only used icons compiled into executable, update languages, fixed loading of qt locales, updated/fixed compilation

.appveyor.yml

@@ -5,7 +5,7 @@ clone_depth: 1
 clone_folder: C:\rssguard
 
 environment:
-  QTDIR: 'C:\Qt\5.9\msvc2017_64'
+  QTDIR: 'C:\Qt\5.12\msvc2017_64'
   QMAKESPEC: win32-msvc
   COMPILERBAT: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"'
   access_token:

.gitignore

@@ -23,5 +23,4 @@
 # Other files.
 *.autosave
 *.user*
-resources/localizations/*rssguard*
+localization/*qm
-localization/rssguard*qm

resources/icons.qrc

@@ -0,0 +1,63 @@
+<RCC>
+  <qresource prefix="/">
+    <file>./graphics/Faenza/actions/64/application-exit.png</file>
+    <file>./graphics/Faenza/actions/64/back.png</file>
+    <file>./graphics/Faenza/actions/64/call-start.png</file>
+    <file>./graphics/Faenza/actions/64/dialog-yes.png</file>
+    <file>./graphics/Faenza/actions/64/document-export.png</file>
+    <file>./graphics/Faenza/actions/64/document-import.png</file>
+    <file>./graphics/Faenza/actions/64/document-new.png</file>
+    <file>./graphics/Faenza/actions/64/document-open.png</file>
+    <file>./graphics/Faenza/actions/64/document-properties.png</file>
+    <file>./graphics/Faenza/actions/64/document-revert.png</file>
+    <file>./graphics/Faenza/actions/64/down.png</file>
+    <file>./graphics/Faenza/actions/64/edit-clear.png</file>
+    <file>./graphics/Faenza/actions/64/format-indent-more.png</file>
+    <file>./graphics/Faenza/actions/64/format-justify-fill.png</file>
+    <file>./graphics/Faenza/actions/64/forward.png</file>
+    <file>./graphics/Faenza/actions/64/go-down.png</file>
+    <file>./graphics/Faenza/actions/64/go-home.png</file>
+    <file>./graphics/Faenza/actions/64/go-jump.png</file>
+    <file>./graphics/Faenza/actions/64/go-next.png</file>
+    <file>./graphics/Faenza/actions/64/go-previous.png</file>
+    <file>./graphics/Faenza/actions/64/go-up.png</file>
+    <file>./graphics/Faenza/actions/64/gtk-edit.png</file>
+    <file>./graphics/Faenza/actions/64/help-about.png</file>
+    <file>./graphics/Faenza/actions/64/insert-object.png</file>
+    <file>./graphics/Faenza/actions/64/list-add.png</file>
+    <file>./graphics/Faenza/actions/64/list-remove.png</file>
+    <file>./graphics/Faenza/actions/64/mail-attachment.png</file>
+    <file>./graphics/Faenza/actions/64/mail-inbox.png</file>
+    <file>./graphics/Faenza/actions/64/mail-mark-important.png</file>
+    <file>./graphics/Faenza/actions/64/mail-mark-junk.png</file>
+    <file>./graphics/Faenza/actions/64/mail-mark-read.png</file>
+    <file>./graphics/Faenza/actions/64/mail-mark-unread.png</file>
+    <file>./graphics/Faenza/actions/64/mail-message-new.png</file>
+    <file>./graphics/Faenza/actions/64/mail-send.png</file>
+    <file>./graphics/Faenza/actions/64/mail-sent.png</file>
+    <file>./graphics/Faenza/actions/64/process-stop.png</file>
+    <file>./graphics/Faenza/actions/64/reload.png</file>
+    <file>./graphics/Faenza/actions/64/system-search.png</file>
+    <file>./graphics/Faenza/actions/64/system-upgrade.png</file>
+    <file>./graphics/Faenza/actions/64/tab-new.png</file>
+    <file>./graphics/Faenza/actions/64/up.png</file>
+    <file>./graphics/Faenza/actions/64/view-fullscreen.png</file>
+    <file>./graphics/Faenza/actions/64/view-refresh.png</file>
+    <file>./graphics/Faenza/actions/64/view-restore.png</file>
+    <file>./graphics/Faenza/actions/64/window-close.png</file>
+    <file>./graphics/Faenza/categories/64/applications-internet.png</file>
+    <file>./graphics/Faenza/categories/64/applications-office.png</file>
+    <file>./graphics/Faenza/categories/64/applications-science.png</file>
+    <file>./graphics/Faenza/emblems/64/emblem-downloads.png</file>
+    <file>./graphics/Faenza/emblems/64/emblem-system.png</file>
+    <file>./graphics/Faenza/index.theme</file>
+    <file>./graphics/Faenza/mimetypes/64/image-x-generic.png</file>
+    <file>./graphics/Faenza/mimetypes/64/text-html.png</file>
+    <file>./graphics/Faenza/places/64/folder.png</file>
+    <file>./graphics/Faenza/places/64/user-trash.png</file>
+    <file>./graphics/Faenza/status/64/dialog-error.png</file>
+    <file>./graphics/Faenza/status/64/dialog-information.png</file>
+    <file>./graphics/Faenza/status/64/dialog-question.png</file>
+    <file>./graphics/Faenza/status/64/dialog-warning.png</file>
+  </qresource>
+</RCC>

resources/scripts/.generate-used-icons.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# This script will generate .qrc file from used icons.
+#
+# PWD is used as used src root folder.
+# "resources/graphics/Faenza" is used as folder for icons.
+# Output qrc file has paths relative to "resources" folder.
+
+echo_formatted_qrc() {
+  printf "<RCC>\n  <qresource prefix=\"/\">\n"
+  
+  # Sort icons first.
+  readarray -t sorted < <(for a in "$@"; do echo "$a"; done | sort)
+  
+  for ICON_FILE in "${sorted[@]}"; do
+    # We find icon.
+    echo "    <file>$ICON_FILE</file>"
+  done
+  
+  printf "  </qresource>\n</RCC>"
+}
+
+discover_used_icons() {
+  local ROOT_SRC_FOLDER="$(pwd)"
+  local RESOURCES_FOLDER="$ROOT_SRC_FOLDER/../resources"
+  local INDEX_FILE="./graphics/Faenza/index.theme"
+  declare -a ICON_FILES
+  #echo "Root src folder: \"$ROOT_SRC_FOLDER\"."
+  
+  # Now we discover all usages of icons.
+  local ICON_NAMES=$(grep -Prioh '(?<=fromTheme\(QSL\(\")[-a-z]+' "$ROOT_SRC_FOLDER" | sort -u)
+ 
+  cd "$RESOURCES_FOLDER"
+  
+  for ICON_NAME in $ICON_NAMES; do
+    # We find icon.
+    local ICON_FILE="$(find . -name "${ICON_NAME}.png")"
+    ICON_FILES+=("$ICON_FILE")
+  done
+  
+  ICON_FILES+=("$INDEX_FILE")
+  cd "$ROOT_SRC_FOLDER"
+  echo_formatted_qrc ${ICON_FILES[@]}
+}
+
+discover_used_icons

resources/sql.qrc

@@ -1,7 +1,6 @@
 <RCC>
   <qresource prefix="/">
     <file>sql/db_init_mysql.sql</file>   
-    <file>sql/db_init_sqlite.sql</file>
     <file>sql/db_update_mysql_1_2.sql</file>
     <file>sql/db_update_mysql_2_3.sql</file>
     <file>sql/db_update_mysql_3_4.sql</file>
@@ -12,6 +11,8 @@
     <file>sql/db_update_mysql_8_9.sql</file>
     <file>sql/db_update_mysql_9_10.sql</file>
     <file>sql/db_update_mysql_10_11.sql</file>
+
+    <file>sql/db_init_sqlite.sql</file>
     <file>sql/db_update_sqlite_1_2.sql</file>
     <file>sql/db_update_sqlite_2_3.sql</file>
     <file>sql/db_update_sqlite_3_4.sql</file>

rssguard.pro

@@ -2,7 +2,6 @@
 #
 # For license of this file, see <project-root-folder>/LICENSE.md.
 #
-#
 # This is RSS Guard compilation script for qmake.
 #
 # Usage:
@@ -25,8 +24,6 @@
 #                   value of this variable is tweaked automatically.
 #   PREFIX - specifies base folder to which files are copied during "make install"
 #            step, defaults to "$$OUT_PWD/usr" on Linux and to "$$OUT_PWD/app" on Windows.
-#   LRELEASE_EXECUTABLE - specifies the name/path of "lrelease" executable, defaults to "lrelease".
-#
 #
 # Other information:
 #   - supports Windows, Linux, Mac OS X, Android,
@@ -39,9 +36,8 @@
 #
 #################################################################
 
-TEMPLATE    = app
+TEMPLATE = app
-TARGET      = rssguard
+TARGET = rssguard
-DEFINES	    *= QT_USE_QSTRINGBUILDER
 
 message(rssguard: Welcome RSS Guard qmake script.)
 
@@ -54,7 +50,7 @@ APP_LOW_NAME                  = "rssguard"
 APP_REVERSE_NAME              = "com.github.rssguard"
 APP_LOW_H_NAME                = ".rssguard"
 APP_AUTHOR                    = "Martin Rotter"
-APP_COPYRIGHT                 = "(C) 2011-2017 $$APP_AUTHOR"
+APP_COPYRIGHT                 = "(C) 2011-2019 $$APP_AUTHOR"
 APP_VERSION                   = "3.5.7"
 APP_LONG_NAME                 = "$$APP_NAME $$APP_VERSION"
 APP_EMAIL                     = "rotter.martinos@gmail.com"
@@ -63,7 +59,7 @@ APP_URL_ISSUES                = "https://github.com/martinrotter/rssguard/issues
 APP_URL_ISSUES_NEW            = "https://github.com/martinrotter/rssguard/issues/new"
 APP_URL_WIKI                  = "https://github.com/martinrotter/rssguard/wiki"
 APP_USERAGENT                 = "RSS Guard/$$APP_VERSION (github.com/martinrotter/rssguard)"
-APP_DONATE_URL                = "https://martinrotter.github.io/donate/"
+APP_DONATE_URL                = "https://martinrotter.github.io/donate"
 APP_WIN_ARCH                  = "win64"
 
 isEmpty(PREFIX) {
@@ -102,27 +98,22 @@ isEmpty(USE_WEBENGINE) {
 
 message(rssguard: Shadow copy build directory \"$$OUT_PWD\".)
 
-isEmpty(LRELEASE_EXECUTABLE) {
-  LRELEASE_EXECUTABLE = lrelease
-  message(rssguard: LRELEASE_EXECUTABLE variable is not set.)
-}
-
 # Custom definitions.
-DEFINES += APP_VERSION='"\\\"$$APP_VERSION\\\""'
+DEFINES *= APP_VERSION='"\\\"$$APP_VERSION\\\""'
-DEFINES += APP_NAME='"\\\"$$APP_NAME\\\""'
+DEFINES *= APP_NAME='"\\\"$$APP_NAME\\\""'
-DEFINES += APP_LOW_NAME='"\\\"$$APP_LOW_NAME\\\""'
+DEFINES *= APP_LOW_NAME='"\\\"$$APP_LOW_NAME\\\""'
-DEFINES += APP_LOW_H_NAME='"\\\"$$APP_LOW_H_NAME\\\""'
+DEFINES *= APP_LOW_H_NAME='"\\\"$$APP_LOW_H_NAME\\\""'
-DEFINES += APP_LONG_NAME='"\\\"$$APP_LONG_NAME\\\""'
+DEFINES *= APP_LONG_NAME='"\\\"$$APP_LONG_NAME\\\""'
-DEFINES += APP_AUTHOR='"\\\"$$APP_AUTHOR\\\""'
+DEFINES *= APP_AUTHOR='"\\\"$$APP_AUTHOR\\\""'
-DEFINES += APP_EMAIL='"\\\"$$APP_EMAIL\\\""'
+DEFINES *= APP_EMAIL='"\\\"$$APP_EMAIL\\\""'
-DEFINES += APP_URL='"\\\"$$APP_URL\\\""'
+DEFINES *= APP_URL='"\\\"$$APP_URL\\\""'
-DEFINES += APP_URL_ISSUES='"\\\"$$APP_URL_ISSUES\\\""'
+DEFINES *= APP_URL_ISSUES='"\\\"$$APP_URL_ISSUES\\\""'
-DEFINES += APP_URL_ISSUES_NEW='"\\\"$$APP_URL_ISSUES_NEW\\\""'
+DEFINES *= APP_URL_ISSUES_NEW='"\\\"$$APP_URL_ISSUES_NEW\\\""'
-DEFINES += APP_URL_WIKI='"\\\"$$APP_URL_WIKI\\\""'
+DEFINES *= APP_URL_WIKI='"\\\"$$APP_URL_WIKI\\\""'
-DEFINES += APP_USERAGENT='"\\\"$$APP_USERAGENT\\\""'
+DEFINES *= APP_USERAGENT='"\\\"$$APP_USERAGENT\\\""'
-DEFINES += APP_DONATE_URL='"\\\"$$APP_DONATE_URL\\\""'
+DEFINES *= APP_DONATE_URL='"\\\"$$APP_DONATE_URL\\\""'
-DEFINES += APP_SYSTEM_NAME='"\\\"$$QMAKE_HOST.os\\\""'
+DEFINES *= APP_SYSTEM_NAME='"\\\"$$QMAKE_HOST.os\\\""'
-DEFINES += APP_SYSTEM_VERSION='"\\\"$$QMAKE_HOST.arch\\\""'
+DEFINES *= APP_SYSTEM_VERSION='"\\\"$$QMAKE_HOST.arch\\\""'
 
 CODECFORTR  = UTF-8
 CODECFORSRC = UTF-8
@@ -140,18 +131,19 @@ equals(USE_WEBENGINE, false) {
   APP_REVISION = $$sprintf('%1-%2', $$APP_REVISION, nowebengine)
 }
 
-DEFINES += APP_REVISION='"\\\"$$APP_REVISION\\\""'
+DEFINES *= APP_REVISION='"\\\"$$APP_REVISION\\\""'
 
 message(rssguard: RSS Guard version is: \"$$APP_VERSION\".)
 message(rssguard: Detected Qt version: \"$$QT_VERSION\".)
 message(rssguard: Build destination directory: \"$$DESTDIR\".)
 message(rssguard: Prefix directory: \"$$PREFIX\".)
 message(rssguard: Build revision: \"$$APP_REVISION\".)
-message(rssguard: lrelease executable name: \"$$LRELEASE_EXECUTABLE\".)
+message(rssguard: lrelease executable name: \"$$LRELEASE\".)
 
 QT *= core gui widgets sql network xml
 
-CONFIG *= c++11 warn_on
+CONFIG *= c++1z warn_on
+CONFIG -=  debug_and_release
 DEFINES *= QT_USE_QSTRINGBUILDER QT_USE_FAST_CONCATENATION QT_USE_FAST_OPERATOR_PLUS UNICODE _UNICODE
 VERSION = $$APP_VERSION
 
@@ -164,9 +156,41 @@ win32 {
     message(rssguard: Compilling x86_64 variant.)
     QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.02
   }
+
+  # Additionally link against Shell32.
+  LIBS *= Shell32.lib
 }
 
-DISTFILES +=    resources/scripts/uncrustify/uncrustify.cfg
+gcc|g++|clang* {
+  QMAKE_CXXFLAGS *= -std=c++17
+}
+
+msvc {
+  QMAKE_CXXFLAGS *= /std:c++17
+}
+
+clang* {
+  DEFINES *= CLANG=1
+}
+
+# Setup specific compiler options.
+CONFIG(release, debug|release) {
+  message(rssguard: Building in "release" mode.)
+
+  gcc:QMAKE_CXXFLAGS_RELEASE -= -O2
+  clang:QMAKE_CXXFLAGS_RELEASE -= -O2
+  gcc:QMAKE_CXXFLAGS_RELEASE *= -O3
+  clang:QMAKE_CXXFLAGS_RELEASE *= -O3
+}
+else {
+  message(rssguard: Building in "debug" mode.)
+
+  DEFINES *= DEBUG=1
+  gcc:QMAKE_CXXFLAGS_DEBUG *= -Wall
+  clang:QMAKE_CXXFLAGS_DEBUG *= -Wall
+}
+
+DISTFILES += resources/scripts/uncrustify/uncrustify.cfg
 
 MOC_DIR = $$OUT_PWD/moc
 RCC_DIR = $$OUT_PWD/rcc
@@ -196,7 +220,8 @@ win32 {
 
 CONFIG *= resources_big
 RESOURCES += resources/sql.qrc \
-             resources/rssguard.qrc
+             resources/rssguard.qrc \
+             resources/icons.qrc
 
 HEADERS +=  src/core/feeddownloader.h \
             src/core/feedsmodel.h \
@@ -575,39 +600,56 @@ else {
                 src/gui/newspaperpreviewer.ui
 }
 
-TRANSLATIONS += $$PWD/localization/rssguard_cs.ts \
-                $$PWD/localization/rssguard_da.ts \
-                $$PWD/localization/rssguard_de.ts \
-                $$PWD/localization/rssguard_en_GB.ts \
-                $$PWD/localization/rssguard_en.ts \
-                $$PWD/localization/rssguard_es.ts \
-                $$PWD/localization/rssguard_fr.ts \
-                $$PWD/localization/rssguard_he.ts \
-                $$PWD/localization/rssguard_id.ts \
-                $$PWD/localization/rssguard_it.ts \
-                $$PWD/localization/rssguard_ja.ts \
-                $$PWD/localization/rssguard_lt.ts \
-                $$PWD/localization/rssguard_nl.ts \
-                $$PWD/localization/rssguard_pl.ts \
-                $$PWD/localization/rssguard_pt.ts \
-                $$PWD/localization/rssguard_sv.ts \
-                $$PWD/localization/rssguard_zh.ts
-
 INCLUDEPATH +=  $$PWD/. \
                 $$PWD/src \
                 $$PWD/src/gui \
                 $$PWD/src/gui/dialogs \
                 $$PWD/src/dynamic-shortcuts
 
+TRANSLATIONS_WO_QT += $$PWD/localization/rssguard_cs.ts \
+                      $$PWD/localization/rssguard_da.ts \
+                      $$PWD/localization/rssguard_de.ts \
+                      $$PWD/localization/rssguard_en.ts \
+                      $$PWD/localization/rssguard_es.ts \
+                      $$PWD/localization/rssguard_fr.ts \
+                      $$PWD/localization/rssguard_he.ts \
+                      $$PWD/localization/rssguard_id.ts \
+                      $$PWD/localization/rssguard_it.ts \
+                      $$PWD/localization/rssguard_ja.ts \
+                      $$PWD/localization/rssguard_lt.ts \
+                      $$PWD/localization/rssguard_nl.ts \
+                      $$PWD/localization/rssguard_pl.ts \
+                      $$PWD/localization/rssguard_pt.ts \
+                      $$PWD/localization/rssguard_sv.ts \
+                      $$PWD/localization/rssguard_zh.ts
+
+TRANSLATIONS += $$TRANSLATIONS_WO_QT \
+                $$PWD/localization/qtbase_cs.ts \
+                $$PWD/localization/qtbase_da.ts \
+                $$PWD/localization/qtbase_de.ts \
+                $$PWD/localization/qtbase_es.ts \
+                $$PWD/localization/qtbase_fr.ts \
+                $$PWD/localization/qtbase_he.ts \
+                $$PWD/localization/qtbase_it.ts \
+                $$PWD/localization/qtbase_ja.ts \
+                $$PWD/localization/qtbase_lt.ts \
+                $$PWD/localization/qtbase_pl.ts \
+                $$PWD/localization/qtbase_pt.ts \
+                $$PWD/localization/qtbase_sv.ts \
+                $$PWD/localization/qtbase_zh.ts
+
+load(uic)
+uic.commands -= -no-stringliteral
+
 # Create new "make lupdate" target.
 lupdate.target = lupdate
-lupdate.commands = lupdate $$shell_path($$PWD/rssguard.pro)
+lupdate.commands = lupdate -no-obsolete -pro $$shell_quote($$shell_path($$PWD/rssguard.pro)) -ts $$TRANSLATIONS_WO_QT
 
 QMAKE_EXTRA_TARGETS += lupdate
 
 # Make sure QM translations are nerated.
 qtPrepareTool(LRELEASE, lrelease) {
-  system($$LRELEASE_EXECUTABLE -compress $$shell_quote($$shell_path($$PWD/rssguard.pro)))
+  system($$LRELEASE -compress $$shell_quote($$shell_path($$PWD/rssguard.pro)))
 }
 
 # Create new "make 7zip" target and "make zip" target.
@@ -655,20 +697,20 @@ win32 {
 win32 {
   target.path = $$PREFIX
 
-  qt_dlls_root.files = resources/binaries/windows/qt5-msvc2015/*.*
+  qt_dlls_root.files = resources/binaries/windows/qt5-msvc2017/*.*
   qt_dlls_root.path = $$quote($$PREFIX/)
 
-  qt_dlls_plugins.files = resources/binaries/windows/qt5-msvc2015/*
+  qt_dlls_plugins.files = resources/binaries/windows/qt5-msvc2017/*
   qt_dlls_plugins.path = $$quote($$PREFIX/)
 
   INSTALLS += target qt_dlls_root qt_dlls_plugins
 
   equals(USE_WEBENGINE, true) {
     # Copy extra resource files for QtWebEngine.
-    qtwebengine_dlls.files = resources/binaries/windows/qt5-msvc2015-webengine/*
+    qtwebengine_dlls.files = resources/binaries/windows/qt5-msvc2017-webengine/*
     qtwebengine_dlls.path = $$quote($$PREFIX/)
 
-    qtwebengine.files = resources/binaries/windows/qt5-msvc2015-webengine/*.*
+    qtwebengine.files = resources/binaries/windows/qt5-msvc2017-webengine/*.*
     qtwebengine.path = $$quote($$PREFIX/)
 
     INSTALLS += qtwebengine_dlls qtwebengine
@@ -702,7 +744,7 @@ mac {
   CONFIG -= app_bundle
   ICON = resources/macosx/$${TARGET}.icns
   QMAKE_MAC_SDK = macosx10.12
-  QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.7
+  QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.8
   LIBS += -framework AppKit
 
   target.path = $$quote($$PREFIX/Contents/MacOS/)

src/miscellaneous/iconfactory.cpp

@@ -39,15 +39,6 @@ QByteArray IconFactory::toByteArray(const QIcon& icon) {
   return array.toBase64();
 }
 
-QPixmap IconFactory::pixmap(const QString& name) {
-  if (QIcon::themeName() == APP_NO_THEME) {
-    return QPixmap();
-  }
-  else {
-    return QIcon::fromTheme(name).pixmap(64, 64);
-  }
-}
-
 QIcon IconFactory::fromTheme(const QString& name) {
   return QIcon::fromTheme(name);
 }

src/miscellaneous/iconfactory.h

@@ -17,11 +17,7 @@ class IconFactory : public QObject {
   Q_OBJECT
 
   public:
-
+    explicit IconFactory(QObject* parent = nullptr);
-    // Constructor.
-    explicit IconFactory(QObject* parent = 0);
-
-    // Destructor.
     virtual ~IconFactory();
 
     // Used to store/retrieve QIcons from/to Base64-encoded
@@ -29,8 +25,6 @@ class IconFactory : public QObject {
     static QIcon fromByteArray(QByteArray array);
     static QByteArray toByteArray(const QIcon& icon);
 
-    QPixmap pixmap(const QString& name);
-
     // Returns icon from active theme or invalid icon if
     // "no icon theme" is set.
     QIcon fromTheme(const QString& name);
@@ -50,12 +44,14 @@ class IconFactory : public QObject {
     void loadCurrentIconTheme();
 
     // Returns name of currently activated theme for the application.
-    inline QString currentIconTheme() const {
+    QString currentIconTheme() const;
-      return QIcon::themeName();
-    }
 
     // Sets icon theme with given name as the active one and loads it.
     void setCurrentIconTheme(const QString& theme_name);
 };
 
+inline QString IconFactory::currentIconTheme() const {
+  return QIcon::themeName();
+}
+
 #endif // ICONFACTORY_H

src/miscellaneous/localization.cpp

@@ -41,7 +41,7 @@ void Localization::loadActiveLanguage() {
     desired_localization = DEFAULT_LOCALE;
   }
 
-  if (qt_translator->load(QLocale(desired_localization), "qt", QSL("_"), APP_LANG_PATH)) {
+  if (qt_translator->load(QLocale(desired_localization), "qtbase", QSL("_"), APP_LANG_PATH)) {
     Application::installTranslator(qt_translator);
     qDebug("Qt localization '%s' loaded successfully.", qPrintable(desired_localization));
   }