diff --git a/krita/main.cc b/krita/main.cc
index 03efb3677f..6afffe5419 100644
--- a/krita/main.cc
+++ b/krita/main.cc
@@ -1,579 +1,594 @@
 /*
 * 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>
 
 #include <QOperatingSystemVersion>
 
 #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>
 
 #ifdef Q_OS_ANDROID
 #include <QtAndroid>
 #endif
 
 #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
 
+#ifdef Q_OS_ANDROID
+extern "C" JNIEXPORT void JNICALL
+Java_org_krita_android_JNIWrappers_saveState(JNIEnv* /*env*/,
+                                             jobject /*obj*/,
+                                             jint    /*n*/)
+{
+    KisPart *kisPart = KisPart::instance();
+    QList<QPointer<KisDocument>> list = kisPart->documents();
+    for (auto doc: list)
+    {
+        doc->autoSaveOnPause();
+    }
+}
+#endif
+
 #ifdef Q_OS_ANDROID
 __attribute__ ((visibility ("default")))
 #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);
 
     QCoreApplication::setAttribute(Qt::AA_DisableShaderDiskCache, true);
 
 #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
 
 #ifdef Q_OS_ANDROID
     const QString write_permission = "android.permission.WRITE_EXTERNAL_STORAGE";
     const QStringList permissions = { write_permission };
     const QtAndroid::PermissionResultMap resultHash =
             QtAndroid::requestPermissionsSync(QStringList(permissions));
 
     if (resultHash[write_permission] == QtAndroid::PermissionResult::Denied) {
         // TODO: show a dialog and graciously exit
         dbgKrita << "Permission denied by the user";
     }
     else {
         dbgKrita << "Permission granted";
     }
 #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();
 
 #ifdef Q_OS_WIN
         const QString preferredRendererString = kritarc.value("OpenGLRenderer", "angle").toString();
 #else
         const QString preferredRendererString = kritarc.value("OpenGLRenderer", "auto").toString();
 #endif
         preferredRenderer = KisOpenGL::convertConfigToOpenGLRenderer(preferredRendererString);
 
         const KisOpenGL::RendererConfig config =
             KisOpenGL::selectSurfaceConfig(preferredRenderer, rootSurfaceFormat, enableOpenGLDebug);
 
         KisOpenGL::setDefaultSurfaceConfig(config);
         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
         QLocale locale(language.split(":").first());
         QLocale::setDefault(locale);
 #ifdef Q_OS_MAC
         // prevents python >=3.7 nl_langinfo(CODESET) fail bug 417312.
         qputenv("LANG", (locale.name() + ".UTF-8").toLocal8Bit());
 #else
         qputenv("LANG", locale.name().toLocal8Bit());
 #endif
 
 
         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";
                 }
             }
 
             QString envLanguage = uiLanguages.first();
             envLanguage.replace(QChar('-'), QChar('_'));
 
             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;
 #ifdef Q_OS_MAC
             // See https://bugs.kde.org/show_bug.cgi?id=396370
             KLocalizedString::setLanguages(QStringList() << uiLanguages.first());
             qputenv("LANG", (envLanguage + ".UTF-8").toLocal8Bit());
 #else
             KLocalizedString::setLanguages(QStringList() << uiLanguages);
             qputenv("LANG", envLanguage.toLocal8Bit());
 #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);
     KisUsageLogger::writeHeader();
     KisOpenGL::initialize();
 
 #ifdef HAVE_SET_HAS_BORDER_IN_FULL_SCREEN_DEFAULT
     if (QCoreApplication::testAttribute(Qt::AA_UseDesktopOpenGL)) {
         QWindowsWindowFunctions::setHasBorderInFullScreenDefault(true);
     }
 #endif
 
 
     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);
     }
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
     app.setAttribute(Qt::AA_DisableWindowContextHelpButton);
 #endif
     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;
     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);
 
             }
         }
     }
 #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
     app.setAttribute(Qt::AA_CompressHighFrequencyEvents, false);
 
     // 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::writeSysInfo("\nHardware Information\n");
     KisUsageLogger::writeSysInfo(QString("  GPU Acceleration: %1").arg(kritarc.value("OpenGLRenderer", "auto").toString()));
     KisUsageLogger::writeSysInfo(QString("  Memory: %1 Mb").arg(KisImageConfig(true).totalRAM()));
     KisUsageLogger::writeSysInfo(QString("  Number of Cores: %1").arg(QThread::idealThreadCount()));
     KisUsageLogger::writeSysInfo(QString("  Swap Location: %1\n").arg(KisImageConfig(true).swapDir()));
 
     KisConfig(true).logImportantSettings();
 
     if (!app.start(args)) {
         KisUsageLogger::log("Could not start Krita Application");
         return 1;
     }
 
     int state = app.exec();
 
     {
         QSettings kritarc(configPath + QStringLiteral("/kritadisplayrc"), QSettings::IniFormat);
         kritarc.setValue("canvasState", "OPENGL_SUCCESS");
     }
 
     if (logUsage) {
         KisUsageLogger::close();
     }
 
     return state;
 }
diff --git a/libs/ui/KisDocument.cpp b/libs/ui/KisDocument.cpp
index bbd3a94950..58a382bfc7 100644
--- a/libs/ui/KisDocument.cpp
+++ b/libs/ui/KisDocument.cpp
@@ -1,2044 +1,2089 @@
 /* This file is part of the Krita project
  *
  * Copyright (C) 2014 Boudewijn Rempt <boud@valdyas.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "KisMainWindow.h" // XXX: remove
 #include <QMessageBox> // XXX: remove
 
 #include <KisMimeDatabase.h>
 
 #include <KoCanvasBase.h>
 #include <KoColor.h>
 #include <KoColorProfile.h>
 #include <KoColorSpaceEngine.h>
 #include <KoColorSpace.h>
 #include <KoColorSpaceRegistry.h>
 #include <KoDocumentInfoDlg.h>
 #include <KoDocumentInfo.h>
 #include <KoDpi.h>
 #include <KoUnit.h>
 #include <KoID.h>
 #include <KoOdfReadStore.h>
 #include <KoProgressProxy.h>
 #include <KoProgressUpdater.h>
 #include <KoSelection.h>
 #include <KoShape.h>
 #include <KoShapeController.h>
 #include <KoStore.h>
 #include <KoUpdater.h>
 #include <KoXmlWriter.h>
 #include <KoXmlReader.h>
 #include <KoStoreDevice.h>
 #include <KoDialog.h>
 #include <KisImportExportErrorCode.h>
 #include <KoDocumentResourceManager.h>
 #include <KoMD5Generator.h>
 
 #include <KisUsageLogger.h>
 #include <klocalizedstring.h>
 #include <kis_debug.h>
 #include <kis_generator_layer.h>
 #include <kis_generator_registry.h>
 #include <kdesktopfile.h>
 #include <kconfiggroup.h>
 #include <kbackup.h>
 
 #include <QTextBrowser>
 #include <QApplication>
 #include <QBuffer>
 #include <QStandardPaths>
 #include <QDir>
 #include <QDomDocument>
 #include <QDomElement>
 #include <QFileInfo>
 #include <QImage>
 #include <QList>
 #include <QPainter>
 #include <QRect>
 #include <QScopedPointer>
 #include <QSize>
 #include <QStringList>
 #include <QtGlobal>
 #include <QTimer>
 #include <QWidget>
 #include <QFuture>
 #include <QFutureWatcher>
 
 // Krita Image
 #include <kis_image_animation_interface.h>
 #include <kis_config.h>
 #include <flake/kis_shape_layer.h>
 #include <kis_group_layer.h>
 #include <kis_image.h>
 #include <kis_layer.h>
 #include <kis_name_server.h>
 #include <kis_paint_layer.h>
 #include <kis_painter.h>
 #include <kis_selection.h>
 #include <kis_fill_painter.h>
 #include <kis_document_undo_store.h>
 #include <kis_idle_watcher.h>
 #include <kis_signal_auto_connection.h>
 #include <kis_canvas_widget_base.h>
 #include "kis_layer_utils.h"
 #include "kis_selection_mask.h"
 
 // Local
 #include "KisViewManager.h"
 #include "kis_clipboard.h"
 #include "widgets/kis_custom_image_widget.h"
 #include "canvas/kis_canvas2.h"
 #include "flake/kis_shape_controller.h"
 #include "kis_statusbar.h"
 #include "widgets/kis_progress_widget.h"
 #include "kis_canvas_resource_provider.h"
 #include "KisResourceServerProvider.h"
 #include "kis_node_manager.h"
 #include "KisPart.h"
 #include "KisApplication.h"
 #include "KisDocument.h"
 #include "KisImportExportManager.h"
 #include "KisView.h"
 #include "kis_grid_config.h"
 #include "kis_guides_config.h"
 #include "kis_image_barrier_lock_adapter.h"
 #include "KisReferenceImagesLayer.h"
 
 #include <mutex>
 #include "kis_config_notifier.h"
 #include "kis_async_action_feedback.h"
 #include "KisCloneDocumentStroke.h"
 
 #include <KisMirrorAxisConfig.h>
 
-
 // Define the protocol used here for embedded documents' URL
 // This used to "store" but QUrl didn't like it,
 // so let's simply make it "tar" !
 #define STORE_PROTOCOL "tar"
 // The internal path is a hack to make QUrl happy and for document children
 #define INTERNAL_PROTOCOL "intern"
 #define INTERNAL_PREFIX "intern:/"
 // Warning, keep it sync in koStore.cc
 
 #include <unistd.h>
 
 using namespace std;
 
 namespace {
 constexpr int errorMessageTimeout = 5000;
 constexpr int successMessageTimeout = 1000;
 }
 
 
 /**********************************************************
  *
  * KisDocument
  *
  **********************************************************/
 
 //static
 QString KisDocument::newObjectName()
 {
     static int s_docIFNumber = 0;
     QString name; name.setNum(s_docIFNumber++); name.prepend("document_");
     return name;
 }
 
 
 class UndoStack : public KUndo2Stack
 {
 public:
     UndoStack(KisDocument *doc)
         : KUndo2Stack(doc),
           m_doc(doc)
     {
     }
 
     void setIndex(int idx) override {
         KisImageWSP image = this->image();
         image->requestStrokeCancellation();
         if(image->tryBarrierLock()) {
             KUndo2Stack::setIndex(idx);
             image->unlock();
         }
     }
 
     void notifySetIndexChangedOneCommand() override {
         KisImageWSP image = this->image();
         image->unlock();
 
         /**
          * Some very weird commands may emit blocking signals to
          * the GUI (e.g. KisGuiContextCommand). Here is the best thing
          * we can do to avoid the deadlock
          */
         while(!image->tryBarrierLock()) {
             QApplication::processEvents();
         }
     }
 
     void undo() override {
         KisImageWSP image = this->image();
         image->requestUndoDuringStroke();
 
         if (image->tryUndoUnfinishedLod0Stroke() == UNDO_OK) {
             return;
         }
 
         if(image->tryBarrierLock()) {
             KUndo2Stack::undo();
             image->unlock();
         }
     }
 
     void redo() override {
         KisImageWSP image = this->image();
         if(image->tryBarrierLock()) {
             KUndo2Stack::redo();
             image->unlock();
         }
     }
 
 private:
     KisImageWSP image() {
         KisImageWSP currentImage = m_doc->image();
         Q_ASSERT(currentImage);
         return currentImage;
     }
 
 private:
     KisDocument *m_doc;
 };
 
 class Q_DECL_HIDDEN KisDocument::Private
 {
 public:
     Private(KisDocument *q)
         : docInfo(new KoDocumentInfo(q)) // deleted by QObject
         , importExportManager(new KisImportExportManager(q)) // deleted manually
         , autoSaveTimer(new QTimer(q))
         , undoStack(new UndoStack(q)) // deleted by QObject
         , m_bAutoDetectedMime(false)
         , modified(false)
         , readwrite(true)
         , firstMod(QDateTime::currentDateTime())
         , lastMod(firstMod)
         , nserver(new KisNameServer(1))
         , imageIdleWatcher(2000 /*ms*/)
         , globalAssistantsColor(KisConfig(true).defaultAssistantsColor())
         , savingLock(&savingMutex)
         , batchMode(false)
     {
         if (QLocale().measurementSystem() == QLocale::ImperialSystem) {
             unit = KoUnit::Inch;
         } else {
             unit = KoUnit::Centimeter;
         }
     }
 
     Private(const Private &rhs, KisDocument *q)
         : docInfo(new KoDocumentInfo(*rhs.docInfo, q))
         , unit(rhs.unit)
         , importExportManager(new KisImportExportManager(q))
         , mimeType(rhs.mimeType)
         , outputMimeType(rhs.outputMimeType)
         , autoSaveTimer(new QTimer(q))
         , undoStack(new UndoStack(q))
         , guidesConfig(rhs.guidesConfig)
         , mirrorAxisConfig(rhs.mirrorAxisConfig)
         , m_bAutoDetectedMime(rhs.m_bAutoDetectedMime)
         , m_url(rhs.m_url)
         , m_file(rhs.m_file)
         , modified(rhs.modified)
         , readwrite(rhs.readwrite)
         , firstMod(rhs.firstMod)
         , lastMod(rhs.lastMod)
         , nserver(new KisNameServer(*rhs.nserver))
         , preActivatedNode(0) // the node is from another hierarchy!
         , imageIdleWatcher(2000 /*ms*/)
         , assistants(rhs.assistants) // WARNING: assistants should not store pointers to the document!
         , globalAssistantsColor(rhs.globalAssistantsColor)
         , paletteList(rhs.paletteList)
         , gridConfig(rhs.gridConfig)
         , savingLock(&savingMutex)
         , batchMode(rhs.batchMode)
     {
         // TODO: clone assistants
     }
 
     ~Private() {
         // Don't delete m_d->shapeController because it's in a QObject hierarchy.
         delete nserver;
     }
 
     KoDocumentInfo *docInfo = 0;
 
     KoUnit unit;
 
     KisImportExportManager *importExportManager = 0; // The filter-manager to use when loading/saving [for the options]
 
     QByteArray mimeType; // The actual mimetype of the document
     QByteArray outputMimeType; // The mimetype to use when saving
 
     QTimer *autoSaveTimer;
     QString lastErrorMessage; // see openFile()
     QString lastWarningMessage;
     int autoSaveDelay = 300; // in seconds, 0 to disable.
     bool modifiedAfterAutosave = false;
     bool isAutosaving = false;
     bool disregardAutosaveFailure = false;
     int autoSaveFailureCount = 0;
 
     KUndo2Stack *undoStack = 0;
 
     KisGuidesConfig guidesConfig;
     KisMirrorAxisConfig mirrorAxisConfig;
 
     bool m_bAutoDetectedMime = false; // whether the mimetype in the arguments was detected by the part itself
     QUrl m_url; // local url - the one displayed to the user.
     QString m_file; // Local file - the only one the part implementation should deal with.
 
     QMutex savingMutex;
 
     bool modified = false;
     bool readwrite = false;
 
     QDateTime firstMod;
     QDateTime lastMod;
 
     KisNameServer *nserver;
 
     KisImageSP image;
     KisImageSP savingImage;
 
     KisNodeWSP preActivatedNode;
     KisShapeController* shapeController = 0;
     KoShapeController* koShapeController = 0;
     KisIdleWatcher imageIdleWatcher;
     QScopedPointer<KisSignalAutoConnection> imageIdleConnection;
 
     QList<KisPaintingAssistantSP> assistants;
 
     QColor globalAssistantsColor;
 
     KisSharedPtr<KisReferenceImagesLayer> referenceImagesLayer;
 
     QList<KoColorSet*> paletteList;
 
     KisGridConfig gridConfig;
 
     StdLockableWrapper<QMutex> savingLock;
 
     bool modifiedWhileSaving = false;
     QScopedPointer<KisDocument> backgroundSaveDocument;
     QPointer<KoUpdater> savingUpdater;
     QFuture<KisImportExportErrorCode> childSavingFuture;
     KritaUtils::ExportFileJob backgroundSaveJob;
 
     bool isRecovered = false;
 
     bool batchMode { false };
 
     void setImageAndInitIdleWatcher(KisImageSP _image) {
         image = _image;
 
         imageIdleWatcher.setTrackedImage(image);
 
         if (image) {
             imageIdleConnection.reset(
                         new KisSignalAutoConnection(
                             &imageIdleWatcher, SIGNAL(startedIdleMode()),
                             image.data(), SLOT(explicitRegenerateLevelOfDetail())));
         }
     }
 
     class StrippedSafeSavingLocker;
 };
 
 class KisDocument::Private::StrippedSafeSavingLocker {
 public:
     StrippedSafeSavingLocker(QMutex *savingMutex, KisImageSP image)
         : m_locked(false)
         , m_image(image)
         , m_savingLock(savingMutex)
         , m_imageLock(image, true)
 
     {
         /**
          * Initial try to lock both objects. Locking the image guards
          * us from any image composition threads running in the
          * background, while savingMutex guards us from entering the
          * saving code twice by autosave and main threads.
          *
          * Since we are trying to lock multiple objects, so we should
          * do it in a safe manner.
          */
         m_locked = std::try_lock(m_imageLock, m_savingLock) < 0;
 
         if (!m_locked) {
             m_image->requestStrokeEnd();
             QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 
             // one more try...
             m_locked = std::try_lock(m_imageLock, m_savingLock) < 0;
         }
     }
 
     ~StrippedSafeSavingLocker() {
         if (m_locked) {
             m_imageLock.unlock();
             m_savingLock.unlock();
         }
     }
 
     bool successfullyLocked() const {
         return m_locked;
     }
 
 private:
     bool m_locked;
     KisImageSP m_image;
     StdLockableWrapper<QMutex> m_savingLock;
     KisImageBarrierLockAdapter m_imageLock;
 };
 
 KisDocument::KisDocument()
     : d(new Private(this))
 {
     connect(KisConfigNotifier::instance(), SIGNAL(configChanged()), SLOT(slotConfigChanged()));
     connect(d->undoStack, SIGNAL(cleanChanged(bool)), this, SLOT(slotUndoStackCleanChanged(bool)));
     connect(d->autoSaveTimer, SIGNAL(timeout()), this, SLOT(slotAutoSave()));
     setObjectName(newObjectName());
 
     // preload the krita resources
     KisResourceServerProvider::instance();
 
     d->shapeController = new KisShapeController(this, d->nserver);
     d->koShapeController = new KoShapeController(0, d->shapeController);
     d->shapeController->resourceManager()->setGlobalShapeController(d->koShapeController);
 
     slotConfigChanged();
 }
 
 KisDocument::KisDocument(const KisDocument &rhs)
     : QObject(),
       d(new Private(*rhs.d, this))
 {
     connect(KisConfigNotifier::instance(), SIGNAL(configChanged()), SLOT(slotConfigChanged()));
     connect(d->undoStack, SIGNAL(cleanChanged(bool)), this, SLOT(slotUndoStackCleanChanged(bool)));
     connect(d->autoSaveTimer, SIGNAL(timeout()), this, SLOT(slotAutoSave()));
     setObjectName(rhs.objectName());
 
     d->shapeController = new KisShapeController(this, d->nserver);
     d->koShapeController = new KoShapeController(0, d->shapeController);
     d->shapeController->resourceManager()->setGlobalShapeController(d->koShapeController);
 
     slotConfigChanged();
 
     // clone the image with keeping the GUIDs of the layers intact
     // NOTE: we expect the image to be locked!
     setCurrentImage(rhs.image()->clone(true), false);
 
     if (rhs.d->preActivatedNode) {
         // since we clone uuid's, we can use them for lacating new
         // nodes. Otherwise we would need to use findSymmetricClone()
         d->preActivatedNode =
                 KisLayerUtils::findNodeByUuid(d->image->root(), rhs.d->preActivatedNode->uuid());
     }
 }
 
 KisDocument::~KisDocument()
 {
     // wait until all the pending operations are in progress
     waitForSavingToComplete();
 
     /**
      * Push a timebomb, which will try to release the memory after
      * the document has been deleted
      */
     KisPaintDevice::createMemoryReleaseObject()->deleteLater();
 
     d->autoSaveTimer->disconnect(this);
     d->autoSaveTimer->stop();
 
     delete d->importExportManager;
 
     // Despite being QObject they needs to be deleted before the image
     delete d->shapeController;
 
     delete d->koShapeController;
 
     if (d->image) {
         d->image->notifyAboutToBeDeleted();
 
         /**
          * WARNING: We should wait for all the internal image jobs to
          * finish before entering KisImage's destructor. The problem is,
          * while execution of KisImage::~KisImage, all the weak shared
          * pointers pointing to the image enter an inconsistent
          * state(!). The shared counter is already zero and destruction
          * has started, but the weak reference doesn't know about it,
          * because KisShared::~KisShared hasn't been executed yet. So all
          * the threads running in background and having weak pointers will
          * enter the KisImage's destructor as well.
          */
 
         d->image->requestStrokeCancellation();
         d->image->waitForDone();
 
         // clear undo commands that can still point to the image
         d->undoStack->clear();
         d->image->waitForDone();
 
         KisImageWSP sanityCheckPointer = d->image;
         Q_UNUSED(sanityCheckPointer);
 
         // The following line trigger the deletion of the image
         d->image.clear();
 
         // check if the image has actually been deleted
         KIS_SAFE_ASSERT_RECOVER_NOOP(!sanityCheckPointer.isValid());
     }
 
     delete d;
 }
 
 bool KisDocument::reload()
 {
     // XXX: reimplement!
     return false;
 }
 
 KisDocument *KisDocument::clone()
 {
     return new KisDocument(*this);
 }
 
 bool KisDocument::exportDocumentImpl(const KritaUtils::ExportFileJob &job, KisPropertiesConfigurationSP exportConfiguration)
 {
     QFileInfo filePathInfo(job.filePath);
 
     if (filePathInfo.exists() && !filePathInfo.isWritable()) {
         slotCompleteSavingDocument(job, ImportExportCodes::NoAccessToWrite,
                                    i18n("%1 cannot be written to. Please save under a different name.", job.filePath));
         //return ImportExportCodes::NoAccessToWrite;
         return false;
     }
 
     KisConfig cfg(true);
     if (cfg.backupFile() && filePathInfo.exists()) {
 
         QString backupDir;
 
         switch(cfg.readEntry<int>("backupfilelocation", 0)) {
         case 1:
             backupDir = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
             break;
         case 2:
             backupDir = QStandardPaths::writableLocation(QStandardPaths::TempLocation);
             break;
         default:
             // Do nothing: the empty string is user file location
             break;
         }
 
         int numOfBackupsKept = cfg.readEntry<int>("numberofbackupfiles", 1);
         QString suffix = cfg.readEntry<QString>("backupfilesuffix", "~");
 
         if (numOfBackupsKept == 1) {
             if (!KBackup::simpleBackupFile(job.filePath, backupDir, suffix)) {
                 qWarning() << "Failed to create simple backup file!" << job.filePath << backupDir << suffix;
                 KisUsageLogger::log(QString("Failed to create a simple backup for %1 in %2.").arg(job.filePath).arg(backupDir.isEmpty() ? "the same location as the file" : backupDir));
                 return false;
             }
             else {
                 KisUsageLogger::log(QString("Create a simple backup for %1 in %2.").arg(job.filePath).arg(backupDir.isEmpty() ? "the same location as the file" : backupDir));
             }
         }
         else if (numOfBackupsKept > 1) {
             if (!KBackup::numberedBackupFile(job.filePath, backupDir, suffix, numOfBackupsKept)) {
                 qWarning() << "Failed to create numbered backup file!" << job.filePath << backupDir << suffix;
                 KisUsageLogger::log(QString("Failed to create a numbered backup for %2.").arg(job.filePath).arg(backupDir.isEmpty() ? "the same location as the file" : backupDir));
                 return false;
             }
             else {
                 KisUsageLogger::log(QString("Create a simple backup for %1 in %2.").arg(job.filePath).arg(backupDir.isEmpty() ? "the same location as the file" : backupDir));
             }
         }
     }
 
     //KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(!job.mimeType.isEmpty(), false);
     if (job.mimeType.isEmpty()) {
 
         KisImportExportErrorCode error = ImportExportCodes::FileFormatIncorrect;
         slotCompleteSavingDocument(job, error, error.errorMessage());
         return false;
 
     }
 
     const QString actionName =
             job.flags & KritaUtils::SaveIsExporting ?
                 i18n("Exporting Document...") :
                 i18n("Saving Document...");
 
     bool started =
             initiateSavingInBackground(actionName,
                                        this, SLOT(slotCompleteSavingDocument(KritaUtils::ExportFileJob, KisImportExportErrorCode ,QString)),
                                        job, exportConfiguration);
     if (!started) {
         emit canceled(QString());
     }
 
     return started;
 }
 
 bool KisDocument::exportDocument(const QUrl &url, const QByteArray &mimeType, bool showWarnings, KisPropertiesConfigurationSP exportConfiguration)
 {
     using namespace KritaUtils;
 
     SaveFlags flags = SaveIsExporting;
     if (showWarnings) {
         flags |= SaveShowWarnings;
     }
 
     KisUsageLogger::log(QString("Exporting Document: %1 as %2. %3 * %4 pixels, %5 layers, %6 frames, %7 framerate. Export configuration: %8")
                         .arg(url.toLocalFile())
                         .arg(QString::fromLatin1(mimeType))
                         .arg(d->image->width())
                         .arg(d->image->height())
                         .arg(d->image->nlayers())
                         .arg(d->image->animationInterface()->totalLength())
                         .arg(d->image->animationInterface()->framerate())
                         .arg(exportConfiguration ? exportConfiguration->toXML() : "No configuration"));
 
     return exportDocumentImpl(KritaUtils::ExportFileJob(url.toLocalFile(),
                                                         mimeType,
                                                         flags),
                               exportConfiguration);
 
 }
 
 bool KisDocument::saveAs(const QUrl &_url, const QByteArray &mimeType, bool showWarnings, KisPropertiesConfigurationSP exportConfiguration)
 {
     using namespace KritaUtils;
 
     KisUsageLogger::log(QString("Saving Document %9 as %1 (mime: %2). %3 * %4 pixels, %5 layers.  %6 frames, %7 framerate. Export configuration: %8")
                         .arg(_url.toLocalFile())
                         .arg(QString::fromLatin1(mimeType))
                         .arg(d->image->width())
                         .arg(d->image->height())
                         .arg(d->image->nlayers())
                         .arg(d->image->animationInterface()->totalLength())
                         .arg(d->image->animationInterface()->framerate())
                         .arg(exportConfiguration ? exportConfiguration->toXML() : "No configuration")
                         .arg(url().toLocalFile()));
 
 
     return exportDocumentImpl(ExportFileJob(_url.toLocalFile(),
                                             mimeType,
                                             showWarnings ? SaveShowWarnings : SaveNone),
                               exportConfiguration);
 }
 
 bool KisDocument::save(bool showWarnings, KisPropertiesConfigurationSP exportConfiguration)
 {
     return saveAs(url(), mimeType(), showWarnings, exportConfiguration);
 }
 
 QByteArray KisDocument::serializeToNativeByteArray()
 {
     QByteArray byteArray;
     QBuffer buffer(&byteArray);
 
     QScopedPointer<KisImportExportFilter> filter(KisImportExportManager::filterForMimeType(nativeFormatMimeType(), KisImportExportManager::Export));
     filter->setBatchMode(true);
     filter->setMimeType(nativeFormatMimeType());
 
     Private::StrippedSafeSavingLocker locker(&d->savingMutex, d->image);
     if (!locker.successfullyLocked()) {
         return byteArray;
     }
 
     d->savingImage = d->image;
 
     if (!filter->convert(this, &buffer).isOk()) {
         qWarning() << "serializeToByteArray():: Could not export to our native format";
     }
 
     return byteArray;
 }
 
 void KisDocument::slotCompleteSavingDocument(const KritaUtils::ExportFileJob &job, KisImportExportErrorCode status, const QString &errorMessage)
 {
     if (status.isCancelled())
         return;
 
     const QString fileName = QFileInfo(job.filePath).fileName();
 
     if (!status.isOk()) {
         emit statusBarMessage(i18nc("%1 --- failing file name, %2 --- error message",
                                     "Error during saving %1: %2",
                                     fileName,
                                     exportErrorToUserMessage(status, errorMessage)), errorMessageTimeout);
 
         if (!fileBatchMode()) {
             const QString filePath = job.filePath;
             QMessageBox::critical(0, i18nc("@title:window", "Krita"), i18n("Could not save %1\nReason: %2", filePath, exportErrorToUserMessage(status, errorMessage)));
         }
     } else {
         if (!(job.flags & KritaUtils::SaveIsExporting)) {
             const QString existingAutoSaveBaseName = localFilePath();
             const bool wasRecovered = isRecovered();
 
             setUrl(QUrl::fromLocalFile(job.filePath));
             setLocalFilePath(job.filePath);
             setMimeType(job.mimeType);
             updateEditingTime(true);
 
             if (!d->modifiedWhileSaving) {
                 /**
                  * If undo stack is already clean/empty, it doesn't emit any
                  * signals, so we might forget update document modified state
                  * (which was set, e.g. while recovering an autosave file)
                  */
 
                 if (d->undoStack->isClean()) {
                     setModified(false);
                 } else {
                     d->undoStack->setClean();
                 }
             }
             setRecovered(false);
             removeAutoSaveFiles(existingAutoSaveBaseName, wasRecovered);
         }
 
         emit completed();
         emit sigSavingFinished();
 
         emit statusBarMessage(i18n("Finished saving %1", fileName), successMessageTimeout);
     }
 }
 
 QByteArray KisDocument::mimeType() const
 {
     return d->mimeType;
 }
 
 void KisDocument::setMimeType(const QByteArray & mimeType)
 {
     d->mimeType = mimeType;
 }
 
 bool KisDocument::fileBatchMode() const
 {
     return d->batchMode;
 }
 
 void KisDocument::setFileBatchMode(const bool batchMode)
 {
     d->batchMode = batchMode;
 }
 
 KisDocument* KisDocument::lockAndCloneForSaving()
 {
     // force update of all the asynchronous nodes before cloning
     QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
     KisLayerUtils::forceAllDelayedNodesUpdate(d->image->root());
 
     KisMainWindow *window = KisPart::instance()->currentMainwindow();
     if (window) {
         if (window->viewManager()) {
             if (!window->viewManager()->blockUntilOperationsFinished(d->image)) {
                 return 0;
             }
         }
     }
 
     Private::StrippedSafeSavingLocker locker(&d->savingMutex, d->image);
     if (!locker.successfullyLocked()) {
         return 0;
     }
 
     return new KisDocument(*this);
 }
 
 bool KisDocument::exportDocumentSync(const QUrl &url, const QByteArray &mimeType, KisPropertiesConfigurationSP exportConfiguration)
 {
     {
 
         /**
          * The caller guarantees that noone else uses the document (usually,
          * it is a temporary docuent created specifically for exporting), so
          * we don't need to copy or lock the document. Instead we should just
          * ensure the barrier lock is synced and then released.
          */
         Private::StrippedSafeSavingLocker locker(&d->savingMutex, d->image);
         if (!locker.successfullyLocked()) {
             return false;
         }
     }
 
     d->savingImage = d->image;
 
     const QString fileName = url.toLocalFile();
 
     KisImportExportErrorCode status =
             d->importExportManager->
             exportDocument(fileName, fileName, mimeType, false, exportConfiguration);
 
     d->savingImage = 0;
 
     return status.isOk();
 }
 
 bool KisDocument::initiateSavingInBackground(const QString actionName,
                                              const QObject *receiverObject, const char *receiverMethod,
                                              const KritaUtils::ExportFileJob &job,
                                              KisPropertiesConfigurationSP exportConfiguration)
 {
     return initiateSavingInBackground(actionName, receiverObject, receiverMethod,
                                       job, exportConfiguration, std::unique_ptr<KisDocument>());
 }
 
 bool KisDocument::initiateSavingInBackground(const QString actionName,
                                              const QObject *receiverObject, const char *receiverMethod,
                                              const KritaUtils::ExportFileJob &job,
                                              KisPropertiesConfigurationSP exportConfiguration,
                                              std::unique_ptr<KisDocument> &&optionalClonedDocument)
 {
     KIS_ASSERT_RECOVER_RETURN_VALUE(job.isValid(), false);
 
     QScopedPointer<KisDocument> clonedDocument;
 
     if (!optionalClonedDocument) {
         clonedDocument.reset(lockAndCloneForSaving());
     } else {
         clonedDocument.reset(optionalClonedDocument.release());
     }
 
     // we block saving until the current saving is finished!
     if (!clonedDocument || !d->savingMutex.tryLock()) {
         return false;
     }
 
     auto waitForImage = [] (KisImageSP image) {
         KisMainWindow *window = KisPart::instance()->currentMainwindow();
         if (window) {
             if (window->viewManager()) {
                 window->viewManager()->blockUntilOperationsFinishedForced(image);
             }
         }
     };
 
     {
         KisNodeSP newRoot = clonedDocument->image()->root();
         KIS_SAFE_ASSERT_RECOVER(!KisLayerUtils::hasDelayedNodeWithUpdates(newRoot)) {
             KisLayerUtils::forceAllDelayedNodesUpdate(newRoot);
             waitForImage(clonedDocument->image());
         }
     }
 
     if (clonedDocument->image()->hasOverlaySelectionMask()) {
         clonedDocument->image()->setOverlaySelectionMask(0);
         waitForImage(clonedDocument->image());
     }
 
     KIS_SAFE_ASSERT_RECOVER(clonedDocument->image()->isIdle()) {
         waitForImage(clonedDocument->image());
     }
 
     KIS_ASSERT_RECOVER_RETURN_VALUE(!d->backgroundSaveDocument, false);
     KIS_ASSERT_RECOVER_RETURN_VALUE(!d->backgroundSaveJob.isValid(), false);
     d->backgroundSaveDocument.reset(clonedDocument.take());
     d->backgroundSaveJob = job;
     d->modifiedWhileSaving = false;
 
     if (d->backgroundSaveJob.flags & KritaUtils::SaveInAutosaveMode) {
         d->backgroundSaveDocument->d->isAutosaving = true;
     }
 
     connect(d->backgroundSaveDocument.data(),
             SIGNAL(sigBackgroundSavingFinished(KisImportExportErrorCode, QString)),
             this,
             SLOT(slotChildCompletedSavingInBackground(KisImportExportErrorCode, QString)));
 
 
     connect(this, SIGNAL(sigCompleteBackgroundSaving(KritaUtils::ExportFileJob, KisImportExportErrorCode, QString)),
             receiverObject, receiverMethod, Qt::UniqueConnection);
 
     bool started =
             d->backgroundSaveDocument->startExportInBackground(actionName,
                                                                job.filePath,
                                                                job.filePath,
                                                                job.mimeType,
                                                                job.flags & KritaUtils::SaveShowWarnings,
                                                                exportConfiguration);
 
     if (!started) {
         // the state should have been deinitialized in slotChildCompletedSavingInBackground()
 
         KIS_SAFE_ASSERT_RECOVER (!d->backgroundSaveDocument && !d->backgroundSaveJob.isValid()) {
             d->backgroundSaveDocument.take()->deleteLater();
             d->savingMutex.unlock();
             d->backgroundSaveJob = KritaUtils::ExportFileJob();
         }
     }
 
     return started;
 }
 
 
 void KisDocument::slotChildCompletedSavingInBackground(KisImportExportErrorCode status, const QString &errorMessage)
 {
     KIS_ASSERT_RECOVER_RETURN(isSaving());
 
     KIS_ASSERT_RECOVER(d->backgroundSaveDocument) {
         d->savingMutex.unlock();
         return;
     }
 
     if (d->backgroundSaveJob.flags & KritaUtils::SaveInAutosaveMode) {
         d->backgroundSaveDocument->d->isAutosaving = false;
     }
 
     d->backgroundSaveDocument.take()->deleteLater();
 
     KIS_ASSERT_RECOVER(d->backgroundSaveJob.isValid()) {
         d->savingMutex.unlock();
         return;
     }
 
     const KritaUtils::ExportFileJob job = d->backgroundSaveJob;
     d->backgroundSaveJob = KritaUtils::ExportFileJob();
 
     // unlock at the very end
     d->savingMutex.unlock();
 
 
     QFileInfo fi(job.filePath);
     KisUsageLogger::log(QString("Completed saving %1 (mime: %2). Result: %3. Size: %4. MD5 Hash: %5")
                         .arg(job.filePath)
                         .arg(QString::fromLatin1(job.mimeType))
                         .arg(!status.isOk() ? exportErrorToUserMessage(status, errorMessage) : "OK")
                         .arg(fi.size())
                         .arg(QString::fromLatin1(KoMD5Generator().generateHash(job.filePath).toHex())));
 
     emit sigCompleteBackgroundSaving(job, status, errorMessage);
 }
 
 void KisDocument::slotAutoSaveImpl(std::unique_ptr<KisDocument> &&optionalClonedDocument)
 {
     if (!d->modified || !d->modifiedAfterAutosave) return;
     const QString autoSaveFileName = generateAutoSaveFileName(localFilePath());
 
     emit statusBarMessage(i18n("Autosaving... %1", autoSaveFileName), successMessageTimeout);
 
     KisUsageLogger::log(QString("Autosaving: %1").arg(autoSaveFileName));
 
     const bool hadClonedDocument = bool(optionalClonedDocument);
     bool started = false;
 
     if (d->image->isIdle() || hadClonedDocument) {
         started = initiateSavingInBackground(i18n("Autosaving..."),
                                              this, SLOT(slotCompleteAutoSaving(KritaUtils::ExportFileJob, KisImportExportErrorCode, QString)),
                                              KritaUtils::ExportFileJob(autoSaveFileName, nativeFormatMimeType(), KritaUtils::SaveIsExporting | KritaUtils::SaveInAutosaveMode),
                                              0,
                                              std::move(optionalClonedDocument));
     } else {
         emit statusBarMessage(i18n("Autosaving postponed: document is busy..."), errorMessageTimeout);
     }
 
     if (!started && !hadClonedDocument && d->autoSaveFailureCount >= 3) {
         KisCloneDocumentStroke *stroke = new KisCloneDocumentStroke(this);
         connect(stroke, SIGNAL(sigDocumentCloned(KisDocument*)),
                 this, SLOT(slotInitiateAsyncAutosaving(KisDocument*)),
                 Qt::BlockingQueuedConnection);
 
         KisStrokeId strokeId = d->image->startStroke(stroke);
         d->image->endStroke(strokeId);
 
         setInfiniteAutoSaveInterval();
 
     } else if (!started) {
         setEmergencyAutoSaveInterval();
     } else {
         d->modifiedAfterAutosave = false;
     }
 }
 
 void KisDocument::slotAutoSave()
 {
     slotAutoSaveImpl(std::unique_ptr<KisDocument>());
 }
 
 void KisDocument::slotInitiateAsyncAutosaving(KisDocument *clonedDocument)
 {
     slotAutoSaveImpl(std::unique_ptr<KisDocument>(clonedDocument));
 }
 
 void KisDocument::slotCompleteAutoSaving(const KritaUtils::ExportFileJob &job, KisImportExportErrorCode status, const QString &errorMessage)
 {
     Q_UNUSED(job);
 
     const QString fileName = QFileInfo(job.filePath).fileName();
 
     if (!status.isOk()) {
         setEmergencyAutoSaveInterval();
         emit statusBarMessage(i18nc("%1 --- failing file name, %2 --- error message",
                                     "Error during autosaving %1: %2",
                                     fileName,
                                     exportErrorToUserMessage(status, errorMessage)), errorMessageTimeout);
     } else {
         KisConfig cfg(true);
         d->autoSaveDelay = cfg.autoSaveInterval();
 
         if (!d->modifiedWhileSaving) {
             d->autoSaveTimer->stop(); // until the next change
             d->autoSaveFailureCount = 0;
         } else {
             setNormalAutoSaveInterval();
         }
 
         emit statusBarMessage(i18n("Finished autosaving %1", fileName), successMessageTimeout);
     }
 }
 
 bool KisDocument::startExportInBackground(const QString &actionName,
                                           const QString &location,
                                           const QString &realLocation,
                                           const QByteArray &mimeType,
                                           bool showWarnings,
                                           KisPropertiesConfigurationSP exportConfiguration)
 {
     d->savingImage = d->image;
 
     KisMainWindow *window = KisPart::instance()->currentMainwindow();
     if (window) {
         if (window->viewManager()) {
             d->savingUpdater = window->viewManager()->createThreadedUpdater(actionName);
             d->importExportManager->setUpdater(d->savingUpdater);
         }
     }
 
     KisImportExportErrorCode initializationStatus(ImportExportCodes::OK);
     d->childSavingFuture =
             d->importExportManager->exportDocumentAsyc(location,
                                                        realLocation,
                                                        mimeType,
                                                        initializationStatus,
                                                        showWarnings,
                                                        exportConfiguration);
 
     if (!initializationStatus.isOk()) {
         if (d->savingUpdater) {
             d->savingUpdater->cancel();
         }
         d->savingImage.clear();
         emit sigBackgroundSavingFinished(initializationStatus, initializationStatus.errorMessage());
         return false;
     }
 
     typedef QFutureWatcher<KisImportExportErrorCode> StatusWatcher;
     StatusWatcher *watcher = new StatusWatcher();
     watcher->setFuture(d->childSavingFuture);
 
     connect(watcher, SIGNAL(finished()), SLOT(finishExportInBackground()));
     connect(watcher, SIGNAL(finished()), watcher, SLOT(deleteLater()));
 
     return true;
 }
 
 void KisDocument::finishExportInBackground()
 {
     KIS_SAFE_ASSERT_RECOVER(d->childSavingFuture.isFinished()) {
         emit sigBackgroundSavingFinished(ImportExportCodes::InternalError, "");
         return;
     }
 
    KisImportExportErrorCode status =
             d->childSavingFuture.result();
     const QString errorMessage = status.errorMessage();
 
     d->savingImage.clear();
     d->childSavingFuture = QFuture<KisImportExportErrorCode>();
     d->lastErrorMessage.clear();
 
     if (d->savingUpdater) {
         d->savingUpdater->setProgress(100);
     }
 
     emit sigBackgroundSavingFinished(status, errorMessage);
 }
 
 void KisDocument::setReadWrite(bool readwrite)
 {
     d->readwrite = readwrite;
     setNormalAutoSaveInterval();
 
     Q_FOREACH (KisMainWindow *mainWindow, KisPart::instance()->mainWindows()) {
         mainWindow->setReadWrite(readwrite);
     }
 }
 
 void KisDocument::setAutoSaveDelay(int delay)
 {
     if (isReadWrite() && delay > 0) {
         d->autoSaveTimer->start(delay * 1000);
     } else {
         d->autoSaveTimer->stop();
     }
 }
 
 void KisDocument::setNormalAutoSaveInterval()
 {
     setAutoSaveDelay(d->autoSaveDelay);
     d->autoSaveFailureCount = 0;
 }
 
 void KisDocument::setEmergencyAutoSaveInterval()
 {
     const int emergencyAutoSaveInterval = 10; /* sec */
     setAutoSaveDelay(emergencyAutoSaveInterval);
     d->autoSaveFailureCount++;
 }
 
 void KisDocument::setInfiniteAutoSaveInterval()
 {
     setAutoSaveDelay(-1);
 }
 
 KoDocumentInfo *KisDocument::documentInfo() const
 {
     return d->docInfo;
 }
 
 bool KisDocument::isModified() const
 {
     return d->modified;
 }
 
 QPixmap KisDocument::generatePreview(const QSize& size)
 {
     KisImageSP image = d->image;
     if (d->savingImage) image = d->savingImage;
 
     if (image) {
         QRect bounds = image->bounds();
         QSize newSize = bounds.size();
         newSize.scale(size, Qt::KeepAspectRatio);
         QPixmap px = QPixmap::fromImage(image->convertToQImage(newSize, 0));
         if (px.size() == QSize(0,0)) {
             px = QPixmap(newSize);
             QPainter gc(&px);
             QBrush checkBrush = QBrush(KisCanvasWidgetBase::createCheckersImage(newSize.width() / 5));
             gc.fillRect(px.rect(), checkBrush);
             gc.end();
         }
         return px;
     }
     return QPixmap(size);
 }
 
 QString KisDocument::generateAutoSaveFileName(const QString & path) const
 {
     QString retval;
 
     // Using the extension allows to avoid relying on the mime magic when opening
     const QString extension (".kra");
     QString prefix = KisConfig(true).readEntry<bool>("autosavefileshidden") ? QString(".") : QString();
     QRegularExpression autosavePattern1("^\\..+-autosave.kra$");
     QRegularExpression autosavePattern2("^.+-autosave.kra$");
 
     QFileInfo fi(path);
     QString dir = fi.absolutePath();
     QString filename = fi.fileName();
 
     if (path.isEmpty() || autosavePattern1.match(filename).hasMatch() || autosavePattern2.match(filename).hasMatch() || !fi.isWritable()) {
         // Never saved?
 #ifdef Q_OS_WIN
         // On Windows, use the temp location (https://bugs.kde.org/show_bug.cgi?id=314921)
         retval = QString("%1%2%7%3-%4-%5-autosave%6").arg(QDir::tempPath()).arg(QDir::separator()).arg("krita").arg(qApp->applicationPid()).arg(objectName()).arg(extension).arg(prefix);
 #else
         // On Linux, use a temp file in $HOME then. Mark it with the pid so two instances don't overwrite each other's autosave file
         retval = QString("%1%2%7%3-%4-%5-autosave%6").arg(QDir::homePath()).arg(QDir::separator()).arg("krita").arg(qApp->applicationPid()).arg(objectName()).arg(extension).arg(prefix);
 #endif
     } else {
         retval = QString("%1%2%5%3-autosave%4").arg(dir).arg(QDir::separator()).arg(filename).arg(extension).arg(prefix);
     }
 
     //qDebug() << "generateAutoSaveFileName() for path" << path << ":" << retval;
     return retval;
 }
 
 bool KisDocument::importDocument(const QUrl &_url)
 {
     bool ret;
 
     dbgUI << "url=" << _url.url();
 
     // open...
     ret = openUrl(_url);
 
     // reset url & m_file (kindly? set by KisParts::openUrl()) to simulate a
     // File --> Import
     if (ret) {
         dbgUI << "success, resetting url";
         resetURL();
         setTitleModified();
     }
 
     return ret;
 }
 
 
 bool KisDocument::openUrl(const QUrl &_url, OpenFlags flags)
 {
     if (!_url.isLocalFile()) {
         return false;
     }
     dbgUI << "url=" << _url.url();
     d->lastErrorMessage.clear();
 
     // Reimplemented, to add a check for autosave files and to improve error reporting
     if (!_url.isValid()) {
         d->lastErrorMessage = i18n("Malformed URL\n%1", _url.url());  // ## used anywhere ?
         return false;
     }
 
     QUrl url(_url);
     bool autosaveOpened = false;
     if (url.isLocalFile() && !fileBatchMode()) {
         QString file = url.toLocalFile();
         QString asf = generateAutoSaveFileName(file);
         if (QFile::exists(asf)) {
             KisApplication *kisApp = static_cast<KisApplication*>(qApp);
             kisApp->hideSplashScreen();
             //qDebug() <<"asf=" << asf;
             // ## TODO compare timestamps ?
             int res = QMessageBox::warning(0,
                                            i18nc("@title:window", "Krita"),
                                            i18n("An autosaved file exists for this document.\nDo you want to open the autosaved file instead?"),
                                            QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel, QMessageBox::Yes);
             switch (res) {
             case QMessageBox::Yes :
                 url.setPath(asf);
                 autosaveOpened = true;
                 break;
             case QMessageBox::No :
                 KisUsageLogger::log(QString("Removing autosave file: %1").arg(asf));
                 QFile::remove(asf);
                 break;
             default: // Cancel
                 return false;
             }
         }
     }
 
     bool ret = openUrlInternal(url);
 
     if (autosaveOpened || flags & RecoveryFile) {
         setReadWrite(true); // enable save button
         setModified(true);
         setRecovered(true);
     }
     else {
         if (ret) {
 
             if (!(flags & DontAddToRecent)) {
                 KisPart::instance()->addRecentURLToAllMainWindows(_url);
             }
 
             // Detect readonly local-files; remote files are assumed to be writable
             QFileInfo fi(url.toLocalFile());
             setReadWrite(fi.isWritable());
         }
 
         setRecovered(false);
     }
 
     return ret;
 }
 
 class DlgLoadMessages : public KoDialog {
 public:
     DlgLoadMessages(const QString &title, const QString &message, const QStringList &warnings) {
         setWindowTitle(title);
         setWindowIcon(KisIconUtils::loadIcon("warning"));
         QWidget *page = new QWidget(this);
         QVBoxLayout *layout = new QVBoxLayout(page);
         QHBoxLayout *hlayout = new QHBoxLayout();
         QLabel *labelWarning= new QLabel();
         labelWarning->setPixmap(KisIconUtils::loadIcon("warning").pixmap(32, 32));
         hlayout->addWidget(labelWarning);
         hlayout->addWidget(new QLabel(message));
         layout->addLayout(hlayout);
         QTextBrowser *browser = new QTextBrowser();
         QString warning = "<html><body><p><b>";
         if (warnings.size() == 1) {
             warning += "</b> Reason:</p>";
         }
         else {
             warning += "</b> Reasons:</p>";
         }
         warning += "<p/><ul>";
 
         Q_FOREACH(const QString &w, warnings) {
             warning += "\n<li>" + w + "</li>";
         }
         warning += "</ul>";
         browser->setHtml(warning);
         browser->setMinimumHeight(200);
         browser->setMinimumWidth(400);
         layout->addWidget(browser);
         setMainWidget(page);
         setButtons(KoDialog::Ok);
         resize(minimumSize());
     }
 };
 
 bool KisDocument::openFile()
 {
     //dbgUI <<"for" << localFilePath();
     if (!QFile::exists(localFilePath()) && !fileBatchMode()) {
         QMessageBox::critical(0, i18nc("@title:window", "Krita"), i18n("File %1 does not exist.", localFilePath()));
         return false;
     }
 
     QString filename = localFilePath();
     QString typeName = mimeType();
 
     if (typeName.isEmpty()) {
         typeName = KisMimeDatabase::mimeTypeForFile(filename);
     }
 
     //qDebug() << "mimetypes 4:" << typeName;
 
     // Allow to open backup files, don't keep the mimetype application/x-trash.
     if (typeName == "application/x-trash") {
         QString path = filename;
         while (path.length() > 0) {
             path.chop(1);
             typeName = KisMimeDatabase::mimeTypeForFile(path);
             //qDebug() << "\t" << path << typeName;
             if (!typeName.isEmpty()) {
                 break;
             }
         }
         //qDebug() << "chopped" << filename  << "to" << path << "Was trash, is" << typeName;
     }
     dbgUI << localFilePath() << "type:" << typeName;
 
     KisMainWindow *window = KisPart::instance()->currentMainwindow();
     KoUpdaterPtr updater;
     if (window && window->viewManager()) {
         updater = window->viewManager()->createUnthreadedUpdater(i18n("Opening document"));
         d->importExportManager->setUpdater(updater);
     }
 
     KisImportExportErrorCode status = d->importExportManager->importDocument(localFilePath(), typeName);
 
     if (!status.isOk()) {
         if (window && window->viewManager()) {
             updater->cancel();
         }
         QString msg = status.errorMessage();
         if (!msg.isEmpty() && !fileBatchMode()) {
             DlgLoadMessages dlg(i18nc("@title:window", "Krita"),
                                 i18n("Could not open %2.\nReason: %1.", msg, prettyPathOrUrl()),
                                 errorMessage().split("\n") + warningMessage().split("\n"));
             dlg.exec();
         }
         return false;
     }
     else if (!warningMessage().isEmpty() && !fileBatchMode()) {
         DlgLoadMessages dlg(i18nc("@title:window", "Krita"),
                             i18n("There were problems opening %1.", prettyPathOrUrl()),
                             warningMessage().split("\n"));
         dlg.exec();
         setUrl(QUrl());
     }
 
     setMimeTypeAfterLoading(typeName);
     emit sigLoadingFinished();
 
     undoStack()->clear();
 
     return true;
 }
 
+void KisDocument::autoSaveOnPause()
+{
+    if (!d->modified || !d->modifiedAfterAutosave) return;
+    const QString autoSaveFileName = generateAutoSaveFileName(localFilePath());
+
+    bool started = initiateSavingSynchronously(
+                KritaUtils::ExportFileJob(
+                   autoSaveFileName, nativeFormatMimeType(),
+                   KritaUtils::SaveIsExporting | KritaUtils::SaveInAutosaveMode));
+
+    // FIXME?: when the document is pushed to background while it is being
+    // drawn on, it doesn't get saved. One possible solution could be to block
+    // and emit signal when it finishes.
+    if (started)
+    {
+        d->modifiedAfterAutosave = false;
+    }
+    else
+    {
+        qDebug() << "Could not auto-save when paused";
+    }
+}
+
+bool KisDocument::initiateSavingSynchronously(const KritaUtils::ExportFileJob& job)
+{
+    KIS_ASSERT_RECOVER_RETURN_VALUE(job.isValid(), false)
+
+    QUrl url("file:/" + job.filePath);
+    bool started = exportDocumentSync(url, job.mimeType);
+
+    if (!started)
+    {
+        d->savingMutex.unlock();
+
+        // KisCloneDocumentStroke *stroke = new KisCloneDocumentStroke(this);
+        // KisStrokeId strokeId = d->image->startStroke(stroke);
+        // d->image->endStroke(strokeId);
+        // d->image->unlock();
+
+        // try again
+        started = exportDocumentSync(url, job.mimeType);
+    }
+
+    return started;
+}
+
 // shared between openFile and koMainWindow's "create new empty document" code
 void KisDocument::setMimeTypeAfterLoading(const QString& mimeType)
 {
     d->mimeType = mimeType.toLatin1();
     d->outputMimeType = d->mimeType;
 }
 
 
 bool KisDocument::loadNativeFormat(const QString & file_)
 {
     return openUrl(QUrl::fromLocalFile(file_));
 }
 
 void KisDocument::setModified(bool mod)
 {
     if (mod) {
         updateEditingTime(false);
     }
 
     if (d->isAutosaving)   // ignore setModified calls due to autosaving
         return;
 
     if ( !d->readwrite && d->modified ) {
         errKrita << "Can't set a read-only document to 'modified' !" << endl;
         return;
     }
 
     //dbgUI<<" url:" << url.path();
     //dbgUI<<" mod="<<mod<<" MParts mod="<<KisParts::ReadWritePart::isModified()<<" isModified="<<isModified();
 
     if (mod && !d->autoSaveTimer->isActive()) {
         // First change since last autosave -> start the autosave timer
         setNormalAutoSaveInterval();
     }
     d->modifiedAfterAutosave = mod;
     d->modifiedWhileSaving = mod;
 
     if (mod == isModified())
         return;
 
     d->modified = mod;
 
     if (mod) {
         documentInfo()->updateParameters();
     }
 
     // This influences the title
     setTitleModified();
     emit modified(mod);
 }
 
 void KisDocument::setRecovered(bool value)
 {
     d->isRecovered = value;
 }
 
 bool KisDocument::isRecovered() const
 {
     return d->isRecovered;
 }
 
 void KisDocument::updateEditingTime(bool forceStoreElapsed)
 {
     QDateTime now = QDateTime::currentDateTime();
     int firstModDelta = d->firstMod.secsTo(now);
     int lastModDelta = d->lastMod.secsTo(now);
 
     if (lastModDelta > 30) {
         d->docInfo->setAboutInfo("editing-time", QString::number(d->docInfo->aboutInfo("editing-time").toInt() + d->firstMod.secsTo(d->lastMod)));
         d->firstMod = now;
     } else if (firstModDelta > 60 || forceStoreElapsed) {
         d->docInfo->setAboutInfo("editing-time", QString::number(d->docInfo->aboutInfo("editing-time").toInt() + firstModDelta));
         d->firstMod = now;
     }
 
     d->lastMod = now;
 }
 
 QString KisDocument::prettyPathOrUrl() const
 {
     QString _url(url().toDisplayString());
 #ifdef Q_OS_WIN
     if (url().isLocalFile()) {
         _url = QDir::toNativeSeparators(_url);
     }
 #endif
     return _url;
 }
 
 // Get caption from document info (title(), in about page)
 QString KisDocument::caption() const
 {
     QString c;
     const QString _url(url().fileName());
 
     // if URL is empty...it is probably an unsaved file
     if (_url.isEmpty()) {
         c = " [" + i18n("Not Saved") + "] ";
     } else {
         c = _url; // Fall back to document URL
     }
 
     return c;
 }
 
 void KisDocument::setTitleModified()
 {
     emit titleModified(caption(), isModified());
 }
 
 QDomDocument KisDocument::createDomDocument(const QString& tagName, const QString& version) const
 {
     return createDomDocument("krita", tagName, version);
 }
 
 //static
 QDomDocument KisDocument::createDomDocument(const QString& appName, const QString& tagName, const QString& version)
 {
     QDomImplementation impl;
     QString url = QString("http://www.calligra.org/DTD/%1-%2.dtd").arg(appName).arg(version);
     QDomDocumentType dtype = impl.createDocumentType(tagName,
                                                      QString("-//KDE//DTD %1 %2//EN").arg(appName).arg(version),
                                                      url);
     // The namespace URN doesn't need to include the version number.
     QString namespaceURN = QString("http://www.calligra.org/DTD/%1").arg(appName);
     QDomDocument doc = impl.createDocument(namespaceURN, tagName, dtype);
     doc.insertBefore(doc.createProcessingInstruction("xml", "version=\"1.0\" encoding=\"UTF-8\""), doc.documentElement());
     return doc;
 }
 
 bool KisDocument::isNativeFormat(const QByteArray& mimetype) const
 {
     if (mimetype == nativeFormatMimeType())
         return true;
     return extraNativeMimeTypes().contains(mimetype);
 }
 
 void KisDocument::setErrorMessage(const QString& errMsg)
 {
     d->lastErrorMessage = errMsg;
 }
 
 QString KisDocument::errorMessage() const
 {
     return d->lastErrorMessage;
 }
 
 void KisDocument::setWarningMessage(const QString& warningMsg)
 {
     d->lastWarningMessage = warningMsg;
 }
 
 QString KisDocument::warningMessage() const
 {
     return d->lastWarningMessage;
 }
 
 
 void KisDocument::removeAutoSaveFiles(const QString &autosaveBaseName, bool wasRecovered)
 {
     // Eliminate any auto-save file
     QString asf = generateAutoSaveFileName(autosaveBaseName);   // the one in the current dir
     if (QFile::exists(asf)) {
         KisUsageLogger::log(QString("Removing autosave file: %1").arg(asf));
         QFile::remove(asf);
     }
     asf = generateAutoSaveFileName(QString());   // and the one in $HOME
 
     if (QFile::exists(asf)) {
         KisUsageLogger::log(QString("Removing autosave file: %1").arg(asf));
         QFile::remove(asf);
     }
 
     QList<QRegularExpression> expressions;
 
     expressions << QRegularExpression("^\\..+-autosave.kra$")
                 << QRegularExpression("^.+-autosave.kra$");
 
     Q_FOREACH(const QRegularExpression &rex, expressions) {
         if (wasRecovered &&
                 !autosaveBaseName.isEmpty() &&
                 rex.match(QFileInfo(autosaveBaseName).fileName()).hasMatch() &&
                 QFile::exists(autosaveBaseName)) {
 
             KisUsageLogger::log(QString("Removing autosave file: %1").arg(autosaveBaseName));
             QFile::remove(autosaveBaseName);
         }
     }
 }
 
 KoUnit KisDocument::unit() const
 {
     return d->unit;
 }
 
 void KisDocument::setUnit(const KoUnit &unit)
 {
     if (d->unit != unit) {
         d->unit = unit;
         emit unitChanged(unit);
     }
 }
 
 KUndo2Stack *KisDocument::undoStack()
 {
     return d->undoStack;
 }
 
 KisImportExportManager *KisDocument::importExportManager() const
 {
     return d->importExportManager;
 }
 
 void KisDocument::addCommand(KUndo2Command *command)
 {
     if (command)
         d->undoStack->push(command);
 }
 
 void KisDocument::beginMacro(const KUndo2MagicString & text)
 {
     d->undoStack->beginMacro(text);
 }
 
 void KisDocument::endMacro()
 {
     d->undoStack->endMacro();
 }
 
 void KisDocument::slotUndoStackCleanChanged(bool value)
 {
     setModified(!value);
 }
 
 void KisDocument::slotConfigChanged()
 {
     KisConfig cfg(true);
 
     if (d->undoStack->undoLimit() != cfg.undoStackLimit()) {
         if (!d->undoStack->isClean()) {
             d->undoStack->clear();
         }
         d->undoStack->setUndoLimit(cfg.undoStackLimit());
     }
 
     d->autoSaveDelay = cfg.autoSaveInterval();
     setNormalAutoSaveInterval();
 }
 
 void KisDocument::clearUndoHistory()
 {
     d->undoStack->clear();
 }
 
 KisGridConfig KisDocument::gridConfig() const
 {
     return d->gridConfig;
 }
 
 void KisDocument::setGridConfig(const KisGridConfig &config)
 {
     d->gridConfig = config;
 }
 
 QList<KoColorSet *> &KisDocument::paletteList()
 {
     return d->paletteList;
 }
 
 void KisDocument::setPaletteList(const QList<KoColorSet *> &paletteList)
 {
     d->paletteList = paletteList;
 }
 
 const KisGuidesConfig& KisDocument::guidesConfig() const
 {
     return d->guidesConfig;
 }
 
 void KisDocument::setGuidesConfig(const KisGuidesConfig &data)
 {
     if (d->guidesConfig == data) return;
 
     d->guidesConfig = data;
     emit sigGuidesConfigChanged(d->guidesConfig);
 }
 
 const KisMirrorAxisConfig& KisDocument::mirrorAxisConfig() const
 {
     return d->mirrorAxisConfig;
 }
 
 void KisDocument::setMirrorAxisConfig(const KisMirrorAxisConfig &config)
 {
     if (d->mirrorAxisConfig == config) {
         return;
     }
 
     d->mirrorAxisConfig = config;
     setModified(true);
 
     emit sigMirrorAxisConfigChanged();
 }
 
 void KisDocument::resetURL() {
     setUrl(QUrl());
     setLocalFilePath(QString());
 }
 
 KoDocumentInfoDlg *KisDocument::createDocumentInfoDialog(QWidget *parent, KoDocumentInfo *docInfo) const
 {
     return new KoDocumentInfoDlg(parent, docInfo);
 }
 
 bool KisDocument::isReadWrite() const
 {
     return d->readwrite;
 }
 
 QUrl KisDocument::url() const
 {
     return d->m_url;
 }
 
 bool KisDocument::closeUrl(bool promptToSave)
 {
     if (promptToSave) {
         if ( isReadWrite() && isModified()) {
             Q_FOREACH (KisView *view, KisPart::instance()->views()) {
                 if (view && view->document() == this) {
                     if (!view->queryClose()) {
                         return false;
                     }
                 }
             }
         }
     }
     // Not modified => ok and delete temp file.
     d->mimeType = QByteArray();
 
     // It always succeeds for a read-only part,
     // but the return value exists for reimplementations
     // (e.g. pressing cancel for a modified read-write part)
     return true;
 }
 
 
 
 void KisDocument::setUrl(const QUrl &url)
 {
     d->m_url = url;
 }
 
 QString KisDocument::localFilePath() const
 {
     return d->m_file;
 }
 
 
 void KisDocument::setLocalFilePath( const QString &localFilePath )
 {
     d->m_file = localFilePath;
 }
 
 bool KisDocument::openUrlInternal(const QUrl &url)
 {
     if ( !url.isValid() ) {
         return false;
     }
 
     if (d->m_bAutoDetectedMime) {
         d->mimeType = QByteArray();
         d->m_bAutoDetectedMime = false;
     }
 
     QByteArray mimetype = d->mimeType;
 
     if ( !closeUrl() ) {
         return false;
     }
 
     d->mimeType = mimetype;
     setUrl(url);
 
     d->m_file.clear();
 
     if (d->m_url.isLocalFile()) {
         d->m_file = d->m_url.toLocalFile();
         bool ret;
         // set the mimetype only if it was not already set (for example, by the host application)
         if (d->mimeType.isEmpty()) {
             // get the mimetype of the file
             // using findByUrl() to avoid another string -> url conversion
             QString mime = KisMimeDatabase::mimeTypeForFile(d->m_url.toLocalFile());
             d->mimeType = mime.toLocal8Bit();
             d->m_bAutoDetectedMime = true;
         }
 
         setUrl(d->m_url);
         ret = openFile();
 
         if (ret) {
             emit completed();
         } else {
             emit canceled(QString());
         }
         return ret;
     }
     return false;
 }
 
 bool KisDocument::newImage(const QString& name,
                            qint32 width, qint32 height,
                            const KoColorSpace* cs,
                            const KoColor &bgColor, KisConfig::BackgroundStyle bgStyle,
                            int numberOfLayers,
                            const QString &description, const double imageResolution)
 {
     Q_ASSERT(cs);
 
     KisImageSP image;
 
     if (!cs) return false;
 
     QApplication::setOverrideCursor(Qt::BusyCursor);
 
     image = new KisImage(createUndoStore(), width, height, cs, name);
 
     Q_CHECK_PTR(image);
 
     connect(image, SIGNAL(sigImageModified()), this, SLOT(setImageModified()), Qt::UniqueConnection);
     image->setResolution(imageResolution, imageResolution);
 
     image->assignImageProfile(cs->profile());
     image->waitForDone();
 
     documentInfo()->setAboutInfo("title", name);
     documentInfo()->setAboutInfo("abstract", description);
 
     KisLayerSP layer;
     if (bgStyle == KisConfig::RASTER_LAYER || bgStyle == KisConfig::FILL_LAYER) {
         KoColor strippedAlpha = bgColor;
         strippedAlpha.setOpacity(OPACITY_OPAQUE_U8);
 
         if (bgStyle == KisConfig::RASTER_LAYER) {
             layer = new KisPaintLayer(image.data(), "Background", OPACITY_OPAQUE_U8, cs);;
             layer->paintDevice()->setDefaultPixel(strippedAlpha);
         } else if (bgStyle == KisConfig::FILL_LAYER) {
             KisFilterConfigurationSP filter_config = KisGeneratorRegistry::instance()->get("color")->defaultConfiguration();
             filter_config->setProperty("color", strippedAlpha.toQColor());
             layer = new KisGeneratorLayer(image.data(), "Background Fill", filter_config, image->globalSelection());
         }
 
         layer->setOpacity(bgColor.opacityU8());
 
         if (numberOfLayers > 1) {
             //Lock bg layer if others are present.
             layer->setUserLocked(true);
         }
     }
     else { // KisConfig::CANVAS_COLOR (needs an unlocked starting layer).
         image->setDefaultProjectionColor(bgColor);
         layer = new KisPaintLayer(image.data(), image->nextLayerName(), OPACITY_OPAQUE_U8, cs);
     }
 
     Q_CHECK_PTR(layer);
     image->addNode(layer.data(), image->rootLayer().data());
     layer->setDirty(QRect(0, 0, width, height));
 
     setCurrentImage(image);
 
     for(int i = 1; i < numberOfLayers; ++i) {
         KisPaintLayerSP layer = new KisPaintLayer(image, image->nextLayerName(), OPACITY_OPAQUE_U8, cs);
         image->addNode(layer, image->root(), i);
         layer->setDirty(QRect(0, 0, width, height));
     }
 
     KisConfig cfg(false);
     cfg.defImageWidth(width);
     cfg.defImageHeight(height);
     cfg.defImageResolution(imageResolution);
     cfg.defColorModel(image->colorSpace()->colorModelId().id());
     cfg.setDefaultColorDepth(image->colorSpace()->colorDepthId().id());
     cfg.defColorProfile(image->colorSpace()->profile()->name());
 
     KisUsageLogger::log(QString("Created image \"%1\", %2 * %3 pixels, %4 dpi. Color model: %6 %5 (%7). Layers: %8")
                              .arg(name)
                              .arg(width).arg(height)
                              .arg(imageResolution * 72.0)
                              .arg(image->colorSpace()->colorModelId().name())
                              .arg(image->colorSpace()->colorDepthId().name())
                              .arg(image->colorSpace()->profile()->name())
                              .arg(numberOfLayers));
 
     QApplication::restoreOverrideCursor();
 
     return true;
 }
 
 bool KisDocument::isSaving() const
 {
     const bool result = d->savingMutex.tryLock();
     if (result) {
         d->savingMutex.unlock();
     }
     return !result;
 }
 
 void KisDocument::waitForSavingToComplete()
 {
     if (isSaving()) {
         KisAsyncActionFeedback f(i18nc("progress dialog message when the user closes the document that is being saved", "Waiting for saving to complete..."), 0);
         f.waitForMutex(&d->savingMutex);
     }
 }
 
 KoShapeControllerBase *KisDocument::shapeController() const
 {
     return d->shapeController;
 }
 
 KoShapeLayer* KisDocument::shapeForNode(KisNodeSP layer) const
 {
     return d->shapeController->shapeForNode(layer);
 }
 
 QList<KisPaintingAssistantSP> KisDocument::assistants() const
 {
     return d->assistants;
 }
 
 void KisDocument::setAssistants(const QList<KisPaintingAssistantSP> &value)
 {
     d->assistants = value;
 }
 
 KisSharedPtr<KisReferenceImagesLayer> KisDocument::referenceImagesLayer() const
 {
     return d->referenceImagesLayer.data();
 }
 
 void KisDocument::setReferenceImagesLayer(KisSharedPtr<KisReferenceImagesLayer> layer, bool updateImage)
 {
     if (d->referenceImagesLayer) {
         d->referenceImagesLayer->disconnect(this);
     }
 
     if (updateImage) {
         if (layer) {
             d->image->addNode(layer);
         } else {
             d->image->removeNode(d->referenceImagesLayer);
         }
     }
 
     d->referenceImagesLayer = layer;
 
     if (d->referenceImagesLayer) {
         connect(d->referenceImagesLayer, SIGNAL(sigUpdateCanvas(QRectF)),
                 this, SIGNAL(sigReferenceImagesChanged()));
     }
 }
 
 void KisDocument::setPreActivatedNode(KisNodeSP activatedNode)
 {
     d->preActivatedNode = activatedNode;
 }
 
 KisNodeSP KisDocument::preActivatedNode() const
 {
     return d->preActivatedNode;
 }
 
 KisImageWSP KisDocument::image() const
 {
     return d->image;
 }
 
 KisImageSP KisDocument::savingImage() const
 {
     return d->savingImage;
 }
 
 
 void KisDocument::setCurrentImage(KisImageSP image, bool forceInitialUpdate)
 {
     if (d->image) {
         // Disconnect existing sig/slot connections
         d->image->setUndoStore(new KisDumbUndoStore());
         d->image->disconnect(this);
         d->shapeController->setImage(0);
         d->image = 0;
     }
 
     if (!image) return;
 
     d->setImageAndInitIdleWatcher(image);
     d->image->setUndoStore(new KisDocumentUndoStore(this));
     d->shapeController->setImage(image);
     setModified(false);
     connect(d->image, SIGNAL(sigImageModified()), this, SLOT(setImageModified()), Qt::UniqueConnection);
 
     if (forceInitialUpdate) {
         d->image->initialRefreshGraph();
     }
 }
 
 void KisDocument::hackPreliminarySetImage(KisImageSP image)
 {
     KIS_SAFE_ASSERT_RECOVER_RETURN(!d->image);
 
     // we set image without connecting idle-watcher, because loading
     // hasn't been finished yet
     d->image = image;
     d->shapeController->setImage(image);
 }
 
 void KisDocument::setImageModified()
 {
     // we only set as modified if undo stack is not at clean state
     setModified(!d->undoStack->isClean());
 }
 
 
 KisUndoStore* KisDocument::createUndoStore()
 {
     return new KisDocumentUndoStore(this);
 }
 
 bool KisDocument::isAutosaving() const
 {
     return d->isAutosaving;
 }
 
 QString KisDocument::exportErrorToUserMessage(KisImportExportErrorCode status, const QString &errorMessage)
 {
     return errorMessage.isEmpty() ? status.errorMessage() : errorMessage;
 }
 
 void KisDocument::setAssistantsGlobalColor(QColor color)
 {
     d->globalAssistantsColor = color;
 }
 
 QColor KisDocument::assistantsGlobalColor()
 {
     return d->globalAssistantsColor;
 }
 
 QRectF KisDocument::documentBounds() const
 {
     QRectF bounds = d->image->bounds();
 
     if (d->referenceImagesLayer) {
         bounds |= d->referenceImagesLayer->boundingImageRect();
     }
 
     return bounds;
 }
diff --git a/libs/ui/KisDocument.h b/libs/ui/KisDocument.h
index 2ccdbfeb64..34e7c114b1 100644
--- a/libs/ui/KisDocument.h
+++ b/libs/ui/KisDocument.h
@@ -1,667 +1,673 @@
 /* This file is part of the Krita project
  *
  * Copyright (C) 2014 Boudewijn Rempt <boud@valdyas.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef KISDOCUMENT_H
 #define KISDOCUMENT_H
 
 #include <QDateTime>
 #include <QTransform>
 #include <QList>
 
 #include <klocalizedstring.h>
 
 #include <KoPageLayout.h>
 #include <KoDocumentBase.h>
 #include <kundo2stack.h>
 #include <KoColorSet.h>
 
 #include <kis_image.h>
 #include <KisImportExportFilter.h>
 #include <kis_properties_configuration.h>
 #include <kis_types.h>
 #include <kis_painting_assistant.h>
 #include <KisReferenceImage.h>
 #include <kis_debug.h>
 #include <KisImportExportUtils.h>
 #include <kis_config.h>
 
 #include "kritaui_export.h"
 
 #include <memory>
 
 class QString;
 
 class KUndo2Command;
 class KoUnit;
 
 class KoColor;
 class KoColorSpace;
 class KoShapeControllerBase;
 class KoShapeLayer;
 class KoStore;
 class KoOdfReadStore;
 class KoDocumentInfo;
 class KoDocumentInfoDlg;
 class KisImportExportManager;
 class KisUndoStore;
 class KisPart;
 class KisGridConfig;
 class KisGuidesConfig;
 class KisMirrorAxisConfig;
 class QDomDocument;
 class KisReferenceImagesLayer;
 
 #define KIS_MIME_TYPE "application/x-krita"
 
 /**
  *  The %Calligra document class
  *
  *  This class provides some functionality each %Calligra document should have.
  *
  *  @short The %Calligra document class
  */
 class KRITAUI_EXPORT KisDocument : public QObject, public KoDocumentBase
 {
     Q_OBJECT
 
 protected:
 
     explicit KisDocument();
 
     /**
      * @brief KisDocument makes a deep copy of the document \p rhs.
      *        The caller *must* ensure that the image is properly
      *        locked and is in consistent state before asking for
      *        cloning.
      * @param rhs the source document to copy from
      */
     explicit KisDocument(const KisDocument &rhs);
 
 public:
     enum OpenFlag {
         None = 0,
         DontAddToRecent = 0x1,
         RecoveryFile = 0x2
     };
     Q_DECLARE_FLAGS(OpenFlags, OpenFlag)
 
     /**
      *  Destructor.
      *
      * The destructor does not delete any attached KisView objects and it does not
      * delete the attached widget as returned by widget().
      */
     ~KisDocument() override;
 
     /**
      * @brief reload Reloads the document from the original url
      * @return the result of loading the document
      */
     bool reload();
 
 
     /**
      * @brief creates a clone of the document and returns it. Please make sure that you
      * hold all the necessary locks on the image before asking for a clone!
      */
     KisDocument* clone();
 
     /**
      * @brief openUrl Open an URL
      * @param url The URL to open
      * @param flags Control specific behavior
      * @return success status
      */
     bool openUrl(const QUrl &url, OpenFlags flags = None);
 
     /**
      * Opens the document given by @p url, without storing the URL
      * in the KisDocument.
      * Call this instead of openUrl() to implement KisMainWindow's
      * File --> Import feature.
      *
      * @note This will call openUrl(). To differentiate this from an ordinary
      *       Open operation (in any reimplementation of openUrl() or openFile())
      *       call isImporting().
      */
     bool importDocument(const QUrl &url);
 
     /**
      * Saves the document as @p url without changing the state of the
      * KisDocument (URL, modified flag etc.). Call this instead of
      * KisParts::ReadWritePart::saveAs() to implement KisMainWindow's
      * File --> Export feature.
      */
     bool exportDocument(const QUrl &url, const QByteArray &mimeType, bool showWarnings = false, KisPropertiesConfigurationSP exportConfiguration = 0);
 
     /**
      * Exports he document is a synchronous way. The caller must ensure that the
      * image is not accessed by any other actors, because the exporting happens
      * without holding the image lock.
      */
     bool exportDocumentSync(const QUrl &url, const QByteArray &mimeType, KisPropertiesConfigurationSP exportConfiguration = 0);
 
 private:
     bool exportDocumentImpl(const KritaUtils::ExportFileJob &job, KisPropertiesConfigurationSP exportConfiguration);
 
 public:
     /**
      * @brief Sets whether the document can be edited or is read only.
      *
      * This recursively applied to all child documents and
      * KisView::updateReadWrite is called for every attached
      * view.
      */
     void setReadWrite(bool readwrite = true);
 
     /**
      * To be preferred when a document exists. It is fast when calling
      * it multiple times since it caches the result that readNativeFormatMimeType()
      * delivers.
      * This comes from the X-KDE-NativeMimeType key in the .desktop file.
      */
     static QByteArray nativeFormatMimeType() { return KIS_MIME_TYPE; }
 
     /// Checks whether a given mimetype can be handled natively.
     bool isNativeFormat(const QByteArray& mimetype) const;
 
     /// Returns a list of the mimetypes considered "native", i.e. which can
     /// be saved by KisDocument without a filter, in *addition* to the main one
     static QStringList extraNativeMimeTypes() { return QStringList() << KIS_MIME_TYPE; }
 
     /**
      * Returns the actual mimetype of the document
      */
     QByteArray mimeType() const override;
 
     /**
      * @brief Sets the mime type for the document.
      *
      * When choosing "save as" this is also the mime type
      * selected by default.
      */
     void setMimeType(const QByteArray & mimeType) override;
 
     /**
      * @return true if file operations should inhibit the option dialog
      */
     bool fileBatchMode() const;
 
     /**
      * @param batchMode if true, do not show the option dialog for file operations.
      */
     void setFileBatchMode(const bool batchMode);
 
     /**
      * Sets the error message to be shown to the user (use i18n()!)
      * when loading or saving fails.
      * If you asked the user about something and they chose "Cancel",
      */
     void setErrorMessage(const QString& errMsg);
 
     /**
      * Return the last error message. Usually KisDocument takes care of
      * showing it; this method is mostly provided for non-interactive use.
      */
     QString errorMessage() const;
 
     /**
      * Sets the warning message to be shown to the user (use i18n()!)
      * when loading or saving fails.
      */
     void setWarningMessage(const QString& warningMsg);
 
     /**
      * Return the last warning message set by loading or saving. Warnings
      * mean that the document could not be completely loaded, but the errors
      * were not absolutely fatal.
      */
     QString warningMessage() const;
 
     /**
      * @brief Generates a preview picture of the document
      * @note The preview is used in the File Dialog and also to create the Thumbnail
      */
     QPixmap generatePreview(const QSize& size);
 
     /**
      *  Tells the document that its title has been modified, either because
      *  the modified status changes (this is done by setModified() ) or
      *  because the URL or the document-info's title changed.
      */
     void setTitleModified();
 
     /**
      *  @brief Sets the document to empty.
      *
      *  Used after loading a template
      *  (which is not empty, but not the user's input).
      *
      *  @see isEmpty()
      */
     void setEmpty(bool empty = true);
 
     /**
      *  Return a correctly created QDomDocument for this KisDocument,
      *  including processing instruction, complete DOCTYPE tag (with systemId and publicId), and root element.
      *  @param tagName the name of the tag for the root element
      *  @param version the DTD version (usually the application's version).
      */
     QDomDocument createDomDocument(const QString& tagName, const QString& version) const;
 
     /**
      *  Return a correctly created QDomDocument for an old (1.3-style) %Calligra document,
      *  including processing instruction, complete DOCTYPE tag (with systemId and publicId), and root element.
      *  This static method can be used e.g. by filters.
      *  @param appName the app's instance name, e.g. words, kspread, kpresenter etc.
      *  @param tagName the name of the tag for the root element, e.g. DOC for words/kpresenter.
      *  @param version the DTD version (usually the application's version).
      */
     static QDomDocument createDomDocument(const QString& appName, const QString& tagName, const QString& version);
 
    /**
      *  Loads a document in the native format from a given URL.
      *  Reimplement if your native format isn't XML.
      *
      *  @param file the file to load - usually KReadOnlyPart::m_file or the result of a filter
      */
     bool loadNativeFormat(const QString & file);
 
     /**
      * Set standard autosave interval that is set by a config file
      */
     void setNormalAutoSaveInterval();
 
     /**
      * Set emergency interval that autosave uses when the image is busy,
      * by default it is 10 sec
      */
     void setEmergencyAutoSaveInterval();
 
     /**
      * Disable autosave
      */
     void setInfiniteAutoSaveInterval();
 
     /**
      * @return the information concerning this document.
      * @see KoDocumentInfo
      */
     KoDocumentInfo *documentInfo() const;
 
     /**
      * Performs a cleanup of unneeded backup files
      */
     void removeAutoSaveFiles(const QString &autosaveBaseName, bool wasRecovered);
 
     /**
      * Returns true if this document or any of its internal child documents are modified.
      */
     bool isModified() const override;
 
     /**
      * @return caption of the document
      *
      * Caption is of the form "[title] - [url]",
      * built out of the document info (title) and pretty-printed
      * document URL.
      * If the title is not present, only the URL it returned.
      */
     QString caption() const;
 
     /**
      * Sets the document URL to empty URL
      * KParts doesn't allow this, but %Calligra apps have e.g. templates
      * After using loadNativeFormat on a template, one wants
      * to set the url to QUrl()
      */
     void resetURL();
 
     /**
      * @internal (public for KisMainWindow)
      */
     void setMimeTypeAfterLoading(const QString& mimeType);
 
     /**
      * Returns the unit used to display all measures/distances.
      */
     KoUnit unit() const;
 
     /**
      * Sets the unit used to display all measures/distances.
      */
     void setUnit(const KoUnit &unit);
 
     KisGridConfig gridConfig() const;
     void setGridConfig(const KisGridConfig &config);
 
     /// returns the guides data for this document.
     const KisGuidesConfig& guidesConfig() const;
     void setGuidesConfig(const KisGuidesConfig &data);
 
     const KisMirrorAxisConfig& mirrorAxisConfig() const;
     void setMirrorAxisConfig(const KisMirrorAxisConfig& config);
 
     QList<KoColorSet *> &paletteList();
     void setPaletteList(const QList<KoColorSet *> &paletteList);
 
     void clearUndoHistory();
 
 
     /**
      *  Sets the modified flag on the document. This means that it has
      *  to be saved or not before deleting it.
      */
     void setModified(bool _mod);
 
     void setRecovered(bool value);
     bool isRecovered() const;
 
     void updateEditingTime(bool forceStoreElapsed);
 
     /**
      * Returns the global undo stack
      */
     KUndo2Stack *undoStack();
 
 
     /**
      * @brief importExportManager gives access to the internal import/export manager
      * @return the document's import/export manager
      */
     KisImportExportManager *importExportManager() const;
 
     /**
      * @brief serializeToNativeByteArray daves the document into a .kra file wtitten
      * to a memory-based byte-array
      * @return a byte array containing the .kra file
      */
     QByteArray serializeToNativeByteArray();
 
 
     /**
      * @brief isInSaving shown if the document has any (background) saving process or not
      * @return true if there is some saving in action
      */
     bool isInSaving() const;
 
 public Q_SLOTS:
 
     /**
      * Adds a command to the undo stack and executes it by calling the redo() function.
      * @param command command to add to the undo stack
      */
     void addCommand(KUndo2Command *command);
 
     /**
      * Begins recording of a macro command. At the end endMacro needs to be called.
      * @param text command description
      */
     void beginMacro(const KUndo2MagicString &text);
 
     /**
      * Ends the recording of a macro command.
      */
     void endMacro();
 
 Q_SIGNALS:
 
     /**
      * This signal is emitted when the unit is changed by setUnit().
      * It is common to connect views to it, in order to change the displayed units
      * (e.g. in the rulers)
      */
     void unitChanged(const KoUnit &unit);
 
     /**
      * Emitted e.g. at the beginning of a save operation
      * This is emitted by KisDocument and used by KisView to display a statusbar message
      */
     void statusBarMessage(const QString& text, int timeout = 0);
 
     /**
      * Emitted e.g. at the end of a save operation
      * This is emitted by KisDocument and used by KisView to clear the statusbar message
      */
     void clearStatusBarMessage();
 
     /**
     * Emitted when the document is modified
     */
     void modified(bool);
 
     void titleModified(const QString &caption, bool isModified);
 
     void sigLoadingFinished();
 
     void sigSavingFinished();
 
     void sigGuidesConfigChanged(const KisGuidesConfig &config);
 
     void sigBackgroundSavingFinished(KisImportExportErrorCode status, const QString &errorMessage);
 
     void sigCompleteBackgroundSaving(const KritaUtils::ExportFileJob &job, KisImportExportErrorCode status, const QString &errorMessage);
 
     void sigReferenceImagesChanged();
 
     void sigMirrorAxisConfigChanged();
 
 private Q_SLOTS:
     void finishExportInBackground();
     void slotChildCompletedSavingInBackground(KisImportExportErrorCode status, const QString &errorMessage);
     void slotCompleteAutoSaving(const KritaUtils::ExportFileJob &job, KisImportExportErrorCode status, const QString &errorMessage);
 
     void slotCompleteSavingDocument(const KritaUtils::ExportFileJob &job, KisImportExportErrorCode status, const QString &errorMessage);
 
     void slotInitiateAsyncAutosaving(KisDocument *clonedDocument);
 
 private:
 
     friend class KisPart;
     friend class SafeSavingLocker;
 
     bool initiateSavingInBackground(const QString actionName,
                                     const QObject *receiverObject, const char *receiverMethod,
                                     const KritaUtils::ExportFileJob &job,
                                     KisPropertiesConfigurationSP exportConfiguration,
                                     std::unique_ptr<KisDocument> &&optionalClonedDocument);
 
     bool initiateSavingInBackground(const QString actionName,
                                     const QObject *receiverObject, const char *receiverMethod,
                                     const KritaUtils::ExportFileJob &job,
                                     KisPropertiesConfigurationSP exportConfiguration);
 
     bool startExportInBackground(const QString &actionName, const QString &location,
                                  const QString &realLocation,
                                  const QByteArray &mimeType,
                                  bool showWarnings,
                                  KisPropertiesConfigurationSP exportConfiguration);
 
+    bool initiateSavingSynchronously(const KritaUtils::ExportFileJob& job);
+
     /**
      * Activate/deactivate/configure the autosave feature.
      * @param delay in seconds, 0 to disable
      */
     void setAutoSaveDelay(int delay);
 
     /**
      * Generate a name for the document.
      */
     QString newObjectName();
 
     QString generateAutoSaveFileName(const QString & path) const;
 
     /**
      *  Loads a document
      *
      *  Applies a filter if necessary, and calls loadNativeFormat in any case
      *  You should not have to reimplement, except for very special cases.
      *
      * NOTE: this method also creates a new KisView instance!
      *
      * This method is called from the KReadOnlyPart::openUrl method.
      */
     bool openFile();
 
 public:
 
     bool isAutosaving() const override;
 
 public:
 
     QString localFilePath() const override;
     void setLocalFilePath( const QString &localFilePath );
 
     KoDocumentInfoDlg* createDocumentInfoDialog(QWidget *parent, KoDocumentInfo *docInfo) const;
 
     bool isReadWrite() const;
 
     QUrl url() const override;
     void setUrl(const QUrl &url) override;
 
     bool closeUrl(bool promptToSave = true);
 
     bool saveAs(const QUrl &url, const QByteArray &mimeType, bool showWarnings, KisPropertiesConfigurationSP exportConfigration = 0);
 
     /**
      * Create a new image that has this document as a parent and
      * replace the current image with this image.
      */
     bool newImage(const QString& name, qint32 width, qint32 height, const KoColorSpace * cs, const KoColor &bgColor, KisConfig::BackgroundStyle bgStyle,
                   int numberOfLayers, const QString &imageDescription, const double imageResolution);
 
     bool isSaving() const;
     void waitForSavingToComplete();
 
 
     KisImageWSP image() const;
 
     /**
      * @brief savingImage provides a detached, shallow copy of the original image that must be used when saving.
      * Any strokes in progress will not be applied to this image, so the result might be missing some data. On
      * the other hand, it won't block.
      *
      * @return a shallow copy of the original image, or 0 is saving is not in progress
      */
     KisImageSP savingImage() const;
 
     /**
      * Set the current image to the specified image and turn undo on.
      */
     void setCurrentImage(KisImageSP image, bool forceInitialUpdate = true);
 
     /**
      * Set the image of the document preliminary, before the document
      * has completed loading. Some of the document items (shapes) may want
      * to access image properties (bounds and resolution), so we should provide
      * it to them even before the entire image is loaded.
      *
      * Right now, the only use by KoShapeRegistry::createShapeFromOdf(), remove
      * after it is deprecated.
      */
     void hackPreliminarySetImage(KisImageSP image);
 
     KisUndoStore* createUndoStore();
 
     /**
      * The shape controller matches internal krita image layers with
      * the flake shape hierarchy.
      */
     KoShapeControllerBase * shapeController() const;
 
     KoShapeLayer* shapeForNode(KisNodeSP layer) const;
 
     /**
      * Set the list of nodes that was marked as currently active. Used *only*
      * for saving loading. Never use it for tools or processing.
      */
     void setPreActivatedNode(KisNodeSP activatedNode);
 
     /**
      * @return the node that was set as active during loading. Used *only*
      * for saving loading. Never use it for tools or processing.
      */
     KisNodeSP preActivatedNode() const;
 
     /// @return the list of assistants associated with this document
     QList<KisPaintingAssistantSP> assistants() const;
 
     /// @replace the current list of assistants with @param value
     void setAssistants(const QList<KisPaintingAssistantSP> &value);
 
 
     void setAssistantsGlobalColor(QColor color);
     QColor assistantsGlobalColor();
 
 
 
     /**
      * Get existing reference images layer or null if none exists.
      */
     KisSharedPtr<KisReferenceImagesLayer> referenceImagesLayer() const;
 
     void setReferenceImagesLayer(KisSharedPtr<KisReferenceImagesLayer> layer, bool updateImage);
 
     bool save(bool showWarnings, KisPropertiesConfigurationSP exportConfiguration);
 
     /**
      * Return the bounding box of the image and associated elements (e.g. reference images)
      */
     QRectF documentBounds() const;
 
+    /**
+     * @brief Start saving when android activity is pushed to the background
+     */
+    void autoSaveOnPause();
 Q_SIGNALS:
 
     void completed();
     void canceled(const QString &);
 
 private Q_SLOTS:
 
     void setImageModified();
 
     void slotAutoSave();
 
     void slotUndoStackCleanChanged(bool value);
 
     void slotConfigChanged();
 
 
 private:
     /**
      * @brief try to clone the image. This method handles all the locking for you. If locking
      *        has failed, no cloning happens
      * @return cloned document on success, null otherwise
      */
     KisDocument *lockAndCloneForSaving();
 
     QString exportErrorToUserMessage(KisImportExportErrorCode status, const QString &errorMessage);
 
     QString prettyPathOrUrl() const;
 
     bool openUrlInternal(const QUrl &url);
 
     void slotAutoSaveImpl(std::unique_ptr<KisDocument> &&optionalClonedDocument);
 
     class Private;
     Private *const d;
 };
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(KisDocument::OpenFlags)
 Q_DECLARE_METATYPE(KisDocument*)
 
 #endif
diff --git a/packaging/android/apk/src/org/krita/android/JNIWrappers.java b/packaging/android/apk/src/org/krita/android/JNIWrappers.java
new file mode 100644
index 0000000000..a5a9cedd00
--- /dev/null
+++ b/packaging/android/apk/src/org/krita/android/JNIWrappers.java
@@ -0,0 +1,6 @@
+package org.krita.android;
+
+class JNIWrappers {
+	public static native void saveState();
+}
+
diff --git a/packaging/android/apk/src/org/krita/android/MainActivity.java b/packaging/android/apk/src/org/krita/android/MainActivity.java
index ff28cfbd13..d64f2ebdb2 100644
--- a/packaging/android/apk/src/org/krita/android/MainActivity.java
+++ b/packaging/android/apk/src/org/krita/android/MainActivity.java
@@ -1,19 +1,33 @@
 package org.krita.android;
 
 import android.os.Bundle;
 import android.view.WindowManager;
 
 import org.qtproject.qt5.android.bindings.QtActivity;
 
 public class MainActivity extends QtActivity {
 
+    public boolean isStartup = true;
+
 	@Override
 	public void onCreate(Bundle savedInstanceState) {
 		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-		           WindowManager.LayoutParams.FLAG_FULLSCREEN);
+		                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
 		super.onCreate(savedInstanceState);
 
 		new ConfigsManager().handleAssets(this);
 	}
 
+	@Override
+	public void onPause() {
+		super.onPause();
+		// onPause() _is_ called when the app starts. If the native lib
+		// isn't loaded, it crashes.
+		if (!isStartup) {
+			JNIWrappers.saveState();
+		}
+		else {
+			isStartup = false;
+		}
+	}
 }