diff --git a/krita/main.cc b/krita/main.cc
index 3e114f4e25..eb3351d799 100644
--- a/krita/main.cc
+++ b/krita/main.cc
@@ -1,552 +1,558 @@
 /*
 * Copyright (c) 1999 Matthias Elter <me@kde.org>
 * Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
 * Copyright (c) 2015 Boudewijn Rempt <boud@valdyas.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
 #include <stdlib.h>
 
 #include <QString>
 #include <QPixmap>
 #include <kis_debug.h>
 #include <QProcess>
 #include <QProcessEnvironment>
 #include <QStandardPaths>
 #include <QDir>
 #include <QDate>
 #include <QLocale>
 #include <QSettings>
 #include <QByteArray>
 #include <QMessageBox>
 #include <QThread>
 
 #if QT_VERSION >= 0x050900
 #include <QOperatingSystemVersion>
 #endif
 
 #include <time.h>
 
 #include <KisApplication.h>
 #include <KoConfig.h>
 #include <KoResourcePaths.h>
 #include <kis_config.h>
 
 #include "data/splash/splash_screen.xpm"
 #include "data/splash/splash_holidays.xpm"
 #include "data/splash/splash_screen_x2.xpm"
 #include "data/splash/splash_holidays_x2.xpm"
 #include "KisDocument.h"
 #include "kis_splash_screen.h"
 #include "KisPart.h"
 #include "KisApplicationArguments.h"
 #include <opengl/kis_opengl.h>
 #include "input/KisQtWidgetsTweaker.h"
 #include <KisUsageLogger.h>
 #include <kis_image_config.h>
 
 #if defined Q_OS_WIN
 #include "config_use_qt_tablet_windows.h"
 #include <windows.h>
 #ifndef USE_QT_TABLET_WINDOWS
 #include <kis_tablet_support_win.h>
 #include <kis_tablet_support_win8.h>
 #else
 #include <dialogs/KisDlgCustomTabletResolution.h>
 #endif
 #include "config-high-dpi-scale-factor-rounding-policy.h"
 #include "config-set-has-border-in-full-screen-default.h"
 #ifdef HAVE_SET_HAS_BORDER_IN_FULL_SCREEN_DEFAULT
 #include <QtPlatformHeaders/QWindowsWindowFunctions>
 #endif
 #include <QLibrary>
 #endif
 
 #if defined HAVE_KCRASH
 #include <kcrash.h>
 #elif defined USE_DRMINGW
 namespace
 {
 void tryInitDrMingw()
 {
     wchar_t path[MAX_PATH];
     QString pathStr = QCoreApplication::applicationDirPath().replace(L'/', L'\\') + QStringLiteral("\\exchndl.dll");
     if (pathStr.size() > MAX_PATH - 1) {
         return;
     }
     int pathLen = pathStr.toWCharArray(path);
     path[pathLen] = L'\0'; // toWCharArray doesn't add NULL terminator
     HMODULE hMod = LoadLibraryW(path);
     if (!hMod) {
         return;
     }
     // No need to call ExcHndlInit since the crash handler is installed on DllMain
     auto myExcHndlSetLogFileNameA = reinterpret_cast<BOOL (APIENTRY *)(const char *)>(GetProcAddress(hMod, "ExcHndlSetLogFileNameA"));
     if (!myExcHndlSetLogFileNameA) {
         return;
     }
     // Set the log file path to %LocalAppData%\kritacrash.log
     QString logFile = QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation).replace(L'/', L'\\') + QStringLiteral("\\kritacrash.log");
     myExcHndlSetLogFileNameA(logFile.toLocal8Bit());
 }
+} // namespace
+#endif
 
+#ifdef Q_OS_WIN
+namespace
+{
 typedef enum ORIENTATION_PREFERENCE {
     ORIENTATION_PREFERENCE_NONE = 0x0,
     ORIENTATION_PREFERENCE_LANDSCAPE = 0x1,
     ORIENTATION_PREFERENCE_PORTRAIT = 0x2,
     ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED = 0x4,
     ORIENTATION_PREFERENCE_PORTRAIT_FLIPPED = 0x8
 } ORIENTATION_PREFERENCE;
 typedef BOOL WINAPI (*pSetDisplayAutoRotationPreferences_t)(
         ORIENTATION_PREFERENCE orientation
         );
 void resetRotation()
 {
     QLibrary user32Lib("user32");
     if (!user32Lib.load()) {
         qWarning() << "Failed to load user32.dll! This really should not happen.";
         return;
     }
     pSetDisplayAutoRotationPreferences_t pSetDisplayAutoRotationPreferences
             = reinterpret_cast<pSetDisplayAutoRotationPreferences_t>(user32Lib.resolve("SetDisplayAutoRotationPreferences"));
     if (!pSetDisplayAutoRotationPreferences) {
         dbgKrita << "Failed to load function SetDisplayAutoRotationPreferences";
         return;
     }
     bool result = pSetDisplayAutoRotationPreferences(ORIENTATION_PREFERENCE_NONE);
     dbgKrita << "SetDisplayAutoRotationPreferences(ORIENTATION_PREFERENCE_NONE) returned" << result;
 }
 } // namespace
 #endif
+
 extern "C" int main(int argc, char **argv)
 {
 
     // The global initialization of the random generator
     qsrand(time(0));
     bool runningInKDE = !qgetenv("KDE_FULL_SESSION").isEmpty();
 
 #if defined HAVE_X11
     qputenv("QT_QPA_PLATFORM", "xcb");
 #endif
 
     // Workaround a bug in QNetworkManager
     qputenv("QT_BEARER_POLL_TIMEOUT", QByteArray::number(-1));
 
     // A per-user unique string, without /, because QLocalServer cannot use names with a / in it
     QString key = "Krita4" + QStandardPaths::writableLocation(QStandardPaths::HomeLocation).replace("/", "_");
     key = key.replace(":", "_").replace("\\","_");
 
     QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts, true);
 
     QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings, true);
     QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
 
 #if QT_VERSION >= 0x050900
     QCoreApplication::setAttribute(Qt::AA_DisableShaderDiskCache, true);
 #endif
 
 #ifdef HAVE_HIGH_DPI_SCALE_FACTOR_ROUNDING_POLICY
     // This rounding policy depends on a series of patches to Qt related to
     // https://bugreports.qt.io/browse/QTBUG-53022. These patches are applied
     // in ext_qt for WIndows (patches 0031-0036).
     //
     // The rounding policy can be set externally by setting the environment
     // variable `QT_SCALE_FACTOR_ROUNDING_POLICY` to one of the following:
     //   Round:            Round up for .5 and above.
     //   Ceil:             Always round up.
     //   Floor:            Always round down.
     //   RoundPreferFloor: Round up for .75 and above.
     //   PassThrough:      Don't round.
     //
     // The default is set to RoundPreferFloor for better behaviour than before,
     // but can be overridden by the above environment variable.
     QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::RoundPreferFloor);
 #endif
 
     const QString configPath = QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation);
     QSettings kritarc(configPath + QStringLiteral("/kritadisplayrc"), QSettings::IniFormat);
 
     bool singleApplication = true;
     bool enableOpenGLDebug = false;
     bool openGLDebugSynchronous = false;
     bool logUsage = true;
     {
 
         singleApplication = kritarc.value("EnableSingleApplication", true).toBool();
         if (kritarc.value("EnableHiDPI", true).toBool()) {
             QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
         }
         if (!qgetenv("KRITA_HIDPI").isEmpty()) {
             QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
         }
 #ifdef HAVE_HIGH_DPI_SCALE_FACTOR_ROUNDING_POLICY
         if (kritarc.value("EnableHiDPIFractionalScaling", true).toBool()) {
             QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
         }
 #endif
 
         if (!qgetenv("KRITA_OPENGL_DEBUG").isEmpty()) {
             enableOpenGLDebug = true;
         } else {
             enableOpenGLDebug = kritarc.value("EnableOpenGLDebug", false).toBool();
         }
         if (enableOpenGLDebug && (qgetenv("KRITA_OPENGL_DEBUG") == "sync" || kritarc.value("OpenGLDebugSynchronous", false).toBool())) {
             openGLDebugSynchronous = true;
         }
 
         KisConfig::RootSurfaceFormat rootSurfaceFormat = KisConfig::rootSurfaceFormat(&kritarc);
         KisOpenGL::OpenGLRenderer preferredRenderer = KisOpenGL::RendererAuto;
 
         logUsage = kritarc.value("LogUsage", true).toBool();
 
         const QString preferredRendererString = kritarc.value("OpenGLRenderer", "auto").toString();
         preferredRenderer = KisOpenGL::convertConfigToOpenGLRenderer(preferredRendererString);
 
 #ifdef Q_OS_WIN
         // Force ANGLE to use Direct3D11. D3D9 doesn't support OpenGL ES 3 and WARP
         //  might get weird crashes atm.
         qputenv("QT_ANGLE_PLATFORM", "d3d11");
 #endif
 
         const QSurfaceFormat format =
             KisOpenGL::selectSurfaceFormat(preferredRenderer, rootSurfaceFormat, enableOpenGLDebug);
 
         if (format.renderableType() == QSurfaceFormat::OpenGLES) {
             QCoreApplication::setAttribute(Qt::AA_UseOpenGLES, true);
         } else {
             QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL, true);
         }
         KisOpenGL::setDefaultSurfaceFormat(format);
         KisOpenGL::setDebugSynchronous(openGLDebugSynchronous);
 
 #ifdef Q_OS_WIN
         // HACK: https://bugs.kde.org/show_bug.cgi?id=390651
         resetRotation();
 #endif
     }
 
     if (logUsage) {
         KisUsageLogger::initialize();
     }
 
 
     QString root;
     QString language;
     {
         // Create a temporary application to get the root
         QCoreApplication app(argc, argv);
         Q_UNUSED(app);
         root = KoResourcePaths::getApplicationRoot();
         QSettings languageoverride(configPath + QStringLiteral("/klanguageoverridesrc"), QSettings::IniFormat);
         languageoverride.beginGroup(QStringLiteral("Language"));
         language = languageoverride.value(qAppName(), "").toString();
     }
 
 
 #ifdef Q_OS_LINUX
     {
         QByteArray originalXdgDataDirs = qgetenv("XDG_DATA_DIRS");
         if (originalXdgDataDirs.isEmpty()) {
             // We don't want to completely override the default
             originalXdgDataDirs = "/usr/local/share/:/usr/share/";
         }
         qputenv("XDG_DATA_DIRS", QFile::encodeName(root + "share") + ":" + originalXdgDataDirs);
     }
 #else
     qputenv("XDG_DATA_DIRS", QFile::encodeName(root + "share"));
 #endif
 
     dbgKrita << "Setting XDG_DATA_DIRS" << qgetenv("XDG_DATA_DIRS");
 
     // Now that the paths are set, set the language. First check the override from the language
     // selection dialog.
 
     dbgKrita << "Override language:" << language;
     bool rightToLeft = false;
     if (!language.isEmpty()) {
         KLocalizedString::setLanguages(language.split(":"));
         // And override Qt's locale, too
         qputenv("LANG", language.split(":").first().toLocal8Bit());
         QLocale locale(language.split(":").first());
         QLocale::setDefault(locale);
 
         const QStringList rtlLanguages = QStringList()
                 << "ar" << "dv" << "he" << "ha" << "ku" << "fa" << "ps" << "ur" << "yi";
 
         if (rtlLanguages.contains(language.split(':').first())) {
             rightToLeft = true;
         }
     }
     else {
         dbgKrita << "Qt UI languages:" << QLocale::system().uiLanguages() << qgetenv("LANG");
 
         // And if there isn't one, check the one set by the system.
         QLocale locale = QLocale::system();
         if (locale.name() != QStringLiteral("en")) {
             QStringList uiLanguages = locale.uiLanguages();
             for (QString &uiLanguage : uiLanguages) {
 
                 // This list of language codes that can have a specifier should
                 // be extended whenever we have translations that need it; right
                 // now, only en, pt, zh are in this situation.
 
                 if (uiLanguage.startsWith("en") || uiLanguage.startsWith("pt")) {
                     uiLanguage.replace(QChar('-'), QChar('_'));
                 }
                 else if (uiLanguage.startsWith("zh-Hant") || uiLanguage.startsWith("zh-TW")) {
                     uiLanguage = "zh_TW";
                 }
                 else if (uiLanguage.startsWith("zh-Hans") || uiLanguage.startsWith("zh-CN")) {
                     uiLanguage = "zh_CN";
                 }
             }
 
             for (int i = 0; i < uiLanguages.size(); i++) {
                 QString uiLanguage = uiLanguages[i];
                 // Strip the country code
                 int idx = uiLanguage.indexOf(QChar('-'));
 
                 if (idx != -1) {
                     uiLanguage = uiLanguage.left(idx);
                     uiLanguages.replace(i, uiLanguage);
                 }
             }
             dbgKrita << "Converted ui languages:" << uiLanguages;
             qputenv("LANG", uiLanguages.first().toLocal8Bit());
 #ifdef Q_OS_MAC
             // See https://bugs.kde.org/show_bug.cgi?id=396370
             KLocalizedString::setLanguages(QStringList() << uiLanguages.first());
 #else
             KLocalizedString::setLanguages(QStringList() << uiLanguages);
 #endif
         }
     }
 
 #if defined Q_OS_WIN && defined USE_QT_TABLET_WINDOWS && defined QT_HAS_WINTAB_SWITCH
     const bool forceWinTab = !KisConfig::useWin8PointerInputNoApp(&kritarc);
     QCoreApplication::setAttribute(Qt::AA_MSWindowsUseWinTabAPI, forceWinTab);
 
     if (qEnvironmentVariableIsEmpty("QT_WINTAB_DESKTOP_RECT") &&
         qEnvironmentVariableIsEmpty("QT_IGNORE_WINTAB_MAPPING")) {
 
         QRect customTabletRect;
         KisDlgCustomTabletResolution::Mode tabletMode =
             KisDlgCustomTabletResolution::getTabletMode(&customTabletRect);
         KisDlgCustomTabletResolution::applyConfiguration(tabletMode, customTabletRect);
     }
 #endif
 
     // first create the application so we can create a pixmap
     KisApplication app(key, argc, argv);
 
 #ifdef HAVE_SET_HAS_BORDER_IN_FULL_SCREEN_DEFAULT
     if (QCoreApplication::testAttribute(Qt::AA_UseDesktopOpenGL)) {
         QWindowsWindowFunctions::setHasBorderInFullScreenDefault(true);
     }
 #endif
 
     KisUsageLogger::writeHeader();
 
     if (!language.isEmpty()) {
         if (rightToLeft) {
             app.setLayoutDirection(Qt::RightToLeft);
         }
         else {
             app.setLayoutDirection(Qt::LeftToRight);
         }
     }
     KLocalizedString::setApplicationDomain("krita");
 
     dbgKrita << "Available translations" << KLocalizedString::availableApplicationTranslations();
     dbgKrita << "Available domain translations" << KLocalizedString::availableDomainTranslations("krita");
 
 
 #ifdef Q_OS_WIN
     QDir appdir(KoResourcePaths::getApplicationRoot());
     QString path = qgetenv("PATH");
     qputenv("PATH", QFile::encodeName(appdir.absolutePath() + "/bin" + ";"
                                       + appdir.absolutePath() + "/lib" + ";"
                                       + appdir.absolutePath() + "/Frameworks" + ";"
                                       + appdir.absolutePath() + ";"
                                       + path));
 
     dbgKrita << "PATH" << qgetenv("PATH");
 #endif
 
     if (qApp->applicationDirPath().contains(KRITA_BUILD_DIR)) {
         qFatal("FATAL: You're trying to run krita from the build location. You can only run Krita from the installation location.");
     }
 
 
 #if defined HAVE_KCRASH
     KCrash::initialize();
 #elif defined USE_DRMINGW
     tryInitDrMingw();
 #endif
 
     // If we should clear the config, it has to be done as soon as possible after
     // KisApplication has been created. Otherwise the config file may have been read
     // and stored in a KConfig object we have no control over.
     app.askClearConfig();
 
     KisApplicationArguments args(app);
 
     if (singleApplication && app.isRunning()) {
         // only pass arguments to main instance if they are not for batch processing
         // any batch processing would be done in this separate instance
         const bool batchRun = args.exportAs() || args.exportSequence();
 
         if (!batchRun) {
             QByteArray ba = args.serialize();
             if (app.sendMessage(ba)) {
                 return 0;
             }
         }
     }
 
     if (!runningInKDE) {
         // Icons in menus are ugly and distracting
         app.setAttribute(Qt::AA_DontShowIconsInMenus);
     }
 
     app.installEventFilter(KisQtWidgetsTweaker::instance());
 
     if (!args.noSplash()) {
         // then create the pixmap from an xpm: we cannot get the
         // location of our datadir before we've started our components,
         // so use an xpm.
         QDate currentDate = QDate::currentDate();
         QWidget *splash = 0;
         if (currentDate > QDate(currentDate.year(), 12, 4) ||
                 currentDate < QDate(currentDate.year(), 1, 9)) {
             splash = new KisSplashScreen(app.applicationVersion(), QPixmap(splash_holidays_xpm), QPixmap(splash_holidays_x2_xpm));
         }
         else {
             splash = new KisSplashScreen(app.applicationVersion(), QPixmap(splash_screen_xpm), QPixmap(splash_screen_x2_xpm));
         }
 
         app.setSplashScreen(splash);
     }
 
 #if defined Q_OS_WIN
     KisConfig cfg(false);
     bool supportedWindowsVersion = true;
 #if QT_VERSION >= 0x050900
     QOperatingSystemVersion osVersion = QOperatingSystemVersion::current();
     if (osVersion.type() == QOperatingSystemVersion::Windows) {
         if (osVersion.majorVersion() >= QOperatingSystemVersion::Windows7.majorVersion()) {
             supportedWindowsVersion  = true;
         }
         else {
             supportedWindowsVersion  = false;
             if (cfg.readEntry("WarnedAboutUnsupportedWindows", false)) {
                 QMessageBox::information(0,
                                          i18nc("@title:window", "Krita: Warning"),
                                          i18n("You are running an unsupported version of Windows: %1.\n"
                                               "This is not recommended. Do not report any bugs.\n"
                                               "Please update to a supported version of Windows: Windows 7, 8, 8.1 or 10.", osVersion.name()));
                 cfg.writeEntry("WarnedAboutUnsupportedWindows", true);
 
             }
         }
     }
 #endif
 #ifndef USE_QT_TABLET_WINDOWS
     {
         if (cfg.useWin8PointerInput() && !KisTabletSupportWin8::isAvailable()) {
             cfg.setUseWin8PointerInput(false);
         }
         if (!cfg.useWin8PointerInput()) {
             bool hasWinTab = KisTabletSupportWin::init();
             if (!hasWinTab && supportedWindowsVersion) {
                 if (KisTabletSupportWin8::isPenDeviceAvailable()) {
                     // Use WinInk automatically
                     cfg.setUseWin8PointerInput(true);
                 } else if (!cfg.readEntry("WarnedAboutMissingWinTab", false)) {
                     if (KisTabletSupportWin8::isAvailable()) {
                         QMessageBox::information(nullptr,
                                                  i18n("Krita Tablet Support"),
                                                  i18n("Cannot load WinTab driver and no Windows Ink pen devices are found. If you have a drawing tablet, please make sure the tablet driver is properly installed."),
                                                  QMessageBox::Ok, QMessageBox::Ok);
                     } else {
                         QMessageBox::information(nullptr,
                                                  i18n("Krita Tablet Support"),
                                                  i18n("Cannot load WinTab driver. If you have a drawing tablet, please make sure the tablet driver is properly installed."),
                                                  QMessageBox::Ok, QMessageBox::Ok);
                     }
                     cfg.writeEntry("WarnedAboutMissingWinTab", true);
                 }
             }
         }
         if (cfg.useWin8PointerInput()) {
             KisTabletSupportWin8 *penFilter = new KisTabletSupportWin8();
             if (penFilter->init()) {
                 // penFilter.registerPointerDeviceNotifications();
                 app.installNativeEventFilter(penFilter);
                 dbgKrita << "Using Win8 Pointer Input for tablet support";
             } else {
                 dbgKrita << "No Win8 Pointer Input available";
                 delete penFilter;
             }
         }
     }
 #elif defined QT_HAS_WINTAB_SWITCH
 
     // Check if WinTab/WinInk has actually activated
     const bool useWinTabAPI = app.testAttribute(Qt::AA_MSWindowsUseWinTabAPI);
 
     if (useWinTabAPI != !cfg.useWin8PointerInput()) {
         cfg.setUseWin8PointerInput(useWinTabAPI);
     }
 
 #endif
 #endif
 
     if (!app.start(args)) {
         return 1;
     }
 
 #if QT_VERSION >= 0x050700
     app.setAttribute(Qt::AA_CompressHighFrequencyEvents, false);
 #endif
 
     // Set up remote arguments.
     QObject::connect(&app, SIGNAL(messageReceived(QByteArray,QObject*)),
                      &app, SLOT(remoteArguments(QByteArray,QObject*)));
 
     QObject::connect(&app, SIGNAL(fileOpenRequest(QString)),
                      &app, SLOT(fileOpenRequested(QString)));
 
     // Hardware information
     KisUsageLogger::write("\nHardware Information\n");
     KisUsageLogger::write(QString("  GPU Acceleration: %1").arg(kritarc.value("OpenGLRenderer", "auto").toString()));
     KisUsageLogger::write(QString("  Memory: %1 Mb").arg(KisImageConfig(true).totalRAM()));
     KisUsageLogger::write(QString("  Number of Cores: %1").arg(QThread::idealThreadCount()));
     KisUsageLogger::write(QString("  Swap Location: %1\n").arg(KisImageConfig(true).swapDir()));
 
     int state = app.exec();
 
     {
         QSettings kritarc(configPath + QStringLiteral("/kritadisplayrc"), QSettings::IniFormat);
         kritarc.setValue("canvasState", "OPENGL_SUCCESS");
     }
 
     if (logUsage) {
         KisUsageLogger::close();
     }
 
     return state;
 }