADATAMODEL_H
+
+#include <QAbstractItemModel>
+
+class Exiv2Wrapper;
+class MetadataModel : public QAbstractItemModel
+{
+    Q_OBJECT
+
+public:
+    explicit MetadataModel(QObject *parent = nullptr);
+    ~MetadataModel();
+
+    void setFile(const QString & imageFilePath);
+    static QString imageSize(const QSize &size);
+    static QString imageSizeRatio(const QSize &size);
+    bool appendSection(const QString & sectionKey, const QString & sectionDisplayName);
+    bool appendPropertyIfNotEmpty(const QString & sectionKey, const QString & propertyKey,
+                                  const QString & propertyDisplayName, const QString & propertyValue = QString());
+    bool appendProperty(const QString & sectionKey, const QString & propertyKey,
+                        const QString & propertyDisplayName, const QString & propertyValue = QString());
+    bool updateProperty(const QString & propertyKey, const QString & propertyValue);
+    bool appendExivPropertyIfExist(const Exiv2Wrapper & wrapper, const QString & sectionKey,
+                                   const QString & exiv2propertyKey, const QString & propertyDisplayName = QString());
+
+private:
+    enum RowType : quintptr {
+        SectionRow,
+        PropertyRow,
+    };
+
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
+    QModelIndex parent(const QModelIndex &child) const override;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex & = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
+
+    // [SECTION_KEY]
+    QList<QString> m_sections;
+    // {SECTION_KEY: (SECTION_DISPLAY_NAME, [PROPERTY_KEY])}
+    QMap<QString, QPair<QString, QList<QString> > > m_sectionProperties;
+    // {PROPERTY_KEY: (PROPERTY_DISPLAY_NAME, PROPERTY_VALUE)}
+    QMap<QString, QPair<QString, QString> > m_properties;
+};
+
+#endif // METADATAMODEL_H

app/navigatorview.cpp

@@ -44,7 +44,7 @@ void NavigatorView::mousePressEvent(QMouseEvent *event)
         update();
     }
 
-    return QGraphicsView::mousePressEvent(event);
+    event->accept();
 }
 
 void NavigatorView::mouseMoveEvent(QMouseEvent *event)
@@ -52,16 +52,17 @@ void NavigatorView::mouseMoveEvent(QMouseEvent *event)
     if (m_mouseDown && m_mainView) {
         m_mainView->centerOn(mapToScene(event->pos()));
         update();
+        event->accept();
+    } else {
+        event->ignore();
     }
-
-    return QGraphicsView::mouseMoveEvent(event);
 }
 
 void NavigatorView::mouseReleaseEvent(QMouseEvent *event)
 {
     m_mouseDown = false;
 
-    return QGraphicsView::mouseReleaseEvent(event);
+    event->accept();
 }
 
 void NavigatorView::wheelEvent(QWheelEvent *event)

app/playlistmanager.cpp

@@ -0,0 +1,164 @@
+#include "playlistmanager.h"
+
+#include <QCollator>
+#include <QDir>
+#include <QFileInfo>
+#include <QUrl>
+
+PlaylistManager::PlaylistManager(PlaylistType type, QObject *parent)
+    : QObject(parent)
+    , m_type(type)
+{
+
+}
+
+PlaylistManager::~PlaylistManager()
+{
+
+}
+
+void PlaylistManager::setPlaylistType(PlaylistManager::PlaylistType type)
+{
+    m_type = type;
+}
+
+PlaylistManager::PlaylistType PlaylistManager::playlistType() const
+{
+    return m_type;
+}
+
+QStringList PlaylistManager::autoLoadFilterSuffix() const
+{
+    return m_autoLoadSuffix;
+}
+
+void PlaylistManager::setAutoLoadFilterSuffix(const QStringList & nameFilters)
+{
+    m_autoLoadSuffix = nameFilters;
+}
+
+void PlaylistManager::clear()
+{
+    m_currentIndex = -1;
+    m_playlist.clear();
+}
+
+void PlaylistManager::setPlaylist(const QList<QUrl> &urls)
+{
+    m_playlist = urls;
+}
+
+void PlaylistManager::setCurrentFile(const QString & filePath)
+{
+    QFileInfo info(filePath);
+    QDir dir(info.path());
+    QString && currentFileName = info.fileName();
+
+    switch (playlistType()) {
+    case PL_SAMEFOLDER: {
+        if (dir.path() == m_currentDir) {
+            int index = indexOf(filePath);
+            m_currentIndex = index == -1 ? appendFile(filePath) : index;
+        } else {
+            QStringList entryList = dir.entryList(
+                        m_autoLoadSuffix,
+                        QDir::Files | QDir::NoSymLinks, QDir::NoSort);
+
+            QCollator collator;
+            collator.setNumericMode(true);
+
+            std::sort(entryList.begin(), entryList.end(), collator);
+
+            clear();
+
+            int index = -1;
+            for (int i = 0; i < entryList.count(); i++) {
+                const QString & fileName = entryList.at(i);
+                const QString & oneEntry = dir.absoluteFilePath(fileName);
+                const QUrl & url = QUrl::fromLocalFile(oneEntry);
+                m_playlist.append(url);
+                if (fileName == currentFileName) {
+                    index = i;
+                }
+            }
+            m_currentIndex = index == -1 ? appendFile(filePath) : index;
+            m_currentDir = dir.path();
+        }
+        break;
+    }
+    case PL_USERPLAYLIST:{
+        int index = indexOf(filePath);
+        m_currentIndex = index == -1 ? appendFile(filePath) : index;
+        break;
+    }
+    default:
+        break;
+    }
+
+    emit loaded(m_playlist.count());
+}
+
+void PlaylistManager::setCurrentIndex(int index)
+{
+    if (index < 0 || index >= m_playlist.count()) return;
+    m_currentIndex = index;
+}
+
+int PlaylistManager::appendFile(const QString &filePath)
+{
+    int index = m_playlist.length();
+    m_playlist.append(QUrl::fromLocalFile(filePath));
+
+    return index;
+}
+
+int PlaylistManager::indexOf(const QString &filePath)
+{
+    const QUrl & url = QUrl::fromLocalFile(filePath);
+    return m_playlist.indexOf(url);
+}
+
+std::tuple<int, QString> PlaylistManager::previousFile() const
+{
+    int count = m_playlist.count();
+    if (count == 0) return std::make_tuple(-1, QString());
+
+    int index = m_currentIndex - 1 < 0 ? count - 1 : m_currentIndex - 1;
+    return std::make_tuple(index, m_playlist.at(index).toLocalFile());
+}
+
+std::tuple<int, QString> PlaylistManager::nextFile() const
+{
+    int count = m_playlist.count();
+    if (count == 0) return std::make_tuple(-1, QString());
+
+    int index = m_currentIndex + 1 == count ? 0 : m_currentIndex + 1;
+    return std::make_tuple(index, m_playlist.at(index).toLocalFile());
+}
+
+std::tuple<int, QString> PlaylistManager::currentFile() const
+{
+    if (m_playlist.count() == 0) return std::make_tuple(-1, QString());
+
+    return std::make_tuple(m_currentIndex, m_playlist.at(m_currentIndex).toLocalFile());
+}
+
+std::tuple<int, QUrl> PlaylistManager::currentFileUrl() const
+{
+    if (m_playlist.count() == 0) return std::make_tuple(-1, QUrl());
+
+    return std::make_tuple(m_currentIndex, m_playlist.at(m_currentIndex));
+}
+
+QList<QUrl> PlaylistManager::convertToUrlList(const QStringList &files)
+{
+    QList<QUrl> urlList;
+    for (const QString & str : qAsConst(files)) {
+        QUrl url = QUrl::fromLocalFile(str);
+        if (url.isValid()) {
+            urlList.append(url);
+        }
+    }
+
+    return urlList;
+}

app/playlistmanager.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include <QObject>
+
+class PlaylistManager : public QObject
+{
+    Q_OBJECT
+public:
+    enum PlaylistType {
+        PL_USERPLAYLIST, // Regular playlist, managed by user.
+        PL_SAMEFOLDER // PlaylistManager managed playlist, loaded from files from same folder.
+    };
+
+    explicit PlaylistManager(PlaylistType type = PL_USERPLAYLIST, QObject *parent = nullptr);
+    ~PlaylistManager();
+
+    void setPlaylistType(PlaylistType type);
+    PlaylistType playlistType() const;
+
+    QStringList autoLoadFilterSuffix() const;
+    void setAutoLoadFilterSuffix(const QStringList &nameFilters);
+
+    void clear();
+
+    void setPlaylist(const QList<QUrl> & urls);
+    void setCurrentFile(const QString & filePath);
+    void setCurrentIndex(int index);
+    int appendFile(const QString & filePath);
+    int indexOf(const QString & filePath);
+
+    std::tuple<int, QString> previousFile() const;
+    std::tuple<int, QString> nextFile() const;
+    std::tuple<int, QString> currentFile() const;
+    std::tuple<int, QUrl> currentFileUrl() const;
+
+    static QList<QUrl> convertToUrlList(const QStringList & files);
+
+signals:
+    void loaded(int length);
+
+private:
+    QList<QUrl> m_playlist;
+    PlaylistType m_type;
+    QString m_currentDir;
+    int m_currentIndex = -1;
+    QStringList m_autoLoadSuffix = {};
+};
+

app/settings.cpp

@@ -0,0 +1,119 @@
+#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);
+}
+
+MouseWheelBehavior Settings::mouseWheelBehavior()
+{
+    QString result = m_qsettings->value("mouse_wheel_behavior", "close").toString().toLower();
+
+    return stringToMouseWheelBehavior(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();
+}
+
+void Settings::setMouseWheelBehavior(MouseWheelBehavior mwb)
+{
+    m_qsettings->setValue("mouse_wheel_behavior", mouseWheelBehaviorToString(mwb));
+    m_qsettings->sync();
+}
+
+QString Settings::doubleClickBehaviorToString(DoubleClickBehavior dcb)
+{
+    static QMap<DoubleClickBehavior, QString> _map {
+        {ActionCloseWindow, "close"},
+        {ActionMaximizeWindow, "maximize"},
+        {ActionDoNothing, "ignore"}
+    };
+
+    return _map.value(dcb, "close");
+}
+
+QString Settings::mouseWheelBehaviorToString(MouseWheelBehavior mwb)
+{
+    static QMap<MouseWheelBehavior, QString> _map {
+        {ActionZoomImage, "zoom"},
+        {ActionPrevNextImage, "switch"}
+    };
+
+    return _map.value(mwb, "zoom");
+}
+
+DoubleClickBehavior Settings::stringToDoubleClickBehavior(QString str)
+{
+    static QMap<QString, DoubleClickBehavior> _map {
+        {"close", ActionCloseWindow},
+        {"maximize", ActionMaximizeWindow},
+        {"ignore", ActionDoNothing}
+    };
+
+    return _map.value(str, ActionCloseWindow);
+}
+
+MouseWheelBehavior Settings::stringToMouseWheelBehavior(QString str)
+{
+    static QMap<QString, MouseWheelBehavior> _map {
+        {"zoom", ActionZoomImage},
+        {"switch", ActionPrevNextImage}
+    };
+
+    return _map.value(str, ActionZoomImage);
+}
+
+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);
+}
+

app/settings.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <QObject>
+#include <QSettings>
+
+enum DoubleClickBehavior {
+    ActionDoNothing,
+    ActionCloseWindow,
+    ActionMaximizeWindow,
+
+    DCActionStart = ActionDoNothing,
+    DCActionEnd = ActionMaximizeWindow
+};
+
+enum MouseWheelBehavior {
+    ActionZoomImage,
+    ActionPrevNextImage,
+
+    MWActionStart = ActionZoomImage,
+    MWActionEnd = ActionPrevNextImage
+};
+
+class Settings : public QObject
+{
+    Q_OBJECT
+public:
+    static Settings *instance();
+
+    bool stayOnTop();
+    DoubleClickBehavior doubleClickBehavior();
+    MouseWheelBehavior mouseWheelBehavior();
+
+    void setStayOnTop(bool on);
+    void setDoubleClickBehavior(DoubleClickBehavior dcb);
+    void setMouseWheelBehavior(MouseWheelBehavior mwb);
+
+    static QString doubleClickBehaviorToString(DoubleClickBehavior dcb);
+    static QString mouseWheelBehaviorToString(MouseWheelBehavior mwb);
+    static DoubleClickBehavior stringToDoubleClickBehavior(QString str);
+    static MouseWheelBehavior stringToMouseWheelBehavior(QString str);
+
+private:
+    Settings();
+
+    static Settings *m_settings_instance;
+
+    QSettings *m_qsettings;
+
+signals:
+
+public slots:
+};
+

app/settingsdialog.cpp

@@ -0,0 +1,72 @@
+#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)
+    , m_mouseWheelBehavior(new QComboBox)
+{
+    this->setWindowTitle(tr("Settings"));
+
+    QFormLayout * settingsForm = new QFormLayout(this);
+
+    static QMap<DoubleClickBehavior, QString> _dc_map {
+        { ActionDoNothing, tr("Do nothing") },
+        { ActionCloseWindow, tr("Close the window") },
+        { ActionMaximizeWindow, tr("Toggle maximize") }
+    };
+
+    static QMap<MouseWheelBehavior, QString> _mw_map {
+        { ActionZoomImage, tr("Zoom in and out") },
+        { ActionPrevNextImage, tr("View next or previous item") }
+    };
+
+    QStringList dcbDropDown;
+    for (int dcb = DCActionStart; dcb <= DCActionEnd; dcb++) {
+        dcbDropDown.append(_dc_map.value(static_cast<DoubleClickBehavior>(dcb)));
+    }
+
+    QStringList mwbDropDown;
+    for (int mwb = MWActionStart; mwb <= MWActionEnd; mwb++) {
+        mwbDropDown.append(_mw_map.value(static_cast<MouseWheelBehavior>(mwb)));
+    }
+
+    settingsForm->addRow(tr("Stay on top when start-up"), m_stayOnTop);
+    settingsForm->addRow(tr("Double-click behavior"), m_doubleClickBehavior);
+    settingsForm->addRow(tr("Mouse wheel behavior"), m_mouseWheelBehavior);
+
+    m_stayOnTop->setChecked(Settings::instance()->stayOnTop());
+    m_doubleClickBehavior->setModel(new QStringListModel(dcbDropDown));
+    DoubleClickBehavior dcb = Settings::instance()->doubleClickBehavior();
+    m_doubleClickBehavior->setCurrentIndex(static_cast<int>(dcb));
+    m_mouseWheelBehavior->setModel(new QStringListModel(mwbDropDown));
+    MouseWheelBehavior mwb = Settings::instance()->mouseWheelBehavior();
+    m_mouseWheelBehavior->setCurrentIndex(static_cast<int>(mwb));
+
+    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));
+    });
+
+    connect(m_mouseWheelBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
+        Settings::instance()->setMouseWheelBehavior(static_cast<MouseWheelBehavior>(index));
+    });
+
+    this->setMinimumSize(300, 61); // not sure why it complain "Unable to set geometry"
+    setWindowFlag(Qt::WindowContextHelpButtonHint, false);
+}
+
+SettingsDialog::~SettingsDialog()
+{
+
+}

app/settingsdialog.h

@@ -0,0 +1,26 @@
+#ifndef SETTINGSDIALOG_H
+#define SETTINGSDIALOG_H
+
+#include <QObject>
+#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;
+    QComboBox * m_mouseWheelBehavior = nullptr;
+};
+
+#endif // SETTINGSDIALOG_H

app/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)

app/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);

app/translations/PineapplePictures.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_de.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="de">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>Über</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Starten Sie die Anwendung mit dem Bilddateipfad als Argument zum Laden der Datei.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>Das Ziehen und Ablegen von Bilddateien in das Fenster wird ebenfalls unterstützt.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Erklärung der Kontextmenüoptionen:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Sicher stellen, dass das Fenster über allen anderen Fenstern bleibt.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Es vermeiden, das Fenster versehentlich zu schließen. (z.B. durch Doppelklick auf das Fenster)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Version: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Copyright © 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo entworfen von %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Gemacht mit Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Quellcode</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Mitwirkenden</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Liste der Mitwirkenden auf GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Vielen Dank an alle, die zu diesem Projekt beigetragen haben.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Übersetzer</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Ich möchte den folgenden Personen danken, die sich freiwillig zur Übersetzung dieser Anwendung gemeldet haben.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 basiert auf den folgenden freien Softwarebibliotheken:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Besonderer Dank</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>&amp;Bibliotheken von Drittanbietern</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>Ihre Rechte</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 wird unter der MIT-Lizenz veröffentlicht.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>Diese Lizenz gewährt Menschen eine Reihe von Freiheiten:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>Sie dürfen %1 für jeden Zweck verwenden</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>Sie dürfen %1 verteilen</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>Sie können untersuchen, wie %1 funktioniert, und es ändern</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>Sie können geänderte Versionen von %1 verteilen</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>Die MIT-Lizenz garantiert Ihnen diese Freiheit. Niemand darf es jemals wegnehmen.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>Von %1 verwendete Bibliotheken von Drittanbietern</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;Hilfe</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;Über</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;Lizenz</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>Ziehen Sie das Bild hierher</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>Die Datei-URL-Liste ist leer</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>Datei ist kein gültiges Bild</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>Bilddaten sind ungültig oder werden derzeit nicht unterstützt</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>Bilddaten sind ungültig</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>Nicht unterstützte Mimedaten: %1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>Die Datei-URL-Liste ist leer</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;Kopieren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>P&amp;ixmap kopieren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>&amp;Dateipfad kopieren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>Eigenschaften</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>Oben bleiben</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>Geschützter Modus</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>Konfigurieren&#xa0;…</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>Hilfe</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>Bildmetadaten</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>Ursprung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>Bild</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>Datei</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>Fotoapparat</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>%1-Datei</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>Beschreibung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>Erweitertes Foto</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>Maße</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>Seitenverhältnis</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>Name</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>Objekttyp</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>Ordnerpfad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>Größe</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>Datum erstellt</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>Datum geändert</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>Bewertung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>Kommentare</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>Autoren</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>Datum genommen</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>Programmname</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>Horizontale Auflösung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>Vertikale Auflösung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>Auflösungseinheit</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>Farbdarstellung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>Kamerahersteller</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>Kameramodell</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>Blendenzahl</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>Belichtungszeit</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>ISO-Geschwindigkeit</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>Belichtungskorrektur</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>Brennweite</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation>Maximale Blende</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation>Messmodus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>Flash-Modus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation>35&#xa0;mm Brennweite</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>Objektivmodell</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>Helligkeit</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>Belichtungsprogramm</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>Sättigung</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>Schärfe</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>Weißabgleich</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>Digitaler Zoom</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>EXIF-Version</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>Breitengrad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>Längengrad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>Höhe</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 × %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>Eigenschaft</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>Wert</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>Einstellungen</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>Nichts tun</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>Fenster schließen</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>Maximieren umschalten</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation>Beim Start oben bleiben</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation>Doppelklickverhalten</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>Pineapple Pictures</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>Dateiliste.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_es.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="es">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>Acerca de</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Lanza la aplicación con la ruta del archivo de imagen como argumento para cargar el archivo.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>También se admite la función de arrastrar y soltar el archivo de imagen en la ventana.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Explicación de la opción del menú contextual:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Haz que la ventana se quede encima de todas las demás ventanas.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Evita cerrar la ventana accidentalmente. (por ejemplo, haciendo doble clic en la ventana)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Versión: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Derechos reservados (c) 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo diseñado por %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Construido con Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Código fuente</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Colaboradores</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Lista de colaboradores en GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Gracias a todas las personas que contibuyen a este proyecto.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Traductores</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Me gustaría dar las gracias a las siguientes personas que se ofrecieron a traducir esta solicitud.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 está construido sobre las siguientes bibliotecas de software libre:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Agradecimiento especial</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_fr.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="fr">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>À propos</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Lancer l&apos;application avec le chemin du fichier image comme argument pour charger le fichier.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>Le glisser-déposer du fichier image sur la fenêtre est également pris en charge.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Explication des options du menu contextuel&#xa0;:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Faire en sorte que la fenêtre reste au-dessus de toutes les autres fenêtres.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Éviter de fermer la fenêtre accidentellement. (par exemple en cliquant deux fois sur la fenêtre)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Version&#xa0;: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Copyright © 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo conçu par %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Fait avec Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Code source</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Contributeurs</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Liste des contributeurs sur GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Merci à toutes les personnes qui ont contribué à ce projet.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Traducteurs</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Je tiens à remercier les personnes suivantes qui se sont portées volontaires pour traduire cette application.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 est basé sur les bibliothèques de logiciels libres suivantes&#xa0;:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Remerciement spécial</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>&amp;Bibliothèques tierces</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>Vos droits</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 est publié sous licence MIT.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>Cette licence accorde aux personnes un certain nombre de libertés&#xa0;:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>Vous êtes libre d&apos;utiliser %1, dans n&apos;importe quel but</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>Vous êtes libre de distribuer %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>Vous pouvez étudier le fonctionnement de %1 et le modifier</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>Vous pouvez distribuer des versions modifiées de %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>La licence MIT vous garantit cette liberté. Personne n&apos;est autorisé à l&apos;enlever.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>Bibliothèques tierces utilisées par %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;Aide</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;À propos</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;Licence</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>Faites glisser l&apos;image ici</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>La liste des URL du fichier est vide</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>Le fichier n&apos;est pas une image valide</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>Les données d&apos;image ne sont pas valides ou ne sont actuellement pas prises en charge</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>Les données d&apos;image ne sont pas valides</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>Mimedata non pris en charge&#xa0;: %1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>La liste des URL de fichiers est vide</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;Copier</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>Copier P&amp;ixmap</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>Copier le &amp;chemin du fichier</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>Propriétés</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>Rester en-haut</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>Mode protégé</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>Configurer…</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>Aide</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>Métadonnées d&apos;image</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>Origine</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>Image</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>Fichier</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>Appareil photo</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>Fichier %1</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>Description</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>Photo avancée</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>Dimensions</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>Rapport d&apos;aspect</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>Nom</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>Type d&apos;élément</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>Chemin du dossier</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>Taille</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>Date créée</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>Date modifiée</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>Évaluation</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>Commentaires</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>Auteurs</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>Date prise</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>Nom du programme</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>Résolution horizontale</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>Résolution verticale</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>Unité de résolution</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>Représentation des couleurs</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>Fabricant de l&apos;appareil photo</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>Modèle d&apos;appareil photo</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>Nombre d&apos;ouverture</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>Temps d&apos;exposition</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>Vitesse ISO</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>Biais d&apos;exposition</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>Distance focale</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation>Ouverture maximale</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation>Mode de mesure</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>Mode flash</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation>Distance focale de 35&#xa0;mm</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>Modèle d&apos;objectif</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>Luminosité</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>Programme d&apos;exposition</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>Saturation</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>Netteté</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>Balance des blancs</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>Zoom numérique</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>Version EXIF</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation>Référence de latitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>Latitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation>Référence de longitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>Longitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation>Référence d&apos;altitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>Altitude</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 × %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>Propriété</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>Valeur</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>Paramètres</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>Ne rien faire</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>Fermer la fenêtre</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>Activer/désactiver l&apos;agrandissement</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation>Rester en-haut lors du démarrage</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation>Comportement du double-clic</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>Pineapple Pictures</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>Liste des fichiers.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_nb_NO.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="nb_NO">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>Om</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Kjør programmer ved å angi en filsti som argument for å laste inn filen.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>Å dra og slippe filen i vinduet støttes også.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation>Ingen av operasjonene i dette programmet vil endre bildet som det er lagret.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Forklaring av alternativer i bindeleddsmeny:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Få vinduet til å alltid ligge over andre vinduer.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Unngå lukking av vinduet ved feiltagelser (f.eks. ved dobbeltklikking av vinduet)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Versjon: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Opphavsrett © 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo designet av %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Bygd med Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Kildekode</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Bidragsytere</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Liste over bidragsytere på GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Takk til alle som har bidratt til prosjektet.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Oversettere</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Takk til følgende dugnadsoversettere.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation type="unfinished">%1 er bygd med følgende friprog-bibliotek:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Spesiell takk til</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>&amp;Tredjepartslisenser</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>Dine rettigheter</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 er MIT-lisensiert.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>Lisensen gir den en rekke friheter:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>Du kan bruke %1 som du vil</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>Du kan dele %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>Du kan se kildekoden til %1 og endre den</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>Du kan distribuere endrede versjoner av %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>MIT-lisensen garanterer deg disse frihetene.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>Tredjepartsbibliotek brukt av %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;Hjelp</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;Om</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;Lisens</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>Dra bilde hit</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>Listen over filnettadresser er tom</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>Filen er ikke et gyldig bilde</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>Ugyldig bildedata, eller for tiden ustøttet</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>Ugyldig bildedata</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>Ustøttet MIME-data: %1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>Listen over filnettadresser er ugyldig</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;Kopier</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation type="unfinished">Kopier p&amp;ixmap</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>Kopier %filsti</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>Egenskaper</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>Behold øverst</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>Beskyttet modus</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation>Førstørr</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation>Forminsk</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation>Vent &amp;vanrett</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation>&amp;Lim inn</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished">Skru av/på rutemønster</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>Sett opp …</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>Hjelp</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation>Avslutt</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>Bilde-metadata</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>Opprinnelse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>Bilde</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>Fil</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>Kamera</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>%1-fil</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>Beskrivelse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>Avansert bilde</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>Dimensjoner</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>Størrelsesforhold</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished">Rammeantall</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>Navn</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>Elementstype</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>Mappesti</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>Størrelse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>Dato opprettet</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>Dato endret</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>Vurdering</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>Kommentarer</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation type="unfinished">Opphavsmenn</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>Dato tatt</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>Programnavn</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation>Opphavsrett</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>Vannrett oppløsning</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>Loddrett oppløsning</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>Oppløsningsenhet</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>Fargerepresentasjon</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>Kamerafabrikat</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>Kameramodell</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>Blenderåpning</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>Eksponeringstid</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>ISO-hastighet</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation type="unfinished">Eksponeringskorrigering</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>Brennvidde</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation type="unfinished">Maks. blenderåpning</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation type="unfinished">Målingsmodus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>Blitz-modus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation type="unfinished">35 mm-brennvidde</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>Linsemodell</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>Lysstyrke</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation type="unfinished">Eksponeringsprogram</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>Metning</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>Skarphet</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>Hvitbalanse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>Digital forstørrelse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>EXIF-versjon</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation>Breddegradsreferanse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>Breddegrad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation>Lengdegradsreferanse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>Lengdegrad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation>Høydereferanse</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>Høyde</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 x %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>Egenskap</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>Verdi</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>Innstillinger</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>Ikke gjør noe</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>Lukk vinduet</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>Veksle maksimering</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation>Zoom inn og ut</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation>Vis neste eller forrige element</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation>Behold i forgrunnen ved oppstart</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation>Dobbeltklikksoppførsel</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation>Musehjulsoppførsel</translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation type="unfinished">Ananasbilder</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>Filliste.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_nl.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="nl">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>Over</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Start het programma met het opgegeven afbeeldingsbestandspad.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>U kunt tevens afbeeldingen naar het venster slepen.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation>Geen van de handelingen in dit programma veranderen de afbeeldingen op de schijf.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Rechtermuisknopmenu-uitleg:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Houdt het venster boven andere vensters.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Voorkomt per ongeluk sluiten (bijv. door te dubbelklikken op het venster).</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Versie: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Copyright (c) 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo gemaakt door %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Gebouwd met Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Broncode</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Bijdragers</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Lijst met bijdragers op GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Met dank aan alle personen die hebben bijgedragen aan dit project.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Vertalers</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Ik wil graag de volgende mensen bedanken die vrijwillig hebben bijgedragen aan vertalingen.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 is gebouwd met de volgende vrijesoftwarebibliotheken:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Met dank aan</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>Ex&amp;terne bibliotheken</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>Uw rechten</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 is uitgebracht onder de MIT-licentie.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>Deze licentie biedt een hoop vrijheden:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>U mag %1 gratis gebruiken, voor welk doeleinde dan ook</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>U mag %1 vrij verspreiden</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>U kunt bekijken hoe %1 werkt en aanpassingen doen</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>U mag aangepaste versie van %1 vrij verspreiden</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>De MIT-licentie garandeert u deze vrijheid, en niemand mag deze vrijheid wegnemen.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>Door %1 gebruikte externe bibliotheken</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;Hulp</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;Over</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;Licentie</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>Sleep een afbeelding hierheen</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>De bestandspadlijst is leeg</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>Het bestand is geen afbeelding</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>De afbeeldingsgegevens zijn beschadigd of worden niet ondersteund</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>Beschadigde afbeeldingsgegevens</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>Niet-ondersteunde mime-gegevens: %1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>De bestandspadlijst is leeg</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;Kopiëren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>P&amp;ixmap kopiëren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>&amp;Bestandspad kopiëren</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>Eigenschappen</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>Altijd bovenop</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>Beschermde modus</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation>Inzoomen</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation>Uitzoomen</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation>&amp;Horizontaal spiegelen</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation>&amp;Plakken</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation>Schaakbordpatroon aan/uit</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>Instellen...</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>Hulp</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation>Afsluiten</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>Afbeeldingsmetagegevens</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>Oorsprong</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>Afbeelding</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>Bestand</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>Camera</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>%1-bestand</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>Omschrijving</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>Uitgebreide foto</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>Afmetingen</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>Beeldverhouding</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation>Aantal frames</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>Naam</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>Soort item</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>Bestandspad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>Grootte</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>Gemaakt op</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>Bewerkt op</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>Waardering</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>Opmerkingen</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>Makers</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>Genomen op</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>Programmanaam</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation>Copyright</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>Horizontale resolutie</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>Verticale resolutie</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>Resolutie-eenheid</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>Kleurweergave</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>Camerafabrikant</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>Cameramodel</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>Openingsverhouding</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>Belichtingstijd</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>ISO-snelheid</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>Belichtingsvertekening</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>Focale lengte</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation>Max. opening</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation>Metermodus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>Flitsmodus</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation>35mm focale lengte</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>Lensmodel</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>Helderheid</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>Belichtingsprogramma</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>Verzadiging</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>Scherpte</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>Witbalans</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>Digitale zoom</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>EXIF-versie</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation>Breedtegraadverwijzing</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>Breedtegraad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation>Lengtegraadverwijzing</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>Lengtegraad</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation>Hoogteverwijzing</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>Hoogte</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 x %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>Eigenschap</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>Waarde</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>Instellingen</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>Niets doen</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>Venster sluiten</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>Maximaliseren/Demaximaliseren</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation>In-/Uitzoomen</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation>Ga naar volgende of vorige item</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation>Automatisch altijd bovenop</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation>Dubbelklikgedrag</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation>Scrollwielgedrag</translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>Pineapple Afbeeldingen</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>Bestandslijst.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_ru.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>О программе</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation>Запустите приложение, указав путь к файлу изображения в качестве аргумента для загрузки файла.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation>Перетаскивание файла изображения в окно также поддерживается.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation>Ни одна из операций в этом приложении не изменит изображения на диске.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>Объяснение пунктов контекстного меню:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation>Сделать окно поверх всех остальных окон.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation>Избежать случайного закрытия окна (например, двойным щелчком по окну).</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>Версия: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>Авторское право (c) 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Логотип разработан %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>Создано с использованием Qt %1 (%2)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>Исходный код</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>Участники</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>Список участников на GitHub</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>Спасибо всем, кто внёс свой вклад в этот проект.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>Переводчики</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>Я хотел бы поблагодарить следующих людей, которые вызвались перевести это приложение.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 собран на следующих бесплатных библиотеках программного обеспечения:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>&amp;Особая благодарность</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>&amp;Сторонние библиотеки</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>Ваши Права</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 выпущен под лицензией MIT.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>Эта лицензия дает людям ряд свобод:</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>Вы можете свободно использовать %1 для любых целей</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>Вы можете свободно распространять %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>Вы можете изучать, как работает %1, и изменять его</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>Вы можете распространять измененные версии %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>Лицензия MIT гарантирует вам эту свободу. Никому и никогда не разрешается забирать её.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>Сторонние библиотеки, используемые %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;Помощь</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;О программе</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;Лицензия</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>Перетащите изображение сюда</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>Список URL-адресов файлов пуст</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>Файл не является действительным изображением</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>Данные изображения недействительны или в настоящее время не поддерживаются</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>Данные изображения недействительны</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>Неподдерживаемые mimedata: %1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>Список URL-адресов файлов пуст</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;Копировать</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>Копировать P&amp;ixmap</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>Копировать &amp;путь к файлу</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>Свойства</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>Поверх всех окон</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>Защищённый режим</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation>Увеличить</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation>Уменьшить</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation>Отразить по &amp;горизонтали</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation>&amp;Вставить</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation>Переключить шахматную доску</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>Настроить...</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>Помощь</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation>Выход</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>Метаданные изображения</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>Происхождение</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>Изображение</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>Файл</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>Камера</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>%1 Файл</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>Описание</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>Расширенное фото</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>Размеры</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>Соотношение сторон</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation>Количество кадров</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>Название</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>Тип элемента</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>Путь к папке</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>Размер</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>Дата создания</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>Дата изменения</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>Рейтинг</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>Комментарии</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>Авторы</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>Дата захвата</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>Название программы</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation>Авторские права</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>Горизонтальное разрешение</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>Вертикальное разрешение</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>Единица разрешения</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>Цветовое представление</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>Производитель камеры</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>Модель камеры</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>F-stop</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>Экспозиция</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>ISO</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>Смещение экспозиции</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>Фокусное расстояние</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation>Максимальная апертура</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation>Режим замера</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>Режим вспышки</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation>Фокусное расстояние 35 мм</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>Модель объектива</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>Яркость</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>Программа экспозиции</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>Насыщенность</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>Чёткость</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>Баланс белого</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>Цифровой зум</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>Версия EXIF</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation>Ссылка на широту</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>Широта</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation>Ссылка на долготу</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>Долгота</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation>Ссылка на высоту</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>Высота</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 x %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>Свойство</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>Значение</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>Настройки</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>Ничего не делать</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>Закрыть окно</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>Развернуть окно</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation>Увеличение или уменьшение изображения</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation>Следующее или предыдущее изображение</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation>Поверх всех окон при запуске</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation>Действие при двойном щелчке</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation>Действие колеса мыши</translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>Pineapple Pictures</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>Список файлов.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_si.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="si">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>පිළිබඳව</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <source>Launch application with image file path as argument to load the file.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="27"/>
+        <source>Drag and drop image file onto the window is also supported.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <source>Make window stay on top of all other windows.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="39"/>
+        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>අනුවාදය: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>ප්‍රකාශන හිමිකම (ඇ) 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>ලාංඡනය %1 විසින් නිර්මාණය කරන ලදි</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>සහදායකයින්</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>ගිට්හබ් හි සහදායකයින්ගේ ලැයිස්තුව</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>මෙම ව්යාපෘතියට දායක වූ සියලු දෙනාටම ස්තූතියි.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>පරිවර්තකයින්</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>මෙම යෙදුම පරිවර්තනය කිරීමට ස්වේච්ඡාවෙන් ඉදිරිපත් වූ පහත සඳහන් පුද්ගලයින්ට මම ස්තූතිවන්ත වෙමි.</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>ඔබගේ අයිතිවාසිකම්</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>ඕනෑම කටයුත්තක් සඳහා %1 භාවිතා කිරීමට ඔබට නිදහස තිබේ</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>%1 බෙදා හැරීමට ඔබට නිදහස තිබේ</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>%1 ක්‍රියා කරන ආකාරය අධ්‍යයනය කර එය වෙනස් කළ හැකිය</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>%1 හි වෙනස් කළ අනුවාදයන් ඔබට බෙදා හැරීමට හැකිය</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>&amp;උපකාර</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>&amp;පිළිබඳව</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>&amp;බලපත්‍රය</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation type="unfinished">ගොනු ඒ.ස.නි. (url) ලැයිස්තුව හිස් ය</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>ගොනුව වලංගු නොවන රූපයකි</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>රූපයේ දත්ත වලංගු නොවේ</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>ගොනු ඒ.ස.නි. (url) ලැයිස්තුව හිස් ය</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>&amp;පිටපත්</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>පින්තූරය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>ගොනුව</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>ගොනු %1</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>විස්තරය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>මාන</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>දර්ශන අනුපාතය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>නම</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>ගොනුවේ මාර්ගය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>ප්‍රමාණය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>සෑදූ දිනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>වෙනස් කළ දිනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>ශ්‍රේණිගත කිරීම</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>අදහස්</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>කතුවරුන්</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>ගත් දිනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>වැඩසටහනේ නම</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>තිරස් විභේදනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>සිරස් විභේදනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>විභේදන ඒකකය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>වර්ණ නිරූපණය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>නිරාවරණ කාලය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>නිරාවරණ නැඹුරුව</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>කාච ආකෘතිය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>දීප්තිය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>නිරාවරණ වැඩසටහන</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>තියුණු බව</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>සංඛ්‍යාංක විශාලනය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>අක්ෂාංශ</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>දේශාංශ</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>උන්නතාංශය</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 x %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>අගය</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>සැකසුම්</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>කිසිවක් නොකරන්න</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>කවුළුව වහන්න</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <source>Stay on top when start-up</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="42"/>
+        <source>Double-click behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>පයින්ඇපල් පික්චර්ස්</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>ගොනු ලැයිස්තුව.</translation>
+    </message>
+</context>
+</TS>

app/translations/PineapplePictures_zh_CN.ts

@@ -0,0 +1,644 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="zh_CN">
+<context>
+    <name>AboutDialog</name>
+    <message>
+        <location filename="../aboutdialog.cpp" line="23"/>
+        <source>About</source>
+        <translation>关于</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="26"/>
+        <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="../aboutdialog.cpp" line="27"/>
+        <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="../aboutdialog.cpp" line="28"/>
+        <source>None of the operations in this application will alter the pictures on disk.</source>
+        <translation>此程序中所有的操作均不会修改图片文件本身。</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="29"/>
+        <source>Context menu option explanation:</source>
+        <translation>菜单项说明：</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="36"/>
+        <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="../aboutdialog.cpp" line="39"/>
+        <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>
+    <message>
+        <location filename="../aboutdialog.cpp" line="47"/>
+        <source>Version: %1</source>
+        <translation>版本: %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="50"/>
+        <source>Copyright (c) 2020 %1</source>
+        <translation>版权所有 (c) 2020 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="52"/>
+        <source>Logo designed by %1</source>
+        <translation>Logo 由 %1 设计</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="54"/>
+        <source>Built with Qt %1 (%2)</source>
+        <translation>使用 Qt %1 (%2) 进行构建</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="55"/>
+        <source>Source code</source>
+        <translation>源代码</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="65"/>
+        <source>Contributors</source>
+        <translation>贡献者</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="67"/>
+        <source>List of contributors on GitHub</source>
+        <translation>GitHub 上的贡献者列表</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="68"/>
+        <source>Thanks to all people who contributed to this project.</source>
+        <translation>感谢所有参与此项目的朋友。</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="72"/>
+        <source>Translators</source>
+        <translation>翻译者</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="73"/>
+        <source>I would like to thank the following people who volunteered to translate this application.</source>
+        <translation>我想要感谢下列自愿参与翻译此应用程序的朋友。</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="117"/>
+        <source>%1 is built on the following free software libraries:</source>
+        <comment>Free as in freedom</comment>
+        <translation>%1 采用了下列自由软件程序库进行构建：</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="141"/>
+        <source>&amp;Special Thanks</source>
+        <translation>致谢(&amp;S)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="143"/>
+        <source>&amp;Third-party Libraries</source>
+        <translation>第三方程序库(&amp;T)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="79"/>
+        <source>Your Rights</source>
+        <translation>用户的权利</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="81"/>
+        <source>%1 is released under the MIT License.</source>
+        <translation>%1 是在 MIT 许可协议下发布的。</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="82"/>
+        <source>This license grants people a number of freedoms:</source>
+        <translation>此许可证赋予人们以下自由的权利：</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="83"/>
+        <source>You are free to use %1, for any purpose</source>
+        <translation>任何人都可以为了任何目的自由地使用 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="84"/>
+        <source>You are free to distribute %1</source>
+        <translation>任何人都可以自由地分发 %1</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="85"/>
+        <source>You can study how %1 works and change it</source>
+        <translation>任何人都可以自由地研究 %1 的工作原理并对其进行修改</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="86"/>
+        <source>You can distribute changed versions of %1</source>
+        <translation>任何人都可以自由地分发修改过的 %1 版本</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="88"/>
+        <source>The MIT license guarantees you this freedom. Nobody is ever permitted to take it away.</source>
+        <translation>此软件通过 MIT 许可证赋予用户上述自由，任何人无权剥夺。</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="116"/>
+        <source>Third-party Libraries used by %1</source>
+        <translation>%1 使用的第三方程序库</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="139"/>
+        <source>&amp;Help</source>
+        <translation>帮助(&amp;H)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="140"/>
+        <source>&amp;About</source>
+        <translation>关于(&amp;A)</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="142"/>
+        <source>&amp;License</source>
+        <translation>软件许可证(&amp;L)</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsScene</name>
+    <message>
+        <location filename="../graphicsscene.cpp" line="16"/>
+        <source>Drag image here</source>
+        <translation>拖放图片至此</translation>
+    </message>
+</context>
+<context>
+    <name>GraphicsView</name>
+    <message>
+        <location filename="../graphicsview.cpp" line="291"/>
+        <source>File url list is empty</source>
+        <translation>文件 URL 列表为空</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="52"/>
+        <source>File is not a valid image</source>
+        <translation>文件不是有效的图片文件</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="57"/>
+        <location filename="../graphicsview.cpp" line="62"/>
+        <source>Image data is invalid or currently unsupported</source>
+        <translation>图像数据无效或暂未支持</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="299"/>
+        <source>Image data is invalid</source>
+        <translation>图片数据无效</translation>
+    </message>
+    <message>
+        <location filename="../graphicsview.cpp" line="306"/>
+        <source>Not supported mimedata: %1</source>
+        <translation>不受支持的 MimeData 格式：%1</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.cpp" line="173"/>
+        <source>File url list is empty</source>
+        <translation>文件 URL 列表为空</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="384"/>
+        <source>&amp;Copy</source>
+        <translation>复制(&amp;C)</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="50"/>
+        <source>Copy P&amp;ixmap</source>
+        <translation>复制位图(&amp;I)</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="51"/>
+        <source>Copy &amp;File Path</source>
+        <translation>复制文件路径(&amp;F)</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="58"/>
+        <source>Properties</source>
+        <translation>属性</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="35"/>
+        <location filename="../actionmanager.cpp" line="54"/>
+        <source>Stay on top</source>
+        <translation>总在最前</translation>
+    </message>
+    <message>
+        <location filename="../aboutdialog.cpp" line="38"/>
+        <location filename="../actionmanager.cpp" line="55"/>
+        <source>Protected mode</source>
+        <translation>保护模式</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="47"/>
+        <source>Zoom in</source>
+        <translation>放大</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="48"/>
+        <source>Zoom out</source>
+        <translation>缩小</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="49"/>
+        <source>Flip &amp;Horizontally</source>
+        <translation>水平翻转(&amp;H)</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="52"/>
+        <source>&amp;Paste</source>
+        <translation>粘贴(&amp;P)</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="53"/>
+        <source>Toggle Checkerboard</source>
+        <translation>切换棋盘格</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="56"/>
+        <source>Configure...</source>
+        <translation>设置...</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="57"/>
+        <source>Help</source>
+        <translation>帮助</translation>
+    </message>
+    <message>
+        <location filename="../actionmanager.cpp" line="59"/>
+        <source>Quit</source>
+        <translation>退出</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataDialog</name>
+    <message>
+        <location filename="../metadatadialog.cpp" line="80"/>
+        <source>Image Metadata</source>
+        <translation>图像元信息</translation>
+    </message>
+</context>
+<context>
+    <name>MetadataModel</name>
+    <message>
+        <location filename="../metadatamodel.cpp" line="36"/>
+        <source>Origin</source>
+        <comment>Section name.</comment>
+        <translation>来源</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="37"/>
+        <source>Image</source>
+        <comment>Section name.</comment>
+        <translation>图像</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="41"/>
+        <source>File</source>
+        <comment>Section name.</comment>
+        <translation>文件</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="38"/>
+        <source>Camera</source>
+        <comment>Section name.</comment>
+        <translation>照相机</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="28"/>
+        <source>%1 File</source>
+        <translation>%1 文件</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="35"/>
+        <source>Description</source>
+        <comment>Section name.</comment>
+        <translation>说明</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="39"/>
+        <source>Advanced photo</source>
+        <comment>Section name.</comment>
+        <translation>高级照片</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="40"/>
+        <source>GPS</source>
+        <comment>Section name.</comment>
+        <translation>GPS</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="44"/>
+        <source>Dimensions</source>
+        <translation>分辨率</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="46"/>
+        <source>Aspect ratio</source>
+        <translation>纵横比</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="49"/>
+        <source>Frame count</source>
+        <translation>总帧数</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="53"/>
+        <source>Name</source>
+        <translation>名称</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="55"/>
+        <source>Item type</source>
+        <translation>项目类型</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="57"/>
+        <source>Folder path</source>
+        <translation>文件夹路径</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="59"/>
+        <source>Size</source>
+        <translation>大小</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="61"/>
+        <source>Date created</source>
+        <translation>创建日期</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="63"/>
+        <source>Date modified</source>
+        <translation>修改日期</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="70"/>
+        <source>Rating</source>
+        <translation>分级</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="72"/>
+        <source>Comments</source>
+        <translation>备注</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="75"/>
+        <source>Authors</source>
+        <translation>作者</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="77"/>
+        <source>Date taken</source>
+        <translation>拍摄日期</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="79"/>
+        <source>Program name</source>
+        <translation>程序名称</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="81"/>
+        <source>Copyright</source>
+        <translation>版权</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="84"/>
+        <source>Horizontal resolution</source>
+        <translation>水平分辨率</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="86"/>
+        <source>Vertical resolution</source>
+        <translation>垂直分辨率</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="88"/>
+        <source>Resolution unit</source>
+        <translation>分辨率单位</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="90"/>
+        <source>Colour representation</source>
+        <translation>颜色表示</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="93"/>
+        <source>Camera maker</source>
+        <translation>照相机制造商</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="95"/>
+        <source>Camera model</source>
+        <translation>照相机型号</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="97"/>
+        <source>F-stop</source>
+        <translation>光圈值</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="99"/>
+        <source>Exposure time</source>
+        <translation>曝光时间</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="101"/>
+        <source>ISO speed</source>
+        <translation>ISO 感光度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="103"/>
+        <source>Exposure bias</source>
+        <translation>曝光补偿</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="105"/>
+        <source>Focal length</source>
+        <translation>焦距</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="107"/>
+        <source>Max aperture</source>
+        <translation>镜头最大光圈</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="109"/>
+        <source>Metering mode</source>
+        <translation>测光模式</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="111"/>
+        <source>Flash mode</source>
+        <translation>闪光灯模式</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="113"/>
+        <source>35mm focal length</source>
+        <translation>换算至 35mm 焦距</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="116"/>
+        <source>Lens model</source>
+        <translation>镜头型号</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="118"/>
+        <source>Brightness</source>
+        <translation>亮度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="120"/>
+        <source>Exposure program</source>
+        <translation>曝光程序</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="122"/>
+        <source>Saturation</source>
+        <translation>饱和度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="124"/>
+        <source>Sharpness</source>
+        <translation>清晰度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="126"/>
+        <source>White balance</source>
+        <translation>白平衡</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="128"/>
+        <source>Digital zoom</source>
+        <translation>数字缩放</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="130"/>
+        <source>EXIF version</source>
+        <translation>EXIF 版本</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="133"/>
+        <source>Latitude reference</source>
+        <translation>纬度基准</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="135"/>
+        <source>Latitude</source>
+        <translation>纬度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="137"/>
+        <source>Longitude reference</source>
+        <translation>经度基准</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="139"/>
+        <source>Longitude</source>
+        <translation>经度</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="141"/>
+        <source>Altitude reference</source>
+        <translation>海拔基准</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="143"/>
+        <source>Altitude</source>
+        <translation>海拔</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="153"/>
+        <source>%1 x %2</source>
+        <translation>%1 x %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="171"/>
+        <source>%1 : %2</source>
+        <translation>%1 : %2</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Property</source>
+        <translation>属性</translation>
+    </message>
+    <message>
+        <location filename="../metadatamodel.cpp" line="306"/>
+        <source>Value</source>
+        <translation>值</translation>
+    </message>
+</context>
+<context>
+    <name>SettingsDialog</name>
+    <message>
+        <location filename="../settingsdialog.cpp" line="16"/>
+        <source>Settings</source>
+        <translation>设定</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="21"/>
+        <source>Do nothing</source>
+        <translation>什么也不做</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="22"/>
+        <source>Close the window</source>
+        <translation>关闭窗口</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="23"/>
+        <source>Toggle maximize</source>
+        <translation>最大化窗口</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="27"/>
+        <source>Zoom in and out</source>
+        <translation>放大和缩小</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="28"/>
+        <source>View next or previous item</source>
+        <translation>查看下一项或上一项</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="41"/>
+        <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="42"/>
+        <source>Double-click behavior</source>
+        <translation>双击时的行为</translation>
+    </message>
+    <message>
+        <location filename="../settingsdialog.cpp" line="43"/>
+        <source>Mouse wheel behavior</source>
+        <translation>鼠标滚轮行为</translation>
+    </message>
+</context>
+<context>
+    <name>main</name>
+    <message>
+        <location filename="../main.cpp" line="31"/>
+        <source>Pineapple Pictures</source>
+        <translation>菠萝看图</translation>
+    </message>
+    <message>
+        <location filename="../main.cpp" line="35"/>
+        <source>File list.</source>
+        <translation>文件列表。</translation>
+    </message>
+</context>
+</TS>

appveyor.yml

@@ -1,27 +1,140 @@
+image:
+  - Visual Studio 2019
 environment:
+  CMAKE_INSTALL_ROOT: C:\projects\cmake
+  LIBZ: C:\projects\zlib
+  LIBEXPAT: C:\projects\libexpat
+  LIBAVIF: C:\projects\libavif
+  LIBEXIV2: C:\projects\exiv2
   matrix:
-    - build_name: mingw73_32_qt5_12_5
-      QTPATH: C:\Qt\5.12.5\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
+    - build_name: mingw81_64_qt5_15_2
+      QTPATH: C:\Qt\5.15.2\mingw81_64
+      MINGW64: C:\Qt\Tools\mingw810_64
 
 install:
+  - mkdir %CMAKE_INSTALL_ROOT%
+  - mkdir %LIBZ%
+  - mkdir %LIBEXPAT%
+  - mkdir %LIBAVIF%
+  - mkdir %LIBEXIV2%
   - cd %APPVEYOR_BUILD_FOLDER%
   - git submodule update --init --recursive
-  - set PATH=%PATH%;%QTPATH%\bin;%MINGW32%\bin
+  - set PATH=%PATH%;%CMAKE_INSTALL_ROOT%;%QTPATH%\bin;%MINGW64%\bin
+  - set CC=%MINGW64%\bin\gcc.exe
+  - set CXX=%MINGW64%\bin\g++.exe
 
 build_script:
+# prepare
+  - mkdir 3rdparty
+  - cinst ninja
+# download and install zlib for KArchive
+  - cd %LIBZ%
+  - curl -fsSL -o zlib1211.zip https://zlib.net/zlib1211.zip
+  - 7z x zlib1211.zip -y
+  - cd zlib-1.2.11
   - mkdir build
   - cd build
-  - cmake -G "Unix Makefiles" -DCMAKE_MAKE_PROGRAM=mingw32-make -DCMAKE_INSTALL_PREFIX='%cd%' ..\
-  - mingw32-make
-  - mingw32-make install
+  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT%
+  - 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 -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_ROOT% -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 v2.0.1 --depth 1 https://aomedia.googlesource.com/aom
+  - cd aom
+  - mkdir build.libavif
+  - cd build.libavif
+  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT% -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
+  - cd %APPVEYOR_BUILD_FOLDER%
+# install libavif for avif format support of KImageFormats
+  - cd %LIBAVIF%
+  - curl -fsSL -o libavif-v0_8_4.zip https://github.com/AOMediaCodec/libavif/archive/v0.8.4.zip
+  - 7z x libavif-v0_8_4.zip -y
+  - cd libavif-0.8.4
+  - mkdir build
+  - cd build
+  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT% -DAVIF_CODEC_AOM=ON
+  - 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 -q https://invent.kde.org/frameworks/karchive.git
+  - git rev-parse HEAD
+  - cd karchive
+  - mkdir build
+  - cd build
+  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT%
+  - 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_2_10.zip https://github.com/libexpat/libexpat/archive/R_2_2_10.zip
+  - 7z x R_2_2_10.zip -y
+  - cd libexpat-R_2_2_10/expat/
+  - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT% -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 v0.27.3.zip https://github.com/Exiv2/exiv2/archive/v0.27.3.zip
+  - 7z x v0.27.3.zip -y
+  - cd exiv2-0.27.3
+  - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT% -DEXIV2_BUILD_SAMPLES=OFF -DEXIV2_ENABLE_WIN_UNICODE=ON
+  - cmake --build . --target install/strip
+  - cd %APPVEYOR_BUILD_FOLDER%
+# install KImageFormats
+  - cd 3rdparty
+  - git clone -q https://invent.kde.org/frameworks/kimageformats.git
+  - git rev-parse HEAD
+  - cd kimageformats
+  - mkdir build
+  - cd build
+  - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DQT_PLUGIN_INSTALL_DIR=%QTPATH%\plugins
+  - cmake --build . --config Release
+  - cmake --build . --config Release --target install/strip
+  - 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%'
+  - 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
-  - windeployqt --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler --release .\ppic.exe
-  - tree
+  - copy %APPVEYOR_BUILD_FOLDER%\LICENSE .
+  - copy %CMAKE_INSTALL_ROOT%\lib\libaom.dll
+  - copy %CMAKE_INSTALL_ROOT%\bin\libexpat.dll
+  - copy %CMAKE_INSTALL_ROOT%\bin\libexiv2.dll
+  - copy %CMAKE_INSTALL_ROOT%\bin\libavif.dll
+  - copy %CMAKE_INSTALL_ROOT%\bin\libzlib.dll
+  - copy C:\projects\cmake\bin\libKF5Archive.dll .
+  - windeployqt --verbose=2 --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler .\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_2_10\expat\COPYING License.expat.txt
+  - copy %LIBAVIF%\libavif-0.8.4\LICENSE License.libavif.txt
+  - copy %LIBEXIV2%\exiv2-0.27.3\COPYING License.exiv2.txt
+# TODO: Qt, zlib
+  - cd ..
+# for debug..
+  - tree /f
 
 artifacts:
   - path: build\bin

assets/icons/go-next.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"
+   width="75"
+   height="75"
+   viewBox="0 0 19.84375 19.843751"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="go-next.svg">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#282929"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.76862745"
+     inkscape:pageshadow="2"
+     inkscape:zoom="16.000001"
+     inkscape:cx="35.333099"
+     inkscape:cy="37.582065"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="false"
+     units="px"
+     inkscape:pagecheckerboard="false"
+     showguides="true"
+     inkscape:guide-bbox="true"
+     inkscape:window-width="1920"
+     inkscape:window-height="1001"
+     inkscape:window-x="-9"
+     inkscape:window-y="-9"
+     inkscape:window-maximized="1">
+    <sodipodi:guide
+       position="11.453565,9.9198082"
+       orientation="0,-1"
+       id="guide857" />
+    <sodipodi:guide
+       position="9.9229088,19.564698"
+       orientation="1,0"
+       id="guide837" />
+  </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 />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="图层 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <ellipse
+       style="opacity:1;fill:#000000;fill-opacity:0.15678;stroke:#ffffff;stroke-width:0.396875;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path849"
+       cx="9.9368067"
+       cy="9.915391"
+       rx="8.6764698"
+       ry="8.9158831" />
+    <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>

assets/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>

assets/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

assets/plain/translators.html

@@ -0,0 +1,10 @@
+<ul>
+<li><u>Chinese (Simplified)</u>: Percy Hong</li>
+<li><u>Dutch</u>: Heimen Stoffels</li>
+<li><u>French</u>: J. Lavoie, K. Herbert</li>
+<li><u>German</u>: K. Herbert, J. Lavoie</li>
+<li><u>Norwegian Bokmål</u>: Allan Nordhøy</li>
+<li><u>Russian</u>: Sergey Shornikov, Artem</li>
+<li><u>Sinhala</u>: HelaBasa</li>
+<li><u>Spanish</u>: William(ѕ)ⁿ</li>
+</ul>

assets/resources.qrc

@@ -8,5 +8,8 @@
         <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>
+        <file>plain/translators.html</file>
     </qresource>
 </RCC>

cmake/FindLibExiv2.cmake

@@ -0,0 +1,96 @@
+#.rst:
+# FindLibExiv2
+# ------------
+#
+# Try to find the Exiv2 library.
+#
+# This will define the following variables:
+#
+# ``LibExiv2_FOUND``
+#     True if (the requested version of) Exiv2 is available
+#
+# ``LibExiv2_VERSION``
+#     The version of Exiv2
+#
+# ``LibExiv2_INCLUDE_DIRS``
+#     The include dirs of Exiv2 for use with target_include_directories()
+#
+# ``LibExiv2_LIBRARIES``
+#     The Exiv2 library for use with target_link_libraries().
+#     This can be passed to target_link_libraries() instead of
+#     the ``LibExiv2::LibExiv2`` target
+#
+# If ``LibExiv2_FOUND`` is TRUE, it will also define the following imported
+# target:
+#
+# ``LibExiv2::LibExiv2``
+#     The Exiv2 library
+#
+# In general we recommend using the imported target, as it is easier to use.
+# Bear in mind, however, that if the target is in the link interface of an
+# exported library, it must be made available by the package config file.
+#
+# Since 5.53.0.
+#
+#=============================================================================
+# SPDX-FileCopyrightText: 2018 Christophe Giboudeaux <christophe@krop.fr>
+# SPDX-FileCopyrightText: 2010 Alexander Neundorf <neundorf@kde.org>
+# SPDX-FileCopyrightText: 2008 Gilles Caulier <caulier.gilles@gmail.com>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#=============================================================================
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_EXIV2 QUIET exiv2)
+
+find_path(LibExiv2_INCLUDE_DIRS NAMES exiv2/exif.hpp
+    HINTS ${PC_EXIV2_INCLUDEDIR}
+)
+
+find_library(LibExiv2_LIBRARIES NAMES exiv2 libexiv2
+    HINTS ${PC_EXIV2_LIBRARY_DIRS}
+)
+
+set(LibExiv2_VERSION ${PC_EXIV2_VERSION})
+
+if(NOT LibExiv2_VERSION AND DEFINED LibExiv2_INCLUDE_DIRS)
+    # With exiv >= 0.27, the version #defines are in exv_conf.h instead of version.hpp
+    foreach(_exiv2_version_file "version.hpp" "exv_conf.h")
+        if(EXISTS "${LibExiv2_INCLUDE_DIRS}/exiv2/${_exiv2_version_file}")
+            file(READ "${LibExiv2_INCLUDE_DIRS}/exiv2/${_exiv2_version_file}" _exiv_version_file_content)
+            string(REGEX MATCH "#define EXIV2_MAJOR_VERSION[ ]+\\([0-9]+\\)" EXIV2_MAJOR_VERSION_MATCH ${_exiv_version_file_content})
+            string(REGEX MATCH "#define EXIV2_MINOR_VERSION[ ]+\\([0-9]+\\)" EXIV2_MINOR_VERSION_MATCH ${_exiv_version_file_content})
+            string(REGEX MATCH "#define EXIV2_PATCH_VERSION[ ]+\\([0-9]+\\)" EXIV2_PATCH_VERSION_MATCH ${_exiv_version_file_content})
+            if(EXIV2_MAJOR_VERSION_MATCH)
+                string(REGEX REPLACE ".*_MAJOR_VERSION[ ]+\\((.*)\\)" "\\1" EXIV2_MAJOR_VERSION ${EXIV2_MAJOR_VERSION_MATCH})
+                string(REGEX REPLACE ".*_MINOR_VERSION[ ]+\\((.*)\\)" "\\1" EXIV2_MINOR_VERSION ${EXIV2_MINOR_VERSION_MATCH})
+                string(REGEX REPLACE ".*_PATCH_VERSION[ ]+\\((.*)\\)" "\\1"  EXIV2_PATCH_VERSION  ${EXIV2_PATCH_VERSION_MATCH})
+            endif()
+        endif()
+    endforeach()
+
+    set(LibExiv2_VERSION "${EXIV2_MAJOR_VERSION}.${EXIV2_MINOR_VERSION}.${EXIV2_PATCH_VERSION}")
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibExiv2
+    FOUND_VAR LibExiv2_FOUND
+    REQUIRED_VARS  LibExiv2_LIBRARIES LibExiv2_INCLUDE_DIRS
+    VERSION_VAR  LibExiv2_VERSION
+)
+
+mark_as_advanced(LibExiv2_INCLUDE_DIRS LibExiv2_LIBRARIES)
+
+if(LibExiv2_FOUND AND NOT TARGET LibExiv2::LibExiv2)
+    add_library(LibExiv2::LibExiv2 UNKNOWN IMPORTED)
+    set_target_properties(LibExiv2::LibExiv2 PROPERTIES
+        IMPORTED_LOCATION "${LibExiv2_LIBRARIES}"
+        INTERFACE_INCLUDE_DIRECTORIES "${LibExiv2_INCLUDE_DIRS}"
+    )
+endif()
+
+include(FeatureSummary)
+set_package_properties(LibExiv2 PROPERTIES
+    URL "https://www.exiv2.org"
+    DESCRIPTION "Image metadata support"
+)

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<component type="desktop-application">
+  <id>net.blumia.pineapple-pictures</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>MIT</project_license>
+  <name>Pineapple Pictures</name>
+  <name xml:lang="zh-CN">菠萝看图</name>
+  <summary>Image Viewer</summary>
+  <summary xml:lang="zh-CN">图像查看器</summary>
+  <description>
+    <p>Pineapple Pictures is a lightweight and easy-to-use image viewer that comes with a handy navigation thumbnail when zoom-in, and doesn't contain any image management support.</p>
+    <p xml:lang="zh-CN">菠萝看图是一个轻量级易用的图像查看器，在图片放大时提供了方便的鸟瞰导航功能，且不包含任何图片管理功能。</p>
+  </description>
+  <url type="homepage">https://github.com/BLumia/pineapple-pictures</url>
+  <url type="bugtracker">https://github.com/BLumia/pineapple-pictures/issues</url>
+  <provides>
+    <binary>ppic</binary>
+  </provides>
+</component>

dist/net.blumia.pineapple-pictures.desktop

@@ -1,12 +1,15 @@
 [Desktop Entry]
 Categories=Graphics;
-Comment=Pineapple Pictures Image Viewer.
+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=Pictures
+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

icons/app-icon.svg

@@ -1,102 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<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"
-   width="32"
-   height="32"
-   viewBox="0 0 8.4666665 8.4666669"
-   version="1.1"
-   id="svg8"
-   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
-   sodipodi:docname="view-fullscreen - 副本.svg">
-  <defs
-     id="defs2" />
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#000000"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.69803922"
-     inkscape:pageshadow="2"
-     inkscape:zoom="22.4"
-     inkscape:cx="11.283707"
-     inkscape:cy="14.931415"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     units="px"
-     inkscape:pagecheckerboard="true"
-     inkscape:window-width="1920"
-     inkscape:window-height="1001"
-     inkscape:window-x="-9"
-     inkscape:window-y="-9"
-     inkscape:window-maximized="1" />
-  <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 />
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-288.5333)">
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26458332px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="M 1.6393869,293.16031 1.615848,290.14918 H 3.6380209"
-       id="path837"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26531255px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 6.9097992,291.96816 0.014252,-1.85441 -3.2860303,0.0354"
-       id="path837-6"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26458332px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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-       id="path837-9"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26531255px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 1.6393869,293.16031 -0.00244,1.90166 3.2856855,0.012"
-       id="path837-6-4"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26458332px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 1.6418341,292.9131 0.8740699,-0.51972 c 0,0 0.4960938,-0.29529 0.8622581,-0.11812 0.3661646,0.17718 0.094494,0.0236 0.3661646,0.17718 0.2716702,0.15355 0.2716702,0.16537 0.2716702,0.16537 l 0.5669645,0.60239 c 0,0 0.9921875,1.16937 1.1339284,1.37017 l 0.1299292,0.21261 0.1417411,0.30711"
-       id="path819"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccccccscc" />
-    <path
-       style="fill:none;stroke:#ffffff;stroke-width:0.26458332px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 5.1144902,293.84623 0.4488469,-0.62603 c 0,0 0.3071055,-0.22442 0.5669642,-0.2008 l 0.2598587,0.0236 0.3425409,0.12993 v 0 l 0.2480469,0.14174"
-       id="path821"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccccccc" />
-    <ellipse
-       style="fill:#ffffff;fill-opacity:0.87058824;stroke:none;stroke-width:0;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-       id="path823"
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-       cy="291.8028"
-       rx="0.86816406"
-       ry="0.8976934" />
-  </g>
-</svg>

languages/PineapplePictures.ts

@@ -1,118 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE TS>
-<TS version="2.1">
-<context>
-    <name>GraphicsScene</name>
-    <message>
-        <location filename="../graphicsscene.cpp" line="16"/>
-        <source>Drag image here</source>
-        <translation type="unfinished"></translation>
-    </message>
-</context>
-<context>
-    <name>GraphicsView</name>
-    <message>
-        <location filename="../graphicsview.cpp" line="239"/>
-        <source>File url list is empty</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="44"/>
-        <source>File is not a valid image</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="247"/>
-        <source>Image data is invalid</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="254"/>
-        <source>Not supported mimedata: %1</source>
-        <translation type="unfinished"></translation>
-    </message>
-</context>
-<context>
-    <name>MainWindow</name>
-    <message>
-        <location filename="../mainwindow.cpp" line="143"/>
-        <source>File url list is empty</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="322"/>
-        <source>&amp;Copy</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="343"/>
-        <source>Copy P&amp;ixmap</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="348"/>
-        <source>Copy &amp;File Path</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="358"/>
-        <source>&amp;Paste Image</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="363"/>
-        <source>&amp;Paste Image File</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="368"/>
-        <location filename="../mainwindow.cpp" line="387"/>
-        <source>Stay on top</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="374"/>
-        <location filename="../mainwindow.cpp" line="388"/>
-        <source>Protected mode</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="380"/>
-        <source>Help</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="383"/>
-        <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="384"/>
-        <source>Drag and drop image file onto the window is also supported.</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="386"/>
-        <source>Context menu option explanation:</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="387"/>
-        <source>Make window stay on top of all other windows.</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="388"/>
-        <source>Avoid close window accidentally. (eg. by double clicking the window)</source>
-        <translation type="unfinished"></translation>
-    </message>
-</context>
-<context>
-    <name>main</name>
-    <message>
-        <location filename="../main.cpp" line="24"/>
-        <source>File list.</source>
-        <translation type="unfinished"></translation>
-    </message>
-</context>
-</TS>

languages/PineapplePictures_zh_CN.ts

@@ -1,122 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE TS>
-<TS version="2.1" language="zh_CN">
-<context>
-    <name>GraphicsScene</name>
-    <message>
-        <location filename="../graphicsscene.cpp" line="16"/>
-        <source>Drag image here</source>
-        <translation>拖放图片至此</translation>
-    </message>
-</context>
-<context>
-    <name>GraphicsView</name>
-    <message>
-        <location filename="../graphicsview.cpp" line="239"/>
-        <source>File url list is empty</source>
-        <translation>文件 URL 列表为空</translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="44"/>
-        <source>File is not a valid image</source>
-        <translation>文件不是有效的图片文件</translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="247"/>
-        <source>Image data is invalid</source>
-        <translation>图片数据无效</translation>
-    </message>
-    <message>
-        <location filename="../graphicsview.cpp" line="254"/>
-        <source>Not supported mimedata: %1</source>
-        <translation>不受支持的 MimeData 格式：%1</translation>
-    </message>
-</context>
-<context>
-    <name>MainWindow</name>
-    <message>
-        <location filename="../mainwindow.cpp" line="143"/>
-        <source>File url list is empty</source>
-        <translation>文件 URL 列表为空</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="322"/>
-        <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="343"/>
-        <source>Copy P&amp;ixmap</source>
-        <translation>复制位图(&amp;I)</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="348"/>
-        <source>Copy &amp;File Path</source>
-        <translation>复制文件路径(&amp;F)</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="358"/>
-        <source>&amp;Paste Image</source>
-        <translation>粘贴图像(&amp;P)</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="363"/>
-        <source>&amp;Paste Image File</source>
-        <translation>粘贴图像文件(&amp;P)</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="368"/>
-        <location filename="../mainwindow.cpp" line="387"/>
-        <source>Stay on top</source>
-        <translation>总在最前</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="374"/>
-        <location filename="../mainwindow.cpp" line="388"/>
-        <source>Protected mode</source>
-        <translation>保护模式</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="380"/>
-        <source>Help</source>
-        <translation>帮助</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="383"/>
-        <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="384"/>
-        <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="386"/>
-        <source>Context menu option explanation:</source>
-        <translation>菜单项说明：</translation>
-    </message>
-    <message>
-        <location filename="../mainwindow.cpp" line="387"/>
-        <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="388"/>
-        <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>main</name>
-    <message>
-        <location filename="../main.cpp" line="24"/>
-        <source>File list.</source>
-        <translation>文件列表。</translation>
-    </message>
-</context>
-</TS>

mainwindow.cpp

@@ -1,553 +0,0 @@
-#include "mainwindow.h"
-
-#include "toolbutton.h"
-#include "bottombuttongroup.h"
-#include "graphicsview.h"
-#include "navigatorview.h"
-#include "graphicsscene.h"
-
-#include <QMouseEvent>
-#include <QMovie>
-#include <QDebug>
-#include <QGraphicsTextItem>
-#include <QApplication>
-#include <QStyle>
-#include <QScreen>
-#include <QMenu>
-#include <QShortcut>
-#include <QDir>
-#include <QCollator>
-#include <QClipboard>
-#include <QMimeData>
-
-#ifdef _WIN32
-#include <windows.h>
-#endif // _WIN32
-
-MainWindow::MainWindow(QWidget *parent) :
-    QMainWindow(parent)
-{
-    this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
-    this->setAttribute(Qt::WA_TranslucentBackground, true);
-    this->setMinimumSize(710, 530);
-    this->setWindowIcon(QIcon(":/icons/app-icon.svg"));
-
-    m_fadeOutAnimation = new QPropertyAnimation(this, "windowOpacity");
-    m_fadeOutAnimation->setDuration(300);
-    m_fadeOutAnimation->setStartValue(1);
-    m_fadeOutAnimation->setEndValue(0);
-    m_floatUpAnimation = new QPropertyAnimation(this, "geometry");
-    m_floatUpAnimation->setDuration(300);
-    m_floatUpAnimation->setEasingCurve(QEasingCurve::OutCirc);
-    m_exitAnimationGroup = new QParallelAnimationGroup;
-    m_exitAnimationGroup->addAnimation(m_fadeOutAnimation);
-    m_exitAnimationGroup->addAnimation(m_floatUpAnimation);
-    connect(m_exitAnimationGroup, &QParallelAnimationGroup::finished,
-            this, &QMainWindow::close);
-
-    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->setScene(scene);
-    m_gv->setMainView(m_graphicsView);
-    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
-
-    connect(m_graphicsView, &GraphicsView::navigatorViewRequired,
-            this, [ = ](bool required, qreal angle){
-        m_gv->resetTransform();
-        m_gv->rotate(angle);
-        m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
-        m_gv->setVisible(required);
-        m_gv->updateMainViewportRegion();
-    });
-
-    connect(m_graphicsView, &GraphicsView::viewportRectChanged,
-            m_gv, &NavigatorView::updateMainViewportRegion);
-
-    connect(m_graphicsView, &GraphicsView::requestGallery,
-            this, &MainWindow::loadGalleryBySingleLocalFile);
-
-    m_closeButton = new ToolButton(m_graphicsView);
-    m_closeButton->setIcon(QIcon(":/icons/window-close"));
-    m_closeButton->setIconSize(QSize(50, 50));
-
-    connect(m_closeButton, &QAbstractButton::clicked,
-            this, &MainWindow::closeWindow);
-
-    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();
-        }
-    });
-    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomInBtnClicked,
-            this, [ = ](){ m_graphicsView->zoomView(1.25); });
-    connect(m_bottomButtonGroup, &BottomButtonGroup::zoomOutBtnClicked,
-            this, [ = ](){ m_graphicsView->zoomView(0.75); });
-    connect(m_bottomButtonGroup, &BottomButtonGroup::toggleCheckerboardBtnClicked,
-            this, [ = ](){ m_graphicsView->toggleCheckerboard(); });
-    connect(m_bottomButtonGroup, &BottomButtonGroup::rotateRightBtnClicked,
-            this, [ = ](){
-        m_graphicsView->resetScale();
-        m_graphicsView->rotateView(90);
-        m_graphicsView->checkAndDoFitInView();
-        m_gv->setVisible(false);
-    });
-
-    m_bottomButtonGroup->setOpacity(0, false);
-    m_gv->setOpacity(0, false);
-    m_closeButton->setOpacity(0, false);
-
-    QShortcut * quitAppShorucut = new QShortcut(QKeySequence(Qt::Key_Space), this);
-    connect(quitAppShorucut, &QShortcut::activated,
-            std::bind(&MainWindow::quitAppAction, this, false));
-
-    QShortcut * prevPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageUp), this);
-    connect(prevPictureShorucut, &QShortcut::activated,
-            this, &MainWindow::galleryPrev);
-
-    QShortcut * nextPictureShorucut = new QShortcut(QKeySequence(Qt::Key_PageDown), this);
-    connect(nextPictureShorucut, &QShortcut::activated,
-            this, &MainWindow::galleryNext);
-
-    centerWindow();
-}
-
-MainWindow::~MainWindow()
-{
-
-}
-
-void MainWindow::showUrls(const QList<QUrl> &urls)
-{
-    if (!urls.isEmpty()) {
-        if (urls.count() == 1) {
-            m_graphicsView->showFileFromUrl(urls.first(), true);
-        } else {
-            m_graphicsView->showFileFromUrl(urls.first(), false);
-            m_files = urls;
-            m_currentFileIndex = 0;
-        }
-    } else {
-        m_graphicsView->showText(tr("File url list is empty"));
-        return;
-    }
-
-    m_gv->fitInView(m_gv->sceneRect(), Qt::KeepAspectRatio);
-}
-
-void MainWindow::adjustWindowSizeBySceneRect()
-{
-    QSize sceneSize = m_graphicsView->sceneRect().toRect().size();
-    QSize sceneSizeWithMargins = sceneSize + QSize(130, 125);
-
-    if (m_graphicsView->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) {
-            // we can show the picture by increase the window size.
-            if (screenSize.expandedTo(sceneSizeWithMargins) == screenSize) {
-                this->resize(sceneSizeWithMargins);
-            } else {
-                this->resize(screenSize);
-            }
-            // 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
-            // just call resetScale() here to ensure the thing is no longer scaled.
-            m_graphicsView->resetScale();
-            centerWindow();
-        } else {
-            // toggle maximum
-            showMaximized();
-        }
-    }
-}
-
-// 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::loadGalleryBySingleLocalFile(const QString &path)
-{
-    QFileInfo info(path);
-    QDir dir(info.path());
-    QString currentFileName = info.fileName();
-    QStringList entryList = dir.entryList({"*.jpg", "*.jpeg", "*.png", "*.gif", "*.svg", "*.bmp"},
-                                          QDir::Files | QDir::NoSymLinks, QDir::NoSort);
-
-    QCollator collator;
-    collator.setNumericMode(true);
-
-    std::sort(entryList.begin(), entryList.end(), collator);
-
-    m_currentFileIndex = -1;
-    m_files.clear();
-
-    for (int i = 0; i < entryList.count(); i++) {
-        const QString & oneEntry = entryList.at(i);
-        m_files.append(QUrl::fromLocalFile(dir.absoluteFilePath(oneEntry)));
-        if (oneEntry == currentFileName) {
-            m_currentFileIndex = i;
-        }
-    }
-
-//    qDebug() << m_files << m_currentFileIndex;
-}
-
-void MainWindow::galleryPrev()
-{
-    int count = m_files.count();
-    if (m_currentFileIndex < 0 || m_files.isEmpty() || m_currentFileIndex >= m_files.count()) {
-        return;
-    }
-
-    m_currentFileIndex = m_currentFileIndex - 1 < 0 ? count - 1 : m_currentFileIndex - 1;
-
-    m_graphicsView->showFileFromUrl(m_files.at(m_currentFileIndex), false);
-}
-
-void MainWindow::galleryNext()
-{
-    int count = m_files.count();
-    if (m_currentFileIndex < 0 || m_files.isEmpty() || m_currentFileIndex >= m_files.count()) {
-        return;
-    }
-
-    m_currentFileIndex = m_currentFileIndex + 1 == count ? 0 : m_currentFileIndex + 1;
-
-    m_graphicsView->showFileFromUrl(m_files.at(m_currentFileIndex), false);
-}
-
-void MainWindow::showEvent(QShowEvent *event)
-{
-    updateWidgetsPosition();
-
-    return QMainWindow::showEvent(event);
-}
-
-void MainWindow::enterEvent(QEvent *event)
-{
-    m_bottomButtonGroup->setOpacity(1);
-    m_gv->setOpacity(1);
-
-    m_closeButton->setOpacity(1);
-
-    return QMainWindow::enterEvent(event);
-}
-
-void MainWindow::leaveEvent(QEvent *event)
-{
-    m_bottomButtonGroup->setOpacity(0);
-    m_gv->setOpacity(0);
-
-    m_closeButton->setOpacity(0);
-
-    return QMainWindow::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 QMainWindow::mousePressEvent(event);
-}
-
-void MainWindow::mouseMoveEvent(QMouseEvent *event)
-{
-    if (event->buttons() & Qt::LeftButton && m_clickedOnWindow) {
-        move(event->globalPos() - m_oldMousePos);
-        event->accept();
-    }
-
-    return QMainWindow::mouseMoveEvent(event);
-}
-
-void MainWindow::mouseReleaseEvent(QMouseEvent *event)
-{
-    m_clickedOnWindow = false;
-
-    return QMainWindow::mouseReleaseEvent(event);
-}
-
-void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
-{
-    quitAppAction();
-
-    return QMainWindow::mouseDoubleClickEvent(event);
-}
-
-void MainWindow::wheelEvent(QWheelEvent *event)
-{
-    if (event->delta() > 0) {
-        m_graphicsView->zoomView(1.25);
-    } else {
-        m_graphicsView->zoomView(0.8);
-    }
-}
-
-void MainWindow::resizeEvent(QResizeEvent *event)
-{
-    updateWidgetsPosition();
-
-    return QMainWindow::resizeEvent(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, [ = ](){
-        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 * helpAction = new QAction(tr("Help"));
-    connect(helpAction, &QAction::triggered, this, [ = ](){
-        QStringList sl {
-            tr("Launch application with image file path as argument to load the file."),
-            tr("Drag and drop image file onto the window is also supported."),
-            "",
-            tr("Context menu option explanation:"),
-            (tr("Stay on top") + " : " + tr("Make window stay on top of all other windows.")),
-            (tr("Protected mode") + " : " + tr("Avoid close window accidentally. (eg. by double clicking the window)"))
-        };
-        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(helpAction);
-    menu->exec(mapToGlobal(event->pos()));
-    menu->deleteLater();
-
-    return QMainWindow::contextMenuEvent(event);
-}
-
-bool MainWindow::nativeEvent(const QByteArray &eventType, void *message, long *result)
-{
-#ifdef _WIN32
-    // https://stackoverflow.com/questions/43505580/qt-windows-resizable-frameless-window
-    // Too lazy to do this now.. just stackoverflow it and did a copy and paste..
-    Q_UNUSED(eventType)
-    MSG* msg = static_cast<MSG*>(message);
-
-    if (msg->message == WM_NCHITTEST) {
-        if (isMaximized()) {
-            return false;
-        }
-
-        *result = 0;
-        const LONG borderWidth = 8;
-        RECT winrect;
-        GetWindowRect(reinterpret_cast<HWND>(winId()), &winrect);
-
-        // must be short to correctly work with multiple monitors (negative coordinates)
-        short x = msg->lParam & 0x0000FFFF;
-        short y = (msg->lParam & 0xFFFF0000) >> 16;
-
-        bool resizeWidth = minimumWidth() != maximumWidth();
-        bool resizeHeight = minimumHeight() != maximumHeight();
-        if (resizeWidth) {
-            //left border
-            if (x >= winrect.left && x < winrect.left + borderWidth) {
-                *result = HTLEFT;
-            }
-            //right border
-            if (x < winrect.right && x >= winrect.right - borderWidth) {
-                *result = HTRIGHT;
-            }
-        }
-        if (resizeHeight) {
-            //bottom border
-            if (y < winrect.bottom && y >= winrect.bottom - borderWidth) {
-                *result = HTBOTTOM;
-            }
-            //top border
-            if (y >= winrect.top && y < winrect.top + borderWidth) {
-                *result = HTTOP;
-            }
-        }
-        if (resizeWidth && resizeHeight) {
-            //bottom left corner
-            if (x >= winrect.left && x < winrect.left + borderWidth &&
-                    y < winrect.bottom && y >= winrect.bottom - borderWidth)
-            {
-                *result = HTBOTTOMLEFT;
-            }
-            //bottom right corner
-            if (x < winrect.right && x >= winrect.right - borderWidth &&
-                    y < winrect.bottom && y >= winrect.bottom - borderWidth)
-            {
-                *result = HTBOTTOMRIGHT;
-            }
-            //top left corner
-            if (x >= winrect.left && x < winrect.left + borderWidth &&
-                    y >= winrect.top && y < winrect.top + borderWidth)
-            {
-                *result = HTTOPLEFT;
-            }
-            //top right corner
-            if (x < winrect.right && x >= winrect.right - borderWidth &&
-                    y >= winrect.top && y < winrect.top + borderWidth)
-            {
-                *result = HTTOPRIGHT;
-            }
-        }
-
-        if (*result != 0)
-            return true;
-
-        QWidget *action = QApplication::widgetAt(QCursor::pos());
-        if (action == this) {
-            *result = HTCAPTION;
-            return true;
-        }
-    }
-
-    return false;
-#else
-    return QMainWindow::nativeEvent(eventType, message, result);
-#endif // _WIN32
-}
-
-void MainWindow::centerWindow()
-{
-    this->setGeometry(
-        QStyle::alignedRect(
-            Qt::LeftToRight,
-            Qt::AlignCenter,
-            this->size(),
-            qApp->screenAt(QCursor::pos())->geometry()
-        )
-    );
-}
-
-void MainWindow::closeWindow()
-{
-    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();
-}
-
-void MainWindow::updateWidgetsPosition()
-{
-    m_closeButton->move(width() - m_closeButton->width(), 0);
-    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);
-}
-
-void MainWindow::toggleStayOnTop()
-{
-    setWindowFlag(Qt::WindowStaysOnTopHint, !stayOnTop());
-    show();
-}
-
-bool MainWindow::stayOnTop()
-{
-    return windowFlags().testFlag(Qt::WindowStaysOnTopHint);
-}
-
-void MainWindow::quitAppAction(bool force)
-{
-    if (!m_protectedMode || force) {
-        closeWindow();
-    }
-}

pineapple-pictures.pro

@@ -0,0 +1,82 @@
+QT       += core widgets gui svg
+
+TARGET = ppic
+TEMPLATE = app
+
+# 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++11 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
+
+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
+
+TRANSLATIONS = \
+    app/translations/PineapplePictures.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
+
+# 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 convert -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) 2020 Gary Wang

pineapple-pictures.rc

@@ -1 +0,0 @@
-IDI_ICON1               ICON    DISCARDABLE     "icons/app-icon.ico"